:root {
  color-scheme: light;
  --navy: #063b66;
  --deep: #02233d;
  --blue: #0b5fa5;
  --cyan: #4aacef;
  --ice: #e8f4fd;
  --mist: #f2f4f8;
  --paper: #ffffff;
  --ink: #132238;
  --muted: #617086;
  --line: #dce5ef;
  --gold: #b8944e;
  --ok: #22a06b;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(2, 35, 61, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--mist);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

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

img {
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 64px;
  padding: 0 clamp(18px, 5vw, 72px);
  background: rgba(2, 35, 61, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-size: 17px;
  font-weight: 800;
}

.brand img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 22px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  font-weight: 600;
}

.nav a {
  transition: color 160ms ease;
}

.nav a:hover {
  color: var(--white);
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: min(680px, calc(100svh - 64px));
  display: grid;
  align-items: center;
  padding: clamp(46px, 6.4vw, 82px) clamp(18px, 5vw, 72px);
  background:
    radial-gradient(circle at 80% 8%, rgba(74, 172, 239, 0.28), transparent 34%),
    radial-gradient(circle at 10% 72%, rgba(11, 95, 165, 0.34), transparent 30%),
    linear-gradient(135deg, var(--deep) 0%, var(--navy) 58%, #0a4f86 100%);
  color: var(--white);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(74, 172, 239, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 172, 239, 0.08) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse at center, #000 26%, transparent 74%);
}

.hero-grid {
  position: relative;
  z-index: 1;
  max-width: 1220px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(330px, 0.74fr);
  gap: clamp(38px, 7vw, 82px);
  align-items: center;
}

.hero-copy {
  animation: rise 620ms ease-out both;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 7px 14px;
  border: 1px solid rgba(74, 172, 239, 0.36);
  border-radius: 999px;
  background: rgba(74, 172, 239, 0.1);
  color: #bfe7ff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(36px, 5.2vw, 64px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero p.lead {
  max-width: 680px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(16px, 1.8vw, 20px);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.btn {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
  font-size: 14px;
  font-weight: 800;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.btn.primary {
  background: var(--blue);
  border-color: var(--blue);
  box-shadow: 0 12px 30px rgba(11, 95, 165, 0.34);
}

.btn:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.14);
}

.btn.primary:hover {
  background: #0d6dbd;
  border-color: #0d6dbd;
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 24px;
  color: rgba(255, 255, 255, 0.66);
  font-size: 13px;
}

.hero-proof span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 18px var(--cyan);
}

.visual-stage {
  position: relative;
  min-height: 470px;
}

.phone {
  position: relative;
  width: min(310px, 82vw);
  margin: 0 auto;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 36px;
  background: linear-gradient(145deg, rgba(255,255,255,0.24), rgba(255,255,255,0.05));
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(8px);
  animation: float 7s ease-in-out infinite;
}

.phone-screen {
  overflow: hidden;
  min-height: 485px;
  border-radius: 26px;
  background: #f9fbfe;
  color: var(--ink);
}

.mock-cover {
  height: 136px;
  padding: 18px;
  background:
    linear-gradient(180deg, rgba(2,35,61,0.18), rgba(2,35,61,0.55)),
    linear-gradient(135deg, #e8eef5, #cbd9e6 44%, #eff6fb);
}

.mock-cover strong {
  display: block;
  margin-top: 48px;
  color: #fff;
  font-size: 18px;
}

.mock-cover span {
  color: rgba(255, 255, 255, 0.76);
  font-size: 12px;
}

.mock-search {
  display: flex;
  align-items: center;
  margin: -18px 18px 14px;
  padding: 10px 14px;
  border-radius: 999px;
  background: #fff;
  color: #9aa6b7;
  font-size: 13px;
  box-shadow: 0 10px 24px rgba(19, 34, 56, 0.12);
}

.mock-category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding: 14px 18px 18px;
}

.mock-category {
  text-align: center;
  font-size: 11px;
  color: #334155;
}

.mock-thumb {
  display: block;
  width: 42px;
  height: 42px;
  margin: 0 auto 6px;
  border-radius: 50%;
  background: linear-gradient(145deg, #d8e0e8, #f8fafc);
  border: 1px solid #edf1f6;
}

.mock-tabs {
  display: flex;
  gap: 8px;
  padding: 0 18px 16px;
}

.mock-tabs span {
  padding: 6px 12px;
  border-radius: 999px;
  background: #eef3f8;
  color: #56657a;
  font-size: 12px;
  font-weight: 700;
}

.mock-tabs span:first-child {
  background: var(--gold);
  color: #fff;
}

.mock-product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  padding: 0 18px 18px;
}

.mock-product {
  height: 96px;
  border-radius: 14px;
  background: linear-gradient(145deg, #fff, #edf3f8);
  border: 1px solid #edf1f6;
}

.side-panel {
  position: absolute;
  right: 0;
  bottom: 34px;
  width: 220px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(14px);
}

.side-panel strong {
  display: block;
  margin-bottom: 6px;
}

.side-panel p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

.section {
  padding: clamp(58px, 8vw, 108px) clamp(18px, 5vw, 72px);
}

.section.alt {
  background: var(--paper);
}

.section.dark {
  background: var(--deep);
  color: var(--white);
}

.section-inner {
  max-width: 1220px;
  margin: 0 auto;
}

.section-head {
  max-width: 790px;
  margin-bottom: 34px;
}

.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.16;
  letter-spacing: 0;
}

.section.dark .section-head h2 {
  color: var(--white);
}

.section-head p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.section.dark .section-head p {
  color: rgba(255, 255, 255, 0.74);
}

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

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.tile {
  min-height: 168px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.tile:hover {
  transform: translateY(-3px);
  border-color: rgba(11, 95, 165, 0.32);
  box-shadow: 0 16px 40px rgba(2, 35, 61, 0.08);
}

.tile strong {
  display: block;
  margin-bottom: 8px;
  color: var(--navy);
  font-size: 18px;
}

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

.icon-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 16px;
  border-radius: 12px;
  background: var(--ice);
  color: var(--blue);
  font-size: 20px;
  font-weight: 900;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(30px, 6vw, 76px);
  align-items: center;
}

.product-board {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.board-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}

.board-title {
  font-weight: 900;
  color: var(--navy);
}

.board-actions {
  display: flex;
  gap: 8px;
}

.board-actions span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #d2dce7;
}

.board-body {
  display: grid;
  grid-template-columns: 190px 1fr;
  min-height: 360px;
}

.board-menu {
  padding: 18px;
  border-right: 1px solid var(--line);
  background: #f7fafe;
}

.board-menu span {
  display: block;
  margin-bottom: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  color: #53657a;
  font-size: 13px;
  font-weight: 700;
}

.board-menu span.active {
  background: var(--blue);
  color: #fff;
}

.board-content {
  padding: 18px;
}

.board-stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.board-stat {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.board-stat b {
  display: block;
  color: var(--navy);
  font-size: 22px;
}

.board-stat small {
  color: var(--muted);
}

.board-table {
  display: grid;
  gap: 10px;
}

.board-line {
  height: 42px;
  border-radius: 8px;
  background: linear-gradient(90deg, #eff5fb, #f8fbfe);
  border: 1px solid #e8eef6;
}

.steps {
  counter-reset: step;
  display: grid;
  gap: 0;
}

.step {
  counter-increment: step;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.step::before {
  content: counter(step);
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  background: var(--blue);
  color: var(--white);
  font-weight: 900;
}

.step strong {
  display: block;
  color: var(--navy);
  margin-bottom: 4px;
}

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

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #3b4a5d;
  font-size: 13px;
  font-weight: 700;
}

.table-wrap {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 15px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.table th {
  color: var(--navy);
  font-size: 14px;
}

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

.faq {
  display: grid;
  gap: 12px;
  max-width: 980px;
}

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

summary {
  cursor: pointer;
  padding: 18px 20px;
  color: var(--navy);
  font-weight: 900;
}

details p {
  margin: 0;
  padding: 0 20px 20px;
  color: var(--muted);
}

.faq-category {
  margin: 36px 0 16px;
  color: var(--navy);
  font-size: 22px;
}

.final-cta {
  padding: clamp(56px, 8vw, 96px) clamp(18px, 5vw, 72px);
  background:
    radial-gradient(circle at 82% 12%, rgba(74, 172, 239, 0.26), transparent 34%),
    linear-gradient(135deg, var(--deep), var(--navy));
  color: var(--white);
}

.final-cta-inner {
  max-width: 1220px;
  margin: 0 auto;
}

.final-cta h2 {
  margin: 0;
  max-width: 820px;
  font-size: clamp(30px, 4.8vw, 58px);
  line-height: 1.14;
}

.final-cta p {
  max-width: 760px;
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 17px;
}

.link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.link-list a {
  padding: 9px 14px;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.92);
  font-weight: 800;
}

.mini-note {
  color: var(--muted);
  font-size: 13px;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

@media (max-width: 980px) {
  .hero-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .visual-stage {
    min-height: 390px;
  }

  .side-panel {
    right: 6%;
    bottom: 12px;
  }

  .grid,
  .grid.two,
  .grid.four {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .brand img {
    width: 34px;
    height: 34px;
  }

  .nav {
    justify-content: flex-start;
    gap: 12px;
    font-size: 13px;
  }

  .hero {
    min-height: auto;
  }

  .hero-grid {
    gap: 32px;
  }

  .visual-stage {
    min-height: 360px;
  }

  .phone {
    width: min(296px, 92vw);
  }

  .phone-screen {
    min-height: 405px;
  }

  .mock-category-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
  }

  .mock-product {
    height: 86px;
  }

  .side-panel {
    display: none;
  }

  .grid,
  .grid.two,
  .grid.four,
  .board-body,
  .board-stat-row {
    grid-template-columns: 1fr;
  }

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

  .table-wrap {
    overflow-x: auto;
  }

  .table {
    min-width: 660px;
  }
}