:root {
  --ink: #18211c;
  --muted: #617069;
  --paper: #f2f0e9;
  --white: #fff;
  --line: #d7deda;
  --blue: #006b8f;
  --blue-dark: #004b68;
  --blue-soft: #e8f4f8;
  --green: #176246;
  --green-soft: #e8f3ed;
  --red: #a13b34;
  --red-soft: #fbe9e6;
  --yellow: #8a6717;
  --yellow-soft: #fff4d4;
  --shadow: 0 20px 60px rgba(24, 33, 28, 0.13);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 7%, rgba(0, 107, 143, 0.1), transparent 28rem),
    var(--paper);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.55;
}

.site-header {
  color: #e9f5f0;
  background: #143d31;
}

.site-header > div {
  display: flex;
  justify-content: space-between;
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
  padding: 11px 0;
  font-size: 0.8rem;
}

.site-header a {
  color: inherit;
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 50px;
  align-items: end;
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
  padding: 58px 0 34px;
}

.eyebrow {
  margin: 0 0 7px;
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.14em;
}

.hero h1,
.tutorial h2,
.advanced h2,
.review-screen h2 {
  margin: 0;
  font-family: Georgia, "Songti SC", serif;
  font-weight: 500;
  line-height: 1.12;
}

.hero h1 {
  max-width: 850px;
  font-size: clamp(2.5rem, 6vw, 4.8rem);
  letter-spacing: -0.04em;
}

.hero p:not(.eyebrow) {
  max-width: 800px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.hero code {
  color: var(--blue-dark);
  font-family: inherit;
  font-weight: 800;
}

.hero aside {
  display: grid;
  gap: 5px;
  padding: 20px 22px;
  color: #eaf4f0;
  background: #173f33;
  border-radius: 13px;
}

.hero aside span {
  color: #bbd3c8;
  font-size: 0.82rem;
}

.hero aside strong {
  margin-top: 8px;
  color: #ffd4ce;
}

main {
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto 70px;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.8rem;
}

.mark {
  display: inline-grid;
  place-items: center;
  width: 25px;
  height: 25px;
  margin-right: 6px;
  color: #fff;
  border-radius: 50%;
  font-size: 0.65rem;
  font-style: normal;
  font-weight: 850;
}

.mark--blue {
  background: var(--blue);
}

.mark--green {
  background: var(--green);
}

.mark--red {
  background: var(--red);
}

.ticket-window {
  overflow: hidden;
  background: #fff;
  border: 1px solid #cbd5d0;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.ticket-top {
  display: flex;
  min-height: 70px;
  color: #fff;
  background: var(--blue);
}

.schwab-logo {
  display: flex;
  align-items: center;
  padding: 0 27px;
  font-family: Georgia, serif;
  font-size: 1.14rem;
  background: var(--blue-dark);
}

.ticket-top nav {
  display: flex;
  overflow-x: auto;
}

.ticket-top nav span {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 126px;
  padding: 0 18px;
  border-right: 1px solid rgba(255, 255, 255, 0.17);
  font-size: 0.82rem;
  font-weight: 750;
}

.ticket-top nav span.active {
  background: rgba(0, 0, 0, 0.14);
}

.ticket-top nav small {
  color: #c8e4ee;
}

.ticket-body {
  padding: 25px;
  background: #f6f8f7;
}

.ticket-title {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
}

.ticket-title h2 {
  margin: 0;
  font-size: 1.6rem;
}

.ticket-title p {
  margin: 2px 0 0;
  color: var(--green);
  font-size: 0.85rem;
  font-weight: 750;
}

.readonly,
.state {
  color: var(--green);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.05em;
}

.progress {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 22px 0 16px;
  padding: 0;
  list-style: none;
}

.progress li {
  position: relative;
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 12px 18px;
  color: #77847e;
  background: #e8ecea;
  border-right: 2px solid #f6f8f7;
}

.progress li.current {
  color: #fff;
  background: var(--blue);
}

.progress b {
  display: grid;
  place-items: center;
  width: 27px;
  height: 27px;
  background: rgba(255, 255, 255, 0.22);
  border: 1px solid currentColor;
  border-radius: 50%;
}

.progress span,
.progress small {
  display: block;
}

.progress small {
  font-size: 0.68rem;
}

.account-strip {
  display: grid;
  grid-template-columns: 1fr 1fr 0.8fr auto;
  gap: 18px;
  align-items: center;
  padding: 15px 17px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.account-strip > div,
.field-label {
  display: flex;
  flex-direction: column;
}

.field-label {
  color: #34443c;
  font-size: 0.76rem;
  font-weight: 800;
}

.field-label small {
  color: var(--green);
  font-size: 0.69rem;
}

.account-strip strong {
  margin-top: 5px;
  font-size: 0.84rem;
}

.private {
  color: #68766f;
}

button {
  padding: 8px 13px;
  color: var(--blue-dark);
  background: #e3f1f5;
  border: 1px solid #b9d7e1;
  border-radius: 4px;
  font: inherit;
  font-size: 0.75rem;
  font-weight: 800;
}

button small {
  display: block;
  color: var(--green);
  font-size: 0.65rem;
}

.ticket-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 16px;
  margin-top: 16px;
}

.ticket-main {
  min-width: 0;
}

.entry-card,
.order-card,
.explain-panel {
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.symbol-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.symbol-row label,
.order-form label {
  display: grid;
  gap: 6px;
}

.input-value {
  min-height: 42px;
  padding: 9px 11px;
  color: #24332c;
  background: #fff;
  border: 1px solid #aebbb5;
  border-radius: 4px;
  font-size: 0.83rem;
}

.input-value.empty {
  color: #7c8782;
  background: #fafafa;
}

.identity-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  margin-top: 15px;
  padding: 12px 14px;
  color: #fff;
  background: var(--blue-dark);
  border-radius: 6px;
}

.identity-row div {
  display: grid;
}

.identity-row div span {
  color: #c8e2ec;
  font-size: 0.72rem;
}

.market-closed {
  padding: 5px 8px;
  color: #ffd8d2;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 850;
}

.market-closed small {
  display: block;
}

.quote-grid {
  display: grid;
  grid-template-columns: 1.25fr repeat(2, 1fr);
  gap: 1px;
  margin-top: 12px;
  background: #dde4e0;
  border: 1px solid #dde4e0;
}

.quote-grid > div {
  display: grid;
  gap: 6px;
  min-height: 82px;
  padding: 12px;
  background: #f7f9f8;
}

.quote-primary {
  grid-row: span 2;
  align-content: center;
}

.quote-primary strong {
  font-size: 1.55rem;
}

.negative {
  color: var(--red);
}

.data-time {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.7rem;
}

.order-card {
  margin-top: 14px;
}

.order-card > header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 15px;
}

.order-card h3,
.explain-panel h3 {
  margin: 0;
  font-size: 0.96rem;
}

.order-card h3 span {
  display: block;
  color: var(--green);
  font-size: 0.72rem;
}

.order-form {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 6px;
}

.segmented span {
  padding: 5px 8px;
  color: #5b6862;
  background: #eef1ef;
  border: 1px solid #d2d8d5;
  text-align: center;
  font-size: 0.72rem;
}

.segmented span.selected {
  color: #fff;
  background: var(--blue);
  border-color: var(--blue);
}

.segmented small {
  display: block;
}

.estimate {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 20px;
  margin-top: 16px;
  padding: 13px 14px;
  background: var(--blue-soft);
  border-radius: 6px;
}

.estimate strong {
  font-size: 1.15rem;
}

.estimate p {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--muted);
  font-size: 0.7rem;
}

details {
  margin-top: 12px;
  padding: 10px 12px;
  background: #f6f8f7;
  border: 1px solid #e0e5e2;
  border-radius: 5px;
}

details summary {
  color: var(--blue-dark);
  font-size: 0.78rem;
  font-weight: 800;
  cursor: pointer;
}

details summary small {
  color: var(--green);
}

details p {
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 0.75rem;
}

.real-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.real-actions .spacer {
  flex: 1;
}

.real-actions button.review {
  color: #fff;
  background: var(--blue);
  border-color: var(--blue);
}

.real-actions button.review small {
  color: #d4eaf1;
}

.explain-panel {
  align-self: start;
  position: sticky;
  top: 15px;
}

.explain-panel ol {
  display: grid;
  gap: 0;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: note;
}

.explain-panel li {
  display: grid;
  gap: 3px;
  padding: 10px 0;
  border-bottom: 1px solid #e4e7e5;
  counter-increment: note;
}

.explain-panel li::before {
  content: counter(note, decimal-leading-zero);
  color: var(--blue);
  font-size: 0.66rem;
  font-weight: 850;
}

.explain-panel li b {
  font-size: 0.78rem;
}

.explain-panel li span {
  color: var(--muted);
  font-size: 0.74rem;
}

.tutorial,
.advanced,
.review-screen,
.final-warning {
  margin-top: 50px;
}

.tutorial > header {
  max-width: 840px;
  margin-bottom: 20px;
}

.tutorial h2,
.advanced h2,
.review-screen h2 {
  font-size: clamp(1.8rem, 4vw, 2.7rem);
}

.tutorial > header > p:last-child {
  color: var(--muted);
}

.lesson-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.lesson-grid article {
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.lesson-grid article > span {
  color: var(--blue);
  font-size: 0.7rem;
  font-weight: 850;
}

.lesson-grid h3 {
  margin: 12px 0 7px;
}

.lesson-grid p,
.lesson-grid small {
  display: block;
  margin: 0;
}

.lesson-grid p {
  font-size: 0.84rem;
}

.lesson-grid small {
  margin-top: 7px;
  color: var(--muted);
}

.advanced {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 42px;
  padding: 30px;
  background: var(--yellow-soft);
  border: 1px solid #ead898;
  border-radius: 14px;
}

.advanced ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.advanced li {
  display: grid;
  padding: 10px 0;
  border-bottom: 1px solid #eadfab;
}

.advanced li span {
  color: #6d6248;
  font-size: 0.78rem;
}

.review-screen {
  display: grid;
  grid-template-columns: 115px minmax(0, 1fr);
  gap: 28px;
  padding: 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.stop-sign {
  display: grid;
  place-items: center;
  width: 100px;
  height: 100px;
  color: #fff;
  background: var(--red);
  clip-path: polygon(29% 0, 71% 0, 100% 29%, 100% 71%, 71% 100%, 29% 100%, 0 71%, 0 29%);
  font-weight: 900;
  letter-spacing: 0.08em;
}

.review-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 18px;
}

.review-list span {
  display: grid;
  padding: 11px 12px;
  background: #f2f5f3;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 800;
}

.review-list small {
  color: var(--green);
}

.review-buttons {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}

.review-buttons button:disabled {
  color: #fff;
  background: var(--red);
  border-color: var(--red);
  cursor: not-allowed;
  opacity: 0.58;
}

.review-buttons button:disabled small {
  color: #ffe2dd;
}

.final-warning {
  padding: 19px 22px;
  color: #75382f;
  background: var(--red-soft);
  border: 1px solid #edc6c0;
  border-radius: 10px;
}

.final-warning p {
  margin: 5px 0 0;
}

footer {
  padding: 28px 20px 40px;
  color: var(--muted);
  font-size: 0.78rem;
  text-align: center;
}

@media (max-width: 980px) {
  .hero,
  .advanced {
    grid-template-columns: 1fr;
  }

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

  .explain-panel {
    position: static;
  }

  .explain-panel ol {
    grid-template-columns: 1fr 1fr;
    gap: 0 24px;
  }

  .account-strip {
    grid-template-columns: 1fr 1fr;
  }

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

@media (max-width: 640px) {
  .site-header > div,
  .hero,
  main {
    width: min(100% - 20px, 1240px);
  }

  .site-header span {
    display: none;
  }

  .hero {
    padding-top: 42px;
  }

  .ticket-body {
    padding: 14px 10px;
  }

  .ticket-title,
  .identity-row,
  .order-card > header {
    display: grid;
  }

  .ticket-top {
    display: block;
  }

  .schwab-logo {
    min-height: 48px;
  }

  .ticket-top nav span {
    min-width: 96px;
    padding: 0 12px;
    min-height: 54px;
  }

  .progress li {
    display: grid;
    justify-items: center;
    padding: 9px 4px;
    text-align: center;
  }

  .account-strip,
  .symbol-row,
  .quote-grid,
  .order-form,
  .lesson-grid,
  .advanced ul,
  .review-list {
    grid-template-columns: 1fr;
  }

  .quote-primary {
    grid-row: auto;
  }

  .real-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .real-actions .spacer {
    display: none;
  }

  .real-actions button.review {
    grid-column: 1 / -1;
  }

  .explain-panel ol {
    grid-template-columns: 1fr;
  }

  .review-screen {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .review-buttons {
    display: grid;
  }
}