/* roulang page: index */
:root{
  --c-blue:#1E5BD8;
  --c-blue-dark:#143C8C;
  --c-blue-hover:#1748B0;
  --c-blue-soft:#EAF0FE;
  --c-yellow:#F2B705;
  --c-yellow-soft:#FFF6DB;
  --c-bg:#F7F9FC;
  --c-white:#FFFFFF;
  --c-text:#101828;
  --c-text-2:#5A6C88;
  --c-text-3:#8A98AD;
  --c-border:#E4EAF3;
  --c-green:#12A594;
  --radius-card:10px;
  --radius-btn:8px;
  --radius-chip:4px;
  --shadow-card:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.06);
  --shadow-hover:0 2px 4px rgba(16,24,40,.06),0 14px 34px rgba(16,24,40,.10);
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --sec-y:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-blue);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--c-blue-hover);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--c-text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-blue);outline-offset:2px;border-radius:4px;}
::selection{background:var(--c-yellow-soft);color:var(--c-text);}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin-right:auto;margin-left:auto;}
@media (min-width:1200px){.container{max-width:1200px;}}
.row{--bs-gutter-x:24px;}
@media (min-width:1200px){.row{--bs-gutter-x:32px;}}
@media (max-width:767px){.container{padding-left:16px;padding-right:16px;}}

/* ---------- 文本与标题 ---------- */
.h1{font-size:clamp(30px,4vw,48px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
.section-title{font-size:clamp(24px,3vw,32px);font-weight:700;letter-spacing:-.01em;display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.px-mark{display:inline-block;width:16px;height:8px;flex:0 0 16px;background:linear-gradient(90deg,var(--c-blue) 0 8px,var(--c-yellow) 8px 16px);}
.section-sub{margin-top:12px;font-size:16px;color:var(--c-text-2);max-width:720px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--c-blue-dark);background:var(--c-yellow-soft);border:1px solid #F3E2A8;border-radius:var(--radius-chip);padding:4px 10px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:14px 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;}
.btn-primary{background:var(--c-blue);color:#fff;border-color:var(--c-blue);}
.btn-primary:hover{background:var(--c-blue-hover);border-color:var(--c-blue-hover);color:#fff;transform:translateY(-1px);}
.btn-primary:active{background:var(--c-blue-dark);transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-blue);border-color:#BDD0F5;}
.btn-ghost:hover{background:var(--c-blue-soft);color:var(--c-blue-hover);border-color:var(--c-blue);transform:translateY(-1px);}
.btn-sm{height:38px;padding:10px 16px;font-size:14px;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-blue);text-decoration:underline;text-decoration-color:transparent;text-underline-offset:3px;transition:text-decoration-color .18s ease-out;}
.link-more:hover{text-decoration-color:var(--c-blue);}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.04em;line-height:1;padding:6px 10px;border-radius:var(--radius-chip);border:1px solid var(--c-border);background:#fff;color:var(--c-text-2);transition:border-color .18s ease-out,color .18s ease-out,background-color .18s ease-out;}
.chip:hover{border-color:var(--c-blue);color:var(--c-blue);background:var(--c-blue-soft);}
.chip--yellow{background:var(--c-yellow-soft);border-color:#F3E2A8;color:var(--c-blue-dark);}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--c-border);transition:box-shadow .2s ease-out;}
.site-header.is-stuck{box-shadow:0 1px 2px rgba(16,24,40,.06);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--c-text);letter-spacing:.01em;}
.brand:hover{color:var(--c-blue);}
.brand .px-mark{width:16px;height:16px;flex:0 0 16px;background:linear-gradient(180deg,var(--c-blue) 0 8px,var(--c-yellow) 8px 16px);}
.brand-sub{font-family:var(--mono);font-size:11px;color:var(--c-text-3);letter-spacing:.06em;border-left:1px solid var(--c-border);padding-left:10px;}
.nav-center{display:flex;align-items:center;}
.nav-list{display:flex;align-items:center;gap:32px;}
.nav-list a{position:relative;display:block;font-size:15px;font-weight:500;color:var(--c-text-2);padding:8px 0;}
.nav-list a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-blue);transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;}
.nav-list a:hover{color:var(--c-blue);}
.nav-list a:hover::after{transform:scaleX(1);}
.nav-list a.active{color:var(--c-text);}
.nav-list a.active::after{transform:scaleX(1);}
.nav-list a.active::before{content:"";position:absolute;right:-9px;top:50%;width:4px;height:4px;background:var(--c-yellow);transform:translateY(-50%);}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--c-border);border-radius:var(--radius-btn);background:#fff;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);transition:transform .18s ease-out,opacity .18s ease-out;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
@media (max-width:991px){
  .nav-center{position:fixed;left:0;right:0;top:72px;bottom:0;background:#fff;border-top:1px solid var(--c-border);padding:16px 24px 40px;overflow-y:auto;transform:translateY(-8px);opacity:0;pointer-events:none;transition:opacity .18s ease-out,transform .18s ease-out;display:block;}
  .nav-center.is-open{opacity:1;transform:none;pointer-events:auto;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-list li{border-bottom:1px solid var(--c-border);}
  .nav-list a{font-size:17px;font-weight:600;color:var(--c-text);padding:16px 0;}
  .nav-list a::after{display:none;}
  .nav-list a.active{color:var(--c-blue);}
  .nav-list a.active::before{right:4px;width:6px;height:6px;}
  .nav-toggle{display:flex;}
  .nav-actions .btn{display:none;}
}

/* ---------- 板块 ---------- */
.section{padding:var(--sec-y) 0;}
.section--alt{background:var(--c-bg);}
.section--tight{padding:64px 0;}
.section-head{margin-bottom:40px;}
.section-head--center{text-align:center;}
.section-head--center .section-title{justify-content:center;}
.section-head--center .section-sub{margin-left:auto;margin-right:auto;}
@media (max-width:767px){
  :root{--sec-y:48px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:28px;}
}
.dotted{position:relative;overflow:hidden;}
.dotted::before{content:"";position:absolute;inset:0;background-image:radial-gradient(#1E5BD8 1px,transparent 1px);background-size:8px 8px;opacity:.04;pointer-events:none;}

/* ---------- Hero ---------- */
.hero{position:relative;background:linear-gradient(180deg,#F7F9FC 0%,#FFFFFF 100%);border-bottom:1px solid var(--c-border);padding:64px 0 64px;overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(#1E5BD8 1px,transparent 1px);background-size:8px 8px;opacity:.04;pointer-events:none;}
.hero-inner{position:relative;}
.hero h1{margin-top:18px;}
.hero-lead{margin-top:18px;font-size:16px;color:var(--c-text-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:28px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px;padding-top:24px;border-top:1px solid var(--c-border);}
.hero-panel{border:1px solid var(--c-border);border-radius:var(--radius-card);background:#fff;box-shadow:var(--shadow-card);overflow:hidden;}
.hero-panel img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--c-blue-soft);}
.hero-console{border-top:1px solid var(--c-border);background:#fff;padding:16px 20px 18px;}
.console-row{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-family:var(--mono);font-size:13px;padding:7px 0;border-bottom:1px dashed var(--c-border);}
.console-row:last-child{border-bottom:0;}
.console-row .k{color:var(--c-text-3);letter-spacing:.02em;}
.console-row .v{color:var(--c-blue-dark);font-weight:600;}
.console-row .v em{font-style:normal;color:var(--c-text-2);font-size:12px;}

/* ---------- 指标看板 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric-card{position:relative;background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:24px;transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;}
.metric-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(30,91,216,.3);}
.metric-num{font-family:var(--mono);font-size:clamp(34px,4vw,46px);line-height:1.1;font-weight:700;color:var(--c-blue-dark);letter-spacing:-.02em;}
.metric-num .unit{font-size:16px;font-weight:600;margin-left:4px;color:var(--c-text-2);}
.metric-label{margin-top:8px;font-size:13px;color:var(--c-text-2);letter-spacing:.02em;}
.metric-note{margin-top:16px;font-family:var(--mono);font-size:11px;line-height:1.5;color:var(--c-text-3);}
@media (max-width:991px){.metric-grid{grid-template-columns:repeat(2,1fr);gap:16px;}}
@media (max-width:575px){.metric-grid{grid-template-columns:1fr;}}

/* ---------- 通用卡片 ---------- */
.card-x{display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;}
.card-x:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(30,91,216,.3);}
.card-body-x{padding:22px;display:flex;flex-direction:column;height:100%;}
.card-x h3{font-size:19px;font-weight:600;}
.card-x p{margin-top:10px;font-size:14.5px;color:var(--c-text-2);}
.card-meta{margin-top:auto;padding-top:16px;font-family:var(--mono);font-size:12px;color:var(--c-text-3);display:flex;align-items:center;justify-content:space-between;gap:8px;letter-spacing:.02em;}
.card-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-blue-soft);}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.card-x:hover .card-thumb img{transform:scale(1.03);}
.card--feature .card-body-x{padding:26px;}
.card--feature h3{font-size:22px;}

/* ---------- bento 矩阵 ---------- */
.bento .card-x{min-height:100%;}
.bento-lg .card-thumb{aspect-ratio:16/8;}
.bento-sm .card-thumb{aspect-ratio:16/9;}

/* ---------- 入口/检索 ---------- */
.search-panel{background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:24px;}
.search-bar{display:flex;gap:12px;flex-wrap:wrap;}
.search-bar input{flex:1 1 260px;min-height:46px;}
.form-control,.form-select{min-height:44px;border:1px solid var(--c-border);border-radius:var(--radius-btn);font-size:15px;color:var(--c-text);background-color:#fff;transition:border-color .18s ease-out,box-shadow .18s ease-out;}
.form-control::placeholder{color:var(--c-text-3);}
.form-control:focus,.form-select:focus{border-color:var(--c-blue);box-shadow:0 0 0 2px rgba(30,91,216,.18);outline:none;}
.entry-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;position:relative;}
.steps::before{content:"";position:absolute;left:8px;right:8px;top:5px;height:1px;background:var(--c-border);}
.step{position:relative;padding-top:28px;}
.step-dot{position:absolute;left:0;top:0;width:10px;height:10px;background:var(--c-blue);box-shadow:0 0 0 3px #fff;}
.step:nth-child(even) .step-dot{background:var(--c-yellow);}
.step-idx{font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--c-text-3);}
.step h3{font-size:17px;font-weight:600;margin-top:6px;}
.step p{margin-top:8px;font-size:14px;color:var(--c-text-2);}
@media (max-width:991px){
  .steps{grid-template-columns:1fr 1fr;gap:20px 24px;}
  .steps::before{display:none;}
  .step{padding-top:0;padding-left:22px;border-left:1px solid var(--c-border);}
  .step-dot{left:-5px;top:4px;}
}
@media (max-width:575px){.steps{grid-template-columns:1fr;}}

/* ---------- 结果对比 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-col{border:1px solid var(--c-border);border-radius:var(--radius-card);padding:26px;background:var(--c-bg);}
.compare-col--after{background:var(--c-blue-soft);border-color:#C9D8F7;}
.compare-tag{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--c-text-3);}
.compare-col--after .compare-tag{color:var(--c-blue);}
.compare-col h3{font-size:19px;margin-top:8px;}
.compare-col--after h3{color:var(--c-blue-dark);}
.compare-list{margin-top:18px;}
.compare-list li{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed var(--c-border);font-size:14.5px;color:var(--c-text-2);}
.compare-list li:last-child{border-bottom:0;}
.compare-list li span:last-child{font-family:var(--mono);font-size:13px;color:var(--c-text);white-space:nowrap;}
.compare-col--after .compare-list li span:last-child{color:var(--c-blue-dark);font-weight:600;}
.compare-note{margin-top:16px;font-family:var(--mono);font-size:12px;color:var(--c-text-3);}
@media (max-width:767px){.compare{grid-template-columns:1fr;}}

/* ---------- 里程碑 ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:32px 24px;}
.timeline::before{content:"";position:absolute;left:0;right:0;top:5px;height:1px;background:var(--c-border);}
.tl-item{position:relative;padding-top:26px;}
.tl-node{position:absolute;top:0;left:0;width:10px;height:10px;background:var(--c-blue);box-shadow:0 0 0 3px #fff;}
.tl-item:nth-child(3n+2) .tl-node{background:var(--c-yellow);}
.tl-year{font-family:var(--mono);font-size:13px;letter-spacing:.04em;color:var(--c-blue-dark);font-weight:600;}
.tl-item h3{font-size:17px;font-weight:600;margin-top:8px;}
.tl-item p{margin-top:8px;font-size:14px;color:var(--c-text-2);}
@media (max-width:991px){
  .timeline{grid-template-columns:1fr;}
  .timeline::before{display:none;}
  .tl-item{padding-top:0;padding-left:22px;border-left:1px solid var(--c-border);padding-bottom:8px;}
  .tl-node{left:-5px;top:4px;}
}

/* ---------- 最新更新列表 ---------- */
.update-list{border-top:1px solid var(--c-border);}
.update-item{display:flex;align-items:baseline;gap:20px;padding:18px 0;border-bottom:1px solid var(--c-border);transition:background-color .18s ease-out;}
.update-item:hover{background:var(--c-bg);}
.update-date{flex:0 0 130px;font-family:var(--mono);font-size:13px;color:var(--c-text-3);}
.update-text{font-size:15px;color:var(--c-text-2);}
.update-text strong{color:var(--c-text);font-weight:600;}
@media (max-width:575px){.update-item{flex-direction:column;gap:4px;}}

/* ---------- 排行 ---------- */
.rank-list{border-top:1px solid var(--c-border);}
.rank-item{display:flex;align-items:center;gap:18px;padding:16px 8px;border-bottom:1px solid var(--c-border);transition:background-color .18s ease-out;}
.rank-item:hover{background:var(--c-bg);}
.rank-no{flex:0 0 34px;font-family:var(--mono);font-size:16px;font-weight:700;color:var(--c-blue);}
.rank-title{flex:1 1 auto;font-size:15.5px;font-weight:600;color:var(--c-text);}
.rank-sub{font-size:13px;color:var(--c-text-3);font-weight:400;margin-left:8px;}
.rank-value{font-family:var(--mono);font-size:14px;color:var(--c-text-2);white-space:nowrap;}
.rank-item:hover .rank-title{color:var(--c-blue);}

/* ---------- 快速解答 ---------- */
.qa-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px 32px;}
.qa-item{border-left:3px solid var(--c-blue);padding:2px 0 2px 18px;}
.qa-q{font-size:16px;font-weight:600;color:var(--c-blue-dark);}
.qa-a{margin-top:8px;font-size:15px;color:var(--c-text-2);}
@media (max-width:767px){.qa-grid{grid-template-columns:1fr;}}

/* ---------- 误区澄清 ---------- */
.myth{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--c-border);border-radius:var(--radius-card);overflow:hidden;background:#fff;}
.myth + .myth{margin-top:16px;}
.myth-wrong,.myth-right{padding:20px 22px;}
.myth-wrong{background:var(--c-bg);border-right:1px solid var(--c-border);}
.myth-right{background:var(--c-blue-soft);}
.myth-tag{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--c-text-3);}
.myth-right .myth-tag{color:var(--c-blue);}
.myth p{margin-top:8px;font-size:15px;color:var(--c-text-2);}
.myth-right p{color:var(--c-blue-dark);}
@media (max-width:767px){
  .myth{grid-template-columns:1fr;}
  .myth-wrong{border-right:0;border-bottom:1px solid var(--c-border);}
}

/* ---------- 口碑 ---------- */
.quote-card{height:100%;background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-card);padding:24px;transition:box-shadow .18s ease-out,transform .18s ease-out;}
.quote-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.quote-text{font-size:15.5px;color:var(--c-text);}
.quote-mark{font-family:var(--mono);font-size:22px;color:var(--c-yellow);line-height:1;}
.quote-who{margin-top:16px;font-size:13px;color:var(--c-text-3);font-family:var(--mono);letter-spacing:.02em;}

/* ---------- 平台保障 ---------- */
.assure{background:#fff;border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border);}
.assure-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:0;}
.assure-item{padding:28px 20px;border-right:1px solid var(--c-border);}
.assure-item:last-child{border-right:0;}
.assure-icon{width:22px;height:22px;border:2px solid var(--c-blue);border-radius:0;position:relative;margin-bottom:14px;}
.assure-item:nth-child(2) .assure-icon{border-color:var(--c-yellow);}
.assure-item h3{font-size:16px;font-weight:600;}
.assure-item p{margin-top:8px;font-size:13.5px;color:var(--c-text-2);}
@media (max-width:991px){
  .assure-grid{grid-template-columns:1fr 1fr;}
  .assure-item{border-bottom:1px solid var(--c-border);}
  .assure-item:nth-child(2n){border-right:0;}
}
@media (max-width:575px){.assure-grid{grid-template-columns:1fr;}.assure-item{border-right:0;}}

/* ---------- 专题入口 ---------- */
.topic-feature{display:flex;flex-direction:column;justify-content:space-between;background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;height:100%;transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;}
.topic-feature:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:rgba(30,91,216,.3);}
.topic-feature img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--c-blue-soft);}
.topic-feature .tb{padding:24px;}

/* ---------- FAQ ---------- */
.faq-wrap{border-top:1px solid var(--c-border);}
.faq-item{border-bottom:1px solid var(--c-border);}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;background:none;border:0;text-align:left;padding:22px 4px;font-size:17px;font-weight:600;color:var(--c-text);cursor:pointer;transition:color .18s ease-out;}
.faq-q:hover{color:var(--c-blue);}
.faq-q[aria-expanded="true"]{color:var(--c-blue-dark);}
.faq-icon{position:relative;flex:0 0 14px;width:14px;height:14px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-blue);transition:transform .18s ease-out;}
.faq-icon::before{left:0;top:6px;width:14px;height:2px;}
.faq-icon::after{left:6px;top:0;width:2px;height:14px;}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:scaleY(0);}
.faq-a{font-size:15px;color:var(--c-text-2);}
.faq-a .inner{background:var(--c-bg);border-radius:8px;padding:16px 18px;margin:0 0 22px;}
.collapsing{transition:height .2s ease-out;}

/* ---------- 表单 ---------- */
.form-panel{max-width:880px;margin:0 auto;background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:32px;}
.form-label{font-size:13px;color:var(--c-text-2);margin-bottom:6px;}
.form-req{color:var(--c-yellow);font-family:var(--mono);}
.privacy-note{margin-top:16px;font-size:12px;color:var(--c-text-3);line-height:1.7;}
@media (max-width:575px){.form-panel{padding:22px;}}

/* ---------- 收尾 CTA ---------- */
.cta-strip{background:var(--c-blue-dark);color:#fff;padding:56px 0;}
.cta-strip-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.cta-strip p{font-size:18px;font-weight:600;color:#fff;max-width:720px;}
.cta-strip .btn{background:var(--c-yellow);border-color:var(--c-yellow);color:#3A2E00;font-weight:700;}
.cta-strip .btn:hover{background:#E0A800;border-color:#E0A800;color:#3A2E00;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg);border-top:1px solid var(--c-border);padding:64px 0 0;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--c-text);}
.footer-desc{margin-top:14px;font-size:14px;color:var(--c-text-2);max-width:320px;}
.footer-title{font-size:13px;font-family:var(--mono);letter-spacing:.06em;color:var(--c-text-3);margin-bottom:14px;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:14.5px;color:var(--c-text-2);}
.footer-list a:hover{color:var(--c-blue);}
.footer-bottom{margin-top:48px;border-top:1px solid var(--c-border);padding:20px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;}
.footer-bottom span{font-family:var(--mono);font-size:12px;color:var(--c-text-3);letter-spacing:.02em;}
@media (max-width:767px){.site-footer{padding-top:44px;}.footer-bottom{margin-top:32px;}}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
  .reveal{opacity:1;transform:none;}
}
.sticky-cta{display:none;}
@media (max-width:575px){
  .sticky-cta{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:999;height:56px;align-items:center;justify-content:space-between;gap:12px;padding:0 16px;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-top:1px solid var(--c-border);}
  .sticky-cta span{font-size:13px;color:var(--c-text-2);}
  body{padding-bottom:56px;}
}

/* roulang page: category1 */
:root{
 --c-blue:#1E5BD8;
 --c-blue-dark:#143C8C;
 --c-blue-hover:#1748B0;
 --c-blue-soft:#EAF0FE;
 --c-yellow:#F2B705;
 --c-yellow-soft:#FFF6DB;
 --c-bg:#F7F9FC;
 --c-white:#FFFFFF;
 --c-text:#101828;
 --c-text-2:#5A6C88;
 --c-text-3:#8A98AD;
 --c-border:#E4EAF3;
 --c-green:#12A594;
 --radius-card:10px;
 --radius-btn:8px;
 --radius-chip:4px;
 --shadow-card:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.06);
 --shadow-hover:0 2px 4px rgba(16,24,40,.06),0 14px 34px rgba(16,24,40,.10);
 --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
 --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
 --sec-y:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
 margin:0;
 font-family:var(--sans);
 font-size:16px;
 line-height:1.75;
 color:var(--c-text);
 background:var(--c-white);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-blue);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--c-blue-hover);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-blue);outline-offset:2px;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin-right:auto;margin-left:auto;}
.row{--bs-gutter-x:24px;}
.mono{font-family:var(--mono);letter-spacing:.02em;}
.sec{padding:var(--sec-y) 0;}
.sec--alt{background:var(--c-bg);}
.sec--tight{padding:64px 0;}
.sec-head{margin-bottom:36px;}
.section-title{font-size:clamp(24px,3vw,32px);font-weight:700;letter-spacing:-.01em;display:flex;align-items:center;gap:12px;flex-wrap:wrap;line-height:1.35;}
.section-title .px-ico{width:10px;height:10px;flex:0 0 10px;background:linear-gradient(180deg,var(--c-blue) 0 5px,var(--c-yellow) 5px 10px);}
.section-sub{margin-top:12px;font-size:16px;color:var(--c-text-2);max-width:760px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--c-blue-dark);background:var(--c-yellow-soft);border:1px solid #F3E2A8;border-radius:var(--radius-chip);padding:4px 10px;}
.dot-texture{
 background-image:radial-gradient(circle, rgba(30,91,216,.10) 1px, transparent 1px);
 background-size:14px 14px;
}
/* ---------- 按钮 / 标签 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:14px 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;}
.btn-primary{background:var(--c-blue);color:#fff;border-color:var(--c-blue);}
.btn-primary:hover{background:var(--c-blue-hover);border-color:var(--c-blue-hover);color:#fff;transform:translateY(-1px);}
.btn-primary:active{background:var(--c-blue-dark);transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-blue);border-color:#BDD0F5;}
.btn-ghost:hover{background:var(--c-blue-soft);color:var(--c-blue-hover);border-color:var(--c-blue);transform:translateY(-1px);}
.btn-sm{height:38px;padding:10px 16px;font-size:14px;}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.04em;line-height:1;padding:7px 11px;border-radius:var(--radius-chip);border:1px solid var(--c-border);background:#fff;color:var(--c-text-2);cursor:pointer;transition:border-color .18s ease-out,color .18s ease-out,background-color .18s ease-out;}
.chip:hover{border-color:var(--c-blue);color:var(--c-blue);background:var(--c-blue-soft);}
.chip--on{background:var(--c-blue-soft);border-color:#BDD0F5;color:var(--c-blue-dark);}
.chip--yellow{background:var(--c-yellow-soft);border-color:#F3E2A8;color:var(--c-blue-dark);}
/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--c-border);transition:box-shadow .2s ease-out;}
.site-header.is-stuck{box-shadow:0 1px 2px rgba(16,24,40,.06);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--c-text);letter-spacing:.01em;}
.brand:hover{color:var(--c-blue);}
.brand .px-mark{width:16px;height:16px;flex:0 0 16px;background:linear-gradient(180deg,var(--c-blue) 0 8px,var(--c-yellow) 8px 16px);}
.brand-sub{font-family:var(--mono);font-size:11px;color:var(--c-text-3);letter-spacing:.06em;border-left:1px solid var(--c-border);padding-left:10px;}
.nav-center{display:flex;align-items:center;}
.nav-list{display:flex;align-items:center;gap:32px;}
.nav-list a{position:relative;display:block;font-size:15px;font-weight:500;color:var(--c-text-2);padding:8px 0;}
.nav-list a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-blue);transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out;}
.nav-list a:hover{color:var(--c-blue);}
.nav-list a:hover::after{transform:scaleX(1);}
.nav-list a.active{color:var(--c-text);}
.nav-list a.active::after{transform:scaleX(1);}
.nav-list a.active::before{content:"";position:absolute;right:-9px;top:50%;width:4px;height:4px;background:var(--c-yellow);transform:translateY(-50%);}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--c-border);border-radius:var(--radius-btn);background:#fff;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);transition:transform .18s ease-out,opacity .18s ease-out;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
/* ---------- 分类头区 ---------- */
.cat-hero{position:relative;background:var(--c-bg);border-bottom:1px solid var(--c-border);padding:44px 0 48px;overflow:hidden;}
.cat-hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(circle, rgba(30,91,216,.10) 1px, transparent 1px);background-size:16px 16px;opacity:.5;pointer-events:none;}
.cat-hero .container{position:relative;z-index:1;}
.breadcrumb-line{font-size:13px;color:var(--c-text-3);margin-bottom:18px;}
.breadcrumb-line a{color:var(--c-text-2);}
.breadcrumb-line a:hover{color:var(--c-blue);}
.breadcrumb-line .sep{margin:0 8px;color:var(--c-text-3);}
.cat-hero h1{font-size:clamp(28px,3.6vw,42px);font-weight:700;line-height:1.28;letter-spacing:-.01em;margin-bottom:16px;}
.cat-hero h1 .hl{color:var(--c-blue-dark);}
.cat-lead{font-size:16px;color:var(--c-text-2);max-width:640px;}
.cat-hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.cat-banner{border:1px solid var(--c-border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);background:#EAF0FE;}
.cat-banner img{width:100%;height:240px;object-fit:cover;}
/* ---------- 速览指标条 ---------- */
.stat-bar{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--c-border);border-radius:var(--radius-card);background:#fff;box-shadow:var(--shadow-card);overflow:hidden;}
.stat-cell{padding:22px 24px;border-right:1px solid var(--c-border);}
.stat-cell:last-child{border-right:0;}
.stat-num{font-family:var(--mono);font-size:34px;font-weight:600;line-height:1.1;color:var(--c-blue-dark);letter-spacing:-.02em;}
.stat-num .unit{font-size:15px;color:var(--c-text-2);margin-left:4px;}
.stat-label{font-size:13px;color:var(--c-text-2);margin-top:8px;}
.stat-note{font-family:var(--mono);font-size:11px;color:var(--c-text-3);margin-top:6px;}
.stat-num.is-yellow{color:#B98700;}
/* ---------- 筛选工具条 ---------- */
.filter-bar{border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border);padding:16px 0;}
.filter-inner{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.filter-label{font-size:13px;color:var(--c-text-3);letter-spacing:.04em;margin-right:4px;}
/* ---------- 列表主体 ---------- */
.entry-list{border-top:1px solid var(--c-border);}
.entry-item{display:flex;gap:22px;padding:22px 16px;min-height:132px;border-bottom:1px solid var(--c-border);transition:background-color .18s ease-out;border-radius:6px;}
.entry-item:hover{background:var(--c-bg);}
.entry-item:hover .entry-title{color:var(--c-blue);}
.entry-thumb{flex:0 0 200px;width:200px;height:120px;border-radius:8px;overflow:hidden;border:1px solid var(--c-border);background:#EAF0FE;}
.entry-thumb img{width:100%;height:100%;object-fit:cover;}
.entry-body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;justify-content:center;}
.entry-title{font-size:18px;font-weight:600;line-height:1.45;color:var(--c-text);transition:color .18s ease-out;}
.entry-desc{margin-top:8px;font-size:14px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.entry-meta{margin-top:12px;font-family:var(--mono);font-size:12px;color:var(--c-text-3);display:flex;flex-wrap:wrap;gap:16px;}
.entry-meta .up{color:var(--c-green);}
.list-more{display:flex;justify-content:center;padding-top:32px;}
/* ---------- 导读 ---------- */
.guide-item{border-left:3px solid var(--c-blue);padding:4px 0 4px 18px;margin-bottom:20px;}
.guide-item:last-child{margin-bottom:0;}
.guide-item h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:6px;}
.guide-item p{font-size:15px;color:var(--c-text-2);}
/* ---------- 快速解答 ---------- */
.qa-single{border-left:3px solid var(--c-blue);padding-left:18px;margin-bottom:28px;}
.qa-single:last-child{margin-bottom:0;}
.qa-q{font-size:16px;font-weight:600;color:var(--c-blue-dark);line-height:1.6;margin-bottom:8px;}
.qa-a{font-size:15px;color:var(--c-text-2);line-height:1.8;}
/* ---------- FAQ ---------- */
.faq-wrap{border-top:1px solid var(--c-border);}
.faq-row{border-bottom:1px solid var(--c-border);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;background:transparent;border:0;padding:20px 4px;font-size:16px;font-weight:600;color:var(--c-text);cursor:pointer;transition:color .18s ease-out;}
.faq-q:hover{color:var(--c-blue);}
.faq-q::after{content:"+";font-family:var(--mono);font-size:20px;line-height:1;color:var(--c-blue);flex:0 0 auto;}
.faq-q[aria-expanded="true"]{color:var(--c-blue-dark);}
.faq-q[aria-expanded="true"]::after{content:"–";}
.faq-a{background:var(--c-bg);border-radius:8px;padding:0 18px;font-size:15px;color:var(--c-text-2);}
.faq-a .faq-a-inner{padding:16px 0;}
/* ---------- 推荐卡 ---------- */
.rec-card{height:100%;background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;display:flex;flex-direction:column;}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(30,91,216,.3);}
.rec-cover{aspect-ratio:16/9;overflow:hidden;background:#EAF0FE;}
.rec-cover img{width:100%;height:100%;object-fit:cover;}
.rec-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.rec-body h3{font-size:18px;font-weight:600;line-height:1.5;}
.rec-body h3 a{color:var(--c-text);}
.rec-card:hover .rec-body h3 a{color:var(--c-blue);}
.rec-body p{font-size:14px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rec-meta{margin-top:auto;font-family:var(--mono);font-size:12px;color:var(--c-text-3);display:flex;justify-content:space-between;gap:12px;}
/* ---------- 转化条 ---------- */
.cta-band{background:var(--c-blue-soft);border:1px solid #CFDDF8;border-radius:var(--radius-card);padding:32px 34px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.cta-band h2{font-size:22px;font-weight:700;line-height:1.4;}
.cta-band p{font-size:14px;color:var(--c-text-2);margin-top:6px;}
/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg);border-top:1px solid var(--c-border);padding:64px 0 28px;margin-top:0;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--c-text);}
.footer-brand:hover{color:var(--c-blue);}
.footer-desc{font-size:14px;color:var(--c-text-2);margin-top:14px;max-width:340px;}
.footer-title{font-size:14px;font-weight:600;color:var(--c-text);margin-bottom:14px;}
.footer-list li{margin-bottom:10px;}
.footer-list a{font-size:14px;color:var(--c-text-2);}
.footer-list a:hover{color:var(--c-blue);}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid var(--c-border);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:var(--mono);font-size:12px;color:var(--c-text-3);}
/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
 .stat-bar{grid-template-columns:repeat(2,1fr);}
 .stat-cell:nth-child(2){border-right:0;}
 .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--c-border);}
}
@media (max-width:991.98px){
 :root{--sec-y:56px;}
 .brand-sub{display:none;}
 .nav-toggle{display:flex;}
 .nav-actions .btn{display:none;}
 .nav-center{position:fixed;left:0;right:0;top:72px;bottom:0;background:#fff;border-top:1px solid var(--c-border);padding:16px 24px 40px;overflow-y:auto;transform:translateY(-8px);opacity:0;pointer-events:none;transition:opacity .18s ease-out,transform .18s ease-out;display:block;}
 .nav-center.is-open{opacity:1;transform:none;pointer-events:auto;}
 .nav-list{flex-direction:column;align-items:stretch;gap:0;}
 .nav-list li{border-bottom:1px solid var(--c-border);}
 .nav-list a{font-size:17px;font-weight:600;color:var(--c-text);padding:16px 0;}
 .nav-list a::after{display:none;}
 .nav-list a.active{color:var(--c-blue);}
 .nav-list a.active::before{right:4px;width:6px;height:6px;}
 .cat-banner img{height:200px;}
}
@media (max-width:767.98px){
 :root{--sec-y:48px;}
 .container{padding-left:16px;padding-right:16px;}
 .cat-hero{padding:32px 0 36px;}
 .stat-cell{padding:18px;}
 .stat-num{font-size:26px;}
 .entry-item{flex-direction:column;gap:14px;padding:20px 8px;}
 .entry-thumb{flex:0 0 auto;width:100%;height:auto;aspect-ratio:16/9;}
 .entry-title{font-size:17px;}
 .cta-band{padding:24px 20px;}
 .cta-band h2{font-size:19px;}
 .site-footer{padding:48px 0 24px;}
 .footer-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
 *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}