/* =============================================================
   FengShui Tips — Core Design System
   Light, editorial, card-based. Ink + jade + warm sand.
   ============================================================= */

:root {
  /* Color tokens */
  --ink: #16211d;
  --ink-2: #2f3d38;
  --muted: #6b7b74;
  --muted-2: #8a9893;
  --line: #e4e9e6;
  --line-2: #eef2ef;
  --bg: #ffffff;
  --bg-soft: #f7faf8;
  --bg-sand: #fbf8f3;
  --jade: #1f6b53;
  --jade-dark: #15503d;
  --jade-soft: #e8f2ed;
  --sand: #b9884a;
  --sand-soft: #f7efe3;
  --gold: #b9884a;
  --warn: #a4553a;

  /* Type scale */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino,
    Georgia, "Songti SC", serif;

  /* Layout */
  --wrap: 1180px;
  --wrap-narrow: 760px;
  --r-sm: 6px;
  --r: 10px;
  --r-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(22, 33, 29, 0.05);
  --shadow: 0 2px 10px rgba(22, 33, 29, 0.06);
  --shadow-lg: 0 12px 32px rgba(22, 33, 29, 0.1);

  --header-h: 68px;
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--jade); text-decoration: none; }
a:hover { color: var(--jade-dark); text-decoration: underline; }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--ink);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
  font-weight: 600;
}

h1 { font-size: clamp(1.85rem, 1.2rem + 2.4vw, 2.75rem); }
h2 { font-size: clamp(1.4rem, 1.1rem + 1.2vw, 1.9rem); margin-top: 1.9em; }
h3 { font-size: clamp(1.12rem, 1rem + 0.5vw, 1.35rem); margin-top: 1.5em; }
h4 { font-size: 1.02rem; margin-top: 1.3em; }

p { margin: 0 0 1.15em; }

strong { color: var(--ink); font-weight: 650; }

::selection { background: var(--jade-soft); color: var(--jade-dark); }

/* ---------- Skip link & accessibility ---------- */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--jade); color: #fff; padding: 12px 20px;
  border-radius: 0 0 var(--r-sm) 0; font-weight: 600;
}
.skip-link:focus { left: 0; color: #fff; }

:focus-visible {
  outline: 2px solid var(--jade);
  outline-offset: 2px;
  border-radius: 3px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* =============================================================
   Layout
   ============================================================= */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}
.wrap-narrow { max-width: var(--wrap-narrow); }

.site-main { min-height: 60vh; padding-bottom: 64px; }

/* =============================================================
   Header
   ============================================================= */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.site-header-inner {
  display: flex; align-items: center; gap: 28px;
  height: var(--header-h);
}

.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-serif); font-weight: 700;
  font-size: 1.22rem; color: var(--ink); letter-spacing: -0.015em;
  flex-shrink: 0;
}
.brand:hover { text-decoration: none; color: var(--ink); }
.brand-mark {
  width: 32px; height: 32px; border-radius: 8px;
  background: linear-gradient(140deg, var(--jade) 0%, var(--jade-dark) 100%);
  color: #fff; display: grid; place-items: center;
  font-size: 0.82rem; font-weight: 700; letter-spacing: -0.03em;
  flex-shrink: 0;
}
.brand-text small {
  display: block; font-family: var(--font-sans);
  font-size: 0.66rem; font-weight: 500; letter-spacing: 0.09em;
  text-transform: uppercase; color: var(--muted-2); margin-top: -3px;
}

.nav { margin-left: auto; }
.nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav a {
  display: block; padding: 9px 13px; border-radius: var(--r-sm);
  color: var(--ink-2); font-size: 0.93rem; font-weight: 550;
  white-space: nowrap;
}
.nav a:hover { background: var(--bg-soft); color: var(--ink); text-decoration: none; }
.nav .has-sub { position: relative; }
.nav .has-sub > a::after {
  content: ""; display: inline-block; width: 5px; height: 5px;
  border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px); margin-left: 6px; opacity: 0.55;
}
.nav .sub {
  position: absolute; top: calc(100% + 6px); left: 0;
  background: #fff; border: 1px solid var(--line); border-radius: var(--r);
  box-shadow: var(--shadow-lg); padding: 8px; min-width: 236px;
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity .16s ease, transform .16s ease, visibility .16s;
}
.nav .has-sub:hover .sub,
.nav .has-sub:focus-within .sub {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.nav .sub a {
  padding: 8px 11px; font-size: 0.88rem; border-radius: var(--r-sm);
  display: block;
}
.nav .sub a:hover { background: var(--jade-soft); color: var(--jade-dark); }

/* Pure-CSS mobile submenu toggle */
.submenu-check { position: absolute; opacity: 0; pointer-events: none; }
.submenu-label {
  display: none; cursor: pointer; list-style: none;
  padding: 9px 13px; border-radius: var(--r-sm);
  color: var(--ink-2); font-size: 0.93rem; font-weight: 550;
}
.submenu-label::-webkit-details-marker { display: none; }

/* Search */
.header-search { display: flex; align-items: center; gap: 8px; position: relative; }
.header-search input {
  width: 168px; padding: 8px 12px; font-size: 0.87rem; font-family: inherit;
  border: 1px solid var(--line); border-radius: 100px; background: var(--bg-soft);
  color: var(--ink); transition: border-color .15s, width .2s, background .15s;
}
.header-search input:focus {
  outline: none; border-color: var(--jade); background: #fff; width: 208px;
}
.header-search button {
  background: none; border: 0; cursor: pointer; padding: 6px;
  color: var(--muted); display: grid; place-items: center; border-radius: var(--r-sm);
}
.header-search button:hover { color: var(--jade); background: var(--bg-soft); }
.header-search button svg { width: 17px; height: 17px; }

.search-results {
  position: absolute; top: calc(100% + 10px); right: 0; z-index: 120;
  width: min(420px, 88vw); max-height: 66vh; overflow-y: auto;
  background: #fff; border: 1px solid var(--line); border-radius: var(--r);
  box-shadow: var(--shadow-lg); padding: 8px;
}
.search-list { list-style: none; margin: 0; padding: 0; }
.search-list li { border-bottom: 1px solid var(--line-2); }
.search-list li:last-child { border-bottom: 0; }
.search-list a {
  display: block; padding: 10px 12px; border-radius: var(--r-sm); color: var(--ink);
}
.search-list a:hover { background: var(--jade-soft); text-decoration: none; }
.search-list b { display: block; font-size: 0.9rem; font-weight: 600; }
.search-list small { display: block; font-size: 0.8rem; color: var(--muted); margin-top: 2px; }
.search-tag {
  display: inline-block; font-size: 0.66rem; font-weight: 650;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--jade); background: var(--jade-soft);
  padding: 2px 7px; border-radius: 100px; margin-top: 5px;
}
.search-empty { padding: 14px 12px; margin: 0; font-size: 0.9rem; color: var(--muted); }

/* Mobile nav toggle — pure CSS */
.nav-toggle {
  display: none; margin-left: auto;
  background: none; border: 1px solid var(--line); border-radius: var(--r-sm);
  width: 40px; height: 38px; cursor: pointer; position: relative;
}
.nav-toggle span {
  position: absolute; left: 10px; right: 10px; height: 1.8px;
  background: var(--ink); border-radius: 2px; transition: transform .22s, opacity .18s;
}
.nav-toggle span:nth-child(1) { top: 12px; }
.nav-toggle span:nth-child(2) { top: 18px; }
.nav-toggle span:nth-child(3) { top: 24px; }

.nav-check { position: absolute; opacity: 0; pointer-events: none; }
.nav-check:focus-visible + .site-header-inner .nav-toggle { outline: 2px solid var(--jade); outline-offset: 2px; }
.nav-check:checked ~ .site-header-inner .nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-check:checked ~ .site-header-inner .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-check:checked ~ .site-header-inner .nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-check:checked ~ .site-header-inner .nav {
  display: block; position: absolute; top: var(--header-h); left: 0; right: 0;
  background: #fff; border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-lg); padding: 12px 24px 20px;
  max-height: calc(100vh - var(--header-h)); overflow-y: auto;
}
.nav-check:checked ~ .site-header-inner .nav ul { flex-direction: column; gap: 2px; }
.nav-check:checked ~ .site-header-inner .nav .sub {
  position: static; opacity: 1; visibility: visible; transform: none;
  box-shadow: none; border: 0; padding: 0 0 0 12px; min-width: 0;
  display: none;
}
.nav-check:checked ~ .site-header-inner .nav .has-sub:has(.submenu-check:checked) .sub { display: block; }
.nav-check:checked ~ .site-header-inner .header-search { margin-top: 12px; }
.nav-check:checked ~ .site-header-inner .header-search input { width: 100%; }

/* =============================================================
   Hero
   ============================================================= */
.hero {
  background:
    radial-gradient(1100px 380px at 12% -12%, rgba(31, 107, 83, .09), transparent 62%),
    radial-gradient(900px 340px at 92% -6%, rgba(185, 136, 74, .09), transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 66px 0 60px;
}
.hero-inner { max-width: 780px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.74rem; font-weight: 650; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--jade);
  background: var(--jade-soft); padding: 6px 13px; border-radius: 100px;
  margin-bottom: 20px;
}
.hero h1 { margin-bottom: 18px; }
.hero-lede {
  font-size: clamp(1.02rem, .96rem + .35vw, 1.18rem);
  color: var(--ink-2); max-width: 66ch; margin-bottom: 26px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 34px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 100px;
  font-size: 0.93rem; font-weight: 600; border: 1px solid transparent;
  cursor: pointer; transition: transform .12s, box-shadow .18s, background .18s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: var(--jade); color: #fff;
  box-shadow: 0 2px 10px rgba(31, 107, 83, .22);
}
.btn-primary:hover { background: var(--jade-dark); color: #fff; }
.btn-ghost { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--jade); color: var(--jade-dark); box-shadow: var(--shadow-sm); }

.hero-stats {
  display: flex; flex-wrap: wrap; gap: 30px;
  padding-top: 26px; border-top: 1px solid var(--line);
}
.hero-stat b {
  display: block; font-family: var(--font-serif); font-size: 1.5rem;
  color: var(--ink); line-height: 1.2;
}
.hero-stat span { font-size: 0.8rem; color: var(--muted); }

/* =============================================================
   Section headings
   ============================================================= */
.section { padding: 56px 0; }
.section-alt { background: var(--bg-soft); border-block: 1px solid var(--line); }
.section-head { margin-bottom: 30px; }
.section-head h2 { margin-bottom: 8px; margin-top: 0; }
.section-head p { color: var(--muted); max-width: 62ch; margin: 0; font-size: 0.97rem; }

/* =============================================================
   Cards
   ============================================================= */
.card-grid {
  display: grid; gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(288px, 1fr));
}
.card-grid.cols-3 { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.card-grid.cols-2 { grid-template-columns: repeat(auto-fill, minmax(420px, 1fr)); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 24px 24px 22px; display: flex; flex-direction: column;
  transition: border-color .18s, box-shadow .18s, transform .18s;
}
a.card:hover {
  border-color: rgba(31, 107, 83, .38); box-shadow: var(--shadow);
  transform: translateY(-2px); text-decoration: none;
}
.card h3 { margin: 0 0 8px; font-size: 1.08rem; }
.card h3 a { color: var(--ink); }
a.card:hover h3 a { color: var(--jade-dark); }
.card p { color: var(--muted); font-size: 0.92rem; margin: 0 0 14px; flex: 1; }
.card-foot {
  font-size: 0.79rem; color: var(--muted-2);
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  padding-top: 12px; border-top: 1px solid var(--line-2);
}
.card-badge {
  display: inline-block; font-size: 0.7rem; font-weight: 650;
  letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--jade); background: var(--jade-soft);
  padding: 3px 9px; border-radius: 100px;
}
.card-badge.sand { color: #8a6229; background: var(--sand-soft); }
.card-thumb {
  width: 100%; aspect-ratio: 16 / 9; object-fit: cover;
  border-radius: var(--r) var(--r) 0 0; margin: -24px -24px 18px;
  width: calc(100% + 48px);
}
.card-body-pad { padding: 0; }
.card-with-img { padding: 0; overflow: hidden; }
.card-with-img .card-inner { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }

/* Tool card */
.tool-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 22px; display: flex; gap: 15px; align-items: flex-start;
  transition: border-color .18s, box-shadow .18s;
}
.tool-card:hover { border-color: rgba(31, 107, 83, .38); box-shadow: var(--shadow); text-decoration: none; }
.tool-icon {
  width: 44px; height: 44px; flex-shrink: 0; border-radius: 11px;
  display: grid; place-items: center; background: var(--jade-soft); color: var(--jade);
}
.tool-icon svg { width: 22px; height: 22px; }
.tool-card h3 { margin: 0 0 5px; font-size: 1.02rem; }
.tool-card p { margin: 0; font-size: 0.87rem; color: var(--muted); }
.tool-card .card-foot { border: 0; padding-top: 8px; }

/* =============================================================
   Article layout
   ============================================================= */
.article-hero { padding: 46px 0 34px; border-bottom: 1px solid var(--line); }
.article-hero .breadcrumb { margin-bottom: 16px; }
.article-hero h1 { max-width: 22ch; }
.article-meta {
  display: flex; flex-wrap: wrap; gap: 8px 20px;
  font-size: 0.85rem; color: var(--muted); margin-top: 18px;
}
.article-meta b { color: var(--ink-2); font-weight: 600; }

.breadcrumb { font-size: 0.83rem; color: var(--muted); }
.breadcrumb ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.breadcrumb li + li::before { content: "/"; margin-right: 6px; color: var(--muted-2); }

.article-layout {
  display: grid; grid-template-columns: minmax(0, 1fr) 300px;
  gap: 52px; padding-top: 42px; align-items: start;
}
.article-body { max-width: 72ch; font-size: 1.03rem; }
.article-body > *:first-child { margin-top: 0; }
.article-body h2 { padding-top: 6px; }
.article-body h3 { color: var(--ink); }
.article-body ul, .article-body ol { padding-left: 1.35em; margin: 0 0 1.25em; }
.article-body li { margin-bottom: 0.5em; }
.article-body li::marker { color: var(--jade); }

.article-body blockquote {
  margin: 1.7em 0; padding: 18px 22px;
  background: var(--bg-sand); border-left: 3px solid var(--sand);
  border-radius: 0 var(--r) var(--r) 0; color: var(--ink-2); font-size: 0.97rem;
}
.article-body blockquote p:last-child { margin-bottom: 0; }

.article-body table {
  width: 100%; border-collapse: collapse; margin: 1.6em 0; font-size: 0.92rem;
  display: block; overflow-x: auto;
}
.article-body th, .article-body td {
  border: 1px solid var(--line); padding: 10px 13px; text-align: left; vertical-align: top;
}
.article-body th { background: var(--bg-soft); font-weight: 650; color: var(--ink); }
.article-body tbody tr:nth-child(even) { background: #fcfdfc; }

.article-body figure { margin: 1.8em 0; }
.article-body figcaption { font-size: 0.82rem; color: var(--muted); margin-top: 8px; font-style: italic; }

/* Answer box — GEO / featured snippet target */
.answer-box {
  background: var(--bg-soft); border: 1px solid var(--line);
  border-left: 4px solid var(--jade);
  border-radius: var(--r); padding: 22px 24px; margin: 0 0 30px;
}
.answer-box .answer-label {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--jade); margin-bottom: 9px;
}
.answer-box p { margin-bottom: 0; font-size: 1rem; }
.answer-box p + p { margin-top: 0.8em; }

/* Key takeaways */
.takeaways {
  background: var(--sand-soft); border: 1px solid #ecdfc9;
  border-radius: var(--r); padding: 22px 24px; margin: 26px 0 32px;
}
.takeaways h2 {
  margin: 0 0 12px; font-size: 1.08rem; color: var(--ink);
}
.takeaways ol { margin: 0; padding-left: 1.3em; }
.takeaways li { margin-bottom: 8px; font-size: 0.96rem; }
.takeaways li::marker { color: var(--sand); font-weight: 700; }
.takeaways li:last-child { margin-bottom: 0; }

/* GEO: at-a-glance fact table */
.glance-table {
  margin: 0 0 30px; font-size: 0.92rem;
  border: 1px solid var(--line); border-radius: var(--r); overflow: hidden;
}
.glance-table caption {
  caption-side: top; text-align: left; padding: 12px 16px;
  background: var(--ink); color: #fff; font-weight: 650; font-size: 0.82rem;
  letter-spacing: 0.08em; text-transform: uppercase; font-family: var(--font-sans);
}
.glance-table th {
  width: 30%; background: var(--bg-soft); font-weight: 650; color: var(--ink);
  vertical-align: top; white-space: normal;
}
.glance-table td { vertical-align: top; }

/* TOC */
.toc {
  background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: var(--r); padding: 20px 22px; margin: 0 0 32px;
}
.toc h2 { margin: 0 0 12px; font-size: 0.95rem; }
.toc ol { list-style: none; margin: 0; padding: 0; counter-reset: toc; }
.toc li { counter-increment: toc; margin-bottom: 8px; font-size: 0.92rem; }
.toc li::before {
  content: counter(toc) "."; color: var(--jade); font-weight: 700; margin-right: 7px;
}
.toc a { color: var(--ink-2); }
.toc a:hover { color: var(--jade-dark); }

/* FAQ */
.faq { margin: 34px 0; }
.faq h2 { margin-bottom: 4px; }
.faq-item {
  border-bottom: 1px solid var(--line); padding: 4px 0;
}
.faq-item summary {
  cursor: pointer; padding: 15px 34px 15px 0; position: relative;
  font-weight: 600; color: var(--ink); list-style: none; font-size: 1rem;
  font-family: var(--font-serif);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; position: absolute; right: 4px; top: 50%;
  transform: translateY(-50%); font-size: 1.3rem; color: var(--jade);
  font-weight: 400; transition: transform .2s;
}
.faq-item[open] summary::after { content: "\2212"; }
.faq-answer { padding: 0 0 16px; color: var(--ink-2); font-size: 0.96rem; }
.faq-answer p:last-child { margin-bottom: 0; }

/* Sidebar */
.sidebar { position: sticky; top: calc(var(--header-h) + 22px); }
.side-widget {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 20px 22px; margin-bottom: 20px;
}
.side-widget h3 {
  margin: 0 0 12px; font-size: 0.76rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted);
  font-family: var(--font-sans);
}
.side-widget ul { list-style: none; margin: 0; padding: 0; }
.side-widget li { margin-bottom: 9px; font-size: 0.92rem; line-height: 1.5; }
.side-widget li:last-child { margin-bottom: 0; }
.side-widget a { color: var(--ink-2); }
.side-widget a:hover { color: var(--jade-dark); }
.side-widget p { font-size: 0.9rem; color: var(--muted); margin: 0 0 12px; }
.side-tool {
  display: flex; align-items: center; gap: 10px; padding: 9px 0;
  border-bottom: 1px solid var(--line-2); font-size: 0.9rem;
}
.side-tool:last-child { border-bottom: 0; }
.side-tool .dot {
  width: 26px; height: 26px; border-radius: 7px; background: var(--jade-soft);
  color: var(--jade); display: grid; place-items: center; flex-shrink: 0;
}
.side-tool .dot svg { width: 14px; height: 14px; }
.side-tool a { color: var(--ink-2); font-weight: 550; }
.side-tool a:hover { color: var(--jade-dark); }

.author-box { display: flex; gap: 13px; align-items: flex-start; }
.author-avatar {
  width: 46px; height: 46px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(140deg, var(--jade) 0%, var(--jade-dark) 100%);
  color: #fff; display: grid; place-items: center; font-weight: 700;
  font-family: var(--font-serif); font-size: 1.05rem;
}
.author-box h4 { margin: 0 0 3px; font-size: 0.95rem; font-family: var(--font-sans); }
.author-box p { margin: 0; font-size: 0.85rem; color: var(--muted); }

/* Inline links block */
.inline-tools {
  background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 22px 24px; margin: 34px 0;
}
.inline-tools h2 { margin: 0 0 6px; font-size: 1.1rem; }
.inline-tools > p { font-size: 0.92rem; color: var(--muted); margin-bottom: 16px; }
.inline-tools .tool-card { background: #fff; margin-bottom: 10px; }
.inline-tools .tool-card:last-child { margin-bottom: 0; }

/* =============================================================
   Ads
   ============================================================= */
.ad {
  margin: 30px auto; text-align: center;
  min-height: 0; overflow: hidden;
}
.ad-label {
  display: block; font-size: 0.64rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted-2); margin-bottom: 6px;
}
.ad-slot { display: block; margin: 0 auto; }
.ad-responsive { max-width: 100%; }
.ad-container { max-width: 100%; }
.ad-container > ins {
  display: block; width: 100%;
}
.ad-sidebar {
  margin: 0 0 20px; padding: 12px;
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--r);
}
.ad-sidebar .ad-label { margin-bottom: 8px; }
.ad-sidebar ins { display: block; width: 100%; }

/* =============================================================
   Tools
   ============================================================= */
.tool-hero { padding: 44px 0 34px; border-bottom: 1px solid var(--line); }
.tool-hero h1 { max-width: 20ch; }
.tool-hero p.tool-lede { font-size: 1.06rem; color: var(--ink-2); max-width: 68ch; }

.tool-panel {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 28px; margin: 28px 0; box-shadow: var(--shadow-sm);
}
.tool-panel h2 { margin-top: 0; font-size: 1.22rem; }

.field { margin-bottom: 18px; }
.field label {
  display: block; font-size: 0.87rem; font-weight: 600;
  color: var(--ink); margin-bottom: 7px;
}
.field .hint { font-size: 0.79rem; color: var(--muted); font-weight: 400; display: block; margin-top: 3px; }
.field input[type="text"],
.field input[type="number"],
.field input[type="date"],
.field select,
.field textarea {
  width: 100%; padding: 11px 14px; font-size: 0.96rem; font-family: inherit;
  border: 1px solid var(--line); border-radius: var(--r-sm);
  background: #fff; color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--jade); box-shadow: 0 0 0 3px rgba(31, 107, 83, .1);
}
.field-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }

.btn-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }

.result-box {
  background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: var(--r); padding: 22px 24px; margin-top: 22px;
}
.result-box:empty { display: none; }
.result-box h3 { margin-top: 0; }
.result-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px; margin: 16px 0;
}
.result-cell {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r);
  padding: 14px 16px;
}
.result-cell .label {
  font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted-2); margin-bottom: 5px; font-weight: 650;
}
.result-cell .value {
  font-family: var(--font-serif); font-size: 1.3rem; color: var(--jade-dark);
  font-weight: 600; line-height: 1.2;
}
.result-cell .sub { font-size: 0.8rem; color: var(--muted); margin-top: 4px; }
.result-note { font-size: 0.9rem; color: var(--muted); margin-bottom: 0; }

/* Compass / bagua visual */
.compass-wrap { display: flex; flex-direction: column; align-items: center; gap: 18px; margin: 8px 0 4px; }
.compass {
  width: 230px; height: 230px; border-radius: 50%;
  background: conic-gradient(from -22.5deg, #e8f2ed 0deg 45deg, #fff 45deg 90deg);
  border: 2px solid var(--line); position: relative;
  box-shadow: var(--shadow); display: grid; place-items: center;
}
.compass-needle {
  width: 3px; height: 178px; background: var(--ink); border-radius: 3px;
  position: relative; transform-origin: center center;
}
.compass-needle::before, .compass-needle::after {
  content: ""; position: absolute; left: 50%; transform: translateX(-50%);
  border-left: 8px solid transparent; border-right: 8px solid transparent;
}
.compass-needle::before { top: -2px; border-bottom: 16px solid var(--jade); }
.compass-needle::after { bottom: -2px; border-top: 16px solid var(--ink-2); }
.compass-labels { position: absolute; inset: 0; pointer-events: none; }
.compass-labels span {
  position: absolute; font-size: 0.7rem; font-weight: 700; color: var(--muted);
  transform: translate(-50%, -50%);
}

/* Room grid / layout generator */
.room-grid {
  display: grid; gap: 8px; background: var(--bg-soft);
  border: 1px solid var(--line); border-radius: var(--r); padding: 10px;
  margin: 16px 0; touch-action: manipulation;
}
.room-cell {
  aspect-ratio: 1; border: 1px dashed var(--line); border-radius: var(--r-sm);
  background: #fff; display: grid; place-items: center; font-size: 0.68rem;
  color: var(--muted); cursor: pointer; transition: background .15s, border-color .15s;
  user-select: none; text-align: center; padding: 2px;
}
.room-cell:hover { border-color: var(--jade); background: var(--jade-soft); }
.room-cell.is-sel { background: var(--jade); color: #fff; border-color: var(--jade-dark); font-weight: 600; }
.room-cell.is-door { background: var(--sand-soft); border-color: var(--sand); color: #8a6229; }
.room-cell.is-bad { background: #fbeee9; border-color: var(--warn); color: var(--warn); }
.room-cell.is-good { background: var(--jade-soft); border-color: var(--jade); color: var(--jade-dark); }

.legend { display: flex; flex-wrap: wrap; gap: 14px; font-size: 0.8rem; color: var(--muted); margin-top: 10px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 13px; height: 13px; border-radius: 3px; border: 1px solid var(--line); display: inline-block; }

/* Checklist */
.checklist { list-style: none; margin: 0; padding: 0; }
.checklist li { margin-bottom: 8px; }
.checklist label {
  display: flex; gap: 10px; align-items: flex-start; cursor: pointer;
  padding: 11px 14px; border: 1px solid var(--line); border-radius: var(--r-sm);
  font-size: 0.94rem; background: #fff; transition: background .15s, border-color .15s;
}
.checklist label:hover { border-color: var(--jade); background: var(--bg-soft); }
.checklist input { margin-top: 4px; accent-color: var(--jade); flex-shrink: 0; }
.checklist input:checked + span { color: var(--muted-2); text-decoration: line-through; }

.progress-bar {
  height: 7px; background: var(--line-2); border-radius: 100px;
  overflow: hidden; margin: 14px 0 6px;
}
.progress-bar i { display: block; height: 100%; background: var(--jade); border-radius: 100px; transition: width .3s; }

/* =============================================================
   Category / tag chips
   ============================================================= */
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-block; padding: 6px 13px; border-radius: 100px;
  background: var(--bg-soft); border: 1px solid var(--line);
  font-size: 0.86rem; color: var(--ink-2);
}
.chip:hover { background: var(--jade-soft); border-color: rgba(31,107,83,.3); color: var(--jade-dark); text-decoration: none; }
.chip.is-active { background: var(--jade); border-color: var(--jade); color: #fff; }

/* Filter bar */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  padding: 18px 0 26px; border-bottom: 1px solid var(--line); margin-bottom: 30px;
}
.filter-bar label { font-size: 0.8rem; color: var(--muted); margin-right: 4px; }

/* =============================================================
   Footer
   ============================================================= */
.site-footer {
  background: var(--bg-soft); border-top: 1px solid var(--line);
  padding: 52px 0 26px; margin-top: 40px;
}
.footer-cols {
  display: grid; grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 36px; padding-bottom: 34px;
}
.footer-cols h4 {
  margin: 0 0 14px; font-size: 0.76rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted);
  font-family: var(--font-sans);
}
.footer-cols ul { list-style: none; margin: 0; padding: 0; }
.footer-cols li { margin-bottom: 8px; font-size: 0.9rem; }
.footer-cols a { color: var(--ink-2); }
.footer-cols a:hover { color: var(--jade-dark); }
.footer-about p { font-size: 0.9rem; color: var(--muted); margin: 0 0 14px; max-width: 44ch; }
.footer-social { display: flex; gap: 8px; }
.footer-social a {
  width: 34px; height: 34px; border-radius: 8px; background: #fff;
  border: 1px solid var(--line); display: grid; place-items: center; color: var(--muted);
}
.footer-social a:hover { border-color: var(--jade); color: var(--jade); }
.footer-social svg { width: 16px; height: 16px; }

.footer-ext {
  border-top: 1px solid var(--line); padding-top: 22px;
  font-size: 0.84rem; color: var(--muted); line-height: 1.9;
}
.footer-ext a { color: var(--ink-2); }
.footer-ext a:hover { color: var(--jade-dark); }
.footer-ext strong { color: var(--ink); font-weight: 650; }

.footer-bottom {
  border-top: 1px solid var(--line); margin-top: 22px; padding-top: 20px;
  display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between;
  font-size: 0.82rem; color: var(--muted-2);
}
.disclosure-note {
  font-size: 0.82rem; color: var(--muted); background: var(--bg-sand);
  border: 1px solid #ecdfc9; border-radius: var(--r); padding: 14px 16px; margin-top: 18px;
}

/* =============================================================
   Pagination
   ============================================================= */
.pagination { display: flex; gap: 8px; justify-content: center; margin: 40px 0 0; flex-wrap: wrap; }
.pagination a, .pagination span {
  padding: 8px 14px; border: 1px solid var(--line); border-radius: var(--r-sm);
  font-size: 0.9rem; background: #fff; color: var(--ink-2); min-width: 40px; text-align: center;
}
.pagination a:hover { border-color: var(--jade); color: var(--jade-dark); text-decoration: none; }
.pagination .is-current { background: var(--jade); border-color: var(--jade); color: #fff; font-weight: 600; }

/* =============================================================
   Misc components
   ============================================================= */
.note {
  border-left: 3px solid var(--jade); background: var(--jade-soft);
  padding: 15px 18px; border-radius: 0 var(--r) var(--r) 0;
  font-size: 0.93rem; margin: 22px 0;
}
.note p:last-child { margin-bottom: 0; }
.note p:first-child { margin-top: 0; }

.tag-pills { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }

.compare-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; margin: 22px 0; }
.compare-table th, .compare-table td { padding: 11px 14px; border: 1px solid var(--line); text-align: left; }
.compare-table thead th { background: var(--ink); color: #fff; font-weight: 600; }
.compare-table tbody th { background: var(--bg-soft); color: var(--ink); font-weight: 600; }

.steps { counter-reset: step; list-style: none; padding: 0; margin: 22px 0; }
.steps > li {
  counter-increment: step; position: relative;
  padding: 0 0 22px 52px; margin-bottom: 0;
}
.steps > li::before {
  content: counter(step); position: absolute; left: 0; top: 0;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--jade-soft); color: var(--jade-dark);
  display: grid; place-items: center; font-weight: 700; font-size: 0.92rem;
  font-family: var(--font-sans);
}
.steps > li::after {
  content: ""; position: absolute; left: 15.5px; top: 36px; bottom: 6px;
  width: 1px; background: var(--line);
}
.steps > li:last-child { padding-bottom: 0; }
.steps > li:last-child::after { display: none; }
.steps h3 { margin: 2px 0 6px; font-size: 1.05rem; }

.pill-callout {
  display: flex; gap: 13px; align-items: flex-start;
  background: var(--bg-sand); border: 1px solid #ecdfc9;
  border-radius: var(--r); padding: 17px 20px; margin: 22px 0;
}
.pill-callout .ico { font-size: 1.3rem; line-height: 1.2; }
.pill-callout p { margin: 0; font-size: 0.94rem; }

.glossary { margin: 26px 0; }
.glossary dt { font-weight: 650; color: var(--ink); margin-top: 14px; }
.glossary dd { margin: 3px 0 0; color: var(--muted); font-size: 0.95rem; }

/* Breadcrumb bar on listings */
.page-head { padding: 44px 0 30px; border-bottom: 1px solid var(--line); }
.page-head h1 { margin-bottom: 12px; }
.page-head .lede { font-size: 1.04rem; color: var(--muted); max-width: 68ch; margin: 0; }

/* =============================================================
   Responsive
   ============================================================= */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; gap: 36px; }
  .sidebar { position: static; }
  .footer-cols { grid-template-columns: 1fr 1fr; gap: 30px; }
}

@media (max-width: 860px) {
  .nav { display: none; }
  .nav-toggle { display: block; }
  .header-search { display: none; }
  .nav-check:checked ~ .site-header-inner .header-search { display: flex; }
  .hero { padding: 46px 0 44px; }
  .section { padding: 42px 0; }
  .brand-text small { display: none; }
  .submenu-label { display: block; }
  .nav .has-sub { position: relative; }
  .nav .has-sub > a { display: none; }
  .nav .has-sub > .submenu-label::after {
    content: ""; display: inline-block; width: 5px; height: 5px;
    border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg) translateY(-2px); margin-left: 8px; opacity: 0.55;
  }
  .submenu-check:checked ~ .submenu-label::after { transform: rotate(-135deg) translateY(-2px); }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { padding: 0 18px; }
  .footer-cols { grid-template-columns: 1fr; }
  .tool-panel { padding: 20px 18px; }
  .hero-actions .btn { flex: 1; justify-content: center; }
  .article-body { font-size: 1rem; }
  .card-grid { grid-template-columns: 1fr; }
}

/* Print */
@media print {
  .site-header, .site-footer, .ad, .sidebar, .inline-tools { display: none !important; }
  body { font-size: 12pt; color: #000; }
  .article-layout { grid-template-columns: 1fr; }
}