/* =====================================================================
   USK Studio — 田中勇輔（usk.jp）
   テーマ：夜の設計図。濃紺の地に青い製図線、差し色はクインの毛色（琥珀）。
   機械設計 × 機械語 × AI。都市名は拠点ではないので並べない。
   ===================================================================== */

:root {
	--ink: #07111f;        /* いちばん暗い地の色 */
	--navy: #0c1f40;
	--blue: #2a5bd7;       /* 製図の青 */
	--blue-soft: #8fb2ff;
	--line: rgba(143, 178, 255, 0.14);
	--line-strong: rgba(143, 178, 255, 0.38);
	--paper: #f1ede4;      /* 図面用紙 */
	--paper-line: rgba(12, 31, 64, 0.1);
	--white: #f7f5f0;
	--mute: rgba(247, 245, 240, 0.62);
	--amber: #e09a45;      /* クインの毛色 */

	--serif: "Bodoni Moda", "Didot", "Times New Roman", serif;
	--mincho: "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", serif;
	--mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
	--script: "Allura", cursive;

	--gutter: clamp(16px, 4vw, 56px);
	--max: 1440px;
	--header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
	margin: 0;
	background: var(--ink);
	color: var(--white);
	font-family: var(--mincho);
	font-size: 16px;
	line-height: 1.8;
	-webkit-font-smoothing: antialiased;
	overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
picture { display: contents; }
a { color: inherit; }
::selection { background: var(--amber); color: var(--ink); }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

.skip-link {
	position: absolute; left: 12px; top: -60px; z-index: 100;
	padding: 8px 14px; background: var(--amber); color: var(--ink); text-decoration: none;
}
.skip-link:focus { top: 12px; }

/* ---------- 共通の部品 ---------- */

.eyebrow {
	display: flex; flex-wrap: wrap; gap: 0 18px; margin: 0 0 24px;
	font: 500 11px/1.6 var(--mono); letter-spacing: 0.22em; text-transform: uppercase; color: var(--blue-soft);
}
.eyebrow span:first-child { color: var(--amber); }

.section-label {
	margin: 0 0 18px;
	font: 500 12px/1 var(--mono); letter-spacing: 0.24em; text-transform: uppercase; color: var(--amber);
}
.section-label::before { content: ""; display: inline-block; width: 36px; height: 1px; margin-right: 14px; vertical-align: middle; background: currentColor; }

.section-title {
	margin: 0;
	font: 500 clamp(2.4rem, 6vw, 5.6rem)/0.98 var(--serif); letter-spacing: -0.02em;
}

.is-outline { color: transparent; -webkit-text-stroke: 1.5px var(--white); }

/* 設計図の方眼（太い線と細い線を重ねる） */
.hero-grid {
	position: absolute; inset: 0; pointer-events: none;
	background-image:
		linear-gradient(var(--line) 1px, transparent 1px),
		linear-gradient(90deg, var(--line) 1px, transparent 1px),
		linear-gradient(rgba(143, 178, 255, 0.05) 1px, transparent 1px),
		linear-gradient(90deg, rgba(143, 178, 255, 0.05) 1px, transparent 1px);
	background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
	mask-image: radial-gradient(ellipse at 60% 40%, #000 30%, transparent 85%);
}

/* スクロールで現れる動き */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity 0.9s ease, transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1); }
[data-reveal].is-visible { opacity: 1; transform: none; }
.no-js [data-reveal] { opacity: 1; transform: none; }

/* ---------- ヘッダー ---------- */

.site-header {
	position: fixed; inset: 0 0 auto; z-index: 50; height: var(--header-h);
	display: flex; align-items: center; justify-content: space-between; gap: 24px;
	padding: 0 var(--gutter);
	transition: background 0.4s, border-color 0.4s;
	border-bottom: 1px solid transparent;
}
.site-header.is-scrolled { background: rgba(7, 17, 31, 0.82); backdrop-filter: blur(12px); border-color: var(--line); }
.wordmark { display: flex; align-items: baseline; gap: 14px; text-decoration: none; }
.wordmark-mark { font: 800 22px/1 var(--serif); letter-spacing: 0.08em; }
.wordmark-sub { font: 500 10px/1 var(--mono); letter-spacing: 0.3em; color: var(--mute); }
.site-nav { display: flex; gap: clamp(16px, 2.6vw, 40px); }
.site-nav a {
	position: relative; text-decoration: none;
	font: 500 12px/1 var(--mono); letter-spacing: 0.2em; text-transform: uppercase;
}
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -8px; height: 1px; background: var(--amber); transition: right 0.35s; }
.site-nav a:hover::after { right: 0; }

/* ---------- ヒーロー ---------- */

.hero {
	position: relative; isolation: isolate; overflow: hidden;
	min-height: 100svh;
	display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); align-items: center; gap: clamp(24px, 4vw, 72px);
	padding: calc(var(--header-h) + 40px) var(--gutter) 120px;
	background:
		radial-gradient(ellipse 60% 70% at 78% 40%, rgba(42, 91, 215, 0.38), transparent 70%),
		radial-gradient(ellipse 50% 50% at 10% 90%, rgba(224, 154, 69, 0.12), transparent 70%),
		linear-gradient(160deg, var(--navy), var(--ink) 60%);
}
.hero-gear {
	position: absolute; z-index: -1; left: -12vw; bottom: -18vw; width: 52vw; max-width: 760px;
	fill: none; stroke: var(--line-strong); stroke-width: 0.6;
	animation: spin 90s linear infinite;
}
.hero-gear .gear-teeth { stroke-width: 10; stroke-dasharray: 6 6.25; stroke: rgba(143, 178, 255, 0.18); }
.hero-gear .gear-axis { stroke-dasharray: 2 4; }
@keyframes spin { to { transform: rotate(360deg); } }

.hero-copy { position: relative; z-index: 2; }
.hero-title {
	margin: 0;
	font: 600 clamp(3.6rem, 9.4vw, 10.5rem)/0.86 var(--serif); letter-spacing: -0.035em;
}
.hero-title-line { display: block; }
.hero-title .is-outline { -webkit-text-stroke-color: var(--amber); font-style: italic; font-weight: 500; padding-left: 0.5em; }

.hero-jp { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 22px; margin: 32px 0 0; }
.hero-degree { font: 500 13px/1 var(--mono); letter-spacing: 0.18em; color: var(--blue-soft); padding: 8px 12px; border: 1px solid var(--line-strong); }
.hero-name-jp { font: 800 clamp(2rem, 4vw, 3.4rem)/1 var(--mincho); letter-spacing: 0.12em; }

.hero-roles {
	list-style: none; margin: 40px 0 0; padding: 0; counter-reset: role;
	display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 0 24px;
	max-width: 620px;
}
.hero-roles li {
	counter-increment: role;
	display: flex; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line);
	font: 500 12px/1.4 var(--mono); letter-spacing: 0.16em; text-transform: uppercase;
}
.hero-roles li::before { content: "0" counter(role); color: var(--amber); }
.hero-roles li:last-child { color: var(--amber); }

.hero-figure { position: relative; z-index: 1; margin: 0; justify-self: end; width: min(100%, 560px); }
.hero-frame { position: relative; }
.hero-frame::before {      /* 後ろにずらした青い板 */
	content: ""; position: absolute; inset: 0; transform: translate(22px, 22px); z-index: -1;
	background: var(--blue);
	background-image: linear-gradient(rgba(255,255,255,0.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.12) 1px, transparent 1px);
	background-size: 22px 22px;
}
.hero-frame::after {       /* 四隅のトンボ */
	content: ""; position: absolute; inset: -14px; pointer-events: none;
	background:
		linear-gradient(var(--amber), var(--amber)) top left / 28px 1px no-repeat,
		linear-gradient(var(--amber), var(--amber)) top left / 1px 28px no-repeat,
		linear-gradient(var(--amber), var(--amber)) top right / 28px 1px no-repeat,
		linear-gradient(var(--amber), var(--amber)) top right / 1px 28px no-repeat,
		linear-gradient(var(--amber), var(--amber)) bottom left / 28px 1px no-repeat,
		linear-gradient(var(--amber), var(--amber)) bottom left / 1px 28px no-repeat,
		linear-gradient(var(--amber), var(--amber)) bottom right / 28px 1px no-repeat,
		linear-gradient(var(--amber), var(--amber)) bottom right / 1px 28px no-repeat;
}
.hero-img { width: 100%; box-shadow: 0 40px 80px rgba(0, 0, 0, 0.45); }
.dim { position: absolute; font: 400 10px/1 var(--mono); letter-spacing: 0.14em; color: var(--blue-soft); }
.dim-x { left: 0; right: 0; top: -34px; text-align: center; border-bottom: 1px solid var(--line-strong); padding-bottom: 6px; }
.dim-y { top: 0; bottom: 0; right: -46px; writing-mode: vertical-rl; text-align: center; border-left: 1px solid var(--line-strong); padding-left: 6px; }
.hero-figure figcaption {
	display: flex; gap: 14px; margin-top: 40px;
	font: 500 11px/1 var(--mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--mute);
}
.hero-figure figcaption span { color: var(--amber); }

.hero-coords {
	position: absolute; left: var(--gutter); right: var(--gutter); bottom: 32px;
	display: flex; flex-wrap: wrap; gap: 8px 40px; margin: 0; padding: 0; list-style: none;
	font: 400 11px/1.4 var(--mono); letter-spacing: 0.14em; color: var(--mute);
}
.hero-coords b { font-weight: 500; color: var(--white); margin-right: 10px; }

.scroll-cue { position: absolute; right: var(--gutter); bottom: 28px; width: 1px; height: 64px; background: var(--line-strong); overflow: hidden; }
.scroll-cue span { position: absolute; left: 0; top: -40%; width: 1px; height: 40%; background: var(--amber); animation: cue 2.2s ease-in-out infinite; }
@keyframes cue { to { top: 100%; } }

/* ---------- 流れる帯 ---------- */

.marquee { overflow: hidden; background: var(--amber); color: var(--ink); border-block: 1px solid var(--ink); }
.marquee-track { display: flex; width: max-content; animation: marquee 38s linear infinite; }
.marquee span, .marquee i {
	padding: 18px 28px; white-space: nowrap;
	font: 600 clamp(1.2rem, 2.4vw, 2rem)/1 var(--serif); font-style: italic; text-transform: uppercase; letter-spacing: 0.02em;
}
.marquee i { font-style: normal; font-size: 1rem; padding-inline: 0; align-self: center; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 02 Ideas（図面用紙の上） ---------- */

.manifesto {
	position: relative;
	padding: clamp(96px, 14vw, 200px) var(--gutter);
	background-color: var(--paper);
	background-image: linear-gradient(var(--paper-line) 1px, transparent 1px), linear-gradient(90deg, var(--paper-line) 1px, transparent 1px);
	background-size: 32px 32px;
	color: var(--ink);
}
.manifesto-title {
	max-width: var(--max); margin: 0 auto;
	font: 500 clamp(2.6rem, 8vw, 8.4rem)/0.95 var(--serif); letter-spacing: -0.03em;
}
.manifesto-title em { color: var(--blue); font-weight: 500; }
.manifesto .section-label { max-width: var(--max); margin-inline: auto; }
.pillars {
	list-style: none; max-width: var(--max); margin: clamp(56px, 8vw, 110px) auto 0; padding: 0;
	display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
	border-top: 2px solid var(--ink);
}
.pillars li { display: grid; gap: 10px; padding: 24px 20px 8px 0; border-right: 1px solid var(--paper-line); }
.pillars li + li { padding-left: 20px; }
.pillars li:last-child { border-right: 0; }
.pillar-no { font: 500 12px/1 var(--mono); color: var(--blue); letter-spacing: 0.2em; }
.pillar-en { font: 600 clamp(1.4rem, 2.4vw, 2.2rem)/1.05 var(--serif); }
.pillar-jp { font: 500 13px/1 var(--mincho); color: rgba(7, 17, 31, 0.6); letter-spacing: 0.14em; }

/* ---------- 03 Design ---------- */

.disciplines { position: relative; padding: clamp(96px, 12vw, 180px) var(--gutter); }
.section-head { max-width: var(--max); margin: 0 auto clamp(48px, 6vw, 80px); }
.cards { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.card { position: relative; padding: clamp(28px, 3vw, 44px); background: var(--ink); transition: background 0.4s; }
.card:hover { background: #0b1830; }
.card-draw { width: 100%; aspect-ratio: 5 / 4; height: auto; margin-bottom: 28px; fill: none; stroke: var(--blue-soft); stroke-width: 1; }
.card-draw .teeth { stroke-width: 8; stroke-dasharray: 4.5 4.5; stroke: rgba(143, 178, 255, 0.55); }
.card-draw .teeth.small { stroke-width: 6; stroke-dasharray: 3.4 3.4; }
.card-draw .axis { stroke: var(--amber); stroke-dasharray: 3 4; stroke-width: 0.8; }
.card-draw .fill { fill: var(--amber); stroke: none; }
.card-draw text { fill: var(--amber); stroke: none; font: 10px var(--mono); letter-spacing: 0.1em; }
.card:hover .card-draw .teeth { animation: spin 14s linear infinite; transform-box: fill-box; transform-origin: center; }
.card-no { margin: 0 0 12px; font: 500 11px/1 var(--mono); letter-spacing: 0.22em; color: var(--amber); }
.card h3 { margin: 0; font: 600 clamp(1.8rem, 2.8vw, 2.6rem)/1 var(--serif); letter-spacing: -0.01em; }
.card-jp { margin: 14px 0 0; font: 500 13px/1 var(--mincho); letter-spacing: 0.16em; color: var(--mute); }

/* ---------- 04 Code（機械語とAI） ---------- */

.code {
	position: relative; isolation: isolate; overflow: hidden;
	display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); align-items: center; gap: clamp(40px, 6vw, 96px);
	padding: clamp(96px, 12vw, 180px) var(--gutter);
	background:
		radial-gradient(ellipse 50% 60% at 80% 50%, rgba(42, 91, 215, 0.3), transparent 70%),
		linear-gradient(180deg, var(--ink), var(--navy));
}
.code-bits {      /* 背景に流れる2進数（IDEA） */
	position: absolute; inset: -10% -5%; z-index: -1; pointer-events: none;
	font: 400 13px/2.2 var(--mono); letter-spacing: 0.4em; color: rgba(143, 178, 255, 0.07);
	word-break: break-all; transform: rotate(-6deg);
	mask-image: linear-gradient(90deg, #000, transparent 70%);
}
.code-copy { max-width: 620px; }
.code .section-title em { font-style: italic; color: var(--amber); }
.code-jp { margin: 28px 0 0; font: 500 clamp(1rem, 1.6vw, 1.2rem)/1.8 var(--mincho); letter-spacing: 0.12em; color: var(--mute); }
.stack { list-style: none; margin: clamp(40px, 5vw, 64px) 0 0; padding: 0; border-top: 1px solid var(--line-strong); }
.stack li {
	display: grid; grid-template-columns: 48px minmax(0, 1fr) auto; align-items: baseline; gap: 16px;
	padding: 18px 0; border-bottom: 1px solid var(--line);
}
.stack-no { font: 500 11px/1 var(--mono); letter-spacing: 0.2em; color: var(--amber); }
.stack-en { font: 600 clamp(1.3rem, 2.2vw, 1.9rem)/1.1 var(--serif); }
.stack-jp { font: 500 13px/1 var(--mincho); letter-spacing: 0.16em; color: var(--mute); }

.term {
	position: relative; margin: 0; min-width: 0;
	background: rgba(4, 10, 20, 0.88); border: 1px solid var(--line-strong);
	box-shadow: 18px 18px 0 rgba(42, 91, 215, 0.55), 0 40px 80px rgba(0, 0, 0, 0.4);
}
.term-bar { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.term-bar i { width: 10px; height: 10px; border-radius: 50%; border: 1px solid var(--line-strong); }
.term-bar i:first-child { background: var(--amber); border-color: var(--amber); }
.term-bar span { margin-left: 8px; font: 400 11px/1 var(--mono); letter-spacing: 0.14em; color: var(--mute); }
.term-body {
	margin: 0; padding: clamp(18px, 3vw, 32px); overflow-x: auto; white-space: normal;
	font: 400 clamp(11px, 1.1vw, 14px)/1.9 var(--mono); color: var(--white);
}
.term-body b { color: var(--amber); font-weight: 500; }
.term-body u { text-decoration: none; color: var(--blue-soft); }
.term-body em { font-style: normal; color: var(--amber); }
.tl { display: block; white-space: pre; }
.caret { display: inline-block; width: 0.6em; height: 1.1em; margin-left: 4px; vertical-align: -0.2em; background: var(--amber); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
/* 1行ずつ打ち込まれていく */
.term .tl { clip-path: inset(0 100% 0 0); }
.term.is-visible .tl { animation: typeline 0.5s steps(24) forwards; animation-delay: calc(0.4s + var(--i) * 0.22s); }
.no-js .term .tl { clip-path: none; }
@keyframes typeline { to { clip-path: inset(0 0 0 0); } }

/* AI開発カードのネットワーク図 */
.card-net .edge { stroke: rgba(143, 178, 255, 0.35); stroke-width: 0.8; }
.card-net circle { fill: var(--ink); }
.card-net .node { stroke: var(--amber); }
.card:hover .card-net .edge { stroke-dasharray: 4 4; animation: dash 1.6s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -16; } }

/* ---------- 05 Qin ---------- */

.qin {
	position: relative; overflow: hidden;
	display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); align-items: center; gap: clamp(32px, 6vw, 96px);
	padding: clamp(96px, 12vw, 180px) var(--gutter);
	background: radial-gradient(ellipse 60% 70% at 25% 50%, rgba(224, 154, 69, 0.22), transparent 70%), var(--navy);
}
.qin-photo { position: relative; justify-self: center; width: min(100%, 460px); }
.qin-photo::before { content: ""; position: absolute; inset: -18px; border: 1px solid var(--amber); border-radius: 50% 50% 0 0 / 38% 38% 0 0; }
.qin-photo img { width: 100%; border-radius: 50% 50% 0 0 / 38% 38% 0 0; filter: saturate(1.05); }
.qin-title { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0 28px; margin: 0; font-weight: 400; }
.qin-script { font: 400 clamp(6rem, 16vw, 15rem)/0.9 var(--script); color: var(--amber); }
.qin-kana { font: 800 clamp(1.4rem, 2.4vw, 2rem)/1 var(--mincho); letter-spacing: 0.3em; }
.spec { margin: 40px 0 0; max-width: 520px; border-top: 1px solid var(--line-strong); }
.spec div { display: grid; grid-template-columns: 120px 1fr; padding: 14px 0; border-bottom: 1px solid var(--line); }
.spec dt { font: 500 11px/1.6 var(--mono); letter-spacing: 0.22em; text-transform: uppercase; color: var(--blue-soft); }
.spec dd { margin: 0; font: 500 1.1rem/1.4 var(--serif); letter-spacing: 0.04em; }

/* ---------- フッター ---------- */

.site-footer { position: relative; padding: clamp(64px, 8vw, 120px) var(--gutter) 28px; background: var(--ink); border-top: 1px solid var(--line); overflow: hidden; }
.footer-mark { margin: 0; font: 800 clamp(4rem, 19vw, 18rem)/0.8 var(--serif); letter-spacing: -0.04em; color: transparent; -webkit-text-stroke: 1px var(--line-strong); white-space: nowrap; }
.footer-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 32px; margin-top: 40px; font: 400 11px/1.6 var(--mono); letter-spacing: 0.2em; color: var(--mute); }
.footer-row p { margin: 0; }
.copy-mark { display: inline-grid; place-items: center; width: 22px; height: 22px; text-decoration: none; border-radius: 50%; transition: color 0.3s, background 0.3s; }
.copy-mark:hover { color: var(--ink); background: var(--amber); }

/* ---------- ログイン画面 ---------- */

.gate {
	position: relative; isolation: isolate; overflow: hidden;
	min-height: 100svh; display: grid; place-items: center;
	padding: calc(var(--header-h) + 32px) var(--gutter) 64px;
	background: radial-gradient(ellipse 60% 60% at 70% 30%, rgba(42, 91, 215, 0.32), transparent 70%), linear-gradient(160deg, var(--navy), var(--ink) 65%);
}
.gate-card {
	position: relative; z-index: 2; width: min(100%, 480px);
	padding: clamp(28px, 5vw, 48px);
	background: rgba(7, 17, 31, 0.78); backdrop-filter: blur(10px);
	border: 1px solid var(--line-strong);
	box-shadow: 18px 18px 0 rgba(42, 91, 215, 0.55);
}
.gate-title { display: flex; align-items: baseline; gap: 18px; margin: 0; font: 600 clamp(2.6rem, 7vw, 4rem)/1 var(--serif); letter-spacing: -0.02em; }
.gate-title span { font: 800 1rem/1 var(--mincho); letter-spacing: 0.3em; color: var(--amber); }
.gate-lead { margin: 18px 0 28px; font-size: 14px; color: var(--mute); }
.gate-error { margin: 0 0 20px; padding: 12px 14px; font-size: 14px; border-left: 3px solid #ff7a6b; background: rgba(255, 122, 107, 0.1); }
.gate-form { display: grid; gap: 18px; }
.field { display: grid; gap: 8px; }
.field span { font: 500 11px/1.4 var(--mono); letter-spacing: 0.14em; color: var(--blue-soft); }
.field input {
	width: 100%; padding: 14px 16px; font: 16px/1.4 var(--mono); color: var(--white);
	background: rgba(143, 178, 255, 0.06); border: 1px solid var(--line-strong); border-radius: 0;
	transition: border-color 0.3s, background 0.3s;
}
.field input:focus { outline: none; border-color: var(--amber); background: rgba(224, 154, 69, 0.06); }
.check { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--mute); cursor: pointer; }
.check input { width: 18px; height: 18px; accent-color: var(--amber); }
.btn {
	display: flex; justify-content: space-between; align-items: center; width: 100%; margin-top: 6px; padding: 16px 20px;
	font: 600 15px/1 var(--mincho); letter-spacing: 0.2em; color: var(--ink);
	background: var(--amber); border: 0; cursor: pointer; transition: transform 0.2s, background 0.3s;
}
.btn:hover { background: #f0ae5c; }
.btn:active { transform: translateY(1px); }
.gate-links { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 20px; margin: 24px 0 0; font-size: 13px; }
.gate-links a { color: var(--mute); text-underline-offset: 4px; }
.gate-links a:hover { color: var(--amber); }
.gate-qin { position: absolute; z-index: 1; right: -4vw; bottom: 0; width: min(38vw, 520px); opacity: 0.28; mask-image: linear-gradient(to top, transparent, #000 40%); filter: grayscale(0.3); }
.gate-qin img { width: 100%; }

/* ---------- 経歴ページ ---------- */

.dossier { position: relative; isolation: isolate; overflow: hidden; padding: calc(var(--header-h) + 48px) var(--gutter) clamp(80px, 10vw, 140px); background: linear-gradient(170deg, var(--navy), var(--ink) 40%); }
.dossier-head {
	position: relative; max-width: var(--max); margin: 0 auto clamp(64px, 8vw, 110px);
	display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 340px); gap: 0 clamp(32px, 6vw, 96px);
}
.dossier-head > * { grid-column: 1; }
.dossier-meta { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 40px; padding-bottom: 16px; border-bottom: 1px dashed var(--line-strong); }
.dossier-meta .eyebrow { margin: 0; }
.dossier-logout { font: 500 11px/1 var(--mono); letter-spacing: 0.2em; color: var(--mute); text-underline-offset: 4px; }
.dossier-logout:hover { color: var(--amber); }
.dossier-title { margin: 0; font: 600 clamp(3.4rem, 9vw, 8.6rem)/0.88 var(--serif); letter-spacing: -0.035em; }
.dossier-title .is-outline { -webkit-text-stroke-color: var(--amber); font-style: italic; font-weight: 500; }
.dossier-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 32px 0 0; padding: 0; list-style: none; }
.dossier-tags li { padding: 8px 12px; font: 500 11px/1 var(--mono); letter-spacing: 0.16em; text-transform: uppercase; border: 1px solid var(--line-strong); }
.dossier-portrait { grid-column: 2 !important; grid-row: 1 / span 6; align-self: end; position: relative; }
.dossier-portrait img { width: 100%; box-shadow: 16px 16px 0 var(--blue); }

.dossier-body { position: relative; max-width: var(--max); margin: 0 auto; display: grid; gap: clamp(48px, 6vw, 80px); }
.timeline-block { display: grid; grid-template-columns: minmax(0, 340px) minmax(0, 1fr); gap: 24px clamp(32px, 6vw, 96px); padding-top: 28px; border-top: 1px solid var(--line-strong); }
.timeline-block h2 { display: grid; gap: 8px; margin: 0; font: 600 clamp(1.8rem, 3.4vw, 3rem)/1 var(--serif); }
.tl-no { font: 500 11px/1 var(--mono); letter-spacing: 0.22em; color: var(--amber); }
.tl-jp { font: 500 13px/1 var(--mincho); letter-spacing: 0.2em; color: var(--mute); }
.timeline { list-style: none; margin: 0; padding: 0 0 0 28px; position: relative; display: grid; gap: 26px; }
.timeline::before { content: ""; position: absolute; left: 4px; top: 8px; bottom: 8px; width: 1px; background: var(--line-strong); }
.timeline li { position: relative; display: grid; grid-template-columns: 120px 1fr; align-items: center; gap: 20px; }
.timeline li::before { content: ""; position: absolute; left: -28px; top: 50%; width: 9px; height: 9px; margin-top: -4.5px; border: 1px solid var(--amber); border-radius: 50%; background: var(--ink); }
.tl-year { font: 400 12px/1 var(--mono); letter-spacing: 0.12em; color: var(--blue-soft); }
.tl-bar { height: 12px; background: linear-gradient(90deg, rgba(143,178,255,0.14), rgba(143,178,255,0.04)); background-size: 200% 100%; animation: shimmer 2.4s ease-in-out infinite; }
.tl-bar.is-short { width: 55%; }
.tl-bar.is-mid { width: 78%; }
@keyframes shimmer { 50% { background-position: 100% 0; } }
.pending-note { margin: 0; text-align: center; font: 500 12px/1.6 var(--mono); letter-spacing: 0.24em; color: var(--amber); }

/* 経歴の本文が入ったときの体裁 */
.entry { font-size: 16px; line-height: 2; }
.dossier-body.entry { display: block; max-width: 920px; }
.entry h2 { margin: 2.4em 0 0.8em; padding-top: 0.6em; border-top: 1px solid var(--line-strong); font: 600 clamp(1.6rem, 3vw, 2.4rem)/1.1 var(--serif); }
.entry h3 { margin: 1.8em 0 0.6em; font: 600 1.25rem/1.4 var(--serif); color: var(--amber); }
.entry ul, .entry ol { padding-left: 1.4em; }
.entry li::marker { color: var(--amber); }
.entry a { color: var(--amber); }
.entry table { width: 100%; border-collapse: collapse; }
.entry th, .entry td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.entry th { font: 500 12px/1.6 var(--mono); color: var(--blue-soft); white-space: nowrap; }

/* ---------- ふつうのページ ---------- */

.plain { max-width: 920px; margin: 0 auto; padding: calc(var(--header-h) + 80px) var(--gutter) 120px; }
.plain .entry { margin-top: 40px; }
.post-list { list-style: none; margin: 40px 0 0; padding: 0; border-top: 1px solid var(--line-strong); }
.post-list a { display: flex; gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--line); text-decoration: none; }
.post-list time { font: 400 12px/2 var(--mono); color: var(--blue-soft); }

/* ---------- 画面幅ごとの調整 ---------- */

@media (max-width: 1024px) {
	.cards { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
	:root { --header-h: 60px; }
	.site-nav { display: none; }
	.hero { grid-template-columns: minmax(0, 1fr); padding-bottom: 140px; }
	.hero-figure { justify-self: center; width: min(100% - 40px, 480px); margin-top: 32px; }
	.dim-y { display: none; }
	.hero-coords { flex-direction: column; gap: 4px; bottom: 28px; }
	.pillars { grid-template-columns: 1fr 1fr; }
	.pillars li { border-bottom: 1px solid var(--paper-line); padding: 20px 12px 20px 0; }
	.pillars li + li { padding-left: 0; }
	.pillars li:nth-child(even) { padding-left: 16px; border-right: 0; }
	.code { grid-template-columns: minmax(0, 1fr); }
	.term { margin-right: 14px; box-shadow: 12px 12px 0 rgba(42, 91, 215, 0.55); }
	.qin { grid-template-columns: minmax(0, 1fr); }
	.dossier-head { grid-template-columns: 1fr; }
	.dossier-portrait { grid-column: 1 !important; grid-row: auto; width: min(100%, 320px); margin-top: 40px; }
	.timeline-block { grid-template-columns: 1fr; }
	.gate-qin { width: 70vw; opacity: 0.16; }
}

@media (max-width: 560px) {
	.wordmark-sub { display: none; }
	.cards { grid-template-columns: 1fr; }
	.timeline li { grid-template-columns: 80px 1fr; gap: 12px; }
	.hero-title .is-outline { padding-left: 0.25em; }
	.spec div { grid-template-columns: 90px 1fr; }
	.stack li { grid-template-columns: 36px minmax(0, 1fr); }
	.stack-jp { grid-column: 2; }
}

@media (prefers-reduced-motion: reduce) {
	*, *::before, *::after { animation: none !important; transition: none !important; }
	html { scroll-behavior: auto; }
	[data-reveal] { opacity: 1; transform: none; }
	.term .tl { clip-path: none; }
}