/* =========================================================
   网易云 - 品牌资讯站 全局样式
   设计基调：网易红 #C20C0C / 深墨 #1F1F2E / 暖白 #FAFAFB
   ========================================================= */
:root{
  --brand:#C20C0C;
  --brand-dark:#9E0A0A;
  --brand-light:#E6483D;
  --ink:#1F1F2E;
  --ink-2:#3A3A4A;
  --muted:#6B6B7B;
  --line:#E8E8EE;
  --bg:#FAFAFB;
  --bg-soft:#F3F3F6;
  --card:#FFFFFF;
  --gold:#D8A24A;
  --radius:14px;
  --shadow:0 8px 28px rgba(31,31,46,.08);
  --shadow-lg:0 18px 50px rgba(31,31,46,.14);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px}
a{color:inherit;text-decoration:none}
a:hover{color:var(--brand)}
img{max-width:100%;display:block}
ul,ol{list-style:none}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
section{padding:72px 0}
.section-head{max-width:760px;margin:0 auto 44px;text-align:center}
.section-head .kicker{display:inline-block;font-size:13px;letter-spacing:2px;color:var(--brand);font-weight:700;text-transform:uppercase;margin-bottom:10px}
.section-head h2{font-size:34px;line-height:1.25;font-weight:800;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16px}
.grid{display:grid;gap:24px}
.muted{color:var(--muted)}
.center{text-align:center}

/* ---------------- 按钮(全部 a 标签) ---------------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:40px;font-weight:700;font-size:15px;line-height:1;transition:.25s;border:1.5px solid transparent;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-light));color:#fff;box-shadow:0 10px 24px rgba(194,12,12,.28)}
.btn-primary:hover{background:linear-gradient(135deg,var(--brand-dark),var(--brand));color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(194,12,12,.36)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--brand);box-shadow:0 8px 22px rgba(0,0,0,.18)}
.btn-white:hover{background:#fff;color:var(--brand-dark);transform:translateY(-2px)}
.btn-lg{padding:16px 34px;font-size:16px}
.btn-sm{padding:9px 18px;font-size:13.5px}
.btn-block{width:100%}

/* ---------------- 顶部导航 ---------------- */
.topbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:20px;color:var(--ink)}
.brand img{width:36px;height:36px;border-radius:8px}
.brand span em{font-style:normal;color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{font-size:15px;font-weight:600;color:var(--ink-2);position:relative;padding:6px 0}
.nav-links a:hover,.nav-links a.active{color:var(--brand)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand);border-radius:2px}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--ink)}

/* ---------------- Hero ---------------- */
.hero{background:radial-gradient(1200px 600px at 80% -10%,#3A2A4A 0%,transparent 60%),linear-gradient(160deg,#20121B 0%,#2A1420 45%,#1F1F2E 100%);color:#fff;padding:88px 0 96px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(194,12,12,.14),transparent 50%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:2}
.hero .kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:1.5px;color:#F2B7A8;font-weight:700;margin-bottom:18px}
.hero h1{font-size:46px;line-height:1.18;font-weight:800;margin-bottom:20px}
.hero h1 .hl{color:var(--brand-light);background:linear-gradient(90deg,var(--brand-light),#FF8A75);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p.lead{font-size:17px;color:#E7E0E8;max-width:520px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-stats{display:flex;gap:34px;flex-wrap:wrap}
.hero-stats .stat b{font-size:26px;font-weight:800;color:#fff;display:block}
.hero-stats .stat span{font-size:13px;color:#B9B2BE}

/* ---------------- 客户端模拟器 ---------------- */
.player-wrap{perspective:1200px}
.player{background:linear-gradient(180deg,#1B1B26,#232331);border-radius:18px;box-shadow:0 30px 70px rgba(0,0,0,.5);border:1px solid rgba(255,255,255,.08);overflow:hidden;position:relative}
.player-top{display:flex;align-items:center;gap:8px;padding:12px 16px;background:#17171F;border-bottom:1px solid rgba(255,255,255,.06)}
.dot{width:11px;height:11px;border-radius:50%;display:inline-block}
.dot.r{background:#FF5F57}.dot.y{background:#FEBC2E}.dot.g{background:#28C840}
.player-top .ptitle{margin-left:8px;font-size:12px;color:#9a9aa8;letter-spacing:.5px}
.player-cover{position:relative;padding:26px 26px 0}
.player-cover .album{width:100%;aspect-ratio:1/1;border-radius:14px;object-fit:cover;box-shadow:0 16px 40px rgba(0,0,0,.5)}
.player-cover .badge{position:absolute;top:38px;right:38px;background:rgba(0,0,0,.55);color:#fff;font-size:11px;padding:4px 10px;border-radius:20px;backdrop-filter:blur(4px)}
.player-meta{padding:18px 26px 6px}
.player-meta h3{font-size:18px;color:#fff;font-weight:700}
.player-meta p{font-size:13px;color:#a3a3b2;margin-top:2px}
.player-bar{padding:10px 26px 22px}
.player-bar .timeline{height:4px;background:rgba(255,255,255,.12);border-radius:4px;position:relative;margin-bottom:8px}
.player-bar .timeline i{position:absolute;left:38%;top:0;bottom:0;width:38%;background:linear-gradient(90deg,var(--brand),var(--brand-light));border-radius:4px}
.player-bar .timeline::after{content:"";position:absolute;left:38%;top:-4px;width:12px;height:12px;border-radius:50%;background:#fff}
.player-bar .t{display:flex;justify-content:space-between;font-size:11px;color:#7c7c8c}
.player-ctrl{display:flex;align-items:center;justify-content:space-between;padding:0 26px 24px}
.player-ctrl .c-group{display:flex;align-items:center;gap:20px}
.pbtn{width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;transition:.2s}
.pbtn:hover{background:rgba(255,255,255,.16)}
.pbtn.play{width:56px;height:56px;background:linear-gradient(135deg,var(--brand),var(--brand-light));font-size:22px;box-shadow:0 8px 20px rgba(194,12,12,.45)}
.float-note{position:absolute;background:rgba(255,255,255,.96);color:var(--ink);border-radius:12px;padding:10px 14px;font-size:12px;font-weight:600;box-shadow:var(--shadow-lg);z-index:3}
.float-note.like{top:22%;left:-18px}
.float-note.list{top:55%;right:-22px}

/* ---------------- 公告区 ---------------- */
.notice-band{background:var(--card);border-bottom:1px solid var(--line)}
.notice-inner{display:flex;align-items:center;gap:16px;padding:18px 0}
.notice-tag{background:var(--brand);color:#fff;font-size:12px;font-weight:700;padding:5px 12px;border-radius:20px;flex:none}
.notice-inner a{font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.notice-inner a:hover{color:var(--brand)}
.notice-date{margin-left:auto;color:var(--muted);font-size:13px;flex:none}

/* ---------------- 卡片通用 ---------------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#e2d5d5}
.card .ic{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:18px;background:linear-gradient(135deg,#FDE9E9,#FBE0D8)}
.card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.card p{color:var(--muted);font-size:14.5px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-5{grid-template-columns:repeat(5,1fr)}

/* ---------------- 功能特性 ---------------- */
.feature-card{position:relative;overflow:hidden}
.feature-card .num{position:absolute;top:18px;right:22px;font-size:44px;font-weight:800;color:#F3E7E7;line-height:1}
.feature-card ul{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.feature-card ul li{font-size:12.5px;color:var(--ink-2);background:var(--bg-soft);padding:4px 10px;border-radius:14px}

/* ---------------- 对比表格 ---------------- */
.compare-table{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.compare-table table{width:100%;border-collapse:collapse;font-size:14.5px}
.compare-table th,.compare-table td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line)}
.compare-table thead th{background:linear-gradient(135deg,var(--brand),var(--brand-light));color:#fff;font-weight:700}
.compare-table thead th:first-child{background:var(--ink)}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table td.yes{color:#1a9e4b;font-weight:700}
.compare-table td.no{color:#c0c0cc}
.compare-table td.c1{font-weight:700}

/* ---------------- 新闻 ---------------- */
.tabs{display:flex;gap:10px;justify-content:center;margin-bottom:34px;flex-wrap:wrap}
.tabs a{padding:9px 22px;border-radius:30px;font-size:14px;font-weight:600;color:var(--ink-2);border:1.5px solid var(--line);background:#fff;transition:.2s}
.tabs a.active,.tabs a:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.news-card{display:flex;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);transition:.25s;align-items:center}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.news-card .thumb{width:180px;height:112px;border-radius:10px;object-fit:cover;flex:none}
.news-card .nc-body{flex:1}
.news-card .cat{font-size:12px;color:var(--brand);font-weight:700}
.news-card h3{font-size:17px;font-weight:700;margin:6px 0 8px;line-height:1.4}
.news-card .meta{font-size:12.5px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap}
.news-list{display:grid;gap:16px}

/* ---------------- 用户评论 ---------------- */
.review-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.review-card .stars{color:#F5A623;font-size:15px;letter-spacing:2px;margin-bottom:12px}
.review-card blockquote{font-size:15px;color:var(--ink-2);font-style:normal;margin-bottom:18px}
.reviewer{display:flex;align-items:center;gap:12px}
.reviewer .avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-light));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.reviewer b{display:block;font-size:14px}
.reviewer span{font-size:12.5px;color:var(--muted)}

/* ---------------- 下载区 ---------------- */
.download-hero{background:linear-gradient(160deg,#20121B,#2A1420);color:#fff;padding:80px 0;text-align:center}
.dl-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;margin-top:44px}
.dl-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:28px 18px;transition:.25s}
.dl-card:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.dl-card .os{font-size:38px;margin-bottom:14px}
.dl-card h3{font-size:16px;font-weight:700;margin-bottom:4px}
.dl-card p{font-size:12.5px;color:#b9b2be;margin-bottom:18px}
.dl-card .btn{width:100%;padding:11px 14px;font-size:13.5px}

/* ---------------- 信任背书 ---------------- */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.trust-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px 18px}
.trust-item .big{font-size:30px;font-weight:800;color:var(--brand);display:block}
.trust-item p{font-size:14px;color:var(--muted);margin-top:6px}

/* ---------------- 应用场景 ---------------- */
.scene-card{position:relative;border-radius:var(--radius);overflow:hidden;min-height:220px;display:flex;align-items:flex-end;padding:26px;color:#fff;box-shadow:var(--shadow)}
.scene-card::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(15,15,24,.86));z-index:1}
.scene-card .sc-body{position:relative;z-index:2}
.scene-card h3{font-size:20px;font-weight:800;margin-bottom:6px}
.scene-card p{font-size:13.5px;color:#ddd6e0}

/* ---------------- FAQ ---------------- */
.faq-list{max-width:860px;margin:0 auto;display:grid;gap:16px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.faq-q{padding:20px 24px;font-weight:700;font-size:17px;display:flex;align-items:center;gap:14px;cursor:pointer;color:var(--ink)}
.faq-q .q-num{flex:none;width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--brand-light));color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px}
.faq-a{padding:0 24px 22px;color:var(--muted);font-size:15px}
.faq-a ol{margin:10px 0 0 0;padding-left:0}
.faq-a ol li{position:relative;padding-left:26px;margin-bottom:8px;line-height:1.7}
.faq-a ol li::before{content:counter(step);counter-increment:step;position:absolute;left:0;top:0;width:19px;height:19px;border-radius:50%;background:var(--bg-soft);color:var(--brand);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center}
.faq-a ol{counter-reset:step}

/* ---------------- 面包屑 ---------------- */
.crumbs{background:var(--bg-soft);border-bottom:1px solid var(--line)}
.crumbs .container{padding-top:14px;padding-bottom:14px}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--muted);list-style:none}
.crumbs ol li+li::before{content:"›";margin-right:8px;color:#c2c2ce}
.crumbs ol a:hover{color:var(--brand)}

/* ---------------- 页头横幅(内页) ---------------- */
.page-hero{background:linear-gradient(160deg,#20121B,#2A1420);color:#fff;padding:64px 0;text-align:center}
.page-hero h1{font-size:38px;font-weight:800;margin-bottom:12px}
.page-hero p{color:#d5ceda;max-width:680px;margin:0 auto}

/* ---------------- 底部 CTA + 页脚 ---------------- */
.footer-cta{background:linear-gradient(135deg,var(--brand),var(--brand-light));color:#fff;padding:70px 0;text-align:center;position:relative;overflow:hidden}
.footer-cta::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 20% 20%,rgba(255,255,255,.12),transparent)}
.footer-cta h2{font-size:34px;font-weight:800;margin-bottom:14px;position:relative}
.footer-cta p{color:#ffe3dd;margin-bottom:28px;position:relative}
.footer-cta .btn{position:relative}
.footer{background:var(--ink);color:#c9c9d4;padding:56px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer ul li{margin-bottom:10px}
.footer ul a:hover{color:#fff}
.footer .brand{color:#fff;margin-bottom:14px}
.footer .desc{color:#9a9aa8;line-height:1.8;max-width:300px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;font-size:13px;color:#8a8a99}
.footer-bottom a{color:#b9b9c6}
.footer-bottom a:hover{color:#fff}

/* ---------------- 文章详情 ---------------- */
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start;padding:48px 0}
.article-main{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow)}
.article-main h1{font-size:32px;line-height:1.3;font-weight:800;margin-bottom:18px}
.article-meta{display:flex;flex-wrap:wrap;gap:18px;font-size:13.5px;color:var(--muted);padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:26px}
.article-body{font-size:16.5px;line-height:1.9;color:#2e2e3c}
.article-body p{margin-bottom:20px}
.article-body h2{font-size:24px;font-weight:800;margin:32px 0 16px;padding-left:14px;border-left:4px solid var(--brand)}
.article-body img{border-radius:12px;margin:22px 0;box-shadow:var(--shadow)}
.article-body .figcaption{font-size:13px;color:var(--muted);text-align:center;margin:-14px 0 22px}
.article-body blockquote{background:var(--bg-soft);border-left:4px solid var(--brand);padding:16px 20px;border-radius:0 10px 10px 0;margin:22px 0;color:var(--ink-2);font-style:italic}
.article-pager{display:flex;justify-content:space-between;gap:14px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line);flex-wrap:wrap}
.article-pager a{font-size:14px;font-weight:600;color:var(--ink-2);max-width:46%}
.article-pager a:hover{color:var(--brand)}
.back-list{display:inline-block;margin-bottom:20px;font-size:14px;font-weight:600;color:var(--muted)}
.back-list:hover{color:var(--brand)}

/* 侧栏 */
.sidebar{display:grid;gap:24px;position:sticky;top:88px}
.side-widget{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.side-widget h4{font-size:16px;font-weight:800;margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--brand)}
.hot-item{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.hot-item:last-child{border-bottom:none}
.hot-item .rank{font-size:22px;font-weight:800;color:var(--brand);width:30px;flex:none}
.hot-item h5{font-size:14px;font-weight:600;line-height:1.5}
.hot-item h5:hover{color:var(--brand)}
.hot-item .d{font-size:12px;color:var(--muted)}
.cat-list li{padding:9px 0;border-bottom:1px solid var(--line)}
.cat-list li:last-child{border-bottom:none}
.cat-list a{font-size:14.5px;font-weight:600;color:var(--ink-2);display:flex;justify-content:space-between}
.cat-list a:hover{color:var(--brand)}

/* 评论 */
.comments{margin-top:34px}
.comments h3{font-size:20px;font-weight:800;margin-bottom:20px}
.comment{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line)}
.comment .avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-light));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex:none}
.comment .cm-body b{font-size:14px}
.comment .cm-body .t{font-size:12px;color:var(--muted)}
.comment .cm-body p{font-size:14.5px;color:var(--ink-2);margin-top:6px}

/* 站点地图 */
.sitemap-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.sitemap-cols h3{font-size:18px;font-weight:800;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--brand)}
.sitemap-cols ul li{margin-bottom:10px}
.sitemap-cols ul a{font-size:14.5px;color:var(--ink-2);font-weight:600}
.sitemap-cols ul a:hover{color:var(--brand)}

/* ---------------- 响应式 ---------------- */
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr}
  .player{max-width:460px;margin:0 auto}
  .grid-4,.grid-5{grid-template-columns:repeat(2,1fr)}
  .dl-grid{grid-template-columns:repeat(2,1fr)}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .article-layout{grid-template-columns:1fr}
  .sidebar{position:static}
}
@media(max-width:680px){
  .nav-links,.nav-cta{display:none}
  .nav-toggle{display:block}
  .hero h1{font-size:32px}
  section{padding:52px 0}
  .grid-2,.grid-3,.grid-4,.grid-5{grid-template-columns:1fr}
  .dl-grid,.trust-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .sitemap-cols{grid-template-columns:1fr}
  .news-card{flex-direction:column}
  .news-card .thumb{width:100%;height:160px}
  .article-main{padding:24px}
}