:root {
  --font-sans:
    "Lexend", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", ui-monospace, monospace;
  --radius-sm: 16px;
  --radius-md: 24px;
  --radius-lg: 34px;
  --radius-xl: 44px;
  --radius-pill: 999px;
  --content-max: 1180px;
  --nav-height: 84px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  line-height: 1.7;
  color: var(--text-main);
  background:
    radial-gradient(
      circle at 12% 10%,
      rgba(42, 155, 255, 0.12),
      transparent 28%
    ),
    radial-gradient(
      circle at 88% 0%,
      rgba(8, 103, 216, 0.1),
      transparent 24%
    ),
    linear-gradient(180deg, #f3f9ff 0%, var(--bg-base) 30%, #f8fbff 100%);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
}

body::before {
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.35),
      rgba(255, 255, 255, 0)
    ),
    radial-gradient(
      circle at top,
      rgba(255, 255, 255, 0.9),
      rgba(255, 255, 255, 0)
    );
}

body::after {
  inset: auto;
  width: 30rem;
  height: 30rem;
  top: 6rem;
  right: -9rem;
  border-radius: 50%;
  background: rgba(42, 155, 255, 0.12);
  filter: blur(120px);
}

body.zh {
  letter-spacing: 0;
}

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

button,
input {
  font: inherit;
}

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

main section {
  scroll-margin-top: calc(var(--nav-height) + 1.25rem);
}

.container {
  width: min(var(--content-max), calc(100% - 2rem));
  margin: 0 auto;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  padding-top: 1rem;
}

.nav-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--nav-height);
  padding: 0.95rem 1.3rem;
  border: 1px solid rgba(8, 103, 216, 0.08);
  border-radius: 30px;
  background: var(--nav-bg);
  box-shadow: 0 16px 38px rgba(19, 88, 167, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  white-space: nowrap;
  color: var(--text-strong);
  font-weight: 800;
  font-size: 1.08rem;
  letter-spacing: -0.04em;
}

.brand-mark {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.65rem;
  height: 2.65rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, #3aa7ff 0%, #0867d8 100%);
  color: #fff;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.35),
    0 16px 28px rgba(0, 102, 204, 0.18);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 0.34rem;
  border-radius: 0.72rem;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
}

.nav-links,
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.95rem;
}

.nav-links a {
  position: relative;
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 700;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.42rem;
  width: 100%;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--accent-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text-strong);
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.9rem;
  height: 2.9rem;
  border-radius: 1rem;
  border: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, 0.68);
  color: var(--text-strong);
  cursor: pointer;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 3rem;
  padding: 0.82rem 1.28rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: 0.92rem;
  font-weight: 700;
  transition:
    transform 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    color 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button--primary {
  color: #fff;
  background: var(--accent-gradient);
  box-shadow: 0 16px 30px rgba(0, 102, 204, 0.16);
}

.button--primary.button--mint {
  background: var(--green-gradient);
  box-shadow: 0 16px 30px rgba(7, 193, 96, 0.18);
}

.button--secondary {
  color: var(--accent-800);
  border-color: rgba(0, 102, 204, 0.18);
  background: rgba(255, 255, 255, 0.75);
}

.button--ghost {
  color: var(--text-muted);
  border-color: rgba(0, 102, 204, 0.1);
  background: rgba(255, 255, 255, 0.44);
}

.button[aria-current="page"] {
  color: var(--accent-800);
  border-color: rgba(0, 102, 204, 0.14);
  background: var(--accent-100);
}

.hero {
  padding: 2.4rem 0 1rem;
}

.hero-shell {
  position: relative;
  overflow: hidden;
  padding: clamp(1.2rem, 2.3vw, 1.8rem);
  border: 1px solid rgba(8, 103, 216, 0.1);
  border-radius: 40px;
  background:
    radial-gradient(
      circle at top right,
      rgba(42, 155, 255, 0.14),
      transparent 26%
    ),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(247, 251, 255, 0.94));
  box-shadow: var(--shadow-strong);
}

.hero-shell::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  border-radius: var(--radius-pill);
  background: linear-gradient(
    90deg,
    rgba(42, 155, 255, 0.95),
    rgba(8, 103, 216, 0.42),
    rgba(8, 103, 216, 0)
  );
}

.hero-shell > * {
  position: relative;
  z-index: 1;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: 1.4rem;
  align-items: start;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  width: fit-content;
  margin-bottom: 1rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid rgba(8, 103, 216, 0.12);
  border-radius: var(--radius-pill);
  background: rgba(8, 103, 216, 0.07);
  color: var(--accent-800);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.zh .eyebrow {
  letter-spacing: 0.04em;
  text-transform: none;
}

.hero-title {
  max-width: 12ch;
  margin: 0;
  color: var(--text-strong);
  font-size: clamp(2.35rem, 5vw, 4.2rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
}

.zh .hero-title {
  max-width: 10.2ch;
  font-size: clamp(2.2rem, 6.2vw, 3.85rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.hero-copy {
  max-width: 64ch;
  margin: 1.2rem 0 0;
  font-size: 1.02rem;
  color: var(--text-main);
}

.hero-copy strong {
  color: var(--text-strong);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 1.9rem 0 1.2rem;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.trust-pill,
.source-pill,
.chip,
.task-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.84rem;
  border: 1px solid rgba(0, 102, 204, 0.1);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.72);
  color: var(--text-muted);
  font-size: 0.84rem;
  font-weight: 600;
}

.trust-pill--mint,
.source-pill--mint {
  background: rgba(7, 193, 96, 0.1);
  border-color: rgba(7, 193, 96, 0.16);
  color: var(--green-900);
}

.hero-note {
  max-width: 56ch;
  margin-top: 1rem;
  color: var(--text-faint);
  font-size: 0.9rem;
}

.hero-stage {
  display: grid;
  gap: 1rem;
}

.panel,
.note-card,
.fact-card,
.story-card,
.value-card,
.task-card,
.route-card,
.signal-card,
.faq-item,
.footer-card,
.cta-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.98),
      rgba(248, 251, 255, 0.94)
    );
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
}

.panel::before,
.note-card::before,
.fact-card::before,
.story-card::before,
.value-card::before,
.task-card::before,
.route-card::before,
.signal-card::before,
.faq-item::before,
.footer-card::before,
.cta-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(
    90deg,
    rgba(42, 155, 255, 0.26),
    rgba(8, 103, 216, 0.03)
  );
}

.panel,
.cta-card,
.footer-card {
  padding: 1.35rem;
}

.panel--chat {
  padding: 1.35rem;
  background:
    radial-gradient(
      circle at top right,
      rgba(7, 193, 96, 0.08),
      transparent 36%
    ),
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.99),
      rgba(244, 250, 255, 0.92)
    );
}

.panel--result {
  padding: 1.2rem;
}

.panel-label,
.card-kicker,
.route-label,
.signal-label,
.footer-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--accent-800);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.zh .panel-label,
.zh .card-kicker,
.zh .route-label,
.zh .signal-label,
.zh .footer-kicker {
  letter-spacing: 0.04em;
  text-transform: none;
}

.chat-window {
  margin-top: 0.95rem;
  border: 1px solid rgba(0, 102, 204, 0.08);
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.78);
  overflow: hidden;
}

.chat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1rem;
  border-bottom: 1px solid rgba(0, 102, 204, 0.08);
  background: rgba(231, 243, 255, 0.55);
}

.chat-title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text-strong);
  font-size: 0.92rem;
  font-weight: 700;
}

.chat-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.8rem;
  background: var(--green-gradient);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 800;
}

.chat-time {
  color: var(--text-faint);
  font-size: 0.78rem;
  font-family: var(--font-mono);
}

.chat-body {
  display: grid;
  gap: 0.85rem;
  padding: 1rem;
}

.bubble-row {
  display: flex;
  gap: 0.65rem;
}

.bubble-row--user {
  justify-content: flex-end;
}

.bubble {
  max-width: min(26rem, 100%);
  padding: 0.92rem 1rem;
  border-radius: 22px;
  font-size: 0.92rem;
  line-height: 1.6;
}

.bubble--user {
  color: #062814;
  border-top-right-radius: 7px;
  background: linear-gradient(
    180deg,
    rgba(7, 193, 96, 0.17),
    rgba(7, 193, 96, 0.12)
  );
  border: 1px solid rgba(7, 193, 96, 0.16);
}

.bubble--assistant {
  color: var(--text-main);
  border-top-left-radius: 7px;
  background: rgba(244, 250, 255, 0.9);
  border: 1px solid rgba(0, 102, 204, 0.08);
}

.bubble-kicker {
  display: inline-flex;
  margin-bottom: 0.35rem;
  color: var(--green-900);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.result-list,
.fact-list,
.source-list,
.footer-links {
  display: grid;
  gap: 0.75rem;
}

.result-list {
  margin-top: 0.9rem;
}

.result-item {
  padding: 0.95rem 1rem;
  border: 1px solid rgba(0, 102, 204, 0.08);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.75);
}

.result-item strong {
  display: block;
  margin-bottom: 0.22rem;
  color: var(--text-strong);
  font-size: 0.94rem;
}

.result-item p {
  margin: 0;
  color: var(--text-main);
  font-size: 0.9rem;
}

.hero-side-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.note-card {
  padding: 1.15rem;
  background:
    radial-gradient(
      circle at top right,
      rgba(42, 155, 255, 0.08),
      transparent 42%
    ),
    rgba(255, 255, 255, 0.96);
}

.note-title,
.story-title,
.value-title,
.task-title,
.route-title,
.signal-title,
.footer-title {
  margin: 0.65rem 0 0.45rem;
  color: var(--text-strong);
  font-size: 1.12rem;
  line-height: 1.28;
}

.note-copy,
.story-copy,
.value-copy,
.task-copy,
.route-copy,
.signal-copy,
.footer-copy {
  margin: 0;
  color: var(--text-main);
  font-size: 0.93rem;
}

.note-tagline {
  display: block;
  margin-top: 0.8rem;
  color: var(--green-900);
  font-size: 0.82rem;
  font-weight: 700;
}

.fact-strip {
  padding: 1.15rem 0 0;
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}

.fact-card {
  padding: 1.25rem 1.2rem;
  border-radius: 28px;
  background:
    radial-gradient(
      circle at top right,
      rgba(42, 155, 255, 0.08),
      transparent 38%
    ),
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.98),
      rgba(248, 251, 255, 0.94)
    );
}

.fact-value {
  margin: 0.65rem 0 0.45rem;
  color: var(--text-strong);
  font-size: 1.16rem;
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.03em;
}

.fact-copy {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.section {
  padding: 4.9rem 0 0;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 1.4rem;
  align-items: end;
  margin-bottom: 1.6rem;
}

.section-title {
  margin: 0;
  color: var(--text-strong);
  font-size: clamp(1.9rem, 4vw, 3.15rem);
  line-height: 1.08;
  letter-spacing: -0.05em;
}

.zh .section-title {
  letter-spacing: -0.04em;
}

.section-copy {
  margin: 0;
  max-width: 68ch;
  color: var(--text-main);
  font-size: 1rem;
}

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

.story-card,
.value-card,
.route-card,
.task-card,
.signal-card {
  padding: 1.25rem;
}

.story-grid .story-card:first-child {
  background:
    radial-gradient(
      circle at top right,
      rgba(7, 193, 96, 0.08),
      transparent 36%
    ),
    rgba(255, 255, 255, 0.88);
}

.story-grid .story-card:nth-child(2) {
  background:
    radial-gradient(
      circle at top right,
      rgba(0, 153, 255, 0.08),
      transparent 36%
    ),
    rgba(255, 255, 255, 0.88);
}

.story-grid .story-card:nth-child(3) {
  background:
    radial-gradient(
      circle at top right,
      rgba(0, 102, 204, 0.08),
      transparent 36%
    ),
    rgba(255, 255, 255, 0.88);
}

.story-quote {
  display: block;
  color: var(--green-900);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.value-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
  gap: 1rem;
}

.value-main {
  padding: 1.45rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(
      circle at top left,
      rgba(0, 153, 255, 0.12),
      transparent 26%
    ),
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.98),
      rgba(244, 250, 255, 0.92)
    );
  box-shadow: var(--shadow-soft);
}

.value-main p {
  margin: 0 0 1rem;
  color: var(--text-main);
  font-size: 1rem;
}

.value-main p:last-child {
  margin-bottom: 0;
}

.value-list {
  display: grid;
  gap: 1rem;
}

.value-card {
  background: rgba(255, 255, 255, 0.86);
}

.workflow-shell {
  padding: 1.35rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(
      circle at top right,
      rgba(0, 153, 255, 0.12),
      transparent 26%
    ),
    rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-soft);
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.9rem;
}

.workflow-step {
  position: relative;
  padding: 1.05rem;
  border: 1px solid rgba(0, 102, 204, 0.09);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.78);
}

.workflow-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 1.4rem;
  right: -0.72rem;
  width: 1.35rem;
  height: 2px;
  background: linear-gradient(90deg, rgba(0, 153, 255, 0.24), transparent);
}

.workflow-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.82rem;
  background: var(--accent-gradient);
  color: #fff;
  font-size: 0.82rem;
  font-weight: 800;
}

.workflow-step h3 {
  margin: 0.85rem 0 0.35rem;
  color: var(--text-strong);
  font-size: 1rem;
}

.workflow-step p {
  margin: 0;
  color: var(--text-main);
  font-size: 0.9rem;
}

.workflow-note {
  margin-top: 1rem;
  padding: 1rem 1.05rem;
  border: 1px solid rgba(0, 102, 204, 0.09);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.8);
  color: var(--text-main);
  font-size: 0.92rem;
}

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

.route-list {
  display: grid;
  gap: 0.7rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.route-list li {
  position: relative;
  padding-left: 1rem;
  color: var(--text-main);
  font-size: 0.92rem;
}

.route-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--accent-600);
}

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

.task-prompt {
  margin-bottom: 0.95rem;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(0, 102, 204, 0.08);
  border-radius: var(--radius-md);
  background: linear-gradient(
    180deg,
    rgba(231, 243, 255, 0.92),
    rgba(255, 255, 255, 0.88)
  );
  color: var(--text-strong);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.65;
}

.task-tag {
  margin-top: 1rem;
  color: var(--green-900);
  background: rgba(7, 193, 96, 0.08);
  border-color: rgba(7, 193, 96, 0.14);
}

.compare-frame {
  overflow: auto;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-soft);
}

.compare-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

.compare-table th,
.compare-table td {
  padding: 1rem 1.1rem;
  border-bottom: 1px solid rgba(0, 102, 204, 0.08);
  text-align: left;
  vertical-align: top;
}

.compare-table thead th {
  color: var(--accent-800);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(231, 243, 255, 0.72);
}

.zh .compare-table thead th {
  letter-spacing: 0.04em;
  text-transform: none;
}

.compare-table tbody th {
  width: 17%;
  color: var(--text-strong);
  font-size: 0.95rem;
  font-weight: 700;
  background: rgba(248, 251, 255, 0.9);
}

.compare-table td {
  color: var(--text-main);
  font-size: 0.93rem;
}

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

.signal-range {
  margin: 0;
  color: var(--text-faint);
  font-size: 0.84rem;
}

.signal-summary {
  margin: 0.82rem 0 0;
  color: var(--text-main);
  font-size: 0.92rem;
}

.chip-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.8rem;
}

.chip {
  padding-inline: 0.76rem;
}

.chip--rise {
  color: var(--green-900);
  background: rgba(7, 193, 96, 0.08);
  border-color: rgba(7, 193, 96, 0.14);
}

.signal-block {
  margin-top: 1rem;
}

.signal-note {
  margin: 1rem 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.faq-list {
  display: grid;
  gap: 0.85rem;
}

.faq-item {
  padding: 0 1.2rem;
  background: rgba(255, 255, 255, 0.8);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.05rem 0;
  list-style: none;
  cursor: pointer;
  color: var(--text-strong);
  font-size: 1rem;
  font-weight: 700;
}

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

.faq-plus {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: rgba(0, 153, 255, 0.08);
  color: var(--accent-800);
  font-size: 1.15rem;
  font-weight: 400;
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-plus {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 0 1.1rem;
  color: var(--text-main);
  font-size: 0.95rem;
}

.faq-answer p {
  margin: 0;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.96em;
}

.link-inline {
  color: var(--accent-800);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
}

.link-inline:hover {
  color: var(--green-900);
}

.cta-card {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: 1rem;
  align-items: center;
  background:
    radial-gradient(
      circle at top right,
      rgba(0, 153, 255, 0.12),
      transparent 30%
    ),
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.98),
      rgba(244, 250, 255, 0.93)
    );
}

.cta-copy p {
  margin: 0;
  color: var(--text-main);
  font-size: 1rem;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.15rem;
}

.source-list {
  padding: 1rem;
  border: 1px solid rgba(0, 102, 204, 0.09);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.78);
}

.source-item {
  display: grid;
  grid-template-columns: minmax(0, 7rem) minmax(0, 1fr);
  gap: 0.9rem;
  padding: 0.68rem 0;
  border-top: 1px solid rgba(0, 102, 204, 0.08);
}

.source-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.source-name {
  color: var(--text-faint);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.zh .source-name {
  letter-spacing: 0.04em;
  text-transform: none;
}

.source-value {
  color: var(--text-main);
  font-size: 0.9rem;
}

.footer {
  padding: 2rem 0 3rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(0, 0.92fr) minmax(0, 0.92fr);
  gap: 1rem;
}

.footer-card {
  height: 100%;
}

.footer-note {
  margin: 1rem 0 0;
  color: var(--text-faint);
  font-size: 0.84rem;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.65s ease,
    transform 0.65s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal.is-visible,
  .button,
  .nav-links a::after,
  .faq-plus {
    transition: none;
  }
}

@media (max-width: 1100px) {
  .hero-grid,
  .section-head,
  .value-layout,
  .cta-card,
  .footer-grid,
  .signal-grid,
  .story-grid,
  .route-grid,
  .fact-grid,
  .task-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .workflow-step:nth-child(3)::after,
  .workflow-step:last-child::after {
    display: none;
  }
}

@media (max-width: 860px) {
  .site-nav {
    padding-top: 0.75rem;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    position: absolute;
    top: calc(100% + 0.8rem);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.97);
    box-shadow: var(--shadow-strong);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-8px);
    transition:
      opacity 0.2s ease,
      transform 0.2s ease,
      visibility 0.2s ease;
  }

  .nav-menu.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-links,
  .nav-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-links a {
    padding: 0.35rem 0.1rem;
  }

  .hero,
  .section {
    padding-top: 3.7rem;
  }

  .hero-grid,
  .section-head,
  .value-layout,
  .cta-card,
  .footer-grid,
  .signal-grid,
  .story-grid,
  .route-grid,
  .fact-grid,
  .task-grid,
  .workflow-grid,
  .hero-side-grid {
    grid-template-columns: 1fr;
  }

  .section-head {
    align-items: start;
  }

  .workflow-step::after {
    display: none;
  }

  .source-item {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(var(--content-max), calc(100% - 1.2rem));
  }

  .nav-inner,
  .panel,
  .note-card,
  .fact-card,
  .story-card,
  .value-card,
  .task-card,
  .route-card,
  .signal-card,
  .faq-item,
  .footer-card,
  .cta-card {
    border-radius: 26px;
  }

  .hero-title {
    max-width: none;
    font-size: clamp(2.15rem, 10vw, 3.3rem);
  }

  .zh .hero-title {
    max-width: none;
    font-size: clamp(2rem, 9.2vw, 3.05rem);
  }

  .hero-copy,
  .section-copy,
  .cta-copy p {
    font-size: 0.98rem;
  }

  .button {
    width: 100%;
  }

  .hero-actions,
  .cta-actions {
    flex-direction: column;
  }

  .compare-table {
    min-width: 640px;
  }
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1rem;
  color: var(--text-faint);
  font-size: 0.82rem;
  font-weight: 700;
}

.breadcrumb span:last-child {
  color: var(--accent-800);
}

.page-hero {
  padding: 3.2rem 0 0.8rem;
}

.page-hero-grid {
  position: relative;
  overflow: hidden;
  padding: clamp(1.15rem, 2.1vw, 1.7rem);
  border: 1px solid rgba(8, 103, 216, 0.1);
  border-radius: 36px;
  background:
    radial-gradient(
      circle at top right,
      rgba(42, 155, 255, 0.12),
      transparent 28%
    ),
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.98),
      rgba(247, 251, 255, 0.94)
    );
  box-shadow: var(--shadow-strong);
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  gap: 1.1rem;
  align-items: start;
}

.page-hero-grid::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  border-radius: var(--radius-pill);
  background: linear-gradient(
    90deg,
    rgba(42, 155, 255, 0.95),
    rgba(8, 103, 216, 0.42),
    rgba(8, 103, 216, 0)
  );
}

.page-hero-grid > * {
  position: relative;
  z-index: 1;
}

.page-title {
  max-width: 12ch;
  margin: 0;
  color: var(--text-strong);
  font-size: clamp(2.5rem, 5.8vw, 4.75rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.zh .page-title {
  max-width: 9.5ch;
  font-size: clamp(2.25rem, 7.3vw, 4.15rem);
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.page-copy {
  max-width: 66ch;
  margin: 1.1rem 0 0;
  color: var(--text-main);
  font-size: 1.03rem;
}

.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 1.5rem 0 0;
}

.page-note {
  margin: 1rem 0 0;
  color: var(--text-faint);
  font-size: 0.9rem;
}

.hub-grid,
.news-grid,
.download-grid,
.mini-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.hub-card,
.download-card,
.news-card,
.mini-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  min-height: 100%;
  padding: 1.3rem;
  border: 1px solid var(--line-soft);
  border-radius: 28px;
  background:
    radial-gradient(
      circle at top right,
      rgba(42, 155, 255, 0.09),
      transparent 38%
    ),
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.98),
      rgba(247, 251, 255, 0.94)
    );
  box-shadow: var(--shadow-soft);
}

.hub-card::after,
.download-card::after,
.news-card::after,
.mini-card::after {
  content: "";
  position: absolute;
  inset: auto 1.3rem 0.95rem 1.3rem;
  height: 1px;
  background: linear-gradient(
    90deg,
    rgba(0, 153, 255, 0.18),
    rgba(7, 193, 96, 0.12)
  );
}

.hub-title,
.download-title,
.news-title,
.mini-title {
  margin: 0;
  color: var(--text-strong);
  font-size: 1.12rem;
  line-height: 1.28;
}

.hub-copy,
.download-copy,
.news-copy,
.mini-copy {
  margin: 0;
  color: var(--text-main);
  font-size: 0.94rem;
}

.hub-link,
.news-link {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: auto;
  color: var(--accent-800);
  font-size: 0.9rem;
  font-weight: 700;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  width: fit-content;
  padding: 0.42rem 0.78rem;
  border-radius: var(--radius-pill);
  background: rgba(8, 103, 216, 0.08);
  color: var(--accent-800);
  font-size: 0.78rem;
  font-weight: 700;
}

.status-pill--mint {
  background: rgba(7, 193, 96, 0.12);
  color: var(--green-900);
}

.status-pill--warn {
  background: rgba(245, 158, 11, 0.14);
  color: #9a6400;
}

.download-copy strong,
.news-copy strong {
  color: var(--text-strong);
}

.download-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: auto;
}

.download-meta,
.news-meta,
.mini-meta {
  color: var(--text-faint);
  font-size: 0.83rem;
}

.news-date {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  width: fit-content;
  padding: 0.42rem 0.76rem;
  border-radius: var(--radius-pill);
  background: rgba(8, 103, 216, 0.08);
  color: var(--accent-800);
  font-size: 0.76rem;
  font-weight: 700;
}

.download-band,
.guide-band,
.source-band {
  padding: 1.3rem;
  border: 1px solid var(--line-soft);
  border-radius: 32px;
  background:
    radial-gradient(
      circle at top right,
      rgba(42, 155, 255, 0.11),
      transparent 34%
    ),
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.97),
      rgba(247, 251, 255, 0.93)
    ),
    radial-gradient(circle at 100% 0%, rgba(7, 193, 96, 0.08), transparent 40%);
  box-shadow: var(--shadow-soft);
}

.guide-band {
  padding: 1.5rem;
}

.step-stack {
  display: grid;
  gap: 0.9rem;
}

.step-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  padding: 1.12rem 1.18rem;
  border: 1px solid var(--line-soft);
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.76);
}

.step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.9rem;
  background: var(--accent-gradient);
  color: #fff;
  font-weight: 800;
  font-size: 0.92rem;
}

.step-title {
  margin: 0;
  color: var(--text-strong);
  font-size: 1.02rem;
}

.step-copy {
  margin: 0.35rem 0 0;
  color: var(--text-main);
  font-size: 0.93rem;
}

.step-note {
  margin: 0.48rem 0 0;
  color: var(--text-faint);
  font-size: 0.84rem;
}

.source-trail {
  display: grid;
  gap: 0.8rem;
}

.source-row {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  padding: 0.98rem 1.06rem;
  border: 1px solid var(--line-soft);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.74);
}

.source-row-name {
  color: var(--text-faint);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.zh .source-row-name {
  letter-spacing: 0.04em;
  text-transform: none;
}

.source-row-copy {
  color: var(--text-main);
  font-size: 0.92rem;
}

.bullet-list {
  display: grid;
  gap: 0.55rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.bullet-list li {
  position: relative;
  padding-left: 1.05rem;
  color: var(--text-main);
  font-size: 0.93rem;
}

.bullet-list li::before {
  content: "";
  position: absolute;
  top: 0.74rem;
  left: 0;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-500), var(--green-500));
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line-soft);
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: var(--shadow-soft);
}

.table-wrap .compare-table {
  min-width: 760px;
}

.faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 1rem;
}

.faq-side {
  display: grid;
  gap: 1rem;
}

.section-tile {
  height: 100%;
  padding: 1.25rem;
  border: 1px solid var(--line-soft);
  border-radius: 28px;
  background:
    radial-gradient(
      circle at top right,
      rgba(42, 155, 255, 0.08),
      transparent 42%
    ),
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.98),
      rgba(247, 251, 255, 0.94)
    );
  box-shadow: var(--shadow-soft);
}

.section-tile p {
  margin: 0;
  color: var(--text-main);
  font-size: 0.93rem;
}

.section-tile h3 {
  margin: 0 0 0.55rem;
  color: var(--text-strong);
  font-size: 1.08rem;
}

.tile-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1rem;
}

.home-intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
  gap: 1rem;
}

.note-stack {
  display: grid;
  gap: 1rem;
}

.hero-compact .hero-title {
  max-width: 11.5ch;
}

.hero-compact .zh .hero-title {
  max-width: 9ch;
}

@media (max-width: 1100px) {
  .hub-grid,
  .news-grid,
  .download-grid,
  .mini-grid,
  .faq-grid,
  .page-hero-grid,
  .home-intro-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .hub-grid,
  .news-grid,
  .download-grid,
  .mini-grid,
  .faq-grid,
  .page-hero-grid,
  .home-intro-grid {
    grid-template-columns: 1fr;
  }

  .source-row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}

@media (max-width: 640px) {
  .page-title {
    max-width: none;
    font-size: clamp(2.18rem, 12vw, 3.55rem);
  }

  .zh .page-title {
    max-width: none;
    font-size: clamp(2.05rem, 11vw, 3.3rem);
  }

  .step-card {
    grid-template-columns: 1fr;
  }
}