/* roulang page: index */
:root{
  --ink:#101418;
  --ink-deep:#0B0E11;
  --mint:#00E6B8;
  --mint-soft:rgba(0,230,184,.10);
  --orange:#FF6B2C;
  --gold:#F5C451;
  --bg:#F5F7F4;
  --card:#FFFFFF;
  --line:#E4E9E2;
  --line-dark:#1F262C;
  --text:#14181D;
  --muted:#5C6570;
  --radius-s:12px;
  --radius:16px;
  --radius-l:20px;
  --shadow-s:0 4px 14px rgba(10,15,20,.05);
  --shadow:0 8px 24px rgba(10,15,20,.06);
  --shadow-h:0 16px 40px rgba(10,15,20,.12);
  --shadow-mint:0 10px 30px rgba(0,230,184,.28);
  --gutter:24px;
  --section:88px;
  --font:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-num:"DIN Alternate","Barlow Condensed","HarmonyOS Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:15px}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.24}
p{margin:0}
::selection{background:rgba(0,230,184,.28)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 var(--gutter)}
.section{padding:var(--section) 0}
.section--tight{padding:64px 0}
.section--dark{background:var(--ink-deep);color:#E9EEF2}
.section--paper{background:#FFFFFF}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.sec-head h2{font-size:clamp(24px,2.6vw,34px)}
.sec-head p{color:var(--muted);font-size:15px;max-width:640px;margin-top:10px}
.section--dark .sec-head p{color:#93A0AC}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--mint);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--mint);display:block}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:0 26px;border-radius:var(--radius-s);
  font-size:15.5px;font-weight:700;border:1px solid transparent;
  transition:transform .22s ease,background-color .22s ease,color .22s ease,box-shadow .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn i{font-size:14px}
.btn--primary{background:var(--ink);color:#fff;border-color:rgba(0,230,184,.55)}
.btn--primary:hover{background:var(--mint);color:var(--ink);border-color:var(--mint);box-shadow:var(--shadow-mint);transform:translateY(-2px)}
.btn--primary:active{transform:scale(.98)}
.btn--ghost{background:transparent;color:#EAF2F2;border-color:rgba(255,255,255,.28)}
.btn--ghost:hover{border-color:var(--mint);color:var(--mint);transform:translateY(-2px)}
.btn--ghost:active{transform:scale(.98)}
.btn--outline{background:transparent;color:var(--text);border-color:var(--line)}
.btn--outline:hover{border-color:var(--mint);color:#0A8E76;transform:translateY(-2px)}
.btn--block{width:100%}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn.is-loading{pointer-events:none;position:relative;color:transparent!important}
.btn.is-loading::after{
  content:"";position:absolute;width:18px;height:18px;border-radius:50%;
  border:2px solid currentColor;border-top-color:transparent;color:#fff;
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
:focus-visible{outline:3px solid rgba(0,230,184,.75);outline-offset:2px}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,14,18,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-dark);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(140deg,var(--mint),#0B8E76);
  display:grid;place-items:center;color:#06231D;font-weight:900;font-size:17px;
  box-shadow:0 6px 18px rgba(0,230,184,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{color:#fff;font-size:17px;font-weight:800;letter-spacing:-.01em}
.brand-name em{font-style:normal;color:var(--mint)}
.brand-sub{font-size:11px;color:#7E8C98;letter-spacing:.14em;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{
  position:relative;color:#C6D0D8;font-size:15px;font-weight:600;
  padding:8px 4px;border-radius:999px;
  transition:color .2s ease,transform .2s ease,background-color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:8px;right:8px;bottom:-2px;height:2px;
  background:var(--mint);transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;border-radius:2px;
}
.nav-links a:hover{color:#fff;transform:translateY(-1px)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{background:var(--mint-soft);color:var(--mint)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid var(--line-dark);color:#fff;font-size:18px;
}
.nav-toggle:hover{border-color:var(--mint);color:var(--mint)}

.drawer{
  position:fixed;inset:0 0 0 auto;width:min(340px,86vw);z-index:120;
  background:#0B0E11;border-left:1px solid var(--line-dark);
  transform:translateX(105%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  padding:22px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:40px;height:40px;border-radius:11px;background:rgba(255,255,255,.06);border:1px solid var(--line-dark);color:#fff;font-size:17px}
.drawer-close:hover{border-color:var(--mint);color:var(--mint)}
.drawer-label{font-size:12px;font-weight:700;letter-spacing:.12em;color:#6C7A86;text-transform:uppercase;margin:8px 0 6px}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-radius:var(--radius-s);color:#D6DEE5;font-weight:600;
  border:1px solid transparent;transition:all .2s ease;
}
.drawer a.drawer-link:hover{background:rgba(255,255,255,.05);border-color:var(--line-dark);color:#fff}
.drawer a.drawer-link.active{background:var(--mint-soft);color:var(--mint);border-color:rgba(0,230,184,.28)}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line-dark)}
.overlay{position:fixed;inset:0;background:rgba(4,7,10,.6);opacity:0;visibility:hidden;transition:.25s;z-index:110}
.overlay.open{opacity:1;visibility:visible}

/* ===== Hero ===== */
.hero{
  position:relative;color:#fff;overflow:hidden;
  background:
    linear-gradient(105deg,rgba(8,11,14,.94) 0%,rgba(8,11,14,.82) 42%,rgba(8,11,14,.62) 100%),
    radial-gradient(70% 90% at 88% 12%,rgba(0,230,184,.22),transparent 62%),
    radial-gradient(50% 70% at 6% 92%,rgba(255,107,44,.20),transparent 60%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 70% 30%,#000 0%,transparent 78%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:56px;align-items:center;padding:88px 0 96px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 16px;border-radius:999px;font-size:13px;font-weight:700;
  color:var(--mint);background:rgba(0,230,184,.12);border:1px solid rgba(0,230,184,.32);
}
.live-dot{width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 0 rgba(0,230,184,.7);animation:pulse 1.9s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 10px rgba(0,230,184,0)}100%{box-shadow:0 0 0 0 rgba(0,230,184,0)}}
.hero h1{
  font-size:clamp(30px,4.4vw,52px);font-weight:900;margin:22px 0 18px;letter-spacing:-.02em;
}
.hero h1 span{color:var(--mint)}
.hero-lead{font-size:17px;color:#B9C4CC;max-width:600px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 30px}
.hero-points span{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;
  padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);color:#D7E0E6;
}
.hero-points i{color:var(--mint);font-size:12px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-stats{display:flex;gap:36px;margin-top:44px;padding-top:26px;border-top:1px solid rgba(255,255,255,.12)}
.hero-stats div b{display:block;font-family:var(--font-num);font-size:26px;color:#fff;letter-spacing:.01em}
.hero-stats div span{font-size:13px;color:#8B98A4}

/* 竖屏媒体卡 */
.phone-card{
  position:relative;width:100%;max-width:322px;margin-left:auto;
  aspect-ratio:9/16;border-radius:var(--radius-l);overflow:hidden;
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 30px 70px rgba(0,0,0,.55);
  background:linear-gradient(160deg,#16202a,#0B0E11);
}
.phone-card img{width:100%;height:100%;object-fit:cover;opacity:.92}
.phone-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,9,12,.15) 0%,rgba(6,9,12,.05) 45%,rgba(6,9,12,.88) 100%);
}
.phone-top{position:absolute;top:16px;left:16px;right:16px;display:flex;justify-content:space-between;z-index:3}
.chip{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;
  padding:6px 12px;border-radius:999px;background:rgba(11,14,17,.72);
  border:1px solid rgba(255,255,255,.18);color:#E6EDF1;backdrop-filter:blur(6px);
}
.chip--live{color:var(--mint);border-color:rgba(0,230,184,.4);background:rgba(0,230,184,.14)}
.chip--orange{color:#FFD3BE;border-color:rgba(255,107,44,.45);background:rgba(255,107,44,.18)}
.play-btn{
  position:absolute;left:50%;top:46%;transform:translate(-50%,-50%);
  width:70px;height:70px;border-radius:50%;border:none;z-index:3;
  background:rgba(0,230,184,.92);color:#04221B;font-size:22px;
  display:grid;place-items:center;box-shadow:0 0 0 12px rgba(0,230,184,.14);
  transition:transform .24s ease,box-shadow .24s ease;
}
.phone-card:hover .play-btn{transform:translate(-50%,-50%) scale(1.07);box-shadow:0 0 0 20px rgba(0,230,184,.16)}
.phone-info{position:absolute;left:18px;right:18px;bottom:20px;z-index:3}
.phone-info h3{font-size:17px;color:#fff;margin-bottom:6px}
.phone-info p{font-size:13px;color:#A9B5BF;margin-bottom:14px}
.progress-line{height:4px;border-radius:4px;background:rgba(255,255,255,.24);overflow:hidden}
.progress-line i{display:block;height:100%;width:38%;background:var(--mint);border-radius:4px}

/* ===== 横滑片段卡 ===== */
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:rgba(16,20,24,.18);border-radius:6px}
.rail::-webkit-scrollbar-track{background:transparent}
.shot{
  flex:0 0 232px;scroll-snap-align:start;position:relative;
  border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--line);
  background:var(--card);box-shadow:var(--shadow-s);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.shot:hover{transform:translateY(-4px) scale(1.02);box-shadow:var(--shadow-h);border-color:rgba(0,230,184,.55)}
.shot-cover{position:relative;aspect-ratio:9/16;overflow:hidden}
.shot-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.shot:hover .shot-cover img{transform:scale(1.05)}
.shot-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,9,12,.05) 30%,rgba(6,9,12,.85) 100%)}
.shot-tag{position:absolute;top:12px;left:12px;z-index:2;font-size:11.5px;font-weight:700;padding:5px 10px;border-radius:999px;background:rgba(11,14,17,.72);color:#EAF1F4;border:1px solid rgba(255,255,255,.16)}
.shot-time{position:absolute;right:12px;bottom:12px;z-index:2;font-family:var(--font-num);font-size:12.5px;color:#fff;background:rgba(6,9,12,.7);padding:4px 9px;border-radius:8px}
.shot-play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2;
  width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.9);color:#101418;
  display:grid;place-items:center;font-size:15px;border:none;
  transition:box-shadow .24s ease,background-color .24s ease;
}
.shot:hover .shot-play{background:var(--mint);box-shadow:0 0 26px rgba(0,230,184,.75)}
.shot-body{padding:14px 15px 16px}
.shot-body h3{font-size:15.5px;line-height:1.45;margin-bottom:8px}
.shot-meta{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted)}
.shot-meta b{font-family:var(--font-num);color:var(--orange);font-weight:700}

/* ===== 种草清单 ===== */
.list-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);gap:44px;align-items:start}
.check-list{display:flex;flex-direction:column;gap:14px}
.check-item{
  display:flex;gap:16px;align-items:flex-start;padding:18px 20px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-s);transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.check-item:hover{transform:translateY(-4px);border-color:rgba(0,230,184,.55);box-shadow:var(--shadow-h)}
.check-num{
  flex:0 0 34px;height:34px;border-radius:10px;background:var(--mint-soft);color:#068C74;
  font-family:var(--font-num);font-weight:800;display:grid;place-items:center;font-size:15px;
}
.check-item h3{font-size:16.5px;margin-bottom:4px}
.check-item p{font-size:14.5px;color:var(--muted)}
.check-item i.done{color:var(--mint);margin-left:auto;align-self:center;font-size:15px}
.side-card{
  background:var(--ink);color:#E8EFF3;border-radius:var(--radius-l);padding:28px 24px;
  position:sticky;top:96px;border:1px solid #1E252B;box-shadow:0 20px 46px rgba(10,15,20,.22);
}
.side-card h3{font-size:20px;color:#fff;margin-bottom:10px}
.side-card p{font-size:14.5px;color:#98A5B0;margin-bottom:20px}
.side-list{display:flex;flex-direction:column;gap:11px;margin-bottom:22px}
.side-list li{display:flex;align-items:center;gap:10px;font-size:14px;color:#C8D3DA}
.side-list i{color:var(--mint);font-size:12px}

/* ===== 口碑条 ===== */
.review-rail{display:flex;gap:18px;overflow-x:auto;padding:6px 4px 20px;scroll-snap-type:x mandatory}
.review-rail::-webkit-scrollbar{height:6px}
.review-rail::-webkit-scrollbar-thumb{background:rgba(16,20,24,.18);border-radius:6px}
.review{
  flex:0 0 300px;scroll-snap-align:start;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-s);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.review:hover{transform:translateY(-4px);border-color:rgba(0,230,184,.5);box-shadow:var(--shadow-h)}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:15px;color:#04221B;background:linear-gradient(140deg,var(--mint),#57F0D4)}
.review-head b{display:block;font-size:14.5px}
.review-head span{font-size:12.5px;color:var(--muted)}
.stars{color:var(--gold);font-size:12.5px;letter-spacing:2px;margin-bottom:8px}
.review p{font-size:14.5px;color:#38414A}

/* ===== 最新信息（CMS 列表） ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.news-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-s);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(0,230,184,.55);box-shadow:var(--shadow-h)}
.news-card .chip-line{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.news-tag{
  font-size:12px;font-weight:700;color:#068C74;background:var(--mint-soft);
  padding:4px 11px;border-radius:999px;
}
.news-card h3{font-size:18px;line-height:1.5;margin-bottom:10px}
.news-card p{font-size:14.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:18px;padding-top:14px;border-top:1px dashed var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}
.news-foot span i{margin-right:6px;color:#9AA6B0}
.news-more{color:#068C74;font-weight:700;display:inline-flex;align-items:center;gap:6px}
.news-more:hover{color:var(--orange)}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:12px;
  padding:56px 20px;border:1px dashed var(--line);border-radius:var(--radius);
  background:#FBFCFA;color:var(--muted);text-align:center;
}
.empty-state i{font-size:30px;color:#BFC9C2}
.empty-state p{font-size:15px}

/* ===== FAQ ===== */
.faq-wrap{max-width:920px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease}
.faq-item:hover{border-color:rgba(0,230,184,.45)}
.faq-item.open{border-color:rgba(0,230,184,.6);box-shadow:var(--shadow)}
.faq-q{
  width:100%;background:none;border:none;text-align:left;
  padding:18px 20px;display:flex;align-items:center;gap:16px;
  font-size:16.5px;font-weight:700;color:var(--text);
}
.faq-item.open .faq-q{position:relative}
.faq-item.open .faq-q::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--mint)}
.faq-q .plus{
  margin-left:auto;flex:0 0 28px;height:28px;border-radius:9px;background:var(--mint-soft);color:#068C74;
  display:grid;place-items:center;font-size:13px;transition:transform .28s ease;
}
.faq-item.open .faq-q .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 20px 20px 20px;font-size:15px;color:var(--muted)}

/* ===== 底部 CTA ===== */
.cta-band{
  position:relative;overflow:hidden;color:#fff;
  background:
    linear-gradient(100deg,rgba(8,11,14,.94),rgba(8,11,14,.78)),
    radial-gradient(60% 100% at 85% 20%,rgba(0,230,184,.26),transparent 60%),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;padding:68px 0;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(24px,3vw,36px);margin-bottom:12px}
.cta-inner p{color:#AEBAC3;font-size:15.5px;max-width:600px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink-deep);color:#95A2AD;padding:66px 0 0;border-top:1px solid var(--line-dark)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:46px}
.foot-brand .brand{margin-bottom:16px}
.foot-brand p{font-size:14.5px;line-height:1.85;max-width:330px}
.foot-col h4{color:#fff;font-size:15.5px;margin-bottom:16px}
.foot-col ul{display:flex;flex-direction:column;gap:10px}
.foot-col a{font-size:14.5px;color:#95A2AD;transition:color .2s ease,transform .2s ease;display:inline-block}
.foot-col a:hover{color:var(--mint);transform:translateX(3px)}
.foot-contact li{display:flex;gap:10px;font-size:14.5px;align-items:flex-start}
.foot-contact i{color:var(--mint);margin-top:5px;font-size:13px}
.foot-bottom{
  border-top:1px solid var(--line-dark);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:#6C7A86;
}
.foot-note{font-size:12.8px;color:#5E6B75;line-height:1.7;margin-top:12px}

/* 移动端吸底 CTA */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(11,14,17,.96);border-top:1px solid var(--line-dark);
  backdrop-filter:blur(10px);gap:12px;
}
.sticky-cta .btn{flex:1;min-height:46px;font-size:15px}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  :root{--section:64px;--gutter:20px}
  .nav-links{display:none}
  .nav-toggle{display:grid;place-items:center}
  .nav-cta .btn--primary{display:none}
  .hero-inner{grid-template-columns:1fr;gap:44px;padding:64px 0 72px}
  .phone-card{margin:0 auto;max-width:290px}
  .list-grid{grid-template-columns:1fr;gap:30px}
  .side-card{position:static}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--section:52px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .hero h1{margin:18px 0 14px}
  .hero-stats{gap:22px;flex-wrap:wrap}
  .hero-stats div b{font-size:22px}
  .news-grid{grid-template-columns:1fr}
  .cta-inner{padding:52px 0;flex-direction:column;align-items:flex-start}
  .sticky-cta{display:flex}
  .site-footer{padding-bottom:78px}
  .shot{flex:0 0 200px}
  .review{flex:0 0 265px}
}
@media (max-width:520px){
  :root{--gutter:16px}
  body{font-size:15px}
  .hero-inner{padding:52px 0 58px}
  .check-item{padding:16px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .btn{padding:0 20px;font-size:15px}
}

/* roulang page: article */
:root{
  --ink:#101418;
  --teal:#00E6B8;
  --teal-dim:rgba(0,230,184,.10);
  --orange:#FF6B2C;
  --gold:#F5C451;
  --bg:#F5F7F4;
  --dark:#0B0E11;
  --dark-2:#101418;
  --card:#FFFFFF;
  --line:#E4E9E2;
  --text:#14181D;
  --muted:#5C6570;
  --error:#E5484D;
  --radius-s:12px;
  --radius:16px;
  --radius-l:20px;
  --shadow-s:0 8px 24px rgba(10,15,20,.06);
  --shadow-m:0 16px 40px rgba(10,15,20,.12);
  --font:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"DIN Alternate","Barlow Condensed","HarmonyOS Sans SC",sans-serif;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,background-color .22s ease}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid var(--teal);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,14,18,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid #1F262C;
}
.nav-wrap{display:flex;align-items:center;gap:28px;min-height:70px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--teal),#00a98a 80%);
  color:#062018;font-weight:900;font-size:19px;font-family:var(--font-num);
  box-shadow:0 6px 18px rgba(0,230,184,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-name{color:#fff;font-size:17px;font-weight:800;letter-spacing:-.02em}
.brand-name em{color:var(--teal);font-style:normal}
.brand-sub{color:#7A848E;font-size:11px;letter-spacing:.16em;text-transform:uppercase;font-family:var(--font-num)}
.nav-links{display:flex;align-items:center;gap:24px;margin-left:auto}
.nav-links a{
  position:relative;color:#C6CDD4;font-size:15px;padding:8px 4px;border-radius:10px;
  transition:color .22s ease,transform .22s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:4px;right:4px;bottom:0;height:2px;border-radius:2px;
  background:var(--teal);transform:scaleX(0);transition:transform .22s ease;
}
.nav-links a:hover{color:#fff;transform:translateY(-1px)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--teal);background:var(--teal-dim);padding:8px 12px}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid #2A323A;color:#E6EBEF;font-size:17px;
}
.nav-toggle:hover{border-color:var(--teal);color:var(--teal)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:12px;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
}
.btn i{font-size:14px}
.btn--primary{
  background:var(--ink);color:var(--teal);border:1px solid rgba(0,230,184,.55);
  box-shadow:0 6px 18px rgba(0,230,184,.14);
}
.btn--primary:hover{background:var(--teal);color:#062018;box-shadow:0 10px 30px rgba(0,230,184,.28);transform:translateY(-2px)}
.btn--primary:active{transform:scale(.98)}
.btn--ghost{background:transparent;color:#E6EBEF;border:1px solid #343D45}
.btn--ghost:hover{border-color:var(--teal);color:var(--teal);transform:translateY(-2px)}
.btn--light{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn--light:hover{border-color:var(--teal);color:#00806a;transform:translateY(-2px)}
.btn--teal{background:var(--teal);color:#062018;border:1px solid var(--teal)}
.btn--teal:hover{box-shadow:0 12px 30px rgba(0,230,184,.35);transform:translateY(-2px)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;pointer-events:none}
.btn--block{width:100%}

/* ---------- shared bits ---------- */
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:999px;font-size:13px;font-weight:600;
  background:var(--teal-dim);color:#00806a;border:1px solid rgba(0,230,184,.32);
}
.chip--orange{background:rgba(255,107,44,.10);color:#C7440D;border-color:rgba(255,107,44,.30)}
.chip--gold{background:rgba(245,196,81,.16);color:#8B6407;border-color:rgba(245,196,81,.42)}
.chip--ghost{background:rgba(255,255,255,.08);color:#D5DBE1;border-color:rgba(255,255,255,.18)}

.section{padding:76px 0}
.section--tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:#00806a;font-family:var(--font-num);margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--teal);border-radius:2px}
.section-head h2{font-size:clamp(24px,3vw,34px)}
.section-head p{margin-top:12px;color:var(--muted);font-size:15.5px}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:var(--dark-2) url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  color:#fff;
  padding:44px 0 60px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 420px at 12% 0%,rgba(0,230,184,.20),transparent 62%),
    radial-gradient(620px 340px at 92% 12%,rgba(255,107,44,.18),transparent 66%),
    linear-gradient(180deg,rgba(11,14,17,.86),rgba(11,14,17,.94));
}
.article-hero::after{
  content:"";position:absolute;inset:0;opacity:.16;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.10) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.10) 1px,transparent 1px);
  background-size:56px 56px;
}
.article-hero .container{position:relative;z-index:2}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:#9AA4AE;margin-bottom:22px}
.crumb a{color:#C6CDD4}
.crumb a:hover{color:var(--teal)}
.crumb i{font-size:10px;color:#5D6873}
.crumb .now{color:var(--teal)}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.article-hero h1{
  font-size:clamp(30px,4.6vw,50px);
  font-weight:900;letter-spacing:-.03em;line-height:1.16;
  max-width:900px;
}
.hero-lead{margin-top:16px;max-width:720px;color:#B9C2CA;font-size:16px}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;
  margin-top:26px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13.5px;color:#9AA4AE;
}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--teal)}

/* ---------- article layout ---------- */
.article-wrap{padding:56px 0 84px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 288px;gap:44px;align-items:start}
.reader{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);
  box-shadow:var(--shadow-s);padding:38px 40px 44px;
}
.cover-figure{margin:0 0 34px}
.cover-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius);
  background:linear-gradient(135deg,#0f1a19,#132a26);
}
.cover-figure figcaption{margin-top:10px;font-size:13px;color:var(--muted);text-align:center}

.prose{max-width:800px;font-size:16px;line-height:1.85;color:var(--text)}
.prose > * + *{margin-top:20px}
.prose h2{
  font-size:clamp(22px,2.6vw,28px);margin-top:44px;padding-left:16px;position:relative;
  scroll-margin-top:96px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--teal),#00a98a);
}
.prose h3{font-size:19px;margin-top:32px;scroll-margin-top:96px;color:#0E2430}
.prose p{color:#242C34}
.prose a{color:#00806a;border-bottom:1px solid rgba(0,128,106,.35);font-weight:600}
.prose a:hover{color:var(--orange);border-color:rgba(255,107,44,.5)}
.prose ul,.prose ol{padding-left:2px;display:grid;gap:10px}
.prose ul li,.prose ol li{position:relative;padding-left:28px;color:#242C34}
.prose ul li::before{
  content:"";position:absolute;left:6px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--teal);box-shadow:0 0 0 4px rgba(0,230,184,.14);
}
.prose ol{counter-reset:li}
.prose ol li{counter-increment:li}
.prose ol li::before{
  content:counter(li);position:absolute;left:0;top:.16em;
  width:20px;height:20px;border-radius:6px;background:var(--ink);color:var(--teal);
  font-size:12px;font-weight:800;display:grid;place-items:center;font-family:var(--font-num);
}
.prose blockquote{
  margin:28px 0;padding:20px 24px;border-radius:var(--radius);
  background:#F2F8F6;border-left:4px solid var(--teal);color:#1D3A34;font-size:15.5px;
}
.prose blockquote p{color:#1D3A34}
.prose img{border-radius:var(--radius);border:1px solid var(--line)}
.prose figure{margin:28px 0}
.prose figure figcaption{margin-top:10px;font-size:13px;color:var(--muted);text-align:center}
.prose table{width:100%;border-collapse:collapse;font-size:14.5px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.prose th,.prose td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.prose th{background:#F3F6F3;font-weight:700}
.prose code{background:#F0F4F1;padding:2px 6px;border-radius:6px;font-size:14px}
.prose hr{border:0;height:1px;background:var(--line);margin:36px 0}

/* toc */
.toc{position:sticky;top:96px;display:grid;gap:18px}
.toc-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-s);padding:22px;
}
.toc-card h3{font-size:15px;display:flex;align-items:center;gap:8px;margin-bottom:14px;color:#0E2430}
.toc-card h3 i{color:var(--teal)}
.toc-list{display:grid;gap:4px;max-height:340px;overflow:auto}
.toc-list a{
  display:block;font-size:13.8px;color:var(--muted);padding:7px 10px;border-radius:9px;
  border-left:2px solid transparent;
}
.toc-list a:hover{background:#F3F7F4;color:#00806a}
.toc-list a.is-active{background:var(--teal-dim);color:#00806a;border-left-color:var(--teal);font-weight:700}
.toc-list a.lv3{padding-left:22px;font-size:13.2px}
.toc-cta{
  background:linear-gradient(150deg,#0E1A1E,#101418 70%);color:#fff;border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-s);border:1px solid #1F262C;
}
.toc-cta h4{font-size:16px;color:#fff;margin-bottom:8px}
.toc-cta p{font-size:13.5px;color:#9AA4AE;margin-bottom:16px}
.toc-toggle{display:none}

/* path / tips strip */
.tips-strip{
  margin-top:34px;display:grid;gap:14px;grid-template-columns:repeat(3,minmax(0,1fr));
}
.tip{
  background:#F7FAF8;border:1px solid var(--line);border-radius:var(--radius);padding:18px;
  display:flex;gap:13px;align-items:flex-start;
}
.tip i{color:var(--teal);font-size:17px;margin-top:3px}
.tip strong{display:block;font-size:15px;margin-bottom:4px}
.tip span{font-size:13.8px;color:var(--muted)}

/* empty */
.empty-state{
  text-align:center;padding:64px 24px;border:1px dashed var(--line);border-radius:var(--radius-l);background:#fff;
}
.empty-state i{font-size:34px;color:#B6C0BA;margin-bottom:16px;display:block}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--muted);margin-bottom:22px}

/* related */
.rel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:22px}
.rel-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-s);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:rgba(0,230,184,.6)}
.rel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#E9EFEA}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.05)}
.rel-thumb .chip{position:absolute;left:12px;top:12px;background:rgba(11,14,17,.78);color:var(--teal);border-color:rgba(0,230,184,.45);backdrop-filter:blur(6px)}
.rel-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:17px;line-height:1.45}
.rel-body p{font-size:14px;color:var(--muted)}
.rel-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}
.rel-foot a{color:#00806a;font-weight:700}
.rel-foot a:hover{color:var(--orange)}

/* faq */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .24s ease,box-shadow .24s ease}
.faq-item[open]{border-color:rgba(0,230,184,.6);box-shadow:var(--shadow-s)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:22px;font-weight:400;color:var(--teal);transition:transform .24s ease;line-height:1;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open] summary{box-shadow:inset 3px 0 0 var(--teal)}
.faq-body{padding:0 20px 20px;color:var(--muted);font-size:15px}

/* cta */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;color:#fff;
  background:var(--dark) url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  padding:56px 44px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(700px 320px at 85% 10%,rgba(0,230,184,.26),transparent 62%),linear-gradient(120deg,rgba(11,14,17,.94),rgba(11,14,17,.78));
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(24px,3vw,34px);max-width:660px}
.cta-band p{margin-top:14px;color:#B9C2CA;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.back-row{margin-top:26px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;font-size:14px;color:var(--muted)}

/* footer */
.site-footer{background:var(--dark);color:#9AA4AE;padding:64px 0 30px;margin-top:20px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.foot-brand .brand{margin-bottom:16px}
.foot-brand p{font-size:14px;line-height:1.8;max-width:340px}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.foot-col ul{display:grid;gap:10px}
.foot-col a{font-size:14px;color:#9AA4AE}
.foot-col a:hover{color:var(--teal)}
.foot-contact li{display:flex;gap:10px;font-size:14px;align-items:flex-start;line-height:1.7}
.foot-contact i{color:var(--teal);margin-top:4px}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid #1F262C;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13.5px;
}
.foot-note{margin-top:14px;font-size:13px;color:#6C7681}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(6,9,12,.6);opacity:0;visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease;z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;z-index:90;
  background:#0E1317;border-left:1px solid #1F262C;
  transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  padding:22px;display:flex;flex-direction:column;gap:8px;overflow:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{width:40px;height:40px;border-radius:11px;border:1px solid #2A323A;color:#E6EBEF}
.drawer-close:hover{border-color:var(--teal);color:var(--teal)}
.drawer-label{font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:#6C7681;font-family:var(--font-num);margin:14px 0 6px}
.drawer a{
  display:block;padding:12px 14px;border-radius:12px;color:#D5DBE1;font-size:15px;
  border:1px solid transparent;
}
.drawer a:hover{background:#141A1F;border-color:#222A31;color:#fff}
.drawer a.active{background:var(--teal-dim);color:var(--teal);border-color:rgba(0,230,184,.35)}
.drawer .btn{margin-top:16px}

@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:32px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .toc{position:static}
  .toc-toggle{
    display:flex;align-items:center;justify-content:space-between;width:100%;
    padding:16px 18px;border-radius:14px;border:1px solid var(--line);background:#fff;
    font-weight:700;font-size:15px;box-shadow:var(--shadow-s);
  }
  .toc-card{display:none}
  .toc-card.open{display:block}
  .tips-strip{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .section{padding:60px 0}
  .reader{padding:28px 24px 34px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .nav-wrap{min-height:64px;gap:14px}
  .brand-sub{display:none}
  .article-hero{padding:32px 0 44px}
  .cover-figure img{aspect-ratio:4/3}
  .cta-band{padding:38px 22px;border-radius:20px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column}
  .section{padding:48px 0}
  .rel-grid{grid-template-columns:1fr}
}
@media (max-width:519px){
  .btn{width:100%}
  .nav-cta .btn{display:none}
  .article-meta{gap:10px 16px}
  .cta-actions .btn{width:100%}
}

/* roulang page: category1 */
:root{
  --ink:#101418;
  --dark:#0B0E11;
  --accent:#00E6B8;
  --accent-soft:rgba(0,230,184,.10);
  --orange:#FF6B2C;
  --gold:#F5C451;
  --bg:#F5F7F4;
  --card:#FFFFFF;
  --line:#E4E9E2;
  --text:#14181D;
  --muted:#5C6570;
  --danger:#E5484D;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(10,15,20,.06);
  --sh-2:0 16px 40px rgba(10,15,20,.12);
  --sh-accent:0 10px 30px rgba(0,230,184,.28);
  --container:1240px;
  --font:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.25;color:var(--ink);}
p{margin:0;}
:focus-visible{outline:3px solid rgba(0,230,184,.55);outline-offset:3px;border-radius:6px;}

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

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,14,18,.92);
  backdrop-filter:blur(14px);
  border-bottom:1px solid #1F262C;
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:70px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,#00E6B8,#0e8a74);
  color:#04211b;font-weight:900;font-size:19px;
  box-shadow:0 6px 18px rgba(0,230,184,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:800;color:#fff;letter-spacing:.2px;}
.brand-name em{font-style:normal;color:var(--accent);}
.brand-sub{font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.42);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-links a{
  position:relative;display:inline-block;
  padding:9px 14px;border-radius:var(--r-pill);
  font-size:14.5px;color:rgba(255,255,255,.74);
  transition:color .22s ease,background .22s ease,transform .22s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06);transform:translateY(-1px);}
.nav-links a.active{background:var(--accent-soft);color:var(--accent);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  color:#fff;font-size:18px;background:rgba(255,255,255,.08);
  transition:background .2s ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.16);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;letter-spacing:.2px;
  transition:transform .2s ease,background .22s ease,color .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.btn--primary{
  background:var(--ink);color:var(--accent);
  border:1px solid rgba(0,230,184,.55);
  box-shadow:0 6px 18px rgba(0,0,0,.18);
}
.btn--primary:hover{background:var(--accent);color:#04211b;border-color:var(--accent);box-shadow:var(--sh-accent);transform:translateY(-2px);}
.btn--primary:active{transform:scale(.98);}
.btn--ghost{
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.28);
}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.btn--ghost:active{transform:scale(.98);}
.btn--outline{
  background:#fff;color:var(--ink);border:1px solid var(--line);
}
.btn--outline:hover{border-color:var(--accent);color:#0b7f68;transform:translateY(-2px);box-shadow:var(--sh-1);}
.btn--sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.spinner{
  width:15px;height:15px;border-radius:50%;
  border:2px solid rgba(0,230,184,.35);border-top-color:var(--accent);
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- Drawer ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:84vw;z-index:90;
  background:#0B0E11;border-left:1px solid #1F262C;
  padding:24px 22px;transform:translateX(105%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-title{color:#fff;font-size:15px;font-weight:700;letter-spacing:.06em;}
.drawer-close{width:38px;height:38px;border-radius:10px;color:#fff;background:rgba(255,255,255,.08);}
.drawer-close:hover{background:rgba(255,255,255,.18);}
.drawer-group{margin-bottom:20px;}
.drawer-group h5{margin:0 0 8px;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.35);}
.drawer-group a{
  display:block;padding:11px 12px;border-radius:10px;color:rgba(255,255,255,.78);font-size:15px;
  transition:background .2s ease,color .2s ease;
}
.drawer-group a:hover,.drawer-group a.active{background:var(--accent-soft);color:var(--accent);}
.overlay{
  position:fixed;inset:0;background:rgba(6,9,12,.6);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.overlay.show{opacity:1;visibility:visible;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#0B0E11 0%,#101418 62%,#161d21 100%);
  padding:64px 0 72px;
  isolation:isolate;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.32;z-index:-2;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(680px 340px at 12% 6%,rgba(0,230,184,.22),transparent 68%),
    radial-gradient(560px 300px at 92% 88%,rgba(255,107,44,.18),transparent 70%),
    linear-gradient(180deg,rgba(11,14,17,.72),rgba(11,14,17,.94));
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.5);margin-bottom:22px;}
.crumb a:hover{color:var(--accent);}
.crumb span.sep{opacity:.45;}
.crumb .cur{color:rgba(255,255,255,.82);}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:var(--r-pill);
  background:rgba(0,230,184,.12);border:1px solid rgba(0,230,184,.34);
  color:var(--accent);font-size:13px;font-weight:700;letter-spacing:.04em;
  margin-bottom:20px;
}
.hero-tag .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(0,230,184,.6);animation:pulse 2s infinite;}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(0,230,184,.55);}
  70%{box-shadow:0 0 0 10px rgba(0,230,184,0);}
  100%{box-shadow:0 0 0 0 rgba(0,230,184,0);}
}
.hero h1{
  color:#fff;font-size:clamp(30px,4.4vw,50px);font-weight:900;letter-spacing:-.02em;
  margin-bottom:18px;
}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero-sub{
  color:rgba(255,255,255,.74);font-size:16.5px;max-width:640px;margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;
}
.fact{
  flex:1 1 150px;min-width:140px;
  padding:14px 16px;border-radius:var(--r-md);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
}
.fact b{display:block;font-family:"Barlow Condensed","DIN Alternate",var(--font);font-size:24px;color:var(--accent);line-height:1.2;}
.fact span{font-size:13px;color:rgba(255,255,255,.6);}

/* vertical media card */
.vcard{
  position:relative;width:100%;max-width:310px;margin:0 auto;
  aspect-ratio:9/16;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 26px 60px rgba(0,0,0,.55);
  background:linear-gradient(160deg,#1a2228,#0d1114);
}
.vcard img{width:100%;height:100%;object-fit:cover;opacity:.92;}
.vcard::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,11,14,.15) 0%,rgba(8,11,14,.05) 42%,rgba(8,11,14,.88) 100%);
}
.vcard-badge{
  position:absolute;top:14px;left:14px;z-index:2;
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:var(--r-pill);
  background:rgba(255,107,44,.92);color:#fff;font-size:12px;font-weight:700;
}
.vcard-play{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:2;
  width:66px;height:66px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(0,230,184,.92);color:#04211b;font-size:22px;
  box-shadow:0 0 0 10px rgba(0,230,184,.16);
  transition:transform .24s ease,box-shadow .24s ease;
}
.vcard:hover .vcard-play{transform:translate(-50%,-50%) scale(1.08);box-shadow:0 0 0 16px rgba(0,230,184,.14);}
.vcard-info{position:absolute;left:16px;right:16px;bottom:16px;z-index:2;}
.vcard-info h3{color:#fff;font-size:16px;margin-bottom:4px;}
.vcard-info p{font-size:12.5px;color:rgba(255,255,255,.7);}
.progress{height:3px;border-radius:3px;background:rgba(255,255,255,.24);margin-top:12px;overflow:hidden;}
.progress i{display:block;height:100%;width:38%;border-radius:3px;background:linear-gradient(90deg,var(--accent),var(--gold));}

/* ---------- Sections ---------- */
.section{padding:84px 0;}
.section--tight{padding:64px 0;}
.section--dark{background:var(--dark);}
.section--dark h2,.section--dark h3{color:#fff;}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-kicker{
  display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;
  color:#0b8a71;margin-bottom:12px;
}
.section--dark .sec-kicker{color:var(--accent);}
.sec-head h2{font-size:clamp(24px,3vw,35px);margin-bottom:14px;}
.sec-head p{color:var(--muted);font-size:15.5px;}
.section--dark .sec-head p{color:rgba(255,255,255,.66);}

/* ---------- Steps layout ---------- */
.step-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:48px;align-items:start;}
.step-list{display:flex;flex-direction:column;gap:16px;}
.step{
  display:flex;gap:18px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(0,230,184,.6);}
.step-num{
  flex:0 0 auto;width:44px;height:44px;border-radius:12px;
  display:grid;place-items:center;
  font-family:"Barlow Condensed","DIN Alternate",var(--font);
  font-size:19px;font-weight:800;color:#04211b;
  background:linear-gradient(150deg,#00E6B8,#12b394);
}
.step-body h3{font-size:18px;margin-bottom:6px;}
.step-body p{color:var(--muted);font-size:14.8px;}
.step-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;
  background:#F1F5F2;color:#3d4650;border:1px solid var(--line);
}
.chip--accent{background:var(--accent-soft);color:#0b836c;border-color:rgba(0,230,184,.35);}
.chip--warm{background:rgba(255,107,44,.1);color:#c34d17;border-color:rgba(255,107,44,.3);}
.step-side{position:sticky;top:96px;}
.step-side .note{
  margin-top:20px;padding:18px 20px;border-radius:var(--r-md);
  background:#FFF7EE;border:1px solid rgba(255,107,44,.28);
  font-size:14px;color:#8a4415;
}
.step-side .note strong{color:#b8510f;}

/* ---------- Horizontal cards ---------- */
.hscroll{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 2px 18px;margin:0 -2px;
  scrollbar-width:thin;
}
.hscroll::-webkit-scrollbar{height:6px;}
.hscroll::-webkit-scrollbar-thumb{background:rgba(16,20,24,.18);border-radius:6px;}
.hcard{
  flex:0 0 288px;scroll-snap-align:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.hcard:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(0,230,184,.6);}
.hcard i.ico{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  font-size:19px;color:#0b836c;background:var(--accent-soft);margin-bottom:16px;
}
.hcard h3{font-size:17px;margin-bottom:8px;}
.hcard p{font-size:14.3px;color:var(--muted);flex:1;}
.hcard .go{
  margin-top:18px;display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:700;color:#0b836c;
  transition:gap .2s ease,color .2s ease;
}
.hcard:hover .go{gap:11px;color:var(--accent);}

/* ---------- Tips ---------- */
.tips{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;}
.tip{
  display:flex;gap:14px;padding:20px 22px;border-radius:var(--r-md);
  background:var(--card);border:1px solid var(--line);border-left:3px solid var(--accent);
  box-shadow:var(--sh-1);
}
.tip i{color:var(--orange);font-size:17px;margin-top:4px;}
.tip h4{font-size:15.5px;margin-bottom:5px;}
.tip p{font-size:14px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:0 20px;overflow:hidden;transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-item.open{border-color:rgba(0,230,184,.6);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;text-align:left;font-size:16px;font-weight:700;color:var(--ink);
}
.faq-q .plus{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;font-size:13px;color:#0b836c;
  background:var(--accent-soft);transition:transform .26s ease,background .26s ease;
}
.faq-item.open .faq-q .plus{transform:rotate(45deg);background:rgba(0,230,184,.24);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-a p{padding:0 0 20px;font-size:14.8px;color:var(--muted);border-left:3px solid var(--accent);padding-left:14px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(120deg,#0B0E11 0%,#151d21 60%,#1b2226 100%);
  border:1px solid #232b31;
  padding:56px 48px;
  display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:34px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,230,184,.28),transparent 68%);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,32px);margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.68);font-size:15.4px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;position:relative;z-index:2;}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.68);padding:64px 0 28px;border-top:1px solid #1F262C;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:40px;border-bottom:1px solid #1F262C;}
.foot-brand .brand{margin-bottom:16px;}
.foot-brand p{font-size:14px;color:rgba(255,255,255,.58);max-width:360px;}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.foot-col ul{display:flex;flex-direction:column;gap:10px;}
.foot-col ul a{font-size:14px;color:rgba(255,255,255,.62);transition:color .2s ease,padding-left .2s ease;}
.foot-col ul a:hover{color:var(--accent);padding-left:4px;}
.foot-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.62);}
.foot-contact i{color:var(--accent);margin-top:5px;}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:22px;font-size:13.5px;color:rgba(255,255,255,.5);}
.foot-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.42);}

/* ---------- Mobile sticky CTA ---------- */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(11,14,17,.96);border-top:1px solid #1F262C;
  padding:12px 16px;gap:12px;backdrop-filter:blur(12px);
}
.sticky-cta .btn{flex:1;}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .hero-grid{gap:36px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-cta .btn--primary{display:none;}
  .hero-grid{grid-template-columns:1fr;}
  .vcard{max-width:280px;}
  .step-layout{grid-template-columns:1fr;}
  .step-side{position:static;}
  .cta-band{grid-template-columns:1fr;padding:44px 32px;}
  .cta-actions{justify-content:flex-start;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .nav-wrap{height:64px;gap:14px;}
  .brand-sub{display:none;}
  .hero{padding:44px 0 52px;}
  .hero-sub{font-size:15.4px;}
  .hero-actions .btn{flex:1 1 auto;}
  .fact{flex:1 1 46%;}
  .section{padding:52px 0;}
  .section--tight{padding:44px 0;}
  .sec-head{margin-bottom:32px;}
  .step{padding:18px 18px;gap:14px;}
  .step-num{width:38px;height:38px;font-size:16px;}
  .hcard{flex:0 0 258px;padding:20px;}
  .cta-band{padding:34px 22px;border-radius:16px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;padding-bottom:28px;}
  .foot-bottom{flex-direction:column;gap:6px;}
  .sticky-cta{display:flex;}
  body{padding-bottom:76px;}
}
@media (max-width:519px){
  .hero h1{font-size:28px;}
  .hcard{flex:0 0 84%;}
  .btn{padding:0 18px;font-size:14.5px;}
  .fact b{font-size:21px;}
}

/* roulang page: category2 */
:root{
  --ink:#101418;
  --teal:#00E6B8;
  --teal-deep:#00b894;
  --orange:#FF6B2C;
  --gold:#F5C451;
  --bg:#F5F7F4;
  --dark:#0B0E11;
  --dark-2:#12171C;
  --line:#1F262C;
  --card:#FFFFFF;
  --border:#E4E9E2;
  --text:#14181D;
  --muted:#5C6570;
  --danger:#E5484D;
  --radius-s:12px;
  --radius:16px;
  --radius-l:20px;
  --shadow-s:0 4px 14px rgba(10,15,20,.05);
  --shadow:0 8px 24px rgba(10,15,20,.06);
  --shadow-h:0 16px 40px rgba(10,15,20,.12);
  --gutter:24px;
  --max:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.015em;line-height:1.28;color:var(--ink);}
p{margin:0;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
:focus-visible{outline:3px solid rgba(0,230,184,.75);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--gutter);}
.num{font-family:"DIN Alternate","Barlow Condensed","HarmonyOS Sans SC",sans-serif;font-variant-numeric:tabular-nums;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,14,18,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.nav-wrap{display:flex;align-items:center;gap:20px;min-height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,#00E6B8,#0a9c7d);
  color:#04231c;font-weight:900;font-size:19px;
  box-shadow:0 6px 18px rgba(0,230,184,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-size:17px;font-weight:800;color:#fff;letter-spacing:-.02em;}
.brand-name em{font-style:normal;color:var(--teal);}
.brand-sub{font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:#7A848E;margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-links a{
  position:relative;
  padding:9px 14px;border-radius:999px;
  font-size:14.5px;color:#C6CDD4;font-weight:500;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease,transform .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--teal);border-radius:2px;opacity:0;transform:scaleX(.4);
  transition:opacity .2s ease,transform .2s ease;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06);transform:translateY(-1px);}
.nav-links a.active{color:var(--teal);background:rgba(0,230,184,.10);}
.nav-links a.active::after{opacity:1;transform:scaleX(1);}
.nav-cta{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:11px;
  border:1px solid #2A323A;color:#E7ECEF;font-size:17px;
  align-items:center;justify-content:center;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--teal);color:var(--teal);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:0 22px;border-radius:12px;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn i{font-size:14px;}
.btn--primary{
  background:#12171C;color:var(--teal);
  border-color:rgba(0,230,184,.55);
  box-shadow:0 6px 18px rgba(0,230,184,.14);
}
.btn--primary:hover{
  background:var(--teal);color:#052b22;border-color:var(--teal);
  transform:translateY(-2px);
  box-shadow:0 10px 30px rgba(0,230,184,.28);
}
.btn--primary:active{transform:translateY(0) scale(.98);}
.btn--ghost{
  background:transparent;color:#E7ECEF;border-color:#39424B;
}
.btn--ghost:hover{border-color:var(--teal);color:var(--teal);transform:translateY(-2px);}
.btn--ghost:active{transform:scale(.98);}
.btn--light{
  background:#fff;color:var(--ink);border-color:var(--border);
  box-shadow:var(--shadow-s);
}
.btn--light:hover{border-color:var(--teal);color:#0a7a63;transform:translateY(-2px);box-shadow:var(--shadow-h);}
.btn--sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.btn.is-loading{pointer-events:none;opacity:.75;}
.btn.is-loading::before{
  content:"";width:14px;height:14px;border-radius:50%;
  border:2px solid rgba(0,230,184,.35);border-top-color:var(--teal);
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
.nav-cta .btn{min-height:42px;padding:0 18px;font-size:14px;}

/* ============ Hero ============ */
.hero-cat{
  position:relative;overflow:hidden;
  padding:74px 0 54px;
  background:var(--dark) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;
}
.hero-cat::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(620px 320px at 12% 18%, rgba(0,230,184,.20), transparent 68%),
    radial-gradient(520px 340px at 90% 82%, rgba(255,107,44,.16), transparent 70%),
    linear-gradient(180deg, rgba(9,12,16,.80), rgba(9,12,16,.95));
}
.hero-cat::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.45;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:66px 66px;
}
.hero-inner{position:relative;z-index:2;max-width:840px;}
.crumb{display:flex;align-items:center;gap:9px;font-size:13px;color:#8A949E;margin-bottom:20px;}
.crumb a:hover{color:var(--teal);}
.crumb span.sep{color:#39424B;}
.crumb .cur{color:#C6CDD4;}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  padding:6px 15px;border-radius:999px;
  background:rgba(0,230,184,.12);
  border:1px solid rgba(0,230,184,.32);
  color:var(--teal);font-size:13px;font-weight:600;letter-spacing:.04em;
  margin-bottom:22px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px rgba(0,230,184,.18);animation:pulse 2s ease-in-out infinite;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.35;}}
.hero-cat h1{
  color:#fff;
  font-size:clamp(30px,4.4vw,50px);
  font-weight:900;letter-spacing:-.03em;line-height:1.16;
}
.hero-cat h1 em{font-style:normal;color:var(--teal);}
.hero-sub{
  margin-top:22px;max-width:720px;
  font-size:16.5px;line-height:1.85;color:#B6BFC7;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;
  padding-top:24px;border-top:1px solid rgba(255,255,255,.10);
}
.hero-meta div{display:flex;flex-direction:column;gap:3px;}
.hero-meta strong{font-size:19px;font-weight:800;color:#fff;font-family:"DIN Alternate","HarmonyOS Sans SC",sans-serif;}
.hero-meta span{font-size:12.5px;color:#8A949E;letter-spacing:.02em;}

/* ============ 筛选 chips ============ */
.chipbar-wrap{
  background:#12171C;
  border-bottom:1px solid var(--line);
  position:relative;z-index:3;
}
.chipbar{
  display:flex;align-items:center;gap:10px;
  padding:15px 0;overflow-x:auto;scrollbar-width:none;
}
.chipbar::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:999px;
  border:1px solid #333C45;
  background:rgba(255,255,255,.03);
  color:#B6BFC7;font-size:14px;font-weight:600;white-space:nowrap;
  transition:all .2s ease;
}
.chip i{font-size:12px;opacity:.8;}
.chip:hover{border-color:var(--teal);color:var(--teal);transform:translateY(-2px);}
.chip.is-active{
  background:rgba(0,230,184,.12);
  border-color:rgba(0,230,184,.55);
  color:var(--teal);
}
.chipbar-note{
  margin-left:auto;font-size:12.5px;color:#6C757E;white-space:nowrap;padding-left:16px;
}

/* ============ 板块通用 ============ */
.section{padding:76px 0;}
.section--tight{padding:56px 0;}
.section--alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{max-width:760px;margin-bottom:42px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.kicker{
  display:inline-block;
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--teal-deep);margin-bottom:14px;
}
.section-title{font-size:clamp(24px,3vw,34px);font-weight:900;}
.section-desc{margin-top:16px;font-size:15.5px;color:var(--muted);line-height:1.85;}

/* ============ 问答卡 ============ */
.qa-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.qa-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-l);
  padding:28px;
  box-shadow:var(--shadow);
  display:flex;flex-direction:column;gap:16px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.qa-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:rgba(0,230,184,.6);}
.qa-card__head{display:flex;align-items:flex-start;gap:14px;}
.qa-icon{
  flex-shrink:0;width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;
  background:rgba(0,230,184,.12);
  border:1px solid rgba(0,230,184,.30);
  color:#0a7a63;font-size:17px;
}
.qa-card h3{font-size:19px;font-weight:800;line-height:1.45;}
.qa-card__lead{font-size:14.5px;color:var(--muted);line-height:1.85;}
.qa-list{display:flex;flex-direction:column;gap:10px;margin-top:2px;}
.qa-list li{
  position:relative;padding-left:26px;
  font-size:14.5px;color:#3A4249;line-height:1.75;
}
.qa-list li::before{
  content:"";position:absolute;left:6px;top:9px;
  width:7px;height:7px;border-radius:50%;
  background:var(--teal);box-shadow:0 0 0 3px rgba(0,230,184,.16);
}
.qa-card__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px;}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:8px;
  background:#F2F5F1;border:1px solid var(--border);
  color:#5C6570;font-size:12.5px;font-weight:600;
}
.tag--orange{background:rgba(255,107,44,.10);border-color:rgba(255,107,44,.28);color:#C24E17;}
.tag--gold{background:rgba(245,196,81,.16);border-color:rgba(245,196,81,.40);color:#8A6B14;}

/* ============ 对比卡 ============ */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.compare-card{
  border-radius:var(--radius-l);
  padding:30px;
  border:1px solid var(--border);
  background:var(--card);
  box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease;
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);}
.compare-card--safe{border-top:4px solid var(--teal);}
.compare-card--risk{border-top:4px solid var(--orange);}
.compare-head{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.compare-head .ico{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:16px;
}
.compare-card--safe .ico{background:rgba(0,230,184,.14);color:#0a7a63;}
.compare-card--risk .ico{background:rgba(255,107,44,.12);color:#C24E17;}
.compare-head h3{font-size:19px;}
.compare-list{display:flex;flex-direction:column;gap:12px;}
.compare-list li{
  display:flex;gap:11px;align-items:flex-start;
  font-size:14.5px;color:#3A4249;line-height:1.72;
}
.compare-list li i{margin-top:5px;font-size:13px;flex-shrink:0;}
.compare-card--safe .compare-list i{color:var(--teal-deep);}
.compare-card--risk .compare-list i{color:var(--orange);}

/* ============ 图文条 ============ */
.media-strip{
  display:grid;grid-template-columns:1.05fr .95fr;gap:0;
  border-radius:var(--radius-l);
  overflow:hidden;
  border:1px solid var(--border);
  background:#fff;
  box-shadow:var(--shadow);
}
.media-strip__img{
  position:relative;min-height:340px;
  background:#12171C url('/assets/images/coverpic/cover-5.png') center/cover no-repeat;
}
.media-strip__img::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,14,17,.10),rgba(11,14,17,.55));
}
.media-badge{
  position:absolute;top:20px;left:20px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;
  background:rgba(11,14,17,.78);border:1px solid rgba(0,230,184,.4);
  color:var(--teal);font-size:12.5px;font-weight:700;letter-spacing:.04em;
}
.media-strip__body{padding:42px 40px;display:flex;flex-direction:column;justify-content:center;}
.media-strip__body h2{font-size:clamp(22px,2.5vw,29px);margin-bottom:16px;}
.media-strip__body p{color:var(--muted);font-size:15px;line-height:1.85;}
.point-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.point-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 15px;border-radius:10px;
  background:#F5F7F4;border:1px solid var(--border);
  font-size:13.5px;font-weight:600;color:#39424B;
}
.point-pill i{color:var(--teal-deep);font-size:12px;}

/* ============ 更新说明 ============ */
.update-list{display:flex;flex-direction:column;gap:14px;}
.update-item{
  display:flex;gap:18px;align-items:flex-start;
  background:#fff;border:1px solid var(--border);
  border-radius:var(--radius);
  padding:20px 24px;
  box-shadow:var(--shadow-s);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.update-item:hover{transform:translateY(-3px);border-color:rgba(0,230,184,.55);box-shadow:var(--shadow);}
.update-item .u-time{
  flex-shrink:0;font-size:13px;font-weight:700;color:#0a7a63;
  background:rgba(0,230,184,.12);border:1px solid rgba(0,230,184,.3);
  padding:5px 12px;border-radius:8px;white-space:nowrap;
}
.update-item .u-body h3{font-size:16.5px;margin-bottom:6px;}
.update-item .u-body p{font-size:14px;color:var(--muted);line-height:1.75;}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--border);
  border-radius:14px;overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item[open]{border-color:rgba(0,230,184,.6);box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:18px 20px;
  display:flex;align-items:center;gap:16px;
  font-size:16px;font-weight:700;color:var(--ink);
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:var(--teal);border-radius:0 3px 3px 0;
  opacity:0;transition:opacity .22s ease;
}
.faq-item[open] summary::before{opacity:1;}
.faq-item summary .plus{
  margin-left:auto;flex-shrink:0;
  width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;
  background:#F2F5F1;color:#5C6570;font-size:13px;
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-item[open] summary .plus{transform:rotate(45deg);background:rgba(0,230,184,.16);color:#0a7a63;}
.faq-item summary:hover{color:#0a7a63;}
.faq-body{padding:0 20px 20px 38px;font-size:14.5px;color:var(--muted);line-height:1.85;}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--dark) url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  border-radius:var(--radius-l);
  padding:56px 48px;
  color:#fff;
  box-shadow:0 24px 60px rgba(10,15,20,.20);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(520px 280px at 82% 20%, rgba(0,230,184,.24), transparent 68%),
    linear-gradient(180deg, rgba(9,12,16,.80), rgba(9,12,16,.92));
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;}
.cta-inner h2{color:#fff;font-size:clamp(23px,2.8vw,32px);max-width:600px;}
.cta-inner p{margin-top:14px;color:#B6BFC7;font-size:15px;max-width:620px;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-foot{
  position:relative;z-index:2;margin-top:30px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:22px;font-size:13px;color:#8A949E;
}
.cta-foot a{color:#B6BFC7;}
.cta-foot a:hover{color:var(--teal);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:#9AA4AD;
  padding:64px 0 32px;
  margin-top:0;
  border-top:1px solid #1B2127;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:44px;
  padding-bottom:44px;
  border-bottom:1px solid #1B2127;
}
.foot-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:#8A949E;max-width:330px;}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:700;}
.foot-col ul{display:flex;flex-direction:column;gap:11px;}
.foot-col ul li a{font-size:14px;color:#9AA4AD;}
.foot-col ul li a:hover{color:var(--teal);}
.foot-contact li{display:flex;gap:10px;font-size:13.5px;line-height:1.7;align-items:flex-start;color:#8A949E;}
.foot-contact li i{color:var(--teal);margin-top:4px;font-size:13px;}
.foot-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  padding-top:26px;font-size:13px;color:#6C757E;
}
.foot-note{
  margin-top:16px;font-size:12.5px;color:#5F6870;
  border-left:3px solid #262E36;padding-left:12px;line-height:1.7;
}

/* ============ 移动端抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(6,9,12,.6);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(330px,84vw);
  background:#0E1216;border-left:1px solid #1F262C;
  transform:translateX(100%);transition:transform .32s cubic-bezier(.4,0,.2,1);
  z-index:90;padding:22px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid #2A323A;
  color:#C6CDD4;display:grid;place-items:center;font-size:15px;
}
.drawer-close:hover{border-color:var(--teal);color:var(--teal);}
.drawer-group-title{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:#5F6870;margin:14px 0 6px;}
.drawer a.d-link{
  display:block;padding:12px 14px;border-radius:11px;
  color:#C6CDD4;font-size:15px;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.drawer a.d-link:hover,.drawer a.d-link.active{background:rgba(0,230,184,.10);color:var(--teal);}
.drawer .btn{width:100%;margin-top:20px;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--gutter:22px;}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px;}
  .foot-col:last-child{grid-column:1 / -1;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:60px 0;}
  .hero-cat{padding:58px 0 46px;}
  .qa-grid,.compare-grid{grid-template-columns:1fr;}
  .media-strip{grid-template-columns:1fr;}
  .media-strip__img{min-height:250px;}
  .media-strip__body{padding:32px 26px;}
  .cta-band{padding:44px 28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .section{padding:52px 0;}
  .section-head{margin-bottom:30px;}
  .hero-meta{gap:18px;}
  .hero-meta strong{font-size:17px;}
  .hero-actions .btn{flex:1 1 auto;}
  .qa-card,.compare-card{padding:22px;}
  .faq-item summary{padding:16px 16px;font-size:15px;gap:12px;}
  .faq-body{padding:0 16px 18px 16px;}
  .update-item{flex-direction:column;gap:10px;padding:18px;}
  .foot-grid{grid-template-columns:1fr;gap:34px;padding-bottom:34px;}
  .foot-col:last-child{grid-column:auto;}
  .chipbar-note{display:none;}
}
@media (max-width:520px){
  .brand-sub{display:none;}
  .nav-wrap{min-height:62px;gap:12px;}
  .nav-cta .btn{min-height:40px;padding:0 14px;font-size:13px;}
  .hero-cat{padding:46px 0 40px;}
  .hero-sub{font-size:15px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .cta-band{padding:34px 20px;border-radius:16px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .btn{min-height:46px;}
  .point-pill{font-size:13px;padding:8px 12px;}
}