:root {
  color-scheme: light;
  --ink: #0d0d0d;
  --muted: #5d5d5d;
  --quiet: #8a8a8a;
  --disabled: #b4b4b4;
  --paper: #ffffff;
  --sidebar: #f9f9f9;
  --panel: #ffffff;
  --elevated: #f7f7f8;
  --hover: #ececec;
  --selected: #e8e8e8;
  --line: #e5e5e5;
  --accent: #0d0d0d;
  --accent-hover: #323232;
  --soft-accent: #f7f7f8;
  --amber: #e2a000;
  --red: #d00e17;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.08);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.5;
}
body:not([data-auth-checked="yes"]) .app-shell {
  visibility: hidden;
}
a { color: inherit; }
.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 274px minmax(0, 1fr);
  background: var(--paper);
}
body[data-auth-gate] .app-shell {
  grid-template-columns: minmax(0, 1fr);
}
body[data-auth-gate] .sidebar,
body[data-auth-gate] .context-panel,
body[data-auth-gate] .context-scrim {
  display: none;
}
.sidebar {
  position: sticky;
  top: 0;
  z-index: 6;
  height: 100vh;
  padding: 16px 12px;
  border-right: 1px solid var(--line);
  background: var(--sidebar);
  overflow-y: auto;
}
.brand h1 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.15;
  letter-spacing: 0;
}
.brand p {
  margin: 6px 0 0;
  color: var(--muted);
  font-weight: 650;
}
.role-switcher {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  margin-top: 16px;
}
.role-pill {
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  color: var(--muted);
  font: inherit;
  font-weight: 700;
}
.role-pill[aria-pressed="true"] {
  color: var(--ink);
  border-color: #d3d3d3;
  background: var(--selected);
}
.nav {
  display: grid;
  gap: 2px;
  margin-top: 14px;
}
.nav-caption,
.nav-section-label {
  margin: 16px 8px 6px;
  color: var(--quiet);
  font-size: 0.78rem;
  font-weight: 780;
}
.nav-role-group,
.nav-bottom {
  display: grid;
  gap: 2px;
}
body[data-role="buyer"] [data-role-group="supplier_factory"],
body[data-role="supplier_factory"] [data-role-group="buyer"],
body[data-role="buyer"] [data-role-panel="supplier_factory"],
body[data-role="supplier_factory"] [data-role-panel="buyer"],
body[data-role="buyer"] [data-role-message="supplier_factory"],
body[data-role="supplier_factory"] [data-role-message="buyer"],
body[data-role="buyer"] [data-role-action="supplier_factory"],
body[data-role="supplier_factory"] [data-role-action="buyer"],
body[data-role="buyer"] [data-role-cta="supplier_factory"],
body[data-role="supplier_factory"] [data-role-cta="buyer"] {
  display: none;
}
.advanced-nav {
  margin-top: 12px;
  border-top: 1px solid var(--line);
  padding-top: 10px;
}
.advanced-nav summary {
  cursor: pointer;
  padding: 8px 10px;
  color: var(--muted);
  font-weight: 760;
}
.content-more {
  grid-column: 1 / -1;
  margin-top: 4px;
  border-top: 1px solid var(--line);
  padding-top: 8px;
}
.content-more summary {
  width: fit-content;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--elevated);
}
.nav a {
  display: block;
  min-height: 36px;
  padding: 8px 10px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 650;
}
.nav a[aria-current="page"],
.nav a:hover,
.nav a:focus-visible {
  color: var(--ink);
  background: var(--hover);
  outline: none;
}
.nav-intent {
  display: block;
  color: var(--quiet);
  font-size: 0.75rem;
  font-weight: 520;
}
.main {
  min-width: 0;
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 3;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: start;
  padding: 16px clamp(18px, 4vw, 58px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
}
.topbar h2 {
  margin: 0;
  font-size: clamp(1.25rem, 2.2vw, 2rem);
  line-height: 1.12;
  letter-spacing: 0;
}
.topbar p {
  margin: 7px 0 0;
  color: var(--muted);
  max-width: 75ch;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}
.auth-controls {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.account-chip {
  display: inline-grid;
  gap: 2px;
  min-height: 38px;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}
.account-chip strong,
.account-chip small {
  max-width: 24ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.account-chip small {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 720;
}
.language-switcher {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--muted);
  padding: 0 9px;
  font-size: 0.84rem;
  font-weight: 720;
}
.language-switcher select {
  min-height: 28px;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-weight: 760;
}
.mobile-menu {
  display: none;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
}
.button:hover,
.button:focus-visible {
  background: var(--hover);
  outline: none;
}
.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}
.button.primary:hover,
.button.primary:focus-visible {
  background: var(--accent-hover);
}
.button[aria-disabled="true"] {
  color: var(--red);
  border-color: #f1c3c5;
  background: #fff7f7;
  pointer-events: none;
}
.image-upload-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  font-weight: 700;
  cursor: pointer;
}
.image-upload-button:hover,
.image-upload-button:focus-within {
  background: var(--hover);
}
.image-upload-button svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}
.image-upload-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.image-upload-status {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 680;
}
.content {
  width: min(980px, calc(100% - 36px));
  margin: 0 auto;
  padding: 22px 0 128px;
}
.public-auth-content {
  min-height: calc(100vh - 140px);
  display: grid;
  align-items: center;
}
.public-auth-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: 28px;
  align-items: start;
}
.public-auth-card h2 {
  margin: 0;
  max-width: 11ch;
  font-size: clamp(2.4rem, 7vw, 5rem);
  line-height: 0.98;
  letter-spacing: 0;
}
.public-auth-card p {
  max-width: 62ch;
  color: var(--muted);
}
.public-auth-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.auth-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  padding: 14px;
  box-shadow: var(--shadow);
}
.auth-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  margin-bottom: 12px;
}
.auth-tabs button,
.auth-card button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-weight: 760;
}
.auth-tabs button[aria-selected="true"] {
  border-color: var(--accent);
  background: var(--selected);
}
.auth-card form {
  display: grid;
  gap: 10px;
}
.auth-card label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 720;
}
.auth-card input,
.auth-card select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
  padding: 0 10px;
}
.auth-card fieldset {
  display: grid;
  gap: 8px;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
}
.auth-card fieldset label {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--ink);
}
.auth-card fieldset input {
  width: auto;
  min-height: 0;
}
.form-message {
  min-height: 20px;
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.9rem;
}
.form-message.error {
  color: var(--red);
}
.role-panel {
  margin-bottom: 22px;
  padding: 12px 0 18px;
  border-bottom: 1px solid var(--line);
}
.role-panel h3 {
  margin: 0;
  font-size: clamp(1.7rem, 4.2vw, 3.4rem);
  line-height: 1.02;
  letter-spacing: 0;
}
.role-panel p {
  max-width: 68ch;
  margin: 12px 0 0;
  color: var(--muted);
}
.role-panel .quick-actions {
  margin-top: 16px;
}
.ai-thread {
  display: grid;
  gap: 14px;
  margin-bottom: 22px;
}
.message {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--selected);
  color: var(--ink);
  font-weight: 850;
}
.message-body {
  padding: 2px 0 0;
}
.message-body p {
  margin: 0;
}
.quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.artifact-rail {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 0 0 18px;
}
.artifact-card {
  min-height: 92px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  text-align: left;
  font: inherit;
}
.artifact-card:hover,
.artifact-card:focus-visible {
  border-color: #d3d3d3;
  background: var(--selected);
  outline: none;
}
.artifact-card span {
  display: block;
  color: var(--quiet);
  font-size: 0.78rem;
  font-weight: 760;
}
.artifact-card strong {
  display: block;
  margin-top: 4px;
  overflow-wrap: anywhere;
}
.artifact-card small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
}
.composer {
  position: sticky;
  bottom: 0;
  z-index: 4;
  width: min(980px, calc(100% - 36px));
  margin: 0 auto 16px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow);
}
.composer textarea {
  width: 100%;
  min-height: 54px;
  max-height: 180px;
  resize: vertical;
  border: 0;
  outline: none;
  color: var(--ink);
  background: transparent;
  font: inherit;
}
.composer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 8px;
}
.send-button {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}
.send-button:hover,
.send-button:focus-visible {
  background: var(--accent-hover);
}
.context-panel {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 8;
  height: 100vh;
  width: min(380px, 100vw);
  padding: 16px;
  border-left: 1px solid var(--line);
  background: var(--sidebar);
  box-shadow: var(--shadow);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 180ms ease;
}
body.context-open .context-panel {
  transform: translateX(0);
}
.context-scrim {
  position: fixed;
  inset: 0;
  z-index: 7;
  border: 0;
  background: rgba(13, 13, 13, 0.14);
  opacity: 0;
  pointer-events: none;
}
body.context-open .context-scrim {
  opacity: 1;
  pointer-events: auto;
}
.context-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}
.context-panel h2 {
  margin: 0;
  font-size: 1rem;
}
.context-panel p {
  margin: 8px 0 0;
  color: var(--muted);
}
.context-list {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}
.context-item {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  text-align: left;
  font: inherit;
}
.context-item:hover,
.context-item:focus-visible {
  border-color: #d3d3d3;
  background: var(--selected);
  outline: none;
}
.context-item span {
  display: block;
  color: var(--quiet);
  font-size: 0.78rem;
  font-weight: 750;
}
.context-item strong {
  display: block;
  margin-top: 3px;
  overflow-wrap: anywhere;
}
.metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.metric,
.section {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.metric {
  min-height: 0;
  padding: 8px 10px;
  border-radius: 999px;
}
.metric span,
.field span {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 720;
}
.metric strong,
.field strong {
  display: block;
  margin-top: 4px;
  overflow-wrap: anywhere;
}
.section-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.section {
  padding: 16px;
}
.section.wide {
  grid-column: 1 / -1;
}
.section h3 {
  margin: 0 0 12px;
  font-size: 1.05rem;
  line-height: 1.25;
}
.customer-home {
  display: grid;
  gap: 26px;
  padding: clamp(28px, 7vw, 76px) 0 36px;
}
.home-panel {
  display: grid;
  gap: 20px;
  max-width: 760px;
  margin: 0 auto;
}
.home-kicker {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 760;
}
.home-panel h2 {
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 5.3rem);
  line-height: 0.98;
  letter-spacing: 0;
}
.home-composer {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
}
.home-composer textarea {
  width: 100%;
  min-height: 118px;
  resize: vertical;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--ink);
  font: inherit;
}
.home-composer-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.home-actions,
.home-examples {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.home-examples {
  color: var(--muted);
}
.home-example {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  background: var(--elevated);
  color: var(--muted);
  font-size: 0.9rem;
}
.home-context {
  display: grid;
  gap: 10px;
  max-width: 760px;
  margin: 0 auto;
}
.home-context-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.home-note {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--elevated);
}
.home-note span {
  display: block;
  color: var(--quiet);
  font-size: 0.8rem;
  font-weight: 760;
}
.home-note strong {
  display: block;
  margin-top: 4px;
}
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 12px;
}
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--elevated);
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 720;
}
.badge.ready { color: var(--ink); border-color: #d3d3d3; background: var(--selected); }
.badge.pending { color: #7a5700; border-color: #f0d98c; background: #fff8df; }
.badge.locked { color: var(--red); border-color: #f1c3c5; background: #fff7f7; }
.badge.info { color: #323232; border-color: var(--line); background: var(--elevated); }
.fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.field {
  border-top: 1px solid var(--line);
  padding-top: 8px;
}
.list {
  display: grid;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.list li {
  border-top: 1px solid var(--line);
  padding-top: 8px;
}
.list li:first-child {
  border-top: 0;
  padding-top: 0;
}
.table-wrap {
  overflow-x: auto;
}
.subheading {
  margin: 16px 0 6px;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--muted);
}
.public-trust-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}
.public-trust-links a {
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
}
.public-trust-links a:hover {
  color: var(--text);
}
.pricing-mini-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.pricing-mini-grid article {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: var(--surface);
}
.pricing-mini-grid h3 {
  margin: 0 0 8px;
}
.pricing-mini-grid p {
  color: var(--muted);
  min-height: 52px;
}
table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}
th,
td {
  border-top: 1px solid var(--line);
  padding: 9px 10px;
  text-align: left;
  vertical-align: top;
}
th {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0;
}
@media (max-width: 980px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(320px, 88vw);
    height: 100vh;
    transform: translateX(-100%);
    transition: transform 180ms ease;
    border-bottom: 0;
  }
  body.nav-open .sidebar {
    transform: translateX(0);
  }
  body.nav-open .context-scrim {
    opacity: 1;
    pointer-events: auto;
  }
  .nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .topbar,
  .public-auth-card,
  .pricing-mini-grid,
  .section-grid {
    grid-template-columns: 1fr;
  }
  .actions { justify-content: flex-start; }
  .mobile-menu { display: inline-flex; }
  .artifact-rail { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 620px) {
  .content { width: min(100% - 24px, 1240px); }
  .fields,
  .home-context-grid,
  .nav,
  .role-switcher { grid-template-columns: 1fr; }
  .button { width: 100%; }
  .image-upload-button { width: 100%; }
  .message { grid-template-columns: 1fr; }
  .artifact-rail { grid-template-columns: 1fr; }
  .composer {
    position: fixed;
    left: 10px;
    right: 10px;
    width: auto;
    margin: 0 0 10px;
  }
  .composer-row { display: grid; }
}