/* 雾透科技企业官网 — 全局设计系统 v3.0
 * 参考腾讯 Copilot Work 站设计风格，纯白背景重构
 * 字体：Alimama ShuHeiTi（标题） / Alimama FangYuanTi VF（正文/英文）
 */

/* ===== 字体加载 ===== */
@font-face {
  font-family: 'Alimama ShuHeiTi';
  src: url('https://acc-1258344699.cos.accelerate.myqcloud.com/web/website/assets/AlimamaShuHeiTi-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Alimama FangYuanTi VF';
  src: url('https://acc-1258344699.cos.accelerate.myqcloud.com/web/website/assets/AlimamaFangYuanTiVF-Thin.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  /* 品牌色 */
  --wuto-red: #9A3412;
  --wuto-red-900: #6f240c;
  --wuto-red-700: #7c2d10;
  --wuto-red-600: #9A3412;
  --wuto-red-500: #c44a1f;
  --wuto-red-100: #f7e8e0;
  --wuto-red-50: #fdf6f2;

  --gold: #c9a227;
  --gold-700: #a07d1c;
  --gold-500: #e0bc4a;
  --gold-100: #fcf6e0;
  --gold-50: #fffdf5;

  /* 功能色 */
  --green: #16a34a;
  --green-500: #22c55e;
  --green-100: #dcfce7;
  --green-50: #f0fdf4;

  --blue: #2563eb;
  --blue-500: #3b82f6;
  --blue-100: #dbeafe;
  --blue-50: #eff6ff;

  --purple: #7c3aed;
  --purple-100: #ede9fe;
  --purple-50: #faf5ff;

  --cyan: #0891b2;
  --cyan-100: #cffafe;
  --cyan-50: #ecfeff;

  /* 腾讯风白底中性色 */
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-soft: #f7f7f8;
  --surface-alt: #fafafa;
  --text: #1d2020;
  --text-heading: #000000;
  --text-secondary: #4a4a4a;
  --text-muted: #7a7a7a;
  --text-tertiary: #999999;
  --border: rgba(0, 0, 0, 0.06);
  --border-strong: rgba(0, 0, 0, 0.10);
  --divider: rgba(0, 0, 0, 0.06);

  /* 阴影 */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 18px 56px rgba(0, 0, 0, 0.08);
  --shadow-glow-red: 0 0 40px rgba(154, 52, 18, 0.12);
  --shadow-glow-gold: 0 0 40px rgba(201, 162, 39, 0.12);

  /* 圆角 */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  /* 字体系统 */
  --font-display: "Alimama ShuHeiTi", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-body: "Alimama FangYuanTi VF", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* 字号系统（参考腾讯 Copilot 的 clamp 比例） */
  --text-xs: 12px;
  --text-sm: 13px;
  --text-base: 15px;
  --text-lg: 17px;
  --text-xl: 20px;
  --text-2xl: 24px;
  --text-3xl: 30px;
  --text-4xl: 40px;
  --text-5xl: 56px;

  /* 行高 */
  --leading-none: 1;
  --leading-tight: 1.1;
  --leading-snug: 1.3;
  --leading-normal: 1.6;
  --leading-relaxed: 1.8;

  /* 间距 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 100px;

  /* 容器 */
  --container: 1200px;
  --container-narrow: 960px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }

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

::selection {
  background: var(--wuto-red-100);
  color: var(--wuto-red-700);
}

/* ===== 导航 ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 72px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  display: flex;
  transition: all 0.3s ease;
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-sm);
  height: 64px;
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-8);
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--text-heading);
  letter-spacing: 0.5px;
  transition: opacity 0.2s;
  flex-shrink: 0;
}

.logo:hover { opacity: 0.8; }

.logo img {
  height: 40px;
  width: 40px;
  object-fit: contain;
  border-radius: 50%;
}

.nav-links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
  align-items: center;
  justify-content: center;
  flex: 1;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-family: var(--font-display);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 700;
  transition: color 0.25s;
  position: relative;
  padding: 6px 0;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active { color: var(--wuto-red); }

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--wuto-red);
  transition: width 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  border-radius: 2px;
}

.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all 0.3s ease;
}

.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px; left: 0; right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: var(--space-6);
  z-index: 999;
  box-shadow: var(--shadow-lg);
}

.mobile-menu a {
  display: block;
  padding: var(--space-4) 0;
  font-size: 15px;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.mobile-menu a.active { color: var(--wuto-red); }

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--wuto-red);
  color: white;
  box-shadow: 0 4px 16px rgba(154, 52, 18, 0.22);
}

.btn-primary:hover {
  background: var(--wuto-red-700);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(154, 52, 18, 0.28);
}

.btn-outline {
  background: transparent;
  color: var(--wuto-red);
  border: 1px solid var(--wuto-red);
}

.btn-outline:hover {
  background: var(--wuto-red-50);
}

/* ===== 首页 Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--bg);
  padding: 160px var(--space-6) 60px;
}

.butterfly-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse at 80% 10%, rgba(154, 52, 18, 0.04) 0%, transparent 35%),
    radial-gradient(ellipse at 20% 30%, rgba(201, 162, 39, 0.05) 0%, transparent 40%),
    radial-gradient(ellipse at 60% 80%, rgba(34, 197, 94, 0.03) 0%, transparent 45%),
    radial-gradient(ellipse at 30% 85%, rgba(59, 130, 246, 0.03) 0%, transparent 40%);
  pointer-events: none;
  animation: heroLight 18s ease-in-out infinite;
}

@keyframes heroLight {
  0%, 100% { opacity: 0.8; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.light-rays {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  background: conic-gradient(from 0deg at 50% 50%,
    transparent 0deg, rgba(154, 52, 18, 0.015) 30deg, transparent 60deg,
    rgba(201, 162, 39, 0.02) 90deg, transparent 120deg,
    rgba(34, 197, 94, 0.01) 150deg, transparent 180deg,
    rgba(59, 130, 246, 0.01) 210deg, transparent 240deg,
    rgba(154, 52, 18, 0.015) 270deg, transparent 300deg,
    rgba(201, 162, 39, 0.02) 330deg, transparent 360deg);
  animation: rotateRays 90s linear infinite;
  mask-image: radial-gradient(circle at 50% 50%, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, black 0%, transparent 70%);
}

@keyframes rotateRays {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border: 1px solid rgba(154, 52, 18, 0.15);
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--wuto-red);
  background: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-8);
  letter-spacing: 1.5px;
  backdrop-filter: blur(8px);
}

.hero-logo {
  width: 240px;
  height: 240px;
  margin-bottom: var(--space-8);
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  position: relative;
  z-index: 2;
  animation: spin-ccw 30s linear infinite;
}

@keyframes spin-ccw {
  from { transform: rotate(0deg); }
  to { transform: rotate(-360deg); }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5.5vw, 72px);
  font-weight: 700;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-5);
  color: var(--text-heading);
  letter-spacing: 1px;
}

.hero h1 .highlight { color: var(--wuto-red); }

.hero-subtitle {
  font-family: var(--font-body);
  font-size: clamp(14px, 1.6vw, 20px);
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto var(--space-6);
  line-height: var(--leading-relaxed);
  font-weight: 400;
  text-wrap: balance;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: var(--space-10);
}

.hero-tag {
  padding: 8px 16px;
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.5px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-secondary);
  transition: all 0.25s ease;
}

.hero-tag:hover {
  border-color: rgba(154, 52, 18, 0.2);
  color: var(--wuto-red);
  transform: translateY(-2px);
}

.hero-butterfly-base {
  width: 320px;
  max-width: 80vw;
  margin: 0 auto;
  position: relative;
  animation: baseFloat 7s ease-in-out infinite;
  z-index: 2;
  filter: drop-shadow(0 28px 64px rgba(201, 162, 39, 0.18));
}

.hero-butterfly-base img { width: 100%; }

@keyframes baseFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-16px) rotate(1deg); }
}

/* 飞舞蝴蝶 */
.butterfly {
  position: absolute;
  pointer-events: none;
  z-index: 1;
}

.butterfly img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 12px 30px rgba(0, 0, 0, 0.06));
}

.butterfly-red {
  width: 160px;
  top: 16%;
  right: 7%;
  animation: floatRed 14s ease-in-out infinite, flap 1.3s ease-in-out infinite;
  filter: drop-shadow(0 16px 40px rgba(154, 52, 18, 0.14));
}

.butterfly-green {
  width: 110px;
  bottom: 26%;
  left: 6%;
  animation: floatGreen 16s ease-in-out infinite, flap 1.6s ease-in-out infinite;
  filter: drop-shadow(0 16px 40px rgba(34, 197, 94, 0.12));
}

.butterfly-blue {
  width: 125px;
  top: 28%;
  left: 10%;
  animation: floatBlue 18s ease-in-out infinite, flap 1.4s ease-in-out infinite;
  filter: drop-shadow(0 16px 40px rgba(59, 130, 246, 0.12));
}

@keyframes flap {
  0%, 100% { transform: scaleX(1) scaleY(1); }
  50% { transform: scaleX(0.78) scaleY(1.05); }
}

@keyframes floatRed {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  25% { transform: translate(-22px, 32px) rotate(5deg); }
  50% { transform: translate(12px, 58px) rotate(-3deg); }
  75% { transform: translate(38px, 22px) rotate(4deg); }
}

@keyframes floatGreen {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(32px, -28px) rotate(-6deg); }
  66% { transform: translate(-22px, 38px) rotate(6deg); }
}

@keyframes floatBlue {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(-38px, 48px) rotate(8deg); }
}

.scroll-hint {
  position: absolute;
  bottom: 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 13px;
  letter-spacing: 1px;
  opacity: 0.55;
  animation: bounce 2.2s infinite;
  z-index: 2;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ===== 入口卡片 ===== */
.entries {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-5);
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-8) var(--space-16);
  position: relative;
  z-index: 2;
}

.entry-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-4);
  text-align: center;
  text-decoration: none;
  color: var(--text);
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.entry-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--wuto-red), var(--gold));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.entry-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(154, 52, 18, 0.12);
}

.entry-card:hover::before { transform: scaleX(1); }

.entry-card .icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  font-size: 26px;
  transition: all 0.35s ease;
}

.entry-card:hover .icon { transform: scale(1.12) rotate(-3deg); }

.entry-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.entry-card p {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
}

.entry-card .arrow {
  margin-top: var(--space-5);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-soft);
  color: var(--wuto-red);
  font-size: 15px;
  transition: all 0.3s ease;
}

.entry-card:hover .arrow {
  background: var(--wuto-red);
  color: white;
  transform: translateX(5px);
}

/* ===== 通用页面头部 ===== */
.page-header {
  padding: 160px var(--space-8) 60px;
  text-align: center;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at 50% 30%, rgba(154, 52, 18, 0.03) 0%, transparent 60%);
  pointer-events: none;
}

/* 红蝶立字头 — 末字右上角红蝶装饰 */
.last-char {
  position: relative;
  display: inline-block;
}

.last-char::after {
  content: '';
  position: absolute;
  /* 红蝶上移，底部中心刚好落在末字右上角上，像停栖在笔画尽头 */
  top: -1.05em;
  left: -0.05em;
  width: 2.40em;
  height: 2.40em;
  background: url('red-butterfly.png') center/contain no-repeat;
  pointer-events: none;
  opacity: 0.95;
  filter: drop-shadow(0 2px 8px rgba(154, 52, 18, 0.28));
  /* 舒缓有节奏的振翅：周期较长、动作柔和，持续匀速展翅 */
  animation: gentleFlap 3.5s ease-in-out infinite;
  transform-origin: bottom center;
}

/* 舒缓振翅 — 柔和开合 + 身体微浮 + 轻微摆头，节奏像呼吸 */
@keyframes gentleFlap {
  0%, 100% { transform: scaleX(1) scaleY(1) rotate(0deg) translateY(0); }
  25% { transform: scaleX(0.68) scaleY(1.05) rotate(3deg) translateY(-3px); }
  50% { transform: scaleX(1) scaleY(1) rotate(0deg) translateY(0); }
  75% { transform: scaleX(0.68) scaleY(1.05) rotate(-3deg) translateY(-3px); }
}

/* 移除旧的分离动画，避免冲突 */
@keyframes realFlap { }
@keyframes perchFlap { }
@keyframes perchSway { }

.page-header-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding-top: 28px;
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 700;
  margin-bottom: var(--space-4);
  letter-spacing: 1px;
  line-height: var(--leading-tight);
  color: var(--text-heading);
}

.page-header h1 .highlight { color: var(--wuto-red); }

.page-header p {
  font-family: var(--font-body);
  font-size: clamp(14px, 1.5vw, 18px);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 720px;
  margin: 0 auto;
  text-wrap: balance;
}

/* ===== Section ===== */
.section {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-16) var(--space-8);
}

.section.alt {
  background: var(--surface-soft);
  max-width: 100%;
  padding: var(--space-16) 0;
}

.section.alt > .section-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

.section-header-row {
  margin: 0 auto var(--space-8);
  max-width: 760px;
  text-align: center;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--wuto-red);
  margin-bottom: var(--space-4);
}

.section-label::after {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--wuto-red);
  border-radius: 2px;
}

.section h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4.2vw, 56px);
  font-weight: 700;
  margin-bottom: var(--space-4);
  line-height: var(--leading-tight);
  letter-spacing: 0.5px;
  color: var(--text-heading);
}

.section .lead {
  font-family: var(--font-body);
  font-size: clamp(14px, 1.5vw, 18px);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  text-wrap: balance;
}

/* ===== Cards ===== */
.card-grid {
  display: grid;
  gap: var(--space-5);
}

.card-grid-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: var(--space-5);
  transition: transform 0.35s ease;
}

.card:hover .card-icon { transform: scale(1.1) rotate(-4deg); }

.card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.3px;
  color: var(--text-heading);
}

.card p {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  text-wrap: balance;
}

.card .card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: var(--space-5);
}

.card .card-tag {
  font-family: var(--font-body);
  font-size: 13px;
  padding: 5px 12px;
  border-radius: 100px;
  background: var(--surface-soft);
  color: var(--text-muted);
  border: 1px solid var(--border);
  font-weight: 500;
}

.card-featured {
  border-width: 2px;
  position: relative;
}

.card-featured::before {
  content: '';
  position: absolute;
  top: -1px; left: -1px; right: -1px;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: linear-gradient(90deg, var(--wuto-red), var(--gold), var(--wuto-red));
}

/* 颜色变体 */
.card-red { border-color: rgba(154, 52, 18, 0.10); background: linear-gradient(180deg, #fff 0%, var(--wuto-red-50) 100%); }
.card-red .card-icon { background: var(--wuto-red-100); color: var(--wuto-red); }
.card-red h3 { color: var(--text-heading); }
.card-red .card-tag { background: var(--wuto-red-50); color: var(--wuto-red-700); border-color: var(--wuto-red-100); }

.card-gold { border-color: rgba(201, 162, 39, 0.10); background: linear-gradient(180deg, #fff 0%, var(--gold-50) 100%); }
.card-gold .card-icon { background: var(--gold-100); color: var(--gold-700); }
.card-gold h3 { color: var(--text-heading); }
.card-gold .card-tag { background: var(--gold-50); color: var(--gold-700); border-color: var(--gold-100); }

.card-green { border-color: rgba(22, 163, 74, 0.10); background: linear-gradient(180deg, #fff 0%, var(--green-50) 100%); }
.card-green .card-icon { background: var(--green-100); color: var(--green); }
.card-green h3 { color: var(--text-heading); }
.card-green .card-tag { background: var(--green-50); color: #166534; border-color: var(--green-100); }

.card-blue { border-color: rgba(37, 99, 235, 0.10); background: linear-gradient(180deg, #fff 0%, var(--blue-50) 100%); }
.card-blue .card-icon { background: var(--blue-100); color: var(--blue); }
.card-blue h3 { color: var(--text-heading); }
.card-blue .card-tag { background: var(--blue-50); color: #1e40af; border-color: var(--blue-100); }

.card-purple { border-color: rgba(124, 58, 237, 0.10); background: linear-gradient(180deg, #fff 0%, var(--purple-50) 100%); }
.card-purple .card-icon { background: var(--purple-100); color: var(--purple); }
.card-purple h3 { color: var(--text-heading); }
.card-purple .card-tag { background: var(--purple-50); color: #5b21b6; border-color: var(--purple-100); }

.card-cyan { border-color: rgba(8, 145, 178, 0.10); background: linear-gradient(180deg, #fff 0%, var(--cyan-50) 100%); }
.card-cyan .card-icon { background: var(--cyan-100); color: var(--cyan); }
.card-cyan h3 { color: var(--text-heading); }
.card-cyan .card-tag { background: var(--cyan-50); color: #155e75; border-color: var(--cyan-100); }

/* ===== Stats ===== */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin: var(--space-6) 0;
}

.stat-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-5);
  text-align: center;
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
  overflow: hidden;
}

.stat-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--wuto-red), var(--gold));
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.stat-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(154, 52, 18, 0.10);
}

.stat-item:hover::before { transform: scaleX(1); }

.stat-num {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--wuto-red);
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.stat-label {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  font-weight: 500;
}

/* ===== Value chain ===== */
.value-chain {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin: var(--space-6) 0;
}

.vc-node {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-6) var(--space-5);
  text-align: center;
  min-width: 160px;
  box-shadow: var(--shadow-sm);
  transition: all 0.35s ease;
  flex: 1;
  max-width: 220px;
}

.vc-node:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.vc-node strong {
  display: block;
  font-family: var(--font-display);
  font-size: 15px;
  margin-bottom: 6px;
  font-weight: 700;
}

.vc-node span {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
}

.vc-arrow {
  color: var(--gold);
  font-size: 20px;
  font-weight: 700;
}

/* ===== Loop ===== */
.loop-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-12);
  text-align: center;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.loop-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(154, 52, 18, 0.02) 0%, transparent 70%);
  pointer-events: none;
}

.loop-box h3 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
  letter-spacing: 0.5px;
  color: var(--text-heading);
}

.loop-box > p {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
  margin-bottom: var(--space-6);
}

.loop-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin: var(--space-8) 0;
  position: relative;
  z-index: 1;
}

.loop-node {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-6);
  min-width: 170px;
  text-align: center;
  transition: all 0.35s ease;
  box-shadow: var(--shadow-sm);
}

.loop-node:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.loop-node .loop-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  font-size: 24px;
}

.loop-node h4 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.loop-node p {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.loop-arrow {
  font-size: 24px;
  color: var(--gold);
  font-weight: 700;
}

.loop-label {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
  max-width: 100px;
  text-align: center;
  line-height: 1.5;
  margin-top: 6px;
}

.loop-center {
  background: var(--surface);
  border: 1px dashed var(--gold);
  border-radius: var(--radius);
  padding: var(--space-5) var(--space-6);
  text-align: center;
  max-width: 200px;
}

.loop-center strong {
  display: block;
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--gold-700);
  margin-bottom: 8px;
  font-weight: 700;
}

.loop-center span {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.loop-summary {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--gold-700);
  letter-spacing: 2px;
  margin-top: var(--space-6);
  position: relative;
  z-index: 1;
}

.loop-summary span {
  display: block;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-top: 8px;
  letter-spacing: 0;
}

/* ===== 131 战略图 ===== */
.strategy-overview {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-12);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-sm);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.strategy-overview::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--wuto-red), var(--gold), var(--wuto-red));
}

.strategy-overview h3 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: var(--space-6);
  color: var(--text-heading);
  letter-spacing: 1px;
}

.strategy-formula {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}

.formula-item {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-6) var(--space-8);
  min-width: 170px;
  text-align: center;
  transition: all 0.35s ease;
}

.formula-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(154, 52, 18, 0.10);
}

.formula-item .num {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--wuto-red);
  margin-bottom: 4px;
}

.formula-item .label {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 4px;
}

.formula-item .desc {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.formula-plus, .formula-eq {
  font-size: 32px;
  color: var(--gold);
  font-weight: 300;
}

.strategy-overview .formula-summary {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 640px;
  margin: 0 auto;
  font-weight: 500;
  text-wrap: balance;
}

/* ===== 三资化流程 ===== */
.process-chain {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin: var(--space-6) 0;
}

.process-node {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-6) var(--space-8);
  text-align: center;
  min-width: 170px;
  box-shadow: var(--shadow-sm);
  transition: all 0.35s ease;
}

.process-node:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(154, 52, 18, 0.10);
}

.process-node .icon {
  font-size: 28px;
  margin-bottom: 10px;
}

.process-node h4 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-heading);
}

.process-node span {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
}

.process-arrow {
  color: var(--gold);
  font-size: 22px;
  font-weight: 700;
}

/* ===== Timeline ===== */
.timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.timeline-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  position: relative;
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: var(--shadow-sm);
}

.timeline-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.timeline-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.timeline-item.red::before { background: var(--wuto-red); }
.timeline-item.gold::before { background: var(--gold); }
.timeline-item.blue::before { background: var(--blue); }

.timeline-item .badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: var(--space-4);
}

.timeline-item.red .badge { background: var(--wuto-red-50); color: var(--wuto-red); }
.timeline-item.gold .badge { background: var(--gold-100); color: var(--gold-700); }
.timeline-item.blue .badge { background: var(--blue-100); color: var(--blue); }

.timeline-item h4 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-heading);
}

.timeline-item p {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  text-wrap: balance;
}

/* ===== Vision banner ===== */
.vision-banner {
  background: var(--wuto-red);
  color: white;
  border-radius: var(--radius-lg);
  padding: var(--space-12) var(--space-10);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(154, 52, 18, 0.18);
}

.vision-banner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 40%);
  pointer-events: none;
}

.vision-banner h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  margin-bottom: var(--space-4);
  position: relative;
  z-index: 1;
  letter-spacing: 1px;
}

.vision-banner p {
  font-family: var(--font-body);
  font-size: 16px;
  opacity: 0.92;
  line-height: var(--leading-relaxed);
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-wrap: balance;
}

.vision-banner .slogan {
  margin-top: var(--space-6);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 4px;
  opacity: 1;
  position: relative;
  z-index: 1;
}

/* ===== Biz grid ===== */
.biz-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.biz-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all 0.35s ease;
  box-shadow: var(--shadow-xs);
}

.biz-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
  border-color: rgba(154, 52, 18, 0.08);
}

.biz-item .biz-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
  background: var(--wuto-red-50);
  color: var(--wuto-red);
  transition: transform 0.3s ease;
}

.biz-item:hover .biz-icon { transform: scale(1.1) rotate(-4deg); }

.biz-item h4 { font-family: var(--font-display); font-size: 15px; font-weight: 700; margin-bottom: 6px; letter-spacing: 0.3px; color: var(--text-heading); }
.biz-item p { font-family: var(--font-body); font-size: 13px; color: var(--text-secondary); line-height: 1.7; }

/* ===== Slogan block ===== */
.slogan-block {
  text-align: center;
  padding: var(--space-16) var(--space-8);
  background: var(--surface-soft);
  position: relative;
  overflow: hidden;
}

.slogan-block::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(154, 52, 18, 0.03) 0%, transparent 60%);
  pointer-events: none;
}

.slogan-block .s-main {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.5vw, 34px);
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--wuto-red);
  margin-bottom: var(--space-4);
  position: relative;
  z-index: 1;
}

.slogan-block .s-sub {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  line-height: var(--leading-relaxed);
  position: relative;
  z-index: 1;
  text-wrap: balance;
}

.slogan-block .s-tags {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--wuto-red);
  font-weight: 500;
  letter-spacing: 1px;
  position: relative;
  z-index: 1;
}

/* ===== Footer ===== */
.footer {
  background: #0b1120;
  color: rgba(255, 255, 255, 0.6);
  padding: var(--space-16) var(--space-8) 0;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--wuto-red), var(--gold), transparent);
}

/* subtle background glow */
.footer::after {
  content: '';
  position: absolute;
  top: 20%; left: 50%;
  transform: translate(-50%, 0);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse at 50% 0%, rgba(154, 52, 18, 0.06), transparent 70%);
  pointer-events: none;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.1fr 1fr 0.9fr;
  gap: var(--space-12);
  max-width: var(--container);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* ── Column 1: Brand ── */
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer .logo-white {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: white;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.footer .logo-white img {
  height: 48px;
  width: 48px;
  object-fit: contain;
}

.footer-tagline {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.5;
  max-width: 280px;
}

.footer-address {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 4px;
}

.footer-address span {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.6;
}

.footer-address .addr-icon {
  flex-shrink: 0;
  width: 16px;
  text-align: center;
  color: rgba(255, 255, 255, 0.3);
  margin-top: 1px;
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-3);
  padding: 6px 14px;
  border: 1px solid rgba(201, 162, 39, 0.3);
  border-radius: 4px;
  font-size: 13px;
  color: var(--gold);
  background: rgba(201, 162, 39, 0.06);
  width: fit-content;
  font-weight: 600;
}

.footer-badge::before {
  content: '🏛';
  font-size: 13px;
}

/* ── Column 2: Nav ── */
.footer-nav-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-col-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: white;
  margin-bottom: 2px;
}

.footer-nav-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px var(--space-6);
}

.footer-nav-grid a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
  padding: 4px 0;
  display: inline-block;
}

.footer-nav-grid a:hover {
  color: white;
  transform: translateX(3px);
}

/* ── Column 3: QR ── */
.footer-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding-left: var(--space-8);
}

.footer-qr-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 14px;
  text-align: center;
}

.footer-qr-card img {
  width: 130px;
  height: 130px;
  object-fit: contain;
  border-radius: 6px;
  display: block;
}

.footer-qr-card p {
  margin-top: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

/* ── Bottom bar ── */
.footer-bottom {
  margin-top: var(--space-8);
  padding: var(--space-5) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.3);
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer-bottom-inner {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.3);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-bottom a:hover {
  color: rgba(255, 255, 255, 0.6);
}

/* ===== Decorative helpers ===== */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 0 auto;
  max-width: var(--container);
}

.glow-red { box-shadow: var(--shadow-glow-red); }
.glow-gold { box-shadow: var(--shadow-glow-gold); }

.text-balance { text-wrap: balance; }

/* 强制关键短标题在一行显示 */
.strategy-overview h3,
.slogan-block .s-main,
.page-header h1,
.vision-banner h2,
.loop-box h3,
.hero h1 {
  white-space: nowrap;
}

.section-header-row h2,
.section-header-row h3 {
  text-wrap: balance;
}

@media (max-width: 768px) {
  .strategy-overview h3,
  .slogan-block .s-main,
  .page-header h1,
  .vision-banner h2,
  .loop-box h3,
  .hero h1 {
    white-space: normal;
  }
}

/* ===== Fade up animation ===== */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: all 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* ===== Image float decorative ===== */
.float-img {
  display: inline-block;
  transition: transform 0.6s ease;
}

.float-img:hover { transform: translateY(-8px) rotate(2deg); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .entries { grid-template-columns: repeat(3, 1fr); }
  .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .butterfly-red { width: 120px; }
  .butterfly-green { width: 90px; }
  .butterfly-blue { width: 100px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu-btn { display: flex; }
  .mobile-menu.active { display: block; }

  .nav-inner,
  .entries,
  .section,
  .section.alt > .section-inner {
    padding-left: var(--space-5);
    padding-right: var(--space-5);
  }

  .entries { grid-template-columns: repeat(2, 1fr); }
  .card-grid-2,
  .card-grid-3,
  .card-grid-4,
  .stat-row,
  .timeline,
  .biz-grid {
    grid-template-columns: 1fr;
  }

  .value-chain { flex-direction: column; align-items: stretch; }
  .value-chain .vc-arrow { transform: rotate(90deg); text-align: center; }
  .vc-node { min-width: auto; max-width: none; }
  .loop-diagram { flex-direction: column; }
  .loop-arrow { transform: rotate(90deg); }
  .process-chain { flex-direction: column; align-items: stretch; }
  .process-arrow { transform: rotate(90deg); text-align: center; }
  .strategy-formula { flex-direction: column; }
  .formula-plus, .formula-eq { transform: rotate(90deg); }

  .section { padding: var(--space-12) var(--space-5); }
  .section.alt { padding: var(--space-12) 0; }
  .page-header { padding: 130px var(--space-5) 50px; }
  .hero { padding: 130px var(--space-5) 50px; }
  .hero-logo { width: 160px; height: 160px; }
  .hero-butterfly-base { width: 240px; }
  .butterfly-red { width: 80px; right: 4%; top: 12%; }
  .butterfly-green { width: 60px; left: 4%; }
  .butterfly-blue { width: 70px; left: 8%; top: 24%; }
  .last-char::after { width: 2.10em; height: 2.10em; top: -0.95em; left: -0.04em; }
  .loop-box { padding: var(--space-8) var(--space-5); }
  .vision-banner { padding: var(--space-10) var(--space-6); }
  .footer-main { grid-template-columns: 1fr; gap: var(--space-8); text-align: center; }
  .footer-brand { align-items: center; text-align: center; }
  .footer-tagline { max-width: 100%; }
  .footer-address span { justify-content: center; }
  .footer-badge { margin-left: auto; margin-right: auto; }
  .footer-nav-grid { justify-items: center; }
  .footer-qr { padding-left: 0; align-items: center; flex-direction: column; }
  .entries { padding-bottom: var(--space-16); }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 32px; }
  .hero-logo { width: 130px; height: 130px; }
  .hero-butterfly-base { width: 200px; }
  .entries { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .hero-tags { gap: 8px; }
  .hero-tag { font-size: 12px; padding: 6px 12px; }
  .last-char::after { width: 1.90em; height: 1.90em; top: -0.90em; left: -0.03em; }
}