:root {
  --bg: #f6f8fb;
  --card: #ffffff;
  --ink: #10233f;
  --muted: #637188;
  --line: #dde5ef;
  --blue: #155eef;
  --cyan: #088ab2;
  --green: #087443;
  --orange: #c05621;
  --red: #b42318;
  --navy: #071f3b;
  --shadow: 0 22px 58px rgba(16, 35, 63, .11);
  --radius: 24px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 4% 0%, rgba(21, 94, 239, .12), transparent 28rem),
    radial-gradient(circle at 92% 6%, rgba(8, 138, 178, .13), transparent 24rem),
    linear-gradient(180deg, #fbfdff 0%, var(--bg) 42%, #eef3f8 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.65;
}

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

.shell {
  width: min(1280px, calc(100% - 48px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(221, 229, 239, .78);
  background: rgba(246, 248, 251, .9);
  backdrop-filter: blur(16px);
}

.topbar-inner {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--navy);
  font-weight: 850;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  color: white;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  box-shadow: 0 10px 22px rgba(21, 94, 239, .23);
  font-size: 13px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 7px;
  overflow-x: auto;
  color: var(--muted);
  font-size: 14px;
  font-weight: 720;
  scrollbar-width: none;
}

.nav::-webkit-scrollbar { display: none; }

.nav a {
  flex: 0 0 auto;
  padding: 8px 11px;
  border-radius: 10px;
}

.nav a:hover,
.nav a.active {
  color: var(--blue);
  background: #eaf1ff;
}

.hero {
  padding: 70px 0 42px;
}

.deck-hero {
  padding: 76px 0 56px;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) 360px;
  gap: 40px;
  align-items: center;
}

.hero-copy {
  min-width: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  color: var(--blue);
  border: 1px solid #cfe0ff;
  border-radius: 999px;
  background: #edf4ff;
  font-size: 13px;
  font-weight: 850;
  letter-spacing: .04em;
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue);
}

h1 {
  max-width: 1060px;
  margin: 24px 0 18px;
  color: var(--navy);
  font-size: clamp(38px, 4.6vw, 62px);
  line-height: 1.16;
  letter-spacing: -.04em;
  text-wrap: balance;
}

.lead {
  max-width: 980px;
  margin: 0;
  color: #40506a;
  font-size: clamp(17px, 1.7vw, 21px);
  line-height: 1.78;
}

.hero-panel {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.86);
  box-shadow: var(--shadow);
}

.hero-panel h2 {
  margin: 0 0 12px;
  color: var(--navy);
  font-size: 24px;
  line-height: 1.32;
  letter-spacing: -.02em;
}

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

.deck-summary {
  padding: 28px;
  border: 1px solid rgba(21, 94, 239, .15);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.96), rgba(245,249,255,.92)),
    #fff;
  box-shadow: var(--shadow);
}

.deck-summary h2 {
  margin: 0 0 12px;
  color: var(--navy);
  font-size: 26px;
  line-height: 1.26;
  letter-spacing: -.03em;
}

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

.kpi-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 22px;
}

.kpi-row div {
  padding: 14px 10px;
  border: 1px solid #dce7f5;
  border-radius: 16px;
  background: #fff;
  text-align: center;
}

.kpi-row strong {
  display: block;
  color: var(--blue);
  font-size: 30px;
  line-height: 1;
}

.kpi-row span {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.hero-points {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.hero-point {
  padding: 13px 14px;
  border: 1px solid #dfe8f2;
  border-radius: 14px;
  background: #f8fbff;
}

.hero-point strong {
  display: block;
  color: var(--navy);
  font-size: 15px;
}

.hero-point span {
  color: var(--muted);
  font-size: 13px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 16px;
  border: 1px solid #cfe0ff;
  border-radius: 999px;
  background: #fff;
  color: var(--blue);
  font-weight: 850;
  box-shadow: 0 8px 20px rgba(16,35,63,.06);
}

.btn.primary {
  color: white;
  border-color: var(--blue);
  background: linear-gradient(135deg, var(--blue), var(--cyan));
}

section { padding: 46px 0; }

.deck-section {
  padding: 42px 0;
}

.deck-title {
  max-width: 760px;
  margin-bottom: 22px;
}

.deck-title h2,
.solution-strip h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.16;
  letter-spacing: -.04em;
  text-wrap: balance;
}

.deck-grid {
  display: grid;
  gap: 16px;
}

.deck-grid.two { grid-template-columns: repeat(2, 1fr); }
.deck-grid.three { grid-template-columns: repeat(3, 1fr); }

.deck-card {
  display: block;
  min-height: 230px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(255,255,255,.9);
  box-shadow: 0 14px 36px rgba(16,35,63,.07);
}

.deck-card span {
  display: inline-flex;
  margin-bottom: 28px;
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--blue);
  background: #eaf1ff;
  font-size: 12px;
  font-weight: 900;
}

.deck-card h3 {
  max-width: 420px;
  margin: 0 0 12px;
  color: var(--navy);
  font-size: clamp(22px, 2.2vw, 30px);
  line-height: 1.2;
  letter-spacing: -.035em;
  text-wrap: balance;
}

.deck-card p {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.72;
}

.deck-card.feature {
  color: white;
  border: 0;
  background: linear-gradient(135deg, #071f3b, #155eef 64%, #088ab2);
  box-shadow: var(--shadow);
}

.deck-card.green-feature {
  background: linear-gradient(135deg, #064e3b, #0a8f73);
}

.deck-card.feature span {
  color: white;
  background: rgba(255,255,255,.16);
}

.deck-card.feature h3,
.deck-card.feature p {
  color: white;
}

.deck-card.feature p {
  color: rgba(255,255,255,.84);
}

.solution-strip {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(280px, .55fr);
  gap: 28px;
  align-items: end;
  padding: 34px;
  border: 1px solid rgba(21, 94, 239, .18);
  border-radius: 30px;
  background: linear-gradient(135deg, #ffffff, #eef5ff);
  box-shadow: var(--shadow);
}

.solution-strip p {
  margin: 0;
  color: #40506a;
  font-size: 18px;
  line-height: 1.72;
}

.pill-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.pill-grid article {
  padding: 18px;
  border: 1px solid #dbe6f1;
  border-radius: 20px;
  background: #fff;
}

.pill-grid strong {
  display: block;
  color: var(--navy);
  font-size: 20px;
  line-height: 1.2;
}

.pill-grid span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.simple-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.simple-flow article {
  position: relative;
  min-height: 210px;
  padding: 24px;
  border: 1px solid #dbe6f1;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(16,35,63,.06);
}

.simple-flow article::after {
  content: "→";
  position: absolute;
  right: -13px;
  top: 44px;
  z-index: 1;
  color: var(--blue);
  font-size: 20px;
  font-weight: 900;
}

.simple-flow article:last-child::after {
  display: none;
}

.simple-flow strong {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 13px;
  color: white;
  background: var(--blue);
  font-size: 14px;
}

.simple-flow h3 {
  margin: 24px 0 10px;
  color: var(--navy);
  font-size: 22px;
  line-height: 1.25;
}

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

.center-action {
  display: flex;
  justify-content: center;
  margin-top: 22px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  align-items: end;
  margin-bottom: 22px;
}

.section-number {
  display: block;
  margin-bottom: 9px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .06em;
}

.section-head h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.16;
  letter-spacing: -.04em;
}

.section-head p {
  max-width: 440px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.grid-2,
.grid-3,
.grid-4,
.grid-5 {
  display: grid;
  gap: 16px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

.card {
  position: relative;
  overflow: hidden;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: 0 12px 34px rgba(16,35,63,.06);
}

.card.dark {
  color: white;
  border: 0;
  background: linear-gradient(135deg, #071f3b, #155eef 62%, #088ab2);
  box-shadow: var(--shadow);
}

.card.green {
  color: white;
  border: 0;
  background: linear-gradient(135deg, #064e3b, #0a8f73);
}

.card.orange {
  color: white;
  border: 0;
  background: linear-gradient(135deg, #5b2b11, #c05621);
}

.card h3 {
  margin: 0 0 9px;
  color: var(--navy);
  font-size: 22px;
  line-height: 1.32;
}

.card.dark h3,
.card.green h3,
.card.orange h3 { color: white; }

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

.card.dark p,
.card.green p,
.card.orange p { color: rgba(255,255,255,.82); }

.tag {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 5px 9px;
  border-radius: 999px;
  color: var(--blue);
  background: #eaf1ff;
  font-size: 12px;
  font-weight: 900;
}

.dark .tag,
.green .tag,
.orange .tag {
  color: white;
  background: rgba(255,255,255,.16);
}

.flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.flow-step {
  position: relative;
  min-height: 138px;
  padding: 18px;
  border: 1px solid #dbe6f1;
  border-radius: 18px;
  background: linear-gradient(180deg, #fff, #f7fafc);
}

.flow-step::after {
  content: "→";
  position: absolute;
  right: -14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--blue);
  font-weight: 900;
}

.flow-step:last-child::after { display: none; }

.flow-step strong,
.num {
  display: inline-grid;
  min-width: 34px;
  height: 34px;
  padding: 0 8px;
  place-items: center;
  margin-bottom: 12px;
  border-radius: 11px;
  color: var(--blue);
  background: #eaf1ff;
  font-size: 12px;
  font-weight: 900;
}

.flow-step h3 {
  margin: 0 0 8px;
  color: var(--navy);
  font-size: 17px;
}

.flow-step p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.list {
  margin: 12px 0 0;
  padding-left: 19px;
  color: #4c5f78;
  font-size: 15px;
}

.list li { margin: 7px 0; }

.split {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 16px;
  align-items: stretch;
}

.callout {
  padding: 28px;
  border-radius: var(--radius);
  color: white;
  background: linear-gradient(135deg, #071f3b, #114d85 62%, #087443);
  box-shadow: var(--shadow);
}

.callout h2,
.callout h3 {
  margin: 0 0 12px;
  color: white;
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.25;
  letter-spacing: -.03em;
}

.callout p { margin: 0; color: rgba(255,255,255,.82); }

.footer {
  padding: 34px 0 48px;
  color: #7a8798;
  text-align: center;
  font-size: 13px;
}

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

.card,
.flow,
.callout,
.deck-card,
.solution-strip,
.simple-flow {
  animation: fadeUp .55s ease both;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 960px) {
  .topbar-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 0;
  }

  .nav {
    width: 100%;
    padding-bottom: 2px;
  }

  .section-head,
  .hero-layout,
  .split,
  .solution-strip {
    align-items: flex-start;
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .grid-5,
  .flow,
  .deck-grid.two,
  .deck-grid.three,
  .pill-grid,
  .simple-flow {
    grid-template-columns: 1fr;
  }

  .flow-step::after {
    right: 50%;
    top: auto;
    bottom: -18px;
    transform: translateX(50%) rotate(90deg);
  }

  .simple-flow article::after {
    right: 50%;
    top: auto;
    bottom: -18px;
    transform: translateX(50%) rotate(90deg);
  }
}

@media (max-width: 640px) {
  .shell { width: min(100% - 24px, 1280px); }
  .brand span:last-child { font-size: 14px; }
  .hero { padding: 48px 0 32px; }
  .deck-hero { padding: 52px 0 34px; }
  h1 {
    font-size: 34px;
    line-height: 1.2;
    letter-spacing: -.03em;
  }
  .lead { font-size: 17px; }
  section { padding: 36px 0; }
  .btn { width: 100%; }
  .card,
  .callout,
  .flow,
  .deck-card,
  .deck-summary,
  .solution-strip { padding: 20px; }
  .deck-card { min-height: auto; }
  .simple-flow article { min-height: auto; }
  .kpi-row { grid-template-columns: 1fr; }
  .center-action .btn { width: 100%; }
}