/* roulang page: index */
*{box-sizing:border-box}
:root{
  --mo:#1d4ed8;
  --fu:#f97316;
  --di:#f5f8fd;
  --zhi:#0f1c33;
  --ruan:#57657d;
  --bian:#e3e9f4;
  --yuan:16px;
  --ying:0 10px 28px rgba(23,41,77,.08);
  --ju:clamp(38px,5vw,68px);
}
html{scroll-behavior:smooth}
body{margin:0;background:var(--di);color:var(--zhi);font:15px/1.75 "PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
:focus-visible{outline:2px solid var(--mo);outline-offset:3px}
.thhf-wrap{width:min(1180px,92vw);margin:0 auto}

/* 顶栏 */
.thhf-top{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);border-bottom:1px solid var(--bian);backdrop-filter:blur(10px)}
.thhf-top .thhf-wrap{display:flex;align-items:center;gap:18px;min-height:68px}
.thhf-logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:16px;letter-spacing:.4px}
.thhf-mark{width:40px;height:40px;border-radius:13px;background:linear-gradient(135deg,#1d4ed8,#3b82f6 60%,#f97316);color:#fff;display:grid;place-items:center;font-size:18px;font-weight:700;box-shadow:0 8px 18px rgba(29,78,216,.28)}
.thhf-nav{margin-left:auto;display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.thhf-nav::-webkit-scrollbar{display:none}
.thhf-nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:11px;color:var(--ruan);font-size:15px;white-space:nowrap;transition:background .2s,color .2s}
.thhf-nav a:hover{background:#eef3ff;color:var(--mo)}
.thhf-nav a.is-on{background:#e7eeff;color:var(--mo);font-weight:700}

/* 首屏 */
.thhf-hero{position:relative;isolation:isolate;overflow:hidden;padding:clamp(46px,7vw,88px) 0 clamp(58px,8vw,96px);color:#fff;background:var(--di)}
.thhf-hero::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(152deg,rgba(9,25,60,.95),rgba(29,78,216,.78)),url("/assets/images/backpic/back-1.webp") center/cover no-repeat;clip-path:polygon(0 0,100% 0,100% 100%,0 88%)}
.thhf-hero-in{max-width:860px;text-align:center}
.thhf-kicker{display:inline-block;font-size:13px;letter-spacing:2px;color:#c9daff;border:1px solid rgba(201,218,255,.4);border-radius:999px;padding:6px 16px;margin-bottom:20px}
.thhf-hero h1{font-size:clamp(28px,5vw,48px);line-height:1.25;font-weight:900;letter-spacing:1px}
.thhf-hero h1 span{color:#ffd08a}
.thhf-sub{margin-top:14px;font-size:clamp(15px,2vw,18px);color:#dbe6ff}
.thhf-hero-txt{margin:16px auto 0;max-width:780px;font-size:15px;line-height:1.9;color:rgba(235,242,255,.86);text-align:left}
.thhf-search{display:flex;gap:10px;max-width:620px;margin:26px auto 0;padding:8px;background:rgba(255,255,255,.97);border-radius:16px;box-shadow:0 18px 40px rgba(6,20,50,.28)}
.thhf-search input{flex:1;min-height:46px;padding:0 16px;border:0;border-radius:11px;background:#f1f5fd;color:var(--zhi);font-size:15px;outline:none}
.thhf-search input::placeholder{color:#8494ad}
.thhf-search input:focus{box-shadow:inset 0 0 0 2px #b9cdf7}
.thhf-search button{min-height:46px;padding:0 28px;border:0;border-radius:11px;background:var(--mo);color:#fff;font-weight:700;cursor:pointer;transition:background .2s,transform .2s}
.thhf-search button:hover{background:#1740b8;transform:translateY(-1px)}
.thhf-chips{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:20px}
.thhf-chips a{display:inline-flex;align-items:center;min-height:44px;padding:0 18px;border:1px solid rgba(255,255,255,.42);border-radius:999px;font-size:14px;color:#eaf1ff;transition:background .2s,border-color .2s}
.thhf-chips a:hover{background:rgba(255,255,255,.16);border-color:#fff}

/* 板块通用 */
.thhf-sec{padding:var(--ju) 0}
.thhf-sec--white{background:#fff}
.thhf-sec--soft{background:linear-gradient(180deg,#eef4fd,#f8fbff)}
.thhf-sec--photo{background:linear-gradient(180deg,rgba(245,248,253,.95),rgba(245,248,253,.98)),url("/assets/images/backpic/back-2.webp") center/cover no-repeat}
.thhf-head{max-width:840px;margin-bottom:clamp(20px,3vw,34px)}
.thhf-head h2{font-size:clamp(21px,2.6vw,29px);font-weight:800;line-height:1.4;letter-spacing:.3px}
.thhf-head h2::before{content:"";display:inline-block;width:8px;height:22px;border-radius:4px;background:linear-gradient(180deg,var(--mo),var(--fu));margin-right:10px;vertical-align:-3px}
.thhf-head p{margin-top:12px;color:var(--ruan);font-size:15px}

/* 卡片墙 */
.thhf-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));gap:20px}
.thhf-card{background:#fff;border:1px solid var(--bian);border-radius:var(--yuan);overflow:hidden;box-shadow:var(--ying);transition:transform .25s,box-shadow .25s}
.thhf-card:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(23,41,77,.15)}
.thhf-thumb{position:relative;aspect-ratio:3/4;overflow:hidden;background:#dbe4f6}
.thhf-thumb img{width:100%;height:100%;object-fit:cover}
.thhf-badge{position:absolute;left:10px;top:10px;padding:4px 11px;border-radius:999px;background:rgba(13,27,51,.8);color:#fff;font-size:13px;line-height:1.5;backdrop-filter:blur(4px)}
.thhf-badge--hot{background:rgba(249,115,22,.92)}
.thhf-card-b{padding:14px 16px 18px}
.thhf-card-b h3{font-size:16px;font-weight:700;line-height:1.45;margin-bottom:6px}
.thhf-card-b p{font-size:14px;color:var(--ruan)}

/* 题材频道 */
.thhf-cats{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}
.thhf-cats li{background:#fff;border:1px solid var(--bian);border-radius:14px;padding:20px;box-shadow:var(--ying)}
.thhf-cats b{display:inline-block;padding:4px 13px;border-radius:9px;background:#eaf0ff;color:var(--mo);font-size:14px;margin-bottom:10px}
.thhf-cats p{font-size:14px;color:var(--ruan)}

/* 榜单 */
.thhf-rank{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:12px}
.thhf-rank li{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 16px;background:#fff;border:1px solid var(--bian);border-radius:13px;box-shadow:var(--ying);transition:transform .2s}
.thhf-rank li:hover{transform:translateX(4px)}
.thhf-num{display:grid;place-items:center;width:32px;height:32px;border-radius:10px;background:#eef3ff;color:var(--mo);font-weight:800;font-size:14px;flex:0 0 auto}
.thhf-num--top{background:linear-gradient(135deg,#f97316,#fb923c);color:#fff}
.thhf-rank strong{font-size:15px;font-weight:700}
.thhf-pill{padding:2px 11px;border-radius:999px;border:1px solid var(--bian);color:var(--ruan);font-size:13px}
.thhf-rank small{margin-left:auto;color:var(--ruan);font-size:14px}

/* 保障与流程 */
.thhf-trust,.thhf-flow{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.thhf-trust li,.thhf-flow li{background:#fff;border:1px solid var(--bian);border-radius:15px;padding:20px;box-shadow:var(--ying)}
.thhf-dot{display:grid;place-items:center;width:36px;height:36px;border-radius:12px;background:#eaf0ff;color:var(--mo);font-weight:800;font-size:14px;margin-bottom:12px}
.thhf-trust b,.thhf-flow b{display:block;font-size:16px;margin-bottom:8px}
.thhf-trust p,.thhf-flow p{font-size:14px;color:var(--ruan)}

/* 专题片单 */
.thhf-feat{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.thhf-feat article{background:#fff;border:1px solid var(--bian);border-radius:var(--yuan);overflow:hidden;box-shadow:var(--ying);transition:transform .25s,box-shadow .25s}
.thhf-feat article:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(23,41,77,.15)}
.thhf-feat .thhf-thumb{aspect-ratio:16/9}
.thhf-feat .thhf-card-b h3{font-size:18px}
.thhf-feat .thhf-card-b p{font-size:14px;line-height:1.8}

/* 资讯 */
.thhf-news{display:grid;grid-template-columns:repeat(auto-fit,minmax(330px,1fr));gap:18px}
.thhf-news li{display:flex;gap:14px;padding:12px;background:#fff;border:1px solid var(--bian);border-radius:14px;box-shadow:var(--ying)}
.thhf-news .thhf-thumb{width:108px;flex:0 0 108px;aspect-ratio:4/3;border-radius:10px}
.thhf-news h3{font-size:15px;font-weight:700;line-height:1.5;margin-bottom:6px}
.thhf-news p{font-size:14px;color:var(--ruan)}
.thhf-when{display:inline-block;margin-top:8px;font-size:13px;color:var(--mo);background:#eef3ff;border-radius:999px;padding:2px 10px}

/* 入口按钮 */
.thhf-entries{display:flex;flex-wrap:wrap;gap:14px;margin-top:6px}
.thhf-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 26px;border-radius:13px;background:var(--mo);color:#fff;font-weight:700;font-size:15px;box-shadow:0 10px 24px rgba(29,78,216,.26);transition:background .2s,transform .2s}
.thhf-btn:hover{background:#1740b8;transform:translateY(-2px)}
.thhf-btn--ghost{background:#fff;color:var(--mo);border:1px solid #c6d7f8;box-shadow:none}
.thhf-btn--ghost:hover{background:#eef3ff;color:#1740b8}

/* 场景与状态 */
.thhf-scene{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.thhf-scene li{padding:20px;border-radius:14px;background:#fff;border:1px solid var(--bian);box-shadow:var(--ying);border-left:4px solid var(--mo)}
.thhf-scene b{display:block;font-size:16px;margin-bottom:6px}
.thhf-scene p{font-size:14px;color:var(--ruan)}
.thhf-split{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.thhf-split article{background:#fff;border:1px solid var(--bian);border-radius:15px;padding:22px;box-shadow:var(--ying)}
.thhf-split h3{font-size:17px;margin-bottom:14px}
.thhf-tags{display:flex;flex-wrap:wrap;gap:10px}
.thhf-tags span{display:inline-flex;align-items:center;min-height:38px;padding:0 15px;border-radius:10px;background:#f2f6fd;border:1px solid var(--bian);font-size:14px;color:#33455f}

/* 问答 */
.thhf-faq{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:18px}
.thhf-faq li{background:#fff;border:1px solid var(--bian);border-radius:14px;padding:20px;box-shadow:var(--ying)}
.thhf-faq h3{font-size:16px;margin-bottom:8px}
.thhf-faq p{font-size:14px;color:var(--ruan)}

/* 收口 */
.thhf-join{background:linear-gradient(140deg,#12306f,#1d4ed8 62%,#2563eb);color:#fff;border-radius:24px;padding:clamp(28px,5vw,56px);text-align:center;box-shadow:0 24px 50px rgba(18,48,111,.28)}
.thhf-join h2{font-size:clamp(21px,2.8vw,30px);font-weight:800;line-height:1.4}
.thhf-join p{margin:14px auto 24px;max-width:680px;color:#d8e4ff;font-size:15px;line-height:1.9}
.thhf-join .thhf-entries{justify-content:center}
.thhf-join .thhf-btn{background:#fff;color:#12306f;box-shadow:0 12px 26px rgba(4,16,44,.28)}
.thhf-join .thhf-btn:hover{background:#eaf1ff}
.thhf-join .thhf-btn--ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6);box-shadow:none}
.thhf-join .thhf-btn--ghost:hover{background:rgba(255,255,255,.14)}

/* 页脚 */
.thhf-foot{background:#0d1b33;color:#c3d0e5;padding:clamp(40px,5vw,60px) 0 0;margin-top:clamp(30px,4vw,56px)}
.thhf-foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(185px,1fr));gap:28px;padding-bottom:34px}
.thhf-foot h4{color:#fff;font-size:15px;margin-bottom:14px}
.thhf-foot p{font-size:14px;line-height:1.85;color:#a9b8d1}
.thhf-foot ul{display:grid;gap:10px;font-size:14px}
.thhf-foot ul a:hover{color:#fff}
.thhf-foot ul li{color:#a9b8d1}
.thhf-copy{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#8ea3c2}

/* 断点 */
@media (max-width:1024px){
  .thhf-hero-txt{max-width:100%}
  .thhf-grid{grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:16px}
  .thhf-rank small{margin-left:0;flex-basis:100%}
}
@media (max-width:768px){
  .thhf-top .thhf-wrap{flex-direction:column;align-items:flex-start;gap:6px;padding:10px 0 8px;min-height:0}
  .thhf-nav{margin-left:0;width:100%;padding-bottom:4px}
  .thhf-nav a{padding:0 12px;font-size:14px}
  .thhf-hero{padding-top:38px}
  .thhf-hero-txt{text-align:left;font-size:14px}
  .thhf-search{flex-direction:column;padding:10px}
  .thhf-search button{width:100%}
  .thhf-news li{flex-direction:column}
  .thhf-news .thhf-thumb{width:100%;flex:0 0 auto;aspect-ratio:16/9}
}
@media (max-width:520px){
  .thhf-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .thhf-card-b{padding:10px 12px 14px}
  .thhf-card-b h3{font-size:14px}
  .thhf-card-b p{font-size:14px}
  .thhf-rank li{padding:10px 12px}
  .thhf-trust li,.thhf-flow li,.thhf-faq li,.thhf-split article{padding:16px}
  .thhf-btn{width:100%}
  .thhf-chips a{padding:0 14px;font-size:14px}
}