:root {
  color-scheme: light;
  --page: #f6f8f7;
  --ink: #111827;
  --text: #26323f;
  --muted: #66727e;
  --line: #dde5e1;
  --panel: #ffffff;
  --soft: #eef4f1;
  --teal: #176b68;
  --olive: #789985;
  --gold: #b2914f;
  --shadow: 0 24px 70px rgba(17, 24, 39, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.62;
}

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

.site-header {
  position: fixed;
  top: 16px;
  left: 50%;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(1120px, calc(100% - 32px));
  min-height: 58px;
  padding: 9px 10px 9px 14px;
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 14px 38px rgba(17, 24, 39, 0.08);
  transform: translateX(-50%);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  white-space: nowrap;
}

.brand img {
  display: block;
  border-radius: 8px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav a {
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1;
}

.nav a:hover {
  background: var(--soft);
  color: var(--ink);
}

.hero {
  position: relative;
  overflow: hidden;
  display: grid;
  align-items: center;
  min-height: 780px;
  padding: 128px 20px 88px;
  background: #e3ebe8;
}

.hero-art {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(246, 248, 247, 0.98) 0%, rgba(246, 248, 247, 0.9) 36%, rgba(246, 248, 247, 0.46) 64%, rgba(246, 248, 247, 0.08) 100%),
    linear-gradient(0deg, rgba(246, 248, 247, 0.98) 0%, rgba(246, 248, 247, 0) 28%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(1120px, 100%);
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

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

h1 {
  max-width: 690px;
  margin-bottom: 22px;
  font-size: 70px;
  line-height: 1.04;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 610px;
  margin-bottom: 30px;
  color: #42505c;
  font-size: 19px;
}

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

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 800;
}

.primary-link {
  background: var(--ink);
  color: #fff;
}

.secondary-link {
  border: 1px solid rgba(17, 24, 39, 0.12);
  background: rgba(255, 255, 255, 0.76);
  color: var(--ink);
}

.hero-badges {
  position: absolute;
  right: max(24px, calc((100vw - 1120px) / 2));
  bottom: 44px;
  z-index: 2;
  display: flex;
  gap: 8px;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 18px 44px rgba(17, 24, 39, 0.11);
  backdrop-filter: blur(18px);
}

.hero-badges span {
  padding: 8px 10px;
  border-radius: 7px;
  background: var(--soft);
  color: #35424d;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

.overview {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: min(1120px, calc(100% - 32px));
  margin: -42px auto 0;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.overview div {
  min-height: 118px;
  padding: 24px;
  border-right: 1px solid var(--line);
}

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

.overview span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
}

.overview strong {
  font-size: 23px;
  line-height: 1.28;
}

.section {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 94px 0;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 36px;
  text-align: center;
}

.section-head.align-left {
  margin-left: 0;
  text-align: left;
}

h2 {
  margin-bottom: 14px;
  font-size: 44px;
  line-height: 1.16;
  letter-spacing: 0;
}

.section-head p:not(.eyebrow),
.start-copy p {
  color: var(--muted);
  font-size: 17px;
}

.function-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.function-card {
  min-height: 220px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 12px 32px rgba(17, 24, 39, 0.05);
}

.function-featured {
  grid-column: span 2;
  background: #132022;
  color: #fff;
}

.function-featured p {
  color: #c8d6d3;
}

.card-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 30px;
  margin-bottom: 22px;
  border-radius: 8px;
  background: var(--soft);
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
}

.function-featured .card-index {
  background: rgba(255, 255, 255, 0.12);
  color: #dcebe6;
}

.function-card h3,
.scene-item span,
.model-card h3 {
  margin-bottom: 8px;
  font-size: 20px;
  line-height: 1.3;
}

.function-card p,
.scene-item p,
.model-card p {
  margin-bottom: 0;
  color: var(--muted);
}

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

.screen-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: end;
}

.screen-grid figure {
  margin: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 18px 42px rgba(17, 24, 39, 0.08);
}

.screen-grid img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.screen-grid figcaption {
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.scenes-section {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 42px;
  align-items: start;
  border-top: 1px solid var(--line);
}

.scene-list {
  display: grid;
  gap: 12px;
}

.scene-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  align-items: start;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

.scene-item span {
  color: var(--ink);
  font-weight: 800;
}

.model-section {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 42px;
  align-items: start;
  border-top: 1px solid var(--line);
}

.reason-section {
  display: grid;
  grid-template-columns: 0.84fr 1.16fr;
  gap: 42px;
  align-items: start;
  border-top: 1px solid var(--line);
}

.reason-copy {
  padding: 42px;
  border-radius: 8px;
  background: #132022;
  color: #fff;
}

.reason-copy .eyebrow {
  color: #b7d4c5;
}

.reason-copy p {
  margin-bottom: 0;
  color: #c8d6d3;
  font-size: 17px;
}

.reason-list {
  display: grid;
  gap: 12px;
}

.reason-list div {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 6px 16px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.8);
}

.reason-list span {
  grid-row: span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: #e5efea;
  color: var(--teal);
  font-weight: 900;
}

.reason-list strong {
  font-size: 19px;
}

.reason-list p {
  margin-bottom: 0;
  color: var(--muted);
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.model-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 32px rgba(17, 24, 39, 0.05);
}

.model-main {
  grid-row: span 2;
  background: #f5f1e7;
}

.model-card span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: 18px;
  padding: 0 10px;
  border-radius: 8px;
  background: #e5efea;
  color: #4f6e5d;
  font-size: 13px;
  font-weight: 800;
}

.model-card h3 {
  font-size: 28px;
}

.model-card ul {
  display: grid;
  gap: 8px;
  margin: 20px 0 0;
  padding-left: 18px;
  color: #53606b;
}

.start-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 34px;
  align-items: center;
  padding-top: 18px;
}

.start-copy {
  padding: 46px;
  border-radius: 8px;
  background: #142033;
  color: #fff;
}

.start-copy .eyebrow {
  color: #bcd8c9;
}

.start-copy p {
  color: #c9d4dd;
}

.start-panel {
  display: grid;
  place-items: center;
  min-height: 340px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(238, 245, 241, 0.94)),
    repeating-linear-gradient(45deg, #eef4f1, #eef4f1 10px, #f8faf9 10px, #f8faf9 20px);
  box-shadow: var(--shadow);
  text-align: center;
}

.start-panel img {
  display: block;
  width: min(260px, 100%);
  height: auto;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 28px rgba(17, 24, 39, 0.12);
}

.start-panel span {
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}

.start-panel strong {
  font-size: 26px;
  line-height: 1.25;
}

.start-panel p {
  max-width: 220px;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 30px 0 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.site-footer div {
  display: grid;
  gap: 4px;
}

.site-footer strong {
  color: var(--ink);
  font-weight: 800;
}

.site-footer a {
  color: var(--muted);
}

.site-footer a:hover {
  color: var(--ink);
}

@media (max-width: 920px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    width: calc(100% - 28px);
    margin: 14px auto 0;
    transform: none;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
  }

  .nav a {
    flex: 0 0 auto;
  }

  .hero {
    min-height: 680px;
    padding-top: 74px;
  }

  .hero-overlay {
    background: rgba(246, 248, 247, 0.84);
  }

  h1 {
    max-width: 600px;
    font-size: 50px;
  }

  h2 {
    font-size: 34px;
  }

  .hero-badges {
    position: relative;
    right: auto;
    bottom: auto;
    width: min(1120px, calc(100% - 40px));
    margin: 34px auto 0;
    justify-content: center;
  }

  .overview,
  .function-grid,
  .screen-grid,
  .scenes-section,
  .reason-section,
  .model-section,
  .model-grid,
  .start-section {
    grid-template-columns: 1fr;
  }

  .function-featured {
    grid-column: auto;
  }

  .overview div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

@media (max-width: 560px) {
  .hero {
    min-height: auto;
    padding: 44px 16px 44px;
  }

  .hero-art {
    opacity: 0.24;
    object-position: 60% center;
  }

  .hero-overlay {
    background: rgba(246, 248, 247, 0.9);
  }

  h1 {
    font-size: 38px;
  }

  h2 {
    font-size: 30px;
  }

  .hero-copy,
  .section-head p:not(.eyebrow),
  .start-copy p {
    font-size: 16px;
  }

  .hero-actions,
  .primary-link,
  .secondary-link {
    width: 100%;
  }

  .hero-badges {
    flex-direction: column;
    width: 100%;
    margin-top: 28px;
  }

  .overview {
    margin-top: 0;
    width: 100%;
    border-radius: 0;
  }

  .section {
    width: calc(100% - 28px);
    padding: 62px 0;
  }

  .scene-item {
    grid-template-columns: 1fr;
  }

  .reason-copy {
    padding: 28px;
  }

  .reason-list div {
    grid-template-columns: 1fr;
  }

  .reason-list span {
    grid-row: auto;
  }

  .start-copy {
    padding: 28px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    width: calc(100% - 28px);
  }
}