:root {
  color-scheme: only light;
  --bg: #f6f1e8;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-soft: #f3f8fc;
  --surface-strong: #ffffff;
  --ink: #15212b;
  --muted: #60707b;
  --line: rgba(23, 33, 43, 0.1);
  --line-strong: rgba(23, 33, 43, 0.16);
  --blue: #31aae8;
  --blue-deep: #157bb9;
  --blue-soft: rgba(49, 170, 232, 0.12);
  --orange: #f6a15c;
  --orange-deep: #ea7b2c;
  --orange-soft: rgba(246, 161, 92, 0.14);
  --shadow: 0 18px 38px rgba(21, 37, 52, 0.08);
  --shadow-strong: 0 24px 56px rgba(21, 37, 52, 0.14);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --container: min(1120px, calc(100vw - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 0% 0%, rgba(246, 161, 92, 0.18), transparent 28%),
    radial-gradient(circle at 100% 12%, rgba(49, 170, 232, 0.16), transparent 24%),
    linear-gradient(180deg, #fdfbf8 0%, #f7f3ec 46%, #f4efe5 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: auto;
  z-index: 0;
  border-radius: 999px;
  pointer-events: none;
  filter: blur(24px);
}

body::before {
  top: 140px;
  left: -80px;
  width: 220px;
  height: 220px;
  background: rgba(246, 161, 92, 0.18);
}

body::after {
  top: 520px;
  right: -70px;
  width: 260px;
  height: 260px;
  background: rgba(49, 170, 232, 0.14);
}

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

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

button,
input,
textarea {
  font: inherit;
}

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

.section {
  position: relative;
  z-index: 1;
  padding: 88px 0;
}

.compact-section {
  padding-top: 40px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(252, 251, 248, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 10px 26px rgba(21, 37, 52, 0.04);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
}

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

.brand-mark {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--orange), var(--blue));
  box-shadow:
    0 0 0 8px rgba(255, 255, 255, 0.78),
    0 10px 22px rgba(49, 170, 232, 0.18);
}

.brand-text {
  display: grid;
}

.brand-text strong {
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.nav {
  display: inline-flex;
  align-items: center;
  gap: 24px;
}

.nav a {
  position: relative;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -10px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--orange), var(--blue));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

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

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

.nav-cta,
.button,
.scenario-tab,
.workflow-actions-preview button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease;
}

.nav-cta,
.button {
  min-height: 48px;
  padding: 0 22px;
  border: none;
  cursor: pointer;
  font-weight: 700;
}

.nav-cta,
.button-primary {
  color: #fff;
  background: linear-gradient(135deg, #f7a962, var(--orange-deep));
  box-shadow:
    0 14px 28px rgba(232, 119, 32, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

.button-secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(23, 33, 43, 0.08);
  box-shadow: 0 10px 22px rgba(21, 37, 52, 0.05);
}

.nav-cta:hover,
.button:hover,
.scenario-tab:hover,
.workflow-actions-preview button:hover {
  transform: translateY(-1px);
}

.hero {
  padding-top: 64px;
  overflow: clip;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.92fr);
  gap: 40px;
  align-items: center;
}

.eyebrow,
.section-label,
.card-kicker,
.scenario-kicker {
  margin: 0 0 12px;
  color: var(--blue-deep);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-copy h1,
.section-heading h2,
.info-card h3,
.benefit-card h3,
.scenario-copy h3 {
  margin: 0;
  letter-spacing: -0.04em;
}

.hero-copy h1 {
  max-width: 11ch;
  font-size: clamp(3rem, 6vw, 5.6rem);
  line-height: 0.98;
  color: #11202c;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
}

.hero-text,
.section-heading p,
.summary-item p,
.info-card p,
.benefit-card p,
.scenario-copy p,
.workflow-ticket p,
.join-copy p,
.join-list,
.site-footer p {
  color: var(--muted);
  line-height: 1.75;
}

.hero-text {
  max-width: 40rem;
  margin: 22px 0 0;
  font-size: 1.06rem;
}

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

.hero-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.summary-item,
.info-card,
.benefit-card,
.workflow-preview,
.join-visual-panel {
  background: var(--surface);
  border: 1px solid rgba(23, 33, 43, 0.08);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.summary-item {
  position: relative;
  padding: 18px;
  border-radius: 20px;
  overflow: hidden;
}

.summary-item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, var(--orange), var(--blue));
}

.summary-item strong {
  display: block;
  font-size: 1rem;
}

.summary-item p {
  margin: 8px 0 0;
  font-size: 0.94rem;
}

.hero-visual {
  min-width: 0;
}

.window-shell {
  position: relative;
  overflow: hidden;
  border-radius: 30px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(247, 251, 254, 0.96));
  border: 1px solid rgba(255, 255, 255, 0.75);
  box-shadow: 0 24px 48px rgba(21, 37, 52, 0.12);
}

.window-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.32), transparent 28%),
    radial-gradient(circle at 100% 100%, rgba(49, 170, 232, 0.08), transparent 30%);
}

.window-chrome {
  display: flex;
  gap: 8px;
  padding: 16px 18px 0;
}

.window-chrome span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(23, 33, 43, 0.16);
}

.window-shell img {
  width: 100%;
}

.hero-caption {
  margin-top: 14px;
  padding: 16px 18px;
  border-left: 3px solid var(--orange);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 28px rgba(21, 37, 52, 0.06);
  border-radius: 0 18px 18px 0;
}

.hero-caption span {
  display: block;
  font-size: 0.82rem;
}

.hero-caption strong {
  display: block;
  margin-top: 6px;
  color: var(--ink);
  font-size: 1rem;
}

.section-heading {
  max-width: 720px;
}

.section-heading h2 {
  font-size: clamp(2.2rem, 4vw, 3.7rem);
  line-height: 1.02;
  color: #12202b;
}

.section-heading p {
  margin: 16px 0 0;
  font-size: 1rem;
}

.overview-grid,
.benefit-grid {
  display: grid;
  gap: 18px;
  margin-top: 30px;
}

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

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

.info-card,
.benefit-card {
  padding: 26px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(248, 250, 252, 0.9));
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease;
}

.info-card:hover,
.benefit-card:hover,
.scenario-item:hover,
.join-visual-panel:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-strong);
}

.info-card h3,
.benefit-card h3,
.scenario-copy h3 {
  font-size: 1.45rem;
  line-height: 1.14;
}

.info-card p,
.benefit-card p {
  margin: 12px 0 0;
}

.focus-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(23, 33, 43, 0.07);
}

.focus-chip,
.status-pill,
.ticket-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
}

.focus-chip {
  background: linear-gradient(180deg, rgba(49, 170, 232, 0.12), rgba(49, 170, 232, 0.06));
  color: var(--blue-deep);
  font-weight: 700;
}

.scenario-list {
  display: grid;
  gap: 30px;
  margin-top: 32px;
}

.scenario-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(320px, 0.84fr) minmax(0, 1.16fr);
  gap: 28px;
  align-items: start;
  padding: 30px;
  border-radius: 32px;
  background:
    radial-gradient(circle at top right, rgba(49, 170, 232, 0.08), transparent 26%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(249, 251, 252, 0.92));
  border: 1px solid rgba(23, 33, 43, 0.08);
  box-shadow: var(--shadow);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease;
}

.scenario-item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 6px;
  border-radius: 32px 0 0 32px;
  background: linear-gradient(180deg, var(--orange), var(--blue));
}

.scenario-lead {
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 700;
}

.scenario-description {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.82;
}

.image-frame {
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid rgba(23, 33, 43, 0.06);
  background: linear-gradient(180deg, #ffffff, var(--surface-soft));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.image-frame img {
  width: 100%;
}

.workflow-preview {
  padding: 22px;
  border-radius: 26px;
  background:
    radial-gradient(circle at top right, rgba(49, 170, 232, 0.12), transparent 24%),
    linear-gradient(180deg, #ffffff, #f7fafc);
}

.workflow-toolbar,
.workflow-actions-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.status-pill {
  background: rgba(23, 33, 43, 0.06);
  color: var(--muted);
  font-size: 0.9rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.status-pill.active {
  color: #fff;
  background: linear-gradient(135deg, var(--orange), var(--orange-deep));
}

.workflow-ticket {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-top: 18px;
  padding: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(23, 33, 43, 0.06);
  box-shadow: 0 12px 22px rgba(21, 37, 52, 0.05);
}

.workflow-ticket strong {
  display: block;
  font-size: 1.08rem;
}

.workflow-ticket p {
  margin: 8px 0 0;
}

.ticket-tag {
  color: var(--orange-deep);
  background: rgba(245, 154, 85, 0.14);
  font-size: 0.8rem;
  font-weight: 700;
}

.workflow-actions-preview {
  margin-top: 16px;
}

.workflow-actions-preview button {
  min-height: 40px;
  padding: 0 14px;
  color: var(--ink);
  background: #fff;
  border: 1px solid rgba(23, 33, 43, 0.08);
  box-shadow: 0 8px 18px rgba(21, 37, 52, 0.04);
}

.join-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.92fr);
  gap: 30px;
  align-items: start;
}

.join-copy {
  padding-top: 8px;
}

.join-list {
  margin: 20px 0 0;
  padding-left: 18px;
}

.join-cta-button {
  margin-top: 28px;
  padding: 0 28px;
  min-height: 64px;
  font-size: 1.02rem;
  box-shadow:
    0 16px 30px rgba(232, 119, 32, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

.join-visual-panel {
  position: relative;
  padding: 28px;
  border-radius: 30px;
  background:
    radial-gradient(circle at top right, rgba(47, 162, 224, 0.14), transparent 30%),
    radial-gradient(circle at bottom left, rgba(246, 161, 92, 0.14), transparent 28%),
    linear-gradient(180deg, #ffffff, #f8fbfd);
  overflow: hidden;
}

.join-visual-panel::after {
  content: "";
  position: absolute;
  inset: 14px;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  pointer-events: none;
}

.join-visual-panel h3 {
  margin: 0;
  font-size: 1.5rem;
  line-height: 1.18;
  letter-spacing: -0.04em;
}

.join-visual-frame {
  margin-top: 18px;
  box-shadow: 0 18px 34px rgba(21, 37, 52, 0.1);
}

.join-visual-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.join-visual-tags span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--blue-deep);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(47, 162, 224, 0.14);
  font-weight: 700;
}

.site-footer {
  padding: 24px 0 36px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid rgba(23, 33, 43, 0.08);
}

.footer-inner p {
  margin: 0;
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 520ms ease,
    transform 520ms ease;
}

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

@media (max-width: 1080px) {
  .hero-grid,
  .scenario-item,
  .join-grid,
  .overview-grid,
  .benefit-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 {
    max-width: none;
  }

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

@media (max-width: 820px) {
  .section {
    padding: 72px 0;
  }

  .topbar-inner {
    padding: 14px 0;
    flex-wrap: wrap;
  }

  .nav {
    order: 3;
    width: 100%;
    gap: 18px;
  }

  .hero-copy h1 {
    font-size: clamp(2.6rem, 12vw, 4.5rem);
  }

  .section-heading h2 {
    font-size: clamp(2rem, 9vw, 3.1rem);
  }
}

@media (max-width: 640px) {
  :root {
    --container: min(100vw - 24px, 1120px);
  }

  html {
    scroll-behavior: auto;
  }

  .topbar {
    position: static;
  }

  .section {
    padding: 58px 0;
  }

  .hero {
    padding-top: 34px;
  }

  .scenario-item {
    padding: 22px;
  }

  .hero-actions,
  .hero-actions .button,
  .nav-cta,
  .join-cta-button {
    width: 100%;
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .nav-cta,
  .button,
  .scenario-tab,
  .workflow-actions-preview button {
    transition: none;
  }
}