/* ===== Reset & Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #FAF8F5;
  --surface: #FFFFFF;
  --surface-alt: #F5F1EC;
  --border: #E8E3DC;
  --text: #3D3226;
  --text-secondary: #8B7E6E;
  --text-tertiary: #B4AB9C;
  --primary: #C4733E;
  --primary-light: #FFF5EE;
  --primary-dark: #9A5A2E;
  --accent: #5B8C5A;
  --accent-light: #F0F7EF;
  --shadow-sm: 0 1px 3px rgba(61, 50, 38, 0.06);
  --shadow-md: 0 4px 16px rgba(61, 50, 38, 0.08);
  --shadow-lg: 0 12px 40px rgba(61, 50, 38, 0.12);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

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

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(250, 248, 245, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.navbar.scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
}
.logo-text { color: var(--primary); }
.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
}
.nav-links a {
  font-size: 15px;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}
.nav-links a:hover { color: var(--primary); }
.lang-toggle {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}
.lang-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.lang-current { color: var(--primary); font-weight: 500; }
.lang-sep { margin: 0 2px; opacity: 0.4; }

/* ===== Nav Auth ===== */
.nav-auth {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-login-btn {
  padding: 7px 18px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}
.nav-login-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}
.nav-user {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px 4px 4px;
  border-radius: 20px;
  background: var(--surface-alt);
  transition: var(--transition);
}
.nav-user:hover {
  background: var(--primary-light);
}
.nav-user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  flex-shrink: 0;
}
.nav-user-name {
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
}
.nav-logout {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-tertiary);
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
}
.nav-logout:hover {
  color: #DC2626;
  border-color: #FECACA;
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 32px 80px;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 600px 400px at 30% 20%, rgba(196, 115, 62, 0.06), transparent),
    radial-gradient(ellipse 500px 350px at 70% 80%, rgba(91, 140, 90, 0.05), transparent),
    linear-gradient(180deg, #FFF9F3 0%, var(--bg) 60%);
  z-index: 0;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}
.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-light);
  border: 1px solid rgba(196, 115, 62, 0.2);
  border-radius: 20px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 28px;
}
.hero-title {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.hero-title span { display: block; }
.hero-title-accent {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}
.btn {
  padding: 12px 28px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(196, 115, 62, 0.3);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(196, 115, 62, 0.35);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: var(--surface);
  border-color: var(--text-tertiary);
}
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-tertiary);
  animation: gentle-bounce 2s ease-in-out infinite;
}
@keyframes gentle-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ===== Section Common ===== */
.section-header {
  text-align: center;
  margin-bottom: 48px;
  padding: 0 32px;
}
.section-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.section-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
}

/* ===== Tools Grid ===== */
.tools-section {
  padding: 100px 32px 80px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.tools-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  transition: var(--transition);
  position: relative;
  cursor: pointer;
}
.tool-card[data-status="active"]:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}
.tool-card[data-status="coming"] {
  opacity: 0.7;
}
.tool-card[data-status="coming"]:hover {
  opacity: 0.85;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.tool-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-alt);
  color: var(--icon-color, var(--primary));
  margin-bottom: 4px;
  transition: var(--transition);
}
.tool-card[data-status="active"]:hover .tool-icon {
  background: color-mix(in srgb, var(--icon-color) 8%, var(--surface));
}
.tool-name {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.tool-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}
.tool-badge {
  font-size: 11px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 12px;
  margin-top: 4px;
}
.badge-active {
  background: var(--accent-light);
  color: var(--accent);
}
.badge-coming {
  background: var(--surface-alt);
  color: var(--text-tertiary);
}

/* ===== Mission ===== */
.mission-section {
  padding: 100px 32px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.mission-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.mission-text .section-title {
  text-align: left;
}
.mission-body {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin: 20px 0 36px;
}
.mission-stats {
  display: flex;
  gap: 40px;
}
.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.03em;
}
.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Orbit visual */
.mission-visual {
  position: relative;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.orbit-ring {
  position: absolute;
  border: 1px dashed var(--border);
  border-radius: 50%;
  animation: orbit-rotate 30s linear infinite;
}
.orbit-1 { width: 160px; height: 160px; }
.orbit-2 { width: 240px; height: 240px; animation-duration: 45s; animation-direction: reverse; }
.orbit-3 { width: 320px; height: 320px; animation-duration: 60s; }
@keyframes orbit-rotate {
  to { transform: rotate(360deg); }
}
.orbit-core {
  width: 80px;
  height: 80px;
  background: var(--surface);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  z-index: 1;
}

/* ===== About / Domains ===== */
.about-section {
  padding: 100px 32px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.domains-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}
.domain-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  text-align: center;
  transition: var(--transition);
}
.domain-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.domain-globe {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.globe-intl { background: #E6F1FB; }
.globe-domestic { background: var(--primary-light); }
.domain-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.domain-label {
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 12px;
}
.domain-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Footer ===== */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 60px 32px 24px;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
}
.footer-brand { flex: 1; min-width: 240px; }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}
.footer-tagline {
  font-size: 14px;
  color: var(--text-secondary);
}
.footer-links {
  display: flex;
  gap: 64px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}
.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  max-width: var(--max-width);
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 13px;
  color: var(--text-tertiary);
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .mission-inner { grid-template-columns: 1fr; gap: 40px; }
  .mission-visual { display: none; }
  .hero-title { font-size: 36px; }
  .nav-links { display: none; }
}
@media (max-width: 600px) {
  .tools-grid { grid-template-columns: 1fr; }
  .domains-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 28px; }
  .hero-subtitle { font-size: 15px; }
  .section-title { font-size: 24px; }
  .mission-stats { gap: 24px; }
  .stat-num { font-size: 28px; }
  .footer-inner { flex-direction: column; gap: 32px; }
  .footer-links { gap: 32px; }
  .nav-inner { padding: 0 20px; }
  .hero { padding: 100px 20px 60px; }
  .tools-section, .mission-section, .about-section { padding: 60px 20px; }
}

/* ===== Showcase 效果展示区 ===== */
.showcase-section { padding: 80px 40px; max-width: 1200px; margin: 0 auto; }
.showcase-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.showcase-card {
  background: #fff; border: 1px solid #E8E0D5; border-radius: 16px;
  padding: 28px 26px; display: flex; flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease;
}
.showcase-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(139,90,43,.12); }
.showcase-tag {
  display: inline-block; align-self: flex-start; font-size: 13px; font-weight: 600;
  color: #C4733E; background: #FAF0E8; border-radius: 20px; padding: 4px 14px;
  margin-bottom: 16px; letter-spacing: 1px;
}
.showcase-quote { flex: 1; }
.quote-text {
  font-size: 16px; line-height: 1.9; color: #3D3530;
  font-family: "Source Han Serif SC", "Songti SC", serif;
  border-left: 3px solid #C4733E; padding-left: 14px; margin-bottom: 14px;
}
.quote-meta { font-size: 13px; color: #8B7E74; }
.showcase-cta {
  margin-top: 18px; font-size: 15px; font-weight: 600; color: #C4733E;
  text-decoration: none;
}
.showcase-cta:hover { text-decoration: underline; }
.trust-bar {
  margin-top: 44px; padding: 22px 28px; background: #F0EBE1;
  border-radius: 14px; display: flex; flex-wrap: wrap; gap: 14px 36px;
  justify-content: center;
}
.trust-item { font-size: 15px; color: #6B5D4F; }
@media (max-width: 900px) { .showcase-grid { grid-template-columns: 1fr; } .showcase-section { padding: 60px 20px; } }