:root {
  color-scheme: light dark;
  --bg: #f7f1e6;
  --bg-strong: #fffaf2;
  --surface: rgba(255, 250, 242, 0.78);
  --surface-strong: rgba(255, 247, 236, 0.92);
  --line: rgba(67, 53, 34, 0.12);
  --ink: #16120d;
  --muted: #65594a;
  --accent: #ec6b2d;
  --accent-2: #0f8b83;
  --accent-3: #ffc857;
  --shadow: 0 24px 80px rgba(51, 37, 20, 0.14);
  --max: 1180px;
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --font-sans: "Manrope", "Noto Sans SC", "Noto Sans TC", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111311;
    --bg-strong: #181b18;
    --surface: rgba(24, 27, 24, 0.8);
    --surface-strong: rgba(28, 31, 28, 0.92);
    --line: rgba(236, 224, 206, 0.1);
    --ink: #f6f0e7;
    --muted: #b8af9e;
    --accent: #ff8e58;
    --accent-2: #4ed0c6;
    --accent-3: #f9d977;
    --shadow: 0 24px 90px rgba(0, 0, 0, 0.38);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-sans);
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 20%, rgba(236, 107, 45, 0.18), transparent 25%),
    radial-gradient(circle at 85% 18%, rgba(15, 139, 131, 0.2), transparent 28%),
    radial-gradient(circle at 50% 100%, rgba(255, 200, 87, 0.13), transparent 35%),
    linear-gradient(180deg, var(--bg-strong), var(--bg));
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.48), transparent 85%);
  opacity: 0.18;
}

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

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(247, 241, 230, 0.7);
  border-bottom: 1px solid var(--line);
}

@media (prefers-color-scheme: dark) {
  .site-header {
    background: rgba(17, 19, 17, 0.74);
  }
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: fit-content;
}

.brand-mark {
  width: 42px;
  height: 42px;
  padding: 5px;
  border-radius: 14px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.35));
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
}

.brand-logo {
  width: 100%;
  height: 100%;
  border-radius: 10px;
}

.brand-name {
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 1.12rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: center;
}

.nav-link {
  color: var(--muted);
  font-weight: 700;
  font-size: 0.96rem;
}

.nav-link:hover {
  color: var(--ink);
}

.nav-link-cta {
  color: var(--ink);
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.nav-link-active {
  color: var(--ink);
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.language-control {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.language-select {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 999px;
  padding: 10px 14px;
  font: inherit;
}

.hero-block {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  align-items: center;
  gap: 52px;
  padding: 72px 0 44px;
}

.hero-kicker,
.section-kicker,
.wide-card-label,
.panel-label,
.screen-label,
.float-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.hero-title,
.section-title,
.cta-banner h2 {
  margin: 14px 0 0;
  font-size: clamp(2.8rem, 5vw, 5.2rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
  font-weight: 800;
}

.section-title,
.cta-banner h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
}

.hero-subtitle,
.section-subtitle,
.cta-banner p {
  margin: 18px 0 0;
  max-width: 640px;
  font-size: 1.08rem;
  line-height: 1.75;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.98rem;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.btn-primary {
  color: white;
  background: linear-gradient(135deg, var(--accent), #ff9455);
  box-shadow: 0 18px 40px rgba(236, 107, 45, 0.24);
}

.btn-secondary {
  border: 1px solid var(--line);
  background: var(--surface);
}

.btn-primary:hover,
.btn-secondary:hover,
.feature-card:hover,
.wide-card:hover,
.flow-card:hover,
.compare-card:hover,
.faq-item:hover {
  transform: translateY(-2px);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.trust-pill {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.36);
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.hero-visual {
  position: relative;
  min-height: 660px;
}

.float-card {
  position: absolute;
  z-index: 2;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface-strong);
  box-shadow: var(--shadow);
  animation: bob 6s ease-in-out infinite;
}

.float-card-top {
  top: 24px;
  right: 26px;
}

.float-card-middle {
  top: 250px;
  left: -18px;
  animation-delay: 1.2s;
}

.float-card-bottom {
  bottom: 58px;
  right: -8px;
  animation-delay: 2.3s;
}

.device-frame {
  position: absolute;
  inset: 62px 54px 0;
  padding: 18px;
  border-radius: 42px;
  background: linear-gradient(160deg, rgba(37, 39, 37, 0.96), rgba(65, 68, 65, 0.88));
  box-shadow: 0 36px 90px rgba(0, 0, 0, 0.28);
  animation: float-device 7s ease-in-out infinite;
}

.device-notch {
  width: 38%;
  height: 28px;
  margin: 0 auto 10px;
  border-radius: 0 0 22px 22px;
  background: rgba(0, 0, 0, 0.62);
}

.device-screen {
  height: calc(100% - 38px);
  padding: 22px 20px 20px;
  border-radius: 30px;
  background:
    radial-gradient(circle at 100% 0%, rgba(78, 208, 198, 0.14), transparent 28%),
    radial-gradient(circle at 0% 100%, rgba(255, 200, 87, 0.12), transparent 24%),
    linear-gradient(180deg, rgba(250, 244, 236, 0.96), rgba(245, 236, 224, 0.92));
  color: #17130f;
}

.screen-header,
.history-row,
.tool-grid {
  display: flex;
  align-items: center;
}

.screen-header {
  justify-content: space-between;
  gap: 16px;
}

.screen-title {
  margin: 6px 0 0;
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: -0.05em;
}

.screen-icon {
  width: 54px;
  height: 54px;
  padding: 6px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 12px 26px rgba(20, 17, 12, 0.12);
}

.history-list {
  margin-top: 22px;
  display: grid;
  gap: 10px;
}

.history-row {
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.62);
  color: #5d544a;
  font-weight: 700;
}

.history-row strong,
.tool-panel strong {
  color: #18130f;
}

.preview-panel,
.tool-panel,
.feature-card,
.wide-card,
.flow-card,
.compare-card,
.faq-item,
.cta-banner {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.preview-panel {
  margin-top: 18px;
  padding: 18px;
}

.panel-number {
  display: block;
  margin-top: 8px;
  font-size: 2rem;
  line-height: 1;
  letter-spacing: -0.04em;
}

.panel-note {
  margin: 10px 0 0;
  color: #64584a;
  font-size: 0.94rem;
  line-height: 1.6;
}

.tool-grid {
  align-items: stretch;
  gap: 12px;
  margin-top: 14px;
}

.tool-panel {
  flex: 1;
  padding: 16px;
}

.tool-panel-accent {
  background: linear-gradient(180deg, rgba(15, 139, 131, 0.12), rgba(255, 255, 255, 0.72));
}

.section-block {
  padding: 56px 0;
}

.section-copy {
  max-width: 760px;
  margin-bottom: 28px;
}

.feature-grid,
.flow-grid,
.compare-grid {
  display: grid;
  gap: 18px;
}

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

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

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

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

.feature-card,
.wide-card,
.flow-card,
.compare-card {
  padding: 22px;
}

.feature-card h3,
.wide-card h3,
.flow-card h3,
.compare-label,
.faq-item summary {
  margin: 0;
  font-size: 1.18rem;
  line-height: 1.25;
  letter-spacing: -0.03em;
}

.feature-card p,
.wide-card p,
.flow-card p,
.compare-card li,
.faq-item p {
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.75;
}

.flow-card {
  position: relative;
  padding-top: 58px;
}

.step-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--accent-2);
  color: white;
  font-size: 0.86rem;
  font-weight: 800;
}

.compare-card ul {
  margin: 16px 0 0;
  padding-left: 18px;
}

.compare-card-highlight {
  background: linear-gradient(180deg, rgba(15, 139, 131, 0.12), var(--surface));
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  padding: 20px 22px;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item p {
  margin: 12px 0 0;
}

.site-footer {
  margin: 0 auto 44px;
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--surface);
}

.site-footer-links {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.site-footer-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.25);
  color: var(--ink);
  font-weight: 700;
}

.site-footer-note {
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.policy-shell {
  padding: 72px 0 44px;
}

.policy-card {
  padding: 28px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--line);
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.policy-card h1 {
  margin: 16px 0 0;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.policy-card h2 {
  margin: 28px 0 12px;
  font-size: 1.32rem;
}

.policy-card p,
.policy-card li {
  color: var(--muted);
  line-height: 1.8;
}

.policy-card ul {
  padding-left: 20px;
}

.policy-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.resource-shell {
  padding: 56px 0 22px;
}

.resource-hero {
  padding-bottom: 18px;
}

body.resource-page .resource-nav .nav-link {
  flex: 0 0 auto;
  white-space: nowrap;
}

.resource-updated {
  margin: 18px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  padding: 14px 0 32px;
}

.resource-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}

.resource-card h2 {
  margin: 0;
  font-size: 1.26rem;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.resource-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.resource-list li {
  display: grid;
  gap: 6px;
  color: var(--muted);
  line-height: 1.75;
}

.resource-list strong {
  color: var(--ink);
}

.cta-banner {
  padding: 30px;
  margin: 24px auto 72px;
  background:
    radial-gradient(circle at 0% 0%, rgba(236, 107, 45, 0.12), transparent 30%),
    radial-gradient(circle at 100% 100%, rgba(15, 139, 131, 0.16), transparent 36%),
    var(--surface-strong);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes float-device {
  0%, 100% { transform: translateY(0) rotate(0.4deg); }
  50% { transform: translateY(-10px) rotate(-0.6deg); }
}

@media (max-width: 1100px) {
  .hero-block,
  .feature-grid,
  .tool-card-grid,
  .flow-grid,
  .resource-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-visual {
    min-height: 620px;
  }

  .device-frame {
    inset: 52px 18px 0;
  }
}

@media (max-width: 780px) {
  .site-header-inner,
  .site-nav {
    flex-direction: column;
  }

  body.resource-page .site-header-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px 12px;
    padding: 12px 0 8px;
  }

  body.resource-page .brand-link {
    min-width: 0;
  }

  body.resource-page .brand-name {
    font-size: 1rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  body.resource-page .language-control {
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
    align-self: center;
    gap: 0;
  }

  body.resource-page .language-label {
    display: none;
  }

  body.resource-page .language-select {
    max-width: 132px;
    padding: 8px 12px;
  }

  body.resource-page .resource-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 10px;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 2px 0 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  body.resource-page .resource-nav::-webkit-scrollbar {
    display: none;
  }

  body.resource-page .resource-nav [data-nav-link="site"] {
    display: none;
  }

  body.resource-page .resource-nav .nav-link {
    padding: 9px 13px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.28);
  }

  body.resource-page .resource-nav .nav-link-active {
    background: var(--surface);
  }

  body.resource-page .resource-shell {
    padding-top: 28px;
  }

  .hero-block,
  .feature-grid,
  .tool-card-grid,
  .flow-grid,
  .compare-grid,
  .resource-grid {
    grid-template-columns: 1fr;
  }

  .hero-block {
    gap: 26px;
    padding-top: 36px;
  }

  .hero-visual {
    min-height: 560px;
  }

  .device-frame {
    inset: 44px 0 0;
  }

  .float-card-middle {
    left: 0;
  }

  .float-card-bottom {
    right: 8px;
  }
}

@media (max-width: 560px) {
  .shell {
    width: min(calc(100% - 20px), var(--max));
  }

  .hero-title {
    font-size: 2.6rem;
  }

  .site-footer-links a {
    width: 100%;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  .tool-grid {
    flex-direction: column;
  }

  .device-frame {
    padding: 14px;
  }

  .device-screen {
    padding: 18px 14px 14px;
  }

  .screen-title {
    font-size: 1.28rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}