/* roulang page: index */
:root{
  --ink:#15150F;
  --paper:#F6F2E9;
  --surface:#FFFFFF;
  --tea:#1F3A2E;
  --tea-soft:#38574A;
  --amber:#C0763A;
  --line:#E2DBCC;
  --muted:#6E6A5E;
  --sand:#EFE9DC;
  --radius:16px;
  --shadow:0 1px 2px rgba(21,21,15,.04),0 12px 32px -18px rgba(31,58,46,.28);
  --shadow-hover:0 18px 44px -20px rgba(31,58,46,.34);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.page{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,p,figure{margin:0}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
.section{padding:88px 0;border-top:1px solid var(--line);position:relative}
.section--paper{background:var(--paper)}
.section--white{background:var(--surface)}
.section--sand{background:var(--sand)}
.section--tea{background:var(--tea);color:var(--paper);border-top-color:rgba(246,242,233,.12)}
.section-head{max-width:760px;margin-bottom:38px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:var(--amber)}
.section--tea .eyebrow{color:#E9B486}
.section-title{font-size:clamp(24px,3vw,34px);line-height:1.28;font-weight:700;letter-spacing:-.01em;margin-top:12px;color:var(--ink)}
.section--tea .section-title{color:var(--paper)}
.section-sub{margin-top:14px;font-size:15.5px;line-height:1.8;color:var(--muted);max-width:700px}
.section--tea .section-sub{color:rgba(246,242,233,.72)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;transition:background .3s var(--ease),color .3s var(--ease),transform .3s var(--ease),border-color .3s var(--ease);white-space:nowrap}
.btn i{transition:transform .3s var(--ease);font-size:13px}
.btn:hover i{transform:translateX(3px)}
.btn-primary{background:var(--tea);color:#F6F2E9}
.btn-primary:hover{background:var(--tea-soft);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{border-color:var(--tea);color:var(--tea);background:transparent}
.btn-outline:hover{background:var(--paper)}
.btn-amber{background:var(--amber);color:#FFFFFF}
.btn-amber:hover{background:#A9632D;transform:translateY(-1px)}
.btn-ghost-light{border-color:rgba(246,242,233,.38);color:var(--paper)}
.btn-ghost-light:hover{background:rgba(246,242,233,.1);border-color:rgba(246,242,233,.72)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,58,46,.22)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;background:var(--paper);color:var(--tea);border:1px solid var(--line);line-height:1.6}
.badge--amber{background:rgba(192,118,58,.1);color:var(--amber);border-color:rgba(192,118,58,.26)}
.media{position:relative;overflow:hidden;border-radius:20px;background:var(--sand)}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.media:hover img{transform:scale(1.03)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--tea);border-bottom:1px solid rgba(31,58,46,.25);padding-bottom:2px;transition:color .25s var(--ease),border-color .25s var(--ease),gap .25s var(--ease)}
.link-arrow:hover{color:var(--amber);border-color:var(--amber);gap:10px}

/* ===== 头部导航 ===== */
.site-header{position:sticky;top:0;z-index:80;background:rgba(246,242,233,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;height:78px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:36px;height:36px;display:grid;place-items:center;border-radius:10px;background:var(--tea);color:var(--paper);flex:0 0 auto}
.brand-text{display:flex;align-items:baseline;gap:6px;font-size:16px;line-height:1.2;letter-spacing:-.01em;white-space:nowrap}
.brand-text strong{font-weight:800;color:var(--ink)}
.brand-text em{font-style:normal;color:var(--muted);font-weight:500}
.brand-text span.dot{color:var(--amber);font-weight:800}
.icon-nav{display:flex;align-items:center;gap:6px;margin:0 auto}
.icon-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:78px;padding:8px 4px;border-radius:12px;border:1px solid transparent;color:var(--muted);font-size:12px;font-weight:600;transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease)}
.icon-nav a i{font-size:16px}
.icon-nav a:hover{background:#FFFFFF;border-color:var(--tea);color:var(--tea)}
.icon-nav a.active{background:var(--tea);border-color:var(--tea);color:var(--paper)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;border:1px solid var(--line);color:var(--tea);background:var(--surface);transition:border-color .25s var(--ease),background .25s var(--ease)}
.icon-btn:hover{border-color:var(--tea);background:var(--paper)}
.hamburger{display:none;width:40px;height:40px;place-items:center;border-radius:12px;border:1px solid var(--line);color:var(--tea);background:var(--surface)}
.hamburger:hover{border-color:var(--tea)}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--surface);padding:16px 0 20px}
.mobile-panel.open{display:block}
.mobile-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.mobile-grid a{display:flex;flex-direction:column;align-items:center;gap:6px;padding:14px 6px;border-radius:12px;border:1px solid var(--line);font-size:12.5px;font-weight:600;color:var(--tea);transition:background .25s var(--ease),border-color .25s var(--ease)}
.mobile-grid a i{font-size:17px}
.mobile-grid a:hover{background:var(--paper);border-color:var(--tea)}
.mobile-cta{margin-top:14px}

/* ===== Hero ===== */
.hero{position:relative;background:var(--tea);color:var(--paper);overflow:hidden;padding-top:64px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.22;filter:saturate(.85)}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(118deg,rgba(31,58,46,.97) 0%,rgba(31,58,46,.88) 52%,rgba(24,44,35,.72) 100%)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:start;padding-bottom:64px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid rgba(246,242,233,.28);font-size:12.5px;letter-spacing:.06em;color:rgba(246,242,233,.86)}
.hero-title{font-size:clamp(32px,5vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.015em;margin-top:20px;color:var(--paper)}
.hero-lead{margin-top:22px;font-size:16px;line-height:1.85;color:rgba(246,242,233,.78);max-width:640px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-tags li{font-size:12.5px;letter-spacing:.04em;padding:5px 12px;border-radius:8px;background:rgba(246,242,233,.08);border:1px solid rgba(246,242,233,.16);color:rgba(246,242,233,.78)}
.hero-panel{background:#182C23;border:1px solid rgba(246,242,233,.14);border-radius:20px;padding:26px;box-shadow:0 24px 60px -34px rgba(0,0,0,.6)}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid rgba(246,242,233,.16)}
.panel-head strong{font-size:15px;font-weight:700;letter-spacing:.02em}
.panel-head span{font-size:11.5px;letter-spacing:.1em;color:rgba(246,242,233,.5)}
.param-list li{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px dashed rgba(246,242,233,.14);font-size:14px}
.param-list li:last-child{border-bottom:none}
.param-list li span{color:rgba(246,242,233,.6);flex:0 0 auto}
.param-list li strong{font-weight:600;color:var(--paper);text-align:right}
.hero-panel .btn{margin-top:18px}
.hero-qr{position:absolute;right:26px;bottom:96px;color:rgba(246,242,233,.14);z-index:1;pointer-events:none}
.hero-metrics-wrap{position:relative;z-index:2;border-top:1px solid rgba(246,242,233,.16);background:rgba(21,21,15,.16)}
.hero-metrics{display:grid;grid-template-columns:repeat(4,1fr);padding:26px 0}
.hero-metrics li{padding:0 22px;border-left:1px solid rgba(246,242,233,.12)}
.hero-metrics li:first-child{border-left:none;padding-left:0}
.metric-num{font-size:clamp(22px,2.4vw,30px);font-weight:800;letter-spacing:-.02em;line-height:1.15;color:var(--paper)}
.metric-label{font-size:12.5px;letter-spacing:.06em;color:rgba(246,242,233,.58);margin-top:6px}

/* ===== 三步扫码条 ===== */
.step-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:0;position:relative}
.step-item{padding:0 24px 0 0;position:relative}
.step-item:last-child{padding-right:0}
.step-top{display:flex;align-items:center;gap:14px}
.step-num{width:44px;height:44px;flex:0 0 auto;display:grid;place-items:center;border-radius:12px;background:var(--tea);color:var(--paper);font-weight:800;font-size:16px;letter-spacing:.02em}
.step-name{font-size:18px;font-weight:700;letter-spacing:-.01em}
.step-line{margin-top:22px;height:1px;border-top:1px dashed rgba(31,58,46,.28)}
.step-desc{margin-top:14px;font-size:14.5px;line-height:1.8;color:var(--muted)}

/* ===== 功能分组 A ===== */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.feature-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,58,46,.22)}
.feature-card .fi{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;background:var(--paper);color:var(--tea);font-size:18px;margin-bottom:18px}
.feature-card h3{font-size:19px;font-weight:700;letter-spacing:-.01em}
.feature-card p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--muted)}
.feature-card .link-arrow{margin-top:20px;align-self:flex-start}
.span-7{grid-column:span 7}
.span-5{grid-column:span 5}

/* ===== 功能分组 B ===== */
.forum-wrap{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:start}
.num-list li{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
.num-list li:first-child{padding-top:0}
.num-list li:last-child{border-bottom:none;padding-bottom:0}
.num-idx{font-size:13px;font-weight:800;letter-spacing:.08em;color:var(--amber);flex:0 0 auto;padding-top:4px}
.num-body h3{font-size:17.5px;font-weight:700;letter-spacing:-.01em}
.num-body p{margin-top:8px;font-size:14.5px;line-height:1.8;color:var(--muted)}
.forum-note{margin-top:22px;padding:16px 18px;border-left:3px solid var(--amber);background:var(--paper);border-radius:0 12px 12px 0;font-size:14px;line-height:1.8;color:var(--tea)}

/* ===== 使用场景 ===== */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:start}
.scene-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(31,58,46,.22)}
.scene-card .media{border-radius:0;aspect-ratio:4/3}
.scene-body{padding:20px}
.scene-body h3{font-size:17px;font-weight:700;letter-spacing:-.01em}
.scene-body p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--muted)}
.scene-card:nth-child(2){margin-top:32px}
.scene-card:nth-child(4){margin-top:32px}

/* ===== 演示区 ===== */
.demo-stage{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-top:8px}
.device{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:16px;box-shadow:var(--shadow)}
.device-bar{display:flex;gap:6px;padding:2px 4px 12px}
.device-bar span{width:8px;height:8px;border-radius:50%;background:var(--line)}
.device-bar span:first-child{background:rgba(192,118,58,.55)}
.screen{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:18px;min-height:260px}
.screen-head{display:flex;align-items:center;justify-content:space-between;font-size:12px;letter-spacing:.08em;color:var(--muted);padding-bottom:12px;border-bottom:1px dashed var(--line)}
.screen-title{font-size:16px;font-weight:700;margin-top:14px;letter-spacing:-.01em}
.screen-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid rgba(226,219,204,.8);font-size:13.5px;color:var(--tea)}
.screen-row:last-child{border-bottom:none}
.screen-row .price{font-weight:700;color:var(--amber)}
.screen-tag{font-size:11.5px;padding:2px 9px;border-radius:999px;background:rgba(31,58,46,.08);color:var(--tea)}
.demo-foot{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:32px;flex-wrap:wrap}
.dot-btn{width:10px;height:10px;border-radius:50%;background:rgba(31,58,46,.22);border:none;padding:0;transition:background .25s var(--ease),transform .25s var(--ease)}
.dot-btn.is-on{background:var(--tea);transform:scale(1.25)}
.demo-caption{font-size:14px;color:var(--muted);text-align:center;flex-basis:100%;max-width:660px;margin:0 auto}

/* ===== 成功案例 ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
.case-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(31,58,46,.22)}
.case-card .media{border-radius:0;aspect-ratio:16/10}
.case-badge{position:absolute;top:14px;right:14px;z-index:2;background:rgba(246,242,233,.94);color:var(--amber);border:1px solid rgba(192,118,58,.3);font-size:11.5px;font-weight:700;padding:4px 11px;border-radius:999px}
.case-body{padding:22px}
.case-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted)}
.case-meta i{color:var(--amber);font-size:12px}
.case-body h3{font-size:18px;font-weight:700;margin-top:8px;letter-spacing:-.01em}
.case-body p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--muted)}

/* ===== 套餐价格 ===== */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:30px 26px;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
.price-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(31,58,46,.22)}
.price-name{font-size:16px;font-weight:700;letter-spacing:.02em}
.price-note{margin-top:6px;font-size:13px;color:var(--muted)}
.price-amount{display:flex;align-items:baseline;gap:6px;margin-top:20px}
.price-amount b{font-size:38px;font-weight:800;letter-spacing:-.02em;line-height:1}
.price-amount span{font-size:13.5px;color:var(--muted)}
.price-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.price-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--tea)}
.price-list li i{color:var(--amber);font-size:12px;margin-top:6px;flex:0 0 auto}
.price-card .btn{margin-top:26px}
.price-card--featured{background:var(--tea);border-color:var(--tea);color:var(--paper);transform:translateY(-10px);box-shadow:0 28px 60px -30px rgba(31,58,46,.6)}
.price-card--featured:hover{transform:translateY(-13px);border-color:var(--tea)}
.price-card--featured .price-name,.price-card--featured .price-amount b{color:var(--paper)}
.price-card--featured .price-note,.price-card--featured .price-amount span{color:rgba(246,242,233,.66)}
.price-card--featured .price-list li{color:rgba(246,242,233,.9)}
.price-card--featured .price-list li i{color:#E9B486}
.featured-flag{display:inline-block;align-self:flex-start;font-size:11.5px;font-weight:700;letter-spacing:.1em;padding:4px 12px;border-radius:999px;background:rgba(246,242,233,.14);color:#E9B486;border:1px solid rgba(233,180,134,.4);margin-bottom:14px}

/* ===== 评价墙 ===== */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,58,46,.22)}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:var(--paper);border:1px solid var(--line);color:var(--tea);font-weight:800;font-size:15px;flex:0 0 auto}
.review-name{font-size:15px;font-weight:700;line-height:1.3}
.review-role{font-size:12px;color:var(--muted);margin-top:2px}
.review-text{margin-top:16px;font-size:14.5px;line-height:1.85;color:var(--tea);flex:1}
.stars{margin-top:16px;display:flex;gap:3px;color:var(--amber);font-size:12px}

/* ===== 数据条 ===== */
.stat-bar{background:var(--ink);color:var(--paper)}
.stat-bar-inner{display:grid;grid-template-columns:repeat(4,1fr);padding:34px 0}
.stat-item{padding:0 24px;border-left:1px solid rgba(246,242,233,.14)}
.stat-item:first-child{border-left:none;padding-left:0}
.stat-num{font-size:clamp(26px,3vw,36px);font-weight:800;letter-spacing:-.02em;line-height:1.1}
.stat-label{margin-top:8px;font-size:13px;color:rgba(246,242,233,.6);letter-spacing:.04em}

/* ===== 资讯列表 ===== */
.news-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:150px minmax(0,1fr) 24px;gap:24px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line);transition:background .25s var(--ease)}
.news-item:hover{background:rgba(255,255,255,.7)}
.news-thumb{border-radius:12px;overflow:hidden;background:var(--sand);aspect-ratio:16/10}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-item:hover .news-thumb img{transform:scale(1.04)}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted)}
.news-meta .tag{color:var(--amber);font-weight:700}
.news-body h3{font-size:17.5px;font-weight:700;margin-top:6px;letter-spacing:-.01em;transition:color .25s var(--ease)}
.news-item:hover .news-body h3{color:var(--tea-soft)}
.news-body p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--muted)}
.news-arrow{color:var(--muted);transition:transform .25s var(--ease),color .25s var(--ease)}
.news-item:hover .news-arrow{color:var(--amber);transform:translateX(4px)}
.news-more{margin-top:32px;text-align:center}

/* ===== 品牌故事 ===== */
.story-wrap{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:center}
.story-media{border-radius:20px;overflow:hidden;background:var(--sand);aspect-ratio:4/5}
.story-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.story-media:hover img{transform:scale(1.03)}
.story-body h2{margin-top:12px}
.milestone{display:flex;flex-direction:column;gap:0;margin-top:26px}
.milestone li{display:flex;gap:18px;padding:18px 0;border-top:1px solid var(--line)}
.milestone li:first-child{border-top:none;padding-top:0}
.ms-idx{font-size:12.5px;font-weight:800;letter-spacing:.1em;color:var(--amber);flex:0 0 42px;padding-top:4px}
.ms-body h3{font-size:16.5px;font-weight:700}
.ms-body p{margin-top:6px;font-size:14px;line-height:1.8;color:var(--muted)}

/* ===== FAQ ===== */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 0 20px 16px;font-size:16.5px;font-weight:700;letter-spacing:-.01em;cursor:pointer;list-style:none;border-left:3px solid transparent;transition:border-color .25s var(--ease),color .25s var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;font-weight:400;line-height:1;color:var(--amber);transition:transform .3s var(--ease)}
.faq-item[open] summary{border-left-color:var(--amber);color:var(--tea)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-answer{padding:0 0 22px 19px;font-size:14.5px;line-height:1.9;color:var(--muted);animation:fadeIn .3s var(--ease)}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ===== 分类入口 ===== */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cat-card{display:flex;flex-direction:column;align-items:center;gap:10px;padding:26px 14px;background:var(--surface);border:1px solid var(--line);border-radius:14px;color:var(--tea);font-size:13.5px;font-weight:600;box-shadow:var(--shadow);transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease)}
.cat-card:hover{transform:translateY(-3px);border-color:var(--tea);box-shadow:var(--shadow-hover)}
.cat-card i{font-size:20px;color:var(--tea)}

/* ===== 开通 CTA ===== */
.cta-wrap{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:56px;align-items:center}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.cta-points li{display:flex;gap:12px;font-size:14.5px;line-height:1.8;color:rgba(246,242,233,.82)}
.cta-points i{color:#E9B486;font-size:13px;margin-top:6px;flex:0 0 auto}
.lead-form{background:var(--surface);color:var(--ink);border-radius:20px;padding:30px;box-shadow:0 30px 70px -36px rgba(0,0,0,.55)}
.lead-form h3{font-size:19px;font-weight:700;letter-spacing:-.01em}
.lead-form .form-sub{margin-top:6px;font-size:13.5px;color:var(--muted)}
.field{margin-top:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--tea);margin-bottom:6px}
.field input,.field select{width:100%;padding:11px 14px;border-radius:12px;border:1px solid var(--line);background:#FDFBF6;font-size:14.5px;color:var(--ink);transition:border-color .25s var(--ease),box-shadow .25s var(--ease);font-family:inherit}
.field input::placeholder{color:#A9A497}
.field input:focus,.field select:focus{outline:none;border-color:var(--tea);box-shadow:0 0 0 3px rgba(31,58,46,.12)}
.form-foot{margin-top:22px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.form-tip{font-size:12.5px;color:var(--muted)}

/* ===== 页脚 ===== */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2.5fr) minmax(0,2.5fr) minmax(0,3fr);gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-desc{font-size:13.5px;line-height:1.85;color:var(--muted);max-width:320px}
.footer-title{font-size:14px;font-weight:700;color:var(--ink);letter-spacing:.02em;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a,.footer-links span{font-size:13.5px;color:var(--muted);transition:color .25s var(--ease)}
.footer-links a:hover{color:var(--tea);text-decoration:underline;text-underline-offset:4px}
.city-tags{display:flex;flex-wrap:wrap;gap:8px}
.city-tags span{font-size:12.5px;padding:4px 11px;border-radius:999px;border:1px solid var(--line);color:var(--muted);background:var(--surface)}
.footer-note{font-size:13px;line-height:1.9;color:var(--muted)}
.footer-bottom{margin-top:48px;border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom p{font-size:12.5px;color:var(--muted)}
.footer-bottom .beian{font-size:12.5px;color:var(--muted)}

/* ===== 动效 ===== */
.js-anim .reveal{opacity:0;transform:translateY(12px);transition:opacity .45s var(--ease),transform .45s var(--ease)}
.js-anim .reveal.in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (max-width:1100px){
  .icon-nav a{width:68px;font-size:11.5px}
  .brand-text{font-size:15px}
}
@media (max-width:1023px){
  .icon-nav{display:none}
  .hamburger{display:grid}
  .header-actions .btn{display:none}
  .header-inner{height:70px}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding-bottom:48px}
  .hero{padding-top:44px}
  .hero-qr{display:none}
  .hero-metrics{grid-template-columns:repeat(2,1fr);gap:22px 0;padding:24px 0}
  .hero-metrics li:nth-child(3){border-left:none;padding-left:0}
  .step-strip{grid-template-columns:1fr;gap:28px}
  .step-item{padding-right:0}
  .span-7,.span-5{grid-column:span 12}
  .forum-wrap{grid-template-columns:1fr;gap:36px}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .scene-card:nth-child(2),.scene-card:nth-child(4){margin-top:0}
  .demo-stage{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr;gap:20px}
  .price-grid{grid-template-columns:1fr;gap:20px}
  .price-card--featured,.price-card--featured:hover{transform:none}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .stat-bar-inner{grid-template-columns:repeat(2,1fr);gap:26px 0;padding:28px 0}
  .stat-item:nth-child(3){border-left:none;padding-left:0}
  .story-wrap{grid-template-columns:1fr;gap:36px}
  .story-media{aspect-ratio:16/10}
  .cat-grid{grid-template-columns:repeat(4,1fr)}
  .cta-wrap{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .section{padding:66px 0}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .section{padding:52px 0}
  .hero-title{font-size:clamp(28px,8vw,36px)}
  .hero-lead{font-size:15px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .hero-metrics{grid-template-columns:1fr;gap:18px}
  .hero-metrics li{border-left:none;padding-left:0;border-top:1px solid rgba(246,242,233,.12);padding-top:16px}
  .hero-metrics li:first-child{border-top:none;padding-top:0}
  .hero-panel{padding:20px}
  .scene-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .stat-bar-inner{grid-template-columns:1fr}
  .stat-item{border-left:none;padding-left:0;border-top:1px solid rgba(246,242,233,.14);padding-top:18px}
  .stat-item:first-child{border-top:none;padding-top:0}
  .news-item{grid-template-columns:110px minmax(0,1fr);gap:16px}
  .news-arrow{display:none}
  .news-body h3{font-size:16px}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .lead-form{padding:22px}
  .form-foot{flex-direction:column;align-items:stretch}
  .form-foot .btn{width:100%}
  .feature-card{padding:22px}
  .price-card{padding:24px}
  .step-name{font-size:16.5px}
  .mobile-grid{grid-template-columns:repeat(3,1fr)}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .js-anim .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
 --ink:#15150F;
 --paper:#F6F2E9;
 --surface:#FFFFFF;
 --tea:#1F3A2E;
 --tea-soft:#38574A;
 --amber:#C0763A;
 --line:#E2DBCC;
 --muted:#6E6A5E;
 --sand:#EFE9DC;
 --radius:16px;
 --shadow:0 1px 2px rgba(21,21,15,.04),0 12px 32px -18px rgba(31,58,46,.28);
 --shadow-hover:0 18px 44px -20px rgba(31,58,46,.34);
 --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.page{
 margin:0;background:var(--paper);color:var(--ink);
 font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",sans-serif;
 font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;margin:0;padding:0}
p{margin:0}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
.section{padding:76px 0;border-top:1px solid var(--line);position:relative}
.section--paper{background:var(--paper)}
.section--white{background:var(--surface)}
.section--sand{background:var(--sand)}
.section--tea{background:var(--tea);color:var(--paper);border-top-color:rgba(246,242,233,.12)}
.section-head{max-width:760px;margin-bottom:34px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:var(--amber)}
.section--tea .eyebrow{color:#E9B486}
.section-title{font-size:clamp(23px,3vw,32px);line-height:1.28;font-weight:700;letter-spacing:-.01em;margin:12px 0 0;color:var(--ink)}
.section--tea .section-title{color:var(--paper)}
.section-sub{margin-top:14px;font-size:15.5px;line-height:1.8;color:var(--muted);max-width:700px}
.section--tea .section-sub{color:rgba(246,242,233,.72)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;border:1px solid transparent;transition:background .3s var(--ease),color .3s var(--ease),transform .3s var(--ease),border-color .3s var(--ease);white-space:nowrap}
.btn i{transition:transform .3s var(--ease);font-size:13px}
.btn:hover i{transform:translateX(3px)}
.btn-primary{background:var(--tea);color:#F6F2E9}
.btn-primary:hover{background:var(--tea-soft);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{border-color:var(--tea);color:var(--tea);background:transparent}
.btn-outline:hover{background:var(--paper)}
.btn-amber{background:var(--amber);color:#FFFFFF}
.btn-amber:hover{background:#A9632D;transform:translateY(-1px)}
.btn-ghost-light{border-color:rgba(246,242,233,.38);color:var(--paper)}
.btn-ghost-light:hover{background:rgba(246,242,233,.1);border-color:rgba(246,242,233,.72)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,58,46,.22)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;background:var(--paper);color:var(--tea);border:1px solid var(--line);line-height:1.6}
.badge--amber{background:rgba(192,118,58,.1);color:var(--amber);border-color:rgba(192,118,58,.26)}
.media{position:relative;overflow:hidden;border-radius:20px;background:var(--sand)}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.media:hover img{transform:scale(1.03)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--tea);border-bottom:1px solid rgba(31,58,46,.25);padding-bottom:2px;transition:color .25s var(--ease),border-color .25s var(--ease),gap .25s var(--ease)}
.link-arrow:hover{color:var(--amber);border-color:var(--amber);gap:10px}

/* ===== 头部导航 ===== */
.site-header{position:sticky;top:0;z-index:80;background:rgba(246,242,233,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;height:78px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:36px;height:36px;display:grid;place-items:center;border-radius:10px;background:var(--tea);color:var(--paper);flex:0 0 auto}
.brand-text{display:flex;align-items:baseline;gap:6px;font-size:16px;line-height:1.2;letter-spacing:-.01em;white-space:nowrap}
.brand-text strong{font-weight:800;color:var(--ink)}
.brand-text em{font-style:normal;color:var(--muted);font-weight:500}
.brand-text span.dot{color:var(--amber);font-weight:800}
.icon-nav{display:flex;align-items:center;gap:6px;margin:0 auto}
.icon-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:78px;padding:8px 4px;border-radius:12px;border:1px solid transparent;color:var(--muted);font-size:12px;font-weight:600;transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease)}
.icon-nav a i{font-size:16px}
.icon-nav a:hover{background:#FFFFFF;border-color:var(--tea);color:var(--tea)}
.icon-nav a.active{background:var(--tea);border-color:var(--tea);color:var(--paper)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;border:1px solid var(--line);color:var(--tea);background:var(--surface);transition:border-color .25s var(--ease),background .25s var(--ease)}
.icon-btn:hover{border-color:var(--tea);background:var(--paper)}
.hamburger{display:none;width:40px;height:40px;place-items:center;border-radius:12px;border:1px solid var(--line);color:var(--tea);background:var(--surface)}
.hamburger:hover{border-color:var(--tea)}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--surface);padding:16px 0 20px}
.mobile-panel.open{display:block}
.mobile-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.mobile-grid a{display:flex;flex-direction:column;align-items:center;gap:6px;padding:14px 6px;border-radius:12px;border:1px solid var(--line);font-size:12.5px;font-weight:600;color:var(--tea);transition:background .25s var(--ease),border-color .25s var(--ease)}
.mobile-grid a i{font-size:17px}
.mobile-grid a:hover,.mobile-grid a.active{background:var(--paper);border-color:var(--tea)}
.mobile-cta{margin-top:14px}

/* ===== 分类头部 ===== */
.cat-head{background:var(--sand);border-bottom:1px solid var(--line);padding:54px 0 40px}
.cat-head-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:end}
.cat-kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;font-weight:700;color:var(--amber);text-transform:uppercase}
.cat-title{font-size:clamp(27px,3.6vw,42px);line-height:1.2;font-weight:700;letter-spacing:-.01em;margin:14px 0 0;color:var(--ink)}
.cat-desc{margin-top:14px;max-width:660px;font-size:15.5px;line-height:1.85;color:var(--muted)}
.cat-tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end;max-width:300px}
.cat-tags .badge{background:var(--surface)}
.cat-stats{display:flex;gap:28px;margin-top:26px;flex-wrap:wrap}
.cat-stats div{display:flex;flex-direction:column;gap:2px}
.cat-stats strong{font-size:22px;font-weight:800;letter-spacing:-.01em;color:var(--tea)}
.cat-stats span{font-size:12.5px;color:var(--muted);letter-spacing:.04em}

/* ===== 筛选条 ===== */
.filter-section{padding:0;border-top:none;background:var(--paper)}
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:18px 0;border-bottom:1px solid var(--line)}
.chip{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:999px;border:1px solid var(--line);background:var(--surface);font-size:14px;font-weight:600;color:var(--tea);transition:background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease)}
.chip:hover{border-color:var(--tea);background:var(--paper)}
.chip.active{background:var(--tea);color:var(--paper);border-color:var(--tea)}
.filter-count{margin-left:auto;font-size:13px;color:var(--muted);letter-spacing:.03em}

/* ===== 列表 + 侧栏 ===== */
.cat-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:40px;align-items:start;padding:14px 0 0}
.post-list{display:flex;flex-direction:column}
.post-row{display:grid;grid-template-columns:200px minmax(0,1fr);gap:22px;padding:22px 0;border-bottom:1px solid var(--line);align-items:start;transition:background .25s var(--ease)}
.post-thumb{aspect-ratio:16/10;border-radius:14px;overflow:hidden;background:var(--sand);border:1px solid var(--line)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-row:hover .post-thumb img{transform:scale(1.03)}
.post-body h3{font-size:19px;line-height:1.45;font-weight:700;margin:0 0 8px;letter-spacing:-.01em;color:var(--ink);transition:color .25s var(--ease)}
.post-row:hover .post-body h3{color:var(--tea)}
.post-body p{font-size:14.5px;color:var(--muted);line-height:1.75}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:12px;font-size:13px;color:var(--muted)}
.post-meta .tag{display:inline-flex;align-items:center;padding:2px 10px;border-radius:999px;background:var(--paper);border:1px solid var(--line);font-size:12px;font-weight:600;color:var(--tea)}
.post-meta .arrow{margin-left:auto;color:var(--tea);transition:transform .25s var(--ease)}
.post-row:hover .post-meta .arrow{transform:translateX(3px)}

.side{position:sticky;top:98px;display:flex;flex-direction:column;gap:18px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.side-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--muted);text-transform:uppercase;margin:0 0 12px}
.side-card ul li{display:flex;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14px;line-height:1.6}
.side-card ul li:last-child{border-bottom:none;padding-bottom:0}
.side-card ul li span.num{flex:0 0 20px;height:20px;display:grid;place-items:center;border-radius:6px;background:var(--paper);color:var(--tea);font-size:11.5px;font-weight:700;margin-top:2px}
.side-card ul li a:hover{color:var(--amber)}
.side-desc{font-size:14px;line-height:1.8;color:var(--muted)}
.side-cta{background:var(--tea);color:var(--paper);border:1px solid var(--tea);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.side-cta p{font-size:14px;line-height:1.75;color:rgba(246,242,233,.8);margin:8px 0 16px}
.side-cta .side-title{color:#E9B486}

/* ===== 分页 ===== */
.pager{padding:34px 0 10px;text-align:center}
.pager-note{margin-top:14px;font-size:13.5px;color:var(--muted);letter-spacing:.03em}

/* ===== 热门横条 ===== */
.hscroll{display:flex;gap:18px;overflow-x:auto;padding-bottom:12px;scrollbar-width:thin}
.hscroll::-webkit-scrollbar{height:6px}
.hscroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
.hot-card{flex:0 0 268px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
.hot-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,58,46,.22)}
.hot-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--sand)}
.hot-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.hot-card:hover .thumb img{transform:scale(1.03)}
.hot-card .body{padding:16px 18px 18px}
.hot-card h3{font-size:15.5px;line-height:1.55;font-weight:700;margin:8px 0 0;color:var(--ink)}
.hot-card .meta{font-size:12.5px;color:var(--muted);margin-top:8px;display:flex;gap:10px;flex-wrap:wrap}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:860px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:0 22px;transition:border-color .25s var(--ease),box-shadow .25s var(--ease)}
.faq-item[open]{border-left:3px solid var(--amber);border-color:var(--line);box-shadow:var(--shadow)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;font-size:16px;font-weight:600;color:var(--ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{flex:0 0 auto;width:26px;height:26px;display:grid;place-items:center;border-radius:8px;border:1px solid var(--line);color:var(--tea);font-size:13px;transition:transform .25s var(--ease),background .25s var(--ease)}
.faq-item[open] summary .plus{background:rgba(192,118,58,.1);color:var(--amber);border-color:rgba(192,118,58,.3);transform:rotate(45deg)}
.faq-answer{padding:0 0 20px;font-size:14.8px;line-height:1.85;color:var(--muted);max-width:760px;animation:fadeIn .3s var(--ease)}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ===== 相关专题 ===== */
.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.topic-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
.topic-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(31,58,46,.22)}
.topic-card h3{font-size:19px;font-weight:700;margin:10px 0 10px;letter-spacing:-.01em}
.topic-card p{font-size:14.5px;line-height:1.8;color:var(--muted)}
.topic-links{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.topic-links a{display:flex;align-items:flex-start;gap:8px;font-size:14px;color:var(--tea);font-weight:600;line-height:1.6}
.topic-links a i{font-size:11px;margin-top:6px;color:var(--amber)}
.topic-links a:hover{color:var(--amber)}

/* ===== 订阅 ===== */
.sub-band{background:#E7EFE9;border-top:1px solid var(--line)}
.sub-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:32px;align-items:center;padding:52px 0}
.sub-inner h2{font-size:clamp(21px,2.4vw,27px);font-weight:700;line-height:1.35;margin:0 0 10px;letter-spacing:-.01em}
.sub-inner p{font-size:14.8px;color:var(--muted);line-height:1.8}
.sub-form{display:flex;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:6px 6px 6px 18px;box-shadow:var(--shadow)}
.sub-form input{flex:1;min-width:0;border:none;background:transparent;font-size:14.5px;color:var(--ink);padding:10px 0}
.sub-form input:focus{outline:none}
.sub-form input::placeholder{color:#9A9484}
.sub-form .btn{padding:11px 22px;font-size:14px}

/* ===== 页脚 ===== */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:56px 0 0;font-size:13.5px;color:var(--muted)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.footer-brand .brand{margin-bottom:14px}
.footer-desc{line-height:1.85;max-width:340px}
.footer-title{font-size:13px;font-weight:700;color:var(--ink);letter-spacing:.06em;margin-bottom:14px}
.footer-links li{margin-bottom:9px}
.footer-links a{transition:color .25s var(--ease)}
.footer-links a:hover{color:var(--tea);text-decoration:underline;text-underline-offset:4px}
.city-tags{display:flex;flex-wrap:wrap;gap:8px}
.city-tags span{display:inline-flex;padding:3px 10px;border-radius:999px;background:var(--surface);border:1px solid var(--line);font-size:12.5px;color:var(--tea)}
.footer-note{line-height:1.85}
.footer-bottom{border-top:1px solid var(--line);padding:18px 0 26px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.8px;color:var(--muted)}
.footer-keywords{border-top:1px solid var(--line);padding:18px 0 4px;font-size:12.5px;line-height:1.9;color:#8B8676}
.footer-keywords strong{color:var(--muted);font-weight:600}

/* ===== 动效 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
 html{scroll-behavior:auto}
 .reveal{opacity:1;transform:none;transition:none}
 .card,.post-row,.hot-card,.topic-card,.btn,.media img{transition:none}
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
 .icon-nav a{width:68px;font-size:11.5px}
 .cat-layout{grid-template-columns:minmax(0,1fr);gap:28px}
 .side{position:static;flex-direction:row;flex-wrap:wrap}
 .side-card,.side-cta{flex:1 1 260px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
 .cat-head-grid{grid-template-columns:1fr;gap:22px;align-items:start}
 .cat-tags{justify-content:flex-start;max-width:none}
}
@media (max-width:860px){
 .icon-nav{display:none}
 .hamburger{display:grid}
 .header-inner{justify-content:space-between;height:70px}
 .sub-inner{grid-template-columns:1fr;padding:44px 0}
 .topic-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
 .section{padding:52px 0}
 .cat-head{padding:38px 0 30px}
 .post-row{grid-template-columns:1fr;gap:14px;padding:20px 0}
 .post-thumb{aspect-ratio:16/9}
 .brand-text{font-size:14.5px}
 .brand-text em{display:none}
 .filter-count{margin-left:0;width:100%}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .footer-bottom{flex-direction:column}
 .hot-card{flex:0 0 240px}
 .side{flex-direction:column}
 .sub-form{flex-direction:column;border-radius:16px;padding:12px}
 .sub-form .btn{width:100%}
 .cat-stats{gap:18px}
}