:root {
  color-scheme: light;
  --ink-950: #102333;
  --ink-900: #183044;
  --ink-800: #27465d;
  --ink-700: #3c5c70;
  --ink-600: #567184;
  --ink-500: #728997;
  --surface: #f7f8f5;
  --surface-raised: #ffffff;
  --surface-muted: #edf1ef;
  --surface-blue: #eaf2f4;
  --success: #087e70;
  --success-dark: #05665c;
  --success-soft: #dff3ee;
  --pending: #a65b09;
  --pending-soft: #fff1d6;
  --error: #b63b3b;
  --error-soft: #fce7e5;
  --border: #cfdbdd;
  --border-strong: #a8bcc1;
  --space-1: 0.375rem;
  --space-2: 0.625rem;
  --space-3: 0.875rem;
  --space-4: 1.25rem;
  --space-5: 1.75rem;
  --space-6: 2.5rem;
  --space-7: 4rem;
  --radius-sm: 0.625rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --shadow-sm: 0 8px 24px rgba(16, 35, 51, 0.07);
  --shadow-lg: 0 24px 64px rgba(16, 35, 51, 0.14);
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink-900);
  background:
    linear-gradient(90deg, rgba(16, 35, 51, 0.035) 1px, transparent 1px) 0 0 / 5rem 5rem,
    var(--surface);
  font-family: var(--font-system);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

a {
  color: inherit;
}

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

.page-shell {
  width: min(100% - 2.5rem, 74rem);
  margin-inline: auto;
}

.site-header {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  color: #f7fbfb;
  background: var(--ink-950);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.site-header::before,
.site-header::after {
  position: absolute;
  z-index: -1;
  content: "";
  pointer-events: none;
}

.site-header::before {
  inset: 0;
  background:
    linear-gradient(118deg, transparent 0 64%, rgba(40, 181, 161, 0.12) 64% 65%, transparent 65%),
    radial-gradient(circle at 78% 35%, rgba(40, 181, 161, 0.18), transparent 24rem);
}

.site-header::after {
  top: 1.8rem;
  right: max(1.5rem, calc((100vw - 74rem) / 2));
  width: 8rem;
  height: 8rem;
  border: 1px solid rgba(151, 222, 211, 0.26);
  border-radius: 50%;
  box-shadow:
    0 0 0 1.5rem rgba(151, 222, 211, 0.05),
    0 0 0 3rem rgba(151, 222, 211, 0.025);
}

.hero__content {
  padding-block: clamp(4rem, 8vw, 7rem) clamp(3.5rem, 7vw, 6rem);
}

.eyebrow {
  margin: 0 0 var(--space-2);
  color: var(--success-dark);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #91ddcf;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1,
h2,
h3 {
  margin-top: 0;
  color: var(--ink-950);
  line-height: 1.16;
}

h1 {
  max-width: 11em;
  margin-bottom: var(--space-4);
  color: #ffffff;
  font-size: clamp(2.55rem, 7vw, 5.5rem);
  font-weight: 760;
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  letter-spacing: -0.035em;
}

h3 {
  margin-bottom: var(--space-2);
  font-size: 1.05rem;
}

.hero__positioning {
  max-width: 43rem;
  margin: 0 0 var(--space-4);
  color: #d9e5e8;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.safety-note {
  max-width: 48rem;
  margin: 0;
  padding-left: var(--space-3);
  color: #b9ccd2;
  border-left: 3px solid #42b8a7;
  font-size: 0.9rem;
}

.hero__actions,
.demo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.button {
  display: inline-flex;
  min-height: 2.875rem;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1.15rem;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 750;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.button:hover:not(:disabled) {
  transform: translateY(-2px);
}

.button:focus-visible,
a:focus-visible,
.review-heading:focus-visible {
  outline: 3px solid #168c7e;
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.button--primary {
  color: #ffffff;
  background: var(--success);
  box-shadow: 0 10px 24px rgba(8, 126, 112, 0.25);
}

.button--primary:hover:not(:disabled) {
  background: var(--success-dark);
  box-shadow: 0 14px 30px rgba(8, 126, 112, 0.3);
}

.button--secondary {
  color: inherit;
  background: transparent;
  border-color: currentColor;
}

.hero .button--secondary {
  color: #e3edef;
  border-color: rgba(227, 237, 239, 0.45);
}

.button--quiet {
  color: var(--ink-800);
  background: var(--surface-raised);
  border-color: var(--border-strong);
}

main.page-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(19rem, 0.58fr);
  gap: var(--space-5);
  padding-block: var(--space-7);
}

.section {
  min-width: 0;
  padding: clamp(1.35rem, 3vw, 2.25rem);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.section__heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border);
}

.section__heading .eyebrow {
  margin: 0;
  writing-mode: vertical-rl;
}

.demo-section,
.evidence {
  grid-column: 1 / -1;
}

.demo-section {
  position: relative;
  margin-top: -6rem;
  background: var(--surface-raised);
  border-top: 4px solid var(--success);
  box-shadow: var(--shadow-lg);
}

.demo-layout {
  display: grid;
  grid-template-columns: minmax(15rem, 0.8fr) minmax(20rem, 1.2fr);
  gap: var(--space-5);
  align-items: start;
}

.demo-card {
  margin: 0;
  overflow: hidden;
  background: var(--ink-950);
  border: 1px solid var(--ink-800);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 40px rgba(16, 35, 51, 0.18);
}

.demo-card img {
  width: 100%;
  aspect-ratio: 18 / 11;
  object-fit: cover;
}

.demo-card figcaption {
  padding: var(--space-3) var(--space-4);
  color: #c9d7da;
  font-size: 0.8rem;
}

.demo-panel {
  min-width: 0;
  padding: var(--space-5);
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.demo-panel > :first-child,
.chat-bubble > :first-child {
  margin-top: 0;
}

.demo-panel > :last-child,
.chat-bubble > :last-child {
  margin-bottom: 0;
}

.demo-statusbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  color: var(--ink-600);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status-pill,
.field-chip,
.value-state {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  width: fit-content;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 750;
}

.status-pill {
  padding: 0.35rem 0.7rem;
  color: var(--pending);
  background: var(--pending-soft);
}

.status-pill::before {
  width: 0.45rem;
  height: 0.45rem;
  content: "";
  background: currentColor;
  border-radius: 50%;
}

.status-pill--success {
  color: var(--success-dark);
  background: var(--success-soft);
}

.chat-stack {
  display: grid;
  gap: var(--space-3);
}

.chat-bubble {
  max-width: 92%;
  padding: var(--space-3) var(--space-4);
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 0.25rem var(--radius-md) var(--radius-md) var(--radius-md);
  box-shadow: 0 5px 16px rgba(16, 35, 51, 0.06);
  animation: reveal-up 260ms ease both;
}

.chat-bubble--user {
  justify-self: end;
  color: #ffffff;
  background: var(--ink-800);
  border-color: var(--ink-800);
  border-radius: var(--radius-md) 0.25rem var(--radius-md) var(--radius-md);
}

.chat-label {
  display: block;
  margin-bottom: var(--space-1);
  color: var(--success-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.chat-bubble--user .chat-label {
  color: #9be0d3;
}

.review-heading {
  margin: var(--space-5) 0 var(--space-3);
  font-size: 1.25rem;
}

.fake-input {
  display: flex;
  min-height: 3rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-3);
  padding: 0.75rem 0.9rem;
  color: var(--ink-700);
  background: var(--surface-raised);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
}

.fake-input__tag {
  flex: 0 0 auto;
  color: var(--ink-700);
  font-size: 0.75rem;
  font-weight: 800;
}

.record-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  margin: 0;
}

.record-item {
  min-width: 0;
  padding: var(--space-3);
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.record-item dt {
  margin-bottom: 0.15rem;
  color: var(--ink-600);
  font-size: 0.76rem;
  font-weight: 700;
}

.record-item dd {
  margin: 0;
  color: var(--ink-950);
  font-weight: 760;
}

.record-item--pending {
  background: var(--pending-soft);
  border-color: #e2bd7d;
}

.record-item--pending dd {
  min-height: 1.65em;
  margin-bottom: var(--space-1);
  border-bottom: 1px dashed #bd873f;
}

.record-item__status {
  display: block;
  color: var(--pending);
  font-size: 0.75rem;
  font-weight: 750;
}

.reconfirm-note,
.completion-note {
  margin: var(--space-4) 0 0;
  padding: var(--space-3) var(--space-4);
  border-left: 4px solid var(--pending);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--pending-soft);
}

.completion-note {
  border-left-color: var(--success);
  background: var(--success-soft);
}

.processing-list {
  display: grid;
  gap: var(--space-2);
  margin: var(--space-5) 0 0;
  padding: 0;
  list-style: none;
}

.processing-step {
  display: grid;
  grid-template-columns: 1.7rem 1fr auto;
  gap: var(--space-3);
  align-items: center;
  min-height: 3rem;
  padding: var(--space-2) var(--space-3);
  color: var(--ink-600);
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.processing-step::before {
  display: grid;
  width: 1.5rem;
  height: 1.5rem;
  place-items: center;
  content: "·";
  color: var(--ink-600);
  background: var(--surface-muted);
  border-radius: 50%;
  font-weight: 900;
}

.processing-step[data-progress="active"] {
  color: var(--ink-950);
  border-color: var(--pending);
  box-shadow: 0 0 0 3px var(--pending-soft);
}

.processing-step[data-progress="active"]::before {
  content: "";
  background: var(--pending);
  animation: status-pulse 800ms ease-in-out infinite;
}

.processing-step[data-progress="done"] {
  color: var(--success-dark);
  background: var(--success-soft);
  border-color: #9bcec5;
}

.processing-step[data-progress="done"]::before {
  content: "✓";
  color: #ffffff;
  background: var(--success);
}

.processing-step__state {
  font-size: 0.75rem;
  font-weight: 750;
}

.workflow-list,
.boundary-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.workflow-list {
  counter-reset: workflow;
}

.workflow-list li {
  position: relative;
  min-height: 3.5rem;
  padding: 0 0 var(--space-4) 3.2rem;
  counter-increment: workflow;
}

.workflow-list li:not(:last-child)::after {
  position: absolute;
  top: 2.25rem;
  bottom: 0.25rem;
  left: 1.15rem;
  width: 1px;
  content: "";
  background: var(--border-strong);
}

.workflow-list li::before {
  position: absolute;
  top: -0.2rem;
  left: 0;
  display: grid;
  width: 2.3rem;
  height: 2.3rem;
  place-items: center;
  content: counter(workflow, decimal-leading-zero);
  color: var(--success-dark);
  background: var(--success-soft);
  border: 1px solid #a8d5cd;
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 850;
}

.field-groups {
  display: grid;
  gap: var(--space-3);
}

.field-group {
  padding: var(--space-4);
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.field-group__chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.field-chip {
  padding: 0.38rem 0.65rem;
  color: var(--ink-800);
  background: var(--surface-raised);
  border: 1px solid var(--border);
}

.boundary-list {
  display: grid;
  gap: var(--space-3);
}

.boundary-list li {
  position: relative;
  padding: var(--space-3) var(--space-3) var(--space-3) 2.7rem;
  background: var(--surface-muted);
  border-left: 3px solid var(--ink-700);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.boundary-list li::before {
  position: absolute;
  top: 0.83rem;
  left: 0.85rem;
  content: "—";
  color: var(--error);
  font-weight: 900;
}

.fallback-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.fallback-card {
  min-width: 0;
  padding: var(--space-4);
  background: linear-gradient(145deg, #ffffff, var(--error-soft));
  border: 1px solid #e6c5c2;
  border-radius: var(--radius-md);
}

.fallback-card__number {
  display: block;
  margin-bottom: var(--space-3);
  color: var(--error);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.fallback-card p {
  margin: 0;
}

.evidence {
  color: #dce8ea;
  background: var(--ink-900);
  border-color: var(--ink-800);
}

.evidence h2 {
  color: #ffffff;
}

.evidence .section__heading {
  border-color: rgba(255, 255, 255, 0.18);
}

.evidence .eyebrow {
  color: #91ddcf;
}

.evidence > p {
  max-width: 52rem;
  margin-bottom: 0;
}

.site-footer {
  padding-block: var(--space-5);
  color: #c9d7da;
  background: var(--ink-950);
  border-top: 1px solid var(--ink-800);
  font-size: 0.85rem;
}

.site-footer p {
  margin: 0;
}

noscript {
  position: fixed;
  right: var(--space-4);
  bottom: var(--space-4);
  z-index: 10;
  max-width: 28rem;
  padding: var(--space-4);
  color: #ffffff;
  background: var(--error);
  border: 2px solid #ffffff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.error-page {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding-block: var(--space-6);
}

.error-card {
  width: min(100%, 40rem);
  border-top: 5px solid var(--error);
  box-shadow: var(--shadow-lg);
}

.error-card h1 {
  color: var(--ink-950);
  font-size: clamp(2.5rem, 7vw, 5rem);
}

.error-card .button {
  margin-top: var(--space-4);
}

@keyframes reveal-up {
  from {
    opacity: 0;
    transform: translateY(0.5rem);
  }
}

@keyframes status-pulse {
  50% {
    transform: scale(0.66);
    opacity: 0.62;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100% - 1.25rem, 44rem);
  }

  .site-header::after {
    top: 2rem;
    right: -3.5rem;
  }

  .hero__content {
    padding-block: 3.5rem 5.5rem;
  }

  h1 {
    font-size: clamp(2.5rem, 14vw, 4.2rem);
  }

  main.page-shell,
  .demo-layout,
  .record-grid,
  .fallback-list {
    grid-template-columns: minmax(0, 1fr);
  }

  main.page-shell {
    gap: var(--space-4);
    padding-block: var(--space-5);
  }

  .demo-section {
    grid-column: auto;
    margin-top: -4rem;
  }

  .demo-card,
  .demo-panel,
  .section {
    min-width: 0;
  }

  .section {
    padding: var(--space-4);
    border-radius: var(--radius-md);
  }

  .section__heading {
    align-items: start;
  }

  .section__heading .eyebrow {
    writing-mode: horizontal-tb;
  }

  .demo-card {
    order: 0;
  }

  .demo-panel {
    order: 1;
    padding: var(--space-4);
  }

  .hero__actions,
  .demo-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
    min-height: 3rem;
  }

  .chat-bubble {
    max-width: 100%;
  }

  .fake-input {
    align-items: flex-start;
    flex-direction: column;
  }

  .processing-step {
    grid-template-columns: 1.7rem minmax(0, 1fr);
  }

  .processing-step__state {
    grid-column: 2;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition: none !important;
  }
}