/* ===== 虎跃加速 全站样式 ===== */
/* 设计变量：深墨蓝 + 琥珀橙 双色主题 */
:root {
  --ink: #0b1830;
  --ink-2: #13234a;
  --ink-3: #1c2f5c;
  --amber: #ff9d2e;
  --amber-dark: #e8790a;
  --amber-light: #ffc98a;
  --mist: #f5f7fb;
  --mist-2: #eceff8;
  --white: #ffffff;
  --text-main: #1b2340;
  --text-soft: #5b6478;
  --text-invert: #eef1fa;
  --line: #e2e6f2;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-card: 0 10px 30px rgba(11, 24, 48, 0.08);
  --shadow-pop: 0 20px 45px rgba(11, 24, 48, 0.16);
  --container: 1160px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  color: var(--text-main);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

button { font-family: inherit; cursor: pointer; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 88px 0;
}

.section-mist { background: var(--mist); }

.section-ink {
  background: linear-gradient(160deg, var(--ink) 0%, var(--ink-2) 100%);
  color: var(--text-invert);
  position: relative;
  overflow: hidden;
}

/* 虎纹斜线纹理：作为背景装饰，形成独特视觉锚点 */
.stripe-texture::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    115deg,
    rgba(255, 157, 46, 0.06) 0px,
    rgba(255, 157, 46, 0.06) 2px,
    transparent 2px,
    transparent 34px
  );
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--amber-dark);
  background: rgba(255, 157, 46, 0.12);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.section-ink .eyebrow {
  color: var(--amber-light);
  background: rgba(255, 157, 46, 0.14);
}

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(32px, 4.4vw, 52px); }
h2 { font-size: clamp(26px, 3.2vw, 38px); }
h3 { font-size: 20px; }

.section-head {
  max-width: 640px;
  margin: 0 auto 52px;
  text-align: center;
}

.section-head p {
  color: var(--text-soft);
  font-size: 16px;
  margin-top: 12px;
}

.section-ink .section-head p { color: #b7c1de; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  border: 2px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: linear-gradient(135deg, var(--amber) 0%, var(--amber-dark) 100%);
  color: var(--ink);
  box-shadow: 0 12px 24px rgba(232, 121, 10, 0.28);
}

.btn-primary:hover { box-shadow: 0 16px 30px rgba(232, 121, 10, 0.36); }

.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.28);
  color: var(--text-invert);
}

.btn-ghost:hover { border-color: var(--amber); }

.btn-outline {
  background: transparent;
  border-color: var(--ink-3);
  color: var(--ink);
}

.btn-outline:hover { border-color: var(--amber-dark); color: var(--amber-dark); }

.btn-block { width: 100%; }
.btn-sm { padding: 9px 18px; font-size: 13px; }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 24, 48, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 19px;
  color: var(--text-invert);
}

.brand .logo-mark { width: 34px; height: 34px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: #c7cfe6;
  transition: color 0.15s ease;
  position: relative;
}

.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--white); }

.nav-links a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -22px;
  height: 2px;
  background: var(--amber);
}

.nav-cta { display: flex; align-items: center; gap: 12px; }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
}

/* ===== Hero ===== */
.hero {
  padding: 76px 0 90px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-copy p.lead {
  color: #b7c1de;
  font-size: 18px;
  margin: 20px 0 30px;
  max-width: 520px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 44px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 28px;
}

.hero-stats .num {
  font-size: 24px;
  font-weight: 800;
  color: var(--amber-light);
}

.hero-stats .label {
  font-size: 13px;
  color: #9aa5c4;
  margin-top: 4px;
}

.hero-art { position: relative; }

/* ===== 数据条 ===== */
.marquee-bar {
  background: var(--mist);
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
}

.marquee-bar .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
  color: var(--text-soft);
}

.marquee-bar strong { color: var(--ink); }

/* ===== 功能特性网格 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.feature-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: transparent;
}

.feature-card .icon {
  width: 46px;
  height: 46px;
  margin-bottom: 16px;
}

.feature-card h3 { margin-bottom: 8px; font-size: 17px; }

.feature-card p { color: var(--text-soft); font-size: 14px; }

/* ===== 定价卡片 ===== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.pricing-grid.pricing-grid-5 { grid-template-columns: repeat(5, 1fr); }

.price-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card); }

.price-card.featured {
  border-color: var(--amber);
  box-shadow: var(--shadow-pop);
  transform: translateY(-8px);
}

.price-card .badge {
  position: absolute;
  top: -14px;
  left: 24px;
  background: linear-gradient(135deg, var(--amber), var(--amber-dark));
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 999px;
}

.price-card .plan-name { font-size: 15px; color: var(--text-soft); font-weight: 600; }

.price-card .plan-quota { font-size: 26px; font-weight: 800; margin: 10px 0 4px; }

.price-card .plan-price {
  font-size: 34px;
  font-weight: 800;
  color: var(--amber-dark);
  margin: 6px 0 2px;
}

.price-card .plan-price span { font-size: 14px; color: var(--text-soft); font-weight: 500; }

.price-card .plan-ratio { font-size: 13px; color: var(--text-soft); margin-bottom: 20px; }

.price-card ul { margin: 20px 0 26px; display: flex; flex-direction: column; gap: 10px; }

.price-card ul li {
  font-size: 13.5px;
  color: var(--text-main);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.price-card ul li svg { flex: none; width: 16px; height: 16px; margin-top: 2px; color: var(--amber-dark); }

/* ===== 用户评价 ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.review-card {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  padding: 26px;
}

.review-card .stars { color: var(--amber-dark); font-size: 14px; margin-bottom: 12px; }

.review-card p.quote { color: var(--text-main); font-size: 14.5px; margin-bottom: 18px; }

.review-card .who { display: flex; align-items: center; gap: 10px; }

.review-card .avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--ink-3), var(--ink));
  color: var(--amber-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
}

.review-card .who .name { font-size: 13.5px; font-weight: 700; }
.review-card .who .role { font-size: 12px; color: var(--text-soft); }

/* ===== FAQ 手风琴 ===== */
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--white);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: transparent;
  border: none;
  text-align: left;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}

.faq-question .plus {
  flex: none;
  width: 22px; height: 22px;
  position: relative;
}

.faq-question .plus::before, .faq-question .plus::after {
  content: "";
  position: absolute;
  background: var(--amber-dark);
  border-radius: 2px;
  transition: transform 0.2s ease;
}

.faq-question .plus::before { top: 50%; left: 0; width: 100%; height: 2px; margin-top: -1px; }
.faq-question .plus::after { left: 50%; top: 0; height: 100%; width: 2px; margin-left: -1px; }

.faq-item.open .faq-question .plus::after { transform: rotate(90deg); opacity: 0; }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}

.faq-answer p {
  padding: 0 24px 22px;
  color: var(--text-soft);
  font-size: 14.5px;
}

.faq-cat-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--amber-dark);
  letter-spacing: 0.04em;
  margin: 40px 0 16px;
}

.faq-cat-title:first-child { margin-top: 0; }

/* ===== CTA 横幅 ===== */
.cta-banner {
  border-radius: 28px;
  background: linear-gradient(135deg, var(--ink) 0%, var(--ink-2) 60%, var(--ink-3) 100%);
  color: var(--text-invert);
  padding: 60px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}

.cta-banner h2 { margin-bottom: 10px; }
.cta-banner p { color: #b7c1de; }

/* ===== 步骤 / 教程 ===== */
.step-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  counter-reset: step;
}

.step-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  position: relative;
}

.step-card .step-num {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--amber), var(--amber-dark));
  color: var(--ink);
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  font-size: 16px;
}

.step-card h3 { margin-bottom: 8px; }
.step-card p { color: var(--text-soft); font-size: 14px; }

/* ===== 平台下载卡片 ===== */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.platform-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  text-align: center;
}

.platform-card .icon { width: 52px; height: 52px; margin: 0 auto 18px; }
.platform-card h3 { margin-bottom: 6px; }
.platform-card .meta { color: var(--text-soft); font-size: 13px; margin-bottom: 20px; }

/* ===== 面包屑 ===== */
.breadcrumb {
  font-size: 13px;
  color: var(--text-soft);
  padding: 18px 0;
  display: flex;
  gap: 8px;
  align-items: center;
}

.breadcrumb a { color: var(--text-soft); }
.breadcrumb a:hover { color: var(--amber-dark); }
.breadcrumb .sep { color: #c3c9dc; }
.breadcrumb .current { color: var(--ink); font-weight: 600; }

/* ===== 表格式对比 ===== */
.compare-table { width: 100%; border-collapse: collapse; background: var(--white); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-card); }
.compare-table th, .compare-table td { padding: 16px 18px; text-align: left; font-size: 14px; border-bottom: 1px solid var(--line); }
.compare-table th { background: var(--ink); color: var(--text-invert); font-weight: 700; }
.compare-table tr:last-child td { border-bottom: none; }
.table-scroll { overflow-x: auto; }

/* ===== 信任标识 ===== */
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.trust-card { text-align: center; padding: 30px 20px; }
.trust-card .icon { width: 44px; height: 44px; margin: 0 auto 14px; }
.trust-card h3 { font-size: 16px; margin-bottom: 8px; }
.trust-card p { color: var(--text-soft); font-size: 13.5px; }

/* ===== 联系方式卡片 ===== */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.contact-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-md); padding: 24px; text-align: center; }
.contact-card .icon { width: 36px; height: 36px; margin: 0 auto 12px; color: var(--amber-dark); }
.contact-card .value { font-weight: 700; margin-top: 6px; }
.contact-card .label { font-size: 13px; color: var(--text-soft); }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--ink);
  color: #9aa5c4;
  padding: 64px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .brand { margin-bottom: 14px; }
.footer-brand p { font-size: 13.5px; line-height: 1.8; max-width: 300px; }

.footer-col h4 { font-size: 14px; color: var(--text-invert); margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 13.5px; }
.footer-col a:hover { color: var(--amber-light); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 24px;
  font-size: 12.5px;
}

/* ===== 移动端汉堡菜单面板 ===== */
.mobile-panel {
  display: none;
  position: fixed;
  inset: 76px 0 0 0;
  background: var(--ink);
  z-index: 99;
  padding: 28px 24px;
  overflow-y: auto;
}

.mobile-panel.open { display: block; }

.mobile-panel a {
  display: block;
  padding: 14px 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-invert);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mobile-panel .mobile-cta { margin-top: 24px; display: flex; flex-direction: column; gap: 12px; }

/* ===== 响应式 ===== */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding-top: 48px; }
  .hero-art { order: -1; max-width: 380px; margin: 0 auto; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid, .pricing-grid.pricing-grid-5 { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: 1fr; }
  .step-list { grid-template-columns: repeat(2, 1fr); }
  .platform-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .nav-links, .nav-cta .btn-outline { display: none; }
  .nav-toggle { display: flex; }
  .hero-stats { grid-template-columns: repeat(2, auto); }
  .feature-grid, .pricing-grid, .pricing-grid.pricing-grid-5, .step-list, .platform-grid { grid-template-columns: 1fr; }
  .cta-banner { flex-direction: column; text-align: center; padding: 44px 26px; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  h1 { font-size: 32px; }
}