/* roulang page: index */
:root{
  --ink:#17161A;
  --ink-2:#4A464E;
  --line:#E8E2DA;
  --bg:#FBF8F4;
  --surface:#FFFFFF;
  --ink-block:#1E1B20;
  --primary:#E2554A;
  --primary-deep:#B93A31;
  --primary-soft:#FBE7E3;
  --accent:#4C6B5A;
  --highlight:#F6E3D2;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,22,26,.06);
  --sh-2:0 24px 48px -32px rgba(23,22,26,.35);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--surface);
  color:var(--ink);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary)}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.2}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
input,select,textarea,button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.num{font-family:"Manrope","Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.16em;color:var(--ink-2);
  text-transform:uppercase;font-weight:600;margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--primary);display:inline-block}
.sec{padding:96px 0;border-top:1px solid var(--line)}
.sec.alt{background:var(--bg)}
.sec-first{border-top:0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(1.6rem,3vw,2.4rem);max-width:760px}
.sec-lead{color:var(--ink-2);font-size:16px;max-width:760px;margin-top:16px}
.sec-head .btn-text{white-space:nowrap}
/* 按钮 */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;background:transparent;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-c:active{transform:translateY(1px)}
.btn-c .arw{transition:transform .18s ease}
.btn-c:hover .arw{transform:translateX(4px)}
.btn-c.primary{background:var(--primary);color:#fff}
.btn-c.primary:hover{background:var(--primary-deep);color:#fff;transform:translateY(-1px)}
.btn-c.ghost{border-color:var(--ink);color:var(--ink)}
.btn-c.ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-c.sm{padding:10px 20px;font-size:14px}
.btn-c.block{width:100%}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink)}
.btn-text .arw{transition:transform .18s ease}
.btn-text:hover{color:var(--primary)}
.btn-text:hover .arw{transform:translateX(4px)}
/* 徽章与标签 */
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);border:1px solid var(--line);
  font-size:13px;letter-spacing:.04em;color:var(--ink-2);background:#fff;
}
.pill.fill{background:var(--primary-soft);border-color:transparent;color:var(--primary-deep);font-weight:600}
.pill.accent{background:#EDF2EE;border-color:transparent;color:var(--accent);font-weight:600}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);font-size:13px;color:var(--ink-2);background:#fff;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.tag:hover{background:var(--primary-soft);border-color:var(--primary-soft);color:var(--primary-deep)}
/* 导航 */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease,background .22s ease;
}
.brand-row{height:68px;display:flex;align-items:center;transition:height .22s ease}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{width:38px;height:38px;flex:0 0 38px;color:var(--primary);transition:width .22s ease,height .22s ease}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:15px;font-weight:700;letter-spacing:.01em;color:var(--ink)}
.brand-sub{font-size:11px;letter-spacing:.14em;color:var(--ink-2)}
.brand-tools{display:flex;align-items:center;gap:16px}
.nav-search{
  display:flex;align-items:center;gap:8px;padding:7px 16px;min-width:220px;
  border:1px solid var(--line);border-radius:var(--r-pill);background:var(--bg);
  transition:border-color .18s ease,background .18s ease;
}
.nav-search:focus-within{border-color:var(--primary);background:#fff}
.nav-search svg{color:var(--ink-2);flex:0 0 16px}
.nav-search input{border:0;background:transparent;outline:none;font-size:13px;width:100%}
.nav-toggle{
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.channel-row{
  border-top:1px solid var(--line);height:44px;overflow:hidden;
  transition:height .22s ease,opacity .22s ease,border-color .22s ease;
}
.channel-nav{display:flex;align-items:center;gap:30px;height:44px;font-size:14px}
.channel-nav a{
  position:relative;display:inline-flex;align-items:center;height:44px;color:var(--ink-2);
  transition:color .18s ease;white-space:nowrap;
}
.channel-nav a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--primary);
  transition:right .24s ease;
}
.channel-nav a:hover{color:var(--primary)}
.channel-nav a:hover::after{right:0}
.channel-nav a.active{color:var(--ink);font-weight:600}
.channel-nav a.active::after{right:0}
.site-header.is-stuck{background:rgba(255,255,255,.92);backdrop-filter:blur(8px);box-shadow:var(--sh-1)}
.site-header.is-stuck .brand-row{height:64px}
.site-header.is-stuck .channel-row{height:0;opacity:0;border-top-color:transparent}
.site-header.is-stuck .brand-mark{width:32px;height:32px;flex:0 0 32px}
@media(max-width:1199px){.nav-search{min-width:180px}}
@media(max-width:991px){
  .channel-row{display:none}
  .nav-search{display:none}
  .brand-row{height:62px}
  .site-header.is-stuck .brand-row{height:58px}
}
/* offcanvas */
.offcanvas{background:#fff;max-width:340px}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 22px}
.offcanvas-body{padding:18px 22px}
.off-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink);
}
.off-nav a:hover{color:var(--primary)}
.off-foot{margin-top:24px;font-size:13px;color:var(--ink-2);line-height:1.8}
/* Hero */
.hero{background:var(--bg);padding:76px 0 0;border-top:0}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(2.2rem,5vw,3.6rem);letter-spacing:-.02em;line-height:1.1}
.hero-lead{margin-top:22px;color:var(--ink-2);font-size:16.5px;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-visual{position:relative}
.hero-photo{
  aspect-ratio:4/5;border-radius:var(--r-lg);overflow:hidden;background:var(--highlight);
  box-shadow:var(--sh-2);border:1px solid var(--line);
}
.hero-photo img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.hero-photo:hover img{transform:scale(1.03)}
.mini-card{
  position:absolute;width:214px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:14px 16px;box-shadow:var(--sh-1);
}
.mini-card h4{font-size:14px;margin-bottom:6px}
.mini-card p{font-size:12.5px;color:var(--ink-2);line-height:1.7;margin:0}
.mini-1{left:-20px;bottom:60px}
.mini-2{right:-16px;top:40px}
.slot-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.slot{
  border:1px solid var(--line);border-radius:var(--r-pill);padding:5px 12px;
  font-size:12px;background:#fff;color:var(--ink-2);cursor:pointer;
  transition:all .18s ease;
}
.slot:hover{border-color:var(--primary);color:var(--primary)}
.slot.is-on{background:var(--primary-soft);border-color:var(--primary-soft);color:var(--primary-deep);font-weight:600}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  border-top:1px solid var(--line);margin-top:64px;padding:28px 0 34px;
}
.hero-stat .k{font-size:24px;font-weight:800;letter-spacing:-.01em}
.hero-stat .v{font-size:13px;color:var(--ink-2);margin-top:2px}
@media(max-width:991px){
  .hero{padding-top:48px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:460px}
  .hero-stats{margin-top:44px;grid-template-columns:repeat(2,1fr);gap:20px}
}
@media(max-width:575px){
  .mini-card{position:static;width:auto;margin-top:12px}
  .mini-1,.mini-2{left:auto;right:auto;bottom:auto;top:auto}
  .hero-visual{display:flex;flex-direction:column}
}
/* 内容日历 */
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:14px}
.cal-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 16px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;gap:8px;height:100%;
}
.cal-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(226,85,74,.28)}
.cal-day{font-size:12px;letter-spacing:.14em;color:var(--accent);font-weight:700}
.cal-title{font-size:14.5px;font-weight:600;line-height:1.5}
.cal-note{font-size:12.5px;color:var(--ink-2);line-height:1.7}
@media(max-width:991px){.cal-grid{grid-template-columns:repeat(4,1fr)}}
@media(max-width:767px){.cal-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:420px){.cal-grid{grid-template-columns:1fr}}
/* Bento */
.bento{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.bento-left{display:grid;gap:20px}
.bento-right{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.bcard{
  border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;
  background:#fff;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;gap:12px;position:relative;overflow:hidden;
}
.bcard:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(226,85,74,.28)}
.bcard h3{font-size:1.25rem}
.bcard p{font-size:14px;color:var(--ink-2);line-height:1.8;margin:0}
.bcard .btn-text{margin-top:auto}
.bcard.warm{background:var(--highlight);border-color:#EDD6C0}
.bcard.dark{background:var(--ink-block);border-color:var(--ink-block);color:#fff}
.bcard.dark p{color:#C6C1BA}
.bcard.dark .btn-text{color:#fff}
.bcard.dark .btn-text:hover{color:var(--primary)}
.bcard .bimg{aspect-ratio:16/9;border-radius:var(--r-md);overflow:hidden;background:var(--highlight);margin-bottom:6px}
.bcard .bimg img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.bcard:hover .bimg img{transform:scale(1.03)}
.ico{width:24px;height:24px;color:var(--primary)}
.bcard.dark .ico{color:#F2B7B0}
@media(max-width:991px){
  .bento{grid-template-columns:1fr}
  .bento-right{grid-template-columns:1fr 1fr}
}
@media(max-width:575px){.bento-right{grid-template-columns:1fr}}
/* 标签云 */
.topic-split{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px}
.tag-cloud .tag{font-size:14px;padding:9px 18px}
@media(max-width:991px){.topic-split{grid-template-columns:1fr;gap:28px}}
/* 场景卡 */
.scene-track{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 24px 26px;position:relative;overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(226,85,74,.2)}
.scene-no{
  font-family:"Manrope",sans-serif;font-size:52px;font-weight:800;line-height:1;
  color:var(--highlight);display:block;margin-bottom:14px;transition:color .2s ease;
}
.scene-card:hover .scene-no{color:var(--primary)}
.scene-card h3{font-size:1.15rem;margin-bottom:10px}
.scene-card p{font-size:14px;color:var(--ink-2);line-height:1.8;margin:0}
@media(max-width:991px){
  .scene-track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;padding-bottom:10px}
  .scene-card{min-width:76%;scroll-snap-align:start}
  .scene-track::-webkit-scrollbar{height:4px}
  .scene-track::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
}
/* 流程 */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.flow-step{position:relative;padding-top:34px}
.flow-step::before{
  content:"";position:absolute;top:6px;left:0;width:11px;height:11px;border-radius:50%;
  background:#fff;border:2px solid var(--primary);transition:background .2s ease;
}
.flow-step::after{content:"";position:absolute;top:11px;left:11px;right:-24px;height:1px;background:var(--line)}
.flow-step:last-child::after{display:none}
.flow-step:hover::before{background:var(--primary)}
.flow-k{font-size:12px;letter-spacing:.14em;color:var(--accent);font-weight:700;display:block;margin-bottom:8px}
.flow-step h3{font-size:1.1rem;margin-bottom:8px}
.flow-step p{font-size:14px;color:var(--ink-2);margin:0}
@media(max-width:767px){
  .flow{grid-template-columns:1fr;gap:0}
  .flow-step{padding:0 0 26px 32px}
  .flow-step::before{top:6px;left:0}
  .flow-step::after{top:20px;left:5px;right:auto;bottom:-4px;width:1px;height:auto}
}
/* 城市 */
.city-split{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.map-ph{
  aspect-ratio:4/3;border-radius:var(--r-lg);overflow:hidden;position:relative;
  background:
    linear-gradient(0deg,rgba(30,27,32,.06) 1px,transparent 1px) 0 0/100% 44px,
    linear-gradient(90deg,rgba(30,27,32,.06) 1px,transparent 1px) 0 0/44px 100%,
    var(--highlight);
  border:1px solid var(--line);
}
.map-ph img{width:100%;height:100%;object-fit:cover;opacity:.9}
.city-pills{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 20px}
@media(max-width:991px){.city-split{grid-template-columns:1fr;gap:28px}}
/* 观点卡 */
.opinion-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.opinion{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;border-left:3px solid var(--primary-soft);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.opinion:hover{border-left-color:var(--primary);box-shadow:var(--sh-2);transform:translateY(-4px)}
.opinion h3{font-size:1.1rem;margin-bottom:10px}
.opinion p{font-size:14px;color:var(--ink-2);margin:0}
.opinion .who{font-size:12.5px;letter-spacing:.06em;color:var(--accent);margin-top:16px;display:block}
@media(max-width:991px){.opinion-grid{grid-template-columns:1fr}}
/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:1.15fr .85fr .85fr;gap:24px}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(226,85,74,.3)}
.news-thumb{aspect-ratio:16/10;background:var(--highlight);overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--ink-2)}
.news-meta .cat{color:var(--primary-deep);background:var(--primary-soft);padding:3px 10px;border-radius:var(--r-pill);font-weight:600}
.news-card h3{font-size:1.05rem;line-height:1.5}
.news-card h3 a{color:var(--ink)}
.news-card h3 a:hover{color:var(--primary)}
.news-exc{font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .btn-text{margin-top:auto;font-size:13.5px}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;background:var(--bg);border:1px dashed var(--line);border-radius:var(--r-lg);
  text-align:center;padding:32px;
}
.empty-state svg{color:var(--ink-2)}
.empty-state .t{font-size:15px;color:var(--ink)}
.empty-state .s{font-size:13px;color:var(--ink-2)}
@media(max-width:991px){.news-grid{grid-template-columns:1fr 1fr}}
@media(max-width:767px){.news-grid{grid-template-columns:1fr}}
/* 用户故事墙 */
.wall{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start}
.story{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:24px;
  box-shadow:var(--sh-1);transition:box-shadow .2s ease,transform .2s ease;
}
.story:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.story:nth-child(2){margin-top:34px}
.story:nth-child(5){margin-top:34px}
.story:nth-child(3){margin-top:16px}
.story:nth-child(6){margin-top:16px}
.story-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:44px;height:44px;border-radius:50%;overflow:hidden;background:var(--highlight);flex:0 0 44px;
  transition:transform .2s ease;
}
.story:hover .avatar{transform:scale(1.03)}
.avatar img{width:100%;height:100%;object-fit:cover}
.story-name{font-size:14.5px;font-weight:600}
.story-city{font-size:12px;color:var(--ink-2)}
.story q{display:block;font-size:14px;color:var(--ink-2);line-height:1.85;quotes:none}
.story .time{display:block;margin-top:14px;font-size:12px;color:var(--ink-2);letter-spacing:.04em}
@media(max-width:991px){
  .wall{grid-template-columns:1fr 1fr}
  .story:nth-child(n){margin-top:0}
  .story:nth-child(even){margin-top:26px}
}
@media(max-width:575px){
  .wall{grid-template-columns:1fr}
  .story:nth-child(even){margin-top:0}
}
/* 数据 */
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.data-item{border-top:1px solid var(--line);padding-top:22px}
.data-item .big{font-size:clamp(2rem,4vw,2.9rem);font-weight:800;color:var(--primary);letter-spacing:-.02em;line-height:1.1}
.data-item .txt{font-size:13.5px;color:var(--ink-2);margin-top:6px}
@media(max-width:991px){.data-grid{grid-template-columns:repeat(2,1fr);gap:24px}}
@media(max-width:480px){.data-grid{grid-template-columns:1fr}}
/* 深底板块 */
.sec-dark{background:var(--ink-block);color:#F4F1ED;border-top:0}
.sec-dark .eyebrow{color:#A9A29A}
.sec-dark .eyebrow::before{background:var(--primary)}
.dark-split{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.dark-split h2{font-size:clamp(1.6rem,3vw,2.4rem)}
.dark-split .lead{color:#BDB7AF;margin-top:18px;font-size:15.5px}
.safe-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 32px}
.safe-item{
  display:flex;gap:14px;padding:20px 0;border-bottom:1px solid rgba(255,255,255,.12);
}
.safe-item svg{color:#F2B7B0;flex:0 0 22px;margin-top:4px}
.safe-item h3{font-size:15px;margin-bottom:4px;color:#fff}
.safe-item p{font-size:13.5px;color:#A9A29A;margin:0;line-height:1.75}
@media(max-width:991px){
  .dark-split{grid-template-columns:1fr;gap:34px}
  .safe-grid{grid-template-columns:1fr}
}
/* 合作墙 */
.partner-wall{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-left:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;
}
.partner{
  height:94px;display:flex;align-items:center;justify-content:center;
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  font-size:14px;letter-spacing:.1em;color:var(--ink-2);
  filter:grayscale(1);opacity:.6;transition:all .22s ease;
}
.partner:hover{opacity:1;filter:grayscale(0);color:var(--primary)}
@media(max-width:767px){.partner-wall{grid-template-columns:1fr 1fr}}
/* FAQ */
.faq{max-width:900px}
.faq .accordion-item{background:transparent;border:0;border-top:1px solid var(--line);border-radius:0}
.faq .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq .accordion-header{margin:0}
.faq .accordion-button{
  background:transparent;box-shadow:none;border-radius:0;padding:22px 44px 22px 20px;
  font-size:16.5px;font-weight:600;color:var(--ink);position:relative;
}
.faq .accordion-button::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;
  background:var(--primary);opacity:0;transition:opacity .2s ease;
}
.faq .accordion-button:not(.collapsed)::before{opacity:1}
.faq .accordion-button:not(.collapsed){color:var(--primary-deep);background:transparent}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--primary);outline-offset:2px}
.faq .accordion-button::after{
  width:18px;height:18px;background-size:18px;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' fill='none' stroke='%2317161A' stroke-width='1.8' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  transition:transform .2s ease;
}
.faq .accordion-button:not(.collapsed)::after{
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' fill='none' stroke='%23B93A31' stroke-width='1.8' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
}
.faq .accordion-body{padding:0 44px 24px 20px;font-size:14.5px;color:var(--ink-2);line-height:1.9}
/* 保障条 */
.guard-bar{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:#fff}
.guard{
  display:flex;align-items:center;gap:12px;padding:22px 24px;
  border-right:1px solid var(--line);font-size:14px;letter-spacing:.02em;color:var(--ink-2);
}
.guard:last-child{border-right:0}
.guard svg{color:var(--accent);flex:0 0 20px}
@media(max-width:767px){
  .guard-bar{grid-template-columns:1fr}
  .guard{border-right:0;border-bottom:1px solid var(--line)}
  .guard:last-child{border-bottom:0}
}
/* 联系表单 */
.contact-split{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:start}
.contact-list{margin-top:24px;display:grid;gap:14px}
.contact-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2)}
.contact-list svg{color:var(--primary);flex:0 0 18px;margin-top:4px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;box-shadow:var(--sh-1)}
.f-field{margin-bottom:16px}
.f-label{display:block;font-size:13px;letter-spacing:.06em;color:var(--ink-2);margin-bottom:6px}
.f-control{
  width:100%;border:1px solid var(--line);border-radius:12px;padding:12px 14px;
  background:#fff;font-size:14.5px;transition:border-color .18s ease,box-shadow .18s ease;
}
.f-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(226,85,74,.16)}
textarea.f-control{resize:vertical;min-height:104px}
.form-note{font-size:12.5px;color:var(--ink-2);margin-top:14px;line-height:1.7}
.form-ok{
  display:none;margin-top:14px;padding:12px 14px;border:1px solid var(--accent);
  border-radius:var(--r-sm);color:var(--accent);font-size:13.5px;background:#F2F7F4;
}
.form-ok.show{display:block}
@media(max-width:991px){.contact-split{grid-template-columns:1fr;gap:32px}}
/* 页脚 */
.site-footer{background:var(--ink-block);color:#D9D4CD;padding:72px 0 0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.foot-brand .brand-name{color:#fff}
.foot-brand .brand-sub{color:#9A948D}
.foot-brand p{font-size:13.5px;color:#9A948D;margin-top:18px;line-height:1.85;max-width:280px}
.social-row{display:flex;gap:10px;margin-top:18px}
.social-row a{
  width:36px;height:36px;border:1px solid rgba(255,255,255,.18);border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;color:#C9C4BD;
  transition:all .2s ease;
}
.social-row a:hover{color:#fff;border-color:var(--primary);background:var(--primary)}
.foot-col h4{font-size:13px;letter-spacing:.14em;color:#fff;margin-bottom:16px;font-weight:600}
.foot-col ul{display:grid;gap:10px}
.foot-col a{font-size:13.5px;color:#A9A29A}
.foot-col a:hover{color:var(--primary)}
.foot-info{font-size:13.5px;color:#A9A29A;line-height:1.9}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:52px;padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#8E8881;
}
@media(max-width:991px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:575px){.foot-grid{grid-template-columns:1fr}}
/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s cubic-bezier(.22,.61,.36,1),transform .48s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn-c,.bcard,.news-card,.scene-card,.cal-card,.story,.opinion,.hero-photo img,.news-thumb img,.bcard .bimg img,.avatar{transition:none}
  .btn-c:hover,.bcard:hover,.news-card:hover,.scene-card:hover,.cal-card:hover,.story:hover,.opinion:hover{transform:none}
}
@media(max-width:767px){
  .sec{padding:56px 0}
  .wrap{padding:0 20px}
  .sec-head{margin-bottom:32px}
}

/* roulang page: article */
:root{
  --ink:#17161A;
  --ink-2:#4A464E;
  --line:#E8E2DA;
  --bg:#FBF8F4;
  --surface:#FFFFFF;
  --ink-block:#1E1B20;
  --primary:#E2554A;
  --primary-deep:#B93A31;
  --primary-soft:#FBE7E3;
  --accent:#4C6B5A;
  --highlight:#F6E3D2;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,22,26,.06);
  --sh-2:0 24px 48px -32px rgba(23,22,26,.35);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--surface);
  color:var(--ink);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary)}
input,select,textarea,button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0}
::selection{background:var(--primary-soft);color:var(--primary-deep)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px}
.num{font-family:"Manrope",system-ui,sans-serif;font-variant-numeric:tabular-nums}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.16em;color:var(--ink-2);
  text-transform:uppercase;font-weight:600;margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--primary);display:inline-block}
.sec-title{font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.2;font-weight:700}
.sec-lead{color:var(--ink-2);font-size:16px;max-width:760px;margin-top:16px}

/* 按钮 */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;background:transparent;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-c:active{transform:translateY(1px)}
.btn-c .arw{transition:transform .18s ease}
.btn-c:hover .arw{transform:translateX(4px)}
.btn-c.primary{background:var(--primary);color:#fff}
.btn-c.primary:hover{background:var(--primary-deep);color:#fff;transform:translateY(-1px)}
.btn-c.ghost{border-color:var(--ink);color:var(--ink)}
.btn-c.ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-c.sm{padding:10px 20px;font-size:14px}
.btn-c.block{width:100%}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink)}
.btn-text .arw{transition:transform .18s ease}
.btn-text:hover{color:var(--primary)}
.btn-text:hover .arw{transform:translateX(4px)}

/* 徽章与标签 */
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);border:1px solid var(--line);
  font-size:13px;letter-spacing:.04em;color:var(--ink-2);background:#fff;
}
.pill.fill{background:var(--primary-soft);border-color:transparent;color:var(--primary-deep);font-weight:600}
.pill.accent{background:#EDF2EE;border-color:transparent;color:var(--accent);font-weight:600}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);font-size:13px;color:var(--ink-2);background:#fff;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.tag:hover{background:var(--primary-soft);border-color:var(--primary-soft);color:var(--primary-deep)}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease,background .22s ease;
}
.brand-row{height:68px;display:flex;align-items:center;transition:height .22s ease}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{width:38px;height:38px;flex:0 0 38px;color:var(--primary);transition:width .22s ease,height .22s ease}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:15px;font-weight:700;letter-spacing:.01em;color:var(--ink)}
.brand-sub{font-size:11px;letter-spacing:.14em;color:var(--ink-2)}
.brand-tools{display:flex;align-items:center;gap:16px}
.nav-search{
  display:flex;align-items:center;gap:8px;padding:7px 16px;min-width:220px;
  border:1px solid var(--line);border-radius:var(--r-pill);background:var(--bg);
  transition:border-color .18s ease,background .18s ease;
}
.nav-search:focus-within{border-color:var(--primary);background:#fff}
.nav-search svg{color:var(--ink-2);flex:0 0 16px}
.nav-search input{border:0;background:transparent;outline:none;font-size:13px;width:100%}
.nav-toggle{
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.channel-row{
  border-top:1px solid var(--line);height:44px;overflow:hidden;
  transition:height .22s ease,opacity .22s ease,border-color .22s ease;
}
.channel-nav{display:flex;align-items:center;gap:30px;height:44px;font-size:14px;overflow-x:auto;scrollbar-width:none}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{
  position:relative;display:inline-flex;align-items:center;height:44px;color:var(--ink-2);
  transition:color .18s ease;white-space:nowrap;
}
.channel-nav a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--primary);
  transition:right .24s ease;
}
.channel-nav a:hover{color:var(--primary)}
.channel-nav a:hover::after{right:0}
.channel-nav a.active{color:var(--ink);font-weight:600}
.channel-nav a.active::after{right:0}
.site-header.is-stuck{background:rgba(255,255,255,.92);backdrop-filter:blur(8px);box-shadow:var(--sh-1)}
.site-header.is-stuck .brand-row{height:64px}
.site-header.is-stuck .channel-row{height:0;opacity:0;border-top-color:transparent}
.site-header.is-stuck .brand-mark{width:32px;height:32px;flex:0 0 32px}
.offcanvas{background:#fff;max-width:340px}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 22px;align-items:center}
.offcanvas-body{padding:18px 22px}
.off-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink);
}
.off-nav a:hover{color:var(--primary)}
.off-nav svg{color:var(--ink-2)}
.off-note{font-size:13px;color:var(--ink-2);line-height:1.7;margin-top:18px}

/* 文章顶部区 */
.article-top{background:var(--bg);padding:64px 0 0;border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-2)}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--primary)}
.crumb span.sep{color:#BDB6AD}
.crumb-now{color:var(--ink)}
.article-head{margin-top:26px;max-width:820px}
.article-head h1{
  font-size:clamp(1.75rem,3.6vw,2.6rem);
  line-height:1.24;letter-spacing:-.02em;font-weight:700;margin-top:16px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px;font-size:13.5px;color:var(--ink-2)}
.meta-avatar{
  width:32px;height:32px;border-radius:50%;background:var(--primary-soft);color:var(--primary-deep);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
.meta-name{color:var(--ink);font-weight:600}
.dot{width:4px;height:4px;border-radius:50%;background:#C9C2B9;display:inline-block}
.article-cover{
  margin-top:34px;border-radius:var(--r-lg) var(--r-lg) 0 0;overflow:hidden;
  aspect-ratio:16/7;background:var(--highlight);
}
.article-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.article-cover:hover img{transform:scale(1.02)}

/* 正文 */
.article-main{background:var(--surface);padding:56px 0 72px}
.article-body{
  max-width:800px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--ink-2);
}
.article-body h2{
  font-size:clamp(1.3rem,2.4vw,1.6rem);line-height:1.4;font-weight:700;color:var(--ink);
  margin:2.2em 0 .75em;padding-left:14px;border-left:3px solid var(--primary);
}
.article-body h3{font-size:1.18rem;line-height:1.5;font-weight:600;color:var(--ink);margin:1.7em 0 .6em}
.article-body p{margin:0 0 1.2em}
.article-body a{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--primary)}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.3em}
.article-body li{margin:.45em 0}
.article-body ul li::marker{color:var(--primary)}
.article-body ol li::marker{color:var(--primary);font-weight:700}
.article-body blockquote{
  margin:1.7em 0;padding:18px 22px;background:var(--highlight);
  border-left:3px solid var(--primary);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);margin:1.6em 0;background:var(--highlight);height:auto}
.article-body figure{margin:1.7em 0}
.article-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:1.7em 0;font-size:15px}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:11px 12px;text-align:left}
.article-body th{color:var(--ink);font-weight:600;background:var(--bg)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}

/* 空态 */
.empty-state{
  text-align:center;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:56px 24px;min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
}
.empty-state svg{color:var(--primary)}
.empty-state h2{font-size:1.25rem;font-weight:700;color:var(--ink);border:0;padding:0;margin:0}
.empty-state p{font-size:14.5px;color:var(--ink-2);max-width:420px}

/* 文末标签 */
.tag-block{max-width:800px;margin:44px auto 0;padding-top:28px;border-top:1px solid var(--line)}
.tag-block h2{font-size:13px;letter-spacing:.14em;color:var(--ink-2);font-weight:600;text-transform:uppercase;margin-bottom:14px}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}

/* 相关推荐 */
.related{background:var(--bg);padding:72px 0;border-top:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(226,85,74,.35);color:var(--ink)}
.rel-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--highlight)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.rel-body h3{font-size:1rem;line-height:1.5;font-weight:600;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body p{font-size:13.5px;line-height:1.75;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-time{font-size:12.5px;color:#8C868F;margin-top:auto}

/* 上/下与返回 */
.nav-back{background:var(--surface);padding:64px 0;border-top:1px solid var(--line)}
.back-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:20px;align-items:center}
.back-card{
  display:block;border:1px solid var(--line);border-radius:var(--r-md);padding:20px 22px;
  background:var(--surface);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.back-card:hover{border-color:rgba(226,85,74,.4);transform:translateY(-3px);box-shadow:var(--sh-2);color:var(--ink)}
.back-card .back-label{font-size:12.5px;letter-spacing:.12em;color:#8C868F;text-transform:uppercase;display:block;margin-bottom:6px}
.back-card strong{font-size:15px;font-weight:600;color:var(--ink);display:block}
.back-card.right{text-align:right}
.back-center{white-space:nowrap}

/* 底部 CTA */
.article-cta{background:var(--highlight);padding:64px 0;border-top:1px solid var(--line)}
.cta-inner{display:flex;flex-direction:column;align-items:center;text-align:center;gap:16px}
.cta-inner h2{font-size:clamp(1.35rem,2.6vw,1.9rem);font-weight:700;line-height:1.35;color:var(--ink)}
.cta-inner p{font-size:15px;color:var(--ink-2);max-width:560px}

/* 页脚 */
.site-footer{background:var(--ink-block);color:#C9C4CC;padding:72px 0 0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.site-footer .brand-mark{color:var(--primary)}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:#9C969F}
.foot-brand p{font-size:14px;line-height:1.8;color:#A9A3AC;margin:18px 0 20px;max-width:330px}
.social-row{display:flex;gap:10px}
.social-row a{
  width:34px;height:34px;border:1px solid rgba(255,255,255,.18);border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;color:#C9C4CC;
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.social-row a:hover{background:var(--primary);border-color:var(--primary);color:#fff}
.foot-col h4{font-size:14px;color:#fff;letter-spacing:.06em;margin-bottom:16px;font-weight:600}
.foot-col ul{list-style:none;padding:0;margin:0}
.foot-col li{margin-bottom:10px}
.foot-col a{font-size:14px;color:#A9A3AC}
.foot-col a:hover{color:#fff}
.foot-col p{font-size:14px;color:#A9A3AC;margin-bottom:8px;line-height:1.8}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8C868F;
}
.foot-bottom span{display:inline-block}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s cubic-bezier(.22,.61,.36,1),transform .48s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1199px){
  .rel-grid{gap:20px}
}
@media (max-width:991px){
  .wrap{padding:0 24px}
  .channel-row{display:none}
  .nav-search{display:none}
  .brand-row{height:62px}
  .site-header.is-stuck .brand-row{height:58px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .back-grid{grid-template-columns:1fr;gap:14px}
  .back-card.right{text-align:left}
  .back-center{text-align:center}
}
@media (max-width:767px){
  .article-top{padding:44px 0 0}
  .article-main{padding:40px 0 56px}
  .article-body{font-size:16px;line-height:1.9}
  .related{padding:56px 0}
  .rel-grid{grid-template-columns:1fr}
  .article-cover{aspect-ratio:16/9;margin-top:26px}
  .nav-back,.article-cta{padding:48px 0}
  .site-footer{padding:56px 0 0}
  .foot-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:575px){
  .wrap{padding:0 20px}
  .brand-name{font-size:14px}
  .btn-c{padding:12px 22px;font-size:14px}
  .article-meta{gap:10px;font-size:12.5px}
  .foot-bottom{flex-direction:column;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#17161A;
  --ink-2:#4A464E;
  --line:#E8E2DA;
  --bg:#FBF8F4;
  --surface:#FFFFFF;
  --ink-block:#1E1B20;
  --primary:#E2554A;
  --primary-deep:#B93A31;
  --primary-soft:#FBE7E3;
  --accent:#4C6B5A;
  --highlight:#F6E3D2;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,22,26,.06);
  --sh-2:0 24px 48px -32px rgba(23,22,26,.35);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--surface);color:var(--ink);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary)}
button{font:inherit}
h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:-.01em;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px}
.num{font-family:"Manrope",system-ui,sans-serif;font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.16em;
  color:var(--ink-2);font-weight:600;margin-bottom:16px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--primary);display:inline-block}
/* 按钮 */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;background:transparent;
  transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-c:active{transform:translateY(1px)}
.btn-c .arw{transition:transform .18s ease}
.btn-c:hover .arw{transform:translateX(4px)}
.btn-c.primary{background:var(--primary);color:#fff}
.btn-c.primary:hover{background:var(--primary-deep);color:#fff;transform:translateY(-1px)}
.btn-c.ghost{border-color:var(--ink);color:var(--ink)}
.btn-c.ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-c.sm{padding:10px 20px;font-size:14px}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink)}
.btn-text .arw{transition:transform .18s ease}
.btn-text:hover{color:var(--primary)}
.btn-text:hover .arw{transform:translateX(4px)}
/* 标签 */
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);font-size:13px;letter-spacing:.04em;color:var(--ink-2);background:#fff;
}
.pill.fill{background:var(--primary-soft);border-color:transparent;color:var(--primary-deep);font-weight:600}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);font-size:13px;color:var(--ink-2);background:#fff;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.tag:hover{background:var(--primary-soft);border-color:var(--primary-soft);color:var(--primary-deep)}
/* 导航 */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease,background .22s ease;
}
.brand-row{height:68px;display:flex;align-items:center;transition:height .22s ease}
.brand-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{width:38px;height:38px;flex:0 0 38px;color:var(--primary);transition:width .22s ease,height .22s ease}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:15px;font-weight:700;color:var(--ink)}
.brand-sub{font-size:11px;letter-spacing:.14em;color:var(--ink-2)}
.brand-tools{display:flex;align-items:center;gap:14px}
.nav-search{
  display:flex;align-items:center;gap:8px;padding:7px 16px;min-width:220px;
  border:1px solid var(--line);border-radius:var(--r-pill);background:var(--bg);
  transition:border-color .18s ease,background .18s ease;
}
.nav-search:focus-within{border-color:var(--primary);background:#fff}
.nav-search svg{color:var(--ink-2);flex:0 0 16px}
.nav-search input{border:0;background:transparent;outline:none;font-size:13px;width:100%}
.nav-toggle{
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;
  display:none;align-items:center;justify-content:center;cursor:pointer;color:var(--ink);
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.channel-row{border-top:1px solid var(--line);height:44px;overflow:hidden;transition:height .22s ease,opacity .22s ease}
.channel-nav{display:flex;align-items:center;gap:30px;height:44px;font-size:14px;overflow-x:auto;scrollbar-width:none}
.channel-nav::-webkit-scrollbar{display:none}
.channel-nav a{position:relative;display:inline-flex;align-items:center;height:44px;color:var(--ink-2);white-space:nowrap}
.channel-nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--primary);transition:right .24s ease}
.channel-nav a:hover{color:var(--primary)}
.channel-nav a:hover::after{right:0}
.channel-nav a.active{color:var(--ink);font-weight:600}
.channel-nav a.active::after{right:0}
.site-header.is-stuck{background:rgba(255,255,255,.92);backdrop-filter:blur(8px);box-shadow:var(--sh-1)}
.site-header.is-stuck .brand-row{height:60px}
.site-header.is-stuck .brand-mark{width:32px;height:32px;flex:0 0 32px}
.offcanvas{background:#fff;max-width:340px}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 22px}
.offcanvas-body{padding:18px 22px}
.off-nav a{display:flex;align-items:center;justify-content:space-between;height:48px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink)}
.off-nav a:hover{color:var(--primary)}
.off-cta{margin-top:24px}
.off-note{margin-top:18px;font-size:13px;color:var(--ink-2);line-height:1.8}
/* 页面通用区块 */
.sec{padding:96px 0}
.sec.tint{background:var(--bg)}
.sec-head{margin-bottom:44px}
.sec-head h2{font-size:clamp(1.6rem,3vw,2.4rem);letter-spacing:-.02em}
.sec-head p{color:var(--ink-2);font-size:16px;max-width:720px;margin-top:14px}
.split-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap}
/* 分类页头 */
.cat-hero{background:var(--bg);padding:64px 0 48px;border-bottom:1px solid var(--line)}
.cat-hero-grid{display:grid;grid-template-columns:1fr auto;gap:48px;align-items:center}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);letter-spacing:.04em;margin-bottom:14px}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:#C9C1B8}
.cat-hero h1{font-size:clamp(1.8rem,3.4vw,2.6rem);letter-spacing:-.02em;max-width:780px}
.cat-hero-lead{margin-top:16px;color:var(--ink-2);font-size:16px;max-width:720px}
.cat-stats{display:flex;align-items:center;gap:36px;padding-left:40px;border-left:1px solid var(--line)}
.cat-stat .n{display:block;font-size:26px;font-weight:800;letter-spacing:-.02em;line-height:1.2}
.cat-stat .t{display:block;font-size:12.5px;color:var(--ink-2);letter-spacing:.06em;margin-top:6px}
/* 筛选条 */
.filter-bar{background:var(--surface);border-bottom:1px solid var(--line);padding:26px 0}
.filter-pills{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.filter-btn{
  padding:8px 20px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;
  font-size:13.5px;color:var(--ink-2);cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.filter-btn:hover{border-color:var(--primary);color:var(--primary)}
.filter-btn.active{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}
.filter-hint{margin-left:auto;font-size:13px;color:var(--ink-2);letter-spacing:.04em}
/* 列表卡片 */
.post-card{
  display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(226,85,74,.4)}
.post-thumb{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--highlight)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.post-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--ink-2);letter-spacing:.04em;margin-bottom:10px}
.post-meta .cat{color:var(--primary-deep);background:var(--primary-soft);border-radius:var(--r-pill);padding:2px 10px;font-weight:600}
.post-title{font-size:17.5px;font-weight:700;line-height:1.55}
.post-title a:hover{color:var(--primary)}
.post-ex{color:var(--ink-2);font-size:14.5px;margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;padding-top:16px}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--bg);border:1px dashed var(--line);border-radius:var(--r-lg);text-align:center;padding:40px 24px;
}
.empty-state svg{color:var(--ink-2)}
.empty-state p{color:var(--ink-2);font-size:14.5px}
.list-more{display:flex;justify-content:center;margin-top:40px}
/* 场景解读 */
.scene-grid{display:grid;grid-template-columns:5fr 6fr;gap:56px;align-items:center}
.scene-media{aspect-ratio:4/3;border-radius:var(--r-lg);overflow:hidden;background:var(--highlight);box-shadow:var(--sh-1)}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.scene-media:hover img{transform:scale(1.03)}
.scene-list{margin-top:28px;border-top:1px solid var(--line)}
.scene-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.scene-item .idx{font-family:"Manrope",system-ui,sans-serif;font-size:14px;font-weight:700;color:var(--primary);flex:0 0 28px;padding-top:2px}
.scene-item h3{font-size:16px;font-weight:600}
.scene-item p{color:var(--ink-2);font-size:14.5px;margin-top:4px}
/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:8px}
.step{position:relative;padding-top:26px;border-top:1px solid var(--line)}
.step .big{
  font-family:"Manrope",system-ui,sans-serif;font-size:44px;font-weight:800;line-height:1;
  color:var(--highlight);letter-spacing:-.03em;display:block;margin-bottom:12px;
  transition:color .22s ease;
}
.step:hover .big{color:var(--primary-soft)}
.step h3{font-size:16.5px;font-weight:600}
.step p{color:var(--ink-2);font-size:14.5px;margin-top:8px}
/* 安全提示 */
.safety-sec{background:var(--highlight)}
.safety-card{
  background:#fff;border-radius:var(--r-lg);border-left:3px solid var(--primary);
  padding:40px 44px;box-shadow:var(--sh-1);
}
.safety-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px;margin-top:28px}
.safety-item{display:flex;gap:14px;padding:18px 0;border-top:1px solid var(--line)}
.safety-item svg{flex:0 0 22px;color:var(--accent);margin-top:4px}
.safety-item h3{font-size:15.5px;font-weight:600}
.safety-item p{color:var(--ink-2);font-size:14.5px;margin-top:4px}
/* FAQ */
.faq-acc{max-width:900px;border-bottom:1px solid var(--line)}
.faq-acc .accordion-item{border:0;border-top:1px solid var(--line);background:transparent;border-radius:0}
.faq-acc .accordion-button{
  background:transparent;box-shadow:none;border-radius:0;color:var(--ink);
  font-size:17px;font-weight:600;padding:24px 48px 24px 20px;position:relative;line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){
  background:var(--primary-soft);color:var(--ink);box-shadow:inset 3px 0 0 var(--primary);
}
.faq-acc .accordion-button:focus{box-shadow:inset 3px 0 0 var(--primary);outline:none}
.faq-acc .accordion-button::after{
  content:"";position:absolute;right:18px;top:50%;width:9px;height:9px;margin-top:-7px;
  border-right:1.8px solid var(--ink-2);border-bottom:1.8px solid var(--ink-2);
  background-image:none;transform:rotate(45deg);
  transition:transform .2s ease,color .2s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(225deg);margin-top:-2px}
.faq-acc .accordion-body{padding:0 20px 26px;color:var(--ink-2);font-size:15px;line-height:1.9}
/* 收尾 CTA */
.cta-final{text-align:center;padding:88px 0}
.cta-final h2{font-size:clamp(1.5rem,2.6vw,2.1rem);max-width:720px;margin:0 auto}
.cta-final p{color:var(--ink-2);font-size:15px;margin-top:16px;max-width:620px;margin-left:auto;margin-right:auto}
.cta-final .btn-c{margin-top:28px}
.cta-small{font-size:13px;color:var(--ink-2);margin-top:16px;letter-spacing:.04em}
/* 页脚 */
.site-footer{background:var(--ink-block);color:rgba(255,255,255,.78);padding:72px 0 28px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.55)}
.site-footer .brand-mark{color:var(--primary)}
.foot-brand p{font-size:14px;color:rgba(255,255,255,.6);margin-top:18px;max-width:330px}
.social-row{display:flex;gap:10px;margin-top:22px}
.social-row a{
  width:34px;height:34px;border:1px solid rgba(255,255,255,.18);border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;color:rgba(255,255,255,.7);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.social-row a:hover{color:#fff;border-color:var(--primary);background:rgba(226,85,74,.2)}
.foot-col h4{font-size:14px;letter-spacing:.08em;color:#fff;margin-bottom:18px}
.foot-col li{margin-bottom:10px}
.foot-col a{font-size:14px;color:rgba(255,255,255,.65)}
.foot-col a:hover{color:var(--primary)}
.foot-meta{font-size:13.5px;color:rgba(255,255,255,.6);margin-bottom:8px}
.foot-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.5);
}
/* 动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s cubic-bezier(.22,.61,.36,1),transform .48s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
/* 响应式 */
@media (max-width:1199px){
  .cat-hero-grid{grid-template-columns:1fr;gap:28px}
  .cat-stats{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:24px;flex-wrap:wrap;gap:28px}
  .scene-grid{grid-template-columns:1fr;gap:36px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:991px){
  .nav-search{display:none}
  .channel-row{display:none}
  .nav-toggle{display:inline-flex}
  .brand-row{height:62px}
  .sec{padding:72px 0}
  .safety-grid{grid-template-columns:1fr}
  .safety-card{padding:32px 26px}
  .filter-hint{display:none}
}
@media (max-width:767px){
  .wrap{padding:0 20px}
  .sec{padding:56px 0}
  .cat-hero{padding:44px 0 36px}
  .steps{grid-template-columns:1fr;gap:0}
  .step{padding:22px 0 22px 0;border-top:1px solid var(--line)}
  .step .big{font-size:34px;margin-bottom:8px}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .foot-bottom{flex-direction:column;gap:8px}
  .split-head{align-items:flex-start}
  .post-body{padding:18px 18px 20px}
  .cta-final{padding:64px 0}
}
@media (max-width:575px){
  .brand-name{font-size:14px}
  .brand-tools .btn-c{display:none}
  .post-thumb{aspect-ratio:16/9}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition:none !important;animation:none !important}
}