:root {
  --bg: #f6f1e8;
  --bg-soft: #efe8dd;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-strong: #fffdf8;
  --surface-dark: #18201d;
  --text: #171717;
  --muted: #5c5c58;
  --line: rgba(23, 23, 23, 0.08);
  --line-strong: rgba(15, 92, 78, 0.22);
  --accent: #0f6b5d;
  --accent-strong: #094d43;
  --accent-soft: rgba(15, 107, 93, 0.1);
  --gold: #ba8a42;
  --success: #d7efe8;
  --shadow: 0 24px 60px rgba(23, 23, 23, 0.08);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --container: min(1180px, calc(100vw - 40px));
  --header-height: 84px;
  --transition: 180ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 20%, rgba(186, 138, 66, 0.16), transparent 30%),
    radial-gradient(circle at 85% 15%, rgba(15, 107, 93, 0.12), transparent 28%),
    linear-gradient(180deg, #f9f5ee 0%, #f4ede3 50%, #efe8dd 100%);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

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

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

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

:focus-visible {
  outline: 3px solid rgba(15, 107, 93, 0.35);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 1000;
  padding: 12px 16px;
  border-radius: 999px;
  background: var(--surface-strong);
  color: var(--accent-strong);
  box-shadow: var(--shadow);
  transition: top var(--transition);
}

.skip-link:focus {
  top: 16px;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.section {
  padding: 100px 0;
}

.section-soft {
  background: rgba(255, 255, 255, 0.32);
  border-block: 1px solid rgba(23, 23, 23, 0.04);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(18px);
  background: rgba(246, 241, 232, 0.72);
  border-bottom: 1px solid transparent;
  transition:
    background var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.site-header.is-scrolled {
  background: rgba(249, 245, 238, 0.86);
  border-color: rgba(23, 23, 23, 0.06);
  box-shadow: 0 8px 30px rgba(23, 23, 23, 0.05);
}

.header-inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-height: 44px;
}

.brand-mark {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background:
    linear-gradient(135deg, rgba(15, 107, 93, 1), rgba(9, 77, 67, 1)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.3), transparent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.25),
    0 12px 24px rgba(15, 107, 93, 0.25);
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.brand-mark::after {
  inset: 15px;
  border-width: 2px;
  border-color: rgba(255, 255, 255, 0.65);
}

.brand-copy {
  display: grid;
  gap: 2px;
}

.brand-copy strong {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.brand-copy span {
  color: var(--muted);
  font-size: 13px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  position: relative;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--muted);
  transition:
    color var(--transition),
    background var(--transition),
    transform var(--transition);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.62);
}

.site-nav .nav-cta {
  margin-left: 6px;
  color: var(--surface-strong);
  background: var(--accent);
  box-shadow: 0 14px 24px rgba(15, 107, 93, 0.18);
}

.site-nav .nav-cta:hover,
.site-nav .nav-cta:focus-visible {
  color: var(--surface-strong);
  background: var(--accent-strong);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  min-width: 44px;
  min-height: 44px;
  padding: 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(23, 23, 23, 0.06);
}

.menu-toggle span {
  width: 20px;
  height: 2px;
  margin: 0 auto;
  border-radius: 999px;
  background: var(--text);
  transition: transform var(--transition);
}

.hero {
  padding-top: 64px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--accent-strong);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}

.hero-copy h1,
.section-heading h2 {
  margin: 0;
  font-family: "Noto Serif SC", "Source Han Serif SC", serif;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero-copy h1 {
  max-width: 12em;
  font-size: clamp(2.75rem, 5vw, 4.85rem);
  line-height: 1.06;
}

.hero-desc,
.section-heading p {
  max-width: 64ch;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.hero-actions,
.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.button {
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    background var(--transition),
    color var(--transition),
    border-color var(--transition);
}

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

.button-primary {
  color: var(--surface-strong);
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 16px 30px rgba(15, 107, 93, 0.22);
}

.button-primary:hover,
.button-primary:focus-visible {
  box-shadow: 0 20px 34px rgba(15, 107, 93, 0.28);
}

.button-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(23, 23, 23, 0.08);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: rgba(255, 255, 255, 0.95);
}

.hero-metrics {
  list-style: none;
  padding: 0;
  margin: 36px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.hero-metrics li,
.feature-card,
.scenario-card,
.showcase-panel,
.download-card,
.faq-item,
.visual-card,
.phone-shell {
  border: 1px solid rgba(23, 23, 23, 0.06);
  box-shadow: var(--shadow);
}

.hero-metrics li {
  padding: 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.62);
}

.hero-metrics strong {
  display: block;
  font-size: 18px;
  margin-bottom: 6px;
}

.hero-metrics span {
  color: var(--muted);
  font-size: 14px;
}

.signal-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.signal-strip span,
.result-tag,
.panel-label,
.mini-label,
.scenario-kicker {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--accent-strong);
  border: 1px solid rgba(15, 107, 93, 0.1);
  font-size: 13px;
  font-weight: 700;
}

.hero-visual {
  position: relative;
  min-height: 680px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.visual-card.workspace {
  width: min(100%, 540px);
  padding: 28px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.72)),
    linear-gradient(180deg, rgba(15, 107, 93, 0.08), transparent 40%);
  backdrop-filter: blur(18px);
}

.visual-topline {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 24px;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(23, 23, 23, 0.18);
}

.search-bar-demo {
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: rgba(15, 107, 93, 0.07);
  border: 1px solid rgba(15, 107, 93, 0.12);
}

.search-label {
  display: inline-flex;
  align-items: center;
  margin-bottom: 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

.search-bar-demo p {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
}

.result-stack {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.result-card {
  padding: 22px;
  border-radius: var(--radius-md);
  background: var(--surface-strong);
  border: 1px solid rgba(23, 23, 23, 0.06);
}

.result-card-dark {
  color: #f7f3ec;
  background: linear-gradient(180deg, #1a2621, #141a18);
}

.result-head,
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.result-badge {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.badge-emerald {
  color: var(--accent-strong);
  background: rgba(15, 107, 93, 0.12);
}

.badge-ink {
  color: #ebefe7;
  background: rgba(255, 255, 255, 0.08);
}

.result-card h2,
.feature-card h3,
.scenario-card h3,
.showcase-panel h3,
.download-card h2 {
  margin: 16px 0 10px;
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  line-height: 1.3;
}

.result-card p,
.result-card ul,
.scenario-card p,
.scenario-card ul,
.showcase-note p,
.mini-board p,
.download-card p,
.faq-answer p {
  margin: 0;
  color: inherit;
}

.result-card p,
.result-card ul,
.scenario-card p,
.scenario-card li,
.showcase-note p,
.mini-board p,
.download-card p,
.faq-answer p {
  color: var(--muted);
}

.result-card-dark p,
.result-card-dark li,
.showcase-panel-dark p,
.showcase-panel-dark .flow-step span,
.showcase-panel-dark .mini-board p {
  color: rgba(247, 243, 236, 0.78);
}

.inline-points {
  display: grid;
  gap: 8px;
  padding-left: 18px;
  margin-top: 14px;
}

.phone-shell {
  position: absolute;
  right: -6px;
  bottom: 12px;
  width: 264px;
  padding: 12px;
  border-radius: 36px;
  background: linear-gradient(180deg, #19201e, #0d1110);
}

.phone-screen {
  padding: 18px;
  border-radius: 28px;
  min-height: 520px;
  background:
    radial-gradient(circle at top, rgba(15, 107, 93, 0.22), transparent 28%),
    linear-gradient(180deg, #1d2a25, #121917 60%, #0c0f0f 100%);
  color: #f7f3ec;
}

.phone-header,
.phone-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.phone-header {
  color: rgba(247, 243, 236, 0.78);
  font-size: 13px;
}

.phone-search,
.phone-card,
.mini-board {
  border-radius: 22px;
}

.phone-search {
  margin-top: 20px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.06);
}

.phone-search span {
  font-size: 14px;
  color: rgba(247, 243, 236, 0.72);
}

.phone-search p {
  margin: 10px 0 0;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
}

.phone-card {
  margin-top: 18px;
  padding: 18px;
  background: rgba(15, 107, 93, 0.18);
}

.phone-card strong,
.flow-step strong {
  display: block;
  margin: 10px 0 6px;
  font-size: 18px;
}

.phone-card p {
  margin: 0;
  color: rgba(247, 243, 236, 0.78);
}

.phone-list {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.phone-list-item {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
}

.phone-list-item span {
  color: rgba(247, 243, 236, 0.68);
}

.floating-note {
  position: absolute;
  padding: 18px 20px;
  max-width: 220px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(23, 23, 23, 0.05);
  box-shadow: var(--shadow);
}

.floating-note strong {
  display: block;
  margin-bottom: 6px;
}

.floating-note span {
  color: var(--muted);
  font-size: 14px;
}

.note-primary {
  left: -10px;
  top: 60px;
}

.note-secondary {
  right: 160px;
  bottom: 88px;
}

.section-heading {
  max-width: 760px;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.15;
}

.feature-grid,
.scenario-grid,
.showcase-grid {
  display: grid;
  gap: 18px;
  margin-top: 40px;
}

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

.feature-card,
.scenario-card,
.showcase-panel,
.download-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.76);
}

.feature-card {
  min-height: 240px;
  padding: 28px;
}

.feature-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(15, 107, 93, 0.1);
  color: var(--accent-strong);
  font-weight: 800;
}

.feature-card p {
  color: var(--muted);
  margin: 0;
}

.scenario-layout,
.showcase-layout {
  display: grid;
  gap: 40px;
}

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

.scenario-card {
  min-height: 320px;
  padding: 28px;
}

.scenario-card ul {
  padding-left: 18px;
  display: grid;
  gap: 8px;
  margin-top: 18px;
}

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

.showcase-panel {
  padding: 28px;
}

.showcase-panel-dark {
  color: #f7f3ec;
  background: linear-gradient(180deg, #15211d, #0d1110 72%);
}

.workspace-list {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.workspace-row,
.flow-step {
  padding: 18px 20px;
  border-radius: 18px;
  display: grid;
  gap: 6px;
  border: 1px solid rgba(23, 23, 23, 0.06);
  background: rgba(255, 255, 255, 0.72);
}

.workspace-row strong,
.flow-step strong {
  font-size: 15px;
}

.workspace-row span,
.flow-step span {
  color: var(--muted);
  font-size: 14px;
}

.showcase-panel-dark .flow-step {
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.05);
}

.showcase-note,
.mini-board {
  margin-top: 24px;
  padding: 20px;
  border-radius: 20px;
  border: 1px solid rgba(23, 23, 23, 0.06);
  background: rgba(15, 107, 93, 0.07);
}

.mini-board {
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.05);
}

.mobile-flow {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.download-card {
  padding: 36px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
}

.download-card::after {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  right: -80px;
  top: -80px;
  background: radial-gradient(circle, rgba(15, 107, 93, 0.1), transparent 72%);
}

.faq-list {
  display: grid;
  gap: 14px;
  margin-top: 36px;
}

.faq-item {
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.82);
}

.faq-question {
  width: 100%;
  min-height: 72px;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  text-align: left;
  font-weight: 700;
}

.faq-icon {
  position: relative;
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 16px;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
  transform: translate(-50%, -50%);
  transition: transform var(--transition), opacity var(--transition);
}

.faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-question[aria-expanded="true"] .faq-icon::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(180deg);
}

.faq-answer {
  padding: 0 24px 22px;
}

.site-footer {
  padding: 24px 0 40px;
}

.footer-inner {
  padding-top: 24px;
  border-top: 1px solid rgba(23, 23, 23, 0.08);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.brand-footer .brand-mark {
  width: 38px;
  height: 38px;
}

.footer-meta {
  text-align: right;
  color: var(--muted);
  font-size: 14px;
}

.footer-meta p {
  margin: 0;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 60;
  max-width: min(360px, calc(100vw - 32px));
  padding: 16px 18px;
  border-radius: 18px;
  color: var(--surface-strong);
  background: rgba(24, 32, 29, 0.92);
  box-shadow: 0 20px 44px rgba(23, 23, 23, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.06);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition:
    opacity var(--transition),
    transform var(--transition);
}

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

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 420ms ease,
    transform 420ms ease;
}

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

@media (max-width: 1180px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 {
    max-width: 100%;
  }

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

  .phone-shell {
    right: 12px;
  }
}

@media (max-width: 960px) {
  :root {
    --container: min(100vw - 28px, 100%);
  }

  .section {
    padding: 80px 0;
  }

  .menu-toggle {
    display: flex;
  }

  .menu-toggle[aria-expanded="true"] span:first-child {
    transform: translateY(4px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-4px) rotate(-45deg);
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    right: 14px;
    left: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    border-radius: 24px;
    background: rgba(255, 253, 248, 0.95);
    border: 1px solid rgba(23, 23, 23, 0.07);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    justify-content: center;
  }

  .site-nav .nav-cta {
    margin-left: 0;
    margin-top: 6px;
  }

  .hero-metrics,
  .scenario-grid,
  .showcase-grid,
  .download-card {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 720px;
  }

  .note-secondary {
    right: 18px;
    bottom: 124px;
  }

  .download-card {
    padding: 28px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-meta {
    text-align: left;
  }
}

@media (max-width: 720px) {
  .hero {
    padding-top: 36px;
  }

  .hero-visual {
    min-height: 760px;
  }

  .visual-card.workspace {
    padding: 22px;
  }

  .floating-note {
    position: static;
    max-width: 100%;
  }

  .hero-visual {
    display: grid;
    gap: 16px;
  }

  .phone-shell {
    position: static;
    width: min(100%, 340px);
    margin-inline: auto;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .hero-metrics li,
  .feature-card,
  .scenario-card,
  .showcase-panel,
  .download-card,
  .faq-item {
    border-radius: 20px;
  }

  .button {
    width: 100%;
  }
}