/* roulang page: index */
:root{
  --ink-900:#0A0F0E;
  --ink-800:#101716;
  --ink-700:#16201E;
  --ink-600:#1C2724;
  --footer-bg:#070B0A;
  --neon:#1EE0B4;
  --neon-rgb:30,224,180;
  --lime:#C9FF4D;
  --ember:#FF6A3D;
  --text:#E8F1EE;
  --text-2:#9AAEAA;
  --text-3:#647673;
  --line:rgba(255,255,255,.08);
  --neon-line:rgba(30,224,180,.35);
  --radius-card:16px;
  --radius-btn:14px;
  --radius-img:12px;
  --shadow-card:0 10px 30px rgba(0,0,0,.35);
  --glow:0 0 24px rgba(30,224,180,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --bs-primary:#1EE0B4;
  --bs-primary-rgb:30,224,180;
  --bs-body-bg:#0A0F0E;
  --bs-body-color:#E8F1EE;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#1EE0B4;
  --bs-link-hover-color:#C9FF4D;
  --bs-border-radius:14px;
  --bs-font-sans-serif:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--text);text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease)}
a:hover{color:var(--neon)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text)}
h1{font-size:clamp(28px,5.2vw,52px);line-height:1.25;letter-spacing:-.01em}
h2{font-size:clamp(22px,3vw,32px);line-height:1.35}
h3{font-size:20px;line-height:1.45;font-weight:600}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
strong{color:var(--text);font-weight:600}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px}
::selection{background:rgba(var(--neon-rgb),.3);color:#fff}

.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media(min-width:1440px){.wrap{max-width:1280px}}
@media(max-width:575.98px){.wrap{padding:0 16px}}

.sec{padding:96px 0}
.sec-md{padding:72px 0}
.sec-sm{padding:56px 0}
@media(max-width:991.98px){.sec{padding:64px 0}.sec-md{padding:56px 0}.sec-sm{padding:44px 0}}
@media(max-width:575.98px){.sec{padding:52px 0}.sec-md{padding:44px 0}.sec-sm{padding:36px 0}}

/* ---------- 顶栏 ---------- */
.site-head{position:sticky;top:0;z-index:1030;background:rgba(10,15,14,.92);border-bottom:1px solid var(--line);transition:box-shadow .22s var(--ease),background .22s var(--ease)}
.site-head.scrolled{backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 12px 30px rgba(0,0,0,.45)}
.head-line{height:1px;background:linear-gradient(90deg,transparent,var(--neon),var(--lime),transparent);opacity:.9}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.brand{display:inline-flex;align-items:center;gap:9px;font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text);white-space:nowrap}
.brand:hover{color:#fff}
.brand-dot{width:9px;height:9px;border-radius:50%;background:var(--neon);box-shadow:0 0 14px rgba(var(--neon-rgb),.85);flex:0 0 auto}
.main-nav{display:flex;align-items:center;justify-content:center;gap:2px;flex:1 1 auto}
.nav-link-x{position:relative;padding:10px 12px;font-size:15px;font-weight:500;color:var(--text-2);white-space:nowrap}
.nav-link-x::after{content:'';position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:transparent;transition:background .18s var(--ease),box-shadow .18s var(--ease)}
.nav-link-x:hover{color:#fff}
.nav-link-x:hover::after{background:rgba(255,255,255,.2)}
.nav-link-x.active{color:#fff;text-shadow:0 0 12px rgba(var(--neon-rgb),.5)}
.nav-link-x.active::after{background:var(--neon);box-shadow:0 0 12px rgba(var(--neon-rgb),.7)}
.head-actions{display:flex;align-items:center;gap:12px}
.menu-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.03);align-items:center;justify-content:center;cursor:pointer}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:'';position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
@media(max-width:1199.98px){.nav-link-x{padding:10px 9px;font-size:14px}}
@media(max-width:991.98px){
  .head-inner{height:60px}
  .main-nav{display:none}
  .menu-toggle{display:inline-flex}
  .head-actions .btn-ember{display:none}
}
.drawer{position:fixed;top:0;right:0;height:100%;width:min(86vw,340px);background:var(--ink-800);border-left:1px solid var(--line);transform:translateX(100%);transition:transform .26s var(--ease);z-index:1080;padding:22px 20px 40px;overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.62);opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);z-index:1070}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer-brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:16px;margin-bottom:22px}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px}
.drawer-nav a{padding:12px 14px;border-radius:12px;color:var(--text-2);font-size:15px;border:1px solid transparent}
.drawer-nav a:hover{background:rgba(255,255,255,.04);color:#fff}
.drawer-nav a.active{color:var(--neon);border-color:var(--neon-line);background:rgba(var(--neon-rgb),.07)}

/* ---------- 按钮 ---------- */
.btn-ember,.btn-neon,.btn-ghost,.btn-quiet{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:50px;padding:0 26px;font-size:16px;font-weight:600;border-radius:999px;border:1px solid transparent;cursor:pointer;transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);white-space:nowrap}
.btn-ember{background:linear-gradient(180deg,#FF7E52,#F2542A);color:#170805;font-weight:700;box-shadow:0 10px 26px rgba(255,106,61,.24)}
.btn-ember:hover{color:#170805;transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,106,61,.36)}
.btn-ember:active{transform:translateY(1px)}
.btn-neon{background:rgba(var(--neon-rgb),.12);color:var(--neon);border-color:var(--neon-line)}
.btn-neon:hover{color:#06110E;background:var(--neon);transform:translateY(-2px);box-shadow:var(--glow)}
.btn-ghost{background:rgba(255,255,255,.03);color:var(--text-2);border-color:var(--line)}
.btn-ghost:hover{color:#fff;border-color:var(--neon-line);transform:translateY(-2px)}
.btn-quiet{height:auto;padding:0;color:var(--text-2);border:none;background:none;font-size:15px}
.btn-quiet:hover{color:var(--neon);transform:translateX(3px)}
.btn-mid{height:46px;padding:0 20px;font-size:15px}
.btn-sm-x{height:40px;padding:0 18px;font-size:14px;border-radius:12px}
.btn-block{width:100%}

/* ---------- 通用区块标题 ---------- */
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;color:var(--neon);text-transform:uppercase;margin-bottom:14px;font-weight:600}
.kicker::before{content:'';width:22px;height:1px;background:var(--neon)}
.sec-title{position:relative;padding-left:16px}
.sec-title::before{content:'';position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:2px;background:linear-gradient(180deg,var(--neon),var(--lime))}
.sec-sub{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.85;max-width:640px}
.sec-head.center .sec-sub{margin-left:auto;margin-right:auto}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:88px 0 96px;background:radial-gradient(900px 460px at 78% -8%,rgba(var(--neon-rgb),.12),transparent 62%),url('/assets/images/backpic/back-1.png') center/cover no-repeat}
.hero::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,15,14,.86),rgba(10,15,14,.96))}
.hero .wrap{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:10px;padding:7px 16px;border-radius:999px;border:1px solid var(--neon-line);background:rgba(var(--neon-rgb),.08);color:var(--neon);font-size:13px;font-weight:600;margin-bottom:22px}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 10px rgba(201,255,77,.8);display:inline-block}
.hero h1{margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--neon)}
.hero-sub{font-size:17px;color:var(--text-2);line-height:1.9;max-width:600px;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:8px 15px;border-radius:999px;background:var(--ink-700);border:1px solid var(--line);font-size:13px;color:var(--text-2)}
.chip b{color:var(--lime);font-variant-numeric:tabular-nums;font-weight:600}
.hero-visual{position:relative}
.device-frame{position:relative;border-radius:var(--radius-img);border:1px solid var(--neon-line);overflow:hidden;box-shadow:0 30px 60px rgba(0,0,0,.55),var(--glow)}
.device-frame img{width:100%;height:480px;object-fit:cover}
.device-frame::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,15,14,.05),rgba(10,15,14,.72))}
.visual-fade{position:absolute;left:6%;right:6%;bottom:-26px;height:52px;background:linear-gradient(180deg,rgba(var(--neon-rgb),.22),transparent);filter:blur(14px);z-index:-1}
@media(max-width:991.98px){
  .hero{padding:60px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .device-frame img{height:340px}
}
@media(max-width:575.98px){
  .hero-cta .btn-ember,.hero-cta .btn-neon{width:100%}
  .device-frame img{height:270px}
}

/* ---------- 轮播（截图墙） ---------- */
.shot-wrap{position:relative}
.slider{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 2px 18px;scrollbar-width:none;-ms-overflow-style:none}
.slider::-webkit-scrollbar{display:none}
.shot{flex:0 0 calc((100% - 40px)/3);scroll-snap-align:start;background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .2s var(--ease),border-color .2s var(--ease)}
.shot:hover{transform:translateY(-4px);border-color:var(--neon-line)}
.shot img{width:100%;height:186px;object-fit:cover;transition:transform .3s var(--ease)}
.shot:hover img{transform:scale(1.03)}
.shot-body{padding:18px 20px 22px}
.shot-body h3{font-size:17px;margin-bottom:8px}
.shot-body p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0}
.shot-ctrl{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:6px}
.dots{display:flex;align-items:center;gap:8px}
.dot{width:22px;height:4px;border-radius:999px;background:rgba(255,255,255,.16);border:none;padding:0;cursor:pointer;transition:background .2s var(--ease),width .2s var(--ease)}
.dot.active{background:var(--lime);width:34px}
.arrows{display:flex;gap:10px}
.s-arrow{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:rgba(255,255,255,.02);color:var(--text-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:all .18s var(--ease)}
.s-arrow:hover{border-color:var(--neon);color:var(--neon);box-shadow:var(--glow)}
.slider-hint{margin-top:16px;font-size:14px;color:var(--text-3)}
@media(max-width:1199.98px){.shot{flex:0 0 calc((100% - 20px)/2)}}
@media(max-width:767.98px){.shot{flex:0 0 86%}.shot img{height:170px}}

/* ---------- 系统要求 ---------- */
.req-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.req-note{color:var(--text-2);font-size:16px;line-height:1.9}
.req-note h3{font-size:20px;margin-bottom:14px}
.req-list{display:grid;gap:22px}
.req-group{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden}
.req-group-head{display:flex;align-items:center;justify-content:space-between;padding:16px 22px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.02)}
.req-group-head h3{font-size:16px;letter-spacing:.02em}
.req-group-head span{font-size:13px;color:var(--text-3)}
.req-item{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 22px;border-bottom:1px solid var(--line);font-size:15px}
.req-item:last-child{border-bottom:none}
.req-item span{color:var(--text-2)}
.req-item b{color:var(--lime);font-weight:600;font-variant-numeric:tabular-nums;text-align:right}
@media(max-width:991.98px){.req-grid{grid-template-columns:1fr;gap:32px}}
@media(max-width:575.98px){.req-item{flex-direction:column;align-items:flex-start;gap:4px}.req-item b{text-align:left}}

/* ---------- 评价墙 ---------- */
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rev-col{display:flex;flex-direction:column;gap:24px}
@media(min-width:992px){.rev-col.offset{margin-top:40px}}
.rev-card{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-card);transition:transform .2s var(--ease),border-color .2s var(--ease)}
.rev-card:hover{transform:translateY(-4px);border-color:var(--neon-line)}
.stars{color:var(--ember);letter-spacing:2px;font-size:14px;margin-bottom:12px}
.rev-card p{font-size:15px;color:var(--text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.rev-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line);padding-top:14px}
.rev-meta b{color:var(--text);font-weight:600;font-size:14px}
@media(max-width:991.98px){.rev-grid{grid-template-columns:repeat(2,1fr)}.rev-col.offset{margin-top:0}}
@media(max-width:575.98px){.rev-grid{grid-template-columns:1fr}}

/* ---------- 下载区 ---------- */
.dl-panel{position:relative;background:linear-gradient(140deg,rgba(var(--neon-rgb),.08),rgba(10,15,14,0)) ,var(--ink-800);border:1px solid var(--line);border-radius:24px;padding:44px;box-shadow:var(--shadow-card);overflow:hidden}
.dl-panel::before{content:'';position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(var(--neon-rgb),.18),transparent 70%)}
.dl-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center}
.dl-actions{display:flex;flex-wrap:wrap;gap:14px;margin:26px 0 18px}
.dl-actions .btn-ember{height:54px;padding:0 30px}
.dl-note{font-size:14px;color:var(--text-3);line-height:1.8}
.qr-box{width:140px;height:140px;border-radius:14px;border:1px solid var(--neon-line);background:var(--ink-900);padding:8px;box-shadow:var(--glow)}
.qr-box svg{width:100%;height:100%;display:block}
.qr-side{display:flex;align-items:center;gap:22px;justify-content:flex-end}
.qr-side p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:180px;margin:0}
@media(max-width:991.98px){.dl-panel{padding:28px}.dl-grid{grid-template-columns:1fr;gap:28px}.qr-side{justify-content:flex-start}}
@media(max-width:575.98px){.dl-actions .btn-ember,.dl-actions .btn-ghost{width:100%}}

/* ---------- CMS 资讯 ---------- */
.cms-lead{display:grid;grid-template-columns:5fr 7fr;gap:0;background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);margin-bottom:26px;transition:border-color .2s var(--ease)}
.cms-lead:hover{border-color:var(--neon-line)}
.cms-lead-media{display:block;overflow:hidden}
.cms-lead-media img{width:100%;height:100%;min-height:280px;object-fit:cover;transition:transform .3s var(--ease)}
.cms-lead:hover .cms-lead-media img{transform:scale(1.03)}
.cms-lead-body{padding:30px 34px;display:flex;flex-direction:column;justify-content:center;gap:12px}
.badge-neon{display:inline-flex;align-items:center;align-self:flex-start;padding:5px 13px;border-radius:999px;background:rgba(var(--neon-rgb),.1);border:1px solid var(--neon-line);color:var(--neon);font-size:12px;font-weight:600;letter-spacing:.04em}
.cms-title{font-size:22px;line-height:1.5}
.cms-title a{color:var(--text)}
.cms-title a:hover{color:var(--neon)}
.cms-desc{font-size:15px;color:var(--text-2);line-height:1.85;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:0}
.cms-meta{display:flex;align-items:center;justify-content:space-between;gap:14px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line);padding-top:14px;margin-top:4px}
.link-more{color:var(--neon);font-size:14px;font-weight:600;position:relative}
.link-more::after{content:'';position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--neon);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.link-more:hover::after{transform:scaleX(1)}
.cms-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cms-card{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);display:flex;flex-direction:column;transition:transform .2s var(--ease),border-color .2s var(--ease)}
.cms-card:hover{transform:translateY(-4px);border-color:var(--neon-line)}
.cms-card-media{display:block;overflow:hidden}
.cms-card-media img{width:100%;height:172px;object-fit:cover;transition:transform .3s var(--ease)}
.cms-card:hover .cms-card-media img{transform:scale(1.03)}
.cms-card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.cms-card-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-card-body h3 a{color:var(--text)}
.cms-card-body h3 a:hover{color:var(--neon)}
.cms-card-body p{font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0}
.cms-card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);border-top:1px solid var(--line);padding-top:12px}
.empty-state{border:1px dashed var(--line);border-radius:var(--radius-card);padding:44px 24px;text-align:center;color:var(--text-3);background:rgba(255,255,255,.015)}
.empty-state b{display:block;color:var(--text-2);font-weight:600;margin-bottom:6px}
@media(max-width:991.98px){.cms-lead{grid-template-columns:1fr}.cms-lead-media img{min-height:220px}.cms-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:575.98px){.cms-grid{grid-template-columns:1fr}}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{background:var(--ink-700);border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden}
.accordion-button{position:relative;background:transparent;color:var(--text);font-size:17px;font-weight:600;padding:18px 54px 18px 22px;box-shadow:none;width:100%;text-align:left;border:none;cursor:pointer;line-height:1.6}
.accordion-button:not(.collapsed){color:var(--neon);background:rgba(var(--neon-rgb),.05)}
.accordion-button::after{position:absolute;right:22px;top:50%;transform:translateY(-50%);content:'+';font-size:22px;line-height:1;color:var(--neon);transition:transform .22s var(--ease);background-image:none;width:auto;height:auto}
.accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg)}
.accordion-button:not(.collapsed)::before{content:'';position:absolute;left:0;top:12px;bottom:12px;width:3px;background:linear-gradient(180deg,var(--neon),var(--lime));border-radius:2px}
.accordion-button:focus{box-shadow:none;outline:none}
.accordion-body{padding:4px 24px 22px;color:var(--text-2);font-size:15px;line-height:1.9;border-top:1px solid var(--line)}

/* ---------- 收口 CTA ---------- */
.final-cta{position:relative;border-radius:24px;overflow:hidden;border:1px solid var(--neon-line);background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat}
.final-cta::after{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(10,15,14,.95),rgba(10,15,14,.72))}
.final-cta-inner{position:relative;z-index:2;padding:52px 44px;display:grid;grid-template-columns:8fr 4fr;gap:32px;align-items:center}
.final-cta h2{margin-bottom:12px}
.final-cta p{color:var(--text-2);font-size:16px;max-width:600px}
.final-cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
@media(max-width:991.98px){.final-cta-inner{grid-template-columns:1fr;padding:36px 26px}.final-cta-actions{justify-content:flex-start}}
@media(max-width:575.98px){.final-cta-actions .btn-ember,.final-cta-actions .btn-ghost{width:100%}}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--footer-bg);border-top:1px solid var(--line);position:relative;padding-top:64px}
.site-foot::before{content:'';position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,var(--neon),var(--lime),transparent)}
.foot-grid{display:grid;grid-template-columns:4fr 2fr 2.5fr 3fr;gap:40px;padding-bottom:48px}
.foot-brand{display:flex;align-items:center;gap:9px;font-size:17px;font-weight:700;margin-bottom:16px}
.foot-desc{font-size:14px;color:var(--text-3);line-height:1.9;max-width:320px;margin-bottom:20px}
.sub-form{display:flex;gap:10px;max-width:330px}
.sub-form input{flex:1;min-width:0;height:46px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--text);padding:0 14px;font-size:14px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(var(--neon-rgb),.14)}
.form-tip{font-size:13px;color:var(--ember);margin-top:8px;min-height:18px}
.foot-title{font-size:15px;font-weight:600;margin-bottom:18px;color:var(--text)}
.foot-list{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.foot-list a,.foot-list span{font-size:14px;color:var(--text-3);display:inline-block;transition:color .18s var(--ease),transform .18s var(--ease)}
.foot-list a:hover{color:var(--neon);transform:translateX(2px)}
.foot-bottom{border-top:1px solid var(--line);padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--text-3)}
@media(max-width:991.98px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:575.98px){.foot-grid{grid-template-columns:1fr;gap:28px}.sub-form{max-width:none}}

@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --ink-900:#0A0F0E;
  --ink-800:#101716;
  --ink-700:#16201E;
  --ink-foot:#070B0A;
  --neon:#1EE0B4;
  --lime:#C9FF4D;
  --ember:#FF6A3D;
  --txt:#E8F1EE;
  --txt-2:#9AAEAA;
  --txt-3:#647673;
  --line:rgba(255,255,255,.08);
  --neon-line:rgba(30,224,180,.35);
  --r-card:16px;
  --r-btn:14px;
  --r-img:12px;
  --shadow-card:0 10px 30px rgba(0,0,0,.35);
  --glow:0 0 24px rgba(30,224,180,.18);
  --t:200ms cubic-bezier(.2,.7,.3,1);

  --bs-body-bg:var(--ink-900);
  --bs-body-color:var(--txt);
  --bs-border-color:var(--line);
  --bs-primary:var(--neon);
  --bs-link-color:var(--neon);
  --bs-link-hover-color:var(--lime);
  --bs-font-sans-serif:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--txt);
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--neon);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--lime);}
h1,h2,h3,h4{margin:0 0 16px;line-height:1.35;font-weight:700;color:var(--txt);}
h1{font-size:clamp(28px,5.2vw,52px);line-height:1.25;letter-spacing:-.01em;}
h2{font-size:clamp(22px,3vw,32px);}
h3{font-size:20px;font-weight:600;}
p{margin:0 0 1.1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
::selection{background:rgba(30,224,180,.32);color:#fff;}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px;}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1440px){.wrap{max-width:1280px;}}
@media (max-width:575px){.wrap{padding:0 16px;}}

/* ============ 顶栏 ============ */
.site-head{
  position:sticky;top:0;z-index:1035;
  background:rgba(10,15,14,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.site-head::before{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,var(--neon),var(--lime),transparent);
  opacity:.9;
}
.head-inner{height:68px;display:flex;align-items:center;gap:20px;}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;color:var(--txt);letter-spacing:.01em;
  white-space:nowrap;
}
.brand:hover{color:var(--txt);}
.brand-dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--neon);
  box-shadow:0 0 12px rgba(30,224,180,.85);
  flex:none;
}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:4px;}
.nav-link-x{
  position:relative;
  display:inline-block;
  padding:9px 11px;
  font-size:15px;font-weight:500;
  color:var(--txt-2);
  border-radius:9px;
  transition:color var(--t),background-color var(--t);
}
.nav-link-x:hover{color:#fff;background:rgba(255,255,255,.045);}
.nav-link-x.active{color:var(--txt);}
.nav-link-x.active::after{
  content:"";position:absolute;left:11px;right:11px;bottom:2px;height:2px;
  background:var(--neon);border-radius:2px;
  box-shadow:0 0 10px var(--neon);
}
.head-cta{margin-left:14px;display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:11px;
  background:transparent;border:1px solid var(--line);
  color:var(--txt);font-size:17px;
  align-items:center;justify-content:center;
  transition:border-color var(--t),color var(--t);
}
.nav-toggle:hover{border-color:var(--neon-line);color:var(--neon);}

.nav-drawer{
  position:fixed;top:0;right:0;height:100vh;width:min(320px,86vw);
  background:var(--ink-800);
  border-left:1px solid var(--line);
  padding:22px 20px 40px;
  transform:translateX(102%);
  transition:transform 220ms cubic-bezier(.2,.7,.3,1);
  z-index:1060;overflow-y:auto;
}
.nav-drawer.open{transform:translateX(0);}
.drawer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:22px;line-height:1.5;}
.drawer-list li{margin-bottom:4px;}
.drawer-list a{
  display:block;padding:12px 12px;border-radius:11px;
  color:var(--txt-2);font-size:15.5px;
  border:1px solid transparent;
}
.drawer-list a:hover{background:rgba(255,255,255,.04);color:var(--txt);border-color:var(--line);}
.drawer-list a.active{color:var(--txt);border-color:var(--neon-line);background:rgba(30,224,180,.07);box-shadow:var(--glow);}
.drawer-cta{margin-top:20px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,7,6,.66);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);
  z-index:1050;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* ============ 按钮 ============ */
.btn{
  --bs-btn-padding-x:26px;
  --bs-btn-padding-y:0;
  --bs-btn-font-size:15px;
  --bs-btn-font-weight:600;
  --bs-btn-border-radius:var(--r-btn);
  --bs-btn-color:var(--txt);
  --bs-btn-bg:transparent;
  --bs-btn-border-color:transparent;
  --bs-btn-hover-color:var(--txt);
  --bs-btn-hover-bg:transparent;
  --bs-btn-hover-border-color:transparent;
  --bs-btn-active-color:var(--txt);
  --bs-btn-active-bg:transparent;
  --bs-btn-active-border-color:transparent;
  --bs-btn-focus-box-shadow:none;
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:50px;line-height:1;border-width:1px;
  background-image:none;
  transition:transform var(--t),box-shadow var(--t),background-color var(--t),border-color var(--t),color var(--t);
}
.btn:active{transform:translateY(1px);}
.btn-sm-x{height:42px;--bs-btn-padding-x:20px;--bs-btn-font-size:14.5px;}
.btn-ember{
  --bs-btn-bg:var(--ember);
  --bs-btn-border-color:var(--ember);
  --bs-btn-color:#1E0F08;
  --bs-btn-hover-bg:#FF7C52;
  --bs-btn-hover-border-color:#FF7C52;
  --bs-btn-hover-color:#1E0F08;
  --bs-btn-active-bg:#EE5B2E;
  --bs-btn-active-color:#1E0F08;
  box-shadow:0 10px 24px rgba(255,106,61,.20);
}
.btn-ember:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,106,61,.32);}
.btn-ghost{
  --bs-btn-border-color:var(--neon-line);
  --bs-btn-color:var(--txt);
  --bs-btn-hover-bg:rgba(30,224,180,.08);
  --bs-btn-hover-border-color:var(--neon);
  --bs-btn-hover-color:var(--txt);
  --bs-btn-active-bg:rgba(30,224,180,.12);
  --bs-btn-active-color:var(--txt);
}
.btn-ghost:hover{transform:translateY(-2px);}
.btn-neon{
  --bs-btn-bg:var(--neon);
  --bs-btn-border-color:var(--neon);
  --bs-btn-color:#04231C;
  --bs-btn-hover-bg:#38EBC2;
  --bs-btn-hover-border-color:#38EBC2;
  --bs-btn-hover-color:#04231C;
  --bs-btn-active-bg:#15CDA3;
  --bs-btn-active-color:#04231C;
}
.btn-neon:hover{transform:translateY(-2px);box-shadow:var(--glow);}
.btn-quiet{
  --bs-btn-color:var(--txt-2);
  --bs-btn-hover-color:var(--lime);
  --bs-btn-hover-bg:rgba(255,255,255,.04);
  height:44px;
}
.btn-mid{height:44px;--bs-btn-padding-x:20px;--bs-btn-font-size:14.5px;}

/* ============ 面包屑 ============ */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--txt-3);margin-bottom:20px;}
.crumbs a{color:var(--txt-2);}
.crumbs a:hover{color:var(--neon);}
.crumbs .sep{color:var(--txt-3);opacity:.7;}
.crumbs [aria-current]{color:var(--lime);}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding:72px 0 84px;
  background-image:linear-gradient(180deg,rgba(10,15,14,.86) 0%,rgba(10,15,14,.94) 55%,var(--ink-900) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(30,224,180,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(30,224,180,.06) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.5;
  mask-image:radial-gradient(circle at 74% 30%,#000,transparent 66%);
  -webkit-mask-image:radial-gradient(circle at 74% 30%,#000,transparent 66%);
}
.page-hero .wrap{position:relative;z-index:2;}
.hero-lede{
  font-size:17.5px;color:var(--txt-2);max-width:40em;
  margin-bottom:26px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;
  font-size:13.5px;color:var(--txt-2);
  border:1px solid var(--line);
  background:rgba(22,32,30,.72);
}
.tag i{color:var(--neon);font-size:12px;}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-note{font-size:13.5px;color:var(--txt-3);margin-top:16px;}

.device-shot{
  position:relative;
  border-radius:var(--r-img);
  border:1px solid var(--neon-line);
  box-shadow:var(--shadow-card),var(--glow);
  overflow:hidden;
  margin:0;
}
.device-shot img{width:100%;border-radius:var(--r-img);}
.device-shot::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:38%;
  background:linear-gradient(180deg,transparent,rgba(10,15,14,.72));
  pointer-events:none;
}

/* ============ 数据条 ============ */
.stat-bar{
  margin-top:-46px;position:relative;z-index:3;
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.stat{padding:24px 22px;background:var(--ink-800);}
.stat-num{
  display:block;font-size:24px;font-weight:700;color:var(--lime);
  font-variant-numeric:tabular-nums;letter-spacing:.01em;line-height:1.3;
}
.stat-label{display:block;font-size:13.5px;color:var(--txt-3);margin-top:6px;}

/* ============ 通用区块 ============ */
.sec{padding:96px 0;}
.sec-alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:38em;margin-bottom:52px;}
.sec-head .kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--neon);
  text-transform:uppercase;margin-bottom:14px;
}
.sec-head .kicker::before{content:"";width:22px;height:2px;background:var(--neon);border-radius:2px;}
.sec-head h2{position:relative;padding-left:16px;}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;
  background:var(--neon);border-radius:3px;box-shadow:0 0 12px rgba(30,224,180,.7);
}
.sec-head p{color:var(--txt-2);margin-bottom:0;font-size:16.5px;}

/* ============ 时间轴 ============ */
.tl{position:relative;}
.tl::before{
  content:"";position:absolute;left:50%;top:12px;bottom:12px;width:1px;
  background:linear-gradient(180deg,transparent,var(--line) 12%,var(--line) 88%,transparent);
  transform:translateX(-50%);
}
.tl-item{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:34px 0;
}
.tl-media{margin:0;position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);transition:transform var(--t),border-color var(--t),box-shadow var(--t);}
.tl-media img{width:100%;border-radius:var(--r-img);transition:transform 260ms cubic-bezier(.2,.7,.3,1);}
.tl-item:hover .tl-media{border-color:var(--neon-line);transform:translateY(-4px);box-shadow:var(--shadow-card),var(--glow);}
.tl-item:hover .tl-media img{transform:scale(1.03);}
.tl-item:nth-child(even) .tl-media{order:2;}
.tl-body{position:relative;}
.tl-num{
  display:inline-block;font-size:34px;font-weight:700;line-height:1;
  color:transparent;
  -webkit-text-stroke:1px rgba(30,224,180,.6);
  font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.tl-body h3{margin-bottom:10px;font-size:21px;}
.tl-body p{color:var(--txt-2);margin-bottom:16px;font-size:16px;}
.tick-list li{
  position:relative;padding-left:24px;margin-bottom:10px;
  font-size:15px;color:var(--txt-2);line-height:1.75;
}
.tick-list li::before{
  content:"";position:absolute;left:0;top:.62em;
  width:9px;height:9px;border-radius:3px;
  background:rgba(201,255,77,.85);
  box-shadow:0 0 10px rgba(201,255,77,.4);
}

/* ============ 功能速览 ============ */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.mini-card{
  padding:26px 22px;
  background:var(--ink-700);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.mini-card:hover{transform:translateY(-4px);border-color:var(--neon-line);box-shadow:var(--shadow-card),var(--glow);}
.mini-icon{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--neon-line);
  color:var(--neon);font-size:17px;
  background:rgba(30,224,180,.06);
  margin-bottom:16px;
}
.mini-card h3{font-size:17.5px;margin-bottom:8px;}
.mini-card p{font-size:14.5px;color:var(--txt-2);margin-bottom:0;line-height:1.75;}

/* ============ 场景信息条 ============ */
.scene-list{display:grid;gap:16px;}
.scene-item{
  display:grid;grid-template-columns:64px 1fr auto;gap:22px;align-items:center;
  padding:22px 26px;
  background:var(--ink-800);
  border:1px solid var(--line);
  border-left:3px solid rgba(30,224,180,.35);
  border-radius:var(--r-card);
  transition:border-color var(--t),transform var(--t),background-color var(--t);
}
.scene-item:hover{border-left-color:var(--neon);transform:translateX(4px);background:var(--ink-700);}
.scene-idx{font-size:22px;font-weight:700;color:var(--lime);font-variant-numeric:tabular-nums;}
.scene-text h3{font-size:17.5px;margin-bottom:6px;}
.scene-text p{font-size:14.5px;color:var(--txt-2);margin-bottom:0;}
.scene-meta{font-size:13px;color:var(--txt-3);white-space:nowrap;border:1px solid var(--line);border-radius:999px;padding:5px 13px;}

/* ============ FAQ ============ */
.faq-x .accordion-item{
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  margin-bottom:14px;
  overflow:hidden;
}
.faq-x .accordion-button{
  width:100%;
  background:transparent;
  color:var(--txt);
  font-size:17px;font-weight:600;
  line-height:1.6;
  padding:22px 24px 22px 26px;
  box-shadow:none;
  border-radius:var(--r-card);
  border-left:3px solid transparent;
  transition:background-color var(--t),border-color var(--t),color var(--t);
}
.faq-x .accordion-button:not(.collapsed){
  background:rgba(30,224,180,.05);
  color:var(--txt);
  border-left-color:var(--neon);
  box-shadow:none;
}
.faq-x .accordion-button:focus{box-shadow:none;border-color:var(--line);}
.faq-x .accordion-button::after{
  content:"+";
  background-image:none;
  font-size:24px;font-weight:400;line-height:1;
  color:var(--neon);
  width:auto;height:auto;
  display:flex;align-items:center;justify-content:center;
  margin-left:16px;
  transition:transform 220ms cubic-bezier(.2,.7,.3,1),color var(--t);
}
.faq-x .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--lime);}
.faq-x .accordion-body{
  padding:4px 26px 24px;
  color:var(--txt-2);font-size:15.5px;line-height:1.85;
}

/* ============ 下载 CTA ============ */
.dl-sec{
  position:relative;
  padding:88px 0;
  background-image:linear-gradient(180deg,rgba(10,15,14,.9),rgba(10,15,14,.96)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-top:1px solid var(--line);
}
.dl-panel{
  background:rgba(22,32,30,.86);
  border:1px solid var(--neon-line);
  border-radius:var(--r-card);
  padding:44px;
  box-shadow:var(--shadow-card);
}
.dl-panel h2{margin-bottom:14px;}
.dl-panel > p{color:var(--txt-2);max-width:40em;}
.dl-actions{display:flex;flex-wrap:wrap;gap:14px;margin:26px 0 16px;}
.qr-box{
  width:140px;height:140px;flex:none;
  border:1px solid var(--neon-line);
  border-radius:12px;
  background:
    repeating-linear-gradient(90deg,rgba(232,241,238,.14) 0 8px,transparent 8px 16px),
    repeating-linear-gradient(0deg,rgba(232,241,238,.14) 0 8px,transparent 8px 16px),
    var(--ink-900);
  display:flex;align-items:center;justify-content:center;
  color:var(--txt-3);font-size:12.5px;text-align:center;
  line-height:1.5;
}
.dl-flex{display:flex;gap:32px;align-items:flex-start;flex-wrap:wrap;}
.dl-flex .dl-text{flex:1 1 380px;}
.dl-note{font-size:13.5px;color:var(--txt-3);margin-bottom:0;}

/* ============ 页脚 ============ */
.site-foot{
  background:var(--ink-foot);
  padding:70px 0 26px;
  position:relative;
  border-top:1px solid var(--line);
}
.site-foot::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--neon),var(--lime),transparent);
  opacity:.85;
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:14px;line-height:1.5;}
.foot-desc{font-size:14px;color:var(--txt-2);line-height:1.8;margin-bottom:20px;}
.foot-title{font-size:14px;font-weight:600;color:var(--txt);letter-spacing:.06em;margin-bottom:16px;}
.foot-list li{margin-bottom:10px;}
.foot-list a,.foot-list span{font-size:14px;color:var(--txt-2);display:inline-block;transition:color var(--t),transform var(--t);}
.foot-list a:hover{color:var(--neon);transform:translateX(2px);}
.sub-form{display:flex;gap:10px;flex-wrap:wrap;}
.sub-form input{
  flex:1 1 170px;min-width:0;
  height:44px;padding:0 14px;
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:12px;
  color:var(--txt);font-size:14.5px;
  transition:border-color var(--t),box-shadow var(--t);
}
.sub-form input::placeholder{color:var(--txt-3);}
.sub-form input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(30,224,180,.16);}
.form-tip{font-size:13px;margin:10px 0 0;min-height:20px;color:var(--txt-3);}
.form-tip.err{color:var(--ember);}
.form-tip.ok{color:var(--neon);}
.foot-bottom{
  margin-top:46px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--txt-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:991px){
  .main-nav,.head-cta .btn{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .sec{padding:72px 0;}
  .tl::before{display:none;}
  .tl-item{grid-template-columns:1fr;gap:26px;padding:26px 0;}
  .tl-item:nth-child(even) .tl-media{order:0;}
  .stat-bar{grid-template-columns:repeat(2,1fr);margin-top:32px;}
  .dl-panel{padding:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .page-hero{padding:48px 0 56px;}
  .sec{padding:56px 0;}
  .sec-head{margin-bottom:34px;}
  .grid-4{grid-template-columns:1fr;}
  .scene-item{grid-template-columns:1fr;gap:12px;padding:20px;}
  .scene-meta{justify-self:start;}
  .foot-grid{grid-template-columns:1fr;gap:30px;}
  .foot-bottom{flex-direction:column;}
  .dl-sec{padding:60px 0;}
}
@media (max-width:575px){
  .btn{--bs-btn-padding-x:20px;}
  .cta-row .btn{width:100%;}
  .stat{padding:18px 16px;}
  .stat-num{font-size:20px;}
  .dl-actions .btn{width:100%;}
  .qr-box{width:120px;height:120px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .btn:hover,.mini-card:hover,.tl-item:hover .tl-media{transform:none;}
}

/* roulang page: article */
:root{
  --ink-900:#0A0F0E;
  --ink-800:#101716;
  --ink-700:#16201E;
  --ink-600:#1D2926;
  --foot-bg:#070B0A;
  --neon:#1EE0B4;
  --neon-line:rgba(30,224,180,.35);
  --neon-glow:0 0 24px rgba(30,224,180,.18);
  --lime:#C9FF4D;
  --ember:#FF6A3D;
  --txt:#E8F1EE;
  --txt-2:#9AAEAA;
  --txt-3:#647673;
  --line:rgba(255,255,255,.08);
  --r-card:16px;
  --r-btn:14px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-card:0 10px 30px rgba(0,0,0,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --font:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;

  --bs-body-bg:var(--ink-900);
  --bs-body-color:var(--txt);
  --bs-primary:var(--neon);
  --bs-border-color:var(--line);
  --bs-link-color:var(--neon);
  --bs-link-hover-color:var(--lime);
  --bs-font-sans-serif:var(--font);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--txt);
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--txt);text-decoration:none;transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);}
a:hover{color:var(--neon);}
button{font-family:var(--font);}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.005em;}
p{margin:0;}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(30,224,180,.28);color:#fff;}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1440px){.wrap{max-width:1280px;}}

/* ============ 顶栏 ============ */
.site-head{position:sticky;top:0;z-index:1030;background:rgba(10,15,14,.92);transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);border-bottom:1px solid transparent;}
.site-head.scrolled{backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);}
.head-line{height:1px;background:linear-gradient(90deg,transparent 0%,var(--neon) 35%,var(--lime) 65%,transparent 100%);opacity:.9;}
.head-inner{display:flex;align-items:center;gap:22px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--txt);white-space:nowrap;flex-shrink:0;}
.brand:hover{color:var(--txt);}
.brand-mark{width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,var(--neon),var(--lime));box-shadow:var(--neon-glow);flex-shrink:0;}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link-x{position:relative;display:inline-flex;align-items:center;padding:8px 12px;font-size:15px;font-weight:500;color:var(--txt-2);border-radius:10px;white-space:nowrap;}
.nav-link-x:hover{color:#fff;background:rgba(255,255,255,.045);}
.nav-link-x.active{color:var(--txt);}
.nav-link-x.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--neon);box-shadow:0 0 12px rgba(30,224,180,.6);}
.head-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--txt);align-items:center;justify-content:center;cursor:pointer;}
.nav-toggle:hover{border-color:var(--neon-line);color:var(--neon);}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(4,7,6,.7);opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);z-index:1040;}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{position:fixed;top:0;right:0;width:min(86vw,340px);height:100%;background:var(--ink-800);border-left:1px solid var(--line);transform:translateX(100%);transition:transform 240ms var(--ease);z-index:1050;padding:20px;overflow-y:auto;display:flex;flex-direction:column;gap:8px;}
.drawer.open{transform:none;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:10px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--txt-2);font-size:20px;line-height:1;cursor:pointer;}
.drawer-close:hover{color:var(--neon);border-color:var(--neon-line);}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:16px;}
.drawer-link{padding:12px 14px;border-radius:12px;font-size:15.5px;}
.drawer-link.active{background:rgba(30,224,180,.08);color:var(--neon);}
.drawer-link.active::after{display:none;}

/* ============ 按钮 ============ */
.btn-ember,.btn-neon,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font);font-weight:600;font-size:15px;line-height:1;
  border:1px solid transparent;cursor:pointer;text-align:center;white-space:nowrap;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn-ember{background:var(--ember);color:#1A0D07;padding:0 26px;height:48px;border-radius:var(--r-pill);}
.btn-ember:hover{background:#FF7C54;color:#1A0D07;transform:translateY(-2px);box-shadow:0 10px 26px rgba(255,106,61,.32);}
.btn-ember:active{transform:translateY(1px);}
.btn-neon{background:transparent;border-color:var(--neon-line);color:var(--neon);padding:0 24px;height:46px;border-radius:var(--r-btn);}
.btn-neon:hover{background:rgba(30,224,180,.1);border-color:var(--neon);color:var(--neon);box-shadow:var(--neon-glow);transform:translateY(-2px);}
.btn-neon:active{transform:translateY(1px);}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line);color:var(--txt);padding:0 24px;height:46px;border-radius:var(--r-btn);}
.btn-ghost:hover{border-color:var(--neon-line);color:var(--txt);background:rgba(30,224,180,.06);transform:translateY(-2px);}
.btn-sm-x{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-pill);}
.btn-wide{width:100%;}

/* ============ 面包屑 ============ */
.crumbs-row{padding-top:26px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--txt-3);line-height:1.6;}
.crumbs a{color:var(--txt-2);}
.crumbs a:hover{color:var(--neon);}
.crumbs .sep{color:rgba(100,118,115,.7);}
.crumbs .cur{color:var(--txt-3);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头 ============ */
.post-hero{padding:20px 0 26px;}
.badge-x{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);background:rgba(30,224,180,.1);border:1px solid var(--neon-line);color:var(--neon);font-size:13px;font-weight:600;letter-spacing:.02em;}
.badge-sm{height:26px;padding:0 11px;font-size:12px;}
.post-title{font-size:clamp(26px,4vw,42px);line-height:1.3;letter-spacing:-.01em;margin:18px 0 18px;max-width:22em;color:var(--txt);}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;color:var(--txt-3);font-size:14px;}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--txt-3);opacity:.55;}
.post-meta b{color:var(--lime);font-weight:600;font-variant-numeric:tabular-nums;}

/* ============ 封面 ============ */
.post-cover{position:relative;margin:0 0 42px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:var(--ink-700);}
.post-cover img{width:100%;aspect-ratio:16/8;object-fit:cover;}
.post-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,15,14,0) 52%,rgba(10,15,14,.62) 100%);pointer-events:none;}

/* ============ 正文布局 ============ */
.post-layout{padding-bottom:20px;}
.post-body{
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:38px 40px 30px;
  box-shadow:var(--shadow-card);
  word-break:break-word;
}
.post-body > *:first-child{margin-top:0;}
.post-body h2{font-size:clamp(20px,2.4vw,26px);line-height:1.5;font-weight:700;margin:44px 0 16px;padding-left:14px;position:relative;}
.post-body h2::before{content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:3px;border-radius:2px;background:var(--neon);box-shadow:0 0 12px rgba(30,224,180,.45);}
.post-body h3{font-size:19px;font-weight:600;margin:30px 0 12px;color:var(--txt);}
.post-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;color:var(--txt);}
.post-body p{margin:0 0 1.2em;line-height:1.9;color:#DCE7E3;}
.post-body ul,.post-body ol{margin:0 0 1.4em;padding-left:1.45em;}
.post-body ul{list-style:disc;}
.post-body ol{list-style:decimal;}
.post-body li{margin-bottom:.55em;line-height:1.85;color:#DCE7E3;}
.post-body li::marker{color:var(--neon);}
.post-body blockquote{margin:28px 0;padding:18px 22px;background:var(--ink-700);border-left:3px solid var(--lime);border-radius:0 12px 12px 0;color:var(--txt-2);}
.post-body blockquote p:last-child{margin-bottom:0;}
.post-body img{border-radius:var(--r-img);margin:22px 0;}
.post-body figure{margin:26px 0;}
.post-body figcaption{font-size:13px;color:var(--txt-3);text-align:center;margin-top:10px;line-height:1.6;}
.post-body a{color:var(--neon);text-decoration:underline;text-underline-offset:3px;}
.post-body strong{color:#fff;font-weight:600;}
.post-body hr{border:0;border-top:1px solid var(--line);margin:34px 0;}
.post-body table{width:100%;border-collapse:collapse;font-size:15px;margin:22px 0;}
.post-body th,.post-body td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;}
.post-body th{color:var(--txt-2);font-weight:600;background:rgba(255,255,255,.02);}
.post-body code{background:var(--ink-700);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:.92em;color:var(--lime);}

/* 空态 */
.empty-box{text-align:center;padding:54px 22px;border:1px dashed var(--neon-line);border-radius:var(--r-card);background:rgba(30,224,180,.03);}
.empty-box .empty-ico{width:52px;height:52px;margin:0 auto 16px;border-radius:14px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--neon);font-size:22px;}
.empty-box h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.empty-box p{color:var(--txt-2);font-size:15px;margin-bottom:20px;}

/* 标签 */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:26px;}
.tag-label{font-size:13.5px;color:var(--txt-3);margin-right:2px;}
.tag-x{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);background:var(--ink-700);border:1px solid var(--line);color:var(--txt-2);font-size:13.5px;transition:all var(--dur) var(--ease);}
.tag-x:hover{border-color:var(--neon-line);color:var(--neon);background:rgba(30,224,180,.08);}

/* 正文内下载条 */
.inline-dl{margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  background:linear-gradient(135deg,rgba(30,224,180,.09),rgba(201,255,77,.035));
  border:1px solid var(--neon-line);border-radius:var(--r-card);padding:24px 26px;}
.inline-dl h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.inline-dl p{color:var(--txt-2);font-size:14px;line-height:1.75;margin:0;}
.inline-dl .dl-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* 返回分类 */
.back-cat{display:inline-flex;align-items:center;gap:8px;margin-top:30px;font-size:14.5px;color:var(--txt-2);}
.back-cat:hover{color:var(--neon);}

/* ============ 侧栏 ============ */
.side-sticky{position:sticky;top:92px;display:grid;gap:20px;}
.side-card{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-card);}
.side-card h3{font-size:16px;font-weight:600;margin:0 0 14px;display:flex;align-items:center;gap:9px;line-height:1.4;}
.side-card h3::before{content:"";width:3px;height:15px;border-radius:2px;background:var(--neon);box-shadow:0 0 10px rgba(30,224,180,.5);flex-shrink:0;}
.dl-line{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--txt-2);padding:10px 0;border-bottom:1px dashed var(--line);}
.dl-line:last-of-type{border-bottom:0;}
.dl-line b{color:var(--lime);font-weight:600;font-variant-numeric:tabular-nums;}
.side-note{font-size:13px;color:var(--txt-3);line-height:1.7;margin:14px 0 0;}
.side-list{list-style:none;display:grid;gap:2px;}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--txt-2);}
.side-list a:hover{background:rgba(30,224,180,.08);color:var(--neon);transform:translateX(2px);}
.side-list a span{color:var(--txt-3);font-size:13px;}

/* ============ 延伸阅读 ============ */
.rel-section{padding:56px 0 8px;}
.sec-head{margin-bottom:28px;}
.sec-head h2{font-size:clamp(22px,3vw,30px);line-height:1.4;padding-left:14px;position:relative;}
.sec-head h2::before{content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:3px;border-radius:2px;background:var(--neon);box-shadow:0 0 12px rgba(30,224,180,.45);}
.sec-sub{color:var(--txt-2);font-size:15px;margin-top:10px;line-height:1.8;}
.rel-card{display:flex;flex-direction:column;height:100%;background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);}
.rel-card:hover{transform:translateY(-4px);border-color:var(--neon-line);box-shadow:0 16px 36px rgba(0,0,0,.45);color:var(--txt);}
.rel-card .thumb{display:block;overflow:hidden;border-bottom:1px solid var(--line);}
.rel-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 260ms var(--ease);}
.rel-card:hover .thumb img{transform:scale(1.04);}
.rel-body{display:flex;flex-direction:column;gap:10px;padding:20px;flex:1;}
.rel-title{font-size:17px;font-weight:600;line-height:1.55;color:var(--txt);}
.rel-desc{font-size:14px;line-height:1.75;color:var(--txt-2);flex:1;}
.rel-more{font-size:13.5px;color:var(--neon);font-weight:600;}

/* ============ 收口 CTA ============ */
.end-cta{padding:72px 0 88px;}
.cta-panel{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  background:linear-gradient(135deg,rgba(30,224,180,.1),rgba(201,255,77,.04) 55%,rgba(255,106,61,.07));
  border:1px solid var(--neon-line);border-radius:22px;padding:36px 38px;position:relative;overflow:hidden;}
.cta-panel::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--neon),var(--lime),transparent);}
.cta-panel h2{font-size:clamp(21px,2.6vw,28px);line-height:1.45;margin-bottom:12px;}
.cta-panel p{color:var(--txt-2);font-size:15px;line-height:1.85;max-width:56ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-foot{background:var(--foot-bg);border-top:1px solid var(--line);position:relative;padding:64px 0 0;margin-top:20px;}
.site-foot::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--neon),var(--lime),transparent);}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:14px;color:var(--txt);}
.brand-dot{width:10px;height:10px;border-radius:3px;background:linear-gradient(135deg,var(--neon),var(--lime));flex-shrink:0;}
.foot-desc{color:var(--txt-2);font-size:14.5px;line-height:1.8;margin:0 0 18px;max-width:36ch;}
.sub-form{display:flex;gap:10px;max-width:370px;}
.sub-form input{flex:1;min-width:0;height:40px;padding:0 14px;border-radius:10px;background:var(--ink-800);border:1px solid var(--line);color:var(--txt);font-size:14px;font-family:var(--font);transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);}
.sub-form input::placeholder{color:var(--txt-3);}
.sub-form input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(30,224,180,.14);}
.btn-mid{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.form-tip{font-size:13px;color:var(--ember);margin:8px 0 0;min-height:18px;line-height:1.6;}
.foot-title{font-size:15px;font-weight:600;margin:0 0 16px;color:var(--txt);}
.foot-list{list-style:none;display:grid;gap:10px;font-size:14px;}
.foot-list a,.foot-list span{color:var(--txt-2);line-height:1.7;}
.foot-list a{display:inline-block;}
.foot-list a:hover{color:var(--neon);transform:translateX(2px);}
.foot-bottom{margin-top:48px;border-top:1px solid var(--line);padding:20px 0 22px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:var(--txt-3);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .foot-grid{grid-template-columns:1.6fr 1fr 1fr;}
  .foot-grid > div:last-child{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .head-actions .btn-ember{display:none;}
  .head-inner{height:62px;}
  .side-sticky{position:static;margin-top:12px;}
  .post-body{padding:26px 22px 20px;}
  .cta-panel{padding:28px 24px;border-radius:18px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .post-cover{margin-bottom:30px;}
  .post-cover img{aspect-ratio:16/10;}
  .rel-section{padding:44px 0 0;}
  .end-cta{padding:56px 0 68px;}
  .site-foot{padding-top:48px;}
}
@media (max-width:575.98px){
  .wrap{padding:0 16px;}
  .head-inner{height:60px;}
  .brand{font-size:16px;}
  .post-title{font-size:26px;}
  .crumbs .cur{max-width:26ch;}
  .post-body{padding:22px 16px 16px;border-radius:14px;}
  .inline-dl{padding:20px 18px;}
  .inline-dl .dl-actions{width:100%;}
  .inline-dl .dl-actions .btn-ember,.inline-dl .dl-actions .btn-ghost{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn-ember,.cta-actions .btn-ghost{width:100%;}
  .foot-grid{grid-template-columns:1fr;}
  .sub-form{max-width:100%;}
  .foot-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:1ms !important;animation-duration:1ms !important;scroll-behavior:auto !important;}
  .btn-ember:hover,.btn-neon:hover,.btn-ghost:hover,.rel-card:hover{transform:none;}
}

/* roulang page: category2 */
:root{
  --ink-900:#0A0F0E;
  --ink-800:#101716;
  --ink-700:#16201E;
  --ink-600:#1D2926;
  --foot:#070B0A;
  --neon:#1EE0B4;
  --lime:#C9FF4D;
  --ember:#FF6A3D;
  --tx:#E8F1EE;
  --tx-2:#9AAEAA;
  --tx-3:#647673;
  --line:rgba(255,255,255,.08);
  --line-neon:rgba(30,224,180,.35);
  --r-card:16px;
  --r-btn:14px;
  --r-img:12px;
  --sh:0 10px 30px rgba(0,0,0,.35);
  --glow:0 0 24px rgba(30,224,180,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:180ms cubic-bezier(.2,.7,.3,1);

  --bs-body-bg:#0A0F0E;
  --bs-body-color:#E8F1EE;
  --bs-primary:#1EE0B4;
  --bs-primary-rgb:30,224,180;
  --bs-link-color:#1EE0B4;
  --bs-link-hover-color:#C9FF4D;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-emphasis-color:#E8F1EE;
  --bs-secondary-color:#9AAEAA;
  --bs-font-sans-serif:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--tx);
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(900px 420px at 12% -6%, rgba(30,224,180,.09), transparent 62%),
    radial-gradient(700px 380px at 92% 4%, rgba(201,255,77,.05), transparent 60%);
  z-index:0;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--neon);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--lime);}
h1,h2,h3,h4{color:var(--tx);letter-spacing:-0.01em;margin:0;}
p{margin:0 0 1.1em;}
ul,ol{margin:0 0 1.1em;padding-left:1.4em;}
li{margin-bottom:.5em;}
button,input{font-family:inherit;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
@media (min-width:1440px){.wrap{max-width:1280px;}}
.num{font-variant-numeric:tabular-nums;}

/* ===== 顶栏 ===== */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(10,15,14,.92);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t),backdrop-filter var(--t);
}
.site-head::before{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent,rgba(30,224,180,.9),rgba(201,255,77,.9),transparent);
}
.site-head.scrolled{
  backdrop-filter:blur(12px);
  background:rgba(10,15,14,.88);
  border-bottom-color:var(--line);
}
.head-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:68px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--tx);font-weight:700;font-size:17px;letter-spacing:.01em;white-space:nowrap;}
.brand:hover{color:var(--tx);}
.brand-dot{
  width:10px;height:10px;border-radius:50%;flex:0 0 10px;
  background:var(--neon);box-shadow:0 0 12px rgba(30,224,180,.7);
}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link-x{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;font-weight:500;color:var(--tx-2);
  border-radius:10px;
  transition:color var(--t),background var(--t);
}
.nav-link-x::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:left center;
  transition:transform var(--t);
  border-radius:2px;
}
.nav-link-x:hover{color:var(--tx);background:rgba(255,255,255,.04);}
.nav-link-x:hover::after{transform:scaleX(1);opacity:.45;}
.nav-link-x.active{color:#fff;text-shadow:0 0 14px rgba(30,224,180,.5);}
.nav-link-x.active::after{transform:scaleX(1);opacity:1;box-shadow:0 0 12px rgba(30,224,180,.6);}
.head-act{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  background:transparent;padding:0;position:relative;
}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:2px;background:var(--tx);border-radius:2px;
  transition:transform var(--t),opacity var(--t);}
.nav-toggle span:nth-child(1){top:14px;}
.nav-toggle span:nth-child(2){top:20px;}
.nav-toggle span:nth-child(3){top:26px;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ===== 按钮 ===== */
.btn-ember,.btn-neon,.btn-ghost,.btn-quiet{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;text-align:center;transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
}
.btn-ember{background:var(--ember);color:#12100E;border-radius:999px;box-shadow:0 8px 22px rgba(255,106,61,.24);}
.btn-ember:hover{color:#12100E;transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,106,61,.36);}
.btn-ember:active{transform:translateY(1px);}
.btn-neon{background:var(--neon);color:#06201A;border-radius:999px;box-shadow:0 8px 22px rgba(30,224,180,.22);}
.btn-neon:hover{color:#06201A;transform:translateY(-2px);box-shadow:0 12px 28px rgba(30,224,180,.32);}
.btn-ghost{background:transparent;color:var(--tx);border-color:var(--line-neon);}
.btn-ghost:hover{color:var(--neon);border-color:var(--neon);transform:translateY(-2px);box-shadow:var(--glow);}
.btn-quiet{background:rgba(255,255,255,.05);color:var(--tx-2);border-color:var(--line);}
.btn-quiet:hover{color:var(--tx);border-color:var(--line-neon);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:12px;}
.btn-mid{min-height:44px;padding:0 20px;font-size:14px;border-radius:12px;}
a:focus-visible,button:focus-visible,input:focus-visible,.nav-link-x:focus-visible{
  outline:2px solid var(--neon);outline-offset:2px;border-radius:8px;
}

/* ===== 移动抽屉 ===== */
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,8,7,.68);backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:70;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);
  background:var(--ink-800);border-left:1px solid var(--line-neon);
  transform:translateX(100%);transition:transform 220ms var(--ease);
  z-index:80;padding:22px 20px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;margin-bottom:8px;}
.drawer-tip{color:var(--tx-3);font-size:13px;margin-bottom:20px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-nav a{
  padding:12px 14px;border-radius:12px;color:var(--tx-2);font-size:15px;
  border:1px solid transparent;transition:all var(--t);
}
.drawer-nav a:hover{background:rgba(255,255,255,.05);color:var(--tx);}
.drawer-nav a.active{color:#fff;border-color:var(--line-neon);background:rgba(30,224,180,.08);box-shadow:var(--glow);}

/* ===== Hero ===== */
.hero{
  position:relative;
  padding:72px 0 64px;
  background-image:linear-gradient(100deg,rgba(7,12,11,.96) 0%,rgba(9,14,13,.86) 46%,rgba(10,15,14,.62) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;opacity:.55;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
}
.hero .wrap{position:relative;z-index:2;}
.crumb{margin-bottom:22px;}
.breadcrumb{--bs-breadcrumb-divider:'/';background:transparent;margin:0;padding:0;font-size:13px;}
.breadcrumb-item,.breadcrumb-item a{color:var(--tx-3);}
.breadcrumb-item a:hover{color:var(--neon);}
.breadcrumb-item.active{color:var(--tx-2);}
.breadcrumb-item + .breadcrumb-item::before{color:var(--tx-3);}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;border:1px solid var(--line-neon);
  background:rgba(30,224,180,.07);color:var(--neon);
  font-size:13px;letter-spacing:.04em;margin-bottom:18px;
}
.kicker .dot{width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 10px rgba(201,255,77,.8);}
.hero h1{
  font-size:clamp(28px,5.2vw,52px);font-weight:700;line-height:1.25;letter-spacing:-0.01em;
  margin-bottom:18px;max-width:16em;
}
.hero-sub{font-size:clamp(16px,1.6vw,18px);color:var(--tx-2);max-width:34em;margin-bottom:26px;line-height:1.85;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;}
.badge-x{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;border:1px solid var(--line);
  background:rgba(22,32,30,.72);font-size:13px;color:var(--tx-2);
}
.badge-x b{color:var(--lime);font-weight:600;font-variant-numeric:tabular-nums;}

/* ===== 区块 ===== */
.sec{padding:72px 0;position:relative;z-index:1;}
.sec-tight{padding:56px 0;}
.sec-alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:44em;margin-bottom:34px;}
.sec-kicker{
  font-size:13px;letter-spacing:.12em;color:var(--neon);text-transform:uppercase;
  margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.sec-title{font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.35;margin-bottom:12px;}
.sec-desc{color:var(--tx-2);font-size:16px;margin:0;}

/* ===== 双栏：粘性目录 + 长文 ===== */
.toc-layout{display:grid;grid-template-columns:272px minmax(0,1fr);gap:48px;align-items:start;}
.toc-side{position:sticky;top:96px;}
.toc-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);padding:22px 20px;
}
.toc-title{font-size:13px;letter-spacing:.1em;color:var(--tx-3);margin:0 0 14px;}
.toc-list{list-style:none;margin:0;padding:0;}
.toc-list li{margin:0;}
.toc-item{
  display:block;padding:9px 12px;border-left:2px solid transparent;border-radius:0 10px 10px 0;
  color:var(--tx-2);font-size:14.5px;transition:all var(--t);
}
.toc-item:hover{color:var(--tx);background:rgba(255,255,255,.04);}
.toc-item.active{color:#fff;border-left-color:var(--neon);background:rgba(30,224,180,.08);box-shadow:inset 0 0 0 1px rgba(30,224,180,.12);}
.toc-cta{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);}
.toc-cta p{font-size:13px;color:var(--tx-3);margin:0 0 10px;}
.art-body{min-width:0;}
.art-sec{
  padding-bottom:34px;margin-bottom:34px;border-bottom:1px solid var(--line);
  scroll-margin-top:96px;
}
.art-sec:last-child{border-bottom:0;margin-bottom:0;}
.art-h2{
  position:relative;padding-left:16px;
  font-size:clamp(20px,2.2vw,25px);font-weight:700;line-height:1.4;margin-bottom:16px;
}
.art-h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:3px;
  background:var(--neon);box-shadow:0 0 12px rgba(30,224,180,.55);
}
.art-h3{font-size:19px;font-weight:600;margin:26px 0 10px;color:var(--tx);}
.art-p{color:#CBD8D4;font-size:16.5px;line-height:1.9;margin-bottom:1.1em;max-width:40em;}
.art-list{color:#CBD8D4;font-size:16px;line-height:1.9;max-width:40em;}
.art-list li::marker{color:var(--neon);}
.hl{color:var(--lime);font-variant-numeric:tabular-nums;font-weight:600;}

.note-card{
  background:var(--ink-700);border:1px solid var(--line);border-left:3px solid var(--lime);
  border-radius:0 var(--r-card) var(--r-card) 0;
  padding:18px 20px;margin:20px 0;box-shadow:var(--sh);
}
.note-card p:last-child{margin-bottom:0;}
.note-card .note-t{font-size:14px;color:var(--lime);margin:0 0 6px;font-weight:600;}
.note-card p{font-size:15px;color:var(--tx-2);margin:0;}

.figure{margin:24px 0;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--ink-700);box-shadow:var(--sh);}
.figure img{width:100%;height:auto;border-radius:0;transition:transform 320ms var(--ease);}
.figure:hover img{transform:scale(1.03);}
.figure figcaption{font-size:13px;color:var(--tx-3);padding:12px 16px;border-top:1px solid var(--line);}

/* 步骤流 */
.step-list{list-style:none;margin:22px 0;padding:0;counter-reset:st;max-width:40em;}
.step-list li{
  position:relative;padding:0 0 20px 54px;margin:0;counter-increment:st;
  border-left:1px solid var(--line);margin-left:18px;
}
.step-list li:last-child{border-left-color:transparent;padding-bottom:0;}
.step-list li::before{
  content:counter(st,decimal-leading-zero);
  position:absolute;left:-19px;top:0;
  width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--ink-700);border:1px solid var(--line-neon);
  color:var(--lime);font-size:13px;font-weight:600;font-variant-numeric:tabular-nums;
}
.step-list b{display:block;color:var(--tx);font-size:16.5px;margin-bottom:4px;font-weight:600;}
.step-list span{color:var(--tx-2);font-size:15px;line-height:1.8;display:block;}

/* 参数清单 */
.spec-block{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);margin:20px 0;}
.spec-row{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 20px;border-bottom:1px solid var(--line);}
.spec-row:last-child{border-bottom:0;}
.spec-k{color:var(--tx-2);font-size:14.5px;}
.spec-v{color:var(--lime);font-size:15px;font-weight:600;font-variant-numeric:tabular-nums;text-align:right;}
.spec-row.hi{background:rgba(30,224,180,.06);}
.spec-row.hi .spec-k{color:var(--tx);}

/* 拦截处理 */
.warn-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:22px 0;}
.warn-item{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh);transition:transform var(--t),border-color var(--t);
}
.warn-item:hover{transform:translateY(-4px);border-color:var(--line-neon);box-shadow:var(--sh),var(--glow);}
.warn-item h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.warn-item p{font-size:14.5px;color:var(--tx-2);line-height:1.8;margin:0;}
.warn-tag{
  display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;
  background:rgba(255,106,61,.12);color:var(--ember);border:1px solid rgba(255,106,61,.3);margin-bottom:10px;
}

/* ===== 评价墙 ===== */
.review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.review-col{display:flex;flex-direction:column;gap:20px;}
.review-col.offset{margin-top:34px;}
.review-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh);transition:transform var(--t),border-color var(--t);
}
.review-card:hover{transform:translateY(-4px);border-color:var(--line-neon);}
.stars{color:var(--ember);font-size:14px;letter-spacing:.16em;margin-bottom:10px;}
.review-card p{font-size:15px;color:#CBD8D4;line-height:1.85;margin:0 0 14px;}
.review-meta{font-size:13px;color:var(--tx-3);display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.review-meta .sep{width:4px;height:4px;border-radius:50%;background:var(--tx-3);display:inline-block;}

/* ===== FAQ ===== */
.faq-wrap{max-width:900px;}
.accordion-item{
  background:var(--ink-700);border:1px solid var(--line);border-radius:14px !important;
  margin-bottom:12px;overflow:hidden;
}
.accordion-button{
  background:var(--ink-700);color:var(--tx);font-size:17px;font-weight:600;
  padding:20px 22px;line-height:1.6;box-shadow:none;
}
.accordion-button:not(.collapsed){background:rgba(30,224,180,.07);color:#fff;box-shadow:inset 3px 0 0 var(--neon);}
.accordion-button:focus{box-shadow:none;}
.accordion-button::after{
  width:16px;height:16px;flex:0 0 16px;background-image:none;
  background-image:linear-gradient(var(--neon),var(--neon)),linear-gradient(var(--neon),var(--neon));
  background-size:16px 2px,2px 16px;background-position:center;background-repeat:no-repeat;
  transition:transform 200ms var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-body{color:var(--tx-2);font-size:15.5px;line-height:1.85;padding:4px 22px 22px;}

/* ===== 下载 CTA ===== */
.cta-panel{
  background:linear-gradient(140deg,rgba(22,32,30,.96),rgba(10,15,14,.96));
  border:1px solid var(--line-neon);border-radius:22px;
  padding:44px;box-shadow:var(--sh),var(--glow);
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:40px;align-items:center;
}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;line-height:1.35;}
.cta-panel p{color:var(--tx-2);font-size:15.5px;max-width:34em;margin-bottom:22px;}
.dl-group{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.fine-print{font-size:13px;color:var(--tx-3);margin-top:16px;line-height:1.7;}
.qr-box{
  width:140px;height:140px;border-radius:14px;border:1px solid var(--line-neon);
  background:
    linear-gradient(135deg,rgba(30,224,180,.1),rgba(201,255,77,.06)),
    repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 6px,transparent 6px 12px),
    var(--ink-800);
  display:flex;align-items:center;justify-content:center;position:relative;
  color:var(--tx-3);font-size:12px;text-align:center;
}
.qr-box::before,.qr-box::after{
  content:"";position:absolute;width:16px;height:16px;border:2px solid var(--lime);
}
.qr-box::before{top:8px;left:8px;border-right:0;border-bottom:0;border-radius:6px 0 0 0;}
.qr-box::after{bottom:8px;right:8px;border-left:0;border-top:0;border-radius:0 0 6px 0;}
.qr-note{font-size:13px;color:var(--tx-3);text-align:center;margin-top:10px;}

/* ===== 页脚 ===== */
.site-foot{
  background:var(--foot);border-top:1px solid var(--line);
  padding:64px 0 26px;margin-top:0;position:relative;z-index:1;
}
.site-foot::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(30,224,180,.85),rgba(201,255,77,.85),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:12px;}
.foot-desc{font-size:14px;color:var(--tx-2);line-height:1.8;margin-bottom:18px;max-width:30em;}
.foot-title{font-size:14px;font-weight:600;color:var(--tx);margin-bottom:14px;letter-spacing:.04em;}
.foot-list{list-style:none;margin:0;padding:0;}
.foot-list li{margin-bottom:10px;font-size:14px;color:var(--tx-2);}
.foot-list a{color:var(--tx-2);transition:color var(--t),transform var(--t);display:inline-block;}
.foot-list a:hover{color:var(--neon);transform:translateX(2px);}
.sub-form{display:flex;gap:8px;max-width:340px;}
.sub-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;border-radius:12px;
  background:var(--ink-800);border:1px solid var(--line);color:var(--tx);font-size:14px;
  transition:border-color var(--t),box-shadow var(--t);
}
.sub-form input::placeholder{color:var(--tx-3);}
.sub-form input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(30,224,180,.16);}
.form-tip{font-size:13px;color:var(--ember);margin:10px 0 0;min-height:18px;}
.form-tip.ok{color:var(--neon);}
.foot-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--tx-3);
}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .warn-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .review-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .review-col.offset{margin-top:0;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .nav-toggle{display:block;}
  .toc-layout{grid-template-columns:1fr;gap:28px;}
  .toc-side{position:static;}
  .toc-list{display:flex;flex-wrap:wrap;gap:6px;}
  .toc-list li{flex:0 0 auto;}
  .toc-item{border-left:0;border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:13.5px;}
  .toc-item.active{border-color:var(--line-neon);background:rgba(30,224,180,.1);}
  .cta-panel{grid-template-columns:1fr;padding:34px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .sec{padding:56px 0;}
  .sec-tight{padding:44px 0;}
  .hero{padding:52px 0 48px;}
}
@media (max-width:767px){
  .head-inner{height:60px;}
  .warn-grid{grid-template-columns:1fr;}
  .review-grid{grid-template-columns:1fr;}
  .hero-badges{gap:8px;}
  .badge-x{font-size:12px;padding:8px 13px;}
  .spec-row{flex-direction:column;align-items:flex-start;gap:4px;}
  .spec-v{text-align:left;}
  .cta-panel{padding:26px 20px;border-radius:18px;}
  .dl-group .btn-ember,.dl-group .btn-ghost,.dl-group .btn-neon{width:100%;}
  .qr-box{margin:0 auto;}
}
@media (max-width:575px){
  .wrap{padding:0 16px;}
  .sec{padding:48px 0;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;}
  .art-p,.art-list{font-size:16px;}
  .accordion-button{font-size:16px;padding:16px 18px;}
  .accordion-body{padding:4px 18px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --ink-950:#070B0A;
  --ink-900:#0A0F0E;
  --ink-800:#101716;
  --ink-700:#16201E;
  --neon:#1EE0B4;
  --lime:#C9FF4D;
  --ember:#FF6A3D;
  --text:#E8F1EE;
  --text-2:#9AAEAA;
  --text-3:#647673;
  --line:rgba(255,255,255,.08);
  --neon-line:rgba(30,224,180,.35);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;
  --shadow-card:0 10px 30px rgba(0,0,0,.35);
  --shadow-hi:0 18px 40px rgba(0,0,0,.45),0 0 24px rgba(30,224,180,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --wrap:1200px;

  --bs-primary:var(--neon);
  --bs-body-bg:var(--ink-900);
  --bs-body-color:var(--text);
  --bs-border-color:var(--line);
  --bs-link-color:var(--neon);
  --bs-link-hover-color:var(--lime);
  --bs-font-sans-serif:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--neon);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--lime)}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text)}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:1000;
  background:rgba(10,15,14,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
}
.topbar.scrolled{box-shadow:0 8px 30px rgba(0,0,0,.45)}
.topline{height:1px;background:linear-gradient(90deg,transparent,var(--neon),var(--lime),transparent)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:18px;letter-spacing:.01em;white-space:nowrap}
.brand:hover{color:var(--text)}
.brand-dot{width:10px;height:10px;border-radius:50%;background:var(--neon);box-shadow:0 0 12px rgba(30,224,180,.85);flex:none}
.main-nav{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}
.nav-link-x{position:relative;padding:8px 12px;color:var(--text-2);font-size:15px;font-weight:500;border-radius:10px;transition:color var(--dur) var(--ease),background var(--dur) var(--ease)}
.nav-link-x::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--neon);transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.nav-link-x:hover{color:var(--text)}
.nav-link-x:hover::after{transform:scaleX(1);background:rgba(255,255,255,.4)}
.nav-link-x.active{color:var(--text)}
.nav-link-x.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(30,224,180,.65)}
.topbar-actions{display:flex;align-items:center;gap:12px}
.burger{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:transparent;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;transition:border-color var(--dur) var(--ease)}
.burger:hover{border-color:var(--neon-line)}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text)}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:290px;max-width:84vw;
  background:var(--ink-800);border-left:1px solid var(--line);
  padding:22px 18px;z-index:1200;overflow-y:auto;
  transform:translateX(100%);transition:transform 240ms var(--ease);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;padding-bottom:16px;margin-bottom:10px;border-bottom:1px solid var(--line)}
.drawer .nav-link-x{display:block;padding:12px 14px;border-radius:12px;font-size:15px}
.drawer .nav-link-x::after{display:none}
.drawer .nav-link-x:hover{background:rgba(255,255,255,.04)}
.drawer .nav-link-x.active{background:rgba(30,224,180,.1);color:var(--text);box-shadow:inset 3px 0 0 var(--neon)}
.drawer-cta{margin-top:16px}
.drawer-mask{position:fixed;inset:0;background:rgba(4,8,7,.62);z-index:1100;opacity:0;pointer-events:none;transition:opacity var(--dur) var(--ease)}
.drawer-mask.show{opacity:1;pointer-events:auto}

/* ---------- 按钮 ---------- */
.btn-ember,.btn-neon,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:14px;
  font-weight:600;font-size:16px;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn-ember{background:var(--ember);color:#14100E;border-radius:var(--r-pill);box-shadow:0 8px 24px rgba(255,106,61,.22)}
.btn-ember:hover{color:#14100E;transform:translateY(-2px);box-shadow:0 14px 32px rgba(255,106,61,.34)}
.btn-ember:active{transform:translateY(1px)}
.btn-neon{background:transparent;color:var(--neon);border-color:var(--neon-line)}
.btn-neon:hover{color:var(--neon);background:rgba(30,224,180,.1);box-shadow:0 0 24px rgba(30,224,180,.18);transform:translateY(-2px)}
.btn-neon:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{color:var(--text);border-color:var(--neon-line);background:rgba(255,255,255,.03);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px}
.btn-mid{height:44px;padding:0 20px;font-size:15px;border-radius:12px}
.btn-wide{width:100%}

/* ---------- 通用板块 ---------- */
.sec{padding:88px 0;position:relative}
.sec-alt{background:var(--ink-800)}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-title{position:relative;font-size:clamp(22px,3vw,32px);line-height:1.35;padding-left:16px;margin-bottom:14px}
.sec-title::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:3px;border-radius:2px;background:var(--neon);box-shadow:0 0 12px rgba(30,224,180,.5)}
.sec-desc{color:var(--text-2);font-size:16px;max-width:40em}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--text-2);font-size:13.5px;line-height:1.5;
  font-variant-numeric:tabular-nums;
}
.chip strong{color:var(--lime);font-weight:600}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--neon);flex:none}

/* ---------- Hero ---------- */
.hero{position:relative;padding:64px 0 72px;overflow:hidden;
  background:radial-gradient(900px 380px at 82% -12%,rgba(30,224,180,.13),transparent 62%),var(--ink-900);}
.hero::after{content:"";position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.webp);background-size:cover;background-position:center;opacity:.06;pointer-events:none}
.hero .wrap{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:24px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--neon)}
.crumb .sep{color:var(--text-3)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(28px,5.2vw,52px);line-height:1.25;letter-spacing:-.01em;margin-bottom:18px}
.hero-lead{font-size:18px;line-height:1.85;color:var(--text-2);max-width:34em;margin-bottom:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px}
.hero-media{position:relative}
.hero-media img{border-radius:var(--r-md);border:1px solid var(--neon-line);box-shadow:0 20px 50px rgba(0,0,0,.5);width:100%}
.hero-media::after{content:"";position:absolute;left:0;right:0;bottom:-26px;height:60px;background:linear-gradient(180deg,rgba(10,15,14,.65),transparent);filter:blur(6px);pointer-events:none}

/* ---------- 瀑布流卡片 ---------- */
.falls{column-count:3;column-gap:24px}
.fall{
  break-inside:avoid;-webkit-column-break-inside:avoid;
  display:block;width:100%;margin:0 0 24px;padding:22px;
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.fall:hover{transform:translateY(-4px);border-color:var(--neon-line);box-shadow:var(--shadow-hi)}
.fall h3{font-size:19px;line-height:1.5;margin-bottom:10px}
.fall p{color:var(--text-2);font-size:15.5px;line-height:1.8;margin-bottom:0}
.fall-tag{display:inline-block;font-size:12.5px;color:var(--lime);letter-spacing:.04em;margin-bottom:10px;font-weight:600}
.media{border-radius:var(--r-md);overflow:hidden;margin-bottom:16px;border:1px solid var(--line);background:var(--ink-800)}
.media img{width:100%;height:100%;object-fit:cover;transition:transform 220ms var(--ease)}
.fall:hover .media img{transform:scale(1.03)}
.media.a{aspect-ratio:16/10}
.media.b{aspect-ratio:4/3}
.media.c{aspect-ratio:1/1}
.media.d{aspect-ratio:16/9}
.fall-lead{
  column-span:all;display:grid;grid-template-columns:1.05fr 1fr;gap:0;align-items:stretch;
  padding:0;overflow:hidden;background:linear-gradient(120deg,var(--ink-700),var(--ink-800));
  border-color:var(--neon-line);
}
.fall-lead .lead-body{padding:32px 32px 32px 28px}
.fall-lead h3{font-size:clamp(20px,2.4vw,26px);margin-bottom:14px}
.fall-lead p{font-size:16px;color:var(--text-2)}
.fall-lead .lead-media{min-height:260px;position:relative;overflow:hidden}
.fall-lead .lead-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:transform 260ms var(--ease)}
.fall-lead:hover .lead-media img{transform:scale(1.03)}
.lead-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.lead-list li{position:relative;padding-left:20px;font-size:15.5px;color:var(--text-2);line-height:1.75}
.lead-list li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;background:var(--neon);box-shadow:0 0 10px rgba(30,224,180,.5)}

/* ---------- 提示信息条 ---------- */
.strip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.strip{
  position:relative;padding:24px 22px 24px 26px;
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-lg);
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.strip:hover{border-color:var(--neon-line);transform:translateY(-4px)}
.strip::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:2px;background:var(--lime)}
.strip h3{font-size:17.5px;margin-bottom:8px}
.strip p{color:var(--text-2);font-size:15px;line-height:1.8;margin-bottom:0}

/* ---------- 适配清单 ---------- */
.spec-list{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-card);
}
.spec-row{
  display:grid;grid-template-columns:230px 200px 1fr;gap:18px;align-items:center;
  padding:18px 24px;border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease);
}
.spec-row:last-child{border-bottom:0}
.spec-row:hover{background:rgba(30,224,180,.05)}
.spec-row.hi{background:linear-gradient(90deg,rgba(30,224,180,.08),transparent 60%)}
.spec-key{font-size:15.5px;font-weight:600;color:var(--text)}
.spec-val{color:var(--lime);font-weight:600;font-size:15.5px;font-variant-numeric:tabular-nums}
.spec-note{color:var(--text-2);font-size:14.5px}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-item[open]{border-color:var(--neon-line);background:var(--ink-800)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 22px;position:relative;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:2px;background:var(--neon);opacity:0;transition:opacity var(--dur) var(--ease)}
.faq-item[open] summary::before{opacity:1}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--neon);line-height:1;
  transition:transform var(--dur) var(--ease);
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-body{padding:0 22px 22px;color:var(--text-2);font-size:16px;line-height:1.85}

/* ---------- CTA 下载区 ---------- */
.cta-sec{padding:80px 0}
.cta-box{
  position:relative;overflow:hidden;
  background:linear-gradient(130deg,var(--ink-700),var(--ink-800));
  border:1px solid var(--neon-line);border-radius:var(--r-lg);
  padding:44px 40px;display:grid;grid-template-columns:1fr auto;gap:36px;align-items:center;
  box-shadow:var(--shadow-card);
}
.cta-box h2{font-size:clamp(22px,3vw,30px);line-height:1.35;margin-bottom:14px;padding-left:0}
.cta-box .sec-desc{max-width:36em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}
.cta-note{margin-top:16px;font-size:13.5px;color:var(--text-3);line-height:1.7}
.qr-wrap{display:flex;flex-direction:column;align-items:center;gap:12px}
.qr{width:140px;height:140px;border-radius:var(--r-md);background:var(--ink-900);border:1px solid var(--neon-line);position:relative;flex:none}
.qr::before,.qr::after{content:"";position:absolute;width:24px;height:24px;border:2px solid var(--neon)}
.qr::before{top:12px;left:12px;border-right:0;border-bottom:0;border-radius:4px 0 0 0}
.qr::after{bottom:12px;right:12px;border-left:0;border-top:0;border-radius:0 0 4px 0}
.qr span{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text-3);letter-spacing:.08em}
.qr-cap{font-size:13px;color:var(--text-3)}

/* ---------- 页脚 ---------- */
.site-foot{
  background:var(--ink-950);border-top:1px solid var(--line);
  padding:64px 0 28px;position:relative;
}
.site-foot::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--neon),var(--lime),transparent)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--text);margin-bottom:14px}
.foot-desc{color:var(--text-2);font-size:14.5px;line-height:1.8;margin-bottom:18px;max-width:28em}
.foot-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:14px}
.foot-list{display:flex;flex-direction:column;gap:10px}
.foot-list a,.foot-list span{color:var(--text-2);font-size:14.5px;display:inline-block;transition:color var(--dur) var(--ease),transform var(--dur) var(--ease)}
.foot-list a:hover{color:var(--neon);transform:translateX(2px)}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input{
  flex:1;min-width:180px;height:44px;padding:0 14px;
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-md);
  color:var(--text);font-size:14.5px;outline:none;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{border-color:var(--neon-line);box-shadow:0 0 0 3px rgba(30,224,180,.12)}
.form-tip{margin-top:10px;font-size:13.5px;min-height:18px;color:var(--text-3)}
.form-tip.err{color:var(--ember)}
.form-tip.ok{color:var(--neon)}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .falls{column-count:2}
  .hero-grid{gap:36px}
}
@media (max-width:991.98px){
  .main-nav{display:none}
  .burger{display:flex}
  .topbar-inner{height:60px}
  .sec{padding:72px 0}
  .hero{padding:48px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{order:2}
  .strip-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-box{grid-template-columns:1fr;padding:36px 28px}
  .qr-wrap{align-items:flex-start}
  .spec-row{grid-template-columns:200px 1fr;gap:8px 16px}
  .spec-note{grid-column:1 / -1;padding-left:0}
  .fall-lead{grid-template-columns:1fr}
  .fall-lead .lead-media{min-height:220px;order:-1;position:relative}
  .fall-lead .lead-media img{position:relative;height:220px}
  .fall-lead .lead-body{padding:26px 24px}
}
@media (max-width:767.98px){
  body{font-size:16px;line-height:1.85}
  .wrap{padding:0 16px}
  .brand{font-size:16px}
  .falls{column-count:1;column-gap:0}
  .sec{padding:56px 0}
  .hero{padding:36px 0 48px}
  .hero-lead{font-size:16.5px}
  .hero-cta .btn-ember,.hero-cta .btn-ghost{width:100%}
  .btn-ember,.btn-neon,.btn-ghost{height:48px;padding:0 20px}
  .foot-grid{grid-template-columns:1fr}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:16px 18px}
  .faq-item summary{padding:16px 48px 16px 18px;font-size:16px}
  .faq-body{padding:0 18px 18px;font-size:15.5px}
  .cta-box{padding:28px 20px}
  .cta-actions .btn-ember,.cta-actions .btn-ghost{width:100%}
  .foot-bottom{flex-direction:column;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category4 */
:root{
  --ink-950:#070B0A;
  --ink-900:#0A0F0E;
  --ink-800:#101716;
  --ink-700:#16201E;
  --neon:#1EE0B4;
  --lime:#C9FF4D;
  --ember:#FF6A3D;
  --text:#E8F1EE;
  --text-2:#9AAEAA;
  --text-3:#647673;
  --line:rgba(255,255,255,.08);
  --neon-line:rgba(30,224,180,.35);
  --r-card:16px;
  --r-btn:14px;
  --r-img:12px;
  --r-pill:999px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --glow:0 0 24px rgba(30,224,180,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;

  --bs-body-bg:var(--ink-900);
  --bs-body-color:var(--text);
  --bs-primary:var(--neon);
  --bs-link-color:var(--neon);
  --bs-link-hover-color:var(--lime);
  --bs-border-color:rgba(255,255,255,.08);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--neon);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--lime)}
button,input{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em}
p{margin:0 0 1.1em}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 容器 ---------- */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1440px){.wrap{max-width:1280px}}
@media (max-width:575.98px){.wrap{padding:0 16px}}

/* ---------- 顶栏 ---------- */
.site-head{
  position:sticky;top:0;z-index:1030;
  background:rgba(10,15,14,.92);
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.site-head::before{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,transparent 0%,rgba(30,224,180,.85) 35%,rgba(201,255,77,.85) 65%,transparent 100%);
}
.site-head.is-scrolled{backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 8px 24px rgba(0,0,0,.45)}
.head-inner{height:68px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);font-weight:700;font-size:17px;letter-spacing:.01em}
.brand:hover{color:var(--text)}
.brand-dot{width:10px;height:10px;border-radius:50%;background:var(--neon);box-shadow:0 0 14px rgba(30,224,180,.75);flex:0 0 auto}
.brand-text{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap}
.nav-link-x{
  position:relative;display:block;padding:8px 12px;
  font-size:15px;font-weight:500;color:var(--text-2);white-space:nowrap;
  border-radius:10px;transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-link-x::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--neon),var(--lime));transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link-x:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link-x:hover::after{transform:scaleX(1)}
.nav-link-x.active{color:var(--text);background:rgba(30,224,180,.08);box-shadow:var(--glow)}
.nav-link-x.active::after{transform:scaleX(1)}
.head-act{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle:hover{border-color:var(--neon-line);background:rgba(30,224,180,.08)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer{
  display:none;border-top:1px solid var(--line);
  background:rgba(7,11,10,.98);padding:14px 20px 22px;
}
.drawer .brand{margin-bottom:12px}
.drawer a.drawer-link{
  display:block;padding:12px 4px;color:var(--text-2);font-size:16px;
  border-bottom:1px solid var(--line);transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.drawer a.drawer-link:hover,.drawer a.drawer-link.active{color:var(--neon);padding-left:8px}
.drawer.is-open{display:block}
@media (max-width:991.98px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .head-inner{height:60px;gap:12px}
  .brand{font-size:15px}
}

/* ---------- 按钮 ---------- */
.btn-ember,.btn-neon,.btn-ghost,.btn-quiet{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-mid{min-height:44px;padding:0 20px;font-size:15px;border-radius:12px}
.btn-ember{background:var(--ember);color:#1a0a04;border-radius:var(--r-pill);box-shadow:0 10px 26px rgba(255,106,61,.22)}
.btn-ember:hover{color:#1a0a04;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,106,61,.34)}
.btn-neon{background:rgba(30,224,180,.12);color:var(--neon);border-color:var(--neon-line)}
.btn-neon:hover{color:#04231c;background:var(--neon);border-color:var(--neon);transform:translateY(-2px);box-shadow:var(--glow)}
.btn-ghost{background:transparent;color:var(--text);border-color:rgba(255,255,255,.18)}
.btn-ghost:hover{color:var(--neon);border-color:var(--neon-line);transform:translateY(-2px);box-shadow:var(--glow)}
.btn-quiet{background:rgba(255,255,255,.03);color:var(--text-2);border-color:var(--line)}
.btn-quiet:hover{color:var(--text);border-color:var(--neon-line)}
.btn-ember:active,.btn-neon:active,.btn-ghost:active,.btn-quiet:active{transform:translateY(0) scale(.99)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
@media (max-width:575.98px){
  .btn-row{flex-direction:column;align-items:stretch}
  .btn-row .btn-ember,.btn-row .btn-neon,.btn-row .btn-ghost,.btn-row .btn-quiet{width:100%}
}

/* ---------- 徽章 / 标签 ---------- */
.chip{
  display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 14px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--text-2);font-size:13px;font-weight:500;line-height:1;
}
.chip i{color:var(--neon);font-size:12px}
.chip strong{color:var(--lime);font-variant-numeric:tabular-nums;font-weight:600}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0}
.breadcrumb-x{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3)}
.breadcrumb-x a{color:var(--text-2)}
.breadcrumb-x a:hover{color:var(--neon)}
.breadcrumb-x .sep{color:rgba(255,255,255,.2)}
.breadcrumb-x .now{color:var(--neon)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:44px 0 72px;overflow:hidden}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(30,224,180,.10) 1px,transparent 1px);
  background-size:26px 26px;opacity:.5;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 70%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 70%);
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--neon);
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--neon),var(--lime))}
.hero h1{font-size:clamp(28px,5.2vw,52px);font-weight:700;line-height:1.25;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--neon)}
.hero-sub{font-size:17px;line-height:1.85;color:var(--text-2);max-width:40ch;margin-bottom:26px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.device-frame{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--neon-line);box-shadow:var(--shadow);
  background:var(--ink-700);
}
.device-frame img{width:100%;height:100%;object-fit:cover;border-radius:0;aspect-ratio:4/3.4}
.device-frame::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:36%;
  background:linear-gradient(180deg,transparent,rgba(10,15,14,.92));
}
.device-tag{
  position:absolute;left:18px;bottom:18px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:var(--r-pill);
  background:rgba(7,11,10,.82);border:1px solid var(--neon-line);
  font-size:13px;color:var(--text-2);
}
.device-tag b{color:var(--lime);font-variant-numeric:tabular-nums}
@media (max-width:991.98px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero{padding:32px 0 56px}
  .hero-sub{max-width:none}
}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0}
.section.tight{padding:56px 0}
.section.alt{background:var(--ink-800)}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head h2{
  position:relative;font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.35;padding-left:16px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--neon),var(--lime));
}
.sec-head p{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.85;max-width:62ch}
@media (max-width:767.98px){.section{padding:52px 0}.section.tight{padding:44px 0}}

/* ---------- 数据卡 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat-card{
  position:relative;background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--shadow);
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.stat-card:hover{border-color:var(--neon-line);transform:translateY(-4px)}
.stat-card::before{
  content:"";position:absolute;top:0;left:22px;right:22px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--neon),transparent);
}
.stat-k{font-size:13px;color:var(--text-3);letter-spacing:.04em;margin-bottom:10px}
.stat-v{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:var(--lime);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-d{margin-top:10px;font-size:13px;color:var(--text-2);line-height:1.7}
@media (max-width:991.98px){.stat-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575.98px){.stat-grid{grid-template-columns:1fr}}

/* ---------- 规格双栏 ---------- */
.spec-block{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start}
.spec-block.rev{grid-template-columns:7fr 5fr}
.spec-copy h3{font-size:21px;font-weight:600;margin-bottom:14px}
.spec-copy p{color:var(--text-2);font-size:16px;line-height:1.85}
.spec-copy .spec-img{margin-top:22px;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow)}
.spec-copy .spec-img img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.spec-list{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);padding:10px 24px;box-shadow:var(--shadow)}
.spec-list-title{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:18px 0 14px;border-bottom:1px solid var(--line);
  font-size:14px;color:var(--text-3);letter-spacing:.04em;
}
.spec-list-title span i{color:var(--neon);margin-right:6px}
.spec-row{display:flex;align-items:baseline;justify-content:space-between;gap:20px;padding:14px 0;border-bottom:1px dashed var(--line)}
.spec-row:last-child{border-bottom:0}
.spec-row .k{color:var(--text-2);font-size:15px;flex:0 0 auto}
.spec-row .v{
  color:var(--lime);font-size:16px;font-weight:600;font-variant-numeric:tabular-nums;
  text-align:right;letter-spacing:.01em;
}
.spec-row.mark{position:relative;padding-left:14px}
.spec-row.mark::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:var(--lime);
}
@media (max-width:991.98px){
  .spec-block,.spec-block.rev{grid-template-columns:1fr;gap:28px}
}

/* ---------- 对比表 ---------- */
.cmp-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:var(--ink-700);box-shadow:var(--shadow)}
.cmp-table{width:100%;min-width:680px;border-collapse:collapse}
.cmp-table thead th{
  padding:18px 22px;text-align:left;font-size:13px;font-weight:600;letter-spacing:.05em;
  color:var(--text-3);background:rgba(255,255,255,.02);border-bottom:1px solid var(--line);white-space:nowrap;
}
.cmp-table thead th:nth-child(3){color:var(--neon)}
.cmp-table tbody th,.cmp-table tbody td{
  padding:16px 22px;font-size:15px;text-align:left;border-bottom:1px solid var(--line);
  color:var(--text-2);vertical-align:top;
}
.cmp-table tbody th{color:var(--text);font-weight:600;white-space:nowrap}
.cmp-table tbody td .num{color:var(--lime);font-weight:600}
.cmp-table tbody tr:last-child th,.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr.hl{background:rgba(201,255,77,.06)}
.cmp-table tbody tr.hl th{position:relative;color:var(--text)}
.cmp-table tbody tr.hl th::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--lime)}
.cmp-note{margin-top:14px;font-size:13px;color:var(--text-3);line-height:1.7}

/* ---------- 提示条 ---------- */
.tip-bar{
  display:flex;gap:14px;align-items:flex-start;
  background:linear-gradient(90deg,rgba(30,224,180,.10),rgba(30,224,180,0));
  border:1px solid var(--neon-line);border-radius:var(--r-card);padding:20px 22px;margin-top:26px;
}
.tip-bar i{color:var(--neon);font-size:18px;line-height:1.7}
.tip-bar p{margin:0;color:var(--text-2);font-size:15px;line-height:1.8}
.tip-bar strong{color:var(--text)}

/* ---------- 三列要点 ---------- */
.pts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pt-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;
  box-shadow:var(--shadow);transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.pt-card:hover{border-color:var(--neon-line);transform:translateY(-4px);box-shadow:var(--shadow),var(--glow)}
.pt-ico{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--neon-line);background:rgba(30,224,180,.10);color:var(--neon);font-size:17px;margin-bottom:18px;
}
.pt-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.pt-card p{color:var(--text-2);font-size:15px;line-height:1.8;margin:0}
@media (max-width:991.98px){.pts-grid{grid-template-columns:1fr 1fr}}
@media (max-width:575.98px){.pts-grid{grid-template-columns:1fr}}

/* ---------- FAQ ---------- */
.faq .accordion-item{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;margin-bottom:12px;
}
.faq .accordion-item:last-child{margin-bottom:0}
.faq .accordion-button{
  position:relative;width:100%;background:transparent;color:var(--text);
  font-size:17px;font-weight:600;line-height:1.6;padding:20px 52px 20px 22px;box-shadow:none;
  border:0;text-align:left;
}
.faq .accordion-button::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--neon);opacity:0;transition:opacity .18s var(--ease);
}
.faq .accordion-button:not(.collapsed){color:var(--neon);background:rgba(30,224,180,.05)}
.faq .accordion-button:not(.collapsed)::before{opacity:1}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--neon);outline-offset:-2px}
.faq .accordion-button::after{
  content:"\2b";font-family:inherit;background-image:none;font-size:22px;font-weight:400;color:var(--text-3);
  width:auto;height:auto;position:absolute;right:22px;top:50%;transform:translateY(-50%);
  transition:transform .2s var(--ease),color .18s var(--ease);line-height:1;
}
.faq .accordion-button:not(.collapsed)::after{color:var(--neon);transform:translateY(-50%) rotate(45deg)}
.faq .accordion-body{color:var(--text-2);font-size:15.5px;line-height:1.85;padding:0 22px 22px}
.faq .accordion-body p:last-child{margin-bottom:0}

/* ---------- CTA / 下载 ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  background:var(--ink-800);border:1px solid var(--neon-line);border-radius:var(--r-card);
  padding:44px;box-shadow:var(--shadow);
}
.cta-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--neon),var(--lime),transparent);
}
.cta-grid{display:grid;grid-template-columns:8fr 4fr;gap:40px;align-items:center}
.cta-grid h2{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.35;margin-bottom:14px}
.cta-grid p{color:var(--text-2);font-size:16px;line-height:1.85;margin-bottom:22px}
.cta-note{margin-top:16px;font-size:13px;color:var(--text-3);line-height:1.7}
.qr-box{
  width:140px;height:140px;border-radius:var(--r-card);border:1px solid var(--neon-line);
  background:rgba(7,11,10,.85);position:relative;display:flex;align-items:center;justify-content:center;
  color:var(--text-3);font-size:13px;text-align:center;line-height:1.5;margin:0 auto;
}
.qr-box::before,.qr-box::after{
  content:"";position:absolute;width:16px;height:16px;border:2px solid var(--lime);
}
.qr-box::before{top:-1px;left:-1px;border-right:0;border-bottom:0;border-top-left-radius:var(--r-card)}
.qr-box::after{bottom:-1px;right:-1px;border-left:0;border-top:0;border-bottom-right-radius:var(--r-card)}
.qr-wrap{text-align:center}
.qr-wrap .qr-cap{margin-top:12px;font-size:13px;color:var(--text-3)}
@media (max-width:991.98px){
  .cta-grid{grid-template-columns:1fr;gap:28px}
  .cta-panel{padding:32px 22px}
}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--ink-950);border-top:1px solid var(--line);position:relative;padding:64px 0 0}
.site-foot::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--neon),var(--lime),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text);margin-bottom:14px}
.foot-desc{color:var(--text-2);font-size:14px;line-height:1.85;margin-bottom:18px;max-width:34ch}
.foot-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px}
.foot-list li{margin-bottom:12px}
.foot-list a,.foot-list span{color:var(--text-2);font-size:14px;line-height:1.7;display:inline-block;transition:color .18s var(--ease),transform .18s var(--ease)}
.foot-list a:hover{color:var(--neon);transform:translateX(2px)}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input{
  flex:1 1 180px;min-height:44px;padding:0 16px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text);font-size:14px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--neon-line);box-shadow:0 0 0 3px rgba(30,224,180,.14)}
.form-tip{margin-top:10px;font-size:13px;color:var(--ember);min-height:18px}
.form-tip.ok{color:var(--neon)}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding:20px 0 26px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
}
@media (max-width:991.98px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575.98px){.foot-grid{grid-template-columns:1fr}.site-foot{padding-top:48px}}

@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .stat-card:hover,.pt-card:hover,.btn-ember:hover,.btn-neon:hover,.btn-ghost:hover{transform:none}
}
section[id]{scroll-margin-top:86px}

/* roulang page: category5 */
:root{
  --ink-900:#0A0F0E;
  --ink-800:#101716;
  --ink-700:#16201E;
  --ink-950:#070B0A;
  --neon:#1EE0B4;
  --lime:#C9FF4D;
  --ember:#FF6A3D;
  --text-1:#E8F1EE;
  --text-2:#9AAEAA;
  --text-3:#647673;
  --line:rgba(255,255,255,.08);
  --line-neon:rgba(30,224,180,.35);
  --r-card:16px;
  --r-btn:14px;
  --r-img:12px;
  --shadow-card:0 10px 30px rgba(0,0,0,.35);
  --glow:0 0 24px rgba(30,224,180,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#1EE0B4;
  --bs-body-bg:#0A0F0E;
  --bs-body-color:#E8F1EE;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#1EE0B4;
  --bs-link-hover-color:#C9FF4D;
  --bs-font-sans-serif:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text-1);
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--neon);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--lime)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1440px){.wrap{max-width:1280px}}
.num{font-variant-numeric:tabular-nums}

/* ---------- 顶栏 ---------- */
.topbar{position:sticky;top:0;z-index:1040;background:rgba(10,15,14,.94);border-bottom:1px solid var(--line);transition:background .2s var(--ease)}
.topbar.is-scrolled{backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.topline{height:2px;background:linear-gradient(90deg,transparent,var(--neon),var(--lime),transparent)}
.bar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text-1);letter-spacing:-.01em;white-space:nowrap}
.brand:hover{color:#fff}
.brand-dot{width:10px;height:10px;border-radius:50%;background:var(--neon);box-shadow:0 0 16px rgba(30,224,180,.75);flex:none}
.main-nav{display:flex;align-items:center;gap:2px}
.drawer-brand{display:none}
.nav-link-x{position:relative;padding:10px 13px;font-size:15px;font-weight:500;color:var(--text-2);border-radius:10px;transition:color .18s var(--ease),background .18s var(--ease)}
.nav-link-x::after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;background:var(--neon);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease)}
.nav-link-x:hover{color:#fff}
.nav-link-x:hover::after{transform:scaleX(1)}
.nav-link-x.active{color:#fff;text-shadow:0 0 14px rgba(30,224,180,.55)}
.nav-link-x.active::after{transform:scaleX(1)}
.bar-actions{display:flex;align-items:center;gap:12px}
.burger{display:none;position:relative;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--ink-700);cursor:pointer}
.burger span{position:absolute;left:12px;right:12px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.burger span:nth-child(1){top:15px}
.burger span:nth-child(2){top:21px}
.burger span:nth-child(3){top:27px}
.burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-mask{position:fixed;inset:0;background:rgba(4,8,7,.6);opacity:0;visibility:hidden;transition:opacity .2s var(--ease);z-index:1045}
.nav-mask.show{opacity:1;visibility:visible}

/* ---------- 按钮 ---------- */
.btn-neon,.btn-ember,.btn-ghost,.btn-quiet{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease)}
.btn-mid{height:44px;padding:0 20px;font-size:14px;border-radius:12px}
.btn-neon{background:var(--neon);color:#04100D}
.btn-neon:hover{color:#04100D;transform:translateY(-2px);box-shadow:0 8px 26px rgba(30,224,180,.35)}
.btn-ember{background:var(--ember);color:#1A0700;border-radius:999px}
.btn-ember:hover{color:#1A0700;transform:translateY(-2px);box-shadow:0 10px 28px rgba(255,106,61,.35)}
.btn-ghost{background:transparent;color:var(--text-1);border-color:var(--line-neon)}
.btn-ghost:hover{color:#fff;border-color:var(--neon);box-shadow:var(--glow);transform:translateY(-2px)}
.btn-quiet{background:var(--ink-700);color:var(--text-2);border-color:var(--line)}
.btn-quiet:hover{color:#fff;border-color:var(--line-neon)}
.btn-neon:active,.btn-ember:active,.btn-ghost:active,.btn-quiet:active{transform:translateY(1px)}

/* ---------- 面包屑 ---------- */
.crumb-wrap{border-bottom:1px solid var(--line);background:var(--ink-800)}
.crumb-x{display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:14px 0;font-size:13.5px;color:var(--text-3);background:transparent}
.crumb-x .breadcrumb-item{color:var(--text-3)}
.crumb-x .breadcrumb-item+.breadcrumb-item::before{content:"/";color:var(--text-3);padding:0 8px}
.crumb-x a{color:var(--text-2)}
.crumb-x a:hover{color:var(--neon)}
.crumb-x .active{color:var(--text-1)}

/* ---------- Hero ---------- */
.hero-sec{position:relative;overflow:hidden;padding:76px 0 88px;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center}
.hero-sec::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,15,14,.88),rgba(10,15,14,.95) 62%,var(--ink-900))}
.hero-grid{position:relative;display:grid;grid-template-columns:1.25fr .95fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid var(--line-neon);background:rgba(30,224,180,.07);color:var(--neon);font-size:13px;font-weight:600;letter-spacing:.02em}
h1{font-size:clamp(28px,5.2vw,52px);font-weight:700;line-height:1.25;letter-spacing:-.01em;margin:20px 0 0}
h1 .hl{color:var(--neon)}
.lede{margin-top:20px;max-width:38em;font-size:17px;color:var(--text-2);line-height:1.85}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.trust-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.badge-x{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:var(--ink-700);font-size:13px;color:var(--text-2)}
.badge-x b{color:var(--lime);font-weight:600}
.hero-media{position:relative}
.media-frame{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-neon);box-shadow:var(--shadow-card),var(--glow)}
.media-frame img{width:100%;height:100%;object-fit:cover;border-radius:0}
.media-frame::after{content:"";position:absolute;inset:auto 0 0 0;height:38%;background:linear-gradient(180deg,transparent,rgba(10,15,14,.9))}
.media-tag{position:absolute;left:16px;bottom:16px;z-index:2;display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:rgba(10,15,14,.8);border:1px solid var(--line-neon);font-size:13px;color:var(--text-1)}

/* ---------- 通用板块 ---------- */
.sec{padding:96px 0}
.sec-alt{background:var(--ink-800)}
.sec-head{max-width:44em;margin-bottom:48px}
.sec-head h2{position:relative;font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.35;padding-left:16px}
.sec-head h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;background:var(--neon);box-shadow:0 0 14px rgba(30,224,180,.55)}
.sec-sub{margin-top:16px;color:var(--text-2);font-size:16px;line-height:1.85}

/* ---------- 步骤流 ---------- */
.steps{display:flex;flex-direction:column;gap:20px}
.step{display:grid;grid-template-columns:96px 1fr 320px;gap:32px;align-items:center;padding:32px;border-radius:var(--r-card);background:var(--ink-700);border:1px solid var(--line);box-shadow:var(--shadow-card);transition:transform .2s var(--ease),border-color .2s var(--ease)}
.step:hover{transform:translateY(-4px);border-color:var(--line-neon)}
.step-no{font-size:44px;font-weight:700;line-height:1;color:transparent;-webkit-text-stroke:1.5px var(--neon);font-variant-numeric:tabular-nums}
.step h3{font-size:21px;font-weight:600;margin-bottom:12px}
.step p{color:var(--text-2);font-size:16px}
.tick{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.tick li{position:relative;padding-left:24px;font-size:15px;color:var(--text-2)}
.tick li::before{content:"";position:absolute;left:0;top:.62em;width:9px;height:9px;border-radius:50%;border:2px solid var(--neon)}
.step-media img{width:100%;height:190px;object-fit:cover;border:1px solid var(--line);border-radius:var(--r-img)}

/* ---------- 安全清单 ---------- */
.safety-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.safety-card{padding:28px;border-radius:var(--r-card);background:var(--ink-700);border:1px solid var(--line);box-shadow:var(--shadow-card)}
.safety-card h3{font-size:19px;font-weight:600;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.dot-neon{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 12px rgba(201,255,77,.6);flex:none}
.safety-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px dashed var(--line);font-size:15px}
.safety-row:last-child{border-bottom:0}
.safety-row span:first-child{color:var(--text-2)}
.safety-row .val{color:var(--lime);font-weight:600;font-variant-numeric:tabular-nums;text-align:right}
.safety-row.hot{background:linear-gradient(90deg,rgba(255,106,61,.12),transparent);border-radius:10px;padding-left:12px;padding-right:12px;border-bottom-style:solid}

/* ---------- 场景条 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.scene-item{padding:26px 24px;border-radius:var(--r-card);background:var(--ink-700);border:1px solid var(--line);transition:transform .2s var(--ease),border-color .2s var(--ease)}
.scene-item:hover{transform:translateY(-4px);border-color:var(--line-neon)}
.scene-item .tag{display:inline-block;padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:600;color:var(--lime);background:rgba(201,255,77,.1);border:1px solid rgba(201,255,77,.25);margin-bottom:14px}
.scene-item h3{font-size:18px;font-weight:600;margin-bottom:10px}
.scene-item p{font-size:15px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-x{max-width:900px}
.faq-x .accordion-item{background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:14px;overflow:hidden}
.faq-x .accordion-button{position:relative;width:100%;padding:22px 24px 22px 30px;background:transparent;border:0;color:var(--text-1);font-size:17px;font-weight:600;line-height:1.6;text-align:left;box-shadow:none;transition:color .18s var(--ease)}
.faq-x .accordion-button::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:var(--neon);transform:scaleY(0);transform-origin:top;transition:transform .2s var(--ease)}
.faq-x .accordion-button:not(.collapsed){color:#fff}
.faq-x .accordion-button:not(.collapsed)::before{transform:scaleY(1)}
.faq-x .accordion-button::after{content:"";width:14px;height:14px;border-right:2px solid var(--text-2);border-bottom:2px solid var(--text-2);border-radius:2px;transform:rotate(45deg);transition:transform .22s var(--ease),border-color .18s var(--ease);background:none;margin-left:auto;flex:none}
.faq-x .accordion-button:not(.collapsed)::after{border-color:var(--neon);transform:rotate(225deg)}
.faq-x .accordion-button:focus{box-shadow:none;outline:2px solid var(--neon);outline-offset:-2px}
.faq-x .accordion-body{padding:0 24px 24px 30px;color:var(--text-2);font-size:16px;line-height:1.85}

/* ---------- CTA ---------- */
.cta-box{display:grid;grid-template-columns:1.5fr auto;gap:48px;align-items:center;padding:48px;border-radius:22px;background:linear-gradient(135deg,var(--ink-700),var(--ink-800));border:1px solid var(--line-neon);box-shadow:var(--shadow-card),var(--glow)}
.cta-box h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;margin-bottom:14px}
.cta-box p{color:var(--text-2);max-width:40em}
.cta-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.fine{margin-top:16px;font-size:13px;color:var(--text-3);line-height:1.7}
.qr{display:flex;flex-direction:column;align-items:center;gap:12px}
.qr-box{width:140px;height:140px;border-radius:16px;border:1px solid var(--line-neon);background:var(--ink-950);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.qr-box::before,.qr-box::after{content:"";position:absolute;width:22px;height:22px;border:2px solid var(--neon)}
.qr-box::before{top:10px;left:10px;border-right:0;border-bottom:0;border-radius:6px 0 0 0}
.qr-box::after{bottom:10px;right:10px;border-left:0;border-top:0;border-radius:0 0 6px 0}
.qr-box span{font-size:13px;color:var(--text-3);letter-spacing:.16em}
.qr small{font-size:13px;color:var(--text-3)}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--ink-950);border-top:1px solid var(--line-neon);padding:64px 0 28px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--text-1);margin-bottom:16px}
.foot-desc{font-size:14.5px;color:var(--text-2);line-height:1.8;max-width:32em}
.sub-form{display:flex;gap:10px;margin-top:22px;max-width:380px}
.sub-form input{flex:1;height:46px;padding:0 16px;border-radius:12px;background:var(--ink-800);border:1px solid var(--line);color:var(--text-1);font-size:14.5px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(30,224,180,.16)}
.form-tip{margin-top:10px;font-size:13px;min-height:20px;color:var(--text-3)}
.form-tip.is-err{color:var(--ember)}
.form-tip.is-ok{color:var(--neon)}
.foot-title{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:18px}
.foot-list{display:flex;flex-direction:column;gap:12px}
.foot-list a,.foot-list span{font-size:14px;color:var(--text-2)}
.foot-list a{display:inline-block;transition:color .18s var(--ease),transform .18s var(--ease)}
.foot-list a:hover{color:var(--neon);transform:translateX(2px)}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:48px;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .step{grid-template-columns:80px 1fr 260px;gap:24px}
  .step-media img{height:170px}
}
@media (max-width:991.98px){
  .burger{display:block}
  .bar-actions .btn-ember{display:none}
  .main-nav{position:fixed;top:0;right:0;height:100vh;width:min(320px,86vw);z-index:1050;flex-direction:column;align-items:stretch;gap:4px;padding:24px 20px 40px;background:var(--ink-800);border-left:1px solid var(--line-neon);transform:translateX(105%);transition:transform .24s var(--ease);overflow-y:auto}
  .main-nav.open{transform:translateX(0)}
  .drawer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:var(--text-1);padding-bottom:16px;margin-bottom:12px;border-bottom:1px solid var(--line)}
  .nav-link-x{padding:15px 12px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-link-x::after{display:none}
  .nav-link-x.active{color:#fff;background:rgba(30,224,180,.08);border-radius:10px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{order:2}
  .sec{padding:72px 0}
  .step{grid-template-columns:64px 1fr;gap:20px 20px;padding:26px}
  .step-media{grid-column:1 / -1}
  .step-media img{height:200px}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .cta-box{grid-template-columns:1fr;gap:32px;padding:36px}
  .qr{align-items:flex-start}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .sec{padding:56px 0}
  .sec-head{margin-bottom:32px}
  .wrap{padding:0 16px}
  .safety-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .step-no{font-size:36px}
  .step-media img{height:180px}
  .cta-btns .btn-neon,.cta-btns .btn-ember,.cta-btns .btn-ghost{width:100%}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column}
  .faq-x .accordion-button{padding:18px 18px 18px 24px;font-size:16px}
  .faq-x .accordion-body{padding:0 18px 20px 24px;font-size:15px}
}
@media (max-width:575.98px){
  .bar-inner{height:60px}
  .brand{font-size:15.5px}
  .hero-sec{padding:52px 0 64px}
  .cta-box{padding:26px 20px}
  .step{padding:22px 18px;grid-template-columns:1fr;gap:14px}
  .step-no{font-size:32px}
  .scene-item{padding:22px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}