:root {
  color-scheme: light;
  --ink: #1b1a17;
  --ink-muted: #635d52;
  --charcoal: #2f312c;
  --charcoal-strong: #1d1f1b;
  --bronze: #a9804d;
  --bronze-light: #d7c09a;
  --paper: #f7f3eb;
  --paper-strong: #fffaf1;
  --sage: #dfe6d8;
  --line: rgba(47, 49, 44, 0.16);
  --white: #ffffff;
  --safe: #506c54;
  --watch: #a77833;
  --over: #a33d31;
  --shadow: 0 24px 70px rgba(20, 19, 16, 0.24);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Pretendard,
    "Noto Sans KR",
    "Apple SD Gothic Neo",
    "Segoe UI",
    sans-serif;
  letter-spacing: 0;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.site-shell {
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(47, 49, 44, 0.04), transparent 34rem),
    var(--paper);
}

.hero-panel {
  position: relative;
  min-height: 760px;
  overflow: hidden;
  padding: 24px clamp(18px, 4vw, 56px) 54px;
  color: var(--white);
  background: var(--charcoal-strong);
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 62% 50%;
  opacity: 0.74;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(17, 18, 15, 0.94) 0%, rgba(17, 18, 15, 0.78) 34%, rgba(17, 18, 15, 0.5) 68%, rgba(17, 18, 15, 0.74) 100%),
    linear-gradient(180deg, rgba(17, 18, 15, 0.18), rgba(17, 18, 15, 0.82));
}

.topbar,
.hero-content {
  position: relative;
  z-index: 1;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: 1380px;
  margin: 0 auto 44px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(215, 192, 154, 0.72);
  color: var(--bronze-light);
  font-family: Georgia, serif;
  font-size: 22px;
}

.brand strong {
  display: block;
  font-size: 15px;
  letter-spacing: 0.18em;
}

.brand small {
  display: block;
  margin-top: 3px;
  color: rgba(255, 255, 255, 0.66);
  font-size: 12px;
}

.topbar-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.topbar-meta span {
  border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 8px 12px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 12px;
}

.hero-content {
  display: grid;
  grid-template-columns: minmax(280px, 0.74fr) minmax(360px, 1fr) minmax(320px, 0.82fr);
  align-items: stretch;
  gap: 18px;
  max-width: 1380px;
  margin: 0 auto;
}

.intro-block {
  align-self: end;
  max-width: 460px;
  padding: 0 8px 18px 0;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 10px;
  color: var(--bronze-light);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(42px, 5vw, 78px);
  font-weight: 600;
  line-height: 1.04;
}

.intro-copy {
  max-width: 38rem;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(16px, 1.3vw, 19px);
  line-height: 1.75;
}

.quick-facts {
  display: grid;
  gap: 1px;
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.09);
}

.quick-facts div {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 14px;
  padding: 13px 14px;
  background: rgba(20, 20, 16, 0.24);
}

.quick-facts dt {
  color: rgba(255, 255, 255, 0.58);
  font-size: 12px;
}

.quick-facts dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 13px;
  font-weight: 700;
}

.calculator-card,
.result-card {
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.calculator-card {
  background: rgba(250, 246, 237, 0.94);
  color: var(--ink);
  padding: clamp(18px, 2vw, 28px);
}

.result-card {
  background: rgba(31, 32, 28, 0.86);
  color: var(--white);
  padding: clamp(18px, 2vw, 28px);
}

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

.panel-header h2,
.result-head h2 {
  margin: 0;
  font-size: 25px;
  font-weight: 650;
}

.ghost-button {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.42);
  color: var(--ink-muted);
  padding: 0 14px;
  font-size: 13px;
}

.ghost-button:hover {
  border-color: rgba(169, 128, 77, 0.55);
  color: var(--ink);
}

.input-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.field {
  display: grid;
  gap: 8px;
}

.field:first-child,
.field:nth-child(2) {
  grid-column: span 2;
}

.field span:first-child,
.control-label {
  color: var(--ink-muted);
  font-size: 13px;
  font-weight: 700;
}

.field-control {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  min-height: 48px;
  border: 1px solid rgba(47, 49, 44, 0.18);
  border-radius: var(--radius);
  background: var(--white);
  overflow: hidden;
}

.field-control:focus-within {
  border-color: var(--bronze);
  box-shadow: 0 0 0 3px rgba(169, 128, 77, 0.15);
}

.field-control input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  padding: 12px 4px 12px 14px;
  color: var(--ink);
  font-size: 17px;
  font-weight: 700;
}

.field-control b {
  padding-right: 13px;
  color: var(--ink-muted);
  font-size: 13px;
}

.control-group {
  display: grid;
  gap: 9px;
  margin-top: 18px;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 5px;
  padding: 5px;
  border: 1px solid rgba(47, 49, 44, 0.15);
  border-radius: var(--radius);
  background: rgba(47, 49, 44, 0.06);
}

.segmented.stages {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.segmented button {
  min-height: 40px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--ink-muted);
  font-size: 14px;
  font-weight: 800;
}

.segmented button.is-active {
  background: var(--charcoal);
  color: var(--paper-strong);
  box-shadow: 0 8px 22px rgba(47, 49, 44, 0.18);
}

.status-chip {
  min-width: 58px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--bronze-light);
  font-size: 13px;
  font-weight: 800;
  text-align: center;
}

[data-status="watch"] .status-chip {
  color: #ffd695;
}

[data-status="over"] .status-chip {
  color: #ffb1a6;
}

.metric-primary {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  padding: 24px 0;
}

.metric-primary span {
  display: block;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
  font-weight: 800;
}

.metric-primary strong {
  display: block;
  margin: 4px 0 16px;
  color: var(--paper-strong);
  font-size: clamp(48px, 6vw, 82px);
  font-weight: 650;
  line-height: 1;
}

.bar {
  position: relative;
  height: 11px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
}

.bar span {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: var(--safe);
  transition: width 180ms ease, background-color 180ms ease;
}

[data-status="watch"] .bar span {
  background: var(--watch);
}

[data-status="over"] .bar span {
  background: var(--over);
}

.metric-primary small {
  display: block;
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.56);
}

.result-list {
  display: grid;
  gap: 1px;
  margin: 18px 0;
  background: rgba(255, 255, 255, 0.12);
}

.result-list div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  background: rgba(31, 32, 28, 0.92);
}

.result-list dt {
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
}

.result-list dd {
  margin: 0;
  color: var(--paper-strong);
  font-size: clamp(16px, 1.35vw, 22px);
  font-weight: 800;
  text-align: right;
}

.notice-line {
  border-left: 3px solid var(--bronze-light);
  padding: 0 0 0 12px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  line-height: 1.6;
}

.details-section {
  width: min(1320px, calc(100% - 36px));
  margin: -32px auto 70px;
  position: relative;
  z-index: 2;
}

.tabbar {
  display: inline-grid;
  grid-template-columns: repeat(3, minmax(84px, 1fr));
  gap: 4px;
  margin-bottom: 18px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-strong);
  box-shadow: 0 12px 36px rgba(47, 49, 44, 0.1);
}

.tabbar button {
  min-height: 38px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--ink-muted);
  font-weight: 800;
}

.tabbar button.is-active {
  background: var(--charcoal);
  color: var(--paper-strong);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.summary-tile,
.rules-grid article,
.table-wrap,
.validation-box {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 250, 241, 0.92);
  box-shadow: 0 16px 48px rgba(47, 49, 44, 0.09);
}

.summary-tile {
  display: grid;
  gap: 8px;
  min-height: 142px;
  padding: 22px;
}

.summary-tile span,
.summary-tile small {
  color: var(--ink-muted);
}

.summary-tile span {
  font-size: 13px;
  font-weight: 800;
}

.summary-tile strong {
  align-self: center;
  color: var(--charcoal-strong);
  font-size: clamp(22px, 2vw, 30px);
  font-weight: 850;
  line-height: 1.18;
  word-break: keep-all;
}

.summary-tile small {
  font-size: 12px;
}

.validation-box {
  margin-top: 14px;
  padding: 16px 18px;
  border-color: rgba(163, 61, 49, 0.28);
  color: var(--over);
}

.validation-box ul {
  margin: 8px 0 0;
  padding-left: 20px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

caption {
  padding: 18px 20px 8px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 850;
  text-align: left;
}

th,
td {
  border-bottom: 1px solid rgba(47, 49, 44, 0.1);
  padding: 13px 16px;
  text-align: right;
  white-space: nowrap;
}

thead th {
  background: var(--charcoal);
  color: var(--paper-strong);
  font-size: 13px;
}

tbody th,
tfoot th {
  text-align: center;
}

tbody td,
tbody th {
  color: var(--ink);
}

tfoot th,
tfoot td {
  background: rgba(169, 128, 77, 0.12);
  color: var(--charcoal-strong);
  font-weight: 850;
}

.rules-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 14px;
}

.rules-grid article {
  padding: 22px;
}

.rules-grid h3 {
  margin: 0 0 16px;
  color: var(--charcoal-strong);
  font-size: 19px;
}

.mini-table {
  min-width: 560px;
  border: 1px solid rgba(47, 49, 44, 0.1);
  overflow: hidden;
  border-radius: var(--radius);
}

.mini-table th,
.mini-table td {
  padding: 12px;
  font-size: 13px;
  text-align: center;
}

.rule-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 18px;
  color: var(--ink-muted);
  line-height: 1.7;
}

@media (max-width: 1160px) {
  .hero-panel {
    min-height: auto;
  }

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

  .intro-block {
    grid-column: span 2;
    max-width: 720px;
    padding-bottom: 10px;
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .hero-panel {
    padding: 18px 16px 46px;
  }

  .hero-image {
    object-position: 70% 50%;
  }

  .hero-scrim {
    background:
      linear-gradient(180deg, rgba(17, 18, 15, 0.92), rgba(17, 18, 15, 0.7) 42%, rgba(17, 18, 15, 0.9)),
      rgba(17, 18, 15, 0.2);
  }

  .topbar {
    align-items: flex-start;
    margin-bottom: 34px;
  }

  .topbar-meta {
    display: none;
  }

  .hero-content,
  .rules-grid {
    grid-template-columns: 1fr;
  }

  .intro-block {
    grid-column: auto;
  }

  h1 {
    font-size: clamp(36px, 13vw, 58px);
  }

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

  .field:first-child,
  .field:nth-child(2) {
    grid-column: auto;
  }

  .calculator-card,
  .result-card {
    padding: 18px;
  }

  .result-list div {
    padding: 13px 0;
  }

  .details-section {
    width: calc(100% - 24px);
    margin-top: -22px;
  }

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

  .tabbar {
    display: grid;
    width: 100%;
  }

  .summary-tile {
    min-height: 112px;
  }
}

@media (max-width: 520px) {
  .brand strong {
    font-size: 13px;
  }

  .brand small {
    font-size: 11px;
  }

  .quick-facts div {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .panel-header,
  .result-head {
    align-items: flex-start;
  }

  .segmented.stages {
    gap: 4px;
  }

  .segmented button {
    min-height: 38px;
    font-size: 13px;
  }

  .metric-primary strong {
    font-size: 52px;
  }

  .result-list div {
    display: grid;
    gap: 5px;
  }

  .result-list dd {
    text-align: left;
  }
}