:root{color-scheme:light dark;--color-ink: #20332c;--color-muted: #65736d;--color-primary: #2e6655;--color-primary-strong: #214d40;--color-primary-soft: #e5efe9;--color-paper: #f5f3ed;--color-surface: #fffefa;--color-surface-alt: #eceae3;--color-border: #d8d8d0;--color-focus: #ad6d28;--radius-control: 10px;--radius-card: 16px;--shadow-card: 0 16px 42px rgba(32, 51, 44, .08);--content-width: 1180px}@media(prefers-color-scheme:dark){:root{--color-ink: #e8eee9;--color-muted: #afbbb5;--color-primary: #82bca5;--color-primary-strong: #a4d2bf;--color-primary-soft: #1e3b31;--color-paper: #121815;--color-surface: #19211e;--color-surface-alt: #222c28;--color-border: #34423c;--color-focus: #e7a65f;--shadow-card: 0 16px 42px rgba(0, 0, 0, .25)}}*{box-sizing:border-box}html{min-width:320px;scroll-behavior:smooth}body{margin:0;min-width:320px;min-height:100dvh;background:var(--color-paper);color:var(--color-ink);font-family:PingFang SC,Hiragino Sans GB,Microsoft 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70px));padding-block:clamp(64px,10vw,118px);display:grid;grid-template-columns:minmax(0,1.4fr) minmax(300px,.75fr);align-items:center;gap:clamp(48px,8vw,110px)}.section-label{margin:0 0 14px;color:var(--color-primary);font-size:.85rem;font-weight:750;letter-spacing:.08em}.home-hero h1{max-width:14ch;margin:0;font-size:clamp(2.65rem,6vw,5.35rem);line-height:1.08;letter-spacing:-.05em}.home-hero__intro{max-width:38rem;margin:26px 0 0;color:var(--color-muted);font-size:clamp(1rem,1.5vw,1.15rem)}.hero-actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:12px}.button{min-height:46px;padding:10px 18px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--radius-control);cursor:pointer;font-weight:700;text-decoration:none;white-space:nowrap;transition:transform .16s ease,background-color .16s ease,border-color .16s ease}.button--primary{background:var(--color-primary-strong);color:#f7fbf8}.button--primary:hover{background:var(--color-primary)}.button--secondary{border-color:var(--color-border);background:var(--color-surface);color:var(--color-ink)}.button--secondary:hover{border-color:var(--color-primary);color:var(--color-primary-strong)}.home-summary{padding:clamp(24px,4vw,40px);border:1px solid var(--color-border);border-radius:var(--radius-card);background:var(--color-surface);box-shadow:var(--shadow-card)}.home-summary strong,.home-summary span{display:block}.home-summary__primary strong{font-size:clamp(4rem,9vw,7rem);line-height:.95;letter-spacing:-.06em}.home-summary__primary span,.home-summary__secondary span{color:var(--color-muted)}.home-summary__secondary{margin-top:34px;padding-top:24px;display:grid;grid-template-columns:1fr 1fr;gap:20px;border-top:1px solid var(--color-border)}.home-summary__secondary strong{font-size:1.75rem}.home-entrances{padding-block:40px 104px}.section-heading h2{margin:0;font-size:clamp(1.8rem,3vw,2.65rem);letter-spacing:-.03em}.section-heading p{margin:8px 0 0;color:var(--color-muted)}.entrance-grid{margin-top:28px;display:grid;grid-template-columns:1.25fr .75fr;gap:18px}.entrance-card{min-height:150px;padding:26px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px;border:1px solid var(--color-border);border-radius:var(--radius-card);background:var(--color-surface);color:var(--color-ink);text-decoration:none;transition:transform .16s ease,border-color .16s ease}.entrance-card:hover{transform:translateY(-2px);border-color:var(--color-primary)}.entrance-card--primary{background:var(--color-primary-soft)}.entrance-card__icon{color:var(--color-primary);font-size:34px}.entrance-card strong,.entrance-card small{display:block}.entrance-card strong{font-size:1.2rem}.entrance-card small{margin-top:4px;color:var(--color-muted);font-size:.92rem}.site-footer{margin-top:auto;border-top:1px solid 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0;display:-webkit-box;overflow:hidden;color:var(--color-muted);font-size:.92rem;-webkit-box-orient:vertical;-webkit-line-clamp:2}.empty-state{min-height:320px;padding:44px 24px;display:grid;align-content:center;justify-items:center;border:1px dashed var(--color-border);border-radius:var(--radius-card);text-align:center}.empty-state>svg{color:var(--color-primary);font-size:42px}.empty-state h2{margin:16px 0 0}.empty-state p{margin:6px 0 18px;color:var(--color-muted)}.breadcrumb{margin-bottom:30px}.breadcrumb a{display:inline-flex;align-items:center;gap:7px;color:var(--color-muted);font-weight:700;text-decoration:none}.breadcrumb a:hover{color:var(--color-primary-strong)}.text-detail{max-width:1020px}.text-detail__header{padding:clamp(28px,5vw,56px);border-radius:var(--radius-card);background:var(--color-primary-strong);color:#f7fbf8}.text-detail__header 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0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.detail-info-card{min-width:0;padding:22px;border:1px solid var(--color-border);border-radius:var(--radius-card);background:var(--color-surface)}.detail-info-card dt{color:var(--color-muted);font-size:.82rem}.detail-info-card dd{margin:7px 0 0;font-size:1.15rem;font-weight:750;overflow-wrap:anywhere}.knowledge-card{margin-top:16px;padding:clamp(28px,5vw,48px);border-radius:var(--radius-card);background:var(--color-primary-soft)}.knowledge-card h2,.preparation-section h2,.related-section h2{margin:0;font-size:clamp(1.55rem,3vw,2.2rem);letter-spacing:-.025em}.knowledge-card p{max-width:76ch;margin:18px 0 0;font-size:clamp(1.03rem,2vw,1.2rem);line-height:1.9}.preparation-section,.related-section{margin-top:64px}.content-section-grid{margin-top:22px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.content-section-card{min-height:172px;padding:24px;border:1px solid var(--color-border);border-radius:var(--radius-card);background:var(--color-surface)}.content-section-card h3{margin:0;font-size:1.12rem}.content-section-card>a{margin-top:18px;display:inline-flex;align-items:center;min-height:42px;padding:8px 12px;border:1px solid var(--color-primary);border-radius:var(--radius-control);background:var(--color-primary-soft);color:var(--color-primary-strong);font-weight:750;text-decoration:none}.content-section-card>a:hover{background:var(--color-primary-strong);color:#f7fbf8}.available-copy{margin:22px 0 0;color:var(--color-primary-strong);font-size:.9rem;font-weight:750}.pending-copy{margin:22px 0 0;color:var(--color-muted)}.long-copy{margin-top:18px;white-space:pre-wrap}.material-reader .long-copy{margin:18px 0 0;padding:clamp(22px,5vw,44px);overflow-wrap:anywhere;border:1px solid var(--color-border);border-radius:var(--radius-card);background:var(--color-surface);color:var(--color-ink);font-family:inherit;font-size:clamp(1rem,2vw,1.08rem);line-height:1.9;white-space:pre-wrap}.annotated-reader{margin-top:18px;display:grid;grid-template-columns:minmax(190px,220px) minmax(0,860px);align-items:start;gap:18px}.reader-mark-toolbar{position:sticky;top:82px;z-index:4;max-height:calc(100dvh - 102px);padding:16px 18px;overflow-y:auto;border:1px solid var(--color-border);border-radius:var(--radius-card);background:color-mix(in srgb,var(--color-surface),transparent 4%);box-shadow:0 10px 28px #20332c14;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.reader-mark-toolbar__intro{display:flex;align-items:flex-start;flex-direction:column;gap:5px 12px}.reader-mark-toolbar__intro strong{color:var(--color-primary-strong);font-size:1rem}.reader-mark-toolbar__intro span{color:var(--color-muted);font-size:.88rem;overflow-wrap:anywhere}.reader-mark-toolbar__actions{margin-top:12px;display:flex;flex-direction:column;gap:8px}.reader-mark-button,.reader-clear-confirmation button{width:100%;min-height:44px;padding:8px 13px;border:1px solid var(--color-border);border-radius:var(--radius-control);background:var(--color-surface);color:var(--color-ink);cursor:pointer;font:inherit;font-size:.88rem;font-weight:700}.reader-mark-button:hover:not(:disabled),.reader-clear-confirmation button:hover{border-color:var(--color-primary)}.reader-mark-button:disabled{cursor:not-allowed;opacity:.48}.reader-mark-button--yellow{background:color-mix(in srgb,#f6d96b 48%,var(--color-surface))}.reader-mark-button--green{background:color-mix(in srgb,#97d6ae 44%,var(--color-surface))}.reader-mark-button--pink{background:color-mix(in srgb,#edb5bd 42%,var(--color-surface))}.reader-mark-button--underline{text-decoration:underline 2px #c4534b;text-underline-offset:4px}.reader-mark-button--clear{margin-inline-start:0}.reader-mark-toolbar__status{min-height:1.5em;margin:9px 0 0;color:var(--color-primary-strong);font-size:.86rem;font-weight:700}.reader-clear-confirmation{margin-top:12px;padding:12px 14px;border-inline-start:4px solid var(--color-focus);border-radius:0 var(--radius-control) var(--radius-control) 0;background:color-mix(in srgb,var(--color-focus),transparent 88%)}.reader-clear-confirmation p{margin:0;font-weight:700}.reader-clear-confirmation>div{margin-top:9px;display:flex;flex-wrap:wrap;gap:8px}.reader-content{min-width:0;margin-top:0;padding:clamp(24px,5vw,46px);overflow-wrap:anywhere;border:1px solid var(--color-border);border-radius:var(--radius-card);background:var(--color-surface);color:var(--color-ink);font-size:clamp(1rem,2vw,1.08rem);line-height:1.95}.reader-paragraph{margin:0;white-space:pre-wrap}.reader-paragraph+.reader-paragraph{margin-top:1.15em}.reader-stage-heading{margin:30px 0 16px;padding:10px 15px;border-radius:var(--radius-control);color:var(--color-ink);font-size:1.05rem;font-weight:800;line-height:1.55;letter-spacing:.01em}.reader-content>.reader-stage-heading:first-child,.reader-content>.reader-paragraph+.reader-stage-heading{margin-top:28px}.reader-stage-heading--intro{background:color-mix(in srgb,#b9ddc8 64%,var(--color-surface))}.reader-stage-heading--initial{background:color-mix(in srgb,#bdd8e8 60%,var(--color-surface))}.reader-stage-heading--close-reading{background:color-mix(in srgb,#ead0a7 58%,var(--color-surface))}.reader-stage-heading--extension{background:color-mix(in srgb,#d3c4e6 57%,var(--color-surface))}.reader-stage-heading--summary{background:color-mix(in srgb,#e8bec3 54%,var(--color-surface))}.reader-stage-heading--board{margin:0 0 24px;background:color-mix(in srgb,#a8cdb8 66%,var(--color-surface))}.reader-board{margin-top:34px;padding:clamp(24px,5vw,42px);border:1px solid var(--color-border);border-radius:var(--radius-card);background:var(--color-surface-alt)}.reader-board__title,.reader-board__author{display:block;text-align:center;font-weight:800}.reader-board__title{font-size:clamp(1.45rem,4vw,1.9rem);line-height:1.45}.reader-board__author{margin-top:12px;font-size:clamp(1.12rem,3vw,1.35rem)}.reader-board__points{width:max-content;max-width:100%;margin:28px auto 0;text-align:left}.reader-board__points p{margin:0;white-space:pre-wrap}.reader-board__points p+p{margin-top:15px}.reader-mark{border-radius:3px;box-decoration-break:clone;-webkit-box-decoration-break:clone}.reader-mark--yellow{background:color-mix(in srgb,#f7dc6f 72%,transparent)}.reader-mark--green{background:color-mix(in srgb,#9ad8af 64%,transparent)}.reader-mark--pink{background:color-mix(in srgb,#efb7c0 62%,transparent)}.reader-mark--underline{text-decoration-line:underline;text-decoration-color:#c4534b;text-decoration-thickness:2px;text-underline-offset:4px}.related-links{margin-top:20px;display:grid;gap:10px}.related-links a{padding:17px 18px;display:grid;grid-template-columns:1fr auto;align-items:center;gap:20px;border:1px solid var(--color-border);border-radius:var(--radius-control);background:var(--color-surface);text-decoration:none}.related-links a:hover{border-color:var(--color-primary);color:var(--color-primary-strong)}.question-grid{margin-top:30px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.question-empty-wrap{margin-top:30px}.question-card{min-width:0;padding:26px;border:1px solid var(--color-border);border-radius:var(--radius-card);background:var(--color-surface)}.question-card h2{margin:0;font-size:1.5rem;overflow-wrap:anywhere}.question-card>p{margin:13px 0 0;display:-webkit-box;overflow:hidden;color:var(--color-muted);-webkit-box-orient:vertical;-webkit-line-clamp:3}.question-card__actions{margin-top:24px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}.text-link,.textbook-link{display:inline-flex;align-items:center;gap:7px;color:var(--color-primary-strong);font-weight:750;text-decoration:none}.textbook-link{color:var(--color-muted);font-size:.9rem}.text-link:hover,.textbook-link:hover{text-decoration:underline;text-underline-offset:4px}.question-detail{max-width:920px}.question-detail__header{margin-bottom:24px;display:flex;align-items:flex-end;justify-content:space-between;gap:28px}.question-detail__header h1{margin:0;font-size:clamp(2.7rem,7vw,5.6rem);line-height:1.08;letter-spacing:-.05em;overflow-wrap:anywhere}.question-content-card{padding:clamp(26px,5vw,48px);border:1px solid 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