/* ============================================================
   Prism Launcher 官方网站 - 全局样式表
   设计语言：扁平、现代、专业
   主色：#6f488c（品牌紫） | 强调色：#fb9168（橙） | 辅助：#4b7cbc（蓝）
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
  /* 品牌色 - 来源于 Logo */
  --color-primary: #6f488c;
  --color-primary-dark: #583471;
  --color-primary-light: #8b5fab;
  --color-primary-soft: #f4eef9;
  --color-accent: #fb9168;
  --color-accent-dark: #e87650;
  --color-secondary: #4b7cbc;
  --color-success: #99cd61;
  --color-warning: #f3db6c;
  --color-pink: #df6277;
  --color-teal: #7ab392;

  /* 中性色 */
  --color-bg: #ffffff;
  --color-bg-alt: #faf8fc;
  --color-surface: #f4f1f8;
  --color-border: #e8e3ee;
  --color-text: #2d2438;
  --color-text-muted: #6b6580;
  --color-text-light: #9b94ad;
  --color-white: #ffffff;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(45, 36, 56, 0.04);
  --shadow-md: 0 4px 16px rgba(45, 36, 56, 0.06);
  --shadow-lg: 0 12px 40px rgba(111, 72, 140, 0.10);
  --shadow-xl: 0 24px 60px rgba(111, 72, 140, 0.14);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* 间距 */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑",
               "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", "Sarasa Mono SC", Consolas, "Liberation Mono",
               Menlo, monospace;

  /* 容器宽度 */
  --container-max: 1200px;

  /* 过渡 */
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 80px;
}
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* ---------- 容器与栅格 ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.section { padding: var(--space-2xl) 0; }
.section-sm { padding: var(--space-xl) 0; }
.section-alt { background: var(--color-bg-alt); }

.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }

/* ---------- 排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.3rem, 2vw, 1.6rem); }
h4 { font-size: 1.15rem; }
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }
.lead {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}
.eyebrow.center::before { display: none; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
  text-align: center;
  line-height: 1;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(111, 72, 140, 0.32);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(111, 72, 140, 0.4);
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(251, 145, 104, 0.32);
}
.btn-accent:hover {
  background: var(--color-accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(251, 145, 104, 0.42);
}

.btn-secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-soft);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
}
.btn-ghost:hover { color: var(--color-primary); background: var(--color-primary-soft); }

.btn-lg { padding: 1rem 2rem; font-size: 1.05rem; }
.btn-sm { padding: 0.55rem 1rem; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}
.navbar.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.navbar-brand img { width: 130px; height: 50px; }
.navbar-brand span { color: var(--color-primary); }
.navbar-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.navbar-nav a {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 0.95rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.navbar-nav a:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}
.navbar-nav a.active {
  color: var(--color-primary);
  font-weight: 600;
}
.navbar-cta { display: flex; align-items: center; gap: 0.6rem; }

.navbar-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: var(--radius-sm);
}
.navbar-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}
.navbar-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar-toggle.active span:nth-child(2) { opacity: 0; }
.navbar-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero 通用 ---------- */
.hero {
  position: relative;
  padding: calc(68px + var(--space-2xl)) 0 var(--space-2xl);
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(111, 72, 140, 0.10), transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 30%, rgba(75, 124, 188, 0.10), transparent 60%),
    var(--color-bg);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}
.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}
.hero-title .grad {
  background: linear-gradient(120deg, var(--color-primary), var(--color-secondary) 60%, var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 540px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-bottom: 2rem; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 1.5rem; font-size: 0.9rem; color: var(--color-text-muted); }
.hero-meta strong { color: var(--color-text); font-size: 1.05rem; }
.hero-meta div { display: flex; align-items: center; gap: 0.4rem; }
.hero-meta svg { width: 16px; height: 16px; color: var(--color-primary); }

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-glow {
  position: absolute;
  inset: -10%;
  background: radial-gradient(circle, rgba(111, 72, 140, 0.18), transparent 60%);
  filter: blur(40px);
  z-index: 0;
}
.hero-card {
  position: relative;
  z-index: 1;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transform: perspective(1200px) rotateY(-6deg) rotateX(2deg);
  transition: transform 0.6s ease;
}
.hero-card:hover { transform: perspective(1200px) rotateY(0deg) rotateX(0deg); }

/* ---------- 卡片 ---------- */
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition);
}
.card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  background: var(--color-primary-soft);
  color: var(--color-primary);
}
.card-icon svg { width: 26px; height: 26px; }
.card-icon.color-1 { background: rgba(111, 72, 140, 0.10); color: var(--color-primary); }
.card-icon.color-2 { background: rgba(75, 124, 188, 0.10); color: var(--color-secondary); }
.card-icon.color-3 { background: rgba(251, 145, 104, 0.12); color: var(--color-accent); }
.card-icon.color-4 { background: rgba(153, 205, 97, 0.14); color: #5fa83a; }
.card-icon.color-5 { background: rgba(243, 219, 108, 0.20); color: #c79b18; }
.card-icon.color-6 { background: rgba(223, 98, 119, 0.12); color: var(--color-pink); }
.card h3 { margin-bottom: 0.5rem; }
.card p { color: var(--color-text-muted); font-size: 0.95rem; }

/* ---------- 网格 ---------- */
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- 区块头 ---------- */
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-xl);
}
.section-head h2 { margin-bottom: 1rem; }
.section-head p { font-size: 1.1rem; color: var(--color-text-muted); }

/* ---------- 徽章 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.8rem;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--color-primary-soft);
  color: var(--color-primary);
}
.badge.badge-success { background: rgba(153, 205, 97, 0.18); color: #4a8a23; }
.badge.badge-accent { background: rgba(251, 145, 104, 0.15); color: var(--color-accent-dark); }
.badge.badge-blue { background: rgba(75, 124, 188, 0.13); color: var(--color-secondary); }

/* ---------- 使用场景 ---------- */
.scenarios .scenario-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  overflow: hidden;
  transition: all var(--transition);
}
.scenario-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-primary);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
}
.scenario-card:hover::before { transform: scaleY(1); }
.scenario-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.scenario-card .num {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  margin-bottom: 0.6rem;
}
.scenario-card h3 { margin-bottom: 0.6rem; }
.scenario-card p { color: var(--color-text-muted); font-size: 0.95rem; }

/* ---------- 用户评价 ---------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.testimonial {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  position: relative;
  transition: all var(--transition);
}
.testimonial:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.testimonial-quote-mark {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 4rem;
  line-height: 1;
  color: var(--color-primary-soft);
  font-family: Georgia, serif;
  font-weight: 700;
}
.testimonial-stars {
  display: flex;
  gap: 2px;
  color: #f3b53d;
  margin-bottom: 1rem;
}
.testimonial-stars svg { width: 18px; height: 18px; }
.testimonial-text {
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 1.25rem;
  position: relative;
  z-index: 1;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}
.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 1rem;
}
.testimonial-info strong { display: block; font-size: 0.95rem; }
.testimonial-info span { font-size: 0.82rem; color: var(--color-text-muted); }

/* ---------- 数据统计条 ---------- */
.stats {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  padding: var(--space-xl) 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  text-align: center;
}
.stats-item .num {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.5rem;
  background: linear-gradient(120deg, #fff, var(--color-warning));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stats-item .label {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.85);
}

/* ---------- 下载弹窗 ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(45, 36, 56, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal {
  background: #fff;
  border-radius: var(--radius-xl);
  max-width: 760px;
  width: 100%;
  padding: 2.5rem;
  position: relative;
  transform: scale(0.92) translateY(20px);
  transition: transform var(--transition);
  max-height: 90vh;
  overflow-y: auto;
}
.modal-overlay.active .modal { transform: scale(1) translateY(0); }
.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: 1.3rem;
  transition: all var(--transition);
}
.modal-close:hover { background: var(--color-pink); color: #fff; }
.modal-head { text-align: center; margin-bottom: 1.75rem; }
.modal-head h3 { font-size: 1.6rem; margin-bottom: 0.5rem; }
.modal-head p { color: var(--color-text-muted); }

.qr-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.qr-item {
  text-align: center;
  padding: 1.5rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}
.qr-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.qr-img {
  width: 180px;
  height: 180px;
  margin: 0 auto 1rem;
  padding: 12px;
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}
.qr-img img { width: 100%; height: 100%; object-fit: contain; }
.qr-item h4 {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 0.3rem;
}
.qr-item h4 svg { width: 18px; height: 18px; }
.qr-item p { font-size: 0.85rem; color: var(--color-text-muted); margin: 0; }

.modal-footer {
  text-align: center;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.88rem;
  color: var(--color-text-muted);
}
.modal-footer a { color: var(--color-primary); font-weight: 600; }

/* ---------- 平台支持卡片 ---------- */
.platform-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  text-align: center;
  transition: all var(--transition);
}
.platform-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.platform-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-soft);
}
.platform-icon svg { width: 32px; height: 32px; color: var(--color-primary); }
.platform-card h3 { margin-bottom: 0.4rem; }
.platform-card .version { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 1rem; }
.platform-card .reqs { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 1.25rem; text-align: left; padding-top: 1rem; border-top: 1px solid var(--color-border); }
.platform-card .reqs li { padding: 0.2rem 0; display: flex; align-items: flex-start; gap: 0.4rem; }
.platform-card .reqs li::before { content: "·"; color: var(--color-primary); font-weight: 700; }

/* ---------- 时间线 ---------- */
.timeline { position: relative; max-width: 760px; margin: 0 auto; }
.timeline::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}
.timeline-item {
  position: relative;
  padding-left: 56px;
  padding-bottom: 2rem;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--color-primary);
}
.timeline-item .date {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}
.timeline-item h4 { margin-bottom: 0.4rem; }
.timeline-item p { color: var(--color-text-muted); font-size: 0.95rem; }

/* ---------- FAQ 手风琴 ---------- */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.85rem;
  background: #fff;
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item.active { border-color: var(--color-primary-light); box-shadow: var(--shadow-md); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 1.4rem;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}
.faq-question:hover { color: var(--color-primary); }
.faq-question .icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--color-primary);
}
.faq-item.active .faq-question .icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer-inner {
  padding: 0 1.4rem 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.96rem;
  line-height: 1.7;
}
.faq-answer-inner p { margin-bottom: 0.6rem; }
.faq-answer-inner p:last-child { margin-bottom: 0; }

/* ---------- 教程步骤 ---------- */
.steps { counter-reset: step; }
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  padding-bottom: 2.5rem;
  position: relative;
}
.step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 22px;
  top: 52px;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}
.step-num {
  counter-increment: step;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}
.step-num::before { content: counter(step); }
.step-body { padding-top: 0.4rem; }
.step-body h3 { margin-bottom: 0.5rem; }
.step-body p { color: var(--color-text-muted); margin-bottom: 0.75rem; }
.step-body .tip {
  background: var(--color-primary-soft);
  border-left: 3px solid var(--color-primary);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--color-text);
  margin-top: 0.5rem;
}
.step-body code {
  font-family: var(--font-mono);
  background: var(--color-surface);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.88rem;
  color: var(--color-primary);
}

/* ---------- CTA Banner ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-xl) 2.5rem;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(251, 145, 104, 0.3), transparent 70%);
  top: -100px;
  right: -100px;
  border-radius: 50%;
}
.cta-banner h2 { color: #fff; margin-bottom: 1rem; position: relative; }
.cta-banner p { color: rgba(255, 255, 255, 0.92); margin-bottom: 1.75rem; max-width: 560px; margin-left: auto; margin-right: auto; position: relative; }
.cta-banner .hero-actions { justify-content: center; margin-bottom: 0; position: relative; }
.cta-banner .btn-secondary { background: rgba(255, 255, 255, 0.15); color: #fff; border-color: rgba(255, 255, 255, 0.3); }
.cta-banner .btn-secondary:hover { background: rgba(255, 255, 255, 0.25); }

/* ---------- 页脚 ---------- */
.footer {
  background: #1f1a28;
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-xl) 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}
.footer-brand img { width: 126px; height: 46px; margin-bottom: 1rem; }
.footer-brand h4 { color: #fff; font-size: 1.2rem; margin-bottom: 0.75rem; }
.footer-brand p { font-size: 0.92rem; color: rgba(255, 255, 255, 0.6); margin-bottom: 1rem; }
.footer-social { display: flex; gap: 0.6rem; }
.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  transition: all var(--transition);
}
.footer-social a:hover { background: var(--color-primary); color: #fff; transform: translateY(-2px); }
.footer-social svg { width: 18px; height: 18px; }
.footer-col h5 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}
.footer-col ul li { margin-bottom: 0.55rem; }
.footer-col ul li a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: #fff; }
.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}
.footer-bottom a { color: rgba(255, 255, 255, 0.7); }
.footer-bottom a:hover { color: #fff; }

/* ---------- 页面头 ---------- */
.page-hero {
  padding: calc(68px + var(--space-xl)) 0 var(--space-xl);
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(111, 72, 140, 0.10), transparent 70%),
    var(--color-bg);
  text-align: center;
}
.page-hero h1 { margin-bottom: 1rem; }
.page-hero p { font-size: 1.15rem; color: var(--color-text-muted); max-width: 640px; margin: 0 auto; }

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb svg { width: 14px; height: 14px; }

/* ---------- 滚动动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in { opacity: 1; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
  .hero-visual { order: -1; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .navbar-nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: #fff;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    align-items: stretch;
  }
  .navbar-nav.active { transform: translateY(0); opacity: 1; visibility: visible; }
  .navbar-nav a { padding: 0.85rem 1rem; border-radius: var(--radius-sm); }
  .navbar-toggle { display: flex; }
  .navbar-cta .btn-secondary { display: none; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
  .qr-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
  .footer-brand { grid-column: 1 / -1; }
  .section { padding: var(--space-xl) 0; }
  .modal { padding: 1.5rem; }
  .hero { padding-top: calc(68px + var(--space-xl)); }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .stats-grid { grid-template-columns: 1fr; }
}