/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --brand-900:#0C2F5A;
  --brand-700:#14508C;
  --brand-500:#2F7FCB;
  --brand-50:#EEF4FD;
  --accent-500:#FF6A3D;
  --accent-50:#FFF1EA;
  --ok-500:#1F9D6B;
  --warn-500:#D64545;
  --ink-900:#0F1B2D;
  --ink-600:#46586F;
  --ink-400:#7C8DA3;
  --bg:#F6F8FC;
  --line:#E3E9F2;
  --line-strong:#CFD9E6;
  --white:#FFFFFF;

  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:16px;
  --r-input:10px;

  --sh-rest:0 1px 2px rgba(12,47,90,.04), 0 10px 24px -14px rgba(12,47,90,.16);
  --sh-hover:0 2px 6px rgba(12,47,90,.06), 0 18px 36px -16px rgba(12,47,90,.22);

  --container:1200px;
  --gap:24px;

  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","DIN Alternate",system-ui,sans-serif;

  --tr:200ms ease;
}

/* ============ 基础重置 ============ */
*,*::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(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,ul,ol,dl{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--brand-700);text-decoration:none;transition:color var(--tr);}
a:hover{color:var(--brand-500);}
img{max-width:100%;display:block;border:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
strong{color:var(--ink-900);font-weight:600;}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ============ 容器 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:var(--white);}

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-title{
  font-size:28px;
  line-height:1.3;
  letter-spacing:-0.01em;
  font-weight:700;
  color:var(--ink-900);
  position:relative;
  padding-bottom:14px;
}
.section-title::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:104px;height:1px;
  background-image:repeating-linear-gradient(90deg, rgba(20,80,140,.28) 0 8px, transparent 8px 16px);
}
.section-desc{
  font-size:14px;
  color:var(--ink-400);
  margin-top:12px;
  max-width:640px;
}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--brand-50);
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--ink-600);
}
.topbar-inner{
  min-height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:4px;
  padding-bottom:4px;
}
.topbar-left{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.topbar-left .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent-500);
  display:inline-block;
  flex:none;
}
.topbar-sep{
  width:1px;height:12px;background:var(--line-strong);
  display:inline-block;
}
.topbar-right{display:flex;align-items:center;gap:14px;flex:none;}
.topbar-right a{font-size:13px;font-weight:600;color:var(--brand-700);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--white);
  border-bottom:1px solid var(--line);
}
.nav{
  min-height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{
  display:flex;
  flex-direction:column;
  gap:2px;
  line-height:1.15;
  flex:none;
}
.logo-main{
  font-size:18px;
  font-weight:700;
  letter-spacing:-0.01em;
  color:var(--ink-900);
}
.logo-sub{
  font-size:12px;
  font-weight:400;
  color:var(--ink-400);
  letter-spacing:.06em;
}
.logo:hover .logo-main{color:var(--brand-700);}

.nav-links{
  display:flex;
  align-items:center;
  gap:30px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:15px;
  letter-spacing:.02em;
  color:var(--ink-600);
  padding:22px 0;
  display:inline-flex;
  align-items:center;
  gap:7px;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:14px;
  height:2px;
  background:var(--brand-700);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--tr);
  border-radius:2px;
}
.nav-links a:hover{color:var(--brand-700);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--brand-700);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--brand-700);
  flex:none;
}

.nav-actions{display:flex;align-items:center;gap:12px;flex:none;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  transition:background var(--tr),color var(--tr),border-color var(--tr),box-shadow var(--tr),transform var(--tr);
  text-align:center;
}
.btn-primary{
  background:var(--brand-700);
  color:#fff;
  box-shadow:var(--sh-rest);
}
.btn-primary:hover{background:var(--brand-900);color:#fff;box-shadow:var(--sh-hover);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-primary:disabled,.btn-primary[aria-disabled="true"]{
  opacity:.6;cursor:not-allowed;box-shadow:none;
}
.btn-ghost{
  background:var(--white);
  color:var(--brand-700);
  border:1px solid var(--brand-700);
}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700);}
.btn-ghost:active{transform:translateY(1px);}
.btn-pill{
  border-radius:var(--r-pill);
  min-height:44px;
  padding:0 20px;
  font-size:14px;
  background:transparent;
  border:1px solid var(--brand-700);
  color:var(--brand-700);
}
.btn-pill:hover{background:var(--brand-50);color:var(--brand-700);}
.btn-block{width:100%;}

/* 文字链 CTA */
.link-cta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand-700);
}
.link-cta .arrow{
  display:inline-block;
  transition:transform var(--tr);
}
.link-cta:hover{color:var(--brand-700);text-decoration:underline;}
.link-cta:hover .arrow{transform:translateX(4px);}

/* 移动端菜单按钮 */
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:var(--white);
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--ink-900);
  position:relative;
  border-radius:2px;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:2px;background:var(--ink-900);
  border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(15,27,45,.45);
  backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;
  transition:opacity var(--tr),visibility var(--tr);
  z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:280px;
  max-width:86vw;
  background:var(--white);
  transform:translateX(100%);
  transition:transform 240ms ease;
  z-index:90;
  display:flex;
  flex-direction:column;
  padding:20px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  font-size:18px;color:var(--ink-600);
}
.drawer-nav{margin-top:8px;}
.drawer-nav a{
  display:flex;
  align-items:center;
  min-height:52px;
  font-size:15px;
  color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-700);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-400);}
.drawer-foot strong{display:block;font-size:16px;color:var(--brand-700);margin-top:4px;}

/* ============ Hero ============ */
.hero{
  position:relative;
  background:linear-gradient(180deg,#FFFFFF 0%, var(--bg) 100%);
  overflow:hidden;
  padding:80px 0 88px;
}
.hero-track{
  position:absolute;
  inset:0;
  width:100%;height:100%;
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--brand-700);
  background:var(--brand-50);
  border-radius:var(--r-pill);
  padding:5px 14px;
  margin-bottom:20px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-500);}
.hero h1{
  font-size:38px;
  line-height:1.28;
  letter-spacing:-0.01em;
  font-weight:700;
  color:var(--ink-900);
}
.hero-sub{
  margin-top:18px;
  font-size:19px;
  line-height:1.7;
  color:var(--ink-600);
  max-width:520px;
}
.hero-actions{
  margin-top:30px;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.hero-trust{
  margin-top:26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  font-size:13px;
  color:var(--ink-400);
}
.hero-trust .sep{width:1px;height:12px;background:var(--line-strong);}

.hero-visual{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:16 / 9;
  box-shadow:var(--sh-rest);
  background:var(--brand-50);
}
.hero-visual img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 400ms ease;
}
.hero-visual:hover img{transform:scale(1.03);}
.hero-visual::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(rgba(12,47,90,.35), rgba(12,47,90,.12));
}
.hero-stat{
  position:absolute;
  right:16px;bottom:16px;
  background:rgba(255,255,255,.96);
  border-radius:12px;
  padding:12px 16px;
  text-align:right;
  box-shadow:var(--sh-rest);
  z-index:2;
}
.hero-stat b{
  display:block;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:28px;
  line-height:1.1;
  color:var(--brand-700);
  font-weight:700;
}
.hero-stat span{font-size:12px;color:var(--ink-400);}

/* ============ 痛点问句 ============ */
.pains{
  border-top:1px solid var(--line);
}
.pain-list{margin-top:8px;}
.pain-item{
  display:grid;
  grid-template-columns:64px 1fr;
  gap:20px;
  align-items:start;
  padding:26px 0;
  border-bottom:1px solid var(--line);
}
.pain-item:first-child{border-top:1px solid var(--line);}
.pain-no{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:20px;
  font-weight:300;
  color:var(--accent-500);
  letter-spacing:.04em;
  line-height:1.5;
}
.pain-q{
  font-size:21px;
  line-height:1.5;
  font-weight:600;
  color:var(--ink-900);
  letter-spacing:-0.01em;
}
.pain-a{
  margin-top:8px;
  font-size:14px;
  color:var(--ink-400);
  max-width:780px;
}

/* ============ 卡片区 ============ */
.grid{display:grid;gap:var(--gap);}
.grid-12{grid-template-columns:repeat(12,1fr);}
.col-6{grid-column:span 6;}
.col-4{grid-column:span 4;}

.card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-rest);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform var(--tr),box-shadow var(--tr);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.card-media{
  position:relative;
  aspect-ratio:16 / 10;
  overflow:hidden;
  background:var(--brand-50);
}
.card-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 400ms ease;
}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:12px;
  flex:1;
}
.card-title{
  font-size:19px;
  line-height:1.5;
  font-weight:600;
  color:var(--ink-900);
  letter-spacing:-0.01em;
}
.card-text{
  font-size:14px;
  color:var(--ink-600);
  line-height:1.8;
}
.card-points{
  display:flex;
  flex-direction:column;
  gap:8px;
  margin-top:2px;
}
.card-points li{
  display:flex;
  gap:9px;
  align-items:flex-start;
  font-size:14px;
  color:var(--ink-600);
}
.card-points li::before{
  content:"";
  width:5px;height:5px;
  border-radius:50%;
  background:var(--brand-500);
  flex:none;
  margin-top:9px;
}
.card-foot{margin-top:auto;padding-top:6px;}

.card--compact .card-body{padding:22px;}
.card--compact{border-radius:var(--r-card);}
.card--accent{border-left:3px solid var(--accent-500);}
.card-index{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--ink-400);
}
.pill{
  display:inline-flex;
  align-items:center;
  font-size:12px;
  font-weight:600;
  color:var(--brand-700);
  background:var(--brand-50);
  border-radius:var(--r-pill);
  padding:4px 10px;
  line-height:1.5;
}
.pill--accent{color:#C1441F;background:var(--accent-50);}

/* ============ 数据带 ============ */
.data-band{
  background:var(--brand-900);
  color:#fff;
  padding:56px 0;
}
.data-band .data-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.data-cell{
  padding:4px 28px;
  border-left:1px solid rgba(255,255,255,.18);
  position:relative;
}
.data-cell:first-child{border-left:0;padding-left:0;}
.data-cell::before{
  content:"";
  position:absolute;
  top:-10px;left:28px;
  width:40px;height:1px;
  background-image:repeating-linear-gradient(90deg, rgba(255,255,255,.35) 0 6px, transparent 6px 12px);
}
.data-cell:first-child::before{left:0;}
.data-cell b{
  display:block;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:40px;
  line-height:1.1;
  font-weight:700;
  letter-spacing:-0.01em;
}
.data-cell span{
  display:block;
  margin-top:8px;
  font-size:12px;
  color:rgba(255,255,255,.72);
  letter-spacing:.04em;
}

/* ============ 资讯列表 ============ */
.news-feature{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:28px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-rest);
  transition:transform var(--tr),box-shadow var(--tr);
}
.news-feature:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.news-feature-media{
  display:block;
  aspect-ratio:5 / 3;
  overflow:hidden;
  background:var(--brand-50);
}
.news-feature-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;}
.news-feature:hover .news-feature-media img{transform:scale(1.03);}
.news-feature-body{
  padding:28px 28px 28px 0;
  display:flex;
  flex-direction:column;
  gap:12px;
  justify-content:center;
}
.news-feature-body h3{
  font-size:21px;
  line-height:1.5;
  font-weight:600;
  letter-spacing:-0.01em;
}
.news-feature-body h3 a{color:var(--ink-900);}
.news-feature-body h3 a:hover{color:var(--brand-700);}
.news-feature-body p{font-size:14px;color:var(--ink-600);}

.news-rows{margin-top:24px;border-top:1px solid var(--line);}
.news-row{
  display:grid;
  grid-template-columns:240px 1fr;
  gap:24px;
  padding:24px 0;
  border-bottom:1px solid var(--line);
  align-items:center;
}
.news-row-media{
  display:block;
  aspect-ratio:3 / 2;
  border-radius:12px;
  overflow:hidden;
  background:var(--brand-50);
}
.news-row-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms ease;}
.news-row:hover .news-row-media img{transform:scale(1.03);}
.news-row-body{display:flex;flex-direction:column;gap:10px;}
.news-row-body h3{
  font-size:18px;
  line-height:1.55;
  font-weight:600;
  letter-spacing:-0.01em;
}
.news-row-body h3 a{color:var(--ink-900);}
.news-row-body h3 a:hover{color:var(--brand-700);}
.news-row-body p{
  font-size:14px;
  color:var(--ink-600);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.meta{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--ink-400);
  flex-wrap:wrap;
}
.meta .sep{width:1px;height:12px;background:var(--line-strong);}

.empty-state{
  text-align:center;
  padding:56px 20px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
}
.empty-icon{
  width:56px;height:56px;
  border-radius:50%;
  background:var(--brand-50);
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 18px;
  color:var(--brand-700);
  font-size:20px;
  font-weight:700;
}
.empty-state h3{font-size:20px;color:var(--ink-900);font-weight:600;}
.empty-state p{font-size:13px;color:var(--ink-400);margin-top:8px;}

/* ============ 表单 ============ */
.form-section{background:var(--white);border-top:1px solid var(--line);}
.form-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:48px;
  align-items:start;
}
.form-intro h2{
  font-size:28px;
  line-height:1.35;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:-0.01em;
}
.form-intro p{margin-top:16px;font-size:14px;color:var(--ink-600);}
.form-points{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.form-points li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--ink-600);
}
.form-points li::before{
  content:"";width:5px;height:5px;border-radius:50%;
  background:var(--brand-700);flex:none;margin-top:9px;
}
.form-privacy{margin-top:24px;font-size:13px;color:var(--ink-400);}

.form-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-rest);
}
.field{margin-bottom:18px;}
.field label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--ink-900);
  margin-bottom:8px;
}
.field input,
.field select,
.field textarea{
  width:100%;
  min-height:44px;
  padding:10px 14px;
  border:1px solid var(--line-strong);
  border-radius:var(--r-input);
  background:var(--white);
  font-size:15px;
  color:var(--ink-900);
  transition:border-color var(--tr),box-shadow var(--tr);
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-400) 50%),linear-gradient(135deg,var(--ink-400) 50%,transparent 50%);background-position:calc(100% - 20px) 20px, calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--brand-500);
  box-shadow:0 0 0 4px var(--brand-50);
}
.field.is-error input,
.field.is-error select,
.field.is-error textarea{
  border-color:var(--warn-500);
}
.field-error{
  display:none;
  margin-top:6px;
  font-size:12px;
  color:var(--warn-500);
}
.field.is-error .field-error{display:block;}

.checkbox{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:13px;
  color:var(--ink-600);
  line-height:1.7;
}
.checkbox input{
  width:18px;height:18px;
  margin-top:5px;flex:none;
  accent-color:var(--brand-700);
}
.form-actions{margin-top:22px;}

.form-success{
  display:none;
  text-align:center;
  padding:30px 10px;
}
.form-success.is-visible{display:block;}
.form-success .ok-icon{
  width:56px;height:56px;
  border-radius:50%;
  background:var(--accent-50);
  color:var(--ok-500);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 16px;
  font-size:26px;
  font-weight:700;
}
.form-success h3{font-size:20px;color:var(--ink-900);font-weight:600;}
.form-success p{margin-top:8px;font-size:14px;color:var(--ink-600);}
.form-success .link-cta{margin-top:14px;}

/* ============ 隐私条 ============ */
.privacy-bar{
  background:var(--brand-50);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:22px 0;
}
.privacy-inner{
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--ink-600);
}
.privacy-inner .shield{
  width:26px;height:26px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  background:var(--white);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand-700);
  font-size:12px;
  font-weight:700;
  flex:none;
}
.privacy-list{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.privacy-list .sep{width:1px;height:12px;background:var(--line-strong);}

/* ============ FAQ ============ */
.faq-list{margin-top:8px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--ink-900);
  line-height:1.6;
  transition:color var(--tr);
  position:relative;
}
.faq-q:hover{color:var(--brand-700);}
.faq-q .chev{
  flex:none;
  width:18px;height:18px;
  position:relative;
  transition:transform var(--tr);
}
.faq-q .chev::before,
.faq-q .chev::after{
  content:"";
  position:absolute;
  top:50%;left:50%;
  background:var(--ink-400);
  border-radius:2px;
}
.faq-q .chev::before{width:12px;height:1.5px;transform:translate(-50%,-50%);}
.faq-q .chev::after{width:1.5px;height:12px;transform:translate(-50%,-50%);transition:opacity var(--tr);}
.faq-item.is-open .faq-q{color:var(--brand-700);}
.faq-item.is-open .faq-q::before{
  content:"";
  position:absolute;
  left:-14px;top:26px;
  width:4px;height:18px;
  border-radius:2px;
  background:var(--brand-700);
}
.faq-item.is-open .chev{transform:rotate(180deg);}
.faq-item.is-open .chev::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 260ms ease;
}
.faq-item.is-open .faq-a{max-height:400px;}
.faq-a p{
  padding:0 0 22px;
  margin-top:12px;
  font-size:14px;
  line-height:1.75;
  color:var(--ink-600);
  max-width:820px;
}

/* ============ 尾部 CTA ============ */
.tail-cta{
  background:linear-gradient(180deg,var(--brand-50) 0%, #FFFFFF 100%);
  border-top:1px solid var(--line);
  text-align:center;
  padding:80px 0;
}
.tail-cta h2{
  font-size:27px;
  line-height:1.4;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:-0.01em;
}
.tail-cta p{margin-top:14px;font-size:14px;color:var(--ink-600);}
.tail-cta .btn{margin-top:26px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--white);
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--ink-900);
  margin-bottom:18px;
  letter-spacing:.04em;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:13px;color:var(--ink-400);line-height:1.9;max-width:300px;}
.footer-brand .tel{
  display:block;
  margin-top:14px;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:18px;
  font-weight:600;
  color:var(--brand-700);
}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:13px;color:var(--ink-600);}
.footer-links a:hover{color:var(--brand-700);}
.qr{
  width:96px;height:96px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;
  color:var(--ink-400);
  text-align:center;
  padding:8px;
  line-height:1.5;
}
.footer-col .contact-line{font-size:13px;color:var(--ink-600);margin-bottom:10px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  color:var(--ink-400);
}
.footer-bottom a{font-size:12px;color:var(--ink-400);}
.footer-bottom a:hover{color:var(--brand-700);}

/* ============ 弹层 ============ */
.modal-mask{
  position:fixed;inset:0;
  background:rgba(15,27,45,.45);
  backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;
  transition:opacity var(--tr),visibility var(--tr);
  z-index:100;
  display:flex;
  align-items:flex-start;
  justify-content:center;
  padding:48px 20px;
  overflow-y:auto;
}
.modal-mask.is-open{opacity:1;visibility:visible;}
.modal{
  width:560px;
  max-width:100%;
  background:var(--white);
  border-radius:var(--r-img);
  padding:28px;
  position:relative;
  transform:translateY(12px);
  transition:transform 220ms ease;
  box-shadow:var(--sh-hover);
}
.modal-mask.is-open .modal{transform:translateY(0);}
.modal-close{
  position:absolute;
  top:10px;right:10px;
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  color:var(--ink-400);
  border-radius:var(--r-btn);
}
.modal-close:hover{background:var(--brand-50);color:var(--brand-700);}
.modal h3{
  font-size:21px;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:-0.01em;
}
.modal > p{
  margin-top:10px;
  font-size:13px;
  color:var(--ink-400);
  margin-bottom:20px;
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--container:1140px;}
  .hero h1{font-size:34px;}
  .data-cell b{font-size:36px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:64px 0;}
  .hero{padding:56px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:18px;}
  .col-6,.col-4{grid-column:span 12;}
  .news-feature{grid-template-columns:1fr;}
  .news-feature-body{padding:0 24px 24px;}
  .form-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .data-band .data-grid{grid-template-columns:1fr 1fr;}
  .data-cell{padding:16px 20px;border-left:0;border-top:1px solid rgba(255,255,255,.18);}
  .data-cell:nth-child(odd){border-left:0;padding-left:0;}
  .data-cell:nth-child(even){border-left:1px solid rgba(255,255,255,.18);}
  .data-cell:first-child{border-top:0;}
  .data-cell:nth-child(2){border-top:0;}
  .data-cell::before{display:none;}
  .pain-q{font-size:19px;}
  .tail-cta{padding:64px 0;}
}
@media (max-width:767px){
  .topbar-right .online{display:none;}
  .news-row{grid-template-columns:1fr;gap:16px;}
  .news-row-media{aspect-ratio:16 / 9;}
  .section-title{font-size:24px;}
  .form-intro h2{font-size:24px;}
  .tail-cta h2{font-size:22px;}
  .pain-item{grid-template-columns:44px 1fr;gap:14px;}
  .pain-q{font-size:18px;}
  .footer-grid{grid-template-columns:1fr;}
  .hero h1{font-size:28px;}
  .data-cell b{font-size:32px;}
}
@media (max-width:519px){
  .section{padding:48px 0;}
  .hero{padding:44px 0 52px;}
  .hero h1{font-size:26px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .card-body{padding:20px;}
  .form-card{padding:20px;}
  .modal{padding:22px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
}

/* roulang page: article */
:root{
  --brand-900:#0C2F5A;
  --brand-700:#14508C;
  --brand-500:#2F7FCB;
  --brand-50:#EEF4FD;
  --accent-500:#FF6A3D;
  --accent-50:#FFF1EA;
  --ok-500:#1F9D6B;
  --warn-500:#D64545;
  --ink-900:#0F1B2D;
  --ink-600:#46586F;
  --ink-400:#7C8DA3;
  --bg:#F6F8FC;
  --line:#E3E9F2;
  --line-strong:#CFD9E6;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-1:0 1px 2px rgba(12,47,90,.04), 0 10px 24px -14px rgba(12,47,90,.16);
  --shadow-2:0 2px 6px rgba(12,47,90,.06), 0 18px 36px -16px rgba(12,47,90,.22);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","DIN Alternate",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
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;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em;line-height:1.3;}
p{margin:0;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:0;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
  text-align:center;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brand-900);color:#fff;box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-900);}
.btn-ghost:active{transform:translateY(1px);}
.btn-pill{border-radius:999px;background:#fff;color:var(--brand-700);border-color:var(--brand-700);min-height:40px;padding:0 20px;font-size:14px;}
.btn-pill:hover{background:var(--brand-50);color:var(--brand-900);}
.btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
.btn[disabled],.btn.is-disabled{opacity:.6;pointer-events:none;}
.btn-block{width:100%;}

.link-cta{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-size:14px;font-weight:600;}
.link-cta .arrow{transition:transform .2s ease;}
.link-cta:hover{color:var(--brand-900);text-decoration:underline;}
.link-cta:hover .arrow{transform:translateX(4px);}

.pill{
  display:inline-block;padding:4px 10px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-700);
  font-size:12px;line-height:1.6;font-weight:600;letter-spacing:.02em;
}
.pill-accent{background:var(--accent-50);color:var(--accent-500);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.logo{display:flex;flex-direction:column;justify-content:center;line-height:1.15;color:var(--ink-900);}
.logo-main{font-size:18px;font-weight:700;letter-spacing:-.01em;}
.logo-sub{font-size:12px;font-weight:400;color:var(--ink-400);letter-spacing:.18em;}
.logo:hover{color:var(--brand-700);}
.nav-links{display:none;align-items:center;gap:32px;}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-600);letter-spacing:.02em;padding:6px 0;
}
.nav-links a:hover{color:var(--brand-700);}
.nav-links a.is-active{color:var(--ink-900);font-weight:600;}
.nav-links a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand-700);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--radius-btn);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{position:relative;display:block;width:18px;height:1.5px;background:var(--ink-900);}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink-900);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
@media (min-width:1024px){
  .nav-links{display:flex;}
  .nav-toggle{display:none;}
}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.45);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:280px;max-width:88vw;background:#fff;
  transform:translateX(100%);transition:transform .24s ease;z-index:90;
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--radius-btn);cursor:pointer;font-size:18px;color:var(--ink-600);}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px;}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;font-size:15px;color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-700);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid var(--line);}
.drawer-foot .tel{display:block;font-size:18px;font-weight:700;color:var(--ink-900);margin-top:6px;}

/* ---------- 页面主体 ---------- */
.page-main{padding:28px 0 0;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:nowrap;overflow:hidden;
  font-size:13px;color:var(--ink-400);gap:8px;margin-bottom:22px;
}
.breadcrumb a{color:var(--ink-400);}
.breadcrumb a:hover{color:var(--brand-700);}
.breadcrumb .sep{color:var(--line-strong);}
.breadcrumb .current{color:var(--ink-900);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:340px;}
@media (max-width:575px){.breadcrumb .current{max-width:160px;}}

.article-head{padding-bottom:22px;border-bottom:1px solid var(--line);}
.article-title{font-size:28px;line-height:1.3;margin:14px 0 14px;font-weight:700;}
@media (min-width:1024px){.article-title{font-size:32px;}}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--ink-400);}
.article-meta .dot{width:1px;height:12px;background:var(--line-strong);}
.article-cover{
  margin:26px 0 0;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:16/9;background:var(--brand-50);
}
.article-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.article-cover:hover img{transform:scale(1.03);}

.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;padding:36px 0 0;}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start;}
}
.article-body{max-width:800px;}

/* ---------- 正文排版 ---------- */
.prose-cn{font-size:16.5px;line-height:1.9;color:var(--ink-600);}
.prose-cn h2{
  font-size:22px;line-height:1.4;margin:38px 0 14px;padding-left:12px;
  border-left:3px solid var(--brand-700);
}
.prose-cn h3{font-size:18px;margin:28px 0 10px;}
.prose-cn h2:first-child,.prose-cn h3:first-child{margin-top:0;}
.prose-cn p{margin:0 0 1.2em;}
.prose-cn strong{color:var(--ink-900);}
.prose-cn blockquote{
  margin:24px 0;padding:16px 20px;background:var(--brand-50);
  border-left:3px solid var(--brand-700);border-radius:0 10px 10px 0;
  font-size:15px;font-style:italic;color:var(--ink-600);
}
.prose-cn ul{margin:0 0 1.2em;}
.prose-cn ul li{position:relative;padding-left:18px;margin-bottom:8px;}
.prose-cn ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--brand-700);
}
.prose-cn ol{counter-reset:pc;margin:0 0 1.2em;}
.prose-cn ol li{position:relative;padding-left:28px;margin-bottom:8px;counter-increment:pc;}
.prose-cn ol li::before{
  content:counter(pc);position:absolute;left:0;top:0;color:var(--brand-700);
  font-family:var(--font-num);font-weight:700;
}
.prose-cn img{border-radius:12px;margin:20px 0;}
.prose-cn a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
.prose-cn a:hover{color:var(--brand-500);}
.prose-cn table{width:100%;border-collapse:collapse;font-size:14.5px;margin:20px 0;}
.prose-cn th{background:var(--brand-50);color:var(--ink-900);text-align:left;font-weight:600;padding:11px 12px;border:1px solid var(--line);}
.prose-cn td{padding:11px 12px;border:1px solid var(--line);}
.prose-cn pre{
  margin:20px 0;padding:14px 16px;background:var(--brand-50);border-radius:8px;overflow-x:auto;
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13.5px;line-height:1.7;color:var(--ink-900);
}
.prose-cn code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.94em;background:var(--brand-50);padding:2px 6px;border-radius:6px;color:var(--brand-700);}
.prose-cn pre code{background:transparent;padding:0;color:inherit;}
.prose-cn hr{border:none;border-top:1px solid var(--line);margin:32px 0;}
@media (max-width:767px){
  .prose-cn{font-size:16px;}
  .prose-cn table{display:block;overflow-x:auto;white-space:nowrap;}
}

.empty-state{
  text-align:center;padding:64px 24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
}
.empty-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:50%;
  background:var(--brand-50);border:1px solid var(--line);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;
}
.empty-title{font-size:20px;color:var(--ink-900);font-weight:600;margin-bottom:8px;}
.empty-desc{font-size:13px;color:var(--ink-400);margin-bottom:18px;}

/* ---------- 侧栏 ---------- */
.sidebar{display:flex;flex-direction:column;gap:24px;}
@media (min-width:1024px){.sidebar{position:sticky;top:96px;}}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 22px 24px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:15px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line);}
.toc-list{display:flex;flex-direction:column;}
.toc-item a{
  display:block;padding:8px 0;font-size:14px;color:var(--ink-600);border-bottom:1px solid var(--line);
}
.toc-item a:hover{color:var(--brand-700);}
.toc-item.is-sub a{padding-left:14px;font-size:13px;color:var(--ink-400);}
.toc-empty{font-size:13px;color:var(--ink-400);padding:6px 0;}
.rec-list{display:flex;flex-direction:column;gap:18px;}
.rec-item .rec-thumb{
  border-radius:12px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;background:var(--brand-50);
}
.rec-item .rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.rec-item:hover .rec-thumb img{transform:scale(1.03);}
.rec-item h4{font-size:15px;margin:10px 0 6px;line-height:1.5;}
.rec-item:hover h4{color:var(--brand-700);}
.rec-item .rec-date{font-size:12px;color:var(--ink-400);}
.side-cta{background:var(--brand-50);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;}
.side-cta h3{font-size:16px;margin-bottom:8px;}
.side-cta p{font-size:13px;color:var(--ink-600);margin-bottom:16px;}

/* ---------- 文章底部 ---------- */
.article-foot{margin-top:44px;padding-top:28px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:28px;}
.tag-row .label{font-size:13px;color:var(--ink-400);}
.tag{
  display:inline-block;padding:6px 12px;border-radius:999px;font-size:13px;
  background:#fff;border:1px solid var(--line);color:var(--ink-600);transition:all .2s ease;
}
.tag:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--brand-50);}
.post-nav{display:grid;grid-template-columns:1fr;gap:16px;margin-bottom:24px;}
@media (min-width:576px){.post-nav{grid-template-columns:1fr 1fr;}}
.post-nav-item{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 20px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease;
}
.post-nav-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);color:inherit;}
.post-nav-item .pn-label{font-size:12px;color:var(--ink-400);display:block;margin-bottom:6px;}
.post-nav-item .pn-title{font-size:15px;color:var(--ink-900);font-weight:600;line-height:1.5;}
.post-nav-item.is-right{text-align:right;}

/* ---------- 相关推荐 ---------- */
.related{margin-top:56px;padding-top:36px;border-top:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;}
.section-head h2{font-size:24px;}
.section-head .sub{font-size:14px;color:var(--ink-400);margin-top:6px;}
.grid-3{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:576px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}}
.card{
  display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.card-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--brand-50);}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-thumb img{transform:scale(1.03);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:18px;line-height:1.5;margin-bottom:10px;}
.card-body p{font-size:14px;color:var(--ink-600);margin-bottom:16px;}
.card-body .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--ink-400);}

/* ---------- 尾部 CTA ---------- */
.cta-band{
  margin-top:72px;padding:56px 24px;text-align:center;
  background:linear-gradient(180deg,var(--brand-50) 0%,#FFFFFF 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band h2{font-size:24px;margin-bottom:10px;}
@media (min-width:1024px){.cta-band h2{font-size:28px;}}
.cta-band p{font-size:14px;color:var(--ink-600);margin-bottom:24px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.78);padding:56px 0 0;margin-top:0;}
.site-footer .logo-main{color:#fff;}
.site-footer .logo-sub{color:rgba(255,255,255,.6);}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
  .footer-col + .footer-col{border-left:1px solid rgba(255,255,255,.14);padding-left:40px;}
}
.footer-brand p{font-size:13px;line-height:1.9;color:rgba(255,255,255,.68);margin:14px 0 12px;max-width:320px;}
.footer-brand .tel{font-size:20px;font-weight:700;color:#fff;}
.site-footer h4{color:#fff;font-size:14px;margin-bottom:16px;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:13px;color:rgba(255,255,255,.72);}
.footer-links a:hover{color:#fff;}
.contact-line{font-size:13px;margin-bottom:8px;color:rgba(255,255,255,.72);}
.qr{
  width:96px;height:96px;margin-top:14px;background:#fff;border-radius:10px;border:1px solid rgba(255,255,255,.3);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:var(--ink-400);line-height:1.5;
}
.footer-bottom{
  margin-top:44px;padding:18px 0 24px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  font-size:12px;color:rgba(255,255,255,.5);
}

/* ---------- 表单 / 弹层 ---------- */
.modal-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.45);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;padding:20px;
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;z-index:100;
}
.modal-mask.is-open{opacity:1;visibility:visible;}
.modal{
  width:560px;max-width:92vw;max-height:88vh;overflow-y:auto;background:#fff;
  border-radius:16px;padding:28px;position:relative;box-shadow:0 24px 48px -20px rgba(12,47,90,.4);
}
.modal-close{
  position:absolute;top:8px;right:8px;width:44px;height:44px;border:none;background:transparent;
  color:var(--ink-400);font-size:20px;cursor:pointer;border-radius:10px;line-height:1;
}
.modal-close:hover{background:var(--brand-50);color:var(--ink-900);}
.modal h3{font-size:20px;margin-bottom:8px;}
.modal .modal-sub{font-size:13px;color:var(--ink-400);margin-bottom:20px;}
.form-grid{display:grid;grid-template-columns:1fr;gap:16px;}
@media (min-width:576px){.form-grid .span-2{grid-column:span 2;}.form-grid{grid-template-columns:1fr 1fr;}}
.field{display:flex;flex-direction:column;gap:6px;}
.field label{font-size:13px;color:var(--ink-600);font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;min-height:44px;padding:10px 14px;border:1px solid var(--line-strong);
  border-radius:10px;background:#fff;font-size:14px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px var(--brand-50);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--warn-500);}
.field .err{font-size:12px;color:var(--warn-500);display:none;}
.field.has-error .err{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-400);line-height:1.7;}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand-700);}
.form-note{font-size:12px;color:var(--ink-400);text-align:center;}
.form-success{text-align:center;padding:24px 8px;}
.form-success .ok-icon{
  width:52px;height:52px;margin:0 auto 14px;border-radius:50%;background:var(--accent-50);color:var(--ok-500);
  display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;border:1px solid var(--line);
}
.form-success h4{font-size:18px;margin-bottom:8px;}
.form-success p{font-size:13px;color:var(--ink-400);margin-bottom:14px;}

:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}

/* roulang page: category1 */
:root{
  --brand-900:#0C2F5A;
  --brand-700:#14508C;
  --brand-500:#2F7FCB;
  --brand-50:#EEF4FD;
  --accent-500:#FF6A3D;
  --accent-50:#FFF1EA;
  --ok-500:#1F9D6B;
  --warn-500:#D64545;
  --ink-900:#0F1B2D;
  --ink-600:#46586F;
  --ink-400:#7C8DA3;
  --bg:#F6F8FC;
  --line:#E3E9F2;
  --line-strong:#CFD9E6;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-1:0 1px 2px rgba(12,47,90,.04), 0 10px 24px -14px rgba(12,47,90,.16);
  --shadow-2:0 2px 6px rgba(12,47,90,.06), 0 18px 36px -16px rgba(12,47,90,.22);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","DIN Alternate",system-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(--bg);
}
h1,h2,h3,h4{color:var(--ink-900);font-weight:600;line-height:1.3;letter-spacing:-.01em;margin:0}
h1{font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1440px){.container{max-width:1280px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{display:flex;flex-direction:column;line-height:1.15;text-decoration:none;flex:none}
.logo-main{font-size:18px;font-weight:700;color:var(--brand-900);letter-spacing:.01em}
.logo-sub{font-size:12px;font-weight:400;color:var(--ink-400);letter-spacing:.18em}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{position:relative;font-size:15px;color:var(--ink-600);letter-spacing:.02em;padding:8px 0}
.nav-links a:hover{color:var(--brand-700)}
.nav-links a.is-active{color:var(--brand-900);font-weight:600}
.nav-links a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--brand-700)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:500;border:1px solid transparent;transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease}
.btn-primary{background:var(--brand-700);color:#fff}
.btn-primary:hover{background:var(--brand-900);color:#fff;box-shadow:var(--shadow-2);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-primary[disabled]{opacity:.6;cursor:not-allowed;pointer-events:none}
.btn-ghost{background:#fff;border-color:var(--brand-700);color:var(--brand-700)}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700)}
.btn-ghost:active{transform:translateY(1px)}
.btn-pill{min-height:40px;padding:0 20px;font-size:14px;border-radius:999px;background:#fff;border-color:var(--brand-700);color:var(--brand-700)}
.btn-pill:hover{background:var(--brand-50);color:var(--brand-700)}
.btn-block{width:100%}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;position:relative}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:12px;width:20px;height:1.5px;background:var(--ink-900);border-radius:2px;content:"";transition:transform .2s ease}
.nav-toggle span{top:21px}
.nav-toggle span::before{top:-6px;left:0}
.nav-toggle span::after{top:6px;left:0}
.drawer-foot{display:none}
.nav-mask{position:fixed;inset:0;background:rgba(15,27,45,.45);opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:70}
.nav-mask.is-open{opacity:1;visibility:visible}
@media (max-width:1023px){
  .nav-toggle{display:block}
  .nav-links{position:fixed;top:0;right:0;width:280px;height:100vh;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:76px 20px 24px;transform:translateX(100%);transition:transform .28s ease;z-index:80;border-left:1px solid var(--line);overflow-y:auto}
  .nav-links.is-open{transform:translateX(0)}
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav-links a.is-active::after{display:none}
  .nav-links a.is-active{color:var(--brand-700)}
  .drawer-foot{display:block;margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}
  .drawer-foot .logo{margin-bottom:10px}
  .drawer-foot a.tel{font-size:16px;color:var(--brand-700)}
}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line);padding:52px 0 72px}
.hero-track{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.breadcrumb{position:relative;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin-bottom:26px}
.breadcrumb a{color:var(--ink-400)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--ink-900)}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.pill{display:inline-block;font-size:12px;padding:4px 12px;border-radius:999px;background:var(--brand-50);color:var(--brand-700);letter-spacing:.04em}
.page-hero h1{font-size:38px;margin:16px 0 16px;letter-spacing:-.01em}
.hero-sub{font-size:19px;color:var(--ink-600);line-height:1.7;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 22px}
.trust-row{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--ink-400)}
.trust-row li{position:relative;padding-right:14px}
.trust-row li:not(:last-child)::after{content:"";position:absolute;right:0;top:6px;width:1px;height:12px;background:var(--line-strong)}
.hero-media{position:relative;border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-1)}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(rgba(12,47,90,.35),rgba(12,47,90,.12))}
.media-card{position:absolute;right:16px;bottom:16px;z-index:2;background:rgba(255,255,255,.95);border-radius:12px;padding:12px 16px;display:flex;flex-direction:column;align-items:flex-end;box-shadow:var(--shadow-1)}
.media-card .num{font-size:28px;font-weight:700;color:var(--accent-500);line-height:1.1}
.media-card span:last-child{font-size:12px;color:var(--ink-400)}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero{padding:36px 0 52px}
  .page-hero h1{font-size:30px}
  .hero-sub{font-size:17px}
}
@media (max-width:575px){
  .page-hero h1{font-size:26px}
  .hero-actions .btn{width:100%}
}

/* ---------- section base ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{font-size:28px}
.section-head p{margin-top:14px;font-size:14px;color:var(--ink-600)}
.section-head--rule h2::after{content:"";display:block;width:128px;height:1px;margin-top:16px;background:repeating-linear-gradient(90deg,var(--brand-700) 0 8px,transparent 8px 16px);opacity:.12}
@media (max-width:1023px){.section{padding:64px 0}.section-head h2{font-size:24px}}
@media (max-width:575px){.section{padding:48px 0}.section-head h2{font-size:22px}}

/* ---------- stat strip ---------- */
.stat-strip{background:var(--brand-900);padding:52px 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:0 24px;position:relative}
.stat:not(:last-child){border-right:1px solid rgba(255,255,255,.18)}
.stat:not(:last-child)::before{content:"";position:absolute;top:-10px;right:-16px;width:32px;height:1px;background:repeating-linear-gradient(90deg,rgba(255,255,255,.4) 0 4px,transparent 4px 8px)}
.stat .num{display:block;font-size:40px;font-weight:700;color:#fff;line-height:1.1}
.stat .stat-label{display:block;margin-top:8px;font-size:12px;color:rgba(255,255,255,.72);letter-spacing:.04em}
.stat .stat-note{display:block;margin-top:4px;font-size:12px;color:rgba(255,255,255,.5)}
@media (max-width:767px){
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:28px 0}
  .stat:nth-child(2n){border-right:0}
  .stat:nth-child(2n)::before{display:none}
  .stat .num{font-size:30px}
}

/* ---------- anchor content layout ---------- */
.anchor-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.anchor-col{position:sticky;top:96px;border-left:1px solid var(--line);padding-left:20px}
.anchor-title{font-size:12px;letter-spacing:.12em;color:var(--ink-400);margin-bottom:14px}
.anchor-link{display:block;position:relative;padding:9px 0 9px 16px;font-size:14px;color:var(--ink-600)}
.anchor-link::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:6px;height:6px;border-radius:50%;background:var(--line-strong);transition:background-color .2s ease}
.anchor-link:hover{color:var(--brand-700)}
.anchor-link.is-active{color:var(--brand-700);font-weight:600}
.anchor-link.is-active::before{background:var(--brand-700)}
.step-item{padding:28px 0;border-bottom:1px solid var(--line)}
.step-item:first-child{padding-top:0}
.step-item:nth-child(odd){margin-left:32px}
.step-num{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:24px;font-weight:300;color:var(--accent-500);line-height:1.2;margin-bottom:10px}
.step-item h3{font-size:20px;margin-bottom:10px}
.step-item p{font-size:14px;color:var(--ink-600)}
.point-list{display:grid;gap:8px;margin-top:14px}
.point-list li{position:relative;padding-left:16px;font-size:14px;color:var(--ink-600)}
.point-list li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:var(--brand-500)}
@media (max-width:1023px){
  .anchor-layout{grid-template-columns:1fr;gap:28px}
  .anchor-col{position:static;border-left:0;padding-left:0;display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;border-bottom:1px solid var(--line)}
  .anchor-title{display:none}
  .anchor-link{flex:none;padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;white-space:nowrap}
  .anchor-link::before{display:none}
  .anchor-link.is-active{border-color:var(--brand-700);background:var(--brand-50)}
  .step-item:nth-child(odd){margin-left:0}
}

/* ---------- horizontal card list ---------- */
.card-list{display:flex;flex-direction:column;gap:20px}
.card-row{display:grid;grid-template-columns:260px 1fr;gap:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease}
.card-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.card-row .thumb{border-radius:12px;overflow:hidden;background:var(--brand-50)}
.card-row .thumb img{width:100%;height:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .3s ease}
.card-row:hover .thumb img{transform:scale(1.03)}
.card-row h3{font-size:18px;margin:10px 0 8px}
.card-row p{font-size:14px}
.card-row .card-foot{margin-top:14px;font-size:13px;color:var(--ink-400);display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.text-cta{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand-700);font-weight:500}
.text-cta .arrow{transition:transform .2s ease}
.text-cta:hover .arrow{transform:translateX(4px)}
.text-cta:hover{text-decoration:underline}
@media (max-width:767px){
  .card-row{grid-template-columns:1fr;gap:16px}
}

/* ---------- cta bar ---------- */
.cta-bar{padding:0 0 96px}
.cta-bar-inner{background:var(--brand-50);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.cta-bar-inner h2{font-size:20px;margin-bottom:6px}
.cta-bar-inner p{font-size:14px}
@media (max-width:767px){
  .cta-bar{padding-bottom:64px}
  .cta-bar-inner{flex-direction:column;align-items:flex-start;padding:24px}
  .cta-bar-inner .btn{width:100%}
}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{position:relative;display:flex;justify-content:space-between;align-items:flex-start;gap:16px;padding:20px 0 20px 16px;font-size:16px;font-weight:600;color:var(--ink-900);cursor:pointer;list-style:none;transition:color .2s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:0;top:29px;width:4px;height:4px;border-radius:50%;background:var(--brand-700);opacity:0;transition:opacity .2s ease}
.faq-item summary::after{content:"";flex:none;width:9px;height:9px;margin-top:8px;border-right:1.5px solid var(--ink-400);border-bottom:1.5px solid var(--ink-400);transform:rotate(45deg);transition:transform .2s ease}
.faq-item[open] summary{color:var(--brand-700)}
.faq-item[open] summary::before{opacity:1}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--brand-700)}
.faq-answer{padding:12px 0 22px 16px;font-size:14px;line-height:1.75;color:var(--ink-600);max-width:820px}

/* ---------- form ---------- */
.lead-layout{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.lead-copy h2{font-size:28px;margin-bottom:16px}
.lead-points{display:grid;gap:10px;margin:20px 0}
.lead-points li{position:relative;padding-left:16px;font-size:14px;color:var(--ink-600)}
.lead-points li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:var(--brand-500)}
.privacy-note{font-size:13px;color:var(--ink-400);line-height:1.7}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:500;color:var(--ink-900);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;min-height:44px;padding:10px 14px;color:var(--ink-900);background:#fff;border:1px solid var(--line-strong);border-radius:10px;transition:border-color .2s ease,box-shadow .2s ease}
.field textarea{min-height:112px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px var(--brand-50)}
.field.has-error input{border-color:var(--warn-500)}
.field .err{display:none;margin-top:6px;font-size:12px;color:var(--warn-500)}
.field.has-error .err{display:block}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-600);margin:4px 0 20px}
.check input{width:16px;height:16px;margin-top:5px;flex:none;accent-color:var(--brand-700)}
.form-success{display:none;flex-direction:column;align-items:flex-start;gap:10px;padding:12px 0}
.form-success.is-visible{display:flex}
.success-icon{width:44px;height:44px;border-radius:50%;background:var(--accent-50);border:1px solid var(--brand-50);display:flex;align-items:center;justify-content:center;color:var(--ok-500);font-size:20px}
.form-success h3{font-size:18px}
.form-success p{font-size:14px}
@media (max-width:1023px){
  .lead-layout{grid-template-columns:1fr;gap:32px}
}
@media (max-width:575px){
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:22px}
}

/* ---------- tail cta ---------- */
.tail-cta{background:linear-gradient(180deg,var(--brand-50),#fff);padding:80px 0;text-align:center}
.tail-cta h2{font-size:26px}
.tail-cta p{margin:14px auto 26px;font-size:14px;max-width:560px}
@media (max-width:575px){.tail-cta{padding:56px 0}.tail-cta h2{font-size:22px}}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
.footer-grid > .footer-col:not(:last-child){border-right:1px solid rgba(255,255,255,.12)}
.footer-col{padding-right:32px}
.footer-col:last-child{padding-right:0;border-right:0}
.site-footer .logo-main{color:#fff}
.site-footer .logo-sub{color:rgba(255,255,255,.55)}
.footer-brand p{font-size:14px;margin:14px 0 12px;color:rgba(255,255,255,.7);line-height:1.75}
.site-footer .tel{font-size:16px;color:#fff;font-weight:600}
.site-footer .tel:hover{color:var(--brand-500)}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.7)}
.footer-links a:hover{color:#fff}
.contact-line{font-size:14px;margin-bottom:8px}
.qr{width:96px;height:96px;margin-top:14px;background:#fff;border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;text-align:center;font-size:12px;line-height:1.5;color:var(--ink-400)}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.14);font-size:12px;color:rgba(255,255,255,.5)}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-grid > .footer-col:not(:last-child){border-right:0}
  .footer-col{padding-right:0}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category2 */
:root{
  --brand-900:#0C2F5A;
  --brand-700:#14508C;
  --brand-500:#2F7FCB;
  --brand-50:#EEF4FD;
  --accent-500:#FF6A3D;
  --accent-50:#FFF1EA;
  --ok-500:#1F9D6B;
  --warn-500:#D64545;
  --ink-900:#0F1B2D;
  --ink-600:#46586F;
  --ink-400:#7C8DA3;
  --bg:#F6F8FC;
  --line:#E3E9F2;
  --line-strong:#CFD9E6;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --shadow-1:0 1px 2px rgba(12,47,90,.04),0 10px 24px -14px rgba(12,47,90,.16);
  --shadow-2:0 2px 6px rgba(12,47,90,.06),0 18px 36px -16px rgba(12,47,90,.22);
  --ease:200ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-600);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:var(--brand-700);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand-500)}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:600;letter-spacing:-0.01em;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
.num{font-family:"Inter","DIN Alternate",system-ui,sans-serif;font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1440px){.container{max-width:1280px}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:20px}
.logo{display:flex;flex-direction:column;line-height:1.2;color:var(--ink-900)}
.logo-main{font-size:18px;font-weight:700;letter-spacing:-0.01em}
.logo-sub{font-size:12px;font-weight:400;color:var(--ink-400);letter-spacing:.14em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:68px;
  font-size:15px;letter-spacing:.02em;color:var(--ink-600);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--brand-700);transition:left var(--ease),right var(--ease);
}
.nav-links a:hover{color:var(--brand-700)}
.nav-links a:hover::after{left:0;right:0}
.nav-links a.is-active{color:var(--brand-900);font-weight:600}
.nav-links a.is-active::after{left:0;right:0}
.nav-actions{display:flex;align-items:center;gap:12px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn-primary{background:var(--brand-700);color:#fff}
.btn-primary:hover{background:var(--brand-900);color:#fff;box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-primary[disabled],.btn-primary.is-disabled{opacity:.6;pointer-events:none}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:var(--brand-700)}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-900)}
.btn-ghost:active{transform:translateY(1px)}
.btn-pill{
  background:#fff;color:var(--brand-700);border:1px solid var(--brand-700);
  border-radius:999px;min-height:40px;padding:0 18px;font-size:14px;font-weight:600;
}
.btn-pill:hover{background:var(--brand-50);color:var(--brand-900)}
.btn-pill:active{transform:translateY(1px)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  border-radius:10px;background:#fff;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:12px;width:20px;height:1.5px;background:var(--ink-900);
  transition:transform var(--ease);
}
.nav-toggle span{top:21px}
.nav-toggle span::before{top:-6px;left:0}
.nav-toggle span::after{top:6px;left:0}

/* drawer */
.drawer{position:fixed;inset:0;z-index:80;pointer-events:none}
.drawer-mask{position:absolute;inset:0;background:rgba(15,27,45,.45);opacity:0;transition:opacity var(--ease);backdrop-filter:blur(4px)}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:280px;background:#fff;
  border-left:1px solid var(--line);transform:translateX(100%);
  transition:transform 240ms ease;display:flex;flex-direction:column;
}
.drawer.is-open{pointer-events:auto}
.drawer.is-open .drawer-mask{opacity:1}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-600);font-size:18px;line-height:1}
.drawer-links{display:flex;flex-direction:column;padding:8px 20px}
.drawer-links a{padding:15px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-600)}
.drawer-links a.is-active{color:var(--brand-900);font-weight:600}
.drawer-foot{margin-top:auto;padding:20px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-400)}
.drawer-foot a{display:block;font-size:16px;color:var(--ink-900);margin-top:6px}

/* ============ hero ============ */
.hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line)}
.hero-svg{position:absolute;right:-8%;top:-18%;width:820px;height:820px;opacity:.06;pointer-events:none}
.hero-svg path{fill:none;stroke:var(--brand-700);stroke-width:1}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1fr;gap:40px;
  padding:48px 0 56px;align-items:center;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin-bottom:18px}
.breadcrumb a{color:var(--ink-400)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--ink-900)}
.hero h1{font-size:34px;line-height:1.25}
.hero-sub{margin-top:16px;font-size:17px;color:var(--ink-600);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-trust{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:24px;
  font-size:13px;color:var(--ink-400);
}
.hero-trust span.dot{width:1px;height:12px;background:var(--line-strong)}
.hero-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1)}
.hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 400ms ease}
.hero-media:hover img{transform:scale(1.03)}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(rgba(12,47,90,.35),rgba(12,47,90,.12));
}
.hero-stat{
  position:absolute;right:16px;bottom:16px;z-index:2;background:#fff;border-radius:12px;
  padding:12px 16px;box-shadow:var(--shadow-2);text-align:right;
}
.hero-stat .n{font-size:28px;font-weight:700;color:var(--brand-900);line-height:1.1}
.hero-stat .t{font-size:12px;color:var(--ink-400);margin-top:4px}

/* ============ 通用区块 ============ */
.section{padding:48px 0}
.section-head{max-width:720px}
.section-head h2{font-size:26px}
.section-head .desc{margin-top:12px;font-size:14px;color:var(--ink-600)}
.tick{
  height:1px;margin:18px 0 0;max-width:280px;
  background-image:repeating-linear-gradient(to right,var(--brand-700) 0 8px,transparent 8px 16px);
  opacity:.12;
}
.eyebrow{
  display:inline-flex;align-items:center;font-size:12px;letter-spacing:.16em;
  color:var(--brand-700);background:var(--brand-50);border-radius:999px;padding:4px 10px;
}
.pill{
  display:inline-flex;align-items:center;font-size:12px;color:var(--brand-700);
  background:var(--brand-50);border-radius:999px;padding:4px 10px;
}
.pill-accent{background:var(--accent-50);color:var(--accent-500)}
.link-cta{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700)}
.link-cta .arw{transition:transform var(--ease)}
.link-cta:hover{color:var(--brand-700);text-decoration:underline}
.link-cta:hover .arw{transform:translateX(4px)}

/* 数字带 */
.stats-band{background:var(--brand-50);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0;padding:12px 0}
.stat-item{padding:24px 20px;border-bottom:1px solid var(--line)}
.stat-item .num{display:block;font-size:34px;font-weight:700;color:var(--brand-900);line-height:1.1}
.stat-item .label{display:block;margin-top:8px;font-size:12px;color:var(--ink-600)}
.stat-item .label em{display:block;font-style:normal;color:var(--ink-400);margin-top:4px;font-size:12px}

/* 对比卡 */
.compare-grid{display:grid;grid-template-columns:1fr;gap:24px;margin-top:32px}
.compare-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-1)}
.compare-card h3{font-size:19px}
.compare-card .cap{margin-top:10px;font-size:13px;color:var(--ink-400)}
.compare-list{margin-top:18px}
.compare-list li{padding:13px 0;border-top:1px solid var(--line);font-size:15px;line-height:1.7;display:flex;gap:10px}
.compare-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;margin-top:11px;background:var(--ink-400);
}
.compare-card.is-plain{background:#FBFCFE}
.compare-card.is-plain h3{color:var(--ink-600)}
.compare-card.is-plain .compare-list li{color:var(--ink-400)}
.compare-card.is-brand{border-color:var(--brand-500);background:var(--brand-50)}
.compare-card.is-brand h3{color:var(--brand-700)}
.compare-card.is-brand .compare-list li{color:var(--ink-900)}
.compare-card.is-brand .compare-list li::before{background:var(--brand-700)}
.compare-card.is-brand .compare-list li{border-top-color:rgba(20,80,140,.16)}

/* zigzag */
.zig{margin-top:40px;display:flex;flex-direction:column;gap:44px}
.zig-block{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
.zig-media{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1)}
.zig-media img{width:100%;aspect-ratio:5/4;object-fit:cover;transition:transform 400ms ease}
.zig-media:hover img{transform:scale(1.03)}
.zig-copy h3{font-size:22px}
.zig-copy p{margin-top:14px;font-size:15px}
.points{margin-top:20px}
.points li{position:relative;padding-left:18px;margin-bottom:10px;font-size:14px;color:var(--ink-600)}
.points li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--brand-700);
}

/* FAQ */
.faq-list{margin-top:28px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;padding:20px 32px 20px 0;
  font-size:16px;font-weight:600;color:var(--ink-900);position:relative;line-height:1.6;
  transition:color var(--ease);
}
.faq-q:hover{color:var(--brand-700)}
.faq-q::before{
  content:"";position:absolute;left:-14px;top:28px;width:4px;height:4px;border-radius:50%;
  background:var(--brand-700);opacity:0;transition:opacity var(--ease);
}
.faq-q .chev{
  position:absolute;right:0;top:50%;width:14px;height:14px;margin-top:-7px;
  border-right:1px solid var(--ink-400);border-bottom:1px solid var(--ink-400);
  transform:rotate(45deg);transition:transform var(--ease);
}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms ease}
.faq-a p{padding:0 24px 20px 0;font-size:14px;line-height:1.75;color:var(--ink-600)}
.faq-item.is-open .faq-q{color:var(--brand-700)}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-item.is-open .faq-q .chev{transform:rotate(-135deg);border-color:var(--brand-700)}
.faq-item.is-open .faq-a{max-height:300px}

/* 表单 */
.lead-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.lead-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:56px 0}
.lead-copy h2{font-size:26px}
.lead-copy .desc{margin-top:14px;font-size:15px}
.lead-points{margin-top:22px}
.lead-points li{position:relative;padding-left:20px;margin-bottom:12px;font-size:14px}
.lead-points li::before{
  content:"";position:absolute;left:0;top:8px;width:8px;height:2px;background:var(--brand-700);
}
.lead-note{margin-top:20px;font-size:13px;color:var(--ink-400)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-1)}
.form-row{display:grid;grid-template-columns:1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;color:var(--ink-900);margin-bottom:8px;font-weight:600}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:15px;color:var(--ink-900);
  background:#fff;border:1px solid var(--line-strong);border-radius:var(--r-btn);
  padding:0 12px;min-height:44px;transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{min-height:112px;padding:12px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-400) 50%),linear-gradient(135deg,var(--ink-400) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 15px) 20px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px var(--brand-50);
}
.field.has-error input,.field.has-error select{border-color:var(--warn-500)}
.field-error{display:none;margin-top:6px;font-size:12px;color:var(--warn-500)}
.field.has-error .field-error{display:block}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-600);margin:6px 0 18px}
.check input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand-700)}
.form-card .btn-primary{width:100%}
.form-state{margin-top:14px;font-size:12px;color:var(--ink-400)}
.form-success{display:none;text-align:center;padding:24px 8px}
.form-success .ok-mark{
  width:52px;height:52px;border-radius:50%;background:var(--brand-50);color:var(--ok-500);
  display:flex;align-items:center;justify-content:center;font-size:22px;margin:0 auto 14px;
}
.form-success h3{font-size:19px}
.form-success p{margin-top:10px;font-size:14px}
.form-card.is-success .form-body{display:none}
.form-card.is-success .form-success{display:block}

/* CTA */
.cta{background:linear-gradient(180deg,var(--brand-50),#FFFFFF);border-top:1px solid var(--line)}
.cta-inner{padding:56px 0;text-align:center}
.cta-inner h2{font-size:26px}
.cta-inner p{margin-top:12px;font-size:14px;color:var(--ink-600)}
.cta-inner .btn{margin-top:24px}

/* 弹层 */
.modal{position:fixed;inset:0;z-index:90;display:none}
.modal.is-open{display:block}
.modal-mask{position:absolute;inset:0;background:rgba(15,27,45,.45);backdrop-filter:blur(4px)}
.modal-panel{
  position:relative;width:92vw;max-width:560px;margin:8vh auto;background:#fff;
  border-radius:16px;padding:26px;box-shadow:var(--shadow-2);max-height:84vh;overflow:auto;
}
.modal-close{
  position:absolute;top:8px;right:8px;width:44px;height:44px;border:0;background:transparent;
  color:var(--ink-400);font-size:20px;line-height:1;
}
.modal-close:hover{color:var(--ink-900)}
.modal-panel h3{font-size:20px}
.modal-panel .desc{margin-top:10px;font-size:14px}

/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px;padding:48px 0 32px}
.footer-col h4{font-size:15px;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--ink-600)}
.footer-brand p{margin-top:14px;font-size:14px;max-width:320px}
.footer-brand .tel{display:inline-block;margin-top:14px;font-size:20px;font-weight:700;color:var(--brand-900)}
.contact-line{font-size:14px;margin-bottom:8px}
.qr{
  width:96px;height:96px;border:1px solid var(--line);border-radius:12px;background:#fff;
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:var(--ink-400);line-height:1.5;margin-top:12px;
}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;
  padding:18px 0 28px;border-top:1px solid var(--line);font-size:12px;color:var(--ink-400);
}

/* 响应式 */
@media (min-width:576px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .form-row.two{grid-template-columns:1fr 1fr}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-actions .btn-pill{display:none}
}
@media (min-width:768px){
  .hero-grid{grid-template-columns:7fr 5fr;gap:44px;padding:64px 0 72px}
  .hero h1{font-size:38px}
  .section{padding:64px 0}
  .stats-grid{grid-template-columns:repeat(4,1fr)}
  .stat-item{border-bottom:0;border-right:1px solid var(--line);position:relative}
  .stat-item:last-child{border-right:0}
  .stat-item::before{
    content:"";position:absolute;top:16px;left:0;width:56px;height:1px;
    background-image:repeating-linear-gradient(to right,var(--brand-700) 0 8px,transparent 8px 16px);
    opacity:.12;
  }
  .compare-grid{grid-template-columns:1fr 1fr}
  .zig-block{grid-template-columns:5fr 7fr}
  .zig-block.is-reverse{grid-template-columns:7fr 5fr}
  .zig-block.is-reverse .zig-media{order:2}
  .zig-block.is-reverse .zig-copy{order:1}
  .lead-grid{grid-template-columns:5fr 7fr;gap:48px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
}
@media (min-width:1024px){
  .section{padding:96px 0}
  .hero h1{font-size:40px}
  .section-head h2{font-size:28px}
  .lead-grid{padding:72px 0}
  .cta-inner{padding:72px 0}
}
@media (min-width:1024px){
  .footer-col{border-right:1px solid var(--line);padding-right:24px}
  .footer-col:last-child{border-right:0;padding-right:0}
}
@media (min-width:1024px){
  .drawer{display:none}
}

/* roulang page: category3 */
:root{
  --brand-900:#0C2F5A;
  --brand-700:#14508C;
  --brand-500:#2F7FCB;
  --brand-50:#EEF4FD;
  --accent-500:#FF6A3D;
  --accent-50:#FFF1EA;
  --ok-500:#1F9D6B;
  --warn-500:#D64545;
  --ink-900:#0F1B2D;
  --ink-600:#46586F;
  --ink-400:#7C8DA3;
  --bg:#F6F8FC;
  --line:#E3E9F2;
  --line-strong:#CFD9E6;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(12,47,90,.04), 0 10px 24px -14px rgba(12,47,90,.16);
  --shadow-2:0 2px 6px rgba(12,47,90,.06), 0 18px 36px -16px rgba(12,47,90,.22);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","DIN Alternate",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.3;letter-spacing:-0.01em;font-weight:700}
p{margin:0}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1440px){.container{max-width:1280px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background-color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-900);color:#fff;box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;border-color:var(--brand-700);color:var(--brand-700)}
.btn-ghost:hover{background:var(--brand-50);color:var(--brand-700)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.6;pointer-events:none}
.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.btn-pill{
  border-radius:999px;background:#fff;border:1px solid var(--brand-700);color:var(--brand-700);
  min-height:40px;padding:0 20px;font-weight:600;
}
.btn-pill:hover{background:var(--brand-50)}
.link-cta{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700)}
.link-cta .arw{transition:transform .2s ease;font-family:var(--font-num)}
.link-cta:hover{color:var(--brand-700);text-decoration:underline}
.link-cta:hover .arw{transform:translateX(4px)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:#fff;
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px}
.logo{display:flex;flex-direction:column;line-height:1.15;color:var(--ink-900)}
.logo-main{font-size:18px;font-weight:700;letter-spacing:-0.01em}
.logo-sub{font-size:12px;font-weight:400;color:var(--ink-400);letter-spacing:.06em}
.logo:hover{color:var(--ink-900)}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links > a{
  position:relative;font-size:15px;letter-spacing:.02em;color:var(--ink-600);padding:10px 0;
}
.nav-links > a:hover{color:var(--brand-700)}
.nav-links > a.is-active{color:var(--brand-700);font-weight:600}
.nav-links > a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;background:var(--brand-700);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--radius-btn);
  cursor:pointer;position:relative;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink-900);margin:0 auto;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.drawer-extra{display:none}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(15,27,45,.45);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:55;
}
body.nav-open .nav-backdrop{opacity:1;visibility:visible}
@media (max-width:1023px){
  .nav-toggle{display:block}
  .nav-links{
    position:fixed;top:0;right:0;height:100%;width:280px;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;
    padding:28px 20px 24px;z-index:60;overflow-y:auto;
    transform:translateX(100%);transition:transform .24s ease;
    box-shadow:-12px 0 32px -18px rgba(12,47,90,.28);
  }
  body.nav-open .nav-links{transform:translateX(0)}
  .nav-links > a{padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
  .nav-links > a.is-active::after{display:none}
  .nav-links > a.is-active{color:var(--brand-700);border-left:3px solid var(--brand-700);padding-left:10px}
  .drawer-extra{display:block;margin-top:auto;padding-top:24px;border-top:1px solid var(--line)}
  .drawer-extra .logo{margin-bottom:10px}
  .drawer-extra a.tel{font-size:15px;font-weight:600;color:var(--brand-700)}
}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:18px 0 0;font-size:13px;color:var(--ink-400)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.breadcrumb li::after{content:"›";margin-left:6px;color:var(--line-strong)}
.breadcrumb li:last-child::after{content:""}
.breadcrumb a{color:var(--ink-400)}
.breadcrumb a:hover{color:var(--brand-700)}
.breadcrumb .current{color:var(--ink-900)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
@media (max-width:1023px){.section{padding:64px 0}}
@media (max-width:575px){.section{padding:48px 0}}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:28px}
.eyebrow{font-size:13px;color:var(--brand-700);letter-spacing:.08em;font-weight:600;margin-bottom:10px}
.section-desc{font-size:14px;color:var(--ink-600);margin-top:12px}
.rule-scale{
  height:1px;margin-top:18px;width:180px;
  background-image:repeating-linear-gradient(to right,var(--brand-700) 0 8px,transparent 8px 16px);
  opacity:.12;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;margin-top:24px;border-radius:16px;overflow:hidden;
  background-color:var(--brand-900);
  background-image:linear-gradient(rgba(12,47,90,.78),rgba(12,47,90,.56)),url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
}
.hero-inner{padding:64px 40px;max-width:820px}
.hero .eyebrow{color:#BBD6F3}
.hero h1{color:#fff;font-size:36px;letter-spacing:-0.015em}
.hero .hero-sub{color:#E4EEFA;font-size:19px;margin-top:16px;font-weight:500;max-width:640px}
.hero .hero-text{color:#C8D9ED;font-size:15px;margin-top:14px;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero .btn-ghost{background:rgba(255,255,255,.96)}
.hero-facts{display:flex;flex-wrap:wrap;gap:18px;margin-top:28px;font-size:13px;color:#BFD4EA}
.hero-facts span{display:inline-flex;align-items:center;gap:18px}
.hero-facts span::after{content:"";width:1px;height:12px;background:rgba(255,255,255,.28)}
.hero-facts span:last-child::after{display:none}
@media (max-width:767px){
  .hero-inner{padding:44px 24px}
  .hero h1{font-size:28px}
  .hero .hero-sub{font-size:17px}
}

/* ---------- 时间线 ---------- */
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:8px}
.step{position:relative;padding:44px 26px 0 0}
.step::before{content:"";position:absolute;top:9px;left:0;right:0;height:2px;background:var(--brand-50)}
.step:last-child::before{display:none}
.step .dot{
  position:absolute;top:5px;left:0;width:10px;height:10px;border-radius:50%;
  background:var(--brand-700);box-shadow:0 0 0 4px #fff;
}
.step .idx{
  font-family:var(--font-num);font-size:13px;font-weight:600;color:var(--accent-500);
  letter-spacing:.08em;display:block;margin-bottom:8px;
}
.step h3{font-size:16px;margin-bottom:8px}
.step p{font-size:14px;line-height:1.75}
@media (max-width:1023px){
  .timeline{grid-template-columns:1fr 1fr;row-gap:32px}
  .step{padding:40px 20px 0 0}
  .step:nth-child(odd)::before{right:20px}
}
@media (max-width:575px){
  .timeline{grid-template-columns:1fr;row-gap:0}
  .step{padding:0 0 24px 34px;border-left:2px solid var(--brand-50);margin-left:4px}
  .step::before{display:none}
  .step .dot{top:6px;left:-6px}
}

/* ---------- 竖卡 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.card-media{overflow:hidden;background:var(--brand-50)}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px}
.card-body p{font-size:14px}
.pill{
  display:inline-flex;align-items:center;font-size:12px;padding:4px 10px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-700);font-weight:600;width:fit-content;
}
.pill-accent{background:var(--accent-50);color:var(--accent-500)}
.card-points{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.card-points li{position:relative;padding-left:14px;font-size:14px}
.card-points li::before{
  content:"";position:absolute;left:0;top:11px;width:4px;height:4px;border-radius:50%;background:var(--brand-500);
}
.card-body .link-cta{margin-top:auto;padding-top:6px}
@media (max-width:1023px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575px){.card-grid{grid-template-columns:1fr}}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;gap:14px;cursor:pointer;list-style:none;
  padding:22px 0;font-size:16px;font-weight:600;color:var(--ink-900);
  transition:color .2s ease;min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";width:4px;height:4px;border-radius:50%;background:var(--brand-700);
  flex:0 0 auto;opacity:0;transition:opacity .2s ease;
}
.faq-item summary::after{
  content:"";width:8px;height:8px;margin-left:auto;flex:0 0 auto;
  border-right:1.5px solid var(--ink-400);border-bottom:1.5px solid var(--ink-400);
  transform:rotate(45deg);transition:transform .2s ease;
}
.faq-item[open] summary{color:var(--brand-700)}
.faq-item[open] summary::before{opacity:1}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-answer{font-size:14px;line-height:1.75;padding:0 0 22px 18px;max-width:720px}

/* ---------- 表单 ---------- */
.lead-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);max-width:860px;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field.span-2{grid-column:1 / -1}
.field label{font-size:14px;font-weight:600;color:var(--ink-900)}
.field input,.field select,.field textarea{
  width:100%;height:44px;padding:0 14px;border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);background:#fff;color:var(--ink-900);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 4px var(--brand-50);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--warn-500)}
.field .err{font-size:12px;color:var(--warn-500);display:none}
.field.has-error .err{display:block}
.checkbox{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-600)}
.checkbox input{width:18px;height:18px;margin-top:3px;flex:0 0 auto;accent-color:var(--brand-700)}
.form-note{font-size:13px;color:var(--ink-400);margin-top:14px}
.form-success{display:none;text-align:center;padding:36px 12px}
.form-success.is-visible{display:block}
.form-success .tick{
  width:52px;height:52px;border-radius:50%;background:var(--accent-50);color:var(--ok-500);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:22px;font-weight:700;
}
.form-success h3{font-size:20px;margin-bottom:8px}
.form-success p{font-size:14px;margin-bottom:14px}
@media (max-width:767px){.form-grid{grid-template-columns:1fr}.lead-card{padding:22px}}

/* ---------- CTA 条 ---------- */
.cta-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  background:var(--brand-50);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 32px;
}
.cta-bar h3{font-size:20px;margin-bottom:6px}
.cta-bar p{font-size:14px}
@media (max-width:575px){.cta-bar{padding:24px 20px}.cta-bar .btn{width:100%}}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:96px;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
@media (min-width:1024px){
  .footer-col + .footer-col{border-left:1px solid var(--line);padding-left:32px}
}
.footer-brand p{font-size:14px;margin:14px 0 12px;max-width:320px}
.footer-brand .tel{font-size:18px;font-weight:700;color:var(--brand-700)}
.footer-col h4{font-size:14px;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--ink-600)}
.footer-links a:hover{color:var(--brand-700)}
.contact-line{font-size:14px;margin-bottom:8px}
.qr{
  width:96px;height:96px;margin-top:14px;border:1px solid var(--line);border-radius:12px;background:#fff;
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:var(--ink-400);line-height:1.5;
}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  border-top:1px solid var(--line);margin-top:40px;padding-top:20px;
  font-size:12px;color:var(--ink-400);
}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{margin-top:48px;padding-top:40px}
}