:root {
  color-scheme: light;
  --ink: #12211c;
  --muted: #5d6c66;
  --paper: #f6f7f1;
  --surface: #ffffff;
  --line: #dfe5dc;
  --green: #176c4e;
  --green-soft: #dff0e5;
  --lime: #d6f26c;
  --orange: #ef7d4b;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 87% 10%, rgba(214, 242, 108, .32), transparent 24rem),
    var(--paper);
  font-family: Inter, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  line-height: 1.6;
}

a { color: inherit; }

.skip-link {
  position: fixed;
  top: .75rem;
  left: .75rem;
  z-index: 10;
  padding: .6rem .9rem;
  background: var(--ink);
  color: white;
  transform: translateY(-200%);
}

.skip-link:focus { transform: translateY(0); }

.site-header,
main,
footer {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

footer nav { display: flex; gap: 1.25rem; }
footer a { text-underline-offset: .22em; }
footer a:hover, footer a:focus-visible { color: var(--green); }

.portal-nav { display: flex; align-items: center; gap: 1rem; }
.portal-nav a { font-size: .86rem; font-weight: 750; text-decoration: none; }
.portal-nav form { margin: 0; }
.portal-nav .google-signin {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .55rem .85rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  background: rgba(255, 255, 255, .82);
  box-shadow: 0 2px 8px rgba(18, 33, 28, .06);
}
.portal-nav .google-signin:hover,
.portal-nav .google-signin:focus-visible { color: var(--ink); border-color: #aebbb4; text-decoration: none; background: white; }
.link-button { padding: 0; border: 0; color: var(--muted); background: transparent; font: inherit; font-size: .86rem; font-weight: 750; cursor: pointer; }
.link-button:hover, .link-button:focus-visible, .portal-nav a:hover, .portal-nav a:focus-visible { color: var(--green); text-decoration: underline; }

.portal-page { min-height: 70vh; padding: 4rem 0 7rem; }
.portal-page h1 { font-size: clamp(3rem, 7vw, 6rem); }
.portal-shell { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.portal-sidebar { position: sticky; top: 1.5rem; padding: 1.2rem; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.72); }
.portal-sidebar nav { display: flex; flex-direction: column; gap: .25rem; }
.portal-sidebar a { padding: .55rem .65rem; border-radius: 9px; color: var(--muted); font-size: .83rem; font-weight: 750; text-decoration: none; }
.portal-sidebar a:hover, .portal-sidebar a:focus-visible { color: var(--green); background: var(--green-soft); }
.portal-content { min-width: 0; }
.portal-identity { margin: 1rem 0 3rem; color: var(--muted); }
.portal-notice, .secret-once { padding: 1rem 1.2rem; border: 1px solid #bad9c7; border-radius: 14px; background: var(--green-soft); }
.secret-once code { display: block; overflow-wrap: anywhere; margin: .7rem 0; padding: .75rem; border-radius: 8px; background: white; }
.secret-once p { margin: 0; color: var(--muted); font-size: .8rem; }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin: 2rem 0; }
.metric-grid article { padding: 1.3rem; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.8); }
.metric-grid span, .metric-grid strong { display: block; }
.metric-grid span { color: var(--muted); font-size: .78rem; }
.metric-grid strong { margin-top: .4rem; font-size: 1.6rem; }
.portal-card { margin-top: 2rem; padding: 1.5rem; border: 1px solid var(--line); border-radius: 18px; background: white; }
.portal-card h2 { font-size: 1.5rem; }
.order-list article { display: grid; grid-template-columns: 1fr auto auto; gap: 1rem; align-items: center; padding: 1rem 0; border-top: 1px solid var(--line); }
.order-list small { display: block; color: var(--muted); }
.order-list em { color: var(--green); font-size: .78rem; font-style: normal; font-weight: 800; }
.settings-list > div { display: grid; grid-template-columns: minmax(10rem, .5fr) 1fr; gap: 1rem; padding: .8rem 0; border-bottom: 1px solid var(--line); }
.settings-list dt { font-weight: 750; }
.settings-list dd { margin: 0; color: var(--muted); }
.admin-form { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.admin-form label { display: flex; flex-direction: column; gap: .35rem; color: var(--muted); font-size: .82rem; font-weight: 700; }
.admin-form input, .admin-form textarea { width: 100%; padding: .75rem; border: 1px solid var(--line); border-radius: 10px; color: var(--ink); background: white; font: inherit; }
.admin-form .full { grid-column: 1 / -1; }
.admin-form .checkbox, .agreement-confirm .checkbox { flex-direction: row; align-items: flex-start; }
.admin-form .checkbox input, .agreement-confirm .checkbox input { width: auto; margin-top: .35rem; }
.agreement-confirm form { display: grid; gap: 1rem; }

.back-link {
  color: var(--muted);
  font-size: .84rem;
  font-weight: 700;
  text-underline-offset: .25em;
}

.back-link:hover, .back-link:focus-visible { color: var(--green); }

.legal-page { padding: 4rem 0 7rem; }

.legal-hero {
  max-width: 900px;
  padding: 3.5rem 0 4.5rem;
}

.legal-hero h1 { font-size: clamp(3.6rem, 9vw, 7.5rem); }

.legal-summary {
  max-width: 740px;
  margin: 2rem 0 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.legal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.5rem;
  margin-top: 1.4rem;
  color: var(--muted);
  font-size: .76rem;
}

.legal-layout {
  display: grid;
  grid-template-columns: 200px minmax(0, 720px);
  gap: clamp(3rem, 8vw, 7rem);
  align-items: start;
  padding-top: 3rem;
  border-top: 1px solid var(--line);
}

.legal-nav {
  position: sticky;
  top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  font-size: .78rem;
}

.legal-nav strong { margin-bottom: .35rem; }
.legal-nav a { color: var(--muted); text-decoration: none; }
.legal-nav a:hover, .legal-nav a:focus-visible { color: var(--green); text-decoration: underline; }

.legal-content section {
  padding: 0 0 3.2rem;
  scroll-margin-top: 2rem;
}

.legal-content h2 {
  margin: 0 0 1.15rem;
  font-size: clamp(1.5rem, 3vw, 2.05rem);
  letter-spacing: -.035em;
}

.legal-content p { margin: 0 0 1rem; color: #485852; }
.legal-content code { font-size: .9em; }

.legal-callout {
  margin: 1.5rem 0;
  padding: 1.25rem 1.35rem;
  border: 1px solid #bad9c7;
  border-radius: 14px;
  background: var(--green-soft);
}

.legal-callout.warning { border-color: #e1d39b; background: #f8f0cc; }
.legal-callout strong { color: var(--ink); }
.legal-callout p { margin: .35rem 0 0; font-size: .88rem; }

.source-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .45rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-size: .82rem;
}

.source-links a { color: var(--green); text-underline-offset: .2em; }

.site-header {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  gap: .7rem;
  align-items: center;
  font-weight: 750;
  text-decoration: none;
  letter-spacing: -.02em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: white;
  background: var(--ink);
  font-size: .95rem;
}

.preview-badge,
.card-status {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .35rem .7rem;
  border: 1px solid #bfd7c7;
  border-radius: 999px;
  color: var(--green);
  background: rgba(255, 255, 255, .72);
  font-size: .78rem;
  font-weight: 700;
}

.status-dot {
  width: 8px;
  height: 8px;
  display: inline-block;
  border-radius: 50%;
  background: #27a671;
  box-shadow: 0 0 0 4px rgba(39, 166, 113, .13);
}

.hero {
  min-height: 610px;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: clamp(2rem, 7vw, 6rem);
  align-items: center;
  padding: 5rem 0 6rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--green);
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}

h1, h2, h3, p { text-wrap: pretty; }

h1 {
  margin: 0;
  font-size: clamp(3.25rem, 7vw, 6.4rem);
  line-height: .96;
  letter-spacing: -.065em;
}

h1 span { color: var(--green); }

.lead {
  max-width: 35rem;
  margin: 2rem 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 2rem;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .75rem 1.1rem;
  border-radius: 12px;
  font-size: .9rem;
  font-weight: 750;
  text-decoration: none;
}

.button.primary { color: white; background: var(--ink); }
.button.primary:hover { background: var(--green); }
.button.primary:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }
.button.muted { border: 1px solid var(--line); color: var(--muted); background: rgba(255,255,255,.55); }
.button.compact { min-height: 34px; margin-top: .4rem; padding: .35rem .65rem; border: 0; font-size: .72rem; cursor: pointer; }

.notice { margin: .9rem 0 0; color: var(--muted); font-size: .78rem; }
.product-detail { padding: 3rem 0 7rem; }
.product-hero { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 7vw, 6rem); align-items: center; padding: 3rem 0 5rem; }
.product-hero h1 { font-size: clamp(2.8rem, 6vw, 5.2rem); }
.product-preview { width: 100%; aspect-ratio: 16 / 10; display: block; object-fit: cover; border: 1px solid var(--line); border-radius: 24px; box-shadow: 0 24px 60px rgba(34,60,49,.12); }
.price-block { display: flex; flex-direction: column; margin: 2rem 0 1rem; }
.price-block strong { font-size: 1.8rem; }
.price-block span, .product-origin { color: var(--muted); font-size: .82rem; }
.quota-list { padding-left: 1.2rem; color: var(--muted); }
.product-origin { display: inline-block; margin-top: 1rem; text-underline-offset: .2em; }
.detail-copy { max-width: 760px; padding: 4rem 0; border-top: 1px solid var(--line); }
.detail-copy h2 { margin: 2rem 0 1rem; font-size: 2rem; }
.detail-copy p, .agreement-copy { color: var(--muted); white-space: pre-wrap; }
.related-products { padding-top: 4rem; border-top: 1px solid var(--line); }

.ledger-card {
  position: relative;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, .88);
  box-shadow: 0 28px 80px rgba(34, 60, 49, .12);
}

.ledger-card::before {
  content: "";
  position: absolute;
  inset: -14px 28px auto;
  height: 14px;
  border-radius: 16px 16px 0 0;
  background: var(--lime);
  z-index: -1;
}

.card-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .25rem .2rem 1.3rem;
  border-bottom: 1px solid var(--line);
  font-size: .84rem;
  font-weight: 750;
}

.card-status { background: var(--green-soft); }

.flow-step {
  display: grid;
  grid-template-columns: 40px 1fr auto;
  gap: .85rem;
  align-items: center;
  padding: 1.15rem .2rem;
}

.step-number {
  color: var(--green);
  font-size: .72rem;
  font-weight: 800;
}

.flow-step strong,
.flow-step small { display: block; }
.flow-step strong { font-size: .92rem; }
.flow-step small { color: var(--muted); font-size: .76rem; }
.step-state { color: var(--green); font-size: .72rem; font-weight: 750; }
.flow-line { height: 1px; margin-left: 3.2rem; background: var(--line); }

.principles { padding: 6rem 0; border-top: 1px solid var(--line); }
.products-section { padding: 6rem 0; border-top: 1px solid var(--line); }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 3rem; }
.product-card { overflow: hidden; border: 1px solid var(--line); border-radius: 20px; background: rgba(255,255,255,.72); }
.product-card > img { width: 100%; aspect-ratio: 16 / 9; display: block; object-fit: cover; background: var(--green-soft); }
.product-card-body { padding: 1.3rem; }
.product-card h3 { margin: 0 0 .6rem; }
.product-card p { min-height: 3.2rem; margin: 0; color: var(--muted); font-size: .88rem; }
.product-card-footer { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-top: 1.4rem; }
.product-card-footer a { color: var(--green); font-weight: 800; text-underline-offset: .2em; }
.section-heading { max-width: 650px; }
h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.5rem); line-height: 1.12; letter-spacing: -.045em; }

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

.principle-grid article {
  min-height: 230px;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255,255,255,.55);
}

.icon {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  color: var(--green);
  background: var(--green-soft);
  font-size: .72rem;
  font-weight: 800;
}

h3 { margin: 2.5rem 0 .5rem; font-size: 1.15rem; }
.principle-grid p { margin: 0; color: var(--muted); font-size: .9rem; }

.status-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin: 2rem 0 6rem;
  padding: clamp(2rem, 5vw, 4rem);
  border-radius: 26px;
  color: white;
  background: var(--ink);
}

.status-panel .eyebrow { color: var(--lime); }
.status-panel h2 { font-size: clamp(1.65rem, 3vw, 2.6rem); }
.status-panel p { margin: 1.2rem 0 0; color: #bdc8c3; }
.status-dot.large { width: 11px; height: 11px; margin-right: .65rem; vertical-align: .28em; }

.availability { align-self: center; }
.availability div { padding: 1rem 0; border-bottom: 1px solid rgba(255,255,255,.14); }
.availability div:first-child { border-top: 1px solid rgba(255,255,255,.14); }
.availability span, .availability strong { display: block; }
.availability span { color: var(--lime); font-size: .72rem; font-weight: 800; letter-spacing: .08em; }
.availability strong { margin-top: .25rem; font-size: .88rem; }

footer {
  display: flex;
  justify-content: space-between;
  padding: 1.6rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .78rem;
}

@media (max-width: 800px) {
  .hero, .product-hero { grid-template-columns: 1fr; padding-top: 3.5rem; }
  .ledger-card { max-width: 560px; }
  .principle-grid, .status-panel, .product-grid { grid-template-columns: 1fr; }
  .status-panel { gap: 2rem; }
  .legal-layout { grid-template-columns: 1fr; gap: 2.5rem; }
  .legal-nav { position: static; display: grid; grid-template-columns: repeat(2, 1fr); }
  .legal-nav strong { grid-column: 1 / -1; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .portal-shell { grid-template-columns: 1fr; }
  .portal-sidebar { position: static; }
  .portal-sidebar nav { display: grid; grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 520px) {
  .site-header, main, footer { width: min(100% - 28px, 1120px); }
  .site-header { min-height: 72px; }
  .hero { min-height: auto; padding: 3rem 0 4.5rem; }
  h1 { font-size: clamp(3rem, 15vw, 4rem); }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .principles { padding: 4.5rem 0; }
  .principle-grid { grid-template-columns: 1fr; }
  .principle-grid article { min-height: 190px; }
  .status-panel { margin-bottom: 4rem; padding: 1.5rem; }
  footer { gap: 1rem; flex-direction: column; }
  footer nav { flex-wrap: wrap; }
  .legal-page { padding-top: 2rem; }
  .legal-hero { padding: 2.5rem 0 3.5rem; }
  .portal-nav { gap: .6rem; }
  .metric-grid { grid-template-columns: 1fr; }
  .order-list article { grid-template-columns: 1fr; gap: .3rem; }
  .settings-list > div { grid-template-columns: 1fr; gap: .2rem; }
  .admin-form { grid-template-columns: 1fr; }
  .admin-form .full { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}