:root {
  --bg: #ece7df;
  --bg-alt: #e3ddd2;
  --surface: #f5f1ea;
  --dark: #16130f;
  --text: #211d18;
  --text-soft: #6f675c;
  --line: #d8d1c4;
  --line-dark: rgba(255, 255, 255, 0.12);
  --grad: linear-gradient(120deg, #ff7a45, #ff4d6d 48%, #7c5cff);
  --max-width: 1080px;
  --space: clamp(72px, 11vw, 140px);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.85;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.01em;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

/* 顶部滚动进度条 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  z-index: 50;
  will-change: transform;
}

/* 噪点质感 */
.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* 滚动渐显 */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.in {
  opacity: 1;
  transform: none;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(236, 231, 223, 0.8);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  z-index: 20;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
}

.brand-mark {
  display: inline-flex;
  filter: drop-shadow(0 4px 10px rgba(255, 77, 109, 0.25));
}

.brand-name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  color: var(--text-soft);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.06em;
  transition: color 0.2s ease;
}

.nav a:hover {
  color: var(--text);
}

/* Hero (dark, modern) */
.hero {
  position: relative;
  background: var(--dark);
  color: #f5f1ea;
  padding: clamp(110px, 20vw, 220px) 0 clamp(90px, 14vw, 160px);
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 62vw;
  height: 62vw;
  max-width: 680px;
  max-height: 680px;
  background: radial-gradient(
    circle at center,
    rgba(255, 77, 109, 0.55),
    rgba(124, 92, 255, 0.28) 45%,
    transparent 70%
  );
  filter: blur(24px);
  pointer-events: none;
  animation: float1 14s ease-in-out infinite;
}

.hero-glow-2 {
  top: auto;
  bottom: -30%;
  right: auto;
  left: -12%;
  background: radial-gradient(
    circle at center,
    rgba(255, 122, 69, 0.45),
    rgba(255, 77, 109, 0.18) 45%,
    transparent 70%
  );
  animation: float2 18s ease-in-out infinite;
}

@keyframes float1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-30px, 30px) scale(1.12); }
}

@keyframes float2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -20px) scale(1.15); }
}

.hero .container {
  position: relative;
  z-index: 2;
}

/* 滚动提示 */
.scroll-hint {
  margin-top: 64px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: rgba(245, 241, 234, 0.5);
}

.scroll-line {
  position: relative;
  width: 60px;
  height: 1px;
  background: rgba(245, 241, 234, 0.3);
  overflow: hidden;
}

.scroll-line::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 40%;
  background: #fff;
  animation: slide 2.4s ease-in-out infinite;
}

@keyframes slide {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(250%); }
}

.hero-eyebrow {
  font-size: 13px;
  letter-spacing: 0.34em;
  color: rgba(245, 241, 234, 0.6);
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(36px, 7.5vw, 68px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: 0.01em;
}

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  margin-top: 30px;
  font-size: clamp(17px, 2.4vw, 21px);
  color: rgba(245, 241, 234, 0.72);
  max-width: 30em;
}

.hero-actions {
  margin-top: 44px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 13px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 10px 30px rgba(255, 77, 109, 0.35);
}

.btn-ghost {
  color: #f5f1ea;
  border: 1px solid rgba(245, 241, 234, 0.3);
}

.btn-ghost:hover {
  background: rgba(245, 241, 234, 0.08);
}

/* Section grid (editorial layout) */
.section {
  padding: var(--space) 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 48px;
  align-items: start;
}

.section-aside {
  position: sticky;
  top: 110px;
}

.section-index {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.1em;
  font-weight: 700;
  color: #fff;
  background: var(--grad);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.section-label {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.section-body {
  max-width: 640px;
}

.lead-text {
  font-size: clamp(19px, 2.6vw, 24px);
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: 24px;
}

/* 数据条 */
.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.stat-num {
  display: block;
  font-size: clamp(32px, 5vw, 44px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.01em;
}

.stat-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-soft);
}

.body-text {
  color: var(--text-soft);
}

/* Business list */
.business-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 48px;
}

.business-list li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
  align-items: baseline;
  transition: transform 0.25s ease;
}

.business-list li:hover {
  transform: translateX(8px);
}

.biz-no {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.business-list h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.business-list p {
  color: var(--text-soft);
}

/* Contact */
.contact-list {
  list-style: none;
  margin-top: 28px;
}

.contact-list li {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.contact-key {
  font-size: 14px;
  color: var(--text-soft);
  letter-spacing: 0.06em;
}

.contact-val {
  color: var(--text);
  font-weight: 500;
}

.contact-val a {
  color: var(--text);
  text-decoration: none;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 600;
  transition: opacity 0.2s ease;
}

.contact-val a:hover {
  opacity: 0.6;
}

/* Footer */
.site-footer {
  background: var(--dark);
  color: rgba(245, 241, 234, 0.7);
  padding: 44px 0 28px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.brand-sm {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #f5f1ea;
}

/* 备案信息 */
.footer-beian {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12.5px;
  letter-spacing: 0.03em;
}

.footer-beian a {
  color: rgba(245, 241, 234, 0.6);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-beian a:hover {
  color: rgba(245, 241, 234, 0.95);
}

.beian-sep {
  color: rgba(245, 241, 234, 0.3);
}

.beian-badge {
  display: inline-block;
  height: 16px;
  width: auto;
  margin-right: 6px;
  vertical-align: middle;
  border-radius: 2px;
}

/* Responsive */
@media (max-width: 720px) {
  .container {
    padding: 0 22px;
  }
  .section-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .section-aside {
    position: static;
  }
  .business-list li {
    grid-template-columns: 36px 1fr;
    gap: 14px;
  }
  .business-list {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .contact-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}