/* ============================================================ base.css — CSS変数・リセット・タイポ・ダークテーマ・共通ヘッダー ============================================================ */ :root { /* --- color (dark base) --- */ --bg: #0a0a0b; --bg-elev: #141416; --bg-elev-2: #1c1c1f; --line: #2a2a2e; --fg: #eDEDED; --fg-dim: #9a9a9f; --fg-faint: #5f5f66; --accent: #d94a3a; /* アー写のオレンジ/レッドの燃えるような差し色 */ --accent-2: #6b4ea0; /* --- type --- */ --font-jp: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Noto Sans JP", "Helvetica Neue", Arial, sans-serif; --font-en: "Helvetica Neue", "Inter", "Arial", sans-serif; --font-mono: "SFMono-Regular", "Menlo", "Consolas", monospace; /* --- layout --- */ --maxw: 1120px; --gutter: clamp(20px, 5vw, 64px); --header-h: 64px; } /* Google Fonts を使いたい場合は各HTMLのに を足し、--font-jp / --font-en の先頭に "Noto Sans JP" / "Inter" を差す。 */ *, *::before, *::after { box-sizing: border-box; } html { -webkit-text-size-adjust: 100%; } body { margin: 0; background: var(--bg); color: var(--fg); font-family: var(--font-jp); font-weight: 300; line-height: 1.75; letter-spacing: 0.02em; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; min-height: 100vh; } a { color: inherit; text-decoration: none; } img { max-width: 100%; height: auto; display: block; } ::selection { background: var(--accent); color: #fff; } .en { font-family: var(--font-en); } .mono { font-family: var(--font-mono); } /* ---------- layout helpers ---------- */ .wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter); } .page { padding-top: calc(var(--header-h) + clamp(40px, 8vw, 96px)); padding-bottom: clamp(80px, 14vw, 160px); } .section-label { font-family: var(--font-en); font-size: 12px; letter-spacing: 0.28em; text-transform: uppercase; color: var(--fg-faint); margin: 0 0 clamp(24px, 5vw, 48px); } /* ============================================================ 共通ヘッダー（nav.js が注入） ============================================================ */ .site-header { position: fixed; top: 0; left: 0; right: 0; height: var(--header-h); z-index: 100; display: flex; align-items: center; background: color-mix(in srgb, var(--bg) 78%, transparent); backdrop-filter: saturate(140%) blur(12px); border-bottom: 1px solid var(--line); } .site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; } .brand { font-family: var(--font-en); font-size: 14px; letter-spacing: 0.08em; font-weight: 400; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 62vw; } @media (max-width: 680px) { .brand { font-size: 12px; letter-spacing: 0.04em; max-width: 68vw; } } .brand:hover { color: var(--accent); } .nav { display: flex; align-items: center; gap: clamp(16px, 3vw, 34px); } .nav a { font-family: var(--font-en); font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--fg-dim); transition: color .2s ease; position: relative; padding: 6px 0; } .nav a:hover { color: var(--fg); } .nav a.is-active { color: var(--fg); } .nav a.is-active::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 100%; height: 1px; background: var(--accent); } .lang-toggle { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-en); font-size: 11px; letter-spacing: 0.14em; color: var(--fg-faint); cursor: pointer; user-select: none; background: none; border: 1px solid var(--line); border-radius: 999px; padding: 5px 11px; transition: border-color .2s, color .2s; } .lang-toggle:hover { color: var(--fg); border-color: var(--fg-faint); } .lang-toggle .on { color: var(--fg); } /* mobile nav */ .nav-toggle { display: none; } @media (max-width: 680px) { .nav { position: fixed; inset: var(--header-h) 0 auto 0; flex-direction: column; align-items: flex-start; gap: 0; background: var(--bg-elev); border-bottom: 1px solid var(--line); padding: 8px var(--gutter) 20px; transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; } .nav.open { opacity: 1; transform: none; pointer-events: auto; } .nav a { font-size: 14px; padding: 14px 0; width: 100%; } .nav-toggle { display: inline-flex; background: none; border: 0; color: var(--fg); font-size: 22px; cursor: pointer; padding: 4px 8px; line-height: 1; } .site-header .wrap { gap: 12px; } } /* ---------- footer ---------- */ .site-footer { border-top: 1px solid var(--line); padding: 40px 0; color: var(--fg-faint); font-family: var(--font-en); font-size: 11px; letter-spacing: 0.14em; } .site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; } /* 動画埋め込み（本文中のYouTube/Vimeo） */ .embed { position: relative; aspect-ratio: 16 / 9; margin: 1.6em 0; border: 1px solid var(--line); background: #000; } .embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; } /* utility */ [hidden] { display: none !important; } .visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }