:root {
  --ink: #182230;
  --muted: #5d6978;
  --line: #d9e1ea;
  --paper: #ffffff;
  --soft: #f4f7fb;
  --teal: #0f766e;
  --blue: #245d91;
  --rose: #b54a5a;
  --gold: #96721b;
  --shadow: 0 18px 42px rgba(28, 42, 58, .16);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
  line-height: 1.62;
}

img {
  display: block;
  width: 100%;
  height: auto;
}

a { color: inherit; }

.wrap {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255,255,255,.18);
  background: rgba(20, 30, 42, .92);
  color: #fff;
  backdrop-filter: blur(14px);
}

.nav {
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand,
.nav-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  text-decoration: none;
  font-weight: 850;
  white-space: nowrap;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: 6px;
  background: #fff;
  color: var(--teal);
  font-size: .86rem;
  font-weight: 900;
}

.nav-links {
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 6px;
}

.nav-links a,
.button {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  padding: 0 13px;
  text-decoration: none;
  font-weight: 760;
  line-height: 1.2;
}

.nav-links a {
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.07);
}

.hero {
  min-height: 74vh;
  display: flex;
  align-items: center;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(10, 18, 28, .90), rgba(10, 18, 28, .70) 44%, rgba(10, 18, 28, .36)),
    var(--hero-image) center right / var(--hero-size, cover) no-repeat;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .96fr) minmax(320px, .64fr);
  gap: 34px;
  align-items: center;
  padding: 82px 0 60px;
}

.hero-copy {
  max-width: 820px;
}

.eyebrow {
  margin: 0 0 12px;
  color: #9ddfd5;
  font-weight: 850;
  letter-spacing: 0;
}

.eyebrow.dark {
  color: var(--teal);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.13;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
}

h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

h3 {
  font-size: 1.12rem;
}

p {
  margin: 9px 0;
}

.lead {
  max-width: 760px;
  margin-top: 18px;
  color: rgba(255,255,255,.88);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
}

.button.primary {
  border-color: var(--teal);
  background: var(--teal);
  color: #fff;
}

.button.light {
  border-color: #fff;
  background: #fff;
  color: var(--ink);
}

.hero-visual {
  border: 1px solid rgba(255,255,255,.24);
  border-radius: 8px;
  overflow: hidden;
  background: rgba(255,255,255,.08);
  box-shadow: var(--shadow);
}

.hero-visual img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: rgba(255,255,255,.1);
}

.visual-note {
  padding: 16px;
}

.visual-note strong,
.visual-note span {
  display: block;
}

.visual-note span {
  margin-top: 4px;
  color: rgba(255,255,255,.78);
}

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

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding: 18px 0;
}

.metric,
.feature-card,
.step,
.value-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.metric {
  min-height: 106px;
  padding: 16px;
}

.metric strong {
  display: block;
  color: var(--blue);
  font-size: 1.36rem;
}

.metric span {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: .94rem;
}

.section {
  padding: 64px 0;
  border-bottom: 1px solid var(--line);
}

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

.section-head {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 28px;
  align-items: end;
  margin-bottom: 28px;
}

.section-head p {
  color: var(--muted);
  font-size: 1.02rem;
}

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

.feature-card {
  overflow: hidden;
  box-shadow: 0 10px 28px rgba(34, 48, 68, .08);
}

.feature-card img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.feature-body {
  padding: 17px;
}

.feature-body p,
.value-card p,
.step p,
.split p {
  color: var(--muted);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.tag-row span {
  border-radius: 999px;
  padding: 4px 9px;
  background: #eef5f4;
  color: var(--teal);
  font-size: .82rem;
  font-weight: 760;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.step {
  padding: 18px;
  min-height: 190px;
}

.step span {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  margin-bottom: 16px;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  font-weight: 850;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: 34px;
  align-items: center;
}

.split > img {
  border-radius: 8px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.check-list {
  padding-left: 0;
  margin: 18px 0 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 9px 0 9px 28px;
  color: var(--muted);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 12px;
  height: 12px;
  border-radius: 4px;
  background: var(--gold);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.value-card {
  padding: 20px;
  min-height: 166px;
}

.footer {
  background: #141e2a;
  color: rgba(255,255,255,.82);
}

.footer .wrap {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer a {
  color: #fff;
}

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

  .metric-grid,
  .feature-grid,
  .step-grid,
  .value-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 0;
  }

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

  .hero {
    min-height: auto;
  }

  .hero-grid {
    padding: 54px 0 38px;
  }

  .metric-grid,
  .feature-grid,
  .step-grid,
  .value-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 46px 0;
  }
}