/* roulang page: index */
:root{
  --blue:#1F5E8C;
  --blue-dark:#174A70;
  --coral:#EF6A7A;
  --coral-soft:#FDE8EB;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --mist:#EEF4FA;
  --ink:#0F1F2E;
  --muted:#4B5B6B;
  --line:#E2EAF2;
  --safe:#2F8F6B;
  --safe-soft:#E7F4EE;
  --footer:#0E2233;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow:0 12px 32px rgba(15,35,60,.07);
  --shadow-hover:0 18px 44px rgba(15,35,60,.12);
  --container:1240px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--blue);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--blue-dark);text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{font-weight:700;color:var(--ink);line-height:1.3;margin:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{max-width:var(--container);width:100%;padding-left:24px;padding-right:24px;margin:0 auto;}
.section{padding:92px 0;}
.section-mist{background:var(--mist);}
.section-white{background:#fff;}
.sec-head{max-width:790px;margin-bottom:44px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.04em;color:var(--blue);
  background:var(--mist);border:1px solid var(--line);
  padding:6px 14px;border-radius:999px;font-weight:600;margin-bottom:18px;
}
.sec-head h2{font-size:clamp(1.6rem,2.4vw,2.2rem);margin-bottom:14px;letter-spacing:-.01em;}
.sec-head p{color:var(--muted);font-size:16px;line-height:1.85;}
.text-muted-2{color:var(--muted);}

/* 按钮 */
.btn-main,.btn-coral,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:50px;padding:0 26px;border-radius:12px;font-size:15.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  line-height:1;
}
.btn-main{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(31,94,140,.20);}
.btn-main:hover{background:var(--blue-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(23,74,112,.26);}
.btn-coral{background:var(--coral);color:#fff;box-shadow:0 8px 20px rgba(239,106,122,.26);}
.btn-coral:hover{background:#e3566a;color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(227,86,106,.3);}
.btn-ghost{background:transparent;color:var(--blue);border-color:#C9DBEA;}
.btn-ghost:hover{background:var(--mist);color:var(--blue-dark);border-color:var(--blue);}
.btn-soft{background:#fff;color:var(--blue);border-color:var(--line);box-shadow:var(--shadow);}
.btn-soft:hover{background:var(--mist);color:var(--blue-dark);}
.btn-main:focus-visible,.btn-coral:focus-visible,.btn-ghost:focus-visible,.btn-soft:focus-visible{
  outline:2px solid var(--coral);outline-offset:2px;
}
.btn-main:active,.btn-coral:active,.btn-ghost:active,.btn-soft:active{transform:translateY(1px);}
.btn-block{width:100%;}

/* 徽章 */
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:6px 12px;border-radius:999px;}
.chip-blue{background:var(--mist);color:var(--blue);}
.chip-coral{background:var(--coral-soft);color:#C84257;}
.chip-safe{background:var(--safe-soft);color:var(--safe);}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease;
}
.site-header.scrolled{box-shadow:0 8px 26px rgba(15,35,60,.08);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);flex-shrink:0;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:40px;height:40px;border-radius:12px;background:linear-gradient(150deg,var(--blue),var(--blue-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;
  box-shadow:0 6px 16px rgba(31,94,140,.28);flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:16.5px;font-weight:700;letter-spacing:-.01em;}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.06em;margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  padding:9px 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--ink);
  transition:background .18s ease,color .18s ease;white-space:nowrap;
}
.nav-link:hover{background:var(--mist);color:var(--blue);}
.nav-link.active{color:var(--blue);background:var(--mist);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-mega{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:7px;height:42px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:10px;color:var(--ink);
  font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease;
}
.mega-toggle:hover{border-color:var(--blue);color:var(--blue);background:var(--mist);}
.mega-toggle:focus-visible{outline:2px solid var(--coral);outline-offset:2px;}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:720px;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:0 26px 60px rgba(15,35,60,.18);
  padding:26px;display:grid;grid-template-columns:1fr 1fr;gap:26px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
  z-index:1050;
}
.nav-mega:hover .mega-panel,.nav-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-title{font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.08em;margin-bottom:14px;}
.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.mega-card{
  display:block;padding:12px 14px;border:1px solid var(--line);border-radius:12px;
  background:#fff;transition:all .18s ease;
}
.mega-card:hover{border-color:#BFD5E7;background:var(--mist);transform:translateY(-2px);}
.mega-card-name{display:block;font-size:14px;font-weight:600;color:var(--ink);}
.mega-card-desc{display:block;font-size:12.5px;color:var(--muted);margin-top:3px;line-height:1.5;}
.mega-news-item{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 0;border-bottom:1px dashed var(--line);
}
.mega-news-item:last-child{border-bottom:0;}
.mega-news-title{font-size:14px;color:var(--ink);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.mega-news-item:hover .mega-news-title{color:var(--blue);}
.mega-news-date{font-size:12px;color:var(--muted);flex-shrink:0;font-variant-numeric:tabular-nums;}
.mega-empty{font-size:13px;color:var(--muted);}
.nav-burger{
  display:none;width:44px;height:44px;border-radius:11px;border:1px solid var(--line);
  background:#fff;color:var(--ink);align-items:center;justify-content:center;font-size:17px;
}
.offcanvas{border:0;}
.offcanvas-body .nav-link{display:block;padding:12px 10px;font-size:16px;}
.mobile-group-title{font-size:12.5px;letter-spacing:.08em;color:var(--muted);font-weight:700;margin:18px 0 6px;padding-left:10px;}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  padding:104px 0 96px;
  background-color:#EEF4FA;
  background-image:linear-gradient(180deg,rgba(247,249,252,.95) 0%,rgba(238,244,250,.93) 55%,rgba(247,249,252,.98) 100%),url("/assets/images/948f2c6865f54554.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(239,106,122,.13),rgba(239,106,122,0) 68%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.hero-badges{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:22px;}
.hero h1{
  font-size:clamp(2.1rem,3.6vw,3.1rem);letter-spacing:-.02em;line-height:1.26;margin-bottom:20px;
}
.hero h1 .hl{color:var(--blue);}
.hero-lead{font-size:16.5px;color:var(--muted);line-height:1.9;max-width:620px;margin-bottom:18px;}
.hero-sub{font-size:17px;font-weight:600;color:var(--blue-dark);margin-bottom:22px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:22px;}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);font-weight:500;}
.hero-trust i{color:var(--safe);font-size:14px;}
.hero-panel{
  background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);
  padding:26px 26px 22px;
}
.hero-panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.hero-panel-head h2{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:0;}
.hero-panel-head span{font-size:12px;color:var(--muted);}
.hero-list li{
  display:flex;gap:13px;padding:13px 0;border-bottom:1px dashed var(--line);
}
.hero-list li:last-child{border-bottom:0;padding-bottom:4px;}
.hero-list .ico{
  width:36px;height:36px;border-radius:11px;background:var(--mist);color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0;
}
.hero-list strong{display:block;font-size:14.5px;color:var(--ink);font-weight:600;}
.hero-list span{font-size:13px;color:var(--muted);line-height:1.6;}
.hero-panel-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line);}
.hero-panel-foot .meta{font-size:12.5px;color:var(--muted);}

/* 问题陈述 */
.issue-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start;}
.issue-list{display:grid;gap:14px;}
.issue-item{
  display:flex;gap:16px;padding:22px 24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.issue-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#CFE0EE;}
.issue-item .num{
  font-size:15px;font-weight:700;color:var(--blue);background:var(--mist);
  width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;flex-shrink:0;
  font-variant-numeric:tabular-nums;
}
.issue-item h3{font-size:16px;margin-bottom:6px;}
.issue-item p{font-size:14.5px;color:var(--muted);line-height:1.78;}
.issue-aside{
  background:var(--blue);color:#fff;border-radius:22px;padding:32px 30px;
  box-shadow:0 18px 44px rgba(23,74,112,.24);position:relative;overflow:hidden;
}
.issue-aside::after{
  content:"";position:absolute;right:-60px;bottom:-70px;width:200px;height:200px;border-radius:50%;
  background:rgba(255,255,255,.08);
}
.issue-aside h3{color:#fff;font-size:19px;margin-bottom:14px;position:relative;z-index:2;}
.issue-aside p{color:rgba(255,255,255,.82);font-size:14.5px;line-height:1.85;position:relative;z-index:2;}
.issue-aside .aside-list{margin-top:20px;display:grid;gap:11px;position:relative;z-index:2;}
.issue-aside .aside-list li{display:flex;gap:10px;font-size:14px;color:#fff;}
.issue-aside .aside-list i{color:#FFD5DB;margin-top:4px;}

/* 功能矩阵 */
.feature-matrix{display:grid;grid-template-columns:1.12fr .88fr;grid-template-rows:auto auto;gap:20px;}
.fcard{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);padding:28px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.fcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#CFE0EE;}
.fcard-lg{grid-row:span 2;}
.fcard .ico-box{
  width:46px;height:46px;border-radius:13px;background:var(--mist);color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:18px;
}
.fcard-lg .ico-box{background:var(--coral-soft);color:#C84257;}
.fcard h3{font-size:19px;margin-bottom:10px;}
.fcard p{font-size:14.5px;color:var(--muted);line-height:1.85;}
.fcard .fimg{
  margin-top:auto;padding-top:22px;
}
.fcard .fimg img{border-radius:14px;aspect-ratio:16/9;object-fit:cover;width:100%;}
.fcard-link{
  display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--blue);margin-top:16px;
}
.fcard-link:hover{color:var(--blue-dark);gap:11px;}

/* 安全隐私 */
.safety-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.safety-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;
  box-shadow:0 8px 24px rgba(15,35,60,.05);transition:transform .22s ease,box-shadow .22s ease;
}
.safety-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.safety-card .ico-box{
  width:42px;height:42px;border-radius:12px;background:var(--safe-soft);color:var(--safe);
  display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:16px;
}
.safety-card h3{font-size:16px;margin-bottom:8px;}
.safety-card p{font-size:14px;color:var(--muted);line-height:1.75;}

/* 场景 */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);display:flex;transition:transform .22s ease,box-shadow .22s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.scene-card:nth-child(even){flex-direction:row-reverse;}
.scene-media{width:42%;flex-shrink:0;overflow:hidden;}
.scene-media img{width:100%;height:100%;min-height:190px;object-fit:cover;transition:transform .3s ease;}
.scene-card:hover .scene-media img{transform:scale(1.03);}
.scene-body{padding:24px;display:flex;flex-direction:column;}
.scene-body h3{font-size:17.5px;margin:10px 0 8px;}
.scene-body p{font-size:14.5px;color:var(--muted);line-height:1.8;}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;position:relative;}
.steps::before{
  content:"";position:absolute;top:26px;left:12%;right:12%;height:2px;
  background:linear-gradient(90deg,#D7E4F0,#D7E4F0);z-index:0;
}
.step{position:relative;z-index:1;text-align:center;padding:0 18px;}
.step-dot{
  width:52px;height:52px;border-radius:50%;background:var(--blue);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;
  margin:0 auto 18px;box-shadow:0 0 0 8px #fff,0 10px 24px rgba(31,94,140,.24);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:16.5px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);line-height:1.78;max-width:280px;margin:0 auto;}

/* 演示 */
.demo-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center;}
.demo-steps{display:grid;gap:16px;margin-top:26px;}
.demo-step{
  display:flex;gap:14px;padding:18px 20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-md);transition:border-color .2s ease,transform .2s ease;
}
.demo-step:hover{border-color:#C6DAEA;transform:translateX(3px);}
.demo-step i{color:var(--blue);font-size:16px;margin-top:4px;}
.demo-step strong{display:block;font-size:15px;margin-bottom:4px;}
.demo-step span{font-size:13.8px;color:var(--muted);line-height:1.7;}
.demo-shot{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.demo-shot figure{margin:0;}
.demo-shot img{
  border-radius:24px;box-shadow:0 20px 44px rgba(15,35,60,.16);width:100%;
  aspect-ratio:3/4;object-fit:cover;
}
.demo-shot figcaption{font-size:13px;color:var(--muted);margin-top:10px;text-align:center;}
.demo-shot figure:nth-child(2){transform:translateY(28px);}

/* 故事 */
.story-list{display:grid;gap:18px;}
.story-card{
  display:grid;grid-template-columns:104px 1fr auto;gap:22px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px 26px;
  box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;
}
.story-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.story-avatar{
  width:76px;height:76px;border-radius:20px;overflow:hidden;flex-shrink:0;
}
.story-avatar img{width:100%;height:100%;object-fit:cover;}
.story-card h3{font-size:16.5px;margin:7px 0 6px;}
.story-card p{font-size:14.5px;color:var(--muted);line-height:1.8;}
.story-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.story-cta{flex-shrink:0;}

/* 套餐 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch;}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px 28px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .22s ease,box-shadow .22s ease;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.price-card.featured{
  border:2px solid var(--blue);transform:translateY(-8px);
  box-shadow:0 22px 52px rgba(31,94,140,.16);position:relative;
}
.price-card.featured:hover{transform:translateY(-11px);}
.price-flag{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  background:var(--coral);color:#fff;font-size:12.5px;font-weight:700;
  padding:6px 16px;border-radius:999px;white-space:nowrap;box-shadow:0 8px 18px rgba(239,106,122,.3);
}
.price-card h3{font-size:18px;margin-bottom:6px;}
.price-card .price-desc{font-size:13.5px;color:var(--muted);margin-bottom:18px;}
.price-value{
  font-size:15px;font-weight:600;color:var(--blue);background:var(--mist);
  padding:10px 14px;border-radius:10px;margin-bottom:20px;display:inline-block;
}
.price-list{display:grid;gap:11px;margin-bottom:26px;flex-grow:1;}
.price-list li{display:flex;gap:10px;font-size:14.3px;color:var(--muted);line-height:1.65;}
.price-list i{color:var(--safe);font-size:14px;margin-top:3px;}

/* 评价墙 */
.review-wall{columns:3;column-gap:20px;}
.review-card{
  break-inside:avoid;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow);margin-bottom:20px;transition:transform .22s ease,box-shadow .22s ease;
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.review-avatar{
  width:42px;height:42px;border-radius:50%;background:var(--mist);color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex-shrink:0;
}
.review-name{font-size:14.5px;font-weight:600;color:var(--ink);}
.review-meta{font-size:12.5px;color:var(--muted);}
.stars{color:#F0A93B;font-size:12.5px;letter-spacing:2px;margin-bottom:9px;}
.review-card p{font-size:14.4px;color:var(--muted);line-height:1.85;}
.review-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px;}

/* 口碑指标 */
.metric-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;}
.metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.metric-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;
  box-shadow:0 8px 22px rgba(15,35,60,.05);
}
.metric-card .label{font-size:13px;color:var(--muted);margin-bottom:8px;}
.metric-card .value{font-size:20px;font-weight:700;color:var(--blue);letter-spacing:-.01em;}
.metric-card .hint{font-size:12.5px;color:var(--muted);margin-top:6px;line-height:1.6;}
.voice-card{
  background:var(--blue);color:#fff;border-radius:22px;padding:34px 32px;
  box-shadow:0 20px 48px rgba(23,74,112,.24);position:relative;overflow:hidden;
}
.voice-card::after{
  content:"";position:absolute;left:-50px;top:-60px;width:200px;height:200px;border-radius:50%;
  background:rgba(255,255,255,.07);
}
.voice-card h3{color:#fff;font-size:19px;margin-bottom:14px;position:relative;z-index:2;}
.voice-card p{color:rgba(255,255,255,.85);font-size:14.6px;line-height:1.9;position:relative;z-index:2;}
.voice-badges{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px;position:relative;z-index:2;}
.voice-badges span{
  font-size:12.5px;padding:6px 13px;border-radius:999px;
  background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.2);
}

/* 分类入口 */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.cat-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;height:100%;
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#C6DAEA;}
.cat-card .ico-box{
  width:42px;height:42px;border-radius:12px;background:var(--mist);color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:16px;
}
.cat-card h3{font-size:16px;margin-bottom:8px;}
.cat-card p{font-size:13.8px;color:var(--muted);line-height:1.72;flex-grow:1;}
.cat-card .arrow{font-size:13px;color:var(--blue);font-weight:600;margin-top:16px;display:inline-flex;align-items:center;gap:6px;}
.cat-card:hover .arrow{gap:10px;}

/* 资讯列表 */
.news-top{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;}
.news-list{display:grid;gap:18px;}
.news-item{
  display:grid;grid-template-columns:250px 1fr;gap:24px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;
}
.news-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.news-thumb{overflow:hidden;}
.news-thumb img{width:100%;height:100%;min-height:172px;object-fit:cover;transition:transform .3s ease;}
.news-item:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:24px 26px 24px 0;display:flex;flex-direction:column;}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:10px;flex-wrap:wrap;}
.news-meta .date{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums;}
.news-body h3{font-size:17.5px;margin-bottom:9px;line-height:1.5;}
.news-body h3 a{color:var(--ink);}
.news-body h3 a:hover{color:var(--blue);}
.news-body p{font-size:14.3px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-more{margin-top:auto;padding-top:14px;font-size:13.5px;font-weight:600;color:var(--blue);display:inline-flex;align-items:center;gap:7px;}
.news-more:hover{gap:11px;}
.news-empty{
  background:#fff;border:1px dashed #C6DAEA;border-radius:var(--radius-lg);
  padding:56px 24px;text-align:center;
}
.news-empty i{font-size:30px;color:#B7CBDC;margin-bottom:14px;display:block;}
.news-empty p{font-size:14.5px;color:var(--muted);margin-bottom:18px;}

/* FAQ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-acc .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-md) !important;margin-bottom:14px;
  overflow:hidden;background:#fff;box-shadow:0 6px 18px rgba(15,35,60,.04);
}
.faq-acc .accordion-button{
  background:#fff;color:var(--ink);font-size:16px;font-weight:600;padding:20px 24px;
  box-shadow:none;border-radius:var(--radius-md) !important;
}
.faq-acc .accordion-button:not(.collapsed){background:var(--mist);color:var(--blue-dark);}
.faq-acc .accordion-button:focus{box-shadow:0 0 0 3px rgba(31,94,140,.16);border-color:var(--blue);}
.faq-acc .accordion-button::after{
  background-image:none;content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:14px;color:var(--blue);transform:none;transition:transform .2s ease;
  width:auto;height:auto;display:flex;align-items:center;justify-content:center;
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"\f068";transform:rotate(0);}
.faq-acc .accordion-body{padding:18px 24px 24px;font-size:14.6px;color:var(--muted);line-height:1.88;}

/* 公约 */
.rule-band{
  background:#fff;border:1px solid var(--line);border-radius:22px;padding:36px;
  box-shadow:var(--shadow);
}
.rule-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 34px;margin-top:24px;}
.rule-grid li{display:flex;gap:11px;font-size:14.6px;color:var(--muted);line-height:1.8;}
.rule-grid i{color:var(--safe);font-size:14px;margin-top:5px;}

/* CTA */
.cta-band{
  background:linear-gradient(135deg,#174A70 0%,#1F5E8C 62%,#2A6E9E 100%);
  border-radius:26px;padding:56px 52px;color:#fff;position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;
  box-shadow:0 24px 56px rgba(23,74,112,.28);
}
.cta-band::after{
  content:"";position:absolute;right:-90px;bottom:-110px;width:320px;height:320px;border-radius:50%;
  background:rgba(255,255,255,.07);
}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,2.4vw,2.05rem);margin-bottom:14px;position:relative;z-index:2;}
.cta-band p{color:rgba(255,255,255,.84);font-size:15px;line-height:1.88;position:relative;z-index:2;max-width:600px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;position:relative;z-index:2;}
.cta-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5);}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.cta-side{
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);
  border-radius:18px;padding:24px;position:relative;z-index:2;
}
.cta-side img{border-radius:12px;aspect-ratio:4/3;object-fit:cover;margin-bottom:16px;}
.cta-side p{font-size:13.5px;color:rgba(255,255,255,.82);}

/* 页脚 */
.site-footer{background:var(--footer);color:#C6D5E2;padding:70px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(150deg,#2A6E9E,#1F5E8C);box-shadow:none;}
.footer-brand .brand-name{color:#fff;font-size:16px;}
.footer-brand .brand-sub{color:#8FA6BA;}
.footer-desc{font-size:14px;line-height:1.85;color:#9FB5C7;max-width:330px;}
.footer-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.footer-badges span{
  font-size:12px;padding:5px 11px;border-radius:999px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);color:#C6D5E2;
}
.footer-col h4{color:#fff;font-size:14.5px;margin-bottom:16px;letter-spacing:.02em;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:#9FB5C7;transition:color .18s ease;}
.footer-col a:hover{color:var(--coral);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:#7E97AC;
}
.footer-bottom a{color:#9FB5C7;}
.footer-bottom a:hover{color:var(--coral);}

/* 响应式 */
@media (max-width:1199.98px){
  .section{padding:78px 0;}
  .hero{padding:88px 0 80px;}
  .mega-panel{width:640px;}
  .footer-grid{gap:30px;}
}
@media (max-width:991.98px){
  .nav-links,.nav-mega{display:none;}
  .nav-burger{display:flex;}
  .nav-right .btn-main{display:none;}
  .hero-inner{grid-template-columns:1fr;gap:38px;}
  .hero{padding:64px 0 68px;}
  .issue-grid,.demo-grid,.metric-wrap,.cta-band{grid-template-columns:1fr;gap:30px;}
  .feature-matrix{grid-template-columns:1fr;}
  .fcard-lg{grid-row:auto;}
  .safety-grid{grid-template-columns:1fr 1fr;}
  .cat-grid{grid-template-columns:1fr 1fr;}
  .price-grid{grid-template-columns:1fr;gap:18px;}
  .price-card.featured{transform:none;}
  .price-card.featured:hover{transform:translateY(-4px);}
  .review-wall{columns:2;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .steps{grid-template-columns:1fr;gap:32px;}
  .steps::before{display:none;}
  .story-card{grid-template-columns:76px 1fr;}
  .story-cta{grid-column:1/-1;}
  .cta-band{padding:40px 32px;}
  .demo-shot figure:nth-child(2){transform:none;}
  .news-item{grid-template-columns:200px 1fr;}
  .news-body{padding:20px 22px 20px 0;}
}
@media (max-width:767.98px){
  .section{padding:58px 0;}
  .container{padding-left:18px;padding-right:18px;}
  .hero h1{font-size:clamp(1.75rem,6vw,2.3rem);}
  .hero-lead{font-size:15.5px;}
  .sec-head{margin-bottom:32px;}
  .safety-grid,.cat-grid,.metric-grid,.rule-grid,.scene-grid{grid-template-columns:1fr;}
  .scene-card,.scene-card:nth-child(even){flex-direction:column;}
  .scene-media{width:100%;}
  .scene-media img{min-height:180px;}
  .review-wall{columns:1;}
  .news-item{grid-template-columns:1fr;}
  .news-body{padding:20px 22px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .cta-band{padding:34px 24px;}
  .btn-main,.btn-coral,.btn-ghost,.btn-soft{width:100%;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .price-card{padding:26px 22px;}
  .story-card{grid-template-columns:1fr;padding:20px;}
  .story-avatar{width:64px;height:64px;}
}
@media (max-width:575.98px){
  body{font-size:16px;}
  .hero-trust{gap:14px;}
  .hero-trust li{font-size:12.8px;}
  .news-top{flex-direction:column;align-items:flex-start;}
  .demo-shot{grid-template-columns:1fr;}
  .demo-shot figure:nth-child(2){display:none;}
  .brand-name{font-size:14.5px;}
  .brand-sub{font-size:10.5px;}
}
a:focus-visible,button:focus-visible{outline:2px solid var(--coral);outline-offset:2px;}

/* roulang page: article */
:root{
  --blue:#1F5E8C;
  --blue-dark:#174A70;
  --coral:#EF6A7A;
  --coral-soft:#FDE8EB;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --mist:#EEF4FA;
  --ink:#0F1F2E;
  --muted:#4B5B6B;
  --line:#E2EAF2;
  --safe:#2F8F6B;
  --safe-soft:#E7F4EE;
  --footer:#0E2233;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow:0 12px 32px rgba(15,35,60,.07);
  --shadow-hover:0 18px 44px rgba(15,35,60,.12);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--blue);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--blue-dark);text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;}
.container{max-width:var(--container);width:100%;padding-left:24px;padding-right:24px;margin:0 auto;}
.section{padding:92px 0;}
.section-mist{background:var(--mist);}
.section-white{background:#fff;}
.section-head{max-width:820px;margin-bottom:38px;}
.section-head h2{
  font-size:clamp(1.6rem,2.4vw,2.2rem);
  font-weight:700;line-height:1.35;margin:0 0 12px;color:var(--ink);
}
.section-head p{color:var(--muted);margin:0;font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.04em;color:var(--blue);
  background:var(--mist);border:1px solid var(--line);
  padding:6px 14px;border-radius:999px;font-weight:600;margin-bottom:16px;
}
/* 按钮 */
.btn-main,.btn-coral,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:50px;padding:0 26px;border-radius:12px;font-size:15.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  line-height:1;
}
.btn-main{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(31,94,140,.20);}
.btn-main:hover{background:var(--blue-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(23,74,112,.26);}
.btn-coral{background:var(--coral);color:#fff;box-shadow:0 8px 20px rgba(239,106,122,.26);}
.btn-coral:hover{background:#e3566a;color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(227,86,106,.3);}
.btn-ghost{background:transparent;color:var(--blue);border-color:#C9DBEA;}
.btn-ghost:hover{background:var(--mist);color:var(--blue-dark);border-color:var(--blue);}
.btn-soft{background:#fff;color:var(--blue);border-color:var(--line);box-shadow:var(--shadow);}
.btn-soft:hover{background:var(--mist);color:var(--blue-dark);}
.btn-main:focus-visible,.btn-coral:focus-visible,.btn-ghost:focus-visible,.btn-soft:focus-visible{
  outline:2px solid var(--coral);outline-offset:2px;
}
.btn-main:active,.btn-coral:active,.btn-ghost:active,.btn-soft:active{transform:translateY(1px);}
.btn-block{width:100%;}
.btn-sm{height:42px;padding:0 18px;font-size:14px;border-radius:10px;}
/* 徽章 */
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:6px 12px;border-radius:999px;line-height:1.4;}
.chip-blue{background:var(--mist);color:var(--blue);}
.chip-coral{background:var(--coral-soft);color:#C84257;}
.chip-safe{background:var(--safe-soft);color:var(--safe);}
/* 导航 */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease;
}
.site-header.scrolled{box-shadow:0 8px 26px rgba(15,35,60,.08);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);flex-shrink:0;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:40px;height:40px;border-radius:12px;background:linear-gradient(150deg,var(--blue),var(--blue-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;
  box-shadow:0 6px 16px rgba(31,94,140,.28);flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:16.5px;font-weight:700;letter-spacing:-.01em;}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.06em;margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  padding:9px 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--ink);
  transition:background .18s ease,color .18s ease;white-space:nowrap;
}
.nav-link:hover{background:var(--mist);color:var(--blue);}
.nav-link.active{color:var(--blue);background:var(--mist);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-cta{height:44px;padding:0 20px;font-size:14.5px;border-radius:10px;}
.nav-mega{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:7px;height:44px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:10px;color:var(--ink);
  font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease;
}
.mega-toggle:hover{border-color:var(--blue);color:var(--blue);background:var(--mist);}
.mega-toggle:focus-visible{outline:2px solid var(--coral);outline-offset:2px;}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:700px;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:0 26px 60px rgba(15,35,60,.18);
  padding:24px;display:grid;grid-template-columns:1fr 1fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
  z-index:1050;
}
.nav-mega:hover .mega-panel,.nav-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-title{font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.08em;margin-bottom:12px;}
.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.mega-card{
  display:block;padding:12px 14px;border:1px solid var(--line);border-radius:12px;
  background:#fff;transition:all .18s ease;
}
.mega-card:hover{border-color:#BFD5E7;background:var(--mist);transform:translateY(-2px);}
.mega-card-name{display:block;font-size:14px;font-weight:600;color:var(--ink);}
.mega-card-desc{display:block;font-size:12.5px;color:var(--muted);margin-top:3px;line-height:1.5;}
.mega-news-item{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 0;border-bottom:1px dashed var(--line);
}
.mega-news-item:last-child{border-bottom:0;}
.mega-news-title{font-size:14px;color:var(--ink);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.mega-news-item:hover .mega-news-title{color:var(--blue);}
.mega-news-date{font-size:12px;color:var(--muted);flex-shrink:0;font-variant-numeric:tabular-nums;}
.nav-toggler{
  display:none;align-items:center;justify-content:center;width:44px;height:44px;
  border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);
  font-size:17px;cursor:pointer;
}
.nav-toggler:focus-visible{outline:2px solid var(--coral);outline-offset:2px;}
.mobile-drawer{background:#fff;border-top:1px solid var(--line);}
.mobile-nav{display:grid;gap:6px;padding:16px 0 22px;}
.mobile-link{
  display:block;padding:11px 14px;border-radius:10px;color:var(--ink);
  font-size:15px;font-weight:500;background:#fff;border:1px solid transparent;
}
.mobile-link:hover,.mobile-link:focus{background:var(--mist);color:var(--blue);}
.mobile-link.active{background:var(--mist);color:var(--blue);font-weight:600;}
.mobile-cta{margin-top:8px;width:100%;}
/* 文章页头 */
.article-hero{
  background:var(--mist);
  padding:36px 0 52px;
  border-bottom:1px solid var(--line);
  position:relative;
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,94,140,.10),rgba(31,94,140,0) 70%);
  pointer-events:none;
}
.breadcrumb-line{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13.5px;color:var(--muted);margin-bottom:20px;position:relative;z-index:1;
}
.breadcrumb-line a{color:var(--muted);}
.breadcrumb-line a:hover{color:var(--blue);}
.breadcrumb-line .sep{color:#B7C6D3;}
.breadcrumb-line .current{color:var(--ink);font-weight:500;}
.article-hero h1{
  font-size:clamp(1.7rem,3.1vw,2.5rem);
  font-weight:700;line-height:1.35;margin:0 0 18px;color:var(--ink);
  max-width:900px;position:relative;z-index:1;
}
.article-lead{
  max-width:820px;color:#33475a;font-size:16.5px;line-height:1.85;margin:0 0 24px;
  position:relative;z-index:1;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px 18px;
  font-size:13.5px;color:var(--muted);position:relative;z-index:1;
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--blue);font-size:13px;}
/* 主体布局 */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start;
}
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);padding:30px 34px;
}
.article-body{
  max-width:820px;font-size:17px;line-height:1.9;color:#22384a;
}
.article-body h2{
  font-size:clamp(1.35rem,2vw,1.7rem);font-weight:700;line-height:1.45;
  color:var(--ink);margin:2.2em 0 .9em;padding-bottom:.4em;border-bottom:1px solid var(--line);
}
.article-body h2:first-child{margin-top:0;}
.article-body h3{font-size:1.22rem;font-weight:600;color:var(--ink);margin:1.8em 0 .7em;line-height:1.5;}
.article-body h4{font-size:1.05rem;font-weight:600;color:var(--ink);margin:1.5em 0 .6em;}
.article-body p{margin:0 0 1.15em;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;}
.article-body li{margin-bottom:.5em;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--blue);
  background:var(--mist);border-radius:0 12px 12px 0;color:#2C455C;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:16px;margin:1.6em 0;height:auto;box-shadow:var(--shadow);}
.article-body a{color:var(--blue);text-decoration:underline;font-weight:500;text-underline-offset:3px;}
.article-body a:hover{color:var(--blue-dark);text-decoration-thickness:2px;}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top;}
.article-body th{background:var(--mist);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.empty-state{
  text-align:center;padding:56px 20px;border:1px dashed #C9DBEA;border-radius:var(--radius-lg);
  background:var(--mist);
}
.empty-state i{font-size:34px;color:#8FB0C9;margin-bottom:14px;display:block;}
.empty-state h2{font-size:1.35rem;margin:0 0 10px;color:var(--ink);border:0;padding:0;}
.empty-state p{color:var(--muted);margin:0 auto 22px;max-width:440px;font-size:15px;}
/* 侧栏 */
.article-side{position:sticky;top:96px;display:grid;gap:20px;}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);padding:22px 22px;
}
.side-card h3{
  font-size:14px;font-weight:700;color:var(--ink);margin:0 0 14px;
  display:flex;align-items:center;gap:8px;letter-spacing:.02em;
}
.side-card h3 i{color:var(--blue);font-size:13px;}
.side-list{list-style:none;padding:0;margin:0;display:grid;gap:10px;}
.side-list li{
  font-size:14px;color:var(--muted);line-height:1.6;padding-left:16px;position:relative;
}
.side-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:#BBD3E5;
}
.side-card .chip{margin-right:6px;margin-bottom:8px;}
.side-cta{
  background:linear-gradient(155deg,#1F5E8C,#174A70);
  color:#E8F1F9;border:0;
}
.side-cta h3{color:#fff;}
.side-cta h3 i{color:#9CC6E4;}
.side-cta p{font-size:13.5px;line-height:1.75;color:#C4DBEC;margin:0 0 16px;}
.side-cta .btn-coral{width:100%;height:46px;font-size:14.5px;}
/* 相关推荐 */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#CFE0EE;}
.related-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--mist);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.related-card:hover .related-thumb img{transform:scale(1.03);}
.related-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.related-body h3{
  font-size:15.5px;font-weight:600;line-height:1.55;color:var(--ink);margin:0;
  transition:color .2s ease;
}
.related-card:hover .related-body h3{color:var(--blue);}
.related-body p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.7;}
.related-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--muted);padding-top:6px;
}
.related-foot i{color:var(--blue);}
/* 标签 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 15px;border-radius:999px;background:#fff;border:1px solid var(--line);
  color:#33506A;font-size:13.5px;font-weight:500;
  transition:all .2s ease;
}
.tag:hover{background:var(--mist);border-color:#BFD5E7;color:var(--blue);transform:translateY(-2px);}
.tag:focus-visible{outline:2px solid var(--coral);outline-offset:2px;}
/* 安全提示 */
.safety-band{
  background:var(--mist);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px 36px;
}
.safety-band h2{font-size:clamp(1.3rem,2vw,1.6rem);font-weight:700;margin:0 0 10px;color:var(--ink);}
.safety-band > p{color:var(--muted);margin:0 0 22px;font-size:15px;}
.safety-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.safety-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:18px 18px;transition:transform .2s ease,box-shadow .2s ease;
}
.safety-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
.safety-item i{color:var(--safe);font-size:17px;margin-bottom:10px;display:block;}
.safety-item h4{font-size:14.5px;font-weight:600;margin:0 0 6px;color:var(--ink);}
.safety-item p{font-size:13px;color:var(--muted);margin:0;line-height:1.7;}
/* CTA */
.cta-card{
  background:linear-gradient(150deg,#1F5E8C 0%,#174A70 60%,#123A59 100%);
  border-radius:24px;padding:52px 48px;color:#fff;
  display:grid;grid-template-columns:1.3fr .7fr;gap:36px;align-items:center;
  box-shadow:0 24px 60px rgba(15,35,60,.18);
}
.cta-card h2{font-size:clamp(1.5rem,2.3vw,2rem);font-weight:700;margin:0 0 12px;line-height:1.4;color:#fff;}
.cta-card p{color:#C6DCEC;margin:0 0 24px;font-size:15.5px;line-height:1.8;max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-card .btn-ghost{color:#fff;border-color:rgba(255,255,255,.4);background:transparent;}
.cta-card .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.cta-visual{
  border-radius:18px;overflow:hidden;border:1px solid rgba(255,255,255,.16);
  aspect-ratio:4/3;background:rgba(255,255,255,.06);
}
.cta-visual img{width:100%;height:100%;object-fit:cover;}
/* 返回 */
.back-line{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;
  padding:26px 0 0;border-top:1px solid var(--line);margin-top:8px;
}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:var(--blue);font-weight:600;}
.back-link:hover{color:var(--blue-dark);}
.back-note{font-size:13px;color:var(--muted);}
/* 页脚 */
.site-footer{background:var(--footer);color:#C8D8E6;padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.site-footer .brand-name{color:#fff;font-size:16.5px;font-weight:700;}
.site-footer .brand-sub{color:#8FA9BC;font-size:11.5px;letter-spacing:.06em;}
.footer-desc{font-size:14px;line-height:1.8;color:#9FB5C7;max-width:330px;margin:0;}
.footer-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.footer-badges span{
  font-size:12px;padding:5px 11px;border-radius:999px;background:rgba(255,255,255,.08);
  color:#CBDDEB;border:1px solid rgba(255,255,255,.12);
}
.footer-col h4{font-size:15px;color:#fff;margin:0 0 16px;font-weight:600;}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px;}
.footer-col a{color:#9FB5C7;font-size:14px;transition:color .2s ease;}
.footer-col a:hover{color:var(--coral);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#8AA3B7;
}
/* 响应式 */
@media (max-width:1199.98px){
  .mega-panel{width:620px;}
}
@media (max-width:991.98px){
  .nav-links,.nav-mega{display:none;}
  .nav-toggler{display:inline-flex;}
  .mobile-drawer{display:block;}
  .section{padding:72px 0;}
  .article-hero{padding:28px 0 40px;}
  .article-layout{grid-template-columns:1fr;gap:28px;}
  .article-side{position:static;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .safety-grid{grid-template-columns:1fr 1fr;}
  .cta-card{grid-template-columns:1fr;padding:38px 30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .panel{padding:26px 24px;}
}
@media (min-width:992px){
  .mobile-drawer{display:none !important;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .container{padding-left:18px;padding-right:18px;}
  .nav-wrap{height:68px;}
  .brand-name{font-size:15px;}
  .brand-sub{font-size:10.5px;}
  .nav-cta{display:none;}
  .related-grid{grid-template-columns:1fr;}
  .safety-grid{grid-template-columns:1fr;}
  .article-body{font-size:16.5px;line-height:1.85;}
  .article-body h2{font-size:1.3rem;}
  .safety-band{padding:26px 22px;}
  .cta-card{padding:30px 22px;border-radius:20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;}
  .back-line{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  .article-hero h1{font-size:1.55rem;}
  .article-lead{font-size:15.5px;}
  .panel{padding:22px 18px;}
  .side-card{padding:20px 18px;}
  .btn-main,.btn-coral,.btn-ghost,.btn-soft{width:100%;}
  .back-link{font-size:14px;}
}

/* roulang page: category1 */
:root{
  --blue:#1F5E8C;
  --blue-dark:#174A70;
  --coral:#EF6A7A;
  --coral-soft:#FDE8EB;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --mist:#EEF4FA;
  --ink:#0F1F2E;
  --muted:#4B5B6B;
  --line:#E2EAF2;
  --safe:#2F8F6B;
  --safe-soft:#E7F4EE;
  --footer:#0E2233;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow:0 12px 32px rgba(15,35,60,.07);
  --shadow-hover:0 18px 44px rgba(15,35,60,.12);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--blue);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--blue-dark);text-decoration:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--coral);outline-offset:2px;}
.container{max-width:var(--container);width:100%;padding-left:24px;padding-right:24px;margin:0 auto;}
.section{padding:84px 0;}
.section-mist{background:var(--mist);}
.section-white{background:#fff;}
.text-muted-2{color:var(--muted);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{
  font-size:clamp(1.6rem,2.4vw,2.2rem);
  font-weight:700;line-height:1.36;letter-spacing:-.01em;margin:0 0 14px;
}
.section-head p{margin:0;color:var(--muted);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.04em;color:var(--blue);
  background:var(--mist);border:1px solid var(--line);
  padding:6px 14px;border-radius:999px;font-weight:600;margin-bottom:18px;
}
/* 按钮 */
.btn-main,.btn-coral,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:50px;padding:0 26px;border-radius:12px;font-size:15.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  line-height:1;
}
.btn-main{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(31,94,140,.20);}
.btn-main:hover{background:var(--blue-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(23,74,112,.26);}
.btn-coral{background:var(--coral);color:#fff;box-shadow:0 8px 20px rgba(239,106,122,.26);}
.btn-coral:hover{background:#e3566a;color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(227,86,106,.3);}
.btn-ghost{background:transparent;color:var(--blue);border-color:#C9DBEA;}
.btn-ghost:hover{background:var(--mist);color:var(--blue-dark);border-color:var(--blue);}
.btn-soft{background:#fff;color:var(--blue);border-color:var(--line);box-shadow:var(--shadow);}
.btn-soft:hover{background:var(--mist);color:var(--blue-dark);}
.btn-main:focus-visible,.btn-coral:focus-visible,.btn-ghost:focus-visible,.btn-soft:focus-visible{outline:2px solid var(--coral);outline-offset:2px;}
.btn-main:active,.btn-coral:active,.btn-ghost:active,.btn-soft:active{transform:translateY(1px);}
.btn-block{width:100%;}
/* 徽章 */
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:6px 12px;border-radius:999px;}
.chip-blue{background:var(--mist);color:var(--blue);}
.chip-coral{background:var(--coral-soft);color:#C84257;}
.chip-safe{background:var(--safe-soft);color:var(--safe);}
/* 导航 */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .24s ease;}
.site-header.scrolled{box-shadow:0 8px 26px rgba(15,35,60,.08);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;height:76px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);flex-shrink:0;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:40px;height:40px;border-radius:12px;background:linear-gradient(150deg,var(--blue),var(--blue-dark));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;
  box-shadow:0 6px 16px rgba(31,94,140,.28);flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:16.5px;font-weight:700;letter-spacing:-.01em;}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.06em;margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{padding:9px 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--ink);transition:background .18s ease,color .18s ease;white-space:nowrap;}
.nav-link:hover{background:var(--mist);color:var(--blue);}
.nav-link.active{color:var(--blue);background:var(--mist);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-mega{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:7px;height:42px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:10px;color:var(--ink);
  font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease;
}
.mega-toggle:hover{border-color:var(--blue);color:var(--blue);background:var(--mist);}
.mega-toggle:focus-visible{outline:2px solid var(--coral);outline-offset:2px;}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:720px;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:0 26px 60px rgba(15,35,60,.18);
  padding:26px;display:grid;grid-template-columns:1fr 1fr;gap:26px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
  z-index:1050;
}
.nav-mega:hover .mega-panel,.nav-mega:focus-within .mega-panel,.nav-mega.mega-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-title{font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.08em;margin-bottom:14px;}
.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.mega-card{display:block;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:#fff;transition:all .18s ease;}
.mega-card:hover{border-color:#BFD5E7;background:var(--mist);transform:translateY(-2px);}
.mega-card-name{display:block;font-size:14px;font-weight:600;color:var(--ink);}
.mega-card-desc{display:block;font-size:12.5px;color:var(--muted);margin-top:3px;line-height:1.5;}
.mega-news-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line);}
.mega-news-item:last-child{border-bottom:0;}
.mega-news-title{font-size:14px;color:var(--ink);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.mega-news-item:hover .mega-news-title{color:var(--blue);}
.mega-news-date{font-size:12px;color:var(--muted);flex-shrink:0;font-variant-numeric:tabular-nums;}
.nav-burger{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:17px;align-items:center;justify-content:center;
}
.nav-burger:hover{border-color:var(--blue);color:var(--blue);}
.nav-cta{height:44px;padding:0 20px;font-size:14.5px;}
/* 移动菜单 */
.offcanvas{max-width:320px;}
#mobileNav{--bs-offcanvas-width:320px;}
.offcanvas-header{border-bottom:1px solid var(--line);}
.offcanvas-title{font-size:16px;font-weight:700;color:var(--ink);}
.m-group-title{font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.08em;margin:18px 0 8px;}
.m-link{display:block;padding:12px 14px;border-radius:12px;font-size:15px;color:var(--ink);border:1px solid transparent;}
.m-link:hover{background:var(--mist);color:var(--blue);}
.m-link.active{background:var(--mist);color:var(--blue);font-weight:600;border-color:#CFE0EE;}
/* 分类页头 */
.cat-hero{position:relative;overflow:hidden;background:var(--mist);border-bottom:1px solid var(--line);padding:52px 0 46px;}
.cat-hero::before{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,94,140,.10),rgba(31,94,140,0) 68%);
}
.cat-hero::after{
  content:"";position:absolute;left:-80px;bottom:-140px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(239,106,122,.10),rgba(239,106,122,0) 70%);
}
.cat-hero .container{position:relative;z-index:1;}
.breadcrumb-line{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:16px;}
.breadcrumb-line a{color:var(--muted);}
.breadcrumb-line a:hover{color:var(--blue);}
.breadcrumb-line i{font-size:9px;opacity:.55;}
.cat-hero-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:44px;align-items:end;}
.cat-h1{font-size:clamp(1.95rem,3.4vw,2.85rem);font-weight:700;letter-spacing:-.02em;line-height:1.3;margin:0 0 16px;}
.cat-lead{margin:0;color:var(--muted);max-width:700px;font-size:16.5px;}
.cat-side{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px 24px;box-shadow:var(--shadow);}
.cat-side h2{font-size:14px;font-weight:700;color:var(--ink);margin:0 0 6px;}
.cat-side-item{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--muted);}
.cat-side-item:last-child{border-bottom:0;padding-bottom:0;}
.cat-side-item i{color:var(--blue);margin-top:4px;font-size:14px;}
.filter-form{
  margin-top:32px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:18px;box-shadow:var(--shadow);display:grid;grid-template-columns:repeat(3,1fr) auto;gap:14px;align-items:end;
}
.filter-field label{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin-bottom:6px;}
.filter-field select{
  width:100%;height:48px;border:1px solid var(--line);border-radius:12px;background:#fff;
  padding:0 14px;font-size:14.5px;color:var(--ink);appearance:none;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath fill='%234B5B6B' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;
}
.filter-field select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(31,94,140,.14);}
.filter-submit{height:48px;padding:0 24px;border-radius:12px;border:0;background:var(--blue);color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s ease;}
.filter-submit:hover{background:var(--blue-dark);transform:translateY(-1px);}
/* 列表布局 */
.cat-layout{display:grid;grid-template-columns:280px 1fr;gap:34px;align-items:start;}
.filter-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow);position:sticky;top:96px;}
.filter-group + .filter-group{margin-top:20px;padding-top:20px;border-top:1px solid var(--line);}
.filter-group h3{font-size:14px;font-weight:700;margin:0 0 10px;color:var(--ink);}
.filter-opt{display:flex;align-items:center;gap:9px;font-size:14.5px;color:var(--muted);padding:5px 0;cursor:pointer;}
.filter-opt input{width:16px;height:16px;accent-color:var(--blue);cursor:pointer;}
.filter-opt:hover{color:var(--blue);}
.filter-reset{margin-top:22px;width:100%;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--muted);font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease;}
.filter-reset:hover{border-color:var(--blue);color:var(--blue);background:var(--mist);}
.filter-toggle{width:100%;margin-bottom:22px;}
.list-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:26px;}
.list-head h2{font-size:clamp(1.4rem,2vw,1.75rem);font-weight:700;margin:0 0 8px;letter-spacing:-.01em;}
.list-head p{margin:0;color:var(--muted);font-size:15px;}
.list-count{font-size:13.5px;color:var(--muted);background:var(--mist);border:1px solid var(--line);border-radius:999px;padding:6px 14px;}
.list-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.content-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#CFE0EE;}
.content-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--mist);}
.content-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.content-card:hover .thumb img{transform:scale(1.03);}
.content-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;}
.content-card h3{font-size:17px;line-height:1.55;font-weight:600;margin:0;color:var(--ink);}
.content-card:hover h3{color:var(--blue);}
.content-card p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.75;}
.meta-row{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--muted);margin-top:auto;padding-top:12px;border-top:1px dashed var(--line);}
.card-more{font-size:13.5px;font-weight:600;color:var(--blue);display:inline-flex;align-items:center;gap:6px;}
.card-more:hover{color:var(--blue-dark);}
.card-more i{font-size:11px;transition:transform .2s ease;}
.card-more:hover i{transform:translateX(3px);}
.more-wrap{display:flex;justify-content:center;margin-top:34px;}
/* 精选专题 */
.feature-layout{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:stretch;}
.feature-main{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .22s ease,box-shadow .22s ease;
}
.feature-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.feature-main .thumb{aspect-ratio:16/9;overflow:hidden;}
.feature-main .thumb img{width:100%;height:100%;object-fit:cover;}
.feature-main .body{padding:24px 26px 26px;}
.feature-main h3{font-size:20px;line-height:1.5;font-weight:600;margin:12px 0 10px;}
.feature-main p{margin:0 0 14px;color:var(--muted);font-size:14.5px;}
.feature-side{display:grid;gap:18px;}
.feature-mini{
  display:grid;grid-template-columns:112px 1fr;gap:16px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:16px;
  box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;
}
.feature-mini:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.feature-mini .thumb{aspect-ratio:1/1;border-radius:12px;overflow:hidden;}
.feature-mini .thumb img{width:100%;height:100%;object-fit:cover;}
.feature-mini h4{font-size:15.5px;line-height:1.55;font-weight:600;margin:8px 0 6px;}
.feature-mini span.date{font-size:12.5px;color:var(--muted);}
/* 使用指南 */
.guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.guide-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px 24px;
  box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;
}
.guide-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.guide-num{
  width:40px;height:40px;border-radius:12px;background:var(--mist);color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;margin-bottom:16px;
}
.guide-card h3{font-size:16px;font-weight:600;margin:0 0 8px;}
.guide-card p{margin:0;font-size:14px;color:var(--muted);line-height:1.75;}
/* 安全提示 */
.safe-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.safe-card{
  display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow);
}
.safe-icon{
  width:44px;height:44px;flex-shrink:0;border-radius:12px;background:var(--safe-soft);color:var(--safe);
  display:flex;align-items:center;justify-content:center;font-size:17px;
}
.safe-card h3{font-size:16px;font-weight:600;margin:0 0 6px;}
.safe-card p{margin:0;font-size:14px;color:var(--muted);line-height:1.75;}
/* 标签云 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:14px;color:var(--ink);
  box-shadow:0 4px 12px rgba(15,35,60,.04);transition:all .2s ease;
}
.tag-pill:hover{border-color:#BFD5E7;background:var(--mist);color:var(--blue);transform:translateY(-2px);}
.tag-pill i{font-size:11px;color:var(--blue);opacity:.7;}
/* FAQ */
.faq-accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-md)!important;margin-bottom:14px;
  overflow:hidden;background:#fff;box-shadow:var(--shadow);
}
.faq-accordion .accordion-button{
  font-size:16px;font-weight:600;color:var(--ink);background:#fff;padding:20px 22px;
  box-shadow:none!important;line-height:1.6;
}
.faq-accordion .accordion-button:not(.collapsed){background:var(--mist);color:var(--blue);}
.faq-accordion .accordion-button:focus{outline:2px solid var(--coral);outline-offset:-2px;box-shadow:none;}
.faq-accordion .accordion-button::after{
  content:"+";background-image:none;width:auto;height:auto;font-size:20px;font-weight:600;
  color:var(--blue);transform:none;display:flex;align-items:center;justify-content:center;line-height:1;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"−";}
.faq-accordion .accordion-body{padding:0 22px 22px;color:var(--muted);font-size:15px;line-height:1.85;background:#fff;}
/* 分类入口 */
.cat-entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.cat-entry{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.cat-entry:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#BFD5E7;}
.cat-entry .entry-icon{
  width:40px;height:40px;border-radius:12px;background:var(--mist);color:var(--blue);
  display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:16px;
}
.cat-entry h3{font-size:16px;font-weight:600;margin:0 0 8px;color:var(--ink);}
.cat-entry p{margin:0 0 14px;font-size:13.5px;color:var(--muted);line-height:1.7;}
.cat-entry .entry-arrow{font-size:13px;font-weight:600;color:var(--blue);display:inline-flex;align-items:center;gap:6px;}
/* CTA */
.cta-card{
  position:relative;overflow:hidden;background:#163E5E;color:#fff;border-radius:26px;
  padding:56px;display:grid;grid-template-columns:1.5fr auto;gap:40px;align-items:center;
}
.cta-card::before{
  content:"";position:absolute;right:-100px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(239,106,122,.22),rgba(239,106,122,0) 70%);
}
.cta-card::after{
  content:"";position:absolute;left:-60px;bottom:-140px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.10),rgba(255,255,255,0) 70%);
}
.cta-card > *{position:relative;z-index:1;}
.cta-card h2{font-size:clamp(1.6rem,2.4vw,2.15rem);font-weight:700;margin:0 0 14px;color:#fff;line-height:1.35;}
.cta-card p{margin:0;color:#C6D9E8;font-size:15.5px;max-width:640px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;min-width:210px;}
.cta-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.45);}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
/* 页脚 */
.site-footer{background:var(--footer);color:#C8D7E4;padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(150deg,#2B6E9E,#1B4B70);box-shadow:none;}
.footer-brand .brand-name{color:#fff;font-size:16.5px;font-weight:700;display:block;}
.footer-brand .brand-sub{color:#8FA9BF;font-size:11.5px;display:block;margin-top:3px;letter-spacing:.05em;}
.footer-desc{color:#9FB6CB;font-size:14.5px;max-width:350px;margin:0;}
.footer-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.footer-badges span{
  font-size:12.5px;padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.07);
  color:#CFE0EE;border:1px solid rgba(255,255,255,.12);
}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin:0 0 16px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:#9FB6CB;font-size:14.5px;}
.footer-col a:hover{color:var(--coral);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);margin-top:52px;padding:22px 0;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:#8098AD;
}
.anchor-offset{display:block;position:relative;top:-96px;visibility:hidden;}
/* 响应式 */
@media (max-width:1199.98px){
  .container{padding-left:20px;padding-right:20px;}
  .nav-link{padding:9px 10px;font-size:14.5px;}
  .mega-panel{width:640px;}
  .cta-card{padding:44px;}
  .guide-grid{grid-template-columns:repeat(2,1fr);}
  .cat-entry-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991.98px){
  .nav-links,.nav-mega,.nav-cta{display:none;}
  .nav-burger{display:inline-flex;}
  .nav-wrap{height:68px;}
  .section{padding:64px 0;}
  .cat-hero{padding:40px 0 38px;}
  .cat-hero-grid{grid-template-columns:1fr;gap:28px;align-items:start;}
  .cat-side{max-width:520px;}
  .filter-form{grid-template-columns:1fr 1fr;}
  .filter-submit{grid-column:span 2;}
  .cat-layout{grid-template-columns:1fr;gap:24px;}
  .filter-panel{position:static;}
  .list-grid{grid-template-columns:1fr 1fr;}
  .feature-layout{grid-template-columns:1fr;}
  .safe-grid{grid-template-columns:1fr;}
  .cta-card{grid-template-columns:1fr;gap:26px;padding:38px;}
  .cta-actions{flex-direction:row;flex-wrap:wrap;min-width:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .brand-name{font-size:15px;}
  .brand-sub{font-size:11px;}
  .cat-h1{font-size:1.85rem;}
  .filter-form{grid-template-columns:1fr;}
  .filter-submit{grid-column:auto;}
  .list-grid{grid-template-columns:1fr;}
  .guide-grid{grid-template-columns:1fr;}
  .cat-entry-grid{grid-template-columns:1fr;}
  .feature-mini{grid-template-columns:96px 1fr;}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .list-head{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
  .cat-h1{font-size:1.65rem;}
  .btn-main,.btn-coral,.btn-ghost,.btn-soft{width:100%;}
  .nav-burger{width:42px;height:42px;}
  .content-card .body{padding:18px 18px 20px;}
  .cta-card{padding:30px 22px;border-radius:20px;}
  .feature-mini{grid-template-columns:1fr;}
  .feature-mini .thumb{aspect-ratio:16/9;border-radius:12px;}
}