:root {
  --bg: #f5efe5;
  --bg-strong: #e5dac8;
  --surface: rgba(255, 250, 242, 0.8);
  --surface-strong: rgba(255, 248, 239, 0.94);
  --surface-solid: #fffaf3;
  --ink: #15231d;
  --muted: #5c6961;
  --line: rgba(21, 35, 29, 0.12);
  --line-strong: rgba(21, 35, 29, 0.18);
  --accent: #de6435;
  --accent-deep: #a8401d;
  --accent-soft: #f4b98a;
  --green: #196f63;
  --green-soft: #bde3d8;
  --blue: #2d5d86;
  --blue-soft: #cfe0ef;
  --ink-soft: rgba(21, 35, 29, 0.08);
  --shadow: 0 24px 80px rgba(50, 39, 22, 0.12);
  --shadow-soft: 0 16px 36px rgba(21, 35, 29, 0.08);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(244, 185, 138, 0.42), transparent 24%),
    radial-gradient(circle at 90% 8%, rgba(189, 227, 216, 0.55), transparent 20%),
    linear-gradient(180deg, #f8f2e9 0%, var(--bg) 48%, #efe5d8 100%);
}

body::before {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.28) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.28) 1px, transparent 1px);
  background-size: 36px 36px;
  content: "";
  pointer-events: none;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.45), transparent 85%);
}

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

button {
  font: inherit;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 18px;
  left: 18px;
  z-index: 200;
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  transform: translateY(-140%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-shell {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  padding-bottom: 120px;
}

.topbar {
  position: sticky;
  top: 16px;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 16px;
  padding: 16px 20px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 999px;
  background: rgba(255, 250, 242, 0.82);
  backdrop-filter: blur(18px);
  box-shadow: 0 20px 40px rgba(21, 35, 29, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), #f08d53);
  color: #fff8f0;
  font-family: "DIN Alternate", "Arial Narrow", "PingFang SC", sans-serif;
  font-size: 24px;
  font-weight: 700;
}

.brand-text {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
}

.brand-text strong {
  font-size: 18px;
  letter-spacing: 0.04em;
}

.brand-text small {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.nav {
  display: inline-flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
}

.nav a {
  position: relative;
  padding: 6px 0;
  transition: color 0.2s ease;
}

.nav a::after {
  position: absolute;
  right: 0;
  bottom: -4px;
  left: 0;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.2s ease;
  content: "";
}

.nav a:hover,
.nav a[aria-current="true"] {
  color: var(--ink);
}

.nav a:hover::after,
.nav a:focus-visible::after,
.nav a[aria-current="true"]::after {
  transform: scaleX(1);
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 50%;
  background: #fff7ef;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  border-radius: 999px;
  background: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

.section {
  padding: 88px 0 0;
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
  min-height: calc(100vh - 120px);
  padding-top: 40px;
}

.eyebrow,
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  color: var(--accent-deep);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

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

.hero h1,
.section-heading h2,
.intro-block h2,
.community-copy h2,
.cta-intro h2 {
  margin: 0;
  font-family: "DIN Alternate", "Arial Narrow", "PingFang SC", sans-serif;
  letter-spacing: 0.01em;
}

.hero h1 {
  max-width: 11ch;
  font-size: clamp(52px, 9vw, 86px);
  line-height: 0.96;
}

.hero-text,
.section-heading p,
.intro-points p,
.feature-card p,
.journey-step p,
.community-copy p,
.community-card p,
.audience-card p,
.cta-intro p,
.footer p,
.panel-card p,
.mini-card p,
.signal-card p,
.scenario-card p,
.faq-item p,
.cta-entry p {
  color: var(--muted);
  line-height: 1.78;
}

.hero-text {
  max-width: 580px;
  margin: 24px 0 0;
  font-size: 17px;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 152px;
  min-height: 52px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), #ef8d59);
  color: #fff8f0;
  box-shadow: 0 18px 40px rgba(222, 100, 53, 0.22);
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.46);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.hero-tags span,
.panel-badge,
.mini-chip,
.scenario-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero-tags span {
  border: 1px solid rgba(21, 35, 29, 0.08);
  background: rgba(255, 255, 255, 0.48);
}

.hero-panel {
  position: relative;
}

.hero-panel::before {
  position: absolute;
  inset: auto 12% -24px auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(25, 111, 99, 0.26), transparent 68%);
  content: "";
  filter: blur(8px);
}

.panel-card,
.mini-card,
.feature-card,
.journey-step,
.community-card,
.audience-card,
.intro-band,
.footer,
.signal-card,
.scenario-card,
.faq-item,
.cta-shell,
.cta-entry {
  border: 1px solid rgba(255, 255, 255, 0.46);
  background: var(--surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.panel-card-main {
  position: relative;
  padding: 30px;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.panel-card-main::after {
  position: absolute;
  top: -42px;
  right: -24px;
  width: 180px;
  height: 180px;
  border-radius: 32px;
  background: linear-gradient(135deg, rgba(244, 185, 138, 0.3), rgba(255, 255, 255, 0.06));
  transform: rotate(24deg);
  content: "";
}

.panel-card h2 {
  position: relative;
  z-index: 1;
  max-width: 14ch;
  margin: 18px 0 12px;
  font-size: 34px;
  line-height: 1.08;
}

.panel-card p,
.metric-row {
  position: relative;
  z-index: 1;
}

.panel-badge {
  width: fit-content;
  background: rgba(21, 35, 29, 0.08);
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 24px;
}

.metric-row strong {
  display: block;
  font-family: "DIN Alternate", "Arial Narrow", sans-serif;
  font-size: 34px;
}

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

.panel-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 18px;
}

.mini-card {
  padding: 22px;
  border-radius: 24px;
}

.mini-card h3,
.feature-card h3,
.journey-step h3,
.community-card h3,
.audience-card h3,
.signal-card h3,
.scenario-card h3,
.cta-entry h3 {
  margin: 14px 0 10px;
  font-size: 22px;
}

.mini-card p,
.feature-card p,
.journey-step p,
.community-card p,
.audience-card p,
.signal-card p,
.scenario-card p,
.cta-entry p {
  margin: 0;
  font-size: 15px;
}

.mini-chip-orange {
  background: rgba(222, 100, 53, 0.14);
  color: var(--accent-deep);
}

.mini-chip-green {
  background: rgba(25, 111, 99, 0.14);
  color: var(--green);
}

.mini-chip-blue {
  background: rgba(45, 93, 134, 0.14);
  color: var(--blue);
}

.mini-chip-ink {
  background: rgba(21, 35, 29, 0.1);
  color: var(--ink);
}

.signal-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.signal-card {
  padding: 26px;
  border-radius: 28px;
}

.signal-card span,
.scenario-head strong,
.cta-entry span {
  color: var(--accent-deep);
  font-family: "DIN Alternate", "Arial Narrow", sans-serif;
  font-size: 15px;
  letter-spacing: 0.14em;
}

.intro-band {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
  padding: 34px;
  border-radius: 30px;
}

.intro-block h2,
.section-heading h2,
.community-copy h2,
.cta-intro h2 {
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.02;
}

.intro-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.intro-points article {
  padding: 20px 18px 0 0;
  border-top: 1px solid var(--line);
}

.intro-points h3 {
  margin: 0 0 8px;
  font-size: 20px;
}

.section-heading {
  max-width: 740px;
  margin-bottom: 32px;
}

.section-heading p {
  margin: 14px 0 0;
  font-size: 16px;
}

.feature-grid,
.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.feature-card,
.community-card,
.audience-card {
  padding: 24px;
  border-radius: 28px;
}

.feature-card span {
  color: var(--accent-deep);
  font-family: "DIN Alternate", "Arial Narrow", sans-serif;
  font-size: 15px;
  letter-spacing: 0.14em;
}

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

.scenario-card {
  padding: 26px;
  border-radius: 28px;
  background:
    radial-gradient(circle at top right, rgba(244, 185, 138, 0.18), transparent 28%),
    var(--surface);
}

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

.scenario-head span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(21, 35, 29, 0.08);
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
}

.scenario-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.scenario-tags span {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.45);
}

.journey-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.journey-step {
  position: relative;
  padding: 26px;
  border-radius: 28px;
  overflow: hidden;
}

.journey-step::after {
  position: absolute;
  inset: auto -24px -24px auto;
  width: 120px;
  height: 120px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(244, 185, 138, 0.18), transparent);
  transform: rotate(18deg);
  content: "";
}

.journey-step strong {
  color: var(--green);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.community {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 22px;
  align-items: start;
}

.community-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.faq-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.faq-item {
  padding: 24px 24px 20px;
  border-radius: 24px;
}

.faq-item[open] {
  background: var(--surface-strong);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  cursor: pointer;
  list-style: none;
  font-size: 18px;
  font-weight: 700;
}

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

.faq-item summary::after {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(21, 35, 29, 0.08);
  content: "+";
}

.faq-item[open] summary::after {
  content: "-";
}

.faq-item p {
  margin: 14px 0 0;
  font-size: 15px;
}

.cta-shell {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 24px;
  padding: 34px;
  border-radius: 32px;
  background:
    radial-gradient(circle at top right, rgba(189, 227, 216, 0.54), transparent 24%),
    rgba(255, 250, 242, 0.82);
}

.cta-intro p {
  max-width: 620px;
  margin: 16px 0 0;
}

.cta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.cta-entry {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  padding: 24px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.38);
  box-shadow: var(--shadow-soft);
}

.cta-entry h3 {
  margin: 0;
}

.cta-entry p {
  flex: 1;
}

.footer {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: end;
  gap: 20px;
  margin-top: 88px;
  padding: 24px 28px;
  border-radius: 28px;
}

.footer strong {
  display: inline-block;
  margin-bottom: 8px;
}

.footer p {
  margin: 0;
  justify-self: end;
  max-width: 360px;
  font-size: 14px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-self: center;
  color: var(--muted);
  font-size: 14px;
}

.quick-entry {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 126px;
  min-height: 52px;
  padding: 0 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), #ef8d59);
  color: #fff8f0;
  box-shadow: 0 18px 40px rgba(222, 100, 53, 0.26);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

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

@media (max-width: 1080px) {
  .hero,
  .intro-band,
  .community,
  .cta-shell {
    grid-template-columns: 1fr;
  }

  .signal-band,
  .feature-grid,
  .journey-track,
  .scenario-grid,
  .faq-list,
  .cta-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .intro-points {
    grid-template-columns: 1fr;
  }

  .footer {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .footer p {
    justify-self: start;
    max-width: none;
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(calc(100% - 20px), var(--max-width));
    padding-bottom: 128px;
  }

  .topbar {
    top: 10px;
    margin-top: 10px;
    padding: 14px 16px;
    border-radius: 26px;
  }

  .menu-toggle {
    display: inline-block;
  }

  .nav {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 18px;
    border: 1px solid rgba(255, 255, 255, 0.42);
    border-radius: 22px;
    background: rgba(255, 250, 242, 0.95);
    box-shadow: var(--shadow);
  }

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

  .section {
    padding-top: 72px;
  }

  .hero {
    min-height: auto;
    padding-top: 28px;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(42px, 16vw, 64px);
  }

  .panel-grid,
  .signal-band,
  .feature-grid,
  .journey-track,
  .community-grid,
  .audience-grid,
  .scenario-grid,
  .faq-list,
  .cta-grid {
    grid-template-columns: 1fr;
  }

  .metric-row {
    grid-template-columns: 1fr;
  }

  .faq-item summary {
    font-size: 17px;
  }

  .quick-entry {
    right: 10px;
    bottom: 12px;
    left: 10px;
  }
}