:root{
  --bg:#f6f7fb; --card:#ffffff; --ink:#1a1f36; --ink2:#5a6178; --line:#e8eaf2;
  --pink:#ff4d97; --blue:#2e6bff; --green:#23c16b; --orange:#ff9f2e; --purple:#8b5cf6;
  --grad:linear-gradient(135deg,#ff4d97 0%,#8b5cf6 35%,#2e6bff 70%,#23c16b 100%);
  --grad-warm:linear-gradient(135deg,#ff6a3d 0%,#ff4d97 60%,#8b5cf6 100%);
  --shadow:0 6px 24px rgba(26,31,54,.08); --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:1120px;margin:0 auto;padding:0 20px}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{width:52px;height:52px;border-radius:12px;object-fit:cover;object-position:center 50%;box-shadow:0 2px 10px rgba(255,159,46,.25)}
.brand-text{font-size:17px;font-weight:800;letter-spacing:1px;background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nav{display:flex;gap:8px}
.nav a{padding:8px 22px;border-radius:999px;font-size:15px;font-weight:600;color:var(--ink2);transition:.25s}
.nav a:hover{color:var(--ink);background:#f0f2f9}
.nav a.active{background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.header-qq{display:flex;align-items:center;gap:7px;padding:9px 18px;border-radius:999px;border:1.5px solid var(--pink);color:var(--pink);font-weight:700;font-size:14px;transition:.25s}
.header-qq:hover{background:var(--pink);color:#fff}
@media(max-width:720px){
  .header-qq{display:none}
  .header-inner{gap:8px}
  .brand{gap:8px}
  .brand-text{font-size:15px}
  .brand-logo{width:44px;height:44px}
  .nav{gap:0;margin-left:auto}
  .nav a{padding:8px 9px;font-size:14px;white-space:nowrap}
}

/* ===== Carousel ===== */
.hero-wrap{position:relative}
.carousel{position:relative;height:440px;overflow:hidden;background:#0b0e1a}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .8s ease;display:flex;align-items:center;text-decoration:none;cursor:pointer}
.slide.on{opacity:1;z-index:2}
.slide-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.04)}
.slide-veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,10,24,.92) 0%,rgba(8,10,24,.75) 45%,rgba(8,10,24,.25) 100%)}
.slide-inner{position:relative;z-index:3;color:#fff;max-width:640px;padding:0 20px;margin:0 auto;width:100%}
@media(min-width:721px){.slide-inner{margin:0;max-width:1120px}}
.slide-tag{display:inline-flex;align-items:center;gap:8px;padding:5px 16px;border-radius:999px;font-size:13px;font-weight:700;letter-spacing:1px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);margin-bottom:18px}
.slide-tag b{background:var(--grad);padding:2px 10px;border-radius:999px}
.slide h2{font-size:34px;font-weight:800;line-height:1.35;margin-bottom:14px;text-shadow:0 2px 12px rgba(0,0,0,.4)}
@media(max-width:720px){.slide h2{font-size:23px}}
.slide p{color:rgba(255,255,255,.82);font-size:15px;margin-bottom:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
/* 首页轮播已改为整卡可点击，此样式现由 join 页「查看加入方式」按钮复用，勿删 */
.slide-cta{display:inline-flex;align-items:center;gap:8px;padding:12px 30px;border-radius:999px;font-weight:700;font-size:15px;color:#fff;background:var(--grad-warm);box-shadow:0 6px 20px rgba(255,77,151,.45);transition:.25s}
.slide-cta:hover{transform:translateY(-2px)}
/* —— 手机端（≤720px）：大轮播改圆角留白卡片 + 下方并排 2 张最新文章小卡 —— */
.hero-mini{display:none}
@media(max-width:720px){
.hero-wrap{padding:14px 14px 0}
.carousel{height:320px;border-radius:18px}
.slide-inner{padding:0 16px}
.hero-mini{display:block;overflow:hidden;margin-top:14px;padding:4px 4px 10px}
.mini-track{display:flex;gap:12px;transition:transform .65s ease;will-change:transform}
.mini-card{display:block;flex:0 0 calc(50% - 6px);background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);text-decoration:none;transition:.3s}
.mini-thumb{display:block;height:88px;background-size:cover;background-position:center}
.mini-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;padding:10px 11px 12px;font-size:13px;font-weight:700;line-height:1.55;color:var(--ink)}
}
.carousel-dots{position:absolute;z-index:5;bottom:22px;left:0;right:0;display:flex;justify-content:center;gap:10px}
.dot{width:26px;height:5px;border-radius:99px;background:rgba(255,255,255,.35);cursor:pointer;transition:.3s;border:none}
.dot.on{background:#fff;width:40px}

/* ===== Sections ===== */
.section{padding:56px 0 20px}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:26px}
.sec-head h3{font-size:24px;font-weight:800;position:relative;padding-left:16px}
.sec-head h3::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:99px;background:var(--grad)}
.sec-head span{font-size:14px;color:var(--ink2)}

/* ===== Article grid ===== */
.article-grid{display:grid;grid-template-columns:1fr;gap:14px;padding-bottom:56px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;display:flex;flex-direction:row;align-items:center;gap:16px;transition:.3s;box-shadow:var(--shadow)}
.card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(24,28,52,.12)}
.card-thumb{display:block;flex:none;width:104px;height:78px;border-radius:10px;overflow:hidden;background:#eef0f7}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
.card:hover .card-thumb img{transform:scale(1.06)}
.card-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:8px}
.card h4{font-size:16px;font-weight:800;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card h4 a:hover{color:var(--pink)}
.card-top{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--ink2)}
@media(max-width:760px){.card{padding:12px;gap:12px}.card-thumb{width:92px;height:68px}.card h4{font-size:15px}}
.card-cat{padding:3px 12px;border-radius:999px;font-weight:700;color:#fff;background:var(--grad);font-size:12px;letter-spacing:.5px}
.card-more:hover{color:var(--pink)}

/* ===== Pagination ===== */
.pagination{display:flex;justify-content:center;align-items:center;gap:8px;padding:0 0 56px;flex-wrap:wrap}
.pagination a,.pagination span{min-width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line);background:#fff;font-size:14px;font-weight:600;color:var(--ink2);padding:0 16px;transition:.25s}
.pagination a:hover{border-color:var(--pink);color:var(--pink)}
.pagination .cur{background:var(--grad-warm);color:#fff;border-color:transparent}
.pagination .disabled{opacity:.45;cursor:default}

/* ===== Docs page ===== */
.docs-hero{background:linear-gradient(135deg,#0b0e1a 0%,#231638 60%,#3d1230 100%);color:#fff;padding:70px 0;text-align:center}
.docs-hero h1{font-size:32px;font-weight:800;margin-bottom:12px}
.docs-hero p{color:rgba(255,255,255,.75);font-size:15px}
.docs-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;padding:44px 0 10px}
.doc-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow);transition:.3s;display:block}
.doc-card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(46,107,255,.14)}
.doc-icon{width:48px;height:48px;border-radius:12px;background:var(--grad);display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:#fff;font-size:22px;font-weight:800}
.doc-card h4{font-size:17px;font-weight:800;margin-bottom:8px}
.doc-card p{font-size:13.5px;color:var(--ink2)}
.poster-wall{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px;padding:10px 0 56px}
.poster-wall img{border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line)}
.poster-wall figure{margin:0}
.poster-wall figcaption{text-align:center;font-size:13px;color:var(--ink2);margin-top:10px}

/* ===== Join page ===== */
.join-hero{background:linear-gradient(135deg,#0b0e1a 0%,#2a1240 55%,#471331 100%);color:#fff;padding:80px 0;text-align:center}
.join-hero h1{font-size:34px;font-weight:800;margin-bottom:14px}
.join-hero p{color:rgba(255,255,255,.78);max-width:620px;margin:0 auto 30px}
.join-channels{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px;padding:44px 0 56px}
.channel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:34px 28px;text-align:center;box-shadow:var(--shadow);transition:.3s}
.channel:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(255,77,151,.15)}
.channel .ch-icon{width:62px;height:62px;margin:0 auto 18px;border-radius:18px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff}
.channel .ch-qr{width:158px;height:158px;object-fit:contain;margin:0 auto 18px;border-radius:12px;border:1px solid var(--line);padding:8px;background:#fff;box-shadow:var(--shadow)}
.channel h4{font-size:18px;font-weight:800;margin-bottom:8px}
.channel p{font-size:14px;color:var(--ink2);margin-bottom:16px}
.channel .ch-num{font-size:20px;font-weight:800;letter-spacing:1px;background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* ===== Article page ===== */
.article-hero{background:linear-gradient(135deg,#0b0e1a 0%,#231638 55%,#3d1230 100%);color:#fff;padding:64px 0 56px}
.article-hero .crumb{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:18px}
.article-hero .crumb a:hover{color:#fff}
.article-hero h1{font-size:30px;font-weight:800;line-height:1.4;max-width:840px;margin-bottom:16px}
@media(max-width:720px){
.article-hero{padding:24px 0 52px}
.article-hero .crumb{margin-bottom:14px}
.article-hero h1{font-size:22px}
.article-meta{margin-bottom:8px}
}
.article-meta{display:flex;gap:7px;align-items:center;font-size:11px;color:rgba(255,255,255,.45);margin-bottom:4px}
.article-meta .sep{opacity:.55}
.article-wrap{max-width:800px;margin:-34px auto 0;position:relative;z-index:5;padding:0 20px}
.article-body{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:44px 46px}
@media(max-width:720px){.article-body{padding:26px 20px}}
.article-body p{font-size:15.5px;color:#333a52;margin-bottom:20px;text-align:justify}
.article-body h4{font-size:19px;font-weight:800;margin:30px 0 14px}
.article-body figure{margin:26px 0}
.article-body img{border-radius:10px;box-shadow:var(--shadow);margin:0 auto}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink2);margin-top:10px}
.doc-points{margin:0 0 20px;padding:0;list-style:none}
.doc-points li{font-size:15.5px;color:#333a52;margin-bottom:10px;padding-left:18px;position:relative;line-height:1.7}
.doc-points li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--grad-warm)}
.doc-tip{margin:8px 0 40px;padding:16px 0 0;border:0;border-top:1px solid var(--line);font-size:12px;line-height:1.8;color:#a3a9bd;letter-spacing:.2px}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin:26px 0 46px;flex-wrap:wrap}
.article-nav a{flex:1;min-width:220px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;font-size:14px;color:var(--ink2);transition:.25s;box-shadow:var(--shadow)}
.article-nav a:hover{color:var(--pink);border-color:var(--pink)}
.article-nav a b{display:block;font-size:12px;color:var(--ink2);margin-bottom:4px}
.article-nav a.next{text-align:right}

/* ===== Footer ===== */
.site-footer{background:#0b0e1a;color:#aeb4c9;margin-top:30px}
.join-card{background:var(--grad-warm);border-radius:18px;padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;transform:translateY(-46px);box-shadow:0 16px 40px rgba(255,77,151,.4)}
.join-left h2{color:#fff;font-size:24px;font-weight:800;margin-bottom:4px}
.join-left p{color:rgba(255,255,255,.88);font-size:14px}
.join-right{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:999px;font-weight:700;font-size:14.5px;transition:.25s}
.btn-primary{background:#fff;color:#e8437d}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(0,0,0,.2)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.7);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.15)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;padding:6px 0 34px}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:760px){.join-card{padding:26px 22px;gap:14px;transform:translateY(-30px);border-radius:16px;box-shadow:0 12px 30px rgba(255,77,151,.32);text-align:center;flex-direction:column;align-items:center}.join-left h2{font-size:20px}.join-left p{font-size:13px}.join-right{width:100%;justify-content:center}.btn{padding:10px 20px;font-size:13.5px}}
@media(max-width:480px){.footer-grid{grid-template-columns:1fr}}
.footer-logo{width:52px;height:52px;border-radius:12px;object-fit:cover;object-position:center 50%;margin-bottom:12px}
.footer-name{color:#fff;font-weight:800;font-size:16px}
.footer-slogan{font-size:12.5px;color:#6b7290;letter-spacing:.5px;margin-top:2px}
.footer-col h4{color:#fff;font-size:14.5px;margin-bottom:14px;letter-spacing:1px}
.footer-col a,.footer-col p{display:block;font-size:13.5px;color:#8b93ad;margin-bottom:9px;transition:.2s}
.footer-col a:hover{color:#fff}
.footer-qq{font-weight:700;color:#d7dbeb !important}
.copyright{border-top:1px solid rgba(255,255,255,.08);padding:20px 0 26px;text-align:center;font-size:12.5px;color:#6b7290}
.copyright a{color:#9fb0d4;text-decoration:underline;text-underline-offset:2px;transition:color .2s}
.copyright a:hover{color:#fff}
.copyright p{margin-bottom:4px}