/* ==========================================================================
   AI 客服平台 · 企业开通页（provision）
   Wave 2 视觉层：12 章节长滚动落地页 + 业务组件契约（app.js / effects.js 发射的 class 全部保留）
   设计语言：白色企业级 · Apple 风格留白 · 单一强调色 --accent + --accent-2
   ========================================================================== */

* { margin:0; padding:0; box-sizing:border-box; }

:root{
  /* ---------- 白色企业主题 token ---------- */
  --bg:#ffffff;
  --bg-2:#f8fafc;
  --bg-3:#f1f5f9;
  --card:#ffffff;
  --card-strong:#f8fafc;
  --text:#0f172a;
  --text-secondary:#475569;
  --text-muted:#94a3b8;
  --border:rgba(15,23,42,.08);
  --border-strong:rgba(15,23,42,.16);
  --accent:#2563eb;
  --accent-2:#06b6d4;
  --accent-soft:rgba(37,99,235,.08);
  --success:#16a34a;
  --warning:#d97706;
  --danger:#dc2626;

  /* ---------- 别名（契约要求补齐） ---------- */
  --primary:var(--accent);
  --primary-soft:var(--accent-soft);
  --danger-soft:rgba(220,38,38,.1);
  --navy-900:#0a0a0c;

  /* ---------- 章节环境背景（每章独立） ---------- */
  --chapter-pain-bg:linear-gradient(180deg,#f7f8fb 0%,#eef0f6 100%);
  --chapter-solution-bg:linear-gradient(180deg,#f4f8ff 0%,#eaf1ff 100%);
  --chapter-showcase-bg:linear-gradient(180deg,#ffffff 0%,#f8fafc 100%);
  --chapter-data-bg:linear-gradient(135deg,#f8fafc 0%,#eef4ff 55%,#f6fafb 100%);
  --chapter-testimonial-bg:linear-gradient(180deg,#fbf8ff 0%,#eef1ff 100%);
  --chapter-team-bg:linear-gradient(180deg,#f8fafc 0%,#f1f5f9 100%);
  --chapter-cta-bg:linear-gradient(135deg,#eaf1ff 0%,#f4faff 55%,#e8f7f8 100%);

  /* ---------- 组件化背景/着色 token ---------- */
  --hero-glow:rgba(37,99,235,.10);
  --hero-glow-2:rgba(6,182,212,.06);
  --hero-bg-end:#f8fafc;
  --cta-glow:rgba(37,99,235,.16);
  --cta-glow-2:rgba(6,182,212,.08);
  --footer-bg-start:#f8fafc;
  --footer-bg-end:#f1f5f9;
  --modal-overlay:rgba(0,0,0,.7);
  --toast-bg:#f1f5f9;
  --topbar-bg:rgba(255,255,255,.85);
  --nav-link:#475569;
  --nav-link-hover:#0f172a;
  --hero-grid:rgba(15,23,42,.045);
  --eyebrow-bg:rgba(37,99,235,.08);
  --eyebrow-border:rgba(37,99,235,.25);
  --eyebrow-pulse:rgba(37,99,235,.22);
  --eyebrow-color:#2563eb;
  --tag-bg:rgba(37,99,235,.08);
  --tag-border:rgba(37,99,235,.25);
  --tag-color:#2563eb;

  /* ---------- 阴影 / 圆角 / 动效 ---------- */
  --card-shadow-sm:0 1px 3px rgba(15,23,42,.06);
  --card-shadow-md:0 8px 24px rgba(15,23,42,.08);
  --card-shadow-lg:0 24px 60px rgba(15,23,42,.14);
  --shadow-sm:0 1px 3px rgba(15,23,42,.06);
  --shadow-md:0 8px 24px rgba(15,23,42,.08);
  --shadow-lg:0 24px 60px rgba(15,23,42,.14);
  --shadow-accent:0 12px 32px rgba(37,99,235,.22);
  --radius:14px;
  --radius-sm:8px;
  --radius-lg:24px;
  --glass-blur:blur(20px);
  --ease-apple:cubic-bezier(0.32, 0.72, 0, 1);
  --mono:"SF Mono","JetBrains Mono",Consolas,"Liberation Mono",Menlo,monospace;
  --container-max:1320px;
  --hero-min-h:min(100vh, 920px);
  --module-min-h:90vh;
  --short-module-min-h:70vh;
}

html { scroll-behavior:smooth; }

body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg); color:var(--text); font-size:17px; line-height:1.55;
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

.module-hero, .module-pain, .module-solution, .module-demo, .module-numbers,
.module-testimonials, .module-team, .module-security, .module-plans, .module-faq,
.module-cta, .footer{ will-change:background-color, color; }

a{ color:inherit; text-decoration:none; cursor:pointer; }
button{ font-family:inherit; }
svg{ vertical-align:middle; }
code, .mono{ font-family:var(--mono); }

/* ==========================================================================
   顶部导航（保持既有风格）
   ========================================================================== */
.topbar{ position:sticky; top:0; z-index:500; background:var(--topbar-bg); backdrop-filter:var(--glass-blur); -webkit-backdrop-filter:var(--glass-blur); border-bottom:1px solid var(--border); transition:background-color .35s var(--ease-apple); }
.topbar-inner{ max-width:var(--container-max); margin:0 auto; padding:14px 32px; display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap; }
.brand{ display:flex; align-items:center; gap:10px; }
.brand-mark{ width:32px; height:32px; border-radius:9px; background:linear-gradient(135deg,var(--accent),var(--accent-2)); display:flex; align-items:center; justify-content:center; font-weight:800; font-size:13px; letter-spacing:.5px; color:#fff; box-shadow:0 4px 14px var(--accent-soft); }
.brand-name{ font-weight:700; font-size:15px; letter-spacing:.3px; }
.topbar-nav{ display:flex; gap:24px; }
.topbar-nav a{ font-size:14px; color:var(--nav-link); transition:color .2s; }
.topbar-nav a:hover{ color:var(--nav-link-hover); }
.topbar-auth{ display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.auth-hello{ font-size:14px; color:var(--text-secondary); }

/* ==========================================================================
   按钮系统（契约：.btn 系列 + .btn-hero 系列 + .btn-sheen + 弹性按压缩放）
   ========================================================================== */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:6px; padding:9px 18px;
  border:1px solid var(--border); border-radius:999px;
  background:transparent; color:var(--text);
  font-size:14px; cursor:pointer; transition:transform .18s var(--ease-apple), background .2s var(--ease-apple), border-color .2s var(--ease-apple), box-shadow .2s var(--ease-apple), color .2s var(--ease-apple);
  text-decoration:none; user-select:none; position:relative; overflow:hidden;
}
.btn:active{ transform:scale(.96); }
.btn-primary{ background:var(--accent); border-color:var(--accent); color:#fff; }
.btn-primary:hover{ background:#1d4ed8; border-color:#1d4ed8; box-shadow:0 8px 24px var(--accent-soft); }
.btn-ghost{ background:transparent; border-color:var(--border); color:var(--text); }
.btn-ghost:hover{ background:var(--card); border-color:var(--border-strong); }
.btn-soft{ background:var(--accent-soft); border-color:transparent; color:var(--accent); }
.btn-soft:hover{ background:rgba(37,99,235,.18); }
.btn-danger{ background:var(--danger); border-color:var(--danger); color:#fff; }
.btn-danger:hover{ background:#b91c1c; border-color:#b91c1c; }
.btn-sm{ padding:7px 14px; font-size:13px; }
.btn-lg{ padding:14px 30px; font-size:15px; font-weight:600; }
.btn-block{ width:100%; }
.btn:disabled{ opacity:.5; cursor:not-allowed; }

/* ---------- 光泽扫过动效（契约：.btn-sheen） ---------- */
.btn-sheen::after{
  content:""; position:absolute; top:0; left:-65%; width:45%; height:100%;
  background:linear-gradient(100deg, transparent, rgba(255,255,255,.45), transparent);
  transform:skewX(-20deg); pointer-events:none;
  transition:left .65s var(--ease-apple);
}
.btn-sheen:hover::after{ left:125%; }

/* ---------- Hero 大按钮（app.js renderHeroCta 发射：.btn-hero / .btn-hero-primary / .btn-hero-ghost） ---------- */
.btn-hero{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:16px 34px; border:1px solid var(--border); border-radius:999px;
  background:var(--card); color:var(--text); font-size:16px; font-weight:600; cursor:pointer;
  transition:transform .18s var(--ease-apple), background .2s var(--ease-apple), border-color .2s var(--ease-apple), box-shadow .2s var(--ease-apple);
  text-decoration:none; user-select:none; position:relative; overflow:hidden;
}
.btn-hero:active{ transform:scale(.96); }
.btn-hero-primary{ background:var(--accent); border-color:var(--accent); color:#fff; box-shadow:0 12px 32px var(--accent-soft); }
.btn-hero-primary:hover{ background:#1d4ed8; border-color:#1d4ed8; box-shadow:0 16px 40px rgba(37,99,235,.28); }
.btn-hero-ghost{ background:transparent; border-color:var(--border); color:var(--text); }
.btn-hero-ghost:hover{ background:var(--card); border-color:var(--border-strong); }
.btn-hero::after{
  content:""; position:absolute; top:0; left:-65%; width:45%; height:100%;
  background:linear-gradient(100deg, transparent, rgba(255,255,255,.4), transparent);
  transform:skewX(-20deg); pointer-events:none; transition:left .65s var(--ease-apple);
}
.btn-hero:hover::after{ left:125%; }
.hero-cta-row{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* ==========================================================================
   Module 通用
   ========================================================================== */
.module{ position:relative; padding:120px 32px; overflow:hidden; }
.module > .container{ position:relative; z-index:1; }
.container{ max-width:var(--container-max); margin:0 auto; padding:0 32px; }
.module-head{ text-align:center; margin-bottom:64px; }
.module-tag{ display:inline-block; padding:6px 16px; border-radius:999px; font-size:12px; font-weight:700; letter-spacing:2px; color:var(--accent); background:var(--accent-soft); border:1px solid rgba(37,99,235,.3); margin-bottom:20px; }
.module-title{ font-size:clamp(36px, 5vw, 64px); font-weight:700; letter-spacing:-.02em; line-height:1.1; color:var(--text); margin-bottom:18px; }
.module-sub{ font-size:18px; color:var(--text-secondary); max-width:680px; margin:0 auto; line-height:1.6; }

/* ---------- 滚动入场（effects.js 加 .in-view） ----------
   2026-08-21 修复：首次打开页面只有 hero 区域 reveal in-view，下方所有 section 永久 opacity:0（必须滚一下才显示）。
   改为默认全部可见 + 立即触发入场动画。已加载时直接加 .in-view（不再等 IO 触发）。*/
[data-reveal]{ opacity:1; transform:none; transition:opacity .8s var(--ease-apple), transform .8s var(--ease-apple); }
[data-reveal].in-view{ opacity:1; transform:none; }

/* ---------- 视差提示（effects.js 处理 translate/opacity，此处仅给浏览器优化提示） ---------- */
.module[data-parallax]{ will-change:opacity; }
.module[data-parallax] > .container{ will-change:transform, opacity; }

/* ==========================================================================
   Chapter 1 · Hero 全屏
   ========================================================================== */
.module-hero{ min-height:var(--hero-min-h); display:flex; flex-direction:column; align-items:center; justify-content:center; padding:140px 32px 80px; overflow:hidden; background:radial-gradient(ellipse at 50% 0%, var(--hero-glow) 0%, var(--hero-glow-2) 30%, transparent 65%), linear-gradient(180deg, var(--bg) 0%, var(--hero-bg-end) 100%); }
.hero-bg-grid{ position:absolute; inset:0; background-image:linear-gradient(var(--hero-grid) 1px, transparent 1px), linear-gradient(90deg, var(--hero-grid) 1px, transparent 1px); background-size:48px 48px; -webkit-mask-image:radial-gradient(ellipse 75% 65% at 50% 35%, #000 20%, transparent 78%); mask-image:radial-gradient(ellipse 75% 65% at 50% 35%, #000 20%, transparent 78%); pointer-events:none; }
.hero-bg-glow{ position:absolute; top:-200px; left:50%; transform:translateX(-50%); width:1200px; height:600px; background:radial-gradient(ellipse, var(--hero-glow) 0%, var(--hero-glow-2) 35%, transparent 70%); filter:blur(40px); pointer-events:none; }
.hero-particles{ position:absolute; inset:0; width:100%; height:100%; pointer-events:none; }
.hero-inner{ position:relative; z-index:2; max-width:1100px; text-align:center; }
.hero-eyebrow{ display:inline-flex; align-items:center; gap:10px; padding:8px 18px; border-radius:999px; font-size:13px; font-weight:600; color:var(--accent); background:var(--eyebrow-bg); border:1px solid var(--eyebrow-border); backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px); }
.hero-eyebrow .dot{ width:8px; height:8px; border-radius:50%; background:var(--accent); box-shadow:0 0 0 4px var(--eyebrow-pulse); animation:pulse 2s ease infinite; }
@keyframes pulse{ 0%,100%{ box-shadow:0 0 0 4px var(--eyebrow-pulse); } 50%{ box-shadow:0 0 0 8px rgba(37,99,235,.05); } }
.hero-title{ font-size:clamp(56px, 9vw, 140px); font-weight:700; letter-spacing:-.03em; line-height:1.05; margin-top:32px; color:var(--text); }
.hero-line{ display:block; }
.hero-line-accent{ background:linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 70%); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; color:transparent; }
.hero-sub{ font-size:20px; color:var(--text-secondary); line-height:1.6; margin-top:24px; max-width:720px; margin-left:auto; margin-right:auto; }
.hero-cta{ margin-top:36px; display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
.hero-welcome{ display:flex; align-items:center; gap:16px; flex-wrap:wrap; background:var(--card); border:1px solid var(--border); border-radius:16px; padding:18px 24px; max-width:680px; margin:0 auto; box-shadow:var(--shadow-sm); }
.hero-welcome-icon{ width:42px; height:42px; border-radius:50%; background:var(--success); color:#fff; display:flex; align-items:center; justify-content:center; font-weight:800; flex-shrink:0; }
.hero-welcome-txt{ display:flex; flex-direction:column; gap:3px; flex:1; text-align:left; }
.hero-welcome-txt strong{ font-size:16px; color:var(--text); }
.hero-welcome-txt span{ font-size:13px; color:var(--text-secondary); }
.hero-welcome .btn-hero{ padding:10px 20px; font-size:14px; }
.hero-trust{ margin-top:36px; display:flex; align-items:center; justify-content:center; gap:14px; flex-wrap:wrap; font-size:14px; color:var(--text-secondary); }
.trust-item{ display:inline-flex; align-items:center; gap:8px; }
.trust-item svg{ width:16px; height:16px; color:var(--accent); }
.trust-sep{ width:1px; height:14px; background:var(--border-strong); }
.hero-scroll-hint{ position:absolute; bottom:32px; left:50%; transform:translateX(-50%); display:flex; flex-direction:column; align-items:center; gap:6px; color:var(--text-muted); font-size:13px; }
.scroll-arrow{ width:32px; height:32px; border-radius:50%; background:var(--card); border:1px solid var(--border); display:flex; align-items:center; justify-content:center; animation:bounceY 1.8s ease infinite; }
.scroll-arrow svg{ width:14px; height:14px; }
@keyframes bounceY{ 0%,100%{ transform:translateY(0); } 50%{ transform:translateY(6px); } }

/* ==========================================================================
   Chapter 2 · 痛点洞察（浅板岩蓝渐变 + 顶部淡化网格）
   ========================================================================== */
.module-pain{ background:var(--chapter-pain-bg); }
.module-pain::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:
    radial-gradient(ellipse 60% 45% at 50% 0%, rgba(37,99,235,.05), transparent 70%),
    linear-gradient(rgba(15,23,42,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,23,42,.025) 1px, transparent 1px);
  background-size:auto, 64px 64px, 64px 64px;
}
.pain-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; max-width:1200px; margin:0 auto; }
.pain-card{ position:relative; background:var(--card); border:1px solid var(--border); border-radius:20px; padding:32px 26px; overflow:hidden; transition:transform .4s var(--ease-apple), border-color .4s var(--ease-apple), box-shadow .4s var(--ease-apple); }
.pain-card::before{ content:""; position:absolute; top:0; left:0; right:0; height:3px; background:linear-gradient(90deg, var(--accent), transparent 80%); opacity:0; transition:opacity .3s; }
.pain-card:hover{ transform:translateY(-6px) scale(1.02); border-color:var(--border-strong); box-shadow:var(--shadow-md); }
.pain-card:hover::before{ opacity:1; }
.pain-icon{ width:54px; height:54px; border-radius:14px; background:var(--accent-soft); border:1px solid rgba(37,99,235,.3); color:var(--accent); display:flex; align-items:center; justify-content:center; margin-bottom:20px; transition:transform .35s var(--ease-apple); }
.pain-card:hover .pain-icon{ transform:scale(1.08) rotate(-3deg); }
.pain-icon svg{ width:26px; height:26px; }
.pain-card h3{ font-size:18px; font-weight:700; color:var(--text); margin-bottom:10px; letter-spacing:-.01em; }
.pain-card p{ font-size:14px; color:var(--text-secondary); line-height:1.7; }

/* ==========================================================================
   Chapter 3 · 解决方案（蓝色渐变底 + 右上辉光）
   ========================================================================== */
.module-solution{ background:var(--chapter-solution-bg); }
.module-solution::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(ellipse 55% 40% at 90% 8%, rgba(37,99,235,.09), transparent 70%),
              radial-gradient(ellipse 45% 35% at 5% 92%, rgba(6,182,212,.07), transparent 70%);
}
.cap-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; max-width:1200px; margin:0 auto; }
.cap-card.cap-wide{ grid-column:1 / -1; display:flex; align-items:stretch; gap:36px; }
.cap-card.cap-wide .cap-col{ flex:1; min-width:0; }
.cap-card.cap-wide .cap-col + .cap-col{ border-left:1px dashed var(--border-strong); padding-left:36px; }
.cap-card{ position:relative; background:var(--card); backdrop-filter:var(--glass-blur); -webkit-backdrop-filter:var(--glass-blur); border:1px solid var(--border); border-radius:20px; padding:36px 30px; transform-style:preserve-3d; overflow:hidden; transition:transform .4s var(--ease-apple), border-color .4s var(--ease-apple), box-shadow .4s var(--ease-apple); }
.cap-card:hover{ transform:translateY(-6px) scale(1.02); border-color:var(--border-strong); box-shadow:var(--shadow-lg); }
.cap-glare{ position:absolute; inset:0; border-radius:20px; background:radial-gradient(circle at var(--mx,50%) var(--my,50%), rgba(37,99,235,.08), transparent 50%); pointer-events:none; opacity:0; transition:opacity .25s; }
.cap-card:hover .cap-glare{ opacity:1; }
.cap-num{ display:inline-block; font-size:14px; font-weight:700; color:var(--accent); letter-spacing:1px; padding:4px 12px; border-radius:999px; background:var(--accent-soft); border:1px solid rgba(37,99,235,.3); margin-bottom:18px; }
.cap-name{ font-size:22px; font-weight:700; color:var(--text); margin-bottom:12px; letter-spacing:-.01em; }
.cap-desc{ font-size:15px; color:var(--text-secondary); line-height:1.7; margin-bottom:20px; }
.cap-meta{ display:flex; gap:6px; flex-wrap:wrap; }
.cap-tag{ font-size:12px; padding:4px 10px; border-radius:6px; background:var(--bg-2); border:1px solid var(--border); color:var(--text-secondary); }

/* ---------- 应用场景 ---------- */
.scenario-subhead{ max-width:1200px; margin:0 auto 26px; padding-top:64px; }
.scenario-subhead h3{ font-size:clamp(24px,3vw,34px); font-weight:700; color:var(--text); letter-spacing:-.01em; margin-bottom:8px; }
.scenario-subhead p{ font-size:15px; color:var(--text-secondary); }
.scenarios-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; max-width:1200px; margin:0 auto; }
.scenario-card{ background:var(--card); backdrop-filter:var(--glass-blur); -webkit-backdrop-filter:var(--glass-blur); border:1px solid var(--border); border-radius:20px; padding:30px 26px; transition:transform .4s var(--ease-apple), border-color .4s var(--ease-apple), box-shadow .4s var(--ease-apple); }
.scenario-card:hover{ transform:translateY(-6px) scale(1.02); border-color:var(--border-strong); box-shadow:var(--shadow-md); }
.scenario-icon{ width:54px; height:54px; border-radius:14px; display:flex; align-items:center; justify-content:center; margin-bottom:20px; }
.scenario-icon svg{ width:28px; height:28px; }
.scenario-card h3{ font-size:20px; font-weight:700; color:var(--text); margin-bottom:10px; letter-spacing:-.01em; }
.scenario-card p{ font-size:14.5px; color:var(--text-secondary); line-height:1.7; margin-bottom:16px; }
.scenario-tags{ list-style:none; padding:0; display:flex; gap:6px; flex-wrap:wrap; margin:0; }
.scenario-tags li{ font-size:12px; padding:4px 10px; border-radius:6px; background:var(--bg-2); border:1px solid var(--border); color:var(--text-secondary); }

/* ==========================================================================
   Chapter 4 · 产品展示（轮播 + 标签页 + 演示窗口，浅色底）
   ========================================================================== */
.module-demo{ background:var(--chapter-showcase-bg); }
.module-demo::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(180deg, transparent 0%, rgba(37,99,235,.04) 100%);
}
.module-demo::after{
  content:""; position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, rgba(37,99,235,.25), transparent);
}

/* ---------- 轮播（effects.js：.active 切态 + track transform） ---------- */
.carousel{ position:relative; max-width:1200px; margin:0 auto 48px; }
.carousel-track{ display:flex; overflow:hidden; border-radius:20px; transition:transform .6s var(--ease-apple); }
.carousel-slide{ flex:0 0 100%; min-width:100%; display:flex; align-items:center; justify-content:center; gap:12px; padding:26px 84px; font-size:clamp(18px,2.4vw,26px); font-weight:700; letter-spacing:-.01em; color:var(--text); background:var(--card); border:1px solid var(--border); box-shadow:var(--shadow-sm); white-space:nowrap; }
.carousel-slide svg{ width:30px; height:30px; color:var(--accent); flex-shrink:0; }
.carousel-arrow{ position:absolute; top:50%; transform:translateY(-50%); width:44px; height:44px; border-radius:50%; border:1px solid var(--border); background:var(--card); color:var(--text-secondary); display:flex; align-items:center; justify-content:center; cursor:pointer; z-index:2; box-shadow:var(--shadow-sm); transition:color .2s, border-color .2s, background .2s, transform .18s var(--ease-apple); }
.carousel-arrow:active{ transform:translateY(-50%) scale(.94); }
.carousel-arrow.prev{ left:12px; }
.carousel-arrow.next{ right:12px; }
.carousel-arrow svg{ width:20px; height:20px; }
.carousel-arrow:hover{ color:var(--accent); border-color:var(--accent); background:var(--accent-soft); }
.carousel-dots{ display:flex; justify-content:center; gap:8px; margin-top:16px; }
.carousel-dot{ width:8px; height:8px; border-radius:999px; background:var(--border-strong); cursor:pointer; transition:all .3s var(--ease-apple); }
.carousel-dot.active{ width:24px; background:var(--accent); }

/* ---------- 标签页（effects.js：.tab-btn/.tab-panel 切 .active） ---------- */
.tabs{ max-width:1200px; margin:0 auto 48px; }
.tab-bar{ display:flex; gap:8px; justify-content:center; flex-wrap:wrap; }
.tab-btn{ padding:10px 22px; border:1px solid var(--border); background:var(--card); color:var(--text-secondary); border-radius:999px; font-size:14px; font-weight:600; cursor:pointer; transition:all .25s var(--ease-apple); }
.tab-btn:hover{ color:var(--text); border-color:var(--border-strong); }
.tab-btn.active{ background:var(--accent); border-color:var(--accent); color:#fff; box-shadow:0 8px 20px var(--accent-soft); }
.tab-panels{ background:var(--card); border:1px solid var(--border); border-radius:20px; padding:30px 32px; box-shadow:var(--shadow-sm); margin-top:20px; }
.tab-panel{ display:none; }
.tab-panel.active{ display:block; animation:tabFade .4s var(--ease-apple); }
@keyframes tabFade{ from{ opacity:0; transform:translateY(8px); } to{ opacity:1; transform:none; } }
.tab-bullets{ list-style:none; padding:0; margin:0 0 20px; display:flex; flex-direction:column; gap:12px; }
.tab-bullets li{ position:relative; padding-left:26px; font-size:15px; color:var(--text-secondary); line-height:1.7; }
.tab-bullets li::before{ content:""; position:absolute; left:2px; top:9px; width:8px; height:8px; border-radius:50%; background:var(--accent); opacity:.85; }

/* ---------- 演示窗口（白色主题契约） ---------- */
.demo-shell{ display:grid; grid-template-columns:minmax(0,1.5fr) minmax(0,1fr); gap:48px; align-items:start; max-width:1200px; margin:0 auto; }
.demo-main-col{ min-width:0; display:flex; flex-direction:column; align-items:center; }
.demo-window{ width:100%; background:var(--bg-3); border:1px solid var(--border); border-radius:20px; overflow:hidden; box-shadow:var(--shadow-lg); display:flex; flex-direction:column; }
.demo-header{ display:flex; align-items:center; gap:14px; padding:18px 22px; background:linear-gradient(135deg,#f5f5f7,#e5e5ea); color:#1d1d1f; border-bottom:1px solid rgba(0,0,0,.06); }
.demo-avatar{ width:42px; height:42px; border-radius:50%; background:linear-gradient(135deg,var(--accent),var(--accent-2)); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:16px; flex-shrink:0; color:#fff; }
.demo-header-text{ flex:1; min-width:0; }
.demo-header-name{ font-size:15px; font-weight:600; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.demo-header-sub{ font-size:12.5px; opacity:.75; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; margin-top:2px; }
.demo-status{ display:inline-flex; align-items:center; gap:6px; font-size:12.5px; color:#30d158; background:rgba(48,209,88,.16); padding:5px 12px; border-radius:999px; flex-shrink:0; }
.demo-online-dot{ width:8px; height:8px; border-radius:50%; background:#30d158; box-shadow:0 0 0 4px rgba(48,209,88,.35); animation:demoPulse 2.4s ease-in-out infinite; }
@keyframes demoPulse{ 0%,100%{ box-shadow:0 0 0 4px rgba(48,209,88,.35); } 50%{ box-shadow:0 0 0 9px rgba(48,209,88,.12); } }
.demo-min{ width:32px; height:32px; border-radius:9px; border:1px solid rgba(15,23,42,.12); background:rgba(15,23,42,.04); color:#1d1d1f; font-size:15px; cursor:pointer; transition:background .2s; }
.demo-min:hover{ background:rgba(15,23,42,.09); }
.demo-window.min .demo-body{ display:none; }
.demo-body{ display:flex; flex-direction:column; }
.demo-messages{ height:440px; overflow-y:auto; padding:22px 20px; display:flex; flex-direction:column; gap:14px; background:radial-gradient(circle at 50% 0%, rgba(0,122,255,.04), transparent 60%), #f7f7f8; scroll-behavior:smooth; transition:background-color .35s var(--ease-apple); }
.demo-messages::-webkit-scrollbar{ width:6px; }
.demo-messages::-webkit-scrollbar-thumb{ background:#cbd5e1; border-radius:3px; }
.demo-messages .msg{ max-width:84%; padding:11px 16px; border-radius:14px; font-size:13.5px; line-height:1.65; word-break:break-word; position:relative; animation:demoMsgIn .3s var(--ease-apple); }
@keyframes demoMsgIn{ from{ opacity:0; transform:translateY(10px); } to{ opacity:1; transform:none; } }
.demo-messages .msg.user{ align-self:flex-end; background:linear-gradient(135deg,#0a84ff,#0066cc); color:#fff; border-bottom-right-radius:5px; box-shadow:0 4px 14px rgba(10,132,255,.28); }
.demo-messages .msg.assistant{ align-self:flex-start; background:#fff; color:#1d1d1f; border:1px solid rgba(0,0,0,.08); border-bottom-left-radius:5px; box-shadow:0 1px 2px rgba(0,0,0,.05); }
.demo-messages .msg.agent{ border-left:3px solid var(--success); }
.demo-messages .msg.agent::before{ content:"人工"; display:inline-block; margin-right:10px; padding:2px 9px; border-radius:999px; background:var(--success); color:#fff; font-size:10.5px; font-weight:700; }
.demo-messages .msg.system{ align-self:center; max-width:90%; text-align:center; font-size:13px; color:var(--text-muted); background:transparent; border:none; box-shadow:none; }
.demo-messages .msg.typing{ display:flex; align-items:center; gap:6px; padding:14px 18px; }
.demo-messages .msg.typing .dot{ width:8px; height:8px; border-radius:50%; background:#94a3b8; animation:demoTyping 1.3s infinite ease-in-out; }
.demo-messages .msg.typing .dot:nth-child(2){ animation-delay:.16s; }
.demo-messages .msg.typing .dot:nth-child(3){ animation-delay:.32s; }
.demo-messages .msg.typing .typing-stage{ font-size:13px; color:var(--text-muted); margin-left:6px; }
@keyframes demoTyping{ 0%,60%,100%{ transform:translateY(0); opacity:.5; } 30%{ transform:translateY(-6px); opacity:1; } }
.demo-cursor{ display:inline-block; width:2px; height:1.05em; margin-left:3px; background:var(--accent); vertical-align:text-bottom; animation:demoBlink 1s steps(2,start) infinite; }
@keyframes demoBlink{ 0%,100%{ opacity:1; } 50%{ opacity:0; } }
.demo-messages .msg strong{ font-weight:600; }
.demo-messages .msg em{ font-style:italic; }
.demo-messages .msg a{ color:var(--accent); text-decoration:underline; }
.demo-messages .msg code{ font-family:var(--mono); font-size:12px; background:rgba(15,23,42,.06); border:1px solid rgba(15,23,42,.1); border-radius:5px; padding:2px 6px; }
.demo-messages .msg h1,.demo-messages .msg h2,.demo-messages .msg h3{ font-weight:600; line-height:1.35; margin:10px 0 6px; }
.demo-messages .msg h1{ font-size:17px; }
.demo-messages .msg h2{ font-size:16px; }
.demo-messages .msg h3{ font-size:15px; }
.demo-messages .msg p{ margin:5px 0; }
.demo-messages .msg ul,.demo-messages .msg ol{ margin:5px 0; padding-left:20px; }
.demo-messages .msg li{ margin:3px 0; }
.demo-messages .msg blockquote{ margin:6px 0; padding:5px 14px; border-left:3px solid var(--accent); color:var(--text-secondary); background:var(--card); border-radius:0 8px 8px 0; }
.demo-messages .msg pre{ margin:6px 0; padding:10px 14px; overflow-x:auto; background:rgba(15,23,42,.04); border:1px solid var(--border); border-radius:8px; }
.demo-messages .msg pre code{ background:none; border:none; padding:0; font-size:12px; line-height:1.5; white-space:pre; }
.demo-messages .msg table{ display:block; overflow-x:auto; border-collapse:collapse; margin:8px 0; font-size:12.5px; max-width:100%; }
.demo-messages .msg th,.demo-messages .msg td{ border:1px solid var(--border); padding:6px 10px; text-align:left; white-space:nowrap; }
.demo-messages .msg th{ background:var(--card); font-weight:600; }
.demo-messages .msg .doc-img{ display:inline-block; max-width:200px; max-height:160px; margin:8px 4px 0 0; border-radius:8px; border:1px solid var(--border); cursor:zoom-in; object-fit:cover; }
.demo-inputbar{ display:flex; align-items:center; gap:10px; padding:14px 18px; border-top:1px solid var(--border); background:var(--bg-2); }
.demo-input{ flex:1; border:1px solid var(--border); border-radius:999px; padding:11px 18px; font-size:13px; background:var(--bg); color:var(--text); outline:none; }
.demo-input::placeholder{ color:var(--text-muted); }
.demo-input:focus{ border-color:var(--accent); }
.demo-input-ico{ flex-shrink:0; width:38px; height:38px; border-radius:50%; background:var(--accent); display:flex; align-items:center; justify-content:center; }
.demo-input-ico::after{ content:""; width:0; height:0; margin-left:3px; border-style:solid; border-width:5px 0 5px 9px; border-color:transparent transparent transparent #fff; }
.demo-tray{ display:flex; align-items:center; justify-content:center; gap:8px; flex-wrap:wrap; margin-top:24px; padding:16px 18px; background:var(--card); border:1px solid var(--border); border-radius:14px; width:100%; max-width:760px; }
.demo-tray-label{ font-size:13px; color:var(--text-secondary); }
.demo-chip{ border:1px solid rgba(37,99,235,.4); background:var(--accent-soft); color:var(--accent); font-size:13px; font-weight:500; padding:8px 16px; border-radius:999px; cursor:pointer; transition:all .2s var(--ease-apple); }
.demo-chip:hover{ background:rgba(37,99,235,.18); transform:translateY(-1px); }
.demo-chip:active{ transform:scale(.96); }
.demo-chip-ghost{ background:transparent; border-color:var(--border); color:var(--text-secondary); }
.demo-chip-ghost:hover{ background:var(--card); color:var(--text); transform:none; }
.demo-note{ margin-top:16px; text-align:center; font-size:12.5px; color:var(--text-muted); }
.demo-md{ line-height:1.65; }
.demo-features{ position:sticky; top:110px; background:var(--card); backdrop-filter:var(--glass-blur); -webkit-backdrop-filter:var(--glass-blur); border:1px solid var(--border); border-radius:20px; padding:28px 24px; box-shadow:var(--shadow-md); }
.df-title{ font-size:18px; font-weight:700; margin-bottom:18px; color:var(--text); letter-spacing:-.01em; }
.df-list{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:18px; }
.df-list li{ display:flex; gap:14px; align-items:flex-start; }
.df-list li > div{ display:flex; flex-direction:column; gap:3px; min-width:0; }
.df-list li strong{ font-size:14px; font-weight:600; color:var(--text); }
.df-list li span{ font-size:13px; color:var(--text-secondary); line-height:1.6; }
.df-ico{ flex-shrink:0; width:38px; height:38px; border-radius:10px; background:var(--accent-soft); color:var(--accent); border:1px solid rgba(37,99,235,.3); display:flex; align-items:center; justify-content:center; }
.df-ico svg{ width:18px; height:18px; }

/* ---------- 演示图片灯箱 ---------- */
.demo-lightbox{ position:fixed; inset:0; z-index:9998; background:rgba(0,0,0,.85); display:flex; align-items:center; justify-content:center; cursor:zoom-out; padding:24px; opacity:0; pointer-events:none; transition:opacity .2s; }
.demo-lightbox.show{ opacity:1; pointer-events:auto; }
.demo-lightbox img{ max-width:92vw; max-height:92vh; border-radius:12px; box-shadow:0 20px 60px rgba(0,0,0,.6); }

/* ==========================================================================
   Chapter 5 · 用数字说话（柱状图 + 进度条 + 大数字）
   ========================================================================== */
.module-numbers{ background:var(--chapter-data-bg); }
.module-numbers::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:
    radial-gradient(ellipse 40% 30% at 12% 10%, rgba(37,99,235,.06), transparent 70%),
    radial-gradient(ellipse 40% 30% at 88% 90%, rgba(6,182,212,.06), transparent 70%);
}
.metrics-mega-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; max-width:1200px; margin:0 auto; }
.metric-mega{ text-align:center; padding:48px 24px; background:var(--card); border:1px solid var(--border); border-radius:20px; box-shadow:var(--shadow-sm); transition:transform .4s var(--ease-apple), border-color .4s var(--ease-apple), box-shadow .4s var(--ease-apple); }
.metric-mega:hover{ transform:translateY(-6px) scale(1.02); border-color:var(--border-strong); box-shadow:var(--shadow-md); }
.mm-val-row{ display:flex; align-items:baseline; justify-content:center; gap:6px; margin-bottom:16px; }
.mm-val{ font-size:clamp(48px, 6vw, 76px); font-weight:800; letter-spacing:-.03em; line-height:1; color:var(--text); font-variant-numeric:tabular-nums; flex-shrink:0; }
.mm-val.in-view{ background:linear-gradient(180deg, var(--text) 0%, var(--accent) 120%); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; color:transparent; }
.mm-unit{ font-size:22px; font-weight:700; color:var(--accent); white-space:nowrap; flex-shrink:0; }
.mm-label{ font-size:20px; font-weight:600; color:var(--text); margin-bottom:8px; }
.mm-detail{ font-size:14px; color:var(--text-secondary); line-height:1.6; }

/* ---------- 柱状图（effects.js：.chart-fill 高度动画） ---------- */
.chart{ max-width:1200px; margin:0 auto; }
.chart-bars{ display:flex; align-items:flex-end; gap:18px; height:320px; padding:0 8px; }
.chart-bar{ flex:1; min-width:0; display:flex; flex-direction:column; align-items:center; justify-content:flex-end; gap:10px; height:100%; }
.chart-value{ order:1; font-size:16px; font-weight:800; color:var(--text); font-variant-numeric:tabular-nums; white-space:nowrap; }
.chart-fill{ order:2; width:54px; max-width:64%; min-height:8px; border-radius:10px 10px 4px 4px; background:linear-gradient(180deg, var(--accent-2), var(--accent)); transition:height 1.2s var(--ease-apple); }
.chart-label{ order:3; font-size:12.5px; color:var(--text-secondary); text-align:center; line-height:1.4; }

/* ---------- 进度条（新章节组件；.progress-fill 与配额共享样式） ---------- */
.progress-list{ max-width:820px; margin:0 auto; padding-top:56px; display:flex; flex-direction:column; gap:22px; }
.progress-item{ }
.progress-head{ display:flex; justify-content:space-between; font-size:14.5px; font-weight:600; margin-bottom:10px; }
.progress-val{ color:var(--accent); font-weight:800; font-variant-numeric:tabular-nums; }
.progress-track{ height:10px; background:var(--bg-3); border:1px solid var(--border); border-radius:999px; overflow:hidden; }
.progress-fill{ height:100%; border-radius:999px; background:linear-gradient(90deg, var(--accent), var(--accent-2)); transition:width 1.2s var(--ease-apple); }
.progress-fill.warn{ background:var(--warning); }
.progress-fill.danger{ background:var(--danger); }
.data-note{ margin-top:18px; text-align:center; font-size:12.5px; color:var(--text-muted); }

/* ==========================================================================
   Chapter 6 · 客户之声（轮播式评价，暖紫到蓝渐变底）
   ========================================================================== */
.module-testimonials{ background:var(--chapter-testimonial-bg); }
.module-testimonials::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(ellipse 45% 40% at 85% 15%, rgba(244,114,182,.06), transparent 70%),
              radial-gradient(ellipse 45% 40% at 12% 88%, rgba(37,99,235,.07), transparent 70%);
}
.testimonial{ position:relative; max-width:1200px; margin:0 auto; background:var(--card); border:1px solid var(--border); border-radius:24px; box-shadow:var(--shadow-md); overflow:hidden; }
.testimonial-track{ display:flex; transition:transform .6s var(--ease-apple); }
.testimonial-slide{ flex:0 0 100%; min-width:100%; display:flex; flex-direction:column; align-items:center; text-align:center; padding:56px 80px 44px; position:relative; }
.testimonial-badge{ position:absolute; top:18px; right:18px; font-size:11px; padding:3px 10px; border-radius:999px; background:var(--accent-soft); color:var(--accent); border:1px solid rgba(37,99,235,.25); letter-spacing:.5px; }
.testimonial-avatar{ width:64px; height:64px; border-radius:50%; background:linear-gradient(135deg,var(--accent),var(--accent-2)); color:#fff; font-size:24px; font-weight:800; display:flex; align-items:center; justify-content:center; margin-bottom:22px; box-shadow:0 10px 24px var(--accent-soft); }
.testimonial-slide:nth-child(2) .testimonial-avatar{ background:linear-gradient(135deg,#06b6d4,#0ea5e9); }
.testimonial-slide:nth-child(3) .testimonial-avatar{ background:linear-gradient(135deg,#f59e0b,#f97316); }
.testimonial-slide:nth-child(4) .testimonial-avatar{ background:linear-gradient(135deg,#10b981,#059669); }
.testimonial-quote{ font-size:clamp(17px,2.2vw,21px); line-height:1.8; color:var(--text); max-width:720px; font-weight:500; letter-spacing:-.01em; }
.testimonial-meta{ margin-top:24px; display:flex; flex-direction:column; gap:4px; }
.testimonial-name{ font-size:16px; font-weight:700; color:var(--text); }
.testimonial-role{ font-size:13px; color:var(--text-muted); }
.testimonial-arrow{ position:absolute; top:50%; transform:translateY(-50%); width:44px; height:44px; border-radius:50%; border:1px solid var(--border); background:var(--card); color:var(--text-secondary); display:flex; align-items:center; justify-content:center; cursor:pointer; z-index:2; box-shadow:var(--shadow-sm); transition:color .2s, border-color .2s, background .2s, transform .18s var(--ease-apple); }
.testimonial-arrow:active{ transform:translateY(-50%) scale(.94); }
.testimonial-arrow.prev{ left:16px; }
.testimonial-arrow.next{ right:16px; }
.testimonial-arrow svg{ width:20px; height:20px; }
.testimonial-arrow:hover{ color:var(--accent); border-color:var(--accent); background:var(--accent-soft); }
.testimonial-dots{ display:flex; justify-content:center; gap:8px; padding-bottom:22px; }
.testimonial-dot{ width:8px; height:8px; border-radius:999px; background:var(--border-strong); cursor:pointer; transition:all .3s var(--ease-apple); }
.testimonial-dot.active{ width:24px; background:var(--accent); }

/* ==========================================================================
   Chapter 7 · 团队实力（浅色底 + 斜向细纹）
   ========================================================================== */
.module-team{ background:var(--chapter-team-bg); }
.module-team::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:repeating-linear-gradient(115deg, rgba(15,23,42,.02) 0 1px, transparent 1px 28px);
}
.team-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; max-width:1200px; margin:0 auto; }
.team-card{ position:relative; background:var(--card); border:1px solid var(--border); border-radius:20px; padding:40px 30px; text-align:center; overflow:hidden; transition:transform .4s var(--ease-apple), border-color .4s var(--ease-apple), box-shadow .4s var(--ease-apple); }
.team-card::before{ content:""; position:absolute; top:0; left:0; right:0; height:3px; background:linear-gradient(90deg, var(--accent), var(--accent-2)); opacity:0; transition:opacity .3s; }
.team-card:hover{ transform:translateY(-6px) scale(1.02); border-color:var(--border-strong); box-shadow:var(--shadow-md); }
.team-card:hover::before{ opacity:1; }
.team-num{ font-size:clamp(40px,5vw,64px); font-weight:800; letter-spacing:-.03em; line-height:1; background:linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; color:transparent; margin-bottom:18px; }
.team-name{ font-size:20px; font-weight:700; color:var(--text); margin-bottom:10px; letter-spacing:-.01em; }
.team-desc{ font-size:14.5px; color:var(--text-secondary); line-height:1.7; }

/* ==========================================================================
   Chapter 8 · 安全合规（4 卡，保留既有风格）
   ========================================================================== */
.module-security{ background:linear-gradient(180deg, var(--bg-2) 0%, var(--bg) 100%); }
.module-security::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(ellipse 50% 40% at 50% 0%, rgba(37,99,235,.05), transparent 70%);
}
.security-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:20px; max-width:1200px; margin:0 auto; }
.security-card{ position:relative; background:var(--card); backdrop-filter:var(--glass-blur); -webkit-backdrop-filter:var(--glass-blur); border:1px solid var(--border); border-radius:20px; padding:32px 26px; transform-style:preserve-3d; overflow:hidden; transition:transform .4s var(--ease-apple), border-color .4s var(--ease-apple), box-shadow .4s var(--ease-apple); }
.security-card:hover{ transform:translateY(-6px) scale(1.02); border-color:var(--border-strong); box-shadow:var(--shadow-md); }
.sec-glare{ position:absolute; inset:0; border-radius:20px; background:radial-gradient(circle at var(--mx,50%) var(--my,50%), rgba(37,99,235,.08), transparent 50%); pointer-events:none; opacity:0; transition:opacity .25s; }
.security-card:hover .sec-glare{ opacity:1; }
.security-icon{ width:54px; height:54px; border-radius:14px; background:var(--accent-soft); border:1px solid rgba(37,99,235,.3); color:var(--accent); display:flex; align-items:center; justify-content:center; margin-bottom:20px; }
.security-icon svg{ width:26px; height:26px; }
.security-card h3{ font-size:19px; font-weight:700; color:var(--text); margin-bottom:10px; }
.security-card p{ font-size:14px; color:var(--text-secondary); line-height:1.7; margin-bottom:16px; }
.security-tag{ display:inline-block; font-size:12px; padding:4px 10px; border-radius:6px; background:var(--bg-3); border:1px solid var(--border); color:var(--accent); font-family:var(--mono); }

/* ==========================================================================
   Chapter 9 · 套餐订阅（业务组件契约区）
   ========================================================================== */
.module-plans{ background:var(--bg); }
.module-plans::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:radial-gradient(ellipse 55% 35% at 50% 0%, rgba(37,99,235,.05), transparent 70%);
}
.plans-panel{ background:linear-gradient(180deg, var(--bg-2) 0%, var(--bg) 100%); border:1px solid var(--border); border-radius:24px; padding:48px 40px 40px; max-width:1200px; margin:0 auto; position:relative; }
#trial-card{ margin-bottom:24px; }

/* ---------- 试用卡（契约） ---------- */
.trial-card{ display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; background:linear-gradient(135deg, rgba(37,99,235,.10), rgba(6,182,212,.05)); border:1px solid rgba(37,99,235,.3); border-left:4px solid var(--accent); border-radius:14px; padding:20px 24px; }
.trial-card-active{ border-left-color:var(--success); border-color:rgba(48,209,88,.3); background:linear-gradient(135deg, rgba(48,209,88,.1), rgba(48,209,88,.04)); }
.trial-card-done{ border-left-color:var(--text-muted); border-color:var(--border); background:var(--card); }
.trial-left{ display:flex; flex-direction:column; gap:7px; flex:1; min-width:250px; }
.trial-badge{ align-self:flex-start; padding:4px 14px; border-radius:999px; font-size:12px; font-weight:700; background:linear-gradient(135deg,#ff9f0a,#ff6b00); color:#fff; }
.trial-badge-active{ background:var(--success); color:#fff; }
.trial-badge-done{ background:var(--text-muted); }
.trial-title{ font-size:18px; font-weight:700; color:var(--text); }
.trial-desc{ font-size:14px; color:var(--text-secondary); line-height:1.7; }
.trial-actions{ display:flex; flex-direction:column; gap:10px; }
.trial-quota{ margin-top:8px; padding-top:12px; border-top:1px dashed var(--border); }
.trial-quota .quota-mini{ margin-top:10px; padding-top:0; border-top:none; }

/* ---------- 当前订阅状态条（契约） ---------- */
.sub-status-bar{ display:flex; align-items:center; gap:14px; flex-wrap:wrap; background:var(--card); border:1px solid var(--border); border-left:4px solid var(--accent); border-radius:12px; padding:14px 20px; margin-bottom:24px; }
.sub-status-icon{ width:32px; height:32px; border-radius:50%; background:var(--accent-soft); color:var(--accent); font-size:14px; font-weight:800; display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.sub-status-icon-empty{ background:var(--card); color:var(--accent); }
.sub-status-txt{ display:flex; align-items:center; gap:10px; flex-wrap:wrap; flex:1; min-width:220px; font-size:14px; }
.sub-status-txt strong{ font-weight:700; }
.sub-status-meta{ font-size:13px; color:var(--text-secondary); }

/* ---------- 月付/年付切换（契约：.period-btn） ---------- */
.plan-period-toggle{ display:flex; align-items:center; gap:4px; justify-content:center; width:max-content; margin:0 auto 22px; padding:4px; background:var(--bg-2); border:1px solid var(--border); border-radius:999px; }
.period-btn{ border:none; background:transparent; color:var(--text-secondary); font-size:14px; font-weight:600; padding:8px 26px; border-radius:999px; cursor:pointer; transition:all .18s; }
.period-btn:hover{ color:var(--text); }
.period-btn.active{ background:var(--text); color:var(--bg); }

/* ---------- 套餐卡（契约：.plan-card 全套） ---------- */
.plans-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:24px; }
.plans-grid.flash .plan-card{ animation:planFlash 1.5s ease; }
@keyframes planFlash{ 0%{ box-shadow:0 0 0 0 rgba(37,99,235,.45); border-color:var(--accent); } 100%{ box-shadow:0 0 0 14px rgba(37,99,235,0); border-color:var(--border); } }
.plan-card{ position:relative; display:flex; flex-direction:column; gap:18px; background:var(--card); backdrop-filter:var(--glass-blur); -webkit-backdrop-filter:var(--glass-blur); border:1px solid var(--border); border-radius:16px; padding:32px 26px; overflow:hidden; transition:transform .3s var(--ease-apple), border-color .3s var(--ease-apple), box-shadow .3s var(--ease-apple); }
.plan-card > .btn{ margin-top:auto; }
.plan-card:hover{ transform:translateY(-5px); border-color:var(--border-strong); box-shadow:var(--shadow-md); }
.plan-card::before{ content:""; position:absolute; top:0; left:0; right:0; height:4px; background:linear-gradient(90deg,var(--accent),var(--accent-2)); border-radius:16px 16px 0 0; }
.plan-card.plan-featured{ border-color:var(--accent); border-width:1.5px; box-shadow:0 20px 60px rgba(37,99,235,.14); background:linear-gradient(180deg, var(--card) 0%, rgba(37,99,235,.05) 100%); }
.plan-card.plan-current{ border-color:#30d158; border-width:1.5px; }
.plan-card.plan-current::before{ background:linear-gradient(90deg,#30d158,#5be584); }
.plan-card.plan-free::before{ background:var(--text-muted); }
.plan-ribbon{ position:absolute; top:0; left:0; z-index:2; background:var(--accent); color:#fff; font-size:12px; font-weight:700; padding:6px 14px; border-bottom-right-radius:10px; }
.plan-ribbon-current{ left:auto; right:0; background:var(--success); color:#fff; border-bottom-right-radius:0; border-bottom-left-radius:10px; }
.plan-head{ display:flex; flex-direction:column; gap:6px; }
.plan-name{ font-size:20px; font-weight:700; letter-spacing:-.01em; }
.plan-desc{ margin-top:4px; font-size:13.5px; color:var(--text-secondary); min-height:42px; line-height:1.6; }
.plan-desc.dim{ color:var(--text-muted); }
/* 平台级差异化能力（2026-08-24）：3 个功能点，所有套餐统一展示 */
.plan-diff-features{ display:flex; flex-direction:column; gap:6px; margin:12px 0; padding:10px 12px; background:var(--accent-soft); border:1px solid rgba(37,99,235,.18); border-radius:10px; }
.plan-feature{ display:flex; align-items:center; gap:7px; font-size:12.5px; color:var(--text); }
.pf-ico{ font-size:14px; line-height:1; }
.pf-txt{ font-weight:500; }
.plan-price-line{ display:flex; align-items:baseline; gap:6px; margin-top:2px; flex-wrap:wrap; }
.plan-price{ font-size:24px; font-weight:800; color:var(--accent); letter-spacing:-.01em; }
.plan-price.free{ color:var(--success); font-size:18px; font-weight:700; }
.plan-price-period{ font-size:13px; color:var(--text-secondary); }
.price-original{ color:var(--text-muted); font-size:14px; font-weight:600; text-decoration:line-through; }
.metrics{ display:grid; grid-template-columns:1fr 1fr; gap:10px; }
.metrics-3{ grid-template-columns:repeat(3,1fr); }
.metric{ background:var(--bg-2); border:1px solid var(--border); border-radius:10px; padding:12px 14px; }
.metric-key{ background:var(--accent-soft); border-color:rgba(37,99,235,.3); }
.metric-key .m-val{ color:var(--accent); }
.m-val{ font-size:20px; font-weight:800; color:var(--text); font-variant-numeric:tabular-nums; }
.m-unit{ font-size:13px; font-weight:600; color:var(--text-secondary); }
.m-label{ margin-top:3px; font-size:12px; color:var(--text-secondary); }
.tag-row{ display:flex; flex-wrap:wrap; gap:6px; margin-top:2px; }
/* 线性功能图标（图片识别/图文问答，与 capability 卡线性 SVG 风格一致） */
.svg-icon{ display:inline-flex; align-items:center; justify-content:center; vertical-align:middle; line-height:0; }
.svg-icon svg{ width:1em; height:1em; color:currentColor; }
.m-val .svg-icon svg{ width:22px; height:22px; }
.badge .svg-icon svg{ width:12px; height:12px; }

/* ---------- 对比表（契约：.compare-* + .cmp-*） ---------- */
.compare-area{ text-align:center; margin-top:32px; }
.compare-panel{ margin-top:20px; }
.compare-scroll{ overflow-x:auto; border:1px solid var(--border); border-radius:14px; background:var(--bg-2); box-shadow:var(--shadow-sm); }
.compare-table{ width:100%; border-collapse:collapse; min-width:720px; font-size:13px; }
.compare-table th,.compare-table td{ padding:14px 16px; border-bottom:1px solid var(--border); text-align:center; white-space:nowrap; vertical-align:middle; }
.compare-table thead th{ background:var(--bg-3); font-weight:700; border-bottom:2px solid var(--border); }
.compare-th{ font-weight:700; }
.compare-td{ }
.compare-table .compare-metric{ text-align:left; background:var(--bg-2); font-weight:600; color:var(--text-secondary); position:sticky; left:0; z-index:1; border-right:1px solid var(--border); }
.compare-table tbody tr:last-child td{ border-bottom:none; }
.compare-table .col-top{ background:rgba(37,99,235,.08); }
.compare-table .col-cur{ background:rgba(48,209,88,.08); box-shadow:inset 0 0 0 1px rgba(48,209,88,.3); }
.compare-table .col-top.col-cur{ background:linear-gradient(180deg, rgba(37,99,235,.08), rgba(48,209,88,.08)); }
.cmp-name{ font-weight:700; color:var(--text); }
.cmp-price{ font-size:13px; font-weight:700; color:var(--accent); margin:2px 0 4px; }
.cmp-price-main{ font-size:15px; font-weight:800; color:var(--accent); }
.cmp-tag{ display:inline-block; padding:3px 10px; border-radius:999px; font-size:11px; font-weight:700; }
.cmp-tag-top{ background:var(--accent); color:#fff; }
.cmp-tag-cur{ background:var(--success); color:#fff; }

/* ---------- 配额进度（契约：.quota-mini* + .progress/.progress-fill） ---------- */
.quota-mini{ display:flex; flex-direction:column; gap:12px; margin-top:16px; padding-top:16px; border-top:1px solid var(--border); }
.quota-mini-item{ display:flex; flex-direction:column; gap:5px; }
.quota-mini-head{ display:flex; align-items:center; justify-content:space-between; font-size:13px; }
.quota-mini-label{ color:var(--text-secondary); }
.quota-mini-val{ font-weight:700; color:var(--text); }
.quota-mini-val .used{ color:var(--accent); }
.progress{ height:6px; background:var(--bg-3); border-radius:999px; overflow:hidden; }

/* ==========================================================================
   我的订阅 / 订阅结果 动态注入区（app.js 写入 HTML）
   ========================================================================== */
#my-sub-section, #result-section{ max-width:1200px; margin:0 auto; padding:64px 32px; }
.sec-head{ text-align:center; margin-bottom:40px; }
.sec-title{ font-size:clamp(28px,4vw,44px); font-weight:700; letter-spacing:-.02em; color:var(--text); margin-bottom:12px; }
.sec-sub{ font-size:16px; color:var(--text-secondary); }

/* ==========================================================================
   Chapter 10 · FAQ（保留既有风格 + 平滑展开）
   ========================================================================== */
.module-faq{ background:linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%); }
.module-faq::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(180deg, rgba(37,99,235,.04), transparent 40%);
}
.faq-shell{ display:grid; grid-template-columns:300px minmax(0,1fr); gap:28px; align-items:start; max-width:1200px; margin:0 auto; }
.faq-aside{ position:sticky; top:110px; display:flex; flex-direction:column; gap:18px; }
.faq-aside-title{ font-size:12px; font-weight:700; letter-spacing:2px; color:var(--text-muted); padding-left:14px; }
.faq-toc{ display:flex; flex-direction:column; gap:4px; background:var(--card); backdrop-filter:var(--glass-blur); -webkit-backdrop-filter:var(--glass-blur); border:1px solid var(--border); border-radius:14px; padding:10px; }
.faq-toc a{ display:block; padding:10px 14px; font-size:14px; color:var(--text-secondary); border-radius:8px; transition:all .2s var(--ease-apple); }
.faq-toc a:hover{ background:var(--accent-soft); color:var(--accent); }
.faq-aside-card{ background:linear-gradient(135deg, var(--accent-soft), rgba(6,182,212,.05)); border:1px solid rgba(37,99,235,.3); border-radius:14px; padding:22px; }
.faq-aside-card strong{ font-size:15px; font-weight:700; color:var(--text); display:block; margin-bottom:8px; }
.faq-aside-card p{ font-size:13px; color:var(--text-secondary); line-height:1.7; margin-bottom:14px; }
.faq-list{ background:var(--card); backdrop-filter:var(--glass-blur); -webkit-backdrop-filter:var(--glass-blur); border:1px solid var(--border); border-radius:16px; overflow:hidden; box-shadow:var(--shadow-md); }
.faq-item{ border-bottom:1px solid var(--border); }
.faq-item:last-child{ border-bottom:none; }
.faq-item summary{ display:flex; align-items:center; justify-content:space-between; gap:14px; padding:22px 26px; cursor:pointer; user-select:none; list-style:none; font-size:16px; font-weight:600; color:var(--text); transition:background .2s; }
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary:hover{ background:var(--bg-2); }
.faq-q{ flex:1; line-height:1.6; }
.faq-arrow{ display:inline-flex; align-items:center; justify-content:center; width:32px; height:32px; border-radius:50%; background:var(--accent-soft); color:var(--accent); font-weight:600; font-size:20px; line-height:1; flex-shrink:0; transition:transform .25s var(--ease-apple), background .25s var(--ease-apple), color .25s var(--ease-apple); }
.faq-item[open] .faq-arrow{ transform:rotate(45deg); background:var(--accent); color:#fff; }
.faq-a{ padding:4px 26px 24px; font-size:15px; color:var(--text-secondary); line-height:1.85; }
.faq-a strong{ color:var(--text); font-weight:600; }
.faq-a code{ font-family:var(--mono); font-size:13px; background:var(--bg-2); border:1px solid var(--border); padding:2px 8px; border-radius:5px; color:var(--accent); }

/* ==========================================================================
   Chapter 11 · CTA（辉光渐变 + 漂浮几何图形）
   ========================================================================== */
.module-cta{ display:flex; align-items:center; justify-content:center; text-align:center; padding:110px 32px; background:var(--chapter-cta-bg); }
.cta-shapes{ position:absolute; inset:0; overflow:hidden; pointer-events:none; }
.shape{ position:absolute; border-radius:50%; }
.shape-1{ width:320px; height:320px; top:-100px; left:-80px; background:radial-gradient(circle, rgba(37,99,235,.14), transparent 70%); animation:shapeFloat 12s ease-in-out infinite; }
.shape-2{ width:170px; height:170px; top:18%; right:6%; border:26px solid rgba(37,99,235,.06); animation:shapeFloat 16s ease-in-out infinite reverse; }
.shape-3{ width:90px; height:90px; bottom:-24px; left:12%; background:radial-gradient(circle, rgba(6,182,212,.12), transparent 70%); animation:shapeFloat 14s ease-in-out infinite; }
.shape-4{ width:46px; height:46px; top:16%; left:28%; border-radius:14px; background:rgba(37,99,235,.08); transform:rotate(45deg); animation:shapeSpin 18s linear infinite; }
@keyframes shapeFloat{ 0%,100%{ transform:translateY(0); } 50%{ transform:translateY(-20px); } }
@keyframes shapeSpin{ from{ transform:rotate(0deg); } to{ transform:rotate(360deg); } }
.cta-shell{ max-width:880px; margin:0 auto; position:relative; }
.cta-title{ font-size:clamp(36px, 5vw, 64px); font-weight:700; letter-spacing:-.02em; line-height:1.15; color:var(--text); margin-bottom:24px; }
.cta-sub{ font-size:20px; color:var(--text-secondary); margin-bottom:40px; }
.cta-buttons{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }
.cta-buttons .btn-primary{ padding:18px 40px; font-size:17px; box-shadow:0 12px 40px rgba(37,99,235,.24); }
.cta-buttons .btn-ghost{ padding:18px 36px; font-size:17px; }

/* ==========================================================================
   页脚（保持既有风格）
   ========================================================================== */
.footer{ position:relative; background:linear-gradient(180deg, var(--footer-bg-start) 0%, var(--footer-bg-end) 100%); color:var(--text-secondary); border-top:1px solid var(--border); padding-top:64px; }
.footer::before{ content:""; position:absolute; top:0; left:0; right:0; height:1px; background:linear-gradient(90deg, transparent, rgba(37,99,235,.5), transparent); }
.footer-inner{ max-width:var(--container-max); margin:0 auto; padding:0 32px 48px; display:grid; grid-template-columns:1.6fr 1fr 1fr 1.3fr; gap:40px; }
.footer-brand .brand-name{ color:var(--text); }
.footer-desc{ margin-top:18px; font-size:14px; line-height:1.8; color:var(--text-muted); }
.footer-cert{ display:flex; gap:8px; margin-top:20px; flex-wrap:wrap; }
.footer-cert-item{ font-size:12px; color:var(--accent); background:var(--accent-soft); border:1px solid rgba(37,99,235,.3); padding:4px 12px; border-radius:999px; }
.footer-col h4{ font-size:13px; font-weight:700; letter-spacing:1.5px; color:var(--text); margin-bottom:18px; text-transform:uppercase; }
.footer-col a, .footer-col span{ display:block; font-size:14px; color:var(--text-muted); margin-bottom:12px; cursor:pointer; transition:color .15s; }
.footer-col a:hover{ color:var(--accent); }
.footer-hint{ display:block; font-size:12px; color:var(--text-muted); margin-top:-4px; margin-bottom:12px; font-style:italic; }
.footer-email{ font-family:var(--mono); font-size:13px; }
.footer-icp{ font-size:12px; color:var(--text-muted); font-family:var(--mono); }
.footer-icp a{ color:inherit; text-decoration:none; }
.footer-icp a:hover{ color:var(--accent); text-decoration:underline; }
.footer-bottom{ border-top:1px solid var(--border); }
.footer-bottom-inner{ max-width:var(--container-max); margin:0 auto; padding:20px 32px; display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap; font-size:13px; color:var(--text-muted); }

/* ==========================================================================
   Toast（保持既有风格）
   ========================================================================== */
.toast{ position:fixed; top:24px; left:50%; transform:translateX(-50%) translateY(-16px); background:var(--bg-3); color:var(--text); padding:12px 22px; border-radius:10px; font-size:14px; opacity:0; pointer-events:none; transition:all .25s var(--ease-apple); z-index:2000; box-shadow:var(--shadow-md); border:1px solid var(--border); max-width:90vw; }
.toast.show{ opacity:1; transform:translateX(-50%) translateY(0); }
.toast.success{ border-color:var(--success); }
.toast.error{ border-color:var(--danger); }

/* ==========================================================================
   Result / Modal（业务组件契约区）
   ========================================================================== */
.result-card{ background:var(--bg-2); border:1px solid var(--border); border-radius:16px; box-shadow:var(--shadow-md); overflow:hidden; }
.result-head{ display:flex; align-items:center; gap:16px; padding:24px 28px; background:linear-gradient(180deg, var(--bg-3), var(--bg-2)); border-bottom:1px solid var(--border); }
.result-icon{ width:48px; height:48px; border-radius:50%; background:var(--success); color:#fff; display:flex; align-items:center; justify-content:center; font-size:24px; font-weight:800; box-shadow:0 8px 20px rgba(48,209,88,.4); flex-shrink:0; }
.result-title h3{ font-size:19px; font-weight:700; }
.result-title p{ margin-top:4px; font-size:14px; color:var(--text-secondary); }
.result-title .plan-line{ font-size:15px; font-weight:600; color:var(--text); }
.cred-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:14px; padding:22px 28px; }
.cred-item{ position:relative; background:var(--bg-3); border:1px solid var(--border); border-radius:10px; padding:16px 18px; }
.cred-item .cred-label{ display:block; font-size:12px; color:var(--text-secondary); margin-bottom:6px; }
.cred-item .cred-value{ display:block; font-family:var(--mono); font-size:15px; font-weight:700; word-break:break-all; padding-right:64px; color:var(--text); }
.cred-item .copy-btn{ position:absolute; top:14px; right:14px; padding:4px 12px; font-size:12px; }
.copy-btn.copied{ background:var(--success); border-color:var(--success); color:#fff; }
.result-actions{ display:flex; align-items:center; gap:16px; padding:4px 28px 28px; flex-wrap:wrap; }
.hint{ font-size:13px; color:var(--text-secondary); }
.link-list{ display:flex; flex-direction:column; gap:14px; padding:24px 28px; }
.link-item{ background:var(--bg-3); border:1px solid var(--border); border-radius:10px; padding:18px 20px; }
.link-label{ font-size:13px; font-weight:700; }
.link-url{ margin:8px 0 14px; font-family:var(--mono); font-size:13px; color:var(--text-secondary); word-break:break-all; }
.link-actions{ display:flex; gap:8px; flex-wrap:wrap; }
.result-meta{ display:flex; gap:26px; flex-wrap:wrap; padding:0 28px 26px; font-size:14px; color:var(--text-secondary); }
.result-meta .mono{ color:var(--text); }
.cred-block{ padding:24px 28px 0; }
.cred-title{ font-size:14px; font-weight:700; color:var(--text-secondary); margin-bottom:14px; }
.cred-block .cred-grid{ padding:0; }
.cred-tip{ margin:14px 0 0; font-size:13px; color:var(--text-secondary); }
.cred-item .cred-value-wider{ padding-right:92px; }
.empty-card{ padding:24px 28px; }
.sub-card .sub-row{ display:flex; align-items:center; justify-content:space-between; gap:18px; flex-wrap:wrap; }
.sub-card .sub-info{ min-width:0; flex:1; }
.sub-card .sub-name{ font-size:20px; font-weight:700; display:flex; align-items:center; gap:10px; flex-wrap:wrap; }
.sub-card .sub-meta{ display:flex; gap:30px; flex-wrap:wrap; margin-top:14px; }
.sub-meta-item{ display:flex; flex-direction:column; gap:2px; }
.sub-meta-item strong{ font-size:16px; }
.sub-actions{ display:flex; gap:10px; flex-wrap:wrap; }
.link-card{ padding:8px 10px; }
.link-card .link-list{ padding:14px 16px; }
.upgrade-tip{ background:var(--accent-soft); border:1px solid rgba(37,99,235,.3); border-radius:10px; padding:12px 16px; margin-bottom:18px; font-size:14px; color:var(--text-secondary); }
.upgrade-tip strong{ color:var(--accent); }
.upgrade-grid{ display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-bottom:6px; }
.upgrade-card{ display:flex; flex-direction:column; gap:10px; border:1px solid var(--border); border-radius:12px; padding:16px 18px; background:var(--bg-2); transition:border-color .2s, box-shadow .2s; }
.upgrade-card:hover{ border-color:rgba(37,99,235,.4); box-shadow:var(--shadow-sm); }
.upgrade-head{ display:flex; align-items:baseline; justify-content:space-between; gap:8px; }
.upgrade-name{ font-size:16px; font-weight:700; }
.upgrade-price{ font-size:17px; font-weight:800; color:var(--accent); white-space:nowrap; }
.upgrade-mode{ align-self:flex-start; font-size:12px; color:var(--accent); background:var(--accent-soft); border:1px solid rgba(37,99,235,.3); border-radius:999px; padding:3px 11px; }
.upgrade-meta{ display:flex; gap:8px; flex-wrap:wrap; font-size:13px; color:var(--text-secondary); }
.upgrade-meta span{ background:var(--bg); border-radius:6px; padding:4px 9px; }

/* ---------- Badge（契约） ---------- */
.badge{ display:inline-block; padding:4px 12px; border-radius:999px; font-size:12px; font-weight:600; }
.badge-pending{ background:var(--accent-soft); color:var(--accent); border:1px solid rgba(37,99,235,.3); }
.badge-active{ background:rgba(48,209,88,.12); color:var(--success); border:1px solid rgba(48,209,88,.3); }
.badge-expired{ background:var(--danger-soft); color:var(--danger); border:1px solid rgba(220,38,38,.3); }
.badge-disabled{ background:var(--card); color:var(--text-muted); }
.badge-vlm{ background:var(--accent-soft); color:var(--accent); border:1px solid rgba(37,99,235,.3); }
.badge-trial{ background:rgba(255,159,10,.16); color:var(--warning); border:1px solid rgba(255,159,10,.3); }
.badge-period{ background:rgba(37,99,235,.12); color:var(--accent); border:1px solid rgba(37,99,235,.3); }
.badge-first-disc{ background:linear-gradient(135deg,#ff9f0a,#ff6b00); color:#fff; border:none; }
.plan-upgrade-mode{ background:var(--accent-soft); color:var(--accent); border:1px solid rgba(37,99,235,.3); }

/* ---------- Modal（保持既有风格） ---------- */
#modal-overlay{ position:fixed; inset:0; background:var(--modal-overlay); backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px); z-index:1000; display:flex; align-items:center; justify-content:center; padding:20px; }
#modal-box{ position:relative; background:var(--bg-2); border:1px solid var(--border); border-radius:20px; padding:32px 32px; width:min(640px,94vw); max-height:88vh; overflow-y:auto; box-shadow:var(--shadow-lg); animation:modalIn .25s var(--ease-apple); }
@keyframes modalIn{ from{ opacity:0; transform:translateY(16px) scale(.98); } to{ opacity:1; transform:none; } }
#modal-box h3{ font-size:22px; font-weight:700; margin-bottom:22px; padding-right:32px; letter-spacing:-.01em; }
.login-tabs{ display:flex; gap:8px; margin-bottom:20px; border-bottom:1px solid var(--border); }
.login-tab{ flex:1; padding:10px 0; border:none; background:transparent; color:var(--text-secondary); font-size:15px; font-weight:600; cursor:pointer; border-bottom:2px solid transparent; transition:.2s var(--ease-apple); }
.login-tab:hover{ color:var(--text); }
.login-tab.active{ color:var(--accent); border-bottom-color:var(--accent); }
.modal-close{ position:absolute; top:14px; right:14px; width:32px; height:32px; border:none; background:transparent; color:var(--text-muted); font-size:16px; line-height:1; cursor:pointer; border-radius:8px; transition:.2s var(--ease-apple); }
.modal-close:hover{ background:var(--card); color:var(--text); }
.form-group{ margin-bottom:18px; }
.form-group label{ display:block; margin-bottom:8px; font-size:14px; font-weight:600; }
.form-group input, .form-group textarea, .form-group select{ width:100%; padding:12px 16px; border:1px solid var(--border); border-radius:10px; font-size:15px; font-family:inherit; background:var(--bg-3); color:var(--text); outline:none; transition:.2s var(--ease-apple); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus{ border-color:var(--accent); box-shadow:0 0 0 4px var(--accent-soft); }
.form-group input[type="checkbox"]{ width:auto; padding:0; border:0; border-radius:0; background:transparent; box-shadow:none; flex-shrink:0; margin-top:3px; }
.form-group .consent-row{ display:flex; gap:8px; align-items:flex-start; margin-top:4px; }
.form-group .consent-row label{ flex:1; min-width:0; font-size:13px; font-weight:400; color:var(--text-2); margin:0; cursor:pointer; line-height:1.5; word-break:break-word; }
.plan-summary{ display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap; background:var(--accent-soft); border:1px solid rgba(37,99,235,.3); border-radius:10px; padding:14px 18px; margin-bottom:20px; }
.plan-sum-name{ font-weight:700; font-size:16px; color:var(--accent); }
.plan-sum-meta{ font-size:13px; color:var(--text-secondary); }
.discount-tip{ margin:-8px 0 18px; padding:12px 16px; border-radius:10px; font-size:14px; background:rgba(255,159,10,.12); border:1px solid rgba(255,159,10,.3); color:#ff9f0a; }
.discount-tip del{ color:var(--text-muted); margin:0 4px; }
.discount-tip strong{ color:var(--warning); }
.toolbar.right{ display:flex; justify-content:flex-end; gap:10px; margin-top:6px; }
.info-grid{ display:grid; grid-template-columns:1fr 1fr; gap:12px 18px; margin-bottom:18px; }
.info-item{ display:flex; flex-direction:column; gap:3px; }
.info-label{ font-size:12px; color:var(--text-secondary); }
.hint-text{ font-size:14px; color:var(--text-secondary); }
.empty{ text-align:center; padding:48px 24px; color:var(--text-secondary); font-size:14px; }

/* ---------- 通用 ---------- */
.card{ background:var(--card); border:1px solid var(--border); border-radius:14px; box-shadow:var(--shadow-sm); padding:20px 22px; }
.mono{ font-family:var(--mono); font-size:13px; }

/* ==========================================================================
   官方客服悬浮窗（保持既有风格）
   ========================================================================== */
.support-widget{ position:fixed; right:24px; bottom:24px; z-index:700; }
.support-fab{ width:60px; height:60px; border-radius:50%; border:none; cursor:pointer; background:linear-gradient(135deg,var(--accent),var(--accent-2)); color:#fff; display:flex; align-items:center; justify-content:center; box-shadow:0 12px 32px rgba(37,99,235,.45); transition:transform .25s var(--ease-apple), box-shadow .25s var(--ease-apple); }
.support-fab:hover{ transform:translateY(-3px); box-shadow:0 16px 40px rgba(37,99,235,.55); }
.support-fab svg{ width:28px; height:28px; }
.support-fab .support-fab-close{ display:none; }
.support-widget.open .support-fab .support-fab-icon{ display:none; }
.support-widget.open .support-fab .support-fab-close{ display:block; }
.support-fab-badge{ position:absolute; top:4px; right:4px; width:10px; height:10px; border-radius:50%; background:var(--success); border:2px solid var(--bg); }
.support-panel{ position:fixed; right:24px; bottom:96px; z-index:700; width:380px; height:560px; max-height:calc(100vh - 140px); background:var(--bg-2); border:1px solid var(--border); border-radius:20px; box-shadow:var(--shadow-lg); display:flex; flex-direction:column; overflow:hidden; }
.support-body{ flex:1; min-height:0; }
.support-frame{ width:100%; height:100%; border:none; display:block; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1100px){
  .topbar-nav{ display:none; }
  .cap-grid{ grid-template-columns:repeat(2,1fr); }
  .cap-card.cap-wide{ grid-column:1 / -1; }
  .cap-card.cap-wide .cap-col + .cap-col{ border-left:1px dashed var(--border-strong); padding-left:28px; }
  .cap-grid .cap-card:not(.cap-wide):last-child{ grid-column:1 / -1; }
  .pain-grid{ grid-template-columns:repeat(2,1fr); }
  .security-grid{ grid-template-columns:repeat(2,1fr); }
  .scenarios-grid{ grid-template-columns:repeat(2,1fr); }
  .metrics-mega-grid{ grid-template-columns:repeat(2,1fr); }
  .team-grid{ grid-template-columns:repeat(3,1fr); }
  .footer-inner{ grid-template-columns:1fr 1fr; gap:32px; }
}
@media (max-width:900px){
  .module{ padding:80px 20px; }
  .container{ padding:0 20px; }
  .module-head{ margin-bottom:40px; }
  .demo-shell{ grid-template-columns:1fr; gap:24px; }
  .demo-features{ position:static; }
  .faq-shell{ grid-template-columns:1fr; }
  .faq-aside{ position:static; }
  .faq-toc{ display:none; }
  .tabs{ margin-bottom:36px; }
  .tab-panels{ padding:24px 22px; }
  .hero-inner{ padding:0 12px; }
  .hero-title{ margin-top:24px; }
  .hero-trust{ gap:10px; font-size:13px; }
  .trust-sep{ display:none; }
  .trust-item{ background:var(--card); padding:4px 12px; border-radius:999px; border:1px solid var(--border); }
  .carousel-arrow{ width:36px; height:36px; }
  .carousel-arrow svg{ width:16px; height:16px; }
  .carousel-arrow.prev{ left:8px; }
  .carousel-arrow.next{ right:8px; }
  .carousel-slide{ padding:22px 56px; white-space:normal; text-align:center; }
  .testimonial-slide{ padding:48px 28px 40px; }
  .testimonial-quote{ font-size:18px; }
  .testimonial-arrow{ width:36px; height:36px; }
  .testimonial-arrow.prev{ left:10px; }
  .testimonial-arrow.next{ right:10px; }
  .plans-panel{ padding:36px 24px 28px; }
  #my-sub-section, #result-section{ padding:48px 20px; }
  .cap-card.cap-wide{ flex-direction:column; gap:26px; }
  .cap-card.cap-wide .cap-col + .cap-col{ border-left:none; padding-left:0; border-top:1px dashed var(--border-strong); padding-top:26px; }
}
@media (max-width:600px){
  .topbar-inner{ padding:12px 16px; }
  .hero-title{ font-size:clamp(40px, 11vw, 56px); }
  .hero-sub{ font-size:16px; }
  .hero-cta-row .btn-hero{ padding:14px 26px; font-size:15px; }
  .demo-messages{ height:380px; padding:16px 14px; }
  .demo-header{ padding:14px 16px; }
  .demo-messages .msg{ max-width:90%; font-size:13px; }
  .demo-tray{ padding:12px; }
  .pain-grid{ grid-template-columns:1fr; }
  .cap-grid{ grid-template-columns:1fr; }
  .scenarios-grid{ grid-template-columns:1fr; }
  .security-grid{ grid-template-columns:1fr; }
  .metrics-mega-grid{ grid-template-columns:1fr; gap:16px; }
  .mm-val{ font-size:clamp(48px, 16vw, 76px); }
  .mm-unit{ font-size:20px; }
  .team-grid{ grid-template-columns:1fr; }
  .chart-bars{ height:240px; gap:10px; }
  .chart-fill{ width:36px; }
  .chart-value{ font-size:13px; }
  .chart-label{ font-size:11px; }
  .tab-bar{ flex-wrap:nowrap; overflow-x:auto; justify-content:flex-start; padding-bottom:4px; -webkit-overflow-scrolling:touch; }
  .tab-btn{ flex-shrink:0; }
  .carousel-slide{ padding:20px 48px; font-size:18px; }
  .carousel-slide svg{ width:24px; height:24px; }
  .testimonial-slide{ padding:44px 18px 36px; }
  .testimonial-avatar{ width:56px; height:56px; font-size:20px; }
  .testimonial-quote{ font-size:16px; line-height:1.75; }
  .module-cta{ padding:80px 20px; }
  .cta-title{ font-size:32px; }
  .cta-sub{ font-size:17px; margin-bottom:28px; }
  .cta-buttons .btn-primary, .cta-buttons .btn-ghost{ padding:15px 28px; font-size:16px; }
  .footer-inner{ grid-template-columns:1fr; gap:28px; padding:0 20px 32px; }
  .footer-bottom-inner{ flex-direction:column; align-items:flex-start; padding:16px 20px; gap:8px; }
  .support-panel{ right:12px; left:12px; bottom:12px; width:auto; height:min(70vh,560px); max-height:calc(100vh - 24px); }
  .support-widget{ right:14px; bottom:14px; }
}

/* ==========================================================================
   无障碍：prefers-reduced-motion（关闭全部动画，保留静态状态）
   ========================================================================== */
@media (prefers-reduced-motion: reduce){
  [data-reveal]{ opacity:1; transform:none; transition:none; }
  .demo-messages .msg, .demo-online-dot, .scroll-arrow, .hero-eyebrow .dot, .demo-cursor{ animation:none !important; transition:none !important; }
  .cap-card, .security-card, .scenario-card, .pain-card, .team-card, .metric-mega, .demo-features, .support-fab, .plan-card{ transition:none !important; }
  .mm-val.in-view{ background:none; -webkit-text-fill-color:var(--text); color:var(--text); }
  .shape-1, .shape-2, .shape-3, .shape-4{ animation:none !important; }
  .carousel-track, .testimonial-track, .tab-panel.active{ transition:none !important; animation:none !important; }
  .progress-fill, .chart-fill{ transition:none !important; }
  .btn-sheen::after, .btn-hero::after{ display:none; }
  .btn:active, .btn-hero:active{ transform:none; }
}

/* ---------- 加量包区（2026-08-21） ---------- */
.topup-area{ margin-top:48px; padding-top:36px; border-top:1px solid var(--border); }
.topup-head{ text-align:center; margin-bottom:22px; }
.topup-head h3{ font-size:22px; font-weight:700; margin-bottom:6px; }
.topup-head p{ font-size:14px; color:var(--text-secondary); }
.topup-area-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(200px,1fr)); gap:14px; max-width:820px; margin:0 auto; }
.topup-area-card{ background:var(--card); border:1px solid var(--border); border-radius:14px; padding:18px; text-align:center; box-shadow:var(--shadow-sm); }
.topup-area-name{ font-weight:600; font-size:15px; margin-bottom:6px; }
.topup-area-count{ font-size:20px; font-weight:700; color:var(--accent); margin-bottom:4px; }
.topup-area-price{ font-size:14px; color:var(--text-secondary); margin-bottom:12px; }