:root {
  --bg: #f6f8fb;
  --paper: #ffffff;
  --ink: #101419;
  --muted: #5d6773;
  --soft: #e9edf3;
  --line: rgba(16, 20, 25, 0.12);
  --accent: #1f5eff;
  --accent-dark: #153fb0;
  --warm: #d8b56d;
  --max: 1120px;
  --radius: 8px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(31, 94, 255, 0.055), transparent 420px),
    var(--bg);
  font-family: Inter, "Noto Sans TC", "Microsoft JhengHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

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

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

.shell {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 10px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 62px;
  margin-top: 10px;
  padding: 10px 10px 10px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 50px rgba(16, 20, 25, 0.08);
  backdrop-filter: blur(16px);
}

.brand {
  font-size: 15px;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 20px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: transparent;
  color: var(--ink);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.01em;
}

.btn.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.btn:hover,
.card-link:hover .open {
  border-color: var(--accent-dark);
  background: var(--accent-dark);
  color: #fff;
}

.hero {
  display: grid;
  gap: 34px;
  padding: 70px 0 54px;
}

.hero-grid {
  display: grid;
  gap: 30px;
}

.eyebrow,
.kicker {
  margin: 0 0 12px;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 950px;
  margin-bottom: 0;
  font-size: clamp(44px, 13vw, 94px);
  line-height: 0.96;
  letter-spacing: -0.01em;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(32px, 8vw, 58px);
  line-height: 1.02;
  letter-spacing: -0.01em;
}

h3 {
  margin-bottom: 0;
  font-size: 22px;
  line-height: 1.18;
}

.lead {
  max-width: 720px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 4.5vw, 22px);
  line-height: 1.8;
}

.copy {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

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

.trust-panel {
  display: grid;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.trust-stat {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f9fbff;
}

.trust-stat strong {
  display: block;
  font-size: 28px;
  line-height: 1;
}

.trust-stat span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.section {
  padding: 58px 0;
}

.section-head {
  display: grid;
  gap: 14px;
  margin-bottom: 24px;
}

.section-head .copy {
  max-width: 620px;
}

.grid {
  display: grid;
  gap: 14px;
}

.price-grid {
  display: grid;
  gap: 14px;
}

.price-card,
.step-card,
.proof-card,
.company-card,
.demo-card,
.style-card,
.ask-box,
.cta-band {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.price-card {
  display: flex;
  min-height: 360px;
  flex-direction: column;
  gap: 22px;
  padding: 24px;
}

.price-card.featured {
  border: 2px solid var(--accent);
  box-shadow: 0 24px 60px rgba(31, 94, 255, 0.12);
}

.price-top {
  display: grid;
  gap: 8px;
}

.price {
  font-size: 30px;
  font-weight: 950;
  color: var(--accent);
}

.price-card ul,
.step-list {
  margin: 0;
  padding-left: 1.1em;
}

.price-card li,
.step-list li {
  margin: 9px 0;
  color: var(--muted);
}

.badge {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border: 1px solid rgba(31, 94, 255, 0.25);
  border-radius: 999px;
  background: rgba(31, 94, 255, 0.07);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 900;
}

.steps {
  display: grid;
  gap: 14px;
  counter-reset: step;
}

.step-card {
  min-height: 230px;
  padding: 22px;
}

.step-card::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  margin-bottom: 26px;
  color: var(--accent);
  font-weight: 950;
}

.ask-box {
  margin-top: 14px;
  padding: 24px;
  background: #101419;
  color: #fff;
}

.ask-box p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.8);
}

.entry-strip {
  display: grid;
  gap: 18px;
  align-items: center;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, #fff, #eef3ff);
}

.proof-grid,
.company-grid {
  display: grid;
  gap: 14px;
}

.proof-card,
.company-card {
  padding: 24px;
}

.proof-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
}

.footer {
  padding: 36px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.footer-inner {
  display: grid;
  gap: 10px;
}

.demo-hero {
  padding: 66px 0 36px;
}

.honesty {
  max-width: 860px;
  margin: 20px 0 0;
  padding: 16px 18px;
  border-left: 4px solid var(--accent);
  background: var(--paper);
  color: var(--muted);
}

.demo-grid,
.quality-grid {
  display: grid;
  gap: 16px;
}

.style-grid {
  display: grid;
  gap: 14px;
}

.demo-card,
.style-card {
  overflow: hidden;
}

.card-link {
  display: flex;
  min-height: 100%;
  flex-direction: column;
}

.thumb {
  display: grid;
  min-height: 190px;
  place-items: center;
  border-bottom: 1px solid var(--line);
  background: #eef1f6;
}

.thumb img {
  width: 100%;
  height: auto;
}

.style-card .thumb {
  align-items: start;
  min-height: 0;
  padding: 10px;
}

.style-card .thumb img {
  border: 1px solid var(--line);
  border-radius: 4px;
}

.card-body {
  display: grid;
  gap: 10px;
  padding: 18px;
}

.open {
  display: inline-flex;
  width: fit-content;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  margin-top: 8px;
  padding: 0 12px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 900;
}

.cta-band {
  display: grid;
  gap: 18px;
  padding: 28px;
  background: #101419;
  color: #fff;
}

.cta-band .copy {
  color: rgba(255, 255, 255, 0.78);
}

@media (min-width: 760px) {
  .shell {
    width: min(var(--max), calc(100% - 56px));
  }

  .nav-links {
    display: flex;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
    align-items: end;
  }

  .trust-panel {
    grid-template-columns: 1fr 1fr;
  }

  .section {
    padding: 78px 0;
  }

  .section-head {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
    align-items: end;
  }

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

  .steps .step-card:nth-child(4),
  .steps .step-card:nth-child(5) {
    min-height: 250px;
  }

  .entry-strip,
  .proof-grid,
  .company-grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.6fr);
  }

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

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

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

  .footer-inner {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .hero {
    padding-top: 92px;
  }

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