:root {
  --forest-950: #102b24; --forest-800: #173d32; --forest-650: #2d5b4b; --forest-100: #e5efe9;
  --lilac-500: #8f78a8; --lilac-200: #d9cce7; --lilac-100: #eee8f4; --paper: #fbfaf5;
  --ink: #1f2723; --muted: #5f6a64; --line: #cbd4cf; --white: #fff; --shadow: 0 18px 45px rgba(16,43,36,.09);
  --wrap: min(1180px, calc(100% - 40px));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: ui-serif, Georgia, "Songti SC", "Noto Serif CJK SC", serif; line-height: 1.72; overflow-x: hidden; }
a { color: inherit; text-underline-offset: .22em; }
img, svg { display: block; max-width: 100%; height: auto; }
p, li, a, h1, h2, h3, span { overflow-wrap: anywhere; }
button, input { font: inherit; }
button, .button { min-height: 44px; }
.wrap { width: var(--wrap); margin-inline: auto; max-width: 100%; }
.skip-link { position: fixed; left: 12px; top: -80px; z-index: 99; background: var(--white); padding: 10px 14px; }
.skip-link:focus { top: 12px; }
.utility-bar { background: var(--forest-950); color: #dbe8e1; font-family: ui-sans-serif, system-ui, sans-serif; font-size: .78rem; letter-spacing: .04em; }
.utility-bar .wrap { display: flex; justify-content: space-between; gap: 20px; padding-block: 7px; }
.site-header { position: relative; z-index: 20; background: rgba(251,250,245,.97); border-bottom: 1px solid var(--line); }
.header-row { display: flex; align-items: center; gap: 28px; min-height: 86px; }
.brand { display: grid; flex: 0 0 auto; text-decoration: none; font-size: 1.18rem; font-weight: 700; color: var(--forest-950); }
.brand-kicker { font: 700 .64rem/1.2 ui-sans-serif, system-ui, sans-serif; letter-spacing: .16em; color: var(--lilac-500); }
.primary-nav { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 8px 20px; margin-left: auto; font: 650 .88rem/1.3 ui-sans-serif, system-ui, sans-serif; }
.primary-nav a { text-decoration: none; padding-block: 10px; border-bottom: 2px solid transparent; }
.primary-nav a:hover, .primary-nav a:focus-visible { color: var(--lilac-500); border-color: var(--lilac-500); }
.menu-toggle { display: none; margin-left: auto; border: 1px solid var(--forest-650); border-radius: 4px; background: transparent; color: var(--forest-950); padding: 8px 14px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 7px; padding-block: 18px 0; color: var(--muted); font: .78rem/1.5 ui-sans-serif, system-ui, sans-serif; }
.page-hero { border-bottom: 1px solid var(--line); padding: 70px 0 64px; background: linear-gradient(115deg, var(--forest-100), var(--paper) 58%, var(--lilac-100)); }
.home-hero { padding: 86px 0 74px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(260px, .8fr); gap: clamp(32px, 8vw, 100px); align-items: center; }
.hero-copy { min-width: 0; }
.eyebrow, .section-note { margin: 0 0 12px; color: var(--lilac-500); font: 800 .72rem/1.4 ui-sans-serif, system-ui, sans-serif; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3 { color: var(--forest-950); line-height: 1.22; text-wrap: balance; }
h1 { margin: 0; max-width: 16ch; font-size: clamp(2.4rem, 8vw, 6.8rem); letter-spacing: -.045em; }
.page-hero:not(.home-hero) h1 { max-width: 23ch; font-size: clamp(2.15rem, 5vw, 4.2rem); }
h2 { margin: 0 0 18px; font-size: clamp(1.65rem, 3.2vw, 2.65rem); }
h3 { margin: 0 0 10px; font-size: 1.15rem; }
.hero-lead { max-width: 660px; margin: 26px 0 0; font-size: clamp(1.02rem, 2vw, 1.25rem); color: #34453d; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--forest-800); border-radius: 3px; padding: 10px 18px; text-decoration: none; cursor: pointer; }
.button.primary { background: var(--forest-800); color: var(--white); }
.button.quiet { background: transparent; color: var(--forest-950); }
.hero-mark { width: min(100%, 480px); margin-inline: auto; filter: drop-shadow(0 22px 25px rgba(16,43,36,.14)); }
.page-content { padding-block: 70px 90px; }
.page-content > section { margin-top: 84px; }
.page-content > section:first-child { margin-top: 0; }
.page-content p { max-width: 74ch; }
.intro-panel { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 50px; padding: 34px; background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow); }
.intro-panel p:first-child { margin-top: 0; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 28px; border-bottom: 1px solid var(--line); }
.section-heading > p { max-width: 44ch; color: var(--muted); }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.card-grid.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.label-card { position: relative; min-width: 0; padding: 32px 24px 24px; background: var(--white); border: 1px solid var(--line); border-top: 5px solid var(--lilac-200); box-shadow: 0 9px 24px rgba(16,43,36,.05); }
.card-label { display: inline-block; margin-bottom: 18px; padding: 4px 8px; background: var(--lilac-100); color: #5a456d; font: 750 .68rem/1.3 ui-sans-serif, system-ui, sans-serif; letter-spacing: .08em; }
.label-card p { color: var(--muted); }
.text-link { color: var(--forest-650); font-weight: 700; }
.deep-dive { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(240px, .5fr); gap: 40px; padding: 42px; background: var(--forest-950); color: #e8f0ec; }
.deep-dive h2 { color: var(--white); }
.margin-note { align-self: start; padding: 24px; color: var(--ink); background: var(--lilac-100); border-left: 5px solid var(--lilac-500); }
.note-title { margin-top: 0; color: var(--lilac-500); font: 800 .75rem/1.4 ui-sans-serif, system-ui, sans-serif; letter-spacing: .1em; text-transform: uppercase; }
.numbered, .step-list { list-style: none; margin: 26px 0 0; padding: 0; display: grid; gap: 14px; }
.numbered li, .step-list li { display: grid; grid-template-columns: 42px 1fr; gap: 14px; align-items: start; }
.numbered li::before, .step-list li > span { display: grid; place-items: center; width: 36px; height: 36px; border: 1px solid currentColor; border-radius: 50%; font: 700 .8rem/1 ui-sans-serif, system-ui, sans-serif; }
.numbered li:nth-child(1)::before { content: "1"; }.numbered li:nth-child(2)::before { content: "2"; }.numbered li:nth-child(3)::before { content: "3"; }.numbered li:nth-child(4)::before { content: "4"; }
.numbered li::before { grid-column: 1; grid-row: 1 / span 2; }
.numbered li > strong { grid-column: 2; grid-row: 1; }
.numbered li > span { grid-column: 2; grid-row: 2; }
.numbered strong, .numbered span { display: block; }.numbered span { color: #bfd0c7; }
.step-list li { padding: 14px 0; border-bottom: 1px solid var(--line); }.step-list p { margin: 5px 0 0; }
.article-index { list-style: none; padding: 0; columns: 2; column-gap: 48px; }.article-index li { break-inside: avoid; display: grid; gap: 4px; padding: 12px 0; border-bottom: 1px solid var(--line); }.article-index span { color: var(--muted); font: .75rem/1.4 ui-sans-serif, system-ui, sans-serif; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }.tag { display: inline-flex; align-items: center; min-height: 38px; padding: 6px 12px; background: var(--lilac-100); border: 1px solid var(--lilac-200); text-decoration: none; font: 700 .78rem/1.4 ui-sans-serif, system-ui, sans-serif; }
.editor-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }.editor-chip { display: grid; padding: 18px; background: var(--forest-100); text-decoration: none; }.editor-chip span { color: var(--muted); font-size: .82rem; }
.faq-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }.faq-grid > div { padding: 22px; border: 1px solid var(--line); background: var(--white); }
.question-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; padding: 0; list-style: none; counter-reset: question; }.question-list li { padding: 24px; background: var(--lilac-100); border-top: 4px solid var(--lilac-500); }.question-list li::before { counter-increment: question; content: "Q" counter(question); display: block; color: var(--lilac-500); font: 800 .72rem/1 ui-sans-serif, system-ui, sans-serif; margin-bottom: 12px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-bottom: 38px; padding-bottom: 18px; border-bottom: 1px solid var(--line); color: var(--muted); font: .8rem/1.5 ui-sans-serif, system-ui, sans-serif; }
.source-box { margin-top: 54px; padding: 28px; background: var(--forest-100); border: 1px solid var(--line); }
.article-art { margin: 74px 0 0; padding: 18px; background: var(--white); border: 1px solid var(--line); }.article-art img { width: 100%; }.article-art figcaption { margin-top: 12px; color: var(--muted); font: .78rem/1.5 ui-sans-serif, system-ui, sans-serif; }
.checklist-panel { display: grid; grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr); gap: 36px; padding: 34px; background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow); }.check-rows { display: grid; gap: 9px; }.check-row { display: grid; grid-template-columns: 24px 1fr; gap: 12px; align-items: center; min-height: 48px; padding: 8px 12px; background: var(--forest-100); }.check-row input { width: 20px; height: 20px; accent-color: var(--forest-650); }.check-output { color: var(--lilac-500); }.tool-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.site-footer { background: var(--forest-950); color: #d9e5df; padding: 54px 0 20px; }.footer-grid { display: grid; grid-template-columns: 1.5fr .75fr .75fr; gap: 40px; }.footer-grid > div { display: grid; align-content: start; gap: 7px; }.footer-title { color: var(--white); font-size: 1.25rem; font-weight: 700; }.footer-label { color: var(--lilac-200); font: 800 .72rem/1.4 ui-sans-serif, system-ui, sans-serif; letter-spacing: .1em; text-transform: uppercase; }.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 38px; padding-top: 18px; border-top: 1px solid #416056; font: .72rem/1.5 ui-sans-serif, system-ui, sans-serif; }
*:focus-visible { outline: 3px solid #c69df0; outline-offset: 3px; }
@media (max-width: 900px) { .hero-grid, .intro-panel, .deep-dive, .checklist-panel { grid-template-columns: 1fr; }.card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }.editor-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }.hero-mark { width: min(70%, 380px); }.section-heading { align-items: start; flex-direction: column; gap: 0; } }
@media (max-width: 720px) { :root { --wrap: min(100% - 28px, 1180px); }.utility-bar .wrap { align-items: flex-start; flex-direction: column; gap: 3px; }.header-row { min-height: 72px; flex-wrap: wrap; padding-block: 10px; }.menu-toggle { display: inline-flex; align-items: center; }.primary-nav { display: none; flex: 1 0 100%; align-items: stretch; flex-direction: column; gap: 0; padding: 10px 0 16px; }.primary-nav.is-open { display: flex; }.primary-nav a { border-bottom: 1px solid var(--line); }.page-hero, .home-hero { padding: 48px 0; }.hero-grid { gap: 30px; }.hero-mark { width: min(82%, 320px); }.page-content { padding-block: 48px 64px; }.page-content > section { margin-top: 58px; }.intro-panel, .deep-dive, .checklist-panel { padding: 26px 20px; }.card-grid, .card-grid.compact, .faq-grid, .question-list, .footer-grid { grid-template-columns: 1fr; }.article-index { columns: 1; }.footer-bottom { flex-direction: column; }.article-art { margin-inline: 0; }.hero-actions .button { width: 100%; } }
@media (max-width: 390px) { h1 { font-size: clamp(2.2rem, 15vw, 3.45rem); }.page-hero:not(.home-hero) h1 { font-size: 2.15rem; }.brand { font-size: 1.02rem; }.label-card { padding-inline: 18px; }.breadcrumbs { font-size: .7rem; } }
@media print { .utility-bar, .site-header, .site-footer, .hero-actions, .tool-actions, .article-art { display: none !important; } body { background: #fff; }.page-hero { padding: 12px 0; }.page-content { padding: 10px 0; }.checklist-panel { box-shadow: none; } }