/*
Theme Name: DSP Academy
Template: generatepress
Version: 2.0.0
Description: "Lab instrument" documentation theme for dsp-academy.com (Digital Signal Processing): oscilloscope hero, course navigation with progress, table of contents, light/dark, KaTeX and code blocks. Fonts: IBM Plex Sans + JetBrains Mono.
Text Domain: dspacademy-child
*/

/* ================= Tokens ================= */
:root, [data-theme="light"] {
	--dsp-bg: #ffffff; --dsp-bg2: #f6f8fc; --dsp-surface: #f3f6fb; --dsp-card: #ffffff;
	--dsp-ink: #0b1324; --dsp-ink2: #334155; --dsp-muted: #56657a; --dsp-line: #e2e8f0; --dsp-grid: #e8edf4;
	--dsp-accent: #15803d; --dsp-accent-ink: #166534; --dsp-accent-soft: #e9f7ef; --dsp-on-accent: #ffffff;
	--dsp-cyan: #0369a1; --dsp-blue: #0369a1; --dsp-green: #b45309;
	--dsp-grad: linear-gradient(100deg, #15803d 0%, #0369a1 100%);
	--dsp-code-bg: #f6f8fb; --dsp-code-ink: #1f2937; --dsp-ok: #15803d; --dsp-no: #b91c1c;
	--dsp-shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px -12px rgba(15, 23, 42, .18);
	--dsp-shadow-lg: 0 2px 4px rgba(15, 23, 42, .06), 0 24px 48px -20px rgba(15, 23, 42, .28);
	--dsp-header: rgba(255, 255, 255, .82);
	--dsp-scope-bg: #07111f; --dsp-scope-grid: rgba(148, 163, 184, .14); --dsp-scope-tr2: #94a3b8; --dsp-scope-dot: #e2e8f0; --dsp-scope-acc: #34d399;
	--dsp-font: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
	--dsp-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
	--dsp-r: 14px; --dsp-r-sm: 10px;
	--dsp-ease: cubic-bezier(.2, .7, .2, 1);
	color-scheme: light;
}
[data-theme="dark"] {
	--dsp-bg: #0a0f1c; --dsp-bg2: #0d1424; --dsp-surface: #111a2e; --dsp-card: #0f1729;
	--dsp-ink: #e6edf7; --dsp-ink2: #b4c0d3; --dsp-muted: #8f9db3; --dsp-line: #1f2b44; --dsp-grid: #1b2640;
	--dsp-accent: #34d399; --dsp-accent-ink: #6ee7b7; --dsp-accent-soft: rgba(52, 211, 153, .12); --dsp-on-accent: #052e1c;
	--dsp-cyan: #38bdf8; --dsp-blue: #38bdf8; --dsp-green: #fbbf24;
	--dsp-grad: linear-gradient(100deg, #34d399 0%, #38bdf8 100%);
	--dsp-code-bg: #0d1526; --dsp-code-ink: #e6edf7; --dsp-ok: #4ade80; --dsp-no: #f87171;
	--dsp-shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 30px -14px rgba(0, 0, 0, .7);
	--dsp-shadow-lg: 0 2px 6px rgba(0, 0, 0, .4), 0 30px 60px -24px rgba(0, 0, 0, .8);
	--dsp-header: rgba(10, 15, 28, .78);
	color-scheme: dark;
}

/* ================= Base ================= */
html, body { background: var(--dsp-bg); }
body { color: var(--dsp-ink); font-family: var(--dsp-font); font-size: 17px; line-height: 1.72; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
a { color: var(--dsp-accent-ink); text-decoration-thickness: 1px; text-underline-offset: 3px; transition: color .15s var(--dsp-ease); }
[data-theme="dark"] a { color: var(--dsp-accent); }
a:hover { color: var(--dsp-cyan); }
h1, h2, h3, h4 { color: var(--dsp-ink); font-family: var(--dsp-font); font-weight: 700; letter-spacing: -.02em; line-height: 1.2; }
h1 { font-size: clamp(1.9rem, 3.8vw, 2.6rem); }
h2 { font-size: 1.55rem; margin-top: 2.4em; }
h3 { font-size: 1.22rem; margin-top: 1.8em; }
p, li { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; }
::selection { background: var(--dsp-accent-soft); color: var(--dsp-ink); }
:focus-visible { outline: 2px solid var(--dsp-accent); outline-offset: 3px; border-radius: 4px; }
.separate-containers .inside-article, .one-container .site-content, .site-main, .inside-article, .site, .site-content, .comments-area { background: transparent; }
.separate-containers .inside-article { padding: 0; }
.entry-content table { border-collapse: collapse; width: 100%; display: block; overflow-x: auto; font-size: 15px; border: 1px solid var(--dsp-line); border-radius: var(--dsp-r-sm); }
.entry-content th, .entry-content td { border-bottom: 1px solid var(--dsp-line); padding: 10px 12px; text-align: left; }
.entry-content th { background: var(--dsp-surface); font-weight: 600; }
.entry-content img { height: auto; border-radius: var(--dsp-r-sm); }
.entry-content figure.wp-block-image { margin: 28px 0; }
.entry-content figure.wp-block-image img { border: 1px solid var(--dsp-line); background: #fff; }
.entry-content figcaption { font-size: 14px; color: var(--dsp-muted); text-align: left; margin-top: 8px; }
hr { background: var(--dsp-line); }
.dsp-kicker { font-family: var(--dsp-mono); font-size: 12px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--dsp-accent-ink); }
[data-theme="dark"] .dsp-kicker { color: var(--dsp-accent); }
.dsp-grad { background: var(--dsp-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ================= Header ================= */
.site-header { background: var(--dsp-header); -webkit-backdrop-filter: saturate(160%) blur(14px); backdrop-filter: saturate(160%) blur(14px); border-bottom: 1px solid var(--dsp-line); position: sticky; top: 0; z-index: 60; }
.admin-bar .site-header { top: 32px; }
@media (max-width: 782px) { .admin-bar .site-header { top: 0; position: relative; } }
.inside-header { padding-top: 8px; padding-bottom: 8px; max-width: 1440px; }
.main-title a, .site-title a { color: var(--dsp-ink) !important; font-weight: 700; font-size: 1.15rem; letter-spacing: -.01em; }
.site-description { color: var(--dsp-muted); font-size: 13px; }
.site-logo img { max-height: 40px; width: auto; }
.main-navigation, .main-navigation ul ul { background: transparent; }
.main-navigation .main-nav ul li a { color: var(--dsp-ink2); font-weight: 500; font-size: 15px; padding-left: 14px; padding-right: 14px; line-height: 56px; }
.main-navigation .main-nav ul li a:hover, .main-navigation .main-nav ul li.current-menu-item > a, .main-navigation .main-nav ul li.current-page-ancestor > a { color: var(--dsp-accent-ink); background: transparent; }
[data-theme="dark"] .main-navigation .main-nav ul li a:hover, [data-theme="dark"] .main-navigation .main-nav ul li.current-menu-item > a { color: var(--dsp-accent); }
.dsp-mi-search a, .dsp-mi-theme { display: flex !important; align-items: center; }
.dsp-mi-search a { width: 44px; justify-content: center; padding: 0 !important; }
.dsp-theme-toggle { background: var(--dsp-surface); border: 1px solid var(--dsp-line); color: var(--dsp-ink2); border-radius: 999px; width: 40px; height: 40px; display: grid; place-items: center; cursor: pointer; padding: 0; margin: 0 4px; transition: color .15s, border-color .15s, transform .2s var(--dsp-ease); }
.dsp-theme-toggle:hover { color: var(--dsp-accent); border-color: var(--dsp-accent); background: var(--dsp-surface); transform: rotate(-12deg); }
[data-theme="dark"] .i-sun, [data-theme="light"] .i-moon, :root:not([data-theme]) .i-moon { display: block; }
[data-theme="dark"] .i-moon, [data-theme="light"] .i-sun, :root:not([data-theme]) .i-sun { display: none; }
.menu-toggle { color: var(--dsp-ink); background: transparent; min-height: 48px; }
.main-navigation.toggled .main-nav ul li a { line-height: 48px; }
.main-navigation.toggled .main-nav > ul { background: var(--dsp-bg); border-top: 1px solid var(--dsp-line); }

/* ================= Buttons ================= */
.dsp-btn { display: inline-flex; align-items: center; gap: 8px; min-height: 48px; padding: 0 22px; border-radius: 999px; background: var(--dsp-accent); color: var(--dsp-on-accent) !important; font-weight: 600; text-decoration: none; border: 1px solid var(--dsp-accent); box-shadow: 0 8px 22px -12px var(--dsp-accent); transition: transform .2s var(--dsp-ease), box-shadow .2s, filter .2s; }
.dsp-btn:hover { transform: translateY(-1px); filter: brightness(1.06); box-shadow: 0 12px 26px -12px var(--dsp-accent); }
.dsp-btn.ghost { background: transparent; color: var(--dsp-ink) !important; border-color: var(--dsp-line); box-shadow: none; }
.dsp-btn.ghost:hover { border-color: var(--dsp-accent); color: var(--dsp-accent-ink) !important; }
[data-theme="dark"] .dsp-btn.ghost:hover { color: var(--dsp-accent) !important; }

/* ================= Homepage ================= */
.dsp-home .entry-header { display: none; }
.dsp-home .site-content, .page .site-content, .dsp-archive { max-width: 1200px; margin: 0 auto; }
.dsp-home .inside-article { padding-top: 0; }
html, body { overflow-x: clip; }
.page .inside-article { padding-left: 20px; padding-right: 20px; }
@media (max-width: 600px) { .page .inside-article { padding-left: 16px; padding-right: 16px; } }
.dsp-hero2 { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; padding: 56px 0 40px; isolation: isolate; }
.dsp-hero2::before { content: ""; position: absolute; inset: -40px -10vw auto; height: 520px; z-index: -1; background: radial-gradient(600px 300px at 15% 20%, var(--dsp-accent-soft), transparent 70%), radial-gradient(500px 280px at 85% 30%, rgba(56, 189, 248, .10), transparent 70%); }
.dsp-hero2 h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); line-height: 1.08; letter-spacing: -.03em; margin: 12px 0 16px; }
.dsp-hero-lead { font-size: 1.12rem; color: var(--dsp-ink2); max-width: 600px; margin-bottom: 22px; }
.dsp-hero-search { display: flex; align-items: center; gap: 10px; max-width: 560px; padding: 6px 6px 6px 16px; border: 1px solid var(--dsp-line); border-radius: 999px; background: var(--dsp-card); box-shadow: var(--dsp-shadow); color: var(--dsp-muted); }
.dsp-hero-search:focus-within { border-color: var(--dsp-accent); box-shadow: 0 0 0 4px var(--dsp-accent-soft), var(--dsp-shadow); }
.dsp-hero-search input { flex: 1; border: 0 !important; background: transparent !important; min-height: 44px; font-size: 16px; padding: 0 !important; outline: none; box-shadow: none !important; }
.dsp-hero-search button { min-height: 44px; padding: 0 20px; border: 0; border-radius: 999px; background: var(--dsp-ink); color: var(--dsp-bg); font-weight: 600; cursor: pointer; }
.dsp-hero-search button:hover { background: var(--dsp-accent); color: var(--dsp-on-accent); }
.dsp-hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 18px; }
.dsp-hero-stats { list-style: none; display: flex; gap: 28px; margin: 26px 0 0; padding: 0; color: var(--dsp-muted); font-size: 14px; }
.dsp-hero-stats b { display: block; font-family: var(--dsp-mono); font-size: 1.4rem; color: var(--dsp-ink); font-weight: 600; }
.dsp-scope { background: var(--dsp-scope-bg); border-radius: 18px; padding: 14px; box-shadow: var(--dsp-shadow-lg), inset 0 0 0 1px rgba(148, 163, 184, .16); transform: perspective(1200px) rotateY(-6deg) rotateX(2deg); transition: transform .5s var(--dsp-ease); }
.dsp-scope:hover { transform: perspective(1200px) rotateY(0) rotateX(0); }
.dsp-scope-bar { display: flex; align-items: center; gap: 6px; margin-bottom: 10px; font-family: var(--dsp-mono); font-size: 12px; color: #94a3b8; }
.dsp-scope-bar span { width: 10px; height: 10px; border-radius: 50%; background: #334155; }
.dsp-scope-bar span:first-child { background: #34d399; box-shadow: 0 0 10px #34d399; }
.dsp-scope-bar em { margin-left: auto; font-style: normal; }
.dsp-scope-cv { display: block; width: 100%; height: 300px; border-radius: 10px; background: radial-gradient(ellipse at center, rgba(52, 211, 153, .06), transparent 70%); }
.dsp-scope-foot { display: flex; justify-content: space-between; margin-top: 10px; font-family: var(--dsp-mono); font-size: 12px; color: #94a3b8; }
.dsp-scope-foot span:first-child { color: #34d399; }
@media (max-width: 960px) { .dsp-hero2 { grid-template-columns: 1fr; gap: 28px; padding-top: 28px; } .dsp-scope { transform: none; } .dsp-scope-cv { height: 220px; } }
@media (max-width: 480px) { .dsp-hero-search { padding-left: 12px; } .dsp-hero-search button { padding: 0 14px; } .dsp-hero-stats { gap: 18px; } }
.dsp-section-h { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; margin: 64px 0 18px; }
.dsp-section-h h2 { margin: 0; }
.dsp-home .entry-content > h2 { margin-top: 64px; }
.dsp-continue { margin: 8px 0 0; }
.dsp-continue-link { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2px 16px; padding: 16px 20px; border: 1px solid var(--dsp-line); border-left: 3px solid var(--dsp-accent); border-radius: var(--dsp-r); background: var(--dsp-card); color: var(--dsp-ink) !important; text-decoration: none; box-shadow: var(--dsp-shadow); }
.dsp-continue-link strong { grid-column: 1; font-size: 1.05rem; }
.dsp-continue-go { grid-row: 1 / span 2; grid-column: 2; font-size: 1.4rem; color: var(--dsp-accent); transition: transform .2s var(--dsp-ease); }
.dsp-continue-link:hover .dsp-continue-go { transform: translateX(4px); }

/* Path cards */
.dsp-paths { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: 18px; margin: 18px 0 8px; }
.dsp-path { position: relative; display: flex; flex-direction: column; gap: 8px; padding: 22px; border: 1px solid var(--dsp-line); border-radius: var(--dsp-r); text-decoration: none; color: var(--dsp-ink) !important; background: var(--dsp-card); box-shadow: var(--dsp-shadow); overflow: hidden; transition: transform .25s var(--dsp-ease), box-shadow .25s, border-color .25s; }
.dsp-path::after { content: ""; position: absolute; inset: 0 0 auto; height: 3px; background: var(--dsp-grad); opacity: 0; transition: opacity .25s; }
.dsp-path:hover { transform: translateY(-3px); box-shadow: var(--dsp-shadow-lg); border-color: color-mix(in srgb, var(--dsp-accent) 40%, var(--dsp-line)); }
.dsp-path:hover::after { opacity: 1; }
.dsp-path-top { display: flex; justify-content: space-between; align-items: center; }
.dsp-path-glyph { width: 64px; height: 40px; color: var(--dsp-accent); }
.dsp-path strong { font-size: 1.25rem; letter-spacing: -.01em; }
.dsp-path-blurb { color: var(--dsp-ink2); font-size: 15px; line-height: 1.55; }
.dsp-path em { display: flex; justify-content: space-between; font-style: normal; font-size: 13px; color: var(--dsp-muted); margin-top: auto; }
.dsp-path-go { color: var(--dsp-accent-ink); font-weight: 600; }
[data-theme="dark"] .dsp-path-go { color: var(--dsp-accent); }
.dsp-prog { display: block; height: 6px; border-radius: 99px; background: var(--dsp-grid); overflow: hidden; margin-top: 8px; }
.dsp-prog > span { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--dsp-grad); transition: width .6s var(--dsp-ease); }

/* Tool cards */
.dsp-tools { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr)); gap: 14px; margin: 18px 0; }
.dsp-tool { display: flex; flex-direction: column; gap: 6px; padding: 18px; border: 1px solid var(--dsp-line); border-radius: var(--dsp-r); text-decoration: none; color: var(--dsp-ink) !important; background: var(--dsp-card); transition: transform .25s var(--dsp-ease), border-color .25s, box-shadow .25s; }
.dsp-tool:hover { transform: translateY(-2px); border-color: var(--dsp-accent); box-shadow: var(--dsp-shadow); }
.dsp-tool-ico { width: 40px; height: 40px; padding: 8px; border-radius: 10px; background: var(--dsp-accent-soft); color: var(--dsp-accent-ink); margin-bottom: 4px; }
[data-theme="dark"] .dsp-tool-ico { color: var(--dsp-accent); }
.dsp-tool span { color: var(--dsp-muted); font-size: 14px; line-height: 1.5; }

/* Latest + trust */
.dsp-latest { list-style: none; margin: 12px 0; padding: 0; border: 1px solid var(--dsp-line); border-radius: var(--dsp-r); overflow: hidden; background: var(--dsp-card); }
.dsp-latest li { padding: 14px 18px; border-bottom: 1px solid var(--dsp-line); display: flex; flex-direction: column; gap: 2px; transition: background .15s; }
.dsp-latest li:last-child { border-bottom: 0; }
.dsp-latest li:hover { background: var(--dsp-surface); }
.dsp-latest li a { font-weight: 600; text-decoration: none; color: var(--dsp-ink); }
.dsp-latest li a:hover { color: var(--dsp-accent-ink); }
.dsp-latest li span { color: var(--dsp-muted); font-size: 14px; }
.dsp-trust { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 16px; }
.dsp-trust div { padding: 18px 20px; border-radius: var(--dsp-r); background: var(--dsp-surface); border: 1px solid var(--dsp-line); }
.dsp-trust strong { font-family: var(--dsp-mono); font-size: 14px; letter-spacing: .02em; color: var(--dsp-accent-ink); }
[data-theme="dark"] .dsp-trust strong { color: var(--dsp-accent); }
.dsp-trust p { margin: 6px 0 0; color: var(--dsp-ink2); font-size: 15px; }

/* Path pages */
.dsp-path-head { padding: 16px 18px; border: 1px solid var(--dsp-line); border-radius: var(--dsp-r); background: var(--dsp-surface); margin-bottom: 8px; }
.dsp-path-head .dsp-prog { margin-top: 0; }
.dsp-path-head .dsp-prog-txt { margin: 8px 0 0; font-size: 14px; color: var(--dsp-muted); font-family: var(--dsp-mono); }
.dsp-path-list { list-style: none; margin: 10px 0 28px; padding: 0; counter-reset: none; }
.dsp-path-list li { display: grid; grid-template-columns: 48px 1fr 28px; gap: 14px; align-items: start; border: 1px solid var(--dsp-line); border-radius: var(--dsp-r); padding: 14px 16px; margin-bottom: 10px; background: var(--dsp-card); transition: border-color .2s, transform .2s var(--dsp-ease); }
.dsp-path-list li:hover { border-color: var(--dsp-accent); transform: translateX(2px); }
.dsp-path-list li div { display: flex; flex-direction: column; }
.dsp-path-list li a { font-weight: 600; text-decoration: none; color: var(--dsp-ink); }
.dsp-path-list li a::after { content: ""; position: absolute; }
.dsp-path-list li span:not(.dsp-step):not(.dsp-check) { color: var(--dsp-muted); font-size: 14.5px; line-height: 1.5; }
.dsp-step { font-family: var(--dsp-mono); font-weight: 600; font-size: 14px; color: var(--dsp-accent-ink); background: var(--dsp-accent-soft); border-radius: 8px; height: 32px; display: grid; place-items: center; }
[data-theme="dark"] .dsp-step { color: var(--dsp-accent); }
.dsp-check { width: 24px; height: 24px; border-radius: 50%; border: 2px solid var(--dsp-line); margin-top: 4px; }
.is-done > .dsp-check { border-color: var(--dsp-accent); background: var(--dsp-accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7'/%3E%3C/svg%3E") center/14px no-repeat; }
.dsp-path-list li.is-soon { opacity: .6; border-style: dashed; grid-template-columns: 48px 1fr; }
.dsp-path-list li.is-soon:hover { transform: none; border-color: var(--dsp-line); }

/* ================= Documentation layout ================= */
.dsp-doc .site-content { max-width: 1440px; padding: 0 20px; }
.dsp-doc #primary { width: 100%; }
.dsp-doc .site-main { display: grid; grid-template-columns: 264px minmax(0, 760px) 220px; justify-content: center; gap: 0 48px; margin: 0; align-items: start; }
.dsp-doc .site-main > article { grid-column: 2; min-width: 0; padding-top: 32px; }
.dsp-nav { grid-column: 1; grid-row: 1 / span 5; position: sticky; top: 74px; max-height: calc(100vh - 88px); overflow: auto; padding: 26px 10px 26px 0; border-right: 1px solid var(--dsp-line); font-size: 14.5px; scrollbar-width: thin; }
.admin-bar .dsp-nav, .admin-bar .dsp-toc { top: 106px; }
.dsp-toc { grid-column: 3; grid-row: 1 / span 5; position: sticky; top: 74px; max-height: calc(100vh - 88px); overflow: auto; padding: 32px 0; font-size: 13.5px; }
.dsp-nav-toggle { display: none; }
.dsp-nav-path { margin-bottom: 6px; }
.dsp-nav-path summary { display: flex; align-items: center; gap: 6px; font-weight: 600; cursor: pointer; padding: 8px 6px; color: var(--dsp-ink); list-style: none; border-radius: 8px; }
.dsp-nav-path summary:hover { background: var(--dsp-surface); }
.dsp-nav-path summary::-webkit-details-marker { display: none; }
.dsp-nav-path summary::before { content: ""; width: 7px; height: 7px; border-right: 2px solid var(--dsp-muted); border-bottom: 2px solid var(--dsp-muted); transform: rotate(-45deg); transition: transform .2s var(--dsp-ease); margin: 0 6px 0 2px; }
.dsp-nav-path[open] summary::before { transform: rotate(45deg); }
.dsp-nav-count { margin-left: auto; font-family: var(--dsp-mono); font-size: 11px; color: var(--dsp-accent-ink); background: var(--dsp-accent-soft); border-radius: 99px; padding: 0 8px; }
.dsp-nav-count:empty { display: none; }
[data-theme="dark"] .dsp-nav-count { color: var(--dsp-accent); }
.dsp-nav-mod { margin: 12px 0 4px 22px; font-family: var(--dsp-mono); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--dsp-muted); }
.dsp-nav ul { list-style: none; margin: 0 0 4px 14px; padding: 0 0 0 8px; border-left: 1px solid var(--dsp-line); }
.dsp-nav li a { display: flex; align-items: center; gap: 10px; padding: 6px 10px; margin-left: -9px; border-left: 2px solid transparent; color: var(--dsp-ink2); text-decoration: none; border-radius: 0 8px 8px 0; line-height: 1.4; transition: background .15s, color .15s; }
.dsp-nav li a:hover { color: var(--dsp-ink); background: var(--dsp-surface); }
.dsp-nav li.is-current a { color: var(--dsp-accent-ink); border-left-color: var(--dsp-accent); background: var(--dsp-accent-soft); font-weight: 600; }
[data-theme="dark"] .dsp-nav li.is-current a { color: var(--dsp-accent); }
.dsp-dot { flex: none; width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid var(--dsp-muted); transition: background .2s, border-color .2s; }
.is-done > a .dsp-dot { background: var(--dsp-accent); border-color: var(--dsp-accent); }
.dsp-nav-all { display: inline-block; margin: 6px 0 0 22px; font-size: 13px; font-weight: 500; text-decoration: none; }
.dsp-toc-title { font-family: var(--dsp-mono); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--dsp-muted); margin: 0 0 10px; }
.dsp-toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--dsp-line); }
.dsp-toc li a { display: block; padding: 4px 12px; color: var(--dsp-muted); text-decoration: none; line-height: 1.45; margin-left: -1px; border-left: 2px solid transparent; transition: color .15s, border-color .15s; }
.dsp-toc li.lvl-h3 a { padding-left: 24px; font-size: 13px; }
.dsp-toc li a:hover { color: var(--dsp-ink); }
.dsp-toc li a.is-active { color: var(--dsp-accent-ink); border-left-color: var(--dsp-accent); font-weight: 500; }
[data-theme="dark"] .dsp-toc li a.is-active { color: var(--dsp-accent); }
.dsp-toc-mobile { display: none; border: 1px solid var(--dsp-line); border-radius: var(--dsp-r-sm); padding: 10px 16px; margin: 0 0 28px; background: var(--dsp-surface); }
.dsp-toc-mobile summary { font-weight: 600; cursor: pointer; min-height: 28px; }
.dsp-toc-mobile ul { margin: 8px 0 0 1.1em; }
.dsp-toc-mobile a { text-decoration: none; }
@media (max-width: 1240px) {
	.dsp-doc .site-main { grid-template-columns: 240px minmax(0, 1fr); gap: 0 36px; }
	.dsp-toc { display: none; }
	.dsp-toc-mobile { display: block; }
}
@media (max-width: 900px) {
	.dsp-doc .site-main { display: block; }
	.dsp-doc .site-content { padding: 0 16px; }
	.dsp-nav { position: static; max-height: none; border-right: 0; padding: 14px 0 0; }
	.dsp-nav-toggle { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 16px; border: 1px solid var(--dsp-line); border-radius: 999px; background: var(--dsp-surface); color: var(--dsp-ink); font-weight: 600; cursor: pointer; }
	.dsp-nav-toggle::before { content: ""; width: 14px; height: 10px; border-top: 2px solid currentColor; border-bottom: 2px solid currentColor; box-shadow: inset 0 4px 0 -2px var(--dsp-surface), inset 0 -4px 0 -2px var(--dsp-surface); background: linear-gradient(currentColor, currentColor) center/100% 2px no-repeat; }
	.dsp-nav-inner { display: none; margin-top: 10px; border: 1px solid var(--dsp-line); border-radius: var(--dsp-r); padding: 10px; background: var(--dsp-card); }
	.dsp-nav.is-open .dsp-nav-inner { display: block; }
	.dsp-nav li a { padding: 11px 10px; }
	.dsp-doc .site-main > article { padding-top: 18px; }
}

/* ================= Article chrome ================= */
.dsp-read { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 100; pointer-events: none; }
.dsp-read span { display: block; height: 100%; background: var(--dsp-grad); transform-origin: 0 50%; transform: scaleX(0); }
.admin-bar .dsp-read { top: 32px; }
.dsp-crumbs { font-size: 13.5px; color: var(--dsp-muted); margin-bottom: 10px; font-family: var(--dsp-mono); }
.dsp-crumbs a { color: var(--dsp-muted); text-decoration: none; }
.dsp-crumbs a:hover { color: var(--dsp-accent-ink); }
.dsp-crumbs span { margin: 0 6px; opacity: .5; }
.dsp-meta { color: var(--dsp-muted); font-size: 14.5px; margin: 10px 0 28px; padding-bottom: 20px; border-bottom: 1px solid var(--dsp-line); }
.dsp-meta a { color: var(--dsp-ink2); text-decoration: none; font-weight: 500; }
.entry-header .entry-title { margin-bottom: 0; }
.single-post .entry-header .entry-meta { display: none; }
.single .featured-image, .single .post-image { display: none; }
.entry-content h2, .entry-content h3 { position: relative; scroll-margin-top: 90px; }
.dsp-anchor { margin-left: 8px; font-family: var(--dsp-mono); font-weight: 500; color: var(--dsp-muted) !important; text-decoration: none; opacity: 0; transition: opacity .15s; }
h2:hover .dsp-anchor, h3:hover .dsp-anchor, .dsp-anchor:focus-visible { opacity: 1; }
.dsp-anchor.is-copied { color: var(--dsp-accent) !important; opacity: 1; }
.dsp-done { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin: 48px 0 0; padding: 18px 20px; border: 1px solid var(--dsp-line); border-radius: var(--dsp-r); background: var(--dsp-surface); }
.dsp-done div { display: flex; flex-direction: column; }
.dsp-done div span { color: var(--dsp-muted); font-size: 14px; }
.dsp-done-btn { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 18px; border-radius: 999px; border: 1px solid var(--dsp-accent); background: transparent; color: var(--dsp-accent-ink); font-weight: 600; cursor: pointer; transition: background .2s, color .2s, transform .15s; }
[data-theme="dark"] .dsp-done-btn { color: var(--dsp-accent); }
.dsp-done-btn:active { transform: scale(.97); }
.dsp-done.is-done { border-color: color-mix(in srgb, var(--dsp-accent) 45%, var(--dsp-line)); }
.dsp-done.is-done .dsp-done-btn { background: var(--dsp-accent); color: var(--dsp-on-accent); }
.dsp-pn { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 20px 0 24px; }
.dsp-pn a { display: flex; flex-direction: column; gap: 4px; border: 1px solid var(--dsp-line); border-radius: var(--dsp-r); padding: 16px 18px; text-decoration: none; color: var(--dsp-ink) !important; font-weight: 600; background: var(--dsp-card); transition: border-color .2s, transform .2s var(--dsp-ease), box-shadow .2s; }
.dsp-pn a span { font-family: var(--dsp-mono); font-size: 12px; color: var(--dsp-muted); font-weight: 500; text-transform: uppercase; letter-spacing: .06em; }
.dsp-pn a:hover { border-color: var(--dsp-accent); box-shadow: var(--dsp-shadow); transform: translateY(-2px); }
.dsp-pn-next { text-align: right; grid-column: 2; }
@media (max-width: 600px) { .dsp-pn { grid-template-columns: 1fr; } .dsp-pn-next { grid-column: 1; } }
.dsp-correct { font-size: 14.5px; color: var(--dsp-muted); padding-top: 16px; }
.dsp-author { display: flex; gap: 16px; align-items: flex-start; border: 1px solid var(--dsp-line); border-radius: var(--dsp-r); padding: 18px; margin: 20px 0; background: var(--dsp-card); }
.dsp-author img { border-radius: 50%; }
.dsp-author p { margin: 4px 0 0; font-size: 15px; color: var(--dsp-ink2); }
.dsp-top { position: fixed; right: 20px; bottom: 20px; width: 48px; height: 48px; border-radius: 50%; border: 1px solid var(--dsp-line); background: var(--dsp-card); color: var(--dsp-ink); box-shadow: var(--dsp-shadow); display: grid; place-items: center; cursor: pointer; opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity .25s, transform .25s var(--dsp-ease); z-index: 70; }
.dsp-top.is-shown { opacity: 1; transform: none; pointer-events: auto; }
.dsp-top:hover { color: var(--dsp-accent); border-color: var(--dsp-accent); }

/* ================= Lesson blocks ================= */
.dsp-intro { border: 1px solid var(--dsp-line); border-radius: var(--dsp-r); background: var(--dsp-surface); padding: 18px 20px; margin: 0 0 32px; font-size: 15.5px; position: relative; overflow: hidden; }
.dsp-intro::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; background: var(--dsp-grad); }
.dsp-intro p { margin: 6px 0; }
.dsp-intro ul { margin: 4px 0 4px 1.2em; }
.dsp-intro-meta { display: flex; gap: 10px; flex-wrap: wrap; }
.dsp-intro-meta span { font-family: var(--dsp-mono); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--dsp-muted); background: var(--dsp-card); border: 1px solid var(--dsp-line); border-radius: 99px; padding: 2px 10px; }
.dsp-intro-meta b { color: var(--dsp-ink); font-weight: 600; }
.dsp-callout { border-radius: var(--dsp-r-sm); padding: 14px 18px; margin: 24px 0; border: 1px solid var(--dsp-line); background: var(--dsp-surface); }
.dsp-callout-mistake { border-left: 3px solid var(--dsp-no); }
.dsp-callout-tip { border-left: 3px solid var(--dsp-ok); }
.dsp-callout-note { border-left: 3px solid var(--dsp-cyan); }
.dsp-callout-t { font-weight: 700; margin: 0 0 4px; }
.dsp-callout p:last-child { margin-bottom: 0; }
.dsp-math-d { overflow-x: auto; overflow-y: hidden; margin: 18px 0; padding: 6px 0; }
.katex { font-size: 1.08em; color: var(--dsp-ink); }
.katex-display { overflow-x: auto; overflow-y: hidden; padding: 4px 0; }

/* Code */
.entry-content pre, .dspt pre { background: var(--dsp-code-bg); color: var(--dsp-code-ink); border: 1px solid var(--dsp-line); border-radius: 0 0 var(--dsp-r-sm) var(--dsp-r-sm); padding: 16px 18px; font-family: var(--dsp-mono); font-size: 13.5px; line-height: 1.65; overflow-x: auto; margin: 0; tab-size: 4; }
.entry-content code { font-family: var(--dsp-mono); font-size: .86em; background: var(--dsp-surface); border: 1px solid var(--dsp-line); padding: 1px 6px; border-radius: 6px; color: var(--dsp-ink); }
.entry-content pre code { background: transparent; border: 0; padding: 0; font-size: inherit; }
.dsp-code { margin: 22px 0; box-shadow: var(--dsp-shadow); border-radius: var(--dsp-r-sm); }
.dsp-code-bar { display: flex; justify-content: space-between; align-items: center; background: var(--dsp-surface); border: 1px solid var(--dsp-line); border-bottom: 0; border-radius: var(--dsp-r-sm) var(--dsp-r-sm) 0 0; padding: 6px 8px 6px 14px; font-family: var(--dsp-mono); font-size: 12px; color: var(--dsp-muted); }
.dsp-code-bar > span { display: flex; align-items: center; gap: 6px; }
.dsp-code-bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--dsp-line); }
.dsp-code-bar i:nth-child(3) { margin-right: 8px; }
.dsp-code-bar button { display: inline-flex; align-items: center; gap: 6px; min-height: 32px; padding: 0 12px; border: 1px solid var(--dsp-line); border-radius: 8px; background: var(--dsp-card); color: var(--dsp-ink2); font-family: var(--dsp-font); font-size: 13px; cursor: pointer; transition: color .15s, border-color .15s; }
.dsp-code-bar button:hover, .dsp-code-bar button.is-ok { color: var(--dsp-accent-ink); border-color: var(--dsp-accent); }
[data-theme="dark"] .dsp-code-bar button:hover, [data-theme="dark"] .dsp-code-bar button.is-ok { color: var(--dsp-accent); }
.dsp-output { margin: -6px 0 24px; }
.dsp-output-label { display: inline-block; font-family: var(--dsp-mono); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--dsp-accent-ink); margin: 0 0 6px; }
[data-theme="dark"] .dsp-output-label { color: var(--dsp-accent); }
.dsp-output pre { border-radius: var(--dsp-r-sm); border-style: dashed; background: var(--dsp-bg2); }
.hljs-comment, .hljs-quote { color: var(--dsp-muted); font-style: italic; }
.hljs-keyword, .hljs-selector-tag, .hljs-built_in, .hljs-type { color: #cf222e; }
.hljs-string, .hljs-attr, .hljs-template-variable { color: #0a3069; }
.hljs-number, .hljs-literal { color: #0550ae; }
.hljs-title, .hljs-title.function_, .hljs-section { color: #8250df; }
.hljs-meta { color: #953800; }
[data-theme="dark"] .hljs-keyword, [data-theme="dark"] .hljs-selector-tag, [data-theme="dark"] .hljs-built_in, [data-theme="dark"] .hljs-type { color: #ff7b72; }
[data-theme="dark"] .hljs-string, [data-theme="dark"] .hljs-attr { color: #a5d6ff; }
[data-theme="dark"] .hljs-number, [data-theme="dark"] .hljs-literal { color: #79c0ff; }
[data-theme="dark"] .hljs-title, [data-theme="dark"] .hljs-title.function_, [data-theme="dark"] .hljs-section { color: #d2a8ff; }
[data-theme="dark"] .hljs-meta { color: #ffa657; }

/* Quiz */
.dsp-quiz { margin: 18px 0; display: grid; gap: 14px; }
.dsp-q { border: 1px solid var(--dsp-line); border-radius: var(--dsp-r); padding: 16px 20px; margin: 0; background: var(--dsp-card); transition: border-color .2s; }
.dsp-q.is-ok { border-color: var(--dsp-ok); }
.dsp-q.is-no { border-color: var(--dsp-no); }
.dsp-q legend { font-weight: 600; padding: 0 6px; }
.dsp-q label { display: flex; gap: 12px; align-items: center; padding: 10px 12px; margin: 4px 0; border: 1px solid var(--dsp-line); border-radius: var(--dsp-r-sm); cursor: pointer; transition: border-color .15s, background .15s; }
.dsp-q label:hover { border-color: var(--dsp-accent); }
.dsp-q label:has(input:checked) { border-color: var(--dsp-accent); background: var(--dsp-accent-soft); }
.dsp-q input { accent-color: var(--dsp-accent); width: 18px; height: 18px; margin: 0; }
.dsp-q-check { min-height: 44px; padding: 0 18px; margin-top: 10px; border: 0; border-radius: 999px; background: var(--dsp-ink); color: var(--dsp-bg); font-weight: 600; cursor: pointer; }
.dsp-q-check:hover { background: var(--dsp-accent); color: var(--dsp-on-accent); }
.dsp-q-fb { font-weight: 600; margin: 10px 0 0; }
.dsp-q-fb.is-ok { color: var(--dsp-ok); }
.dsp-q-fb.is-no { color: var(--dsp-no); }
.dsp-q-ex { color: var(--dsp-ink2); font-size: 15px; margin: 6px 0 0; }

/* ================= Search dialog ================= */
.dsp-search { width: min(640px, calc(100vw - 32px)); margin: 12vh auto auto; padding: 0; border: 1px solid var(--dsp-line); border-radius: 16px; background: var(--dsp-card); color: var(--dsp-ink); box-shadow: var(--dsp-shadow-lg); }
.dsp-search::backdrop { background: rgba(2, 6, 23, .55); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.dsp-search form { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--dsp-line); color: var(--dsp-muted); }
.dsp-search input { flex: 1; border: 0 !important; background: transparent !important; font-size: 17px; min-height: 44px; outline: none; padding: 0 !important; box-shadow: none !important; }
.dsp-search kbd, .dsp-kbd { font-family: var(--dsp-mono); font-size: 11px; border: 1px solid var(--dsp-line); border-bottom-width: 2px; border-radius: 6px; padding: 1px 6px; color: var(--dsp-muted); }
.dsp-search-quick { list-style: none; margin: 0; padding: 8px; max-height: 50vh; overflow: auto; }
.dsp-search-quick a { display: flex; justify-content: space-between; gap: 12px; padding: 10px 12px; border-radius: 10px; text-decoration: none; color: var(--dsp-ink) !important; }
.dsp-search-quick a:hover, .dsp-search-quick a:focus-visible { background: var(--dsp-surface); outline: none; }
.dsp-search-quick em { font-style: normal; font-family: var(--dsp-mono); font-size: 12px; color: var(--dsp-muted); }

/* ================= Pages, archives, forms ================= */
.dsp-archive { padding: 36px 16px 56px; }
.page:not(.dsp-home) .entry-header { padding-top: 32px; }
.page:not(.dsp-home) .entry-title { font-size: clamp(1.9rem, 3.6vw, 2.5rem); }
.dsp-pages { margin: 24px 0; display: flex; gap: 8px; flex-wrap: wrap; }
.dsp-pages .page-numbers { min-width: 44px; min-height: 44px; display: inline-grid; place-items: center; border: 1px solid var(--dsp-line); border-radius: 10px; text-decoration: none; }
.dsp-pages .current { background: var(--dsp-accent); color: var(--dsp-on-accent); border-color: var(--dsp-accent); }
input[type=text], input[type=number], input[type=email], input[type=search], input[type=url], textarea, select { background: var(--dsp-bg) !important; color: var(--dsp-ink) !important; border-color: var(--dsp-line) !important; border-radius: 10px; }
input[type=text]:focus, input[type=number]:focus, input[type=email]:focus, input[type=search]:focus, textarea:focus, select:focus { border-color: var(--dsp-accent) !important; outline: none; box-shadow: 0 0 0 3px var(--dsp-accent-soft); }
.dsp-form { max-width: 620px; margin: 8px 0 24px; padding: 22px; border: 1px solid var(--dsp-line); border-radius: var(--dsp-r); background: var(--dsp-card); box-shadow: var(--dsp-shadow); }
.dsp-form p { margin: 0 0 16px; }
.dsp-form label { display: block; font-weight: 600; font-size: 15px; margin-bottom: 6px; }
.dsp-form label span { font-weight: 400; color: var(--dsp-muted); }
.dsp-form input[type=text], .dsp-form input[type=email], .dsp-form input[type=url], .dsp-form select, .dsp-form textarea { width: 100%; min-height: 46px; padding: 10px 14px; font-size: 16px; }
.dsp-form-note { font-size: 14px; color: var(--dsp-muted); }
.dsp-hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.dsp-hero-search input[type=search], .dsp-search input[type=search] { background: transparent !important; border: 0 !important; box-shadow: none !important; }
.dspt { border-radius: var(--dsp-r) !important; box-shadow: var(--dsp-shadow); background: var(--dsp-card) !important; }
.dspt-btn { border-radius: 999px !important; }

/* ================= Footer ================= */
.dsp-footer { position: relative; border-top: 1px solid var(--dsp-line); background: var(--dsp-bg2); padding: 56px 20px 24px; margin-top: 72px; font-size: 15px; }
.dsp-fwave { position: absolute; top: -20px; left: 0; width: 100%; height: 40px; color: var(--dsp-accent); opacity: .35; }
.dsp-fwrap { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
.dsp-footer h3 { font-family: var(--dsp-mono); font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--dsp-muted); margin: 0 0 12px; }
.dsp-footer ul { list-style: none; margin: 0; padding: 0; }
.dsp-footer li { margin: 0 0 8px; }
.dsp-footer a { color: var(--dsp-ink2); text-decoration: none; }
.dsp-footer a:hover { color: var(--dsp-accent-ink); }
[data-theme="dark"] .dsp-footer a:hover { color: var(--dsp-accent); }
.dsp-flogo { font-weight: 700; font-size: 1.15rem; color: var(--dsp-ink) !important; }
.dsp-fabout p { color: var(--dsp-muted); max-width: 360px; }
.dsp-fcopy { max-width: 1200px; margin: 32px auto 0; padding-top: 20px; border-top: 1px solid var(--dsp-line); color: var(--dsp-muted); font-size: 13px; }
@media (max-width: 860px) { .dsp-fwrap { grid-template-columns: 1fr 1fr; } .dsp-fabout { grid-column: 1 / -1; } }
@media (max-width: 480px) { .dsp-fwrap { grid-template-columns: 1fr; } }

/* ================= Motion ================= */
.dsp-rv { opacity: 0; transform: translateY(10px); transition: opacity .4s var(--dsp-ease), transform .4s var(--dsp-ease); }
.dsp-rv.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
	*, *::before, *::after { transition: none !important; animation: none !important; }
	.dsp-rv { opacity: 1; transform: none; }
	.dsp-scope { transform: none; }
}
@media print { .site-header, .dsp-nav, .dsp-toc, .dsp-read, .dsp-top, .dsp-done, .dsp-pn, .dsp-footer { display: none !important; } .dsp-doc .site-main { display: block; } }