/* roulang page: index */
:root{
  --bg:#0E0C14;
  --surface-1:#16121F;
  --surface-2:#1F1A2B;
  --bg-light:#F7F5FB;
  --primary:#FF5A3C;
  --primary-hover:#FF7355;
  --primary-active:#E8462B;
  --accent:#2EE6A8;
  --gold:#FFC857;
  --line-dark:rgba(255,255,255,.08);
  --line-light:rgba(14,12,20,.08);
  --text:#F5F2FA;
  --text-2:#A79FBB;
  --text-3:#6F6885;
  --ink:#16121F;
  --ink-2:#5A5468;
  --r-card:18px;
  --r-img:16px;
  --r-btn:12px;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 12px 32px -12px rgba(0,0,0,.6);
  --maxw:1240px;
}

.page-body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
.page-body *{box-sizing:border-box}
.page-body a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,opacity .2s ease}
.page-body img{max-width:100%;height:auto;display:block}
.page-body button,.page-body input,.page-body textarea{font:inherit;color:inherit}
.page-body ul{list-style:none;margin:0;padding:0}
.page-body p{margin:0}
.page-body :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
@media (max-width:640px){.container{padding:0 16px}}

.h1{font-size:clamp(30px,5vw,54px);line-height:1.15;font-weight:700;margin:0;letter-spacing:-.01em}
.h2{font-size:clamp(24px,3vw,36px);line-height:1.25;font-weight:700;margin:0;letter-spacing:-.01em}
.h3{font-size:21px;line-height:1.4;font-weight:600;margin:0}
.lead{color:var(--text-2);font-size:16px;line-height:1.8;margin:0}
.mono{font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--surface-2);
  border-bottom:1px solid var(--line-dark);
  font-size:13px;
  color:var(--text-2);
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:36px;
}
.topbar-domain{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--text-2);letter-spacing:.02em;
}
.topbar-domain::before{
  content:"";width:6px;height:6px;border-radius:999px;background:var(--accent);
  box-shadow:0 0 0 3px rgba(46,230,168,.16);
}
.topbar-tip{color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-actions{display:flex;align-items:center;gap:14px}
.topbar-link{color:var(--text-2);font-size:13px}
.topbar-link:hover{color:var(--primary)}
.topbar-cta{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border:1px solid rgba(255,90,60,.4);border-radius:999px;
  color:var(--primary);font-size:12px;transition:all .2s ease;
}
.topbar-cta:hover{background:rgba(255,90,60,.12);border-color:var(--primary)}
@media (max-width:900px){.topbar-tip{display:none}}
@media (max-width:560px){.topbar-inner{height:auto;padding-top:8px;padding-bottom:8px;flex-direction:column;align-items:flex-start;gap:6px}.topbar-actions{gap:10px}}

/* ============ 导航 ============ */
.sticky-wrap{position:sticky;top:0;z-index:80}
.site-header{
  background:rgba(14,12,20,.88);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line-dark);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(14,12,20,.97);box-shadow:0 12px 30px -18px rgba(0,0,0,.9);border-color:rgba(255,255,255,.12)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .nav-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(140deg,var(--primary),#B8341F);
  display:inline-flex;align-items:center;justify-content:center;
  color:#1A0E0A;font-weight:700;font-size:14px;letter-spacing:.02em;
}
.brand-text{font-size:17px;font-weight:700;color:var(--text);white-space:nowrap}
.brand-sub{display:block;font-size:11px;color:var(--text-3);font-weight:400;letter-spacing:.06em;margin-top:-2px}
.main-nav{display:flex;align-items:center;gap:6px}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);position:relative;transition:all .2s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:var(--primary);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-dark);
  background:transparent;cursor:pointer;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);transition:transform .2s ease,opacity .2s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.drawer{
  position:fixed;inset:0;z-index:90;display:none;
}
.drawer.is-open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(6,5,10,.7)}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:var(--surface-1);border-left:1px solid var(--line-dark);
  padding:24px 20px;display:flex;flex-direction:column;gap:8px;
  overflow-y:auto;
}
.drawer-title{font-size:13px;color:var(--text-3);padding:0 8px 8px;border-bottom:1px solid var(--line-dark);margin-bottom:8px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 12px;border-radius:12px;font-size:16px;color:var(--text-2);
  border:1px solid transparent;transition:all .2s ease;
}
.drawer-link:hover{background:rgba(255,255,255,.05);color:var(--text)}
.drawer-link.is-active{color:var(--primary);border-color:rgba(255,90,60,.3);background:rgba(255,90,60,.08)}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line-dark);display:flex;flex-direction:column;gap:10px}
.drawer-note{font-size:12px;color:var(--text-3);line-height:1.7}

@media (max-width:960px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
}
@media (max-width:560px){
  .brand-sub{display:none}
  .nav-actions .btn{display:none}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all .2s ease;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#1A0E0A}
.btn-primary:hover{background:var(--primary-hover);box-shadow:0 8px 20px rgba(255,90,60,.25);transform:translateY(-1px)}
.btn-primary:active{background:var(--primary-active);transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-ghost:active{background:rgba(255,90,60,.08)}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
@media (max-width:560px){.btn{height:48px;padding:0 18px}.hero-btns .btn{width:100%}}

.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-2);font-weight:500;
}
.text-link:hover{color:var(--primary)}
.text-link .arrow{transition:transform .2s ease;display:inline-block}
.text-link:hover .arrow{transform:translateX(3px)}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 11px;border-radius:999px;font-size:12.5px;line-height:1.6;
  background:rgba(46,230,168,.12);color:var(--accent);border:1px solid rgba(46,230,168,.22);
}
.badge-primary{background:rgba(255,90,60,.12);color:var(--primary);border-color:rgba(255,90,60,.28)}
.badge-gold{background:rgba(255,200,87,.12);color:var(--gold);border-color:rgba(255,200,87,.26)}

/* ============ 板块 ============ */
.section{padding:96px 0}
.section-light{background:var(--bg-light);color:var(--ink)}
.section-light .lead{color:var(--ink-2)}
.section-light .eyebrow{color:var(--primary)}
.section-light .h2{color:var(--ink)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:48px;flex-wrap:wrap;
}
.section-head-col{max-width:720px}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--accent);text-transform:uppercase;margin-bottom:12px;
}
.section-head .lead{margin-top:14px}
@media (max-width:1024px){.section{padding:72px 0}.section-head{margin-bottom:36px}}
@media (max-width:640px){.section{padding:48px 0}.section-head{margin-bottom:28px}}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:76px 0 92px;
  background:
    radial-gradient(900px 420px at 78% -12%, rgba(255,90,60,.18), transparent 62%),
    radial-gradient(720px 380px at 2% 108%, rgba(46,230,168,.10), transparent 62%),
    var(--bg);
  border-bottom:1px solid var(--line-dark);
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;position:relative;z-index:2}
.hero-badge{margin-bottom:20px}
.hero-title{max-width:16em}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:30em}
.hero-btns{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  margin-top:44px;padding-top:28px;border-top:1px solid var(--line-dark);
}
.stat-num{font-size:26px;font-weight:700;color:var(--text);line-height:1.2}
.stat-num em{font-style:normal;color:var(--primary);font-size:16px;margin-left:2px}
.stat-label{font-size:13px;color:var(--text-3);margin-top:4px}

.hero-visual{position:relative}
.hero-arch{
  position:absolute;right:-70px;top:-40px;width:330px;height:330px;
  border:1px solid rgba(255,90,60,.28);border-radius:999px 999px 0 0;
  pointer-events:none;
}
.hero-arch::after{
  content:"";position:absolute;left:38px;right:38px;top:38px;bottom:0;
  border:1px solid rgba(255,255,255,.07);border-radius:999px 999px 0 0;
}
.hero-img-wrap{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line-dark);background:var(--surface-1);box-shadow:var(--shadow);
  aspect-ratio:16/9;
}
.hero-img-wrap img{width:100%;height:100%;object-fit:cover}
.hero-float{
  position:absolute;left:-22px;bottom:-26px;
  background:var(--surface-2);border:1px solid rgba(255,255,255,.12);
  border-radius:14px;padding:14px 18px;min-width:172px;box-shadow:var(--shadow);
}
.float-label{display:block;font-size:12px;color:var(--text-3)}
.float-value{display:block;font-size:17px;font-weight:700;color:var(--accent);margin-top:2px}
.float-dots{display:flex;gap:5px;margin-top:10px}
.float-dots i{width:26px;height:4px;border-radius:2px;background:rgba(255,255,255,.12)}
.float-dots i:first-child{background:var(--accent)}
.float-dots i:nth-child(2){background:rgba(46,230,168,.5)}

@media (max-width:1024px){
  .hero{padding:56px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-arch{right:-90px;top:-30px;width:260px;height:260px}
  .hero-img-wrap{aspect-ratio:16/9}
}
@media (max-width:640px){
  .hero{padding:40px 0 56px}
  .hero-stats{grid-template-columns:1fr;gap:14px;margin-top:32px}
  .hero-float{left:12px;bottom:-20px;padding:12px 14px;min-width:150px}
}

/* ============ 痛点时间轴 ============ */
.pain-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:start}
.timeline{position:relative}
.timeline::before{
  content:"";position:absolute;left:15px;top:10px;bottom:10px;width:1px;
  background:linear-gradient(to bottom,rgba(255,90,60,.6),rgba(255,90,60,.05));
}
.tl-item{position:relative;padding-left:52px;padding-bottom:32px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:0;top:2px;width:31px;height:31px;border-radius:999px;
  background:#fff;border:1px solid rgba(255,90,60,.45);color:var(--primary);
  font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.tl-title{font-size:19px;font-weight:600;color:var(--ink);margin:0}
.tl-text{margin-top:8px;color:var(--ink-2);font-size:15px;line-height:1.8}
.pain-aside{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-light);
  background:#fff;box-shadow:0 18px 40px -30px rgba(14,12,20,.5);
}
.pain-aside img{width:100%;aspect-ratio:4/3;object-fit:cover}
.pain-aside-body{padding:22px 24px}
.pain-aside-title{font-size:16px;font-weight:600;color:var(--ink);margin:0 0 6px}
.pain-aside-text{font-size:14px;color:var(--ink-2);line-height:1.8;margin:0}
@media (max-width:1024px){.pain-grid{grid-template-columns:1fr;gap:40px}}

/* ============ 解决方案 ============ */
.solution-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center}
.solution-visual{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line-dark);
  background:var(--surface-1);aspect-ratio:4/3;box-shadow:var(--shadow);
}
.solution-visual img{width:100%;height:100%;object-fit:cover}
.feature-item{
  display:flex;gap:20px;padding:26px 0;border-top:1px solid var(--line-dark);
}
.feature-item:last-child{border-bottom:1px solid var(--line-dark)}
.feature-num{
  flex-shrink:0;width:38px;height:38px;border-radius:10px;
  background:rgba(255,90,60,.1);border:1px solid rgba(255,90,60,.28);
  color:var(--primary);font-weight:700;font-size:14px;
  display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
}
.feature-body h3{margin:0;font-size:19px;font-weight:600;color:var(--text)}
.feature-body p{margin-top:8px;color:var(--text-2);font-size:15px;line-height:1.8}
.feature-tags{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
@media (max-width:1024px){
  .solution-grid{grid-template-columns:1fr;gap:36px}
  .solution-visual{aspect-ratio:16/9}
}

/* ============ 成果数据 ============ */
.stats-section{
  position:relative;overflow:hidden;
  background:
    linear-gradient(115deg,rgba(255,90,60,.10) 0%,transparent 42%),
    linear-gradient(295deg,rgba(46,230,168,.08) 0%,transparent 46%),
    var(--bg);
  border-top:1px solid var(--line-dark);
  border-bottom:1px solid var(--line-dark);
}
.stats-section::before{
  content:"";position:absolute;left:-10%;top:-40%;width:60%;height:180%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.035),transparent);
  transform:rotate(12deg);pointer-events:none;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;z-index:2}
.stat-card{
  background:var(--surface-1);border:1px solid var(--line-dark);border-radius:var(--r-card);
  padding:26px 22px;transition:transform .2s ease,border-color .2s ease;
}
.stat-card:hover{transform:translateY(-3px);border-color:rgba(255,90,60,.35)}
.stat-card-num{font-size:34px;font-weight:700;line-height:1.1;color:var(--text);font-variant-numeric:tabular-nums}
.stat-card-num span{font-size:16px;color:var(--primary);margin-left:2px;font-weight:600}
.stat-card-label{margin-top:10px;font-size:14px;color:var(--text-2)}
.stat-card-desc{margin-top:6px;font-size:12.5px;color:var(--text-3)}

.bars{margin-top:44px;display:grid;gap:20px;position:relative;z-index:2}
.bar-row{display:grid;grid-template-columns:180px 1fr 64px;gap:18px;align-items:center}
.bar-name{font-size:14px;color:var(--text-2)}
.bar-track{height:8px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden}
.bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),#FF8A6E)}
.bar-fill.alt{background:linear-gradient(90deg,var(--accent),#7CF3CB)}
.bar-fill.gold{background:linear-gradient(90deg,var(--gold),#FFE0A3)}
.bar-val{font-size:14px;color:var(--text);text-align:right;font-variant-numeric:tabular-nums}
@media (max-width:1024px){.stats-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .stat-card{padding:20px 16px}
  .stat-card-num{font-size:26px}
  .bar-row{grid-template-columns:110px 1fr 52px;gap:12px}
  .bar-name{font-size:12.5px}
}

/* ============ 证言 ============ */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.quote-card{
  background:var(--surface-1);border:1px solid var(--line-dark);border-radius:var(--r-card);
  padding:28px 26px;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.quote-card:hover{transform:translateY(-3px);border-color:rgba(255,90,60,.35);box-shadow:0 18px 40px -24px rgba(0,0,0,.9)}
.quote-card.offset{margin-top:-24px}
.stars{display:flex;gap:4px;color:var(--gold);font-size:14px;letter-spacing:2px}
.quote-text{margin-top:16px;font-size:15px;line-height:1.85;color:var(--text-2)}
.quote-person{display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line-dark)}
.avatar{
  width:42px;height:42px;border-radius:999px;flex-shrink:0;
  background:linear-gradient(140deg,rgba(255,90,60,.3),rgba(46,230,168,.25));
  border:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:var(--text);
}
.person-name{font-size:14.5px;color:var(--text);font-weight:600}
.person-role{font-size:12.5px;color:var(--text-3)}
@media (max-width:1024px){
  .quote-grid{grid-template-columns:1fr;gap:20px}
  .quote-card.offset{margin-top:0}
}

/* ============ 内容列表 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface-1);border:1px solid var(--line-dark);border-radius:var(--r-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.news-card:hover{transform:translateY(-3px);border-color:rgba(255,90,60,.35);box-shadow:0 20px 40px -24px rgba(0,0,0,.9)}
.news-card.is-featured{grid-column:span 2;flex-direction:row}
.news-card.is-featured .news-media{width:46%;flex-shrink:0;aspect-ratio:auto;height:100%}
.news-card.is-featured .news-media img{height:100%}
.news-media{position:relative;aspect-ratio:16/9;background:var(--surface-2);overflow:hidden}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-card:hover .news-media img{transform:scale(1.03)}
.news-body{padding:22px 24px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--text-3);margin-bottom:12px}
.news-title{font-size:18px;font-weight:600;line-height:1.5;color:var(--text);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card.is-featured .news-title{font-size:22px}
.news-excerpt{
  margin-top:10px;font-size:14px;line-height:1.8;color:var(--text-2);flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-more{margin-top:16px;font-size:13.5px;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.news-more .arrow{transition:transform .2s ease;display:inline-block}
.news-card:hover .news-more .arrow{transform:translateX(3px)}
.news-grid-sub{margin-top:24px}
@media (max-width:1024px){
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .news-card.is-featured{grid-column:span 2;flex-direction:column}
  .news-card.is-featured .news-media{width:100%;aspect-ratio:16/9;height:auto}
}
@media (max-width:640px){
  .news-grid{grid-template-columns:1fr}
  .news-card.is-featured{grid-column:span 1}
  .news-card.is-featured .news-title{font-size:18px}
}

.empty-state{
  border:1px dashed rgba(255,255,255,.16);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-icon{font-size:26px;color:var(--text-3)}
.empty-state p{color:var(--text-2);font-size:15px}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:960px}
.faq-item{
  background:var(--surface-1);border:1px solid var(--line-dark);border-radius:var(--r-card);
  overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item[open]{border-color:rgba(255,90,60,.35);background:var(--surface-2)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 24px;font-size:17px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  position:relative;flex-shrink:0;width:22px;height:22px;
  transition:transform .25s ease;color:var(--primary);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;transition:opacity .25s ease}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-item[open] .faq-icon::after{opacity:0}
.faq-a{
  padding:0 24px 24px;max-width:calc(8 / 12 * 100% + 0px);
  border-left:3px solid transparent;
}
.faq-item[open] .faq-a{border-left-color:var(--primary)}
.faq-a p{color:var(--text-2);font-size:15px;line-height:1.85;padding-left:16px}
@media (max-width:760px){
  .faq-a{max-width:100%}
  .faq-item summary{padding:18px 18px;font-size:16px}
  .faq-a{padding:0 18px 20px}
}

/* ============ CTA 表单 ============ */
.cta-wrap{padding:0 0 96px}
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;
  background:linear-gradient(135deg,var(--primary) 0%,#D8431F 100%);
  padding:52px 48px;color:#1A0E0A;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-60px;width:320px;height:320px;
  border:1px solid rgba(255,255,255,.28);border-radius:999px 999px 0 0;pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:38%;
  background:linear-gradient(100deg,rgba(255,255,255,.14),transparent);pointer-events:none;
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.cta-copy h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;margin:0;color:#1A0E0A}
.cta-copy p{margin-top:14px;font-size:15px;line-height:1.8;color:rgba(26,14,10,.82);max-width:30em}
.cta-copy .btn{margin-top:26px;background:#1A0E0A;color:#FFF3EF;border-color:transparent}
.cta-copy .btn:hover{background:#2A1710;box-shadow:0 8px 20px rgba(26,14,10,.3)}
.cta-form{
  background:rgba(20,10,8,.86);border:1px solid rgba(255,255,255,.14);
  border-radius:18px;padding:26px 24px;display:grid;gap:16px;
}
.form-field{display:grid;gap:8px}
.form-label{font-size:13.5px;color:rgba(255,243,239,.78)}
.input{
  height:48px;padding:0 14px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.16);
  color:#FFF3EF;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  width:100%;
}
.input::placeholder{color:rgba(255,243,239,.38)}
.input:focus{
  outline:none;border-color:var(--accent);background:rgba(255,255,255,.08);
  box-shadow:inset 3px 0 0 var(--primary);
}
textarea.input{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.form-note{font-size:12.5px;color:rgba(255,243,239,.58);line-height:1.7}
.form-msg{font-size:13px;color:var(--accent);display:none}
.form-msg.is-show{display:block}
@media (max-width:1024px){
  .cta-wrap{padding-bottom:72px}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{padding:40px 28px;border-radius:20px}
}
@media (max-width:640px){
  .cta-wrap{padding-bottom:48px}
  .cta-band{padding:32px 20px}
  .cta-form{padding:20px 16px}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--surface-1);border-top:1px solid var(--line-dark);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.85;max-width:28em}
.footer-title{font-size:14px;font-weight:600;color:var(--accent);margin:0 0 16px;letter-spacing:.02em}
.footer-list{display:grid;gap:10px}
.footer-link{font-size:14px;color:var(--text-2);display:inline-block;transition:transform .2s ease,color .2s ease}
.footer-link:hover{color:var(--primary);transform:translateX(2px)}
.footer-contact{font-size:14px;color:var(--text-2);line-height:2}
.footer-contact strong{color:var(--text);font-weight:600}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
}
.footer-copy{font-size:13px;color:var(--text-3)}
.footer-legal{font-size:13px;color:var(--text-3);line-height:1.9;max-width:760px}
.to-top{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2);
  border:1px solid var(--line-dark);border-radius:999px;padding:8px 16px;transition:all .2s ease;
}
.to-top:hover{color:var(--primary);border-color:rgba(255,90,60,.4)}
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr 1fr;gap:32px}
  .footer-brand-col{grid-column:span 3}
}
@media (max-width:640px){
  .site-footer{padding:48px 0 24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-brand-col{grid-column:span 2}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ============ 移动端吸底 CTA ============ */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  padding:10px 16px;background:rgba(14,12,20,.96);
  border-top:1px solid var(--line-dark);
  transform:translateY(110%);transition:transform .25s ease;
}
.mobile-cta.is-show{transform:translateY(0)}
.mobile-cta .btn{width:100%}
@media (min-width:961px){.mobile-cta{display:none}}

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

/* roulang page: article */
:root{
  --bg:#0E0C14;
  --surface-1:#16121F;
  --surface-2:#1F1A2B;
  --bg-light:#F7F5FB;
  --primary:#FF5A3C;
  --primary-hover:#FF7355;
  --primary-active:#E8462B;
  --accent:#2EE6A8;
  --gold:#FFC857;
  --line-dark:rgba(255,255,255,.08);
  --line-light:rgba(14,12,20,.08);
  --text-1:#F5F2FA;
  --text-2:#A79FBB;
  --text-3:#6F6885;
  --ink-1:#16121F;
  --ink-2:#5A5468;
  --radius-card:18px;
  --radius-img:16px;
  --radius-btn:12px;
  --shadow-dark:0 1px 2px rgba(0,0,0,.4),0 12px 32px -12px rgba(0,0,0,.6);
  --shadow-light:0 1px 2px rgba(14,12,20,.04),0 12px 28px -18px rgba(14,12,20,.28);
  --container:1240px;
  --font-sans:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text-1);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
::selection{background:rgba(255,90,60,.35);}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--surface-2);
  border-bottom:1px solid var(--line-dark);
  font-size:13px;
  color:var(--text-2);
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  height:36px;
}
.topbar-domain{font-family:var(--font-mono);letter-spacing:.02em;color:var(--text-2);}
.topbar-tip{color:var(--text-3);}
.topbar-actions{display:flex;align-items:center;gap:10px;}
.topbar-actions .mini{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:999px;border:1px solid var(--line-dark);
  color:var(--text-2);font-size:12px;transition:.2s;
}
.topbar-actions .mini:hover{border-color:rgba(255,90,60,.6);color:var(--primary-hover);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(14,12,20,.96);
  border-bottom:1px solid var(--line-dark);
  transition:box-shadow .2s,background .2s;
}
.site-header.is-stuck{box-shadow:0 10px 30px -18px rgba(0,0,0,.9);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:72px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),#FF8A5C);
  color:#1A0E08;font-weight:800;font-size:15px;letter-spacing:.02em;
}
.brand-text{font-size:18px;font-weight:700;color:var(--text-1);letter-spacing:-.01em;}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;
  padding:10px 16px;border-radius:10px;
  font-size:15px;color:var(--text-2);
  transition:color .2s,background .2s;
}
.nav-link:hover{color:var(--text-1);background:var(--surface-1);}
.nav-link.is-active{color:var(--primary-hover);}
.nav-link.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;
  border-radius:2px;background:var(--primary);
}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:var(--radius-btn);
  background:var(--primary);color:#1A0E08;font-weight:600;font-size:15px;
  transition:background .2s,box-shadow .2s,transform .2s;
  white-space:nowrap;
}
.nav-cta:hover{background:var(--primary-hover);box-shadow:0 8px 20px rgba(255,90,60,.28);}
.nav-cta:active{background:var(--primary-active);transform:translateY(1px);}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-dark);background:var(--surface-1);
  color:var(--text-1);cursor:pointer;
}
.mobile-drawer{
  display:none;border-top:1px solid var(--line-dark);
  background:var(--surface-1);padding:12px 0 20px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:block;padding:14px 24px;font-size:16px;color:var(--text-2);
  border-bottom:1px solid var(--line-dark);
}
.mobile-drawer a.is-active{color:var(--primary-hover);}
.mobile-drawer .drawer-cta{margin:16px 24px 0;text-align:center;}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--surface-1);border-bottom:1px solid var(--line-dark);}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:nowrap;
  font-size:13px;color:var(--text-3);padding:14px 0;overflow:hidden;
}
.crumb a{color:var(--text-2);transition:color .2s;}
.crumb a:hover{color:var(--primary-hover);}
.crumb .sep{color:var(--text-3);}
.crumb .current{color:var(--text-1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:52vw;}

/* ---------- 文章头部 ---------- */
.article-hero{
  background:
    radial-gradient(900px 320px at 12% -20%, rgba(255,90,60,.16), transparent 60%),
    var(--bg);
  padding:56px 0 48px;
  border-bottom:1px solid var(--line-dark);
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(46,230,168,.1);color:var(--accent);
  font-size:13px;border:1px solid rgba(46,230,168,.25);
}
.article-h1{
  margin-top:18px;
  font-size:clamp(28px,4.2vw,46px);
  line-height:1.2;font-weight:700;letter-spacing:-.01em;
  color:var(--text-1);max-width:900px;
}
.article-sub{
  margin-top:16px;max-width:760px;
  color:var(--text-2);font-size:16px;line-height:1.85;
}
.meta-row{
  margin-top:24px;display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-size:13px;color:var(--text-3);
}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-row .meta-item i{color:var(--primary);font-size:12px;}

/* ---------- 正文区 ---------- */
.reading-section{background:var(--bg-light);color:var(--ink-1);padding:64px 0 80px;}
.reading-grid{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:32px;align-items:start;}
.article-card{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--radius-card);
  box-shadow:var(--shadow-light);padding:40px 44px;
}
.article-body{font-size:16px;line-height:1.9;color:var(--ink-1);word-wrap:break-word;overflow-wrap:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:clamp(21px,2.4vw,27px);line-height:1.35;font-weight:700;
  margin:2.5em 0 .8em;color:var(--ink-1);
}
.article-body h3{font-size:19px;font-weight:600;margin:1.6em 0 .6em;color:var(--ink-1);}
.article-body h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;}
.article-body a{color:var(--primary-active);text-decoration:underline;text-underline-offset:3px;}
.article-body strong{font-weight:700;}
.article-body ul{margin:0 0 1.2em;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:.5em;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:8px;height:8px;border-radius:2px;background:var(--accent);
}
.article-body ol{list-style:decimal;padding-left:1.5em;margin:0 0 1.2em;}
.article-body ol li{margin-bottom:.5em;}
.article-body ol li::marker{font-family:var(--font-mono);color:var(--primary-active);font-weight:700;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--primary);
  background:#FBF7F5;border-radius:0 12px 12px 0;color:var(--ink-2);
}
.article-body img{border-radius:var(--radius-img);margin:1.6em auto;box-shadow:var(--shadow-light);}
.article-body table{
  width:100%;border-collapse:collapse;font-size:14px;
  display:block;overflow-x:auto;margin:1.6em 0;
}
.article-body th{
  background:#F0ECF8;text-align:left;font-weight:600;color:var(--ink-1);white-space:nowrap;
}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line-light);}
.article-body hr{border:none;border-top:1px solid var(--line-light);margin:2.4em 0;}
.article-body code{
  font-family:var(--font-mono);font-size:.92em;
  background:#F2EEF9;padding:2px 6px;border-radius:6px;color:#8B3A22;
}

.empty-state{
  text-align:center;padding:56px 24px;
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 20px;border-radius:18px;
  display:grid;place-items:center;background:#F2EEF9;color:var(--primary);
  font-size:24px;
}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:10px;}
.empty-state p{color:var(--ink-2);margin-bottom:22px;}

/* ---------- 侧栏 ---------- */
.sidebar{display:flex;flex-direction:column;gap:22px;position:sticky;top:96px;}
.side-card{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--radius-card);
  box-shadow:var(--shadow-light);padding:24px;
}
.side-title{
  font-size:14px;font-weight:700;color:var(--ink-1);
  display:flex;align-items:center;gap:8px;margin-bottom:16px;
}
.side-title i{color:var(--primary);}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:10px;font-size:14px;color:var(--ink-2);
  border-left:3px solid transparent;transition:.2s;
}
.side-list a:hover{background:#F7F4FC;color:var(--ink-1);border-left-color:var(--primary);}
.side-list a.is-current{background:#F7F4FC;color:var(--primary-active);border-left-color:var(--primary);font-weight:600;}
.side-list .num{font-family:var(--font-mono);font-size:12px;color:#B4AEC4;}
.side-note{
  background:var(--surface-1);border:1px solid var(--line-dark);color:var(--text-2);
  border-radius:var(--radius-card);padding:22px;font-size:13.5px;line-height:1.8;
}
.side-note strong{color:var(--text-1);display:block;margin-bottom:8px;font-size:14px;}

/* ---------- 标签 / 上下篇 / 相关 ---------- */
.tag-block{margin-top:34px;padding-top:26px;border-top:1px solid var(--line-light);}
.tag-block h2{font-size:14px;color:var(--ink-2);font-weight:600;margin-bottom:14px;}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 15px;border-radius:999px;font-size:13px;
  background:#F2EEF9;color:#4B4460;border:1px solid var(--line-light);transition:.2s;
}
.tag:hover{background:var(--primary);color:#fff;border-color:var(--primary);}

.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:26px;}
.pager a{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--radius-card);
  box-shadow:var(--shadow-light);padding:20px 22px;transition:.2s;
}
.pager a:hover{border-color:rgba(255,90,60,.4);transform:translateY(-2px);}
.pager .pager-label{font-size:12px;color:var(--ink-2);display:flex;align-items:center;gap:8px;margin-bottom:10px;}
.pager .pager-label i{color:var(--primary);}
.pager .pager-title{
  font-size:15px;font-weight:600;color:var(--ink-1);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.pager .next{text-align:right;}
.pager .next .pager-label{justify-content:flex-end;}

.related-wrap{background:var(--bg-light);padding:0 0 80px;}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;}
.related-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--ink-1);}
.related-head p{font-size:14px;color:var(--ink-2);margin-top:6px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.post-card{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--radius-card);
  box-shadow:var(--shadow-light);overflow:hidden;display:flex;flex-direction:column;transition:.25s;
}
.post-card:hover{transform:translateY(-3px);border-color:rgba(255,90,60,.35);}
.post-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EDE8F6;}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s;}
.post-card:hover .thumb img{transform:scale(1.04);}
.post-card .thumb .badge{
  position:absolute;left:12px;top:12px;
  padding:4px 12px;border-radius:999px;font-size:12px;
  background:rgba(14,12,20,.72);color:#F5F2FA;border:1px solid var(--line-dark);
}
.post-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card h3{
  font-size:16.5px;font-weight:600;line-height:1.55;color:var(--ink-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card p{
  font-size:14px;color:var(--ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line-light);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:#8A83A0;
}
.post-card .foot .arrow{color:var(--primary);transition:transform .2s;}
.post-card:hover .foot .arrow{transform:translateX(4px);}

/* ---------- CTA ---------- */
.cta-band{
  background:
    radial-gradient(700px 260px at 85% 10%, rgba(255,200,87,.16), transparent 60%),
    linear-gradient(120deg,#1C1526,#120F1B);
  border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark);
  padding:64px 0;
}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:32px;align-items:center;}
.cta-inner h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;}
.cta-inner p{color:var(--text-2);margin-top:12px;font-size:15.5px;line-height:1.85;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:.2s;
}
.btn-primary{background:var(--primary);color:#1A0E08;}
.btn-primary:hover{background:var(--primary-hover);box-shadow:0 8px 20px rgba(255,90,60,.28);}
.btn-primary:active{background:var(--primary-active);transform:translateY(1px);}
.btn-ghost{border-color:var(--line-dark);color:var(--text-1);background:transparent;}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary-hover);}
.btn-text{color:var(--primary-hover);padding:13px 4px;}
.btn-text i{transition:transform .2s;}
.btn-text:hover i{transform:translateX(4px);}

/* ---------- 页脚 ---------- */
.site-footer{background:#0A0810;border-top:1px solid var(--line-dark);padding:64px 0 28px;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.1fr;gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-desc{color:var(--text-3);font-size:13.5px;line-height:1.85;max-width:320px;}
.footer-title{font-size:14px;font-weight:600;color:var(--accent);margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:11px;}
.footer-link{font-size:14px;color:var(--text-2);transition:.2s;display:inline-block;}
.footer-link:hover{color:var(--primary-hover);transform:translateX(-2px);}
.footer-contact{font-size:13.5px;color:var(--text-3);line-height:2;}
.footer-contact strong{color:var(--text-2);font-family:var(--font-mono);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
}
.footer-copy{font-size:13px;color:var(--text-3);}
.footer-legal{font-size:12.5px;color:#5C566F;line-height:1.8;max-width:760px;flex:1 1 420px;}
.to-top{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);
  border:1px solid var(--line-dark);border-radius:999px;padding:8px 16px;transition:.2s;
}
.to-top:hover{border-color:var(--primary);color:var(--primary-hover);}

@media (max-width:1024px){
  .reading-grid{grid-template-columns:1fr;gap:24px;}
  .sidebar{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .main-nav{display:none;}
  .menu-toggle{display:grid;place-items:center;}
  .nav-cta{display:none;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .topbar-tip{display:none;}
  .article-hero{padding:40px 0 34px;}
  .reading-section{padding:40px 0 56px;}
  .article-card{padding:26px 20px;border-radius:16px;}
  .crumb .current{max-width:34vw;}
  .pager{grid-template-columns:1fr;}
  .pager .next{text-align:left;}
  .pager .next .pager-label{justify-content:flex-start;}
  .related-grid{grid-template-columns:1fr;}
  .cta-band{padding:48px 0;}
  .btn{width:100%;}
  .cta-actions{flex-direction:column;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px;}
  .footer-brand{grid-column:1/-1;}
  .footer-desc{max-width:none;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .brand-text{font-size:16px;}
  .article-body{font-size:15.5px;line-height:1.85;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg:#0E0C14;
  --surface-1:#16121F;
  --surface-2:#1F1A2B;
  --bg-light:#F7F5FB;
  --primary:#FF5A3C;
  --primary-hover:#FF7355;
  --primary-active:#E8462B;
  --accent:#2EE6A8;
  --gold:#FFC857;
  --line:rgba(255,255,255,.08);
  --line-dark:rgba(14,12,20,.10);
  --text:#F5F2FA;
  --text-2:#A79FBB;
  --text-3:#6F6885;
  --ink:#16121F;
  --ink-2:#5A5468;
  --radius-card:18px;
  --radius-img:16px;
  --radius-btn:12px;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 12px 32px -12px rgba(0,0,0,.6);
  --container:1240px;
  --font:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}

.container{
  width:100%!important;
  max-width:var(--container)!important;
  margin-inline:auto!important;
  padding-inline:24px;
}

/* ---------- 顶部信息条 ---------- */
.site-header{position:sticky;top:0;z-index:60}
.topbar{
  height:36px;
  background:var(--surface-2);
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--text-2);
}
.topbar-inner{display:flex;align-items:center;gap:16px;height:36px}
.topbar-domain{font-weight:600;color:var(--text);letter-spacing:.01em;font-variant-numeric:tabular-nums}
.topbar-note{flex:1;text-align:center;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-actions{display:flex;align-items:center;gap:12px}
.topbar-btn{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border:1px solid var(--line);border-radius:999px;color:var(--text-2);
  font-size:12px;transition:color .2s,border-color .2s,background .2s;
}
.topbar-btn:hover{color:var(--primary);border-color:rgba(255,90,60,.5);background:rgba(255,90,60,.08)}
.topbar-link{color:var(--text-3);font-size:12px;transition:color .2s}
.topbar-link:hover{color:var(--primary)}

/* ---------- 主导航 ---------- */
.nav-wrap{background:rgba(14,12,20,.92);backdrop-filter:blur(0);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),#FF8A5B);
  color:#1A0E0A;font-weight:800;font-size:15px;letter-spacing:.02em;
}
.brand-text{font-weight:700;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;padding:8px 14px;border-radius:999px;
  font-size:14.5px;color:var(--text-2);transition:color .2s,background .2s;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--primary);background:rgba(255,90,60,.12);font-weight:600}
.nav-cta{margin-left:12px}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:transparent;color:var(--text);
  cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .2s,color .2s,border-color .2s,transform .2s,box-shadow .2s;
}
.btn-primary{background:var(--primary);color:#1A0E0A;box-shadow:0 8px 20px rgba(255,90,60,.18)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,90,60,.28)}
.btn-primary:active{background:var(--primary-active);transform:translateY(0)}
.btn-ghost{border-color:var(--line);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-weight:600;font-size:14.5px;
}
.btn-text span{transition:transform .2s}
.btn-text:hover span{transform:translateX(3px)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ---------- 通用 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--accent);letter-spacing:.02em;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.h1{font-size:clamp(30px,4.4vw,50px);line-height:1.15;font-weight:700;letter-spacing:-.01em}
.h2{font-size:clamp(24px,3vw,36px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.h3{font-size:20px;line-height:1.4;font-weight:600}
.lead{font-size:17px;line-height:1.85;color:var(--text-2)}
.muted{color:var(--text-2)}
.muted-3{color:var(--text-3);font-size:13.5px}
.section{padding-block:96px}
.section-light{background:var(--bg-light);color:var(--ink)}
.section-light .lead,.section-light .muted{color:var(--ink-2)}
.section-light .h2,.section-light .h3{color:var(--ink)}
.divider{height:1px;background:var(--line);border:0;margin:0}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(46,230,168,.12);color:var(--accent);
}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12.5px;border:1px solid var(--line);color:var(--text-2);
}
.section-light .tag{border-color:var(--line-dark);color:var(--ink-2)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(14,12,20,.95) 0%,rgba(14,12,20,.88) 45%,rgba(14,12,20,.72) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-60px;width:420px;height:420px;
  border:1px solid rgba(255,90,60,.22);border-radius:50% 50% 0 0;
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding-block:72px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;flex-wrap:wrap}
.crumb a{color:var(--text-2);transition:color .2s}
.crumb a:hover{color:var(--primary)}
.hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:56px;align-items:end}
.hero-sub{margin-top:18px;max-width:620px}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.metric-row{display:flex;gap:16px;margin-top:40px;flex-wrap:wrap}
.metric{
  flex:1 1 180px;background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:18px 20px;
}
.metric-num{
  font-size:26px;font-weight:700;font-variant-numeric:tabular-nums;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--text);
}
.metric-num em{font-style:normal;font-size:14px;color:var(--accent);margin-left:4px}
.metric-label{font-size:13px;color:var(--text-3);margin-top:4px}
.hero-side{
  background:var(--surface-1);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow);
}
.hero-side-title{font-size:14px;color:var(--text-3);margin-bottom:14px}
.hero-side li{display:flex;gap:12px;padding:12px 0;border-top:1px solid var(--line)}
.hero-side li:first-child{border-top:0;padding-top:0}
.hero-side .num{
  width:26px;height:26px;flex:0 0 26px;border-radius:8px;display:grid;place-items:center;
  background:rgba(255,200,87,.14);color:var(--gold);font-size:13px;font-weight:700;
  font-family:ui-monospace,monospace;
}
.hero-side .txt{font-size:14px;line-height:1.65;color:var(--text-2)}
.hero-side .txt strong{color:var(--text);font-weight:600}

/* ---------- 主体两栏 ---------- */
.layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:48px;align-items:start}
.side-index{position:sticky;top:124px}
.side-index-title{font-size:13px;color:var(--text-3);margin-bottom:14px;letter-spacing:.02em}
.index-link{
  display:block;padding:10px 0 10px 16px;font-size:14.5px;color:var(--text-2);
  border-left:2px solid var(--line);transition:color .2s,border-color .2s,padding-left .2s;
}
.index-link:hover{color:var(--text);padding-left:20px}
.index-link.is-current{color:var(--primary);border-color:var(--primary);font-weight:600}
.side-card{
  margin-top:28px;padding:20px;border-radius:var(--radius-card);
  background:var(--surface-1);border:1px solid var(--line);
}
.side-card p{font-size:13.5px;color:var(--text-2);line-height:1.7}
.side-card .h4{color:var(--text);font-size:15px;font-weight:700;margin-bottom:8px}

/* ---------- 步骤条目 ---------- */
.step-list{display:flex;flex-direction:column;gap:24px}
.step-card{
  display:grid;grid-template-columns:240px minmax(0,1fr);gap:28px;
  background:var(--surface-1);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;transition:border-color .2s,transform .2s,box-shadow .2s;
}
.step-card:hover{border-color:rgba(255,90,60,.35);transform:translateY(-3px);box-shadow:var(--shadow)}
.step-media{
  position:relative;border-radius:var(--radius-img);overflow:hidden;
  aspect-ratio:4/3;background:var(--surface-2);
}
.step-media img{width:100%;height:100%;object-fit:cover}
.step-body{display:flex;flex-direction:column;gap:12px}
.step-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.step-no{
  font-family:ui-monospace,monospace;font-size:13px;font-weight:700;color:var(--primary);
  background:rgba(255,90,60,.12);border-radius:999px;padding:3px 12px;
}
.step-title{font-size:20px;font-weight:600;line-height:1.4}
.step-desc{color:var(--text-2);font-size:15px}
.step-tags{display:flex;gap:8px;flex-wrap:wrap}
.step-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:auto;flex-wrap:wrap}
.done-note{font-size:13px;color:var(--text-3)}
.done-note strong{color:var(--accent);font-weight:600}

/* ---------- 卡片网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.device-card{
  background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:0 1px 2px rgba(14,12,20,.04);transition:transform .2s,box-shadow .2s;
}
.device-card:hover{transform:translateY(-3px);box-shadow:0 18px 36px -18px rgba(14,12,20,.28)}
.device-media{aspect-ratio:16/9;background:#EFEBF7;overflow:hidden}
.device-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.device-card:hover .device-media img{transform:scale(1.03)}
.device-body{padding:22px}
.device-body h3{font-size:19px;font-weight:700;color:var(--ink)}
.device-body p{margin-top:8px;font-size:14.5px;color:var(--ink-2)}
.device-body .tag{margin-top:16px}

/* ---------- 对照清单 ---------- */
.compare{background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius-card);overflow:hidden}
.compare-head{
  display:grid;grid-template-columns:1.1fr 1.4fr 1.1fr;gap:16px;
  padding:16px 24px;background:#F1ECF9;font-size:13px;font-weight:700;color:var(--ink-2);
}
.compare-row{
  display:grid;grid-template-columns:1.1fr 1.4fr 1.1fr;gap:16px;
  padding:20px 24px;border-top:1px solid var(--line-dark);font-size:14.5px;color:var(--ink-2);
  transition:background .2s;
}
.compare-row:hover{background:#FBF9FE}
.compare-row strong{color:var(--ink);font-weight:600}
.compare-row .ok{color:#0E8A63;font-weight:600}

/* ---------- 数据条 ---------- */
.data-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  margin-top:32px;
}
.data-cell{background:var(--surface-1);padding:24px}
.data-cell .num{
  font-family:ui-monospace,monospace;font-size:30px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--text);
}
.data-cell .num span{font-size:15px;color:var(--accent);margin-left:3px}
.data-cell .lb{font-size:13.5px;color:var(--text-3);margin-top:6px}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:14px;max-width:920px}
.faq details{
  background:var(--surface-1);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:0 24px;transition:border-color .2s,background .2s;
}
.faq details[open]{border-color:rgba(255,90,60,.35);background:var(--surface-2)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--text);
}
.faq summary::-webkit-details-marker{display:none}
.faq .icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--primary);font-size:16px;line-height:1;
  transition:transform .22s,background .22s;
}
.faq details[open] .icon{transform:rotate(45deg);background:rgba(255,90,60,.14)}
.faq .answer{
  padding:0 0 22px;max-width:780px;color:var(--text-2);font-size:15px;line-height:1.85;
  border-top:1px solid var(--line);padding-top:18px;margin-top:-2px;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:22px;
  background:linear-gradient(115deg,#FF5A3C 0%,#FF7A4A 58%,#FFA05E 100%);
  color:#200F09;padding:48px;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:320px;height:320px;
  border:36px solid rgba(255,255,255,.14);border-radius:50%;
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr .9fr;gap:48px;align-items:center}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.25}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.8;color:rgba(32,15,9,.82);max-width:520px}
.form-card{background:rgba(255,255,255,.94);border-radius:var(--radius-card);padding:26px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;font-weight:600;color:#3A241C;margin-bottom:6px}
.field input,.field textarea{
  width:100%;height:48px;border-radius:12px;border:1px solid rgba(32,15,9,.16);
  background:#fff;padding:0 14px;color:#2A1710;transition:border-color .2s,box-shadow .2s;
}
.field textarea{height:88px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{
  outline:none;border-color:#2EE6A8;box-shadow:inset 3px 0 0 #FF5A3C;
}
.form-hint{font-size:12.5px;color:#6B5850;margin-top:10px;line-height:1.6}

/* ---------- 页脚 ---------- */
.site-footer{background:#0A0910;border-top:1px solid var(--line);padding-top:72px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px}
.footer-brand .brand-text{font-weight:700;font-size:16px}
.footer-desc{margin-top:16px;font-size:13.5px;line-height:1.8;color:var(--text-3);max-width:320px}
.footer-title{font-size:14px;font-weight:600;color:var(--text-2);margin-bottom:16px}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-link{font-size:14px;color:var(--text-3);transition:color .2s,transform .2s;display:inline-block}
.footer-link:hover{color:var(--primary);transform:translateX(2px)}
.footer-contact{font-size:13.5px;color:var(--text-3);line-height:1.9}
.footer-contact strong{color:var(--text-2);font-weight:600}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:24px 0 32px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.footer-copy{font-size:13px;color:var(--text-3)}
.footer-legal{font-size:13px;color:var(--text-3);max-width:640px;line-height:1.7}
.to-top{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;height:34px;padding:0 16px;transition:color .2s,border-color .2s;
}
.to-top:hover{color:var(--primary);border-color:rgba(255,90,60,.5)}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .layout{grid-template-columns:1fr;gap:32px}
  .side-index{position:static}
  .side-index .index-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px}
  .index-link{border-left:0;border-bottom:2px solid var(--line);white-space:nowrap;padding:8px 4px}
  .index-link:hover{padding-left:4px}
  .index-link.is-current{border-color:var(--primary)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:32px;align-items:start}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .data-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-grid{grid-template-columns:1fr;gap:28px}
  .step-card{grid-template-columns:1fr;gap:20px}
  .step-media{aspect-ratio:16/9}
  .compare-head{display:none}
  .compare-row{grid-template-columns:1fr;gap:6px;padding:20px}
  .compare-row div::before{content:attr(data-label);display:block;font-size:12px;color:var(--ink-2);opacity:.65}
}
@media (max-width:820px){
  .main-nav{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:4px;padding:16px 24px 22px;
    background:var(--surface-2);border-bottom:1px solid var(--line);
  }
  .main-nav.is-open{display:flex}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .nav-inner{position:relative}
  .topbar-note{display:none}
}
@media (max-width:640px){
  .container{padding-inline:16px}
  .section{padding-block:56px}
  .hero-inner{padding-block:48px}
  .grid-3{grid-template-columns:1fr}
  .data-strip{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand-col{grid-column:1 / -1}
  .cta-band{padding:28px 22px}
  .hero-actions .btn{width:100%}
  .step-card{padding:18px}
  .faq details{padding:0 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .step-card:hover,.device-card:hover,.btn-primary:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --bg:#0E0C14;
  --surface-1:#16121F;
  --surface-2:#1F1A2B;
  --bg-light:#F7F5FB;
  --primary:#FF5A3C;
  --primary-hover:#FF7355;
  --primary-active:#E8462B;
  --accent:#2EE6A8;
  --gold:#FFC857;
  --line:rgba(255,255,255,.08);
  --line-dark:rgba(14,12,20,.08);
  --text:#F5F2FA;
  --text-2:#A79FBB;
  --text-3:#6F6885;
  --ink:#16121F;
  --ink-2:#5A5468;
  --r-card:18px;
  --r-img:16px;
  --r-btn:12px;
  --shadow-card:0 1px 2px rgba(0,0,0,.4),0 12px 32px -12px rgba(0,0,0,.6);
  --shadow-lift:0 20px 44px -20px rgba(0,0,0,.78);
  --shadow-light:0 1px 2px rgba(20,16,32,.06),0 16px 34px -20px rgba(20,16,32,.35);
  --container:1240px;
  --t:200ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
strong{font-weight:700;}

.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.numpad{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;}

/* 顶部信息条 */
.info-bar{
  background:var(--surface-2);
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--text-2);
}
.info-inner{
  min-height:38px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.info-domain{
  color:var(--text-2);
  letter-spacing:.02em;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.info-note{color:var(--text-3);}
.info-actions{display:flex;align-items:center;gap:14px;}
.info-btn{
  padding:4px 12px;border:1px solid var(--line);border-radius:999px;
  color:var(--text);transition:border-color var(--t),color var(--t);
}
.info-btn:hover{border-color:var(--primary);color:var(--primary);}
.info-link{color:var(--text-2);transition:color var(--t);}
.info-link:hover{color:var(--primary);}

/* 头部与导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#0E0C14;
  border-bottom:1px solid var(--line);
}
.header-main{
  min-height:72px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--primary);color:#1A0E0A;
  display:grid;place-items:center;
  font-weight:800;font-size:15px;letter-spacing:.04em;
  transition:background var(--t),transform var(--t);
}
.brand:hover .brand-mark{background:var(--primary-hover);transform:translateY(-1px);}
.brand-text{font-size:17px;font-weight:700;color:var(--text);white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  padding:9px 15px;border-radius:10px;
  font-size:15px;color:var(--text-2);
  border:1px solid transparent;
  transition:color var(--t),background var(--t),border-color var(--t);
}
.nav-link:hover{color:var(--text);background:var(--surface-1);}
.nav-link.is-active{
  color:var(--primary);
  background:rgba(255,90,60,.10);
  border-color:rgba(255,90,60,.35);
  font-weight:600;
}
.header-cta{flex-shrink:0;}
.hamburger{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);place-items:center;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--text);margin:3px auto;transition:transform var(--t),opacity var(--t);}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--primary);color:#180D09;}
.btn-primary:hover{background:var(--primary-hover);box-shadow:0 8px 20px rgba(255,90,60,.25);transform:translateY(-2px);}
.btn-primary:active{background:var(--primary-active);transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);}
.btn-ink{background:#180D09;color:#FFF3EE;}
.btn-ink:hover{background:#2A1712;transform:translateY(-2px);}
.btn-line-ink{background:transparent;border-color:rgba(26,14,10,.35);color:#1A0E0A;}
.btn-line-ink:hover{border-color:#1A0E0A;background:rgba(26,14,10,.08);}
.btn-arrow::after{content:"→";transition:transform var(--t);}
.btn-arrow:hover::after{transform:translateX(3px);}

a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;
}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  padding:78px 0 74px;
  background-color:#0E0C14;
  background-image:linear-gradient(180deg,rgba(14,12,20,.90) 0%,rgba(14,12,20,.95) 58%,#0E0C14 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;right:-140px;top:-110px;
  width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(255,90,60,.22);
  box-shadow:0 0 0 42px rgba(255,90,60,.04);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:-10%;bottom:-60px;width:60%;height:220px;
  background:linear-gradient(90deg,transparent,rgba(46,230,168,.10),transparent);
  transform:rotate(-9deg);pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(46,230,168,.10);
  border:1px solid rgba(46,230,168,.32);
  color:var(--accent);font-size:13px;letter-spacing:.02em;
}
.hero h1{
  margin-top:20px;
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.16;font-weight:700;
}
.hero-sub{
  margin-top:16px;
  font-size:clamp(17px,2vw,20px);
  color:var(--text);font-weight:600;
}
.hero-lead{
  margin-top:14px;max-width:620px;
  color:var(--text-2);font-size:15.5px;line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.metric-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  margin-top:40px;
}
.metric-item{border-top:1px solid var(--line);padding-top:14px;}
.metric-num{
  font-size:27px;font-weight:700;color:var(--accent);
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.metric-num small{font-size:14px;margin-left:3px;color:var(--text-2);font-weight:500;}
.metric-item p{font-size:13px;color:var(--text-3);line-height:1.6;margin-top:2px;}
.hero-visual{position:relative;}
.hero-shot{
  border-radius:20px;overflow:hidden;border:1px solid var(--line);
  background:var(--surface-1);box-shadow:var(--shadow-card);
}
.hero-shot img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.float-card{
  position:absolute;left:-18px;bottom:-22px;
  width:250px;padding:16px 18px;
  background:var(--surface-2);
  border:1px solid rgba(46,230,168,.28);
  border-radius:16px;box-shadow:var(--shadow-lift);
}
.float-label{display:block;font-size:12px;color:var(--text-3);}
.float-card strong{display:block;font-size:19px;color:var(--accent);margin-top:2px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}
.float-note{display:block;font-size:12px;color:var(--text-2);line-height:1.6;margin-top:6px;}

/* 板块通用 */
.section{padding:88px 0;}
.section-light{background:var(--bg-light);color:var(--ink);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{
  font-size:clamp(24px,3vw,36px);line-height:1.25;font-weight:700;
}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15.5px;}
.section-light .section-head p{color:var(--ink-2);}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;font-size:12.5px;
  background:rgba(46,230,168,.10);border:1px solid rgba(46,230,168,.30);color:var(--accent);
}
.section-light .tag{background:rgba(14,12,20,.05);border-color:var(--line-dark);color:var(--ink-2);}

/* 标签条 */
.tabs{
  display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;margin-bottom:34px;
  scrollbar-width:thin;
}
.tabs::-webkit-scrollbar{height:6px;}
.tabs::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:99px;}
.tab{
  flex:0 0 auto;padding:10px 20px;border-radius:999px;
  border:1px solid var(--line);color:var(--text-2);font-size:14px;
  transition:background var(--t),color var(--t),border-color var(--t);
}
.tab:hover{color:var(--text);border-color:rgba(255,90,60,.35);}
.tab.is-active{background:var(--primary);border-color:var(--primary);color:#180D09;font-weight:700;}

/* 卡片网格 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:var(--surface-1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.card:hover{transform:translateY(-3px);border-color:rgba(255,90,60,.35);box-shadow:var(--shadow-lift);}
.card-media{position:relative;overflow:hidden;background:var(--surface-2);}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 350ms ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-badge{
  position:absolute;left:14px;top:14px;
  padding:5px 12px;border-radius:999px;font-size:12px;
  background:rgba(14,12,20,.80);border:1px solid rgba(46,230,168,.40);color:var(--accent);
}
.card-body{padding:22px 24px 20px;display:flex;flex-direction:column;flex:1;}
.card-title{
  font-size:19px;line-height:1.45;font-weight:600;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-desc{
  margin-top:10px;font-size:14.5px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-tags{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap;}
.card-meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.card-meta .arrow{color:var(--primary);transition:transform var(--t);}
.card:hover .card-meta .arrow{transform:translateX(4px);}

/* 数据条 */
.stats-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding:32px;border:1px solid var(--line);border-radius:24px;
  background:var(--surface-1);
}
.stat-num{
  font-size:32px;font-weight:700;color:var(--text);
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.stat-num span{font-size:14px;color:var(--text-2);font-weight:500;margin-left:4px;}
.stat p{font-size:13.5px;color:var(--text-2);margin-top:4px;}
.bar{display:block;margin-top:14px;height:4px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden;}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),rgba(46,230,168,.35));border-radius:99px;}

/* FAQ */
.faq-list{display:grid;gap:16px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line-dark);border-radius:var(--r-card);
  box-shadow:var(--shadow-light);overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item[open]{border-color:rgba(255,90,60,.40);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary h3{font-size:18px;font-weight:600;color:var(--ink);line-height:1.6;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:24px;line-height:1;color:var(--ink-2);
  transition:transform var(--t),color var(--t);
}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--primary);}
.faq-item[open] summary{box-shadow:inset 4px 0 0 var(--primary);}
.faq-a{padding:0 24px 22px;color:var(--ink-2);font-size:15px;line-height:1.9;max-width:66ch;}

/* CTA 带 */
.cta-wrap{padding:0 0 88px;}
.cta-band{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.35fr .85fr;gap:36px;align-items:center;
  padding:46px 48px;border-radius:26px;
  background:linear-gradient(118deg,#FF5A3C 0%,#FF7A4D 60%,#FFC857 145%);
  color:#1A0E0A;
}
.cta-band::after{
  content:"";position:absolute;right:-40px;top:-90px;width:280px;height:320px;
  background:rgba(255,255,255,.16);transform:rotate(18deg);pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;position:relative;z-index:2;}
.cta-band p{margin-top:12px;font-size:15.5px;line-height:1.8;max-width:640px;position:relative;z-index:2;color:rgba(26,14,10,.86);}
.cta-actions{display:flex;flex-direction:column;gap:12px;position:relative;z-index:2;}
.cta-actions .btn{width:100%;}

/* 页脚 */
.site-footer{background:#0A0910;border-top:1px solid var(--line);padding:72px 0 28px;}
.site-footer .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;font-size:14px;}
.footer-brand .brand-text{font-size:16px;font-weight:700;color:var(--text);}
.footer-desc{font-size:13.5px;color:var(--text-3);line-height:1.85;max-width:340px;}
.footer-title{font-size:14px;font-weight:600;color:var(--accent);margin:0 0 14px;letter-spacing:.02em;}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-link{font-size:14px;color:var(--text-2);transition:color var(--t),transform var(--t);display:inline-block;}
.footer-link:hover{color:var(--primary);transform:translateX(2px);}
.footer-contact{font-size:13.5px;color:var(--text-2);line-height:2;}
.footer-contact strong{color:var(--text);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
}
.footer-copy{font-size:13px;color:var(--text-2);}
.footer-legal{font-size:13px;color:var(--text-3);line-height:1.7;max-width:560px;}
.to-top{font-size:13px;color:var(--text-2);transition:color var(--t);}
.to-top:hover{color:var(--primary);}

/* 响应式 */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero{padding:64px 0 60px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(3,1fr);gap:28px;}
  .cta-band{grid-template-columns:1fr;padding:38px 34px;}
  .section{padding:72px 0;}
}
@media (max-width:768px){
  .wrap{padding:0 16px;}
  .site-footer .container{padding:0 16px;}
  .info-note{display:none;}
  .hamburger{display:grid;}
  .header-cta{display:none;}
  .main-nav{
    position:fixed;top:0;right:0;z-index:80;
    width:82%;max-width:340px;height:100vh;
    flex-direction:column;align-items:stretch;gap:8px;
    padding:88px 20px 32px;
    background:var(--surface-1);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform 240ms ease;
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{padding:14px 16px;font-size:16px;border-radius:12px;}
  body.nav-locked{overflow:hidden;}
  .hero h1{font-size:clamp(27px,7vw,36px);}
  .hero-actions .btn{flex:1 1 100%;}
  .metric-row{grid-template-columns:repeat(3,1fr);gap:14px;}
  .metric-num{font-size:22px;}
  .float-card{position:static;width:100%;margin-top:16px;}
  .card-grid{grid-template-columns:1fr;}
  .stats-band{grid-template-columns:repeat(2,1fr);padding:24px;gap:18px;}
  .faq-item summary{padding:18px;}
  .faq-a{padding:0 18px 20px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-wrap{padding:0 0 72px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .section{padding:56px 0;}
  .hero{padding:52px 0 48px;}
  .metric-row{grid-template-columns:1fr;gap:12px;}
  .stats-band{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:30px 22px;border-radius:20px;}
  .info-actions{gap:10px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;animation:none !important;}
  .card:hover{transform:none;}
}