:root {
  --bg: #f4f1ea;
  --panel: #fffdf8;
  --ink: #1f2a33;
  --muted: #5d6972;
  --brand: #0e7a6b;
  --brand-deep: #0b5f55;
  --accent: #c96f2d;
  --line: #d6d0c2;
  --ok: #2e7d32;
  --warn: #b4690e;
  --bad: #b42318;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 10%, #efe7d8 0%, transparent 36%),
    radial-gradient(circle at 90% 90%, #e8f2ef 0%, transparent 34%),
    var(--bg);
  line-height: 1.65;
}

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

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(10px);
  background: rgba(255, 253, 248, 0.88);
  border-bottom: 1px solid rgba(214, 208, 194, 0.7);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.1rem;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--brand) 0%, #149080 100%);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.98rem;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--brand-deep);
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  font-size: 1.3rem;
  color: var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 0.65rem 1.2rem;
  font-size: 0.95rem;
  transition: all 0.25s ease;
  cursor: pointer;
}

.btn.brand {
  color: #fff;
  background: linear-gradient(135deg, var(--brand) 0%, #138777 100%);
}

.btn.brand:hover {
  transform: translateY(-1px);
}

.btn.outline {
  border-color: var(--line);
  color: var(--ink);
  background: #fff;
}

.hero {
  padding: 5.2rem 0 4.2rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
  align-items: center;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 4.7vw, 3.5rem);
  line-height: 1.2;
}

.hero p {
  color: var(--muted);
  max-width: 45ch;
}

.hero-card {
  background: linear-gradient(160deg, #fffdf8 0%, #f8f5ef 100%);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 1.25rem;
  box-shadow: 0 12px 34px rgba(47, 54, 61, 0.08);
}

.hero-card img {
  width: 100%;
  border-radius: 16px;
  display: block;
}

.section {
  padding: 4.2rem 0;
}

.section h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 0.7rem;
}

.section-lead {
  color: var(--muted);
  max-width: 60ch;
  margin: 0 0 1.8rem;
}

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

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1.1rem;
  box-shadow: 0 8px 20px rgba(31, 42, 51, 0.06);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.45rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.feature-band {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(150deg, #f6f8f1 0%, #fbf7ef 100%);
  padding: 1.2rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.kpi {
  padding: 0.65rem;
}

.kpi strong {
  display: block;
  font-size: 1.65rem;
  color: var(--brand-deep);
}

.kpi span {
  color: var(--muted);
  font-size: 0.93rem;
}

.tool-panel {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: 0 12px 24px rgba(31, 42, 51, 0.07);
  padding: 1.2rem;
}

.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

label {
  font-weight: 600;
  font-size: 0.95rem;
}

textarea,
input,
select {
  width: 100%;
  border: 1px solid #c7c1b3;
  border-radius: 12px;
  padding: 0.75rem 0.8rem;
  font: inherit;
  color: var(--ink);
  background: #fffcf6;
}

textarea:focus,
input:focus,
select:focus {
  outline: 2px solid rgba(14, 122, 107, 0.18);
  border-color: var(--brand);
}

textarea {
  min-height: 220px;
  resize: vertical;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.actions {
  margin-top: 0.7rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.8rem;
  border: 1px solid;
}

.badge.ok {
  color: var(--ok);
  border-color: #b6d9b8;
  background: #edf8ee;
}

.badge.warn {
  color: var(--warn);
  border-color: #f0c89f;
  background: #fff3e4;
}

.badge.bad {
  color: var(--bad);
  border-color: #f0b7b2;
  background: #fff0ef;
}

.result-box {
  min-height: 220px;
  background: #fff;
  border: 1px dashed #c8c1b3;
  border-radius: 12px;
  padding: 0.8rem;
  color: #2c3b45;
  white-space: pre-wrap;
}

.check-list {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--muted);
}

.check-list li + li {
  margin-top: 0.3rem;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #fffdf8;
}

th,
td {
  text-align: left;
  padding: 0.75rem;
  border-bottom: 1px solid #e2dacb;
  font-size: 0.94rem;
}

th {
  background: #f4efe4;
}

.timeline {
  border-left: 2px solid #c8beaa;
  padding-left: 1rem;
}

.timeline-item {
  margin-bottom: 0.9rem;
}

.timeline-item strong {
  display: block;
  margin-bottom: 0.2rem;
}

.footer {
  margin-top: 2.4rem;
  border-top: 1px solid var(--line);
  background: #f6f1e8;
}

.footer-inner {
  padding: 1.4rem 0 1.9rem;
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr;
  gap: 1rem;
}

.footer small,
.footer p {
  color: var(--muted);
  margin: 0.2rem 0;
  font-size: 0.9rem;
}

.icp {
  margin-top: 0.7rem;
  font-size: 0.92rem;
  color: #3e4a54;
}

.notice {
  border-left: 4px solid var(--accent);
  background: #fff3e8;
  padding: 0.8rem;
  border-radius: 8px;
  color: #664221;
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.show {
  opacity: 1;
  transform: none;
}

.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
}

.ordered-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.ordered-list li + li {
  margin-top: 0.45rem;
}

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

.price-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fffdf8;
  padding: 1rem;
}

.price-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.price-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--brand-deep);
}

.inline-status {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(26, 30, 33, 0.52);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal.open {
  display: flex;
}

.modal-card {
  width: min(760px, 96vw);
  background: #fffdf8;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 16px 40px rgba(18, 26, 34, 0.22);
  overflow: hidden;
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(140deg, #0e7a6b 0%, #149080 100%);
  color: #fff;
  padding: 0.85rem 1rem;
}

.icon-btn {
  border: 0;
  background: transparent;
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
}

.modal-body {
  padding: 1rem;
}

.modal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.qr-box {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  padding: 0.9rem;
  text-align: center;
}

.qr-box img {
  width: 190px;
  max-width: 100%;
  border-radius: 10px;
  border: 1px solid #e4dccf;
}

.mini {
  color: var(--muted);
  font-size: 0.86rem;
}

.radio-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.55rem 0.7rem;
  background: #fff;
}

@media (max-width: 980px) {
  .hero-grid,
  .cards,
  .tool-grid,
  .footer-inner,
  .feature-band,
  .split,
  .price-grid,
  .modal-grid {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: fixed;
    inset: 62px 0 auto 0;
    background: #fffcf6;
    border-bottom: 1px solid var(--line);
    padding: 0.9rem 1rem;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .nav-links.open {
    display: flex;
  }

  .desktop-only {
    display: none;
  }
}