:root {
  color-scheme: light;
  --ink: #171513;
  --muted: #665d54;
  --soft: #fbf7ef;
  --paper: #fffdf8;
  --line: rgba(23, 21, 19, 0.12);
  --coral: #f4815e;
  --green: #8cb99b;
  --blue: #7dafe1;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
  font-family: Inter, "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
}

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

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(251, 247, 239, 0.94);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: #4f4942;
  font-size: 14px;
  font-weight: 650;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--paper);
  padding: 0 18px;
  font-size: 14px;
  font-weight: 700;
}

.hero {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #fffdf8 0%, #fbf7ef 100%);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: 46px;
  align-items: center;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 76px 0 70px;
}

.eyebrow {
  margin: 0 0 18px;
  color: #88796a;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
}

h1 {
  max-width: 760px;
  font-size: clamp(42px, 7vw, 78px);
  font-weight: 760;
}

.lead {
  max-width: 680px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 2.4vw, 23px);
  font-weight: 560;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.platform-strip {
  display: grid;
  gap: 12px;
  max-width: 720px;
  margin-top: 26px;
}

.platform-strip-title {
  color: #6b635b;
  font-size: 13px;
  font-weight: 750;
}

.platform-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.platform-pill {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  gap: 7px;
  padding: 0 4px;
  color: #34302c;
  font-size: 13px;
  font-weight: 750;
}

.platform-icon {
  display: inline-grid;
  width: 22px;
  height: 22px;
  place-items: center;
  font-size: 15px;
  font-weight: 850;
  line-height: 1;
}

.platform-icon-x {
  color: #111111;
}

.platform-icon-instagram {
  color: #dd2a7b;
  font-size: 24px;
}

.platform-icon-reddit {
  color: #ff4500;
  font-size: 12px;
}

.platform-icon-xhs {
  border-radius: 4px;
  background: #ff2442;
  color: #ffffff;
  font-size: 6px;
  font-weight: 900;
  letter-spacing: -0.08em;
}

.platform-icon-douyin {
  color: #111111;
  font-size: 20px;
}

.platform-icon-youtube {
  color: #ff0033;
  font-size: 16px;
}

.platform-icon-bilibili {
  color: #00a1d6;
}

.secondary-link {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.7);
  padding: 0 16px;
  color: #4f4942;
  font-size: 14px;
  font-weight: 700;
}

.visual {
  display: grid;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffdf8;
  padding: 18px;
  box-shadow: 0 24px 70px rgba(58, 43, 26, 0.08);
}

.visual-row {
  display: grid;
  grid-template-columns: 58px 1fr auto;
  gap: 14px;
  align-items: center;
  min-height: 78px;
  border: 1px solid rgba(23, 21, 19, 0.08);
  border-radius: 8px;
  background: #ffffff;
  padding: 12px;
}

.visual-icon {
  display: grid;
  width: 58px;
  height: 54px;
  place-items: center;
  border-radius: 8px;
  color: #ffffff;
  font-size: 24px;
  font-weight: 800;
}

.visual-row:nth-child(1) .visual-icon {
  background: var(--coral);
}

.visual-row:nth-child(2) .visual-icon {
  background: var(--green);
}

.visual-row:nth-child(3) .visual-icon {
  background: var(--blue);
}

.visual-title {
  margin: 0;
  font-size: 16px;
  font-weight: 750;
}

.visual-text {
  margin: 4px 0 0;
  color: #746b62;
  font-size: 13px;
  line-height: 1.45;
}

.chip {
  border-radius: 999px;
  background: #f4efe7;
  padding: 5px 10px;
  color: #4f4942;
  font-size: 12px;
  font-weight: 750;
}

.section {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 70px 0;
}

.section + .section {
  border-top: 1px solid var(--line);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 44px;
  align-items: start;
  margin-bottom: 34px;
}

h2 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 730;
}

.section-head p,
.body-copy {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.card {
  min-height: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  padding: 24px;
}

.card h3 {
  font-size: 22px;
  font-weight: 760;
}

.card p,
.card li {
  color: var(--muted);
  font-size: 16px;
}

.card p {
  margin: 12px 0 0;
}

.card ul {
  margin: 14px 0 0;
  padding-left: 20px;
}

.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  counter-reset: step;
}

.step {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  padding: 20px;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  width: 30px;
  height: 30px;
  margin-bottom: 18px;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: #fffdf8;
  font-weight: 800;
}

.step h3 {
  font-size: 18px;
}

.step p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.compare {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fffdf8;
}

.compare-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 20px;
  border-bottom: 1px solid var(--line);
  padding: 22px 24px;
}

.compare-row:last-child {
  border-bottom: 0;
}

.compare-row strong {
  font-size: 17px;
}

.compare-row span {
  color: var(--muted);
}

.note-band {
  border-top: 1px solid rgba(23, 21, 19, 0.14);
  border-bottom: 1px solid rgba(23, 21, 19, 0.14);
  background: #f4d3c2;
}

.note-band .section {
  padding: 58px 0;
}

.final {
  text-align: center;
}

.final p {
  max-width: 700px;
  margin: 20px auto 0;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 30px 20px;
  text-align: center;
  color: #7b7065;
  font-size: 13px;
  font-weight: 650;
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 10px;
}

@media (max-width: 880px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  .hero-inner,
  .section-head,
  .grid-2,
  .grid-3,
  .flow {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    padding: 52px 0;
  }

  .compare-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}