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

:root {
  --brand: #007aff;
  --brand-soft: #4ea4ff;
  --rise: #ff3b30;
  --fall: #34c759;
  --warn: #ff9f0a;
  --bg-main: #eef2f8;
  --bg-layer: #f7f9fc;
  --card-bg: rgba(255, 255, 255, 0.9);
  --card-border: rgba(12, 25, 44, 0.08);
  --text-primary: #101828;
  --text-secondary: #344054;
  --text-tertiary: #667085;
  --shadow-soft: 0 10px 30px rgba(10, 24, 42, 0.07);
  --shadow-strong: 0 18px 50px rgba(0, 56, 132, 0.14);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text-primary);
  font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  background:
    radial-gradient(circle at 6% 7%, rgba(0, 122, 255, 0.14), transparent 28%),
    radial-gradient(circle at 92% 10%, rgba(255, 59, 48, 0.09), transparent 22%),
    radial-gradient(circle at 85% 90%, rgba(52, 199, 89, 0.1), transparent 24%),
    linear-gradient(180deg, var(--bg-layer), var(--bg-main));
  min-height: 100vh;
}

.page-shell {
  width: min(980px, calc(100% - 32px));
  margin: 28px auto 40px;
  position: relative;
  z-index: 1;
}

.hero {
  border-radius: var(--radius-xl);
  padding: 32px 34px;
  background:
    linear-gradient(135deg, rgba(0, 122, 255, 0.95), rgba(0, 122, 255, 0.78) 55%, rgba(78, 164, 255, 0.88)),
    linear-gradient(120deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0));
  color: #ffffff;
  box-shadow: var(--shadow-strong);
  position: relative;
  overflow: hidden;
  animation: cardIn 0.7s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -65% auto;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0));
}

.brand-mark {
  font-family: "Outfit", "Noto Sans SC", sans-serif;
  letter-spacing: 0.08em;
  font-weight: 600;
  opacity: 0.92;
  font-size: 0.85rem;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.top-nav {
  display: inline-flex;
  gap: 10px;
  padding: 5px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(6px);
  margin-bottom: 20px;
}

.top-nav a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.92rem;
  padding: 8px 16px;
  border-radius: 999px;
  transition: 0.24s ease;
}

.top-nav a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.14);
}

.top-nav a.active {
  background: #ffffff;
  color: var(--brand);
  font-weight: 600;
}

h1,
h2,
h3 {
  font-family: "Outfit", "Noto Sans SC", sans-serif;
  margin: 0;
}

.hero h1 {
  font-size: clamp(2rem, 3vw, 2.5rem);
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}

.hero p {
  margin: 0;
  color: rgba(255, 255, 255, 0.92);
  max-width: 820px;
}

.meta-row {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 7px 12px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.95);
}

.content {
  margin-top: 20px;
  display: grid;
  gap: 14px;
}

.card {
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(6px);
  animation: cardIn 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.card h2 {
  font-size: 1.18rem;
  color: #0f1728;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.card h2::before {
  content: "";
  width: 5px;
  height: 18px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--brand), var(--brand-soft));
}

.card p,
.card li {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.96rem;
}

.card ol,
.card ul {
  margin: 8px 0 0;
  padding-left: 20px;
}

.card li + li {
  margin-top: 8px;
}

.flow-path {
  margin-top: 8px;
  border-left: 3px solid var(--brand-soft);
  padding: 10px 12px;
  border-radius: 0 10px 10px 0;
  background: rgba(0, 122, 255, 0.06);
  color: #0f4072;
  font-size: 0.92rem;
}

.dual-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.tag {
  border-radius: 999px;
  padding: 7px 11px;
  font-size: 0.78rem;
  font-weight: 500;
  border: 1px solid transparent;
}

.tag.brand {
  color: #0055b6;
  border-color: rgba(0, 122, 255, 0.22);
  background: rgba(0, 122, 255, 0.08);
}

.tag.risk {
  color: #8a2418;
  border-color: rgba(255, 59, 48, 0.24);
  background: rgba(255, 59, 48, 0.08);
}

.tag.safe {
  color: #185e2b;
  border-color: rgba(52, 199, 89, 0.25);
  background: rgba(52, 199, 89, 0.11);
}

.english {
  background:
    linear-gradient(0deg, rgba(0, 122, 255, 0.03), rgba(0, 122, 255, 0.03)),
    var(--card-bg);
}

.footer {
  margin-top: 18px;
  padding: 16px 4px 8px;
  color: var(--text-tertiary);
  font-size: 0.86rem;
}

.footer a {
  color: #0f5ebb;
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

.hero-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  transition: 0.22s ease;
}

.cta-btn.primary {
  color: var(--brand);
  background: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.8);
}

.cta-btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(8, 32, 66, 0.2);
}

.cta-btn.ghost {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.28);
}

.cta-btn.ghost:hover {
  background: rgba(255, 255, 255, 0.2);
}

.meta-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metric {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow-soft);
  animation: cardIn 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.metric strong {
  display: block;
  font-family: "Outfit", "Noto Sans SC", sans-serif;
  font-size: 1.8rem;
  letter-spacing: 0.01em;
  color: #0f1728;
}

.metric span {
  display: block;
  margin-top: 4px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.feature-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-soft);
  animation: cardIn 0.9s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.feature h3 {
  margin: 0 0 7px;
  font-size: 1.03rem;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #0f1728;
}

.feature p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

.workflow {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.step {
  background:
    linear-gradient(155deg, rgba(0, 122, 255, 0.06), rgba(0, 122, 255, 0.01)),
    var(--card-bg);
  border: 1px solid rgba(0, 122, 255, 0.14);
  border-radius: 14px;
  padding: 14px 13px;
  animation: cardIn 0.95s cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.step .index {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Outfit", "Noto Sans SC", sans-serif;
  font-size: 0.86rem;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, var(--brand), var(--brand-soft));
  margin-bottom: 8px;
}

.step p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.58;
  font-size: 0.88rem;
}

.risk-panel {
  border-left: 4px solid var(--rise);
  background:
    linear-gradient(0deg, rgba(255, 59, 48, 0.04), rgba(255, 59, 48, 0.04)),
    var(--card-bg);
}

.risk-panel p {
  color: #8a2418;
  margin: 0;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.link-pill {
  text-decoration: none;
  color: #0f5ebb;
  border-radius: 999px;
  border: 1px solid rgba(0, 122, 255, 0.18);
  background: rgba(0, 122, 255, 0.06);
  font-size: 0.86rem;
  padding: 7px 12px;
}

.link-pill:hover {
  background: rgba(0, 122, 255, 0.12);
}

.notice {
  font-size: 0.84rem;
  color: var(--text-tertiary);
}

.delay-1 {
  animation-delay: 0.06s;
}

.delay-2 {
  animation-delay: 0.12s;
}

.delay-3 {
  animation-delay: 0.18s;
}

.delay-4 {
  animation-delay: 0.24s;
}

.delay-5 {
  animation-delay: 0.3s;
}

.delay-6 {
  animation-delay: 0.36s;
}

.delay-7 {
  animation-delay: 0.42s;
}

@keyframes cardIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .page-shell {
    width: calc(100% - 20px);
    margin-top: 14px;
  }

  .hero {
    padding: 24px 18px;
    border-radius: 18px;
  }

  .hero h1 {
    font-size: 1.82rem;
  }

  .top-nav {
    width: 100%;
    justify-content: space-between;
  }

  .top-nav a {
    flex: 1;
    text-align: center;
  }

  .card {
    border-radius: 14px;
    padding: 18px 15px;
  }

  .hero-actions {
    margin-top: 16px;
  }

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

  .metric strong {
    font-size: 1.5rem;
  }
}