@charset "UTF-8";

/* =========================================================
   泰圈 TAIQUAN — 单页下载站样式
   配色：亮色纸感底 + 标志蓝 #17A2DE + 泰国金 #E4A93F
   ========================================================= */

:root {
  --ink: #0c2231;
  --ink-2: #245063;
  --muted: #5d7889;
  --muted-2: #8399a7;
  --brand: #17a2de;
  --brand-deep: #0b7cb4;
  --brand-soft: #e4f3fb;
  --gold: #e4a93f;
  --gold-soft: #fdf4e1;
  --line: #dde8f0;
  --bg: #f3f8fb;
  --tint: #edf5fa;
  --white: #ffffff;
  --radius-lg: 24px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(12, 34, 49, 0.05);
  --shadow-md: 0 18px 44px -24px rgba(12, 34, 49, 0.32);
  --shadow-lg: 0 34px 70px -32px rgba(12, 34, 49, 0.45);
  --sans: "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --max: 1180px;
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: auto; /* 不使用自动滚动 */
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 800; letter-spacing: -0.015em; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 10px 18px;
  background: var(--ink);
  color: #fff;
  z-index: 90;
  border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; }

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- 通用小元素 ---------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brand-deep);
}
.eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  flex: none;
}
.eyebrow-light { color: #9fd8f2; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 50px;
  padding: 0 30px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 0.18s ease, background-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--ink);
  color: #fff;
  box-shadow: 0 14px 26px -16px rgba(12, 34, 49, 0.75);
}
.btn-primary:hover { background: var(--brand-deep); transform: translateY(-2px); }

.btn-ghost {
  background: transparent;
  border-color: rgba(12, 34, 49, 0.18);
  color: var(--ink);
}
.btn-ghost:hover {
  border-color: var(--brand);
  color: var(--brand-deep);
  background: rgba(23, 162, 222, 0.06);
  transform: translateY(-2px);
}

.btn-sun {
  background: var(--gold);
  color: #2b1c05;
  box-shadow: 0 16px 30px -16px rgba(228, 169, 63, 0.85);
}
.btn-sun:hover { background: #f2b851; transform: translateY(-2px); }

.btn-sm { min-height: 42px; padding: 0 22px; font-size: 14px; }
.btn-block { width: 100%; }

/* ---------- 顶部导航 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(243, 248, 251, 0.86);
  backdrop-filter: saturate(150%) blur(14px);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px -26px rgba(12, 34, 49, 0.6);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 26px;
  min-height: 78px;
}

.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 8px 18px -12px rgba(23, 162, 222, 0.9);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-text strong { font-size: 19px; font-weight: 800; letter-spacing: 0.04em; }
.brand-text em {
  font-style: normal;
  font-size: 9.5px;
  letter-spacing: 0.26em;
  color: var(--muted-2);
  margin-top: 3px;
}

.nav { display: flex; align-items: center; gap: 30px; margin-left: auto; }
.nav a {
  position: relative;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink-2);
  padding: 6px 0;
  transition: color 0.18s ease;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--brand);
  transition: width 0.22s ease;
}
.nav a:hover { color: var(--brand-deep); }
.nav a:hover::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 12px; flex: none; }

.nav-toggle {
  position: relative;
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  position: absolute;
  left: 50%;
  width: 18px;
  height: 2px;
  border-radius: 1px;
  background: var(--ink);
  transform: translateX(-50%);
  transition: top 0.22s ease, transform 0.22s ease, opacity 0.18s ease;
}
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }
body.nav-open .nav-toggle span:nth-child(1) { top: 21px; transform: translateX(-50%) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { top: 21px; transform: translateX(-50%) rotate(-45deg); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 54px;
  background:
    radial-gradient(760px 460px at 88% 4%, rgba(23, 162, 222, 0.14), transparent 68%),
    radial-gradient(620px 420px at 6% 84%, rgba(228, 169, 63, 0.13), transparent 70%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, rgba(12, 34, 49, 0.045) 0 1px, transparent 1px 96px);
  -webkit-mask-image: linear-gradient(180deg, #000 0, rgba(0, 0, 0, 0.35) 62%, transparent 94%);
  mask-image: linear-gradient(180deg, #000 0, rgba(0, 0, 0, 0.35) 62%, transparent 94%);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 40px;
  align-items: center;
  min-height: 600px;
}

.hero-title {
  font-size: clamp(56px, 7.4vw, 96px);
  line-height: 0.94;
  letter-spacing: 0.01em;
  margin: 0 0 6px;
}
.hero-title::after {
  content: "";
  display: block;
  width: 74px;
  height: 5px;
  margin-top: 18px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--gold), rgba(228, 169, 63, 0));
}
.hero-sub {
  margin: 16px 0 0;
  font-size: clamp(17px, 1.7vw, 21px);
  font-weight: 700;
  color: var(--brand-deep);
  letter-spacing: 0.04em;
}
.hero-lede {
  max-width: 540px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.9;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.hero-note { margin: 14px 0 0; font-size: 13px; color: var(--muted-2); letter-spacing: 0.02em; }

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 38px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.hero-stats li {
  flex: 1 1 0;
  min-width: 110px;
  padding-right: 18px;
}
.hero-stats li + li { padding-left: 22px; border-left: 1px solid var(--line); }
.hero-stats strong {
  display: block;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.hero-stats strong sup { font-size: 13px; color: var(--brand); }
.hero-stats span { display: block; font-size: 12.5px; color: var(--muted); margin-top: 2px; }

.hero-visual { position: relative; height: 590px; }
.hero-visual::before {
  content: "";
  position: absolute;
  right: -60px;
  top: 54px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(23, 162, 222, 0.2), transparent 66%);
  z-index: 0;
}
.hero-visual::after {
  content: "";
  position: absolute;
  left: -34px;
  bottom: 4px;
  width: 168px;
  height: 168px;
  border-radius: 50%;
  border: 1px solid rgba(228, 169, 63, 0.4);
  z-index: 0;
}

.phone {
  position: absolute;
  overflow: hidden;
  border-radius: 26px;
  border: 1px solid rgba(255, 255, 255, 0.9);
  background: #0c2231;
  box-shadow: var(--shadow-lg);
}
.phone img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }

.phone-front {
  left: 52%;
  top: 26px;
  width: 250px;
  height: 526px;
  transform: translateX(-50%) rotate(-2.4deg);
  z-index: 3;
}
.phone-back2 {
  right: -18px;
  top: 100px;
  width: 196px;
  height: 396px;
  transform: rotate(9deg);
  z-index: 1;
}

.mini-card {
  position: absolute;
  left: -10px;
  bottom: 62px;
  z-index: 4;
  width: 214px;
  padding: 18px 18px 16px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 24px 48px -26px rgba(12, 34, 49, 0.5);
  transform: rotate(-2deg);
}
.mini-card-label {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand-deep);
}
.mini-card h3 { font-size: 19px; margin: 7px 0 3px; }
.mini-card p { margin: 0; font-size: 12.5px; color: var(--muted); }
.mini-progress {
  display: block;
  height: 4px;
  border-radius: 2px;
  background: #eaf3f9;
  margin-top: 13px;
  overflow: hidden;
}
.mini-progress i {
  display: block;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--brand), var(--gold));
}

.float-tag {
  position: absolute;
  z-index: 5;
  padding: 8px 15px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 12px 26px -18px rgba(12, 34, 49, 0.55);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink-2);
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.float-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
}
.float-tag-a { top: 66px; left: -18px; }
.float-tag-b { top: 2px; right: 20px; }
.float-tag-b::before { background: var(--gold); }

/* ---------- 能力条 ---------- */

.strip {
  background: var(--ink);
  color: #cfe3ef;
}
.strip-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 28px;
  font-size: 13px;
  letter-spacing: 0.08em;
}
.strip-inner span:not(.strip-sep) { white-space: nowrap; }
.strip-sep { color: rgba(207, 227, 239, 0.35); }

/* ---------- 区块通用 ---------- */

.section { padding: 92px 0; scroll-margin-top: 92px; }
.section-tint { background: var(--tint); }

.section-head { max-width: 680px; margin-bottom: 46px; }
.section-head h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  line-height: 1.25;
}
.section-desc {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}
.section-head-split {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px 40px;
  max-width: none;
  margin-bottom: 42px;
}
.section-head-split .section-desc { max-width: 340px; margin: 0; text-align: right; }

/* ---------- 界面预览 ---------- */

.preview-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 20px;
}
.preview-card { margin: 0; }
.preview-frame {
  position: relative;
  aspect-ratio: 9 / 19;
  border-radius: 20px;
  overflow: hidden;
  background: #0c2231;
  border: 1px solid rgba(12, 34, 49, 0.08);
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.preview-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}
.preview-card:hover .preview-frame {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.preview-tag {
  display: inline-block;
  margin: 16px 0 8px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-deep);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
}
.preview-card h3 { font-size: 16px; margin-bottom: 6px; }
.preview-card figcaption p { margin: 0; font-size: 13px; line-height: 1.7; color: var(--muted); }

/* ---------- 频道分区 ---------- */

.channel-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.channel-card {
  position: relative;
  padding: 28px 26px 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
  overflow: hidden;
}
.channel-card::after {
  content: "";
  position: absolute;
  right: -26px;
  top: -26px;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(228, 169, 63, 0.18), transparent 70%);
  opacity: 0;
  transition: opacity 0.25s ease;
}
.channel-card:hover {
  transform: translateY(-4px);
  border-color: rgba(23, 162, 222, 0.45);
  box-shadow: var(--shadow-md);
}
.channel-card:hover::after { opacity: 1; }

.channel-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 13px;
  background: var(--brand-soft);
  color: var(--brand-deep);
  margin-bottom: 16px;
}
.channel-icon svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.channel-card h3 { font-size: 18px; margin-bottom: 8px; }
.channel-card p { margin: 0 0 16px; font-size: 13.5px; line-height: 1.8; color: var(--muted); }
.channel-meta {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--gold);
  text-transform: uppercase;
}

/* ---------- 追剧体验 ---------- */

.features-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  gap: 64px;
  align-items: start;
}
.features-intro { position: sticky; top: 116px; }
.features-intro h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.28; }
.features-intro .section-desc { max-width: 360px; }
.features-intro .btn { margin-top: 26px; }

.feature-list { border-top: 1px solid var(--line); }
.feature-list li {
  display: flex;
  gap: 22px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.feature-num {
  flex: none;
  width: 44px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--gold);
  padding-top: 5px;
}
.feature-list h3 { font-size: 18px; margin-bottom: 8px; }
.feature-list p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.85; }

/* ---------- 人气榜 ---------- */

.rank-board {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
  gap: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.rank-list { padding: 10px 34px; }
.rank-row {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.rank-row:last-child { border-bottom: 0; }
.rank-index {
  flex: none;
  width: 40px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--muted-2);
}
.rank-row:first-child .rank-index { color: var(--gold); }
.rank-main { flex: 1 1 auto; min-width: 0; }
.rank-main h3 {
  font-size: 17px;
  margin-bottom: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rank-main p { margin: 0; font-size: 12.5px; color: var(--muted); }
.rank-heat {
  flex: none;
  display: flex;
  align-items: center;
  gap: 12px;
}
.rank-bar {
  display: block;
  width: 108px;
  height: 5px;
  border-radius: 3px;
  background: #e8f1f6;
  overflow: hidden;
}
.rank-bar i {
  display: block;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--brand), var(--gold));
}
.rank-heat em { font-style: normal; font-size: 12.5px; font-weight: 700; color: var(--ink-2); }

.rank-side {
  padding: 40px 36px;
  background: linear-gradient(160deg, #0c2231, #113a50);
  color: #e6f1f7;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.rank-side-label {
  margin: 0 0 16px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #8fc9e4;
}
.rank-side-text {
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.9;
  color: #d6e8f1;
}
.rank-side .btn-ghost {
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
}
.rank-side .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
}

/* ---------- 引语带 ---------- */

.quote-band {
  position: relative;
  padding: 70px 0;
  background: var(--brand-soft);
  overflow: hidden;
}
.quote-band::before {
  content: "";
  position: absolute;
  left: -80px;
  top: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  border: 1px solid rgba(23, 162, 222, 0.28);
}
.quote-band::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -120px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(228, 169, 63, 0.2), transparent 70%);
}
.quote-inner { position: relative; max-width: 820px; text-align: center; }
.quote-mark {
  display: block;
  font-size: 54px;
  line-height: 0.5;
  color: rgba(11, 124, 180, 0.35);
  margin-bottom: 18px;
}
.quote-inner blockquote {
  margin: 0;
  font-size: clamp(18px, 2.2vw, 25px);
  line-height: 1.75;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.quote-by { margin: 20px 0 0; font-size: 13px; color: var(--brand-deep); letter-spacing: 0.06em; }

/* ---------- 更新手记 ---------- */

.notes-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.note-card {
  padding: 26px 26px 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}
.note-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.note-date {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--muted-2);
}
.note-card h3 { font-size: 17px; margin: 10px 0 8px; }
.note-card p { margin: 0 0 16px; font-size: 13.5px; line-height: 1.8; color: var(--muted); }
.note-link {
  font-size: 13px;
  font-weight: 700;
  color: var(--brand-deep);
  border-bottom: 1px solid rgba(23, 162, 222, 0.4);
  padding-bottom: 2px;
}
.note-link:hover { color: var(--ink); border-bottom-color: var(--gold); }

/* ---------- 关于 ---------- */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 60px;
  align-items: start;
}
.about-copy h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.3; }
.about-copy p { color: var(--muted); font-size: 14.5px; line-height: 1.95; margin: 18px 0 0; }

.about-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 8px;
}
.about-list li {
  padding: 22px 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  border-left: 3px solid var(--brand);
}
.about-list strong { display: block; font-size: 16px; margin-bottom: 5px; }
.about-list span { font-size: 13.5px; color: var(--muted); line-height: 1.75; }

/* ---------- 下载区 ---------- */

.download {
  position: relative;
  overflow: hidden;
  padding: 74px 0;
  background: linear-gradient(150deg, #08161f, #0e3448 62%, #12435c);
  color: #eaf5fb;
  scroll-margin-top: 92px;
}
.download-glow {
  position: absolute;
  right: -140px;
  top: -160px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(23, 162, 222, 0.42), transparent 66%);
  pointer-events: none;
}
.download-inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.download-copy h2 { font-size: clamp(26px, 3.2vw, 38px); line-height: 1.3; color: #fff; }
.download-copy p { margin: 14px 0 0; max-width: 520px; font-size: 14.5px; line-height: 1.85; color: #a9c9d9; }
.download-action { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.download-action .btn { min-height: 56px; padding: 0 46px; font-size: 16px; }
.download-note { font-size: 12.5px; color: #93b6c7; letter-spacing: 0.03em; }

/* ---------- FAQ ---------- */

.faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 56px;
  align-items: start;
}
.faq-intro { position: sticky; top: 116px; }
.faq-intro h2 { font-size: clamp(26px, 3.1vw, 36px); line-height: 1.32; }
.faq-intro .section-desc { max-width: 330px; }

.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 4px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
  transition: color 0.18s ease;
}
.faq-question:hover { color: var(--brand-deep); }
.faq-question:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

.faq-icon {
  position: relative;
  flex: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--line);
  transition: background-color 0.22s ease, border-color 0.22s ease, transform 0.22s ease;
}
.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 1.5px;
  background: var(--ink-2);
  transform: translate(-50%, -50%);
  transition: transform 0.22s ease, background-color 0.22s ease;
}
.faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-item.open .faq-icon { background: var(--brand); border-color: var(--brand); }
.faq-item.open .faq-icon::before { background: #fff; }
.faq-item.open .faq-icon::after { background: #fff; transform: translate(-50%, -50%) rotate(0deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.32s cubic-bezier(0.4, 0, 0.2, 1);
}
.faq-answer p {
  margin: 0;
  padding: 0 40px 24px 4px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted);
}

/* ---------- 页脚 ---------- */

.site-footer {
  background: var(--white);
  border-top: 1px solid var(--line);
  padding-top: 58px;
}
.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.7fr) minmax(0, 0.7fr);
  gap: 40px;
  padding-bottom: 44px;
}
.brand-footer { margin-bottom: 16px; }
.footer-line { margin: 0 0 10px; font-size: 14px; color: var(--ink-2); font-weight: 600; }
.footer-note { margin: 0; max-width: 380px; font-size: 12.5px; line-height: 1.8; color: var(--muted-2); }

.footer-col h4 {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted-2);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--ink-2);
  padding: 5px 0;
  transition: color 0.18s ease;
}
.footer-col a:hover { color: var(--brand-deep); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 20px 28px 26px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--muted);
}
.footer-bottom-right { color: var(--muted-2); letter-spacing: 0.06em; }

/* ---------- 响应式 ---------- */

@media (max-width: 1120px) {
  .hero-visual { height: 540px; }
  .phone-front { width: 226px; height: 480px; }
  .phone-back2 { width: 180px; height: 366px; top: 94px; right: -10px; }
  .mini-card { width: 196px; bottom: 46px; padding: 15px 16px 14px; }
  .nav { gap: 22px; }
}

@media (max-width: 980px) {
  .wrap { padding: 0 22px; }
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    min-height: 0;
  }
  .hero { padding: 26px 0 40px; }
  .hero-copy { order: 1; }
  .hero-visual {
    order: 2;
    height: 502px;
    margin-top: 22px;
    max-width: 560px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
  }
  .phone-front { width: 232px; height: 488px; top: 8px; left: 52%; }
  .phone-back2 { width: 170px; height: 350px; top: 78px; right: -8px; }
  .mini-card { width: 180px; bottom: 18px; left: 0; padding: 14px 15px 13px; }
  .mini-card h3 { font-size: 17px; }
  .float-tag-a { top: 36px; left: -6px; }
  .float-tag-b { top: 0; right: 26px; }

  .nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-header { position: sticky; }
  .header-inner { min-height: 70px; gap: 14px; }
  .nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    padding: 6px 22px 16px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 26px 40px -30px rgba(12, 34, 49, 0.6);
    max-height: calc(100vh - 70px);
    overflow-y: auto;
  }
  .nav.is-open a {
    padding: 13px 0;
    border-bottom: 1px solid var(--line);
    font-size: 15px;
  }
  .nav.is-open a::after { display: none; }

  .preview-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .channel-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .features-grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .features-intro { position: static; }
  .rank-board { grid-template-columns: minmax(0, 1fr); }
  .rank-side { padding: 32px 30px; }
  .notes-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-grid { grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .faq-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .faq-intro { position: static; }
  .section-head-split .section-desc { text-align: left; }
  .footer-inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
  .section { padding: 68px 0; }
  .quote-band { padding: 56px 0; }
  .download { padding: 56px 0; }
}

@media (max-width: 700px) {
  .header-cta { display: none; }
  .hero-title { font-size: clamp(48px, 13vw, 68px); }
  .hero-stats li { padding-right: 12px; }
  .hero-stats li + li { padding-left: 14px; }
  .hero-stats strong { font-size: 21px; }
  .hero-note { font-size: 12px; }
  .preview-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .channel-grid { grid-template-columns: minmax(0, 1fr); }
  .notes-grid { grid-template-columns: minmax(0, 1fr); }
  .rank-list { padding: 6px 22px; }
  .rank-row { flex-wrap: wrap; gap: 8px 14px; }
  .rank-heat { width: 100%; justify-content: space-between; padding-left: 54px; }
  .rank-bar { flex: 1 1 auto; width: auto; max-width: 180px; }
  .strip-inner { font-size: 12px; gap: 8px; padding: 14px 22px; }
  .section-head { margin-bottom: 32px; }
  .faq-answer p { padding-right: 8px; }
  .download-action { width: 100%; align-items: stretch; text-align: center; }
  .download-action .btn { width: 100%; }
  .download-note { text-align: center; }
  .footer-bottom { justify-content: center; text-align: center; }
}

@media (max-width: 480px) {
  .hero-visual { height: 430px; }
  .phone-front { width: 184px; height: 392px; top: 8px; }
  .phone-back2 { width: 124px; height: 258px; top: 62px; right: -10px; }
  .mini-card { width: 150px; padding: 12px 13px 11px; bottom: 24px; }
  .mini-card h3 { font-size: 15px; }
  .mini-card-label { font-size: 9.5px; }
  .float-tag-a { display: none; }
  .float-tag-b { right: 10px; font-size: 11.5px; padding: 6px 12px; }
  .preview-grid { grid-template-columns: minmax(0, 1fr); }
  .hero-actions .btn { flex: 1 1 100%; }
  .footer-inner { grid-template-columns: minmax(0, 1fr); gap: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.001s !important; animation-duration: 0.001s !important; }
}