/* ---------- Design tokens ---------- */
:root {
  --c-ink: #0a0e1a;
  --c-ink-2: #1b2030;
  --c-ink-3: #3a414f;
  --c-muted: #6b7280;
  --c-line: #e8e3d7;
  --c-line-strong: #d6cfbf;
  --c-bg: #faf8f3;
  --c-bg-card: #ffffff;
  --c-primary: #0b3d91;
  --c-primary-2: #1456c1;
  --c-primary-tint: #e9efff;
  --c-accent: #d97706;
  --c-accent-2: #f59e0b;
  --c-accent-tint: #fff5e1;
  --c-success: #047857;
  --c-danger: #b91c1c;
  --radius: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 2px rgba(10, 14, 26, 0.04);
  --shadow-md: 0 6px 18px rgba(10, 14, 26, 0.06), 0 1px 3px rgba(10, 14, 26, 0.04);
  --shadow-lg: 0 16px 40px rgba(10, 14, 26, 0.10), 0 2px 6px rgba(10, 14, 26, 0.05);
  --font-serif: "Fraunces", "Source Serif Pro", "Iowan Old Style", "Apple Garamond", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- Reset + base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--c-ink);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary); text-decoration: none; }
a:hover { color: var(--c-primary-2); text-decoration: underline; text-underline-offset: 3px; }
h1, h2, h3, h4 { color: var(--c-ink); margin: 0 0 0.5em; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-family: var(--font-serif); font-weight: 600; font-size: clamp(2.1rem, 4.5vw, 3.2rem); line-height: 1.1; letter-spacing: -0.02em; }
h2 { font-family: var(--font-serif); font-weight: 600; font-size: clamp(1.5rem, 3vw, 2rem); line-height: 1.2; letter-spacing: -0.015em; }
h3 { font-family: var(--font-sans); font-weight: 600; font-size: 1.15rem; line-height: 1.3; letter-spacing: -0.005em; }
h4 { font-family: var(--font-sans); font-weight: 600; font-size: 1rem; }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.25em; }
hr { border: 0; border-top: 1px solid var(--c-line); margin: 2.5em 0; }
table { border-collapse: collapse; width: 100%; margin: 1.5em 0; font-size: 0.95rem; }
th, td { padding: 0.7em 0.9em; border-bottom: 1px solid var(--c-line); text-align: left; vertical-align: top; }
th { background: rgba(217, 119, 6, 0.04); font-weight: 600; color: var(--c-ink-2); font-size: 0.88rem; text-transform: uppercase; letter-spacing: 0.04em; }
tbody tr:hover { background: rgba(217, 119, 6, 0.025); }
code { background: var(--c-primary-tint); color: var(--c-primary); padding: 0.12em 0.4em; border-radius: 4px; font-family: var(--font-mono); font-size: 0.88em; }
pre { background: var(--c-ink); color: #e8eaf0; padding: 1em 1.2em; border-radius: var(--radius); overflow-x: auto; font-family: var(--font-mono); font-size: 0.88rem; line-height: 1.55; }
pre code { background: transparent; color: inherit; padding: 0; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--c-primary); color: #fff; padding: 10px 16px; border-radius: 0 0 6px 0; font-weight: 600; }
.skip-link:focus { left: 0; top: 0; z-index: 100; }

/* ---------- Header ---------- */
.site-header { background: rgba(250, 248, 243, 0.85); backdrop-filter: saturate(180%) blur(10px); -webkit-backdrop-filter: saturate(180%) blur(10px); border-bottom: 1px solid var(--c-line); position: sticky; top: 0; z-index: 50; }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; color: var(--c-ink); font-size: 1.1rem; letter-spacing: -0.01em; font-family: var(--font-serif); }
.brand:hover { text-decoration: none; color: var(--c-ink); }
.brand-mark { color: var(--c-primary); display: inline-flex; background: var(--c-primary-tint); padding: 8px; border-radius: 8px; }
.brand-dot { color: var(--c-accent); }
.primary-nav { display: flex; align-items: center; }
.nav-list { display: flex; gap: 26px; list-style: none; padding: 0; margin: 0; }
.nav-list a { color: var(--c-ink-2); padding: 8px 2px; font-weight: 500; font-size: 0.96rem; position: relative; }
.nav-list a:hover { color: var(--c-primary); text-decoration: none; }
.nav-list a[aria-current="page"] { color: var(--c-primary); }
.nav-list a[aria-current="page"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; background: var(--c-accent); border-radius: 2px; }
.nav-toggle { display: none; background: none; border: 1px solid var(--c-line-strong); padding: 9px 14px; border-radius: 8px; font: inherit; font-weight: 500; color: var(--c-ink-2); cursor: pointer; }
.nav-toggle:hover { background: var(--c-primary-tint); border-color: var(--c-primary); color: var(--c-primary); }
@media (max-width: 760px) {
  .nav-toggle { display: inline-block; }
  .nav-list { display: none; position: absolute; right: 20px; top: 64px; background: #fff; border: 1px solid var(--c-line); flex-direction: column; padding: 14px 18px; border-radius: 12px; box-shadow: var(--shadow-lg); gap: 12px; }
  .nav-list.open { display: flex; }
}

/* ---------- Hero ---------- */
.hero { padding: 64px 0 32px; position: relative; }
.hero-with-image { padding: 56px 0 40px; }
.hero .kicker { color: var(--c-accent); text-transform: uppercase; letter-spacing: 0.12em; font-weight: 600; font-size: 0.78rem; margin: 0 0 14px; display: inline-flex; align-items: center; gap: 8px; }
.hero .kicker::before { content: ""; width: 18px; height: 1.5px; background: var(--c-accent); display: inline-block; }
.hero-title { margin: 0 0 16px; max-width: 24ch; }
.hero-lede { font-size: clamp(1.05rem, 1.6vw, 1.22rem); color: var(--c-ink-3); max-width: 60ch; margin: 0 0 26px; line-height: 1.55; }
.hero-ctas { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-visual { margin-top: 32px; position: relative; }
.hero-visual img { width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); aspect-ratio: 16/9; object-fit: cover; }
.hero-split { padding: 56px 0 32px; }
.hero-split-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.hero-visual-side { margin-top: 0; }
.hero-visual-side img { aspect-ratio: 4/3; }
@media (max-width: 900px) {
  .hero-split-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero-visual-side img { aspect-ratio: 16/9; }
}

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 10px; font-weight: 600; border: 1px solid transparent; font-size: 0.98rem; transition: transform 0.12s ease, box-shadow 0.15s ease, background 0.15s ease; cursor: pointer; }
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--c-primary); color: #fff; box-shadow: 0 2px 0 rgba(11, 61, 145, 0.25); }
.btn-primary:hover { background: var(--c-primary-2); color: #fff; box-shadow: 0 6px 16px rgba(11, 61, 145, 0.25); }
.btn-ghost { background: transparent; color: var(--c-ink); border-color: var(--c-line-strong); }
.btn-ghost:hover { background: #fff; color: var(--c-primary); border-color: var(--c-primary); }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs { padding: 18px 0 0; font-size: 0.88rem; color: var(--c-muted); }
.breadcrumbs ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.breadcrumbs li + li::before { content: "›"; padding-right: 6px; color: var(--c-line-strong); font-weight: 700; }
.breadcrumbs a { color: var(--c-muted); }
.breadcrumbs a:hover { color: var(--c-primary); }

/* ---------- Card grid ---------- */
.card-grid-section { padding: 40px 0; }
.section-title { margin-top: 0; }
.section-intro { color: var(--c-ink-3); max-width: 60ch; margin-top: -0.6em; margin-bottom: 1.5em; }
.card-grid { list-style: none; padding: 0; margin: 0; display: grid; gap: 18px; }
.card-grid.cols-2 { grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); }
.card-grid.cols-3 { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.card-grid.cols-4 { grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); }
.card { background: var(--c-bg-card); border: 1px solid var(--c-line); border-radius: var(--radius); transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease; position: relative; overflow: hidden; }
.card::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: linear-gradient(90deg, var(--c-primary), var(--c-accent)); transform: scaleX(0); transform-origin: left; transition: transform 0.25s ease; }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--c-line-strong); }
.card:hover::before { transform: scaleX(1); }
.card-link { display: block; padding: 22px; color: inherit; }
.card-link:hover { text-decoration: none; color: inherit; }
.card-icon { font-size: 1.6rem; margin-bottom: 10px; line-height: 1; }
.card-title { margin: 0 0 6px; font-size: 1.05rem; color: var(--c-ink); }
.card-desc { color: var(--c-ink-3); font-size: 0.94rem; margin: 0 0 12px; line-height: 1.5; }
.card-cta { color: var(--c-primary); font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 4px; }
.card:hover .card-cta { color: var(--c-accent); }

/* ---------- Prose ---------- */
.prose-wrap { padding: 32px 0 56px; }
.prose { max-width: 740px; }
.prose h2 { margin-top: 1.8em; }
.prose h3 { margin-top: 1.5em; }
.prose ul li, .prose ol li { margin-bottom: 0.4em; }
.prose strong { color: var(--c-ink); }
.prose em { font-family: var(--font-serif); font-style: italic; font-size: 1.02em; }
.callout { background: var(--c-primary-tint); border-left: 4px solid var(--c-primary); padding: 16px 18px; border-radius: 8px; margin: 1.5em 0; }
.callout.warn { background: var(--c-accent-tint); border-color: var(--c-accent); }
.callout.note { background: #f3f1ea; border-color: var(--c-muted); }

/* ---------- TOC ---------- */
.toc { background: var(--c-bg-card); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 16px 18px; margin: 0 0 1.5em; }
.toc-title { font-weight: 600; margin: 0 0 8px; font-size: 0.78rem; color: var(--c-accent); text-transform: uppercase; letter-spacing: 0.1em; }
.toc ol { padding-left: 1.2em; margin: 0; }
.toc li { font-size: 0.95rem; margin-bottom: 0.3em; }
.toc a { color: var(--c-ink-2); }
.toc a:hover { color: var(--c-primary); }

/* ---------- Tools ---------- */
.tool { background: var(--c-bg-card); border: 1px solid var(--c-line); border-radius: var(--radius-lg); padding: 26px; margin: 0 0 26px; box-shadow: var(--shadow-sm); }
.tool .field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 600px) { .tool .field-row { grid-template-columns: 1fr; } }
.field label { display: block; font-weight: 600; margin: 0 0 8px; font-size: 0.92rem; color: var(--c-ink-2); }
.field input, .field select { width: 100%; padding: 12px 14px; border: 1px solid var(--c-line-strong); border-radius: 8px; font: inherit; font-size: 1rem; background: #fff; color: var(--c-ink); transition: border-color 0.15s, box-shadow 0.15s; }
.field input:focus, .field select:focus { outline: none; border-color: var(--c-primary); box-shadow: 0 0 0 3px var(--c-primary-tint); }
.tool-actions { margin-top: 16px; display: flex; gap: 10px; flex-wrap: wrap; }
.result { margin-top: 20px; padding: 20px; border-radius: var(--radius); background: linear-gradient(135deg, var(--c-primary-tint), var(--c-accent-tint)); border: 1px solid var(--c-line); }
.result .big { font-size: 1.85rem; font-weight: 600; color: var(--c-ink); font-family: var(--font-serif); letter-spacing: -0.01em; line-height: 1.15; }
.result .small { color: var(--c-ink-3); margin-top: 4px; }
.result .pill { display: inline-block; background: var(--c-primary); color: #fff; padding: 4px 12px; border-radius: 999px; font-size: 0.82rem; font-weight: 600; margin-right: 6px; margin-bottom: 6px; }
.result .pill:nth-of-type(2) { background: var(--c-accent); }

/* ---------- Calendar table ---------- */
.cal-table { font-variant-numeric: tabular-nums; font-size: 0.96rem; }
.cal-table th, .cal-table td { text-align: center; padding: 10px 6px; }
.cal-table th { background: var(--c-ink); color: #fff; font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; }
.cal-table .weekend { color: var(--c-danger); }
.cal-table .holiday { background: var(--c-accent-tint); font-weight: 600; color: var(--c-accent); }
.cal-table .holiday abbr { text-decoration: none; }
.cal-table .muted { color: var(--c-line-strong); }
.cal-table caption { caption-side: top; text-align: left; font-weight: 600; margin-bottom: 8px; font-family: var(--font-serif); font-size: 1.1rem; }
.cal-table .wk { background: rgba(11, 61, 145, 0.06); color: var(--c-primary); font-size: 0.78rem; font-weight: 600; }

/* ---------- FAQ ---------- */
.faq { padding: 32px 0 56px; background: linear-gradient(180deg, transparent, rgba(217, 119, 6, 0.03)); }
.faq-list { display: grid; gap: 10px; max-width: 820px; }
.faq-item { background: var(--c-bg-card); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 4px 18px; transition: border-color 0.15s; }
.faq-item:hover { border-color: var(--c-line-strong); }
.faq-item summary { padding: 16px 0; font-weight: 600; cursor: pointer; color: var(--c-ink); list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.3rem; color: var(--c-accent); font-weight: 400; transition: transform 0.2s; }
.faq-item[open] summary { color: var(--c-primary); }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer { padding: 0 0 16px; color: var(--c-ink-3); }

/* ---------- Footer ---------- */
.site-footer { background: var(--c-ink); color: #cfd6e3; padding: 48px 0 32px; margin-top: 64px; position: relative; overflow: hidden; }
.site-footer::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: linear-gradient(90deg, var(--c-primary), var(--c-accent)); }
.footer-grid { display: grid; gap: 24px; grid-template-columns: 1.4fr 1fr 1fr; align-items: start; }
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand { font-weight: 700; color: #fff; margin: 0; font-family: var(--font-serif); font-size: 1.2rem; letter-spacing: -0.01em; }
.footer-tag { color: #9aa3b2; margin: 6px 0 0; font-size: 0.94rem; }
.footer-nav { list-style: none; padding: 0; margin: 0; display: flex; gap: 18px; flex-wrap: wrap; }
.footer-nav a { color: #cfd6e3; font-size: 0.94rem; }
.footer-nav a:hover { color: var(--c-accent-2); }
.footer-meta { color: #6b7280; font-size: 0.84rem; grid-column: 1 / -1; margin: 18px 0 0; border-top: 1px solid #1f2937; padding-top: 16px; }

/* ---------- Utilities ---------- */
.muted { color: var(--c-muted); }
.center { text-align: center; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 0; }
.tag { background: var(--c-primary-tint); color: var(--c-primary); padding: 4px 12px; border-radius: 999px; font-size: 0.8rem; font-weight: 600; transition: background 0.15s, color 0.15s; }
.tag:hover { background: var(--c-primary); color: #fff; text-decoration: none; }
.flex-split { display: grid; grid-template-columns: 2fr 1fr; gap: 36px; align-items: start; }
@media (max-width: 900px) { .flex-split { grid-template-columns: 1fr; } }
.sidebar h3 { margin-top: 0; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--c-accent); }
.sidebar { background: var(--c-bg-card); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 18px 20px; position: sticky; top: 88px; box-shadow: var(--shadow-sm); }
.sidebar ul li a { color: var(--c-ink-2); }
.sidebar ul li a:hover { color: var(--c-primary); }

/* ---------- Section banner (small visual header strip) ---------- */
.section-banner { position: relative; border-radius: var(--radius-lg); overflow: hidden; margin: 20px 0 8px; aspect-ratio: 16/5; background: linear-gradient(135deg, var(--c-primary-tint), var(--c-accent-tint)); }
.section-banner img { width: 100%; height: 100%; object-fit: cover; }
.section-banner::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(10, 14, 26, 0.18)); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card, .btn, .faq-item summary::after { transition: none; }
}

/* ---------- Reviews ---------- */
.rating-block { background: var(--c-bg-card); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 18px 20px; margin: 0 0 1.5em; }
.rating-score { font-family: var(--font-serif); font-size: 2.4rem; font-weight: 600; color: var(--c-accent); line-height: 1; }
.rating-score .rating-max { font-size: 1.1rem; color: var(--c-muted); font-family: var(--font-sans); font-weight: 500; }
.proscons { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 1.5em 0; }
@media (max-width: 720px) { .proscons { grid-template-columns: 1fr; } }
.proscons-block { background: var(--c-bg-card); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 18px 20px; }
.proscons-pros { border-left: 4px solid var(--c-success); }
.proscons-cons { border-left: 4px solid var(--c-danger); }
.proscons h3 { margin-top: 0; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.08em; }
.proscons-pros h3 { color: var(--c-success); }
.proscons-cons h3 { color: var(--c-danger); }
.proscons ul { padding-left: 1.2em; margin: 0; }

/* ---------- Howto steps ---------- */
.howto-steps { counter-reset: step; list-style: none; padding-left: 0; }
.howto-steps > li { counter-increment: step; position: relative; padding-left: 56px; margin-bottom: 1.6em; }
.howto-steps > li::before {
  content: counter(step);
  position: absolute; left: 0; top: -2px;
  width: 38px; height: 38px;
  background: var(--c-primary); color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif); font-weight: 600; font-size: 1.15rem;
  box-shadow: 0 4px 12px rgba(11, 61, 145, 0.25);
}
.howto-steps > li:has(strong)::before { background: var(--c-accent); box-shadow: 0 4px 12px rgba(217, 119, 6, 0.25); }
.howto-steps > li:has(strong)::before { background: var(--c-primary); box-shadow: 0 4px 12px rgba(11, 61, 145, 0.25); }