/* ═══════════════════════════════════════════════════
   W站 維立設計 main.css — from mockup-W.html v2
   Design tokens in critical CSS (inline in head.html)
   This file: everything below the fold
═══════════════════════════════════════════════════ */

/* NAV */
.site-nav {
  display: flex;
  align-items: center;
  list-style: none;
  padding-bottom: 0.9375rem;
  gap: 0;
}
.site-nav li + li::before {
  content: '/';
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-rule);
  padding: 0 0.625rem;
  user-select: none;
}
.site-nav a {
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--color-text-sub);
  letter-spacing: 0.01em;
  transition: color 120ms ease-out;
}
.site-nav a:hover { color: var(--color-text); }
.site-nav a.active { color: var(--color-accent); font-weight: 700; }

/* Hamburger */
.hamburger-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 0.875rem;
}
.hamburger-btn span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--color-text);
  transition: transform 150ms ease-out, opacity 150ms ease-out;
}
.hamburger-btn.is-open span:nth-child(1) {
  transform: rotate(45deg) translate(4.5px, 4.5px);
}
.hamburger-btn.is-open span:nth-child(2) {
  opacity: 0;
}
.hamburger-btn.is-open span:nth-child(3) {
  transform: rotate(-45deg) translate(4.5px, -4.5px);
}

/* Mobile nav drawer */
.mobile-nav {
  background: var(--color-bg);
  border-top: 1px solid var(--color-rule);
  padding: 0 var(--edge) 1.25rem;
}
.mobile-nav[hidden] { display: none; }
.mobile-nav ul { list-style: none; }
.mobile-nav li { border-bottom: 1px solid var(--color-rule); }
.mobile-nav a {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--color-text);
  padding: 0.875rem 0;
  letter-spacing: 0.01em;
  transition: color 120ms ease-out;
}
.mobile-nav a:hover { color: var(--color-accent); }

/* SECTION WRAPPER */
.section-wrap {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 3.5rem var(--edge);
}
.section-wrap + .section-wrap {
  padding-top: 0;
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-text-sub);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}

/* POST LIST — asymmetric editorial grid */
.post-list { display: flex; flex-direction: column; }
.post-item {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 0 2.5rem;
  padding: 2rem 0;
  border-top: 1px solid var(--color-rule);
  text-decoration: none;
  color: inherit;
  align-items: start;
  transition: opacity 150ms ease-out;
}
.post-item:last-child { border-bottom: 1px solid var(--color-rule); }
.post-item:hover .post-item-title { color: var(--color-accent); }
.post-item-side { padding-top: 0.2rem; }
.post-date {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-text-sub);
  letter-spacing: 0.04em;
  line-height: 1.6;
  display: block;
}
.post-cat {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 0.5rem;
}
.post-item-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--color-text);
  line-height: 1.45;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
  transition: color 120ms ease-out;
}
.post-item-desc {
  font-size: 0.9rem;
  color: var(--color-text-sub);
  line-height: 1.65;
}

/* CATEGORIES — plain text list */
.category-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--color-rule);
}
.category-item {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-rule);
  text-decoration: none;
  color: inherit;
  transition: opacity 150ms ease-out;
}
.category-item:hover { opacity: 0.65; }
.category-num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-rule);
  letter-spacing: 0.04em;
  flex-shrink: 0;
  width: 1.5rem;
}
.category-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.category-arrow {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-rule);
}

/* ABOUT STRIP */
.about-strip {
  background: var(--color-surface);
  border-top: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
  padding: 3rem var(--edge);
}
.about-strip-inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 3rem;
  align-items: start;
}
.about-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-text-sub);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.about-heading {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.375rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.about-body {
  font-size: 0.9375rem;
  color: var(--color-text-sub);
  line-height: 1.8;
}
.about-body p + p { margin-top: 0.875rem; }

/* FOOTER */
.site-footer-wrap {
  border-top: 1px solid var(--color-rule);
}
.site-footer {
  padding: 1.75rem var(--edge);
  max-width: var(--max-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-brand {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-text);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.footer-copy {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--color-text-sub);
}
.footer-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}
.footer-link {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--color-text-sub);
  letter-spacing: 0.04em;
  transition: color 120ms ease-out;
}
.footer-link:hover { color: var(--color-accent); }

/* CATEGORY PAGE HEADER */
.cat-header {
  padding: 3rem var(--edge) 0;
  border-bottom: 1px solid var(--color-rule);
  background: var(--color-surface);
}
.cat-header-inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding-bottom: 2rem;
}
.cat-breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-text-sub);
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}
.cat-header h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  color: var(--color-text);
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 0.75rem;
}
.cat-header-desc {
  font-size: 0.9375rem;
  color: var(--color-text-sub);
  max-width: 480px;
}
.list-empty {
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  color: var(--color-text-sub);
  padding: 2rem 0;
}

/* ARTICLE PAGE */
.article-wrap { background: var(--color-white); }
.article-header {
  padding: 3.5rem var(--edge) 0;
  max-width: var(--max-wide);
  margin: 0 auto;
}
.article-header-top {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--color-rule);
}
.article-cat {
  font-family: var(--font-ui);
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.article-date {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-text-sub);
  letter-spacing: 0.04em;
}
.article-read {
  font-family: var(--font-ui);
  font-size: 0.6875rem;
  color: var(--color-text-sub);
  margin-left: auto;
}
.article-header h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  color: var(--color-text);
  line-height: 1.2;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
  max-width: 720px;
}
.article-lede {
  font-size: 1.0625rem;
  color: var(--color-text-sub);
  line-height: 1.7;
  max-width: 600px;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--color-rule);
}

/* Article body */
.article-body {
  max-width: 680px;
  margin: 0 auto;
  padding: 2.5rem var(--edge) 5rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text);
}
.article-body h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1875rem;
  color: var(--color-text);
  margin: 2.75rem 0 0.875rem;
  letter-spacing: -0.01em;
  padding-left: 0.875rem;
  border-left: 2px solid var(--color-accent);
}
.article-body h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text-sub);
  margin: 2rem 0 0.5rem;
}
.article-body p { margin-bottom: 1.25rem; }
.article-body strong { font-weight: 700; color: var(--color-text); }
.article-body a { color: var(--color-accent); text-decoration: underline; transition: color 120ms ease-out; }
.article-body a:hover { color: var(--color-accent-dk); }
.mono { font-family: var(--font-mono); }

/* Article tables */
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.9375rem;
}
.article-body th {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-sub);
  letter-spacing: 0.05em;
  text-align: left;
  padding: 0.625rem 0.875rem;
  border-bottom: 1px solid var(--color-text);
  background: none;
}
.article-body td {
  padding: 0.75rem 0.875rem;
  border-bottom: 1px solid var(--color-rule);
  vertical-align: top;
}
.article-body td:first-child { font-weight: 700; }
.article-body td.num {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-accent);
  white-space: nowrap;
}

/* Blockquote */
.article-body blockquote {
  margin: 2rem 0;
  padding: 1rem 0 1rem 1.25rem;
  border-left: 2px solid var(--color-accent);
}
.article-body blockquote p {
  margin-bottom: 0;
  font-size: 0.9375rem;
  color: var(--color-text-sub);
  font-style: italic;
  line-height: 1.7;
}

/* Article figure */
.article-body figure {
  margin: 2rem 0;
}
.article-body figcaption {
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  color: var(--color-text-sub);
  margin-top: 0.5rem;
  line-height: 1.5;
}

/* PAGINATION */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 2.5rem 0 0;
  margin-top: 1rem;
  border-top: 1px solid var(--color-rule);
}
.pagination-link {
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-accent);
  transition: opacity 120ms ease-out;
}
.pagination-link:hover { opacity: 0.65; }
.pagination-info {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-text-sub);
}

/* EDITORIAL SHORTCODES */
.num-highlight {
  display: flex;
  gap: 1.5rem;
  margin: 2rem 0;
  flex-wrap: wrap;
}
.num-cell {
  background: var(--color-surface);
  border-top: 2px solid var(--color-accent);
  padding: 1.25rem 1.5rem;
  flex: 1;
  min-width: 140px;
}
.num-label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--color-text-sub);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.num-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--color-accent);
  line-height: 1.1;
}
.num-unit {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--color-text-sub);
  margin-top: 0.25rem;
}
.num-note {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--color-text-sub);
  margin-top: 0.5rem;
  font-style: italic;
}

.skip-box {
  margin: 2rem 0;
  border: 1px solid var(--color-rule);
  border-left: 3px solid var(--color-accent);
}
.skip-box-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--color-surface);
}
.skip-box-icon {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-accent);
  font-weight: 700;
}
.skip-box-title {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text);
}
.skip-box-body {
  padding: 1rem;
  font-size: 0.9375rem;
  color: var(--color-text-sub);
}
.skip-box-body ul { padding-left: 1.25rem; }
.skip-box-body li { margin-bottom: 0.25rem; }

.budget-table-wrap { margin: 2rem 0; }
.budget-table-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-text);
  margin-bottom: 0;
}
.budget-table-head-title {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text);
}
.budget-table-head-sub {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--color-text-sub);
}
.budget-table-inner table {
  margin-top: 0;
}

/* RWD */
@media (max-width: 768px) {
  :root { --edge: 1.25rem; }

  .site-nav { display: none; }
  .hamburger-btn { display: flex; }

  .hero { padding: 2.5rem var(--edge) 2.25rem; }

  /* Post list: collapse to single col on mobile */
  .post-item {
    grid-template-columns: 1fr;
    gap: 0.375rem;
  }
  .post-item-side { display: flex; gap: 1rem; align-items: center; }
  .post-date { display: inline; }
  .post-cat { margin-top: 0; }

  /* About strip: single col */
  .about-strip-inner { grid-template-columns: 1fr; gap: 1.5rem; }

  /* Footer: stacked */
  .site-footer { flex-direction: column; align-items: flex-start; gap: 0.375rem; }

  /* Article header full padding */
  .article-header { padding-top: 2.25rem; }
  .article-header h1 { font-size: 1.5rem; }

  /* Article body: full-width */
  .article-body { padding: 2rem var(--edge) 3.5rem; }

  /* table horizontal scroll */
  .article-body table { display: block; overflow-x: auto; }

  /* Cat header */
  .cat-header { padding: 2.25rem var(--edge) 0; }

  /* Category list: hide arrow */
  .category-arrow { display: none; }

  /* Article header top: wrap */
  .article-header-top { flex-wrap: wrap; gap: 0.75rem; }
  .article-read { margin-left: 0; }
}