/* ============================================================
   WPS Office 安全下载站 · 站点一（根域名）
   设计方向：商务专业蓝 · 居中式主视觉 · 时间线功能介绍
   ============================================================ */

:root {
  --primary: #0B5FFF;
  --primary-dark: #0A4FD6;
  --primary-tint: #EAF1FF;
  --navy: #0B1F3A;
  --text-main: #14213D;
  --text-secondary: #4B5872;
  --text-muted: #8A93A6;
  --bg-page: #FFFFFF;
  --bg-alt: #F5F7FA;
  --border: #E1E6ED;
  --teal: #0EA5A5;
  --gold: #F5A623;
  --red: #E5484D;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 10px rgba(11, 31, 58, 0.05);
  --shadow-md: 0 12px 32px rgba(11, 31, 58, 0.09);
  --shadow-lg: 0 22px 55px rgba(11, 31, 58, 0.14);
  --header-h: 76px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--text-main);
  background: var(--bg-page);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img, svg { display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

main { display: block; }

section { padding: 96px 0; }

.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  background: var(--primary-tint);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  margin-bottom: 18px;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}

.section-desc { font-size: 16px; color: var(--text-secondary); }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 16px;
  padding: 14px 30px;
  border-radius: var(--radius-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn svg { width: 20px; height: 20px; }

.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 10px 24px rgba(11, 95, 255, 0.28); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 14px 30px rgba(11, 95, 255, 0.34); }

.btn-outline { background: #fff; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary-tint); transform: translateY(-2px); }

.btn-ghost { background: var(--bg-alt); color: var(--navy); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--border); }

.btn:disabled { opacity: 0.75; cursor: not-allowed; transform: none !important; }

.btn-block { width: 100%; }

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* ---------------- 顶部导航 ---------------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
  z-index: 999;
}

.nav-wrap {
  max-width: 1180px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 800; color: var(--navy); }
.brand svg { width: 34px; height: 34px; }

.nav-links { display: flex; align-items: center; gap: 6px; }

.nav-link {
  position: relative;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: 6px;
}
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 18px; right: 18px; bottom: 2px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
}

.nav-right { display: flex; align-items: center; gap: 14px; }

.nav-cta {
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 18px rgba(11, 95, 255, 0.25);
}
.nav-cta:hover { background: var(--primary-dark); }

main { padding-top: var(--header-h); }

/* ---------------- Hero ---------------- */
.hero {
  background: linear-gradient(180deg, var(--primary-tint) 0%, #ffffff 60%);
  padding: 88px 0 60px;
  text-align: center;
}

.hero-title {
  font-size: 50px;
  font-weight: 800;
  color: var(--navy);
  line-height: 1.2;
  letter-spacing: -1px;
  max-width: 880px;
  margin: 0 auto 22px;
}
.hero-title em { color: var(--primary); font-style: normal; }

.hero-sub {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 36px;
}

.hero-cta-row { display: flex; flex-direction: column; align-items: center; gap: 14px; margin-bottom: 40px; }

.hero-meta { display: flex; gap: 18px; flex-wrap: wrap; justify-content: center; font-size: 13px; color: var(--text-muted); }
.hero-meta strong { color: var(--navy); }

.trust-bar { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; margin-bottom: 56px; }

.trust-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 9px 18px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
}
.trust-chip svg { width: 18px; height: 18px; color: var(--teal); }

.float-cards { position: relative; max-width: 620px; height: 220px; margin: 0 auto; }
.float-card {
  position: absolute;
  width: 190px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 18px;
  text-align: left;
}
.float-card .fc-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 10px;
}
.float-card .fc-icon svg { width: 22px; height: 22px; }
.float-card .fc-title { font-size: 14px; font-weight: 700; color: var(--navy); margin-bottom: 4px; }
.float-card .fc-line { height: 6px; border-radius: 3px; background: var(--bg-alt); margin-top: 6px; }
.float-card.fc-1 { left: 0; top: 30px; transform: rotate(-6deg); z-index: 2; }
.float-card.fc-2 { left: 210px; top: 0; transform: rotate(2deg); z-index: 3; }
.float-card.fc-3 { left: 420px; top: 40px; transform: rotate(7deg); z-index: 1; }

/* ---------------- 核心亮点 ---------------- */
.highlight-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.highlight-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  text-align: left;
  border-top: 3px solid transparent;
  transition: all 0.25s ease;
}
.highlight-card:hover { border-top-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-4px); }

.highlight-num {
  position: absolute;
  top: 22px; right: 24px;
  font-size: 13px;
  font-weight: 800;
  color: var(--border);
}

.highlight-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.highlight-icon svg { width: 26px; height: 26px; }

.highlight-title { font-size: 19px; font-weight: 700; color: var(--navy); margin-bottom: 10px; }
.highlight-desc { font-size: 14.5px; color: var(--text-secondary); }

/* ---------------- 多平台下载 ---------------- */
.platform-section { background: var(--bg-alt); }
.platform-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.platform-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 30px 22px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all 0.25s ease;
}
.platform-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.platform-card svg { width: 46px; height: 46px; margin: 0 auto 16px; }
.platform-title { font-size: 17px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.platform-spec { font-size: 13px; color: var(--text-muted); margin-bottom: 18px; min-height: 36px; }

/* ---------------- 功能时间线 ---------------- */
.timeline { position: relative; max-width: 920px; margin: 0 auto; }
.timeline::before {
  content: "";
  position: absolute;
  left: 27px; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--border);
}
.timeline-item { position: relative; display: flex; gap: 28px; padding-bottom: 56px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-marker {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 18px rgba(11,95,255,0.3);
}
.timeline-marker svg { width: 26px; height: 26px; }
.timeline-body { flex: 1; display: flex; gap: 32px; align-items: flex-start; }
.timeline-text { flex: 1.3; }
.timeline-tag { display: inline-block; font-size: 12.5px; font-weight: 800; letter-spacing: 1px; color: var(--primary); text-transform: uppercase; margin-bottom: 8px; }
.timeline-title { font-size: 23px; font-weight: 800; color: var(--navy); margin-bottom: 12px; }
.timeline-text > p { font-size: 15.5px; color: var(--text-secondary); margin-bottom: 14px; }
.timeline-list li { display: flex; gap: 8px; font-size: 14.5px; color: var(--text-main); margin-bottom: 8px; }
.timeline-list svg { width: 17px; height: 17px; color: var(--teal); flex-shrink: 0; margin-top: 2px; }
.timeline-visual {
  flex: 1;
  min-width: 150px;
  height: 148px;
  border-radius: var(--radius-md);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
}
.timeline-visual svg { width: 60px; height: 60px; color: var(--primary); }

/* ---------------- 数据统计 ---------------- */
.stats-band { background: var(--navy); color: #fff; }
.stats-band .section-title { color: #fff; }
.stats-band .section-desc { color: #A9B4C8; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
.stat-box { padding: 10px 16px; }
.stat-num { font-size: 42px; font-weight: 800; color: #fff; margin-bottom: 8px; }
.stat-num span { color: #6EA0FF; }
.stat-label { font-size: 14.5px; color: #A9B4C8; }

/* ---------------- 对比区 ---------------- */
.compare-wrap { border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); }
.compare-table { width: 100%; border-collapse: collapse; min-width: 680px; }
.compare-table th, .compare-table td { padding: 18px 26px; text-align: left; font-size: 15px; border-bottom: 1px solid var(--border); }
.compare-table thead th { background: var(--navy); color: #fff; font-weight: 700; }
.compare-table thead th:first-child { border-radius: 0; }
.compare-table tbody td:first-child { font-weight: 700; color: var(--navy); }
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover { background: var(--bg-alt); }
.cell-ok, .cell-no { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 14px; }
.cell-ok { color: var(--teal); }
.cell-no { color: var(--text-muted); }
.cell-ok svg, .cell-no svg { width: 18px; height: 18px; }
.table-scroll { overflow-x: auto; }

/* ---------------- 用户评价 ---------------- */
.review-section { background: var(--bg-alt); }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.review-card {
  position: relative;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid var(--border);
  overflow: hidden;
}
.review-badge {
  position: absolute; top: 16px; right: -30px;
  background: var(--teal); color: #fff; font-size: 11px; font-weight: 700;
  padding: 4px 34px; transform: rotate(35deg);
}
.review-quote { width: 30px; height: 24px; color: var(--primary-tint); margin-bottom: 10px; }
.review-quote svg { width: 100%; height: 100%; }
.review-text { font-size: 14.5px; color: var(--text-secondary); margin-bottom: 18px; min-height: 90px; }
.review-stars { display: flex; gap: 2px; color: var(--gold); margin-bottom: 12px; }
.review-stars svg { width: 15px; height: 15px; fill: currentColor; }
.review-user { display: flex; align-items: center; gap: 12px; padding-top: 14px; border-top: 1px dashed var(--border); }
.review-avatar { width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 15px; }
.review-name { font-size: 14px; font-weight: 700; color: var(--navy); }
.review-role { font-size: 12px; color: var(--text-muted); }

/* ---------------- FAQ ---------------- */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  overflow: hidden;
}
.faq-item summary {
  list-style: none;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  font-weight: 700;
  font-size: 16px;
  color: var(--navy);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-qmark {
  flex-shrink: 0;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--primary-tint);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 800;
}
.faq-toggle { margin-left: auto; width: 20px; height: 20px; flex-shrink: 0; position: relative; }
.faq-toggle::before, .faq-toggle::after { content: ""; position: absolute; background: var(--text-secondary); border-radius: 2px; transition: transform 0.2s ease; }
.faq-toggle::before { left: 0; top: 9px; width: 20px; height: 2px; }
.faq-toggle::after { left: 9px; top: 0; width: 2px; height: 20px; }
.faq-item[open] .faq-toggle::after { transform: scaleY(0); }
.faq-item[open] summary { color: var(--primary); }
.faq-answer { padding: 0 24px 22px 70px; font-size: 14.5px; color: var(--text-secondary); }

/* ---------------- 页脚 ---------------- */
.site-footer { background: var(--navy); color: #C4CCDC; padding: 60px 0 30px; }
.footer-inner { text-align: center; }
.footer-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(14, 165, 165, 0.15);
  color: #4FD1C5;
  border: 1px solid rgba(79, 209, 197, 0.3);
  padding: 9px 22px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 22px;
}
.footer-badge svg { width: 17px; height: 17px; }
.footer-text { max-width: 760px; margin: 0 auto 22px; font-size: 13.5px; line-height: 1.8; color: #9AA6BC; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 22px; font-size: 12.5px; color: #7C88A0; }

/* ============================================================
   下载页专属样式
   ============================================================ */
.dl-hero { background: linear-gradient(180deg, var(--primary-tint) 0%, #fff 70%); padding: 84px 0 30px; }
.dl-card {
  max-width: 900px; margin: 0 auto;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 46px; display: flex; gap: 46px; align-items: center;
}
.dl-card-icon { width: 78px; height: 78px; border-radius: 18px; background: var(--primary-tint); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.dl-card-icon svg { width: 42px; height: 42px; color: var(--primary); }
.dl-card-info { flex: 1.4; }
.dl-tag { display: inline-block; background: var(--primary); color: #fff; font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 4px; margin-bottom: 14px; }
.dl-title { font-size: 28px; font-weight: 800; color: var(--navy); margin-bottom: 12px; }
.dl-desc { font-size: 15px; color: var(--text-secondary); margin-bottom: 20px; }
.dl-spec-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; padding-top: 18px; border-top: 1px solid var(--border); font-size: 13px; color: var(--text-muted); }
.dl-spec-grid strong { color: var(--navy); }
.dl-action { flex-shrink: 0; width: 260px; display: flex; flex-direction: column; gap: 12px; }
.dl-safe-note { font-size: 12px; color: var(--text-muted); text-align: center; }

.other-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 50px; }
.other-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: 28px; }
.other-head { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.other-head svg { width: 40px; height: 40px; flex-shrink: 0; }
.other-name { font-size: 17px; font-weight: 700; color: var(--navy); }
.other-meta { font-size: 12.5px; color: var(--text-muted); }
.other-steps { margin: 18px 0; padding-top: 16px; border-top: 1px dashed var(--border); display: flex; flex-direction: column; gap: 10px; }
.other-step { display: flex; gap: 10px; font-size: 13.5px; color: var(--text-secondary); }
.other-step-num { flex-shrink: 0; width: 20px; height: 20px; border-radius: 50%; background: var(--primary-tint); color: var(--primary); font-size: 11px; font-weight: 800; display: flex; align-items: center; justify-content: center; }
.other-req { font-size: 12.5px; color: var(--text-muted); background: var(--bg-alt); padding: 10px 12px; border-radius: 8px; }

.guide-section { background: var(--bg-alt); }
.guide-cols { display: grid; grid-template-columns: 1.3fr 1fr; gap: 30px; align-items: start; }
.guide-panel { background: #fff; border-radius: var(--radius-lg); border: 1px solid var(--border); padding: 40px; box-shadow: var(--shadow-sm); }
.guide-panel-head { display: flex; align-items: center; gap: 12px; margin-bottom: 30px; }
.guide-panel-head svg { width: 26px; height: 26px; color: var(--primary); }
.guide-panel-head h3 { font-size: 21px; font-weight: 800; color: var(--navy); }
.guide-steps { display: flex; flex-direction: column; gap: 26px; }
.guide-step { display: flex; gap: 18px; }
.guide-step-badge { flex-shrink: 0; width: 34px; height: 34px; border-radius: 50%; background: var(--primary); color: #fff; font-weight: 800; font-size: 15px; display: flex; align-items: center; justify-content: center; }
.guide-step h4 { font-size: 16px; font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.guide-step p { font-size: 14px; color: var(--text-secondary); }

.specs-table-wrap { overflow-x: auto; }
.specs-table { width: 100%; border-collapse: collapse; min-width: 760px; }
.specs-table th, .specs-table td { padding: 14px 20px; border: 1px solid var(--border); font-size: 13.5px; text-align: left; }
.specs-table th { background: var(--navy); color: #fff; font-weight: 700; }
.specs-table td:first-child { font-weight: 700; color: var(--navy); }

.security-box {
  display: flex; align-items: center; gap: 30px;
  background: linear-gradient(120deg, rgba(14,165,165,0.08), rgba(14,165,165,0.02));
  border: 1px solid rgba(14,165,165,0.25);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.security-icon { flex-shrink: 0; width: 74px; height: 74px; border-radius: 50%; background: rgba(14,165,165,0.14); color: var(--teal); display: flex; align-items: center; justify-content: center; }
.security-icon svg { width: 38px; height: 38px; }
.security-box h3 { font-size: 19px; font-weight: 800; color: var(--navy); margin-bottom: 8px; }
.security-box p { font-size: 14.5px; color: var(--text-secondary); }

.changelog-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 28px; }
.changelog-item { border-left: 3px solid var(--primary); padding-left: 22px; position: relative; }
.changelog-item::before { content: ""; position: absolute; left: -7px; top: 2px; width: 12px; height: 12px; border-radius: 50%; background: var(--primary); }
.changelog-item.is-old { border-left-color: var(--border); }
.changelog-item.is-old::before { background: var(--text-muted); }
.changelog-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.changelog-ver { font-size: 17px; font-weight: 800; color: var(--navy); }
.changelog-date { font-size: 12.5px; color: var(--text-muted); background: var(--bg-alt); padding: 3px 10px; border-radius: 20px; }
.changelog-item ul { display: flex; flex-direction: column; gap: 8px; }
.changelog-item li { font-size: 14px; color: var(--text-secondary); padding-left: 18px; position: relative; }
.changelog-item li::before { content: "—"; position: absolute; left: 0; color: var(--text-muted); }

/* ============================================================
   中文页专属样式
   ============================================================ */
.seo-hero { text-align: center; padding: 90px 0 40px; background: linear-gradient(180deg, var(--primary-tint), #fff); }
.seo-hero h1 { font-size: 40px; font-weight: 800; color: var(--navy); max-width: 800px; margin: 0 auto 20px; line-height: 1.3; }
.seo-hero h1 em { color: var(--primary); font-style: normal; }
.seo-hero p { font-size: 16.5px; color: var(--text-secondary); max-width: 720px; margin: 0 auto; }

.article-wrap { max-width: 860px; margin: 0 auto; }
.article-block { margin-bottom: 46px; }
.article-block h2 { font-size: 25px; font-weight: 800; color: var(--navy); margin-bottom: 16px; padding-left: 14px; border-left: 4px solid var(--primary); }
.article-block p { font-size: 15.5px; color: var(--text-secondary); margin-bottom: 16px; text-align: justify; }
.article-block strong { color: var(--navy); }

.info-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 26px 0 40px; }
.info-card { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 22px; }
.info-card svg { width: 26px; height: 26px; color: var(--primary); margin-bottom: 10px; }
.info-card h3 { font-size: 15.5px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.info-card p { font-size: 13.5px; color: var(--text-secondary); margin: 0; }

.tip-box { background: var(--primary-tint); border: 1px solid rgba(11,95,255,0.18); border-radius: var(--radius-lg); padding: 34px; margin: 40px 0; }
.tip-box h3 { font-size: 19px; font-weight: 800; color: var(--primary-dark); margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.tip-row { display: flex; gap: 14px; margin-bottom: 16px; }
.tip-index { flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; background: var(--primary); color: #fff; font-size: 13px; font-weight: 800; display: flex; align-items: center; justify-content: center; }
.tip-row h4 { font-size: 15px; font-weight: 700; color: var(--navy); margin-bottom: 4px; }
.tip-row p { font-size: 13.5px; color: var(--text-secondary); margin: 0; }

.cta-box {
  background: var(--navy);
  border-radius: var(--radius-lg);
  padding: 54px 40px;
  text-align: center;
  color: #fff;
  margin: 60px 0 10px;
}
.cta-box h3 { font-size: 27px; font-weight: 800; margin-bottom: 14px; }
.cta-box p { font-size: 15px; color: #A9B4C8; max-width: 620px; margin: 0 auto 28px; }
.cta-link {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--primary); color: #fff;
  padding: 14px 36px; border-radius: 30px; font-weight: 700; font-size: 15px;
  box-shadow: 0 12px 26px rgba(11,95,255,0.35);
}
.cta-link:hover { background: var(--primary-dark); transform: translateY(-2px); }
.cta-note { font-size: 12px; color: #7C88A0; margin-top: 18px; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .highlight-grid { grid-template-columns: repeat(2, 1fr); }
  .platform-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px 20px; }
  .guide-cols { grid-template-columns: 1fr; }
  .other-grid { grid-template-columns: repeat(2, 1fr); }
  .info-cards { grid-template-columns: repeat(2, 1fr); }
  .float-cards { display: none; }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .hero-title { font-size: 32px; }
  .section-title { font-size: 26px; }
  section { padding: 64px 0; }
  .highlight-grid, .platform-grid, .review-grid, .other-grid, .info-cards { grid-template-columns: 1fr; }
  .dl-card { flex-direction: column; padding: 30px; }
  .dl-action { width: 100%; }
  .timeline-body { flex-direction: column; }
  .timeline::before { left: 27px; }
  .security-box { flex-direction: column; text-align: center; }
  .faq-answer { padding-left: 24px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}