:root {
  --bg: #07101b;
  --bg-deep: #030812;
  --panel: rgba(11, 23, 39, 0.82);
  --panel-strong: rgba(8, 19, 34, 0.95);
  --line: rgba(111, 237, 255, 0.14);
  --text: #eef7ff;
  --muted: #9bb0c9;
  --cyan: #6ff0ff;
  --blue: #4f82ff;
  --green: #84ffb3;
  --pink: #ff6fa4;
  --yellow: #ffd56d;
  --shadow: 0 24px 72px rgba(0, 0, 0, 0.34);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max-width: 1220px;
  --display: "Segoe UI", "Noto Sans TC", sans-serif;
  --body: "Microsoft JhengHei", "PingFang TC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: var(--body);
  background:
    radial-gradient(circle at 10% 0%, rgba(79, 130, 255, 0.22), transparent 26%),
    radial-gradient(circle at 92% 12%, rgba(111, 240, 255, 0.16), transparent 22%),
    radial-gradient(circle at 55% 110%, rgba(255, 111, 164, 0.14), transparent 28%),
    linear-gradient(180deg, var(--bg-deep) 0%, var(--bg) 45%, #08121f 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(255, 255, 255, 0.42), transparent 80%);
  opacity: 0.32;
}

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

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

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

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: rgba(3, 8, 18, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand__mark {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--cyan), var(--blue) 58%, var(--pink));
  box-shadow: 0 10px 28px rgba(79, 130, 255, 0.34);
}

.nav__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav__links a {
  padding: 6px 0;
}

.nav__links a:hover,
.nav__links a.is-active {
  color: var(--text);
}

.page-hero {
  padding: 50px 0 24px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) 380px;
  gap: 22px;
}

.hero-card,
.side-card,
.panel,
.list-card,
.cta-band,
.brief-frame,
.faq-card,
.idea-card,
.case-card {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-card,
.side-card,
.panel,
.list-card,
.brief-frame,
.faq-card,
.idea-card,
.case-card {
  border-radius: var(--radius-lg);
}

.hero-card,
.side-card {
  position: relative;
  overflow: hidden;
  padding: 34px;
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: auto -10% -45% 35%;
  height: 320px;
  background: radial-gradient(circle, rgba(111, 240, 255, 0.2), transparent 65%);
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(111, 240, 255, 0.08);
  border: 1px solid rgba(111, 240, 255, 0.14);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--display);
  line-height: 1.12;
}

h1 {
  margin-top: 16px;
  font-size: clamp(2.5rem, 6vw, 4.9rem);
  letter-spacing: -0.05em;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  letter-spacing: -0.03em;
}

.lead {
  margin: 18px 0 0;
  color: #cbdaef;
  font-size: 1.05rem;
  line-height: 1.9;
}

.hero-quote,
.note-box,
.mini-card,
.metric-card {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-quote {
  margin: 18px 0 24px;
  padding: 18px 20px;
  border-radius: 18px;
  line-height: 1.85;
  color: #d7e4f8;
}

.btn-row,
.chip-row,
.footer-links,
.info-grid,
.metrics,
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 14px 18px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: 0.22s ease;
}

.btn--primary {
  color: #04101d;
  background: linear-gradient(135deg, var(--cyan), #8dd4ff 58%, var(--blue));
  box-shadow: 0 16px 34px rgba(111, 240, 255, 0.22);
}

.btn--ghost {
  color: var(--text);
  background: rgba(255, 255, 255, 0.035);
  border-color: rgba(255, 255, 255, 0.08);
}

.btn:hover,
.chip:hover,
.chip.is-active {
  transform: translateY(-2px);
  border-color: rgba(111, 240, 255, 0.35);
}

main section {
  padding: 28px 0;
}

.section-head {
  display: grid;
  gap: 10px;
  margin-bottom: 22px;
}

.section-head p,
.side-card p,
.panel p,
.list-card p,
.faq-card p,
.idea-card p,
.case-card p,
.mini-card p,
.metric-card p,
.hero-card p {
  margin: 0;
  color: #d1def1;
  line-height: 1.8;
}

.section-head p {
  max-width: 860px;
  color: var(--muted);
}

.panel,
.list-card,
.faq-card,
.idea-card,
.case-card {
  padding: 24px;
}

.grid-2,
.grid-3,
.grid-4,
.grid-5 {
  display: grid;
  gap: 18px;
}

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

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

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

.grid-5 {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.mini-card,
.metric-card {
  border-radius: 18px;
  padding: 18px;
}

.mini-card strong,
.metric-card strong,
.case-card strong,
.idea-card strong {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
}

.note-box {
  padding: 20px;
  border-radius: 20px;
}

.note-box ul,
.list-card ul,
.list-card ol,
.panel ul,
.panel ol {
  margin: 0;
  padding-left: 1.2rem;
  color: #d3e0f2;
  line-height: 1.8;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.step-card {
  position: relative;
  padding: 20px 18px 18px 58px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.step-card::before {
  content: attr(data-step);
  position: absolute;
  left: 18px;
  top: 16px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: #03101d;
  font-weight: 800;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.timeline-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.timeline-item strong {
  color: var(--cyan);
}

.brief-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.brief-frame {
  overflow: hidden;
}

iframe {
  width: 100%;
  height: 760px;
  border: 0;
  background: #0a1424;
}

.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 14px;
  border-radius: 999px;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text);
  transition: 0.2s ease;
}

.filters {
  margin-bottom: 18px;
}

.idea-grid,
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.idea-card__meta,
.case-card__meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.source-link {
  color: var(--cyan);
  font-weight: 700;
}

.contact-board {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 28px;
}

.contact-form {
  display: grid;
  gap: 18px;
}

.contact-form__field {
  display: grid;
  gap: 10px;
}

.contact-form__field span {
  font-weight: 700;
  color: var(--text);
}

.contact-form__field input,
.contact-form__field textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  padding: 14px 16px;
  font: inherit;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-form__field input:focus,
.contact-form__field textarea:focus {
  border-color: rgba(111, 240, 255, 0.45);
  box-shadow: 0 0 0 4px rgba(111, 240, 255, 0.12);
}

.contact-form__field textarea {
  resize: vertical;
  min-height: 160px;
}

.contact-form__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.contact-form__hint {
  color: var(--muted);
}

.contact-form__status {
  min-height: 28px;
  margin: 0;
  font-weight: 700;
  color: var(--green);
}

.contact-form__status.is-error {
  color: #ff9aa8;
}

.contact-form__hidden {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.cta-band {
  border-radius: var(--radius-xl);
  padding: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.footer {
  padding: 36px 0 52px;
  color: var(--muted);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
}

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

@media (max-width: 1120px) {
  .hero-grid,
  .grid-2,
  .grid-3,
  .grid-4,
  .grid-5,
  .idea-grid,
  .case-grid,
  .step-grid {
    grid-template-columns: 1fr;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }

  .cta-band {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 760px) {
  .nav__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-card,
  .side-card,
  .panel,
  .list-card,
  .faq-card,
  .idea-card,
  .case-card,
  .cta-band {
    padding: 20px;
  }

  iframe {
    height: 520px;
  }
}