/* =====================================================================
   视频加密销售系统 — WordPress 主题 ve-encrypt
   Design system: 旧官网风格 (Ant Design 蓝 / 浅色 / 紫蓝渐变)
   ===================================================================== */

/* ---------- Reset & tokens ---------- */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#1890ff;
  --primary-hover:#40a9ff;
  --gradient:linear-gradient(135deg,#667eea 0%,#764ba2 100%);
  --gradient-warm:linear-gradient(135deg,#f43f5e 0%,#f59e0b 100%);
  --gradient-cool:linear-gradient(135deg,#1890ff 0%,#06b6d4 100%);
  --gradient-soft:linear-gradient(135deg,rgba(24,144,255,.12),rgba(6,182,212,.12));

  --cyan:#06b6d4;
  --emerald:#10b981;
  --amber:#f59e0b;
  --rose:#f43f5e;
  --green:#52c41a;

  --dark:#001529;
  --bg:#ffffff;
  --bg-soft:#f9f9f9;
  --bg-inner:#f0f2f5;
  --surface:#ffffff;

  --text:#333333;
  --text-muted:#666666;
  --text-light:#999999;
  --border:#e8e8e8;

  --radius:12px;
  --radius-sm:8px;
  --shadow-card:0 5px 20px rgba(0,0,0,0.05);
  --shadow-card-hover:0 10px 30px rgba(0,0,0,0.1);

  --maxw:1200px;
  --nav-h:70px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","PingFang SC","Microsoft YaHei",sans-serif;
}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
h1,h2,h3,h4{line-height:1.25;font-weight:800;letter-spacing:-.01em}
p{color:var(--text-muted)}

.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:100px 0}
.section--tight{padding:64px 0}
.text-center{text-align:center}

/* ---------- Buttons ---------- */
.btn{
  display:inline-block;padding:12px 30px;border-radius:6px;font-weight:600;font-size:16px;
  cursor:pointer;border:2px solid transparent;transition:all .3s;white-space:nowrap;text-align:center;
}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-ghost:hover{background:var(--primary);color:#fff}

/* ---------- Navbar ---------- */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-h);
  display:flex;align-items:center;
  background:#fff;box-shadow:0 2px 10px rgba(0,0,0,0.1);transition:.3s;
}
.navbar.is-scrolled{box-shadow:0 2px 16px rgba(0,0,0,0.12)}
.navbar .container{display:flex;align-items:center;justify-content:space-between;width:100%}
.brand{display:flex;align-items:center;gap:10px;font-weight:bold;font-size:20px;color:var(--text);text-decoration:none}
.brand .logo-icon{font-size:28px;line-height:1}
.nav-links{display:flex;align-items:center;gap:30px;list-style:none}
.nav-links a{font-weight:500;color:var(--text-muted);font-size:15px;position:relative;transition:.2s;padding:5px 0}
.nav-links a:hover,.nav-links a.active{color:var(--primary)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;width:42px;height:42px;font-size:24px;color:var(--text)}
.nav-cta{display:flex;align-items:center;gap:14px}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:calc(var(--nav-h) + 80px) 0 100px;
  background:var(--gradient);color:#fff;overflow:hidden;
}
.hero .container{display:flex;align-items:center;gap:60px;position:relative;z-index:2}
.hero-content{flex:1}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.18);font-size:13px;color:rgba(255,255,255,.9);margin-bottom:26px;
}
.hero-tag b{color:#fff;font-weight:600}
.hero h1{font-size:clamp(34px,4.6vw,48px);color:#fff;margin-bottom:20px;line-height:1.2;letter-spacing:-.01em}
.hero p.lead{font-size:20px;color:rgba(255,255,255,.92);max-width:540px;margin:0 0 40px}
.hero-actions{display:flex;gap:20px;flex-wrap:wrap}
.hero-actions .btn-primary{background:#fff;color:#667eea;border-color:#fff}
.hero-actions .btn-primary:hover{background:#f0f0f0;color:#5a5ad6}
.hero-actions .btn-outline{border-color:#fff;color:#fff}
.hero-actions .btn-outline:hover{background:#fff;color:#667eea}
.hero-meta{margin-top:42px;display:flex;gap:26px;flex-wrap:wrap;color:rgba(255,255,255,.85);font-size:14px}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta i{color:#fff;font-style:normal}
.hero-image{flex:1}

/* Hero mockup (真实产品截图) */
.hero-mockup{
  background:#fff;border-radius:var(--radius);overflow:hidden;
  box-shadow:0 25px 70px rgba(0,0,0,.35);color:var(--text);
}
.hero-mockup--img{padding:0;background:transparent}
.hero-mockup--img img{display:block;width:100%;height:auto;border-radius:var(--radius);box-shadow:0 25px 70px rgba(0,0,0,.35)}

/* ========== INNER PAGE HERO (page-hero.php) ========== */
.page-hero{
  position:relative;padding:calc(var(--nav-h) + 70px) 0 80px;overflow:hidden;
  background:linear-gradient(135deg,#f0f0ff 0%,#e8f4fc 40%,#f0faf8 100%);
}
.page-hero--dark{background:var(--gradient);color:#fff}
.page-hero .container{position:relative;z-index:2}
.page-hero .ph-breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-muted);margin-bottom:20px;flex-wrap:wrap}
.page-hero .ph-breadcrumb a{color:var(--primary);font-weight:500;transition:.2s}
.page-hero .ph-breadcrumb a:hover{text-decoration:underline}
.page-hero .ph-breadcrumb .sep{opacity:.4}
.page-hero h1{font-size:clamp(32px,4.8vw,52px);color:var(--text);letter-spacing:-.02em;margin-bottom:14px}
.page-hero--dark h1{color:#fff}
.page-hero .ph-desc{font-size:clamp(16px,1.8vw,19px);color:var(--text-muted);max-width:640px;line-height:1.65}
.page-hero--dark .ph-desc{color:rgba(255,255,255,.9)}
.page-hero .ph-tags{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}
.page-hero .ph-tag{padding:5px 14px;border-radius:999px;font-size:13px;font-weight:600;background:rgba(24,144,255,.1);color:var(--primary)}
.page-hero--dark .ph-tag{background:rgba(255,255,255,.15);color:#fff}

/* ---------- Stats band ---------- */
.stats{position:relative;z-index:3;margin-top:-58px}
.stats .card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-card);padding:40px 26px;text-align:center;
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
}
.stat .num{font-size:clamp(30px,4vw,44px);font-weight:800;color:var(--primary)}
.stat .label{color:var(--text-muted);font-size:15px;margin-top:6px}

/* ---------- Section heading ---------- */
.sec-head,.section-header{text-align:center;max-width:760px;margin:0 auto 60px}
.sec-head .eyebrow,.section-header .eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--primary);margin-bottom:12px;
}
.sec-head h2,.section-header h2{font-size:clamp(28px,3.6vw,36px);color:var(--text);margin-bottom:15px}
.sec-head p,.section-header p{font-size:18px;color:var(--text-muted)}
#features-market{background:var(--bg-soft)}

/* ---------- Features grid ---------- */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.feature{
  background:var(--surface);padding:40px 30px;border-radius:var(--radius);
  box-shadow:var(--shadow-card);transition:transform .3s,box-shadow .3s;position:relative;overflow:hidden;
}
.feature:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover)}
.feature .ic{font-size:46px;margin-bottom:20px;line-height:1}
.feature h3{font-size:22px;margin-bottom:15px;color:var(--text)}
.feature p{font-size:15px;line-height:1.8}

/* ---------- How it works ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;counter-reset:step}
.step{position:relative;padding:34px 28px;border-radius:var(--radius);background:var(--bg-soft);border:1px solid var(--border)}
.step .n{counter-increment:step;font-size:15px;font-weight:800;color:#fff;width:42px;height:42px;border-radius:12px;background:var(--primary);display:grid;place-items:center;margin-bottom:18px}
.step .n::before{content:counter(step)}
.step h3{font-size:18px;margin-bottom:8px;color:var(--text)}
.step p{font-size:15px}

/* ---------- Showcase ---------- */
.showcase-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}
.show{background:var(--surface);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-card);transition:transform .3s,box-shadow .3s}
.show:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover)}
.show .thumb{aspect-ratio:16/10;background:var(--gradient);display:grid;place-items:center;position:relative;overflow:hidden}
.show .thumb img{max-width:100%;max-height:100%;width:auto;height:auto;display:block;transition:transform .4s}
.show:hover .thumb img{transform:scale(1.04)}
/* 桌面/后台截图：铺满 16:10 卡片 */
.show .thumb--desktop img{width:100%;height:100%;object-fit:cover}
/* 移动端截图：保持与桌面/后台同 16:10 高度，三卡齐平；用 object-position: center 居中显示手机 */
.show .thumb--mobile{background:linear-gradient(160deg,#f4f5fb 0%,#e8eaf6 100%);padding:18px 14px;align-items:stretch;justify-items:center}
.show .thumb--mobile img{width:auto;height:100%;max-width:90%;object-fit:contain;object-position:center;border-radius:18px;box-shadow:0 18px 40px rgba(102,126,234,.35),0 4px 12px rgba(0,0,0,.15);border:3px solid #1a1a1a;border-bottom-width:5px;background:#fff}
.show .body{padding:20px 22px}
.show .body h4{color:var(--text);font-size:17px;margin-bottom:6px}
.show .body p{color:var(--text-muted);font-size:14px}

/* ---------- Pricing ---------- */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:34px 30px;display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s;position:relative;
}
.plan:hover{transform:translateY(-6px);box-shadow:var(--shadow-card-hover)}
.plan.is-popular{background:#fff;border:2px solid var(--primary);box-shadow:0 12px 34px rgba(24,144,255,.18)}
.plan .badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--primary);color:#fff;font-size:12px;font-weight:700;padding:5px 16px;border-radius:999px}
.plan h3{font-size:20px;margin-bottom:6px;color:var(--text)}
.plan .desc{font-size:14px;margin-bottom:18px;min-height:42px}
.plan .price{font-size:40px;font-weight:800;margin-bottom:4px;color:var(--text)}
.plan .price small{font-size:15px;font-weight:600;color:var(--text-muted)}
.plan-feat{margin:22px 0 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.plan-feat li{display:flex;gap:10px;font-size:15px;align-items:flex-start;color:var(--text-muted)}
.plan-feat li i{color:var(--green);font-style:normal;margin-top:3px}
.plan .btn{width:100%;justify-content:center}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:.2s}
.faq-item.open{box-shadow:var(--shadow-card)}
.faq-q{width:100%;text-align:left;background:none;border:0;cursor:pointer;padding:20px 24px;font-size:17px;font-weight:600;color:var(--text);display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-q .plus{font-size:22px;color:var(--primary);transition:transform .25s;flex:none}
.faq-item.open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 24px 22px;font-size:15px}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--gradient);color:#fff;border-radius:24px;padding:64px 40px;text-align:center;
  position:relative;overflow:hidden;
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(26px,3.4vw,38px);color:#fff;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.92);font-size:17px;margin-bottom:30px}
.cta-band .btn-ghost{background:transparent;border:2px solid #fff;color:#fff}
.cta-band .btn-ghost:hover{background:#fff;color:#667eea}
.cta-band .hero-actions{justify-content:center}
.cta-band .cta-wechat{
  margin-top:22px;color:#fff;font-size:15px;opacity:.92;
  opacity:0;visibility:hidden;transform:translateY(-4px);
  transition:opacity .25s ease, transform .25s ease, visibility 0s linear .25s;
}
.cta-band .hero-actions:hover ~ .cta-wechat,
.cta-band .cta-wechat:hover{
  opacity:1;visibility:visible;transform:translateY(0);
  transition:opacity .25s ease, transform .25s ease, visibility 0s;
}
.cta-band .cta-wechat::before{content:"\1F4AC";margin-right:6px;font-size:16px;vertical-align:middle}

/* ---------- Contact ---------- */
.contact-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:40px}
.contact-info{background:var(--dark);color:#fff;border-radius:var(--radius);padding:40px 36px}
.contact-info h3{color:#fff;font-size:22px;margin-bottom:14px}
.contact-info .ci-item{display:flex;gap:14px;margin-top:22px;align-items:flex-start}
.contact-info .ci-item .ic{width:42px;height:42px;border-radius:11px;background:rgba(255,255,255,.08);display:grid;place-items:center;font-size:19px;flex:none}
.contact-info .ci-item div span{display:block;color:rgba(255,255,255,.65);font-size:13px}
.contact-info .ci-item div b{color:#fff;font-weight:600;font-size:15px}
.form-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:36px 34px;box-shadow:var(--shadow-card)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--text)}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);
  font-size:15px;font-family:inherit;color:var(--text);background:#fff;transition:.2s;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(24,144,255,.15)}
.field textarea{resize:vertical;min-height:120px}
.form-note{font-size:13px;color:var(--text-muted);margin-top:10px}
.form-ok{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0;padding:12px 16px;border-radius:var(--radius-sm);font-size:14px;margin-bottom:16px;display:none}
.form-ok.show{display:block}

/* ================================================================
   营销推广高亮 / 安全保障 / 支付对接 / 客户案例 (旧官网风格板块)
   ================================================================ */
/* 营销推广高亮 */
.marketing-highlight{background:#fff}
.marketing-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px;margin-bottom:50px}
.marketing-feature-card{background:var(--bg-soft);padding:40px 30px;border-radius:var(--radius);transition:transform .3s}
.marketing-feature-card:hover{transform:translateY(-5px)}
.marketing-icon{font-size:48px;margin-bottom:20px;line-height:1}
.marketing-feature-card h3{font-size:22px;margin-bottom:15px;color:var(--text)}
.marketing-feature-card p{color:var(--text-muted);margin-bottom:20px}
.marketing-feature-card ul{list-style:none}
.marketing-feature-card li{padding:8px 0;color:var(--text-muted);padding-left:22px;position:relative}
.marketing-feature-card li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:bold}
.marketing-cta{text-align:center}

/* 安全保障 */
.security-section{background:var(--bg-soft)}
.security-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px}
.security-item{background:#fff;padding:40px 30px;border-radius:var(--radius);text-align:center;box-shadow:var(--shadow-card);transition:transform .3s,box-shadow .3s}
.security-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover)}
.security-icon{font-size:48px;margin-bottom:20px;line-height:1}
.security-item h3{font-size:20px;margin-bottom:15px;color:var(--text)}
.security-item p{color:var(--text-muted)}

/* 支付对接 */
.payment-section{background:#fff}
.payment-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}
.payment-item{background:var(--bg-soft);padding:40px 30px;border-radius:var(--radius);text-align:center;transition:transform .3s,box-shadow .3s}
.payment-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover)}
.payment-logo{font-size:24px;font-weight:bold;color:var(--text);margin-bottom:15px}
.payment-item p{color:var(--text-muted)}

/* 客户案例 */
.cases-section{background:var(--bg-soft)}
.cases-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}
.case-card{background:#fff;padding:40px 30px;border-radius:var(--radius);box-shadow:var(--shadow-card);transition:transform .3s,box-shadow .3s}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover)}
.case-content{margin-bottom:20px;color:var(--text-muted);line-height:1.8;font-style:italic}
.case-author{display:flex;align-items:center;gap:15px}
.case-avatar{width:50px;height:50px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:bold;font-size:20px;flex:none}
.case-name{font-weight:bold;color:var(--text)}
.case-role{font-size:14px;color:var(--text-light)}

/* ================================================================
   ENHANCED DOCS / ARTICLE / INNER PAGE STYLES
   ================================================================ */
.docs-layout{display:grid;grid-template-columns:240px 1fr;gap:40px;align-items:start}
.docs-sidebar{position:sticky;top:calc(var(--nav-h) + 24px)}
.ds-title{font-size:14px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-bottom:16px}
.ds-nav{display:flex;flex-direction:column;gap:4px}
.ds-nav a{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:10px;font-size:14px;font-weight:500;color:var(--text-muted);transition:.2s}
.ds-nav a:hover,.ds-nav a.active{background:var(--gradient-soft);color:var(--primary)}
.ds-nav a .ds-icon{width:32px;height:32px;border-radius:8px;display:grid;place-items:center;font-size:16px;flex:none;background:var(--bg-soft)}

.doc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.doc-card{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:0;overflow:hidden;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column}
.doc-card:hover{transform:translateY(-8px);box-shadow:0 24px 60px rgba(15,23,42,.12);border-color:transparent}
.doc-card::before{content:"";height:4px;width:100%;background:var(--gradient);transition:.3s}
.doc-card:hover::before{height:6px}
.doc-card__header{padding:24px 24px 16px;display:flex;align-items:flex-start;gap:16px}
.doc-card__icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;flex:none;font-size:24px;transition:.3s;background:var(--gradient);color:#fff;box-shadow:0 8px 24px rgba(102,118,234,.25)}
.doc-card:hover .doc-card__icon{transform:scale(1.08) rotate(-3deg)}
.doc-card[data-cat="troubleshoot"] .doc-card__icon,.doc-card[data-cat="faq"] .doc-card__icon{background:var(--gradient-warm);box-shadow:0 8px 24px rgba(244,63,94,.25)}
.doc-card[data-cat="payment"] .doc-card__icon,.doc-card[data-cat="pricing"] .doc-card__icon{background:var(--gradient-cool);box-shadow:0 8px 24px rgba(6,182,212,.25)}
.doc-card__body{padding:0 24px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.doc-card__title{font-size:17px;font-weight:700;color:var(--text);line-height:1.35}
.doc-card__excerpt{font-size:14px;color:var(--text-muted);line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.doc-card__footer{padding:14px 24px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;margin-top:auto}
.doc-card__cat{font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;background:rgba(24,144,255,.08);color:var(--primary)}
.doc-card__read-more{font-size:13px;font-weight:600;color:var(--primary);display:flex;align-items:center;gap:4px;white-space:nowrap}
.doc-card__read-more svg{width:14px;height:14px;flex:none;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.doc-card__read-more:hover{gap:8px}

.article{min-height:calc(100vh - var(--nav-h) - 200px)}
.article-inner{max-width:860px;margin:0 auto}
.article-header{margin-bottom:48px;padding-bottom:32px;border-bottom:1px solid var(--border)}
.article-header .breadcrumb{font-size:14px;color:var(--text-muted);margin-bottom:18px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.article-header .breadcrumb a{color:var(--primary);font-weight:500}
.article-header .breadcrumb a:hover{text-decoration:underline}
.article-header .breadcrumb .sep{opacity:.35}
.article-header h1{font-size:clamp(28px,4.5vw,46px);color:var(--text);letter-spacing:-.015em;margin-bottom:14px}
.article-header .ah-meta{display:flex;align-items:center;gap:18px;flex-wrap:wrap;font-size:14px;color:var(--text-muted)}
.article-header .ah-meta .ah-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;background:rgba(24,144,255,.08);color:var(--primary)}

.doc-content{font-size:16.5px;line-height:1.82;color:var(--text-muted)}
.doc-content > * + *{margin-top:1.3em}
.doc-content h2{font-size:24px;font-weight:800;color:var(--text);margin-top:2em;margin-bottom:.7em;padding-bottom:10px;border-bottom:2px solid rgba(24,144,255,.1)}
.doc-content h3{font-size:20px;font-weight:700;color:var(--text);margin-top:1.6em;margin-bottom:.5em}
.doc-content h4{font-size:17px;font-weight:700;color:var(--text);margin-top:1.3em;margin-bottom:.4em}
.doc-content p{line-height:1.82;margin-bottom:1em}
.doc-content ul,.doc-content ol{padding-left:1.4em;margin:1em 0;list-style:unset}
.doc-content ul li{position:relative;padding-left:8px;margin-bottom:8px;line-height:1.75}
.doc-content ul li::marker{color:var(--primary);font-weight:900}
.doc-content ol li{margin-bottom:8px;line-height:1.75}
.doc-content strong{color:var(--text);font-weight:700}
.doc-content em{color:var(--primary);font-style:normal;font-weight:600}
.doc-content code{font-family:"SF Mono",SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:.88em;padding:2px 7px;border-radius:6px;background:rgba(24,144,255,.07);color:var(--primary)}
.doc-content pre{background:var(--dark);color:#e2e8f0;padding:22px 24px;border-radius:var(--radius);overflow-x:auto;font-size:14px;line-height:1.65;margin:1.6em 0}
.doc-content pre code{background:none;color:inherit;padding:0;font-size:inherit;border-radius:0}
.doc-content blockquote{border-left:4px solid var(--primary);background:var(--gradient-soft);padding:18px 22px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:1.6em 0;font-style:italic;color:var(--text-muted)}
.doc-content table{width:100%;border-collapse:collapse;margin:1.6em 0;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}
.doc-content thead{background:var(--bg-soft)}
.doc-content th,.doc-content td{padding:12px 16px;text-align:left;font-size:14px;border-bottom:1px solid var(--border)}
.doc-content th{font-weight:700;color:var(--text)}
.doc-content tr:last-child td{border-bottom:none}
.doc-content img{border-radius:var(--radius-sm);margin:1.6em 0;box-shadow:var(--shadow-card)}
.doc-content a{color:var(--primary);font-weight:500;border-bottom:1px solid transparent;transition:border-color .2s}
.doc-content a:hover{border-color:var(--primary)}

.article-footer{margin-top:56px;padding-top:28px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
.af-back{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:var(--radius-sm);border:1px solid var(--border);font-weight:600;font-size:14px;color:var(--text);transition:.2s}
.af-back:hover{border-color:var(--primary);color:var(--primary);background:rgba(24,144,255,.03)}
.af-share{display:flex;gap:8px}
.af-share a{width:38px;height:38px;border-radius:10px;background:var(--bg-soft);display:grid;place-items:center;font-size:16px;color:var(--text-muted);transition:.2s}
.af-share a:hover{background:var(--primary);color:#fff}

.related-docs{margin-top:60px;padding-top:40px;border-top:1px solid var(--border)}
.related-docs h3{font-size:20px;margin-bottom:20px;color:var(--text)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.related-card{padding:18px 20px;border-radius:var(--radius-sm);border:1px solid var(--border);transition:.2s;display:flex;flex-direction:column;gap:8px}
.related-card:hover{border-color:var(--primary);background:rgba(24,144,255,.02)}
.related-card h4{font-size:15px;color:var(--text)}
.related-card p{font-size:13px;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;display:-webkit-box}

.page-body{max-width:820px;margin:0 auto}
.page-body > .content{font-size:17px;line-height:1.8;color:var(--text-muted)}
.page-body > .content h2{font-size:26px;color:var(--text);margin:1.4em 0 .6em}
.page-body > .content h3{font-size:21px;color:var(--text);margin:1.2em 0 .5em}
.page-body > .content ul,.page-body > .content ol{padding-left:1.5em;margin:1em 0}
.page-body > .content li{margin-bottom:8px}
.page-body > .content strong{color:var(--text)}
.page-body > .content img{border-radius:var(--radius-sm);box-shadow:var(--shadow-card);margin:1.5em 0}
.page-body > .content blockquote{border-left:4px solid var(--primary);background:var(--gradient-soft);padding:18px 22px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:1.5em 0}
/* 文档中心列表页：放宽 .page-body 宽度以容纳 3 列卡片网格 */
.page-body:has(.doc-grid){max-width:1140px}

/* ---------- Footer ---------- */
.footer{background:var(--dark);color:rgba(255,255,255,.65);padding:64px 0 30px}
.footer .grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer .brand{color:#fff;margin-bottom:16px;font-size:20px;font-weight:bold;display:flex;align-items:center;gap:10px}
.footer .brand .logo-icon{font-size:26px}
.footer p.about{font-size:14px;max-width:320px}
.footer h5{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.footer ul{list-style:none}
.footer ul li{margin-bottom:11px}
.footer ul li a{font-size:14px;color:rgba(255,255,255,.65);transition:.2s}
.footer ul li a:hover{color:#fff}
.footer .social{display:flex;gap:12px;margin-top:18px}
.footer .social a{width:40px;height:40px;border-radius:11px;background:rgba(255,255,255,.08);display:grid;place-items:center;font-size:18px;color:#fff;transition:.2s}
.footer .social a:hover{background:var(--primary)}
.footer .bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:44px;padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.45)}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .features-grid,.steps,.showcase-grid,.doc-grid,.pricing-grid{grid-template-columns:repeat(2,1fr)}
  .contact-wrap{grid-template-columns:1fr}
  .docs-layout{grid-template-columns:1fr}
  .docs-sidebar{display:none}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer .grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .navbar.open .nav-links{
    display:flex;flex-direction:column;position:absolute;top:var(--nav-h);left:0;right:0;
    background:#fff;padding:18px 22px;gap:16px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-card);
  }
  .navbar.open .nav-links a{color:var(--text-muted)}
  .hero .container{flex-direction:column;gap:40px}
  .hero{padding-top:calc(var(--nav-h) + 60px)}
  .hero-actions,.hero-meta{flex-direction:column;align-items:flex-start}
  .stats .card{grid-template-columns:repeat(3,1fr);gap:24px}
  .section{padding:70px 0}
  .features-grid,.steps,.showcase-grid,.doc-grid,.pricing-grid{grid-template-columns:1fr}
  .footer .grid{grid-template-columns:1fr}
  .page-hero{padding-top:calc(var(--nav-h) + 50px);padding-bottom:56px}
  .related-grid{grid-template-columns:1fr}
  .doc-card__footer{flex-direction:column;align-items:flex-start;gap:8px}
}

/* ---------- Blog / index fallback ---------- */
.blog-list{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;margin-top:36px}
.blog-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-card);transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.blog-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(15,23,42,.12)}
.blog-card img{width:100%;height:200px;object-fit:cover;display:block}
.blog-card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.blog-card__title{font-size:20px;line-height:1.4}
.blog-card__title a{color:var(--text);text-decoration:none}
.blog-card__title a:hover{color:var(--primary)}
.blog-card__meta{font-size:13px;color:var(--text-muted)}
.blog-card__excerpt{color:var(--text-muted);line-height:1.7;flex:1}
.empty-state{color:var(--text-muted);padding:40px 0;text-align:center}
.pagination{margin-top:40px;display:flex;gap:8px;justify-content:center}
.pagination a,.pagination span{padding:8px 14px;border:1px solid var(--border);border-radius:8px;color:var(--text);text-decoration:none}
.pagination .current{background:var(--primary);color:#fff;border-color:var(--primary)}
@media (max-width:768px){.blog-list{grid-template-columns:1fr}}

/* ---------- Hover tooltip (data-tooltip) ---------- */
.tip{position:relative;cursor:pointer}
.tip:hover::after,.tip:focus::after{
  content:attr(data-tooltip);
  position:absolute;
  bottom:calc(100% + 10px);
  left:50%;
  transform:translateX(-50%);
  background:#0f172a;
  color:#fff;
  padding:10px 14px;
  border-radius:10px;
  font-size:13px;
  font-weight:400;
  line-height:1.55;
  white-space:pre-line;
  max-width:280px;
  width:max-content;
  text-align:left;
  box-shadow:0 8px 24px rgba(15,23,42,.25);
  z-index:9999;
  pointer-events:none;
  animation:tipFade .15s ease-out;
}
.tip:hover::before,.tip:focus::before{
  content:"";
  position:absolute;
  bottom:calc(100% + 5px);
  left:50%;
  transform:translateX(-50%);
  border:6px solid transparent;
  border-top-color:#0f172a;
  z-index:9999;
  pointer-events:none;
}
@keyframes tipFade{from{opacity:0;transform:translate(-50%,4px)}to{opacity:1;transform:translate(-50%,0)}}
.plan .tip:hover::after{bottom:calc(100% + 14px)}
.plan .tip:hover::before{bottom:calc(100% + 9px)}
.footer .tip{overflow:visible}

/* ================================================================
   DETAILED FEATURES (ported from features.html) — homepage
   ================================================================ */
.fd-section{background:#fff}
.fd-section .sec-head{margin-bottom:52px}
.fd-list-wrap{display:flex;flex-direction:column}
.fd-block{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
  padding:52px 0;border-top:1px solid var(--border);
}
.fd-block:first-child{border-top:none}
.fd-block.reverse .fd-content{order:2}
.fd-block.reverse .fd-visual{order:1}
.fd-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:84px;height:84px;border-radius:22px;font-size:42px;line-height:1;
  background:var(--gradient-soft);box-shadow:var(--shadow-card);margin-bottom:20px;
}
.fd-content h3{font-size:clamp(24px,2.6vw,30px);color:var(--text);margin-bottom:14px;font-weight:700}
.fd-content>p{font-size:16px;line-height:1.8;color:var(--text-muted);margin-bottom:22px}
.fd-list{list-style:none;display:grid;gap:13px}
.fd-list li{position:relative;padding-left:32px;font-size:15px;line-height:1.55;color:var(--text)}
.fd-list li::before{
  content:"";position:absolute;left:0;top:3px;width:20px;height:20px;border-radius:50%;
  background:var(--gradient-cool);
}
.fd-list li::after{
  content:"✓";position:absolute;left:0;top:3px;width:20px;height:20px;
  display:grid;place-items:center;color:#fff;font-size:12px;font-weight:800;
}
.fd-visual{position:relative}
.fd-mock{
  background:var(--surface);border:1px solid var(--border);border-radius:18px;
  padding:24px;box-shadow:var(--shadow-card);overflow:hidden;
}
.fd-mock__title{
  font-size:13px;font-weight:700;color:var(--text-muted);
  text-transform:uppercase;letter-spacing:.06em;margin-bottom:16px;
}
/* encrypt mock */
.enc-file{display:flex;justify-content:space-between;align-items:center;
  padding:12px 14px;background:var(--bg-soft);border-radius:10px;margin-bottom:10px;font-size:14px}
.enc-badge{font-size:12px;font-weight:600;padding:3px 10px;border-radius:20px;white-space:nowrap}
.enc-badge.ok{background:rgba(82,196,26,.12);color:#52c41a}
.enc-badge.warn{background:rgba(250,173,20,.14);color:#fa8c16}
.enc-badge.wait{background:rgba(153,153,153,.14);color:#999}
.enc-progress{height:8px;background:var(--bg-soft);border-radius:6px;overflow:hidden;margin-top:6px}
.enc-bar{height:100%;background:var(--gradient-cool);border-radius:6px}
.enc-pct{font-size:12px;color:var(--text-muted);margin-top:8px;text-align:right}
/* player mock */
.pl-screen{aspect-ratio:16/9;background:linear-gradient(135deg,#1e293b,#0f172a);
  border-radius:12px;display:grid;place-items:center;margin-bottom:14px}
.pl-play{width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,.16);
  display:grid;place-items:center;color:#fff;font-size:22px}
.pl-controls{display:flex;justify-content:space-between;align-items:center;padding:0 6px;color:var(--text-muted);font-size:18px}
.pl-main{width:42px;height:42px;border-radius:50%;background:var(--primary);color:#fff;
  display:grid;place-items:center;font-size:16px}
/* payment + device table */
.mini-table{width:100%;border-collapse:collapse;font-size:13px}
.mini-table th{text-align:left;color:var(--text-light);font-weight:600;
  padding:8px 10px;border-bottom:1px solid var(--border)}
.mini-table td{padding:9px 10px;border-bottom:1px solid var(--border);color:var(--text)}
.mini-table tr:last-child td{border-bottom:none}
.dot{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:13px}
.dot::before{content:"";width:8px;height:8px;border-radius:50%}
.dot.ok{color:#52c41a}.dot.ok::before{background:#52c41a}
.dot.warn{color:#fa8c16}.dot.warn::before{background:#fa8c16}
/* payment stats */
.pay-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.pay-stat{background:var(--bg-soft);border-radius:12px;padding:16px;text-align:center}
.pay-stat b{display:block;font-size:22px;color:var(--primary);font-weight:800}
.pay-stat span{font-size:12px;color:var(--text-muted)}
/* marketing */
.mkt-chart{background:var(--gradient);color:#fff;border-radius:12px;padding:30px 20px;
  text-align:center;font-size:16px;font-weight:600;margin-bottom:14px}
.mkt-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.mkt-stat{background:var(--bg-soft);border-radius:10px;padding:14px 8px;text-align:center}
.mkt-stat b{display:block;font-size:15px;color:var(--text);font-weight:700}
.mkt-stat span{font-size:11px;color:var(--text-muted)}
/* multiplatform */
.plat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:14px}
.plat{background:var(--bg-soft);border-radius:14px;padding:22px 10px;text-align:center}
.plat-ic{font-size:30px;display:block;margin-bottom:8px}
.plat b{display:block;font-size:15px;color:var(--text)}
.plat small{font-size:12px;color:var(--text-muted)}
.plat-note{font-size:13px;color:var(--text-muted);text-align:center;margin:0}
/* device note */
.dev-note{margin-top:14px;font-size:13px;color:var(--text-muted);
  background:var(--bg-soft);border-radius:10px;padding:12px 14px;text-align:center}
/* responsive */
@media (max-width:860px){
  .fd-block{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .fd-block.reverse .fd-content{order:1}
  .fd-block.reverse .fd-visual{order:2}
}

/* detailed-features: real image mockup variant (block 1) */
.fd-mock--img{padding:0;overflow:hidden}
.fd-mock--img img{display:block;width:100%;height:auto;border-radius:18px}