/* roulang page: index */
:root{
  --bg-base:#08131A;
  --bg-deep:#050D12;
  --bg-raise:#0E1F28;
  --brand:#1FD1B6;
  --brand-deep:#12A08C;
  --brand-soft:rgba(31,209,182,.12);
  --accent:#F4B740;
  --accent-soft:rgba(244,183,64,.14);
  --text-1:#E8F1F2;
  --text-2:#A9BFC7;
  --text-3:#6E8792;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(31,209,182,.35);
  --ok:#3BD98A;
  --warn:#F4B740;
  --err:#FF6B6B;
  --grad-brand:linear-gradient(135deg,#1FD1B6,#0E8FA8);
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset,0 12px 32px rgba(0,0,0,.35);
  --shadow-card-hover:0 1px 0 rgba(255,255,255,.06) inset,0 18px 44px rgba(0,0,0,.5);
  --shadow-glow:0 0 0 1px rgba(31,209,182,.5),0 8px 28px rgba(31,209,182,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:200ms var(--ease);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;color:var(--text-1);letter-spacing:-.01em;font-weight:700}
h1{font-size:40px;line-height:1.25;font-weight:800}
h2{font-size:30px;line-height:1.35}
h3{font-size:20px;line-height:1.5}
p{margin:0}
figure{margin:0}
input,select,textarea{font-family:inherit}
::selection{background:rgba(31,209,182,.28);color:#fff}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);font-size:15px;font-weight:700;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.btn-primary{background:var(--grad-brand);color:#041412;box-shadow:var(--shadow-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(31,209,182,.7),0 14px 34px rgba(31,209,182,.36)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:15px;font-weight:700;padding:4px 0}
.btn-text .arrow{transition:transform var(--t)}
.btn-text:hover .arrow{transform:translateX(4px)}
.btn-text:focus-visible{outline:2px solid var(--brand);outline-offset:4px;border-radius:4px}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(8,19,26,.78);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t),backdrop-filter var(--t);
}
.site-header.is-scrolled{
  background:rgba(6,15,21,.92);
  border-bottom-color:var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
.logo{display:flex;align-items:center;gap:12px;flex:none}
.logo-mark{
  width:40px;height:40px;border-radius:12px;flex:none;
  background:linear-gradient(150deg,rgba(31,209,182,.22),rgba(14,143,168,.08));
  border:1px solid var(--line-strong);
  display:grid;place-items:center;
  box-shadow:0 0 22px rgba(31,209,182,.18);
}
.logo-mark svg{width:20px;height:20px;stroke:var(--brand);fill:none;stroke-width:1.8;stroke-linecap:round}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-size:15px;font-weight:800;color:var(--text-1);letter-spacing:.02em}
.logo-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.08em;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  position:relative;display:inline-block;padding:10px 14px;border-radius:8px;
  font-size:15px;color:var(--text-2);transition:background var(--t),color var(--t);
}
.nav-links a:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.nav-links a.active{color:var(--brand);font-weight:700}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(31,209,182,.8);
}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-cta .btn{padding:11px 20px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;background:rgba(255,255,255,.02);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:transform var(--t),opacity var(--t)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-drawer{
  position:fixed;inset:76px 0 0 0;z-index:110;
  background:rgba(5,13,18,.98);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding:28px 24px 40px;
  display:flex;flex-direction:column;gap:18px;
  transform:translateY(-12px);opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity var(--t),transform var(--t),visibility var(--t);
  overflow-y:auto;
}
.mobile-drawer.is-open{opacity:1;transform:translateY(0);visibility:visible;pointer-events:auto}
.mobile-drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 18px;border-radius:12px;border:1px solid var(--line);background:var(--bg-raise);
  color:var(--text-1);font-size:16px;font-weight:600;
}
.mobile-drawer a.drawer-link.active{color:var(--brand);border-color:var(--line-strong)}
.mobile-drawer .btn{width:100%;height:50px}
.drawer-note{font-size:13px;color:var(--text-3);text-align:center;line-height:1.7}

/* ---------- 首屏 ---------- */
.hero{position:relative;padding:88px 0 96px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 30% 20%,#000 0%,transparent 72%);
  opacity:.7;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.45fr 1fr;gap:56px;align-items:center}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;font-size:12px;font-weight:600;
  background:var(--brand-soft);color:var(--brand);border:1px solid var(--line-strong);
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand)}
.hero h1{margin:22px 0 20px;max-width:14em}
.hero h1 .hl{color:var(--brand)}
.hero-sub{font-size:17px;line-height:1.85;color:var(--text-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:32px 0 30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3)}
.hero-trust svg{width:16px;height:16px;stroke:var(--brand);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

.hero-visual{position:relative}
.hero-panel{
  position:relative;border-radius:20px;padding:22px;
  background:rgba(14,31,40,.55);
  border:1px solid var(--line);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:0 1px 0 rgba(255,255,255,.05) inset,0 24px 60px rgba(0,0,0,.5);
  overflow:hidden;
}
.hero-panel::before{
  content:"";position:absolute;top:-40%;left:-20%;width:80%;height:80%;
  background:radial-gradient(circle,rgba(31,209,182,.16),transparent 65%);
  pointer-events:none;
}
.panel-top{position:relative;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:16px}
.panel-top .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px var(--ok)}
.panel-tag{margin-left:auto;font-size:11px;padding:3px 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent);border:1px solid rgba(244,183,64,.3)}
.mini-row{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.mini-stat{background:rgba(5,13,18,.6);border:1px solid var(--line);border-radius:12px;padding:14px}
.mini-stat strong{display:block;font-size:26px;font-weight:800;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums}
.mini-stat span{display:block;font-size:12px;color:var(--text-3);margin-top:4px}
.panel-figure{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--line);box-shadow:0 10px 26px rgba(0,0,0,.4)}
.panel-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.float-card{
  position:absolute;left:-12px;bottom:-18px;
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:14px;
  background:#0C1A21;border:1px solid var(--line-strong);
  box-shadow:0 16px 40px rgba(0,0,0,.55);
}
.float-card .fd{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
.float-card strong{display:block;font-size:13px;color:var(--text-1)}
.float-card span{display:block;font-size:11px;color:var(--text-3)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;position:relative}
.section.alt{background:var(--bg-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{display:flex;align-items:flex-start;gap:12px}
.section-head h2::before{
  content:"";flex:none;width:4px;height:18px;border-radius:2px;background:var(--brand);
  margin-top:10px;box-shadow:0 0 12px rgba(31,209,182,.7);
}
.section-head .lead{margin-top:14px;font-size:16px;color:var(--text-2);max-width:42em}
.section-head.with-action{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}

/* ---------- 痛点卡 ---------- */
.pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.pain-card{
  position:relative;background:var(--bg-raise);border:1px solid var(--line);
  border-left:3px solid var(--brand);border-radius:var(--r-card);
  padding:26px 26px 24px;box-shadow:var(--shadow-card);
  transition:transform var(--t),box-shadow var(--t),border-left-color var(--t);
}
.pain-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);border-left-color:var(--accent)}
.pain-card .idx{font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.14em;font-variant-numeric:tabular-nums}
.pain-card h3{font-size:17px;margin:10px 0 8px}
.pain-card p{font-size:14px;line-height:1.8;color:var(--text-3)}

/* ---------- 方案卡 ---------- */
.plan-grid{display:grid;grid-template-columns:1fr 1fr .82fr;gap:24px;align-items:stretch}
.plan-card{
  display:flex;flex-direction:column;
  background:var(--bg-raise);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.plan-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);border-color:var(--line-strong)}
.plan-thumb{position:relative}
.plan-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.plan-tag{
  position:absolute;left:14px;top:14px;font-size:12px;font-weight:700;
  padding:5px 12px;border-radius:999px;background:rgba(5,13,18,.86);
  color:var(--accent);border:1px solid rgba(244,183,64,.45);
}
.plan-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1}
.plan-body h3{font-size:20px}
.plan-body .desc{font-size:14px;color:var(--text-3);line-height:1.8}
.plan-points{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.plan-points li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2)}
.plan-points li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 8px rgba(31,209,182,.7);
}
.plan-body .btn-text{margin-top:auto}
.plan-card.side{background:#0B1A22}
.plan-card.side .plan-thumb img{aspect-ratio:16/9}
.plan-card.side .plan-body h3{font-size:18px}
.plan-card.side .plan-body{padding:22px}

/* ---------- 流程 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.flow-grid::before{
  content:"";position:absolute;left:6%;right:6%;top:22px;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-strong),var(--line-strong),transparent);
}
.flow-step{position:relative;padding-top:56px}
.flow-step .node{
  position:absolute;top:0;left:0;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;font-size:14px;font-weight:800;color:var(--accent);
  background:#0B1A22;border:1px solid var(--line-strong);font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 6px var(--bg-base);
}
.section.alt .flow-step .node{box-shadow:0 0 0 6px var(--bg-deep)}
.flow-step h3{font-size:17px;margin-bottom:8px}
.flow-step p{font-size:14px;color:var(--text-3);line-height:1.8}

/* ---------- 数据 ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:start}
.stat-card{
  background:var(--bg-raise);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--shadow-card);
  transition:transform var(--t),border-color var(--t);
}
.stat-card:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.stat-card:nth-child(2),.stat-card:nth-child(4){margin-top:24px}
.stat-card .value{font-size:44px;font-weight:800;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-card .unit{font-size:16px;color:var(--accent);font-weight:700;margin-left:4px}
.stat-card .cap{margin-top:10px;font-size:14px;color:var(--text-3)}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--bg-raise);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;box-shadow:var(--shadow-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover);border-color:var(--line-strong)}
.news-card:hover h3{color:var(--brand)}
.news-thumb{position:relative;border-radius:12px;overflow:hidden;background:#0A161D}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.thumb-fallback{
  display:grid;place-items:center;aspect-ratio:16/10;background:#0A161D;color:var(--text-3);
}
.thumb-fallback svg{width:40px;height:40px;stroke:var(--text-3);fill:none;stroke-width:1.4}
.news-badge{
  position:absolute;left:10px;top:10px;font-size:12px;font-weight:700;
  padding:4px 11px;border-radius:999px;background:rgba(5,13,18,.86);
  color:var(--accent);border:1px solid rgba(244,183,64,.45);
}
.news-card h3{
  font-size:17px;line-height:1.55;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--t);
}
.news-card .excerpt{
  font-size:14px;color:var(--text-3);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:6px;border-top:1px solid var(--line)}
.news-foot time{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}
.news-foot .news-arrow{color:var(--brand);font-size:15px;transition:transform var(--t)}
.news-card:hover .news-arrow{transform:translateX(4px)}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:56px 24px;border:1px dashed var(--line);border-radius:var(--r-card);background:rgba(14,31,40,.5);
}
.empty-state svg{width:40px;height:40px;stroke:var(--text-3);fill:none;stroke-width:1.4}
.empty-state p{font-size:15px;color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  background:var(--bg-raise);border:1px solid var(--line);border-radius:12px;
  overflow:hidden;transition:border-color var(--t);
}
.faq-item:hover{border-color:var(--line-strong)}
.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-1);
}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-2px}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-strong);
  display:grid;place-items:center;color:var(--brand);font-size:16px;line-height:1;
  transition:transform var(--t),background var(--t);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand-soft)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease)}
.faq-a .inner{padding:0 22px 22px 24px;border-left:2px solid var(--accent);margin-left:22px;font-size:15px;line-height:1.8;color:var(--text-2)}
.faq-item.is-open .faq-a{max-height:420px}

/* ---------- 表单区 ---------- */
.contact-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:start}
.contact-intro h2{margin-bottom:16px}
.contact-intro .lines{display:flex;flex-direction:column;gap:10px;font-size:15px;color:var(--text-2);margin-bottom:26px}
.trust-list{display:flex;flex-direction:column;gap:12px}
.trust-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-3)}
.trust-list svg{flex:none;width:18px;height:18px;stroke:var(--brand);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;margin-top:3px}
.form-card{
  background:var(--bg-raise);border:1px solid var(--line);border-radius:20px;
  padding:32px;box-shadow:var(--shadow-card);
}
.form-card h3{font-size:19px;margin-bottom:6px}
.form-card .form-note{font-size:13px;color:var(--text-3);margin-bottom:22px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field > label{font-size:14px;color:var(--text-2);font-weight:600}
.field input,.field select,.field textarea{
  width:100%;background:#0C1A21;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:12px 14px;color:var(--text-1);font-size:15px;line-height:1.6;
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.field textarea{resize:vertical;min-height:104px}
.field input::placeholder,.field textarea::placeholder{color:#4E6570}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,209,182,.16);background:#0D1E26;
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field select option{background:#0C1A21;color:var(--text-1)}
.chips{display:flex;flex-wrap:wrap;gap:10px;position:relative}
.chip{position:relative;display:inline-flex}
.chip input{position:absolute;opacity:0;width:0;height:0;pointer-events:none}
.chip span{
  display:inline-block;padding:9px 16px;border-radius:999px;border:1px solid var(--line);
  font-size:14px;color:var(--text-2);cursor:pointer;transition:all var(--t);
}
.chip span:hover{border-color:var(--line-strong);color:var(--text-1)}
.chip input:checked + span{background:var(--brand-soft);border-color:var(--line-strong);color:var(--brand);font-weight:700}
.chip input:focus-visible + span{outline:2px solid var(--brand);outline-offset:2px}
.check-row{display:flex;align-items:flex-start;gap:10px;margin:6px 0 20px}
.check-row input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand);flex:none}
.check-row label{font-size:13px;line-height:1.7;color:var(--text-3)}
.form-submit{width:100%}
.privacy-bar{
  margin-top:40px;padding:18px 22px;border-radius:12px;
  background:rgba(14,31,40,.6);border:1px solid var(--line);
  font-size:13px;line-height:1.75;color:var(--text-3);
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-3);max-width:20em}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:16px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-3);transition:color var(--t)}
.footer-col a:hover{color:var(--brand)}
.footer-contact li{font-size:14px;color:var(--text-3);line-height:1.8}
.footer-contact strong{color:var(--text-2);font-weight:600}
.qr-slot{
  margin-top:14px;width:104px;height:104px;border-radius:12px;border:1px dashed var(--line-strong);
  display:grid;place-items:center;font-size:12px;color:var(--text-3);text-align:center;line-height:1.5;
  background:rgba(255,255,255,.02);
}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;gap:18px}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 弹层 ---------- */
.modal{
  position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;
  padding:24px;opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity var(--t),visibility var(--t);
}
.modal.is-open{opacity:1;visibility:visible;pointer-events:auto}
.modal-mask{position:absolute;inset:0;background:rgba(4,10,14,.7);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.modal-panel{
  position:relative;width:520px;max-width:100%;max-height:88vh;overflow-y:auto;
  border-radius:20px;padding:30px;
  background:rgba(14,31,40,.9);border:1px solid var(--line);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:0 30px 70px rgba(0,0,0,.6);
  transform:translateY(12px);opacity:0;transition:transform 240ms var(--ease),opacity 240ms var(--ease);
}
.modal.is-open .modal-panel{transform:translateY(0);opacity:1}
.modal-close{
  position:absolute;right:14px;top:14px;width:40px;height:40px;border-radius:10px;
  display:grid;place-items:center;color:var(--text-3);border:1px solid var(--line);
  transition:color var(--t),border-color var(--t),background var(--t);
}
.modal-close:hover{color:var(--text-1);border-color:var(--line-strong);background:rgba(255,255,255,.04)}
.modal-panel h3{font-size:20px;margin-bottom:6px}
.modal-panel .form-note{font-size:13px;color:var(--text-3);margin-bottom:20px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 22px}
  .hero-grid{gap:40px}
  h1{font-size:36px}
  h2{font-size:28px}
}
@media (max-width:1023px){
  .nav-links,.nav-cta .btn{display:none}
  .nav-toggle{display:flex}
  .hero{padding:64px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero h1{max-width:none;font-size:34px}
  .hero-panel{max-width:560px}
  .float-card{display:none}
  .pain-grid{grid-template-columns:1fr}
  .plan-grid{grid-template-columns:1fr 1fr}
  .plan-card.side{grid-column:1/-1}
  .flow-grid{grid-template-columns:1fr 1fr;row-gap:36px}
  .flow-grid::before{display:none}
  .stats-grid{grid-template-columns:1fr 1fr;row-gap:24px}
  .stat-card:nth-child(2),.stat-card:nth-child(4){margin-top:0}
  .news-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:76px 0}
}
@media (max-width:767px){
  body{font-size:15px}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .container{padding:0 18px}
  .nav-wrap{height:68px}
  .mobile-drawer{inset:68px 0 0 0}
  .logo-text strong{font-size:14px}
  .logo-text em{font-size:10px}
  .hero{padding:52px 0 60px}
  .hero h1{font-size:27px;line-height:1.32}
  .hero-sub{font-size:15px}
  .hero-actions{gap:12px;margin:26px 0 24px}
  .hero-actions .btn{flex:1 1 100%;height:48px}
  .hero-trust{gap:14px}
  .hero-trust li{font-size:13px}
  .panel-figure img{aspect-ratio:16/10;height:180px}
  .mini-stat strong{font-size:22px}
  .section{padding:60px 0}
  .section-head{margin-bottom:32px}
  .section-head.with-action{flex-direction:column;align-items:flex-start;gap:14px}
  .pain-card{padding:22px}
  .plan-grid{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr;row-gap:28px}
  .flow-step{padding-top:0;padding-left:60px;min-height:44px}
  .flow-step .node{top:0;left:0}
  .flow-step:not(:last-child)::after{
    content:"";position:absolute;left:21px;top:52px;bottom:-24px;width:1px;background:var(--line-strong);
  }
  .stats-grid{grid-template-columns:1fr 1fr;gap:16px}
  .stat-card{padding:20px 18px}
  .stat-card .value{font-size:32px}
  .stat-card .cap{font-size:13px}
  .news-grid{grid-template-columns:1fr}
  .faq-q{font-size:16px;padding:18px}
  .faq-a .inner{margin-left:18px;padding:0 18px 18px 18px}
  .form-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .modal{padding:0;align-items:flex-end}
  .modal-panel{width:100%;border-radius:20px 20px 0 0;max-height:90vh;padding:26px 20px 30px}
  .form-submit{width:100%}
  .qr-slot{width:96px;height:96px}
}
@media (max-width:519px){
  .hero h1{font-size:24px}
  .mini-row{grid-template-columns:1fr}
  .chips{gap:8px}
  .chip span{padding:8px 13px;font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --bg-base:#08131A;
  --bg-deep:#050D12;
  --bg-raise:#0E1F28;
  --brand:#1FD1B6;
  --brand-deep:#12A08C;
  --brand-soft:rgba(31,209,182,.12);
  --accent:#F4B740;
  --accent-soft:rgba(244,183,64,.14);
  --text-1:#E8F1F2;
  --text-2:#A9BFC7;
  --text-3:#6E8792;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(31,209,182,.35);
  --success:#3BD98A;
  --warning:#F4B740;
  --error:#FF6B6B;
  --grad-brand:linear-gradient(135deg,#1FD1B6,#0E8FA8);
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 12px 32px rgba(0,0,0,.35);
  --shadow-hover:0 18px 44px rgba(0,0,0,.5);
  --shadow-glow:0 0 0 1px rgba(31,209,182,.5), 0 8px 28px rgba(31,209,182,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-2);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;padding:0;}
h1,h2,h3,h4{margin:0;color:var(--text-1);line-height:1.3;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(31,209,182,.28);color:#fff;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(8,19,26,.86);
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease),border-color .22s var(--ease),backdrop-filter .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(8,19,26,.72);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;}
.logo{display:inline-flex;align-items:center;gap:12px;color:var(--text-1);}
.logo-mark{
  width:40px;height:40px;border-radius:12px;flex:none;
  display:grid;place-items:center;
  background:var(--brand-soft);
  border:1px solid var(--line-strong);
  box-shadow:0 0 18px rgba(31,209,182,.18) inset;
}
.logo-mark svg{width:22px;height:22px;fill:none;stroke:var(--brand);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:15px;font-weight:800;letter-spacing:.01em;}
.logo-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.16em;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;
  padding:9px 14px;border-radius:8px;
  font-size:14.5px;color:var(--text-2);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-links a:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.nav-links a.active{color:var(--brand);}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(31,209,182,.8);
}
.nav-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  position:relative;
}
.nav-toggle span{
  display:block;width:18px;height:2px;margin:3.5px auto;border-radius:2px;
  background:var(--text-1);transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

.mobile-drawer{
  display:none;
  padding:8px 24px 28px;
  border-top:1px solid var(--line);
  background:var(--bg-deep);
}
.mobile-drawer.is-open{display:block;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 4px;font-size:16px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-link:hover,.drawer-link.active{color:var(--brand);}
.drawer-link span{color:var(--text-3);}
.mobile-drawer .btn{width:100%;margin-top:20px;}
.drawer-note{margin-top:16px;font-size:13px;line-height:1.7;color:var(--text-3);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;line-height:1;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{
  background:var(--grad-brand);color:#041412;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(31,209,182,.6),0 12px 32px rgba(31,209,182,.36);}
.btn-primary:active{transform:translateY(0);background:var(--brand-deep);}
.btn-ghost{
  background:transparent;color:var(--brand);
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:700;font-size:15px;
}
.btn-text .arrow{transition:transform .2s var(--ease);}
.btn-text:hover .arrow{transform:translateX(4px);}
.btn-sm{padding:10px 18px;font-size:14px;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
  color:var(--brand);background:var(--brand-soft);
  border:1px solid rgba(31,209,182,.24);
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand);}
.badge-gold{color:var(--accent);background:var(--accent-soft);border-color:rgba(244,183,64,.3);}

/* ---------- reading progress ---------- */
.reading-progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:var(--grad-brand);z-index:120;
  box-shadow:0 0 12px rgba(31,209,182,.7);
  transition:width .1s linear;
}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  padding:120px 0 46px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(640px 280px at 12% 0%, rgba(31,209,182,.12), transparent 70%),
    var(--bg-base);
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px, transparent 1px);
  background-size:26px 26px;opacity:.05;
}
.article-hero .container{position:relative;z-index:1;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:20px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:rgba(255,255,255,.18);}
.breadcrumb .current{color:var(--text-2);}
.article-title{
  font-size:40px;font-weight:800;line-height:1.25;
  max-width:900px;margin:16px 0 20px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  font-size:13.5px;color:var(--text-3);
  padding-top:18px;border-top:1px solid var(--line);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums;}
.article-meta i{width:5px;height:5px;border-radius:50%;background:var(--brand);display:inline-block;}

/* ---------- article layout ---------- */
.article-main{padding:56px 0 80px;}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;}
.article-body{min-width:0;}

.prose{max-width:760px;font-size:16px;line-height:1.9;color:var(--text-2);}
.prose > *:first-child{margin-top:0;}
.prose p{margin:0 0 18px;}
.prose h2{
  position:relative;font-size:25px;font-weight:700;color:var(--text-1);
  margin:38px 0 16px;padding-left:16px;line-height:1.4;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.36em;width:4px;height:18px;border-radius:2px;background:var(--brand);
}
.prose h3{font-size:19px;font-weight:700;color:var(--text-1);margin:26px 0 12px;}
.prose h4{font-size:17px;color:var(--text-1);margin:20px 0 10px;}
.prose strong{color:var(--text-1);font-weight:700;}
.prose a{color:var(--brand);border-bottom:1px solid rgba(31,209,182,.35);}
.prose a:hover{border-bottom-color:var(--brand);}
.prose ul,.prose ol{margin:0 0 18px;padding-left:24px;}
.prose ul li{list-style:disc;}
.prose ol li{list-style:decimal;}
.prose li{margin:8px 0;}
.prose li::marker{color:var(--brand);}
.prose blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--bg-raise);
  border-left:3px solid var(--accent);
  border-radius:0 12px 12px 0;
  color:var(--text-2);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{
  width:auto;max-width:100%;height:auto;margin:22px auto;
  border-radius:12px;border:1px solid var(--line);
  box-shadow:0 12px 32px rgba(0,0,0,.35);
}
.prose figure{margin:24px 0;}
.prose figure img{margin:0 auto;}
.prose figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.prose table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;}
.prose th,.prose td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top;}
.prose th{background:rgba(255,255,255,.04);color:var(--text-1);font-weight:700;}
.prose tbody tr:nth-child(even) td{background:rgba(255,255,255,.02);}
.prose hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
.prose code{
  background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;
  font-size:14px;color:var(--accent);
}

/* ---------- article actions ---------- */
.article-actions{
  max-width:760px;margin-top:44px;padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.share-row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);}
.share-icon{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--text-3);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.share-icon:hover{color:var(--brand);border-color:var(--line-strong);background:var(--brand-soft);}
.share-icon svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- empty state ---------- */
.empty-state{
  max-width:760px;text-align:center;padding:64px 24px;
  background:var(--bg-raise);border:1px solid var(--line);border-radius:var(--radius-lg);
}
.empty-state svg{width:40px;height:40px;margin:0 auto 16px;stroke:var(--text-3);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.empty-state p{color:var(--text-3);margin-bottom:20px;}

/* ---------- sidebar ---------- */
.article-side{display:flex;flex-direction:column;gap:20px;align-self:start;position:sticky;top:96px;}
.side-card{
  background:var(--bg-raise);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:22px 20px;
  box-shadow:var(--shadow-card);
}
.side-card h3{
  font-size:15px;font-weight:700;color:var(--text-1);
  padding-left:12px;position:relative;margin-bottom:14px;
}
.side-card h3::before{
  content:"";position:absolute;left:0;top:.25em;width:3px;height:14px;border-radius:2px;background:var(--brand);
}
.side-list li{
  display:flex;justify-content:space-between;gap:12px;
  padding:9px 0;font-size:13.5px;color:var(--text-3);
  border-bottom:1px dashed rgba(255,255,255,.06);
}
.side-list li:last-child{border-bottom:0;}
.side-list b{color:var(--text-2);font-weight:600;font-variant-numeric:tabular-nums;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:11px 0;font-size:14px;color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.05);
}
.side-links a:last-child{border-bottom:0;}
.side-links a:hover{color:var(--brand);}
.side-card .btn{width:100%;margin-top:16px;}
.side-note{font-size:12.5px;line-height:1.8;color:var(--text-3);margin-top:12px;}

/* ---------- CTA band ---------- */
.cta-band{padding:0 0 96px;}
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:20px;padding:52px 48px;
  background:linear-gradient(135deg,rgba(31,209,182,.14),rgba(14,143,168,.06) 60%,rgba(244,183,64,.08));
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-panel::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  border:1px solid rgba(31,209,182,.18);pointer-events:none;
}
.cta-copy{max-width:600px;position:relative;z-index:1;}
.cta-copy h2{font-size:28px;font-weight:800;margin-bottom:12px;}
.cta-copy p{font-size:15px;line-height:1.85;color:var(--text-2);}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1;}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-3);margin-top:18px;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:11px;font-size:14px;color:var(--text-3);}
.footer-col ul li a{color:var(--text-3);}
.footer-col ul li a:hover{color:var(--brand);}
.footer-contact strong{color:var(--brand);font-weight:700;}
.qr-slot{
  margin-top:18px;width:104px;height:104px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.16);
  display:grid;place-items:center;text-align:center;
  font-size:12px;line-height:1.6;color:var(--text-3);
  background:rgba(255,255,255,.02);
}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;align-items:center;gap:18px;}
.footer-bottom .links a{color:var(--text-3);}
.footer-bottom .links a:hover{color:var(--brand);}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:200;display:none;}
.modal.is-open{display:block;}
.modal-backdrop{
  position:absolute;inset:0;background:rgba(4,10,14,.7);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.modal-panel{
  position:relative;z-index:2;
  width:min(520px,calc(100% - 32px));
  margin:6vh auto 0;max-height:88vh;overflow-y:auto;
  background:rgba(14,31,40,.94);
  border:1px solid var(--line-strong);
  border-radius:20px;padding:32px 28px;
  box-shadow:0 30px 70px rgba(0,0,0,.6);
  animation:modalIn .24s var(--ease);
}
@keyframes modalIn{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:translateY(0);}}
.modal-close{
  position:absolute;top:14px;right:14px;width:40px;height:40px;border-radius:10px;
  display:grid;place-items:center;color:var(--text-3);font-size:18px;
  border:1px solid var(--line);transition:color .2s var(--ease),background .2s var(--ease);
}
.modal-close:hover{color:var(--text-1);background:rgba(255,255,255,.06);}
.modal-panel h2{font-size:22px;font-weight:800;margin-bottom:8px;}
.modal-sub{font-size:13.5px;color:var(--text-3);margin-bottom:22px;}

/* ---------- form ---------- */
.field{margin-bottom:16px;}
.field > label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;}
.field input[type="text"],
.field input[type="tel"],
.field textarea,
.field select{
  width:100%;padding:12px 14px;border-radius:var(--radius-md);
  background:#0C1A21;border:1px solid var(--line);color:var(--text-1);
  font-size:15px;line-height:1.5;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:#4E6470;}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(31,209,182,.16);
}
.field textarea{resize:vertical;min-height:96px;}
.chip-group{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  padding:8px 16px;border-radius:999px;font-size:13.5px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--text-2);
  transition:all .18s var(--ease);
}
.chip:hover{border-color:var(--line-strong);color:var(--text-1);}
.chip.is-checked{background:var(--brand-soft);border-color:var(--line-strong);color:var(--brand);font-weight:700;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;line-height:1.7;color:var(--text-3);margin:18px 0 20px;}
.check-row input{margin-top:4px;width:16px;height:16px;accent-color:var(--brand);flex:none;}
.check-row a{color:var(--brand);}
.form-note{font-size:12.5px;line-height:1.7;color:var(--text-3);margin-top:14px;}
.form-submit{width:100%;}

/* ---------- responsive ---------- */
@media (min-width:1280px){
  .article-grid{grid-template-columns:minmax(0,1fr) 280px;}
}
@media (max-width:1279px){
  .article-side{position:static;}
  .article-side{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));}
  .side-card:last-child{grid-column:1 / -1;}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-toggle{display:block;}
  .nav-cta .btn-primary{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .article-title{font-size:32px;}
  .cta-panel{padding:40px 32px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .article-hero{padding:96px 0 34px;}
  .article-title{font-size:28px;}
  .article-main{padding:40px 0 60px;}
  .prose{font-size:15px;line-height:1.9;}
  .prose h2{font-size:21px;margin-top:30px;}
  .prose h3{font-size:17.5px;}
  .prose table{display:block;overflow-x:auto;white-space:nowrap;}
  .article-side{grid-template-columns:1fr;}
  .cta-band{padding-bottom:64px;}
  .cta-copy h2{font-size:23px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .modal-panel{
    width:100%;margin:0;position:absolute;bottom:0;left:0;right:0;
    max-height:92vh;border-radius:20px 20px 0 0;padding:28px 20px 32px;
  }
}
@media (max-width:520px){
  .article-meta{gap:8px 16px;font-size:12.5px;}
  .article-title{font-size:24px;}
  .btn{padding:13px 20px;font-size:14.5px;}
  .article-actions{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg-base:#08131A;
  --bg-deep:#050D12;
  --bg-raise:#0E1F28;
  --brand:#1FD1B6;
  --brand-deep:#12A08C;
  --brand-soft:rgba(31,209,182,.12);
  --accent:#F4B740;
  --accent-soft:rgba(244,183,64,.14);
  --text-1:#E8F1F2;
  --text-2:#A9BFC7;
  --text-3:#6E8792;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(31,209,182,.35);
  --ok:#3BD98A;
  --err:#FF6B6B;
  --grad-brand:linear-gradient(135deg,#1FD1B6,#0E8FA8);
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 12px 32px rgba(0,0,0,.35);
  --shadow-hover:0 18px 44px rgba(0,0,0,.5);
  --shadow-glow:0 0 0 1px rgba(31,209,182,.5), 0 8px 28px rgba(31,209,182,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-2);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;}
::selection{background:rgba(31,209,182,.3);color:#fff;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:6px;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(8,19,26,.9);
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease),border-color .22s var(--ease),backdrop-filter .22s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(8,19,26,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:28px;height:var(--header-h);}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--brand-soft);
  border:1px solid var(--line-strong);
  box-shadow:0 0 18px rgba(31,209,182,.18);
}
.logo-mark svg{width:20px;height:20px;fill:none;stroke:var(--brand);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:15px;font-weight:800;color:var(--text-1);letter-spacing:.02em;}
.logo-text em{font-size:11px;font-style:normal;color:var(--text-3);letter-spacing:.08em;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-links a{
  position:relative;
  padding:9px 14px;
  border-radius:8px;
  font-size:15px;
  color:var(--text-2);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-links a:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.nav-links a.active{color:var(--brand);}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);box-shadow:0 0 10px rgba(31,209,182,.7);
}
.nav-cta{display:flex;align-items:center;gap:10px;margin-left:8px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;line-height:1.2;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{
  background:var(--grad-brand);
  color:#041412;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{background:linear-gradient(135deg,#25e2c4,#12a2bb);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(31,209,182,.45);}
.btn-ghost{
  background:transparent;
  border:1px solid var(--line-strong);
  color:var(--brand);
}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 18px;font-size:14px;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--brand);
}
.text-link span{transition:transform .2s var(--ease);}
.text-link:hover span{transform:translateX(4px);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);
  flex-direction:column;justify-content:center;align-items:center;gap:5px;
  background:rgba(255,255,255,.03);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .22s var(--ease),opacity .18s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{
  display:none;
  position:fixed;left:0;right:0;top:var(--header-h);bottom:0;
  z-index:110;
  padding:24px;
  background:rgba(5,13,18,.98);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow-y:auto;
  flex-direction:column;
  gap:6px;
}
.mobile-drawer.is-open{display:flex;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 16px;border-radius:12px;
  border:1px solid var(--line);
  font-size:16px;color:var(--text-2);
  background:rgba(255,255,255,.02);
}
.drawer-link.active{color:var(--brand);border-color:var(--line-strong);background:var(--brand-soft);}
.drawer-link span{color:var(--text-3);}
.mobile-drawer .btn{margin-top:14px;width:100%;height:48px;}
.drawer-note{margin-top:16px;font-size:13px;color:var(--text-3);line-height:1.7;}

/* ---------- breadcrumb ---------- */
.crumb{padding:26px 0 0;font-size:13px;color:var(--text-3);}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{margin:0 8px;color:rgba(255,255,255,.18);}
.crumb .cur{color:var(--text-2);}

/* ---------- page hero ---------- */
.page-hero{position:relative;padding:26px 0 48px;overflow:hidden;}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.05;pointer-events:none;
}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);
  border:1px solid rgba(31,209,182,.22);
  color:var(--brand);
  font-size:12px;font-weight:700;letter-spacing:.04em;
}
.badge i{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand);}
.page-hero h1{
  margin-top:18px;
  font-size:40px;line-height:1.25;font-weight:800;
  color:var(--text-1);letter-spacing:-.01em;
  max-width:820px;
}
.page-hero .lede{
  margin-top:16px;max-width:700px;
  font-size:17px;color:var(--text-2);
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 13px;border-radius:999px;
  font-size:12px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.tag.gold{color:var(--accent);border-color:rgba(244,183,64,.3);background:var(--accent-soft);}

/* ---------- anchor bar ---------- */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:60;
  padding:12px 0;
  background:rgba(8,19,26,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.pill-link{
  flex:0 0 auto;
  padding:9px 18px;border-radius:999px;
  border:1px solid var(--line);
  font-size:14px;color:var(--text-2);
  background:rgba(255,255,255,.03);
  transition:all .2s var(--ease);
}
.pill-link:hover{border-color:var(--line-strong);color:var(--text-1);}
.pill-link.active{background:var(--brand-soft);border-color:var(--line-strong);color:var(--brand);font-weight:700;}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section.alt{background:var(--bg-raise);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--accent);font-weight:700;
  text-transform:uppercase;
}
h2.section-title{
  position:relative;margin-top:12px;
  padding-left:14px;
  font-size:30px;line-height:1.35;font-weight:700;
  color:var(--text-1);letter-spacing:-.01em;
}
h2.section-title::before{
  content:"";position:absolute;left:0;top:8px;width:4px;height:22px;
  border-radius:2px;background:var(--brand);box-shadow:0 0 12px rgba(31,209,182,.6);
}
.section-head p{margin-top:14px;font-size:16px;color:var(--text-2);max-width:680px;}

/* ---------- matrix rows ---------- */
.matrix-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:56px 0;
  border-top:1px solid var(--line);
  scroll-margin-top:140px;
}
.matrix-row:first-of-type{border-top:0;padding-top:8px;}
.matrix-row .copy h3{
  font-size:24px;line-height:1.4;font-weight:700;color:var(--text-1);
  letter-spacing:-.01em;
}
.matrix-row .copy p{margin-top:16px;font-size:16px;color:var(--text-2);max-width:42ch;}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.point-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-2);
}
.point-list .dot{
  flex:0 0 auto;width:20px;height:20px;margin-top:4px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--brand-soft);border:1px solid rgba(31,209,182,.3);
}
.point-list .dot svg{width:11px;height:11px;stroke:var(--brand);fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;}
.copy .text-link{margin-top:24px;}
.figure{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  background:var(--bg-raise);
}
.figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease);}
.figure:hover img{transform:scale(1.03);}
.figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 16px;
  font-size:13px;color:var(--text-2);
  background:linear-gradient(to top,rgba(4,10,14,.88),rgba(4,10,14,0));
}
.matrix-row.flip .figure{order:-1;}

/* ---------- stat strip ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.stat-item{
  padding:26px 22px;
  border-radius:var(--r-card);
  background:var(--bg-base);
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  box-shadow:var(--shadow-card);
  transition:box-shadow .22s var(--ease),border-left-color .22s var(--ease),transform .22s var(--ease);
}
.stat-item:hover{box-shadow:var(--shadow-hover);border-left-color:var(--accent);transform:translateY(-3px);}
.stat-num{
  font-family:Inter,"SFMono-Regular",ui-monospace,monospace;
  font-variant-numeric:tabular-nums;
  font-size:36px;line-height:1.1;font-weight:800;color:var(--brand);
}
.stat-num small{font-size:15px;color:var(--accent);font-weight:700;margin-left:4px;}
.stat-item p{margin-top:10px;font-size:14px;color:var(--text-3);}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:860px;}
.faq-item{
  background:var(--bg-base);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;
  font-size:17px;font-weight:700;color:var(--text-1);
}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--brand);
  font-size:16px;line-height:1;font-weight:700;
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand-soft);}
.faq-a{display:none;padding:0 20px 20px;}
.faq-item.open .faq-a{display:block;}
.faq-a p{
  padding-left:16px;border-left:2px solid rgba(244,183,64,.55);
  font-size:15px;line-height:1.8;color:var(--text-2);
}

/* ---------- cta / form ---------- */
.cta-wrap{
  display:grid;grid-template-columns:0.9fr 1.1fr;gap:56px;align-items:start;
}
.cta-copy h2{
  position:relative;padding-left:14px;
  font-size:30px;line-height:1.35;font-weight:700;color:var(--text-1);
}
.cta-copy h2::before{
  content:"";position:absolute;left:0;top:8px;width:4px;height:22px;
  border-radius:2px;background:var(--brand);box-shadow:0 0 12px rgba(31,209,182,.6);
}
.cta-copy p{margin-top:16px;font-size:16px;max-width:40ch;}
.trust-list{margin-top:26px;display:flex;flex-direction:column;gap:12px;}
.trust-list li{display:flex;gap:10px;align-items:center;font-size:15px;color:var(--text-2);}
.trust-list svg{flex:0 0 auto;width:16px;height:16px;stroke:var(--brand);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

.form-panel{
  padding:28px;
  border-radius:20px;
  border:1px solid var(--line);
  background:rgba(14,31,40,.72);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.form-panel::before{
  content:"";position:absolute;top:-40%;left:-10%;width:70%;height:90%;
  background:radial-gradient(circle,rgba(31,209,182,.14),transparent 65%);
  pointer-events:none;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;position:relative;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1/-1;}
.field label{font-size:14px;color:var(--text-2);font-weight:600;}
.field input,.field textarea,.field select{
  width:100%;
  padding:12px 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:#0C1A21;
  color:var(--text-1);
  font-size:15px;
  line-height:1.6;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,209,182,.16);
}
.field textarea{resize:vertical;min-height:96px;}
.pill-group{display:flex;flex-wrap:wrap;gap:10px;}
.pill-group label{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 15px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  font-size:14px;color:var(--text-2);cursor:pointer;
  transition:all .2s var(--ease);
}
.pill-group label:hover{border-color:var(--line-strong);color:var(--text-1);}
.pill-group input{
  appearance:none;-webkit-appearance:none;
  width:14px;height:14px;margin:0;border-radius:50%;
  border:1px solid rgba(255,255,255,.24);
  transition:all .2s var(--ease);
  flex:0 0 auto;
}
.pill-group input:checked{background:var(--brand);border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,209,182,.18);}
.pill-group label:has(input:checked){border-color:var(--line-strong);background:var(--brand-soft);color:var(--text-1);}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--text-3);line-height:1.7;grid-column:1/-1;}
.check-row input{
  appearance:none;-webkit-appearance:none;
  flex:0 0 auto;width:16px;height:16px;margin-top:3px;
  border-radius:5px;border:1px solid rgba(255,255,255,.24);
  transition:all .2s var(--ease);
}
.check-row input:checked{background:var(--brand);border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,209,182,.16);}
.check-row a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.form-actions{grid-column:1/-1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-actions .btn{min-width:180px;}
.form-note{grid-column:1/-1;font-size:13px;color:var(--text-3);line-height:1.7;border-top:1px solid var(--line);padding-top:16px;}
.form-msg{grid-column:1/-1;font-size:14px;color:var(--ok);display:none;}
.form-msg.show{display:block;}

/* ---------- modal ---------- */
.modal{
  position:fixed;inset:0;z-index:200;
  display:none;align-items:center;justify-content:center;
  padding:24px;
  background:rgba(4,10,14,.7);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}
.modal.open{display:flex;}
.modal-panel{
  position:relative;width:100%;max-width:520px;
  max-height:88vh;overflow-y:auto;
  padding:28px;
  border-radius:20px;
  border:1px solid var(--line);
  background:rgba(14,31,40,.96);
  box-shadow:var(--shadow-hover);
  animation:modalIn .24s var(--ease);
}
@keyframes modalIn{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:translateY(0);}}
.modal-panel h3{font-size:21px;font-weight:700;color:var(--text-1);}
.modal-panel .sub{margin-top:8px;font-size:14px;color:var(--text-3);}
.modal-close{
  position:absolute;top:14px;right:14px;
  width:40px;height:40px;border-radius:10px;
  display:grid;place-items:center;
  border:1px solid var(--line);
  color:var(--text-2);font-size:18px;line-height:1;
  transition:all .2s var(--ease);
}
.modal-close:hover{background:rgba(255,255,255,.06);color:var(--text-1);}
.modal .form-grid{margin-top:20px;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  font-size:14px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-3);line-height:1.8;max-width:32ch;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text-1);letter-spacing:.04em;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-3);}
.footer-col a:hover{color:var(--brand);}
.footer-contact li{font-size:14px;color:var(--text-3);}
.footer-contact strong{color:var(--text-2);font-weight:700;}
.qr-slot{
  margin-top:16px;width:118px;height:88px;
  display:grid;place-items:center;text-align:center;
  border:1px dashed rgba(255,255,255,.16);border-radius:10px;
  font-size:12px;line-height:1.5;color:var(--text-3);
}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 22px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-cta .btn-primary{display:none;}
  .matrix-row{grid-template-columns:1fr;gap:32px;padding:44px 0;}
  .matrix-row.flip .figure{order:0;}
  .matrix-row .copy p{max-width:none;}
  .cta-wrap{grid-template-columns:1fr;gap:36px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .page-hero h1{font-size:32px;}
  .section{padding:64px 0;}
}
@media (max-width:767px){
  :root{--header-h:64px;}
  .container{padding:0 18px;}
  .page-hero h1{font-size:27px;line-height:1.3;}
  .page-hero .lede{font-size:15px;}
  h2.section-title,.cta-copy h2{font-size:22px;}
  .matrix-row .copy h3{font-size:19px;}
  .matrix-row .copy p,.section-head p,.cta-copy p{font-size:15px;}
  .stat-num{font-size:30px;}
  .form-grid{grid-template-columns:1fr;}
  .form-actions .btn{width:100%;}
  .form-panel{padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .section{padding:52px 0;}
  .modal{padding:0;align-items:flex-end;}
  .modal-panel{max-width:100%;border-radius:20px 20px 0 0;max-height:92vh;}
  .figure img{aspect-ratio:16/11;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --bg-base:#08131A;
  --bg-deep:#050D12;
  --bg-raise:#0E1F28;
  --brand:#1FD1B6;
  --brand-deep:#12A08C;
  --brand-soft:rgba(31,209,182,.12);
  --accent:#F4B740;
  --accent-soft:rgba(244,183,64,.14);
  --text-1:#E8F1F2;
  --text-2:#A9BFC7;
  --text-3:#6E8792;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(31,209,182,.35);
  --success:#3BD98A;
  --error:#FF6B6B;
  --grad-brand:linear-gradient(135deg,#1FD1B6,#0E8FA8);
  --r-lg:20px;
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset,0 12px 32px rgba(0,0,0,.35);
  --shadow-hover:0 18px 44px rgba(0,0,0,.5);
  --shadow-glow:0 0 0 1px rgba(31,209,182,.5),0 8px 28px rgba(31,209,182,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg-base);
  color:var(--text-2);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{color:var(--text-1);margin:0;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
::selection{background:rgba(31,209,182,.28);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--raise{background:var(--bg-raise);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:30px;font-weight:700;position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:6px;width:4px;height:18px;border-radius:2px;background:var(--brand);box-shadow:0 0 12px rgba(31,209,182,.6)}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;line-height:1.2;
  transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--grad-brand);color:#041412;box-shadow:var(--shadow-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(31,209,182,.7),0 12px 34px rgba(31,209,182,.38)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(31,209,182,.5),0 6px 18px rgba(31,209,182,.24)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:700;font-size:15px;background:none;border:0;padding:0;cursor:pointer}
.btn-text .arrow{transition:transform .2s var(--ease)}
.btn-text:hover .arrow{transform:translateX(4px)}
.btn:focus-visible,.btn-text: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;border-radius:var(--r-btn);
}

/* ============ 徽章与标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;background:var(--brand-soft);
  color:var(--brand);font-size:12px;font-weight:700;letter-spacing:.02em;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px rgba(31,209,182,.9)}
.tag-group{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tag-group span{
  font-size:12px;padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-3);
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(8,19,26,.78);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,15,20,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom-color:var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:78px}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 38px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);border:1px solid var(--line-strong);color:var(--brand);
}
.logo-mark svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-size:15px;color:var(--text-1);letter-spacing:.02em}
.logo-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;padding:9px 14px;border-radius:8px;font-size:15px;color:var(--text-2);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-links a:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.nav-links a.active{color:var(--brand)}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(31,209,182,.85);
}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-cta .btn-primary{padding:11px 20px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;background:rgba(255,255,255,.04);
  border:1px solid var(--line);cursor:pointer;padding:0;position:relative;
}
.nav-toggle span{
  position:absolute;left:12px;width:20px;height:2px;border-radius:2px;background:var(--text-1);
  transition:transform .22s var(--ease),opacity .18s var(--ease),top .22s var(--ease);
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle.is-open span:nth-child(1){top:21px;transform:rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){top:21px;transform:rotate(-45deg)}
.mobile-drawer{display:none}

/* ============ 页头 ============ */
.page-head{
  position:relative;
  padding:44px 0 88px;
  background:
    linear-gradient(180deg,rgba(8,19,26,.86) 0%,rgba(8,19,26,.94) 60%,var(--bg-base) 100%),
    url("/assets/images/backpic/back-2.png") center right / cover no-repeat;
  border-bottom:1px solid var(--line);
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  opacity:.5;
}
.breadcrumb{position:relative;z-index:1;font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.18)}
.breadcrumb .current{color:var(--text-2)}
.head-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:52px;align-items:start;margin-top:22px}
.head-main h1{font-size:40px;font-weight:800;margin-top:18px}
.head-main h1 .thin{display:block;font-size:22px;font-weight:600;color:var(--text-2);margin-top:12px;letter-spacing:0}
.head-sub{margin-top:16px;font-size:16px;color:var(--text-2);max-width:600px}
.head-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.head-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;font-size:13px;color:var(--text-3)}
.head-points span{display:inline-flex;align-items:center;gap:8px}
.head-points i{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px rgba(31,209,182,.8);display:inline-block}

/* 玻璃浮卡（全页唯一玻璃效果） */
.glass-float{
  border-radius:var(--r-lg);
  padding:24px;
  background:linear-gradient(160deg,rgba(31,209,182,.11),rgba(14,31,40,.72) 55%,rgba(10,24,31,.82));
  border:1px solid var(--line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:0 24px 60px rgba(0,0,0,.45);
}
.glass-top{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-3);letter-spacing:.06em}
.glass-top .pulse{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 10px rgba(59,217,138,.8)}
.float-row{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.08)}
.float-row strong{font-size:22px;color:var(--brand);font-variant-numeric:tabular-nums;font-weight:800;letter-spacing:.01em}
.float-row span{font-size:13px;color:var(--text-3)}
.glass-float img{margin-top:18px;width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;border:1px solid var(--line);box-shadow:0 12px 28px rgba(0,0,0,.4)}
.glass-note{margin-top:14px;font-size:12px;color:var(--text-3);line-height:1.7}

/* ============ 主体布局：左吸顶目录 + 右清单流 ============ */
.layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:48px;align-items:start}
.toc{position:sticky;top:104px}
.toc-card{
  background:var(--bg-raise);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-card);
}
.toc-card h2{font-size:14px;letter-spacing:.08em;color:var(--text-3);font-weight:700}
.toc-list{margin-top:14px;display:flex;flex-direction:column;gap:4px}
.toc-list a{
  display:flex;gap:10px;align-items:baseline;
  padding:9px 10px;border-radius:8px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;transition:all .18s var(--ease);
}
.toc-list a em{font-style:normal;font-size:12px;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:.06em}
.toc-list a:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.toc-list a.active{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);font-weight:700}
.toc-help{
  margin-top:20px;padding-top:18px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);line-height:1.75;
}
.toc-help .btn{margin-top:14px;width:100%;padding:11px 16px;font-size:14px}

/* 时间轴步骤卡 */
.timeline{display:flex;flex-direction:column;gap:18px}
.step{display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px}
.step-rail{position:relative;display:flex;justify-content:center}
.step-rail::before{content:"";position:absolute;top:6px;bottom:-24px;width:1px;background:linear-gradient(180deg,var(--line-strong),rgba(255,255,255,.06))}
.step:last-child .step-rail::before{display:none}
.node{
  position:relative;z-index:1;margin-top:26px;width:12px;height:12px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 4px rgba(31,209,182,.14),0 0 14px rgba(31,209,182,.7);
}
.step-card{
  position:relative;background:var(--bg-raise);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px 26px;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.step-card::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:0 3px 3px 0;background:var(--brand);transition:background .2s var(--ease)}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.step-num{font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--accent);font-variant-numeric:tabular-nums}
.step-card h3{font-size:19px;margin-top:8px;font-weight:700}
.step-card p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.85}

/* ============ 对照清单 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:8px}
.compare-card{
  background:var(--bg-raise);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.compare-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px}
.compare-card.yes::before{background:var(--brand)}
.compare-card.no::before{background:var(--accent)}
.compare-card h3{font-size:17px;display:flex;align-items:center;gap:10px}
.compare-card h3 .mark{width:22px;height:22px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:800}
.compare-card.yes .mark{background:var(--brand-soft);color:var(--brand)}
.compare-card.no .mark{background:var(--accent-soft);color:var(--accent)}
.compare-card ul{margin-top:16px;display:flex;flex-direction:column;gap:12px}
.compare-card li{position:relative;padding-left:20px;font-size:15px;color:var(--text-2)}
.compare-card li::before{content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;border-radius:2px;background:var(--brand)}
.compare-card.no li::before{background:var(--accent)}

/* ============ 数据条 ============ */
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.stat{
  background:var(--bg-raise);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:22px 20px;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.stat:nth-child(even){transform:translateY(20px)}
.stat:hover{border-color:var(--line-strong)}
.stat strong{display:block;font-size:34px;line-height:1.1;color:var(--brand);font-weight:800;font-variant-numeric:tabular-nums}
.stat strong em{font-style:normal;font-size:15px;color:var(--accent);margin-left:4px;font-weight:700}
.stat span{display:block;margin-top:8px;font-size:13px;color:var(--text-3)}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  background:var(--bg-raise);border:1px solid var(--line);border-radius:var(--r-sm);
  overflow:hidden;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:none;border:0;cursor:pointer;text-align:left;
  color:var(--text-1);font-size:17px;font-weight:700;line-height:1.5;
}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line-strong);color:var(--brand);position:relative;
  transition:transform .22s var(--ease),background .2s var(--ease);
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px}
.faq-icon::before{left:5px;right:5px;top:10px;height:1.5px}
.faq-icon::after{top:5px;bottom:5px;left:10px;width:1.5px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand-soft)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{padding:0 20px 20px;border-left:2px solid var(--accent);margin-left:20px;padding-left:16px;font-size:15px;color:var(--text-2)}
.faq-item.is-open{border-color:var(--line-strong)}

/* ============ 表单 ============ */
.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) 520px;gap:52px;align-items:start}
.contact-aside h2{font-size:30px;font-weight:700}
.contact-aside p{margin-top:16px;font-size:15.5px;color:var(--text-2);max-width:440px}
.trust-list{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.trust-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2)}
.trust-list li i{
  flex:0 0 18px;width:18px;height:18px;border-radius:50%;margin-top:5px;
  background:var(--brand-soft);border:1px solid var(--line-strong);color:var(--brand);
  font-size:11px;display:inline-flex;align-items:center;justify-content:center;font-style:normal;
}
.form-panel{
  background:var(--bg-raise);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-card);
}
.form-panel h3{font-size:18px;margin-bottom:6px}
.form-panel .form-lead{font-size:13px;color:var(--text-3);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px}
.field label .req{color:var(--accent);margin-left:4px}
.field input[type="text"],.field input[type="tel"],.field textarea,.field select{
  width:100%;background:#0C1A21;border:1px solid var(--line);border-radius:var(--r-sm);
  color:var(--text-1);font-size:15px;padding:12px 14px;line-height:1.6;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  font-family:inherit;
}
.field textarea{resize:vertical;min-height:96px}
.field input::placeholder,.field textarea::placeholder{color:#4F6672}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,209,182,.18);background:#0B1D25;
}
.chip-group{display:flex;flex-wrap:wrap;gap:10px}
.chip{position:relative}
.chip input{position:absolute;opacity:0;width:0;height:0}
.chip span{
  display:inline-block;padding:9px 16px;border-radius:999px;font-size:13.5px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--text-2);
  cursor:pointer;transition:all .18s var(--ease);
}
.chip span:hover{border-color:var(--line-strong);color:var(--text-1)}
.chip input:checked + span{background:var(--brand-soft);border-color:var(--brand);color:var(--brand);font-weight:700}
.chip input:focus-visible + span{outline:2px solid var(--brand);outline-offset:2px}
.check-row{display:flex;align-items:flex-start;gap:10px;margin-top:6px}
.check-row input[type="checkbox"]{
  width:18px;height:18px;margin-top:4px;accent-color:var(--brand);flex:0 0 18px;cursor:pointer;
}
.check-row label{font-size:13px;color:var(--text-3);line-height:1.7;cursor:pointer}
.check-row label a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.form-panel .btn-primary{width:100%;margin-top:18px}
.form-tip{font-size:13px;color:var(--text-3);margin-top:12px;line-height:1.7}
.form-status{margin-top:12px;font-size:14px;color:var(--success);display:none}
.form-status.is-on{display:block}
.privacy-bar{
  margin-top:44px;padding:18px 22px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.03);border:1px dashed var(--line);
  font-size:13px;color:var(--text-3);line-height:1.8;
}
.privacy-bar a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:13.5px;color:var(--text-3);line-height:1.9;max-width:320px}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--text-3);transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-contact li{font-size:13.5px;color:var(--text-3)}
.footer-contact strong{color:var(--text-1);font-weight:700}
.qr-slot{
  margin-top:18px;width:104px;height:104px;border-radius:12px;
  border:1px dashed var(--line-strong);background:rgba(31,209,182,.04);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:var(--text-3);line-height:1.6;padding:8px;
}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:18px;align-items:center}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand)}

/* ============ 弹层表单 ============ */
.modal{
  position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:24px;
}
.modal.is-open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(4,10,14,.72);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.modal-panel{
  position:relative;width:520px;max-width:100%;max-height:88vh;overflow:auto;
  border-radius:var(--r-lg);padding:28px;
  background:linear-gradient(160deg,rgba(31,209,182,.1),rgba(14,31,40,.94) 50%,rgba(8,19,26,.98));
  border:1px solid var(--line);box-shadow:0 30px 70px rgba(0,0,0,.6);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.modal-panel h3{font-size:19px}
.modal-panel .form-lead{font-size:13px;color:var(--text-3);margin:8px 0 18px}
.modal-close{
  position:absolute;top:14px;right:14px;width:40px;height:40px;border-radius:50%;
  background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--text-2);
  font-size:20px;line-height:1;cursor:pointer;transition:all .18s var(--ease);
}
.modal-close:hover{background:rgba(255,255,255,.12);color:var(--text-1)}
.modal-panel .btn-primary{width:100%;margin-top:16px}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 20px}
  .head-grid{gap:36px;grid-template-columns:minmax(0,1fr) 340px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-cta .btn-primary{display:none}
  .mobile-drawer{
    display:none;position:fixed;left:0;right:0;top:78px;bottom:0;z-index:70;
    background:rgba(5,13,18,.97);backdrop-filter:blur(14px);
    padding:28px 24px 40px;flex-direction:column;gap:18px;overflow-y:auto;
  }
  .mobile-drawer.is-open{display:flex}
  .drawer-link{
    display:flex;justify-content:space-between;align-items:center;
    padding:16px 18px;border-radius:12px;border:1px solid var(--line);
    background:rgba(255,255,255,.03);font-size:16px;color:var(--text-1);
  }
  .drawer-link.active{color:var(--brand);border-color:var(--line-strong);background:var(--brand-soft)}
  .mobile-drawer .btn-primary{width:100%;margin-top:6px}
  .drawer-note{font-size:13px;color:var(--text-3);line-height:1.8;margin-top:4px}
  .head-grid{grid-template-columns:1fr;gap:32px}
  .glass-float{max-width:520px}
  .layout{grid-template-columns:1fr;gap:32px}
  .toc{position:static}
  .toc-card{display:block}
  .compare{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat:nth-child(even){transform:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:15px}
  .section{padding:60px 0}
  .container{padding:0 18px}
  .nav-wrap{height:70px}
  .mobile-drawer{top:70px}
  .page-head{padding:32px 0 60px}
  .head-main h1{font-size:28px;margin-top:14px}
  .head-main h1 .thin{font-size:17px}
  .head-sub{font-size:15px}
  .head-actions{flex-direction:column;align-items:stretch}
  .head-actions .btn{width:100%;min-height:48px}
  .glass-float{max-width:100%;padding:20px}
  .glass-float img{aspect-ratio:16/10;height:180px}
  .section-head h2{font-size:22px}
  .section-head p{font-size:15px}
  .step{grid-template-columns:28px minmax(0,1fr);gap:12px}
  .step-card{padding:20px}
  .step-card h3{font-size:17px}
  .step-card p{font-size:14.5px}
  .compare-card{padding:20px}
  .stat-strip{gap:16px}
  .stat strong{font-size:26px}
  .faq-q{font-size:16px;padding:16px}
  .faq-a-inner{padding-left:12px;margin-left:14px;font-size:14.5px}
  .form-panel{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .modal{padding:0;align-items:flex-end}
  .modal-panel{width:100%;max-height:92vh;border-radius:20px 20px 0 0;padding:24px 20px 28px}
  .privacy-bar{margin-top:28px;padding:16px}
}
@media (max-width:519px){
  .head-main h1{font-size:25px}
  .stat-strip{grid-template-columns:1fr}
  .toc-list a{font-size:13.5px}
  .btn{padding:13px 20px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}