:root {
  color-scheme: dark;
  --bg: #090909;
  --ink: #f6f1e7;
  --muted: #9c9486;
  --line: rgba(246, 241, 231, 0.13);
  --panel: rgba(255, 255, 255, 0.065);
  --gold: #d7a84f;
  --gold-soft: #f0d38c;
  --shadow: 0 34px 90px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 80% 8%, rgba(215, 168, 79, 0.16), transparent 30%),
    radial-gradient(circle at 10% 16%, rgba(255, 255, 255, 0.06), transparent 26%),
    linear-gradient(180deg, #090909 0%, #11100e 48%, #090909 100%);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  padding: 16px clamp(20px, 5vw, 88px);
  border-bottom: 1px solid var(--line);
  background: rgba(9, 9, 9, 0.72);
  backdrop-filter: blur(22px);
}

.brand {
  font-size: 22px;
  font-weight: 950;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #b9ad98;
  font-size: 14px;
  white-space: nowrap;
}

.nav-cta {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  border-radius: 8px;
  color: #090909;
  background: linear-gradient(135deg, var(--gold-soft), var(--gold));
}

.hero {
  position: relative;
  min-height: clamp(620px, calc(100vh - 72px), 860px);
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  padding: clamp(46px, 6vw, 74px) clamp(20px, 5vw, 88px);
  overflow: hidden;
  background:
    linear-gradient(270deg, rgba(4, 4, 4, 0.84) 0%, rgba(4, 4, 4, 0.58) 28%, rgba(4, 4, 4, 0.16) 58%, rgba(4, 4, 4, 0.04) 100%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.04), rgba(0, 0, 0, 0.3)),
    url("assets/hero-wall-world.png") center right / cover no-repeat;
  border-bottom: 1px solid var(--line);
}

.hero::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(rgba(246, 241, 231, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(246, 241, 231, 0.03) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(270deg, rgba(0, 0, 0, 0.55), transparent 72%);
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 620px;
  padding: clamp(18px, 2.4vw, 30px);
  border: 1px solid rgba(246, 241, 231, 0.1);
  border-radius: 8px;
  background: linear-gradient(270deg, rgba(4, 4, 4, 0.7), rgba(4, 4, 4, 0.24));
  backdrop-filter: blur(8px);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 20px;
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1.02;
  letter-spacing: 0;
  font-weight: 950;
}

h1 span {
  color: transparent;
  background: linear-gradient(90deg, var(--gold-soft), var(--gold), #8c6726);
  background-clip: text;
  -webkit-background-clip: text;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(38px, 5.6vw, 76px);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: 28px;
}

.hero-line {
  max-width: 540px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(17px, 1.8vw, 25px);
  line-height: 1.28;
}

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

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 950;
}

.button.primary {
  color: #090909;
  background: linear-gradient(135deg, var(--gold-soft), var(--gold));
  box-shadow: 0 18px 42px rgba(215, 168, 79, 0.2);
}

.button.secondary {
  color: var(--ink);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.06);
}

.button.full {
  width: 100%;
}

.signal-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.035);
}

.signal-strip div {
  min-height: 126px;
  display: grid;
  align-content: center;
  gap: 8px;
  padding: 24px clamp(20px, 5vw, 88px);
  border-right: 1px solid var(--line);
}

.signal-strip div:last-child {
  border-right: 0;
}

.signal-strip strong {
  color: var(--gold-soft);
  font-size: clamp(24px, 3vw, 42px);
}

.signal-strip span {
  color: var(--muted);
  font-weight: 800;
}

.section {
  padding: clamp(66px, 8vw, 116px) clamp(20px, 5vw, 88px);
}

.automation-section {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(360px, 1.22fr);
  gap: clamp(28px, 6vw, 76px);
  align-items: start;
  padding: clamp(56px, 6vw, 86px) clamp(20px, 5vw, 88px) clamp(78px, 8vw, 108px);
  border-top: 1px solid var(--line);
  background:
    radial-gradient(circle at 15% 10%, rgba(215, 168, 79, 0.12), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.015));
}

.automation-copy {
  position: sticky;
  top: 104px;
}

.automation-copy h2 {
  max-width: 760px;
  margin-bottom: 24px;
}

.automation-copy p:not(.eyebrow) {
  max-width: 620px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 26px);
  line-height: 1.55;
}

.automation-cta {
  margin-top: 10px;
}

.automation-board {
  display: grid;
  gap: 18px;
}

.workflow-image {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

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

.compare-card,
.mode-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.085), rgba(255, 255, 255, 0.035));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.compare-card {
  min-height: 260px;
}

.accent-card {
  border-color: rgba(215, 168, 79, 0.36);
  background:
    radial-gradient(circle at 80% 8%, rgba(215, 168, 79, 0.16), transparent 34%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.04));
}

.muted-card {
  opacity: 0.82;
}

.compare-card span {
  display: block;
  margin-bottom: 24px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 950;
  letter-spacing: 0.12em;
}

.compare-card strong {
  display: block;
  margin-bottom: 10px;
  color: var(--ink);
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.05;
}

.compare-card p {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.mode-title {
  margin-bottom: 18px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 950;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.mode-card ol {
  display: grid;
  gap: 0;
  padding: 0;
  margin: 0;
  list-style: none;
}

.mode-card li {
  display: grid;
  grid-template-columns: minmax(120px, 0.34fr) minmax(0, 1fr);
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.mode-card li:first-child {
  border-top: 0;
}

.mode-card li strong {
  color: var(--ink);
  font-size: 20px;
}

.mode-card li span {
  color: var(--muted);
  line-height: 1.65;
}

.section-title {
  display: grid;
  gap: 12px;
  margin-bottom: 34px;
}

.plan-section,
.order-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: clamp(28px, 6vw, 72px);
  align-items: start;
}

.plan-card,
.order-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.plan-label {
  margin-bottom: 8px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.price {
  margin: 28px 0;
  font-size: 56px;
  font-weight: 950;
}

.price span {
  color: var(--muted);
  font-size: 17px;
}

.plan-card ul {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 0 0 26px;
  list-style: none;
  color: #c6bdad;
  font-weight: 800;
}

.tutorial-section {
  background:
    radial-gradient(circle at 80% 12%, rgba(215, 168, 79, 0.14), transparent 30%),
    #0f0f0f;
}

.tutorial-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.tutorial-card {
  min-height: 280px;
  display: grid;
  align-content: end;
  gap: 12px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(150deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.025)),
    radial-gradient(circle at 80% 20%, rgba(215, 168, 79, 0.2), transparent 34%);
}

.tutorial-card span {
  color: var(--gold);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.tutorial-card strong {
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1;
}

.tutorial-card em {
  color: var(--muted);
  font-style: normal;
  font-weight: 800;
}

.article-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  background: rgba(255, 255, 255, 0.035);
}

.article-links a {
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.04);
  font-size: 22px;
  font-weight: 950;
}

.order-section {
  align-items: center;
}

.order-card {
  display: grid;
  gap: 16px;
}

.order-card p {
  margin: 0;
  font-size: 30px;
  font-weight: 950;
}

.order-card small {
  color: var(--muted);
  font-weight: 800;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 28px clamp(20px, 5vw, 88px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.article-page {
  max-width: 820px;
  margin: 0 auto;
  padding: clamp(44px, 7vw, 88px) 20px;
}

.article-page a {
  color: var(--gold);
  font-weight: 900;
}

.article-page h1 {
  font-size: clamp(36px, 6vw, 62px);
  line-height: 1.05;
}

.article-page h2 {
  margin-top: 34px;
  font-size: clamp(26px, 4vw, 36px);
}

.article-page p,
.article-page li {
  color: #a8a091;
  font-size: 17px;
  line-height: 1.8;
}

.article-page ul,
.article-page ol {
  padding-left: 24px;
}

@media (max-width: 980px) {
  .hero {
    min-height: auto;
  }

  .plan-section,
  .order-section,
  .tutorial-grid,
  .article-links,
  .signal-strip {
    grid-template-columns: 1fr;
  }

  .automation-section {
    grid-template-columns: 1fr;
  }

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

  .mode-card li {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .automation-copy {
    position: static;
  }
  .signal-strip div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .signal-strip div:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 640px) {
  .site-header {
    position: static;
  }

  .nav {
    gap: 12px;
  }

  .hero {
    min-height: auto;
    justify-content: stretch;
    padding: 28px 16px 44px;
    background-position: center;
  }

  .hero-copy {
    max-width: none;
    width: 100%;
  }

  h1 {
    font-size: 42px;
  }

  h2 {
    font-size: 36px;
  }

  .hero-line,
  .automation-copy p:not(.eyebrow) {
    font-size: 17px;
  }

  .automation-section {
    padding: 44px 16px 64px;
  }

  .compare-card,
  .mode-card {
    padding: 20px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    padding: 22px 16px;
  }

  .button,
  .hero-actions {
    width: 100%;
  }
}