:root {
  --ink: #0b1726;
  --ink-2: #24364b;
  --muted: #637288;
  --paper: #f4f8fb;
  --paper-2: #e9f0f7;
  --mint: #e5fbf6;
  --teal: #0d7e8f;
  --teal-2: #0d3f57;
  --green: #23b79c;
  --orange: #ff8a4c;
  --gold: #f5c76b;
  --blue: #3762f2;
  --line: rgba(11, 23, 38, 0.11);
  --white: #fffdf8;
  --shadow: 0 28px 90px rgba(11, 23, 38, 0.16);
  --soft-shadow: 0 18px 50px rgba(11, 23, 38, 0.08);
  --radius-xl: 34px;
  --radius-lg: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 0% 0%, rgba(55, 98, 242, 0.14), transparent 34rem),
    radial-gradient(circle at 95% 5%, rgba(35, 183, 156, 0.2), transparent 38rem),
    radial-gradient(circle at 72% 28%, rgba(255, 138, 76, 0.13), transparent 26rem),
    linear-gradient(180deg, #fbfdff 0%, var(--paper) 42%, #e8f3f5 100%);
  font-family: "MiSans", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}

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

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

.site-shell {
  min-height: 100vh;
  overflow: hidden;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 76px);
  border-bottom: 1px solid rgba(16, 32, 29, 0.08);
  background: rgba(251, 253, 255, 0.78);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(13, 126, 143, 0.12);
  border-radius: 16px;
  box-shadow: 0 14px 30px rgba(13, 126, 143, 0.18);
}

.brand-mark img {
  width: 82%;
  height: 82%;
  object-fit: contain;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: rgba(16, 32, 29, 0.68);
  font-size: 14px;
  font-weight: 700;
}

.nav-links a {
  transition: color 0.2s ease, transform 0.2s ease;
}

.nav-links a:hover {
  color: var(--teal);
  transform: translateY(-1px);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  color: var(--white);
  font-weight: 900;
  background: linear-gradient(135deg, var(--blue), var(--teal) 55%, var(--green));
  border: 0;
  border-radius: 999px;
  box-shadow: 0 18px 34px rgba(13, 126, 143, 0.22);
}

.button.secondary {
  color: var(--teal-2);
  background: rgba(255, 253, 248, 0.82);
  border: 1px solid rgba(14, 101, 92, 0.18);
  box-shadow: none;
}

.button.orange {
  background: linear-gradient(135deg, var(--orange), #e3643a);
  box-shadow: 0 18px 34px rgba(255, 138, 76, 0.24);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
  padding: clamp(64px, 8vw, 120px) clamp(20px, 5vw, 76px) 44px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 26px clamp(18px, 4vw, 58px) auto auto;
  width: min(56vw, 720px);
  height: min(56vw, 720px);
  background:
    linear-gradient(135deg, rgba(55, 98, 242, 0.12), rgba(35, 183, 156, 0.14), rgba(255, 138, 76, 0.1)),
    repeating-linear-gradient(45deg, rgba(11, 23, 38, 0.035) 0 1px, transparent 1px 18px);
  border-radius: 42% 58% 52% 48%;
  filter: blur(0.2px);
  z-index: -1;
}

.hero-copy {
  max-width: 720px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  color: var(--teal);
  background: rgba(13, 126, 143, 0.08);
  border: 1px solid rgba(13, 126, 143, 0.14);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 900;
}

.hero h1 {
  margin: 22px 0 18px;
  max-width: 760px;
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  font-size: clamp(44px, 6.2vw, 86px);
  line-height: 1.03;
  letter-spacing: -0.05em;
}

.hero h1 span {
  display: inline-block;
  color: var(--orange);
}

.lead {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(16px, 1.7vw, 20px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
}

.metric {
  padding: 16px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--soft-shadow);
}

.metric strong {
  display: block;
  font-size: 26px;
  line-height: 1.1;
}

.metric span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.hero-visual {
  position: relative;
  min-height: 560px;
}

.visual-card {
  position: relative;
  padding: 18px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.9), rgba(244, 248, 251, 0.62)),
    rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 38px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.visual-card::after {
  content: "";
  position: absolute;
  inset: auto -80px -120px auto;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(55, 98, 242, 0.18), transparent 66%);
}

.hero-product {
  width: 100%;
  border-radius: 28px;
}

.floating-note {
  position: absolute;
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(11, 23, 38, 0.1);
  border-radius: 18px;
  box-shadow: 0 18px 42px rgba(16, 32, 29, 0.14);
  backdrop-filter: blur(16px);
}

.floating-note strong {
  font-size: 14px;
}

.floating-note span {
  color: var(--muted);
  font-size: 12px;
}

.floating-note.one {
  top: 58px;
  left: -26px;
}

.floating-note.two {
  right: -20px;
  bottom: 80px;
}

.section {
  padding: clamp(56px, 8vw, 110px) clamp(20px, 5vw, 76px);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}

.section-title {
  max-width: 820px;
  margin: 0;
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  font-size: clamp(32px, 4.5vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.05em;
}

.section-kicker {
  max-width: 420px;
  color: var(--muted);
  font-size: 15px;
}

.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 16px;
}

.bento-card {
  min-height: 230px;
  padding: 28px;
  background: rgba(255, 253, 248, 0.82);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--soft-shadow);
  overflow: hidden;
}

.bento-card.large {
  grid-column: span 7;
}

.bento-card.medium {
  grid-column: span 5;
}

.bento-card.small {
  grid-column: span 4;
}

.bento-card.dark {
  color: var(--white);
  background:
    radial-gradient(circle at 100% 0%, rgba(255, 138, 76, 0.28), transparent 40%),
    radial-gradient(circle at 10% 12%, rgba(55, 98, 242, 0.36), transparent 34%),
    linear-gradient(145deg, #10253d, #0d3f57 56%, #092c38);
  border-color: rgba(255, 255, 255, 0.14);
}

.bento-card h3 {
  margin: 0 0 10px;
  font-size: 24px;
}

.bento-card p {
  margin: 0;
  color: var(--muted);
}

.bento-card.dark p {
  color: rgba(255, 253, 248, 0.74);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.pill {
  padding: 8px 11px;
  color: var(--teal-2);
  background: rgba(14, 101, 92, 0.08);
  border: 1px solid rgba(14, 101, 92, 0.1);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 900;
}

.dark .pill {
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.16);
}

.workflow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.step {
  position: relative;
  padding: 24px;
  min-height: 210px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(236, 244, 250, 0.86));
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: var(--soft-shadow);
}

.step-num {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 18px;
  color: var(--white);
  background: var(--teal);
  border-radius: 14px;
  font-weight: 900;
}

.step h3 {
  margin: 0 0 8px;
}

.step p {
  margin: 0;
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 20px;
  align-items: stretch;
}

.deep-panel {
  padding: clamp(34px, 5vw, 56px);
  color: var(--white);
  background:
    radial-gradient(circle at 92% 8%, rgba(245, 199, 107, 0.22), transparent 32%),
    radial-gradient(circle at 10% 0%, rgba(55, 98, 242, 0.34), transparent 34%),
    linear-gradient(135deg, #10253d, var(--teal-2));
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.deep-panel p {
  color: rgba(255, 253, 248, 0.76);
}

.check-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
}

.check-list li {
  padding: 12px 14px;
  background: rgba(255, 253, 248, 0.1);
  border: 1px solid rgba(255, 253, 248, 0.14);
  border-radius: 16px;
}

.card {
  padding: 30px;
  background: rgba(255, 253, 248, 0.84);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--soft-shadow);
}

.card h3 {
  margin: 0 0 10px;
  font-size: 24px;
}

.card p {
  margin: 0 0 12px;
  color: var(--muted);
}

.download-strip {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  padding: clamp(34px, 5vw, 54px);
  color: var(--white);
  background:
    radial-gradient(circle at 12% 12%, rgba(245, 199, 107, 0.28), transparent 30%),
    radial-gradient(circle at 88% 12%, rgba(35, 183, 156, 0.2), transparent 34%),
    linear-gradient(135deg, #10253d, var(--teal-2) 62%, #081f2c);
  border-radius: 38px;
  box-shadow: var(--shadow);
}

.download-strip h2 {
  margin: 0 0 8px;
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.12;
}

.download-strip p {
  margin: 0;
  color: rgba(255, 253, 248, 0.76);
}

.doc-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 28px;
  padding: 46px clamp(20px, 5vw, 76px) 80px;
}

.doc-sidebar {
  position: sticky;
  top: 92px;
  align-self: start;
  padding: 20px;
  background: rgba(255, 253, 248, 0.78);
  border: 1px solid var(--line);
  border-radius: 24px;
}

.doc-sidebar a {
  display: block;
  padding: 8px 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.doc {
  padding: clamp(28px, 5vw, 54px);
  background: rgba(255, 253, 248, 0.88);
  border: 1px solid var(--line);
  border-radius: 32px;
  box-shadow: var(--shadow);
}

.doc h1 {
  margin: 0 0 10px;
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.1;
}

.doc h2 {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.doc p,
.doc li {
  color: #53645f;
}

.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
}

.doc th,
.doc td {
  padding: 12px;
  text-align: left;
  border: 1px solid var(--line);
}

.doc th {
  background: rgba(14, 101, 92, 0.09);
}

.footer {
  padding: 36px clamp(20px, 5vw, 76px);
  color: rgba(255, 253, 248, 0.7);
  background: #081f2c;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 22px;
}

.footer a {
  display: block;
  margin: 6px 0;
  color: rgba(255, 253, 248, 0.84);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-brand img {
  width: 52px;
  height: 52px;
  flex: 0 0 auto;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.24);
}


.muted {
  color: var(--muted);
}

@media (max-width: 980px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  .hero,
  .split,
  .download-strip,
  .doc-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: auto;
  }

  .hero-metrics,
  .workflow {
    grid-template-columns: 1fr;
  }

  .section-head {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .bento-card,
  .bento-card.large,
  .bento-card.medium,
  .bento-card.small {
    grid-column: auto;
  }

  .floating-note {
    position: static;
    margin-top: 12px;
  }

  .doc-sidebar {
    position: static;
  }
}

@media (max-width: 560px) {
  .hero {
    padding-top: 42px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .nav-links .button {
    width: 100%;
  }
}