@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@500;600;700;800&family=Noto+Sans+SC:wght@400;500;700;800&display=swap");

:root {
  --color-primary: #ff4f2f;
  --color-bg: #ffffff;
  --color-text: #111111;
  --color-muted: #676d7a;
  --color-border: #e7e7ec;
  --color-soft: #fff4f0;
  --radius-xs: 10px;
  --radius-sm: 14px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 20px;
  --space-5: 28px;
  --space-6: 36px;
  --space-7: 48px;
  --space-8: 72px;
  --shadow-soft: 0 16px 42px rgba(17, 17, 17, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  color: var(--color-text);
  background: radial-gradient(1200px 700px at 100% -10%, #fff1ec 0%, transparent 55%), var(--color-bg);
  line-height: 1.5;
}

body.lang-zh {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

body.lang-en {
  font-family: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
}

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

.page-shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding-bottom: var(--space-8);
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5) 0 var(--space-3);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 800;
  letter-spacing: 0.2px;
}

.brand img {
  width: 30px;
  height: 30px;
}

.language-switch {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: #fff;
}

.language-switch a {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-muted);
  padding: 6px 12px;
  border-radius: 999px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.language-switch a.active,
.language-switch a:hover {
  background: var(--color-soft);
  color: var(--color-primary);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: var(--space-6);
  align-items: stretch;
  padding: var(--space-6) 0 var(--space-7);
}

.eyebrow {
  display: inline-flex;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-soft);
  padding: 6px 10px;
  border-radius: 999px;
  margin: 0 0 var(--space-3);
}

.hero h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

body.lang-en .hero-title-single-line {
  white-space: nowrap;
  font-size: min(48px, 6.2vw);
}

.hero-subtitle {
  margin: var(--space-4) 0 0;
  max-width: 560px;
  color: var(--color-muted);
  font-size: clamp(16px, 2.3vw, 21px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 18px;
  border-radius: var(--radius-xs);
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 10px 24px rgba(255, 79, 47, 0.28);
}

.btn-primary:hover {
  box-shadow: 0 16px 30px rgba(255, 79, 47, 0.34);
}

.btn-secondary {
  border-color: var(--color-border);
  background: #fff;
  color: var(--color-text);
}

.btn-secondary:hover {
  background: #fafafa;
}

.hero-visual {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: #fff;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hero-panel-title {
  margin: 0 0 var(--space-2);
  font-size: 12px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.hero-panel ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
}

.hero-panel li {
  font-weight: 700;
}

.hero-wave {
  margin-top: var(--space-4);
  height: 90px;
  border-radius: var(--radius-sm);
  background:
    linear-gradient(180deg, rgba(255, 79, 47, 0.2), rgba(255, 79, 47, 0) 65%),
    repeating-linear-gradient(
      90deg,
      rgba(255, 79, 47, 0.85),
      rgba(255, 79, 47, 0.85) 10px,
      rgba(255, 79, 47, 0.2) 10px,
      rgba(255, 79, 47, 0.2) 16px
    );
}

.section {
  padding: var(--space-7) 0 0;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(24px, 3.8vw, 36px);
  line-height: 1.16;
}

.section-head p {
  margin: var(--space-2) 0 0;
  color: var(--color-muted);
}

.feature-grid {
  margin-top: var(--space-5);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.feature-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  background: #fff;
  min-height: 176px;
}

.feature-card h3 {
  margin: 0;
  font-size: 21px;
  line-height: 1.25;
}

.feature-card p {
  margin: var(--space-2) 0 0;
  color: var(--color-muted);
}

.flow-list {
  margin: var(--space-5) 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #fff;
}

.flow-list li {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-3);
  align-items: start;
  padding: var(--space-4);
}

.flow-list li + li {
  border-top: 1px solid var(--color-border);
}

.flow-list strong {
  color: var(--color-primary);
}

.flow-list span {
  color: var(--color-muted);
}

.cta {
  margin-top: var(--space-7);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  background:
    linear-gradient(140deg, rgba(255, 79, 47, 0.08), rgba(255, 255, 255, 0.95) 56%),
    #fff;
}

.cta h2 {
  margin: 0;
  font-size: clamp(26px, 3.5vw, 40px);
  line-height: 1.14;
}

.cta p {
  margin: var(--space-2) 0 0;
  color: var(--color-muted);
}

.site-footer {
  margin-top: var(--space-7);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  align-items: center;
  flex-wrap: wrap;
}

.site-footer p {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.footer-links {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: 14px;
}

.footer-links .is-disabled {
  color: #9ca3af;
  pointer-events: none;
}

.footer-links a.active {
  color: var(--color-primary);
  font-weight: 700;
}

.policy-main {
  padding-bottom: var(--space-6);
}

.policy-hero {
  padding: var(--space-6) 0 var(--space-5);
}

.policy-hero h1 {
  margin: 0;
  font-size: clamp(30px, 4.8vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.policy-meta {
  margin: var(--space-2) 0 0;
  color: var(--color-muted);
  font-size: 14px;
}

.policy-section {
  padding-top: var(--space-5);
}

.policy-section h2 {
  margin: 0;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.2;
}

.policy-section p {
  margin: var(--space-2) 0 0;
  color: var(--color-muted);
}

.policy-grid {
  margin-top: var(--space-4);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.policy-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  background: #fff;
}

.policy-card h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.3;
}

.policy-card-wide {
  margin-top: var(--space-3);
}

.policy-list {
  margin: var(--space-2) 0 0;
  padding-left: 20px;
  color: var(--color-muted);
  display: grid;
  gap: 8px;
}

.policy-list strong {
  color: var(--color-text);
}

.policy-link {
  color: var(--color-primary);
  font-weight: 700;
}

.policy-note {
  margin-top: var(--space-3);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-xs);
  background: var(--color-soft);
  padding: 12px 14px;
  color: #4c5563;
}

.root-shell {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: var(--space-4);
}

.root-card {
  width: min(460px, 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fff;
  text-align: center;
  padding: var(--space-6) var(--space-4);
  box-shadow: var(--shadow-soft);
}

.root-logo {
  width: 42px;
  height: 42px;
}

.root-card h1,
.root-card h2 {
  margin: var(--space-3) 0 0;
}

.root-card p {
  margin: var(--space-2) 0 0;
  color: var(--color-muted);
}

.root-actions {
  margin-top: var(--space-4);
  display: flex;
  justify-content: center;
  gap: var(--space-2);
}

.root-actions a {
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 700;
}

.root-actions a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.reveal {
  animation: rise 0.56s ease both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .policy-grid {
    grid-template-columns: 1fr;
  }

  .flow-list li {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .page-shell {
    width: min(1120px, calc(100% - 24px));
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .btn {
    width: 100%;
  }

  .hero-actions {
    width: 100%;
  }

  .cta {
    padding: var(--space-5);
  }
}