:root {
  --ink: #10203f;
  --muted: #53627a;
  --line: #dfe7f3;
  --paper: #ffffff;
  --wash: #f5f8fc;
  --blue: #1463ff;
  --blue-deep: #0b3f9c;
  --green: #1fa971;
  --orange: #ff7a1a;
  --shadow: 0 20px 60px rgba(11, 29, 58, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--wash);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

body.menu-open {
  overflow: hidden;
}

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

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: 72px;
  padding: 0 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: #fff;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.site-header.scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 30px rgba(11, 29, 58, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.18);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 15px;
  font-weight: 800;
}

.nav-links a,
.header-action,
.primary-action,
.secondary-action {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.header-action {
  padding: 0 18px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 900;
}

.hero {
  position: relative;
  height: 82svh;
  min-height: 600px;
  max-height: 780px;
  overflow: hidden;
  color: #fff;
}

.hero picture,
.hero picture img,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero picture img {
  object-fit: cover;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(5, 18, 38, 0.84) 0%, rgba(7, 28, 58, 0.58) 46%, rgba(7, 28, 58, 0.26) 100%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.28) 0%, rgba(0, 0, 0, 0.08) 48%, rgba(0, 0, 0, 0.32) 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(1180px, calc(100% - 64px));
  height: 100%;
  margin: 0 auto;
  padding-top: 108px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #b9d5ff;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: 72px;
  line-height: 1.02;
  font-weight: 950;
}

.hero-copy {
  max-width: 680px;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 21px;
  line-height: 1.6;
  font-weight: 650;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.primary-action,
.secondary-action {
  min-width: 150px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 900;
}

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

.secondary-action {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.72);
}

.hero-stats {
  width: min(620px, 100%);
  margin: 42px 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.hero-stats div {
  padding: 18px 20px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
}

.hero-stats dt {
  font-size: 30px;
  line-height: 1;
  font-weight: 950;
}

.hero-stats dd {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
  font-weight: 800;
}

.intro-band {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.intro-copy {
  width: min(1180px, calc(100% - 64px));
  margin: 0 auto;
  padding: 34px 0;
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 36px;
  align-items: center;
}

.intro-copy p {
  margin: 0;
  color: var(--ink);
  font-size: 24px;
  line-height: 1.35;
  font-weight: 900;
}

.intro-copy p + p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
  font-weight: 700;
}

.section {
  padding: 96px 0;
}

.section-light {
  background: var(--wash);
}

.section-ink {
  color: #fff;
  background: #10203f;
}

.section-head,
.feature-grid,
.scene-grid,
.screen-layout,
.proof-section,
.status-board,
.site-footer {
  width: min(1180px, calc(100% - 64px));
  margin: 0 auto;
}

.section-head {
  margin-bottom: 34px;
}

.section-head h2,
.proof-copy h2 {
  max-width: 760px;
  margin-bottom: 0;
  font-size: 44px;
  line-height: 1.15;
  font-weight: 950;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.feature-card,
.status-board article {
  min-height: 250px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 10px 30px rgba(11, 29, 58, 0.06);
}

.feature-card.accent {
  border-color: rgba(31, 169, 113, 0.32);
  background: #f1fbf6;
}

.feature-index {
  color: var(--blue);
  font-size: 13px;
  font-weight: 950;
}

.feature-card h3,
.status-board h3 {
  margin: 24px 0 12px;
  font-size: 24px;
  line-height: 1.2;
  font-weight: 950;
}

.feature-card p,
.status-board p,
.proof-copy p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
  font-weight: 650;
}

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

.scene-grid article {
  min-height: 190px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.scene-grid img {
  width: 36px;
  height: 36px;
  margin-bottom: 22px;
}

.scene-grid span {
  display: block;
  margin-bottom: 10px;
  font-size: 21px;
  font-weight: 950;
}

.scene-grid p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  line-height: 1.55;
  font-weight: 700;
}

.screen-layout {
  display: grid;
  grid-template-columns: minmax(260px, 420px) 1fr;
  gap: 34px;
  align-items: center;
}

.screen-stack {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.phone-shot {
  margin: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.phone-shot img {
  width: 100%;
  border-radius: 6px;
}

.phone-shot figcaption {
  padding: 14px 4px 2px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 900;
  text-align: center;
}

.main-shot {
  transform: translateY(18px);
}

.proof-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
}

.proof-copy p {
  max-width: 560px;
}

.proof-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.proof-list div {
  padding: 24px;
  border-left: 5px solid var(--green);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 32px rgba(11, 29, 58, 0.07);
}

.proof-list strong,
.proof-list span {
  display: block;
}

.proof-list strong {
  margin-bottom: 8px;
  font-size: 20px;
  font-weight: 950;
}

.proof-list span {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 700;
}

.review-section {
  background: #fff;
}

.status-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.status-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot.ready {
  background: var(--green);
}

.status-dot.pending {
  background: var(--orange);
}

.status-dot.blocked {
  background: #d83b3b;
}

.site-footer {
  padding: 36px 0;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-footer strong {
  font-size: 20px;
  font-weight: 950;
}

.site-footer p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

@media (max-width: 980px) {
  .site-header {
    padding: 0 22px;
  }

  .nav-links {
    display: none;
  }

  h1 {
    font-size: 54px;
  }

  .hero-copy {
    font-size: 18px;
  }

  .feature-grid,
  .scene-grid,
  .status-board {
    grid-template-columns: repeat(2, 1fr);
  }

  .screen-layout,
  .proof-section,
  .intro-copy {
    grid-template-columns: 1fr;
  }

  .screen-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .site-header {
    height: 64px;
  }

  .brand span {
    max-width: 128px;
    line-height: 1.15;
  }

  .header-action {
    padding: 0 14px;
  }

  .hero {
    height: auto;
    min-height: 86svh;
  }

  .hero-inner,
  .intro-copy,
  .section-head,
  .feature-grid,
  .scene-grid,
  .screen-layout,
  .proof-section,
  .status-board,
  .site-footer {
    width: min(100% - 34px, 1180px);
  }

  .hero-inner {
    padding-top: 86px;
    padding-bottom: 46px;
  }

  h1 {
    font-size: 42px;
  }

  .hero-stats,
  .feature-grid,
  .scene-grid,
  .screen-stack,
  .status-board {
    grid-template-columns: 1fr;
  }

  .hero-stats div {
    padding: 14px 16px;
  }

  .intro-copy p {
    font-size: 22px;
  }

  .section {
    padding: 70px 0;
  }

  .section-head h2,
  .proof-copy h2 {
    font-size: 34px;
  }

  .feature-card,
  .scene-grid article,
  .status-board article {
    min-height: auto;
  }

  .main-shot {
    transform: none;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-links {
    justify-content: flex-start;
  }
}