/* ==========================================================================
   Inkline — study-desk editorial design system
   Paper cream · ink navy · vermillion · highlighter yellow
   ========================================================================== */

:root {
	--paper: #faf5eb;
	--paper-deep: #f2ead9;
	--paper-card: #fffdf7;
	--ink: #211e18;
	--ink-soft: #5c564a;
	--ink-faint: #8a8273;
	--navy: #1f2c4d;
	--verm: #d8491f;
	--verm-deep: #b53a16;
	--marker: #ffd83d;
	--sage: #4e7a5a;
	--line: #e3d9c3;
	--line-strong: #cfc2a4;

	--font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
	--font-body: "Instrument Sans", "Avenir Next", "Segoe UI", sans-serif;
	--font-mono: "Spline Sans Mono", "SF Mono", Menlo, monospace;

	--wrap: 1180px;
	--radius: 14px;
	--radius-lg: 22px;
	--shadow-card: 0 1px 2px rgba(33, 30, 24, 0.06), 0 10px 28px -14px rgba(33, 30, 24, 0.22);
	--shadow-lift: 0 2px 4px rgba(33, 30, 24, 0.08), 0 22px 44px -16px rgba(33, 30, 24, 0.3);
	--ease-spring: cubic-bezier(0.34, 1.4, 0.44, 1);
	--ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
	margin: 0;
	font-family: var(--font-body);
	font-size: 1.0625rem;
	line-height: 1.65;
	color: var(--ink);
	background-color: var(--paper);
	background-image: radial-gradient(rgba(33, 30, 24, 0.055) 1px, transparent 1px);
	background-size: 26px 26px;
	overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--verm-deep); text-decoration: none; }
a:hover { color: var(--verm); }
button { font-family: inherit; cursor: pointer; }
input, button, textarea { font-size: 100%; }
:focus-visible { outline: 3px solid var(--verm); outline-offset: 3px; border-radius: 4px; }

.screen-reader-text {
	border: 0; clip: rect(1px, 1px, 1px, 1px); clip-path: inset(50%);
	height: 1px; width: 1px; margin: -1px; overflow: hidden;
	padding: 0; position: absolute !important; word-wrap: normal !important;
}
.skip-link { left: 50%; transform: translateX(-50%); z-index: 999; }
.skip-link:focus {
	clip: auto; clip-path: none; width: auto; height: auto;
	position: fixed; top: 12px; padding: 0.6em 1.2em;
	background: var(--navy); color: #fff; border-radius: 999px; font-weight: 600;
}

.ink-wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: clamp(18px, 4vw, 36px); }

h1, h2, h3 { font-family: var(--font-display); font-weight: 640; line-height: 1.12; letter-spacing: -0.015em; margin: 0 0 0.45em; color: var(--ink); }

/* ---------- Motion vocabulary ---------- */
@keyframes ink-load-in { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }
.ink-load { opacity: 0; animation: ink-load-in 0.75s var(--ease-out) forwards; animation-delay: calc(var(--d, 0) * 110ms); }

.ink-reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out); transition-delay: calc(var(--i, 0) * 60ms); }
.ink-reveal.is-in { opacity: 1; transform: none; }

/* Highlighter sweep */
.ink-marker {
	font-style: normal;
	background-image: linear-gradient(104deg, transparent 0.5%, var(--marker) 2.5%, var(--marker) 97%, transparent 99%);
	background-repeat: no-repeat;
	background-size: 0% 88%;
	background-position: 0 60%;
	padding: 0.05em 0.12em;
	margin: -0.05em -0.12em;
	box-decoration-break: clone;
	animation: ink-marker-sweep 0.9s var(--ease-out) 0.9s forwards;
}
@keyframes ink-marker-sweep { to { background-size: 100% 88%; } }

/* Underline draw on section titles */
.ink-underline { position: relative; display: inline; }
.ink-underline::after {
	content: ""; position: absolute; left: 0; bottom: -0.12em;
	width: 100%; height: 0.14em; background: var(--verm);
	border-radius: 2px; transform: scaleX(0); transform-origin: left;
	transition: transform 0.8s var(--ease-out) 0.15s;
}
.is-in .ink-underline::after, h1 .ink-underline::after { transform: scaleX(1); }

/* When GSAP drives the reveals, hand transforms over to it entirely. */
.has-gsap .ink-reveal { transition: none; }
.has-gsap .ink-reveal.is-in { opacity: 1; }

/* Word-split spans for the footer CTA title */
.ink-w { display: inline-block; overflow: hidden; vertical-align: bottom; }
.ink-w > span { display: inline-block; }

@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	.ink-load, .ink-reveal { opacity: 1 !important; transform: none !important; animation: none !important; transition: none !important; }
	.ink-marker { background-size: 100% 88%; animation: none; }
	.ink-underline::after { transform: scaleX(1); transition: none; }
	* { animation-duration: 0.001s !important; transition-duration: 0.001s !important; }
	/* Brand marquee stays alive (site-owner choice) — just slower and calmer. */
	.ink-ticker-track { animation: ink-ticker 56s linear infinite !important; animation-duration: 56s !important; }
}

/* ---------- Reading progress ---------- */
.ink-progress { position: fixed; top: 0; left: 0; right: 0; height: 4px; z-index: 120; pointer-events: none; }
.ink-progress span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--verm), var(--marker)); transition: width 80ms linear; }

/* ---------- Header ---------- */
.ink-header {
	position: sticky; top: 0; z-index: 100;
	background: rgba(250, 245, 235, 0.92);
	-webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
	border-bottom: 1px solid var(--line);
	transition: box-shadow 0.3s ease;
}
.ink-header.is-stuck { box-shadow: 0 8px 24px -18px rgba(33, 30, 24, 0.45); }
.ink-header-row { display: flex; align-items: center; gap: 18px; min-height: 66px; }

.ink-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); }
.ink-brand-mark { width: 32px; height: 32px; color: var(--verm); display: grid; place-items: center; transition: transform 0.45s var(--ease-spring); }
.ink-brand:hover .ink-brand-mark { transform: rotate(-8deg) scale(1.08); }
.ink-brand-text { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; letter-spacing: -0.02em; color: var(--ink); }
.ink-brand-text em { font-style: normal; color: var(--verm); }
.ink-brand-dot { font-size: 0.72em; color: var(--ink-faint); font-weight: 500; }

.ink-nav { margin-left: auto; }
.ink-nav ul { display: flex; gap: 2px; list-style: none; margin: 0; padding: 0; }
.ink-nav a {
	display: block; padding: 8px 13px; border-radius: 999px;
	font-size: 0.93rem; font-weight: 600; color: var(--ink-soft);
	position: relative; transition: color 0.2s, background-color 0.2s;
}
.ink-nav a:hover { color: var(--ink); background: rgba(33, 30, 24, 0.06); }
.ink-nav a.is-active { color: var(--verm-deep); }
.ink-nav a.is-active::after {
	content: ""; position: absolute; left: 14px; right: 14px; bottom: 3px;
	height: 2px; border-radius: 2px; background: var(--verm);
}

.ink-header-actions { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.ink-nav + .ink-header-actions { margin-left: 0; }
.ink-icon-btn {
	width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--line);
	background: var(--paper-card); color: var(--ink); display: grid; place-items: center;
	transition: transform 0.25s var(--ease-spring), border-color 0.2s, background-color 0.2s;
}
.ink-icon-btn:hover { transform: translateY(-2px); border-color: var(--line-strong); }
.ink-icon-btn svg { width: 19px; height: 19px; }

.ink-burger { flex-direction: column; gap: 4px; display: none; }
.ink-burger span { display: block; width: 17px; height: 2px; border-radius: 2px; background: var(--ink); transition: transform 0.3s var(--ease-out), opacity 0.2s; }

/* ---------- Search overlay ---------- */
/* Author `display` rules would otherwise override the UA [hidden] rule and
   leave invisible click-blocking layers over the page. Global guard: */
[hidden] { display: none !important; }

.ink-overlay {
	position: fixed; inset: 0; z-index: 200;
	background: rgba(33, 30, 24, 0.55);
	-webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
	display: grid; place-items: start center; padding: 14vh 18px 18px;
	opacity: 0; transition: opacity 0.3s ease;
}
.ink-overlay.is-open { opacity: 1; }
.ink-overlay-inner {
	position: relative; width: min(640px, 100%);
	background: var(--paper-card); border-radius: var(--radius-lg);
	padding: clamp(22px, 4vw, 36px); box-shadow: var(--shadow-lift);
	transform: translateY(18px) scale(0.98); transition: transform 0.35s var(--ease-spring);
}
.ink-overlay.is-open .ink-overlay-inner { transform: none; }
.ink-overlay-close {
	position: absolute; top: 14px; right: 14px; width: 38px; height: 38px;
	border: none; border-radius: 10px; background: var(--paper-deep);
	font-size: 1.5rem; line-height: 1; color: var(--ink); transition: transform 0.25s var(--ease-spring);
}
.ink-overlay-close:hover { transform: rotate(90deg); }
.ink-overlay-form { display: flex; gap: 10px; margin-top: 10px; }
.ink-overlay-form input {
	flex: 1; min-width: 0; padding: 13px 16px; font-size: 1.05rem;
	border: 2px solid var(--line-strong); border-radius: 12px; background: var(--paper);
	color: var(--ink); transition: border-color 0.2s;
}
.ink-overlay-form input:focus { border-color: var(--verm); outline: none; }
.ink-overlay-form button {
	padding: 0 22px; border: none; border-radius: 12px;
	background: var(--navy); color: #fff; font-weight: 700;
	transition: background-color 0.2s, transform 0.2s var(--ease-spring);
}
.ink-overlay-form button:hover { background: var(--verm-deep); transform: translateY(-1px); }
.ink-overlay-hints { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 16px; font-size: 0.88rem; color: var(--ink-faint); }
.ink-overlay-hints a {
	padding: 5px 12px; border-radius: 999px; border: 1px solid var(--line);
	color: var(--ink-soft); font-weight: 600; transition: all 0.2s;
}
.ink-overlay-hints a:hover { border-color: var(--verm); color: var(--verm-deep); }

/* ---------- Mobile drawer ---------- */
.ink-drawer { position: fixed; inset: 0; z-index: 200; }
.ink-drawer-scrim {
	position: absolute; inset: 0; border: none;
	background: rgba(33, 30, 24, 0.5); opacity: 0; transition: opacity 0.3s;
}
.ink-drawer.is-open .ink-drawer-scrim { opacity: 1; }
.ink-drawer-panel {
	position: absolute; top: 0; right: 0; bottom: 0; z-index: 1;
	width: min(340px, 88vw); background: var(--paper-card);
	border-left: 1px solid var(--line); box-shadow: var(--shadow-lift);
	padding: 20px 22px 28px; overflow-y: auto;
	transform: translateX(100%); transition: transform 0.42s var(--ease-out);
	display: flex; flex-direction: column; gap: 22px;
}
.ink-drawer.is-open .ink-drawer-panel { transform: none; }
.ink-drawer-head { display: flex; align-items: center; justify-content: space-between; }
.ink-drawer-links { list-style: none; margin: 0; padding: 0; }
.ink-drawer-links li { opacity: 0; transform: translateX(24px); transition: opacity 0.4s var(--ease-out), transform 0.4s var(--ease-out); transition-delay: calc(80ms + var(--i) * 50ms); }
.ink-drawer.is-open .ink-drawer-links li { opacity: 1; transform: none; }
.ink-drawer-links a {
	display: flex; align-items: baseline; gap: 14px;
	padding: 13px 6px; border-bottom: 1px dashed var(--line);
	font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; color: var(--ink);
}
.ink-drawer-links a.is-active, .ink-drawer-links a:hover { color: var(--verm-deep); }
.ink-drawer-num { font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-faint); }
.ink-drawer-classes div { display: flex; gap: 8px; flex-wrap: wrap; }
.ink-drawer-classes a {
	width: 48px; height: 48px; display: grid; place-items: center;
	border: 1.5px solid var(--line-strong); border-radius: 12px;
	font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; color: var(--ink);
	transition: all 0.2s var(--ease-spring);
}
.ink-drawer-classes a:hover { background: var(--navy); border-color: var(--navy); color: #fff; transform: translateY(-2px); }

body.ink-locked { overflow: hidden; }

/* ---------- Kickers, titles, links ---------- */
.ink-kicker {
	font-family: var(--font-mono); font-size: 0.74rem; font-weight: 600;
	letter-spacing: 0.18em; text-transform: uppercase; color: var(--verm-deep);
	margin: 0 0 8px;
}
.ink-title { font-size: clamp(1.7rem, 3.4vw, 2.4rem); margin: 0; }
.ink-link { display: inline-flex; align-items: center; gap: 7px; font-weight: 700; font-size: 0.95rem; color: var(--navy); white-space: nowrap; }
.ink-link:hover { color: var(--verm-deep); }
.ink-arr { width: 17px; height: 17px; flex: none; transition: transform 0.3s var(--ease-spring); }
a:hover > .ink-arr, a:hover .ink-res-go .ink-arr { transform: translateX(4px); }

.ink-btn {
	display: inline-flex; align-items: center; gap: 10px;
	padding: 13px 24px; border-radius: 999px; font-weight: 700; font-size: 1rem;
	transition: transform 0.25s var(--ease-spring), box-shadow 0.25s;
}
.ink-btn svg { width: 18px; height: 18px; }
.ink-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-lift); }
.ink-btn-light { background: var(--paper-card); color: var(--navy); }

.ink-chip {
	display: inline-block; padding: 6px 14px; border-radius: 999px;
	border: 1.5px solid var(--line-strong); background: var(--paper-card);
	font-size: 0.85rem; font-weight: 600; color: var(--ink-soft);
	transition: all 0.2s var(--ease-spring);
}
.ink-chip:hover { border-color: var(--verm); color: var(--verm-deep); transform: translateY(-2px); }

/* ---------- Hero ---------- */
.ink-hero { position: relative; padding: clamp(56px, 9vw, 110px) 0 clamp(40px, 6vw, 70px); overflow: hidden; }
.ink-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);
	background-size: 72px 72px; opacity: 0.5;
	-webkit-mask-image: radial-gradient(70% 65% at 50% 30%, black 30%, transparent 75%);
	mask-image: radial-gradient(70% 65% at 50% 30%, black 30%, transparent 75%);
}
.ink-hero-blob {
	position: absolute; width: 560px; height: 560px; right: -180px; top: -200px;
	background: radial-gradient(closest-side, rgba(216, 73, 31, 0.13), transparent);
	border-radius: 50%; pointer-events: none;
	animation: ink-drift 14s ease-in-out infinite alternate;
}
@keyframes ink-drift { to { transform: translate(-60px, 50px) scale(1.12); } }

.ink-hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.ink-hero-inner { max-width: 780px; margin-inline: auto; text-align: center; position: relative; z-index: 2; }
.ink-hero-pill {
	display: inline-flex; align-items: center; gap: 9px;
	padding: 7px 16px; border-radius: 999px;
	border: 1px solid var(--line-strong); background: var(--paper-card);
	font-family: var(--font-mono); font-size: 0.76rem; letter-spacing: 0.06em;
	color: var(--ink-soft); margin: 0 0 26px;
}
.ink-pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--sage); position: relative; }
.ink-pulse::after { content: ""; position: absolute; inset: -4px; border-radius: 50%; border: 2px solid var(--sage); opacity: 0; animation: ink-pulse 2.2s ease-out infinite; }
@keyframes ink-pulse { 0% { transform: scale(0.4); opacity: 0.9; } 70%, 100% { transform: scale(1.3); opacity: 0; } }

.ink-hero-title { font-size: clamp(2.5rem, 7vw, 4.6rem); font-weight: 700; margin: 0 0 20px; }
.ink-hero-title > span { display: block; }
.ink-hero-sub { font-size: clamp(1.02rem, 1.8vw, 1.2rem); color: var(--ink-soft); max-width: 600px; margin: 0 auto 30px; }

.ink-hero-search {
	display: flex; align-items: center; gap: 8px;
	max-width: 560px; margin: 0 auto 18px; padding: 8px 8px 8px 18px;
	background: var(--paper-card); border: 2px solid var(--ink);
	border-radius: 999px; box-shadow: 4px 4px 0 var(--ink);
	transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}
.ink-hero-search:focus-within { transform: translate(-2px, -2px); box-shadow: 7px 7px 0 var(--verm); }
.ink-hero-search svg { width: 20px; height: 20px; color: var(--ink-faint); flex: none; }
.ink-hero-search input { flex: 1; min-width: 0; border: none; background: none; font-size: 1.02rem; color: var(--ink); padding: 10px 4px; }
.ink-hero-search input:focus { outline: none; }
.ink-hero-search button {
	border: none; border-radius: 999px; padding: 11px 24px;
	background: var(--verm); color: #fff; font-weight: 700; font-size: 0.97rem;
	transition: background-color 0.2s;
}
.ink-hero-search button:hover { background: var(--verm-deep); }

.ink-hero-quick { display: flex; flex-wrap: wrap; justify-content: center; gap: 9px; margin-bottom: 44px; }
.ink-hero-quick a {
	padding: 7px 15px; border-radius: 999px; border: 1.5px dashed var(--line-strong);
	font-size: 0.88rem; font-weight: 600; color: var(--ink-soft);
	transition: all 0.22s var(--ease-spring);
}
.ink-hero-quick a:hover { border-style: solid; border-color: var(--navy); color: var(--navy); transform: translateY(-2px); background: var(--paper-card); }

.ink-hero-stats {
	display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px;
	max-width: 640px; margin: 0 auto; padding: 0;
}
.ink-stat {
	background: var(--paper-card); border: 1px solid var(--line);
	border-radius: var(--radius); padding: 14px 10px 12px;
	display: flex; flex-direction: column-reverse; gap: 2px;
}
.ink-stat dd { margin: 0; font-family: var(--font-display); font-size: clamp(1.35rem, 3vw, 1.8rem); font-weight: 700; color: var(--navy); }
.ink-stat dt { font-size: 0.74rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-faint); }

/* ---------- Ticker ---------- */
.ink-ticker { background: var(--navy); color: var(--paper); overflow: hidden; padding: 11px 0; border-block: 2px solid var(--ink); }
.ink-ticker-track { display: flex; gap: 26px; width: max-content; animation: ink-ticker 28s linear infinite; will-change: transform; }
.ink-ticker:hover .ink-ticker-track { animation-play-state: paused; }
.ink-ticker-track span { font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; white-space: nowrap; }
.ink-ticker-track i { color: var(--marker); font-style: normal; }
@keyframes ink-ticker { to { transform: translateX(-50%); } }

/* ---------- Sections ---------- */
.ink-section { padding: clamp(48px, 7vw, 84px) 0; }
.ink-section-tint { background: var(--paper-deep); border-block: 1px solid var(--line); }
.ink-section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; margin-bottom: clamp(26px, 4vw, 40px); }

/* ---------- Class cards ---------- */
.ink-class-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.ink-class-card {
	position: relative; display: flex; flex-direction: column; gap: 8px;
	padding: 20px 18px 16px; min-height: 168px;
	background: var(--paper-card); border: 1.5px solid var(--line);
	border-radius: var(--radius-lg); color: var(--ink);
	box-shadow: var(--shadow-card); overflow: hidden;
	transition: transform 0.3s var(--ease-spring), box-shadow 0.3s, border-color 0.3s;
}
.ink-class-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); border-color: var(--navy); color: var(--ink); }
.ink-class-num {
	position: absolute; right: 6px; top: -18px;
	font-family: var(--font-display); font-size: 5.4rem; font-weight: 800;
	color: transparent; -webkit-text-stroke: 1.5px var(--line-strong);
	transition: color 0.3s, -webkit-text-stroke-color 0.3s;
	line-height: 1; pointer-events: none;
}
.ink-class-card:hover .ink-class-num { color: var(--marker); -webkit-text-stroke-color: var(--ink); }
.ink-class-name { font-family: var(--font-display); font-size: 1.25rem; font-weight: 700; margin-top: auto; display: flex; flex-direction: column; }
.ink-class-name em {
	font-style: normal; font-family: var(--font-mono); font-size: 0.62rem;
	letter-spacing: 0.1em; text-transform: uppercase; color: var(--verm-deep); margin-top: 3px;
}
.ink-class-subjects { font-size: 0.82rem; color: var(--ink-faint); }
.ink-class-go { color: var(--navy); }

/* ---------- Resource cards (sticky notes) ---------- */
.ink-res-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.ink-res-card {
	display: flex; flex-direction: column; gap: 10px;
	padding: 22px 20px; min-height: 215px;
	background: var(--paper-card); border: 1.5px solid var(--ink);
	border-radius: 4px 18px 4px 18px; color: var(--ink);
	box-shadow: 5px 5px 0 rgba(33, 30, 24, 0.14);
	transform: rotate(var(--tilt, 0deg));
	transition: transform 0.3s var(--ease-spring), box-shadow 0.3s;
}
.ink-res-card:hover { transform: rotate(0deg) translateY(-6px); box-shadow: 7px 9px 0 rgba(216, 73, 31, 0.32); color: var(--ink); }
.ink-res-tag {
	align-self: flex-start; font-family: var(--font-mono); font-size: 0.68rem;
	letter-spacing: 0.1em; text-transform: uppercase;
	background: var(--marker); padding: 3px 10px; border-radius: 3px;
}
.ink-res-card h3 { font-size: 1.3rem; margin: 4px 0 0; }
.ink-res-card p { margin: 0; font-size: 0.92rem; color: var(--ink-soft); flex: 1; }
.ink-res-go { display: inline-flex; align-items: center; gap: 7px; font-weight: 700; font-size: 0.92rem; color: var(--verm-deep); }

/* ---------- Subject list ---------- */
.ink-sbj-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 40px; }
.ink-sbj {
	display: flex; align-items: center; gap: 16px;
	padding: 17px 6px; border-bottom: 1px solid var(--line);
	color: var(--ink); position: relative;
}
.ink-sbj::before {
	content: ""; position: absolute; inset: 4px -10px; border-radius: 12px;
	background: var(--paper-card); opacity: 0; transform: scale(0.97);
	transition: opacity 0.25s, transform 0.25s var(--ease-spring);
	z-index: 0;
}
.ink-sbj:hover::before { opacity: 1; transform: none; box-shadow: var(--shadow-card); }
.ink-sbj > * { position: relative; z-index: 1; }
.ink-sbj-index { font-family: var(--font-mono); font-size: 0.78rem; color: var(--verm-deep); }
.ink-sbj-body { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.ink-sbj-body b { font-family: var(--font-display); font-size: 1.18rem; font-weight: 700; }
.ink-sbj-body span { font-size: 0.84rem; color: var(--ink-faint); }
.ink-sbj .ink-arr { color: var(--navy); opacity: 0; transform: translateX(-6px); transition: opacity 0.25s, transform 0.3s var(--ease-spring); }
.ink-sbj:hover .ink-arr { opacity: 1; transform: none; }

/* ---------- Panels (popular + latest) ---------- */
.ink-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; align-items: start; }
.ink-panel {
	background: var(--paper-card); border: 1.5px solid var(--line);
	border-radius: var(--radius-lg); padding: clamp(18px, 3vw, 28px);
	box-shadow: var(--shadow-card);
}
.ink-panel-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.ink-panel-head h2 { font-size: 1.45rem; margin: 0; flex: 1; }
.ink-panel-tag {
	font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.12em;
	text-transform: uppercase; color: var(--sage);
	border: 1px solid currentColor; border-radius: 999px; padding: 3px 10px;
}
.ink-rank-list { list-style: none; margin: 0; padding: 0; counter-reset: rank; }
.ink-rank-list a {
	display: flex; align-items: center; gap: 14px;
	padding: 12px 8px; margin-inline: -8px; border-radius: 12px; color: var(--ink);
	transition: background-color 0.2s;
}
.ink-rank-list li + li a { border-top: 1px dashed var(--line); }
.ink-rank-list a:hover { background: var(--paper); }
.ink-rank-num {
	flex: none; width: 34px; height: 34px; display: grid; place-items: center;
	font-family: var(--font-display); font-weight: 700; font-size: 1.05rem;
	border: 1.5px solid var(--ink); border-radius: 50%;
	transition: background-color 0.2s, color 0.2s, transform 0.3s var(--ease-spring);
}
.ink-rank-list a:hover .ink-rank-num { background: var(--marker); transform: rotate(-8deg); }
.ink-rank-body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.ink-rank-body b { font-weight: 700; font-size: 0.99rem; }
.ink-rank-body span { font-size: 0.83rem; color: var(--ink-faint); }
.ink-rank-list .ink-arr { color: var(--navy); opacity: 0; transition: opacity 0.2s, transform 0.3s var(--ease-spring); }
.ink-rank-list a:hover .ink-arr { opacity: 1; transform: translateX(2px); }

.ink-latest-list { list-style: none; margin: 0; padding: 0; }
.ink-latest-list a {
	display: flex; flex-direction: column; gap: 2px;
	padding: 12px 8px; margin-inline: -8px; border-radius: 12px; color: var(--ink);
	transition: background-color 0.2s;
}
.ink-latest-list li + li a { border-top: 1px dashed var(--line); }
.ink-latest-list a:hover { background: var(--paper); }
.ink-latest-list b { font-weight: 600; font-size: 0.97rem; }
.ink-latest-list b:hover { color: var(--verm-deep); }
.ink-latest-list time { font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-faint); }
.ink-empty { color: var(--ink-faint); }

/* ---------- Page hero (archive / search / single) ---------- */
.ink-page-hero {
	padding: clamp(34px, 6vw, 64px) 0 clamp(22px, 4vw, 40px);
	border-bottom: 1px solid var(--line);
	background: linear-gradient(180deg, var(--paper-deep), transparent);
}
.ink-page-title { font-size: clamp(1.9rem, 4.6vw, 3.1rem); margin: 0 0 12px; max-width: 880px; }
.ink-page-sub { color: var(--ink-soft); max-width: 640px; margin: 0 0 8px; }
.ink-page-count { font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink-faint); margin: 4px 0 0; }
.ink-page-search { max-width: 520px; margin-top: 18px; }

.ink-crumbs { margin-bottom: 14px; }
.ink-crumbs ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0; padding: 0; font-size: 0.82rem; }
.ink-crumbs li { color: var(--ink-faint); }
.ink-crumbs li + li::before { content: "›"; margin-right: 6px; color: var(--line-strong); }
.ink-crumbs a { color: var(--ink-soft); font-weight: 600; }
.ink-crumbs a:hover { color: var(--verm-deep); }

/* ---------- Search form ---------- */
.ink-searchform {
	display: flex; align-items: center; gap: 8px;
	padding: 6px 6px 6px 14px; background: var(--paper-card);
	border: 2px solid var(--line-strong); border-radius: 999px;
	transition: border-color 0.2s, box-shadow 0.2s;
}
.ink-searchform:focus-within { border-color: var(--ink); box-shadow: 3px 3px 0 var(--ink); }
.ink-searchform svg { width: 18px; height: 18px; color: var(--ink-faint); flex: none; }
.ink-searchform input { flex: 1; min-width: 0; border: none; background: none; padding: 9px 2px; font-size: 0.98rem; color: var(--ink); }
.ink-searchform input:focus { outline: none; }
.ink-searchform button {
	border: none; border-radius: 999px; padding: 9px 18px;
	background: var(--navy); color: #fff; font-weight: 700; font-size: 0.9rem;
	transition: background-color 0.2s;
}
.ink-searchform button:hover { background: var(--verm-deep); }

/* ---------- Post cards ---------- */
.ink-card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.ink-card {
	display: flex; flex-direction: column;
	background: var(--paper-card); border: 1.5px solid var(--line);
	border-radius: var(--radius-lg); overflow: hidden;
	box-shadow: var(--shadow-card);
	transition: transform 0.3s var(--ease-spring), box-shadow 0.3s, border-color 0.3s;
}
.ink-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); border-color: var(--line-strong); }
.ink-card-media { overflow: hidden; aspect-ratio: 16 / 10; background: var(--paper-deep); }
.ink-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease-out); }
.ink-card:hover .ink-card-media img { transform: scale(1.05); }
.ink-card-body { display: flex; flex-direction: column; gap: 9px; padding: 20px; flex: 1; }
.ink-card-cat {
	align-self: flex-start; font-family: var(--font-mono); font-size: 0.66rem;
	letter-spacing: 0.12em; text-transform: uppercase;
	color: var(--verm-deep); border: 1px solid var(--verm); border-radius: 999px; padding: 3px 10px;
}
.ink-card-title { font-size: 1.22rem; margin: 0; }
.ink-card-title a { color: var(--ink); background-image: linear-gradient(var(--verm), var(--verm)); background-repeat: no-repeat; background-size: 0% 2px; background-position: 0 96%; transition: background-size 0.35s var(--ease-out); }
.ink-card:hover .ink-card-title a { background-size: 100% 2px; }
.ink-card-excerpt { margin: 0; font-size: 0.92rem; color: var(--ink-soft); flex: 1; }
.ink-card-foot { display: flex; align-items: center; gap: 9px; font-family: var(--font-mono); font-size: 0.74rem; color: var(--ink-faint); }
.ink-card-foot .ink-arr { margin-left: auto; color: var(--navy); }

.ink-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink-faint); }
.ink-meta-dot { width: 4px; height: 4px; border-radius: 50%; background: var(--line-strong); }
.ink-meta-cat { color: var(--verm-deep); font-weight: 600; }

/* ---------- Pagination ---------- */
.ink-pagination { display: flex; justify-content: center; gap: 7px; margin-top: clamp(32px, 5vw, 48px); flex-wrap: wrap; }
.ink-pagination .page-numbers {
	min-width: 44px; height: 44px; padding: 0 13px;
	display: inline-grid; place-items: center;
	border: 1.5px solid var(--line-strong); border-radius: 12px;
	font-weight: 700; font-size: 0.95rem; color: var(--ink);
	transition: all 0.2s var(--ease-spring);
}
.ink-pagination .page-numbers:hover { border-color: var(--ink); transform: translateY(-2px); }
.ink-pagination .page-numbers.current { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.ink-pagination .page-numbers.dots { border: none; }

/* ---------- Article ---------- */
.ink-article-wrap { max-width: 1020px; }
.ink-article-hero .ink-chip { margin-bottom: 14px; }
.ink-article-figure { padding-top: clamp(20px, 4vw, 36px); }
.ink-article-figure img { border-radius: var(--radius-lg); border: 1.5px solid var(--line); box-shadow: var(--shadow-card); width: 100%; }
.ink-featured-inline { margin: 1.7em 0; }
.ink-featured-inline img { width: 100%; height: auto; border-radius: var(--radius-lg); border: 1.5px solid var(--line); box-shadow: var(--shadow-card); }

/* Article grid: columns appear based on .has-left / .has-right (theme options). */
.ink-article-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: clamp(28px, 5vw, 48px); padding-block: clamp(28px, 5vw, 52px); max-width: 1280px; }
.ink-article-layout.has-right { grid-template-columns: minmax(0, 1fr) 290px; }
.ink-article-layout.has-left.has-right { grid-template-columns: 232px minmax(0, 1fr) 290px; }
.ink-article-layout.has-left:not(.has-right) { grid-template-columns: 232px minmax(0, 1fr); }
.ink-article-left { min-width: 0; }
/* ICSE classes tree (left rail accordion) */
.ink-classes-acc details { border-top: 1px dashed var(--line); }
.ink-classes-acc details:first-of-type { border-top: none; }
.ink-classes-acc summary {
	display: flex; align-items: center; gap: 10px;
	padding: 10px 2px; cursor: pointer; list-style: none;
	font-family: var(--font-display); font-weight: 700; font-size: 1.02rem; color: var(--ink);
	transition: color 0.2s;
}
.ink-classes-acc summary::-webkit-details-marker { display: none; }
.ink-classes-acc summary:hover { color: var(--verm-deep); }
.ink-acc-num {
	width: 28px; height: 28px; flex: none; display: grid; place-items: center;
	border: 1.5px solid var(--line-strong); border-radius: 8px;
	font-size: 0.85rem; transition: all 0.25s var(--ease-spring);
}
.ink-classes-acc details[open] .ink-acc-num { background: var(--marker); border-color: var(--ink); }
.ink-acc-chev { width: 15px; height: 15px; margin-left: auto; color: var(--ink-faint); transition: transform 0.3s var(--ease-spring); }
.ink-classes-acc details[open] .ink-acc-chev { transform: rotate(180deg); }
.ink-classes-acc ul { list-style: none; margin: 0 0 10px; padding: 0 0 0 38px; }
.ink-classes-acc ul a {
	display: block; padding: 6px 2px; font-size: 0.9rem; font-weight: 600;
	color: var(--ink-soft); border-left: 2px solid var(--line); padding-left: 12px; margin-left: -14px;
	transition: color 0.2s, border-color 0.2s, transform 0.2s var(--ease-spring);
}
.ink-classes-acc ul a:hover { color: var(--verm-deep); border-left-color: var(--verm); transform: translateX(2px); }
.ink-classes-acc ul a.is-active { color: var(--verm-deep); border-left-color: var(--verm); }
.ink-classes-acc .ink-acc-all { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.04em; text-transform: uppercase; }

.ink-aside-classes { display: flex; gap: 7px; flex-wrap: wrap; }
.ink-aside-classes a {
	width: 40px; height: 40px; display: grid; place-items: center;
	border: 1.5px solid var(--line-strong); border-radius: 10px;
	font-family: var(--font-display); font-weight: 700; color: var(--ink);
	transition: all 0.2s var(--ease-spring);
}
.ink-aside-classes a:hover { background: var(--navy); border-color: var(--navy); color: #fff; transform: translateY(-2px); }
.ink-aside-links a.is-active { color: var(--verm-deep); }
.ink-article-content { min-width: 0; font-size: 1.08rem;     line-height: 1.8rem;}
.ink-article-content > p:first-child { font-size: 1.16rem; color: var(--ink-soft); }
.ink-article-content h2 { font-size: 1.65rem; margin: 1.6em 0 0.5em; }
.ink-article-content h3 { font-size: 1.3rem; margin: 1.5em 0 0.5em; }
.ink-article-content a { text-decoration: underline; text-decoration-color: rgba(216, 73, 31, 0.4); text-underline-offset: 3px; transition: text-decoration-color 0.2s; }
.ink-article-content a:hover { text-decoration-color: var(--verm); }
.ink-article-content img { border-radius: var(--radius); }
.ink-article-content blockquote {
	margin: 1.6em 0; padding: 4px 0 4px 22px;
	border-left: 4px solid var(--marker);
	font-family: var(--font-display); font-size: 1.15em; font-style: italic; color: var(--ink-soft);
}
.ink-article-content table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: 0.95rem; background: var(--paper-card); border-radius: var(--radius); overflow: hidden; }
.ink-article-content th, .ink-article-content td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.ink-article-content th { background: var(--paper-deep); font-weight: 700; }
.ink-article-content pre { background: var(--navy); color: #f4f1e8; padding: 18px 20px; border-radius: var(--radius); overflow-x: auto; font-family: var(--font-mono); font-size: 0.88rem; }
.ink-article-content code { font-family: var(--font-mono); font-size: 0.92em; }
.ink-article-content :not(pre) > code { background: var(--paper-deep); padding: 0.15em 0.4em; border-radius: 5px; }

.ink-aside-sticky { position: sticky; top: 90px; display: flex; flex-direction: column; gap: 18px; }
.ink-aside-box, .ink-widget { background: var(--paper-card); border: 1.5px solid var(--line); border-radius: var(--radius-lg); padding: 20px 22px; box-shadow: var(--shadow-card); }
.ink-widget-title { font-size: 1.05rem; margin: 0 0 12px; }
.ink-aside-links { list-style: none; margin: 0; padding: 0; }
.ink-aside-links li + li { border-top: 1px dashed var(--line); }
.ink-aside-links a { display: block; padding: 9px 2px; font-weight: 600; font-size: 0.92rem; color: var(--ink-soft); }
.ink-aside-links a:hover { color: var(--verm-deep); }

/* ---------- Smart Study Nav widget (CTR / anti-bounce) ---------- */
.ink-smartnav-list { list-style: none; margin: 0 0 4px; padding: 0; counter-reset: ink-next; }
.ink-smartnav-list li { counter-increment: ink-next; }
.ink-smartnav-list li + li { border-top: 1px dashed var(--line); }
.ink-smartnav-list a {
	display: flex; align-items: center; gap: 10px;
	padding: 10px 4px; font-weight: 600; font-size: 0.92rem; color: var(--ink-soft);
	transition: color 0.2s, transform 0.25s var(--ease-spring);
}
.ink-smartnav-list a::before {
	content: counter(ink-next, decimal-leading-zero);
	font-family: var(--font-mono); font-size: 0.7rem; color: var(--verm-deep);
}
.ink-smartnav-list a span { flex: 1; min-width: 0; }
.ink-smartnav-list a .ink-arr { width: 15px; height: 15px; color: var(--navy); opacity: 0; transform: translateX(-5px); transition: opacity 0.2s, transform 0.3s var(--ease-spring); }
.ink-smartnav-list a:hover { color: var(--ink); transform: translateX(3px); }
.ink-smartnav-list a:hover .ink-arr { opacity: 1; transform: none; }

.ink-smartnav-label {
	font-family: var(--font-mono); font-size: 0.66rem; font-weight: 600;
	letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-faint);
	margin: 16px 0 4px; padding-top: 12px; border-top: 1.5px solid var(--line);
}
.ink-smartnav-pop { list-style: none; margin: 0 0 16px; padding: 0; }
.ink-smartnav-pop a { display: block; padding: 7px 2px; font-size: 0.88rem; font-weight: 600; color: var(--ink-soft); }
.ink-smartnav-pop a:hover { color: var(--verm-deep); }

.ink-smartnav-cta {
	display: flex; flex-direction: column; gap: 3px;
	padding: 14px 16px; border-radius: 4px 14px 4px 14px;
	background: var(--marker); border: 2px solid var(--ink);
	box-shadow: 4px 4px 0 var(--ink); color: var(--ink);
	transition: transform 0.25s var(--ease-spring), box-shadow 0.25s var(--ease-spring);
}
.ink-smartnav-cta:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--verm); color: var(--ink); }
.ink-smartnav-cta-kicker { font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--verm-deep); }
.ink-smartnav-cta-label { display: flex; align-items: center; gap: 8px; font-family: var(--font-display); font-weight: 700; font-size: 1.02rem; }
.ink-smartnav-cta-label .ink-arr { width: 16px; height: 16px; }

.ink-tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 30px; }

.ink-post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 36px; }
.ink-post-nav > div {
	border: 1.5px solid var(--line); border-radius: var(--radius);
	padding: 14px 18px; background: var(--paper-card);
	display: flex; flex-direction: column; gap: 4px;
	transition: border-color 0.2s, transform 0.25s var(--ease-spring);
}
.ink-post-nav > div:hover { border-color: var(--navy); transform: translateY(-2px); }
.ink-post-nav-next { text-align: right; grid-column: 2; }
.ink-post-nav span { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); }
.ink-post-nav a { font-weight: 700; color: var(--ink); }
.ink-post-nav a:hover { color: var(--verm-deep); }

.ink-link-pages { margin: 1.6em 0; font-weight: 600; }

/* ---------- Full Width template ---------- */
.ink-fullwidth { padding-bottom: clamp(40px, 6vw, 70px); }
.ink-content-wide { max-width: none; padding-block: clamp(24px, 4vw, 44px); }

/* ---------- Section Landing template ---------- */
.ink-landing-hero {
	position: relative; overflow: hidden;
	padding: clamp(44px, 8vw, 90px) 0 clamp(30px, 5vw, 54px);
	border-bottom: 2px solid var(--ink);
	background: linear-gradient(180deg, var(--paper-deep), var(--paper));
}
.ink-landing-hero .ink-page-title { font-size: clamp(2.2rem, 5.5vw, 3.6rem); }
.ink-landing-children { padding-block: clamp(10px, 3vw, 30px) clamp(44px, 6vw, 70px); }
.ink-landing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.ink-landing-card {
	position: relative; display: flex; flex-direction: column; gap: 7px;
	padding: 22px 20px 18px;
	background: var(--paper-card); border: 1.5px solid var(--line);
	border-radius: var(--radius-lg); color: var(--ink);
	box-shadow: var(--shadow-card);
	transition: transform 0.3s var(--ease-spring), box-shadow 0.3s, border-color 0.3s;
}
.ink-landing-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lift); border-color: var(--navy); color: var(--ink); }
.ink-landing-num { font-family: var(--font-mono); font-size: 0.72rem; color: var(--verm-deep); }
.ink-landing-card h3 { font-size: 1.2rem; margin: 0; }
.ink-landing-card p { margin: 0; font-size: 0.9rem; color: var(--ink-soft); }
.ink-landing-card .ink-res-go { margin-top: auto; padding-top: 8px; }

/* ---------- PDF Download template ---------- */
.ink-dl .ink-page-title { font-size: clamp(1.6rem, 3.6vw, 2.4rem); }
.ink-dl-frame {
	border: 2px solid var(--ink); border-radius: var(--radius-lg);
	overflow: hidden; background: var(--paper-deep);
	box-shadow: 6px 6px 0 rgba(33, 30, 24, 0.16);
	margin: 10px 0 26px;
}
.ink-dl-frame iframe { display: block; width: 100%; height: 70vh; min-height: 480px; border: none; }
.ink-dl-action { text-align: center; margin-bottom: 26px; }
.ink-btn-verm { background: var(--verm); color: #fff; border: none; }
.ink-btn-verm:hover { background: var(--verm-deep); color: #fff; }
.ink-btn-navy { background: var(--navy); color: #fff; }
.ink-btn-navy:hover { color: #fff; }
#dl-countdown-wrap p { color: var(--ink-soft); margin: 0 0 10px; }
#dl-countdown-wrap strong { color: var(--verm-deep); font-size: 1.15em; }
.ink-dl-track {
	height: 8px; max-width: 340px; margin: 0 auto;
	border-radius: 99px; background: var(--line); overflow: hidden;
}
.ink-dl-track span { display: block; height: 100%; width: 0; border-radius: 99px; background: linear-gradient(90deg, var(--verm), var(--marker)); transition: width 1s linear; }
.ink-dl-more { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; }
.ink-dl-more > span { font-size: 0.85rem; font-weight: 600; color: var(--ink-faint); }

/* ---------- Layout: Focus (distraction-free) ---------- */
.ink-focus-wrap { max-width: 760px; }
.ink-focus-hero { padding: clamp(44px, 8vw, 90px) 0 clamp(18px, 3vw, 34px); text-align: center; }
.ink-focus-hero .ink-crumbs ol { justify-content: center; }
.ink-focus-hero .ink-meta { justify-content: center; }
.ink-focus-hero .ink-page-title { font-size: clamp(2.1rem, 5vw, 3.4rem); margin-inline: auto; }
.ink-focus-content { font-size: 1.16rem; line-height: 1.78; padding-block: clamp(20px, 4vw, 40px); }
.ink-focus-content > p:first-child { font-size: 1.26rem; }
.ink-focus-foot { text-align: center; padding-bottom: clamp(30px, 5vw, 50px); }

/* ---------- Layout: Notebook (ruled paper) ---------- */
.ink-notebook-toc {
	margin: clamp(20px, 4vw, 36px) 0 0;
	background: var(--paper-card); border: 1.5px solid var(--line);
	border-left: 5px solid var(--marker);
	border-radius: var(--radius); padding: 18px 22px;
	box-shadow: var(--shadow-card);
}
.ink-notebook-toc ol { margin: 0; padding-left: 20px; columns: 2; column-gap: 36px; }
.ink-notebook-toc li { margin-bottom: 6px; break-inside: avoid; }
.ink-notebook-toc a { color: var(--ink-soft); font-weight: 600; font-size: 0.94rem; }
.ink-notebook-toc a:hover { color: var(--verm-deep); }

.ink-notebook-paper {
	--rule: 2.05rem;
	position: relative;
	margin: clamp(20px, 4vw, 36px) 0 clamp(30px, 5vw, 50px);
	background-color: var(--paper-card);
	background-image: repeating-linear-gradient(transparent 0, transparent calc(var(--rule) - 1px), #dce4ef var(--rule));
	background-position: 0 14px;
	border: 1.5px solid var(--line-strong);
	border-radius: 6px 18px 18px 6px;
	box-shadow: var(--shadow-card), 12px 12px 0 -4px var(--paper-deep), 12px 12px 0 -2.5px var(--line);
	padding: clamp(22px, 4vw, 40px) clamp(20px, 4.5vw, 52px) clamp(26px, 4vw, 44px) clamp(54px, 8vw, 96px);
}
.ink-notebook-paper::before {
	content: ""; position: absolute; top: 0; bottom: 0;
	left: clamp(34px, 5.5vw, 64px); width: 2px;
	background: rgba(216, 73, 31, 0.45);
}
.ink-notebook-content { line-height: var(--rule); font-size: 1.05rem; }
.ink-notebook-content h2, .ink-notebook-content h3 { line-height: var(--rule); margin: var(--rule) 0 0; scroll-margin-top: 90px; }
.ink-notebook-content p, .ink-notebook-content ul, .ink-notebook-content ol { margin: 0 0 var(--rule); }
.ink-notebook-content blockquote {
	margin: var(--rule) 0; padding: 14px 18px;
	background: var(--marker); border: none; border-radius: 4px 14px 4px 14px;
	box-shadow: 4px 4px 0 rgba(33, 30, 24, 0.18);
	transform: rotate(-0.5deg);
	font-family: var(--font-body); font-style: normal; font-size: 0.98rem;
	line-height: 1.55; color: var(--ink);
}
.ink-notebook-content blockquote::before { content: "✎ Exam tip"; display: block; font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 6px; color: var(--verm-deep); }

/* ---------- Layout: Magazine (editorial) ---------- */
.ink-mag-hero { position: relative; padding: clamp(40px, 7vw, 80px) 0; border-bottom: 2px solid var(--ink); overflow: hidden; }
.ink-mag-hero.has-image { padding: clamp(70px, 12vw, 150px) 0 clamp(36px, 6vw, 64px); }
.ink-mag-media { position: absolute; inset: 0; }
.ink-mag-media img {
	width: 100%; height: 100%; object-fit: cover;
	filter: grayscale(1) sepia(0.35) contrast(1.05) brightness(0.92);
	opacity: 0.34;
}
.ink-mag-hero.has-image::after {
	content: ""; position: absolute; inset: 0;
	background: linear-gradient(180deg, rgba(250, 245, 235, 0.2), var(--paper) 88%);
}
.ink-mag-hero-inner { position: relative; z-index: 1; max-width: 1020px; }
.ink-mag-title { font-size: clamp(2.4rem, 6.5vw, 4.4rem); font-weight: 720; letter-spacing: -0.02em; margin: 14px 0 16px; max-width: 900px; }
.ink-mag-standfirst { font-family: var(--font-display); font-style: italic; font-size: clamp(1.05rem, 2vw, 1.35rem); color: var(--ink-soft); max-width: 680px; margin: 0 0 14px; }
.ink-mag-content { padding-block: clamp(26px, 5vw, 50px); font-size: 1.1rem; }
.ink-mag-content > p:first-of-type { font-size: 1.18rem; }
.ink-mag-content > p:first-of-type::first-letter {
	font-family: var(--font-display); font-weight: 800;
	font-size: 4.1em; line-height: 0.82;
	float: left; padding: 0.08em 0.12em 0 0;
	color: var(--verm);
}
.ink-mag-content blockquote {
	border-left: none; padding: 0.2em 0 0.2em 0;
	margin: 1.8em 0; text-align: center;
	font-size: 1.45em; line-height: 1.35; font-weight: 600;
	color: var(--navy); position: relative;
}
.ink-mag-content blockquote::before { content: "“"; display: block; font-size: 2.2em; line-height: 0.6; color: var(--verm); }

@media (max-width: 700px) {
	.ink-notebook-toc ol { columns: 1; }
	.ink-notebook-paper { border-radius: 4px 12px 12px 4px; }
}

/* ---------- Author box (legacy in-content markup from the pipeline) ---------- */
.icse-author-about {
	margin: clamp(28px, 5vw, 44px) 0 0;
	padding: clamp(18px, 3vw, 28px);
	background: var(--paper-card); border: 1.5px solid var(--line);
	border-radius: var(--radius-lg); box-shadow: var(--shadow-card);
}
.icse-author-about__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 14px; }
.icse-author-about__eyebrow {
	font-family: var(--font-mono); font-size: 0.7rem; font-weight: 600;
	letter-spacing: 0.16em; text-transform: uppercase; color: var(--verm-deep);
	margin: 0;
}
.icse-author-about__name { margin: 0; font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; }
.icse-author-about__name a { color: var(--ink); text-decoration: none; }
.icse-author-about__name a:hover { color: var(--verm-deep); }
.icse-author-about__divider { height: 1px; background: var(--line); margin: 12px 0 14px; }
.icse-author-about__role { margin: 0 0 8px; font-weight: 700; font-size: 0.92rem; color: var(--navy); }
.icse-author-about__bio { margin: 0 0 16px; font-size: 0.95rem; color: var(--ink-soft); }
.icse-author-about__links { display: flex; flex-wrap: wrap; gap: 10px; }
.icse-author-about__links a {
	display: inline-flex; align-items: center; gap: 6px;
	padding: 8px 16px; border-radius: 999px;
	font-size: 0.88rem; font-weight: 700; text-decoration: none;
	transition: transform 0.25s var(--ease-spring), box-shadow 0.25s, background-color 0.2s;
}
.icse-author-about__links a:hover { transform: translateY(-2px); }
.icse-author-about__social { background: var(--navy); color: #fff !important; }
.icse-author-about__social:hover { background: var(--verm-deep); }
.icse-author-about__social::before { content: "in"; font-family: var(--font-display); font-weight: 800; font-size: 0.8rem; }
.icse-author-about__profile { border: 1.5px solid var(--line-strong); color: var(--ink-soft) !important; background: var(--paper-card); }
.icse-author-about__profile:hover { border-color: var(--verm); color: var(--verm-deep) !important; }

/* ---------- Comments ---------- */
.ink-comments-wrap { padding-bottom: clamp(40px, 6vw, 70px); }
.ink-comments { border-top: 2px solid var(--ink); padding-top: 30px; }
.ink-comments-title { font-size: 1.5rem; }
.ink-comment-list { list-style: none; margin: 0 0 24px; padding: 0; }
.ink-comment-list .comment-body {
	background: var(--paper-card); border: 1px solid var(--line);
	border-radius: var(--radius); padding: 16px 18px; margin-bottom: 14px;
}
.ink-comment-list .children { list-style: none; padding-left: clamp(16px, 4vw, 40px); }
.ink-comment-list .avatar { border-radius: 50%; }
.comment-form label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 5px; }
.comment-form input[type="text"], .comment-form input[type="email"], .comment-form input[type="url"], .comment-form textarea {
	width: 100%; padding: 11px 14px; border: 1.5px solid var(--line-strong);
	border-radius: 10px; background: var(--paper-card); color: var(--ink);
	font-family: inherit; font-size: 0.98rem; margin-bottom: 14px;
}
.comment-form input:focus, .comment-form textarea:focus { border-color: var(--verm); outline: none; }
.comment-form .submit {
	border: none; border-radius: 999px; padding: 12px 26px;
	background: var(--navy); color: #fff; font-weight: 700;
	transition: background-color 0.2s, transform 0.25s var(--ease-spring);
}
.comment-form .submit:hover { background: var(--verm-deep); transform: translateY(-2px); }

/* ---------- Empty states / 404 ---------- */
.ink-none { max-width: 520px; margin-inline: auto; text-align: center; padding: 30px 0; }
.ink-none-mark { font-family: var(--font-display); font-size: 4rem; margin: 0; color: var(--line-strong); }
.ink-none-links { display: flex; flex-wrap: wrap; gap: 9px; justify-content: center; margin-top: 20px; }
.ink-none .ink-searchform { margin-top: 18px; }

.ink-404 { text-align: center; padding-block: clamp(60px, 10vw, 120px); }
.ink-404-code { font-family: var(--font-display); font-size: clamp(5rem, 16vw, 10rem); font-weight: 800; line-height: 1; margin: 0 0 10px; color: var(--ink); }
.ink-404 .ink-page-title { margin-inline: auto; }
.ink-404 .ink-page-sub { margin-inline: auto; }
.ink-404 .ink-page-search { margin-inline: auto; }

/* ---------- Footer ---------- */
.ink-footer { margin-top: clamp(40px, 7vw, 80px); }
.ink-footer-cta {
	background: var(--navy);
	background-image: radial-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px);
	background-size: 22px 22px;
	color: #f4f1e8; text-align: center;
	padding: clamp(46px, 7vw, 80px) 0;
	border-block: 2px solid var(--ink);
}
.ink-footer-cta-title { color: #fff; font-size: clamp(1.7rem, 4vw, 2.6rem); max-width: 620px; margin-inline: auto; }
.ink-footer-cta p { color: rgba(244, 241, 232, 0.75); max-width: 480px; margin: 0 auto 26px; }

.ink-footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 34px; padding-block: clamp(36px, 6vw, 60px); }
.ink-footer-brand p { color: var(--ink-soft); font-size: 0.93rem; margin-top: 12px; max-width: 300px; }
.ink-footer-col h3 { font-size: 0.85rem; font-family: var(--font-mono); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 14px; }
.ink-footer-col ul { list-style: none; margin: 0; padding: 0; }
.ink-footer-col li { margin-bottom: 9px; }
.ink-footer-col a { color: var(--ink-soft); font-weight: 600; font-size: 0.94rem; position: relative; }
.ink-footer-col a:hover { color: var(--verm-deep); }
.ink-footer-legal { border-top: 1px solid var(--line); padding: 18px 0; }
.ink-footer-legal p { margin: 0; font-size: 0.82rem; color: var(--ink-faint); }

/* ---------- Back to top ---------- */
.ink-top {
	position: fixed; right: 18px; bottom: 18px; z-index: 90;
	width: 48px; height: 48px; border-radius: 14px;
	border: 2px solid var(--ink); background: var(--marker); color: var(--ink);
	display: grid; place-items: center; box-shadow: 3px 3px 0 var(--ink);
	transition: transform 0.25s var(--ease-spring), box-shadow 0.25s;
}
.ink-top:hover { transform: translate(-2px, -4px); box-shadow: 5px 7px 0 var(--ink); }
.ink-top svg { width: 20px; height: 20px; }
.ink-top[hidden] { display: none; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1080px) {
	.ink-nav { display: none; }
	.ink-burger { display: inline-flex; }
	.ink-class-row { grid-template-columns: repeat(3, 1fr); }
	.ink-res-grid { grid-template-columns: repeat(2, 1fr); }
	.ink-card-grid { grid-template-columns: repeat(2, 1fr); }
	.ink-landing-grid { grid-template-columns: repeat(2, 1fr); }
	.ink-article-layout, .ink-article-layout.has-right, .ink-article-layout.has-left.has-right, .ink-article-layout.has-left:not(.has-right) { grid-template-columns: 1fr; }
	.ink-article-left { order: 2; }
	.ink-article-aside { order: 3; }
	.ink-aside-sticky { position: static; }
	.ink-footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 700px) {
	body { font-size: 1rem; }
	.ink-section-head { flex-direction: column; align-items: flex-start; gap: 8px; }
	.ink-class-row { grid-template-columns: repeat(2, 1fr); }
	.ink-class-card { min-height: 142px; }
	.ink-sbj-grid { grid-template-columns: 1fr; }
	.ink-two-col { grid-template-columns: 1fr; }
	.ink-card-grid { grid-template-columns: 1fr; }
	.ink-landing-grid { grid-template-columns: 1fr; }
	.ink-res-grid { grid-template-columns: 1fr; }
	.ink-res-card { min-height: 0; }
	.ink-hero-stats { grid-template-columns: repeat(2, 1fr); }
	.ink-hero-search { flex-wrap: nowrap; }
	.ink-hero-search button { padding: 10px 16px; font-size: 0.9rem; }
	.ink-post-nav { grid-template-columns: 1fr; }
	.ink-post-nav-next { grid-column: auto; }
	.ink-footer-grid { grid-template-columns: 1fr; gap: 26px; }
	.ink-top { right: 12px; bottom: 12px; width: 44px; height: 44px; }
}

@media (max-width: 380px) {
	.ink-class-row { grid-template-columns: 1fr; }
	.ink-hero-search { padding-left: 12px; }
}