:root {
  --ink: #1e2452;
  --muted: #5f6482;
  --paper: #fffaf0;
  --pink: #ef4797;
  --mint: #8cebc6;
  --sun: #ffd45a;
  --sky: #8ad7ff;
  --purple: #7667db;
  --white: #fff;
  --line: rgba(30, 36, 82, 0.13);
  --shadow: 0 24px 70px rgba(81, 62, 137, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 14%, rgba(140, 235, 198, 0.28), transparent 26rem),
    radial-gradient(circle at 92% 6%, rgba(255, 212, 90, 0.27), transparent 25rem),
    var(--paper);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}

a { color: inherit; }
img { max-width: 100%; display: block; }

.shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: relative;
  z-index: 20;
  padding: 22px 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 900;
  letter-spacing: 0.13em;
}

.brand-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 15px 15px 15px 5px;
  background: var(--pink);
  color: white;
  box-shadow: 0 8px 0 rgba(30, 36, 82, 0.12);
  font-size: 20px;
  transform: rotate(-4deg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
  font-weight: 700;
}

.nav-links a { text-decoration: none; }
.nav-links a:hover { color: var(--pink); }

.hero {
  min-height: 720px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 24px;
  padding: 48px 0 80px;
  position: relative;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--purple);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 5px;
  border-radius: 9px;
  background: var(--mint);
}

h1, h2, h3 {
  margin: 0;
  font-family: "Songti SC", "STSong", Georgia, serif;
  line-height: 1.08;
}

h1 {
  max-width: 700px;
  font-size: clamp(66px, 9vw, 122px);
  letter-spacing: -0.075em;
}

.hero h1 span {
  position: relative;
  color: var(--pink);
  text-shadow: 5px 5px 0 var(--white), 9px 9px 0 rgba(30, 36, 82, 0.1);
}

.lead {
  max-width: 600px;
  margin: 26px 0 0;
  font-size: clamp(18px, 2vw, 22px);
  color: var(--muted);
}

.lead strong { color: var(--ink); }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  min-height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border: 2px solid var(--ink);
  border-radius: 18px 18px 18px 6px;
  background: var(--ink);
  color: white;
  text-decoration: none;
  font-size: 15px;
  font-weight: 900;
  box-shadow: 5px 5px 0 var(--sun);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.button:hover { transform: translate(-2px, -2px); box-shadow: 8px 8px 0 var(--sun); }
.button.secondary { background: white; color: var(--ink); box-shadow: 5px 5px 0 var(--mint); }

.hero-art {
  position: relative;
  min-height: 570px;
  overflow: hidden;
}

.orbit {
  position: absolute;
  inset: 36px 0 0;
  border: 3px dashed rgba(118, 103, 219, 0.25);
  border-radius: 52% 48% 44% 56% / 58% 44% 56% 42%;
  transform: rotate(8deg);
}

.art-card {
  position: absolute;
  inset: 80px 32px 38px 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--ink);
  border-radius: 48% 52% 46% 54% / 55% 41% 59% 45%;
  background: linear-gradient(155deg, white 5%, #fff0f8 96%);
  box-shadow: var(--shadow), 12px 12px 0 var(--mint);
  overflow: hidden;
  transform: rotate(-3deg);
}

.art-card::before,
.art-card::after {
  content: "";
  position: absolute;
  border-radius: 50%;
}

.art-card::before { width: 180px; height: 180px; background: var(--sun); top: -85px; right: -35px; }
.art-card::after { width: 140px; height: 140px; background: var(--sky); bottom: -70px; left: -35px; }

.official-logo {
  position: relative;
  z-index: 2;
  width: 82%;
  filter: drop-shadow(0 16px 18px rgba(239, 71, 151, 0.15));
  transform: rotate(3deg);
}

.note {
  position: absolute;
  z-index: 4;
  display: grid;
  place-items: center;
  width: 92px;
  height: 92px;
  border: 2px solid var(--ink);
  border-radius: 50% 50% 15% 50%;
  font-family: "Songti SC", serif;
  font-weight: 900;
  color: var(--ink);
  box-shadow: 5px 5px 0 rgba(30, 36, 82, 0.13);
}

.note.one { top: 20px; right: 18px; background: var(--sun); transform: rotate(9deg); }
.note.two { bottom: 25px; left: 0; background: var(--mint); transform: rotate(-10deg); }

.section { padding: 94px 0; }

.section-heading {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 50px;
  align-items: end;
  margin-bottom: 42px;
}

.section-heading h2 { font-size: clamp(40px, 6vw, 70px); letter-spacing: -0.045em; }
.section-heading p { margin: 0; color: var(--muted); font-size: 18px; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 2px solid var(--ink);
  border-radius: 30px 30px 30px 8px;
  overflow: hidden;
  background: white;
  box-shadow: 10px 10px 0 var(--sky);
}

.feature {
  min-height: 270px;
  padding: 34px;
  border-right: 1px solid var(--line);
}

.feature:last-child { border-right: 0; }
.feature-num { display: block; margin-bottom: 50px; color: var(--pink); font-weight: 900; }
.feature h3 { margin-bottom: 14px; font-size: 26px; }
.feature p { margin: 0; color: var(--muted); }

.tool-panel {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 68px;
  align-items: center;
  padding: 56px;
  border-radius: 44px 44px 44px 12px;
  background: var(--ink);
  color: white;
  overflow: hidden;
}

.tool-panel::after {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  right: -120px;
  bottom: -150px;
  border-radius: 50%;
  background: var(--pink);
}

.tool-panel h2 { font-size: clamp(38px, 5vw, 60px); }
.tool-panel p { color: rgba(255,255,255,0.72); }

.tool-list { position: relative; z-index: 2; display: grid; gap: 14px; }
.tool-row {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  align-items: center;
  padding: 15px 17px;
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 16px 16px 16px 4px;
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(12px);
}
.tool-icon { font-size: 22px; text-align: center; }
.tool-row strong { display: block; }
.tool-row small { color: rgba(255,255,255,0.65); }

.trust-line {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.trust-line span {
  padding: 8px 12px;
  border-radius: 100px;
  background: rgba(255,255,255,0.1);
  font-size: 12px;
  font-weight: 800;
}

.site-footer { padding: 40px 0; border-top: 1px solid var(--line); }
.footer-grid { display: flex; justify-content: space-between; gap: 30px; align-items: center; }
.footer-copy { color: var(--muted); font-size: 13px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; font-size: 13px; font-weight: 800; }
.footer-links a { text-decoration: none; }

.legal-hero { padding: 80px 0 50px; }
.legal-hero h1 { font-size: clamp(46px, 7vw, 86px); max-width: 900px; }
.legal-meta { margin-top: 22px; color: var(--muted); }
.legal-wrap { display: grid; grid-template-columns: 230px minmax(0, 760px); gap: 70px; padding: 30px 0 100px; }
.legal-aside { align-self: start; position: sticky; top: 26px; padding: 20px; background: white; border: 1px solid var(--line); border-radius: 20px 20px 20px 5px; }
.legal-aside strong { display: block; margin-bottom: 10px; }
.legal-aside a { font-size: 13px; color: var(--pink); }
.legal-content section { margin-bottom: 44px; }
.legal-content h2 { font-family: "PingFang SC", sans-serif; font-size: 24px; letter-spacing: -0.02em; margin-bottom: 13px; }
.legal-content p, .legal-content li { color: var(--muted); }
.legal-content ul { padding-left: 22px; }
.legal-content a { color: var(--purple); font-weight: 700; }

.support-card {
  padding: 34px;
  margin-top: 26px;
  background: white;
  border: 2px solid var(--ink);
  border-radius: 26px 26px 26px 7px;
  box-shadow: 8px 8px 0 var(--mint);
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 70px; }
  .hero-art { min-height: 500px; }
  .section-heading, .tool-panel { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .feature:last-child { border-bottom: 0; }
  .feature-num { margin-bottom: 24px; }
  .legal-wrap { grid-template-columns: 1fr; gap: 30px; }
  .legal-aside { position: static; }
}

@media (max-width: 640px) {
  .shell { width: min(100% - 28px, 1180px); }
  .site-header { padding: 16px 0; }
  .nav { align-items: flex-start; }
  .nav-links { gap: 13px; font-size: 12px; padding-top: 9px; }
  .nav-links .optional { display: none; }
  .brand { font-size: 13px; }
  .brand-mark { width: 38px; height: 38px; border-radius: 12px 12px 12px 4px; }
  .hero { min-height: auto; padding: 70px 0 45px; }
  h1 { font-size: clamp(58px, 20vw, 82px); }
  .lead { font-size: 18px; }
  .actions { flex-direction: column; }
  .button { width: 100%; }
  .hero-art { min-height: 390px; }
  .art-card { inset: 62px 20px 28px 25px; }
  .note { width: 68px; height: 68px; font-size: 12px; }
  .section { padding: 65px 0; }
  .section-heading { gap: 18px; }
  .feature { padding: 28px; }
  .tool-panel { padding: 34px 24px; gap: 34px; border-radius: 30px 30px 30px 9px; }
  .footer-grid { align-items: flex-start; flex-direction: column; }
  .legal-hero { padding-top: 55px; }
  .legal-wrap { padding-bottom: 70px; }
}

@media (prefers-reduced-motion: no-preference) {
  .note.one { animation: bob 5s ease-in-out infinite; }
  .note.two { animation: bob 5s ease-in-out 1.2s infinite; }
  @keyframes bob { 50% { translate: 0 -10px; } }
}