/* ===== Watanabe Group — Stylesheet ===== */ /* Fonts: Arial (Latin) + Noto Sans JP / Hiragino / Yu Gothic (Japanese) * Noto Sans JP is loaded via in each HTML . */ :root { /* Layout */ --max-width: 920px; /* Colors — white base + steel blue (matching textbook covers) */ --bg: #ffffff; --bg-soft: #f4f7fa; --bg-tint: #edf3f8; --bg-elevated: #ffffff; --text: #1a1a1a; --text-strong: #0a0a0a; --text-light: #3a3a3a; --muted: #6a727b; --muted-soft: #a3aab2; --accent: #3a7ca5; /* steel blue */ --accent-hover: #1f5d83; /* deep steel blue */ --accent-deep: #1a4a6c; --accent-soft: #dee8f0; --accent-tint: #f0f5f9; --accent-border: #b9cedb; --border: #d8dfe6; --border-soft: #e5eaef; --danger: #b00020; --danger-hover: #800018; --success: #1d7a1d; --shadow-sm: 0 1px 2px rgba(58, 124, 165, 0.06); --shadow-md: 0 4px 16px rgba(58, 124, 165, 0.08); --shadow-lg: 0 12px 32px rgba(58, 124, 165, 0.12); --radius: 4px; --radius-lg: 8px; --font-sans: Arial, "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "YuGothic", Meiryo, sans-serif; --font-mono: "SF Mono", Monaco, "Cascadia Mono", "Roboto Mono", Consolas, monospace; } * { box-sizing: border-box; } *::selection { background: var(--accent); color: #fff; } html { font-size: 16px; scroll-behavior: smooth; } body { margin: 0; font-family: var(--font-sans); color: var(--text); background: var(--bg); line-height: 1.78; font-feature-settings: "palt" 1; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; } /* ===== Links ===== */ a { color: var(--accent); text-decoration: none; background-image: linear-gradient(to right, var(--accent), var(--accent)); background-position: 0 100%; background-size: 0% 1px; background-repeat: no-repeat; transition: background-size 0.3s ease, color 0.2s ease; padding-bottom: 1px; } a:hover { background-size: 100% 1px; color: var(--accent-hover); } /* ===== Header (steel-blue band, white text — matches book covers) ===== */ header.site-header { background: var(--accent); border-bottom: 1px solid var(--accent-deep); padding: 1.1rem 1.5rem; position: sticky; top: 0; z-index: 50; box-shadow: 0 2px 12px rgba(26, 74, 108, 0.18); } header.site-header .inner { max-width: var(--max-width); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; } header.site-header .site-title { font-weight: 700; font-size: 1.05rem; letter-spacing: 0.04em; color: #ffffff; } header.site-header .site-title a { color: #ffffff; background: none; text-decoration: none; padding: 0; transition: opacity 0.2s ease; } header.site-header .site-title a:hover { color: #ffffff; opacity: 0.8; background: none; } header.site-header nav { display: flex; gap: 1.5rem; flex-wrap: wrap; } header.site-header nav a { margin: 0; font-size: 0.92rem; color: rgba(255, 255, 255, 0.82); font-weight: 500; background: none; padding: 0.2rem 0; border-bottom: 1px solid transparent; transition: color 0.2s ease, border-color 0.2s ease; } header.site-header nav a:hover { color: #ffffff; border-bottom-color: #ffffff; background: none; background-size: 0; } main { max-width: var(--max-width); margin: 0 auto; padding: 4rem 1.5rem 6rem; } /* ===== Page hero (decorative banner — index page) ===== */ .page-hero { position: relative; height: clamp(220px, 38vh, 420px); background: url("office.jpg") no-repeat center 45% / cover; overflow: hidden; } .page-hero::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient( 180deg, rgba(30, 58, 95, 0.18) 0%, rgba(255, 255, 255, 0.0) 30%, rgba(255, 255, 255, 0.5) 75%, rgba(255, 255, 255, 1) 100% ); } .page-hero + main { padding-top: 2.5rem; } /* ===== Headings ===== */ h1 { font-size: clamp(2rem, 4vw, 2.5rem); font-weight: 700; line-height: 1.25; letter-spacing: -0.005em; margin: 0 0 1.5rem; color: var(--text-strong); } h1::after { content: ""; display: block; width: 3rem; height: 3px; background: var(--accent); margin-top: 1.25rem; } h2 { font-size: 1.5rem; font-weight: 700; margin: 3.5rem 0 1.25rem; padding-bottom: 0.6rem; color: var(--text-strong); letter-spacing: 0.005em; border-bottom: 1px solid var(--border); position: relative; clear: right; } h2::after { content: ""; position: absolute; left: 0; bottom: -1px; width: 3rem; height: 2px; background: var(--accent); } h3 { font-size: 1.05rem; font-weight: 700; margin: 1.85rem 0 0.65rem; color: var(--text-strong); letter-spacing: 0.015em; } p, ul, ol { margin: 0.75rem 0 1.25rem; } ul, ol { padding-left: 1.5rem; } ul li::marker { color: var(--accent); } ul li, ol li { padding-left: 0.25rem; margin-bottom: 0.2rem; } li ul, li ol { margin: 0.4rem 0 0.6rem; } hr { border: none; height: 1px; background: linear-gradient(to right, transparent, var(--border), transparent); margin: 3rem auto; } .muted { color: var(--muted); font-size: 0.95rem; } code { font-family: var(--font-mono); background: var(--accent-tint); border: 1px solid var(--border-soft); border-radius: 3px; padding: 0.1em 0.4em; font-size: 0.92em; color: var(--accent-deep); } .book-cover { float: right; max-width: 200px; margin: 0 0 1rem 1.75rem; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-md); } .youtube-embed { position: relative; aspect-ratio: 16 / 9; width: 100%; max-width: 720px; margin: 1.25rem auto; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); border: 1px solid var(--border); background: #000; } .award-figure { margin: 2rem auto; text-align: center; } .award-figure img { max-width: 200px; width: 100%; height: auto; border-radius: var(--radius); box-shadow: var(--shadow-md); border: 1px solid var(--border); display: block; margin: 0 auto; } .award-figure figcaption { margin-top: 0.85rem; font-size: 0.92rem; color: var(--muted); text-align: center; line-height: 1.6; } .youtube-embed iframe { width: 100%; height: 100%; border: 0; display: block; } .profile-photo { float: right; width: 170px; aspect-ratio: 4 / 5; margin: 0.25rem 0 1rem 1.75rem; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-md); } .research-figure { float: right; width: 320px; margin: 0.4rem 0 1rem 1.75rem; text-align: center; } .research-figure img { width: 100%; height: auto; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm); display: block; } .research-figure figcaption { margin-top: 0.5rem; font-size: 0.85rem; color: var(--muted); line-height: 1.55; text-align: left; } @media (max-width: 720px) { .research-figure { float: none; width: 100%; max-width: 480px; margin: 1rem auto 1.5rem; } } .profile-photo img { width: 100%; height: 100%; object-fit: cover; object-position: center 30%; display: block; } /* ===== Buttons ===== */ .button { display: inline-flex; align-items: center; justify-content: center; padding: 0.7rem 1.5rem; background: var(--accent); color: #fff; border-radius: var(--radius); border: none; font-size: 0.95rem; font-weight: 600; cursor: pointer; text-decoration: none; transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease; letter-spacing: 0.02em; background-image: none; font-family: var(--font-sans); } .button:hover { background: var(--accent-hover); color: #fff; text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow-md); background-size: 0; background-image: none; } .button:disabled { background: var(--muted-soft); cursor: not-allowed; transform: none; box-shadow: none; } .button.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); } .button.secondary:hover { background: var(--accent); color: #fff; } /* ===== Career table ===== */ table.career { border-collapse: collapse; margin: 1.25rem 0 2rem; width: 100%; } table.career th, table.career td { vertical-align: top; padding: 0.95rem 0.5rem 0.95rem 0; border-bottom: 1px solid var(--border-soft); } table.career th { text-align: left; font-weight: 500; white-space: nowrap; width: 1%; padding-right: 2.25rem; font-feature-settings: "tnum" 1; font-variant-numeric: tabular-nums; color: var(--muted); font-size: 0.92rem; letter-spacing: 0.02em; } table.career td { color: var(--text); } table.career tr { transition: background 0.15s ease; } table.career tr:hover { background: var(--accent-tint); } table.career tr:last-child th, table.career tr:last-child td { border-bottom: none; } @media (max-width: 600px) { table.career, table.career tbody, table.career tr, table.career th, table.career td { display: block; width: 100%; } table.career tr { border-bottom: 1px solid var(--border-soft); padding: 0.6rem 0; } table.career tr:last-child { border-bottom: none; } table.career th { padding: 0; font-size: 0.78rem; color: var(--accent); font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; } table.career td { padding: 0.25rem 0 0; border-bottom: none; } } /* ===== Footer ===== */ footer.site-footer { border-top: 1px solid var(--border); background: var(--bg-soft); padding: 2.5rem 1rem; text-align: center; color: var(--muted); font-size: 0.85rem; letter-spacing: 0.06em; } /* ===== Bulletin board ===== */ .board { margin-top: 3rem; background: var(--bg-elevated); border: 1px solid var(--border); border-top: 3px solid var(--accent); border-radius: var(--radius-lg); padding: 2rem; box-shadow: var(--shadow-md); } .board h2 { margin-top: 0; border-bottom-color: var(--border-soft); } .board-form label { display: block; font-size: 0.78rem; font-weight: 700; margin: 1rem 0 0.4rem; color: var(--text-strong); letter-spacing: 0.08em; text-transform: uppercase; } .board-form input[type="text"], .board-form textarea { width: 100%; padding: 0.75rem 0.9rem; font-size: 1rem; font-family: inherit; border: 1px solid var(--border); border-radius: var(--radius); background: #fff; color: var(--text); transition: border-color 0.2s ease, box-shadow 0.2s ease; } .board-form textarea { min-height: 9rem; resize: vertical; line-height: 1.7; } .board-form input[type="text"]:focus, .board-form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(58, 124, 165, 0.15); } .board-form .hint { font-size: 0.85rem; color: var(--muted); margin-top: 0.4rem; } .board-form .form-actions { display: flex; align-items: center; gap: 1rem; margin-top: 1.5rem; flex-wrap: wrap; } .board-status { margin-top: 0.5rem; font-size: 0.9rem; } .board-status.error { color: var(--danger); } .board-status.ok { color: var(--success); } .posts { margin-top: 2rem; display: flex; flex-direction: column; gap: 1rem; } .post { background: #fff; border: 1px solid var(--border-soft); border-radius: var(--radius); padding: 1.1rem 1.25rem 1.1rem 1.5rem; transition: box-shadow 0.2s ease, border-color 0.2s ease; position: relative; overflow: hidden; } .post:hover { box-shadow: var(--shadow-sm); border-color: var(--accent-border); } .post::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--accent); } .post-header { display: flex; justify-content: space-between; align-items: baseline; font-size: 0.86rem; color: var(--muted); margin-bottom: 0.55rem; gap: 0.75rem; font-feature-settings: "tnum" 1; font-variant-numeric: tabular-nums; } .post-header .handle { font-weight: 700; color: var(--text-strong); font-size: 0.95rem; letter-spacing: 0.01em; } .post-body { white-space: pre-wrap; word-wrap: break-word; overflow-wrap: break-word; line-height: 1.75; color: var(--text); } .post-body .katex { font-size: 1.05em; } .post-body .katex-display { margin: 0.6em 0; } .post-empty { color: var(--muted); padding: 2.5rem 1rem; text-align: center; font-style: italic; background: var(--bg-soft); border-radius: var(--radius); } .honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; } /* ===== Admin ===== */ .admin-post .delete-btn { background: var(--danger); color: #fff; border: none; border-radius: var(--radius); padding: 0.4rem 0.85rem; font-size: 0.85rem; cursor: pointer; font-family: inherit; transition: background 0.15s ease; } .admin-post .delete-btn:hover { background: var(--danger-hover); } .admin-post.deleted { opacity: 0.4; } /* ===== Responsive ===== */ @media (max-width: 600px) { h1 { font-size: 1.75rem; } h2 { font-size: 1.25rem; margin-top: 2.5rem; } main { padding: 2rem 1rem 3rem; } .board { padding: 1.5rem 1.25rem; border-radius: var(--radius); } header.site-header { padding: 0.75rem 1rem; } header.site-header nav { gap: 1rem; } header.site-header nav a { font-size: 0.88rem; } .book-cover { float: none; display: block; margin: 0 auto 1rem; max-width: 220px; } .profile-photo { float: none; margin: 0 auto 1.5rem; width: 100%; max-width: 240px; } }