/* roulang page: index */
:root{
  --bg:#070B16;
  --bg-alt:#0B1120;
  --bg-foot:#050810;
  --glass:rgba(20,32,58,.52);
  --glass-line:rgba(122,196,255,.14);
  --cyan:#2FD8C6;
  --cyan-deep:#1FA99B;
  --violet:#7A6BFF;
  --amber:#FFB454;
  --text:#E6EDF7;
  --text-2:#9DAFC8;
  --text-3:#6B7A94;
  --line:rgba(157,175,200,.14);
  --r-lg:18px;
  --r-card:22px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-idle:0 8px 24px rgba(3,7,18,.45);
  --sh-hover:0 18px 44px rgba(47,216,198,.16);
  --glow:0 0 0 1px rgba(47,216,198,.35), 0 10px 34px rgba(47,216,198,.26);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:220ms;
  --c-max:1200px;
  --f-num:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease);}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:var(--c-max);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;position:relative;}
.section--alt{background:var(--bg-alt);}
.glow-dot{position:absolute;border-radius:50%;filter:blur(120px);pointer-events:none;z-index:0;}
.glow-dot--cyan{background:rgba(47,216,198,.16);}
.glow-dot--violet{background:rgba(122,107,255,.14);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;position:relative;z-index:1;}
.sec-head h2{font-size:34px;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
.sec-head p{color:var(--text-2);font-size:15px;margin-top:6px;}
.link-more{color:var(--cyan);font-size:14px;white-space:nowrap;display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{color:#7ff0e4;}
.tag{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--r-pill);font-size:12px;letter-spacing:.04em;background:rgba(47,216,198,.10);color:var(--cyan);border:1px solid rgba(47,216,198,.26);}
.tag--amber{background:rgba(255,180,84,.12);color:var(--amber);border-color:rgba(255,180,84,.3);}
.tag--violet{background:rgba(122,107,255,.14);color:#b0a6ff;border-color:rgba(122,107,255,.3);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 26px;border-radius:var(--r-sm);font-size:15px;font-weight:600;transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);}
.btn-primary{background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));color:#04211d;box-shadow:var(--glow);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,216,198,.5),0 16px 40px rgba(47,216,198,.3);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:var(--glass);border:1px solid var(--glass-line);color:var(--text);backdrop-filter:blur(18px) saturate(140%);}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(47,216,198,.4);color:#bff7f0;}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:10px 18px;font-size:13px;}
.btn[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:transparent;transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease);border-bottom:1px solid transparent;}
.site-header.is-solid{background:rgba(7,11,22,.86);backdrop-filter:blur(18px) saturate(140%);border-bottom-color:var(--line);}
.nav-top{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:flex;align-items:baseline;gap:8px;flex-shrink:0;}
.brand-mark{font-size:20px;font-weight:800;letter-spacing:.01em;color:var(--text);}
.brand-sub{font-size:12px;color:var(--cyan);letter-spacing:.06em;}
.nav-search{flex:1;max-width:340px;margin-left:auto;display:flex;align-items:center;gap:10px;padding:8px 14px;border-radius:var(--r-pill);background:var(--glass);border:1px solid var(--glass-line);transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);}
.nav-search i{color:var(--text-3);font-size:13px;}
.nav-search input{flex:1;min-width:0;background:none;border:0;font-size:13px;color:var(--text);outline:none;}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search:focus-within{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(47,216,198,.18);}
.nav-cta{flex-shrink:0;}
.nav-channels{border-top:1px solid var(--line);}
.channel-row{display:flex;align-items:center;gap:28px;height:50px;overflow-x:auto;scrollbar-width:none;}
.channel-row::-webkit-scrollbar{display:none;}
.channel{position:relative;font-size:14px;color:var(--text-2);padding:4px 0;white-space:nowrap;}
.channel::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--cyan);transform:scaleX(0);transition:transform var(--dur) var(--ease);}
.channel:hover{color:var(--text);}
.channel.is-active{color:var(--cyan);}
.channel.is-active::after{transform:scaleX(1);}

/* ---------- hero ---------- */
.hero{padding:72px 0 96px;position:relative;overflow:hidden;}
.hero .glow-dot--cyan{width:520px;height:520px;top:-160px;left:-140px;}
.hero .glow-dot--violet{width:460px;height:460px;bottom:-200px;right:-120px;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;position:relative;z-index:1;}
.hero h1{font-size:54px;line-height:1.12;font-weight:800;letter-spacing:-.01em;margin:20px 0 16px;}
.hero-sub{font-size:17px;color:var(--text-2);margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.trust-row{display:flex;flex-wrap:wrap;gap:12px 28px;border-top:1px solid var(--line);padding-top:20px;}
.trust-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);}
.trust-item i{color:var(--cyan);font-size:13px;}
.phone-card{position:relative;aspect-ratio:9/16;max-height:600px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--glass-line);box-shadow:0 24px 60px rgba(3,7,18,.6);background:var(--glass);}
.phone-card img{width:100%;height:100%;object-fit:cover;}
.phone-card::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(7,11,22,.92) 8%,rgba(7,11,22,.12) 58%);}
.play-btn{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));color:#04211d;font-size:18px;box-shadow:var(--glow);z-index:2;transition:transform var(--dur) var(--ease);}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06);}
.duration{position:absolute;top:16px;right:16px;z-index:2;padding:5px 11px;border-radius:var(--r-pill);background:rgba(5,8,16,.72);border:1px solid var(--glass-line);font-size:12px;color:var(--text-2);font-family:var(--f-num);}
.phone-cap{position:absolute;left:20px;right:20px;bottom:20px;z-index:2;}
.phone-cap strong{display:block;font-size:17px;font-weight:600;margin-bottom:4px;}
.phone-cap span{font-size:13px;color:var(--text-2);}

/* ---------- shorts grid ---------- */
.shorts-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative;z-index:1;}
.short-card{display:block;border-radius:var(--r-card);overflow:hidden;background:var(--glass);border:1px solid var(--glass-line);backdrop-filter:blur(18px) saturate(140%);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-idle);transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);}
.short-card:hover{transform:translateY(-4px);border-color:rgba(47,216,198,.5);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-hover);}
.short-cover{position:relative;aspect-ratio:9/16;overflow:hidden;}
.short-cover img{width:100%;height:100%;object-fit:cover;transition:transform 260ms var(--ease);}
.short-card:hover .short-cover img{transform:scale(1.04);}
.short-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(7,11,22,.9),rgba(7,11,22,.05) 55%);}
.badge-hot{position:absolute;top:12px;left:12px;z-index:2;padding:4px 10px;border-radius:var(--r-pill);background:rgba(255,180,84,.16);border:1px solid rgba(255,180,84,.36);color:var(--amber);font-size:11px;letter-spacing:.04em;}
.short-time{position:absolute;bottom:12px;right:12px;z-index:2;font-size:11px;font-family:var(--f-num);color:var(--text-2);background:rgba(5,8,16,.7);padding:3px 8px;border-radius:var(--r-pill);}
.short-body{padding:16px;}
.short-body h3{font-size:17px;line-height:1.45;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:49px;}
.short-body .meta{margin-top:12px;font-size:12px;color:var(--text-3);display:flex;align-items:center;gap:8px;}

/* ---------- checklist ---------- */
.checklist{border-top:1px solid var(--line);position:relative;z-index:1;}
.check-item{display:flex;align-items:center;gap:24px;padding:24px 8px;border-bottom:1px solid var(--line);position:relative;transition:transform var(--dur) var(--ease);}
.check-item::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;background:var(--cyan);opacity:0;transition:opacity var(--dur) var(--ease);}
.check-item:hover{transform:translateX(4px);}
.check-item:hover::before{opacity:1;}
.check-num{font-family:var(--f-num);font-size:30px;font-weight:700;color:var(--cyan);opacity:.9;min-width:64px;}
.check-text{flex:1;}
.check-text h3{font-size:17px;font-weight:600;margin-bottom:4px;}
.check-text p{font-size:14px;color:var(--text-2);line-height:1.7;}
.check-item > i{color:var(--text-3);transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);}
.check-item:hover > i{color:var(--cyan);transform:translateX(4px);}

/* ---------- news (CMS) ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;position:relative;z-index:1;}
.news-card{display:flex;flex-direction:column;padding:24px;border-radius:var(--r-lg);background:var(--glass);border:1px solid var(--glass-line);backdrop-filter:blur(18px) saturate(140%);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-idle);transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);}
.news-card:hover{transform:translateY(-4px);border-color:rgba(47,216,198,.45);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-hover);}
.news-head{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.news-card h3{font-size:17px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:51px;}
.news-card p{font-size:14px;color:var(--text-2);line-height:1.75;margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:18px;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-3);}
.news-foot span i{margin-right:6px;}
.news-more{color:var(--cyan);font-size:13px;display:inline-flex;align-items:center;gap:6px;}
.empty-state{display:flex;flex-direction:column;align-items:center;gap:14px;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--r-lg);color:var(--text-2);text-align:center;}
.empty-state i{font-size:26px;color:var(--text-3);}
.empty-state p{font-size:14px;}

/* ---------- reviews ---------- */
.review-band{position:relative;z-index:1;}
.review-scroll{display:flex;gap:18px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x mandatory;scrollbar-width:none;}
.review-scroll::-webkit-scrollbar{display:none;}
.review-card{flex:0 0 260px;scroll-snap-align:start;padding:20px;border-radius:var(--r-lg);background:var(--glass);border:1px solid var(--glass-line);backdrop-filter:blur(18px) saturate(140%);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,rgba(47,216,198,.35),rgba(122,107,255,.35));display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:var(--text);}
.review-top strong{display:block;font-size:14px;font-weight:600;}
.stars{color:var(--amber);font-size:11px;letter-spacing:2px;}
.review-card p{font-size:14px;color:var(--text-2);line-height:1.75;}

/* ---------- CTA ---------- */
.cta-band{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--glass-line);background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(7,11,22,.9),rgba(7,11,22,.72));}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:46px 44px;}
.cta-inner h2{font-size:28px;font-weight:700;line-height:1.3;margin-bottom:8px;}
.cta-inner p{font-size:14px;color:var(--text-2);}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;position:relative;z-index:1;}
.faq-item{border:1px solid var(--glass-line);border-radius:var(--r-lg);background:var(--glass);backdrop-filter:blur(18px) saturate(140%);overflow:hidden;transition:border-color var(--dur) var(--ease);}
.faq-item.is-open{border-color:rgba(47,216,198,.42);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 24px;text-align:left;font-size:17px;font-weight:600;color:var(--text);}
.faq-q i{color:var(--cyan);transition:transform var(--dur) var(--ease);font-size:14px;}
.faq-item.is-open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--dur) ease-out;}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-foot);border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px;}
.footer-grid h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:18px;letter-spacing:.02em;}
.footer-grid p{font-size:13px;color:var(--text-3);line-height:1.8;}
.footer-brand .brand{margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:13px;color:var(--text-2);}
.footer-links a:hover{color:var(--cyan);}
.footer-bottom{margin-top:48px;border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12px;color:var(--text-3);}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .container{padding:0 28px;}
  .hero h1{font-size:46px;}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero{padding:56px 0 72px;}
  .hero h1{font-size:40px;}
  .shorts-grid{grid-template-columns:repeat(3,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .news-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 28px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:28px;}
  .sec-head h2{font-size:26px;}
  .nav-top{gap:14px;}
  .nav-search{max-width:none;}
  .shorts-grid{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:10px;scrollbar-width:none;}
  .shorts-grid::-webkit-scrollbar{display:none;}
  .short-card{flex:0 0 68%;scroll-snap-align:start;}
  .hero-actions .btn{flex:1 1 auto;justify-content:center;}
  .check-num{font-size:24px;min-width:48px;}
  .cta-inner h2{font-size:22px;}
  .cta-inner .btn{width:100%;justify-content:center;}
}
@media (max-width:520px){
  .brand-sub{display:none;}
  .nav-cta{padding:10px 16px;font-size:13px;}
  .hero h1{font-size:32px;line-height:1.2;}
  .hero-sub{font-size:15px;}
  .phone-card{aspect-ratio:4/5;max-height:56vh;}
  .short-card{flex:0 0 78%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;}
  .faq-q{font-size:16px;padding:18px 18px;}
  .faq-a p{padding:0 18px 18px;}
}

/* roulang page: article */
:root{
  --bg:#070B16;
  --bg-alt:#0B1120;
  --bg-deep:#050810;
  --glass:rgba(20,32,58,0.52);
  --glass-line:rgba(122,196,255,0.14);
  --cyan:#2FD8C6;
  --cyan-deep:#1FA99B;
  --violet:#7A6BFF;
  --amber:#FFB454;
  --text:#E6EDF7;
  --text-2:#9DAFC8;
  --text-3:#6B7A94;
  --line:rgba(157,175,200,0.14);
  --r-lg:18px;
  --r-card:22px;
  --r-sm:12px;
  --glow:0 0 0 1px rgba(47,216,198,0.35),0 10px 34px rgba(47,216,198,0.26);
  --shadow-1:0 10px 30px rgba(0,0,0,0.34);
  --shadow-2:0 18px 44px rgba(47,216,198,0.16);
  --ease:cubic-bezier(0.22,0.61,0.36,1);
  --t:220ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(560px 420px at 12% -6%,rgba(47,216,198,0.14),transparent 70%),
    radial-gradient(520px 420px at 92% 8%,rgba(122,107,255,0.12),transparent 72%);
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--t) var(--ease),opacity var(--t) var(--ease);}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,11,22,0.72);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background var(--t) var(--ease),border-color var(--t) var(--ease);
}
.site-header.is-scrolled{background:rgba(5,8,16,0.94);border-bottom-color:var(--line);}
.nav-top{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:inline-flex;align-items:baseline;gap:8px;flex-shrink:0;}
.brand-mark{font-size:19px;font-weight:800;letter-spacing:-0.01em;color:#FFFFFF;}
.brand-sub{font-size:12px;letter-spacing:0.04em;color:var(--text-3);}
.brand:hover .brand-mark{color:var(--cyan);}
.nav-search{
  display:flex;align-items:center;gap:10px;
  flex:1;max-width:340px;
  height:40px;padding:0 14px;
  background:rgba(20,32,58,0.5);
  border:1px solid var(--glass-line);
  border-radius:var(--r-sm);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.nav-search i{color:var(--text-3);font-size:13px;}
.nav-search input{
  flex:1;background:transparent;border:0;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search:focus-within{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(47,216,198,0.18);}
.nav-cta{margin-left:auto;flex-shrink:0;}
.nav-channels{border-top:1px solid var(--line);}
.channel-row{display:flex;align-items:center;gap:30px;height:52px;overflow-x:auto;scrollbar-width:none;}
.channel-row::-webkit-scrollbar{display:none;}
.channel{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
  padding:4px 0;
}
.channel::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  border-radius:2px;background:var(--cyan);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t) var(--ease);
}
.channel:hover{color:var(--text);}
.channel:hover::after{transform:scaleX(1);}
.channel.is-active{color:var(--cyan);}
.channel.is-active::after{transform:scaleX(1);}

/* ---------- Buttons / chips ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--t) var(--ease),background var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease);
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));
  color:#04120F;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,216,198,0.45),0 14px 38px rgba(47,216,198,0.34);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--glass);
  border-color:var(--glass-line);
  color:var(--text);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(47,216,198,0.5);color:var(--cyan);}
.btn-ghost:active{transform:translateY(1px);}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  border-radius:999px;
  font-size:12px;letter-spacing:0.04em;
  background:rgba(122,196,255,0.10);
  border:1px solid var(--glass-line);
  color:var(--text-2);
  white-space:nowrap;
}
.chip-amber{color:var(--amber);border-color:rgba(255,180,84,0.32);background:rgba(255,180,84,0.10);}
.chip-cyan{color:var(--cyan);border-color:rgba(47,216,198,0.34);background:rgba(47,216,198,0.10);}
.chip-violet{color:#B4ACFF;border-color:rgba(122,107,255,0.34);background:rgba(122,107,255,0.12);}

/* ---------- Breadcrumb ---------- */
.crumb-bar{padding:26px 0 6px;position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--text-3);
  flex-wrap:nowrap;overflow:hidden;
}
.breadcrumb a{color:var(--text-2);white-space:nowrap;}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb .sep{width:1px;height:12px;background:var(--line);flex-shrink:0;}
.breadcrumb .current{
  color:var(--cyan);
  max-width:44%;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- Article head ---------- */
.article-wrap{position:relative;z-index:2;padding-bottom:8px;}
.article-head{max-width:820px;margin:0 auto;padding:22px 0 30px;}
.article-head h1{
  font-size:44px;line-height:1.22;font-weight:800;letter-spacing:-0.01em;
  margin:16px 0 18px;color:#FFFFFF;
}
.meta-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:13.5px;color:var(--text-3);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.6;}
.head-divider{height:1px;background:var(--line);max-width:820px;margin:0 auto 34px;}

/* ---------- Article body ---------- */
.article-body{
  max-width:720px;
  margin:0 auto;
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  padding:42px 44px;
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.06),0 18px 44px rgba(0,0,0,0.38);
}
.article-body p{margin:0 0 1.4em;color:#D3DDEC;font-size:16px;line-height:1.85;}
.article-body h2{
  position:relative;
  font-size:24px;line-height:1.35;font-weight:700;color:#FFFFFF;
  margin:48px 0 20px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--cyan),var(--violet));
}
.article-body h3{font-size:19px;line-height:1.4;font-weight:600;color:#EAF2FF;margin:32px 0 14px;}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:22px;}
.article-body ul li{list-style:disc;margin:0 0 0.55em;color:#CBD7E8;line-height:1.8;}
.article-body ol li{list-style:decimal;margin:0 0 0.55em;color:#CBD7E8;line-height:1.8;}
.article-body li::marker{color:var(--cyan);}
.article-body blockquote{
  margin:0 0 1.4em;padding:16px 20px;
  border-left:3px solid var(--cyan);
  background:rgba(47,216,198,0.06);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:#C6D5E9;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:14px;margin:26px auto;}
.article-body a{color:var(--cyan);border-bottom:1px solid rgba(47,216,198,0.34);}
.article-body a:hover{border-bottom-color:var(--cyan);}
.article-body strong{color:#FFFFFF;font-weight:600;}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;background:rgba(122,196,255,0.10);
  padding:2px 6px;border-radius:6px;color:#BFE9E2;
}
.article-body pre{
  overflow-x:auto;background:rgba(5,8,16,0.72);
  border:1px solid var(--glass-line);border-radius:12px;
  padding:16px 18px;margin:0 0 1.4em;
}
.article-body pre code{background:none;padding:0;color:#CFE6E2;}
.article-body table{
  width:100%;border-collapse:collapse;margin:0 0 1.4em;
  display:block;overflow-x:auto;font-size:14.5px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:10px 14px;text-align:left;color:#CBD7E8;white-space:nowrap;
}
.article-body th{background:rgba(122,196,255,0.07);color:#EAF2FF;font-weight:600;}
.article-body hr{border:0;height:1px;background:var(--line);margin:36px 0;}
@media (min-width:1024px){
  .article-body > p:first-of-type::first-letter{
    float:left;font-size:52px;line-height:1;font-weight:800;
    color:var(--cyan);margin:8px 12px 0 0;
  }
}

/* ---------- Empty state ---------- */
.empty-state{
  max-width:720px;margin:0 auto;text-align:center;
  background:var(--glass);border:1px dashed var(--glass-line);
  border-radius:var(--r-lg);padding:64px 32px;
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.empty-state i{font-size:34px;color:var(--text-3);margin-bottom:16px;display:block;}
.empty-state p{font-size:18px;font-weight:600;color:var(--text);margin-bottom:8px;}
.empty-state .empty-tip{font-size:14px;font-weight:400;color:var(--text-3);margin-bottom:24px;}

/* ---------- Article foot ---------- */
.article-foot{
  max-width:720px;margin:34px auto 0;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.tag-group{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.action-group{display:flex;align-items:center;gap:12px;}
.icon-btn{
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 16px;border-radius:var(--r-sm);
  background:var(--glass);border:1px solid var(--glass-line);
  color:var(--text-2);font-size:14px;cursor:pointer;
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.icon-btn:hover{transform:translateY(-2px);border-color:rgba(47,216,198,0.5);color:var(--cyan);}
.icon-btn.is-on{color:var(--cyan);border-color:rgba(47,216,198,0.5);box-shadow:0 0 0 3px rgba(47,216,198,0.14);}
.share-tip{font-size:13px;color:var(--amber);opacity:0;transition:opacity var(--t) var(--ease);}
.share-tip.is-show{opacity:1;}

/* ---------- Sections ---------- */
.section{position:relative;z-index:2;padding:72px 0;}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.section-head h2{font-size:30px;line-height:1.25;font-weight:700;color:#FFFFFF;}
.section-head p{font-size:14.5px;color:var(--text-3);margin-top:8px;}
.link-more{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px;white-space:nowrap;}
.link-more:hover{color:var(--cyan);}

/* prev / next */
.duo-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.duo-card{
  display:flex;align-items:center;gap:18px;
  background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-lg);padding:20px 22px;
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.duo-card:hover{transform:translateY(-4px);border-color:rgba(47,216,198,0.5);box-shadow:var(--shadow-2);}
.duo-icon{
  flex-shrink:0;width:44px;height:44px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,216,198,0.10);border:1px solid rgba(47,216,198,0.28);
  color:var(--cyan);font-size:16px;
}
.duo-text span{display:block;font-size:12px;letter-spacing:0.04em;color:var(--text-3);margin-bottom:4px;}
.duo-text strong{display:block;font-size:17px;font-weight:600;color:#FFFFFF;line-height:1.45;}
.duo-card:hover .duo-text strong{color:var(--cyan);}

/* related cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-lg);overflow:hidden;
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(47,216,198,0.5);box-shadow:var(--shadow-2);}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:rgba(11,17,32,0.9);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 260ms var(--ease);}
.card:hover .card-media img{transform:scale(1.04);}
.card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,22,0) 46%,rgba(7,11,22,0.78) 100%);
}
.card-badge{position:absolute;left:14px;top:14px;z-index:2;}
.card-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{
  font-size:17px;line-height:1.45;font-weight:600;color:#FFFFFF;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card:hover .card-body h3{color:var(--cyan);}
.card-body p{
  font-size:14px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);}
.card-meta .read{color:var(--cyan);font-size:13px;display:inline-flex;align-items:center;gap:5px;}

/* back actions */
.back-actions{
  display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;
  padding:22px 24px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:68px 0 26px;position:relative;z-index:2;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1fr;gap:48px;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--text-3);max-width:340px;}
.site-footer h4{font-size:14px;font-weight:600;letter-spacing:0.04em;color:#FFFFFF;margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .article-head h1{font-size:36px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .nav-top{height:56px;gap:14px;}
  .nav-search{display:none;}
  .brand-sub{display:none;}
  .channel-row{gap:22px;height:48px;}
  .article-head{padding:16px 0 22px;}
  .article-head h1{font-size:30px;margin:14px 0 14px;}
  .article-body{padding:28px 22px;}
  .article-body h2{font-size:21px;margin:36px 0 16px;}
  .article-body h3{font-size:17.5px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:24px;}
  .duo-grid{grid-template-columns:1fr;}
  .card-grid{
    display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding-bottom:8px;scrollbar-width:none;
  }
  .card-grid::-webkit-scrollbar{display:none;}
  .card{flex:0 0 76%;scroll-snap-align:start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .breadcrumb .current{max-width:52%;}
}
@media (max-width:480px){
  .article-head h1{font-size:26px;}
  .article-body{padding:22px 18px;}
  .card{flex:0 0 84%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .back-actions{flex-direction:column;}
  .back-actions .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --bg:#070B16;
  --bg-alt:#0B1120;
  --footer-bg:#050810;
  --glass:rgba(20,32,58,0.52);
  --glass-soft:rgba(20,32,58,0.34);
  --glass-line:rgba(122,196,255,0.14);
  --cyan:#2FD8C6;
  --cyan-deep:#1FA99B;
  --violet:#7A6BFF;
  --amber:#FFB454;
  --text:#E6EDF7;
  --text-2:#9DAFC8;
  --text-3:#6B7A94;
  --line:rgba(157,175,200,0.14);
  --r-lg:18px;
  --r-card:22px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-rest:0 1px 0 rgba(255,255,255,0.04), 0 12px 32px rgba(0,0,0,0.36);
  --sh-hover:0 18px 44px rgba(47,216,198,0.16);
  --sh-glow:0 0 0 1px rgba(47,216,198,0.35), 0 10px 34px rgba(47,216,198,0.26);
  --t:220ms;
  --ease:cubic-bezier(0.22,0.61,0.36,1);
  --font:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--t) var(--ease)}
a:hover{color:var(--cyan)}
button,input{font-family:inherit}
h1,h2,h3,h4,p,dl,dd,dt,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0;position:relative}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:720px;margin-bottom:48px}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.04em;color:var(--cyan);
  background:rgba(47,216,198,0.09);
  border:1px solid rgba(47,216,198,0.24);
  border-radius:var(--r-pill);padding:6px 14px;margin-bottom:18px;
}
.section-title{font-size:34px;line-height:1.25;font-weight:700;letter-spacing:-0.01em}
.section-desc{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.8;max-width:42ch}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:transparent;
  transition:background var(--t) var(--ease),border-color var(--t) var(--ease),backdrop-filter var(--t) var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(7,11,22,0.86);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:var(--line);
}
.nav-top{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;flex-direction:column;line-height:1.1;flex:0 0 auto}
.brand-mark{font-size:19px;font-weight:800;letter-spacing:-0.01em;color:var(--text)}
.brand-sub{font-size:11px;letter-spacing:.08em;color:var(--cyan);margin-top:3px}
.brand:hover .brand-mark{color:var(--cyan)}
.nav-search{
  display:flex;align-items:center;gap:10px;
  flex:1 1 auto;max-width:380px;height:40px;padding:0 14px;
  background:var(--glass-soft);border:1px solid var(--glass-line);
  border-radius:var(--r-sm);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.nav-search i{color:var(--text-3);font-size:14px}
.nav-search input{
  flex:1;height:100%;border:0;background:transparent;outline:none;
  color:var(--text);font-size:14px;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search:focus-within{
  border-color:rgba(47,216,198,0.6);
  box-shadow:0 0 0 3px rgba(47,216,198,0.18);
}
.nav-cta{margin-left:auto;flex:0 0 auto}
.nav-channels{border-top:1px solid var(--line)}
.channel-row{display:flex;align-items:center;gap:30px;height:48px}
.channel{
  position:relative;display:flex;align-items:center;height:100%;
  font-size:15px;color:var(--text-2);
  white-space:nowrap;
}
.channel:hover{color:var(--text)}
.channel.is-active{color:var(--cyan);font-weight:600}
.channel.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  border-radius:2px;background:linear-gradient(90deg,var(--cyan),var(--violet));
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease),filter var(--t) var(--ease),color var(--t) var(--ease);
  will-change:transform;
}
.btn-primary{
  background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));
  color:#04231F;box-shadow:var(--sh-glow);
}
.btn-primary:hover{filter:brightness(1.07);transform:translateY(-2px);color:#04231F}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,216,198,0.3)}
.btn-ghost{
  background:var(--glass);border-color:var(--glass-line);color:var(--text);
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(47,216,198,0.4);color:var(--text)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;pointer-events:none}

/* ---------- 页头主视觉 ---------- */
.page-hero{padding:72px 0 96px;position:relative;overflow:hidden}
.glow{position:absolute;border-radius:50%;filter:blur(120px);opacity:.18;pointer-events:none;z-index:0}
.glow-a{width:520px;height:520px;background:radial-gradient(circle,var(--cyan),transparent 68%);top:-160px;left:-140px}
.glow-b{width:460px;height:460px;background:radial-gradient(circle,var(--violet),transparent 68%);top:60px;right:-160px}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.04em;color:var(--amber);
  background:rgba(255,180,84,0.1);border:1px solid rgba(255,180,84,0.26);
  border-radius:var(--r-pill);padding:6px 14px;
}
.page-hero h1{
  margin-top:20px;
  font-size:54px;line-height:1.12;font-weight:800;letter-spacing:-0.01em;
}
.page-hero h1 em{font-style:normal;color:var(--cyan);display:block}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-2);max-width:36ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.trust-row{
  display:flex;flex-wrap:wrap;gap:26px;margin-top:38px;
  padding-top:24px;border-top:1px solid var(--line);
}
.trust-item{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-2)}
.trust-item::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 10px rgba(47,216,198,0.7);
  flex:0 0 auto;
}
.phone-wrap{position:relative}
.phone-card{
  position:relative;aspect-ratio:9/16;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--glass-line);
  box-shadow:var(--sh-rest),0 0 0 1px rgba(47,216,198,0.12);
  background:linear-gradient(160deg,rgba(20,32,58,0.9),rgba(11,17,32,0.9));
}
.phone-card img{width:100%;height:100%;object-fit:cover}
.phone-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,16,0.05) 30%,rgba(5,8,16,0.86) 100%);
}
.play-btn{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:50%;border:0;cursor:pointer;z-index:2;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));
  color:#04231F;font-size:17px;box-shadow:var(--sh-glow);
  transition:transform var(--t) var(--ease),filter var(--t) var(--ease);
}
.play-btn:hover{transform:translate(-50%,-50%) scale(1.06);filter:brightness(1.08)}
.duration-badge{
  position:absolute;top:14px;right:14px;z-index:2;
  font-family:var(--font-num);font-size:12px;letter-spacing:.04em;
  color:var(--text);background:rgba(5,8,16,0.7);
  border:1px solid var(--glass-line);border-radius:var(--r-pill);padding:4px 10px;
}
.phone-caption{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:2;
}
.phone-caption strong{display:block;font-size:15px;font-weight:600;color:var(--text)}
.phone-caption span{font-size:12px;color:var(--text-2)}

/* ---------- 简介条 ---------- */
.intro-band{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  margin-top:56px;position:relative;z-index:1;
}
.intro-cell{
  background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-lg);padding:22px 24px;
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-rest);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.intro-cell:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(47,216,198,0.34)}
.intro-cell strong{display:block;font-size:15px;font-weight:600;margin-bottom:8px}
.intro-cell p{font-size:14px;line-height:1.7;color:var(--text-2)}
.intro-lede{
  max-width:80ch;font-size:16px;line-height:1.85;color:var(--text-2);
  margin-bottom:32px;
}

/* ---------- 步骤清单 ---------- */
.step-list{border-top:1px solid var(--line)}
.step-item{
  position:relative;
  display:grid;grid-template-columns:92px 1fr 32px;gap:24px;align-items:center;
  padding:28px 26px;border-bottom:1px solid var(--line);
  transition:transform var(--t) var(--ease),background var(--t) var(--ease),border-radius var(--t) var(--ease);
}
.step-item::before{
  content:"";position:absolute;left:0;top:22%;bottom:22%;width:3px;border-radius:3px;
  background:var(--cyan);opacity:0;transition:opacity var(--t) var(--ease);
}
.step-item:hover{background:var(--glass);border-radius:var(--r-lg);transform:translateX(4px)}
.step-item:hover::before{opacity:1}
.step-num{
  font-family:var(--font-num);font-size:30px;font-weight:700;
  color:var(--cyan);letter-spacing:.02em;line-height:1;
}
.step-body h3{font-size:17px;line-height:1.45;font-weight:600}
.step-body p{margin-top:8px;font-size:14px;line-height:1.7;color:var(--text-2);max-width:52ch}
.step-arrow{color:var(--text-3);font-size:15px;text-align:right;transition:color var(--t) var(--ease),transform var(--t) var(--ease)}
.step-item:hover .step-arrow{color:var(--cyan);transform:translateX(3px)}

/* ---------- 环境要求 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.spec-item{
  display:grid;grid-template-columns:120px 1fr;gap:16px;align-items:baseline;
  padding:20px 22px;background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-md);
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.spec-item:hover{border-color:rgba(47,216,198,0.34);box-shadow:var(--sh-hover)}
.spec-item dt{font-size:14px;color:var(--text-3);letter-spacing:.02em}
.spec-item dd{font-size:14px;line-height:1.7;color:var(--text)}
.spec-note{
  margin-top:28px;padding:18px 22px;border-radius:var(--r-md);
  background:rgba(122,107,255,0.08);border:1px solid rgba(122,107,255,0.24);
  font-size:14px;line-height:1.75;color:var(--text-2);
}
.spec-note strong{color:var(--text);font-weight:600}

/* ---------- 图卡网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.media-card{
  display:flex;align-items:stretch;gap:0;overflow:hidden;
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-lg);
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-rest);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(47,216,198,0.36)}
.media-thumb{
  flex:0 0 168px;aspect-ratio:4/5;overflow:hidden;position:relative;
  background:rgba(11,17,32,0.9);
}
.media-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t) var(--ease)}
.media-card:hover .media-thumb img{transform:scale(1.04)}
.media-body{padding:24px;display:flex;flex-direction:column;gap:10px;justify-content:center}
.media-body .tag{
  align-self:flex-start;font-size:12px;letter-spacing:.04em;color:var(--cyan);
  border:1px solid rgba(47,216,198,0.28);border-radius:var(--r-pill);padding:4px 11px;
}
.media-body h3{font-size:17px;line-height:1.45;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.media-body p{font-size:14px;line-height:1.7;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px}
.faq-item{
  background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-md);margin-bottom:14px;overflow:hidden;
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.faq-item:hover{border-color:rgba(47,216,198,0.3)}
.faq-item.is-open{border-color:rgba(47,216,198,0.4);box-shadow:0 14px 36px rgba(47,216,198,0.1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;line-height:1.5;font-weight:600;color:var(--text);
}
.faq-q i{color:var(--cyan);font-size:15px;transition:transform var(--t) var(--ease);flex:0 0 auto}
.faq-item.is-open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--t) ease-out}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:66ch}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--glass-line);
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  padding:52px 48px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(5,8,16,0.9),rgba(7,11,22,0.72));
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-0.01em}
.cta-inner p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:46ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:26px;
}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--cyan)}
.crumb .sep{color:rgba(157,175,200,0.34)}
.crumb .current{color:var(--cyan)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:var(--text-2);max-width:38ch}
.site-footer h4{font-size:15px;font-weight:600;color:var(--text);margin-bottom:18px}
.footer-links{display:grid;gap:11px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--cyan)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:56px;padding-top:26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- 图片降级 ---------- */
.img-fallback{
  display:flex;align-items:center;justify-content:center;width:100%;height:100%;
  background:rgba(20,32,58,0.6);color:var(--text-3);font-size:13px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .phone-wrap{max-width:340px}
  .intro-band{grid-template-columns:1fr;gap:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .page-hero{padding:48px 0 64px}
  .page-hero h1{font-size:34px;line-height:1.2}
  .section-title{font-size:26px}
  .nav-top{height:56px;gap:14px}
  .nav-search{display:none}
  .channel-row{
    gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
    -ms-overflow-style:none;scrollbar-width:none;
  }
  .channel-row::-webkit-scrollbar{display:none}
  .channel{scroll-snap-align:start}
  .spec-grid{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .step-item{grid-template-columns:64px 1fr 22px;gap:16px;padding:22px 16px}
  .step-num{font-size:24px}
  .cta-band{padding:36px 24px}
  .cta-inner h2{font-size:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .phone-wrap{max-width:100%;margin:0 auto;width:min(320px,84vw)}
}
@media (max-width:520px){
  .brand-sub{display:none}
  .site-footer .brand-sub{display:block}
  .page-hero h1{font-size:30px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .trust-row{gap:14px;flex-direction:column}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .media-card{flex-direction:row}
  .media-thumb{flex:0 0 118px}
  .media-body{padding:18px}
}

/* roulang page: category2 */
:root{
  --bg:#070B16;
  --bg-alt:#0B1120;
  --bg-foot:#050810;
  --glass:rgba(20,32,58,0.52);
  --glass-line:rgba(122,196,255,0.14);
  --glass-hi:inset 0 1px 0 rgba(255,255,255,0.06);
  --primary:#2FD8C6;
  --primary-deep:#1FA99B;
  --accent:#7A6BFF;
  --amber:#FFB454;
  --text:#E6EDF7;
  --text-2:#9DAFC8;
  --text-3:#6B7A94;
  --line:rgba(157,175,200,0.14);
  --r-lg:18px;
  --r-xl:22px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-rest:0 10px 30px rgba(0,0,0,0.38);
  --shadow-hover:0 18px 44px rgba(47,216,198,0.16);
  --glow:0 0 0 1px rgba(47,216,198,0.35), 0 10px 34px rgba(47,216,198,0.26);
  --ease:cubic-bezier(0.22,0.61,0.36,1);
  --dur:220ms;
  --font:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--primary);}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;
  letter-spacing:0.02em;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#03130F;
  box-shadow:var(--glow);
}
.btn-primary:hover{color:#03130F;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(47,216,198,0.45),0 16px 40px rgba(47,216,198,0.32);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--glass);
  border:1px solid var(--glass-line);
  color:var(--text);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--glass-hi);
}
.btn-ghost:hover{color:var(--text);border-color:rgba(47,216,198,0.5);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn[disabled]{opacity:0.4;box-shadow:none;cursor:not-allowed;transform:none;}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-pill);
  font-size:12px;line-height:1;letter-spacing:0.04em;
  background:rgba(47,216,198,0.12);
  border:1px solid rgba(47,216,198,0.28);
  color:var(--primary);
  white-space:nowrap;
}
.tag-amber{background:rgba(255,180,84,0.14);border-color:rgba(255,180,84,0.34);color:var(--amber);}
.tag-violet{background:rgba(122,107,255,0.16);border-color:rgba(122,107,255,0.34);color:#B7AEFF;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,22,0.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,11,22,0.94);
  border-bottom-color:var(--line);
}
.nav-top{
  display:flex;align-items:center;gap:24px;
  height:64px;
}
.brand{display:inline-flex;align-items:baseline;gap:8px;flex-shrink:0;}
.brand-mark{
  font-size:20px;font-weight:800;letter-spacing:0.02em;
  color:var(--text);
}
.brand-sub{
  font-size:12px;font-weight:500;letter-spacing:0.06em;
  color:var(--text-3);
}
.brand:hover .brand-mark{color:var(--primary);}
.nav-search{
  flex:1;max-width:360px;
  display:flex;align-items:center;gap:10px;
  padding:0 14px;height:38px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--glass-line);
  box-shadow:var(--glass-hi);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-search i{color:var(--text-3);font-size:13px;}
.nav-search input{
  flex:1;background:none;border:0;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(47,216,198,0.18);
}
.nav-cta{margin-left:auto;}
.nav-channels{border-top:1px solid var(--line);}
.channel-row{
  display:flex;align-items:center;gap:28px;
  height:50px;
  overflow-x:auto;
  scrollbar-width:none;
}
.channel-row::-webkit-scrollbar{display:none;}
.channel{
  position:relative;
  display:inline-flex;align-items:center;
  height:100%;
  font-size:14px;font-weight:500;
  color:var(--text-2);
  white-space:nowrap;
}
.channel::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  border-radius:2px;background:var(--primary);
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.channel:hover{color:var(--text);}
.channel.is-active{color:var(--primary);font-weight:600;}
.channel.is-active::after{transform:scaleX(1);}

/* ---------- 通用板块 ---------- */
.section{
  position:relative;
  padding:96px 0;
}
.section-alt{background:var(--bg-alt);}
.section-head{margin-bottom:40px;}
.section-head h2{
  font-size:34px;line-height:1.25;font-weight:700;
  letter-spacing:-0.01em;
}
.section-head p{
  margin-top:12px;font-size:15px;color:var(--text-2);max-width:640px;
}
.band-accent{
  display:inline-block;width:3px;height:26px;border-radius:2px;
  background:var(--primary);margin-right:12px;vertical-align:-3px;
}
.glow-orb{
  position:absolute;border-radius:50%;filter:blur(120px);
  pointer-events:none;z-index:0;
}
.orb-cyan{width:420px;height:420px;background:rgba(47,216,198,0.16);}
.orb-violet{width:460px;height:460px;background:rgba(122,107,255,0.14);}
.section > .container{position:relative;z-index:1;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:72px 0 88px;
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:64px;
  align-items:center;
}
.hero-label{margin-bottom:20px;}
.hero h1{
  font-size:54px;line-height:1.12;font-weight:800;
  letter-spacing:-0.01em;
}
.hero h1 em{
  font-style:normal;
  color:var(--primary);
}
.hero-sub{
  margin-top:18px;
  font-size:17px;color:var(--text-2);max-width:520px;
}
.hero-actions{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;
}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:28px;
  margin-top:36px;padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-facts li{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--text-2);
}
.hero-facts i{color:var(--primary);font-size:13px;}
.phone-card{
  position:relative;
  aspect-ratio:9/16;
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--glass-line);
  background:linear-gradient(160deg,rgba(20,32,58,0.9),rgba(11,17,32,0.9));
  box-shadow:var(--shadow-rest),inset 0 1px 0 rgba(255,255,255,0.06);
}
.phone-card img{
  width:100%;height:100%;object-fit:cover;
}
.phone-card::after{
  content:"";position:absolute;inset:auto 0 0 0;height:52%;
  background:linear-gradient(180deg,rgba(7,11,22,0) 0%,rgba(7,11,22,0.88) 100%);
  pointer-events:none;
}
.phone-meta{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:2;
}
.phone-meta strong{
  display:block;font-size:17px;font-weight:600;line-height:1.45;
}
.phone-meta span{
  display:block;margin-top:6px;font-size:13px;color:var(--text-2);
}
.phone-badge{
  position:absolute;top:16px;left:16px;z-index:2;
}

/* ---------- 交错图文 ---------- */
.split-row{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:center;
}
.split-row + .split-row{margin-top:88px;}
.split-row.reverse .split-media{order:2;}
.split-row.reverse .split-body{order:1;}
.split-media{
  position:relative;
  aspect-ratio:9/16;
  max-width:340px;
  width:100%;
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-rest);
  background:var(--glass);
  transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.split-row.reverse .split-media{margin-left:auto;}
.split-media img{width:100%;height:100%;object-fit:cover;}
.split-media:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.split-body h3{
  font-size:20px;font-weight:600;line-height:1.4;
  margin-bottom:14px;
}
.split-body p{
  font-size:16px;line-height:1.85;color:var(--text-2);max-width:600px;
}
.check-list{margin-top:22px;display:grid;gap:12px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-2);line-height:1.7;
}
.check-list i{
  color:var(--primary);font-size:13px;margin-top:6px;flex-shrink:0;
}
.split-body .btn{margin-top:28px;}

/* ---------- 横向滚动特性条 ---------- */
.rail{
  display:flex;gap:20px;
  overflow-x:auto;
  padding-bottom:8px;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-item{
  flex:0 0 260px;
  scroll-snap-align:start;
  padding:24px 22px;
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--glass-line);
  box-shadow:var(--glass-hi);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.rail-item:hover{
  transform:translateY(-4px);
  border-color:rgba(47,216,198,0.45);
  box-shadow:var(--shadow-hover);
}
.rail-item i{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;
  background:rgba(47,216,198,0.12);
  color:var(--primary);font-size:15px;
  margin-bottom:16px;
}
.rail-item h3{font-size:17px;font-weight:600;line-height:1.45;margin-bottom:8px;}
.rail-item p{font-size:14px;line-height:1.7;color:var(--text-2);}

/* ---------- 对比信息卡 ---------- */
.compare-card{
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--glass-line);
  box-shadow:var(--glass-hi);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  overflow:hidden;
}
.compare-col{padding:36px 32px;}
.compare-col + .compare-col{border-left:1px solid var(--line);}
.compare-col h3{
  display:flex;align-items:center;gap:10px;
  font-size:17px;font-weight:600;margin-bottom:20px;
}
.compare-col h3 span{
  width:8px;height:8px;border-radius:50%;background:var(--primary);
}
.compare-col.violet h3 span{background:var(--accent);}
.compare-list{display:grid;gap:16px;}
.compare-list dt{
  font-size:14px;font-weight:600;color:var(--text);
  letter-spacing:0.02em;
}
.compare-list dd{
  margin:4px 0 0;font-size:14px;line-height:1.75;color:var(--text-2);
}

/* ---------- FAQ ---------- */
.faq-list{
  display:grid;gap:12px;
  max-width:880px;
}
.faq-item{
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--glass-line);
  box-shadow:var(--glass-hi);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  overflow:hidden;
  transition:border-color var(--dur) var(--ease);
}
.faq-item.is-open{border-color:rgba(47,216,198,0.42);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 26px;text-align:left;
  font-size:17px;font-weight:600;line-height:1.45;color:var(--text);
}
.faq-q i{
  color:var(--primary);font-size:15px;flex-shrink:0;
  transition:transform var(--dur) var(--ease);
}
.faq-item.is-open .faq-q i{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height var(--dur) ease-out;
}
.faq-a p{
  padding:0 26px 24px;
  font-size:15px;line-height:1.8;color:var(--text-2);
}

/* ---------- 结论 CTA ---------- */
.cta-band{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-rest);
  padding:56px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  background-color:var(--bg-alt);
  background-image:linear-gradient(90deg,rgba(7,11,22,0.88) 0%,rgba(7,11,22,0.68) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.cta-band h2{font-size:30px;line-height:1.3;font-weight:700;}
.cta-band p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:520px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-foot);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:48px;
}
.footer-brand p{
  margin-top:18px;
  font-size:14px;line-height:1.8;color:var(--text-3);max-width:340px;
}
.site-footer h4{
  font-size:15px;font-weight:600;color:var(--text);
  margin-bottom:18px;letter-spacing:0.02em;
}
.footer-links{display:grid;gap:12px;}
.footer-links a{
  font-size:14px;color:var(--text-2);
}
.footer-links a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:56px;
  padding:24px 0;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .hero h1{font-size:46px;}
  .hero-grid{gap:48px;}
}
@media (max-width:1024px){
  .container{padding:0 28px;}
  .section{padding:80px 0;}
  .hero{padding:56px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .phone-card{max-width:320px;margin:0 auto;}
  .split-row{grid-template-columns:1fr;gap:32px;}
  .split-row.reverse .split-media{order:1;}
  .split-row.reverse .split-body{order:2;}
  .split-media{max-width:300px;margin:0 auto;}
  .split-row.reverse .split-media{margin:0 auto;}
  .compare-card{grid-template-columns:1fr;}
  .compare-col + .compare-col{border-left:0;border-top:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}
@media (max-width:768px){
  body{font-size:15px;}
  .container{padding:0 20px;}
  .nav-top{height:56px;gap:14px;}
  .brand-sub{display:none;}
  .nav-search{display:none;}
  .hero h1{font-size:34px;line-height:1.2;}
  .hero-sub{font-size:16px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:26px;}
  .section-head{margin-bottom:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 26px;}
  .cta-band h2{font-size:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .split-row + .split-row{margin-top:56px;}
  .faq-q{padding:18px 20px;font-size:16px;}
  .faq-a p{padding:0 20px 20px;}
}
@media (max-width:480px){
  .phone-card{aspect-ratio:4/5;max-width:100%;}
  .split-media{aspect-ratio:4/5;max-width:100%;}
  .hero-facts{gap:16px;flex-direction:column;}
  .hero-actions .btn{flex:1;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .brand-mark{font-size:18px;}
}