.tree-hero{padding:55px 0 25px}.tree-hero h1{font-size:42px}.age-section{padding:25px 0 38px;margin-bottom:35px;border-bottom:1px solid var(--line)}.age-section h2{font-size:20px}.age-links{display:flex;flex-wrap:wrap;gap:12px}.age-links a{background:var(--pale);padding:9px 17px;border-radius:5px;font-size:14px}.source-note{background:var(--pale);font-size:13px;padding:18px 22px;margin-bottom:30px;color:var(--muted)}.source-note a{display:block;text-decoration:underline;margin-top:8px}.original h1{font-size:28px}.original h2{margin-top:32px}.original h3{margin-top:26px}.original h4{font-size:17px}.original hr{border:0;border-top:1px solid var(--line);margin:28px 0}.original .list-line{margin-top:8px;margin-bottom:8px}.original blockquote{font-size:16px;margin:10px 0}.table-scroll{overflow:auto}table{border-collapse:collapse;font-size:14px;width:100%}td,th{border:1px solid var(--line);padding:10px;min-width:110px}th{background:var(--pale)}pre{overflow:auto;background:#eff0eb;padding:16px;font-size:12px}.reading-aside nav{max-height:70vh;overflow:auto}.download-links{display:flex;flex-wrap:wrap;gap:15px;margin:25px 0}.download-links a{text-decoration:underline}.sources{margin-bottom:35px}@media(max-width:650px){.tree-hero{padding-top:30px}.tree-hero h1{font-size:30px}.original h1{font-size:25px}.age-links{gap:8px}.age-links a{padding:8px 12px}.age-section{padding-top:12px}.original p{font-size:16px}}@media print{.source-note{font-size:9pt}.original h1{font-size:20pt}.original p{font-size:10pt}pre{white-space:pre-wrap}.table-scroll{overflow:visible}}

.search-row{display:flex;gap:10px;align-items:stretch}.search-row input{flex:1;min-width:0}.search-submit{flex-shrink:0;background:var(--green);color:white;border-color:var(--green);padding:10px 24px;font-size:15px}.search-submit:hover{background:#1a4539}.search-wrap #search-hint{margin:8px 0 0}#result-count:focus{outline:2px solid var(--green);outline-offset:5px}@media(max-width:650px){.search-submit{padding:10px 18px}}

/* Warm paper + ink blue reading theme */
:root{--paper:#faf9f6;--white:#ffffff;--ink:#29364b;--muted:#687386;--green:#42649a;--line:#e0e4eb;--pale:#eef2f8;--orange:#ba794f}
.brand-mark{border-radius:8px;background:#293f62}.header{background:#fffefa}.header nav{gap:22px}.tree-hero{padding:46px 0 22px}.tree-hero h1{font-weight:650;letter-spacing:-.025em}.age-links a:hover{background:#e0e8f4}.event-card{border-radius:10px;border-color:#e2e5ec;box-shadow:0 2px 8px #24375004}.event-card:hover{border-color:#94a9ca;box-shadow:0 5px 18px #2437500a}.event-card .eyebrow{color:#6c7b93;letter-spacing:.04em}.event-card h3{color:#29364b}.tool-banner{background:#eeeae3}.source-note{border-radius:6px;background:#f1f3f7}.original blockquote{background:#f0f3f8;border-left:3px solid #9aadc9}.search-submit:hover,.primary:hover{background:#304c79}input[type=search]{border-color:#cdd5e1}pre{background:#f0f2f6}.practice-box{border:1px solid #d4deed;border-radius:8px;background:#f4f6fa;margin-top:35px;padding:20px}.practice-box summary{font-weight:600;color:#365784}.ai-prompt{display:block;box-sizing:border-box;width:100%;min-height:245px;padding:15px;border:1px solid #cdd5e1;border-radius:5px;font:14px/1.9 "Microsoft YaHei",sans-serif;color:#29364b;background:white;resize:vertical}.practice-box button{margin-top:14px;background:#42649a;color:white}.copy-status{display:block;font-size:12px;margin-top:8px}.prose a:not(.primary){text-decoration:underline;text-underline-offset:3px}@media(max-width:650px){.header nav{gap:14px;flex-wrap:wrap}.tree-hero{padding-top:28px}.practice-box{padding:16px}}@media print{.practice-box{display:none}}

.personal-logo{display:block;width:48px;height:48px;object-fit:contain;border-radius:8px;flex-shrink:0;background:#000}.brand-text{display:flex;flex-direction:column;gap:3px;line-height:1.5}.brand-text strong{font-size:17px;font-weight:650}.brand-text small{font-size:11px;font-weight:400;letter-spacing:.06em;color:var(--muted)}.personal-credit{font-weight:600;color:var(--ink)}@media(max-width:650px){.personal-logo{width:42px;height:42px}.brand-text strong{font-size:16px}.brand-text small{font-size:11px}}

/* Personal homepage entrance */
.header nav{align-items:center;flex-wrap:wrap}.header nav .personal-home{display:inline-flex;align-items:center;gap:12px;padding:9px 16px;background:#293f62;color:#fff;border:1px solid #293f62;border-radius:999px;font-size:13px;font-weight:600;box-shadow:0 3px 8px #293f6214;transition:background .15s,box-shadow .15s}.header nav .personal-home span{font-size:17px;line-height:1}.header nav .personal-home:hover{background:#42649a;border-color:#42649a;box-shadow:0 4px 12px #293f6226}.header nav .personal-home:focus-visible{outline:3px solid #ba794f;outline-offset:4px}@media(max-width:850px){.header-inner{flex-wrap:wrap;padding-top:16px;padding-bottom:16px;gap:14px}.header nav{gap:14px}}@media(max-width:650px){.header nav .personal-home{padding:7px 13px;font-size:12px;gap:8px}}@media(prefers-reduced-motion:reduce){.header nav .personal-home{transition:none}}