/* roulang page: index */
:root{
  --bg-0:#060B12;
  --bg-1:#0B141F;
  --bg-2:#101D2B;
  --brand:#1FD7B0;
  --brand-hi:#25E7BF;
  --brand-deep:#0E9C88;
  --accent:#FF8A3C;
  --text-1:#EEF4FA;
  --text-2:#A9B8C8;
  --text-3:#6F8296;
  --line:rgba(140,180,220,.14);
  --glass-border:rgba(255,255,255,.08);
  --glass-bg:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --r-lg:20px;
  --r-md:18px;
  --r-sm:12px;
  --shadow-lg:0 12px 40px rgba(0,0,0,.45);
  --shadow-sm:0 6px 20px rgba(0,0,0,.28);
  --glow:0 8px 30px rgba(31,215,176,.22);
  --glow-hi:0 12px 36px rgba(31,215,176,.34);
  --ease:cubic-bezier(.4,0,.2,1);
  --tr:.25s var(--ease);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:var(--tr)}
a:hover{color:var(--brand-hi)}
h1,h2,h3,h4{color:var(--text-1);font-weight:700;line-height:1.25;letter-spacing:-.01em;margin:0}
h1{font-weight:800}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.mono{font-family:"JetBrains Mono",ui-monospace,Consolas,monospace}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media(min-width:1400px){.container{max-width:1280px}}
@media(max-width:575px){.container{padding:0 16px}}

/* ---------- 顶部信息条 ---------- */
.topbar{
  height:36px;
  background:rgba(255,255,255,.03);
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--text-2);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px;gap:16px}
.topbar-domain{display:flex;align-items:center;gap:8px;color:var(--text-2);white-space:nowrap}
.topbar-domain .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(31,215,176,.8);flex:none}
.topbar-tip{color:var(--text-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar-links{display:flex;align-items:center;gap:18px;white-space:nowrap}
.topbar-links a{color:var(--text-2);font-size:13px;display:inline-flex;align-items:center;gap:5px;line-height:36px}
.topbar-links a.primary{color:var(--brand);font-weight:600}
.topbar-links a:hover{color:var(--brand)}
.topbar-links a.primary i{transition:transform var(--tr)}
.topbar-links a.primary:hover i{transform:translateX(3px)}
@media(max-width:767px){.topbar-tip{display:none}}
@media(max-width:575px){.topbar-links a:not(.primary){display:none}}

/* ---------- 主导航 ---------- */
.site-nav{
  position:sticky;top:0;z-index:1030;
  height:68px;
  background:rgba(6,11,18,.92);
  border-bottom:1px solid transparent;
  transition:var(--tr);
}
.site-nav.scrolled{
  background:rgba(6,11,18,.86);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom-color:rgba(31,215,176,.22);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:800;font-size:16px;letter-spacing:-.01em}
.brand:hover{color:var(--text-1)}
.brand-mark{position:relative;width:26px;height:26px;flex:none;border-radius:8px;border:1px solid rgba(31,215,176,.5);display:inline-flex;align-items:center;justify-content:center}
.brand-mark i{position:absolute;width:2px;height:13px;background:var(--brand);border-radius:2px}
.brand-mark i:first-child{transform:translateX(-3px) rotate(20deg)}
.brand-mark i:last-child{transform:translateX(3px) rotate(-20deg)}
.brand-text{white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-menu .nav-link{
  position:relative;padding:8px 14px;color:var(--text-2);font-size:15px;border-radius:10px;
}
.nav-menu .nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.04)}
.nav-menu .nav-link.active{color:var(--brand);font-weight:600}
.nav-menu .nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:rgba(255,255,255,.03);cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);margin:3px auto;border-radius:2px;transition:var(--tr)}
@media(max-width:991px){
  .nav-menu{display:none}
  .nav-toggle{display:block}
  .nav-actions .btn-brand{display:none}
}
.nav-drawer{background:var(--bg-1)!important;width:280px!important;border-left:1px solid var(--line)!important;color:var(--text-2)}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.nav-drawer .offcanvas-title{color:var(--text-1);font-size:16px;font-weight:700}
.nav-drawer .offcanvas-body{padding:16px 20px 24px;display:flex;flex-direction:column;gap:4px}
.nav-drawer .drawer-link{
  display:block;padding:13px 12px;border-radius:12px;color:var(--text-2);font-size:15px;
  border:1px solid transparent;min-height:44px;
}
.nav-drawer .drawer-link:hover{background:rgba(255,255,255,.04);color:var(--text-1);border-color:var(--line)}
.nav-drawer .drawer-link.active{color:var(--brand);font-weight:600;background:rgba(31,215,176,.08);border-color:rgba(31,215,176,.24)}
.nav-drawer .btn-brand{width:100%;margin-top:14px}

/* ---------- 按钮 ---------- */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border:0;border-radius:var(--r-sm);
  background:var(--brand);color:#04140F;font-size:15px;font-weight:700;line-height:1;
  box-shadow:var(--glow);transition:var(--tr);cursor:pointer;
}
.btn-brand:hover{background:var(--brand-hi);color:#04140F;transform:translateY(-2px);box-shadow:var(--glow-hi)}
.btn-brand:active{transform:translateY(0)}
.btn-brand:focus-visible,.btn-ghost:focus-visible,.pill-btn:focus-visible,.link-arrow:focus-visible,.nav-toggle:focus-visible,.shot-ctrl:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;
}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.18);
  background:transparent;color:var(--text-1);font-size:15px;font-weight:600;transition:var(--tr);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--text-1);box-shadow:0 0 0 4px rgba(31,215,176,.08)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;min-height:44px}
.link-arrow i{transition:transform var(--tr)}
.link-arrow:hover i{transform:translateX(3px)}
.pill-btn{
  display:inline-flex;align-items:center;gap:9px;height:44px;padding:0 20px;border-radius:999px;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.03);color:var(--text-1);
  font-size:14px;font-weight:600;transition:var(--tr);
}
.pill-btn i{font-size:16px;color:var(--text-2);transition:var(--tr)}
.pill-btn:hover{border-color:var(--brand);color:var(--text-1);box-shadow:0 0 0 4px rgba(31,215,176,.08)}
.pill-btn:hover i{color:var(--brand)}
.pill-btn.primary{background:var(--brand);border-color:var(--brand);color:#04140F;box-shadow:var(--glow)}
.pill-btn.primary i{color:#04140F}
.pill-btn.primary:hover{background:var(--brand-hi);transform:translateY(-2px);box-shadow:var(--glow-hi)}

/* ---------- 徽章 / 标签 ---------- */
.badge-tag{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;
  background:rgba(31,215,176,.12);color:var(--brand);font-size:12px;font-weight:600;white-space:nowrap;
}
.badge-ver{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;
  background:rgba(255,138,60,.12);color:var(--accent);font-size:12px;font-weight:600;
  font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;white-space:nowrap;
}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.8vw,32px);position:relative;padding-left:16px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand);
}
.section-sub{margin-top:12px;color:var(--text-2);max-width:640px;font-size:15px}
@media(max-width:767px){
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:74px 0 88px;background:var(--bg-0)}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;opacity:.15;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,18,.6) 0%,rgba(6,11,18,.9) 60%,var(--bg-0) 100%);
}
.hero .container{position:relative;z-index:2}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:999px;
  background:rgba(31,215,176,.1);border:1px solid rgba(31,215,176,.24);color:var(--brand);
  font-size:13px;font-weight:600;margin-bottom:22px;
}
.hero h1{font-size:clamp(30px,4.2vw,46px);margin-bottom:20px;max-width:15em}
.hero-sub{font-size:17px;color:var(--text-2);max-width:33em;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px}
.hero-stats li{display:flex;flex-direction:column;gap:2px}
.stat-num{font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;font-size:20px;font-weight:600;color:var(--text-1)}
.stat-label{font-size:13px;color:var(--text-3)}
.hero-card{
  border-radius:var(--r-lg);padding:28px;
  background:var(--glass-bg);border:1px solid var(--glass-border);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-lg);
}
.hero-card h2{font-size:18px;margin-bottom:8px}
.hero-card p{font-size:14px;color:var(--text-2);margin-bottom:20px}
.qr-box{
  width:132px;height:132px;border-radius:14px;border:1px solid var(--line);
  background:
    repeating-linear-gradient(90deg,rgba(238,244,250,.16) 0 4px,transparent 4px 12px),
    repeating-linear-gradient(0deg,rgba(238,244,250,.16) 0 4px,transparent 4px 12px),
    rgba(255,255,255,.04);
  display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--text-3);
}
.platform-row{display:flex;flex-wrap:wrap;gap:16px;margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}
.platform-row span{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--text-2)}
.platform-row i{font-size:15px;color:var(--brand)}
.field-lines{position:absolute;right:4%;bottom:0;z-index:1;pointer-events:none;opacity:.5}
.field-lines i{display:block;width:190px;height:1px;background:linear-gradient(90deg,transparent,rgba(31,215,176,.75));margin-bottom:12px;transform:rotate(-24deg)}
@media(max-width:991px){
  .hero{padding:52px 0 64px}
  .field-lines{display:none}
  .hero h1{max-width:none}
}

/* ---------- 价值区 ---------- */
.value-row{align-items:center}
.value-list{display:flex;flex-direction:column;gap:8px}
.value-item{
  display:flex;gap:16px;padding:18px;border-radius:var(--r-md);border:1px solid transparent;
  cursor:pointer;transition:var(--tr);
}
.value-item:hover,.value-item.active{
  border-color:rgba(31,215,176,.35);background:var(--bg-2);
}
.value-no{
  font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;font-size:14px;font-weight:600;
  color:var(--brand);padding-top:3px;flex:none;
}
.value-item h3{font-size:17px;margin-bottom:6px}
.value-item p{font-size:14px;color:var(--text-2);line-height:1.75}
.value-visual{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--glass-border);
  box-shadow:var(--shadow-lg);aspect-ratio:16/10;background:var(--bg-2);
}
.value-visual img{width:100%;height:100%;object-fit:cover;transition:var(--tr)}
.value-visual:hover img{transform:scale(1.03)}
@media(max-width:991px){.value-visual{margin-top:24px}}

/* ---------- 截图轮播 ---------- */
.shot-carousel{position:relative;padding:0 60px}
.carousel-inner{
  border-radius:var(--r-lg);padding:16px;
  background:var(--glass-bg);border:1px solid var(--glass-border);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-lg);
}
.shot{position:relative;margin:0;border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/10;background:var(--bg-2)}
.shot img{width:100%;height:100%;object-fit:cover}
.shot::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(6,11,18,.55) 100%)}
.shot-ver{
  position:absolute;right:14px;bottom:14px;z-index:2;
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:rgba(6,11,18,.72);border:1px solid var(--glass-border);color:var(--text-2);
  font-size:12px;font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;
}
.shot-ctrl{
  position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  background:rgba(16,29,43,.86);color:var(--text-1);display:flex;align-items:center;justify-content:center;
  transition:var(--tr);cursor:pointer;
}
.shot-ctrl:hover{border-color:var(--brand);color:var(--brand);box-shadow:0 0 0 4px rgba(31,215,176,.1)}
.shot-ctrl.prev{left:0}
.shot-ctrl.next{right:0}
.carousel-indicators{position:static;margin:20px 0 0;display:flex;justify-content:center;gap:8px}
.carousel-indicators [data-bs-target]{
  width:28px;height:5px;border-radius:999px;background:rgba(140,180,220,.25);
  border:0;opacity:1;margin:0;text-indent:-9999px;overflow:hidden;transition:var(--tr);
}
.carousel-indicators .active{background:var(--brand);width:42px;box-shadow:0 0 12px rgba(31,215,176,.6)}
@media(max-width:767px){
  .shot-carousel{padding:0}
  .shot-ctrl{display:none}
}

/* ---------- 系统要求 ---------- */
.section-spec{padding-bottom:40px}
.spec-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;height:100%;
}
.spec-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.spec-card-head h3{font-size:18px}
.spec-list li{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;
}
.spec-list li:last-child{border-bottom:0}
.spec-key{color:var(--text-3);font-size:13px}
.spec-val{font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;color:var(--text-1);font-size:13px;text-align:right}

/* ---------- 下载横幅 ---------- */
.section-download{padding-top:40px}
.dl-banner{
  border-radius:var(--r-lg);padding:32px;
  background:var(--glass-bg);border:1px solid var(--glass-border);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 12px 40px rgba(0,0,0,.45),0 0 60px rgba(31,215,176,.08);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.dl-lead h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:10px}
.dl-lead p{font-size:14px;color:var(--text-3);font-family:"JetBrains Mono",ui-monospace,Consolas,monospace}
.dl-right{display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.dl-pills{display:flex;gap:12px;flex-wrap:wrap}
.dl-qr{
  width:120px;height:120px;border-radius:14px;border:1px solid var(--line);flex:none;
  background:
    repeating-linear-gradient(90deg,rgba(238,244,250,.14) 0 4px,transparent 4px 12px),
    repeating-linear-gradient(0deg,rgba(238,244,250,.14) 0 4px,transparent 4px 12px),
    rgba(255,255,255,.04);
  display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--text-3);text-align:center;padding:8px;
}
@media(max-width:991px){
  .dl-banner{padding:24px}
  .dl-right{width:100%;justify-content:flex-start}
}
@media(max-width:575px){
  .dl-pills{width:100%}
  .dl-pills .pill-btn{width:calc(50% - 6px);justify-content:center}
  .dl-qr{display:none}
}

/* ---------- 评价墙 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-col{display:flex;flex-direction:column;gap:22px}
.review-col:nth-child(2){margin-top:32px}
.review-card{
  border-radius:var(--r-md);padding:24px;
  background:var(--glass-bg);border:1px solid var(--glass-border);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-sm);transition:var(--tr);
}
.review-card:hover{transform:translateY(-4px);border-color:rgba(31,215,176,.35);box-shadow:var(--shadow-lg)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:none;border:1px solid var(--line);
  background:linear-gradient(140deg,rgba(31,215,176,.28),rgba(140,180,220,.12));
}
.review-name{color:var(--text-1);font-size:14px;font-weight:600}
.stars{color:var(--accent);font-size:12px;letter-spacing:2px;margin-top:2px}
.review-card p{font-size:14px;color:var(--text-2);line-height:1.8}
.review-src{display:inline-flex;margin-top:14px;font-size:12px;color:var(--text-3)}
@media(max-width:991px){
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .review-col:nth-child(2){margin-top:0}
}
@media(max-width:767px){.review-grid{grid-template-columns:1fr}}

/* ---------- 最新信息 ---------- */
.news-list{display:grid;grid-template-columns:1.05fr .95fr;gap:20px;align-items:stretch}
.news-item{border-radius:var(--r-md);overflow:hidden}
.news-link{
  display:flex;gap:16px;height:100%;padding:18px;border-radius:var(--r-md);
  background:var(--bg-2);border:1px solid var(--line);color:var(--text-2);
  transition:var(--tr);
}
.news-link:hover{transform:translateY(-4px);border-color:rgba(31,215,176,.35);box-shadow:var(--shadow-lg);color:var(--text-2)}
.news-thumb{
  flex:none;width:150px;border-radius:12px;overflow:hidden;aspect-ratio:3/2;background:var(--bg-1);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:var(--tr)}
.news-link:hover .news-thumb img{transform:scale(1.03)}
.news-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.news-cat{display:inline-flex;align-self:flex-start;height:24px;align-items:center;padding:0 11px;border-radius:999px;background:rgba(31,215,176,.12);color:var(--brand);font-size:12px;font-weight:600}
.news-title{font-size:16px;line-height:1.5}
.news-summary{font-size:13px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-time{font-size:13px;color:var(--text-3);font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;margin-top:auto}
.news-item.featured{grid-row:span 3}
.news-item.featured .news-link{flex-direction:column;padding:22px}
.news-item.featured .news-thumb{width:100%;aspect-ratio:16/10}
.news-item.featured .news-title{font-size:20px}
.news-item.featured .news-summary{font-size:14px;-webkit-line-clamp:3}
.news-empty{
  border-radius:var(--r-lg);border:1px dashed var(--line);background:var(--bg-1);
  padding:56px 24px;text-align:center;
}
.news-empty i{font-size:28px;color:var(--brand);opacity:.8}
.news-empty p{margin:14px 0 20px;color:var(--text-3);font-size:14px}
@media(max-width:991px){
  .news-list{grid-template-columns:1fr}
  .news-item.featured{grid-row:auto}
}
@media(max-width:575px){
  .news-link{flex-direction:column;padding:16px}
  .news-thumb{width:100%;aspect-ratio:16/10}
}

/* ---------- FAQ ---------- */
.faq-wrap{
  border-radius:var(--r-lg);padding:8px 28px;
  background:var(--glass-bg);border:1px solid var(--glass-border);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-lg);
}
.faq-item{border-bottom:1px solid var(--line);position:relative}
.faq-item:last-child{border-bottom:0}
.faq-item::before{
  content:"";position:absolute;left:-28px;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--brand);opacity:0;transition:var(--tr);
}
.faq-item.open::before,.faq-item:has(.faq-btn[aria-expanded="true"])::before{opacity:1}
.faq-btn{
  width:100%;background:none;border:0;text-align:left;padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  color:var(--text-1);font-size:16px;font-weight:600;cursor:pointer;min-height:44px;transition:var(--tr);
}
.faq-btn:hover{color:var(--brand)}
.faq-btn i{color:var(--text-3);font-size:14px;transition:transform var(--tr);flex:none}
.faq-btn[aria-expanded="true"] i{transform:rotate(180deg);color:var(--brand)}
.faq-body{padding:0 0 20px;font-size:14px;color:var(--text-2);line-height:1.85;max-width:56em}
@media(max-width:575px){.faq-wrap{padding:8px 18px}.faq-item::before{left:-18px}}

/* ---------- CTA 条 ---------- */
.cta-strip{
  border-radius:var(--r-lg);padding:44px;text-align:center;
  background:linear-gradient(140deg,rgba(31,215,176,.1),rgba(255,255,255,.02));
  border:1px solid rgba(31,215,176,.2);
}
.cta-strip h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px}
.cta-strip p{max-width:620px;margin:0 auto 26px;font-size:15px}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#040910;border-top:1px solid var(--line);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-3);max-width:26em;line-height:1.8}
.footer-col h3{font-size:15px;color:var(--text-1);margin-bottom:18px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{color:var(--text-3);font-size:14px;display:inline-block;min-height:24px}
.footer-col a:hover{color:var(--brand);text-decoration:underline}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .fb-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand)}
@media(max-width:991px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:575px){
  .site-footer{padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: article */
:root{
  --bg-0:#060B12;
  --bg-1:#0B141F;
  --bg-2:#101D2B;
  --brand:#1FD7B0;
  --brand-lite:#5BF0D2;
  --brand-deep:#0E9C88;
  --accent:#FF8A3C;
  --text-1:#EEF4FA;
  --text-2:#A9B8C8;
  --text-3:#6F8296;
  --line:rgba(140,180,220,.14);
  --glass-border:rgba(255,255,255,.08);
  --glass-bg:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --radius-lg:20px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-card:0 12px 40px rgba(0,0,0,.45);
  --glow:0 8px 30px rgba(31,215,176,.22);
  --glow-hover:0 12px 36px rgba(31,215,176,.34);
  --ease:.25s cubic-bezier(.4,0,.2,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  background-image:radial-gradient(900px 500px at 82% -8%,rgba(31,215,176,.10),transparent 62%),
                   radial-gradient(700px 420px at 4% 12%,rgba(255,138,60,.05),transparent 66%);
  background-repeat:no-repeat;
}
h1,h2,h3,h4,h5{color:var(--text-1);font-weight:700;line-height:1.25;letter-spacing:-.01em;margin:0;}
p{margin:0 0 18px;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease);}
a:hover{color:var(--brand-lite);}
img{max-width:100%;height:auto;display:block;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
ul,ol{padding-left:20px;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ============ 顶部信息条 ============ */
.topbar{height:36px;background:rgba(255,255,255,.03);border-bottom:1px solid var(--line);font-size:13px;color:var(--text-2);}
.topbar .container{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.tb-left{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);letter-spacing:.02em;}
.tb-dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(31,215,176,.85);}
.tb-mid{color:var(--text-3);}
.tb-right{display:inline-flex;align-items:center;gap:18px;}
.tb-right a{display:inline-flex;align-items:center;gap:6px;color:var(--brand);}
.tb-right a .arw{transition:transform var(--ease);}
.tb-right a:hover{color:var(--brand-lite);}
.tb-right a:hover .arw{transform:translateX(3px);}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(6,11,18,.72);border-bottom:1px solid transparent;transition:background var(--ease),border-color var(--ease),backdrop-filter var(--ease);}
.site-header.scrolled{background:rgba(6,11,18,.86);backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);border-bottom-color:rgba(31,215,176,.22);}
.header-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{position:relative;width:26px;height:26px;flex:0 0 26px;}
.brand-mark i{position:absolute;left:4px;width:17px;height:2px;border-radius:2px;background:var(--brand);}
.brand-mark i:first-child{top:9px;transform:rotate(32deg);}
.brand-mark i:last-child{top:16px;transform:rotate(-32deg);}
.brand-text{color:var(--text-1);font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-link{position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;color:var(--text-2);font-size:15px;}
.nav-link::after{content:"";position:absolute;left:12px;bottom:8px;width:0;height:2px;border-radius:2px;background:var(--brand);transition:width var(--ease);}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after,.nav-link.active::after{width:18px;}
.nav-link.active{color:var(--brand);}
.header-actions{display:flex;align-items:center;gap:12px;}

.btn-primary-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border:0;border-radius:12px;
  background:var(--brand);color:#04140F;font-size:15px;font-weight:700;
  box-shadow:var(--glow);cursor:pointer;transition:all var(--ease);
}
.btn-primary-glow:hover{background:#38E4C2;color:#04140F;transform:translateY(-2px);box-shadow:var(--glow-hover);}
.btn-primary-glow:active{transform:translateY(0);box-shadow:var(--glow);}
.btn-outline-n{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:12px;border:1px solid rgba(255,255,255,.18);
  background:transparent;color:var(--text-1);font-size:15px;font-weight:600;
  cursor:pointer;transition:all var(--ease);
}
.btn-outline-n:hover{border-color:var(--brand);color:var(--brand);box-shadow:0 8px 24px rgba(31,215,176,.16);transform:translateY(-2px);}
.btn-outline-n:active{transform:translateY(0);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;}
.btn-text .arw{transition:transform var(--ease);}
.btn-text:hover{color:var(--brand-lite);}
.btn-text:hover .arw{transform:translateX(3px);}
.hamburger{display:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:44px;height:44px;border-radius:12px;border:1px solid var(--glass-border);background:rgba(255,255,255,.03);cursor:pointer;transition:border-color var(--ease);}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);}
.hamburger:hover{border-color:rgba(31,215,176,.35);}

/* 移动抽屉 */
.mobile-drawer{width:280px !important;background:var(--bg-1) !important;color:var(--text-1);border-left:1px solid var(--line) !important;}
.mobile-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.mobile-drawer .offcanvas-title{font-size:16px;color:var(--text-1);}
.mobile-drawer .offcanvas-body{padding:12px 20px 24px;}
.drawer-link{display:block;padding:14px 4px;border-bottom:1px solid var(--line);color:var(--text-2);font-size:16px;}
.drawer-link:hover,.drawer-link.active{color:var(--brand);}
.drawer-cta{margin-top:22px;}
.drawer-cta .btn-primary-glow{width:100%;}

/* ============ 文章头部 ============ */
.article-hero{position:relative;overflow:hidden;padding:44px 0 34px;border-bottom:1px solid var(--line);}
.article-hero::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;opacity:.14;}
.article-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,18,.35) 0%,rgba(6,11,18,.94) 76%,var(--bg-0) 100%);}
.article-hero .container{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--text-3);opacity:.7;}
.crumb .cur{color:var(--text-3);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{font-size:clamp(26px,3.4vw,40px);max-width:900px;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:18px;font-size:13px;color:var(--text-3);}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px;}
.tag-pill{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;font-size:12px;background:rgba(31,215,176,.12);color:var(--brand);}
.hero-rule{margin-top:26px;height:1px;background:var(--line);}

/* ============ 正文主体 ============ */
.article-main{padding:52px 0 96px;}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:40px;align-items:start;}
.article-body{color:#D8E2EC;font-size:16px;line-height:1.9;min-width:0;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 18px;color:#D8E2EC;}
.article-body h2{position:relative;font-size:24px;margin:40px 0 16px;padding-left:14px;color:var(--text-1);}
.article-body h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:2px;background:var(--brand);}
.article-body h3{font-size:20px;margin:32px 0 12px;color:var(--text-1);}
.article-body h4{font-size:17px;margin:24px 0 10px;color:var(--text-1);}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;}
.article-body li{margin-bottom:8px;line-height:1.9;}
.article-body li::marker{color:var(--brand);}
.article-body blockquote{margin:24px 0;padding:20px;background:rgba(31,215,176,.06);border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:var(--text-2);}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:24px auto 10px;width:100%;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:4px;}
.article-body code{font-family:var(--font-mono);font-size:14px;background:var(--bg-1);border:1px solid var(--line);border-radius:6px;padding:2px 6px;color:var(--brand);}
.article-body pre{background:var(--bg-1);border:1px solid var(--line);border-radius:12px;padding:16px 18px;overflow-x:auto;margin:0 0 20px;}
.article-body pre code{background:transparent;border:0;padding:0;color:#CFE3EC;}
.article-body a{color:var(--brand);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-lite);}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:14px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--bg-1);color:var(--text-1);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
.empty-article{display:flex;flex-direction:column;align-items:center;gap:14px;padding:64px 24px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-md);text-align:center;}
.empty-article i{font-size:30px;color:var(--brand);}
.empty-article p{margin:0;color:var(--text-2);font-size:16px;}

/* 文章尾部 */
.article-foot{margin-top:48px;padding-top:28px;border-top:1px solid var(--line);}
.foot-label{font-size:13px;color:var(--text-3);margin-bottom:12px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag-plain{display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;border:1px solid var(--line);color:var(--text-2);font-size:13px;background:rgba(255,255,255,.02);}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px;}
.pager-card{display:block;padding:20px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-md);transition:all var(--ease);}
.pager-card:hover{border-color:rgba(31,215,176,.35);transform:translateY(-4px);box-shadow:var(--shadow-card);}
.pager-card .pager-hint{font-size:12px;color:var(--text-3);display:flex;align-items:center;gap:6px;}
.pager-card .pager-title{display:block;margin-top:8px;color:var(--text-1);font-size:16px;font-weight:600;line-height:1.5;}
.pager-card.right{text-align:right;}
.pager-card.right .pager-hint{justify-content:flex-end;}

/* 侧栏 */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-md);padding:22px;}
.side-card h3{font-size:15px;color:var(--text-1);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--brand);}
.side-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px;}
.side-list a{display:flex;align-items:flex-start;gap:8px;color:var(--text-2);font-size:14px;line-height:1.6;}
.side-list a:hover{color:var(--brand);}
.side-list a i{color:var(--brand);font-size:12px;margin-top:6px;}
.side-card.glass{background:var(--glass-bg);border:1px solid var(--glass-border);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--shadow-card);}
.side-card .side-note{font-size:13px;color:var(--text-3);line-height:1.75;margin:0;}
.side-card .btn-outline-n{width:100%;margin-top:16px;height:44px;}

/* CTA 区块 */
.cta-band{padding:0 0 96px;}
.cta-inner{
  position:relative;overflow:hidden;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:center;
  padding:36px 40px;border-radius:var(--radius-lg);
  background:var(--glass-bg);border:1px solid var(--glass-border);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card),0 0 60px rgba(31,215,176,.08);
}
.cta-inner::after{content:"";position:absolute;right:-60px;bottom:-80px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(31,215,176,.16),transparent 68%);}
.cta-inner h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:10px;}
.cta-inner p{margin:0;color:var(--text-2);max-width:660px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2;}

/* 页脚 */
.site-footer{background:#04080D;border-top:1px solid var(--line);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:360px;margin:0;}
.footer-col h3{font-size:15px;color:var(--text-1);margin-bottom:16px;font-weight:600;}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:var(--text-2);font-size:14px;}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{margin-top:48px;padding:20px 0;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--text-3);}
.fb-links{display:inline-flex;flex-wrap:wrap;gap:18px;}
.fb-links a{color:var(--text-3);}
.fb-links a:hover{color:var(--brand);}

/* 响应式 */
@media (max-width:1199px){
  .article-grid{grid-template-columns:minmax(0,1fr) 260px;gap:32px;}
}
@media (max-width:991px){
  .nav-menu{display:none;}
  .hamburger{display:flex;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .article-side{position:static;}
  .article-main{padding:44px 0 72px;}
  .cta-inner{grid-template-columns:1fr;padding:30px 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:768px){
  .tb-mid{display:none;}
  .article-hero{padding:32px 0 26px;}
  .article-title{font-size:clamp(23px,6vw,32px);}
  .article-body h2{font-size:22px;margin-top:34px;}
  .article-body h3{font-size:18px;}
  .pager{grid-template-columns:1fr;}
  .pager-card.right{text-align:left;}
  .pager-card.right .pager-hint{justify-content:flex-start;}
  .article-foot{margin-top:36px;}
  .cta-band{padding-bottom:72px;}
}
@media (max-width:576px){
  .container{padding:0 16px;}
  body{font-size:15px;}
  .brand-text{font-size:15px;}
  .nav-link{font-size:14px;}
  .topbar .container{gap:10px;}
  .tb-right{gap:12px;}
  .article-body{font-size:15px;line-height:1.85;}
  .article-body p{font-size:15px;}
  .side-card{padding:18px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .cta-inner{padding:24px 18px;}
  .cta-actions .btn-primary-glow,.cta-actions .btn-outline-n{width:100%;}
}

/* roulang page: category2 */
:root{
  --bg-0:#060B12;
  --bg-1:#0B141F;
  --bg-2:#101D2B;
  --brand:#1FD7B0;
  --brand-deep:#0E9C88;
  --accent:#FF8A3C;
  --text-1:#EEF4FA;
  --text-2:#A9B8C8;
  --text-3:#6F8296;
  --line:rgba(140,180,220,0.14);
  --line-soft:rgba(255,255,255,0.08);
  --glass-a:rgba(255,255,255,0.07);
  --glass-b:rgba(255,255,255,0.02);
  --r-block:20px;
  --r-card:18px;
  --r-sm:12px;
  --shadow-card:0 12px 40px rgba(0,0,0,0.45);
  --shadow-glow:0 8px 30px rgba(31,215,176,0.22);
  --shadow-glow-hi:0 12px 36px rgba(31,215,176,0.34);
  --t:0.25s cubic-bezier(.4,0,.2,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
  --gap-section:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--t),opacity var(--t);}
a:hover{color:#4BE8C6;text-decoration:underline;text-underline-offset:3px;}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--text-1);font-weight:700;letter-spacing:-0.01em;line-height:1.25;margin:0;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1400px){
  .container{max-width:1280px;}
}

/* ============ 顶部信息条 ============ */
.topbar{
  background:rgba(255,255,255,0.03);
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--text-2);
  height:36px;
}
.topbar .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:36px;
}
.topbar-domain{display:flex;align-items:center;gap:8px;font-family:var(--font-mono);letter-spacing:0.02em;}
.topbar-domain .dot{
  width:6px;height:6px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 10px rgba(31,215,176,0.8);flex:none;
}
.topbar-note{color:var(--text-3);}
.topbar-links{display:flex;align-items:center;gap:20px;}
.topbar-links a{color:var(--text-2);}
.topbar-links a.primary{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.topbar-links a.primary::after{content:"";width:6px;height:6px;border-top:1.5px solid var(--brand);border-right:1.5px solid var(--brand);transform:rotate(45deg);transition:transform var(--t);}
.topbar-links a.primary:hover::after{transform:rotate(45deg) translate(2px,-2px);}
.topbar-links a:hover{text-decoration:none;color:var(--text-1);}
@media (max-width:767.98px){
  .topbar-note{display:none;}
  .topbar-links a:not(.primary){display:none;}
}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(6,11,18,0.72);
  border-bottom:1px solid transparent;
  transition:background var(--t),backdrop-filter var(--t),border-color var(--t);
}
.site-header.is-stuck{
  background:rgba(6,11,18,0.86);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid rgba(31,215,176,0.16);
}
.nav-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text-1);
  font-weight:800;
  font-size:17px;
  letter-spacing:-0.01em;
  flex:none;
}
.brand:hover{color:var(--text-1);text-decoration:none;}
.brand-mark{
  width:26px;height:26px;position:relative;display:inline-block;flex:none;
  border-radius:8px;
  background:linear-gradient(160deg,rgba(31,215,176,0.18),rgba(31,215,176,0.02));
  border:1px solid rgba(31,215,176,0.4);
}
.brand-mark i{
  position:absolute;left:6px;top:5px;width:2px;height:16px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  border-radius:2px;
}
.brand-mark i:nth-child(1){transform:rotate(18deg);}
.brand-mark i:nth-child(2){left:14px;transform:rotate(-18deg);}
.brand-text{white-space:nowrap;}
.nav-menu{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1 1 auto;
  justify-content:center;
}
.nav-link{
  position:relative;
  color:var(--text-2);
  font-size:15px;
  padding:10px 14px;
  border-radius:10px;
  white-space:nowrap;
  transition:color var(--t),background var(--t);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,0.04);text-decoration:none;}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:50%;bottom:2px;
  transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 10px rgba(31,215,176,0.7);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line-soft);
  border-radius:var(--r-sm);
  background:transparent;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;}

/* 按钮 */
.btn-h{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 26px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
  white-space:nowrap;
}
.btn-h:hover{text-decoration:none;transform:translateY(-2px);}
.btn-h:active{transform:translateY(0);}
.btn-primary-h{
  background:var(--brand);
  color:#04140F;
  box-shadow:var(--shadow-glow);
}
.btn-primary-h:hover{background:#3BE3C2;color:#04140F;box-shadow:var(--shadow-glow-hi);}
.btn-ghost-h{
  background:transparent;
  border-color:rgba(255,255,255,0.18);
  color:var(--text-1);
}
.btn-ghost-h:hover{border-color:var(--brand);color:var(--text-1);box-shadow:0 0 0 4px rgba(31,215,176,0.08);}
.btn-sm-h{height:40px;padding:0 18px;font-size:14px;}
.btn-text-h{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:15px;font-weight:600;
  background:none;border:0;padding:0;
}
.btn-text-h::after{
  content:"";
  width:7px;height:7px;
  border-top:2px solid var(--brand);
  border-right:2px solid var(--brand);
  transform:rotate(45deg);
  transition:transform var(--t);
}
.btn-text-h:hover{text-decoration:none;color:#4BE8C6;}
.btn-text-h:hover::after{transform:rotate(45deg) translate(3px,-3px);}

/* 移动抽屉 */
.drawer{
  --bs-offcanvas-width:280px;
  background:var(--bg-1);
  border-left:1px solid var(--line);
  color:var(--text-2);
}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.drawer .btn-close{filter:invert(1) grayscale(1) brightness(2);opacity:.7;}
.drawer-body{padding:14px 14px 24px;display:flex;flex-direction:column;gap:4px;}
.drawer-body .nav-link{display:block;padding:14px 16px;font-size:16px;border-radius:var(--r-sm);}
.drawer-body .nav-link.active{background:rgba(31,215,176,0.08);}
.drawer-body .nav-link.active::after{left:16px;transform:none;bottom:10px;}
.drawer-cta{margin-top:14px;width:100%;}

/* ============ 面包屑 ============ */
.crumb{
  padding:22px 0 0;
  font-size:13px;
  color:var(--text-3);
}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{
  content:"";
  width:5px;height:5px;
  border-top:1px solid var(--text-3);
  border-right:1px solid var(--text-3);
  transform:rotate(45deg);
  opacity:.7;
}
.crumb a{color:var(--text-2);font-weight:500;}
.crumb .current{color:var(--text-3);}

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  padding:56px 0 72px;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:0.14;
}
.hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,18,0.45) 0%,rgba(6,11,18,0.88) 62%,var(--bg-0) 100%);
}
.hero-lines{
  position:absolute;
  right:6%;bottom:36px;
  width:150px;height:70px;
  opacity:.55;
  pointer-events:none;
}
.hero-lines span{
  display:block;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--brand));
  margin-bottom:12px;
  transform:rotate(-24deg);
  transform-origin:right center;
}
.hero-lines span:nth-child(1){width:150px;}
.hero-lines span:nth-child(2){width:112px;margin-left:38px;}
.hero-lines span:nth-child(3){width:74px;margin-left:76px;}
.hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(31,215,176,0.12);
  color:var(--brand);
  font-size:12px;
  font-weight:600;
  letter-spacing:0.04em;
  margin-bottom:20px;
}
.hero h1{
  font-size:clamp(30px,4.2vw,46px);
  font-weight:800;
  margin-bottom:20px;
}
.hero-sub{
  font-size:17px;
  line-height:1.85;
  color:var(--text-2);
  max-width:620px;
  margin-bottom:30px;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:12px 40px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-stat b{
  display:block;
  font-family:var(--font-mono);
  font-size:20px;
  color:var(--text-1);
  font-weight:600;
  letter-spacing:0.01em;
}
.hero-stat span{font-size:13px;color:var(--text-3);}

.glass-card{
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line-soft);
  border-radius:var(--r-block);
  box-shadow:var(--shadow-card);
  padding:24px;
}
.hero-card-media{
  border-radius:var(--r-sm);
  overflow:hidden;
  position:relative;
  aspect-ratio:16/10;
  border:1px solid var(--line);
}
.hero-card-media img{width:100%;height:100%;object-fit:cover;}
.hero-card-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(6,11,18,0.7) 100%);
}
.hero-card-media .tag-ver{
  position:absolute;right:12px;bottom:12px;
  z-index:2;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--accent);
  background:rgba(255,138,60,0.12);
  border-radius:999px;
  padding:2px 10px;
  height:24px;
  display:inline-flex;
  align-items:center;
}
.hero-card-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.hero-card-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  line-height:1.7;
  color:var(--text-2);
}
.hero-card-list li i{
  flex:none;
  width:16px;height:16px;
  margin-top:5px;
  border-radius:5px;
  border:1px solid rgba(31,215,176,0.55);
  position:relative;
}
.hero-card-list li i::after{
  content:"";
  position:absolute;left:4px;top:3px;
  width:4px;height:8px;
  border-right:1.5px solid var(--brand);
  border-bottom:1.5px solid var(--brand);
  transform:rotate(45deg);
}
.platform-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:18px;
  padding-top:18px;
  border-top:1px solid var(--line);
}
.platform-row span{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--text-2);
  border:1px solid var(--line-soft);
  border-radius:999px;
  padding:3px 12px;
}

/* ============ 通用板块 ============ */
.section{padding:var(--gap-section) 0;}
.section-tight{padding-top:40px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-head h2{
  font-size:clamp(24px,2.8vw,32px);
  position:relative;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:26px;
  border-radius:3px;
  background:var(--brand);
}
.section-head p{
  margin:12px 0 0 16px;
  font-size:15px;
  color:var(--text-3);
  max-width:620px;
}
.section-head .head-right{flex:none;padding-bottom:6px;}

/* ============ 对照区 ============ */
.compare-wrap{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-block);
  overflow:hidden;
}
.compare-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
}
.compare-col{
  padding:32px;
  border-right:1px solid var(--line);
}
.compare-col:last-child{border-right:0;}
.compare-col.active{
  background:linear-gradient(180deg,rgba(31,215,176,0.06),rgba(31,215,176,0));
}
.compare-head{
  padding-bottom:18px;
  margin-bottom:6px;
  border-bottom:1px solid var(--line);
}
.compare-head .code{
  display:block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:0.12em;
  color:var(--brand);
  margin-bottom:8px;
}
.compare-head h3{font-size:20px;margin-bottom:6px;}
.compare-head p{font-size:13px;color:var(--text-3);margin:0;}
.compare-row{
  padding:14px 0;
  border-bottom:1px solid var(--line);
}
.compare-row:last-child{border-bottom:0;}
.compare-row dt{
  font-size:13px;
  color:var(--text-3);
  margin-bottom:6px;
  font-weight:500;
}
.compare-row dd{
  margin:0;
  font-size:14px;
  line-height:1.75;
  color:var(--text-1);
}
.compare-row dd.mono{font-family:var(--font-mono);font-size:13px;color:var(--text-2);}
.compare-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 32px;
  border-top:1px solid var(--line);
  background:rgba(255,255,255,0.02);
  font-size:13px;
  color:var(--text-3);
  flex-wrap:wrap;
}

/* ============ 场景卡 ============ */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.scene-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.scene-card:hover{
  transform:translateY(-4px);
  border-color:rgba(31,215,176,0.35);
  box-shadow:0 16px 40px rgba(0,0,0,0.5);
}
.scene-card .idx{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--brand);
  letter-spacing:0.1em;
  display:block;
  margin-bottom:14px;
}
.scene-card h3{font-size:17px;margin-bottom:10px;}
.scene-card p{font-size:14px;line-height:1.75;color:var(--text-2);margin:0;}

/* ============ 折叠说明组 ============ */
.accordion-plain{
  border-top:1px solid var(--line);
}
.acc-item{
  border-bottom:1px solid var(--line);
}
.acc-btn{
  width:100%;
  background:transparent;
  border:0;
  padding:22px 8px 22px 0;
  display:flex;
  align-items:center;
  gap:18px;
  text-align:left;
  cursor:pointer;
  color:var(--text-2);
  transition:color var(--t);
}
.acc-btn .num{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--text-3);
  flex:none;
  transition:color var(--t);
}
.acc-btn .t{
  flex:1 1 auto;
  font-size:17px;
  font-weight:600;
  color:var(--text-1);
}
.acc-btn .sign{
  flex:none;
  width:26px;height:26px;
  border:1px solid var(--line-soft);
  border-radius:50%;
  position:relative;
  transition:border-color var(--t),background var(--t),transform var(--t);
}
.acc-btn .sign::before,
.acc-btn .sign::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--text-2);
  transform:translate(-50%,-50%);
  transition:background var(--t),opacity var(--t);
}
.acc-btn .sign::before{width:10px;height:1.5px;}
.acc-btn .sign::after{width:1.5px;height:10px;}
.acc-btn[aria-expanded="true"]{color:var(--text-1);}
.acc-btn[aria-expanded="true"] .num{color:var(--brand);}
.acc-btn[aria-expanded="true"] .sign{border-color:rgba(31,215,176,0.5);background:rgba(31,215,176,0.1);transform:rotate(180deg);}
.acc-btn[aria-expanded="true"] .sign::before,
.acc-btn[aria-expanded="true"] .sign::after{background:var(--brand);}
.acc-btn[aria-expanded="true"] .sign::after{opacity:0;}
.acc-body{
  padding:0 46px 24px 37px;
  font-size:15px;
  line-height:1.9;
  color:var(--text-2);
}
.acc-body ol{margin:12px 0 0;counter-reset:step;}
.acc-body ol li{
  position:relative;
  padding-left:24px;
  margin-bottom:10px;
}
.acc-body ol li::before{
  counter-increment:step;
  content:counter(step);
  position:absolute;left:0;top:0;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--brand);
  line-height:1.9;
}
.acc-body strong{color:var(--text-1);font-weight:600;}

/* ============ FAQ ============ */
.faq-box{
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line-soft);
  border-radius:var(--r-block);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-btn{
  width:100%;
  background:transparent;
  border:0;
  padding:24px 28px 24px 24px;
  display:flex;
  align-items:flex-start;
  gap:14px;
  text-align:left;
  cursor:pointer;
  position:relative;
  transition:background var(--t);
}
.faq-btn:hover{background:rgba(255,255,255,0.03);}
.faq-btn::before{
  content:"";
  position:absolute;left:0;top:0;bottom:0;
  width:3px;
  background:var(--brand);
  opacity:0;
  transition:opacity var(--t);
}
.faq-btn[aria-expanded="true"]::before{opacity:1;}
.faq-btn .q{flex:1 1 auto;font-size:16px;font-weight:600;color:var(--text-2);transition:color var(--t);}
.faq-btn[aria-expanded="true"] .q{color:var(--text-1);}
.faq-btn .arrow{
  flex:none;
  width:9px;height:9px;
  margin-top:8px;
  border-right:2px solid var(--text-3);
  border-bottom:2px solid var(--text-3);
  transform:rotate(45deg);
  transition:transform var(--t),border-color var(--t);
}
.faq-btn[aria-expanded="true"] .arrow{border-color:var(--brand);transform:rotate(-135deg);}
.faq-body{padding:0 40px 26px 36px;font-size:15px;line-height:1.9;color:var(--text-2);}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,0.07),rgba(255,255,255,0.02));
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(31,215,176,0.24);
  border-radius:var(--r-block);
  box-shadow:0 0 40px rgba(31,215,176,0.10),var(--shadow-card);
  padding:36px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:10px;}
.cta-band p{font-size:15px;color:var(--text-2);margin:0;}
.cta-band .mono{font-family:var(--font-mono);font-size:13px;color:var(--text-3);margin-top:8px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:none;}

/* ============ 页脚 ============ */
.site-footer{
  background:#04080E;
  border-top:1px solid var(--line);
  padding:64px 0 0;
  margin-top:var(--gap-section);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-3);margin:0;max-width:340px;}
.footer-col h3{
  font-size:15px;
  color:var(--text-1);
  margin-bottom:18px;
  font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);text-decoration:underline;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}
.fb-links{display:flex;gap:20px;flex-wrap:wrap;}
.fb-links a{color:var(--text-3);}
.fb-links a:hover{color:var(--brand);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--gap-section:72px;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .hero-grid{gap:40px;}
}
@media (max-width:991.98px){
  .nav-menu{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-lines{display:none;}
  .compare-grid{grid-template-columns:1fr;}
  .compare-col{
    border-right:0;
    border-bottom:1px solid var(--line);
    padding:26px 24px;
  }
  .compare-col:last-child{border-bottom:0;}
  .compare-foot{padding:16px 24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px;}
  .cta-actions{width:100%;}
}
@media (max-width:767.98px){
  :root{--gap-section:56px;}
  .container{padding:0 16px;}
  .hero{padding:36px 0 56px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .section-head .head-right{padding-bottom:0;}
  .scene-grid{grid-template-columns:1fr;}
  .acc-body{padding:0 20px 22px 37px;}
  .faq-body{padding:0 24px 24px 24px;}
  .faq-btn{padding:20px 20px 20px 18px;}
  .hero-stats{gap:20px 28px;}
  .hero-stats .hero-stat b{font-size:18px;}
  .cta-actions .btn-h{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:575.98px){
  body{font-size:15px;}
  .brand-text{font-size:15px;}
  .hero h1{font-size:28px;}
  .hero-sub{font-size:15px;}
  .scene-card{padding:18px;}
  .compare-col{padding:22px 18px;}
  .glass-card{padding:18px;}
  .faq-btn .q{font-size:15px;}
  .btn-h{height:44px;padding:0 20px;}
}

/* Bootstrap 覆盖 */
.offcanvas.offcanvas-end{color:var(--text-2);}
.btn-close:focus{box-shadow:none;}

/* roulang page: category1 */
:root{
  --bg-0:#060B12;
  --bg-1:#0B141F;
  --bg-2:#101D2B;
  --bg-deep:#04080E;
  --brand:#1FD7B0;
  --brand-deep:#0E9C88;
  --accent:#FF8A3C;
  --text-1:#EEF4FA;
  --text-2:#A9B8C8;
  --text-3:#6F8296;
  --line:rgba(140,180,220,0.14);
  --glass-border:rgba(255,255,255,0.08);
  --radius-xl:20px;
  --radius-lg:18px;
  --radius-sm:12px;
  --shadow-card:0 12px 40px rgba(0,0,0,0.45);
  --glow:0 8px 30px rgba(31,215,176,0.22);
  --glow-strong:0 12px 36px rgba(31,215,176,0.34);
  --ease:cubic-bezier(.4,0,.2,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
  --sec:96px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .25s var(--ease);}
a:hover{color:#5CE7C8;text-decoration:underline;text-underline-offset:4px;}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;letter-spacing:-0.01em;line-height:1.25;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;}
@media (min-width:1400px){.container{max-width:1280px;}}

/* ============ 顶部信息条 ============ */
.topbar{
  height:36px;
  background:rgba(255,255,255,0.03);
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--text-2);
  display:flex;
  align-items:center;
}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;}
.topbar-left{display:flex;align-items:center;gap:9px;font-family:var(--mono);font-size:12.5px;color:var(--text-2);letter-spacing:.02em;}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(31,215,176,.8);display:inline-block;}
.topbar-mid{color:var(--text-3);font-size:13px;}
.topbar-right{display:flex;align-items:center;gap:20px;}
.topbar-right a{color:var(--text-2);font-size:13px;}
.topbar-right a:hover{color:var(--brand);text-decoration:none;}
.topbar-right a.is-main{color:var(--brand);font-weight:600;}
.topbar-right a.is-main i{margin-left:4px;font-size:11px;transition:transform .25s var(--ease);}
.topbar-right a.is-main:hover i{transform:translateX(3px);}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  height:68px;
  background:rgba(6,11,18,0.72);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),backdrop-filter .25s var(--ease),border-color .25s var(--ease);
}
.site-header.scrolled{
  background:rgba(6,11,18,0.86);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid rgba(31,215,176,0.18);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{display:flex;flex-direction:column;gap:5px;width:22px;}
.brand-mark i{display:block;height:2px;background:transparent;border:1px solid var(--brand);border-radius:2px;transform:skewX(-28deg);}
.brand-mark i:first-child{width:18px;}
.brand-mark i:last-child{width:12px;border-color:rgba(31,215,176,.55);}
.brand-text{color:var(--text-1);font-weight:700;font-size:17px;letter-spacing:-0.01em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-link{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  color:var(--text-2);
  font-size:15px;
  border-radius:10px;
  position:relative;
  text-decoration:none;
  transition:color .25s var(--ease),background .25s var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,0.04);text-decoration:none;}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:18px;
  height:2px;
  transform:translateX(-50%);
  background:var(--brand);
  border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid rgba(255,255,255,0.14);
  border-radius:12px;
  background:transparent;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;}

/* ============ 按钮 ============ */
.btn{
  --bs-btn-focus-box-shadow:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  height:46px;
  padding:0 26px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  text-decoration:none;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.btn:hover{text-decoration:none;}
.btn-brand{background:var(--brand);color:#04140F;box-shadow:var(--glow);}
.btn-brand:hover{background:#33E0BD;color:#04140F;transform:translateY(-2px);box-shadow:var(--glow-strong);}
.btn-brand:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,0.18);color:var(--text-1);}
.btn-ghost:hover{border-color:var(--brand);color:var(--text-1);box-shadow:0 0 0 3px rgba(31,215,176,0.10);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:10px;}
.text-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--brand);
  font-size:14px;
  font-weight:600;
}
.text-arrow i{font-size:12px;transition:transform .25s var(--ease);}
.text-arrow:hover{text-decoration:none;color:#5CE7C8;}
.text-arrow:hover i{transform:translateX(3px);}

/* ============ 标签与徽章 ============ */
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 11px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  background:rgba(31,215,176,0.12);
  color:var(--brand);
  letter-spacing:.02em;
}
.tag-accent{background:rgba(255,138,60,0.12);color:var(--accent);}
.tag-plain{background:rgba(255,255,255,0.06);color:var(--text-2);}
.mono{font-family:var(--mono);letter-spacing:.01em;}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:18px;
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand);text-decoration:none;}
.crumb i{font-size:10px;color:var(--text-3);opacity:.7;}
.crumb .cur{color:var(--text-2);}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding:64px 0 88px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  opacity:0.14;
  pointer-events:none;
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,11,18,0.55) 0%,rgba(6,11,18,0.92) 65%,var(--bg-0) 100%);
}
.hero-lines{
  position:absolute;
  right:4%;
  bottom:12%;
  display:flex;
  flex-direction:column;
  gap:11px;
  pointer-events:none;
}
.hero-lines i{
  display:block;
  width:132px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,215,176,0.75));
  transform:skewX(-32deg);
}
.hero-lines i:nth-child(2){width:96px;opacity:.7;}
.hero-lines i:nth-child(3){width:64px;opacity:.45;}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.hero-copy h1{
  font-size:clamp(30px,4.2vw,46px);
  font-weight:800;
  margin:16px 0 18px;
}
.hero-lead{
  font-size:16.5px;
  line-height:1.85;
  color:var(--text-2);
  max-width:560px;
  margin-bottom:30px;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-facts{
  display:flex;
  flex-wrap:wrap;
  gap:36px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-facts li{display:flex;flex-direction:column;gap:4px;}
.hero-facts .k{font-size:12.5px;color:var(--text-3);}
.hero-facts .v{font-family:var(--mono);font-size:19px;color:var(--text-1);font-weight:600;}
.hero-media{
  position:relative;
  border-radius:var(--radius-xl);
  overflow:hidden;
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow-card);
  background:var(--bg-2);
}
.hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,11,18,0) 45%,rgba(6,11,18,0.65) 100%);
}
.hero-media .media-cap{
  position:absolute;
  left:20px;
  bottom:18px;
  z-index:2;
  font-size:13px;
  color:var(--text-1);
  display:flex;
  align-items:center;
  gap:10px;
}

/* ============ 区块通用 ============ */
.section{padding:var(--sec) 0;}
.section-tight{padding-top:40px;}
.section-head{max-width:720px;margin-bottom:48px;}
.eyebrow{
  display:inline-block;
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.14em;
  color:var(--brand);
  text-transform:uppercase;
  margin-bottom:14px;
}
.section-head h2{
  font-size:clamp(24px,2.8vw,32px);
  margin-bottom:16px;
  position:relative;
  padding-left:18px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  bottom:6px;
  width:3px;
  border-radius:2px;
  background:var(--brand);
}
.section-sub{color:var(--text-2);font-size:15.5px;max-width:660px;}

/* ============ 安装包长条列表 ============ */
.pkg-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:0 48px;
}
.pkg-row{
  display:grid;
  grid-template-columns:40% 1fr;
  gap:22px;
  padding:28px 0;
  border-bottom:1px solid var(--line);
  align-items:flex-start;
}
.pkg-row:first-child,.pkg-row:nth-child(2){padding-top:8px;}
.pkg-thumb{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--glass-border);
  background:var(--bg-2);
  position:relative;
}
.pkg-thumb img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .35s var(--ease);
}
.pkg-row:hover .pkg-thumb img{transform:scale(1.03);}
.pkg-row:hover .pkg-thumb{border-color:rgba(31,215,176,0.35);}
.pkg-body h3{
  font-size:19px;
  margin:12px 0 10px;
  font-weight:700;
}
.pkg-body p{font-size:14.5px;line-height:1.8;color:var(--text-2);margin-bottom:12px;}
.pkg-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  font-size:12.5px;
  color:var(--text-3);
  font-family:var(--mono);
  margin-bottom:14px;
}
.pkg-meta span{display:inline-flex;align-items:center;gap:6px;}
.pkg-meta i{color:var(--brand-deep);font-size:11px;}

/* ============ 安装前检查 ============ */
.check-strip{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--radius-xl);
  padding:36px 34px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:28px;
}
.check-item{position:relative;padding-top:8px;}
.check-item .num{
  font-family:var(--mono);
  font-size:13px;
  color:var(--brand);
  letter-spacing:.08em;
  display:block;
  margin-bottom:12px;
}
.check-item h3{font-size:16.5px;margin-bottom:8px;}
.check-item p{font-size:14px;color:var(--text-2);line-height:1.75;}
.check-item::before{
  content:"";
  position:absolute;
  left:0;top:0;
  width:34px;height:2px;
  background:var(--brand-deep);
  border-radius:2px;
}

/* ============ 安装流程 ============ */
.flow-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
  position:relative;
}
.flow-grid::before{
  content:"";
  position:absolute;
  left:6%;
  right:6%;
  top:22px;
  height:1px;
  background:linear-gradient(90deg,rgba(31,215,176,0.5),rgba(140,180,220,0.10));
}
.flow-card{
  position:relative;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.flow-card:hover{transform:translateY(-4px);border-color:rgba(31,215,176,0.35);box-shadow:0 18px 44px rgba(0,0,0,.45);}
.flow-dot{
  width:44px;height:44px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--mono);
  font-size:15px;
  font-weight:600;
  color:var(--brand);
  background:var(--bg-0);
  border:1px solid rgba(31,215,176,0.45);
  margin-bottom:20px;
  box-shadow:0 0 22px rgba(31,215,176,0.14);
}
.flow-card h3{font-size:17px;margin-bottom:10px;}
.flow-card p{font-size:14px;line-height:1.8;color:var(--text-2);}

/* ============ FAQ ============ */
.faq-box{
  background:linear-gradient(160deg,rgba(255,255,255,0.07),rgba(255,255,255,0.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-xl);
  box-shadow:var(--shadow-card);
  padding:8px 28px;
}
.faq-box .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);}
.faq-box .accordion-item:last-child{border-bottom:0;}
.faq-box .accordion-header{margin:0;}
.faq-box .accordion-button{
  background:transparent;
  color:var(--text-1);
  font-size:16.5px;
  font-weight:600;
  padding:22px 0 22px 0;
  border-radius:0;
  box-shadow:none;
  transition:color .25s var(--ease),border-color .25s var(--ease),padding .25s var(--ease);
}
.faq-box .accordion-button::after{
  content:"";
  background:none;
  width:10px;height:10px;
  border-right:2px solid var(--text-3);
  border-bottom:2px solid var(--text-3);
  transform:rotate(45deg);
  transition:transform .25s var(--ease),border-color .25s var(--ease);
  margin-left:auto;
}
.faq-box .accordion-button:not(.collapsed){
  color:var(--text-1);
  background:transparent;
  box-shadow:none;
  border-left:3px solid var(--brand);
  padding-left:16px;
}
.faq-box .accordion-button:not(.collapsed)::after{
  transform:rotate(-135deg);
  border-color:var(--brand);
}
.faq-box .accordion-button:focus{box-shadow:none;}
.faq-box .accordion-body{
  padding:0 0 24px 0;
  color:var(--text-2);
  font-size:14.8px;
  line-height:1.9;
}
.faq-box .accordion-button:not(.collapsed) + .accordion-collapse .accordion-body,
.faq-box .accordion-button:not(.collapsed) ~ .accordion-body{padding-left:16px;}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  border-radius:var(--radius-xl);
  border:1px solid rgba(31,215,176,0.22);
  background:linear-gradient(120deg,rgba(31,215,176,0.10),rgba(255,255,255,0.02) 55%);
  box-shadow:0 18px 60px rgba(0,0,0,0.5),0 0 0 1px rgba(255,255,255,0.02) inset;
  padding:46px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-60px;
  top:-60px;
  width:240px;height:240px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(31,215,176,0.22),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:12px;}
.cta-band p{font-size:15px;color:var(--text-2);max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;position:relative;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:44px;
  padding-bottom:52px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-3);max-width:340px;}
.footer-col h3{
  font-size:14px;
  color:var(--text-1);
  margin-bottom:18px;
  letter-spacing:.04em;
  font-weight:600;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{color:var(--text-3);font-size:14px;}
.footer-col ul li a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  font-size:13px;
  color:var(--text-3);
  flex-wrap:wrap;
}
.fb-links{display:flex;gap:20px;}
.fb-links a{color:var(--text-3);font-size:13px;}
.fb-links a:hover{color:var(--brand);text-decoration:none;}

/* ============ 移动抽屉 ============ */
.offcanvas.dark-drawer{
  background:var(--bg-1);
  color:var(--text-2);
  width:280px;
  border-left:1px solid var(--line);
}
.dark-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.dark-drawer .offcanvas-title{color:var(--text-1);font-size:16px;font-weight:700;}
.dark-drawer .btn-close{filter:invert(1) grayscale(1) brightness(1.6);opacity:.7;}
.dark-drawer .offcanvas-body{padding:14px 12px 24px;}
.drawer-link{
  display:flex;
  align-items:center;
  height:48px;
  padding:0 14px;
  border-radius:12px;
  color:var(--text-2);
  font-size:15px;
  text-decoration:none;
  transition:background .25s var(--ease),color .25s var(--ease);
}
.drawer-link:hover{background:rgba(255,255,255,0.05);color:var(--text-1);text-decoration:none;}
.drawer-link.active{color:var(--brand);background:rgba(31,215,176,0.08);}
.drawer-cta{margin-top:18px;padding:0 8px;}
.drawer-cta .btn{width:100%;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--sec:80px;}
  .hero-inner{gap:40px;}
}
@media (max-width:991.98px){
  :root{--sec:72px;}
  .nav-menu{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-media{order:2;}
  .hero-copy{order:1;}
  .pkg-grid{grid-template-columns:1fr;gap:0;}
  .pkg-row:first-child,.pkg-row:nth-child(2){padding-top:24px;}
  .check-strip{grid-template-columns:repeat(2,1fr);gap:24px;}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .flow-grid::before{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px;}
}
@media (max-width:767.98px){
  :root{--sec:56px;}
  .topbar-mid{display:none;}
  .topbar-right{gap:14px;}
  .container{padding-left:16px;padding-right:16px;}
  .brand-text{font-size:15px;}
  .section-head{margin-bottom:32px;}
  .pkg-row{grid-template-columns:1fr;gap:16px;}
  .hero-facts{gap:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  .site-header,.nav-wrap{height:60px;}
  .brand-text{font-size:14px;}
  .hero-copy h1{font-size:27px;}
  .hero-lead{font-size:15px;}
  .hero-facts .v{font-size:16px;}
  .check-strip{grid-template-columns:1fr;padding:26px 20px;}
  .flow-grid{grid-template-columns:1fr;}
  .faq-box{padding:4px 18px;}
  .faq-box .accordion-button{font-size:15.5px;}
  .pkg-body h3{font-size:17px;}
  .btn{height:44px;padding:0 20px;font-size:14.5px;}
  .hero-btns .btn{width:100%;}
}

/* roulang page: category3 */
:root{
  --bg-0:#060B12;
  --bg-1:#0B141F;
  --bg-2:#101D2B;
  --brand:#1FD7B0;
  --brand-deep:#0E9C88;
  --brand-soft:rgba(31,215,176,.12);
  --accent:#FF8A3C;
  --text-1:#EEF4FA;
  --text-2:#A9B8C8;
  --body-text:#D8E2EC;
  --text-3:#6F8296;
  --line:rgba(140,180,220,.14);
  --glass-border:rgba(255,255,255,.08);
  --r-section:20px;
  --r-card:18px;
  --r-input:12px;
  --r-pill:999px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,Consolas,"Courier New",monospace;
  --shadow-card:0 12px 40px rgba(0,0,0,.45);
  --shadow-btn:0 8px 30px rgba(31,215,176,.22);
  --shadow-btn-hover:0 12px 36px rgba(31,215,176,.34);
  --t:0.25s cubic-bezier(.4,0,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--body-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color var(--t),opacity var(--t)}
a:hover{color:#5AEBD0;text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{color:var(--text-1);font-weight:700;line-height:1.25;letter-spacing:-.01em;margin:0}
h1{font-size:clamp(30px,4.2vw,46px);font-weight:800}
h2{font-size:clamp(24px,2.8vw,32px)}
h3{font-size:20px}
p{margin:0 0 18px}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1400px){.container{max-width:1280px}}

/* ---------- top bar ---------- */
.topbar{
  height:36px;
  display:flex;
  align-items:center;
  font-size:13px;
  color:var(--text-2);
  background:rgba(255,255,255,.03);
  border-bottom:1px solid var(--line);
}
.topbar .container{display:flex;align-items:center;gap:24px;height:100%}
.tb-domain{display:flex;align-items:center;gap:8px;white-space:nowrap;font-family:var(--font-mono);font-size:12.5px;color:var(--text-2)}
.tb-dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px rgba(31,215,176,.7);flex:0 0 auto}
.tb-note{margin-left:auto;color:var(--text-3)}
.tb-links{display:flex;align-items:center;gap:20px;white-space:nowrap}
.tb-links a{color:var(--text-2);font-size:13px}
.tb-links a.primary{color:var(--brand);font-weight:600}
.tb-links a.primary i{font-size:12px;margin-left:4px;transition:transform var(--t);display:inline-block}
.tb-links a.primary:hover i{transform:translateX(3px)}
.tb-links a:hover{color:var(--text-1);text-decoration:none}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  border-bottom:1px solid transparent;
  transition:background var(--t),backdrop-filter var(--t),border-color var(--t);
}
.site-header.is-scrolled{
  background:rgba(6,11,18,.86);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom-color:rgba(31,215,176,.18);
}
.header-inner{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-mark{position:relative;width:24px;height:24px;display:inline-block;flex:0 0 auto}
.brand-mark i{position:absolute;top:0;width:2px;height:24px;border-radius:2px;background:linear-gradient(180deg,var(--brand),rgba(31,215,176,.18));transform:skewX(-22deg);transition:transform var(--t)}
.brand-mark i:first-child{left:6px}
.brand-mark i:last-child{left:15px;top:6px;height:18px}
.brand:hover .brand-mark i:first-child{transform:skewX(-22deg) translateY(-2px)}
.brand:hover .brand-mark i:last-child{transform:skewX(-22deg) translateY(2px)}
.brand-text{color:var(--text-1);font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
  white-space:nowrap;
  transition:color var(--t),background var(--t);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.04);text-decoration:none}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:6px;
  transform:translateX(-50%);
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 10px rgba(31,215,176,.6);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(255,255,255,.03);
  cursor:pointer;
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1)}

/* ---------- buttons ---------- */
.btn-main,.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 26px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-input);
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
  text-decoration:none;
  white-space:nowrap;
}
.btn-main{background:var(--brand);color:#04140F;box-shadow:var(--shadow-btn)}
.btn-main:hover{background:#3BE1C2;color:#04140F;transform:translateY(-2px);box-shadow:var(--shadow-btn-hover);text-decoration:none}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);box-shadow:0 0 0 3px rgba(31,215,176,.10);transform:translateY(-2px);text-decoration:none}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-pill{border-radius:var(--r-pill)}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:600;font-size:15px;
}
.btn-text i{transition:transform var(--t);font-size:13px}
.btn-text:hover{text-decoration:none;color:#5AEBD0}
.btn-text:hover i{transform:translateX(3px)}

/* ---------- shared blocks ---------- */
.section{padding:96px 0}
.section-tight{padding-top:40px}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{position:relative;padding-left:16px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;width:4px;height:1em;border-radius:3px;background:var(--brand);
}
.lead{color:var(--text-2);font-size:16px;margin-top:14px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.06em;
  color:var(--brand);
  background:var(--brand-soft);
  border:1px solid rgba(31,215,176,.22);
  border-radius:var(--r-pill);
  padding:4px 12px;
  margin-bottom:16px;
  font-weight:600;
}
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--glass-border);
  box-shadow:var(--shadow-card);
  border-radius:var(--r-card);
}
.card-solid{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.card-solid:hover{transform:translateY(-4px);border-color:rgba(31,215,176,.35);box-shadow:0 16px 40px rgba(0,0,0,.5)}
.mono{font-family:var(--font-mono)}
.tag{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;
  font-size:12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);
  border:1px solid rgba(31,215,176,.2);
}
.tag-accent{background:rgba(255,138,60,.12);color:var(--accent);border-color:rgba(255,138,60,.25)}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand);text-decoration:none}
.crumb i{font-size:11px;color:var(--text-3)}
.crumb span{color:var(--text-3)}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:48px 0 88px;background:var(--bg-0)}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.15;z-index:0;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,var(--bg-0) 0%,rgba(6,11,18,.55) 42%,var(--bg-0) 100%),
             radial-gradient(900px 420px at 8% -20%,rgba(31,215,176,.14),transparent 62%);
}
.page-hero .container{position:relative;z-index:2}
.hero-lines{position:absolute;right:40px;bottom:30px;z-index:2;display:flex;gap:12px;transform:skewX(-24deg);pointer-events:none}
.hero-lines i{display:block;width:1px;background:linear-gradient(180deg,rgba(31,215,176,0),rgba(31,215,176,.85))}
.hero-lines i:nth-child(1){height:78px}
.hero-lines i:nth-child(2){height:60px}
.hero-lines i:nth-child(3){height:44px}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text-2);margin-top:18px;max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:38px}
.hstat b{display:block;font-family:var(--font-mono);font-size:22px;color:var(--text-1);font-weight:600;letter-spacing:.01em}
.hstat span{font-size:13px;color:var(--text-3)}
.hero-card{padding:28px}
.hero-card h3{font-size:17px;margin-bottom:6px}
.hero-card p{font-size:13.5px;color:var(--text-3);margin-bottom:20px}
.qr-box{display:flex;gap:18px;align-items:center;margin-bottom:22px}
.qr{
  position:relative;width:110px;height:110px;flex:0 0 auto;
  background:#fff;border-radius:12px;overflow:hidden;
  box-shadow:0 8px 24px rgba(0,0,0,.35);
}
.qr::before{
  content:"";position:absolute;inset:11px;
  background-image:
    repeating-linear-gradient(90deg,#0b141f 0 6px,transparent 6px 12px),
    repeating-linear-gradient(0deg,#0b141f 0 6px,transparent 6px 12px);
  opacity:.82;
}
.qr::after{
  content:"";position:absolute;left:11px;top:11px;width:26px;height:26px;
  border:5px solid #0b141f;border-radius:2px;background:#fff;
}
.qr-hint{font-size:13.5px;color:var(--text-2);line-height:1.7}
.qr-hint b{display:block;color:var(--text-1);font-size:15px;margin-bottom:4px}
.plat-row{display:flex;flex-wrap:wrap;gap:10px;padding-top:20px;border-top:1px solid var(--line)}
.plat-chip{
  display:inline-flex;align-items:center;gap:7px;
  height:32px;padding:0 12px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:12.5px;color:var(--text-2);
}
.plat-chip i{color:var(--brand);font-size:14px}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:2px}
.timeline::before{
  content:"";position:absolute;left:27px;top:16px;bottom:16px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(31,215,176,.7),rgba(31,215,176,.55) 55%,rgba(31,215,176,.05));
}
.tl-item{position:relative;padding-left:78px;margin-bottom:26px}
.tl-item:last-child{margin-bottom:0}
.tl-dot{
  position:absolute;left:2px;top:6px;
  width:52px;height:52px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:15px;font-weight:600;color:var(--brand);
  background:var(--bg-1);
  border:1px solid rgba(31,215,176,.35);
  box-shadow:0 0 0 6px var(--bg-0);
  transition:border-color var(--t),box-shadow var(--t);
}
.tl-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.tl-card h3{font-size:19px;margin-bottom:10px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tl-card p{margin-bottom:0;color:var(--text-2);font-size:15px}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.tl-item:hover .tl-card{transform:translateY(-4px);border-color:rgba(31,215,176,.35);box-shadow:0 16px 40px rgba(0,0,0,.5)}
.tl-item:hover .tl-dot{border-color:var(--brand);box-shadow:0 0 0 6px var(--bg-0),0 0 22px rgba(31,215,176,.35)}
@media (min-width:992px){
  .tl-item:nth-child(even){padding-left:112px}
  .tl-item:nth-child(even) .tl-card{max-width:calc(100% - 10px)}
}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 24px}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 18px;border-radius:14px;
  background:rgba(255,255,255,.02);
  border:1px solid var(--line);
  transition:border-color var(--t),background var(--t);
}
.check-item:hover{border-color:rgba(31,215,176,.3);background:rgba(31,215,176,.05)}
.check-item i{color:var(--brand);font-size:18px;line-height:1.6;flex:0 0 auto}
.check-item b{display:block;color:var(--text-1);font-size:15px;margin-bottom:2px;font-weight:600}
.check-item span{font-size:13.5px;color:var(--text-2);line-height:1.7}

/* ---------- horizontal cards ---------- */
.rows{border-top:1px solid var(--line)}
.row-card{
  display:grid;grid-template-columns:40% 60%;
  gap:28px;align-items:center;
  padding:28px 0;
  border-bottom:1px solid var(--line);
  transition:background var(--t);
}
.row-card:hover{background:rgba(255,255,255,.015)}
.row-thumb{
  position:relative;border-radius:16px;overflow:hidden;
  aspect-ratio:16/10;background:var(--bg-1);
}
.row-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.row-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(6,11,18,.55) 100%)}
.row-card:hover .row-thumb img{transform:scale(1.03)}
.row-card h3{font-size:20px;margin-bottom:10px}
.row-card p{font-size:14.5px;color:var(--text-2);margin-bottom:12px}
.row-spec{display:flex;flex-wrap:wrap;gap:10px 26px;font-size:13px;color:var(--text-3);font-family:var(--font-mono)}

/* ---------- faq ---------- */
.faq-wrap{border-radius:var(--r-section);overflow:hidden;padding:6px 0}
.faq-wrap .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq-wrap .accordion-item:last-child{border-bottom:0}
.faq-wrap .accordion-button{
  background:transparent;color:var(--text-1);
  font-size:16px;font-weight:600;font-family:var(--font-sans);
  padding:22px 24px;box-shadow:none;border-radius:0;
  transition:color var(--t),background var(--t);
}
.faq-wrap .accordion-button:not(.collapsed){
  color:var(--brand);
  background:rgba(31,215,176,.05);
  box-shadow:inset 3px 0 0 var(--brand);
}
.faq-wrap .accordion-button:focus{box-shadow:inset 3px 0 0 var(--brand)}
.faq-wrap .accordion-button::after{
  content:"";background-image:none;width:11px;height:11px;flex:0 0 auto;
  border-right:2px solid var(--text-3);border-bottom:2px solid var(--text-3);
  transform:rotate(45deg);transition:transform var(--t),border-color var(--t);
  margin-left:16px;
}
.faq-wrap .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:var(--brand)}
.faq-wrap .accordion-body{
  padding:0 24px 24px;font-size:15px;color:var(--text-2);line-height:1.85;
  background:rgba(31,215,176,.05);
}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-section);
  padding:44px;
  display:flex;flex-wrap:wrap;align-items:center;gap:28px;
  background:linear-gradient(120deg,rgba(31,215,176,.10),rgba(255,255,255,.02));
  border:1px solid rgba(31,215,176,.22);
  box-shadow:0 0 60px rgba(31,215,176,.10);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15px;margin-bottom:0;max-width:640px}
.cta-actions{margin-left:auto;display:flex;flex-wrap:wrap;gap:14px}
.cta-note{font-family:var(--font-mono);font-size:13px;color:var(--text-3);margin-top:12px}

/* ---------- step nav ---------- */
.step-nav{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:0;position:relative;margin-top:8px;
}
.step-nav::before{
  content:"";position:absolute;left:8%;right:8%;top:19px;height:2px;
  background:linear-gradient(90deg,rgba(31,215,176,.5),rgba(31,215,176,.18));
}
.step-nav a{
  position:relative;z-index:1;
  display:flex;flex-direction:column;align-items:center;gap:10px;
  padding:0 12px;text-align:center;color:var(--text-2);
}
.step-nav a:hover{text-decoration:none;color:var(--brand)}
.sn-dot{
  width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-1);border:1px solid var(--line);
  color:var(--text-3);font-family:var(--font-mono);font-size:13px;
  transition:border-color var(--t),color var(--t),box-shadow var(--t);
}
.step-nav a:hover .sn-dot{border-color:var(--brand);color:var(--brand);box-shadow:0 0 18px rgba(31,215,176,.28)}
.step-nav a.current .sn-dot{background:var(--brand);color:#04140F;border-color:var(--brand);box-shadow:var(--shadow-btn)}
.step-nav a.current{color:var(--brand);font-weight:600}
.sn-label{font-size:14px}
.sn-sub{font-size:12.5px;color:var(--text-3);font-family:var(--font-mono)}

/* ---------- footer ---------- */
.site-footer{
  margin-top:0;
  background:#04080E;
  border-top:1px solid var(--line);
  padding:64px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:340px;margin:0}
.footer-col h3{font-size:15px;color:var(--text-1);margin-bottom:16px;font-weight:700}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--brand);text-decoration:underline}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-3);
}
.fb-links{display:flex;gap:20px;flex-wrap:wrap}
.fb-links a{color:var(--text-3)}
.fb-links a:hover{color:var(--brand)}

/* ---------- offcanvas ---------- */
.offcanvas.nav-drawer{background:var(--bg-1);border-left:1px solid var(--line);width:280px;color:var(--text-2)}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.nav-drawer .offcanvas-body{padding:18px 20px;display:flex;flex-direction:column;gap:6px}
.nav-drawer .brand-text{font-size:15px;white-space:normal;line-height:1.5}
.drawer-link{
  display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:12px;
  color:var(--text-2);font-size:15px;
}
.drawer-link:hover{background:rgba(255,255,255,.04);color:var(--text-1);text-decoration:none}
.drawer-link.active{color:var(--brand);background:var(--brand-soft);font-weight:600}
.drawer-cta{margin-top:16px}
.btn-close-white{filter:invert(1) grayscale(1) brightness(2)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .header-inner{gap:18px}
  .nav-link{padding:0 9px;font-size:14px}
}
@media (max-width:991px){
  .nav-menu,.header-actions{display:none}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .section{padding:72px 0}
  .page-hero{padding:36px 0 68px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:34px}
  .cta-actions{margin-left:0;width:100%}
  .check-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  .topbar .tb-note{display:none}
  .tb-links a:not(.primary){display:none}
  .hero-stats{gap:24px}
  .row-card{grid-template-columns:1fr;gap:18px;padding:24px 0}
  .step-nav::before{left:14%;right:14%}
  .step-nav{grid-template-columns:1fr;gap:18px}
  .step-nav::before{display:none}
  .step-nav a{flex-direction:row;justify-content:flex-start;text-align:left;gap:14px;padding:0}
  .sn-sub{display:none}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px}
  body{font-size:15px}
  .section{padding:56px 0}
  .hero-card,.card-solid,.tl-card,.cta-band{padding:18px}
  .cta-band{padding:22px}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .hero-lines{display:none}
  .qr-box{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}