/* ============================================================
   Ozo Global 官网样式
   设计语言：Ozon 蓝紫渐变 · 现代 SaaS · 圆角卡片 · 伪 3D
   ============================================================ */

:root {
  --blue: #005BFF;
  --blue-600: #0B44C7;
  --blue-300: #4C8DFF;
  --violet: #6D28D9;
  --violet-400: #7C3AED;
  --ink: #0A2540;
  --ink-soft: #425466;
  --muted: #8792A2;
  --bg: #ffffff;
  --bg-alt: #f6f9fc;
  --line: #E6EBF1;
  --radius: 22px;
  --radius-sm: 14px;
  --shadow-card: 0 24px 60px -28px rgba(11, 63, 184, 0.35);
  --shadow-soft: 0 10px 30px -14px rgba(11, 63, 184, 0.28);
  --container: 1240px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 600; font-size: 15px; line-height: 1;
  padding: 12px 22px; border-radius: 999px; border: 1.5px solid transparent;
  cursor: pointer; transition: transform 0.2s var(--ease), box-shadow 0.25s var(--ease), background 0.2s, color 0.2s;
  white-space: nowrap;
}
.btn svg { transition: transform 0.25s var(--ease); }
.btn-lg { padding: 15px 28px; font-size: 16px; }
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--blue-300), var(--blue));
  color: #fff; box-shadow: 0 12px 26px -10px rgba(0, 91, 255, 0.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 34px -12px rgba(0, 91, 255, 0.7); }
.btn-primary:hover svg { transform: translateY(3px); }

.btn-violet {
  background: linear-gradient(135deg, var(--violet-400), var(--violet));
  color: #fff; box-shadow: 0 12px 26px -10px rgba(109, 40, 217, 0.55);
}
.btn-violet:hover { transform: translateY(-2px); box-shadow: 0 18px 34px -12px rgba(109, 40, 217, 0.65); }

.btn-outline { background: transparent; color: var(--blue); border-color: var(--line); }
.btn-outline:hover { border-color: var(--blue-300); background: rgba(0, 91, 255, 0.05); }

/* Stripe 式次要按钮：文字 + 箭头，悬停箭头右移 */
.btn-quiet { background: rgba(255,255,255,0.7); color: var(--ink); border-color: rgba(10,37,64,0.08); backdrop-filter: blur(6px); }
.btn-quiet:hover { background: #fff; transform: translateY(-2px); box-shadow: 0 12px 26px -14px rgba(10,37,64,0.4); }
.btn-quiet:hover svg, .btn-primary:hover svg { transform: translateX(3px); }

.btn-ghost { background: transparent; color: var(--ink); padding: 10px 16px; }
.btn-ghost:hover { color: var(--blue); }

.btn-dark { background: var(--ink); color: #fff; padding: 11px 22px; }
.btn-dark:hover { transform: translateY(-2px); background: #0d2a5c; box-shadow: 0 14px 28px -12px rgba(10,31,68,0.5); }

.btn-light { background: #fff; color: var(--blue); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 16px 30px -12px rgba(0,0,0,0.3); }
.btn-light:hover svg { transform: translateY(3px); }

.btn-outline-light { background: rgba(255,255,255,0.12); color: #fff; border-color: rgba(255,255,255,0.5); }
.btn-outline-light:hover { background: rgba(255,255,255,0.2); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease), backdrop-filter 0.3s;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  box-shadow: 0 1px 0 rgba(231, 236, 246, 0.9);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 800; font-size: 21px; letter-spacing: -0.02em; }
.brand-img { height: 34px; width: auto; display: block; }
.brand-mark { display: inline-flex; }
.brand-accent { color: var(--blue); }
.site-footer .brand-img { height: 30px; }
.main-nav { display: flex; gap: 30px; }
.main-nav a { font-weight: 500; color: var(--ink-soft); position: relative; padding: 6px 0; transition: color 0.2s; }
.main-nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px;
  background: linear-gradient(90deg, var(--blue-300), var(--violet)); border-radius: 2px;
  transition: width 0.25s var(--ease);
}
.main-nav a:hover { color: var(--ink); }
.main-nav a:hover::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: 12px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2.4px; background: var(--ink); border-radius: 2px; transition: transform 0.3s var(--ease), opacity 0.3s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.4px) rotate(-45deg); }

.mobile-nav {
  display: none; flex-direction: column; gap: 4px; padding: 12px 24px 24px;
  background: rgba(255,255,255,0.97); backdrop-filter: blur(16px);
  box-shadow: var(--shadow-soft); max-height: 0; overflow: hidden; transition: max-height 0.35s var(--ease);
}
.mobile-nav a { padding: 12px 0; font-weight: 600; color: var(--ink-soft); border-bottom: 1px solid var(--line); }
.mobile-nav .mobile-cta { margin-top: 12px; color: #fff; text-align: center; border: 0; border-radius: 999px; background: linear-gradient(135deg, var(--blue-300), var(--blue)); }
.mobile-nav.open { max-height: 460px; }

/* ---------- 通用区块 ---------- */
.section { padding: 128px 0; position: relative; }
/* Stripe 式倾斜切边分区 */
.section-alt { background: transparent; overflow: hidden; }
.section-alt::before {
  content: ""; position: absolute; left: 0; right: 0; top: -60px; bottom: -60px; z-index: -1;
  background: linear-gradient(180deg, #f6f9fc, #eef3fb);
  transform: skewY(-3deg); transform-origin: 0 0;
}
.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12.5px; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--blue); margin-bottom: 22px;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; border-radius: 2px; background: linear-gradient(90deg, var(--blue), var(--violet)); }
.eyebrow-violet { color: var(--violet); }
.eyebrow-violet::before { background: linear-gradient(90deg, var(--violet), var(--violet-400)); }
.section-head .eyebrow { justify-content: center; }
.section-title { font-size: clamp(30px, 4.2vw, 48px); font-weight: 850; letter-spacing: -0.03em; line-height: 1.16; }
.section-lead { margin-top: 20px; color: var(--ink-soft); font-size: 17.5px; line-height: 1.7; }
.gradient-text {
  background: linear-gradient(120deg, var(--blue), var(--violet));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- Hero（左文案 + 右侧流动丝带） ---------- */
.hero { position: relative; padding: 172px 0 120px; overflow: hidden; }
.hero::after {
  /* 底部向白色自然过渡，衔接下一板块 */
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 220px; z-index: -1;
  background: linear-gradient(180deg, rgba(255,255,255,0), #ffffff 82%);
  pointer-events: none;
}
.hero-ribbon {
  position: absolute; top: -100px; right: -60px; width: 66%; height: 820px; z-index: -1;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(135% 118% at 96% 24%, #000 40%, transparent 80%);
  mask-image: radial-gradient(135% 118% at 96% 24%, #000 40%, transparent 80%);
}
.ribbon-svg { width: 100%; height: 100%; }
.ribbon-band { transform-box: fill-box; transform-origin: center; will-change: transform; }
.band-1 { animation: ribbonFlow 18s ease-in-out infinite; }
.band-2 { animation: ribbonFlow 22s ease-in-out infinite reverse; }
.band-3 { animation: ribbonFlow2 26s ease-in-out infinite; }
.band-4 { animation: ribbonFlow2 20s ease-in-out infinite reverse; }
@keyframes ribbonFlow {
  0%,100% { transform: translate(0,0) rotate(0deg) scale(1); }
  50% { transform: translate(-3%,2%) rotate(-4deg) scale(1.06); }
}
@keyframes ribbonFlow2 {
  0%,100% { transform: translate(0,0) rotate(0deg) scale(1.04); }
  50% { transform: translate(2%,-3%) rotate(5deg) scale(1.1); }
}

.hero-inner { position: relative; }
.hero-copy { max-width: 660px; }
.hero-kicker { font-size: 14px; font-weight: 600; color: var(--ink-soft); margin-bottom: 22px; }
.hero-kicker span { color: var(--blue); }
.hero-title { font-size: clamp(40px, 5.6vw, 68px); font-weight: 850; line-height: 1.06; letter-spacing: -0.04em; color: var(--ink); }
.hero-title-grad {
  background: linear-gradient(100deg, #005BFF, #6D28D9 55%, #06B6D4);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { margin-top: 28px; font-size: 19px; line-height: 1.72; color: var(--ink-soft); max-width: 560px; }
.hero-actions { margin-top: 38px; display: flex; gap: 16px; flex-wrap: wrap; }

/* 产品窗口卡片 */
.hero-window-wrap { position: relative; margin-top: 72px; padding-bottom: 20px; }
.app-window {
  max-width: 960px; margin: 0 auto; background: #fff; border-radius: 18px;
  box-shadow: 0 50px 100px -32px rgba(10,37,64,0.42), 0 0 0 1px rgba(10,37,64,0.04);
  overflow: hidden;
}
.app-bar { display: flex; align-items: center; gap: 8px; padding: 14px 18px; border-bottom: 1px solid var(--line); background: #fbfcfe; }
.app-bar .dot { width: 11px; height: 11px; border-radius: 50%; background: #E2E8F2; }
.app-bar .dot:nth-child(1) { background: #FF5F57; opacity: 0.75; }
.app-bar .dot:nth-child(2) { background: #FEBC2E; opacity: 0.75; }
.app-bar .dot:nth-child(3) { background: #28C840; opacity: 0.75; }
.app-url { margin-left: 14px; font-size: 12.5px; color: var(--muted); font-weight: 500; }
.app-body { padding: 20px 24px; background: linear-gradient(180deg, #fbfcff, #fff); }
.app-body .scene { max-width: 620px; margin: 0 auto; }

/* ---------- 3D 场景 ---------- */
.scene { width: 100%; max-width: 560px; margin-left: auto; }
.float-slow { animation: floaty 7s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.float-mid  { animation: floaty 5.5s ease-in-out infinite; animation-delay: -1.5s; transform-box: fill-box; transform-origin: center; }
.float-fast { animation: floaty 4.5s ease-in-out infinite; animation-delay: -0.8s; transform-box: fill-box; transform-origin: center; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}
.chip { animation-name: floaty-chip; }
@keyframes floaty-chip {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-10px) rotate(1deg); }
}

/* ---------- 合作 Logo 滚动 ---------- */
.logos { padding: 44px 0 20px; }
.logos-title { text-align: center; color: var(--muted); font-size: 14.5px; font-weight: 600; margin-bottom: 30px; letter-spacing: 0.02em; }
.logos-marquee {
  overflow: hidden; padding: 20px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.logos-row { display: flex; align-items: center; gap: 56px; width: max-content; animation: logoScroll 40s linear infinite; }
.logos-marquee:hover .logos-row { animation-play-state: paused; }
@keyframes logoScroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.brand-logo {
  flex: none; display: inline-flex; align-items: center; gap: 12px;
  color: #6b7a90; font-weight: 700; font-size: 18px; letter-spacing: -0.01em;
  opacity: 0.82; transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), color 0.25s;
}
.brand-logo svg { width: 24px; height: 24px; }
.brand-logo img {
  height: 46px; width: auto; max-width: 220px; object-fit: contain; display: block;
}
.brand-logo:hover { opacity: 1; color: var(--blue); transform: translateY(-2px); }
.brand-logo-name { white-space: nowrap; }

/* ---------- Features ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature-card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 24px; transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.3s;
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ""; position: absolute; inset: 0; opacity: 0;
  background: radial-gradient(120% 80% at 50% 0%, rgba(0,91,255,0.06), transparent 60%);
  transition: opacity 0.35s;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-card); border-color: transparent; }
.feature-card:hover::before { opacity: 1; }
.feature-icon { height: 84px; margin-bottom: 18px; }
.feature-icon svg { transition: transform 0.4s var(--ease); }
.feature-card:hover .feature-icon svg { transform: translateY(-4px) scale(1.05); }
.feature-tag { font-size: 12px; font-weight: 700; color: var(--blue); letter-spacing: 0.05em; text-transform: uppercase; }
.feature-card h3 { font-size: 19px; margin: 8px 0 10px; letter-spacing: -0.01em; }
.feature-card p { color: var(--ink-soft); font-size: 15px; }

/* ---------- Workflow ---------- */
.workflow-track { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.workflow-step { position: relative; background: var(--bg); border-radius: var(--radius); padding: 30px 24px; box-shadow: var(--shadow-soft); }
.step-num {
  font-size: 40px; font-weight: 850; letter-spacing: -0.03em; line-height: 1;
  background: linear-gradient(120deg, var(--blue), var(--violet));
  -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: 14px;
}
.step-body h3 { font-size: 19px; margin-bottom: 8px; }
.step-body p { color: var(--ink-soft); font-size: 15px; }
.step-arrow { position: absolute; right: -22px; top: 50%; transform: translateY(-50%); z-index: 2; }

/* ---------- 实时 AI 复核计数（浅色主题） ---------- */
.reviewed { position: relative; overflow: hidden; padding: 104px 0; text-align: center; background: linear-gradient(180deg, #ffffff 0%, #f2f6ff 60%, #eaf1ff 100%); color: var(--ink); }
.reviewed-bg { position: absolute; inset: 0; z-index: 0; }
.rv-blob { position: absolute; border-radius: 50%; filter: blur(100px); opacity: 0.28; }
.rv-blob-1 { width: 520px; height: 520px; top: -200px; left: -60px; background: radial-gradient(circle, #7AB0FF, transparent 70%); }
.rv-blob-2 { width: 460px; height: 460px; bottom: -220px; right: -40px; background: radial-gradient(circle, #C4B5FD, transparent 70%); }
.reviewed-inner { position: relative; z-index: 1; }
.reviewed-eyebrow {
  position: relative; z-index: 1;
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13px; font-weight: 700; letter-spacing: 0.14em;
  color: var(--blue);
}
.reviewed-eyebrow::before {
  content: ""; position: absolute; left: 50%; top: 50%; z-index: -1;
  width: 200px; height: 200px; border-radius: 50%; transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(76,141,255,0.24), rgba(124,58,237,0.1) 45%, transparent 72%);
  filter: blur(6px); animation: softBreath 3.4s ease-in-out infinite;
}
@keyframes softBreath {
  0%, 100% { transform: translate(-50%, -50%) scale(0.82); opacity: 0.5; }
  50%      { transform: translate(-50%, -50%) scale(1.18); opacity: 1; }
}
.live-dot { width: 9px; height: 9px; border-radius: 50%; background: #12B76A; box-shadow: 0 0 0 0 rgba(18,183,106,0.5); animation: livePulse 1.8s ease-out infinite; }
@keyframes livePulse { 0% { box-shadow: 0 0 0 0 rgba(18,183,106,0.5); } 100% { box-shadow: 0 0 0 12px rgba(18,183,106,0); } }

/* 数字：逐位 odometer，只有变化的数字滚动 */
.reviewed-number {
  display: flex; align-items: flex-end; justify-content: center;
  margin: 30px auto 20px; color: #0B49D0;
  font-weight: 850; line-height: 1.1; letter-spacing: -0.03em;
  font-size: clamp(48px, 9.4vw, 128px);
  font-variant-numeric: tabular-nums; font-feature-settings: "tnum" 1;
}
.reviewed-number .odo { display: inline-block; height: 1.1em; overflow: hidden; }
.reviewed-number .odo-track { display: block; will-change: transform; }
.reviewed-number .odo-d { display: block; height: 1.1em; line-height: 1.1; text-align: center; }
.reviewed-number .odo-sep { display: inline-block; height: 1.1em; line-height: 1.1; }
.reviewed-label { font-size: clamp(17px, 2.4vw, 23px); font-weight: 600; color: var(--ink); }
.reviewed-label strong { background: linear-gradient(100deg, #005BFF, #6D28D9); -webkit-background-clip: text; background-clip: text; color: transparent; }
.reviewed-sub { margin-top: 10px; font-size: 15px; color: var(--ink-soft); }

/* ---------- Backbone 数据展示 + 动态针尖 ---------- */
.backbone {
  position: relative; overflow: hidden; padding-top: 110px;
  background: linear-gradient(180deg, #ffffff 0%, #eaf1ff 45%, #dce8ff 100%);
}
.backbone-head { text-align: center; }
.backbone-head h2 { font-size: clamp(30px, 4.4vw, 52px); font-weight: 850; letter-spacing: -0.035em; line-height: 1.12; color: var(--ink); }
.backbone-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  max-width: 1000px; margin: 56px auto 0; padding: 34px 0;
  border-top: 1px solid rgba(10,37,64,0.1);
}
.bstat {
  position: relative; text-align: center; padding: 14px 10px 20px; border-radius: 16px;
  cursor: default; outline: none;
  transition: transform 0.35s var(--ease), background 0.35s, box-shadow 0.35s var(--ease);
}
.bstat-num {
  font-size: clamp(30px, 3.6vw, 46px); font-weight: 850; letter-spacing: -0.025em; line-height: 1;
  color: #8095b8; transition: color 0.35s var(--ease), transform 0.35s var(--ease);
}
.bstat-label { margin-top: 12px; font-size: 14.5px; color: var(--ink-soft); transition: color 0.3s; }
.bstat-underline {
  position: absolute; left: 50%; bottom: 10px; transform: translateX(-50%);
  width: 0; height: 3px; border-radius: 3px;
  background: linear-gradient(90deg, #22D3EE, #3B82F6, #7C3AED);
  transition: width 0.4s var(--ease);
}
.bstat:hover, .bstat:focus-visible {
  transform: translateY(-6px); background: #fff;
  box-shadow: 0 22px 44px -22px rgba(30,58,138,0.35);
}
.bstat:hover .bstat-num, .bstat:focus-visible .bstat-num {
  transform: scale(1.06);
  background: linear-gradient(100deg, #005BFF, #7C3AED 60%, #06B6D4);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.bstat:hover .bstat-label, .bstat:focus-visible .bstat-label { color: var(--ink); }
.bstat:hover .bstat-underline, .bstat:focus-visible .bstat-underline { width: 44px; }

.burst-wrap { position: relative; width: 100%; height: 460px; margin-top: 10px; }
#burstCanvas { display: block; width: 100%; height: 100%; }
@media (max-width: 720px) { .burst-wrap { height: 300px; } }

/* ---------- ERP ---------- */
.erp-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.erp-list { list-style: none; margin: 26px 0 30px; display: grid; gap: 16px; }
.erp-list li { display: flex; gap: 14px; align-items: flex-start; }
.erp-check {
  flex: none; width: 26px; height: 26px; border-radius: 8px; display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--violet-400), var(--violet)); margin-top: 2px;
}
.erp-list strong { display: block; font-size: 16px; }
.erp-list span { color: var(--ink-soft); font-size: 14.5px; }

/* ---------- Cases ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease); }
.case-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-card); }
.case-media { height: 168px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #EAF1FF, #F3ECFF); }
.case-placeholder .case-media svg { opacity: 0.55; }
.case-body { padding: 24px; }
.case-badge { display: inline-block; font-size: 12px; font-weight: 700; color: var(--violet); background: rgba(109,40,217,0.09); padding: 5px 12px; border-radius: 999px; }
.case-body h3 { font-size: 18px; margin: 12px 0 8px; }
.case-body p { color: var(--ink-soft); font-size: 14.5px; }
.cases-cta { text-align: center; margin-top: 40px; color: var(--ink-soft); font-size: 16px; }
.cases-cta a { color: var(--blue); font-weight: 700; }

/* ---------- CTA ---------- */
.cta-card {
  position: relative; overflow: hidden; border-radius: 30px; padding: 68px 40px; text-align: center;
  background: linear-gradient(125deg, #062a86, #0B44C7 55%, #4C2A9E); color: #fff;
  box-shadow: var(--shadow-card); padding: 84px 40px;
}
.cta-blob { position: absolute; border-radius: 50%; filter: blur(50px); opacity: 0.5; }
.cta-blob-1 { width: 320px; height: 320px; top: -140px; left: -60px; background: #7AB0FF; }
.cta-blob-2 { width: 300px; height: 300px; bottom: -160px; right: -40px; background: #A78BFA; }
.cta-content { position: relative; z-index: 1; }
.cta-eyebrow { display: inline-block; font-size: 12.5px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: rgba(255,255,255,0.75); margin-bottom: 20px; }
.cta-content h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 850; letter-spacing: -0.025em; line-height: 1.18; }
.cta-content p { margin: 18px auto 32px; font-size: 17.5px; color: rgba(255,255,255,0.9); max-width: 600px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta-mail { margin-top: 26px !important; font-size: 14px !important; color: rgba(255,255,255,0.66) !important; letter-spacing: 0.02em; }

/* ---------- Footer ---------- */
.site-footer { background: #071233; color: #C7D2EC; padding: 64px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 30px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-brand .brand { color: #fff; }
.footer-brand .brand-accent { color: var(--blue-300); }
.footer-desc { margin-top: 16px; color: #8FA0C8; font-size: 14.5px; max-width: 340px; }
.footer-mail { display: inline-block; margin-top: 16px; color: var(--blue-300); font-weight: 600; font-size: 14.5px; }
.footer-mail:hover { color: #fff; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-col a { display: block; color: #8FA0C8; font-size: 14.5px; padding: 5px 0; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 22px; font-size: 13px; color: #6B7CA6; flex-wrap: wrap; gap: 8px; }

/* ---------- 滚动揭示动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .feature-grid, .workflow-track { grid-template-columns: repeat(2, 1fr); }
  .step-arrow { display: none; }
  .erp-inner { grid-template-columns: 1fr; }
  .erp-visual { order: -1; }
  .scene { margin: 0 auto; max-width: 460px; }
  .backbone-stats { grid-template-columns: repeat(2, 1fr); gap: 30px 20px; }
  .logos-wall { grid-template-columns: repeat(2, 1fr); gap: 26px 12px; }
  .hero-ribbon { width: 90%; opacity: 0.5; top: -40px; }
  .case-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .container { padding: 0 20px; }
  .main-nav, .header-actions { display: none; }
  .nav-toggle { display: flex; }
  .mobile-nav { display: flex; }
  .header-inner { height: 62px; }
  .brand { font-size: 19px; gap: 9px; }
  .brand-img { height: 30px; }

  .section { padding: 74px 0; }
  .section-head { margin-bottom: 40px; }

  /* Hero */
  .hero { padding: 116px 0 56px; }
  .hero-ribbon { width: 130%; height: 560px; right: -30%; top: -80px; opacity: 0.42; }
  .hero-sub { font-size: 16.5px; }
  .hero-actions { gap: 12px; }
  .hero-actions .btn { flex: 1 1 auto; justify-content: center; }

  /* 网格全部单列 / 双列 */
  .feature-grid, .workflow-track { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-brand { grid-column: 1 / -1; }

  /* Logo 滚动 */
  .logos-row { gap: 38px; }
  .brand-logo { font-size: 16px; }
  .brand-logo img { height: 40px; }

  /* 产品窗口 */
  .hero-window-wrap { margin-top: 48px; }
  .app-body { padding: 14px 14px; }

  /* 实时计数 */
  .reviewed { padding: 68px 0; }
  .reviewed-number { font-size: clamp(40px, 15vw, 76px); }

  /* 数据 + 针尖 */
  .backbone { padding-top: 74px; }
  .backbone-stats { margin-top: 40px; padding: 26px 0; }

  /* ERP */
  .erp-inner { gap: 32px; }

  /* CTA */
  .cta-card { padding: 52px 22px; border-radius: 24px; }
  .cta-content p { font-size: 16px; }
  .cta-actions .btn { flex: 1 1 auto; justify-content: center; }

  .footer-bottom { justify-content: center; text-align: center; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .backbone-stats { grid-template-columns: 1fr; gap: 18px; }
  .bstat { padding: 10px; display: flex; align-items: baseline; justify-content: center; gap: 10px; }
  .bstat-label { margin-top: 0; }
  .bstat-underline { display: none; }
  .hero-title { font-size: clamp(32px, 9vw, 42px); }
  .section-lead { font-size: 16px; }
  .reviewed-label { font-size: 16px; }
  .burst-wrap { height: 240px; }
}

/* ---------- 无障碍：减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
}