/* roulang page: index */
:root{
  --brand-900:#06342A;
  --brand-700:#0B5F4C;
  --brand-500:#12A07E;
  --brand-300:#6FD3B6;
  --brand-50:#E9F6F1;
  --accent-500:#FF6A2B;
  --accent-600:#E85A1E;
  --accent-100:#FFE8DC;
  --neg:#D9483B;
  --ink-900:#0C1211;
  --ink-600:#4A5654;
  --ink-400:#7C8A87;
  --line:#E3EBE8;
  --surface:#FFFFFF;
  --surface-50:#F5F8F7;
  --dark-900:#0A1512;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(12,18,17,.06);
  --shadow-float:0 14px 32px -14px rgba(6,52,42,.25);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.25;font-weight:800;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:44px;
}
.section-head .head-main{position:relative;padding-left:16px;}
.section-head .head-main::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:3px;
  background:var(--accent-500);
  transform:skewX(-12deg);
}
.section-head h2{
  font-size:clamp(24px,3vw,36px);
  letter-spacing:-.01em;
}
.section-head .head-desc{
  margin-top:10px;
  font-size:15px;
  color:var(--ink-400);
  max-width:640px;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:700;
  color:var(--brand-700);
  white-space:nowrap;
  transition:color .2s ease;
}
.text-link .arrow{transition:transform .2s ease;display:inline-block;}
.text-link:hover{color:var(--brand-500);}
.text-link:hover .arrow{transform:translateX(3px);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  font-size:16px;
  font-weight:700;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-primary{
  background:var(--accent-500);
  color:#fff;
  box-shadow:0 8px 20px -12px rgba(255,106,43,.9);
}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-outline{
  background:transparent;
  border-color:var(--brand-500);
  color:var(--brand-700);
}
.btn-outline:hover{background:var(--brand-50);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.45);
  color:#fff;
}
.btn-ghost:hover{background:rgba(255,255,255,.18);border-color:#fff;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-block{width:100%;}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.02em;
  background:var(--brand-50);
  color:var(--brand-700);
  border:1px solid rgba(18,160,126,.18);
}
.badge-accent{background:var(--accent-100);color:#B7431A;border-color:rgba(255,106,43,.22);}
.badge-dark{background:rgba(255,255,255,.1);color:var(--brand-300);border-color:rgba(111,211,182,.28);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(1.4) blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px -14px rgba(6,52,42,.35);
  background:#fff;
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:28px;
  height:72px;
}
.nav-side{display:flex;align-items:center;gap:30px;}
.nav-left{justify-content:center;}
.nav-right{justify-content:center;}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:600;
  color:var(--ink-600);
  padding:6px 2px;
  transition:color .18s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-4px;
  height:3px;
  border-radius:2px;
  background:var(--accent-500);
  transform:scaleX(0);
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-700);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  justify-self:center;
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:9px;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  color:#fff;
  font-size:13px;
  font-weight:800;
  letter-spacing:.04em;
}
.brand-text{
  font-size:18px;
  font-weight:800;
  color:var(--ink-900);
  letter-spacing:-.01em;
  white-space:nowrap;
}
.nav-toggle{
  display:none;
  justify-self:end;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--ink-900);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-menu{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  max-height:80vh;
  overflow-y:auto;
}
.mobile-menu.is-open{display:block;}
.mobile-menu a{
  display:block;
  padding:0 24px;
  height:52px;
  line-height:52px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.mobile-menu a.is-active{color:var(--brand-700);background:var(--brand-50);}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;
  overflow:hidden;
  background:var(--dark-900);
  color:#fff;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
}
.hero-overlay{
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg,rgba(6,52,42,.82) 0%,rgba(6,52,42,.74) 52%,rgba(10,21,18,.97) 100%),
    linear-gradient(90deg,rgba(6,52,42,.72) 0%,rgba(6,52,42,.28) 62%,rgba(6,52,42,.55) 100%);
}
.hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
  padding-top:96px;
  padding-bottom:96px;
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:999px;
  background:rgba(111,211,182,.14);
  border:1px solid rgba(111,211,182,.34);
  color:var(--brand-300);
  font-size:13px;
  font-weight:700;
  letter-spacing:.03em;
}
.hero h1{
  margin-top:22px;
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.15;
  color:#fff;
  letter-spacing:-.02em;
}
.hero h1 em{
  font-style:normal;
  color:var(--brand-300);
}
.hero-sub{
  margin-top:20px;
  font-size:18px;
  line-height:1.75;
  color:rgba(255,255,255,.82);
  max-width:560px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
}
.hero-trust{
  display:flex;
  flex-wrap:wrap;
  gap:10px 26px;
  margin-top:34px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-trust li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.68);
}
.hero-trust li::before{
  content:"";
  width:6px;height:6px;
  border-radius:2px;
  background:var(--brand-300);
  flex:none;
}
.hero-card{
  background:rgba(10,21,18,.72);
  border:1px solid rgba(111,211,182,.22);
  border-radius:var(--radius-card);
  padding:26px 24px 20px;
  box-shadow:0 24px 50px -28px rgba(0,0,0,.75);
}
.hero-card-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:16px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.hero-card-head strong{
  font-size:15px;
  color:#fff;
  font-weight:700;
}
.hero-card-head span{
  font-size:12px;
  color:var(--brand-300);
}
.hero-metrics{margin-top:6px;}
.hero-metrics li{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:13px 0;
  border-bottom:1px dashed rgba(255,255,255,.12);
}
.hero-metrics li:last-child{border-bottom:0;}
.hero-metrics .m-label{font-size:14px;color:rgba(255,255,255,.7);}
.hero-metrics .m-value{
  font-size:20px;
  font-weight:800;
  color:#fff;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.hero-metrics .m-value.is-accent{color:var(--accent-500);}
.hero-card-foot{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:10px;
  padding-top:16px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:12px;
  color:rgba(255,255,255,.5);
}
.hero-card-foot .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--brand-300);
  box-shadow:0 0 0 4px rgba(111,211,182,.16);
  flex:none;
}

/* ---------- 指标看板 ---------- */
.board{
  background:var(--dark-900);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.board::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(180deg,rgba(255,255,255,.04) 0 1px,transparent 1px 26px);
  opacity:.5;
  pointer-events:none;
}
.board .container{position:relative;z-index:2;}
.board-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:38px;
}
.board-head h2{
  color:#fff;
  font-size:clamp(24px,3vw,34px);
}
.board-head p{
  margin-top:10px;
  font-size:15px;
  color:rgba(255,255,255,.6);
  max-width:560px;
}
.board-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.board-card{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(111,211,182,.16);
  border-radius:var(--radius-card);
  padding:24px 22px;
  transition:border-color .2s ease,transform .2s ease,background-color .2s ease;
}
.board-card:hover{
  border-color:rgba(111,211,182,.45);
  background:rgba(255,255,255,.07);
  transform:translateY(-2px);
}
.board-card .num{
  font-size:clamp(38px,5vw,64px);
  font-weight:800;
  line-height:1.05;
  color:var(--brand-300);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.board-card .num.is-accent{color:var(--accent-500);}
.board-card .num .unit{
  font-size:16px;
  font-weight:700;
  color:rgba(255,255,255,.6);
  margin-left:5px;
  letter-spacing:0;
}
.board-card .desc{
  margin-top:12px;
  font-size:14px;
  color:rgba(255,255,255,.72);
  line-height:1.6;
}
.board-card .delta{
  display:inline-flex;
  align-items:center;
  gap:5px;
  margin-top:14px;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  background:rgba(18,160,126,.18);
  color:var(--brand-300);
}
.board-card .delta.is-down{
  background:rgba(217,72,59,.16);
  color:#F19083;
}

/* ---------- 服务矩阵 ---------- */
.matrix{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.matrix-main{
  grid-column:span 2;
  grid-row:span 2;
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.matrix-main:hover{
  border-color:var(--brand-300);
  box-shadow:var(--shadow-float);
  transform:translateY(-2px);
}
.matrix-main figure{
  margin:0;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--brand-50);
}
.matrix-main figure img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.matrix-main:hover figure img{transform:scale(1.04);}
.matrix-main-body{padding:26px 26px 28px;}
.matrix-main-body h3{font-size:22px;}
.matrix-main-body p{
  margin-top:12px;
  font-size:15px;
  color:var(--ink-600);
}
.matrix-main-body .text-link{margin-top:18px;}
.matrix-sm{
  background:var(--surface-50);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 22px;
  display:flex;
  flex-direction:column;
  transition:border-color .2s ease,background-color .2s ease,transform .2s ease;
}
.matrix-sm:hover{
  border-color:var(--brand-300);
  background:#fff;
  transform:translateY(-2px);
}
.matrix-icon{
  width:40px;height:40px;
  border-radius:10px;
  background:var(--brand-50);
  border:1px solid rgba(18,160,126,.2);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--brand-700);
  font-weight:800;
  font-size:15px;
  font-variant-numeric:tabular-nums;
}
.matrix-sm h3{
  margin-top:16px;
  font-size:18px;
}
.matrix-sm p{
  margin-top:10px;
  font-size:14px;
  line-height:1.7;
  color:var(--ink-600);
}
.matrix-sm .text-link{margin-top:auto;padding-top:16px;font-size:14px;}
.matrix-bar{
  grid-column:1 / -1;
  position:relative;
  display:flex;
  align-items:center;
  gap:18px;
  padding:20px 26px 20px 30px;
  background:var(--brand-900);
  border-radius:var(--radius-card);
  color:rgba(255,255,255,.82);
}
.matrix-bar::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:4px;
  background:var(--accent-500);
  transform:skewX(-12deg);
  border-radius:var(--radius-card) 0 0 var(--radius-card);
}
.matrix-bar strong{color:#fff;font-size:15px;white-space:nowrap;}
.matrix-bar span{font-size:14px;color:rgba(255,255,255,.68);}
.matrix-bar a{
  margin-left:auto;
  font-size:14px;
  font-weight:700;
  color:var(--brand-300);
  white-space:nowrap;
  transition:color .18s ease;
}
.matrix-bar a:hover{color:#fff;}

/* ---------- 最新信息 CMS ---------- */
.news-wrap{display:grid;gap:18px;}
.cms-feature{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:0;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.cms-feature:hover{
  border-color:var(--brand-300);
  box-shadow:var(--shadow-float);
  transform:translateY(-2px);
}
.cms-feature-media{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--brand-50);
}
.cms-feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.cms-feature:hover .cms-feature-media img{transform:scale(1.04);}
.cms-feature-body{
  padding:32px 34px;
  display:flex;
  flex-direction:column;
  gap:14px;
  justify-content:center;
}
.cms-feature-body h3{
  font-size:22px;
  line-height:1.45;
  transition:color .2s ease;
}
.cms-feature:hover .cms-feature-body h3{color:var(--brand-700);}
.cms-feature-body p{
  font-size:15px;
  color:var(--ink-600);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.cms-meta{
  display:flex;
  align-items:center;
  gap:14px;
  font-size:13px;
  color:var(--ink-400);
  font-variant-numeric:tabular-nums;
}
.cms-rows{display:grid;gap:12px;}
.cms-row{
  display:flex;
  align-items:center;
  gap:20px;
  padding:20px 24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.cms-row:hover{
  border-color:var(--brand-300);
  box-shadow:var(--shadow-float);
  transform:translateY(-2px);
}
.cms-row-main{flex:1;min-width:0;}
.cms-row-main h3{
  font-size:17px;
  line-height:1.5;
  transition:color .2s ease;
}
.cms-row:hover .cms-row-main h3{color:var(--brand-700);}
.cms-row-main p{
  margin-top:6px;
  font-size:14px;
  color:var(--ink-600);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.cms-row-side{
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:8px;
  flex:none;
  font-size:13px;
  color:var(--ink-400);
}
.cms-empty{
  padding:56px 32px;
  border:1.5px dashed var(--line);
  border-radius:var(--radius-card);
  background:var(--surface-50);
  text-align:center;
}
.cms-empty p{font-size:15px;color:var(--ink-400);}
.cms-empty a{
  display:inline-block;
  margin-top:14px;
  font-size:15px;
  font-weight:700;
  color:var(--brand-700);
}
.cms-empty a:hover{color:var(--brand-500);}

/* ---------- 对比区 ---------- */
.compare{
  display:grid;
  grid-template-columns:1fr 1px 1fr;
  gap:0;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  background:var(--surface);
  box-shadow:var(--shadow-card);
}
.compare-divider{background:var(--line);}
.compare-col{padding:34px 32px 38px;}
.compare-col h3{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:19px;
}
.compare-col h3 .tagline{
  display:inline-block;
  width:10px;height:10px;
  border-radius:3px;
  flex:none;
}
.compare-col.is-old h3 .tagline{background:var(--ink-400);}
.compare-col.is-new h3 .tagline{background:var(--brand-500);}
.compare-col .sub{
  margin-top:8px;
  font-size:14px;
  color:var(--ink-400);
}
.compare-list{margin-top:26px;display:grid;gap:22px;}
.compare-item .line-top{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  margin-bottom:10px;
}
.compare-item .line-top span{font-size:14px;color:var(--ink-600);}
.compare-item .line-top b{
  font-size:16px;
  font-variant-numeric:tabular-nums;
  color:var(--ink-900);
}
.compare-col.is-new .line-top b{color:var(--brand-700);}
.bar{
  height:8px;
  border-radius:999px;
  background:var(--surface-50);
  overflow:hidden;
}
.bar i{
  display:block;
  height:100%;
  border-radius:999px;
  background:linear-gradient(90deg,#B9C6C2,#8FA29D);
}
.compare-col.is-new .bar i{background:linear-gradient(90deg,var(--brand-300),var(--brand-500));}
.bar i.w-20{width:20%;}
.bar i.w-28{width:28%;}
.bar i.w-35{width:35%;}
.bar i.w-58{width:58%;}
.bar i.w-72{width:72%;}
.bar i.w-90{width:90%;}
.bar i.w-95{width:95%;}

/* ---------- FAQ ---------- */
.faq-shell{max-width:840px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  position:relative;
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 0 22px 18px;
  background:transparent;
  border:0;
  cursor:pointer;
  text-align:left;
  font-size:17px;
  font-weight:700;
  color:var(--ink-900);
  transition:color .2s ease;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:24px;bottom:24px;
  width:3px;
  border-radius:2px;
  background:var(--accent-500);
  opacity:0;
  transition:opacity .2s ease;
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-q:hover{color:var(--brand-700);}
.faq-icon{
  position:relative;
  width:20px;height:20px;
  flex:none;
  transition:transform .25s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--brand-700);
  border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 44px 24px 18px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-600);
}

/* ---------- CTA 表单 ---------- */
.cta-section{
  background:linear-gradient(180deg,var(--brand-50) 0%,var(--surface-50) 100%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-card{
  max-width:720px;
  margin:0 auto;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-float);
  padding:40px 40px 44px;
}
.cta-card h2{font-size:clamp(22px,2.6vw,30px);}
.cta-card .cta-sub{
  margin-top:12px;
  font-size:15px;
  color:var(--ink-600);
}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px 20px;
  margin-top:28px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field-full{grid-column:1 / -1;}
.field label{
  font-size:14px;
  font-weight:700;
  color:var(--ink-900);
}
.field input,
.field select,
.field textarea{
  width:100%;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--surface-50);
  padding:12px 14px;
  font-size:15px;
  color:var(--ink-900);
  transition:border-color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field input::placeholder,
.field textarea::placeholder{color:var(--ink-400);}
.field input:hover,
.field select:hover,
.field textarea:hover{border-color:var(--brand-300);}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  background:#fff;
  border-color:var(--brand-500);
  box-shadow:0 0 0 3px rgba(18,160,126,.14);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea{
  border-color:var(--neg);
  background:#FEF4F3;
}
.field .err{
  display:none;
  font-size:12px;
  color:var(--neg);
}
.field.has-error .err{display:block;}
.check-row{
  grid-column:1 / -1;
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:13px;
  color:var(--ink-400);
  line-height:1.6;
}
.check-row input{
  width:16px;height:16px;
  margin-top:4px;
  accent-color:var(--brand-500);
  flex:none;
}
.form-actions{grid-column:1 / -1;margin-top:6px;}
.form-note{
  margin-top:14px;
  font-size:13px;
  color:var(--ink-400);
}
.form-alert{
  display:none;
  margin-top:20px;
  padding:14px 18px;
  border-radius:var(--radius-btn);
  font-size:14px;
}
.form-alert.is-success{
  display:block;
  border:1px solid var(--brand-500);
  background:var(--brand-50);
  color:var(--brand-700);
}
.form-alert.is-error{
  display:block;
  border:1px solid var(--neg);
  background:#FEF4F3;
  color:var(--neg);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark-900);
  color:rgba(255,255,255,.62);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:44px;
  padding-bottom:52px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.6);
  max-width:340px;
}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col li{margin-bottom:12px;}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.62);
  transition:color .18s ease;
}
.footer-col a:hover{color:var(--brand-300);}
.footer-col .plain{
  font-size:14px;
  color:rgba(255,255,255,.62);
  line-height:1.8;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 28px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.45);
}
.footer-bottom p{margin:0;}
.footer-bottom a{color:rgba(255,255,255,.55);}
.footer-bottom a:hover{color:var(--brand-300);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1080px;}
  .hero-inner{gap:40px;}
}
@media (max-width:1023px){
  .nav-side{gap:22px;}
  .nav-link{font-size:14px;}
  .hero-inner{
    grid-template-columns:1fr;
    gap:36px;
    padding-top:72px;
    padding-bottom:72px;
  }
  .hero-card{max-width:560px;}
  .board-grid{grid-template-columns:repeat(2,1fr);}
  .matrix{grid-template-columns:repeat(2,1fr);}
  .matrix-main{grid-column:span 2;grid-row:auto;}
  .cms-feature{grid-template-columns:1fr;}
  .cms-feature-media{aspect-ratio:16/9;}
  .compare{grid-template-columns:1fr;}
  .compare-divider{height:1px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  .container{padding:0 24px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .section-head{
    flex-direction:column;
    align-items:flex-start;
    gap:16px;
    margin-bottom:32px;
  }
  .nav-side{display:none;}
  .header-inner{grid-template-columns:40px 1fr 40px;height:64px;gap:12px;}
  .brand{justify-self:center;}
  .nav-toggle{display:flex;justify-self:start;grid-column:1;}
  .brand{grid-column:2;}
  .hero-inner{padding-top:56px;padding-bottom:56px;}
  .hero-sub{font-size:16px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{flex:1 1 auto;min-width:150px;}
  .board-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
  .board-card{padding:20px 18px;}
  .matrix{grid-template-columns:1fr;}
  .matrix-main{grid-column:span 1;}
  .matrix-bar{
    flex-direction:column;
    align-items:flex-start;
    gap:10px;
    padding:20px 22px 20px 26px;
  }
  .matrix-bar a{margin-left:0;}
  .cms-row{
    flex-direction:column;
    align-items:flex-start;
    gap:12px;
  }
  .cms-row-side{flex-direction:row;align-items:center;gap:12px;}
  .cms-feature-body{padding:24px 22px 26px;}
  .compare-col{padding:26px 22px 30px;}
  .form-grid{grid-template-columns:1fr;}
  .cta-card{padding:32px 24px 36px;}
  .form-actions .btn{width:100%;}
  .faq-q{font-size:16px;padding:20px 0 20px 16px;}
  .faq-a p{padding:0 24px 22px 16px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:479px){
  .hero h1{font-size:28px;}
  .board-card .num{font-size:36px;}
  .board-grid{grid-template-columns:repeat(2,1fr);}
  .btn{height:46px;padding:0 20px;font-size:15px;}
  .cms-feature-body h3{font-size:19px;}
}

/* roulang page: article */
:root{
  --brand-900:#06342A;
  --brand-700:#0B5F4C;
  --brand-500:#12A07E;
  --brand-300:#6FD3B6;
  --brand-50:#E9F6F1;
  --accent-500:#FF6A2B;
  --accent-600:#E85A1E;
  --accent-100:#FFE8DC;
  --danger:#D9483B;
  --ink-900:#0C1211;
  --ink-600:#4A5654;
  --ink-400:#7C8A87;
  --line:#E3EBE8;
  --surface:#FFFFFF;
  --surface-50:#F5F8F7;
  --dark-900:#0A1512;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(12,18,17,.06);
  --shadow-float:0 14px 32px -14px rgba(6,52,42,.25);
  --container:1240px;
  --space-section:88px;
}
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; }
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; border:0; }
a{ color:var(--brand-700); text-decoration:none; transition:color .2s ease; }
a:hover{ color:var(--accent-500); }
h1,h2,h3,h4{ margin:0; color:var(--ink-900); font-weight:800; line-height:1.3; }
p{ margin:0; }
ul,ol{ margin:0; padding:0; list-style:none; }
button,input,textarea,select{ font:inherit; color:inherit; }
button{ background:none; border:0; cursor:pointer; }
:focus-visible{ outline:2px solid var(--brand-500); outline-offset:2px; border-radius:4px; }
.container{ width:100%; max-width:var(--container); margin:0 auto; padding:0 40px; }

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky; top:0; z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled{ border-bottom-color:var(--line); box-shadow:0 6px 24px -20px rgba(6,52,42,.55); }
.header-inner{
  height:72px;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
}
.nav-side{ display:flex; align-items:center; gap:28px; }
.nav-right{ justify-content:flex-end; }
.nav-link{
  position:relative;
  font-size:15px; font-weight:600;
  color:var(--ink-600);
  padding:6px 2px;
  white-space:nowrap;
}
.nav-link::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px;
  height:3px; border-radius:2px; background:var(--accent-500);
  transform:scaleX(0); transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{ color:var(--brand-700); }
.nav-link:hover::after{ transform:scaleX(1); }
.nav-link.is-active{ color:var(--brand-900); }
.nav-link.is-active::after{ transform:scaleX(1); }
.brand{ display:inline-flex; align-items:center; gap:10px; font-weight:800; color:var(--brand-900); }
.brand:hover{ color:var(--brand-700); }
.brand-mark{
  width:34px; height:34px; flex:0 0 34px;
  display:grid; place-items:center;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  color:#fff; font-size:13px; font-weight:800; letter-spacing:.02em;
}
.brand-text{ font-size:19px; letter-spacing:-.01em; white-space:nowrap; }
.nav-icon-btn,.nav-toggle{
  display:none;
  width:42px; height:42px;
  border-radius:10px;
  color:var(--ink-600);
  align-items:center; justify-content:center;
  transition:background .2s ease, color .2s ease;
}
.nav-icon-btn:hover,.nav-toggle:hover{ background:var(--brand-50); color:var(--brand-700); }
.nav-toggle{ flex-direction:column; gap:5px; }
.nav-toggle span{ display:block; width:20px; height:2px; border-radius:2px; background:currentColor; transition:transform .22s ease, opacity .22s 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-menu{ display:none; background:#fff; border-top:1px solid var(--line); }
.mobile-menu.is-open{ display:block; max-height:80vh; overflow-y:auto; }
.mobile-menu a{
  display:flex; align-items:center; height:52px; padding:0 24px;
  font-size:15px; font-weight:600; color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.mobile-menu a:last-child{ border-bottom:0; }
.mobile-menu a:hover,.mobile-menu a.is-active{ color:var(--brand-700); background:var(--brand-50); }

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:48px; padding:0 22px;
  border-radius:var(--radius-btn);
  border:1.5px solid transparent;
  font-size:15px; font-weight:700;
  white-space:nowrap;
  transition:background .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.btn-primary{ background:var(--accent-500); color:#fff; }
.btn-primary:hover{ background:var(--accent-600); color:#fff; transform:translateY(-1px); box-shadow:var(--shadow-float); }
.btn-primary:active{ transform:translateY(0); filter:brightness(.94); }
.btn-ghost{ background:transparent; border-color:var(--brand-500); color:var(--brand-700); }
.btn-ghost:hover{ background:var(--brand-50); color:var(--brand-700); transform:translateY(-1px); }
.btn-ghost:active{ transform:translateY(0); }
.btn-text{
  display:inline-flex; align-items:center; gap:6px;
  color:var(--brand-700); font-weight:700; font-size:15px;
}
.btn-text .arrow{ transition:transform .2s ease; }
.btn-text:hover{ color:var(--accent-500); }
.btn-text:hover .arrow{ transform:translateX(3px); }
.badge{
  display:inline-flex; align-items:center;
  padding:4px 12px;
  border-radius:999px;
  font-size:13px; font-weight:600;
  background:var(--brand-50); color:var(--brand-700);
}
.badge-accent{ background:var(--accent-100); color:var(--accent-600); }
.badge-light{ background:rgba(255,255,255,.14); color:#fff; }

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;
  padding:48px 0 52px;
  color:#fff;
  background-image:linear-gradient(180deg, rgba(6,52,42,.90), rgba(10,21,18,.95)), url('/assets/images/backpic/back-2.png');
  background-size:cover, cover;
  background-position:center, center;
  overflow:hidden;
}
.article-hero::after{
  content:"";
  position:absolute; left:0; right:0; bottom:0;
  height:1px;
  background:linear-gradient(90deg, transparent, var(--brand-300), transparent);
  opacity:.6;
}
.article-hero::before{
  content:"";
  position:absolute; top:0; left:0; width:4px; height:100%;
  background:var(--accent-500);
  opacity:.85;
}
.breadcrumb{
  display:flex; flex-wrap:wrap; align-items:center; gap:8px;
  font-size:13px; color:rgba(255,255,255,.7);
  margin-bottom:20px;
}
.breadcrumb a{ color:rgba(255,255,255,.85); }
.breadcrumb a:hover{ color:var(--brand-300); }
.breadcrumb .sep{ color:rgba(255,255,255,.4); }
.breadcrumb .current{ color:var(--brand-300); max-width:340px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.article-title{
  font-size:clamp(26px,3.6vw,40px);
  line-height:1.25;
  color:#fff;
  max-width:900px;
  letter-spacing:-.01em;
}
.article-meta{
  display:flex; flex-wrap:wrap; align-items:center; gap:14px;
  margin-top:22px;
  font-size:13px;
  color:rgba(255,255,255,.72);
}
.article-meta .badge{ background:rgba(255,255,255,.14); color:#fff; }
.meta-dot{ width:4px; height:4px; border-radius:50%; background:rgba(255,255,255,.4); }

/* ============ 文章主体 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,780px) 220px;
  gap:56px;
  justify-content:center;
  align-items:start;
  padding-top:56px;
  padding-bottom:var(--space-section);
}
.article-body{
  font-size:17px;
  line-height:1.9;
  color:var(--ink-600);
}
.article-body > * + *{ margin-top:1.2em; }
.article-body h2{
  position:relative;
  padding-left:16px;
  margin-top:1.9em;
  font-size:clamp(20px,2.4vw,26px);
  line-height:1.4;
  color:var(--ink-900);
}
.article-body h2::before{
  content:"";
  position:absolute; left:0; top:.36em;
  width:4px; height:18px; border-radius:2px;
  background:var(--brand-500);
}
.article-body h3{ margin-top:1.6em; font-size:19px; color:var(--ink-900); }
.article-body p{ margin:0 0 1.2em; }
.article-body a{ color:var(--brand-700); text-decoration:underline; text-underline-offset:3px; }
.article-body a:hover{ color:var(--accent-500); }
.article-body strong{ color:var(--ink-900); }
.article-body ul,.article-body ol{ margin:0 0 1.2em; padding-left:1.4em; }
.article-body ul li{ position:relative; list-style:none; margin-bottom:.4em; }
.article-body ul li::before{
  content:""; position:absolute; left:-1.1em; top:.78em;
  width:6px; height:6px; border-radius:50%; background:var(--brand-500);
}
.article-body ol{ list-style:decimal; }
.article-body ol li{ margin-bottom:.4em; }
.article-body ol li::marker{ color:var(--brand-700); font-weight:700; }
.article-body blockquote{
  margin:1.6em 0;
  padding:16px 22px;
  border-left:3px solid var(--brand-500);
  border-radius:0 10px 10px 0;
  background:var(--brand-50);
  color:var(--ink-900);
  font-size:16px;
}
.article-body img{ width:100%; height:auto; border-radius:10px; margin:1.6em 0; }
.article-body figure{ margin:1.6em 0; }
.article-body figure img{ margin:0; }
.article-body figcaption{ margin-top:8px; font-size:12px; color:var(--ink-400); text-align:center; }
.article-body table{
  width:100%; border-collapse:collapse; margin:1.6em 0;
  font-size:15px; background:#fff;
  border:1px solid var(--line); border-radius:10px; overflow:hidden;
}
.article-body th,.article-body td{ padding:12px 14px; border-bottom:1px solid var(--line); text-align:left; }
.article-body th{ background:var(--surface-50); color:var(--ink-900); font-weight:700; }
.article-body tr:last-child td{ border-bottom:0; }
.article-body code{
  background:var(--surface-50); border:1px solid var(--line);
  border-radius:6px; padding:2px 6px; font-size:14px; color:var(--brand-700);
}
.article-foot-actions{
  display:flex; flex-wrap:wrap; align-items:center; gap:20px;
  margin-top:44px; padding-top:28px;
  border-top:1px solid var(--line);
}
.empty-state{
  padding:48px 32px;
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:var(--surface-50);
  text-align:center;
}
.empty-state h2{ font-size:22px; margin-bottom:12px; }
.empty-state p{ margin-bottom:24px; color:var(--ink-400); }

/* ============ 目录 ============ */
.article-toc{
  position:sticky; top:96px;
  padding:20px 18px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  box-shadow:var(--shadow-card);
}
.article-toc h4{
  font-size:13px; letter-spacing:.08em; text-transform:uppercase;
  color:var(--ink-400); margin-bottom:14px;
}
.article-toc ol{ counter-reset:toc; }
.article-toc li{ margin-bottom:2px; }
.article-toc a{
  display:block;
  padding:7px 10px;
  border-radius:8px;
  font-size:13.5px;
  line-height:1.6;
  color:var(--ink-600);
  border-left:2px solid transparent;
  transition:background .2s ease, color .2s ease, border-color .2s ease;
}
.article-toc a:hover{ background:var(--brand-50); color:var(--brand-700); }
.article-toc a.is-current{
  color:var(--brand-700); font-weight:700;
  background:var(--brand-50);
  border-left-color:var(--brand-500);
}

/* ============ 相关推荐 ============ */
.related-section{ background:var(--surface-50); padding:var(--space-section) 0; }
.section-head{
  display:flex; align-items:flex-end; justify-content:space-between;
  gap:24px; margin-bottom:36px;
}
.section-head h2{ font-size:clamp(24px,3vw,32px); }
.section-head p{ margin-top:8px; font-size:14px; color:var(--ink-400); }
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.related-card{
  display:flex; flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .24s ease, box-shadow .24s ease, border-color .24s ease;
}
.related-card:hover{ transform:translateY(-3px); box-shadow:var(--shadow-float); border-color:var(--brand-300); }
.related-thumb{ aspect-ratio:16/9; overflow:hidden; background:var(--surface-50); }
.related-thumb img{ width:100%; height:100%; object-fit:cover; transition:transform .5s ease; }
.related-card:hover .related-thumb img{ transform:scale(1.04); }
.related-body{ padding:20px 22px 22px; display:flex; flex-direction:column; gap:10px; flex:1; }
.related-body h3{ font-size:17px; line-height:1.5; transition:color .2s ease; }
.related-card:hover .related-body h3{ color:var(--brand-700); }
.related-body p{ font-size:14px; color:var(--ink-400); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.related-body time{ margin-top:auto; font-size:12.5px; color:var(--ink-400); }

/* ============ CTA ============ */
.cta-section{
  padding:var(--space-section) 0;
  background:var(--dark-900);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:"";
  position:absolute; top:0; left:0; width:6px; height:100%;
  background:var(--accent-500);
  opacity:.9;
}
.cta-inner{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  align-items:center;
  gap:40px;
}
.cta-inner h2{ color:#fff; font-size:clamp(22px,2.6vw,30px); }
.cta-inner p{ margin-top:14px; color:rgba(255,255,255,.7); font-size:15px; max-width:560px; }
.cta-actions{ display:flex; flex-wrap:wrap; gap:14px; justify-content:flex-end; }
.cta-actions .btn-ghost{ border-color:rgba(255,255,255,.4); color:#fff; }
.cta-actions .btn-ghost:hover{ background:rgba(255,255,255,.1); color:#fff; }

/* ============ 页脚 ============ */
.site-footer{ background:var(--dark-900); color:rgba(255,255,255,.68); padding-top:64px; }
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{ color:#fff; margin-bottom:16px; }
.footer-brand .brand:hover{ color:var(--brand-300); }
.footer-brand p{ font-size:14px; line-height:1.9; color:rgba(255,255,255,.6); max-width:320px; }
.footer-col h4{ color:#fff; font-size:15px; margin-bottom:18px; }
.footer-col ul li{ margin-bottom:11px; }
.footer-col a{ font-size:14px; color:rgba(255,255,255,.68); }
.footer-col a:hover{ color:var(--brand-300); }
.footer-col .plain{ font-size:14px; color:rgba(255,255,255,.6); }
.footer-bottom{
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:12px;
  padding:22px 40px 30px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;
  color:rgba(255,255,255,.5);
}
.footer-bottom p{ margin:0; }

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{ max-width:1080px; }
  .article-layout{ grid-template-columns:minmax(0,820px); gap:0; }
  .article-toc{ display:none; }
}
@media (max-width:1023px){
  .nav-side{ display:none; }
  .header-inner{ grid-template-columns:44px 1fr 44px; }
  .brand{ justify-self:center; }
  .nav-icon-btn{ display:inline-flex; justify-self:start; }
  .nav-toggle{ display:inline-flex; justify-self:end; }
  .related-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:32px; }
  .cta-inner{ grid-template-columns:1fr; }
  .cta-actions{ justify-content:flex-start; }
}
@media (max-width:767px){
  :root{ --space-section:56px; }
  .container{ padding:0 24px; }
  .footer-bottom{ padding:20px 24px 26px; }
  .brand-text{ font-size:17px; }
  .article-hero{ padding:36px 0 40px; }
  .article-layout{ padding-top:36px; padding-bottom:56px; }
  .article-body{ font-size:16px; }
  .breadcrumb .current{ max-width:180px; }
  .related-grid{ grid-template-columns:1fr; }
  .section-head{ flex-direction:column; align-items:flex-start; gap:14px; }
  .article-foot-actions{ flex-direction:column; align-items:stretch; }
  .article-foot-actions .btn{ width:100%; }
  .cta-actions{ flex-direction:column; }
  .cta-actions .btn{ width:100%; }
  .footer-grid{ grid-template-columns:1fr; gap:28px; }
  .empty-state{ padding:36px 20px; }
}
@media (max-width:479px){
  .article-title{ font-size:24px; }
  .article-meta{ gap:10px; font-size:12.5px; }
  .brand-text{ font-size:16px; }
  .brand-mark{ width:30px; height:30px; flex:0 0 30px; font-size:12px; }
}

/* roulang page: category1 */
:root{
  --brand-900:#06342A;
  --brand-700:#0B5F4C;
  --brand-500:#12A07E;
  --brand-300:#6FD3B6;
  --brand-50:#E9F6F1;
  --accent-500:#FF6A2B;
  --accent-600:#E85A1E;
  --accent-100:#FFE8DC;
  --danger:#D9483B;
  --ink-900:#0C1211;
  --ink-600:#4A5654;
  --ink-400:#7C8A87;
  --line:#E3EBE8;
  --surface:#FFFFFF;
  --surface-50:#F5F8F7;
  --dark-900:#0A1512;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --shadow-card:0 1px 2px rgba(12,18,17,.06);
  --shadow-lift:0 14px 32px -14px rgba(6,52,42,.25);
  --container:1240px;
  --gutter:40px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink-600);background:var(--surface);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--ink-900);line-height:1.25;font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.6vw,52px);line-height:1.15}
h2{font-size:clamp(24px,3vw,36px)}
h3{font-size:20px}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
img{max-width:100%;height:auto;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 28px -20px rgba(6,52,42,.65);background:#fff}
.header-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:72px;gap:16px;position:relative}
.nav-side{display:flex;align-items:center;gap:28px}
.nav-left{grid-column:1;justify-content:flex-start}
.nav-right{grid-column:3;justify-content:flex-end}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;color:var(--ink-600);white-space:nowrap;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:3px;border-radius:2px;
  background:var(--accent-500);transform:scaleX(0);transform-origin:center;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--brand-700)}
.nav-link:hover::after{transform:scaleX(.5)}
.nav-link.is-active{color:var(--ink-900);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{grid-column:2;justify-self:center;display:inline-flex;align-items:center;gap:10px;color:inherit}
.brand:hover{color:inherit}
.brand-mark{
  width:34px;height:34px;border-radius:9px;flex:0 0 34px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#fff;font-size:13px;font-weight:800;letter-spacing:.5px;
}
.brand-text{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.nav-toggle{
  display:none;grid-column:3;justify-self:end;
  width:42px;height:42px;border-radius:10px;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--line);background:#fff;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .22s ease,opacity .22s ease}
.nav-toggle:hover{border-color:var(--brand-300);background:var(--brand-50)}
.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-menu{display:none}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:60px 0 72px;
  color:#fff;
  background-color:var(--brand-900);
  background-image:linear-gradient(180deg,rgba(6,52,42,.88) 0%,rgba(8,32,26,.92) 60%,rgba(10,21,18,.97) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;right:-60px;top:40px;width:280px;height:280px;
  border:1px solid rgba(111,211,182,.28);border-radius:50%;pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px}
.breadcrumb a{color:rgba(255,255,255,.78)}
.breadcrumb a:hover{color:var(--brand-300)}
.breadcrumb .sep{color:rgba(255,255,255,.35)}
.breadcrumb .current{color:#fff;font-weight:600}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.1em;font-weight:700;
  color:var(--brand-300);text-transform:uppercase;
  padding:7px 14px;border:1px solid rgba(111,211,182,.36);border-radius:999px;
  background:rgba(18,160,126,.14);margin-bottom:20px;
}
.page-hero h1{color:#fff;max-width:19em;margin-bottom:20px}
.hero-lead{max-width:62ch;font-size:16px;line-height:1.9;color:rgba(255,255,255,.78);margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;line-height:1;white-space:nowrap;
  transition:transform .18s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn i{font-size:13px;transition:transform .2s ease}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 12px 26px -14px rgba(255,106,43,.75)}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px)}
.btn-primary:hover i{transform:translateX(3px)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{border:1.5px solid var(--brand-500);color:#fff;background:rgba(255,255,255,.04)}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);border-color:var(--brand-50);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-outline{border:1.5px solid var(--brand-500);color:var(--brand-700);background:#fff}
.btn-outline:hover{background:var(--brand-50);transform:translateY(-1px)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:700;color:var(--brand-700);
}
.btn-link i{transition:transform .2s ease}
.btn-link:hover{color:var(--brand-500)}
.btn-link:hover i{transform:translateX(3px)}
.trust-row{display:flex;flex-wrap:wrap;gap:14px 30px}
.trust-row li{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72)}
.trust-row i{color:var(--brand-300)}

/* ============ Stat band ============ */
.stat-band{position:relative;background:var(--dark-900);padding:56px 0 60px;color:#fff;overflow:hidden}
.stat-band::before{content:"";position:absolute;top:0;left:0;width:84px;height:4px;background:var(--accent-500)}
.stat-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.04;
  background-image:repeating-linear-gradient(180deg,rgba(255,255,255,.8) 0 1px,transparent 1px 44px);
}
.stat-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{padding-left:20px;border-left:1px solid rgba(255,255,255,.12)}
.stat-num{
  display:block;font-size:clamp(34px,4vw,52px);font-weight:800;letter-spacing:-.02em;line-height:1.05;
  color:#fff;font-variant-numeric:tabular-nums;
}
.stat-num.accent{color:var(--accent-500)}
.stat-num .unit{font-size:.5em;font-weight:700;margin-left:3px;color:rgba(255,255,255,.6)}
.stat-num.accent .unit{color:var(--accent-500)}
.stat-label{display:block;margin-top:10px;font-size:13.5px;color:rgba(255,255,255,.62)}

/* ============ Layout with anchor nav ============ */
.page-body{padding:88px 0 0}
.layout-sidebar{display:grid;grid-template-columns:240px minmax(0,1fr);gap:56px;align-items:start}
.anchor-wrap{position:sticky;top:100px}
.anchor-title{font-size:12.5px;letter-spacing:.12em;color:var(--ink-400);font-weight:700;margin-bottom:10px;text-transform:uppercase}
.anchor-nav{border-top:1px solid var(--line);padding-top:8px}
.anchor-nav a{
  display:block;padding:10px 0 10px 14px;border-left:2px solid transparent;
  font-size:14px;color:var(--ink-600);transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.anchor-nav a:hover{color:var(--brand-700);border-left-color:var(--brand-300);background:var(--surface-50)}
.content-main{min-width:0}
.content-main > section + section{margin-top:72px}

/* ============ Blocks ============ */
.block h2{margin-bottom:18px}
.block h2 .tag-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent-500);margin-right:10px;vertical-align:middle}
.lead-text{font-size:16.5px;color:var(--ink-600)}
.figure-block{margin:26px 0 0}
.figure-block img{width:100%;border-radius:12px;border:1px solid var(--line);box-shadow:var(--shadow-card)}
.figure-block figcaption{margin-top:12px;font-size:12.5px;color:var(--ink-400);line-height:1.7}

/* ============ Data comparison rows ============ */
.data-panel{
  margin-top:26px;padding:28px 26px 20px;background:var(--surface-50);
  border:1px solid var(--line);border-radius:var(--radius-card);
}
.data-panel-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:18px}
.data-panel-head h3{margin:0;font-size:17px}
.data-panel-head span{font-size:13px;color:var(--ink-400)}
.sc-row{display:grid;grid-template-columns:1fr 140px 1fr;align-items:center;gap:14px;padding:9px 0}
.sc-side{display:flex;align-items:center;gap:10px;min-width:0}
.sc-bar{position:relative;flex:1;height:10px;border-radius:6px;background:#DEE8E5;overflow:hidden;min-width:40px}
.sc-bar i{position:absolute;top:0;bottom:0;display:block;border-radius:6px;width:var(--w);transition:width .5s ease}
.sc-side.left .sc-bar i{right:0;background:var(--brand-500)}
.sc-side.right .sc-bar i{left:0;background:var(--accent-500)}
.sc-val{font-size:15px;font-weight:800;color:var(--ink-900);font-variant-numeric:tabular-nums;white-space:nowrap}
.sc-name{text-align:center;font-size:13px;color:var(--ink-400);white-space:nowrap}
.data-note{margin-top:18px;font-size:12.5px;color:var(--ink-400)}

/* ============ Feature cards ============ */
.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:26px}
.feature-card{
  padding:26px 24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:var(--brand-300)}
.feature-icon{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand-700);font-size:17px;margin-bottom:16px;
}
.feature-card h3{font-size:18px;margin-bottom:10px}
.feature-card p{font-size:14.5px;color:var(--ink-600);margin-bottom:14px}

/* ============ Scenario cards ============ */
.scenario-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:26px}
.scenario-card{
  position:relative;padding:26px 22px;border-radius:var(--radius-card);
  background:linear-gradient(180deg,#fff,#F9FCFB);border:1px solid var(--line);
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.scenario-card::before{content:"";position:absolute;left:22px;top:0;width:34px;height:3px;border-radius:0 0 3px 3px;background:var(--accent-500)}
.scenario-card:hover{border-color:var(--brand-300);box-shadow:var(--shadow-lift);transform:translateY(-3px)}
.scenario-card h3{font-size:17px;margin:14px 0 10px}
.scenario-card p{font-size:14px;color:var(--ink-600)}

/* ============ Steps ============ */
.step-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:26px}
.step-item{
  display:flex;gap:18px;padding:24px 22px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-card);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.step-item:hover{border-color:var(--brand-300);box-shadow:var(--shadow-card)}
.step-num{
  font-size:34px;font-weight:800;line-height:1;color:var(--brand-300);
  font-variant-numeric:tabular-nums;flex:0 0 auto;
}
.step-item h3{font-size:16.5px;margin-bottom:8px}
.step-item p{font-size:14px;color:var(--ink-600)}

/* ============ Compare ============ */
.compare-grid{display:grid;grid-template-columns:1fr 1px 1fr;gap:32px;margin-top:26px;align-items:start}
.compare-divider{background:var(--line);align-self:stretch}
.compare-col h3{font-size:16px;margin-bottom:6px}
.compare-col .compare-sub{font-size:13px;color:var(--ink-400);margin-bottom:20px}
.compare-row{margin-bottom:16px}
.compare-row .cr-top{display:flex;justify-content:space-between;font-size:13.5px;color:var(--ink-600);margin-bottom:7px}
.compare-row .cr-top b{font-weight:700;color:var(--ink-900);font-variant-numeric:tabular-nums}
.cr-track{height:9px;border-radius:6px;background:#E7EFEC;overflow:hidden}
.cr-track i{display:block;height:100%;border-radius:6px;width:var(--w)}
.compare-col.muted .cr-track i{background:var(--ink-400)}
.compare-col.strong .cr-track i{background:var(--brand-500)}

/* ============ FAQ ============ */
.faq-list{max-width:840px;margin-top:22px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:20px 8px 20px 18px;
  font-size:16.5px;font-weight:700;color:var(--ink-900);line-height:1.6;
  transition:color .2s ease,background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:2px;
  background:transparent;transition:background .22s ease;
}
.faq-item summary:hover{color:var(--brand-700)}
.faq-item summary i{
  flex:0 0 auto;margin-top:5px;font-size:14px;color:var(--ink-400);
  transition:transform .26s ease,color .22s ease;
}
.faq-item[open] summary{color:var(--brand-700)}
.faq-item[open] summary::before{background:var(--accent-500)}
.faq-item[open] summary i{transform:rotate(45deg);color:var(--accent-500)}
.faq-answer{padding:0 8px 22px 18px;max-width:70ch}
.faq-answer p{font-size:15px;line-height:1.8;color:var(--ink-600)}

/* ============ CTA form ============ */
.cta-section{background:var(--brand-50);padding:80px 0;margin-top:88px}
.cta-card{
  max-width:720px;margin:0 auto;background:#fff;border:1px solid var(--line);
  border-radius:18px;box-shadow:var(--shadow-lift);padding:40px 40px 36px;
}
.cta-card h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:12px}
.cta-card .cta-sub{font-size:15px;color:var(--ink-600);margin-bottom:28px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px;min-width:0}
.field-full{grid-column:1 / -1}
.field label{font-size:13.5px;font-weight:700;color:var(--ink-900)}
.field .req{color:var(--accent-500)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-input);
  background:#fff;font-size:15px;color:var(--ink-900);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:112px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-400)}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--brand-300)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px var(--brand-50);
}
.field select{
  appearance:none;-webkit-appearance:none;padding-right:40px;
  background-image:linear-gradient(45deg,transparent 50%,var(--ink-400) 50%),linear-gradient(135deg,var(--ink-400) 50%,transparent 50%);
  background-position:calc(100% - 21px) 50%,calc(100% - 15px) 50%;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;cursor:pointer;
}
.field .field-error{font-size:12px;color:var(--danger);display:none}
.field.has-error input,.field.has-error select{border-color:var(--danger)}
.field.has-error .field-error{display:block}
.checkbox{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--ink-600);line-height:1.7}
.checkbox input{width:16px;height:16px;margin-top:5px;accent-color:var(--brand-500);flex:0 0 16px}
.form-actions{display:flex;align-items:center;gap:16px;margin-top:26px;flex-wrap:wrap}
.form-actions .btn{min-width:180px}
.form-hint{font-size:13px;color:var(--ink-400)}
.alert{border-radius:var(--radius-input);padding:14px 16px;font-size:14px;margin-bottom:22px;display:none;align-items:center;gap:10px}
.alert.is-visible{display:flex}
.alert-success{border:1.5px solid var(--brand-500);background:var(--brand-50);color:var(--brand-700)}
.alert-error{border:1.5px solid var(--danger);background:#FDF1EF;color:var(--danger)}

/* ============ Footer ============ */
.site-footer{background:var(--dark-900);color:rgba(255,255,255,.7);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:18px;display:inline-flex}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.62);max-width:36ch}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:13.5px;color:rgba(255,255,255,.7)}
.footer-col a:hover{color:var(--brand-300)}
.footer-col .plain{font-size:13.5px;color:rgba(255,255,255,.62)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.1);padding-top:22px;padding-bottom:26px;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom p{margin:0}

/* ============ Breakpoints ============ */
@media (max-width:1279px){
  .container{padding:0 32px}
  .layout-sidebar{gap:40px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .header-inner{height:66px}
  .nav-side{gap:20px}
  .nav-link{font-size:14.5px}
  .page-hero{padding:48px 0 58px}
  .page-body{padding-top:60px}
  .layout-sidebar{grid-template-columns:1fr;gap:32px}
  .anchor-wrap{position:static}
  .anchor-nav{
    display:flex;gap:10px;overflow-x:auto;border-top:0;padding:0 0 6px;
    scrollbar-width:thin;
  }
  .anchor-nav a{
    flex:0 0 auto;border:1px solid var(--line);border-radius:999px;
    padding:8px 16px;font-size:13.5px;background:#fff;
  }
  .anchor-nav a:hover{border-color:var(--brand-300);background:var(--brand-50)}
  .anchor-title{display:block;margin-bottom:10px}
  .content-main > section + section{margin-top:56px}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:28px 20px}
  .feature-grid{grid-template-columns:1fr}
  .scenario-grid{grid-template-columns:1fr}
  .step-list{grid-template-columns:1fr}
  .compare-grid{grid-template-columns:1fr;gap:28px}
  .compare-divider{display:none}
  .cta-section{margin-top:64px;padding:60px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .nav-side{display:none}
  .nav-toggle{display:flex}
  .header-inner{grid-template-columns:1fr auto 1fr}
  .brand{grid-column:2}
  .mobile-menu{
    display:block;max-height:0;overflow:hidden;background:#fff;
    transition:max-height .3s ease;
  }
  .mobile-menu.is-open{max-height:80vh;overflow-y:auto;border-top:1px solid var(--line);box-shadow:var(--shadow-lift)}
  .mobile-menu a{
    display:flex;align-items:center;height:52px;padding:0 24px;
    border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-600);
  }
  .mobile-menu a.is-active{color:var(--brand-700);font-weight:700;background:var(--brand-50);box-shadow:inset 3px 0 0 var(--accent-500)}
  .page-hero{padding:40px 0 48px}
  .page-hero::after{display:none}
  .hero-lead{font-size:15px}
  .hero-actions .btn{flex:1 1 auto;min-width:150px}
  .trust-row{flex-direction:column;gap:10px}
  .stat-band{padding:44px 0}
  .stat-num{font-size:clamp(30px,9vw,40px)}
  .data-panel{padding:22px 18px 16px}
  .sc-row{grid-template-columns:1fr 104px 1fr;gap:10px}
  .sc-val{font-size:13.5px}
  .sc-name{font-size:12px}
  .cta-card{padding:28px 22px 26px}
  .form-grid{grid-template-columns:1fr}
  .form-actions .btn{width:100%}
  .form-actions{flex-direction:column;align-items:stretch}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .brand-text{font-size:15px}
  .brand-mark{width:30px;height:30px;flex:0 0 30px;font-size:12px}
  h1{font-size:clamp(26px,7.6vw,32px)}
  .eyebrow{font-size:12px;padding:6px 12px}
  .btn{height:46px;padding:0 18px;font-size:14.5px}
  .sc-row{grid-template-columns:1fr 92px 1fr;gap:8px}
  .sc-val{font-size:12.5px}
  .faq-item summary{font-size:15.5px;padding:18px 4px 18px 16px}
  .faq-answer{padding-left:16px}
  .feature-card,.scenario-card,.step-item{padding:22px 18px}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:22px 16px}
  .stat-item{padding-left:14px}
}

/* roulang page: category2 */
:root{
  --brand-900:#06342A;
  --brand-700:#0B5F4C;
  --brand-500:#12A07E;
  --brand-300:#6FD3B6;
  --brand-50:#E9F6F1;
  --accent-500:#FF6A2B;
  --accent-600:#E85A1E;
  --accent-100:#FFE8DC;
  --danger:#D9483B;
  --ink-900:#0C1211;
  --ink-600:#4A5654;
  --ink-400:#7C8A87;
  --line:#E3EBE8;
  --surface:#FFFFFF;
  --surface-50:#F5F8F7;
  --dark-900:#0A1512;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-badge:999px;
  --shadow-card:0 1px 2px rgba(12,18,17,.06);
  --shadow-float:0 14px 32px -14px rgba(6,52,42,.25);
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",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;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-500);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:800;line-height:1.3;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px -14px rgba(6,52,42,.45);}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px;position:relative;}
.nav-side{display:flex;align-items:center;gap:26px;flex:1 1 0;min-width:0;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--ink-600);
  padding:24px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:13px;height:3px;width:0;
  background:var(--accent-500);border-radius:2px;transition:width .22s ease;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--brand-700);font-weight:700;}
.nav-link.is-active::after{width:100%;}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand-500),var(--brand-900));
  color:#fff;font-size:13px;font-weight:800;letter-spacing:.6px;
  display:grid;place-items:center;
}
.brand-text{font-size:18px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;}

.nav-toggle{
  display:none;
  width:42px;height:42px;padding:0;
  border:1px solid var(--line);border-radius:10px;background:#fff;
  cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:var(--brand-300);background:var(--brand-50);}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .25s ease,opacity .25s ease;}
.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-menu{
  display:none;flex-direction:column;
  border-top:1px solid var(--line);background:#fff;
  max-height:80vh;overflow-y:auto;
}
.mobile-menu a{
  display:flex;align-items:center;height:52px;padding:0 24px;
  border-bottom:1px solid var(--line);
  color:var(--ink-900);font-size:15px;
}
.mobile-menu a:hover{background:var(--surface-50);}
.mobile-menu a.is-active{color:var(--brand-700);font-weight:700;box-shadow:inset 3px 0 0 var(--accent-500);}
.mobile-menu.is-open{display:flex;}

/* ---------- Hero ---------- */
.page-hero{position:relative;overflow:hidden;color:#fff;background:var(--brand-900);}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.55;
}
.page-hero .hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(6,52,42,.88) 0%,rgba(6,52,42,.76) 42%,rgba(10,21,18,.95) 100%);
}
.page-hero .hero-slash{
  position:absolute;left:0;top:0;width:6px;height:100%;
  background:linear-gradient(180deg,var(--accent-500),rgba(255,106,43,0));
}
.page-hero .container{position:relative;z-index:2;padding-top:56px;padding-bottom:64px;}

.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:22px;}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(255,255,255,.4);}
.breadcrumb .current{color:var(--brand-300);}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--radius-badge);
  background:rgba(111,211,182,.14);
  border:1px solid rgba(111,211,182,.4);
  color:var(--brand-300);
  font-size:13px;font-weight:600;letter-spacing:.02em;
  margin-bottom:20px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500);}

.page-hero h1{
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
  color:#fff;
  max-width:820px;
  margin-bottom:20px;
}
.page-hero .hero-lead{
  max-width:760px;
  font-size:16px;
  line-height:1.85;
  color:rgba(255,255,255,.78);
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

.hero-facts{
  display:flex;flex-wrap:wrap;gap:26px;
  margin-top:34px;padding-top:26px;
  border-top:1px solid rgba(255,255,255,.14);
}
.hero-fact{display:flex;align-items:center;gap:9px;font-size:13px;color:rgba(255,255,255,.72);}
.hero-fact b{color:#fff;font-weight:700;font-variant-numeric:tabular-nums;}
.hero-fact i{width:6px;height:6px;border-radius:50%;background:var(--brand-300);display:block;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 10px 22px -14px rgba(255,106,43,.9);}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-outline{background:transparent;border-color:var(--brand-500);color:var(--brand-700);}
.btn-outline:hover{background:var(--brand-50);color:var(--brand-700);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.45);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-block{width:100%;}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-weight:700;font-size:14px;color:var(--brand-700);
}
.link-arrow::after{content:"→";transition:transform .2s ease;}
.link-arrow:hover{color:var(--brand-500);}
.link-arrow:hover::after{transform:translateX(3px);}

/* ---------- Anchor nav ---------- */
.anchor-bar{
  position:sticky;top:72px;z-index:50;
  background:rgba(245,248,247,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;gap:6px;overflow-x:auto;padding:10px 0;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  flex:0 0 auto;
  padding:8px 16px;border-radius:var(--radius-badge);
  font-size:14px;font-weight:600;color:var(--ink-600);
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.anchor-inner a:hover{background:#fff;border-color:var(--brand-300);color:var(--brand-700);}

/* ---------- Sections ---------- */
.section{padding:88px 0;}
.section-tight{padding:56px 0;}
.section-alt{background:var(--surface-50);}
.section-dark{background:var(--dark-900);color:rgba(255,255,255,.78);}
.section-dark h2{color:#fff;}
.section-dark p{color:rgba(255,255,255,.72);}

.section-head{max-width:760px;margin-bottom:44px;}
.section-head .mark{
  display:inline-block;width:36px;height:4px;border-radius:2px;
  background:var(--accent-500);margin-bottom:16px;
}
.section-head h2{font-size:clamp(24px,3vw,36px);letter-spacing:-.015em;margin-bottom:14px;}
.section-head p{font-size:16px;line-height:1.85;}

.section-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:44px;}
.section-head-row .section-head{margin-bottom:0;}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step-card{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 24px 26px;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-float);border-color:var(--brand-300);}
.step-card::before{
  content:"";position:absolute;left:24px;top:0;width:26px;height:4px;border-radius:0 0 4px 4px;
  background:var(--accent-500);
}
.step-num{
  font-size:44px;font-weight:800;line-height:1;letter-spacing:-.03em;
  color:var(--brand-50);
  font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.step-card:hover .step-num{color:var(--accent-100);}
.step-card h3{font-size:19px;margin-bottom:10px;}
.step-card p{font-size:14.5px;line-height:1.8;color:var(--ink-600);margin-bottom:14px;}
.step-meta{font-size:13px;color:var(--ink-400);display:flex;align-items:center;gap:8px;}
.step-meta b{color:var(--brand-700);font-variant-numeric:tabular-nums;}

/* ---------- Feature rows ---------- */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.feature-row + .feature-row{margin-top:88px;}
.feature-row.is-reverse .feature-media{order:2;}
.feature-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-float);
  aspect-ratio:16/10;background:var(--surface-50);
}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.feature-row:hover .feature-media img{transform:scale(1.03);}
.feature-media .tag{
  position:absolute;left:14px;top:14px;
  padding:5px 12px;border-radius:var(--radius-badge);
  background:rgba(6,52,42,.85);color:#fff;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.feature-body h2,.feature-body h3{font-size:clamp(22px,2.4vw,30px);margin-bottom:16px;letter-spacing:-.015em;}
.feature-body p{font-size:16px;line-height:1.85;margin-bottom:18px;}
.check-list{display:grid;gap:12px;}
.check-list li{
  position:relative;padding-left:26px;font-size:15px;line-height:1.75;color:var(--ink-600);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:9px;height:9px;border-radius:3px;
  background:var(--brand-500);
}

/* ---------- Data bars ---------- */
.bar-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:12px 26px;box-shadow:var(--shadow-card);
}
.bar-row{
  display:grid;grid-template-columns:minmax(150px,1fr) minmax(90px,1.1fr) minmax(200px,1.6fr);
  gap:22px;align-items:center;
  padding:20px 0;border-bottom:1px solid var(--line);
}
.bar-row:last-child{border-bottom:none;}
.bar-label{font-size:15px;font-weight:700;color:var(--ink-900);}
.bar-track{height:8px;border-radius:999px;background:var(--surface-50);overflow:hidden;}
.bar-track i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand-500),var(--brand-300));}
.bar-track.is-warn i{background:linear-gradient(90deg,var(--accent-500),#FFA97D);}
.bar-desc{font-size:14px;line-height:1.7;color:var(--ink-600);}
.bar-value{font-variant-numeric:tabular-nums;font-weight:700;color:var(--brand-700);}

/* ---------- Signal table ---------- */
.signal-list{display:grid;gap:14px;}
.signal-row{
  display:grid;grid-template-columns:minmax(220px,1fr) 1.5fr;
  gap:24px;align-items:start;
  padding:22px 26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.signal-row:hover{border-color:var(--brand-300);box-shadow:var(--shadow-float);transform:translateX(3px);}
.signal-code{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;color:var(--ink-900);}
.signal-code::before{content:"";width:3px;height:16px;border-radius:2px;background:var(--accent-500);flex:0 0 auto;}
.signal-row p{font-size:14.5px;line-height:1.8;color:var(--ink-600);margin:0;}

/* ---------- Cards grid ---------- */
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.info-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 24px;box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.info-card:hover{transform:translateY(-4px);border-color:var(--brand-300);box-shadow:var(--shadow-float);}
.info-card .ico{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand-700);
  font-weight:800;font-size:16px;margin-bottom:18px;
  font-variant-numeric:tabular-nums;
}
.info-card h3{font-size:18px;margin-bottom:10px;}
.info-card p{font-size:14.5px;line-height:1.8;color:var(--ink-600);}

/* ---------- Metrics strip ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.metric-card{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-card);
  padding:26px 22px;
  transition:border-color .25s ease,background .25s ease;
}
.metric-card:hover{border-color:rgba(111,211,182,.5);background:rgba(255,255,255,.06);}
.metric-value{
  font-size:clamp(34px,4vw,52px);font-weight:800;line-height:1.05;
  letter-spacing:-.02em;color:#fff;font-variant-numeric:tabular-nums;
}
.metric-value.is-accent{color:var(--accent-500);}
.metric-label{font-size:14px;color:rgba(255,255,255,.68);margin-top:10px;}
.metric-badge{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  padding:3px 10px;border-radius:var(--radius-badge);
  font-size:12px;font-weight:600;
  background:rgba(111,211,182,.14);color:var(--brand-300);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{margin:0;font-size:17px;font-weight:700;}
.faq-trigger{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0 24px 0;
  background:none;border:none;cursor:pointer;text-align:left;
  font-size:17px;font-weight:700;color:var(--ink-900);
  transition:color .2s ease,padding-left .25s ease;
  position:relative;
}
.faq-trigger::before{
  content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:22px;background:var(--accent-500);border-radius:2px;
  transition:transform .25s ease;transform-origin:center;
}
.faq-item.is-open .faq-trigger::before{transform:translateY(-50%) scaleY(1);}
.faq-trigger:hover{color:var(--brand-700);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1.5px solid var(--line);position:relative;
  transition:transform .25s ease,border-color .25s ease,background .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-700);
  transform:translate(-50%,-50%);border-radius:2px;
}
.faq-icon::before{width:11px;height:2px;}
.faq-icon::after{width:2px;height:11px;transition:opacity .2s ease;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:var(--brand-300);background:var(--brand-50);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-panel{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease;}
.faq-item.is-open .faq-panel{grid-template-rows:1fr;}
.faq-panel-inner{overflow:hidden;}
.faq-panel-inner p{
  padding:0 46px 24px 0;
  font-size:15px;line-height:1.85;color:var(--ink-600);margin:0;
}

/* ---------- CTA / Form ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--brand-50);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-band .cta-slash{position:absolute;left:0;top:0;width:6px;height:100%;background:var(--accent-500);}
.form-card{
  max-width:720px;margin:0 auto;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:40px 40px 36px;
  box-shadow:var(--shadow-float);
  position:relative;z-index:2;
}
.form-card h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.form-card .form-lead{font-size:15px;color:var(--ink-600);margin-bottom:28px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:600;color:var(--ink-900);}
.field input,.field select,.field textarea{
  width:100%;
  padding:12px 14px;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--surface-50);
  font-size:15px;color:var(--ink-900);
  transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:112px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-400);}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--brand-300);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);background:#fff;
  box-shadow:0 0 0 3px rgba(18,160,126,.14);
}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--ink-600);line-height:1.7;}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand-500);flex:0 0 auto;}
.form-actions{margin-top:24px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.form-note{font-size:13px;color:var(--ink-400);}

.notice{
  display:none;margin-top:20px;padding:14px 18px;border-radius:var(--radius-btn);
  font-size:14.5px;line-height:1.7;
}
.notice.is-ok{display:block;background:var(--brand-50);border:1px solid var(--brand-300);color:var(--brand-900);}
.notice.is-error{display:block;background:#FDF1F0;border:1px solid var(--danger);color:#9C2E22;}
.field-error{font-size:12.5px;color:var(--danger);display:none;}
.field.has-error input,.field.has-error textarea,.field.has-error select{border-color:var(--danger);background:#FDF1F0;}
.field.has-error .field-error{display:block;}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark-900);color:rgba(255,255,255,.66);padding-top:64px;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:13.5px;line-height:1.85;margin-top:18px;color:rgba(255,255,255,.6);max-width:340px;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a,.footer-col .plain{font-size:13.5px;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:var(--brand-300);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 40px 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,.5);margin:0;}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .container{max-width:1080px;}
}
@media (max-width:1023px){
  .container{padding:0 32px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .feature-row{gap:36px;}
  .anchor-bar{top:72px;}
}
@media (max-width:767px){
  .container{padding:0 24px;}
  .nav-side{display:none;}
  .header-inner{justify-content:center;}
  .nav-toggle{display:flex;position:absolute;right:0;top:50%;transform:translateY(-50%);}
  .brand-text{font-size:16px;}

  .page-hero .container{padding-top:36px;padding-bottom:48px;}
  .hero-actions .btn{width:100%;}
  .hero-facts{gap:16px;}
  .hero-fact{font-size:12.5px;}

  .section{padding:56px 0;}
  .section-tight{padding:40px 0;}
  .anchor-bar{top:72px;}

  .step-card{padding:26px 20px 22px;}
  .step-num{font-size:36px;}

  .feature-row{grid-template-columns:1fr;gap:24px;}
  .feature-row.is-reverse .feature-media{order:0;}
  .feature-row + .feature-row{margin-top:56px;}

  .bar-panel{padding:6px 18px;}
  .bar-row{grid-template-columns:1fr;gap:10px;padding:18px 0;}
  .signal-row{grid-template-columns:1fr;gap:10px;padding:20px;}

  .card-grid{grid-template-columns:1fr;}
  .metric-grid{grid-template-columns:1fr 1fr;gap:14px;}
  .metric-card{padding:20px 16px;}
  .metric-value{font-size:32px;}

  .faq-trigger{font-size:16px;padding:20px 0;}
  .faq-trigger::before{left:-12px;}
  .faq-panel-inner p{padding:0 0 22px;}

  .form-card{padding:28px 22px 26px;}
  .form-grid{grid-template-columns:1fr;}
  .form-actions .btn{width:100%;}

  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;padding:20px 24px 26px;}
}
@media (max-width:479px){
  .container{padding:0 18px;}
  .page-hero h1{font-size:27px;}
  .hero-facts{flex-direction:column;gap:10px;}
  .metric-grid{gap:12px;}
  .metric-value{font-size:28px;}
  .anchor-inner a{font-size:13px;padding:7px 13px;}
}

/* roulang page: category3 */
:root{
  --brand-900:#06342A;
  --brand-700:#0B5F4C;
  --brand-500:#12A07E;
  --brand-300:#6FD3B6;
  --brand-50:#E9F6F1;
  --accent-500:#FF6A2B;
  --accent-hover:#E85A1E;
  --accent-100:#FFE8DC;
  --neg:#D9483B;
  --pos:#12A07E;
  --ink-900:#0C1211;
  --ink-600:#4A5654;
  --ink-400:#7C8A87;
  --line:#E3EBE8;
  --surface:#FFFFFF;
  --surface-50:#F5F8F7;
  --dark-900:#0A1512;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(12,18,17,.06);
  --shadow-float:0 14px 32px -14px rgba(6,52,42,.25);
  --container:1240px;
  --gap-section:88px;
  --font-stack:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",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;
  font-family:var(--font-stack);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-500);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
input:focus-visible,select:focus-visible,textarea:focus-visible{outline:none;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{
  box-shadow:0 8px 22px -16px rgba(6,52,42,.45);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:18px;
  min-height:72px;
}
.nav-side{display:flex;align-items:center;gap:28px;}
.nav-left{justify-content:flex-end;}
.nav-right{justify-content:flex-start;}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--ink-600);
  padding:26px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:14px;
  height:3px;
  border-radius:2px;
  background:var(--accent-500);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--brand-700);}
.nav-link:hover::after{transform:scaleX(.55);}
.nav-link.is-active{color:var(--ink-900);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink-900);
  font-weight:800;
  white-space:nowrap;
}
.brand:hover{color:var(--ink-900);}
.brand-mark{
  width:36px;
  height:36px;
  border-radius:10px;
  display:grid;
  place-items:center;
  font-size:13px;
  letter-spacing:.5px;
  color:#fff;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  box-shadow:var(--shadow-card);
}
.brand-text{font-size:17px;letter-spacing:-.01em;}

.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:4px;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:var(--brand-300);background:var(--brand-50);}
.nav-toggle span{width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .25s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.mobile-menu{
  max-height:0;
  overflow:hidden;
  background:#fff;
  border-top:1px solid transparent;
  transition:max-height .32s ease,border-color .32s ease;
}
.mobile-menu.open{
  max-height:80vh;
  overflow-y:auto;
  border-top-color:var(--line);
}
.mobile-menu a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 24px;
  font-size:15px;
  color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.mobile-menu a:hover{background:var(--brand-50);color:var(--brand-700);}
.mobile-menu a.is-active{color:var(--brand-700);font-weight:700;box-shadow:inset 3px 0 0 var(--accent-500);}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:78px 0 72px;
  color:#fff;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,52,42,.9) 0%,rgba(6,52,42,.86) 45%,rgba(10,21,18,.96) 100%);
}
.page-hero::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(111,211,182,.55),transparent);
}
.page-hero .container{position:relative;z-index:2;}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.62);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.crumb a{color:rgba(255,255,255,.72);}
.crumb a:hover{color:var(--brand-300);}
.crumb span.sep{color:rgba(255,255,255,.35);}
.crumb .current{color:rgba(255,255,255,.9);}

.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--brand-300);
  background:rgba(18,160,126,.16);
  border:1px solid rgba(111,211,182,.35);
  margin-bottom:20px;
}
.hero-badge i{
  width:6px;height:6px;border-radius:50%;background:var(--accent-500);display:inline-block;
}
.page-hero h1{
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
  color:#fff;
  max-width:16em;
}
.page-hero .hero-sub{
  margin-top:18px;
  font-size:clamp(16px,1.6vw,19px);
  color:rgba(255,255,255,.86);
  max-width:44em;
}
.page-hero .hero-lead{
  margin-top:16px;
  font-size:15px;
  line-height:1.9;
  color:rgba(255,255,255,.66);
  max-width:52em;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.hero-tags a{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 16px;
  border-radius:999px;
  font-size:13px;
  color:rgba(255,255,255,.88);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.hero-tags a:hover{
  background:rgba(18,160,126,.28);
  border-color:var(--brand-300);
  color:#fff;
  transform:translateY(-1px);
}

/* ---------- Sections ---------- */
.section{padding:var(--gap-section) 0;}
.section-alt{background:var(--surface-50);}
.section-dark{
  background:var(--dark-900);
  color:#fff;
  position:relative;
  overflow:hidden;
}
.section-dark::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(180deg,rgba(255,255,255,.045) 0 1px,transparent 1px 44px);
  pointer-events:none;
}
.section-dark .container{position:relative;z-index:2;}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brand-700);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:4px;
  height:16px;
  border-radius:2px;
  background:var(--accent-500);
  transform:skewX(-14deg);
}
.section-dark .eyebrow{color:var(--brand-300);}

.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);
  line-height:1.3;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--ink-900);
  max-width:22em;
}
.section-dark .section-head h2{color:#fff;}
.section-head p{
  margin-top:12px;
  font-size:15px;
  color:var(--ink-400);
  max-width:46em;
}
.section-dark .section-head p{color:rgba(255,255,255,.6);}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand-700);
}
.text-link::after{
  content:"→";
  transition:transform .2s ease;
}
.text-link:hover{color:var(--brand-500);}
.text-link:hover::after{transform:translateX(3px);}
.section-dark .text-link{color:var(--brand-300);}

/* ---------- Quick cards ---------- */
.quick-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.quick-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.quick-card:hover{
  border-color:var(--brand-300);
  box-shadow:var(--shadow-float);
  transform:translateY(-3px);
}
.quick-card .thumb{
  position:relative;
  aspect-ratio:16/9;
  background:var(--brand-50);
  overflow:hidden;
}
.quick-card .thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.quick-card:hover .thumb img{transform:scale(1.04);}
.quick-card .thumb::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,52,42,0) 45%,rgba(6,52,42,.5) 100%);
}
.quick-card .body{
  padding:22px 22px 24px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.quick-card h3{
  font-size:18px;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:-.01em;
}
.quick-card p{
  font-size:14px;
  line-height:1.8;
  color:var(--ink-400);
}
.quick-card .text-link{margin-top:auto;font-size:14px;}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--brand-700);
  background:var(--brand-50);
  border:1px solid rgba(18,160,126,.18);
}
.badge-accent{
  color:#B8430F;
  background:var(--accent-100);
  border-color:rgba(255,106,43,.22);
}

/* ---------- FAQ ---------- */
.faq-block{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:8px 32px 12px;
  margin-bottom:32px;
}
.faq-block:last-child{margin-bottom:0;}
.faq-block-head{
  display:flex;
  align-items:center;
  gap:14px;
  padding:22px 0 18px;
  border-bottom:1px solid var(--line);
  flex-wrap:wrap;
}
.faq-block-head h3{
  font-size:20px;
  font-weight:700;
  color:var(--ink-900);
}
.faq-block-head .count{
  font-size:13px;
  color:var(--ink-400);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  position:relative;
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  padding:22px 0 22px 16px;
  background:none;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  color:var(--ink-900);
  transition:color .2s ease;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;
  top:22px;
  bottom:22px;
  width:3px;
  border-radius:2px;
  background:var(--accent-500);
  transform:scaleY(0);
  transform-origin:top;
  transition:transform .28s ease;
}
.faq-item.open .faq-q::before{transform:scaleY(1);}
.faq-q:hover{color:var(--brand-700);}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:22px;
  height:22px;
  margin-top:3px;
  transition:transform .3s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand-700);
  border-radius:2px;
}
.faq-icon::before{left:50%;top:3px;width:2px;height:16px;transform:translateX(-50%);}
.faq-icon::after{top:50%;left:3px;width:16px;height:2px;transform:translateY(-50%);}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-a p{
  padding:0 46px 22px 16px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-600);
}

/* ---------- Metrics strip ---------- */
.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-card);
  overflow:hidden;
}
.metric{
  background:var(--dark-900);
  padding:30px 26px;
}
.metric .num{
  font-size:clamp(34px,4vw,52px);
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--brand-300);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
}
.metric .num.accent{color:var(--accent-500);}
.metric .num small{font-size:16px;font-weight:700;margin-left:4px;letter-spacing:0;}
.metric .label{
  margin-top:12px;
  font-size:14px;
  color:rgba(255,255,255,.72);
}
.metric .note{
  margin-top:6px;
  font-size:13px;
  color:rgba(255,255,255,.42);
}

/* ---------- Support cards ---------- */
.support-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.support-card{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 28px 28px;
  box-shadow:var(--shadow-card);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.support-card::before{
  content:"";
  position:absolute;
  left:0;
  top:24px;
  bottom:24px;
  width:4px;
  border-radius:0 3px 3px 0;
  background:var(--brand-500);
  transform:skewY(-12deg);
}
.support-card:hover{
  border-color:var(--brand-300);
  box-shadow:var(--shadow-float);
  transform:translateY(-3px);
}
.support-card .ico{
  width:44px;
  height:44px;
  border-radius:12px;
  display:grid;
  place-items:center;
  font-size:18px;
  font-weight:800;
  color:var(--brand-700);
  background:var(--brand-50);
  margin-bottom:18px;
  font-variant-numeric:tabular-nums;
}
.support-card h3{
  font-size:18px;
  font-weight:700;
  color:var(--ink-900);
  margin-bottom:10px;
}
.support-card p{
  font-size:14px;
  line-height:1.8;
  color:var(--ink-400);
  margin-bottom:16px;
}
.support-card strong{color:var(--brand-700);font-weight:600;}

/* ---------- Form ---------- */
.form-section{
  background:var(--brand-50);
  padding:var(--gap-section) 0;
}
.form-card{
  max-width:720px;
  margin:0 auto;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-float);
  padding:40px 40px 36px;
}
.form-card h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:800;
  color:var(--ink-900);
  letter-spacing:-.01em;
}
.form-card .form-desc{
  margin-top:10px;
  font-size:14px;
  color:var(--ink-400);
}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px 20px;
  margin-top:26px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1/-1;}
.field label{
  font-size:14px;
  font-weight:600;
  color:var(--ink-900);
}
.field label .req{color:var(--neg);margin-left:2px;}
.field input,
.field select,
.field textarea{
  width:100%;
  border:1px solid var(--line);
  border-radius:10px;
  padding:12px 14px;
  color:var(--ink-900);
  background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:118px;resize:vertical;line-height:1.7;}
.field input::placeholder,
.field textarea::placeholder{color:#A9B4B1;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color:var(--brand-500);
  box-shadow:0 0 0 3px rgba(18,160,126,.15);
}
.field input.has-error,
.field select.has-error,
.field textarea.has-error{
  border-color:var(--neg);
  box-shadow:0 0 0 3px rgba(217,72,59,.12);
}
.field .err{
  display:none;
  font-size:12px;
  line-height:1.5;
  color:var(--neg);
}
.field .err.show{display:block;}

.check-row{
  display:flex;
  align-items:flex-start;
  gap:10px;
  grid-column:1/-1;
  margin-top:2px;
}
.check-row input{
  width:16px;
  height:16px;
  margin-top:5px;
  accent-color:var(--brand-500);
  flex:0 0 auto;
}
.check-row label{
  font-size:13px;
  line-height:1.7;
  color:var(--ink-400);
  font-weight:400;
}

.form-actions{
  grid-column:1/-1;
  display:flex;
  align-items:center;
  gap:18px;
  margin-top:8px;
  flex-wrap:wrap;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border:0;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  transition:background .2s ease,transform .15s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{
  background:var(--accent-500);
  color:#fff;
  box-shadow:0 10px 20px -12px rgba(255,106,43,.75);
}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);color:#fff;}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-primary:disabled{background:#D6DEDB;color:#8B9995;cursor:not-allowed;box-shadow:none;transform:none;}
.btn-ghost{
  background:transparent;
  color:var(--brand-700);
  border:1.5px solid var(--brand-500);
}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);filter:brightness(.97);}
.btn-block{width:100%;}

.form-note{
  font-size:13px;
  color:var(--ink-400);
}
.form-alert{
  display:none;
  margin-top:22px;
  padding:14px 16px;
  border-radius:10px;
  font-size:14px;
  line-height:1.7;
}
.form-alert.success{
  display:block;
  border:1px solid var(--brand-500);
  background:var(--brand-50);
  color:var(--brand-700);
}
.form-alert.error{
  display:block;
  border:1px solid var(--neg);
  background:#FDF1EF;
  color:var(--neg);
}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--dark-900);
  color:rgba(255,255,255,.7);
  padding:68px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.2fr;
  gap:44px;
  padding-bottom:52px;
}
.site-footer .brand{color:#fff;}
.site-footer .brand:hover{color:var(--brand-300);}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.6);
  max-width:34em;
}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col li{font-size:14px;}
.footer-col a{color:rgba(255,255,255,.7);}
.footer-col a:hover{color:var(--brand-300);}
.footer-col .plain{color:rgba(255,255,255,.55);font-size:14px;line-height:1.7;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 30px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.48);
}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .container{max-width:1080px;}
}
@media (max-width:1023px){
  :root{--gap-section:72px;}
  .container{padding:0 32px;}
  .quick-grid{grid-template-columns:repeat(2,1fr);}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .support-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px;}
  .footer-brand{grid-column:1/-1;}
}
@media (max-width:900px){
  .nav-side{display:none;}
  .header-inner{
    display:flex;
    justify-content:center;
    position:relative;
    min-height:64px;
  }
  .nav-toggle{
    display:flex;
    position:absolute;
    right:0;
    top:50%;
    transform:translateY(-50%);
  }
  .brand-text{font-size:16px;}
}
@media (max-width:767px){
  :root{--gap-section:56px;}
  .container{padding:0 24px;}
  .page-hero{padding:56px 0 52px;}
  .section-head{margin-bottom:32px;}
  .section-head h2{max-width:none;}
  .quick-grid{grid-template-columns:1fr;}
  .support-grid{grid-template-columns:1fr;}
  .faq-block{padding:4px 20px 8px;}
  .faq-q{font-size:16px;padding:20px 0 20px 14px;}
  .faq-a p{padding:0 36px 20px 14px;}
  .form-card{padding:30px 22px 28px;}
  .form-grid{grid-template-columns:1fr;}
  .form-actions{flex-direction:column;align-items:stretch;}
  .form-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 20px;}
  .page-hero h1{font-size:clamp(26px,7.6vw,34px);}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .metric{padding:22px 18px;}
  .metric .num{font-size:clamp(28px,8vw,38px);}
  .metric .label{font-size:13px;}
  .brand-text{font-size:15px;}
  .brand-mark{width:32px;height:32px;font-size:12px;}
  .hero-tags a{font-size:12px;padding:7px 13px;}
  .quick-card .body{padding:18px;}
  .support-card{padding:24px 20px 22px;}
}