/* ============================================================
   四升五 AI — 设计系统 v10
   纯白底 + 荧光绿 + 黑色三级字阶
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

/* ---------- CSS 变量 ---------- */
:root {
  /* ══ 四升五设计系统 v9 — AI 绿·简洁·高级 ══ */

  /* ── 背景层级（统一白底）── */
  --bg-page:        #FFFFFF;
  --bg-section:     #FFFFFF;
  --bg-card:        #FFFFFF;
  --bg-card-hover:  #FFFFFF;
  --bg-light:       #FFFFFF;
  --bg-tinted:      #FBFFFC;
  --bg-white:       #FFFFFF;
  --bg-hero:        #FFFFFF;
  --bg-dark:        #FFFFFF;
  --bg-darker:      #FFFFFF;
  --bg-footer:      #FFFFFF;

  /* ── AI 荧光绿色系 ── */
  --ai-green:         #39FFB6;
  --ai-green-light:   #9DFFD9;
  --ai-green-mid:     #14E59A;
  --ai-green-dark:    #06C67B;
  --ai-green-deeper:  #02A665;
  --ai-green-glow:    rgba(57,255,182,.22);
  --ai-green-border:  rgba(57,255,182,.28);
  --ai-green-bg:      rgba(57,255,182,.08);

  /* ── 兼容别名（全部指向新色）── */
  --brand-green:      #39FFB6;
  --green-glow:       #9DFFD9;
  --green-accent:     #14E59A;
  --green-solid:      #06C67B;
  --green-fluorescent:#39FFB6;
  --green-dark:       #02A665;
  --green-light:      #F4FFF9;
  --green-border:     rgba(57,255,182,.28);
  --green-text:       #06C67B;
  --brand-blue:       #39FFB6;
  --brand-cyan:       #14E59A;
  --brand-purple:     #06C67B;
  --brand-teal:       #06C67B;
  --brand-navy:       #101010;

  /* ── Hero 渐变（纯白 + 荧光绿雾）── */
  --gradient-brand: linear-gradient(135deg, #39FFB6, #06C67B);
  --gradient-hero:
    radial-gradient(ellipse at 18% 20%, rgba(57,255,182,.10) 0%, transparent 42%),
    radial-gradient(ellipse at 82% 18%, rgba(157,255,217,.11) 0%, transparent 44%),
    radial-gradient(ellipse at 50% 88%, rgba(57,255,182,.07) 0%, transparent 40%),
    linear-gradient(180deg, #FFFFFF 0%, #FEFFFE 45%, #FFFFFF 100%);

  /* ── 文字 ── */
  --color-text:        #101010;
  --color-text-muted:  #2B231D;
  --color-text-subtle: #5F5953;

  /* ── 边框（统一：可见细边框）── */
  --border-light:  rgba(16,16,16,.10);
  --border-medium: rgba(57,255,182,.22);
  --border-strong: #39FFB6;
  --border-card:   rgba(16,16,16,.06);

  /* ── 卡片阴影（柔和，统一调性）── */
  --shadow-card:       0 2px 8px rgba(16,16,16,.07), 0 8px 24px rgba(16,16,16,.04);
  --shadow-card-hover: 0 0 0 1px rgba(57,255,182,.20), 0 24px 48px rgba(16,16,16,.06);

  /* ── 向下兼容 ── */
  --color-bg:             #FFFFFF;
  --color-surface:        #FFFFFF;
  --color-surface-raised: #FFFFFF;
  --color-border:         rgba(16,16,16,.06);
  --color-border-light:   rgba(16,16,16,.06);
  --color-primary:        #39FFB6;
  --color-primary-dark:   #06C67B;
  --color-primary-light:  #9DFFD9;
  --color-accent:         #06C67B;
  --color-accent-light:   #39FFB6;
  --color-warm:           #FFFFFF;
  --glow-green:   rgba(57,255,182,.20);
  --glow-teal:    rgba(57,255,182,.12);
  --hero-bg:      #FFFFFF;
  --hero-mid:     #FEFFFE;
  --hero-end:     #FFFFFF;
  --brand-start:  #39FFB6;
  --brand-end:    #06C67B;
  --blue-mist:        #FFFFFF;
  --blue-mist-mid:    #FBFFFC;
  --blue-mist-strong: rgba(57,255,182,.14);
  --blue-ambient:     rgba(57,255,182,.06);
  --blue-border:      rgba(16,16,16,.06);
}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(45,212,191,.28); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: #2DD4BF; }

/* ---------- 文字选中高亮 ---------- */
::selection { background: #CCFBF1; color: #0D9488; }

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  background-color: #FFFFFF;
  background-image: none;
  color: var(--color-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 布局容器 ---------- */
.container {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- 全局排版基线 ---------- */
h1 { line-height: 1.15; letter-spacing: -.025em; }
h2 { line-height: 1.2;  letter-spacing: -.02em; }
h3 { line-height: 1.3; }
p  { line-height: 1.9; margin-bottom: 1rem; }

/* ===== 浅色主题全局强制覆盖 ===== */
/* 覆盖 Tailwind white/emerald 文字类 */
.text-white   { color: var(--color-text) !important; }
.text-emerald-200 { color: var(--color-text-subtle) !important; }
.text-emerald-300 { color: var(--brand-green) !important; }
.text-emerald-400 { color: var(--brand-green) !important; }

/* 恢复按钮内白色文字 */
.btn-primary,
a.btn-primary,
button.btn-primary { color: #FFFFFF !important; }

/* 强制覆盖任何深色内联背景 */
[style*="background:#050505"],
[style*="background:#0a0a0a"],
[style*="background:#0d0d0d"],
[style*="background:#111111"],
[style*="background: #050505"],
[style*="background: #0a0a0a"] {
  background: #FFFFFF !important;
  color: #0F172A !important;
}
/* 覆盖 Tailwind bg-white 使其跟随变量 */
.bg-white { background-color: #FFFFFF !important; }

/* ---------- 品牌渐变工具类 ---------- */
.gradient-brand {
  background: var(--brand-green);
}
.gradient-brand-text {
  background: linear-gradient(135deg, #39FFB6, #06C67B);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gradient-hero {
  background: var(--gradient-hero);
  border-bottom: none;
}

/* ---------- 节区背景 ---------- */
.section-light {
  background-color: #FFFFFF;
  background-image: none;
}
.section-tinted { background: #FFFFFF; }
.section-white  { background: #FFFFFF; }
.section-dark   { background: #FFFFFF; }
.section-darker { background: #FFFFFF; }

/* 点阵背景叠加（同时使用section-light等） */
.dot-bg { background-image: none; }

/* ---------- 节区自然过渡（桥接层）---------- */
/* 深色到浅色（现在全是浅色，直接过渡） */
.bridge-dark-light {
  height: 0;
  background: transparent;
  margin: -1px 0;
}
/* 浅色到深色 */
.bridge-light-dark {
  height: 0;
  background: transparent;
  margin: -1px 0;
}
/* Hero 到浅色 */
.bridge-hero-light {
  height: 0;
  background: transparent;
  margin: -1px 0;
}
/* 白色到页脚（现在都是浅色，无需深色过渡） */
.bridge-white-footer {
  height: 0;
  background: transparent;
  margin: -1px 0;
}
/* 浅色到页脚 */
.bridge-light-footer {
  height: 0;
  background: transparent;
  margin: -1px 0;
}

/* 波浪分隔 */
.wave-divider {
  display: none;
}
.wave-divider svg { display: none; }

/* 分隔线 */
.glow-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(16,16,16,.08), transparent);
  border: none;
  margin: 0;
}

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid #E6F7F5;
  transition: box-shadow .3s;
}
.navbar.scrolled {
  box-shadow: 0 1px 20px rgba(45,212,191,.08);
}

/* Logo 统一大小 */
.navbar img {
  height: 1.75rem;
}

.nav-link {
  color: var(--color-text-subtle);
  text-decoration: none;
  font-weight: 500;
  font-size: .875rem;
  transition: color .2s;
  padding: .25rem 0;
  position: relative;
  letter-spacing: .01em;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 2px;
  background: var(--brand-green);
  transform: scaleX(0);
  transition: transform .25s;
  border-radius: 1px;
}
.nav-link:hover, .nav-link.active { color: var(--color-text); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }

/* ---------- 移动端菜单 ---------- */
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  padding: 1.25rem 1.5rem 1.5rem;
  z-index: 49;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: .75rem 0;
  border-bottom: 1px solid var(--border-light);
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  transition: color .2s;
}
.mobile-menu a:hover { color: var(--color-text); }
.mobile-menu a:last-of-type { border-bottom: none; }

/* ---------- 按钮系统 ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: linear-gradient(135deg, #06C67B 0%, #14E59A 100%);
  color: #ffffff;
  font-weight: 600;
  padding: .75rem 2rem;
  border-radius: .625rem;
  text-decoration: none;
  transition: background .2s, transform .15s, box-shadow .2s;
  box-shadow: 0 10px 24px rgba(57,255,182,.20);
  white-space: nowrap;
}
.btn-primary:hover {
  background: linear-gradient(135deg, #05B972 0%, #0FDA92 100%);
  transform: translateY(-1px);
  box-shadow: 0 18px 32px rgba(57,255,182,.24);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: #FFFFFF;
  color: var(--color-text-muted);
  font-weight: 600;
  padding: .75rem 2rem;
  border-radius: .625rem;
  border: 1px solid var(--border-light);
  text-decoration: none;
  transition: border-color .2s, background .2s, color .2s, transform .15s;
  white-space: nowrap;
}
.btn-secondary:hover {
  border-color: var(--green-border);
  color: var(--color-text);
  background: #F9FFFC;
  transform: translateY(-1px);
}

.btn-outline-white {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  border: 1px solid var(--border-light);
  color: var(--color-text-muted);
  font-weight: 600;
  padding: .75rem 2rem;
  border-radius: .625rem;
  text-decoration: none;
  transition: background .2s, border-color .2s, color .2s;
  white-space: nowrap;
}
.btn-outline-white:hover {
  border-color: var(--green-border);
  color: var(--color-text);
  background: #F9FFFC;
}

.btn-outline-dark {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  border: 1px solid var(--border-light);
  color: var(--color-text-subtle);
  font-weight: 500;
  padding: .75rem 2rem;
  border-radius: .625rem;
  text-decoration: none;
  transition: border-color .2s, color .2s, background .2s;
  white-space: nowrap;
}
.btn-outline-dark:hover {
  border-color: var(--green-border);
  color: var(--color-text);
  background: #F9FFFC;
}

/* Compat */
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  border: 1px solid var(--border-light);
  color: var(--color-text-subtle);
  font-weight: 500;
  padding: .75rem 2rem;
  border-radius: .625rem;
  text-decoration: none;
  transition: border-color .2s, color .2s, background .2s;
  white-space: nowrap;
}
.btn-outline:hover {
  border-color: var(--green-border);
  color: var(--color-text);
  background: #F9FFFC;
}

/* ---------- 图标盒子系统 ---------- */
.icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: .875rem;
}
.icon-box-sm { width: 2.5rem; height: 2.5rem; border-radius: .625rem; }
.icon-box-md { width: 3rem;   height: 3rem;   border-radius: .75rem;  }
.icon-box-lg { width: 3.5rem; height: 3.5rem; border-radius: .875rem; }
.icon-box-xl { width: 4rem;   height: 4rem;   border-radius: 1rem;    }

/* 亮色背景变体 */
.icon-box-blue   {
  background: rgba(57,255,182,.08);
  border: 1px solid rgba(57,255,182,.18);
  color: #06C67B;
}
.icon-box-purple {
  background: rgba(157,255,217,.22);
  border: 1px solid rgba(57,255,182,.14);
  color: #06C67B;
}
.icon-box-cyan {
  background: rgba(57,255,182,.06);
  border: 1px solid rgba(57,255,182,.14);
  color: #06C67B;
}
.icon-box-green {
  background: rgba(57,255,182,.08);
  border: 1px solid rgba(57,255,182,.18);
  color: #06C67B;
}
.icon-box-gold {
  background: rgba(245,158,11,.08);
  border: 1px solid rgba(245,158,11,.16);
  color: #b45309;
}
.icon-box-brand {
  background: linear-gradient(135deg, #39FFB6 0%, #06C67B 100%);
  color: #101010;
}

/* 深色变体（现在统一用浅色） */
.icon-box-blue-d {
  background: rgba(57,255,182,.08);
  border: 1px solid rgba(57,255,182,.18);
  color: #06C67B;
}
.icon-box-purple-d {
  background: rgba(157,255,217,.22);
  border: 1px solid rgba(57,255,182,.14);
  color: #06C67B;
}
.icon-box-cyan-d {
  background: rgba(57,255,182,.06);
  border: 1px solid rgba(57,255,182,.14);
  color: #06C67B;
}
.icon-box-green-d {
  background: rgba(57,255,182,.08);
  border: 1px solid rgba(57,255,182,.20);
  color: #06C67B;
}
.icon-box-gold-d {
  background: rgba(245,158,11,.08);
  border: 1px solid rgba(245,158,11,.2);
  color: #B45309;
}

/* ---------- 标签/徽章 ---------- */
.tag-chip,
.tag-chip-dark,
.data-tag,
.section-label {
  display: none !important;
}

/* ---------- 节标题系统 ---------- */
.section-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.25;
  margin-bottom: .875rem;
  letter-spacing: -.02em;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-subtle);
  max-width: 36rem;
  margin: 0 auto;
  line-height: 1.8;
}
/* 深色背景上的节标题（现在与 section-title 相同） */
.section-title-light {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
  margin-bottom: .875rem;
  letter-spacing: -.02em;
}
.section-subtitle-light {
  font-size: 1rem;
  color: var(--color-text-subtle);
  max-width: 36rem;
  margin: 0 auto;
  line-height: 1.9;
}

/* 二级页面 Hero 标题 */
.page-hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.15;
  letter-spacing: -.025em;
  margin-bottom: 1.25rem;
}

/* ---------- 首页成品化模块 ---------- */
.home-block {
  padding: 6rem 0;
}

.home-kicker {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: 1.25rem;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}

.home-kicker::before {
  content: '';
  width: 2.75rem;
  height: 1px;
  background: linear-gradient(90deg, rgba(57,255,182,.7), rgba(57,255,182,0));
}

.home-hero-copy {
  max-width: 34rem;
}

.home-hero-text {
  font-size: 1.0625rem;
  line-height: 1.95;
  color: var(--color-text-muted);
  max-width: 31rem;
  margin-bottom: 0;
}

.home-assistant-title {
  white-space: nowrap;
}

.hero-canvas {
  width: min(100%, 520px);
  height: auto;
}

.about-hero-copy {
  white-space: nowrap;
}

.home-intro-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.home-intro-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: 1.25rem;
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.home-intro-index {
  font-family: 'Space Mono', monospace;
  font-size: .8rem;
  color: var(--brand-green);
  letter-spacing: .06em;
  margin-bottom: 1.1rem;
}

.home-intro-card h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: .75rem;
}

.home-intro-card p {
  color: var(--color-text-muted);
  line-height: 1.85;
  margin-bottom: 0;
}

.home-flow-section {
  padding-top: 2rem;
}

.home-story-list {
  border-top: 1px solid var(--border-light);
}

.home-story-item {
  padding: 1.4rem 0 1.45rem;
  border-bottom: 1px solid var(--border-light);
}

.home-story-item h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: .5rem;
}

.home-story-item p {
  color: var(--color-text-muted);
  margin-bottom: 0;
}

.home-agent-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.home-agent-card {
  background: linear-gradient(180deg, #FFFFFF 0%, #FCFFFD 100%);
  border: 1px solid var(--border-light);
  border-radius: 1.25rem;
  padding: 2rem;
  box-shadow: var(--shadow-card);
}

.home-agent-label {
  display: inline-flex;
  align-items: center;
  min-height: 1.85rem;
  padding: 0 .7rem;
  border-radius: 999px;
  border: 1px solid rgba(57,255,182,.24);
  background: rgba(57,255,182,.08);
  color: var(--color-text-muted);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .04em;
  margin-bottom: 1rem;
}

.home-agent-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: .8rem;
}

.home-agent-card p {
  color: var(--color-text-muted);
  line-height: 1.85;
  margin-bottom: 0;
}

.home-cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 2rem 2.25rem;
  border: 1px solid var(--border-light);
  border-radius: 1.5rem;
  background: linear-gradient(180deg, rgba(255,255,255,.96) 0%, rgba(252,255,253,.96) 100%);
  box-shadow: var(--shadow-card);
}

.home-editorial {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: 2.5rem;
  align-items: end;
  margin-bottom: 2.5rem;
}

.home-editorial-copy {
  font-size: 1.0625rem;
  line-height: 1.95;
  color: var(--color-text-muted);
  max-width: 34rem;
  margin-bottom: 0;
}

.home-dual-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.home-dual-card {
  background: linear-gradient(180deg, #FFFFFF 0%, #FCFFFD 100%);
  border: 1px solid var(--border-light);
  border-radius: 1.25rem;
  padding: 2rem;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.home-dual-label {
  display: inline-flex;
  align-items: center;
  min-height: 1.9rem;
  padding: 0 .72rem;
  border-radius: 999px;
  background: rgba(57,255,182,.08);
  border: 1px solid rgba(57,255,182,.22);
  color: var(--color-text-muted);
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .05em;
  margin-bottom: 1rem;
}

.home-dual-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: .8rem;
}

.home-dual-card p {
  color: var(--color-text-muted);
  line-height: 1.85;
  margin-bottom: 0;
}

.home-company-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(22rem, .88fr);
  gap: 2.25rem;
  align-items: start;
  padding: 2.25rem;
  border: 1px solid var(--border-light);
  border-radius: 1.5rem;
  background: linear-gradient(180deg, #FFFFFF 0%, #FCFFFD 100%);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.home-company-title {
  font-size: clamp(1.85rem, 2.65vw, 2.7rem);
  line-height: 1.18;
  letter-spacing: -.028em;
  white-space: nowrap;
  margin-bottom: 1rem;
}

.home-company-text {
  margin: 0;
  max-width: 35rem;
}

.home-company-copy .section-subtitle {
  text-align: left;
}

.home-company-points {
  border-left: 1px solid var(--border-light);
  padding-left: 1.75rem;
}

.home-company-points .home-story-item:first-child {
  padding-top: 0;
}

/* ---------- 统一卡片系统 ---------- */
.card {
  background: linear-gradient(180deg, #FFFFFF 0%, #FCFFFD 100%);
  border-radius: 1rem;
  padding: 2.5rem;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card);
  transition: transform .25s, box-shadow .25s, border-color .25s;
  position: relative;
  overflow: hidden;
}
.card::after { display: none; }
.card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(57,255,182,.24);
}

/* 玻璃卡片 */
.glass-card {
  background: linear-gradient(180deg, #FFFFFF 0%, #FCFFFD 100%);
  border: 1px solid var(--border-light);
  border-radius: 1rem;
  padding: 2rem;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.glass-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(57,255,182,.24);
}

/* 卡片（暗色变体，现在也是浅色） */
.agent-card {
  background: linear-gradient(180deg, #FFFFFF 0%, #FCFFFD 100%);
  border: 1px solid var(--border-light);
  border-radius: 1rem;
  padding: 1.5rem;
  transition: transform .25s, box-shadow .25s, border-color .25s;
  position: relative;
  overflow: hidden;
}
.agent-card::before { display: none; }
.agent-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(57,255,182,.24);
}
.agent-card::after { display: none; }

/* 渐变边框卡片（用于数据展示） */
.grad-border-card {
  position: relative;
  border-radius: 1rem;
  padding: 1px;
  background: linear-gradient(135deg, rgba(57,255,182,.38), rgba(157,255,217,.18));
}
.grad-border-card-inner {
  background: #FFFFFF;
  border-radius: calc(1rem - 1px);
  padding: 1.5rem;
  height: 100%;
}

/* 产品卡片 */
.product-card {
  background: #FFFFFF;
  border-radius: .875rem;
  border: 1px solid #E6F7F5;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform .25s, box-shadow .25s, border-color .25s;
  position: relative;
}
.product-card::after { display: none; }
.product-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(45,212,191,.38);
}
.product-card-bar {
  height: 4px;
  background: #2DD4BF;
}
.product-card-bar.muted {
  background: #94a3b8;
  opacity: .35;
}
.product-card-body { padding: 1.75rem; }

/* Coming Soon 蒙版 */
.coming-soon-card { position: relative; }
.coming-soon-card .card-inner {
  opacity: .5;
  filter: saturate(.4);
  pointer-events: none;
  user-select: none;
}
.coming-soon-badge-placeholder { /* spacer */ }
.coming-soon-badge {
  position: absolute;
  top: .875rem; right: .875rem;
  background: rgba(45,212,191,.07);
  border: 1px solid rgba(45,212,191,.22);
  color: #0D9488;
  font-size: .6875rem;
  font-weight: 700;
  padding: .25rem .75rem;
  border-radius: 2rem;
  letter-spacing: .07em;
  text-transform: uppercase;
}

/* 卡片图标（兼容旧版） */
.card-icon {
  width: 3rem;
  height: 3rem;
  border-radius: .75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}
.card-icon-gradient {
  background: rgba(45,212,191,.07);
  border: 1px solid rgba(45,212,191,.18);
}

/* ---------- Hero 组件 ---------- */
/* Hero 发光装饰球 */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(96px);
  pointer-events: none;
}
.orb-blue   { background: radial-gradient(circle, rgba(57,255,182,.20), rgba(57,255,182,.04) 42%, transparent 72%); }
.orb-purple { background: radial-gradient(circle, rgba(157,255,217,.18), rgba(157,255,217,.04) 38%, transparent 70%); }
.orb-cyan   { background: radial-gradient(circle, rgba(20,229,154,.14), rgba(20,229,154,.03) 35%, transparent 70%); }

/* ---------- Hero 网络 SVG + 动效系统 ---------- */
.hero-network-svg {
  width: 100%;
  max-width: 460px;
  overflow: visible;
}

/* ── 轨道动画系统 v2 ── */
/* 轨道节点组：绕中心 (220px 200px) 旋转，各有不同速度和方向 */
.orbit-node-A  { transform-origin: 220px 200px; animation: orbit-cw   7s linear infinite; }
.orbit-node-B  { transform-origin: 220px 200px; animation: orbit-ccw 15s linear infinite; }
.orbit-node-C  { transform-origin: 220px 200px; animation: orbit-cw  10s linear infinite; }
.orbit-node-D  { transform-origin: 220px 200px; animation: orbit-ccw 12s linear infinite; }
.orbit-node-E  { transform-origin: 220px 200px; animation: orbit-cw   9s linear infinite; }

/* 抵消旋转：保持节点内容水平 */
.orbit-counter-A { transform-origin: 220px 105px; animation: orbit-ccw  7s linear infinite; }
.orbit-counter-B { transform-origin: 315px 252px; animation: orbit-cw  15s linear infinite; }
.orbit-counter-C { transform-origin: 220px 295px; animation: orbit-ccw 10s linear infinite; }
.orbit-counter-D { transform-origin: 125px 148px; animation: orbit-cw  12s linear infinite; }
.orbit-counter-E { transform-origin: 320px 120px; animation: orbit-ccw  9s linear infinite; }

/* 节点呼吸（错开节拍）*/
.node-breathe-A { animation: node-breathe 3.2s ease-in-out infinite 0s; }
.node-breathe-B { animation: node-breathe 3.8s ease-in-out infinite .9s; }
.node-breathe-C { animation: node-breathe 3.5s ease-in-out infinite 1.8s; }
.node-breathe-D { animation: node-breathe 4.2s ease-in-out infinite 2.6s; }
.node-breathe-E { animation: node-breathe 3.6s ease-in-out infinite 1.3s; }
@keyframes node-breathe {
  0%,100% { opacity: .82; transform: scale(1); }
  50%      { opacity: 1; transform: scale(1.06); }
}

.core-ring-spin,
.core-ring-spin-rev { display: none; }

@keyframes orbit-cw  { to { transform: rotate( 360deg); } }
@keyframes orbit-ccw { to { transform: rotate(-360deg); } }

/* 中心核脉冲 */
.core-pulse {
  transform-box: fill-box;
  transform-origin: center;
  animation: core-glow 3.2s ease-in-out infinite, core-float 5.2s ease-in-out infinite;
}
@keyframes core-glow {
  0%, 100% {
    opacity: .9;
    filter: drop-shadow(0 0 10px rgba(57,255,182,.40));
  }
  50% {
    opacity: 1;
    filter: drop-shadow(0 0 28px rgba(57,255,182,.70));
  }
}
@keyframes core-float {
  0%,100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-7px) scale(1.04); }
}

/* ---------- 数字统计 ---------- */
.stat-number {
  font-family: 'Space Mono', monospace;
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-text);
  letter-spacing: -.02em;
  text-shadow: none;
}
.stat-number-dark {
  font-family: 'Space Mono', monospace;
  font-size: clamp(1.875rem,4vw,2.75rem);
  font-weight: 700;
  line-height: 1;
  color: var(--color-text);
  letter-spacing: -.02em;
}

/* ---------- 核心理念板块 ---------- */
.section-philosophy {
  background: #FFFFFF;
  position: relative;
  overflow: hidden;
}

/* ---------- AI 法律板块 ---------- */
.section-ai-legal {
  background: #FFFFFF;
  position: relative;
  overflow: hidden;
}
.section-ai-legal::before {
  display: none;
}

/* ---------- 平台优势 ---------- */
.advantage-icon {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ---------- Feature 行（图标+文案横排）---------- */
.feature-row {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-light);
}
.feature-row:last-child { border-bottom: none; }
.feature-row-dark {
  border-bottom-color: rgba(255,255,255,.08);
}

/* ---------- 导航栏 ---------- */
/* (已在上方定义) */

/* ---------- Footer ---------- */
.footer {
  background: #FFFFFF;
  border-top: 1px solid var(--border-light);
  color: var(--color-text-subtle);
  padding: 3.5rem 0 2rem;
}
.footer a {
  color: var(--color-text-subtle);
  text-decoration: none;
  transition: color .2s;
}
.footer a:hover { color: var(--color-text); }
.footer-logo-text {
  font-size: 1.125rem;
  font-weight: 700;
  color: #0F172A;
  margin-bottom: .5rem;
}
.footer-col-title {
  color: var(--color-text-muted);
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.footer-col-links {
  display: flex;
  flex-direction: column;
  gap: .625rem;
}
.footer-col-links a {
  font-size: .9375rem;
}
.footer-divider {
  border: none;
  border-top: 1px solid var(--border-light);
  margin: 1.5rem 0;
}
.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  font-size: .8125rem;
  color: var(--color-text-subtle);
}
@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}
.icp-badge {
  font-size: .8125rem;
  color: var(--color-text-subtle);
  text-decoration: none;
  transition: color .2s;
}
.icp-badge:hover { color: #6B7280; }

/* ---------- 法律免责条 ---------- */
.legal-notice-bar {
  background: #FFFFFF;
  border-top: 1px solid var(--border-light);
  padding: .75rem 1rem;
  text-align: center;
  font-size: .8125rem;
  color: var(--color-text-subtle);
}

/* ---------- 法律长文 ---------- */
.legal-prose {
  max-width: 48rem;
  margin: 0 auto;
  line-height: 2;
  letter-spacing: .01em;
}
.legal-prose h1 {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: .5rem;
}
.legal-prose .effective-date {
  color: var(--color-text-muted);
  font-size: .9375rem;
  margin-bottom: 2.5rem;
}
.legal-prose h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--brand-green);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-left: .75rem;
  border-left: 4px solid var(--brand-green);
}
.legal-prose h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
  margin-top: 1.5rem;
  margin-bottom: .5rem;
}
.legal-prose p { margin-bottom: 1rem; color: #374151; }
.legal-prose ul, .legal-prose ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}
.legal-prose li { margin-bottom: .5rem; color: #374151; }
.legal-prose a { color: var(--brand-green); text-decoration: underline; }

.legal-shell {
  max-width: 72rem;
  margin: 0 auto;
}

.legal-hero-meta {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .75rem;
  margin-top: 1.25rem;
}

.legal-hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: .375rem;
  padding: .4rem .85rem;
  border-radius: 999px;
  background: rgba(45,212,191,.07);
  border: 1px solid rgba(45,212,191,.18);
  color: #0D9488;
  font-size: .8125rem;
  font-weight: 600;
}

.info-list {
  display: grid;
  gap: .875rem;
}

.info-list-row {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding-bottom: .875rem;
  border-bottom: 1px solid var(--border-light);
}

.info-list-row:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.info-list-key {
  min-width: 5.5rem;
  color: var(--color-text-subtle);
  font-size: .8125rem;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.info-list-value {
  color: var(--color-text);
  font-size: .9375rem;
  line-height: 1.75;
}

.info-list-value a {
  color: var(--brand-green);
  text-decoration: none;
}

.legal-summary-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.legal-summary-card {
  background: #FFFFFF;
  border: 1px solid #E6F7F5;
  border-radius: .875rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
}

.legal-summary-card h3 {
  margin: 0 0 .625rem;
  font-size: 1rem;
  color: var(--color-text);
}

.legal-summary-card p,
.legal-summary-card ul {
  margin: 0;
  color: var(--color-text-muted);
  font-size: .9375rem;
  line-height: 1.8;
}

.legal-summary-card ul {
  padding-left: 1.25rem;
}

.legal-anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.25rem;
}

.legal-anchor-nav a {
  display: inline-flex;
  align-items: center;
  padding: .55rem .95rem;
  border-radius: 999px;
  border: 1px solid #E6F7F5;
  background: #FFFFFF;
  color: #374151;
  text-decoration: none;
  font-size: .875rem;
  font-weight: 500;
  transition: border-color .2s, color .2s, background .2s;
}

.legal-anchor-nav a:hover {
  border-color: #2DD4BF;
  color: #0D9488;
  background: #F7FFFE;
}

.support-strip {
  background: linear-gradient(135deg, rgba(45,212,191,.09), rgba(8,145,178,.06));
  border: 1px solid rgba(45,212,191,.16);
  border-radius: 1rem;
  padding: 1rem 1.125rem;
  color: var(--color-text-muted);
  font-size: .9375rem;
  line-height: 1.75;
}

@media (min-width: 768px) {
  .legal-summary-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- FAQ 折叠 ---------- */
.faq-item { border-bottom: 1px solid var(--border-light); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 0;
  cursor: pointer;
  font-weight: 500;
  color: var(--color-text);
  transition: color .2s;
  gap: 1rem;
  user-select: none;
}
.faq-question:hover { color: var(--brand-green); }
.faq-question .chevron {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  transition: transform .3s;
  color: var(--color-text-muted);
}
.faq-item.open .faq-question .chevron { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
}
.faq-item.open .faq-answer {
  max-height: 500px;
  padding-bottom: 1.25rem;
}
.faq-answer p { color: var(--color-text-muted); line-height: 1.75; }

/* ---------- 步骤列表 ---------- */
.step-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}
.step-num {
  width: 2rem; height: 2rem;
  border-radius: 50%;
  background: var(--brand-green);
  color: white;
  font-weight: 700;
  font-size: .875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: .15rem;
}
.step-num-dark {
  width: 2rem; height: 2rem;
  border-radius: 50%;
  background: #00C896;
  color: #FFFFFF;
  font-weight: 700;
  font-size: .875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: .15rem;
}

/* ---------- 动画 ---------- */
@keyframes float-y {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}
.float-anim      { animation: none; }
.float-anim-slow { animation: none; }

@keyframes pulse-dot {
  0%,100% { opacity: 1;  box-shadow: 0 0 6px currentColor; }
  50%      { opacity: .65; box-shadow: 0 0 3px currentColor; }
}
.pulse-dot { animation: pulse-dot 3s ease-in-out infinite; }

/* ---------- 打印 ---------- */
@media print {
  .navbar,.mobile-menu,.footer,.legal-notice-bar { display: none !important; }
  body { background: #fff; font-size: 11pt; }
  .legal-prose { max-width: 100%; }
}

/* ══════════════════════════════════════════════
   v11 升级：技术卡片 / 荧光条悬停 / 球体自转 / 子页居中 / 字色统一
   ══════════════════════════════════════════════ */

/* ---------- 文字色统一：只用荧光绿高亮，其余近黑 ---------- */
:root {
  --color-text-muted:  #1A1A1A;   /* 正文灰 → 深近黑 */
  --color-text-subtle: #3D3D3D;   /* 次级 → 稍灰的黑 */
}
/* 覆盖 Tailwind/内联 #374151 灰 */
[style*="color:#374151"],
[style*="color: #374151"] { color: #1A1A1A !important; }
/* 覆盖子页 Hero 内联白字 */
.gradient-hero [style*="color:#374151"],
.gradient-hero [style*="color: #374151"] { color: #1A1A1A !important; }

/* ---------- 通用荧光条悬停系统 ---------- */
/* 为所有卡片加 relative + overflow 以支持 ::before bar */
.glass-card {
  position: relative;
  overflow: hidden;
}
/* 荧光条基底（默认隐藏） */
.card::before,
.glass-card::before,
.agent-card::before,
.tech-card::before,
.home-intro-card::before,
.home-dual-card::before,
.home-company-panel::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--brand-green) 50%, transparent 100%);
  opacity: 0;
  transition: opacity .3s ease;
  border-radius: 0 0 1rem 1rem;
}
/* 悬停时显示荧光条 */
.card:hover::before,
.glass-card:hover::before,
.agent-card:hover::before,
.tech-card:hover::before,
.home-intro-card:hover::before,
.home-dual-card:hover::before,
.home-company-panel:hover::before { opacity: 1; }

/* grad-border-card 悬停增强 */
.grad-border-card {
  transition: box-shadow .25s;
  cursor: default;
}
.grad-border-card:hover {
  box-shadow: 0 0 0 1px rgba(57,255,182,.30), 0 8px 24px rgba(57,255,182,.12);
}

/* ---------- 技术能力模块卡片（tech-card）---------- */
.tech-card {
  background: #FFFFFF;
  border-radius: 1.125rem;
  border: 1px solid rgba(57,255,182,.12);
  border-top: 3px solid var(--brand-green);
  padding: 2rem 1.75rem 1.75rem;
  position: relative;
  overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease, border-top-color .25s;
  box-shadow: 0 4px 16px rgba(16,16,16,.035);
}
.tech-card-num {
  font-family: 'Space Mono', monospace;
  font-size: 5rem;
  font-weight: 700;
  color: rgba(57,255,182,.09);
  position: absolute;
  top: -.25rem; right: .875rem;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}
.tech-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 0 1px rgba(57,255,182,.22), 0 16px 40px rgba(57,255,182,.08);
  border-top-color: var(--brand-green);
}
.tech-card .icon-box { margin-bottom: 1.25rem; }
.tech-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: .625rem;
}
.tech-card p {
  font-size: .875rem;
  line-height: 1.75;
  color: var(--color-text-subtle);
  margin-bottom: 0;
}

/* ---------- 球体自转高光 ---------- */
/* 高光组绕球心 (220,200) 顺时针自转 */
.core-spin-specular {
  transform-origin: 220px 200px;
  animation: orbit-cw 6s linear infinite;
}

/* ---------- 子页面 Hero 居中 ---------- */
.page-hero-title { text-align: center; }

/* Hero 区内容容器自动居中 */
.gradient-hero .max-w-4xl,
.gradient-hero .max-w-3xl {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

/* 子页 Hero 副文案同步居中 */
.gradient-hero .max-w-4xl > p,
.gradient-hero .max-w-3xl > p {
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Hero 字体宽松 ---------- */
/* 首页 Hero H1 更宽松 */
#hero h1 {
  line-height: 1.22;
  letter-spacing: -.02em;
  font-weight: 700;
}
/* 首页 Hero 副标题 */
#hero > .container p.text-lg {
  line-height: 2.0;
  font-size: 1rem;
  color: var(--color-text-subtle);
}

/* ---------- 响应式：小屏技术卡片 ---------- */
@media (max-width: 767px) {
  #hero {
    min-height: auto;
  }
  #hero .container {
    padding-top: 3rem;
    padding-bottom: 3rem;
  }
  #hero .grid {
    gap: 2rem;
  }
  #hero h1 {
    font-size: clamp(2.3rem, 11vw, 3.2rem) !important;
    margin-bottom: 1.5rem !important;
  }
  #hero p {
    max-width: none !important;
    margin-bottom: 0 !important;
  }
  .hero-canvas {
    width: min(88vw, 420px);
    margin: .5rem auto 0;
  }
  .tech-card { padding: 1.5rem 1.25rem; }
  .tech-card-num { font-size: 3.5rem; }
  .home-block { padding: 4rem 0; }
  .home-assistant-title,
  .about-hero-copy {
    white-space: normal;
  }
  .home-intro-grid,
  .home-agent-grid,
  .home-dual-grid,
  .home-editorial,
  .home-company-panel {
    grid-template-columns: 1fr;
  }
  .home-editorial {
    gap: 1.5rem;
    margin-bottom: 1.75rem;
  }
  .home-cta-panel {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
  }
  .home-company-panel {
    padding: 1.5rem;
  }
  .home-company-title {
    white-space: normal;
    font-size: clamp(1.7rem, 6vw, 2.2rem);
  }
  .home-company-points {
    border-left: none;
    border-top: 1px solid var(--border-light);
    padding-left: 0;
  }
  .home-kicker {
    font-size: .75rem;
    letter-spacing: .06em;
  }
  .home-hero-text {
    font-size: 1rem;
    line-height: 1.9;
  }
  .page-hero-title {
    font-size: clamp(2rem, 9vw, 2.8rem);
  }
}