:root {
  --bg: #08121c;
  --surface: rgba(11, 21, 33, 0.86);
  --surface-light: rgba(255, 255, 255, 0.92);
  --line: rgba(255, 255, 255, 0.08);
  --line-dark: rgba(11, 21, 33, 0.08);
  --text: #f4f7fb;
  --text-dark: #0e1b27;
  --muted: rgba(232, 239, 245, 0.72);
  --muted-dark: #61707f;
  --accent: #2cd2b6;
  --accent-2: #72a9ff;
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --shadow-xl: 0 32px 90px rgba(0, 0, 0, 0.28);
  --shadow-lg: 0 18px 44px rgba(0, 0, 0, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 16%, rgba(44, 210, 182, 0.18), transparent 22%),
    radial-gradient(circle at 84% 18%, rgba(114, 169, 255, 0.14), transparent 22%),
    linear-gradient(180deg, #08121c 0%, #0a1420 42%, #0f1924 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 42px 42px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.42), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.42), transparent 88%);
  opacity: 0.3;
}

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

.site-frame {
  position: relative;
  overflow: hidden;
}

.page-shell {
  position: relative;
  z-index: 1;
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
  padding: 36px 0 72px;
}

.site-header {
  position: relative;
  z-index: 2;
  width: min(1280px, calc(100% - 40px));
  margin: 0 auto;
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3), 0 12px 26px rgba(44, 210, 182, 0.24);
}

.brand-copy {
  display: flex;
  flex-direction: column;
}

.brand-copy strong,
.hero-copy h1,
.section-heading h2,
.panel-head h2,
.business-copy h2,
.value-card h3,
.business-card h3,
.roadmap-card h3,
.faq-card h3,
.cta-band h2 {
  font-family: "Sora", sans-serif;
}

.brand-copy strong {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.brand-copy small {
  color: var(--muted);
  font-size: 0.82rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 0.94rem;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-chip,
.preview-pill {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 0.88rem;
}

.status-chip {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  color: var(--muted);
}

.hero {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: 28px;
  align-items: stretch;
  padding-top: 44px;
}

.hero-copy h1 {
  margin: 0 0 24px;
  max-width: 780px;
  font-size: clamp(3rem, 7vw, 5.6rem);
  line-height: 0.96;
  letter-spacing: -0.045em;
}

.eyebrow,
.section-tag,
.preview-label,
.input-block span,
.subpanel-head span,
.result-summary,
.next-steps,
select,
textarea,
input,
button {
  font-size: 0.96rem;
}

.eyebrow,
.section-tag {
  margin: 0 0 12px;
  color: rgba(232, 239, 245, 0.68);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.hero-support {
  max-width: 660px;
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.hero-metrics,
.trust-strip,
.value-grid,
.roadmap-grid,
.template-grid,
.faq-grid {
  display: grid;
  gap: 14px;
}

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

.metric-card,
.trust-card,
.value-card,
.business-card,
.roadmap-card,
.template-card,
.faq-card,
.card-dark,
.card-light,
.cta-band {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.metric-card,
.trust-card,
.value-card,
.business-card,
.roadmap-card,
.template-card,
.faq-card {
  border: 1px solid var(--line);
}

.metric-card {
  padding: 18px 18px 20px;
  background: rgba(255, 255, 255, 0.04);
}

.metric-card span,
.trust-card span {
  display: block;
  margin-bottom: 8px;
  color: rgba(232, 239, 245, 0.6);
}

.metric-card strong,
.trust-card strong {
  display: block;
  font-size: 1rem;
  line-height: 1.55;
}

.card-dark {
  padding: 26px;
  background: linear-gradient(180deg, rgba(10, 20, 31, 0.96), rgba(10, 18, 28, 0.88));
  border: 1px solid var(--line);
}

.preview-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.preview-pill {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  color: rgba(255, 255, 255, 0.84);
}

.preview-pill--accent {
  background: rgba(44, 210, 182, 0.18);
  color: #b6fff2;
}

.preview-sheet {
  position: relative;
  height: 220px;
  margin-bottom: 18px;
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: radial-gradient(circle at 20% 18%, rgba(44, 210, 182, 0.14), transparent 24%), linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
}

.staff-lines {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(180deg, transparent 0, transparent 28px, rgba(255, 255, 255, 0.13) 28px, rgba(255, 255, 255, 0.13) 30px, transparent 30px, transparent 58px);
}

.preview-notes {
  position: absolute;
  inset: 24px;
}

.preview-note {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f8fbff, #8fd8ff);
  box-shadow: 0 0 0 3px rgba(114, 169, 255, 0.12);
}

.preview-note::after {
  content: "";
  position: absolute;
  top: -42px;
  right: 1px;
  width: 2px;
  height: 48px;
  background: rgba(255, 255, 255, 0.9);
}

.preview-note--1 { left: 9%; top: 54%; }
.preview-note--2 { left: 23%; top: 44%; }
.preview-note--3 { left: 37%; top: 50%; }
.preview-note--4 { left: 51%; top: 38%; }
.preview-note--5 { left: 67%; top: 46%; }
.preview-note--6 { left: 82%; top: 34%; }

.preview-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.preview-card {
  padding: 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
}

.preview-card--wide {
  grid-column: 1 / -1;
}

.preview-label {
  display: block;
  margin-bottom: 10px;
  color: rgba(232, 239, 245, 0.6);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.preview-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.mini-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mini-tags span,
.tag,
.template-tag {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
}

.mini-tags span {
  background: rgba(44, 210, 182, 0.16);
  color: #c9fff6;
}

.preview-wave {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  align-items: end;
  gap: 8px;
  min-height: 72px;
}

.preview-wave-bar {
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(44, 210, 182, 0.98), rgba(114, 169, 255, 0.98));
}

.preview-wave-bar--1 { height: 26%; }
.preview-wave-bar--2 { height: 54%; }
.preview-wave-bar--3 { height: 38%; }
.preview-wave-bar--4 { height: 76%; }
.preview-wave-bar--5 { height: 45%; }
.preview-wave-bar--6 { height: 61%; }
.preview-wave-bar--7 { height: 32%; }

.trust-strip {
  grid-template-columns: repeat(4, 1fr);
  margin-top: 28px;
}

.trust-card {
  padding: 18px;
  background: rgba(255, 255, 255, 0.045);
}

.value-section,
.templates-section,
.business-section,
.demo-shell,
.roadmap-shell,
.faq-section {
  margin-top: 72px;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 26px;
  margin-bottom: 26px;
}

.section-heading h2,
.business-copy h2,
.cta-band h2 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(2rem, 4.2vw, 3.4rem);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.section-heading p,
.business-copy p {
  max-width: 500px;
  margin: 0;
  color: var(--muted);
  line-height: 1.82;
}

.section-heading--tight {
  align-items: end;
}

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

.value-card,
.roadmap-card,
.business-card,
.faq-card {
  padding: 26px;
  background: rgba(255, 255, 255, 0.045);
}

.value-index {
  margin: 0 0 18px;
  color: rgba(44, 210, 182, 0.9);
  font-family: "Sora", sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
}

.value-card h3,
.roadmap-card h3,
.business-card h3,
.faq-card h3 {
  margin: 0 0 12px;
  font-size: 1.48rem;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.value-card p,
.roadmap-card p,
.business-card p,
.faq-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.78;
}

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

.template-card {
  padding: 24px;
  background: rgba(255, 255, 255, 0.045);
  text-align: left;
  color: var(--text);
}

.template-card strong {
  display: block;
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.template-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.72;
}

.template-tag {
  margin-bottom: 14px;
  background: rgba(44, 210, 182, 0.14);
  color: #c9fff6;
  font-size: 0.88rem;
}

.template-card:hover,
.template-card:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.22);
}

.business-section {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 24px;
  align-items: start;
}

.check-list {
  margin: 24px 0 0;
  padding-left: 20px;
  line-height: 1.95;
}

.business-stack {
  display: grid;
  gap: 16px;
}

.beta-notice {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  padding: 12px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  color: var(--muted);
}

.beta-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(44, 210, 182, 0.14);
}

.workspace-grid {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 18px;
}

.card-light {
  padding: 26px;
  background: var(--surface-light);
  color: var(--text-dark);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow-lg);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
}

.panel-head h2 {
  margin: 0;
  font-size: 2rem;
  line-height: 1.06;
  letter-spacing: -0.03em;
}

.form-grid,
.result-grid {
  display: grid;
  gap: 16px;
}

.slider-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.input-block {
  display: grid;
  gap: 10px;
}

.input-block > span {
  color: var(--muted-dark);
}

.upload-block input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.upload-surface,
textarea,
select {
  width: 100%;
  border-radius: 20px;
  border: 1px solid var(--line-dark);
  background: rgba(255, 255, 255, 0.9);
}

.upload-surface {
  min-height: 130px;
  padding: 20px;
  display: grid;
  align-content: center;
  gap: 10px;
  border-style: dashed;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.upload-surface:hover {
  transform: translateY(-2px);
  border-color: rgba(44, 210, 182, 0.44);
  box-shadow: 0 10px 24px rgba(44, 210, 182, 0.1);
}

textarea,
select {
  padding: 16px 18px;
  color: var(--text-dark);
  font-family: inherit;
}

textarea {
  resize: vertical;
  min-height: 156px;
  line-height: 1.7;
}

select {
  appearance: none;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip,
.primary-button,
.ghost-button {
  border: none;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, color 180ms ease;
}

.chip {
  padding: 12px 16px;
  border-radius: 999px;
  background: rgba(11, 21, 33, 0.06);
  color: var(--muted-dark);
  border: 1px solid rgba(11, 21, 33, 0.08);
}

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

.chip--selected {
  background: rgba(44, 210, 182, 0.12);
  color: #0b7268;
  border-color: rgba(44, 210, 182, 0.18);
}

.range-block strong {
  color: #0b7268;
}

.primary-button,
.ghost-button {
  padding: 12px 18px;
  border-radius: 999px;
  font-family: inherit;
  font-weight: 600;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #04111a;
  box-shadow: 0 12px 28px rgba(44, 210, 182, 0.22);
}

.ghost-button {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border: 1px solid var(--line);
}

.card-light .ghost-button {
  background: rgba(11, 21, 33, 0.06);
  color: var(--text-dark);
  border: 1px solid var(--line-dark);
}

.primary-button--link,
.ghost-button--link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.result-summary {
  margin: 0 0 18px;
  line-height: 1.75;
  color: var(--muted-dark);
}

.subpanel {
  padding: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(11, 21, 33, 0.08);
}

.subpanel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.subpanel-head span,
#request-id,
.next-steps {
  color: var(--muted-dark);
}

.tag-board {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  background: rgba(44, 210, 182, 0.1);
  color: #0b7268;
}

.tag-board--large .tag {
  padding: 12px 18px;
}

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

.phrase-card {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(247, 248, 250, 0.96);
  border: 1px solid rgba(11, 21, 33, 0.08);
}

.phrase-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.phrase-contour {
  color: #0b7268;
}

.note-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.note-pill {
  display: inline-flex;
  padding: 8px 10px;
  border-radius: 12px;
  background: rgba(11, 21, 33, 0.06);
  border: 1px solid rgba(11, 21, 33, 0.08);
  color: var(--text-dark);
}

.empty-state {
  min-height: 120px;
  display: grid;
  place-items: center;
  text-align: center;
  color: var(--muted-dark);
  border: 1px dashed rgba(11, 21, 33, 0.14);
  border-radius: 18px;
}

.waveform {
  display: grid;
  grid-template-columns: repeat(20, minmax(0, 1fr));
  align-items: end;
  gap: 8px;
  min-height: 112px;
}

.wave-bar {
  border-radius: 999px 999px 10px 10px;
  background: linear-gradient(180deg, rgba(114, 169, 255, 0.95), rgba(44, 210, 182, 0.95));
  min-height: 12px;
}

.wave-bar--1 { height: 18%; }
.wave-bar--2 { height: 42%; }
.wave-bar--3 { height: 28%; }
.wave-bar--4 { height: 65%; }
.wave-bar--5 { height: 36%; }
.wave-bar--6 { height: 54%; }
.wave-bar--7 { height: 22%; }
.wave-bar--8 { height: 38%; }

.next-steps {
  margin: 0;
  padding-left: 18px;
  line-height: 1.85;
}

.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 72px;
  padding: 28px 30px;
  background: linear-gradient(135deg, rgba(44, 210, 182, 0.18), rgba(114, 169, 255, 0.16));
  border: 1px solid var(--line);
}

.site-footer {
  position: relative;
  z-index: 1;
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
  padding: 0 0 32px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: rgba(232, 239, 245, 0.52);
  font-size: 0.9rem;
}

.is-loading {
  opacity: 0.82;
}

@media (max-width: 1180px) {
  .site-header,
  .hero,
  .business-section,
  .workspace-grid,
  .section-heading,
  .cta-band {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-metrics,
  .trust-strip,
  .value-grid,
  .template-grid,
  .roadmap-grid,
  .faq-grid,
  .slider-grid {
    grid-template-columns: 1fr;
  }

  .site-nav {
    flex-wrap: wrap;
  }
}

@media (max-width: 720px) {
  .page-shell,
  .site-header,
  .site-footer {
    width: min(100% - 20px, 1240px);
  }

  .page-shell {
    padding-top: 24px;
  }

  .hero-copy h1 {
    font-size: clamp(2.4rem, 14vw, 4rem);
  }

  .section-heading h2,
  .business-copy h2,
  .cta-band h2,
  .panel-head h2 {
    font-size: 1.9rem;
  }

  .card-dark,
  .card-light,
  .metric-card,
  .trust-card,
  .value-card,
  .template-card,
  .business-card,
  .roadmap-card,
  .faq-card,
  .cta-band {
    padding: 20px;
    border-radius: 24px;
  }

  .hero-actions,
  .header-actions {
    width: 100%;
  }

  .hero-actions .primary-button,
  .hero-actions .ghost-button,
  .header-actions .ghost-button {
    flex: 1 1 auto;
  }

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