/* TOP / Books revision 2. Page-only styles; shared Chrome and C06 stay intact. */
.home-page { min-width: 0; }
.home-page .home-wrap { width: min(100% - 48px, 1120px); margin-inline: auto; }
.home-page .home-section { padding-block: 72px; }
.home-page main h1,
.home-page main h2,
.home-page main h3 { color: var(--color-ai-900); font-family: var(--font-mincho); font-weight: 500; }
.home-page main h2 { font-size: 2rem; line-height: 1.55; margin-bottom: 24px; letter-spacing: .04em; }
.home-page main h3 { font-size: 1.375rem; line-height: 1.6; }
.home-page main p { max-width: 42em; }
.home-page main p + p { margin-top: 16px; }
.home-page .home-link { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; padding-block: 8px; text-decoration-thickness: 1px; font-size: .9375rem; }
.home-page .home-link > span { flex-shrink: 0; }
.home-page .home-link:hover { text-decoration-thickness: 2px; }
.home-page .home-button { display: inline-flex; justify-content: center; align-items: center; gap: 16px; min-height: 52px; padding: 12px 22px; border: 1px solid var(--color-ai-700); border-radius: 3px; color: var(--color-surface); background: var(--color-ai-700); text-decoration: none; font-weight: 600; line-height: 1.6; }
.home-page .home-button:hover { text-decoration: underline; text-underline-offset: .25em; background: var(--color-ai-900); }
.home-page .home-button > span { flex-shrink: 0; }
.home-page .home-button--secondary { color: var(--color-ai-700); background: transparent; font-weight: 500; }
.home-page .home-button--secondary:hover { background: var(--color-surface); }
.home-page .home-skip-link { position: absolute; top: 8px; left: 16px; max-width: calc(100% - 32px); z-index: 500; padding: 10px 16px; background: var(--color-surface); color: var(--color-ai-900); transform: translateY(calc(-100% - 20px)); }
.home-page .home-skip-link:focus { transform: none; }
/* Warm paper and a landscape hem belong to the introduction, not every section. */
.home-page .home-hero { position: relative; isolation: isolate; padding: 36px 0 96px; background: var(--color-washi-100); }
.home-page .home-hero::before,
.home-page .home-next::before { content: ""; position: absolute; inset: 0; z-index: -1; background: url('/images/assets/bg_washi.png') repeat; background-size: 126px 117px; opacity: .08; pointer-events: none; }
.home-page .home-hero::after { content: ""; position: absolute; inset: auto 0 0; height: 104px; z-index: -1; background: url('/images/today_sumi_landscape.webp') center bottom / cover no-repeat; mask-image: linear-gradient(transparent, #000 35%); pointer-events: none; }
.home-page .home-hero-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 20px 40px; align-items: center; }
.home-page .home-hero h1 { font-size: 2.875rem; line-height: 1.45; letter-spacing: .06em; margin-bottom: 22px; }
.home-page .home-site-title { display: block; font-size: 1.25rem; letter-spacing: .16em; margin-bottom: 12px; }
.home-page .home-title-divider { position: absolute; width: 1px; height: 1px; clip-path: inset(50%); white-space: nowrap; }
.home-page .home-title-line { display: inline-block; }
.home-page .home-definition { font-size: 1.0625rem; }
.home-page .home-free { font-size: .875rem; color: var(--color-gold-text-on-light); }
.home-page .home-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 16px; }
.home-page .home-shortcuts { display: flex; flex-wrap: wrap; gap: 8px 28px; margin-top: 10px; }
.home-page .home-hero-guide { position: relative; display: flex; flex-direction: column; gap: 14px; padding: 12px 12px 0; margin: 0; border: 0; background: transparent; --yasuko-portrait-width: 194px; }
.home-page .home-hero-guide::before { content: ""; position: absolute; width: min(100%, 320px); aspect-ratio: 1; top: -20px; left: 50%; transform: translateX(-50%); background: url('/images/hakke-taiji-bagua-watermark.svg') center / contain no-repeat; opacity: .55; z-index: -1; pointer-events: none; }
.home-page .home-hero-guide .yasuko-guide__portrait { align-self: center; }
.home-page .home-hero-guide .yasuko-guide__body { padding: 14px 18px; border-top: 1px solid var(--color-gold-decorative); background: rgba(255,252,245,.76); }
.home-page .yasuko-guide__name { font-size: .75rem; letter-spacing: .08em; }
.home-page .yasuko-guide__message { font-size: 1rem; }
.home-page .home-today-note { grid-column: 1 / -1; border-top: 1px solid var(--color-border); padding-top: 14px; font-size: .875rem; color: var(--color-ink-600); }
/* Dictionary: an indigo field, with a real six-line example on an ivory plaque. */
.home-page .home-dictionary { padding-block: 64px; color: var(--color-surface); background: var(--color-ai-900); --color-focus: var(--color-focus-on-dark); }
.home-page .home-dictionary-grid { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 64px; align-items: center; }
.home-page .home-dictionary h2 { color: inherit; }
.home-page .home-dictionary .home-link { color: var(--color-surface); }
.home-page .home-dictionary-links { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; margin-top: 28px; }
.home-page .home-button--paper { background: var(--color-surface); color: var(--color-ai-900); border-color: var(--color-surface); }
.home-page .home-button--paper:hover { background: var(--color-washi-100); }
.home-page .home-sequence-links { display: flex; flex-wrap: wrap; gap: 4px 24px; margin-top: 16px; }
.home-page .home-hexagram-example { text-align: center; }
.home-page .home-plaque { min-height: 274px; padding: 38px 28px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 26px; background: url('/images/hakke-detail-plaque-frame.svg') center / 100% 100% no-repeat; color: var(--color-ai-900); }
.home-page .home-plaque p { font-family: var(--font-mincho); font-size: .9375rem; }
.home-page .home-hexagram { width: 112px; display: grid; gap: 10px; color: var(--color-ai-900); }
.home-page .home-yao { display: block; height: 9px; background: currentColor; }
.home-page .home-yao--yin { background: linear-gradient(to right,currentColor 0 41%,transparent 41% 59%,currentColor 59%); }
.home-page .home-hexagram-example figcaption { margin-top: 14px; font-size: .8125rem; color: var(--color-gold-text-on-dark); }
/* Open learning index: no repeated card boxes. */
.home-page .home-lead { margin-bottom: 36px; }
.home-page .home-learning-entry { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 3fr); gap: 24px; padding-block: 28px; border-top: 1px solid var(--color-border); }
.home-page .home-learning-entry h3 { border-left: 2px solid var(--color-gold-decorative); padding-left: 18px; align-self: start; }
.home-page .home-learning-entry .home-link { margin-top: 6px; }
.home-page .home-trigram-guide { --yasuko-portrait-width: 56px; max-width: 760px; margin: 0 0 28px auto; }
.home-page .home-trigram-index { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); column-gap: 28px; list-style: none; padding: 0; margin-bottom: 36px; }
.home-page .home-trigram-index a { display: flex; align-items: center; gap: 14px; min-height: 94px; border-block-end: 1px solid var(--color-border); text-decoration: none; padding: 18px 4px; }
.home-page .home-trigram-index a:hover .home-trigram-label { text-decoration: underline; text-underline-offset: .25em; }
.home-page .home-trigram { display: grid; gap: 5px; width: 40px; flex-shrink: 0; color: var(--color-ink-900); }
.home-page .home-trigram .home-yao { height: 6px; }
.home-page .home-trigram-label { display: grid; }
.home-page .home-trigram-label strong { font: 500 1.5rem/1.4 var(--font-mincho); }
.home-page .home-trigram-label > span { font-size: .8125rem; }
.home-page .home-index-arrow { margin-left: auto; }
.home-page .home-learning-links { display: flex; flex-wrap: wrap; gap: 4px 28px; padding-top: 12px; border-top: 1px solid var(--color-border); }
.home-page .home-books { max-width: 760px; margin: 40px auto 0; padding-top: 32px; border-top: 1px solid var(--color-gold-decorative); }
.home-page .home-books > p { margin-top: 16px; }
.home-page .yasuko-guide[data-display="inline-tip"] .yasuko-guide__portrait { align-self: start; }
.home-page .home-books-guide { --yasuko-portrait-width: 48px; margin-block: 20px 12px; }
/* The shorter reading and trust sections change density without extra imagery. */
.home-page .home-reading { padding-block: 48px; background: var(--color-washi-100); border-block: 1px solid var(--color-border); }
.home-page .home-editorial-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 48px; }
.home-page .home-editorial-grid h2 { font-size: 1.75rem; margin: 0; }
.home-page .home-editorial-grid .home-link { margin-top: 16px; }
.home-page .home-about-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 48px; }
.home-page .home-character-definition { padding-left: 32px; border-left: 1px solid var(--color-gold-decorative); }
.home-page .home-character-definition h3 { margin-bottom: 16px; }
.home-page .home-character-definition .home-link { margin-top: 12px; }
.home-page .home-trust-links { display: flex; flex-wrap: wrap; gap: 4px 24px; margin-top: 12px; }
.home-page .home-faq-link { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 28px; margin-top: 32px; border-top: 1px solid var(--color-border); padding-top: 20px; font-size: .9375rem; }
.home-page .home-next { position: relative; isolation: isolate; padding-block: 64px; border-top: 1px solid var(--color-gold-decorative); background: var(--color-washi-100); }
.home-page .home-closing-inner { max-width: 760px; }
.home-page .home-closing-guide { --yasuko-portrait-width: 128px; background: transparent; border: 0; padding: 0; gap: 32px; margin-block: 28px 20px; }
.home-page .home-closing-guide .yasuko-guide__body { padding-block: 18px; border-block: 1px solid var(--color-gold-decorative); }
.home-page .home-closing-action { text-align: center; }
.home-page .home-note { font-size: .875rem; margin: 10px auto 0; }
@media (max-width: 55em) {
 .home-page .home-hero-grid { column-gap: 24px; }
 .home-page .home-hero h1 { font-size: 2.5rem; }
 .home-page .home-dictionary-grid { gap: 32px; grid-template-columns: minmax(0,1fr) 210px; }
 .home-page .home-trigram-index { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 43em) {
 .home-page .home-wrap { width: calc(100% - 40px); }
 .home-page .home-section { padding-block: 48px; }
 .home-page main h2 { font-size: 1.5rem; margin-bottom: 20px; }
 .home-page main h3 { font-size: 1.25rem; }
 .home-page .home-hero { padding: 28px 0 88px; }
 .home-page .home-hero::after { height: 72px; background-size: cover; }
 .home-page .home-hero-grid { display: block; }
 .home-page .home-hero h1 { font-size: 1.875rem; margin-bottom: 18px; }
 .home-page .home-site-title { font-size: 1rem; margin-bottom: 8px; }
 .home-page .home-definition { font-size: 1rem; }
 .home-page .home-free { font-size: .8125rem; }
 .home-page .home-actions { display: grid; gap: 10px; }
 .home-page .home-shortcuts { gap: 8px 20px; margin-top: 8px; }
 .home-page .home-hero-guide { display: grid; grid-template-columns: 110px minmax(0,1fr); gap: 14px; --yasuko-portrait-width: 110px; padding: 0; margin-top: 24px; }
 .home-page .home-hero-guide::before { width: 170px; left: 0; top: 0; transform: none; }
 .home-page .home-hero-guide .yasuko-guide__portrait { align-self: center; }
 .home-page .home-hero-guide .yasuko-guide__body { padding: 12px 0; background: transparent; }
 .home-page .home-hero-guide .yasuko-guide__message { font-size: .9375rem; line-height: 1.8; }
 .home-page .home-today-note { margin-top: 24px; }
 .home-page .home-dictionary { padding-block: 44px; }
 .home-page .home-dictionary-grid { display: block; }
 .home-page .home-dictionary-links { display: grid; gap: 10px; }
 .home-page .home-sequence-links { display: grid; gap: 2px; }
 .home-page .home-hexagram-example { max-width: 240px; margin: 30px auto 0; }
 .home-page .home-plaque { min-height: 250px; }
 .home-page .home-learning-entry { grid-template-columns: minmax(0,1fr); gap: 12px; padding-block: 24px; }
 .home-page .home-trigram-guide { --yasuko-portrait-width: 48px; }
 .home-page .yasuko-guide[data-display="inline-tip"] { padding: 16px 12px; gap: 14px; }
 .home-page .home-trigram-index { column-gap: 16px; margin-bottom: 28px; }
 .home-page .home-trigram-index a { gap: 10px; }
 .home-page .home-trigram-label > span { font-size: .75rem; }
 .home-page .home-index-arrow { display: none; }
 .home-page .home-books { padding-top: 28px; margin-top: 28px; }
 .home-page .home-editorial-grid,
 .home-page .home-about-grid { grid-template-columns: minmax(0,1fr); gap: 24px; }
 .home-page .home-reading { padding-block: 40px; }
 .home-page .home-character-definition { padding: 24px 0 0; border-left: 0; border-top: 1px solid var(--color-border); }
 .home-page .home-next { padding-block: 44px; }
 .home-page .home-closing-guide { --yasuko-portrait-width: 96px; gap: 18px; }
 .home-page .home-closing-action .home-button { width: 100%; }
}
@media (max-width: 22em) {
 .home-page .home-wrap { width: calc(100% - 32px); }
 .home-page .home-hero h1 { font-size: 1.75rem; }
 .home-page .home-hero-guide { grid-template-columns: 110px minmax(0,1fr); }
 .home-page .home-hero-guide .yasuko-guide__body { grid-column: 1 / -1; }
 .home-page .home-hero-guide::before { left: auto; right: 0; }
 .home-page .home-trigram-index { grid-template-columns: minmax(0,1fr); }
 .home-page .home-trigram-index a { min-height: 76px; gap: 18px; }
 .home-page .home-trigram-label { display: flex; align-items: baseline; gap: 8px; }
 .home-page .home-index-arrow { display: block; }
 .home-page .yasuko-guide[data-display="inline-tip"] { grid-template-columns: 48px minmax(0,1fr); }
 .home-page .yasuko-guide[data-display="inline-tip"] .yasuko-guide__body { display: contents; }
 .home-page .yasuko-guide[data-display="inline-tip"] .yasuko-guide__name { grid-column: 2; grid-row: 1; align-self: center; margin: 0; }
 .home-page .yasuko-guide[data-display="inline-tip"] .yasuko-guide__message { grid-column: 1 / -1; }
 .home-page .home-closing-guide { grid-template-columns: 96px minmax(0,1fr); }
 .home-page .home-closing-guide .yasuko-guide__body { grid-column: 1 / -1; }
}
@media (prefers-reduced-motion: reduce) {
 .home-page *, .home-page *::before, .home-page *::after { scroll-behavior: auto; transition: none; animation: none; }
}