/* roulang page: index */
/* =============== 设计令牌 =============== */
:root{
  --bg-900:#070E17;
  --bg-800:#0B1524;
  --bg-700:#101F33;
  --bg-600:#16293F;
  --brand:#0FD3C0;
  --brand-700:#0A9E90;
  --brand-300:#6FF0E4;
  --accent:#FF6A2B;
  --amber:#FFC24B;
  --text:#E8F1F8;
  --text-dim:#9FB3C6;
  --muted:#6C8095;
  --success:#22C55E;
  --danger:#F43F5E;
  --grad-brand:linear-gradient(120deg,#0FD3C0 0%,#2F9BFF 100%);
  --line:rgba(255,255,255,.06);
  --line-2:rgba(255,255,255,.10);
  --shadow-1:0 1px 2px rgba(0,0,0,.45),0 12px 32px -14px rgba(0,0,0,.7);
  --glow:0 0 0 1px rgba(15,211,192,.35),0 10px 30px -8px rgba(15,211,192,.5);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-btn:10px;
  --r-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --maxw:1200px;
}

/* =============== 基础重置 =============== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--brand-300)}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:rgba(15,211,192,.32)}
.num,.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* 覆盖 Foundation 默认味道 */
body,h1,h2,h3,h4,h5,p,li,td{font-family:inherit}
a.button,button.button{border-radius:var(--r-btn)}
.grid-container{padding-left:0;padding-right:0;max-width:none}

/* =============== 容器 =============== */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px}

/* =============== 按钮 =============== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;
  border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  cursor:pointer;text-align:center;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.btn-primary{background:var(--grad-brand);color:#052226;box-shadow:0 8px 24px -12px rgba(15,211,192,.85)}
.btn-primary:hover{color:#052226;box-shadow:var(--glow);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-outline{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.14);color:var(--text)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.text-link{color:var(--brand);font-size:14px;font-weight:600;border-bottom:1px solid transparent;transition:border-color .24s var(--ease),color .24s var(--ease)}
.text-link:hover{border-bottom-color:var(--brand);color:var(--brand-300);text-underline-offset:4px}

/* =============== 标签 / 徽章 =============== */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 18px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.10);
  color:var(--text-dim);font-size:14px;font-weight:600;
  white-space:nowrap;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.chip:hover{color:var(--text);border-color:rgba(15,211,192,.45);background:rgba(255,255,255,.08)}
.chip.is-active{
  background:linear-gradient(180deg,rgba(15,211,192,.16),rgba(15,211,192,.05));
  border-color:rgba(15,211,192,.55);
  color:var(--text);
  box-shadow:0 0 0 1px rgba(15,211,192,.18),0 8px 22px -14px rgba(15,211,192,.9);
  backdrop-filter:blur(10px);
}
.chip.is-active::after{content:"";display:block;position:absolute}
.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.04em;border:1px solid}
.badge-new{color:var(--brand);border-color:rgba(15,211,192,.5)}
.badge-hot{color:var(--accent);border-color:rgba(255,106,43,.5)}
.badge-off{color:var(--amber);border-color:rgba(255,194,75,.5)}

/* =============== 页头 =============== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,14,23,.55);
  backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(7,14,23,.86);border-bottom-color:var(--line)}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0 10px;transition:padding .24s var(--ease)}
.site-header.is-scrolled .header-top{padding:8px 0 6px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:23px;font-weight:800;letter-spacing:-.02em;color:var(--text)}
.logo:hover{color:var(--text)}
.logo-mark{width:34px;height:34px;border-radius:11px;background:var(--grad-brand);position:relative;flex:none;box-shadow:0 6px 18px -10px rgba(15,211,192,.9)}
.logo-mark::after{content:"";position:absolute;inset:9px;border:2px solid rgba(5,34,38,.85);border-radius:4px}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);color:var(--text-dim);cursor:pointer;
  transition:border-color .24s var(--ease),color .24s var(--ease),background .24s var(--ease);
}
.icon-btn:hover{border-color:rgba(15,211,192,.5);color:var(--brand);background:rgba(255,255,255,.07)}
.header-search{display:none;margin:0 0 12px;position:relative}
.header-search.is-open{display:block}
.header-search input{
  width:100%;height:46px;border-radius:12px;background:var(--bg-700);
  border:1px solid rgba(255,255,255,.12);padding:0 16px;color:var(--text);outline:none;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.header-search input::placeholder{color:var(--muted)}
.header-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,211,192,.25)}
.header-nav-wrap{position:relative;padding-bottom:14px;transition:padding .24s var(--ease)}
.site-header.is-scrolled .header-nav-wrap{padding-bottom:10px}
.chip-nav{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:2px 0}
.chip-nav::-webkit-scrollbar{display:none}
.chip-nav .chip{position:relative;overflow:hidden}
.chip-nav .chip.is-active::before{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
}

/* =============== 首屏 =============== */
.hero{position:relative;isolation:isolate;overflow:hidden;min-height:600px;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.42;transform:scale(1.02)}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(680px 380px at 88% 92%,rgba(15,211,192,.28),rgba(15,211,192,0) 70%);
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,14,23,.62) 0%,rgba(7,14,23,.90) 58%,rgba(7,14,23,1) 100%);
}
.hero-inner{position:relative;z-index:2;display:flex;gap:48px;align-items:center;padding-top:64px;padding-bottom:72px}
.hero-copy{flex:1 1 58%;max-width:660px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:22px;
  padding:7px 16px;border-radius:var(--r-pill);
  background:rgba(15,211,192,.10);border:1px solid rgba(15,211,192,.32);
  color:var(--brand-300);font-size:13px;font-weight:600;letter-spacing:.04em;
}
.hero h1{font-size:clamp(28px,3.6vw,46px);line-height:1.18;font-weight:800;letter-spacing:-.02em}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:var(--text-dim);max-width:560px}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.hero-tags li{
  font-size:13px;font-weight:600;color:var(--text-dim);
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line-2);
}
.glass{
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.hero-card{
  position:relative;flex:0 0 320px;border-radius:var(--r-lg);
  padding:28px 26px 22px;box-shadow:var(--shadow-1);
}
.corner-flag{
  position:absolute;top:0;right:0;
  padding:8px 18px;font-size:12px;font-weight:700;letter-spacing:.04em;
  color:#052226;background:var(--grad-brand);
  border-radius:0 var(--r-lg) 0 var(--r-sm);
  clip-path:polygon(12px 0,100% 0,100% 100%,0 100%);
}
.hero-card h2{font-size:15px;font-weight:700;color:var(--text-dim);letter-spacing:.06em;margin-bottom:18px}
.stat-list li{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:13px 0;border-top:1px solid var(--line)}
.stat-list li:first-child{border-top:0}
.stat-list .num{font-size:26px;font-weight:800;color:var(--text);letter-spacing:-.02em}
.stat-list .num em{font-style:normal;font-size:13px;color:var(--brand);margin-left:3px;font-weight:700}
.stat-list .lbl{font-size:13px;color:var(--text-dim);text-align:right}

/* =============== 板块通用 =============== */
.section{padding:96px 0;position:relative}
.section-alt{background:var(--bg-800)}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:28px;
  padding-bottom:24px;border-bottom:1px solid var(--line);margin-bottom:44px;
}
.sec-head h2{font-size:clamp(24px,2.4vw,30px)}
.sec-head .sec-note{font-size:14px;color:var(--text-dim);max-width:520px;text-align:right}
.sec-head .sec-left{display:flex;flex-direction:column;gap:10px}
.sec-eyebrow{font-size:12.5px;font-weight:700;letter-spacing:.10em;color:var(--brand);text-transform:uppercase}

/* =============== 图文交错 =============== */
.split-row{display:flex;align-items:center;gap:56px;margin-bottom:72px}
.split-row:last-child{margin-bottom:0}
.split-row.reverse{flex-direction:row-reverse}
.split-copy{flex:1 1 0;min-width:0}
.split-copy h3{font-size:24px;margin-bottom:16px}
.split-copy p{color:var(--text-dim);font-size:15.5px;line-height:1.9;margin-bottom:18px}
.split-media{flex:1 1 0;min-width:0;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);position:relative;background:var(--bg-700)}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .32s var(--ease),filter .32s var(--ease);filter:brightness(.95)}
.split-media:hover img{transform:scale(1.03);filter:brightness(1)}
.split-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.split-meta span{font-size:12.5px;font-weight:600;color:var(--text-dim);padding:5px 12px;border-radius:var(--r-pill);border:1px solid var(--line-2);background:rgba(255,255,255,.03)}

/* =============== 优惠阶梯 =============== */
.ladder{display:flex;flex-direction:column;gap:16px;position:relative}
.ladder-item{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 28px;position:relative;
  transition:border-color .28s var(--ease),box-shadow .28s var(--ease),transform .28s var(--ease);
}
.ladder-item:hover{border-color:rgba(15,211,192,.32);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.ladder-item:nth-child(1){width:82%}
.ladder-item:nth-child(2){width:91%;align-self:flex-end}
.ladder-item:nth-child(3){width:100%}
.ladder-item.is-active{border-color:rgba(15,211,192,.45);background:linear-gradient(180deg,rgba(15,211,192,.10),rgba(11,21,36,.6));backdrop-filter:blur(12px)}
.ladder-main{display:flex;flex-direction:column;gap:6px;min-width:0}
.ladder-lv{font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--brand)}
.ladder-main h3{font-size:19px}
.ladder-main p{font-size:14px;color:var(--text-dim)}
.ladder-val{display:flex;align-items:baseline;gap:6px;flex:none}
.ladder-val .num{font-size:34px;font-weight:800;color:var(--accent);letter-spacing:-.02em}
.ladder-val .unit{font-size:14px;font-weight:700;color:var(--accent)}
.ladder-line{height:1px;background:linear-gradient(90deg,rgba(15,211,192,.55),rgba(15,211,192,0));margin:0 0 0 40px}

/* =============== 套餐对比 =============== */
.plan-matrix{display:grid;grid-template-columns:170px repeat(4,minmax(0,1fr));align-items:start}
.plan-col{display:flex;flex-direction:column}
.plan-col.is-featured{position:relative;top:-8px}
.plan-cell{
  min-height:64px;display:flex;align-items:center;padding:0 20px;
  border-bottom:1px solid var(--line);font-size:14px;color:var(--text-dim);
}
.plan-col-labels .plan-cell{color:var(--muted);font-weight:600}
.plan-cell-head{
  min-height:184px;flex-direction:column;align-items:flex-start;justify-content:flex-start;
  gap:8px;padding:26px 20px 20px;border-bottom:1px solid var(--line);
}
.plan-col-labels .plan-cell-head{justify-content:flex-end;color:var(--muted);font-size:13px;font-weight:700;letter-spacing:.06em}
.plan-name{font-size:18px;font-weight:800;color:var(--text)}
.plan-price{display:flex;align-items:baseline;gap:5px;color:var(--text-dim);font-size:13px}
.plan-price .num{font-size:30px;font-weight:800;color:var(--text);letter-spacing:-.02em}
.is-featured .plan-price .num{color:var(--brand)}
.plan-cell-foot{border-bottom:0;padding:18px 20px 0}
.plan-featured-wrap{
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid rgba(15,211,192,.35);border-radius:var(--r-md);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 18px 44px -26px rgba(15,211,192,.9);
}
.plan-plain{background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden}
.plan-badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--r-pill);font-size:12px;font-weight:700;color:var(--amber);border:1px solid rgba(255,194,75,.5)}
.plan-note{margin-top:22px;font-size:13.5px;color:var(--muted)}

/* =============== 资讯卡 =============== */
.news-grid{margin-left:-12px;margin-right:-12px}
.news-grid>.cell{display:flex;padding-bottom:26px}
.news-card{
  display:flex;flex-direction:column;width:100%;
  background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(15,211,192,.32);box-shadow:var(--shadow-1)}
.news-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-700)}
.news-media img{width:100%;height:100%;object-fit:cover;filter:brightness(.95);transition:transform .32s var(--ease),filter .32s var(--ease)}
.news-card:hover .news-media img{transform:scale(1.03);filter:brightness(1)}
.chip-cat{
  position:absolute;left:12px;top:12px;z-index:2;
  padding:5px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;color:var(--text);
  background:rgba(7,14,23,.55);border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.news-body{display:flex;flex-direction:column;flex:1;padding:20px 22px 18px}
.news-title{font-size:18px;line-height:1.5;margin-bottom:12px}
.news-title a{color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a:hover{color:var(--brand)}
.news-sum{font-size:14px;line-height:1.8;color:var(--text-dim);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:18px}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line)}
.news-foot time{font-size:13px;color:var(--muted)}
.read-more{font-size:13.5px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:5px}
.read-more::after{content:"→";transition:transform .24s var(--ease)}
.read-more:hover::after{transform:translateX(3px)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  padding:56px 24px;background:var(--bg-800);border:1px dashed var(--line-2);
  border-radius:var(--r-md);color:var(--text-dim);min-height:220px;justify-content:center;
}
.empty-ico{width:52px;height:52px;border-radius:14px;border:1px solid rgba(15,211,192,.35);background:rgba(15,211,192,.08);display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:22px;font-weight:800}

/* =============== 限时入口 =============== */
.limit-panel{
  border-radius:var(--r-lg);padding:36px 36px;display:flex;align-items:center;gap:40px;flex-wrap:wrap;
  box-shadow:var(--shadow-1);position:relative;overflow:hidden;
}
.limit-panel::after{content:"";position:absolute;right:-80px;top:-120px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(15,211,192,.22),rgba(15,211,192,0) 68%);pointer-events:none}
.limit-cd{display:flex;gap:12px;flex:none;position:relative;z-index:2}
.cd-block{
  width:74px;height:48px;border-radius:8px;border:1px solid rgba(255,194,75,.4);
  background:rgba(7,14,23,.5);display:flex;flex-direction:column;align-items:center;justify-content:center;
}
.cd-block b{font-size:21px;font-weight:800;color:var(--amber);line-height:1;font-variant-numeric:tabular-nums}
.cd-block i{font-style:normal;font-size:11px;color:var(--muted);margin-top:3px}
.limit-info{flex:1 1 340px;min-width:0;position:relative;z-index:2}
.limit-info h3{font-size:22px;margin-bottom:10px}
.limit-info p{font-size:14.5px;color:var(--text-dim);margin-bottom:20px;max-width:620px}

/* =============== 咨询表单 + FAQ =============== */
.consult-layout{display:flex;gap:56px;align-items:flex-start}
.consult-aside{flex:0 0 360px}
.consult-aside h3{font-size:24px;margin-bottom:14px}
.consult-aside p{font-size:15px;color:var(--text-dim);margin-bottom:26px}
.contact-list li{display:flex;gap:12px;padding:14px 0;border-top:1px solid var(--line);font-size:14.5px;color:var(--text-dim)}
.contact-list li:first-child{border-top:0}
.contact-list b{color:var(--text);font-weight:700;flex:none;min-width:76px}
.consult-form-wrap{flex:1 1 auto;min-width:0}
.form-card{background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 30px 26px;box-shadow:var(--shadow-1)}
.form-grid{display:flex;flex-wrap:wrap;margin:0 -10px}
.field{display:flex;flex-direction:column;gap:8px;padding:0 10px;margin-bottom:18px;width:50%}
.field.full{width:100%}
.field label{font-size:13.5px;font-weight:600;color:var(--text-dim)}
.field input,.field select,.field textarea{
  width:100%;height:48px;border-radius:12px;background:var(--bg-700);
  border:1px solid rgba(255,255,255,.12);color:var(--text);padding:0 15px;outline:none;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);
}
.field textarea{height:auto;min-height:112px;padding:12px 15px;resize:vertical;line-height:1.75}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-dim) 50%),linear-gradient(135deg,var(--text-dim) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input::placeholder,.field textarea::placeholder{color:var(--muted)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,211,192,.25)}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger);box-shadow:0 0 0 3px rgba(244,63,94,.18)}
.field .err-msg{display:none;font-size:13px;color:var(--danger)}
.field.has-error .err-msg{display:block}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-dim);margin-bottom:22px}
.check-row input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand);flex:none}
.form-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.form-hint{font-size:13px;color:var(--muted)}
.form-alert{display:none;margin-bottom:20px;padding:12px 16px;border-radius:12px;font-size:14px;font-weight:600}
.form-alert.is-ok{display:block;background:rgba(34,197,94,.12);border:1px solid rgba(34,197,94,.4);color:#8FF0B4}
.form-alert.is-bad{display:block;background:rgba(244,63,94,.12);border:1px solid rgba(244,63,94,.42);color:#FCA3B5}
.faq{margin-top:44px}
.faq h3{font-size:22px;margin-bottom:20px}
.faq-item{background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;transition:border-color .24s var(--ease)}
.faq-item.is-open{border-color:rgba(15,211,192,.32)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:700;color:var(--text);position:relative;
}
.faq-q .arw{flex:none;width:22px;height:22px;border-radius:50%;border:1px solid rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--text-dim);transition:transform .28s var(--ease),border-color .28s var(--ease),color .28s var(--ease)}
.faq-item.is-open .faq-q .arw{transform:rotate(180deg);border-color:rgba(15,211,192,.55);color:var(--brand)}
.faq-item.is-open .faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:var(--brand);border-radius:0 3px 3px 0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-dim)}

/* =============== 页脚 =============== */
.site-footer{background:var(--bg-900);position:relative;padding:68px 0 30px;margin-top:0}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(15,211,192,0),rgba(15,211,192,.7),rgba(255,106,43,.35),rgba(15,211,192,0))}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1fr;gap:40px}
.footer-brand .logo{font-size:20px;margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-dim);line-height:1.85;max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col li{font-size:14px;color:var(--text-dim);padding:6px 0;line-height:1.7}
.footer-col a{color:var(--text-dim)}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* =============== 入场动画 =============== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* =============== 响应式 =============== */
@media (max-width:1279px){
  .container{padding:0 28px}
  .hero-inner{gap:36px}
  .hero-card{flex:0 0 292px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .hero{min-height:0}
  .hero-inner{flex-direction:column;align-items:stretch;padding-top:48px;padding-bottom:56px;gap:32px}
  .hero-card{flex:1 1 auto;width:100%}
  .split-row,.split-row.reverse{flex-direction:column;gap:28px;margin-bottom:56px}
  .split-copy,.split-media{width:100%}
  .consult-layout{flex-direction:column;gap:40px}
  .consult-aside{flex:1 1 auto;width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .header-actions .btn{display:none}
  .chip-nav{mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 26px),transparent 100%);-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 26px),transparent 100%)}
  .plan-matrix{display:block}
  .plan-col-labels{display:none}
  .plan-col{
    display:block;margin-bottom:18px;background:var(--bg-800);
    border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;top:0;
  }
  .plan-col.is-featured{background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));border-color:rgba(15,211,192,.35)}
  .plan-cell{min-height:0;padding:14px 20px;display:flex;justify-content:space-between;align-items:center;gap:14px;color:var(--text)}
  .plan-cell::before{content:attr(data-label);color:var(--text-dim);font-size:13.5px;font-weight:600}
  .plan-col-labels .plan-cell::before{content:none}
  .plan-cell-head{min-height:0;display:flex;flex-direction:column;align-items:flex-start;padding:22px 20px 18px;gap:6px}
  .plan-cell-head::before{content:none}
  .plan-cell-foot{display:block;padding:8px 20px 20px}
  .plan-cell-foot::before{content:none}
  .limit-panel{padding:28px 26px;gap:26px}
}
@media (max-width:639px){
  body{font-size:15.5px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .logo{font-size:19px;gap:8px}
  .logo-mark{width:30px;height:30px;border-radius:9px}
  .logo-mark::after{inset:8px}
  .hero-inner{padding-top:36px;padding-bottom:44px}
  .hero-sub{font-size:15.5px;margin-top:16px}
  .hero-btns{margin-top:26px}
  .hero-btns .btn{flex:1 1 100%}
  .hero-card{padding:22px 20px 16px}
  .stat-list .num{font-size:22px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px}
  .sec-head .sec-note{text-align:left;max-width:none}
  .ladder-item,.ladder-item:nth-child(1),.ladder-item:nth-child(2),.ladder-item:nth-child(3){
    width:100%;flex-direction:column;align-items:flex-start;gap:14px;padding:20px;
  }
  .ladder-line{display:none}
  .field{width:100%}
  .form-card{padding:22px 20px}
  .limit-panel{padding:24px 20px}
  .cd-block{width:64px;height:46px}
  .cd-block b{font-size:18px}
  .limit-info h3{font-size:19px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .faq-q{font-size:15.5px;padding:16px 18px}
  .faq-a p{padding:0 18px 18px;font-size:14.5px}
  .news-grid{margin-left:0;margin-right:0}
  .news-grid>.cell{padding-left:0;padding-right:0}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}
@media (hover:none){
  .news-card:hover,.ladder-item:hover,.btn:hover{transform:none}
}

/* roulang page: article */
:root{
  --bg-900:#070E17;
  --bg-800:#0B1524;
  --bg-700:#101F33;
  --bg-600:#16293F;
  --brand:#0FD3C0;
  --brand-700:#0A9E90;
  --brand-300:#6FF0E4;
  --accent:#FF6A2B;
  --amber:#FFC24B;
  --text:#E8F1F8;
  --text-dim:#9FB3C6;
  --muted:#6C8095;
  --ok:#22C55E;
  --warn:#F43F5E;
  --grad-brand:linear-gradient(120deg,#0FD3C0 0%,#2F9BFF 100%);
  --grad-fade:linear-gradient(180deg,rgba(7,14,23,0) 0%,rgba(7,14,23,.92) 100%);
  --line:rgba(255,255,255,.06);
  --line-strong:rgba(255,255,255,.10);
  --glass-bg:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(0,0,0,.45), 0 12px 32px -14px rgba(0,0,0,.7);
  --glow:0 0 0 1px rgba(15,211,192,.35), 0 10px 30px -8px rgba(15,211,192,.5);
  --tr:240ms cubic-bezier(.22,.61,.36,1);
  --font:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-sm)}
a{color:var(--brand);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--brand-300)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:800;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
::selection{background:rgba(15,211,192,.28)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,14,23,.55);
  backdrop-filter:blur(6px);
  border-bottom:1px solid transparent;
  transition:background var(--tr),border-color var(--tr),box-shadow var(--tr);
}
.site-header.is-scrolled{
  background:rgba(7,14,23,.86);
  backdrop-filter:blur(12px) saturate(140%);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px -20px rgba(0,0,0,.9);
}
.header-top{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:18px 0;
  transition:padding var(--tr);
}
.site-header.is-scrolled .header-top{padding:6px 0}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--text);font-size:30px;font-weight:800;letter-spacing:.01em;
  white-space:nowrap;
}
.logo:hover{color:var(--text)}
.logo-mark{
  width:12px;height:28px;border-radius:3px;
  background:var(--grad-brand);
  box-shadow:var(--glow);
  transform:skewX(-12deg);
  flex:0 0 auto;
}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;background:rgba(255,255,255,.05);
  border:1px solid var(--line-strong);color:var(--text-dim);
  cursor:pointer;transition:all var(--tr);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(15,211,192,.5);background:rgba(15,211,192,.08)}
.icon-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border:0;border-radius:var(--r-btn);
  font-weight:700;font-size:15px;cursor:pointer;
  transition:transform var(--tr),box-shadow var(--tr),background var(--tr),color var(--tr),border-color var(--tr);
  min-width:44px;
}
.btn-primary{background:var(--grad-brand);color:#04231F;box-shadow:0 10px 26px -12px rgba(15,211,192,.8)}
.btn-primary:hover{transform:translateY(-1px);color:#04231F;box-shadow:var(--glow)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid rgba(255,255,255,.18)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.header-search{display:none;padding:0 0 14px}
.header-search.is-open{display:block}
.header-search input{
  width:100%;height:48px;border-radius:var(--r-btn);
  background:var(--bg-700);border:1px solid var(--line-strong);
  padding:0 16px;color:var(--text);
}
.header-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,211,192,.25)}
.header-nav-wrap{position:relative;padding-bottom:14px}
.header-nav-wrap::before,.header-nav-wrap::after{
  content:"";position:absolute;top:0;bottom:14px;width:36px;pointer-events:none;z-index:2;opacity:0;transition:opacity var(--tr);
}
.header-nav-wrap::before{left:0;background:linear-gradient(90deg,var(--bg-900),rgba(7,14,23,0))}
.header-nav-wrap::after{right:0;background:linear-gradient(270deg,var(--bg-900),rgba(7,14,23,0))}
.chip-nav{display:flex;gap:10px;flex-wrap:wrap}
.chip{
  display:inline-flex;align-items:center;height:42px;padding:0 18px;
  border-radius:999px;font-size:14px;font-weight:600;letter-spacing:.04em;
  color:var(--text-dim);background:rgba(255,255,255,.05);
  border:1px solid var(--line-strong);white-space:nowrap;
  transition:all var(--tr);
}
.chip:hover{color:var(--text);border-color:rgba(15,211,192,.4)}
.chip.is-active{
  color:var(--text);
  background:var(--glass-bg);
  border-color:rgba(15,211,192,.65);
  box-shadow:0 0 0 1px rgba(15,211,192,.2),0 8px 24px -14px rgba(15,211,192,.9);
  position:relative;
}
.chip.is-active::after{
  content:"";position:absolute;left:18px;right:18px;bottom:-15px;height:2px;
  background:var(--brand);border-radius:2px;
}

/* ---------- breadcrumb ---------- */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--bg-800)}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:var(--muted);padding:16px 0;
}
.breadcrumb a{color:var(--text-dim)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.18)}
.breadcrumb .current{color:var(--text);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:56px;padding:48px 0 96px;align-items:start;
}
.post-chip{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.04em;
  color:var(--brand);border:1px solid rgba(15,211,192,.45);background:rgba(15,211,192,.06);
}
.article-title{
  font-size:44px;line-height:1.18;font-weight:800;margin:18px 0 16px;
  max-width:22ch;
}
.meta-row{
  display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;
  font-size:14px;color:var(--muted);padding-bottom:22px;border-bottom:1px solid var(--line);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--muted)}

.article-body{max-width:760px;font-size:16px;line-height:1.9;color:#DDE8F2}
.article-body p{margin:0 0 20px}
.article-body h2{
  font-size:28px;margin:44px 0 18px;padding-left:14px;position:relative;color:var(--text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;width:4px;height:18px;
  background:var(--brand);border-radius:2px;
}
.article-body h3{font-size:19px;margin:30px 0 12px;color:var(--text)}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:4px}
.article-body li{position:relative;padding-left:18px;margin-bottom:10px;color:var(--text-dim)}
.article-body li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;
  border-radius:2px;background:var(--brand);transform:rotate(45deg);
}
.article-body blockquote{
  margin:0 0 24px;padding:18px 22px;border-left:3px solid var(--accent);
  background:rgba(255,255,255,.03);border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--text-dim};font-style:normal;
}
.article-body img{margin:8px auto 24px;border-radius:var(--r-sm)}
.article-body figure{margin:0 0 26px}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body table{width:100%;display:block;overflow-x:auto;border-collapse:collapse;margin:0 0 26px}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;font-size:15px}
.article-body th{color:var(--brand-300);font-weight:700}
.article-body code{background:var(--bg-700);padding:2px 6px;border-radius:6px;font-size:14px}
.article-body a{border-bottom:1px solid rgba(15,211,192,.4);text-underline-offset:4px}

.key-points{
  border-left:3px solid var(--brand);
  background:linear-gradient(90deg,rgba(15,211,192,.08),rgba(15,211,192,0));
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:20px 24px;margin:26px 0 34px;
}
.key-points h2{font-size:17px;margin:0 0 12px;padding:0;color:var(--text)}
.key-points h2::before{display:none}
.key-points li{color:var(--text-dim);font-size:15px}

.article-empty{
  min-height:240px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:14px;
  background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-md);padding:32px;
}
.article-empty strong{font-size:20px;color:var(--text)}

.back-row{margin-top:44px;display:flex;justify-content:flex-start}

/* ---------- sidebar ---------- */
.side{position:sticky;top:112px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:16px;margin-bottom:14px;color:var(--text)}
.side-card h3 span{color:var(--brand)}
.side-list li{
  padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;
  display:flex;gap:10px;align-items:flex-start;
}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list a{color:var(--text-dim)}
.side-list a:hover{color:var(--brand)}
.side-list .num{
  font-variant-numeric:tabular-nums;font-weight:700;color:var(--brand);
  font-size:14px;min-width:18px;
}
.author-box{display:flex;gap:12px;align-items:center}
.author-avatar{
  width:44px;height:44px;border-radius:12px;flex:0 0 auto;
  background:var(--grad-brand);opacity:.9;
}
.author-box p{font-size:13.5px;color:var(--muted);line-height:1.6}
.author-box strong{display:block;color:var(--text);font-size:15px}

/* ---------- related ---------- */
.related{padding:0 0 96px}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:32px;
}
.section-head h2{font-size:30px}
.section-head p{font-size:14px;color:var(--muted)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--bg-800);
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  transition:transform var(--tr),border-color var(--tr),box-shadow var(--tr);
}
.card:hover{transform:translateY(-2px);border-color:rgba(15,211,192,.3);box-shadow:var(--shadow-1)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-700)}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 320ms cubic-bezier(.22,.61,.36,1),filter 320ms}
.card:hover .card-media img{transform:scale(1.03);filter:brightness(1)}
.card-media img{filter:brightness(.95)}
.card-tag{
  position:absolute;left:12px;top:12px;
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--text);
  background:rgba(7,14,23,.62);border:1px solid var(--line-strong);
  backdrop-filter:blur(8px);
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{
  font-size:18px;line-height:1.5;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--tr);
}
.card:hover .card-body h3{color:var(--brand)}
.card-body p{
  font-size:14.5px;color:var(--text-dim);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);padding-top:12px;border-top:1px solid var(--line);
}
.card-foot .more{color:var(--brand);font-weight:600}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--bg-800);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:44px 46px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
  margin-bottom:96px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-120px;bottom:-140px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,211,192,.22),rgba(15,211,192,0) 62%);
  pointer-events:none;
}
.cta-band h2{font-size:30px;margin-bottom:14px}
.cta-band p{color:var(--text-dim);font-size:15.5px;margin-bottom:18px}
.cta-list{display:flex;flex-wrap:wrap;gap:10px}
.cta-list span{
  font-size:13px;color:var(--text-dim);border:1px solid var(--line-strong);
  border-radius:999px;padding:6px 14px;
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:6px}

/* ---------- form ---------- */
.form-card{
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 26px 24px;position:relative;z-index:1;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13.5px;color:var(--text-dim);font-weight:600}
.field input,.field select,.field textarea{
  background:var(--bg-800);border:1px solid var(--line-strong);border-radius:var(--r-sm);
  height:48px;padding:0 14px;color:var(--text);transition:border-color var(--tr),box-shadow var(--tr);
  width:100%;
}
.field textarea{height:auto;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,211,192,.25);
}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.6}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand)}
.form-note{font-size:13px;color:var(--muted);margin-top:12px}
.form-alert{
  display:none;margin-bottom:16px;padding:12px 16px;border-radius:var(--r-sm);font-size:14px;
  border:1px solid rgba(34,197,94,.4);background:rgba(34,197,94,.1);color:#B7F7D0;
}
.form-alert.is-show{display:block}

/* ---------- FAQ ---------- */
.faq-block{padding-bottom:96px}
.faq-item{
  background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;transition:border-color var(--tr);
}
.faq-item[open]{border-left:3px solid var(--brand);border-color:rgba(15,211,192,.35)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";width:9px;height:9px;border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(45deg);transition:transform var(--tr);flex:0 0 auto;margin-top:-4px;
}
.faq-item[open] summary::after{transform:rotate(-135deg);margin-top:4px}
.faq-item .faq-answer{padding:0 22px 20px;font-size:15px;color:var(--text-dim);line-height:1.8}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-900);border-top:1px solid var(--line);position:relative}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,rgba(15,211,192,0),rgba(15,211,192,.8),rgba(15,211,192,0));
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1fr;gap:36px;
  padding:56px 0 40px;
}
.footer-brand .logo{font-size:24px;margin-bottom:14px}
.footer-brand p{font-size:14.5px;color:var(--text-dim);line-height:1.8;max-width:36ch}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col li{font-size:14.5px;color:var(--text-dim);margin-bottom:10px;line-height:1.7}
.footer-col a{color:var(--text-dim);border-bottom:1px solid transparent;text-underline-offset:3px;transition:all var(--tr)}
.footer-col a:hover{color:var(--brand);border-bottom-color:rgba(15,211,192,.6)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--muted);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms cubic-bezier(.22,.61,.36,1),transform 520ms cubic-bezier(.22,.61,.36,1)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .article-layout{gap:40px;grid-template-columns:minmax(0,1fr) 280px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .article-layout{grid-template-columns:1fr;gap:40px;padding:36px 0 72px}
  .side{position:static}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr;padding:36px 30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .chip-nav{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;padding-bottom:2px}
  .chip-nav::-webkit-scrollbar{display:none}
  .header-nav-wrap::before,.header-nav-wrap::after{opacity:1}
  .article-title{font-size:34px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .logo{font-size:24px}
  .logo-mark{height:22px;width:10px}
  .header-actions .btn{padding:0 16px;height:44px;font-size:14px}
  .icon-btn{width:44px;height:44px}
  .article-title{font-size:29px;max-width:none}
  .article-body{font-size:15.5px;line-height:1.85}
  .article-body h2{font-size:22px;margin:34px 0 14px}
  .article-body h3{font-size:17.5px}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .section-head h2{font-size:24px}
  .card-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .cta-band{padding:28px 22px;border-radius:var(--r-md)}
  .cta-band h2{font-size:23px}
  .related{padding-bottom:64px}
  .faq-block{padding-bottom:64px}
  .faq-item summary{font-size:16px;padding:16px 18px}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding:40px 0 28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .breadcrumb .current{white-space:normal;max-width:100%}
}
@media (max-width:520px){
  .article-title{font-size:26px}
  .meta-row{font-size:13px;gap:6px 14px}
  .btn{width:100%}
  .header-actions .btn{width:auto}
  .cta-actions{flex-direction:column}
  .key-points{padding:16px 18px}
}
@media (hover:none){
  .card:hover{transform:none}
  .card:hover .card-media img{transform:none}
  .btn-primary:hover{transform:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --bg-900:#070E17;--bg-800:#0B1524;--bg-700:#101F33;--bg-600:#16293F;
  --brand:#0FD3C0;--brand-700:#0A9E90;--brand-300:#6FF0E4;
  --accent:#FF6A2B;--amber:#FFC24B;
  --text:#E8F1F8;--text-dim:#9FB3C6;--muted:#6C8095;
  --ok:#22C55E;--warn:#F43F5E;
  --line:rgba(255,255,255,.06);
  --line-strong:rgba(255,255,255,.12);
  --grad-brand:linear-gradient(120deg,#0FD3C0 0%,#2F9BFF 100%);
  --shadow-1:0 1px 2px rgba(0,0,0,.45),0 12px 32px -14px rgba(0,0,0,.7);
  --glow:0 0 0 1px rgba(15,211,192,.35),0 10px 30px -8px rgba(15,211,192,.5);
  --r-lg:20px;--r-md:16px;--r-sm:12px;--r-btn:10px;--r-chip:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--bg-900);color:var(--text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4,h5{font-family:inherit;color:var(--text);margin:0;line-height:1.25;font-weight:800;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--brand);text-decoration:none;transition:color .24s var(--ease)}
a:hover,a:focus{color:var(--brand-300)}
img{max-width:100%;display:block;border:0}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
::selection{background:rgba(15,211,192,.28)}
.mono,[data-num]{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--gap-section) 0}
.section--tight{padding:56px 0}
.section-head{
  display:flex;align-items:flex-end;gap:24px;justify-content:space-between;
  padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:44px;position:relative;
}
.section-head::after{
  content:"";position:absolute;left:0;bottom:-1px;width:88px;height:2px;
  background:var(--grad-brand);border-radius:2px;
}
.section-head h2{font-size:30px;letter-spacing:-.01em}
.section-head .sub{font-size:14px;color:var(--text-dim);max-width:520px;line-height:1.7}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  letter-spacing:.08em;color:var(--brand-300);text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.8}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);font-weight:700;font-size:15px;
  text-decoration:none;white-space:nowrap;border:1px solid transparent;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.btn-primary{background:var(--grad-brand);color:#04121A;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-1px);color:#04121A;box-shadow:0 0 0 1px rgba(15,211,192,.5),0 14px 34px -8px rgba(15,211,192,.65)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px}
.btn:focus-visible,button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;
}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);border:1px solid var(--line-strong);color:var(--text-dim);
  transition:color .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(15,211,192,.45);background:rgba(15,211,192,.06)}
.text-link{color:var(--brand);font-size:14px;font-weight:600;position:relative;display:inline-flex;align-items:center;gap:6px}
.text-link::after{
  content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--brand);
  transition:width .28s var(--ease);
}
.text-link:hover::after{width:100%}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:transparent;
  transition:background .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(7,14,23,.86);backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 0 14px;transition:padding .24s var(--ease)}
.site-header.is-scrolled .header-top{padding:10px 0 8px}
.logo{
  display:inline-flex;align-items:center;gap:11px;color:var(--text)!important;
  font-size:22px;font-weight:800;letter-spacing:.01em;
}
.logo-mark{
  width:12px;height:26px;flex:0 0 auto;border-radius:3px;background:var(--grad-brand);
  clip-path:polygon(0 0,100% 0,100% 74%,50% 100%,0 74%);box-shadow:0 0 16px rgba(15,211,192,.55);
}
.header-actions{display:flex;align-items:center;gap:14px}
.header-search{
  max-height:0;overflow:hidden;transition:max-height .3s var(--ease),padding .3s var(--ease);
}
.header-search.is-open{max-height:76px;padding-bottom:12px}
.header-search input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-sm);
  background:var(--bg-700);border:1px solid var(--line-strong);color:var(--text);
}
.header-search input::placeholder{color:var(--muted)}
.header-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,211,192,.18);outline:none}
.header-nav-wrap{padding-bottom:14px}
.chip-nav{display:flex;align-items:center;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 18px;border-radius:var(--r-chip);
  font-size:14px;font-weight:600;color:var(--text-dim);background:rgba(255,255,255,.05);
  border:1px solid var(--line);position:relative;white-space:nowrap;
  transition:color .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.chip:hover{color:var(--text);border-color:var(--line-strong);background:rgba(255,255,255,.08)}
.chip.is-active{
  color:var(--text);background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.03));
  border-color:rgba(15,211,192,.55);box-shadow:0 0 18px -6px rgba(15,211,192,.55);
}
.chip.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:-2px;height:2px;border-radius:2px;background:var(--brand);
}

/* ============ page head (category) ============ */
.page-head{
  position:relative;overflow:hidden;background:var(--bg-800);border-bottom:1px solid var(--line);
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.22;filter:saturate(120%);
}
.page-head::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,14,23,.55) 0%,rgba(7,14,23,.92) 100%);
}
.page-head .container{position:relative;z-index:2;padding-top:34px;padding-bottom:34px}
.page-head .band{
  position:absolute;top:0;right:-60px;width:280px;height:100%;
  background:linear-gradient(120deg,rgba(15,211,192,.28),rgba(47,155,255,.06));
  clip-path:polygon(28% 0,100% 0,100% 100%,0 100%);z-index:1;opacity:.55;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.breadcrumb .current{color:var(--text-dim)}
.page-head h1{font-size:44px;line-height:1.18;letter-spacing:-.02em}
.page-head .lead{margin-top:14px;font-size:16px;color:var(--text-dim);max-width:680px}
.head-kpis{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-chip);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;color:var(--text-dim);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.tag--brand{color:var(--brand-300);border-color:rgba(15,211,192,.35);background:rgba(15,211,192,.08)}
.tag--amber{color:var(--amber);border-color:rgba(255,194,75,.35);background:rgba(255,194,75,.07)}

/* ============ flash bar ============ */
.flash{
  background:var(--bg-800);border-bottom:1px solid var(--line);
}
.flash .container{display:flex;align-items:center;gap:18px;padding-top:16px;padding-bottom:16px}
.flash-label{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  color:var(--amber);letter-spacing:.06em;
}
.flash-label .dot{width:7px;height:7px;border-radius:50%;background:var(--amber);box-shadow:0 0 10px var(--amber)}
.flash-track{display:flex;gap:28px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  mask-image:linear-gradient(90deg,transparent 0,#000 24px,#000 calc(100% - 34px),transparent 100%);
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 24px,#000 calc(100% - 34px),transparent 100%);
}
.flash-track::-webkit-scrollbar{display:none}
.flash-item{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-dim);white-space:nowrap}
.flash-item b{color:var(--text);font-weight:700}
.flash-item .t{color:var(--brand);font-variant-numeric:tabular-nums}

/* ============ metrics ============ */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--bg-800);overflow:hidden;
}
.metric{padding:24px 26px;border-right:1px solid var(--line)}
.metric:last-child{border-right:0}
.metric .num{font-size:32px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--text);line-height:1.1}
.metric .num span{font-size:16px;color:var(--brand);margin-left:4px;font-weight:700}
.metric .lb{font-size:12.5px;color:var(--muted);letter-spacing:.06em;margin-top:8px}

/* ============ topic chips ============ */
.topic-strip{position:relative;margin-bottom:34px}
.topic-track{display:flex;gap:10px;overflow-x:auto;padding:4px 2px 10px;scrollbar-width:none;-ms-overflow-style:none}
.topic-track::-webkit-scrollbar{display:none}
.topic{flex:0 0 auto}
.topic.is-on{
  color:var(--text);background:linear-gradient(180deg,rgba(255,255,255,.1),rgba(255,255,255,.03));
  border-color:rgba(15,211,192,.5);box-shadow:0 0 16px -6px rgba(15,211,192,.5);
}

/* ============ timeline ============ */
.timeline{position:relative;padding-left:0}
.timeline::before{
  content:"";position:absolute;left:99px;top:10px;bottom:10px;width:1px;
  background:linear-gradient(180deg,rgba(15,211,192,.5),rgba(255,255,255,.07) 22%,rgba(255,255,255,.07) 78%,rgba(15,211,192,.35));
}
.tl-item{display:grid;grid-template-columns:88px 1fr;column-gap:24px;position:relative;padding-bottom:22px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:93px;top:32px;width:13px;height:13px;border-radius:50%;
  background:var(--bg-900);border:2px solid var(--brand);box-shadow:0 0 0 4px rgba(15,211,192,.12);
}
.tl-date{text-align:right;padding-top:22px;color:var(--muted)}
.tl-date b{display:block;font-size:24px;font-weight:800;color:var(--text);font-variant-numeric:tabular-nums;line-height:1.1}
.tl-date span{font-size:12.5px;letter-spacing:.06em}
.tl-body{
  background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 24px;transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.tl-body:hover{transform:translateY(-2px);border-color:rgba(15,211,192,.3);box-shadow:var(--shadow-1)}
.tl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);margin-bottom:10px}
.tl-meta .cat{color:var(--brand-300);font-weight:600}
.tl-meta .time{font-variant-numeric:tabular-nums}
.tl-body h3{font-size:19px;font-weight:700;line-height:1.45}
.tl-body h3 a{color:var(--text)}
.tl-body h3 a:hover{color:var(--brand)}
.tl-body p{margin-top:8px;font-size:14.5px;color:var(--text-dim);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tl-foot{margin-top:14px;display:flex;align-items:center;justify-content:space-between;gap:14px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-chip);
  font-size:12px;font-weight:600;letter-spacing:.04em;background:transparent;border:1px solid currentColor;
}
.badge--hot{color:var(--accent)}
.badge--new{color:var(--brand)}
.badge--soon{color:var(--amber)}

/* ============ subscribe / editorial ============ */
.split{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center}
.split--rev{grid-template-columns:5fr 7fr}
.panel{
  background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-md);padding:26px;
}
.media-16-9{position:relative;width:100%;aspect-ratio:16/9;border-radius:var(--r-sm);overflow:hidden;background:var(--bg-700)}
.media-4-3{position:relative;width:100%;aspect-ratio:4/3;border-radius:var(--r-sm);overflow:hidden;background:var(--bg-700)}
.media-16-9 img,.media-4-3 img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease),filter .32s var(--ease)}
.media-16-9:hover img,.media-4-3:hover img{transform:scale(1.03);filter:brightness(1.02)}
.check-list li{position:relative;padding-left:20px;margin-bottom:12px;color:var(--text-dim);font-size:15px}
.check-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:2px;background:var(--brand);
}
.check-list li b{color:var(--text)}

/* ============ faq ============ */
.faq-list{display:grid;gap:12px}
.faq-item{background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;position:relative;
  transition:border-color .24s var(--ease)}
.faq-item.is-open{border-color:rgba(15,211,192,.35)}
.faq-item.is-open::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;
  padding:20px 24px;font-size:17px;font-weight:700;color:var(--text);
}
.faq-q .arrow{
  flex:0 0 auto;width:18px;height:18px;border-right:2px solid var(--text-dim);border-bottom:2px solid var(--text-dim);
  transform:rotate(45deg) translateY(-2px);transition:transform .28s var(--ease),border-color .28s var(--ease);
}
.faq-item.is-open .faq-q .arrow{transform:rotate(-135deg) translateY(-2px);border-color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{padding:0 24px 22px;color:var(--text-dim);font-size:15px;line-height:1.8}

/* ============ cta + form ============ */
.cta-wrap{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start}
.cta-panel{
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.1);border-radius:var(--r-lg);padding:30px;
}
.contact-lines li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--text-dim)}
.contact-lines li:last-child{border-bottom:0}
.contact-lines b{color:var(--text);font-weight:700;min-width:74px;display:inline-block}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13.5px;font-weight:600;color:var(--text-dim);letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;background:var(--bg-700);border:1px solid var(--line-strong);border-radius:var(--r-sm);
  color:var(--text);padding:0 14px;height:48px;transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-dim) 50%),linear-gradient(135deg,var(--text-dim) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input::placeholder,.field textarea::placeholder{color:var(--muted)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,211,192,.25)
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--warn)}
.err-msg{font-size:13px;color:var(--warn);display:none}
.field.has-error .err-msg{display:block}
.consent{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-dim);grid-column:1 / -1}
.consent input{width:18px;height:18px;height:18px;flex:0 0 auto;margin-top:3px;accent-color:var(--brand)}
.form-note{grid-column:1 / -1;font-size:13px;color:var(--muted)}
.form-alert{
  grid-column:1 / -1;display:none;align-items:center;gap:10px;padding:12px 16px;border-radius:var(--r-sm);
  font-size:14px;border:1px solid rgba(34,197,94,.4);background:rgba(34,197,94,.1);color:#A8F0C2;
}
.form-alert.is-visible{display:flex}

/* ============ footer ============ */
.site-footer{background:var(--bg-900);border-top:1px solid transparent;position:relative;margin-top:24px}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(15,211,192,.55),rgba(47,155,255,.25),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px}
.footer-brand .logo{font-size:19px;margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--text-dim);line-height:1.8;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--text);margin-bottom:16px}
.footer-col ul li{font-size:14px;color:var(--text-dim);margin-bottom:11px;line-height:1.7}
.footer-col ul li a{color:var(--text-dim);text-decoration:underline;text-decoration-color:transparent;text-underline-offset:3px;transition:text-decoration-color .24s var(--ease),color .24s var(--ease)}
.footer-col ul li a:hover{color:var(--brand);text-decoration-color:var(--brand)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:20px 0 30px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);
}

/* ============ reveal ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ responsive ============ */
@media screen and (max-width:1279px){
  .section{padding:88px 0}
  .page-head h1{font-size:40px}
}
@media screen and (max-width:1023px){
  .container{padding:0 24px}
  .header-nav-wrap{overflow:hidden}
  .chip-nav{
    overflow-x:auto;padding:2px 2px 8px;scrollbar-width:none;
    mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 24px),transparent 100%);
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 24px),transparent 100%);
  }
  .chip-nav::-webkit-scrollbar{display:none}
  .split,.split--rev,.cta-wrap{grid-template-columns:1fr;gap:30px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
  .page-head h1{font-size:34px}
}
@media screen and (max-width:639px){
  :root{--gap-section:56px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:32px}
  .section-head h2{font-size:24px}
  .logo{font-size:18px}
  .logo-mark{width:9px;height:20px}
  .header-actions{gap:10px}
  .header-actions .btn-primary{height:40px;padding:0 14px;font-size:13.5px}
  .icon-btn{width:40px;height:40px}
  .btn{height:46px;padding:0 18px;font-size:14.5px}
  .page-head h1{font-size:28px}
  .page-head .lead{font-size:15px}
  .metrics{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--line)}
  .metric:last-child{border-bottom:0}
  .timeline::before,.tl-item::before{display:none}
  .tl-item{grid-template-columns:1fr;padding-bottom:16px}
  .tl-date{text-align:left;padding:0 0 8px;display:flex;align-items:baseline;gap:8px}
  .tl-date b{font-size:17px}
  .tl-date span{font-size:12px}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --bg-900:#070E17; --bg-800:#0B1524; --bg-700:#101F33; --bg-600:#16293F;
  --brand:#0FD3C0; --brand-700:#0A9E90; --brand-300:#6FF0E4;
  --accent:#FF6A2B; --amber:#FFC24B;
  --text:#E8F1F8; --text-dim:#9FB3C6; --muted:#6C8095;
  --ok:#22C55E; --warn:#F43F5E;
  --grad-brand:linear-gradient(120deg,#0FD3C0 0%,#2F9BFF 100%);
  --line:rgba(255,255,255,.06);
  --line-2:rgba(255,255,255,.10);
  --r-lg:20px; --r-md:16px; --r-sm:12px; --r-btn:10px; --r-pill:999px;
  --shadow-1:0 1px 2px rgba(0,0,0,.45),0 12px 32px -14px rgba(0,0,0,.7);
  --glow:0 0 0 1px rgba(15,211,192,.35),0 10px 30px -8px rgba(15,211,192,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.85;color:var(--text);
  background-color:var(--bg-900);
  background-image:
    radial-gradient(1100px 560px at 82% -12%,rgba(15,211,192,.10),transparent 62%),
    radial-gradient(900px 500px at -6% 18%,rgba(255,106,43,.06),transparent 60%);
  background-repeat:no-repeat;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--brand-300)}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:800}
p{margin:0 0 16px}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
::selection{background:rgba(15,211,192,.32);color:#fff}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--sec) 0}
.section-alt{background:linear-gradient(180deg,rgba(11,21,36,0) 0%,rgba(11,21,36,.85) 22%,rgba(11,21,36,.85) 78%,rgba(11,21,36,0) 100%)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding-bottom:20px;margin-bottom:40px;border-bottom:1px solid var(--line)}
.section-head h2{font-size:clamp(24px,2.6vw,30px);letter-spacing:.005em}
.section-head .head-note{font-size:14px;color:var(--muted);max-width:520px;line-height:1.7}
.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--brand);text-transform:uppercase;margin-bottom:12px}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-weight:700;font-size:15px;letter-spacing:.01em;white-space:nowrap;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease),background .24s var(--ease)}
.btn-primary{background:var(--grad-brand);color:#04211F;box-shadow:0 0 0 1px rgba(15,211,192,.35),0 10px 26px -12px rgba(15,211,192,.75)}
.btn-primary:hover{color:#04211F;transform:translateY(-1px);box-shadow:var(--glow)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:rgba(15,211,192,.6);color:var(--brand)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px;text-decoration:underline;text-decoration-color:transparent;text-underline-offset:4px;transition:text-decoration-color .24s var(--ease)}
.link-arrow:hover{text-decoration-color:currentColor}
.link-arrow svg{transition:transform .24s var(--ease)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ============ 顶栏 ============ */
.site-header{position:sticky;top:0;z-index:80;background:transparent;border-bottom:1px solid transparent;transition:background .24s var(--ease),border-color .24s var(--ease)}
.site-header.is-scrolled{background:rgba(7,14,23,.88);backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);border-bottom-color:var(--line)}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;transition:padding .24s var(--ease)}
.site-header.is-scrolled .header-top{padding:8px 0}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:23px;font-weight:800;color:var(--text);letter-spacing:.005em;line-height:1.2}
.logo:hover{color:var(--text)}
.logo-mark{width:26px;height:26px;flex:0 0 26px;background:var(--grad-brand);box-shadow:0 0 20px -6px rgba(15,211,192,.9);clip-path:polygon(22% 0,100% 0,100% 78%,78% 100%,0 100%,0 22%)}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;border:1px solid var(--line-2);color:var(--text-dim);background:rgba(255,255,255,.03);transition:color .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease)}
.icon-btn:hover{color:var(--brand);border-color:rgba(15,211,192,.5);background:rgba(15,211,192,.08)}
.header-search{display:none;padding-bottom:14px}
.header-search.is-open{display:block}
.header-search input{width:100%;height:46px;padding:0 16px;border-radius:12px;background:var(--bg-700);border:1px solid var(--line-2);color:var(--text)}
.header-search input::placeholder{color:var(--muted)}
.header-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,211,192,.22);outline:none}
.header-nav-wrap{position:relative;padding-bottom:16px}
.chip-nav{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.chip-nav::-webkit-scrollbar{display:none}
.chip{position:relative;display:inline-flex;align-items:center;white-space:nowrap;padding:10px 18px;border-radius:var(--r-pill);background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-dim);font-size:14px;font-weight:600;transition:color .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease)}
.chip:hover{color:var(--text);border-color:rgba(15,211,192,.42);background:rgba(255,255,255,.07)}
.chip.is-active{color:var(--text);background:linear-gradient(180deg,rgba(255,255,255,.11),rgba(255,255,255,.03));border-color:rgba(15,211,192,.6);box-shadow:0 8px 24px -14px rgba(15,211,192,.95)}
.chip.is-active::after{content:"";position:absolute;left:18px;right:18px;bottom:4px;height:2px;border-radius:2px;background:var(--brand)}

/* ============ 分类页窄头部 ============ */
.page-hero{position:relative;overflow:hidden;background:var(--bg-800);padding:40px 0 38px}
.page-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.3}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,14,23,.5) 0%,rgba(7,14,23,.94) 100%)}
.page-hero::after{content:"";position:absolute;right:-80px;top:-30px;width:460px;height:170px;background:linear-gradient(90deg,rgba(15,211,192,.22),rgba(15,211,192,0));clip-path:polygon(14% 0,100% 0,86% 100%,0 100%);pointer-events:none}
.page-hero .container{position:relative;z-index:3}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span{color:rgba(108,128,149,.65)}
.breadcrumb em{font-style:normal;color:var(--text-dim)}
.page-hero h1{font-size:clamp(28px,3.6vw,42px);line-height:1.2;margin-bottom:14px}
.page-hero-sub{max-width:720px;color:var(--text-dim);font-size:16px;margin-bottom:22px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px}
.hero-points li{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--r-pill);border:1px solid var(--line-2);background:rgba(255,255,255,.04);font-size:13px;font-weight:600;color:var(--text-dim)}
.hero-points li i{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(15,211,192,.9)}

/* ============ 场地图文交替 ============ */
.venue-row{display:grid;grid-template-columns:5fr 7fr;gap:36px;align-items:center;padding:28px;background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-lg);margin-bottom:24px;transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease)}
.venue-row:hover{border-color:rgba(15,211,192,.3);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.venue-row.is-rev{grid-template-columns:7fr 5fr}
.venue-row.is-rev .venue-media{order:2}
.venue-row.is-rev .venue-body{order:1}
.venue-media{position:relative;border-radius:var(--r-sm);overflow:hidden;background:var(--bg-700)}
.venue-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .32s var(--ease),filter .32s var(--ease)}
.venue-row:hover .venue-media img{transform:scale(1.03);filter:brightness(1)}
.venue-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,14,23,0) 55%,rgba(7,14,23,.72) 100%);pointer-events:none}
.venue-tag{position:absolute;left:12px;top:12px;z-index:2;padding:5px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.04em;background:rgba(7,14,23,.6);border:1px solid rgba(15,211,192,.5);color:var(--brand-300);backdrop-filter:blur(8px)}
.venue-body h3{font-size:20px;margin-bottom:10px}
.venue-body p{color:var(--text-dim);font-size:15px;margin-bottom:0}
.spec-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:18px 0 20px;padding-top:18px;border-top:1px solid var(--line)}
.spec-label{display:block;font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--muted);margin-bottom:4px}
.spec-val{display:block;font-size:15px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums}

/* ============ 时段 ============ */
.slot-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.slot-card{background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-md);padding:22px;transition:border-color .24s var(--ease),transform .24s var(--ease)}
.slot-card:hover{border-color:rgba(15,211,192,.3);transform:translateY(-2px)}
.slot-card h3{font-size:17px;margin-bottom:6px}
.slot-time{font-size:22px;font-weight:800;color:var(--brand-300);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.slot-meta{font-size:13px;color:var(--muted);margin:10px 0 14px}
.slot-bar{height:6px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden}
.slot-bar i{display:block;height:100%;border-radius:999px;background:var(--grad-brand)}
.slot-card.is-busy .slot-bar i{background:linear-gradient(120deg,#FF6A2B,#FFC24B)}
.slot-note{font-size:12px;color:var(--muted);margin-top:10px;display:block}

/* ============ 预约流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
.step{position:relative;padding:24px 22px;background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-md)}
.step-num{font-size:26px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1}
.step h3{font-size:17px;margin:12px 0 8px}
.step p{font-size:14px;color:var(--text-dim);margin:0}
.steps::after{content:"";position:absolute;left:6%;right:6%;top:0;height:1px;background:linear-gradient(90deg,rgba(15,211,192,0),rgba(15,211,192,.45),rgba(15,211,192,0))}

/* ============ 配套 ============ */
.facility-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.facility{display:flex;gap:14px;padding:20px;border-radius:var(--r-md);background:rgba(255,255,255,.03);border:1px solid var(--line)}
.facility-ico{flex:0 0 38px;width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;background:rgba(15,211,192,.12);border:1px solid rgba(15,211,192,.3);color:var(--brand)}
.facility h3{font-size:16px;margin-bottom:4px}
.facility p{font-size:13px;color:var(--muted);margin:0;line-height:1.7}

/* ============ 团体包场 CTA 面板 ============ */
.group-panel{position:relative;overflow:hidden;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;padding:40px;border-radius:var(--r-lg);border:1px solid rgba(15,211,192,.28);background:linear-gradient(135deg,rgba(15,211,192,.10),rgba(11,21,36,.9) 55%)}
.group-panel::after{content:"";position:absolute;left:-60px;bottom:-70px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(15,211,192,.22),transparent 68%);pointer-events:none}
.group-panel h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:12px}
.group-panel p{color:var(--text-dim);margin-bottom:22px;max-width:560px}
.group-stat{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.group-stat div{padding:18px;border-radius:var(--r-md);background:rgba(7,14,23,.5);border:1px solid var(--line-2)}
.group-stat b{display:block;font-size:26px;font-weight:800;color:var(--brand-300);font-variant-numeric:tabular-nums}
.group-stat span{font-size:13px;color:var(--muted)}

/* ============ FAQ ============ */
.faq-list{max-width:880px}
.faq-item{background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;transition:border-color .24s var(--ease)}
.faq-item.is-open{border-color:rgba(15,211,192,.35)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;text-align:left;font-size:17px;font-weight:700;color:var(--text);border-left:3px solid transparent;transition:border-color .24s var(--ease),color .24s var(--ease)}
.faq-item.is-open .faq-q{border-left-color:var(--brand);color:var(--brand-300)}
.faq-q svg{flex:0 0 18px;transition:transform .28s var(--ease);color:var(--brand)}
.faq-item.is-open .faq-q svg{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{padding:0 22px 22px;margin:0;font-size:15px;line-height:1.8;color:var(--text-dim)}

/* ============ 咨询表单 ============ */
.form-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;align-items:start}
.form-aside h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:14px}
.form-aside p{color:var(--text-dim);font-size:15px}
.contact-list{margin-top:22px;display:grid;gap:12px}
.contact-list li{display:flex;gap:10px;font-size:14px;color:var(--text-dim)}
.contact-list li b{color:var(--text);font-weight:700}
.contact-list li i{width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:9px;flex:0 0 6px}
.consult-form{background:var(--bg-800);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;font-weight:600;color:var(--text-dim)}
.field input,.field select,.field textarea{width:100%;background:var(--bg-700);border:1px solid var(--line-2);border-radius:12px;color:var(--text);padding:0 14px;height:48px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.field textarea{height:auto;padding:12px 14px;line-height:1.7;resize:vertical;min-height:112px}
.field input::placeholder,.field textarea::placeholder{color:var(--muted)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,211,192,.22);outline:none}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--warn);box-shadow:0 0 0 3px rgba(244,63,94,.16)}
.field .err{display:none;font-size:13px;color:var(--warn)}
.field.has-error .err{display:block}
.check-row{display:flex;align-items:flex-start;gap:10px;margin-top:18px;font-size:13px;color:var(--text-dim)}
.check-row input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand)}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-top:22px}
.form-foot small{font-size:13px;color:var(--muted);flex:1 1 260px}
.form-alert{display:none;margin-bottom:18px;padding:12px 16px;border-radius:12px;font-size:14px;border:1px solid rgba(34,197,94,.4);background:rgba(34,197,94,.1);color:#9DF3C0}
.form-alert.is-visible{display:block}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-900);border-top:1px solid transparent;background-image:linear-gradient(90deg,rgba(15,211,192,0),rgba(15,211,192,.5),rgba(255,106,43,.35),rgba(15,211,192,0));background-repeat:no-repeat;background-size:100% 1px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px}
.footer-brand p{font-size:14px;color:var(--text-dim);margin-top:16px;max-width:340px;line-height:1.8}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:grid;gap:11px}
.footer-col li{font-size:14px;color:var(--muted)}
.footer-col a{color:var(--text-dim);text-decoration:underline;text-decoration-color:transparent;text-underline-offset:3px;transition:color .24s var(--ease),text-decoration-color .24s var(--ease)}
.footer-col a:hover{color:var(--brand);text-decoration-color:currentColor}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding:20px 0 28px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.site-footer .logo{font-size:20px}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sec:88px}
}
@media (max-width:1023px){
  :root{--sec:64px}
  .container{padding:0 24px}
  .venue-row,.venue-row.is-rev{grid-template-columns:1fr;gap:22px}
  .venue-row.is-rev .venue-media,.venue-row.is-rev .venue-body{order:0}
  .slot-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps::after{display:none}
  .facility-list{grid-template-columns:repeat(2,1fr)}
  .group-panel{grid-template-columns:1fr;gap:26px;padding:30px}
  .form-wrap{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .header-nav-wrap::before,.header-nav-wrap::after{content:"";position:absolute;top:0;bottom:16px;width:30px;pointer-events:none;z-index:2}
  .header-nav-wrap::before{left:-8px;background:linear-gradient(90deg,rgba(7,14,23,.95),rgba(7,14,23,0))}
  .header-nav-wrap::after{right:-8px;background:linear-gradient(270deg,rgba(7,14,23,.95),rgba(7,14,23,0))}
}
@media (max-width:767px){
  :root{--sec:56px}
  .container{padding:0 20px}
  .header-top{padding:12px 0}
  .logo{font-size:19px}
  .logo-mark{width:22px;height:22px;flex:0 0 22px}
  .btn{height:44px;padding:0 18px;font-size:14px}
  .icon-btn{width:40px;height:40px}
  .page-hero{padding:28px 0 30px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:28px}
  .slot-grid,.steps,.facility-list{grid-template-columns:1fr}
  .spec-row{grid-template-columns:1fr;gap:10px}
  .form-grid{grid-template-columns:1fr}
  .consult-form{padding:22px}
  .group-stat{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .venue-row{padding:20px}
  .group-panel{padding:24px}
  .breadcrumb{font-size:13px}
}
@media (max-width:519px){
  .hero-points li{font-size:12px;padding:6px 12px}
  .page-hero h1{font-size:26px}
}
@media (hover:none){
  .venue-row:hover,.slot-card:hover{transform:none}
  .venue-row:hover .venue-media img{transform:none}
  .btn-primary:hover{transform:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --bg-900:#070E17;
  --bg-800:#0B1524;
  --bg-700:#101F33;
  --bg-600:#16293F;
  --brand:#0FD3C0;
  --brand-700:#0A9E90;
  --brand-300:#6FF0E4;
  --accent:#FF6A2B;
  --amber:#FFC24B;
  --text:#E8F1F8;
  --text-dim:#9FB3C6;
  --muted:#6C8095;
  --success:#22C55E;
  --danger:#F43F5E;
  --grad-brand:linear-gradient(120deg,#0FD3C0 0%,#2F9BFF 100%);
  --grad-fade:linear-gradient(180deg,rgba(7,14,23,0) 0%,rgba(7,14,23,.92) 100%);
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.06);
  --glass-bg:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  --glass-border:1px solid rgba(255,255,255,.10);
  --shadow-1:0 1px 2px rgba(0,0,0,.45),0 12px 32px -14px rgba(0,0,0,.7);
  --glow:0 0 0 1px rgba(15,211,192,.35),0 10px 30px -8px rgba(15,211,192,.5);
  --radius-lg:20px;
  --radius:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --space-section:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;background:transparent;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;
}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:800;}
p{margin:0 0 16px;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:15px;}
::selection{background:rgba(15,211,192,.35);color:#fff;}

/* Foundation overrides */
.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;margin:0 auto;}
.grid-container.full{max-width:100%;padding:0;}
a:hover{color:var(--brand-300);}
button,.button{border-radius:var(--radius-btn);}
.accordion,.accordion-item,.accordion-title,.accordion-content{background:transparent;color:var(--text);border:none;}
.accordion-title{border:none;padding:0;}
.accordion-title::before{display:none;}
.reveal{background:transparent;border:none;}

/* ============ header ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:rgba(7,14,23,.55);
  backdrop-filter:blur(10px) saturate(130%);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),padding .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,14,23,.86);
  backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.site-header .grid-container{padding-top:18px;padding-bottom:12px;transition:padding .24s var(--ease);}
.site-header.is-scrolled .grid-container{padding-top:10px;padding-bottom:8px;}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:20px;}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:31px;font-weight:800;letter-spacing:.01em;color:var(--text);
  line-height:1.1;
}
.logo:hover{color:var(--text);}
.logo-mark{
  width:14px;height:30px;flex:0 0 auto;border-radius:3px;
  background:var(--grad-brand);
  clip-path:polygon(0 0,100% 0,100% 78%,50% 100%,0 78%);
  box-shadow:0 0 18px rgba(15,211,192,.55);
}
.header-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);color:var(--text-dim);
  transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);background:rgba(15,211,192,.08);}
.header-search{
  max-height:0;overflow:hidden;opacity:0;
  transition:max-height .3s var(--ease),opacity .3s var(--ease),margin .3s var(--ease);
}
.header-search.is-open{max-height:80px;opacity:1;margin-top:14px;}
.header-search input{
  width:100%;height:48px;border-radius:var(--radius-btn);
  background:var(--bg-700);border:1px solid var(--line);color:var(--text);
  padding:0 16px;
}
.header-search input::placeholder{color:var(--muted);}
.header-nav-wrap{margin-top:16px;position:relative;}
.chip-nav{display:flex;gap:10px;flex-wrap:wrap;}
.chip{
  display:inline-flex;align-items:center;
  padding:10px 18px;border-radius:999px;font-size:15px;font-weight:600;
  color:var(--text-dim);background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.07);
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  position:relative;white-space:nowrap;
}
.chip:hover{color:var(--text);border-color:rgba(15,211,192,.45);background:rgba(15,211,192,.08);}
.chip.is-active{
  color:var(--text);
  background:var(--glass-bg);
  border:1px solid rgba(15,211,192,.55);
  box-shadow:0 0 0 1px rgba(15,211,192,.18),0 8px 24px -12px rgba(15,211,192,.6);
}
.chip.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:-2px;height:2px;
  background:var(--brand);border-radius:2px;
}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
.btn-primary{background:var(--grad-brand);color:#04121A;box-shadow:0 10px 26px -12px rgba(15,211,192,.8);}
.btn-primary:hover{color:#04121A;transform:translateY(-1px);box-shadow:var(--glow);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--text);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
  background-image:linear-gradient(var(--brand),var(--brand));
  background-size:0% 1px;background-repeat:no-repeat;background-position:0 100%;
  transition:background-size .28s var(--ease);
}
.link-arrow:hover{color:var(--brand-300);background-size:100% 1px;}

/* ============ page hero ============ */
.page-hero{
  position:relative;
  margin-top:172px;
  padding:56px 0 60px;
  background:var(--bg-800);
  overflow:hidden;
  border-bottom:1px solid var(--line-soft);
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center right;
  opacity:.22;
}
.page-hero::after{
  content:"";
  position:absolute;top:-40px;right:-120px;width:520px;height:280px;
  background:linear-gradient(120deg,rgba(15,211,192,.24),rgba(47,155,255,0));
  transform:skewX(-18deg);filter:blur(2px);
}
.page-hero .grid-container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:var(--muted);margin-bottom:20px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:rgba(255,255,255,.22);}
.breadcrumb .current{color:var(--text-dim);}
.page-hero h1{
  font-size:44px;line-height:1.18;font-weight:800;letter-spacing:.01em;
  margin-bottom:16px;
}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.page-hero-sub{font-size:17px;color:var(--text-dim);max-width:720px;margin-bottom:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--text-dim);border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.03);
}
.tag i{color:var(--brand);font-size:12px;}

/* ============ section ============ */
.section{padding:var(--space-section) 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  padding-bottom:20px;border-bottom:1px solid var(--line-soft);margin-bottom:48px;
}
.section-head h2{font-size:30px;font-weight:800;letter-spacing:.01em;}
.section-head .sub{font-size:14px;color:var(--text-dim);}
.section-head .head-right{font-size:14px;color:var(--text-dim);white-space:nowrap;}

/* ============ schedule strip ============ */
.schedule-strip{
  margin-top:-34px;position:relative;z-index:6;
  background:var(--bg-700);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-1);
  padding:22px 26px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:8px;
}
.schedule-item{padding:0 18px;border-left:1px solid var(--line-soft);}
.schedule-item:first-child{border-left:none;padding-left:0;}
.schedule-item .label{font-size:12px;letter-spacing:.08em;font-weight:600;color:var(--muted);text-transform:uppercase;}
.schedule-item .value{
  font-size:20px;font-weight:800;color:var(--text);
  font-variant-numeric:tabular-nums;margin-top:4px;
}
.schedule-item .value span{font-size:13px;font-weight:600;color:var(--text-dim);margin-left:4px;}

/* ============ course ladder ============ */
.course-grid{align-items:start;}
.course-card{
  background:var(--bg-800);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-lg);
  padding:28px 26px 26px;
  box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;height:100%;
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
  position:relative;
}
.course-card:hover{transform:translateY(-2px);border-color:rgba(15,211,192,.35);}
.course-card.is-lift{margin-top:-22px;}
.course-card.is-sink{margin-top:22px;}
.course-level{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);border:1px solid rgba(15,211,192,.35);
  border-radius:999px;padding:5px 12px;width:max-content;margin-bottom:18px;
}
.course-card h3{font-size:20px;font-weight:700;margin-bottom:10px;}
.course-card .desc{font-size:14px;color:var(--text-dim);margin-bottom:20px;flex:0 0 auto;}
.course-meta{display:flex;flex-direction:column;gap:0;margin-bottom:22px;}
.course-meta li{
  display:flex;justify-content:space-between;gap:12px;
  font-size:14px;color:var(--text-dim);
  padding:11px 0;border-bottom:1px solid var(--line-soft);
}
.course-meta li:first-child{border-top:1px solid var(--line-soft);}
.course-meta li b{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums;}
.price-row{
  display:flex;align-items:baseline;gap:8px;margin:auto 0 18px;
  padding-top:6px;
}
.price-row .price{
  font-size:32px;font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1;
}
.price-row .unit{font-size:13px;color:var(--muted);}
.course-card.is-feature .course-level{color:var(--amber);border-color:rgba(255,194,75,.45);}
.course-card.is-feature{border-color:rgba(255,194,75,.28);}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.step{
  padding:26px 22px;position:relative;
  border-left:1px solid var(--line-soft);
}
.step:first-child{border-left:none;}
.step .num{
  font-size:34px;font-weight:800;color:rgba(15,211,192,.32);
  font-variant-numeric:tabular-nums;line-height:1;margin-bottom:14px;
}
.step h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.step p{font-size:14px;color:var(--text-dim);margin:0;}

/* ============ feature split ============ */
.split{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.split.reverse{grid-template-columns:5fr 7fr;}
.split-media{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line-soft);background:var(--bg-700);
  aspect-ratio:4/3;
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease),filter .32s var(--ease);}
.split-media:hover img{transform:scale(1.03);filter:brightness(1);}
.split-media::after{
  content:"";position:absolute;inset:auto 0 0 0;height:45%;
  background:var(--grad-fade);pointer-events:none;
}
.split-media .media-chip{
  position:absolute;left:16px;top:16px;z-index:2;
  padding:6px 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--text);background:rgba(7,14,23,.6);border:var(--glass-border);
  backdrop-filter:blur(14px) saturate(140%);
}
.split-body h2{font-size:28px;font-weight:800;margin-bottom:16px;}
.split-body p{color:var(--text-dim);font-size:15px;margin-bottom:18px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-dim);padding:9px 0;
}
.check-list li i{color:var(--brand);font-size:13px;margin-top:8px;}

/* ============ stats bar ============ */
.stats-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
  padding:34px 0;
}
.stat{padding:0 24px;border-left:1px solid var(--line-soft);}
.stat:first-child{border-left:none;padding-left:0;}
.stat .num{
  font-size:32px;font-weight:800;color:var(--text);
  font-variant-numeric:tabular-nums;line-height:1;
}
.stat .num i{font-size:18px;font-style:normal;color:var(--brand);margin-left:2px;}
.stat .lbl{font-size:12px;letter-spacing:.06em;color:var(--muted);margin-top:10px;font-weight:600;}

/* ============ form ============ */
.consult-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.consult-info h2{font-size:28px;margin-bottom:16px;}
.consult-info p{color:var(--text-dim);font-size:15px;}
.contact-lines{margin-top:26px;border-top:1px solid var(--line-soft);}
.contact-lines li{
  display:flex;justify-content:space-between;gap:16px;
  padding:14px 0;border-bottom:1px solid var(--line-soft);
  font-size:14px;color:var(--text-dim);
}
.contact-lines li b{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums;}
.form-card{
  background:var(--bg-800);border:1px solid var(--line-soft);
  border-radius:var(--radius-lg);padding:30px 28px;box-shadow:var(--shadow-1);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text-dim);margin-bottom:8px;letter-spacing:.02em;}
.field input,.field select,.field textarea{
  width:100%;height:48px;border-radius:var(--radius-img);
  background:var(--bg-700);border:1px solid var(--line);color:var(--text);
  padding:0 14px;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--muted);}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-dim) 50%),linear-gradient(135deg,var(--text-dim) 50%,transparent 50%);background-position:calc(100% - 20px) 22px,calc(100% - 14px) 22px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,211,192,.25);outline:none;
}
.field.is-error input,.field.is-error select,.field.is-error textarea{border-color:var(--danger);}
.field .err{display:none;font-size:13px;color:var(--danger);margin-top:6px;}
.field.is-error .err{display:block;}
.checkbox-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-dim);margin-bottom:20px;}
.checkbox-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand);}
.form-note{font-size:13px;color:var(--muted);margin-top:14px;margin-bottom:0;}
.form-success{
  display:none;margin-bottom:20px;padding:12px 16px;border-radius:var(--radius-img);
  border:1px solid rgba(34,197,94,.4);background:rgba(34,197,94,.1);
  color:#9BE8B4;font-size:14px;
}
.form-success.is-visible{display:block;}

/* ============ FAQ ============ */
.faq-block{margin-top:56px;}
.faq-item{
  background:var(--bg-800);border:1px solid var(--line-soft);
  border-radius:var(--radius);margin-bottom:12px;overflow:hidden;
  transition:border-color .24s var(--ease);
}
.faq-item.is-open{border-color:rgba(15,211,192,.32);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;border:none;color:var(--text);
  font-size:17px;font-weight:700;text-align:left;
}
.faq-item.is-open .faq-q{box-shadow:inset 3px 0 0 var(--brand);}
.faq-q i{color:var(--brand);font-size:14px;transition:transform .28s var(--ease);flex:0 0 auto;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s var(--ease),padding .3s var(--ease);
  padding:0 24px;
}
.faq-item.is-open .faq-a{max-height:320px;padding:0 24px 22px;}
.faq-a p{font-size:15px;color:var(--text-dim);margin:0;line-height:1.8;}

/* ============ bottom CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--bg-800);
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
  padding:64px 0;
}
.cta-band::before{
  content:"";position:absolute;left:-100px;bottom:-160px;width:520px;height:340px;
  background:linear-gradient(120deg,rgba(15,211,192,.22),rgba(47,155,255,0));
  transform:skewX(-16deg);filter:blur(4px);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:28px;margin-bottom:10px;}
.cta-inner p{color:var(--text-dim);font-size:15px;margin:0;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ footer ============ */
.site-footer{
  background:var(--bg-900);
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,rgba(15,211,192,0),rgba(15,211,192,.55),rgba(47,155,255,0)) 1;
  padding:72px 0 32px;
  margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .logo{font-size:24px;margin-bottom:16px;}
.footer-brand .logo-mark{height:24px;width:11px;}
.footer-brand p{font-size:14px;color:var(--text-dim);max-width:320px;line-height:1.85;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--text);letter-spacing:.02em;}
.footer-col ul li{font-size:14px;color:var(--text-dim);padding:6px 0;line-height:1.7;}
.footer-col ul li a{color:var(--text-dim);text-decoration:underline;text-decoration-color:transparent;text-underline-offset:3px;transition:color .22s var(--ease),text-decoration-color .22s var(--ease);}
.footer-col ul li a:hover{color:var(--brand);text-decoration-color:var(--brand);}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* ============ animations ============ */
.reveal-up{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal-up.is-in{opacity:1;transform:translateY(0);}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal-up{opacity:1;transform:none;}
}

/* ============ responsive ============ */
@media (max-width:1279px){
  :root{--space-section:88px;}
  .page-hero h1{font-size:40px;}
}
@media (max-width:1023px){
  :root{--space-section:72px;}
  .logo{font-size:26px;}
  .page-hero{margin-top:158px;padding:44px 0 48px;}
  .page-hero h1{font-size:34px;}
  .header-nav-wrap{
    position:relative;
    overflow-x:auto;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
    margin-left:-32px;margin-right:-32px;padding:0 32px;
  }
  .header-nav-wrap::-webkit-scrollbar{display:none;}
  .chip-nav{flex-wrap:nowrap;}
  .split,.split.reverse{grid-template-columns:1fr;gap:32px;}
  .consult-grid{grid-template-columns:1fr;gap:36px;}
  .steps{grid-template-columns:1fr 1fr;}
  .step:nth-child(3){border-left:none;}
  .step{border-top:1px solid var(--line-soft);}
  .step:nth-child(-n+2){border-top:none;}
  .schedule-strip{grid-template-columns:1fr 1fr;row-gap:20px;padding:22px;}
  .schedule-item:nth-child(3){border-left:none;padding-left:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  :root{--space-section:56px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .site-header .grid-container{padding-top:14px;padding-bottom:10px;}
  .logo{font-size:22px;}
  .logo-mark{width:10px;height:22px;}
  .header-actions .btn-primary{height:42px;padding:0 16px;font-size:14px;}
  .page-hero{margin-top:146px;padding:36px 0 40px;}
  .page-hero h1{font-size:29px;}
  .page-hero-sub{font-size:15px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:32px;}
  .section-head h2{font-size:24px;}
  .schedule-strip{grid-template-columns:1fr;padding:20px;}
  .schedule-item{border-left:none;padding:0 0 14px;border-bottom:1px solid var(--line-soft);}
  .schedule-item:last-child{border-bottom:none;padding-bottom:0;}
  .course-card.is-lift,.course-card.is-sink{margin-top:0;}
  .course-grid .cell{margin-bottom:20px;}
  .steps{grid-template-columns:1fr;}
  .step{border-left:none;padding:20px 0;border-top:1px solid var(--line-soft);}
  .step:nth-child(2){border-top:1px solid var(--line-soft);}
  .stats-bar{grid-template-columns:1fr 1fr;row-gap:24px;}
  .stat:nth-child(3){border-left:none;padding-left:0;}
  .stat{padding:0 16px;}
  .split-body h2,.consult-info h2,.cta-inner h2{font-size:23px;}
  .form-card{padding:24px 20px;}
  .form-row{grid-template-columns:1fr;gap:0;}
  .faq-q{font-size:15.5px;padding:18px 18px;}
  .faq-item.is-open .faq-a{padding:0 18px 18px;}
  .cta-band{padding:48px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category4 */
:root{
  --bg-900:#070E17;
  --bg-800:#0B1524;
  --bg-700:#101F33;
  --bg-600:#16293F;
  --brand:#0FD3C0;
  --brand-700:#0A9E90;
  --brand-300:#6FF0E4;
  --accent:#FF6A2B;
  --amber:#FFC24B;
  --text:#E8F1F8;
  --text-dim:#9FB3C6;
  --muted:#6C8095;
  --ok:#22C55E;
  --warn:#F43F5E;
  --line:rgba(255,255,255,.06);
  --line-strong:rgba(255,255,255,.10);
  --line-btn:rgba(255,255,255,.18);
  --glass-bg:linear-gradient(180deg,rgba(255,255,255,.06) 0%,rgba(255,255,255,.02) 100%);
  --grad-brand:linear-gradient(120deg,#0FD3C0 0%,#2F9BFF 100%);
  --fade-bottom:linear-gradient(180deg,rgba(7,14,23,0) 0%,rgba(7,14,23,.92) 100%);
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(0,0,0,.45),0 12px 32px -14px rgba(0,0,0,.7);
  --shadow-2:0 2px 6px rgba(0,0,0,.5),0 24px 48px -20px rgba(0,0,0,.8);
  --glow:0 0 0 1px rgba(15,211,192,.35),0 10px 30px -8px rgba(15,211,192,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec:96px;
  --font:system-ui,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::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-900);
  background-image:radial-gradient(1200px 600px at 80% -10%,rgba(15,211,192,.06),transparent 60%),radial-gradient(900px 500px at 0% 20%,rgba(47,155,255,.05),transparent 60%);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{color:var(--text);font-family:var(--font);margin:0;line-height:1.28;letter-spacing:-.01em}
p{margin:0}
a{color:var(--brand);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--brand-300)}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::selection{background:rgba(15,211,192,.28);color:#fff}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--sec) 0}
.section--tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:48px}
.section-head h2{font-size:30px;font-weight:800;letter-spacing:-.02em}
.section-head .sub{font-size:14px;color:var(--muted);max-width:520px;text-align:right;line-height:1.7}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);display:block}

/* ---------- header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:120;background:rgba(7,14,23,.45);backdrop-filter:blur(0px);border-bottom:1px solid transparent;transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease)}
.site-header.is-scrolled{background:rgba(7,14,23,.86);backdrop-filter:blur(12px) saturate(140%);border-bottom-color:var(--line)}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:18px 0 14px;transition:padding .24s var(--ease)}
.site-header.is-scrolled .header-top{padding:9px 0 7px}
.logo{display:inline-flex;align-items:center;gap:11px;font-size:20px;font-weight:800;color:var(--text);letter-spacing:-.02em;transition:color .24s var(--ease)}
.logo:hover{color:var(--brand-300)}
.logo-mark{width:26px;height:26px;border-radius:8px;background:var(--grad-brand);box-shadow:var(--glow);flex:none;clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px)}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius-btn);border:1px solid var(--line-btn);color:var(--text-dim);transition:border-color .24s var(--ease),color .24s var(--ease),background .24s var(--ease)}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);background:rgba(15,211,192,.06)}
.header-search{display:none;padding:0 0 14px}
.header-search.is-open{display:block}
.header-search input{width:100%;height:48px;border-radius:var(--radius-sm);background:var(--bg-700);border:1px solid var(--line-strong);padding:0 16px;transition:border-color .24s var(--ease),box-shadow .24s var(--ease)}
.header-search input::placeholder{color:var(--muted)}
.header-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,211,192,.18)}
.header-nav-wrap{padding:0 0 14px}
.chip-nav{display:flex;align-items:center;gap:8px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.chip-nav::-webkit-scrollbar{display:none}
.chip{position:relative;display:inline-flex;align-items:center;flex:none;padding:10px 18px;border-radius:999px;font-size:14px;font-weight:600;color:var(--text-dim);background:rgba(255,255,255,.05);border:1px solid var(--line);transition:color .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.chip:hover{color:var(--text);border-color:rgba(15,211,192,.35)}
.chip.is-active{color:var(--text);background:var(--glass-bg);border-color:rgba(15,211,192,.55);box-shadow:0 0 0 1px rgba(15,211,192,.18),0 6px 18px -10px rgba(15,211,192,.6);backdrop-filter:blur(12px) saturate(140%)}
.chip.is-active::after{content:"";position:absolute;left:16px;right:16px;bottom:-1px;height:2px;border-radius:2px;background:var(--brand)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:700;letter-spacing:.01em;border:1px solid transparent;transition:transform .2s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease),background .24s var(--ease);white-space:nowrap}
.btn-primary{color:#04211F;background:var(--grad-brand);box-shadow:var(--glow)}
.btn-primary:hover{color:#04211F;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(15,211,192,.5),0 16px 36px -10px rgba(15,211,192,.7)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{color:var(--text);background:transparent;border-color:var(--line-btn)}
.btn-ghost:hover{color:var(--brand);border-color:var(--brand);background:rgba(15,211,192,.05)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);text-underline-offset:4px;text-decoration:underline;text-decoration-color:transparent;transition:text-decoration-color .24s var(--ease)}
.link-more:hover{text-decoration-color:var(--brand)}

/* ---------- page head ---------- */
.page-head{position:relative;margin-top:150px;background:var(--bg-800);border-bottom:1px solid var(--line);overflow:hidden}
.page-head::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(15,211,192,.10) 0%,rgba(15,211,192,0) 42%),linear-gradient(115deg,rgba(255,106,43,.10) 0%,rgba(255,106,43,0) 30%);pointer-events:none}
.page-head::after{content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(15,211,192,.18) 0%,rgba(15,211,192,0) 68%);pointer-events:none}
.page-head .container{position:relative;z-index:2;padding-top:44px;padding-bottom:44px}
.band{position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--grad-brand);clip-path:polygon(0 0,100% 0,100% 70%,0 100%);z-index:3}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:16px;flex-wrap:wrap}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:rgba(255,255,255,.18)}
.crumb .cur{color:var(--text-dim)}
.page-head h1{font-size:42px;font-weight:800;letter-spacing:-.025em;margin-bottom:14px}
.page-head .lede{font-size:16px;color:var(--text-dim);max-width:760px;line-height:1.85}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.04em;border:1px solid var(--line-strong);color:var(--text-dim);background:rgba(255,255,255,.03)}
.tag--brand{color:var(--brand-300);border-color:rgba(15,211,192,.4)}
.tag--amber{color:var(--amber);border-color:rgba(255,194,75,.4)}
.tag--accent{color:var(--accent);border-color:rgba(255,106,43,.4)}

/* ---------- metrics ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--bg-800);overflow:hidden}
.metric{padding:26px 24px;border-left:1px solid var(--line)}
.metric:first-child{border-left:0}
.metric .val{font-size:32px;font-weight:800;line-height:1.1;color:var(--text);font-variant-numeric:tabular-nums}
.metric .val i{font-style:normal;font-size:16px;font-weight:700;color:var(--brand);margin-left:2px}
.metric .lab{font-size:12px;letter-spacing:.06em;color:var(--muted);margin-top:8px;font-weight:600}

/* ---------- tier preview cards ---------- */
.tier-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tier-card{position:relative;display:flex;flex-direction:column;border-radius:var(--radius);background:var(--bg-800);border:1px solid var(--line);padding:28px;transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease)}
.tier-card:hover{transform:translateY(-2px);border-color:rgba(15,211,192,.3);box-shadow:var(--shadow-1)}
.tier-card.is-featured{background:var(--glass-bg);backdrop-filter:blur(14px) saturate(140%);border-color:rgba(15,211,192,.42);box-shadow:var(--shadow-2);transform:translateY(-8px)}
.tier-card.is-featured:hover{transform:translateY(-10px)}
.tier-badge{position:absolute;top:-12px;right:22px;padding:4px 13px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--amber);border:1px solid rgba(255,194,75,.55);background:rgba(7,14,23,.85)}
.tier-card h3{font-size:20px;font-weight:700;margin-bottom:6px}
.tier-card .tier-desc{font-size:13.5px;color:var(--muted);line-height:1.7;margin-bottom:18px;min-height:44px}
.tier-price{display:flex;align-items:baseline;gap:6px;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:20px}
.tier-price .amount{font-size:34px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.tier-price .unit{font-size:13px;color:var(--muted)}
.tier-list{margin-bottom:26px;flex:1}
.tier-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--text-dim);padding:7px 0;line-height:1.7}
.tier-list li svg{flex:none;margin-top:6px;color:var(--brand)}
.tier-list li.is-off svg{color:var(--muted)}

/* ---------- tier matrix ---------- */
.matrix-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--bg-800);scrollbar-width:thin}
.matrix-wrap::-webkit-scrollbar{height:8px}
.matrix-wrap::-webkit-scrollbar-track{background:var(--bg-900)}
.matrix-wrap::-webkit-scrollbar-thumb{background:var(--bg-600);border-radius:8px}
.matrix{display:grid;grid-template-columns:minmax(190px,1.5fr) repeat(3,minmax(160px,1fr));min-width:700px}
.mx-cell{padding:20px 22px;border-top:1px solid var(--line);font-size:14.5px;color:var(--text-dim);line-height:1.7;display:flex;align-items:center}
.mx-head .mx-cell{border-top:0;padding-top:26px;padding-bottom:22px;background:var(--bg-700);flex-direction:column;align-items:flex-start;gap:4px}
.mx-head .mx-cell .tname{font-size:16px;font-weight:700;color:var(--text);letter-spacing:-.01em}
.mx-head .mx-cell .tnote{font-size:12px;color:var(--muted);letter-spacing:.04em}
.mx-cell.sticky{position:sticky;left:0;z-index:3;background:var(--bg-800);border-right:1px solid var(--line);font-weight:600;color:var(--text)}
.mx-head .mx-cell.sticky{background:var(--bg-700)}
.mx-row:hover .mx-cell{background:rgba(15,211,192,.035)}
.mx-row:hover .mx-cell.sticky{background:#0E1C2E}
.mx-col-hl{background:rgba(15,211,192,.05)}
.mx-head .mx-col-hl{background:linear-gradient(180deg,rgba(15,211,192,.14),rgba(15,211,192,.03))}
.mark{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600}
.mark svg{flex:none}
.mark-yes{color:var(--text)}
.mark-yes svg{color:var(--brand)}
.mark-no{color:var(--muted)}
.mark-no svg{color:rgba(255,255,255,.22)}
.mx-note{font-size:12.5px;color:var(--muted);margin-top:14px;line-height:1.75}

/* ---------- split feature ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center}
.split--rev{grid-template-columns:7fr 5fr}
.split-media{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--bg-700);aspect-ratio:4/3}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease),filter .32s var(--ease);filter:brightness(.95)}
.split-media:hover img{transform:scale(1.03);filter:brightness(1)}
.split-media::after{content:"";position:absolute;inset:auto 0 0 0;height:45%;background:var(--fade-bottom);pointer-events:none}
.split-body h2{font-size:28px;font-weight:800;margin-bottom:16px;letter-spacing:-.02em}
.split-body p{color:var(--text-dim);margin-bottom:18px}
.param-row{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:26px 0}
.param{padding:18px 18px 18px 0;border-left:1px solid var(--line);padding-left:18px}
.param:first-child{border-left:0;padding-left:0}
.param .k{font-size:12px;letter-spacing:.06em;color:var(--muted);font-weight:600;margin-bottom:6px}
.param .v{font-size:16px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums}
.param .v small{display:block;font-size:12.5px;color:var(--muted);font-weight:500;margin-top:4px;letter-spacing:0}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.steps::before{content:"";position:absolute;left:0;right:0;top:22px;height:1px;background:linear-gradient(90deg,rgba(15,211,192,.5),rgba(47,155,255,.28),rgba(15,211,192,0))}
.step{position:relative;padding:0 22px 0 0}
.step .dot{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;color:var(--brand);background:var(--bg-800);border:1px solid rgba(15,211,192,.4);position:relative;z-index:2;font-variant-numeric:tabular-nums;clip-path:polygon(9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%,0 9px)}
.step h3{font-size:17px;font-weight:700;margin:20px 0 8px}
.step p{font-size:14px;color:var(--text-dim);line-height:1.8}

/* ---------- upgrade panel (glass) ---------- */
.upgrade{position:relative;border-radius:24px;padding:36px;background:var(--glass-bg);backdrop-filter:blur(14px) saturate(140%);border:1px solid var(--line-strong);display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;overflow:hidden}
.upgrade::after{content:"";position:absolute;right:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(15,211,192,.16) 0%,rgba(15,211,192,0) 70%);pointer-events:none}
.upgrade h3{font-size:24px;font-weight:800;margin-bottom:10px;letter-spacing:-.02em}
.upgrade p{color:var(--text-dim);font-size:15px;max-width:660px}
.upgrade-actions{display:flex;gap:12px;position:relative;z-index:2;flex-wrap:wrap}
.compare-bar{margin-top:26px;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cb-item{border:1px solid var(--line);border-radius:var(--radius-sm);padding:16px 18px;background:rgba(7,14,23,.5)}
.cb-item .k{font-size:12px;letter-spacing:.06em;color:var(--muted);font-weight:600}
.cb-item .v{font-size:15px;font-weight:700;margin-top:6px;color:var(--text)}
.cb-item .v em{font-style:normal;color:var(--accent);font-variant-numeric:tabular-nums}

/* ---------- form + faq ---------- */
.consult{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.consult-info h2{font-size:28px;font-weight:800;margin-bottom:16px;letter-spacing:-.02em}
.consult-info p{color:var(--text-dim);margin-bottom:24px}
.contact-list li{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--text-dim)}
.contact-list li strong{color:var(--text);font-weight:600;min-width:74px;display:inline-block}
.form-panel{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--bg-800);padding:30px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:600;color:var(--text-dim);letter-spacing:.02em}
.field input,.field select,.field textarea{width:100%;background:var(--bg-700);border:1px solid var(--line-strong);border-radius:var(--radius-sm);color:var(--text);transition:border-color .24s var(--ease),box-shadow .24s var(--ease)}
.field input,.field select{height:48px;padding:0 14px}
.field textarea{padding:12px 14px;resize:vertical;min-height:112px;line-height:1.75}
.field input::placeholder,.field textarea::placeholder{color:var(--muted)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,211,192,.18)}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--warn);box-shadow:0 0 0 3px rgba(244,63,94,.14)}
.err-msg{font-size:13px;color:var(--warn);display:none}
.field.has-error .err-msg{display:block}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--text-dim);line-height:1.7}
.check-row input{width:18px;height:18px;height:18px;accent-color:var(--brand);margin-top:4px;flex:none}
.form-foot{font-size:13px;color:var(--muted);margin-top:14px;line-height:1.7}
.form-alert{display:none;margin-bottom:20px;padding:12px 16px;border-radius:var(--radius-sm);font-size:14px;border:1px solid rgba(34,197,94,.4);background:rgba(34,197,94,.1);color:#9DF3BE}
.form-alert.is-on{display:block}

.faq{margin-top:48px}
.faq-item{background:var(--bg-800);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;transition:border-color .24s var(--ease)}
.faq-item[open]{border-color:rgba(15,211,192,.35)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:18px;padding:20px 24px;font-size:17px;font-weight:700;color:var(--text);position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);opacity:0;transition:opacity .24s var(--ease)}
.faq-item[open] summary::before{opacity:1}
.faq-item summary .arw{flex:none;width:22px;height:22px;color:var(--muted);transition:transform .28s var(--ease),color .24s var(--ease)}
.faq-item[open] summary .arw{transform:rotate(180deg);color:var(--brand)}
.faq-item .ans{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-dim)}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-900);border-top:1px solid var(--line);position:relative;margin-top:24px}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(15,211,192,0),rgba(15,211,192,.6),rgba(255,106,43,.35),rgba(15,211,192,0))}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1.2fr;gap:40px;padding:64px 0 40px}
.footer-brand .logo{font-size:18px;margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-dim);line-height:1.85;max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--text);margin-bottom:18px}
.footer-col ul li{font-size:14px;color:var(--text-dim);padding:6px 0;line-height:1.7}
.footer-col ul li a{color:var(--text-dim);text-underline-offset:3px;text-decoration:underline;text-decoration-color:transparent;transition:color .24s var(--ease),text-decoration-color .24s var(--ease)}
.footer-col ul li a:hover{color:var(--brand);text-decoration-color:var(--brand)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:24px 0 40px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (max-width:1279px){
  .page-head h1{font-size:38px}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .container{padding:0 24px}
  .page-head{margin-top:138px}
  .page-head h1{font-size:32px}
  .split,.split--rev,.consult{grid-template-columns:1fr;gap:32px}
  .split--rev .split-media{order:2}
  .tier-cards{grid-template-columns:1fr;gap:28px}
  .tier-card.is-featured{transform:none}
  .tier-card.is-featured:hover{transform:translateY(-2px)}
  .steps{grid-template-columns:1fr 1fr;gap:32px 0}
  .steps::before{display:none}
  .upgrade{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .metrics{grid-template-columns:1fr 1fr}
  .metric{border-left:0;border-top:1px solid var(--line)}
  .metric:nth-child(1),.metric:nth-child(2){border-top:0}
  .metric:nth-child(even){border-left:1px solid var(--line)}
  .compare-bar{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-head .sub{text-align:left}
}
@media (max-width:639px){
  :root{--sec:56px}
  .container{padding:0 20px}
  .page-head{margin-top:132px}
  .page-head .container{padding-top:32px;padding-bottom:32px}
  .page-head h1{font-size:28px}
  .page-head .lede{font-size:15px}
  .header-top{padding:14px 0 12px}
  .logo{font-size:17px}
  .logo-mark{width:22px;height:22px}
  .btn{padding:0 18px;font-size:14px}
  .section-head h2,.split-body h2,.consult-info h2{font-size:23px}
  .metric .val{font-size:26px}
  .steps{grid-template-columns:1fr}
  .param-row{grid-template-columns:1fr}
  .param{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:16px;margin-top:0}
  .param:first-child{border-top:0;padding-top:0}
  .upgrade{padding:26px 22px;border-radius:var(--radius-lg)}
  .form-panel{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-item summary{font-size:16px;padding:18px 20px}
  .faq-item .ans{padding:0 20px 20px}
}
@media (hover:none){
  .tier-card:hover,.split-media:hover img{transform:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}