/* roulang page: index */
:root{
  --bg-0:#050B14;
  --bg-1:#0A1522;
  --bg-2:#0E1B2A;
  --brand:#19D3A2;
  --brand-2:#FF7A2F;
  --blue:#5B8CFF;
  --ink-0:#F2F7FA;
  --ink-1:#A9BAC8;
  --ink-2:#6E8296;
  --line:rgba(148,180,200,.16);
  --line-strong:rgba(148,180,200,.3);
  --grid:rgba(91,140,255,.07);
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.12);
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:10px;
  --pill:999px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.5);
  --shadow-3:0 32px 80px rgba(0,0,0,.6);
  --ease:180ms ease;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--ink-0);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Segoe UI",Inter,Manrope,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3{letter-spacing:-.02em;line-height:1.3;}
.num,.stat-num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
::selection{background:rgba(25,211,162,.28);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

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

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,11,20,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background var(--ease),box-shadow var(--ease);
}
.site-header.scrolled{background:var(--bg-1);box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;gap:22px;height:72px;transition:height var(--ease);}
.site-header.scrolled .header-inner{height:60px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:6px 4px;border-radius:var(--radius-sm);}
.logo-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand) 0%,#0d8f70 100%);
  box-shadow:0 0 0 1px rgba(25,211,162,.45),0 6px 18px rgba(25,211,162,.25);
  position:relative;
}
.logo-mark::after{content:"";position:absolute;inset:7px;border-radius:3px;background:var(--bg-0);}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--ink-0);white-space:nowrap;}
.logo-sub{display:block;font-size:11px;font-weight:500;color:var(--ink-2);letter-spacing:.22em;line-height:1.2;}
.main-nav{display:flex;align-items:center;gap:4px;flex:1 1 auto;}
.nav-link{
  padding:9px 15px;border-radius:var(--pill);font-size:14.5px;color:var(--ink-1);
  transition:color var(--ease),background var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--ink-0);background:rgba(255,255,255,.05);}
.nav-link.active{color:var(--brand);background:rgba(25,211,162,.1);box-shadow:inset 0 0 0 1px rgba(25,211,162,.28);}
.nav-mobile-cta{display:none;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  width:264px;padding:8px 12px;border-radius:var(--pill);
  background:var(--glass);border:1px solid var(--glass-line);
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.cmd-search:focus-within,.cmd-search.open{
  border-color:rgba(25,211,162,.6);
  box-shadow:0 0 0 3px rgba(25,211,162,.14),0 10px 30px rgba(25,211,162,.14);
  background:rgba(255,255,255,.08);
}
.cmd-search svg{width:15px;height:15px;stroke:var(--ink-2);fill:none;stroke-width:1.8;flex:0 0 auto;}
.cmd-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;font-size:14px;color:var(--ink-0);outline:none;
}
.cmd-search input::placeholder{color:var(--ink-2);}
.kbd{
  font-size:11px;color:var(--ink-2);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;line-height:1.6;flex:0 0 auto;
}
.search-suggest{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-3);padding:8px;display:none;z-index:90;
}
.cmd-search.open .search-suggest{display:block;}
.search-suggest a{display:block;padding:9px 12px;border-radius:var(--radius-sm);font-size:14px;color:var(--ink-1);transition:background var(--ease),color var(--ease);}
.search-suggest a:hover{background:rgba(25,211,162,.1);color:var(--ink-0);}
.suggest-empty{padding:10px 12px;font-size:13px;color:var(--ink-2);}
.quick-link{font-size:14px;color:var(--ink-1);padding:6px 4px;transition:color var(--ease);}
.quick-link:hover{color:var(--brand);}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  align-items:center;justify-content:center;flex:0 0 auto;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink-0);position:relative;border-radius:2px;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-0);border-radius:2px;
  transition:transform var(--ease),top var(--ease);
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(3,7,13,.66);backdrop-filter:blur(3px);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:70;
}
.nav-backdrop.show{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--pill);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
  text-align:center;
}
.btn-primary{background:var(--brand);color:#04140F;box-shadow:0 6px 18px rgba(25,211,162,.18);}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(25,211,162,.5),0 10px 30px rgba(25,211,162,.28);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(25,211,162,.35),0 4px 12px rgba(25,211,162,.16);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-0);}
.btn-ghost:hover{border-color:rgba(25,211,162,.6);background:rgba(25,211,162,.08);transform:translateY(-1px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none;}
.btn-block{width:100%;}

/* ---------- 通用板块 ---------- */
.section{padding:104px 0;border-top:1px solid var(--line);position:relative;}
.section-grid-bg::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:32px 32px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 70%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 70%);
}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(24px,3vw,36px);font-weight:700;}
.section-head p{color:var(--ink-1);font-size:16px;max-width:660px;margin-top:10px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.16em;
  color:var(--brand);text-transform:uppercase;padding:6px 14px;border-radius:var(--pill);
  background:rgba(25,211,162,.08);border:1px solid rgba(25,211,162,.22);margin-bottom:20px;
}
.link-arrow{color:var(--brand);font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:gap var(--ease);}
.link-arrow:hover{gap:11px;}
.tag{
  display:inline-flex;align-items:center;font-size:12.5px;padding:3px 11px;border-radius:var(--pill);
  color:var(--brand);background:rgba(25,211,162,.1);border:1px solid rgba(25,211,162,.22);
}
.tag-orange{color:var(--brand-2);background:rgba(255,122,47,.1);border-color:rgba(255,122,47,.26);}
.tag-muted{color:var(--ink-2);background:rgba(255,255,255,.04);border-color:var(--line);}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:88px 0 96px;overflow:hidden;
  background-image:linear-gradient(90deg,rgba(5,11,20,.96) 0%,rgba(5,11,20,.82) 45%,rgba(5,11,20,.6) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:32px 32px;
}
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none;}
.hero-glow.g1{width:420px;height:420px;right:-80px;top:-120px;background:rgba(25,211,162,.16);}
.hero-glow.g2{width:340px;height:340px;right:220px;bottom:-140px;background:rgba(255,122,47,.11);}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center;}
.hero h1{font-size:clamp(30px,4.4vw,54px);font-weight:700;letter-spacing:-.02em;line-height:1.22;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{font-size:17.5px;color:var(--ink-1);margin-top:22px;max-width:620px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.glass-bar{
  margin-top:38px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--radius-lg);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-1);overflow:hidden;
}
.glass-item{padding:16px 14px;text-align:center;}
.glass-item + .glass-item{border-left:1px solid var(--line);}
.glass-item strong{display:block;font-size:20px;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.glass-item span{display:block;font-size:12.5px;color:var(--ink-2);margin-top:2px;}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);
  border:1px solid var(--glass-line);box-shadow:var(--shadow-2);
}
.hero-figure figcaption{
  margin-top:14px;font-size:13px;color:var(--ink-2);
  display:flex;align-items:center;gap:8px;
}
.hero-figure figcaption::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);flex:0 0 auto;}

/* ---------- 痛点区 ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.pain-card{
  position:relative;padding:26px 26px 24px;border-radius:var(--radius-lg);
  background:var(--bg-1);border:1px solid var(--line);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.pain-card:nth-child(even){transform:translateY(18px);}
.pain-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-1);}
.pain-num{
  display:inline-block;font-size:12px;letter-spacing:.12em;color:var(--ink-2);
  border:1px solid var(--line);border-radius:var(--pill);padding:2px 10px;margin-bottom:14px;
}
.pain-card h3{font-size:18px;font-weight:600;display:flex;align-items:center;gap:9px;}
.pain-card h3::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand-2);flex:0 0 auto;box-shadow:0 0 0 4px rgba(255,122,47,.14);}
.pain-card p{margin-top:12px;font-size:14.5px;color:var(--ink-1);}

/* ---------- 方案区 ---------- */
.solution-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:22px;}
.solution-main{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.solution-main:hover{border-color:rgba(25,211,162,.4);box-shadow:var(--shadow-2);transform:translateY(-3px);}
.solution-main img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.solution-body{padding:26px 28px 28px;}
.solution-body h3{font-size:22px;font-weight:700;margin-bottom:12px;}
.solution-body p{font-size:15px;color:var(--ink-1);}
.point-list{margin-top:18px;display:grid;gap:10px;}
.point-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--ink-1);}
.point-list li::before{
  content:"";position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:2px;
  background:rgba(25,211,162,.85);
}
.solution-side{display:grid;gap:22px;align-content:start;}
.mini-card{
  position:relative;padding:24px 26px;border-radius:var(--radius);background:var(--bg-2);
  border:1px solid var(--line);transition:border-color var(--ease),box-shadow var(--ease);
}
.mini-card:hover{border-color:rgba(25,211,162,.45);box-shadow:var(--shadow-1);}
.mini-card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.mini-card p{font-size:14.5px;color:var(--ink-1);}
.mini-card .link-arrow{margin-top:16px;}
.mini-card::after{
  content:"→";position:absolute;right:24px;bottom:20px;color:var(--brand);opacity:0;
  transform:translateX(-8px);transition:opacity var(--ease),transform var(--ease);font-size:16px;
}
.mini-card:hover::after{opacity:1;transform:translateX(0);}

/* ---------- 数据区 ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:linear-gradient(90deg,rgba(25,211,162,.28),rgba(91,140,255,.14),rgba(255,122,47,.22));
  border-radius:var(--radius-lg);overflow:hidden;padding:1px;
}
.stat-cell{background:var(--bg-1);padding:34px 24px;text-align:center;}
.stat-num{font-size:clamp(28px,3.6vw,42px);font-weight:700;color:var(--ink-0);line-height:1.15;}
.stat-num span{font-size:16px;color:var(--brand);margin-left:4px;}
.stat-cell p{margin-top:8px;font-size:14px;color:var(--ink-2);}
.stat-note{margin-top:22px;font-size:13.5px;color:var(--ink-2);text-align:center;}

/* ---------- 场景分区 ---------- */
.scene-scroll{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.scene-card{
  border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);background:var(--bg-1);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.scene-card:hover{border-color:rgba(25,211,162,.4);transform:translateY(-3px);box-shadow:var(--shadow-2);}
.scene-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.scene-card:hover img{transform:scale(1.03);}
.scene-card .scene-body{padding:20px 22px 24px;}
.scene-card h3{font-size:17.5px;font-weight:600;margin-bottom:8px;}
.scene-card p{font-size:14px;color:var(--ink-1);}
.scene-card .tag{margin-bottom:12px;}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{
  display:flex;flex-direction:column;background:var(--bg-1);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.news-card:hover{border-color:rgba(25,211,162,.4);transform:translateY(-3px);box-shadow:var(--shadow-2);}
.news-thumb{display:block;overflow:hidden;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px;}
.news-body h3{font-size:17px;font-weight:600;line-height:1.5;}
.news-body h3 a{transition:color var(--ease);}
.news-body h3 a:hover{color:var(--brand);}
.news-body p{
  margin-top:10px;font-size:14px;color:var(--ink-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{margin-top:auto;padding-top:16px;font-size:12.5px;color:var(--ink-2);display:flex;justify-content:space-between;align-items:center;gap:10px;}
.empty-state{
  grid-column:1 / -1;text-align:center;padding:64px 24px;border:1px dashed var(--line);
  border-radius:var(--radius-lg);background:var(--bg-1);
}
.empty-state .empty-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:16px;
  border:1px solid rgba(25,211,162,.3);background:rgba(25,211,162,.08);position:relative;
}
.empty-state .empty-icon::after{content:"";position:absolute;inset:16px;border-radius:4px;background:rgba(25,211,162,.35);}
.empty-state p{color:var(--ink-1);font-size:15px;}
.empty-state a{display:inline-block;margin-top:14px;color:var(--brand);font-size:14px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 40px 22px 0;position:relative;
  font-size:17px;font-weight:600;color:var(--ink-0);transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary::after{
  content:"";position:absolute;right:8px;top:31px;width:9px;height:9px;
  border-right:2px solid var(--ink-1);border-bottom:2px solid var(--ink-1);
  transform:rotate(45deg);transition:transform var(--ease),border-color var(--ease);
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--brand);}
.faq-item p{padding:0 40px 24px 0;color:var(--ink-1);font-size:15px;}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:44px 46px;border-radius:var(--radius-lg);
  background:linear-gradient(120deg,rgba(25,211,162,.1),rgba(91,140,255,.06) 55%,rgba(255,122,47,.08));
  border:1px solid var(--glass-line);box-shadow:var(--shadow-1);
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;}
.cta-band p{margin-top:10px;color:var(--ink-1);font-size:15.5px;max-width:600px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.privacy-note{margin-top:20px;font-size:13px;color:var(--ink-2);}
.privacy-note a{color:var(--blue);text-decoration:underline;text-underline-offset:3px;}

/* ---------- 弹层表单 ---------- */
.modal{
  position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:24px;
}
.modal.show{display:flex;}
.modal-mask{position:absolute;inset:0;background:rgba(3,7,13,.72);backdrop-filter:blur(4px);}
.modal-panel{
  position:relative;z-index:2;width:100%;max-width:560px;max-height:90vh;overflow-y:auto;
  background:var(--bg-1);border:1px solid var(--glass-line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-3);padding:34px 34px 30px;
}
.modal-panel h3{font-size:21px;font-weight:700;}
.modal-panel .modal-sub{margin-top:8px;font-size:14px;color:var(--ink-1);}
.modal-close{
  position:absolute;right:16px;top:16px;width:36px;height:36px;border-radius:12px;
  border:1px solid var(--line);color:var(--ink-1);display:flex;align-items:center;justify-content:center;
  transition:color var(--ease),border-color var(--ease);
}
.modal-close:hover{color:var(--brand);border-color:rgba(25,211,162,.5);}
.form-grid{display:grid;gap:16px;margin-top:24px;}
.field label{display:block;font-size:13.5px;color:var(--ink-1);margin-bottom:7px;}
.field .req{color:var(--brand-2);margin-left:3px;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--radius);background:var(--bg-2);
  border:1px solid var(--line);font-size:14.5px;outline:none;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{min-height:104px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(25,211,162,.7);box-shadow:0 0 0 3px rgba(25,211,162,.14);
}
.field.error input,.field.error select,.field.error textarea{border-color:var(--brand-2);}
.field .err-msg{display:none;margin-top:6px;font-size:12.5px;color:var(--brand-2);}
.field.error .err-msg{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-2);}
.check-row input{width:16px;height:16px;margin-top:5px;flex:0 0 auto;accent-color:var(--brand);}
.check-row a{color:var(--blue);text-decoration:underline;text-underline-offset:3px;}
.spinner{
  width:14px;height:14px;border-radius:50%;border:2px solid rgba(4,20,15,.3);
  border-top-color:#04140F;animation:spin .7s linear infinite;display:none;
}
.btn.loading .spinner{display:inline-block;}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg-1);padding:72px 0 34px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand p{font-size:14px;color:var(--ink-1);max-width:320px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--ink-0);margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14px;color:var(--ink-1);transition:color var(--ease);}
.footer-col a:hover{color:var(--brand);}
.footer-col p{font-size:14px;color:var(--ink-1);}
.footer-contact li{font-size:14px;color:var(--ink-1);}
.footer-contact strong{color:var(--ink-0);font-weight:600;}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-2);
}
.footer-bottom a{color:var(--ink-2);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-figure{max-width:640px;}
  .solution-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:920px){
  .container{padding:0 24px;}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
    background:var(--bg-1);border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding:92px 20px 28px;gap:6px;transform:translateX(102%);
    transition:transform .3s ease;z-index:75;box-shadow:var(--shadow-3);
  }
  .main-nav.open{transform:translateX(0);}
  .nav-link{padding:13px 16px;border-radius:var(--radius);font-size:15px;}
  .nav-mobile-cta{
    display:flex;margin-top:auto;justify-content:center;
    padding:13px 20px;border-radius:var(--pill);background:var(--brand);color:#04140F;font-weight:600;
  }
  .menu-toggle{display:flex;}
  .cmd-search{width:auto;padding:9px 11px;}
  .cmd-search input{display:none;}
  .kbd{display:none;}
  .cmd-search.expanded{position:absolute;left:18px;right:18px;top:14px;width:auto;z-index:85;}
  .cmd-search.expanded input{display:block;}
  .quick-link{display:none;}
  .section{padding:72px 0;}
  .hero{padding:64px 0 72px;}
  .pain-grid{grid-template-columns:1fr;}
  .pain-card:nth-child(even){transform:none;}
  .scene-scroll,.news-grid{grid-template-columns:1fr 1fr;}
  .stat-band{grid-template-columns:1fr 1fr;}
  .cta-band{padding:32px 28px;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .hero h1{font-size:clamp(26px,7.4vw,34px);}
  .hero-sub{font-size:16px;}
  .hero-cta .btn{width:100%;}
  .glass-bar{grid-template-columns:1fr 1fr;}
  .glass-item:nth-child(3){border-left:0;}
  .glass-item:nth-child(3),.glass-item:nth-child(4){border-top:1px solid var(--line);}
  .scene-scroll,.news-grid,.stat-band{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .section-head{margin-bottom:30px;}
  .modal-panel{padding:26px 20px 24px;}
  .faq-item summary{padding-right:34px;font-size:16px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .news-card:hover,.scene-card:hover,.solution-main:hover{transform:none;}
}

/* roulang page: article */
:root{
  --bg-0:#050B14;
  --bg-1:#0A1522;
  --bg-2:#0E1B2A;
  --brand:#19D3A2;
  --brand-2:#FF7A2F;
  --brand-3:#5B8CFF;
  --ink-0:#F2F7FA;
  --ink-1:#A9BAC8;
  --ink-2:#6E8296;
  --line:rgba(148,180,200,.16);
  --line-strong:rgba(148,180,200,.30);
  --grid:rgba(91,140,255,.07);
  --glass:rgba(255,255,255,.06);
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --pill:999px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.50);
  --shadow-3:0 32px 80px rgba(0,0,0,.60);
  --container:1240px;
  --gap:24px;
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--ink-0);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,Manrope,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),opacity var(--ease);}
a:hover{color:var(--brand);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(25,211,162,.28);}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.tabular{font-variant-numeric:tabular-nums;}
/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(5,11,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{
  background:var(--bg-1);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:72px;
  transition:min-height var(--ease);
}
.site-header.is-scrolled .header-inner{min-height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(140deg,var(--brand) 0%,#0f8f74 60%,#0a6a58 100%);
  box-shadow:0 0 0 1px rgba(25,211,162,.45),0 6px 18px rgba(25,211,162,.28);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:8px 7px;
  border-radius:2px;
  border:2px solid rgba(4,20,15,.85);
  border-top-width:0;border-right-width:0;
  transform:skewX(-12deg);
}
.logo-text{
  display:flex;align-items:baseline;gap:6px;
  font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--ink-0);
  white-space:nowrap;
}
.logo-sub{font-size:11px;font-weight:500;color:var(--ink-2);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--ink-1);
  border-radius:var(--pill);
  white-space:nowrap;
  transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--ink-0);background:rgba(255,255,255,.05);}
.nav-link.active{color:var(--ink-0);background:rgba(25,211,162,.10);}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-mobile-cta{display:none;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.cmd-search{
  position:relative;
  display:flex;align-items:center;gap:8px;
  width:258px;
  padding:8px 10px 8px 12px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--pill);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.cmd-search:focus-within{
  border-color:rgba(25,211,162,.55);
  box-shadow:0 0 0 4px rgba(25,211,162,.14),inset 0 1px 0 rgba(255,255,255,.10);
}
.cmd-search svg{width:15px;height:15px;flex-shrink:0;stroke:var(--ink-2);fill:none;stroke-width:1.8;stroke-linecap:round;}
.cmd-search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:13.5px;color:var(--ink-0);padding:2px 0;
}
.cmd-search input::placeholder{color:var(--ink-2);}
.kbd{
  flex-shrink:0;
  font-size:11px;color:var(--ink-2);
  border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;line-height:1.5;
}
.search-suggest{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  background:var(--bg-2);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-3);
  padding:8px;
  display:none;
  z-index:70;
}
.search-suggest.is-open{display:block;}
.search-suggest a{
  display:block;padding:9px 12px;border-radius:var(--radius-sm);
  font-size:13.5px;color:var(--ink-1);
}
.search-suggest a:hover{background:rgba(25,211,162,.10);color:var(--ink-0);}
.suggest-empty{padding:12px;font-size:13px;color:var(--ink-2);}
.quick-link{font-size:14px;color:var(--ink-1);white-space:nowrap;}
.quick-link:hover{color:var(--brand);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--pill);
  font-size:14.5px;font-weight:600;
  padding:11px 22px;
  border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#04140F;}
.btn-primary:hover{
  color:#04140F;
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(25,211,162,.5),0 10px 30px rgba(25,211,162,.28);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(25,211,162,.35),0 4px 14px rgba(25,211,162,.18);}
.btn-ghost{
  background:transparent;border-color:var(--line-strong);color:var(--ink-0);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(25,211,162,.08);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;box-shadow:none;transform:none;}
.btn-sm{padding:9px 18px;font-size:13.5px;}
.btn-block{width:100%;}
.menu-toggle{
  display:none;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  position:relative;
}
.menu-toggle span,
.menu-toggle span::before,
.menu-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;background:var(--ink-0);border-radius:2px;content:"";
  transition:transform var(--ease),opacity var(--ease),top var(--ease);
}
.menu-toggle span{top:50%;margin-top:-1px;}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.menu-toggle[aria-expanded="true"] span{background:transparent;}
.menu-toggle[aria-expanded="true"] span::before{top:0;transform:translateX(-50%) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span::after{top:0;transform:translateX(-50%) rotate(-45deg);}
/* ============ 文章头部 ============ */
.article-hero{
  position:relative;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(180deg,rgba(5,11,20,.78) 0%,rgba(5,11,20,.92) 62%,var(--bg-0) 100%),
    url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:32px 32px;
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:2;padding-top:44px;padding-bottom:52px;}
.glow{position:absolute;border-radius:50%;filter:blur(70px);pointer-events:none;z-index:1;}
.glow-a{width:340px;height:340px;top:-140px;right:-60px;background:rgba(25,211,162,.18);}
.glow-b{width:260px;height:260px;bottom:-150px;left:-70px;background:rgba(255,122,47,.14);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:rgba(148,180,200,.45);}
.breadcrumb .current{color:var(--ink-1);}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;
  padding:5px 12px;border-radius:var(--pill);
  border:1px solid rgba(25,211,162,.35);
  background:rgba(25,211,162,.10);
  color:var(--brand);
  white-space:nowrap;
}
.badge-muted{
  border-color:var(--line);background:rgba(255,255,255,.04);color:var(--ink-1);font-weight:500;
}
.article-hero h1{
  margin-top:18px;
  font-size:clamp(30px,4.4vw,54px);
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.28;
  max-width:940px;
}
.hero-sub{
  margin-top:16px;
  max-width:760px;
  font-size:17px;
  color:var(--ink-1);
}
/* ============ 文章主体 ============ */
.article-main{padding:64px 0 96px;background:var(--bg-0);}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;
  align-items:start;
}
.article-content{max-width:780px;min-width:0;}
.article-content > p:first-of-type{font-size:17.5px;color:var(--ink-1);}
/* CMS 正文排版 */
.article-body h2{
  margin:44px 0 16px;
  font-size:clamp(22px,2.6vw,28px);
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.4;
  padding-left:14px;
  border-left:3px solid var(--brand);
}
.article-body h3{margin:32px 0 12px;font-size:19px;font-weight:600;line-height:1.5;}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:600;color:var(--ink-1);}
.article-body p{margin:18px 0;font-size:17px;line-height:1.9;color:var(--ink-1);}
.article-body strong{color:var(--ink-0);font-weight:600;}
.article-body a{color:var(--brand-3);border-bottom:1px solid rgba(91,140,255,.35);}
.article-body a:hover{color:var(--brand);border-bottom-color:var(--brand);}
.article-body ul,.article-body ol{margin:18px 0;padding-left:0;}
.article-body ul li,.article-body ol li{
  position:relative;
  padding-left:24px;
  margin:10px 0;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-1);
}
.article-body ul li::before{
  content:"";position:absolute;left:6px;top:13px;
  width:7px;height:7px;border-radius:2px;
  background:var(--brand);transform:rotate(45deg);
}
.article-body ol{counter-reset:ol-count;}
.article-body ol li{counter-increment:ol-count;}
.article-body ol li::before{
  content:counter(ol-count);
  position:absolute;left:0;top:3px;
  width:18px;height:18px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:700;color:#04140F;
  background:var(--brand);
}
.article-body blockquote{
  margin:26px 0;
  padding:16px 20px;
  border-left:3px solid var(--brand);
  background:var(--bg-1);
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  color:var(--ink-1);
}
.article-body blockquote p{margin:0;font-size:16.5px;}
.article-body img{
  width:100%;
  border-radius:16px;
  border:1px solid var(--line);
  margin:26px 0 10px;
}
.article-body figure{margin:26px 0;}
.article-body figcaption{
  font-size:13px;color:var(--ink-2);text-align:center;margin-top:10px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:26px 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  text-align:left;
  color:var(--ink-1);
}
.article-body th{background:var(--bg-2);color:var(--ink-0);font-weight:600;}
.article-body tr:last-child td{border-bottom:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:38px 0;}
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line);}
.tag{
  font-size:12.5px;color:var(--ink-1);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  border-radius:var(--pill);
  padding:6px 14px;
  transition:border-color var(--ease),color var(--ease);
}
.tag:hover{border-color:var(--brand);color:var(--brand);}
.empty-state{
  border:1px dashed var(--line-strong);
  border-radius:var(--radius-lg);
  background:var(--bg-1);
  padding:48px 32px;
  text-align:center;
}
.empty-state h2{font-size:22px;margin-bottom:12px;}
.empty-state p{color:var(--ink-1);margin-bottom:22px;}
/* 相关推荐 */
.related{margin-top:56px;padding-top:34px;border-top:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:20px;}
.section-head h2{font-size:22px;font-weight:700;}
.section-head .text-link{font-size:13.5px;color:var(--brand);}
.section-head .text-link:hover{color:var(--ink-0);}
.related-list{display:grid;gap:12px;}
.related-item{
  display:flex;align-items:center;gap:16px;
  padding:16px 18px;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.related-item:hover{border-color:rgba(25,211,162,.5);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.related-item .idx{
  font-size:13px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;
  flex-shrink:0;
}
.related-item .txt{min-width:0;}
.related-item .txt strong{display:block;font-size:15.5px;font-weight:600;color:var(--ink-0);}
.related-item .txt span{display:block;font-size:12.5px;color:var(--ink-2);margin-top:3px;}
.back-row{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;}
/* 侧栏 */
.article-side{position:sticky;top:96px;display:grid;gap:20px;}
.side-card{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:24px;
  box-shadow:var(--shadow-1);
}
.side-card h3{font-size:16px;font-weight:600;margin-bottom:10px;}
.side-card p{font-size:14px;color:var(--ink-1);line-height:1.8;}
.side-list{display:grid;gap:10px;margin-top:14px;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;color:var(--ink-1);
  padding:10px 12px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.02);
}
.side-list a:hover{border-color:rgba(25,211,162,.5);color:var(--brand);}
.side-list a em{font-style:normal;color:var(--brand);font-size:13px;}
.side-card .btn{margin-top:18px;}
.side-note{font-size:12.5px;color:var(--ink-2);margin-top:12px;}
/* CTA */
.cta-section{
  padding:0 0 96px;
  background:var(--bg-0);
}
.cta-box{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:40px 44px;
  border-radius:24px;
  border:1px solid rgba(25,211,162,.28);
  background:
    radial-gradient(600px 200px at 12% 0%,rgba(25,211,162,.14),transparent 70%),
    radial-gradient(500px 220px at 92% 110%,rgba(255,122,47,.12),transparent 70%),
    var(--bg-1);
  box-shadow:var(--shadow-2);
}
.cta-box h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:-.01em;}
.cta-box p{margin-top:10px;color:var(--ink-1);font-size:15.5px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0;}
/* 页脚 */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-1);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--ink-1);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--ink-0);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-1);}
.footer-col a:hover{color:var(--brand);}
.footer-contact li{font-size:14px;color:var(--ink-1);}
.footer-contact strong{color:var(--ink-0);font-weight:500;}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--ink-2);
}
.footer-bottom a{color:var(--ink-2);}
.footer-bottom a:hover{color:var(--brand);}
@media (max-width:1024px){
  .container{padding:0 24px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:38px;}
  .article-side{position:static;top:auto;grid-template-columns:repeat(2,minmax(0,1fr));display:grid;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cmd-search{width:200px;}
  .quick-link{display:none;}
}
@media (max-width:920px){
  .main-nav{
    position:fixed;
    top:0;right:0;
    width:min(320px,86vw);
    height:100vh;
    padding:88px 22px 24px;
    background:var(--bg-1);
    border-left:1px solid var(--line);
    box-shadow:var(--shadow-3);
    display:flex;flex-direction:column;align-items:stretch;gap:6px;
    transform:translateX(102%);
    transition:transform 220ms ease;
    z-index:80;
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{padding:13px 14px;font-size:16px;border-radius:12px;}
  .nav-link.active::after{display:none;}
  .nav-mobile-cta{
    display:inline-flex;align-items:center;justify-content:center;
    margin-top:auto;padding:13px 18px;border-radius:var(--pill);
    background:var(--brand);color:#04140F;font-weight:600;
  }
  .nav-mobile-cta:hover{color:#04140F;}
  .menu-toggle{display:block;}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(3,8,14,.65);
    opacity:0;visibility:hidden;transition:opacity 220ms ease,visibility 220ms ease;z-index:70;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
  .cmd-search{width:auto;padding:9px 12px;}
  .cmd-search input,.cmd-search .kbd{display:none;}
  .article-main{padding:48px 0 72px;}
  .cta-box{flex-direction:column;align-items:flex-start;padding:32px 26px;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .header-actions{gap:8px;}
  .article-hero .container{padding-top:32px;padding-bottom:38px;}
  .hero-sub{font-size:15.5px;}
  .article-side{grid-template-columns:minmax(0,1fr);}
  .article-body p,.article-body ul li,.article-body ol li{font-size:16px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .back-row .btn{width:100%;}
  .related-item{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg-0:#050B14;
  --bg-1:#0A1522;
  --bg-2:#0E1B2A;
  --brand:#19D3A2;
  --brand-2:#FF7A2F;
  --blue:#5B8CFF;
  --ink-0:#F2F7FA;
  --ink-1:#A9BAC8;
  --ink-2:#6E8296;
  --line:rgba(148,180,200,.16);
  --line-strong:rgba(148,180,200,.28);
  --grid:rgba(91,140,255,.07);
  --glass:rgba(255,255,255,.06);
  --radius-lg:20px;
  --radius-sm:14px;
  --radius-pill:999px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-2:0 16px 40px rgba(0,0,0,.5);
  --shadow-3:0 32px 80px rgba(0,0,0,.6);
  --gap:22px;
  --pad-d:32px;
  --pad-t:24px;
  --pad-m:18px;
  --sec-y:104px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-0);
  background:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 12% -6%,rgba(25,211,162,.10),transparent 62%),
    radial-gradient(760px 460px at 92% 4%,rgba(255,122,47,.08),transparent 60%),
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:16px;}
a{color:var(--blue);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.32;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 var(--pad-d);}
.section{padding:var(--sec-y) 0;border-top:1px solid var(--line);position:relative;}
.section:first-of-type{border-top:0;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--brand);margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.7;}
.sec-title{font-size:clamp(24px,3vw,36px);margin-bottom:16px;}
.sec-desc{color:var(--ink-1);font-size:17px;max-width:720px;}
.muted{color:var(--ink-2);}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;line-height:1.6;color:var(--ink-1);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.tag.is-brand{color:var(--brand);border-color:rgba(25,211,162,.34);background:rgba(25,211,162,.07);}
.tag.is-orange{color:var(--brand-2);border-color:rgba(255,122,47,.34);background:rgba(255,122,47,.07);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#04140F;box-shadow:0 8px 24px rgba(25,211,162,.22);}
.btn-primary:hover{color:#04140F;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(25,211,162,.5),0 10px 30px rgba(25,211,162,.28);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(25,211,162,.35),0 5px 16px rgba(25,211,162,.18);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--ink-0);}
.btn-ghost:hover{color:var(--ink-0);border-color:var(--brand);background:rgba(25,211,162,.08);transform:translateY(-1px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn[disabled],.btn.is-loading{opacity:.45;pointer-events:none;box-shadow:none;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,21,34,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:height .2s ease,background .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{background:var(--bg-1);box-shadow:var(--shadow-1);border-bottom-color:var(--line-strong);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.site-header.is-scrolled .header-inner{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-0);text-decoration:none;}
.logo:hover{color:var(--ink-0);}
.logo-mark{
  position:relative;width:26px;height:26px;border-radius:9px;
  background:linear-gradient(140deg,var(--brand),#0d8a70);
  box-shadow:0 0 0 1px rgba(255,255,255,.16),0 6px 18px rgba(25,211,162,.32);
  flex:0 0 auto;
}
.logo-mark::after{content:"";position:absolute;inset:8px;border-radius:50%;background:#04140F;}
.logo-text{display:inline-flex;align-items:baseline;gap:7px;font-size:17px;font-weight:700;letter-spacing:-.01em;}
.logo-sub{font-size:11px;font-weight:500;letter-spacing:.14em;color:var(--ink-2);}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  padding:9px 15px;border-radius:var(--radius-pill);
  font-size:14.5px;color:var(--ink-1);text-decoration:none;
  transition:color .18s ease,background .18s ease,box-shadow .18s ease;
}
.nav-link:hover{color:var(--ink-0);background:rgba(255,255,255,.05);}
.nav-link.active{color:var(--brand);background:rgba(25,211,162,.10);box-shadow:inset 0 0 0 1px rgba(25,211,162,.3);}
.nav-mobile-cta{display:none;}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  padding:0 10px 0 12px;height:40px;width:266px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:box-shadow .2s ease,border-color .2s ease,background .2s ease;
}
.cmd-search svg{width:16px;height:16px;fill:none;stroke:var(--ink-2);stroke-width:1.8;stroke-linecap:round;flex:0 0 auto;}
.cmd-search input{
  flex:1;min-width:0;height:100%;border:0;background:transparent;
  font-size:14px;color:var(--ink-0);outline:none;
}
.cmd-search input::placeholder{color:var(--ink-2);}
.cmd-search .kbd{
  font-size:11px;color:var(--ink-2);border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;line-height:1.6;flex:0 0 auto;
}
.cmd-search.is-focus{border-color:rgba(25,211,162,.55);background:rgba(25,211,162,.06);box-shadow:0 0 0 4px rgba(25,211,162,.12);}
.search-suggest{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  background:var(--bg-1);border:1px solid var(--line-strong);
  border-radius:var(--radius-sm);box-shadow:var(--shadow-3);
  padding:8px;display:none;z-index:70;
}
.search-suggest a{display:block;padding:9px 12px;border-radius:10px;font-size:14px;color:var(--ink-1);text-decoration:none;}
.search-suggest a:hover{background:rgba(25,211,162,.09);color:var(--brand);}
.suggest-empty{padding:10px 12px;font-size:13px;color:var(--ink-2);}
.cmd-search.is-focus .search-suggest{display:block;}
.quick-link{font-size:14px;color:var(--ink-1);text-decoration:none;padding:8px 4px;}
.quick-link:hover{color:var(--brand);}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  position:relative;
}
.menu-toggle span,
.menu-toggle span::before,
.menu-toggle span::after{
  position:absolute;left:50%;width:18px;height:1.6px;background:var(--ink-0);
  transform:translateX(-50%);border-radius:2px;transition:.2s ease;
}
.menu-toggle span{top:50%;margin-top:-.8px;}
.menu-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.menu-toggle span::after{content:"";top:6px;left:0;transform:none;}
.menu-toggle[aria-expanded="true"] span{background:transparent;}
.menu-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.menu-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}
.nav-mask{position:fixed;inset:0;background:rgba(5,11,20,.62);opacity:0;pointer-events:none;transition:opacity .22s ease;z-index:55;}
.nav-mask.is-open{opacity:1;pointer-events:auto;}

/* ---------- 内页首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:64px 0 88px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(to bottom,var(--bg-0) 4%,rgba(5,11,20,.86) 44%,var(--bg-0) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover,cover;background-position:center,center;
  opacity:.9;z-index:-1;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);margin-bottom:26px;}
.breadcrumb a{color:var(--ink-2);text-decoration:none;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{opacity:.6;}
.breadcrumb .current{color:var(--ink-1);}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;}
.page-hero h1{font-size:clamp(30px,4.2vw,50px);letter-spacing:-.02em;margin-bottom:20px;}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.lead{font-size:17.5px;color:var(--ink-1);max-width:640px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.glass-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:var(--glass);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-lg);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-1);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  overflow:hidden;
}
.glass-bar .cell{padding:18px 20px;border-left:1px solid rgba(255,255,255,.09);}
.glass-bar .cell:first-child{border-left:0;}
.glass-bar .val{font-size:23px;font-weight:700;color:var(--ink-0);line-height:1.3;}
.glass-bar .val small{font-size:12.5px;font-weight:500;color:var(--ink-2);margin-left:4px;}
.glass-bar .cap{font-size:12.5px;color:var(--ink-2);}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border:1px solid rgba(255,255,255,.14);box-shadow:var(--shadow-3);
}
.hero-figure::after{
  content:"";position:absolute;inset:auto -18px -18px auto;width:112px;height:112px;
  border-radius:24px;border:1px dashed rgba(25,211,162,.42);z-index:-1;
}
.hero-note{
  position:absolute;left:-16px;bottom:-18px;
  background:var(--bg-1);border:1px solid var(--line-strong);
  border-radius:var(--radius-sm);padding:12px 16px;box-shadow:var(--shadow-2);
  font-size:13px;color:var(--ink-1);max-width:218px;
}
.hero-note strong{display:block;color:var(--brand);font-size:14px;}

/* ---------- 场景卡（错落） ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gap);}
.scene-card{
  grid-column:span 6;
  position:relative;
  padding:30px 30px 28px;
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,0)) ,var(--bg-1);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.scene-card.offset{margin-top:26px;}
.scene-no{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:42px;height:30px;padding:0 10px;border-radius:10px;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);
  background:rgba(25,211,162,.1);border:1px solid rgba(25,211,162,.28);
  margin-bottom:16px;
}
.scene-card h3{font-size:19px;margin-bottom:12px;}
.scene-card p{color:var(--ink-1);font-size:15.5px;}
.scene-card .dot{
  position:absolute;top:34px;right:30px;width:9px;height:9px;border-radius:50%;
  background:var(--brand-2);box-shadow:0 0 0 5px rgba(255,122,47,.14);
}

/* ---------- 时间线 / 分层步骤 ---------- */
.steps-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start;}
.steps-side{position:sticky;top:104px;}
.steps-side h2{font-size:clamp(24px,3vw,34px);margin-bottom:18px;}
.steps-side p{color:var(--ink-1);font-size:16px;margin-bottom:22px;}
.side-list{border-top:1px solid var(--line);}
.side-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--ink-1);
}
.side-list li::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);
  margin-top:9px;flex:0 0 auto;box-shadow:0 0 0 4px rgba(25,211,162,.12);
}
.timeline{position:relative;display:grid;gap:0;}
.timeline::before{
  content:"";position:absolute;left:27px;top:24px;bottom:24px;
  border-left:1px dashed rgba(25,211,162,.3);
}
.step{
  position:relative;
  display:grid;grid-template-columns:56px 1fr;gap:22px;
  padding:24px 0;
}
.step + .step{border-top:1px dashed var(--line);}
.step-no{
  position:relative;z-index:1;
  width:56px;height:56px;border-radius:18px;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:var(--brand);
  background:var(--bg-2);
  border:1px solid rgba(25,211,162,.32);
  box-shadow:0 8px 20px rgba(0,0,0,.4);
}
.step-body h3{font-size:19px;margin-bottom:10px;}
.step-body p{color:var(--ink-1);font-size:15.5px;margin-bottom:12px;}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 数据输出 ---------- */
.output-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.output-card{
  padding:28px 26px;border-radius:var(--radius-lg);
  background:var(--bg-2);border:1px solid var(--line);
  transition:border-color .2s ease,transform .2s ease;
}
.output-card:hover{border-color:rgba(25,211,162,.5);transform:translateY(-3px);}
.output-card .ic{
  width:44px;height:44px;border-radius:14px;margin-bottom:18px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(91,140,255,.1);border:1px solid rgba(91,140,255,.3);
}
.output-card .ic svg{width:20px;height:20px;fill:none;stroke:var(--blue);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.output-card h3{font-size:18px;margin-bottom:10px;}
.output-card p{color:var(--ink-1);font-size:15px;margin-bottom:16px;}
.output-card ul li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-1);margin-bottom:8px;
}
.output-card ul li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;
  background:var(--brand);opacity:.85;
}

/* ---------- 指标带 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);
  padding:34px 0 0;margin-top:8px;border-top:1px solid var(--line);
}
.metric .m-val{font-size:clamp(28px,3.4vw,40px);font-weight:700;color:var(--brand);line-height:1.2;}
.metric .m-val small{font-size:14px;color:var(--ink-1);font-weight:500;margin-left:4px;}
.metric .m-cap{font-size:14px;color:var(--ink-1);margin-top:6px;}
.metric .m-sub{font-size:13px;color:var(--ink-2);}

/* ---------- 图文块 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
.split img{width:100%;aspect-ratio:16/11;object-fit:cover;border:1px solid rgba(255,255,255,.12);box-shadow:var(--shadow-2);}
.split h2{font-size:clamp(24px,3vw,34px);margin-bottom:18px;}
.split p{color:var(--ink-1);font-size:16px;margin-bottom:16px;}
.check-list li{
  position:relative;padding-left:28px;font-size:15.5px;color:var(--ink-1);margin-bottom:12px;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:7px;width:16px;height:16px;border-radius:50%;
  background:rgba(25,211,162,.14);border:1px solid rgba(25,211,162,.45);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:12px;width:6px;height:3px;
  border-left:1.6px solid var(--brand);border-bottom:1.6px solid var(--brand);
  transform:rotate(-45deg);
}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;font-size:17px;font-weight:600;color:var(--ink-0);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary .chev{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line-strong);position:relative;
  transition:transform .22s ease,border-color .22s ease;
}
.faq-item summary .chev::before{
  content:"";position:absolute;left:6px;top:6px;width:8px;height:8px;
  border-right:1.6px solid var(--ink-1);border-bottom:1.6px solid var(--ink-1);
  transform:rotate(45deg) translate(-1px,-1px);
}
.faq-item[open] summary .chev{transform:rotate(180deg);border-color:rgba(25,211,162,.55);}
.faq-item[open] summary .chev::before{border-color:var(--brand);}
.faq-body{padding:0 4px 22px;color:var(--ink-1);font-size:15.5px;max-width:760px;}

/* ---------- CTA + 表单 ---------- */
.cta-block{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;
  padding:44px;border-radius:26px;
  background:linear-gradient(135deg,rgba(25,211,162,.10),rgba(91,140,255,.06) 52%,rgba(255,122,47,.07)),var(--bg-1);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-2);
}
.cta-block h2{font-size:clamp(24px,3vw,32px);margin-bottom:16px;}
.cta-block .cta-copy{color:var(--ink-1);font-size:16px;margin-bottom:22px;}
.cta-points li{
  display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-1);margin-bottom:10px;
}
.cta-points li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-2);margin-top:10px;flex:0 0 auto;
}
.form-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-1);
}
.form-row{display:grid;gap:8px;margin-bottom:16px;}
.form-row label{font-size:14px;color:var(--ink-1);}
.form-row label .req{color:var(--brand-2);margin-left:4px;}
.form-row input,.form-row select,.form-row textarea{
  width:100%;padding:12px 14px;border-radius:var(--radius-sm);
  background:rgba(5,11,20,.6);border:1px solid var(--line);
  color:var(--ink-0);font-size:15px;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-row textarea{min-height:104px;resize:vertical;line-height:1.75;}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  border-color:rgba(25,211,162,.6);box-shadow:0 0 0 4px rgba(25,211,162,.13);
}
.form-row.has-error input,.form-row.has-error select,.form-row.has-error textarea{
  border-color:var(--brand-2);box-shadow:0 0 0 4px rgba(255,122,47,.13);
}
.err-msg{font-size:13px;color:var(--brand-2);display:none;}
.form-row.has-error .err-msg{display:block;}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-2);margin:6px 0 18px;}
.agree input{width:16px;height:16px;margin-top:5px;accent-color:var(--brand);flex:0 0 auto;}
.form-note{font-size:13px;color:var(--ink-2);margin-top:14px;}
.form-tip{
  display:none;margin-top:14px;padding:12px 14px;border-radius:var(--radius-sm);
  background:rgba(25,211,162,.1);border:1px solid rgba(25,211,162,.35);
  font-size:14px;color:var(--brand);
}
.form-tip.is-visible{display:block;}
.spinner{
  width:15px;height:15px;border-radius:50%;
  border:2px solid rgba(4,20,15,.35);border-top-color:#04140F;
  animation:spin .7s linear infinite;display:none;
}
.btn.is-loading .spinner{display:inline-block;}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-1);
  padding:64px 0 32px;
  margin-top:16px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand p{color:var(--ink-2);font-size:14px;margin-top:16px;max-width:320px;}
.footer-col h4{font-size:14.5px;color:var(--ink-0);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:var(--ink-2);font-size:14px;text-decoration:none;}
.footer-col a:hover{color:var(--brand);}
.footer-contact li{color:var(--ink-2);font-size:14px;margin-bottom:10px;}
.footer-contact strong{color:var(--ink-1);font-weight:600;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--ink-2);
}
.footer-bottom a{color:var(--ink-2);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .cmd-search{width:214px;}
  .quick-link{display:none;}
}
@media (max-width:1024px){
  :root{--sec-y:76px;--pad-d:24px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .steps-wrap{grid-template-columns:1fr;gap:36px;}
  .steps-side{position:static;}
  .output-grid{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;gap:32px;}
  .cta-block{grid-template-columns:1fr;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-link{padding:9px 11px;font-size:14px;}
  .cmd-search{display:none;}
}
@media (max-width:920px){
  .menu-toggle{display:block;}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:296px;
    background:var(--bg-1);border-left:1px solid var(--line-strong);
    flex-direction:column;align-items:stretch;gap:6px;
    padding:92px 20px 28px;z-index:58;
    transform:translateX(102%);transition:transform .26s ease;
    box-shadow:var(--shadow-3);overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{padding:13px 14px;font-size:15.5px;border-radius:12px;}
  .nav-mobile-cta{
    display:flex;justify-content:center;margin-top:18px;
    padding:13px 20px;border-radius:var(--radius-pill);
    background:var(--brand);color:#04140F;font-weight:600;font-size:15px;text-decoration:none;
  }
  .header-actions .btn-sm{display:none;}
}
@media (max-width:768px){
  :root{--sec-y:58px;--pad-d:18px;--gap:16px;}
  body{font-size:15.5px;}
  .page-hero{padding:40px 0 62px;}
  .scene-card{grid-column:span 12;}
  .scene-card.offset{margin-top:0;}
  .output-grid{grid-template-columns:1fr;}
  .metrics{grid-template-columns:repeat(2,1fr);gap:20px;}
  .glass-bar{grid-template-columns:repeat(2,1fr);}
  .glass-bar .cell:nth-child(odd){border-left:0;}
  .glass-bar .cell:nth-child(n+3){border-top:1px solid rgba(255,255,255,.09);}
  .hero-note{position:static;margin-top:16px;max-width:none;}
  .hero-figure::after{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .step{grid-template-columns:44px 1fr;gap:16px;}
  .step-no{width:44px;height:44px;border-radius:14px;font-size:14px;}
  .timeline::before{left:21px;}
  .cta-block{padding:24px;}
  .metrics{grid-template-columns:1fr 1fr;}
  .form-card{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --bg-0:#050B14;
  --bg-1:#0A1522;
  --bg-2:#0E1B2A;
  --brand:#19D3A2;
  --brand-2:#FF7A2F;
  --signal:#5B8CFF;
  --ink-0:#F2F7FA;
  --ink-1:#A9BAC8;
  --ink-2:#6E8296;
  --line:rgba(148,180,200,.16);
  --line-strong:rgba(148,180,200,.28);
  --grid:rgba(91,140,255,.07);
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.12);
  --r-card:20px;
  --r-sm:14px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 16px 40px rgba(0,0,0,.5);
  --sh-3:0 32px 80px rgba(0,0,0,.6);
  --font-cn:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --font-num:"Inter","Manrope",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--ink-0);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border-radius:16px}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:-.01em}
p{margin:0 0 18px}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
::selection{background:rgba(25,211,162,.28)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;
}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,11,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{background:var(--bg-1);box-shadow:0 10px 30px rgba(0,0,0,.45)}
.header-inner{display:flex;align-items:center;gap:22px;height:72px}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:26px;height:26px;border-radius:8px;
  background:linear-gradient(140deg,var(--brand),#0f7f63 70%);
  box-shadow:0 0 0 1px rgba(25,211,162,.45),0 6px 18px rgba(25,211,162,.25);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:7px;border-radius:3px;
  background:var(--bg-0);opacity:.85;
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;display:inline-flex;align-items:baseline;gap:6px}
.logo-sub{font-size:11px;font-weight:500;color:var(--ink-1);letter-spacing:.14em}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:6px}
.nav-link{
  position:relative;padding:9px 14px;border-radius:var(--r-pill);
  font-size:14px;color:var(--ink-1);white-space:nowrap;
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--ink-0);background:rgba(255,255,255,.05)}
.nav-link.active{color:var(--ink-0);background:rgba(25,211,162,.12);box-shadow:inset 0 0 0 1px rgba(25,211,162,.35)}
.nav-mobile-cta{display:none}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.cmd-search{
  position:relative;display:flex;align-items:center;gap:8px;
  height:40px;padding:0 12px;min-width:250px;
  background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-pill);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  transition:box-shadow .2s ease,border-color .2s ease;
}
.cmd-search:focus-within{border-color:rgba(25,211,162,.6);box-shadow:0 0 0 4px rgba(25,211,162,.14)}
.cmd-search svg{width:16px;height:16px;flex-shrink:0;fill:none;stroke:var(--ink-2);stroke-width:1.8;stroke-linecap:round}
.cmd-search input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  color:var(--ink-0);font-size:13.5px;font-family:inherit;
}
.cmd-search input::placeholder{color:var(--ink-2)}
.kbd{
  font-size:11px;color:var(--ink-2);border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;font-family:var(--font-num);
}
.search-suggest{
  position:absolute;top:calc(100% + 10px);left:0;right:0;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-sm);
  box-shadow:var(--sh-3);padding:8px;display:none;z-index:60;
}
.cmd-search.is-open .search-suggest{display:block}
.search-suggest a{
  display:block;padding:9px 12px;border-radius:10px;font-size:13.5px;color:var(--ink-1);
  transition:background .16s ease,color .16s ease;
}
.search-suggest a:hover{background:rgba(255,255,255,.06);color:var(--ink-0)}
.suggest-empty{padding:12px;font-size:13px;color:var(--ink-2)}
.quick-link{font-size:14px;color:var(--ink-1);transition:color .18s ease}
.quick-link:hover{color:var(--brand)}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--glass-line);cursor:pointer;
  align-items:center;justify-content:center;
}
.menu-toggle span{display:block;width:17px;height:1.6px;background:var(--ink-0);position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:17px;height:1.6px;background:var(--ink-0);
}
.menu-toggle span::before{top:-5.5px}
.menu-toggle span::after{top:5.5px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;font-family:inherit;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-sm{padding:9px 18px;font-size:13.5px}
.btn-primary{background:var(--brand);color:#04140F}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(25,211,162,.5),0 10px 30px rgba(25,211,162,.28)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(25,211,162,.32),0 4px 14px rgba(25,211,162,.2)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--ink-0)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(25,211,162,.08);color:var(--ink-0)}
.btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}

/* ============ 面包屑 ============ */
.breadcrumb{
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(91,140,255,.05),transparent);
}
.breadcrumb ol{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:16px 0;font-size:13px;color:var(--ink-2)}
.breadcrumb a{color:var(--ink-1);transition:color .16s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--ink-2);opacity:.6}
.breadcrumb .current{color:var(--ink-0)}

/* ============ 页面 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(5,11,20,.86),var(--bg-0)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:48px 48px;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(25,211,162,.22),transparent 68%);pointer-events:none;
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  padding:76px 0 72px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;letter-spacing:.16em;color:var(--brand);
  border:1px solid rgba(25,211,162,.35);background:rgba(25,211,162,.08);
  border-radius:var(--r-pill);padding:6px 14px;margin-bottom:22px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand-2)}
.page-hero h1{
  font-size:clamp(30px,4.4vw,54px);font-weight:700;letter-spacing:-.02em;
  margin-bottom:20px;
}
.page-hero h1 em{font-style:normal;color:var(--brand)}
.hero-lead{font-size:17.5px;color:var(--ink-1);max-width:620px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:0;background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-sm);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.1);overflow:hidden;
}
.hero-stats .stat{padding:18px 20px;border-right:1px solid var(--line)}
.hero-stats .stat:last-child{border-right:0}
.stat-num{font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--ink-0);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-num span{font-size:13px;color:var(--ink-1);font-weight:500;margin-left:3px}
.stat-label{font-size:12.5px;color:var(--ink-2);margin-top:4px}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border:1px solid var(--glass-line);box-shadow:var(--sh-2);
}
.hero-figure figcaption{
  margin-top:12px;font-size:12.5px;color:var(--ink-2);padding-left:12px;
  border-left:2px solid rgba(255,122,47,.6);
}

/* ============ 通用板块 ============ */
.section{
  padding:96px 0;
  border-bottom:1px solid var(--line);
  position:relative;
}
.section.alt{background:var(--bg-1)}
.section.alt::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:64px 64px;pointer-events:none;opacity:.6;
}
.section > .container{position:relative;z-index:1}
.section-head{max-width:760px;margin-bottom:52px}
.section-tag{
  display:inline-block;font-size:12.5px;letter-spacing:.18em;color:var(--brand-2);
  margin-bottom:14px;padding-left:26px;position:relative;
}
.section-tag::before{
  content:"";position:absolute;left:0;top:50%;width:16px;height:1px;background:var(--brand-2);
}
.section-head h2{font-size:clamp(24px,3vw,36px);font-weight:700;margin-bottom:16px}
.section-head p{color:var(--ink-1);font-size:16.5px;margin:0}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;flex-wrap:wrap;margin-bottom:48px}
.section-head-row h2{font-size:clamp(24px,3vw,36px);font-weight:700;max-width:640px}
.link-more{font-size:14.5px;color:var(--brand);display:inline-flex;align-items:center;gap:7px}
.link-more::after{content:"→";transition:transform .18s ease}
.link-more:hover::after{transform:translateX(4px)}

/* ============ 规格矩阵表 ============ */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--bg-2);box-shadow:var(--sh-1);
}
table.matrix{min-width:880px;font-size:14.5px}
table.matrix caption{
  text-align:left;padding:20px 24px 4px;color:var(--ink-1);font-size:13.5px;
}
table.matrix th,table.matrix td{
  padding:16px 20px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;
}
table.matrix thead th{
  background:rgba(91,140,255,.08);color:var(--ink-1);font-size:13px;font-weight:600;
  letter-spacing:.04em;white-space:nowrap;
}
table.matrix tbody tr{transition:background .18s ease}
table.matrix tbody tr:hover{background:rgba(25,211,162,.05)}
table.matrix tbody tr:last-child th,table.matrix tbody tr:last-child td{border-bottom:0}
table.matrix tbody th{font-weight:600;color:var(--ink-0);white-space:nowrap;font-size:14.5px}
table.matrix td{color:var(--ink-1)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--ink-0)}
.pill{
  display:inline-block;font-size:12px;padding:3px 10px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);color:var(--ink-1);white-space:nowrap;
}
.pill.ok{color:var(--brand);border-color:rgba(25,211,162,.45);background:rgba(25,211,162,.08)}
.pill.warn{color:var(--brand-2);border-color:rgba(255,122,47,.45);background:rgba(255,122,47,.08)}

/* ============ 对比卡 ============ */
.compare-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.compare-card{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-2);
  padding:30px 28px;display:flex;flex-direction:column;gap:18px;
  box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  position:relative;overflow:hidden;
}
.compare-card::after{
  content:"";position:absolute;left:0;top:0;height:2px;width:100%;
  background:linear-gradient(90deg,var(--brand),transparent);opacity:0;transition:opacity .2s ease;
}
.compare-card:hover{transform:translateY(-4px);border-color:rgba(25,211,162,.42);box-shadow:var(--sh-2)}
.compare-card:hover::after{opacity:1}
.compare-card.featured{
  background:linear-gradient(180deg,rgba(25,211,162,.1),rgba(14,27,42,1));
  border-color:rgba(25,211,162,.38);
}
.compare-card.featured::after{opacity:1}
.compare-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.compare-head h3{font-size:20px;font-weight:700}
.compare-desc{color:var(--ink-1);font-size:14.5px;margin:0}
.compare-specs{display:grid;gap:10px;border-top:1px solid var(--line);padding-top:16px}
.compare-specs li{display:flex;justify-content:space-between;gap:14px;font-size:13.5px;color:var(--ink-2)}
.compare-specs strong{color:var(--ink-0);font-weight:600;font-family:var(--font-num);font-variant-numeric:tabular-nums}
.compare-list{display:grid;gap:10px}
.compare-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-1)}
.compare-list li::before{
  content:"";flex-shrink:0;width:7px;height:7px;margin-top:9px;border-radius:2px;
  background:var(--brand);transform:rotate(45deg);
}

/* ============ 横向流程 ============ */
.flow{
  display:grid;grid-template-columns:repeat(6,minmax(0,1fr));
  gap:18px;position:relative;
}
.flow::before{
  content:"";position:absolute;left:0;right:0;top:23px;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-strong) 6%,var(--line-strong) 94%,transparent);
}
.flow-step{position:relative;padding-top:56px}
.flow-step .idx{
  position:absolute;top:0;left:0;width:46px;height:46px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:15px;font-weight:700;color:var(--brand);
  background:var(--bg-1);border:1px solid rgba(25,211,162,.4);
  box-shadow:0 0 0 6px var(--bg-0);
}
.section.alt .flow-step .idx{box-shadow:0 0 0 6px var(--bg-1)}
.flow-step h3{font-size:16.5px;margin-bottom:8px}
.flow-step p{font-size:13.5px;color:var(--ink-2);margin:0;line-height:1.7}

/* ============ 设备标签区 ============ */
.tag-panel{
  display:grid;grid-template-columns:1fr 1.25fr;gap:44px;align-items:center;
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--bg-2);
  padding:40px;box-shadow:var(--sh-1);
}
.tag-panel h3{font-size:22px;margin-bottom:14px}
.tag-panel p{color:var(--ink-1);font-size:15px;margin:0}
.chip-list{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  font-size:13.5px;color:var(--ink-1);padding:8px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.chip:hover{color:var(--ink-0);border-color:var(--brand);background:rgba(25,211,162,.1)}

/* ============ FAQ ============ */
.faq{max-width:860px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:24px 44px 24px 0;position:relative;
  font-size:17px;font-weight:600;color:var(--ink-0);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:8px;top:50%;width:11px;height:11px;
  border-right:1.6px solid var(--brand);border-bottom:1.6px solid var(--brand);
  transform:translateY(-70%) rotate(45deg);transition:transform .22s ease;
}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-item summary:hover{color:var(--brand)}
.faq-body{padding:0 44px 26px 0;color:var(--ink-1);font-size:15.5px;line-height:1.9}
.faq-body p:last-child{margin-bottom:0}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:calc(var(--r-card) + 6px);
  background:linear-gradient(120deg,rgba(25,211,162,.14),rgba(14,27,42,.9) 52%,rgba(255,122,47,.12));
  padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  box-shadow:var(--sh-2);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:52px 52px;pointer-events:none;
}
.cta-copy{position:relative;z-index:1;max-width:640px}
.cta-copy h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:14px}
.cta-copy p{color:var(--ink-1);margin:0;font-size:15.5px}
.cta-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap}
.privacy-note{
  font-size:13px;color:var(--ink-2);max-width:860px;margin:24px auto 0;
  display:flex;gap:10px;align-items:flex-start;line-height:1.75;
}
.privacy-note a{color:var(--signal);border-bottom:1px dashed rgba(91,140,255,.5)}

/* ============ 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(3,7,13,.78);backdrop-filter:blur(6px)}
.modal-card{
  position:relative;z-index:1;width:100%;max-width:540px;max-height:88vh;overflow-y:auto;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  padding:34px;box-shadow:var(--sh-3);
}
.modal-card h3{font-size:22px;margin-bottom:10px}
.modal-card .modal-sub{font-size:14px;color:var(--ink-2);margin-bottom:24px}
.modal-close{
  position:absolute;right:18px;top:18px;width:36px;height:36px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--ink-1);
  cursor:pointer;font-size:17px;line-height:1;display:flex;align-items:center;justify-content:center;
  transition:color .18s ease,border-color .18s ease;
}
.modal-close:hover{color:var(--brand);border-color:var(--brand)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;color:var(--ink-1);margin-bottom:8px}
.field label .req{color:var(--brand-2);margin-left:3px}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-sm);
  background:var(--bg-2);border:1px solid var(--line);color:var(--ink-0);
  font-size:14.5px;font-family:inherit;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{min-height:96px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 4px rgba(25,211,162,.15);
}
.field.has-error input,.field.has-error select{border-color:var(--brand-2);box-shadow:0 0 0 4px rgba(255,122,47,.12)}
.field .err{display:none;font-size:12.5px;color:var(--brand-2);margin-top:6px}
.field.has-error .err{display:block}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-2);line-height:1.7}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand);flex-shrink:0}
.form-actions{margin-top:22px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.spinner{
  width:15px;height:15px;border-radius:50%;
  border:2px solid rgba(4,20,15,.35);border-top-color:#04140F;
  animation:spin .7s linear infinite;display:none;
}
.btn.is-loading .spinner{display:block}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-1);
  padding:70px 0 30px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid var(--line);
}
.footer-brand p{color:var(--ink-2);font-size:13.5px;line-height:1.85;margin:18px 0 0;max-width:340px}
.footer-col h4{font-size:14px;color:var(--ink-0);margin-bottom:18px;font-weight:600;letter-spacing:.02em}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:13.5px;color:var(--ink-2);transition:color .18s ease}
.footer-col a:hover{color:var(--brand)}
.footer-contact li{font-size:13.5px;color:var(--ink-2)}
.footer-contact strong{color:var(--ink-1);font-weight:600}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding-top:24px;font-size:13px;color:var(--ink-2);
}
.footer-bottom a{color:var(--ink-1)}
.footer-bottom a:hover{color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .cmd-search{min-width:200px}
  .quick-link{display:none}
  .flow{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:34px}
  .flow::before{display:none}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:60px 0}
  .hero-figure{order:-1}
  .compare-grid{grid-template-columns:1fr 1fr}
  .tag-panel{grid-template-columns:1fr;gap:26px;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .section{padding:72px 0}
}
@media (max-width:920px){
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
    background:var(--bg-1);border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:6px;
    padding:88px 20px 24px;margin:0;z-index:90;
    transform:translateX(100%);transition:transform .26s ease;
    box-shadow:var(--sh-3);overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{padding:14px 16px;border-radius:14px;font-size:15px}
  .nav-mobile-cta{
    display:flex;align-items:center;justify-content:center;margin-top:auto;
    padding:14px 20px;border-radius:var(--r-pill);background:var(--brand);color:#04140F;
    font-weight:600;font-size:15px;
  }
  .menu-toggle{display:flex}
  .cmd-search{min-width:0;width:42px;padding:0;justify-content:center;cursor:pointer}
  .cmd-search input,.cmd-search .kbd{display:none}
  .cmd-search.is-expanded{
    position:absolute;left:18px;right:18px;top:14px;width:auto;
    justify-content:flex-start;padding:0 14px;background:var(--bg-1);z-index:95;
  }
  .cmd-search.is-expanded input{display:block}
  .cmd-search.is-expanded .search-suggest{display:block}
  .header-actions .btn-sm{display:none}
  .nav-overlay{
    position:fixed;inset:0;background:rgba(3,7,13,.6);z-index:85;opacity:0;pointer-events:none;
    transition:opacity .26s ease;
  }
  .nav-overlay.is-open{opacity:1;pointer-events:auto}
  .cta-band{padding:38px 28px}
}
@media (max-width:768px){
  .compare-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(3,minmax(0,1fr))}
  .stat-num{font-size:22px}
  .flow{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:52px 0}
  .page-hero h1{font-size:30px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-stats{grid-template-columns:1fr 1fr}
  .hero-stats .stat:nth-child(2){border-right:0}
  .hero-stats .stat:nth-child(3){grid-column:1 / -1;border-top:1px solid var(--line)}
  .flow{grid-template-columns:1fr}
  .tag-panel{padding:24px}
  .footer-grid{grid-template-columns:1fr}
  .cta-band{padding:30px 22px}
  .cta-actions .btn{flex:1 1 100%}
  .modal-card{padding:26px 22px}
  .footer-bottom{justify-content:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}