/* ================================================================
   智稠助手 — 官网样式（精修版 · 保留紫色品牌）
   主张：单一紫色强调 + 暖墨深色区 + 米纸亮区；无渐变文字、克制玻璃态、
   纯色按钮、清晰字体层级、有节奏的留白、克制的入场动效。
   ================================================================ */

/* ===== Design Tokens ===== */
:root {
  /* 品牌 — 单一紫色强调（不再用紫蓝渐变） */
  --primary: #6d4aff;
  --primary-strong: #5a37e0;
  --primary-soft: #efecff;   /* 图标/徽章的淡紫填充 */
  --primary-ink: #2c1f73;    /* 浅底上的深紫文字 */
  --glow: rgba(109, 74, 255, 0.16);

  /* 中性色 — 全部微微着色，绝不用纯黑/纯白 */
  --ink-900: #14121c;        /* 深色区背景 */
  --ink-800: #1c1926;
  --ink-700: #262234;
  --paper:   #fafafa;        /* 页面底色 */
  --surface: #ffffff;
  --surface-2: #f6f6f8;
  --text-1: #16151d;
  --text-2: #4a4856;
  --text-3: #807e8c;
  --line: #e9e8ef;
  --line-soft: #f1f0f5;

  /* 语义色 */
  --ok: #1f9d6b;
  --warn: #e0892b;
  --err: #e2473f;

  /* 圆角 */
  --r-sm: 10px;
  --r: 14px;
  --r-lg: 20px;
  --r-xl: 28px;

  /* 阴影 — 克制、有层级 */
  --sh-1: 0 1px 2px rgba(20, 18, 28, 0.04), 0 2px 8px rgba(20, 18, 28, 0.04);
  --sh-2: 0 6px 24px rgba(20, 18, 28, 0.07);
  --sh-3: 0 14px 44px rgba(20, 18, 28, 0.10);
  --sh-4: 0 24px 64px rgba(20, 18, 28, 0.14);

  /* 动效 */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.7, 0, 0.84, 0);
  --t-fast: 140ms;
  --t: 240ms;
  --t-slow: 380ms;

  /* 字体 */
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font);
  background: var(--paper);
  color: var(--text-1);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-size: 15px;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-1);
}

/* ===== Header — 深色实底（极轻毛玻璃，仅顶部导航） ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 64px;
  background: rgba(20, 18, 28, 0.82);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background var(--t) var(--ease), border-color var(--t) var(--ease);
}
.site-header.scrolled {
  background: rgba(20, 18, 28, 0.94);
  border-bottom-color: rgba(255, 255, 255, 0.12);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.01em;
}
.logo-img {
  width: 32px;
  height: 32px;
  max-width: 32px;
  max-height: 32px;
  object-fit: contain;
  display: block;
}

/* 导航链接 */
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: 120px; }
.nav-links a {
  padding: 8px 15px;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.66);
  transition: color var(--t) var(--ease), background var(--t) var(--ease);
}
.nav-links a:hover { color: #fff; background: rgba(255, 255, 255, 0.07); }
.nav-links a.active { color: #fff; background: rgba(255, 255, 255, 0.10); }

/* Header 右侧操作区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
  padding-left: 12px;
}
.btn-download {
  background: #fff;
  color: #14121c;
  padding: 9px 18px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.btn-download:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.user-area { display: flex; align-items: center; gap: 10px; }

.header-actions .btn-ghost,
.header-actions .btn-primary {
  padding: 9px 18px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  transition: transform var(--t) var(--ease), background var(--t) var(--ease);
}
.header-actions .btn-ghost {
  background: rgba(255, 255, 255, 0.95);
  color: #14121c;
}
.header-actions .btn-ghost:hover { transform: translateY(-1px); background: #fff; }
.header-actions .btn-primary {
  background: var(--primary);
  color: #fff;
}
.header-actions .btn-primary:hover { transform: translateY(-1px); background: var(--primary-strong); }

/* 头像下拉 */
.avatar-dropdown { position: relative; }
.avatar-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px 6px 6px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50px;
  cursor: pointer;
  transition: background var(--t) var(--ease), border-color var(--t) var(--ease);
  color: #fff;
}
.avatar-toggle:hover { background: rgba(255, 255, 255, 0.14); border-color: rgba(255, 255, 255, 0.22); }
.avatar-toggle .avatar-img {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 800; flex-shrink: 0;
}
.avatar-toggle .avatar-name {
  font-size: 13px; font-weight: 500;
  max-width: 100px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.avatar-toggle .dropdown-arrow {
  font-size: 10px; color: rgba(255, 255, 255, 0.6);
  transition: transform var(--t) var(--ease);
}
.avatar-dropdown.open .dropdown-arrow { transform: rotate(180deg); }

/* 下拉菜单 — 实底（去掉玻璃态） */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 224px;
  background: var(--ink-800);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  box-shadow: var(--sh-4);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease), visibility var(--t);
  z-index: 1000;
}
.avatar-dropdown.open .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }

.dropdown-header {
  padding: 12px 14px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 6px;
}
.dropdown-header .dropdown-phone { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.dropdown-header .dropdown-plan,
.dropdown-header .dropdown-stores { font-size: 12px; color: rgba(255, 255, 255, 0.55); line-height: 1.5; }
.dropdown-header .dropdown-plan strong { color: #c9b9ff; font-weight: 700; }

.dropdown-menu a,
.dropdown-menu button {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background var(--t) var(--ease), color var(--t) var(--ease);
  font-family: inherit;
}
.dropdown-menu a:hover,
.dropdown-menu button:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.dropdown-menu a .icon,
.dropdown-menu button .icon { margin-right: 10px; font-size: 15px; opacity: 0.85; }

.dropdown-divider { height: 1px; background: rgba(255, 255, 255, 0.08); margin: 6px 0; }

.dropdown-menu .logout-btn { color: #ff8580; font-weight: 600; }
.dropdown-menu .logout-btn:hover { background: rgba(226, 71, 63, 0.12); color: #ff8580; }

/* ===== Buttons — 纯色，无渐变 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform var(--t-fast) var(--ease), background var(--t) var(--ease), box-shadow var(--t) var(--ease), color var(--t) var(--ease);
  white-space: nowrap;
  user-select: none;
}
.btn:active { transform: scale(0.98); }
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 16px var(--glow); }
.btn-primary:hover { background: var(--primary-strong); transform: translateY(-1px); box-shadow: 0 8px 24px var(--glow); }

.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255, 255, 255, 0.22); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.35); }

.btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary-soft); }

.btn-lg { padding: 14px 36px; font-size: 16px; border-radius: 12px; }

.btn-cta {
  background: #fff;
  color: var(--primary-ink);
  font-weight: 800;
  box-shadow: var(--sh-2);
}
.btn-cta:hover { box-shadow: var(--sh-3); transform: translateY(-2px); }

/* ===== Hero — 深色实底 + 极淡紫晕（无霓虹） ===== */
.hero {
  position: relative;
  background: linear-gradient(180deg, #14121c 0%, #1b1633 48%, #15131f 100%);
  color: #fff;
  padding: 168px 32px 120px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -45%; left: 50%;
  transform: translateX(-50%);
  width: 860px; height: 860px;
  background: radial-gradient(circle, rgba(109, 74, 255, 0.12) 0%, transparent 62%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 280px;
  background: radial-gradient(ellipse at center, rgba(109, 74, 255, 0.07) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; max-width: 820px; margin: 0 auto; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(109, 74, 255, 0.14);
  border: 1px solid rgba(109, 74, 255, 0.26);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 32px;
}
.hero-badge .dot {
  width: 7px; height: 7px;
  background: var(--ok);
  border-radius: 50%;
  animation: pulse-dot 2.4s ease-in-out infinite;
}
@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.hero h1 {
  font-size: clamp(38px, 5.2vw, 58px);
  font-weight: 800;
  line-height: 1.12;
  margin-bottom: 22px;
  letter-spacing: -0.03em;
  color: #fff;
}
/* 不再用渐变文字 — 改为干净的浅紫实色 */
.hero h1 .highlight { color: #c9b9ff; }

.hero p {
  font-size: clamp(15px, 2vw, 18px);
  color: rgba(255, 255, 255, 0.66);
  line-height: 1.75;
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.hero-decoration {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(109, 74, 255, 0.28), transparent);
}

/* ===== Sections ===== */
.section { padding: 104px 32px; }
.section-dark { background: var(--ink-900); color: #fff; }
.section-light { background: var(--surface); }
.section-muted { background: var(--surface-2); }
.section-inner { max-width: 1200px; margin: 0 auto; }

.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.12em;
  margin-bottom: 14px;
  text-transform: uppercase;
}
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  text-align: center;
  margin-bottom: 14px;
  letter-spacing: -0.025em;
}
.section-dark .section-title { color: #fff; }
.section-subtitle {
  font-size: clamp(14px, 2vw, 16px);
  color: var(--text-2);
  text-align: center;
  margin-bottom: 60px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.section-dark .section-subtitle { color: rgba(255, 255, 255, 0.55); }

/* ===== Feature Cards — 纯色图标、干净边框 ===== */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-card {
  position: relative;
  background: var(--surface);
  border-radius: var(--r-lg);
  padding: 34px 30px;
  border: 1px solid var(--line);
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), border-color var(--t) var(--ease);
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 0; height: 3px;
  background: var(--primary);
  border-radius: 0 0 3px 3px;
  transition: width 0.4s var(--ease);
}
.feature-card:hover::before { width: 56%; }
.feature-card:hover {
  border-color: transparent;
  box-shadow: var(--sh-3);
  transform: translateY(-6px);
}

.feature-icon {
  width: 50px; height: 50px;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  transition: transform var(--t) var(--ease), background var(--t) var(--ease);
}
.feature-card:hover .feature-icon { background: #e4dffe; transform: scale(1.05); }

.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--text-1); }
.feature-card p { font-size: 14px; color: var(--text-2); line-height: 1.7; }

.section-dark .feature-card { background: rgba(255, 255, 255, 0.04); border-color: rgba(255, 255, 255, 0.07); }
.section-dark .feature-card:hover { background: rgba(255, 255, 255, 0.07); border-color: rgba(109, 74, 255, 0.3); }
.section-dark .feature-card h3 { color: #fff; }
.section-dark .feature-card p { color: rgba(255, 255, 255, 0.55); }
.section-dark .feature-icon { background: rgba(109, 74, 255, 0.18); }

/* ===== Pricing Cards ===== */
.pricing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; align-items: start; }
.pricing-card {
  position: relative;
  background: var(--surface);
  border-radius: var(--r-lg);
  padding: 36px 28px;
  border: 1px solid var(--line);
  text-align: center;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.pricing-card:hover { box-shadow: var(--sh-3); transform: translateY(-4px); }

.pricing-card.featured {
  border: 2px solid var(--primary);
  box-shadow: 0 8px 32px var(--glow);
  background: linear-gradient(180deg, #fbfaff 0%, #fff 100%);
}
.pricing-card.featured::before {
  content: '推荐';
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  padding: 5px 20px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: 0 4px 12px var(--glow);
}

.pricing-card .plan-name { font-size: 15px; font-weight: 700; color: var(--text-2); margin-bottom: 12px; }
.pricing-card.featured .plan-name { color: var(--primary); }

.pricing-card .plan-price {
  font-size: 44px;
  font-weight: 800;
  color: var(--text-1);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 4px;
}
.pricing-card .plan-price span { font-size: 15px; font-weight: 400; color: var(--text-3); letter-spacing: 0; }
.pricing-card .plan-desc { font-size: 13px; color: var(--text-3); margin: 16px 0 28px; }

.plan-features { text-align: left; margin-bottom: 28px; }
.plan-features li {
  list-style: none;
  font-size: 13px;
  color: var(--text-1);
  padding: 9px 0;
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  gap: 8px;
}
.plan-features li:last-child { border-bottom: none; }
.plan-features li::before {
  content: '';
  display: inline-block;
  width: 16px; height: 16px;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='8' cy='8' r='7' fill='%236d4aff' fill-opacity='0.12'/%3E%3Cpath d='M5 8l2 2 4-4' stroke='%236d4aff' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;
  flex-shrink: 0;
}
.plan-features li.na { color: var(--text-3); }
.plan-features li.na::before {
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='8' cy='8' r='7' fill='%2394a3b8' fill-opacity='0.1'/%3E%3Cpath d='M6 6l4 4M10 6l-4 4' stroke='%2394a3b8' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E") center/contain no-repeat;
}

.pricing-card .btn { width: 100%; justify-content: center; }

/* ===== CTA Section ===== */
.cta-section {
  background: var(--ink-900);
  color: #fff;
  padding: 104px 32px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(109, 74, 255, 0.10) 0%, transparent 60%);
  pointer-events: none;
}
.cta-section .section-inner { position: relative; z-index: 1; max-width: 700px; }
.cta-section h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.025em;
  color: #fff;
}
.cta-section p { font-size: clamp(14px, 2vw, 17px); color: rgba(255, 255, 255, 0.6); margin-bottom: 36px; }
.cta-section .btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  padding: 16px 44px;
  font-size: 17px;
  font-weight: 800;
  border-radius: 12px;
  box-shadow: 0 8px 32px var(--glow);
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), background var(--t) var(--ease);
}
.cta-section .btn-cta:hover { background: var(--primary-strong); box-shadow: 0 12px 40px rgba(109, 74, 255, 0.34); transform: translateY(-2px); }

/* ===== Footer ===== */
.site-footer {
  margin-top: auto;
  background: var(--ink-900);
  color: rgba(255, 255, 255, 0.55);
  padding: 64px 32px 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}
.footer-brand .logo { color: #fff; margin-bottom: 16px; font-size: 18px; }
.footer-brand p { font-size: 13px; line-height: 1.9; color: rgba(255, 255, 255, 0.45); }
.footer-col h4 { color: #fff; font-size: 13px; font-weight: 700; margin-bottom: 18px; letter-spacing: 0.02em; }
.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.45);
  font-size: 13px;
  margin-bottom: 12px;
  transition: color var(--t) var(--ease);
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
  max-width: 1200px;
  margin: 48px auto 0;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.3);
  text-align: center;
}

/* ===== Auth Pages ===== */
.auth-page {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 60px;
  background: linear-gradient(180deg, #14121c 0%, #1b1633 50%, var(--surface-2) 50%);
}
.auth-card {
  background: var(--surface);
  border-radius: var(--r-xl);
  padding: 44px 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--sh-4);
  border: 1px solid var(--line-soft);
}
.auth-card h1 { font-size: 26px; font-weight: 800; margin-bottom: 6px; letter-spacing: -0.02em; }
.auth-card > p { color: var(--text-3); font-size: 14px; margin-bottom: 32px; }

.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 8px;
}
.form-group input {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid var(--line);
  border-radius: 11px;
  font-size: 14px;
  color: var(--text-1);
  background: #fafbfc;
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease), box-shadow var(--t) var(--ease);
  outline: none;
}
.form-group input:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 4px var(--primary-soft);
}
.form-group input::placeholder { color: #b0b7c3; }

.auth-card .btn-primary { width: 100%; justify-content: center; padding: 14px; font-size: 15px; border-radius: 11px; }

.auth-footer { text-align: center; margin-top: 24px; font-size: 14px; color: var(--text-3); }
.auth-footer a { color: var(--primary); font-weight: 700; transition: color var(--t) var(--ease); }
.auth-footer a:hover { color: var(--primary-strong); }

.auth-divider {
  text-align: center;
  margin: 28px 0;
  color: var(--text-3);
  font-size: 12px;
  position: relative;
}
.auth-divider::before, .auth-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 42%;
  height: 1px;
  background: var(--line-soft);
}
.auth-divider::before { left: 0; }
.auth-divider::after { right: 0; }

/* ===== Content Pages ===== */
.content-page { padding: 120px 32px 80px; min-height: calc(100vh - 64px); background: var(--paper); }
.content-page .section-inner { max-width: 860px; }
.content-page h1 { font-size: 32px; font-weight: 800; margin-bottom: 36px; display: flex; align-items: center; gap: 12px; }

.content-list { display: flex; flex-direction: column; gap: 10px; }
.content-item {
  background: var(--surface);
  border-radius: var(--r);
  padding: 20px 28px;
  border: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
  color: var(--text-1);
  transition: transform var(--t) var(--ease), border-color var(--t) var(--ease), box-shadow var(--t) var(--ease), background var(--t) var(--ease);
}
.content-item:hover {
  border-color: var(--primary);
  box-shadow: var(--sh-1);
  transform: translateX(6px);
  background: #fbfaff;
}
.content-item .title { font-size: 15px; font-weight: 500; }
.content-item .arrow { color: var(--text-3); font-size: 16px; transition: color var(--t) var(--ease), transform var(--t) var(--ease); }
.content-item:hover .arrow { color: var(--primary); transform: translateX(4px); }

/* ===== Stats Row ===== */
.stats-row { display: flex; justify-content: center; gap: 60px; flex-wrap: wrap; padding: 20px 0; }
.stat-item { text-align: center; }
.stat-num { font-size: 36px; font-weight: 800; color: #fff; letter-spacing: -0.02em; }
.stat-label { font-size: 13px; color: rgba(255, 255, 255, 0.5); margin-top: 4px; }

/* ===== Utility ===== */
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-32 { margin-top: 32px; }
.mb-0 { margin-bottom: 0; }

/* ===== Animations — 指数缓动，尊重 reduced-motion ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.animate-in { animation: fadeInUp 0.6s var(--ease) both; }
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .section { padding: 76px 24px; }
  .hero { padding: 144px 24px 96px; }
}
@media (max-width: 768px) {
  .header-inner { padding: 0 20px; }
  .nav-links { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 32px; }
  .hero { padding: 124px 20px 72px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .section { padding: 56px 20px; }
  .section-title { font-size: 26px; }
  .stats-row { gap: 32px; }
  .content-page { padding: 100px 20px 60px; }
  .content-page h1 { font-size: 24px; }
  .auth-card { padding: 32px 24px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}