/* ==========================================================================
   模板 02 · 暗金视频主视觉
   特点：全屏主视觉 + 悬浮下载卡片 + 数据滚动条 + 图文交替 + 价格表
   ========================================================================== */

:root {
  /* ---- 基础背景与文字 ---- */
  --bg: #0a0d16;
  --bg-soft: #0d111e;
  --panel: #12172a;
  --panel-2: #171d33;
  --line: rgba(255, 255, 255, 0.09);
  --text: #f2f4fa;
  --dim: #a8b0c4;
  --mute: #737d95;
  --up: #2fd68a;
  --down: #ff6b81;

  /* ---- 主色（换风格只改这一段即可） ---- */
  --gold: #f0b90b;
  --gold-2: #f8d43b;
  --accent-rgb: 240, 185, 11;
  --on-accent: #1a1405;
  --on-accent-rgb: 26, 20, 5;
  --line-gold: rgba(var(--accent-rgb), 0.4);

  /* ---- 主视觉与配图占位的底色 ---- */
  --hero-tint-1: rgba(240, 185, 11, 0.16);
  --hero-tint-2: rgba(79, 124, 255, 0.14);
  --hero-base-1: #0d1220;
  --hero-base-2: #0a0d16;
  --overlay: rgba(0, 0, 0, 0.35);
  --visual-1: linear-gradient(150deg, #1b2242, #0d111e);
  --visual-2: linear-gradient(150deg, #1f2a1f, #0d111e);
  --visual-3: linear-gradient(150deg, #2a2233, #0d111e);

  --maxw: 1180px;
  --shadow: 0 30px 70px -34px rgba(0, 0, 0, 0.9);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.65; overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.soft { background: var(--bg-soft); border-block: 1px solid var(--line); }

/* 通用零件 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px; border-radius: 10px; font-size: 15px; font-weight: 600;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-lg { padding: 14px 30px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-gold { background: linear-gradient(135deg, var(--gold), var(--gold-2)); color: var(--on-accent); }
.btn-gold:hover { box-shadow: 0 16px 34px -18px var(--gold); }
.btn-line { border: 1px solid var(--line-gold); color: var(--gold-2); background: rgba(var(--accent-rgb), 0.05); }
.btn-dark { background: #131726; color: #fff; border: 1px solid rgba(0, 0, 0, 0.25); }
.kicker { display: inline-block; margin-bottom: 12px; font-size: 12.5px; font-weight: 700; letter-spacing: 1.4px; text-transform: uppercase; color: var(--gold); }
.head { max-width: 640px; margin: 0 auto 52px; text-align: center; }
.head h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; letter-spacing: -0.6px; line-height: 1.3; }
.head p { margin-top: 12px; color: var(--dim); }
.muted { color: var(--mute); }
.fx { transition: opacity 0.7s ease, transform 0.7s ease; }
html.js .fx { opacity: 0; transform: translateY(24px); }
html.js .fx.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .fx { opacity: 1; transform: none; } html { scroll-behavior: auto; } }

/* 导航 */
.nav { position: fixed; inset: 0 0 auto; z-index: 50; transition: background 0.3s ease, border-color 0.3s ease; border-bottom: 1px solid transparent; }
.nav.is-solid { background: rgba(10, 13, 22, 0.92); border-bottom-color: var(--line); backdrop-filter: blur(14px); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 74px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 800; letter-spacing: 0.2px; }
.logo em { margin-left: 8px; font-style: normal; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 999px; background: rgba(var(--accent-rgb), 0.14); color: var(--gold-2); }
.logo-mark {
  width: 34px; height: 34px; display: grid; place-items: center; border-radius: 9px;
  background: linear-gradient(135deg, var(--gold), var(--gold-2)); color: var(--on-accent); font-weight: 900;
}
.nav-links { display: flex; gap: 28px; }
.nav-links a { font-size: 15px; color: var(--dim); }
.nav-links a:hover { color: var(--gold-2); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.link-plain { font-size: 15px; color: var(--dim); }
.burger { display: none; width: 40px; height: 40px; border: 1px solid var(--line-gold); border-radius: 10px; padding: 10px; }
.burger i { display: block; height: 2px; background: var(--gold-2); border-radius: 2px; margin: 3px 0; transition: 0.25s; }
.burger.is-open i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.burger.is-open i:nth-child(2) { opacity: 0; }
.burger.is-open i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.mobile-menu { display: none; padding: 16px 24px 22px; background: rgba(10, 13, 22, 0.97); border-bottom: 1px solid var(--line); }
.mobile-menu a { display: block; padding: 12px 0; color: var(--dim); border-bottom: 1px solid var(--line); }
.mobile-menu .btn { margin-top: 16px; border-bottom: 0; color: var(--on-accent); }
.mobile-menu.is-open { display: block; }

/* Banner */
.banner { position: relative; padding: 150px 0 0; overflow: hidden; }
.banner-media {
  position: absolute; inset: 0 0 22% 0; z-index: 0;
  background:
    radial-gradient(ellipse 55% 70% at 78% 30%, var(--hero-tint-1), transparent 62%),
    radial-gradient(ellipse 60% 60% at 12% 20%, var(--hero-tint-2), transparent 60%),
    linear-gradient(160deg, var(--hero-base-1), var(--hero-base-2) 70%);
  border-bottom: 1px solid var(--line-gold);
  display: grid; align-items: center; justify-items: end;
  padding-right: 9%;
}
.banner-media::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px; opacity: 0.5;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000, transparent 78%);
}
.media-label { position: absolute; top: 100px; right: 9%; font-size: 12.5px; color: var(--mute); letter-spacing: 0.4px; text-align: right; }
.play {
  position: relative; z-index: 1; width: 84px; height: 84px; border-radius: 50%;
  border: 1px solid var(--line-gold); background: rgba(var(--accent-rgb), 0.08);
  display: grid; place-items: center; transition: transform 0.25s ease, background 0.25s ease;
}
.play:hover { transform: scale(1.06); background: rgba(var(--accent-rgb), 0.16); }
.play span { width: 0; height: 0; margin-left: 6px; border-left: 18px solid var(--gold-2); border-block: 12px solid transparent; }

.banner-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: end; }
.banner-copy { padding-bottom: 96px; }
.tag { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px; font-size: 12.5px; font-weight: 600; color: var(--gold-2); background: rgba(var(--accent-rgb), 0.1); border: 1px solid var(--line-gold); }
.banner-copy h1 { margin: 22px 0 18px; font-size: clamp(32px, 5vw, 58px); font-weight: 900; line-height: 1.14; letter-spacing: -1.4px; }
.banner-copy p { max-width: 560px; color: var(--dim); font-size: 17px; }
.banner-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.banner-meta { display: flex; flex-wrap: wrap; gap: 34px; margin-top: 38px; padding-top: 24px; border-top: 1px solid var(--line); }
.banner-meta strong { display: block; font-size: 26px; font-weight: 900; letter-spacing: -0.6px; color: var(--gold-2); }
.banner-meta span { font-size: 13px; color: var(--mute); }

/* 悬浮下载卡 */
.download-card {
  align-self: end; transform: translateY(52px);
  padding: 26px; border-radius: 20px;
  background: linear-gradient(170deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-gold); box-shadow: var(--shadow);
}
.dc-head { display: flex; align-items: center; gap: 12px; }
.dc-logo { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 12px; background: linear-gradient(135deg, var(--gold), var(--gold-2)); color: var(--on-accent); font-weight: 900; font-size: 20px; }
.dc-head strong { display: block; font-size: 16px; }
.dc-head span { font-size: 12.5px; color: var(--mute); }
.dc-screen { margin: 20px 0; padding: 16px; border-radius: 14px; background: var(--overlay); border: 1px solid var(--line); }
.dc-row { display: flex; align-items: center; justify-content: space-between; font-size: 14px; color: var(--dim); }
.dc-row + .dc-row { margin-top: 8px; }
.dc-row b { color: var(--text); font-size: 16px; }
.dc-row .up { color: var(--up); }
.dc-bars { display: flex; align-items: flex-end; gap: 6px; height: 64px; margin-top: 16px; }
.dc-bars i { flex: 1; border-radius: 4px 4px 0 0; background: linear-gradient(180deg, var(--gold-2), rgba(var(--accent-rgb), 0.2)); }
.dc-actions { display: grid; gap: 10px; }
.dc-note { margin-top: 12px; font-size: 12px; color: var(--mute); text-align: center; }

/* 数据滚动条 */
.ticker { overflow: hidden; border-block: 1px solid var(--line-gold); background: rgba(var(--accent-rgb), 0.05); }
.ticker-track { display: flex; gap: 42px; width: max-content; padding: 14px 0; animation: slide 32s linear infinite; }
.ticker-track span { font-size: 13.5px; color: var(--gold-2); white-space: nowrap; }
@keyframes slide { to { transform: translateX(-50%); } }

/* 图文交替 */
.alt { padding: 96px 0 40px; }
.alt-row { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; padding: 46px 0; }
.alt-row.reverse .alt-copy { order: 2; }
.alt-copy h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; letter-spacing: -0.5px; line-height: 1.3; }
.alt-copy p { margin-top: 14px; color: var(--dim); }
.bullets { display: grid; gap: 10px; margin-top: 20px; }
.bullets li { position: relative; padding-left: 22px; color: var(--dim); font-size: 15px; }
.bullets li::before { content: ""; position: absolute; left: 0; top: 9px; width: 8px; height: 8px; border-radius: 2px; background: linear-gradient(135deg, var(--gold), var(--gold-2)); }
.text-link { display: inline-block; margin-top: 22px; font-weight: 600; color: var(--gold-2); }
.alt-visual {
  position: relative; aspect-ratio: 4 / 3; border-radius: 20px; overflow: hidden;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  display: grid; place-items: center;
}
.alt-visual::after { content: ""; position: absolute; inset: 0; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 34px 34px; opacity: 0.55; }
.alt-visual figcaption { position: relative; z-index: 1; font-size: 13px; color: rgba(255, 255, 255, 0.72); padding: 8px 16px; border-radius: 999px; border: 1px solid var(--line); background: rgba(0, 0, 0, 0.4); }
.alt-visual.v1 { background: var(--visual-1); }
.alt-visual.v2 { background: var(--visual-2); }
.alt-visual.v3 { background: var(--visual-3); }

/* 功能模块 */
.mod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.mod { padding: 28px 24px; border-radius: 16px; background: var(--panel); border: 1px solid var(--line); transition: transform 0.25s ease, border-color 0.25s ease; }
.mod:hover { transform: translateY(-6px); border-color: var(--line-gold); }
.mod-ico { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; background: rgba(var(--accent-rgb), 0.12); color: var(--gold-2); font-size: 18px; }
.mod h3 { margin: 16px 0 8px; font-size: 17px; }
.mod p { font-size: 14.5px; color: var(--dim); }

/* 价格表 */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.plan { position: relative; padding: 34px 28px; border-radius: 18px; background: var(--panel); border: 1px solid var(--line); display: flex; flex-direction: column; }
.plan.featured { border-color: var(--line-gold); background: linear-gradient(170deg, var(--panel-2), var(--panel)); box-shadow: var(--shadow); transform: translateY(-10px); }
.ribbon { position: absolute; top: -13px; left: 28px; padding: 4px 12px; border-radius: 999px; font-size: 12px; font-weight: 700; color: var(--on-accent); background: linear-gradient(135deg, var(--gold), var(--gold-2)); }
.plan h3 { font-size: 18px; }
.price { margin: 18px 0 20px; display: flex; align-items: baseline; gap: 8px; }
.price b { font-size: 40px; font-weight: 900; letter-spacing: -1.2px; }
.plan.featured .price b { color: var(--gold-2); }
.price span { font-size: 13px; color: var(--mute); }
.plan ul { display: grid; gap: 12px; margin-bottom: 26px; }
.plan li { position: relative; padding-left: 22px; font-size: 14.5px; color: var(--dim); }
.plan li::before { content: "✓"; position: absolute; left: 0; color: var(--gold-2); font-weight: 700; }
.plan .btn { margin-top: auto; }

/* 评价 */
.voices { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.voice { padding: 30px; border-radius: 18px; background: var(--panel); border: 1px solid var(--line); }
.voice p { font-size: 16px; color: var(--dim); }
.voice footer { display: flex; align-items: center; gap: 12px; margin-top: 22px; }
.avatar { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: rgba(var(--accent-rgb), 0.14); color: var(--gold-2); font-weight: 700; }
.voice strong { display: block; font-size: 15px; }
.voice em { font-style: normal; font-size: 12.5px; color: var(--mute); }

/* CTA */
.cta { padding: 0; background: linear-gradient(120deg, var(--gold), var(--gold-2)); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; padding-block: 54px; }
.cta h2 { font-size: clamp(24px, 3.2vw, 34px); font-weight: 900; color: var(--on-accent); letter-spacing: -0.6px; }
.cta p { margin-top: 10px; color: rgba(var(--on-accent-rgb), 0.75); }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* 页脚 */
.footer { padding: 60px 0 30px; background: var(--bg); border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 32px; }
.footer h4 { margin-bottom: 14px; font-size: 14px; }
.footer ul { display: grid; gap: 10px; }
.footer ul a { font-size: 14px; color: var(--dim); }
.footer ul a:hover { color: var(--gold-2); }
.footer-grid p { margin-top: 14px; font-size: 14px; max-width: 320px; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--mute); }

/* 响应式 */
@media (max-width: 1024px) {
  .nav-links, .link-plain { display: none; }
  .burger { display: block; }
  .play, .media-label { display: none; }
  .banner-inner { grid-template-columns: 1fr; gap: 34px; }
  .banner-copy { padding-bottom: 0; }
  .download-card { transform: none; margin-bottom: 60px; }
  .banner { padding-top: 120px; }
  .mod-grid { grid-template-columns: repeat(2, 1fr); }
  .plans { grid-template-columns: 1fr; }
  .plan.featured { transform: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 820px) {
  .section { padding: 68px 0; }
  .alt-row, .alt-row.reverse { grid-template-columns: 1fr; gap: 26px; }
  .alt-row.reverse .alt-copy { order: 0; }
  .voices { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .wrap { padding: 0 18px; }
  .banner-meta { gap: 22px; }
  .banner-meta strong { font-size: 22px; }
  .mod-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .media-label { top: 84px; font-size: 11.5px; }
}

/* ===== 风格 A · 黑金（默认） ===== */
:root {
  --bg: #0a0d16; --bg-soft: #0d111e; --panel: #12172a; --panel-2: #171d33;
  --line: rgba(255, 255, 255, 0.09);
  --text: #f2f4fa; --dim: #a8b0c4; --mute: #737d95;
  --gold: #f0b90b; --gold-2: #f8d43b;
  --accent-rgb: 240, 185, 11; --on-accent: #1a1405; --on-accent-rgb: 26, 20, 5;
  --line-gold: rgba(240, 185, 11, 0.4);
  --hero-tint-1: rgba(240, 185, 11, 0.16); --hero-tint-2: rgba(79, 124, 255, 0.14);
  --hero-base-1: #0d1220; --hero-base-2: #0a0d16;
  --overlay: rgba(0, 0, 0, 0.35);
  --visual-1: linear-gradient(150deg, #1b2242, #0d111e);
  --visual-2: linear-gradient(150deg, #1f2a1f, #0d111e);
  --visual-3: linear-gradient(150deg, #2a2233, #0d111e);
  --up: #2fd68a; --down: #ff6b81;
}

/* =========================================================
   Mobile / desktop responsive fixes (appended)
   1) anchor jump offset under sticky header
   2) larger touch targets for nav & footer links
   3) 16px form controls to avoid iOS focus zoom
   ========================================================= */
:where(section, article, div, main)[id] {
  scroll-margin-top: 92px;
}

@media (max-width: 900px) {
  .mobile-nav a,
  .mobile-menu a,
  #mobile a,
  #dockMobile a,
  .menu a {
    min-height: 46px;
    display: flex;
    align-items: center;
  }

  .mobile-nav a + a,
  .mobile-menu a + a,
  #mobile a + a,
  #dockMobile a + a {
    border-top: 1px solid rgba(127, 127, 127, 0.18);
  }

  footer a,
  .footer a,
  .footer-grid a,
  .footer-links a,
  .site-footer a {
    min-height: 42px;
    display: inline-flex;
    align-items: center;
  }

  input,
  select,
  textarea {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  footer a,
  .footer a,
  .footer-grid a,
  .footer-links a,
  .site-footer a {
    min-height: 40px;
  }
}
/* force 16px form controls on small screens (prevents iOS focus zoom) */
@media (max-width: 900px) {
  input, select, textarea { font-size: 16px !important; }
}

/* ===== 变体 F · 蔚蓝 (AurumX) ===== */
html:root {
  --gold: #3b82f6;
  --gold-2: #60a5fa;
  --accent-rgb: 59, 130, 246;
  --on-accent: #081020;
  --on-accent-rgb: 8, 16, 32;
  --line-gold: rgba(59, 130, 246, 0.4);
  --hero-tint-1: rgba(59, 130, 246, 0.16);
  --hero-tint-2: rgba(96, 165, 250, 0.14);
}

/* ===== 手机端两列优化：功能模块（4 张卡 = 2 列 2 行） ===== */
@media (max-width: 520px) {
  #modules .mod-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  #modules .mod { padding: 20px 16px; }
  #modules .mod h3 { font-size: 15.5px; }
  #modules .mod p { font-size: 13.5px; }
}

/* ===== 手机端页脚紧凑版：产品 各占一行（标题与链接同行） ===== */
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: 14px; }
  .footer .footer-bottom { margin-top: 16px; padding-top: 10px; gap: 6px 14px; }
  .footer .footer-bottom a { min-height: 0; }
  .footer-grid > div + div {
    display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px;
    padding-top: 12px; border-top: 1px solid rgba(128, 128, 128, 0.18);
  }
  .footer-grid > div + div h4 { margin: 0 8px 0 0; font-size: 13.5px; }
  .footer-grid > div + div ul { display: flex; flex-wrap: wrap; gap: 6px 14px; margin: 0; }
  .footer-grid > div + div ul li { margin: 0; }
  .footer-grid > div + div ul a { font-size: 13px; }
}

/* ===== 手机端：收紧图文区上方的空白（原来顶部留白约 167px） ===== */
@media (max-width: 1024px) {
  .alt { padding: 36px 0 18px; }
  .alt-row { padding: 28px 0; }
}

/* ===== 手机端整体压缩（方案A）：区块间距统一 40px ===== */
@media (max-width: 1024px) {
  .section { padding: 40px 0; }
  .alt { padding: 30px 0 16px; }
  .alt-row { padding: 24px 0; }
  .footer { padding: 40px 0 22px; }
}

/* ===== H1 上提：收紧首屏上方留白（顶部需给固定导航留出空间） ===== */
.banner { padding-top: 100px; }
.banner-copy h1 { margin-top: 0; }
@media (max-width: 1024px) { .banner { padding-top: 84px; } }

/* ===== 桌面端区块间距压缩（原来 96px，现 48px） ===== */
@media (min-width: 1025px) {
  .section { padding: 48px 0; }
  .alt { padding: 48px 0 26px; }
  .alt-row { padding: 30px 0; }
  .footer { padding: 44px 0 24px; }
}

/* ===== 导航下载按钮缩小 ===== */
.nav-cta .btn-gold { padding: 9px 18px; font-size: 14px; }

/* ===== 下载按钮「下载」两字保持左右排列，不换行 ===== */
.nav-cta .btn-gold { white-space: nowrap; }

/* ===== 手机端：删除首屏与数据条之间的多余空白 ===== */
@media (max-width: 1024px) {
  .download-card { margin-bottom: 24px; }
}