/* Ahazoo site shell: header, footer, marketing sections, forms, dashboard.
   Loaded on every page after style.css. */

:root {
  --c-coral-hi: #FFB4A2; --c-coral-base: #FF7A59; --c-coral-lo: #D9573A;
  --c-sun-hi: #FFE48A; --c-sun-base: #FFC93C; --c-sun-lo: #E0A512;
  --c-mint-hi: #A8F0D1; --c-mint-base: #3DD9A0; --c-mint-lo: #1FAF7C;
  --c-sky-hi: #A9D8FF; --c-sky-base: #4DA8FF; --c-sky-lo: #2A7FD6;
  --c-grape-hi: #D3B8FF; --c-grape-base: #9B6BFF; --c-grape-lo: #7444DB;
  --c-pink-hi: #FFD1E3; --c-pink-base: #FF8FB8; --c-pink-lo: #E0608F;
  --c-steel-hi: #DDE3EE; --c-steel-base: #9AA6BA; --c-steel-lo: #5F6B80;
  --c-ink: #2B2D42;
  --ico-shadow: rgba(43, 45, 66, 0.22);
  --hero-a: #EEF0FF; --hero-b: #FFF4E8;
}
:root[data-theme="dark"] {
    --c-coral-hi: #FF9F88; --c-coral-base: #F26B4B; --c-coral-lo: #B8462C;
    --c-sun-hi: #FFD966; --c-sun-base: #F2B92B; --c-sun-lo: #B98A0E;
    --c-mint-hi: #7EE6BD; --c-mint-base: #2FC48D; --c-mint-lo: #178A61;
    --c-sky-hi: #8CC8FF; --c-sky-base: #3F95EE; --c-sky-lo: #2266B0;
    --c-grape-hi: #C2A3FF; --c-grape-base: #8A5CF0; --c-grape-lo: #5E36B5;
    --c-pink-hi: #FFB8D2; --c-pink-base: #F2789F; --c-pink-lo: #B84A72;
    --c-steel-hi: #B8C1D2; --c-steel-base: #7B879C; --c-steel-lo: #4A5468;
    --c-ink: #F1F2F8;
    --ico-shadow: rgba(0, 0, 0, 0.5);
    --hero-a: #171A2E; --hero-b: #221A2A;
  }

/* icon gradient stops (defs injected once per page by site.js) */
.ig-coral-hi { stop-color: var(--c-coral-hi); } .ig-coral-base { stop-color: var(--c-coral-base); } .ig-coral-lo { stop-color: var(--c-coral-lo); }
.ig-sun-hi { stop-color: var(--c-sun-hi); } .ig-sun-base { stop-color: var(--c-sun-base); } .ig-sun-lo { stop-color: var(--c-sun-lo); }
.ig-mint-hi { stop-color: var(--c-mint-hi); } .ig-mint-base { stop-color: var(--c-mint-base); } .ig-mint-lo { stop-color: var(--c-mint-lo); }
.ig-sky-hi { stop-color: var(--c-sky-hi); } .ig-sky-base { stop-color: var(--c-sky-base); } .ig-sky-lo { stop-color: var(--c-sky-lo); }
.ig-grape-hi { stop-color: var(--c-grape-hi); } .ig-grape-base { stop-color: var(--c-grape-base); } .ig-grape-lo { stop-color: var(--c-grape-lo); }
.ig-pink-hi { stop-color: var(--c-pink-hi); } .ig-pink-base { stop-color: var(--c-pink-base); } .ig-pink-lo { stop-color: var(--c-pink-lo); }
.ig-steel-hi { stop-color: var(--c-steel-hi); } .ig-steel-base { stop-color: var(--c-steel-base); } .ig-steel-lo { stop-color: var(--c-steel-lo); }
.ig-shadow { stop-color: var(--ico-shadow); } .ig-shadow-0 { stop-color: var(--ico-shadow); stop-opacity: 0; }
.i-coral { fill: url(#ig-coral); stroke: var(--c-coral-lo); }
.i-sun { fill: url(#ig-sun); stroke: var(--c-sun-lo); }
.i-mint { fill: url(#ig-mint); stroke: var(--c-mint-lo); }
.i-sky { fill: url(#ig-sky); stroke: var(--c-sky-lo); }
.i-grape { fill: url(#ig-grape); stroke: var(--c-grape-lo); }
.i-pink { fill: url(#ig-pink); stroke: var(--c-pink-lo); }
.i-steel { fill: url(#ig-steel); stroke: var(--c-steel-lo); }
.ico [class^="i-"] { stroke-width: 2.5; stroke-linejoin: round; }
.ico .i-hl { fill: #fff; stroke: none; }
.ico .i-sh { fill: url(#ig-shadow); stroke: none; }
.ico .i-ink { fill: #2B2D42; stroke: none; }
.ico .i-white { fill: #fff; stroke: none; }
.ico .i-line { fill: none; stroke: #fff; stroke-width: 5; stroke-linecap: round; stroke-linejoin: round; }
.ico .i-line-ink { fill: none; stroke: #2B2D42; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.ico { display: inline-block; vertical-align: middle; overflow: visible; }

/* icon motion */
@keyframes ico-bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
@keyframes ico-spin { to { transform: rotate(360deg); } }
@keyframes ico-flicker { 0%, 100% { transform: scale(1, 1); } 50% { transform: scale(0.94, 1.08); } }
@keyframes ico-twinkle { 0%, 100% { transform: scale(1) rotate(0); } 50% { transform: scale(1.08) rotate(8deg); } }
@keyframes blink { 0%, 92%, 100% { transform: scaleY(1); } 95% { transform: scaleY(0.1); } }
@keyframes wave-arm { 0%, 100% { transform: rotate(0); } 50% { transform: rotate(-28deg); } }
.ico.bob { animation: ico-bob 3s ease-in-out infinite; }
.ico .spin { transform-box: fill-box; transform-origin: center; animation: ico-spin 6s linear infinite; }
.ico .flicker { transform-box: fill-box; transform-origin: 50% 100%; animation: ico-flicker 0.9s ease-in-out infinite; }
.ico .twinkle { transform-box: fill-box; transform-origin: center; animation: ico-twinkle 2.4s ease-in-out infinite; }
.ico .blink { transform-box: fill-box; transform-origin: center; animation: blink 4s infinite; }
.ico .wave { transform-box: fill-box; transform-origin: 10% 90%; animation: wave-arm 1.2s ease-in-out infinite; }
.hover-wobble .ico { transition: transform 0.35s cubic-bezier(.3, 1.6, .5, 1); }
.hover-wobble:hover .ico { transform: rotate(-8deg) scale(1.12); }
@media (prefers-reduced-motion: reduce) {
  .ico.bob, .ico .spin, .ico .flicker, .ico .twinkle, .ico .blink, .ico .wave { animation: none; }
}

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--surface) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.site-header .bar-in { display: flex; align-items: center; gap: 22px; height: 64px; }
.site-nav { display: flex; gap: 6px; margin-left: 12px; }
.site-nav a { padding: 8px 12px; border-radius: 10px; color: var(--muted); text-decoration: none; font-weight: 600; font-size: 15px; }
.site-nav a:hover { background: var(--surface-2); color: var(--text); }
.site-nav a.active { color: var(--accent); background: var(--accent-bg); }
.site-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.site-actions .btn { height: 40px; text-decoration: none; }
.user-chip { display: flex; align-items: center; gap: 8px; padding: 4px 12px 4px 4px; border-radius: 99px; border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); text-decoration: none; font-weight: 600; font-size: 14px; }
.avatar { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; color: #fff; background: linear-gradient(135deg, var(--c-grape-hi), var(--c-grape-lo)); }
.plan-tag { font-size: 11px; font-weight: 800; padding: 2px 8px; border-radius: 99px; background: var(--c-sun-base); color: #5a3d00; }
/* profile button and its drop-down menu (signed in) */
.profile { position: relative; }
.profile-btn { display: flex; align-items: center; gap: 8px; height: 42px; padding: 4px 10px 4px 4px; border-radius: 99px; border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); font: 600 14px var(--font); cursor: pointer; }
.profile-btn:hover, .profile-btn[aria-expanded="true"] { border-color: var(--accent); background: var(--accent-bg); }
.profile-btn .caret { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; transition: transform 0.2s; }
.profile-btn[aria-expanded="true"] .caret { transform: rotate(180deg); }
.profile-menu { position: absolute; right: 0; top: calc(100% + 10px); width: 270px; max-width: calc(100vw - 24px); padding: 8px; border-radius: 16px; background: var(--surface); border: 1px solid var(--border-strong); box-shadow: 0 22px 50px -20px rgba(30, 20, 90, 0.45); z-index: 60; transform-origin: top right; }
.profile-menu[hidden] { display: none; }
.pm-head { display: flex; gap: 12px; align-items: center; padding: 8px 8px 12px; border-bottom: 1px solid var(--border); margin-bottom: 6px; }
.pm-head > div { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.pm-head b { font-size: 15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pm-head small { color: var(--muted); font-size: 12.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pm-head .plan-tag { align-self: flex-start; margin-top: 4px; }
.plan-tag.free { background: var(--surface-2); color: var(--muted); }
.avatar.lg { width: 44px; height: 44px; flex: 0 0 44px; font-size: 16px; }
.profile-menu [role="menuitem"] { display: flex; align-items: center; gap: 12px; width: 100%; padding: 10px; border: 0; border-radius: 10px; background: none; color: var(--text); font: 600 14.5px var(--font); text-decoration: none; text-align: left; cursor: pointer; }
.profile-menu [role="menuitem"]:hover, .profile-menu [role="menuitem"]:focus-visible { background: var(--surface-2); outline: none; }
.profile-menu [role="menuitem"] svg { width: 19px; height: 19px; flex: 0 0 19px; fill: none; stroke: var(--muted); stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.pm-sep { height: 1px; background: var(--border); margin: 6px 4px; }
.pm-label { padding: 4px 10px 2px; font-size: 11.5px; font-weight: 800; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.profile-menu .pm-out, .profile-menu .pm-out svg { color: var(--bad); stroke: var(--bad); }
/* settings page */
.settings { max-width: 760px; }
.settings h1 { margin-bottom: 4px; }
.settings > .sub { color: var(--muted); margin: 0 0 24px; }
.set-sec { margin-bottom: 18px; }
.set-sec h2 { margin: 0 0 16px; font-size: 20px; }
.set-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
.set-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 0; border-top: 1px solid var(--border); flex-wrap: wrap; }
.set-sec h2 + .set-row { border-top: 0; padding-top: 0; }
.set-row > div:first-child { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.set-row small { color: var(--muted); font-size: 14px; overflow-wrap: anywhere; }
.set-select { height: 42px; border-radius: 12px; border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); padding: 0 12px; font: 15px var(--font); }
.seg { display: inline-flex; padding: 4px; border-radius: 12px; background: var(--surface-2); gap: 4px; }
.seg button { border: 0; background: none; padding: 8px 16px; border-radius: 9px; font: 600 14px var(--font); color: var(--muted); cursor: pointer; }
.seg button[aria-checked="true"] { background: var(--surface); color: var(--accent); box-shadow: 0 2px 8px -4px rgba(30, 20, 90, 0.4); }
.btn.danger { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, transparent); }
@media (max-width: 560px) { .set-2 { grid-template-columns: 1fr; } }
.menu-btn { display: none; }
@media (max-width: 860px) {
  .site-nav { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; background: var(--surface); padding: 10px 16px 16px; border-bottom: 1px solid var(--border); margin: 0; }
  .site-nav.open { display: flex; }
  .menu-btn { display: inline-flex; }
  .site-actions .hide-sm { display: none; }
}

/* ---------- footer ---------- */
.site-footer { margin-top: 80px; padding: 48px 0 32px; background: var(--surface); border-top: 1px solid var(--border); }
.foot-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 28px; }
.foot-grid h4 { margin: 0 0 10px; font-size: 14px; }
.foot-grid a { display: block; color: var(--muted); text-decoration: none; padding: 3px 0; font-size: 14px; }
.foot-grid a:hover { color: var(--accent); }
.foot-note { color: var(--muted); font-size: 14px; max-width: 34ch; }
.foot-base { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--border); color: var(--faint); font-size: 13px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr 1fr; } }

/* ---------- shared building blocks ---------- */
.page { padding-top: 8px; }
.section { padding: 56px 0 8px; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 28px; }
.section-head h2 { font-size: clamp(26px, 3.2vw, 38px); letter-spacing: -0.02em; margin: 0 0 8px; line-height: 1.15; }
.section-head p { color: var(--muted); margin: 0; font-size: 17px; }
.eyebrow { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; color: var(--accent); background: var(--accent-bg); padding: 4px 12px; border-radius: 99px; margin-bottom: 12px; }
.btn.lg { height: 52px; padding: 0 24px; font-size: 17px; border-radius: 14px; }
.btn.ghost { background: transparent; }
.btn.sun { background: var(--c-sun-base); border-color: var(--c-sun-lo); color: #4a3200; }
.btn.block { width: 100%; }
a.btn { text-decoration: none; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 22px; transition: transform 0.3s cubic-bezier(.2, .8, .2, 1), border-color 0.2s, box-shadow 0.3s; }
.tile.lift:hover { transform: translateY(-6px); border-color: var(--accent-border); box-shadow: 0 18px 40px -22px rgba(80, 72, 229, 0.45); }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 18px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip-f { border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); border-radius: 99px; padding: 8px 14px; font: 600 14px var(--font); cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.chip-f[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.soon-tag { font-size: 11px; font-weight: 800; padding: 3px 9px; border-radius: 99px; background: var(--surface-2); color: var(--muted); border: 1px solid var(--border-strong); }
.live-tag { font-size: 11px; font-weight: 800; padding: 3px 9px; border-radius: 99px; background: var(--ok-bg); color: var(--ok); }
.progress { height: 10px; border-radius: 99px; background: var(--surface-2); overflow: hidden; border: 1px solid var(--border); }
.progress > i { display: block; height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--c-mint-base), var(--c-sky-base)); width: 0; transition: width 0.9s cubic-bezier(.2, .8, .2, 1); }
.reveal { opacity: 0; transform: translateY(26px); }
.reveal.in { opacity: 1; transform: none; transition: opacity 0.7s ease, transform 0.7s cubic-bezier(.2, .8, .2, 1); }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }
.notice { border-radius: 14px; padding: 12px 16px; background: var(--c-sun-hi); color: #4a3200; font-size: 14px; border: 1px solid var(--c-sun-lo); }
:root[data-theme="dark"] .notice { background: #3a2f10; color: #ffe6a0; }

/* ---------- home ---------- */
.hero2 { position: relative; overflow: hidden; border-radius: 32px; margin-top: 18px; padding: 56px 48px; background: radial-gradient(120% 120% at 0% 0%, var(--hero-a), transparent 60%), radial-gradient(120% 120% at 100% 100%, var(--hero-b), transparent 60%), var(--surface); border: 1px solid var(--border); display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 32px; align-items: center; }
.hero2 h1 { font-size: clamp(36px, 5vw, 64px); line-height: 1.04; letter-spacing: -0.035em; margin: 0 0 18px; }
.hero2 h1 .hl { background: linear-gradient(90deg, var(--c-grape-base), var(--c-coral-base)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero2 p.lead { font-size: 19px; color: var(--muted); max-width: 40ch; margin: 0 0 26px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.hero-note { margin-top: 14px; font-size: 14px; color: var(--muted); }
.hero-art { position: relative; height: 420px; perspective: 900px; }
.hero-art .stage3d { position: absolute; inset: 0; transform-style: preserve-3d; }
.hero-art .mascot { position: absolute; left: 50%; top: 50%; width: 230px; transform: translate(-50%, -46%); }
.hero-art .orbit { position: absolute; width: 92px; height: 92px; display: grid; place-items: center; border-radius: 26px; background: var(--surface); border: 1px solid var(--border); box-shadow: 0 16px 34px -18px rgba(43, 45, 66, 0.45); }
.hero-art .orbit span { position: absolute; bottom: -24px; font-size: 13px; font-weight: 700; color: var(--muted); white-space: nowrap; }
@media (max-width: 900px) { .hero2 { grid-template-columns: minmax(0, 1fr); padding: 36px 22px; } .hero-art { height: 330px; } .hero-art .mascot { width: 170px; } .hero-art .orbit { width: 70px; height: 70px; border-radius: 20px; } }
.subject-card { display: flex; flex-direction: column; gap: 10px; text-decoration: none; color: var(--text); position: relative; overflow: hidden; }
.subject-card h3 { margin: 6px 0 0; font-size: 20px; }
.subject-card p { margin: 0; color: var(--muted); font-size: 15px; }
.subject-card .tagrow { display: flex; gap: 8px; align-items: center; margin-top: auto; padding-top: 8px; }
.subject-card::after { content: ""; position: absolute; right: -40px; top: -40px; width: 140px; height: 140px; border-radius: 50%; background: var(--glow, var(--accent-bg)); opacity: 0.55; z-index: -1; }
.steps3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; counter-reset: s; }
.steps3 .tile { position: relative; padding-top: 30px; }
.steps3 .tile::before { counter-increment: s; content: counter(s); position: absolute; top: -14px; left: 22px; width: 32px; height: 32px; border-radius: 10px; background: var(--accent); color: #fff; display: grid; place-items: center; font-weight: 800; }
.steps3 h3 { margin: 10px 0 6px; font-size: 19px; }
.steps3 p { margin: 0; color: var(--muted); }
@media (max-width: 860px) { .steps3 { grid-template-columns: minmax(0, 1fr); } }
.feature h3 { margin: 10px 0 6px; font-size: 18px; }
.feature p { margin: 0; color: var(--muted); font-size: 15px; }
.levels { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.level-card { text-align: center; padding: 22px 14px; }
.level-card b { display: block; font-size: 22px; margin: 8px 0 4px; }
.level-card small { color: var(--muted); }
@media (max-width: 760px) { .levels { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.faq details { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 4px 18px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 700; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; gap: 10px; }
.faq summary::after { content: "+"; font-size: 22px; line-height: 1; color: var(--accent); transition: transform 0.25s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0 0 14px; color: var(--muted); }
.cta-band { margin-top: 56px; border-radius: 28px; padding: 40px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; color: #fff; background: linear-gradient(120deg, var(--c-grape-lo), var(--c-grape-base) 50%, var(--c-coral-base)); }
.cta-band h2 { margin: 0 0 6px; font-size: clamp(24px, 3vw, 34px); }
.cta-band p { margin: 0; opacity: 0.9; }
.cta-band .btn { background: #fff; color: var(--c-grape-lo); border-color: #fff; }

/* ---------- courses ---------- */
.page-hero { padding: 36px 0 18px; display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.page-hero h1 { margin: 0 0 6px; font-size: clamp(30px, 4vw, 44px); letter-spacing: -0.03em; }
.page-hero p { margin: 0; color: var(--muted); font-size: 17px; }
.filters { display: flex; flex-direction: column; gap: 12px; padding: 16px; border-radius: 18px; background: var(--surface); border: 1px solid var(--border); margin-bottom: 22px; }
.filters .row2 { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.filters label.l { font-size: 13px; font-weight: 700; color: var(--muted); min-width: 64px; }
.search { flex: 1; min-width: 200px; height: 44px; border-radius: 12px; border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--text); padding: 0 14px; font: 15px var(--font); }
.search:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.course-card { display: flex; flex-direction: column; gap: 10px; text-decoration: none; color: var(--text); min-height: 240px; }
.course-card .top { display: flex; align-items: center; gap: 12px; }
.course-card h3 { margin: 0; font-size: 19px; line-height: 1.25; }
.course-card p { margin: 0; color: var(--muted); font-size: 14.5px; }
.course-card .meta2 { display: flex; gap: 10px; flex-wrap: wrap; font-size: 13px; color: var(--muted); margin-top: auto; }
.course-card .meta2 b { color: var(--text); }
.course-card.soon { opacity: 0.85; border-style: dashed; }
.empty-msg { text-align: center; color: var(--muted); padding: 40px 0; }

/* course detail */
.course-banner { margin-top: 18px; border-radius: 28px; padding: 32px; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 24px; align-items: center; background: radial-gradient(100% 140% at 0% 0%, var(--hero-a), transparent 70%), var(--surface); border: 1px solid var(--border); }
.course-banner h1 { margin: 0 0 6px; font-size: clamp(26px, 3.4vw, 40px); letter-spacing: -0.02em; }
.course-banner p { margin: 0; color: var(--muted); }
.stats-row { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 12px; font-size: 14px; color: var(--muted); }
.stats-row b { color: var(--text); font-size: 18px; display: block; }
@media (max-width: 860px) { .course-banner { grid-template-columns: minmax(0, 1fr); } }
.topic-list { margin-top: 24px; display: flex; flex-direction: column; gap: 10px; }
.topic-row { display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 14px 16px; border-radius: 16px; background: var(--surface); border: 1px solid var(--border); color: var(--text); text-decoration: none; transition: transform 0.2s, border-color 0.2s; }
.topic-row:hover { transform: translateX(4px); border-color: var(--accent-border); }
.topic-row .n { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; font-weight: 800; background: var(--surface-2); color: var(--muted); }
.topic-row.done .n { background: var(--ok-bg); color: var(--ok); }
.topic-row h4 { margin: 0; font-size: 16px; }
.topic-row p { margin: 2px 0 0; font-size: 14px; color: var(--muted); }
.topic-row .st { font-size: 12px; font-weight: 800; padding: 4px 10px; border-radius: 99px; white-space: nowrap; }
.st.free { background: var(--ok-bg); color: var(--ok); }
.st.pro { background: var(--accent-bg); color: var(--accent); }
.st.lock { background: var(--surface-2); color: var(--muted); }
.st.done { background: var(--ok); color: #fff; }
.st.soon { background: var(--surface-2); color: var(--faint); }

/* ---------- pricing ---------- */
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 1080px; margin-inline: auto; gap: 16px; align-items: stretch; }
[data-tilt] { transition-property: border-color, box-shadow; }
.plan { display: flex; flex-direction: column; gap: 14px; position: relative; }
.plan h3 { margin: 0; font-size: 20px; }
.plan .price { font-size: 38px; font-weight: 800; letter-spacing: -0.02em; line-height: 1; }
.plan .price small { font-size: 15px; font-weight: 600; color: var(--muted); }
.plan .price s { font-size: 17px; color: var(--faint); font-weight: 600; margin-right: 6px; }
.plan ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; font-size: 14.5px; }
.plan li { display: flex; gap: 8px; align-items: flex-start; }
.plan li::before { content: ""; flex: none; width: 18px; height: 18px; margin-top: 2px; border-radius: 50%; background: var(--ok-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12l4 4 8-8' fill='none' stroke='%2310855a' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 14px no-repeat; }
.plan .btn { margin-top: auto; }
.plan.best { border: 2px solid var(--accent); box-shadow: 0 24px 50px -28px rgba(80, 72, 229, 0.55); }
.plan .ribbon { position: absolute; top: -13px; right: 18px; background: var(--accent); color: #fff; font-size: 12px; font-weight: 800; padding: 4px 12px; border-radius: 99px; }
@media (max-width: 860px) { .plans { grid-template-columns: minmax(0, 1fr); max-width: 460px; } }
@media (max-width: 560px) { .plans { grid-template-columns: minmax(0, 1fr); } }
.compare { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: 16px; overflow: hidden; border: 1px solid var(--border); font-size: 15px; }
.compare th, .compare td { padding: 12px 14px; border-bottom: 1px solid var(--border); text-align: center; }
.compare th:first-child, .compare td:first-child { text-align: left; }
.compare thead th { background: var(--surface-2); }
.yes { color: var(--ok); font-weight: 800; }
.no { color: var(--faint); }
.table-wrap { overflow-x: auto; }

/* ---------- auth ---------- */
.auth-wrap { min-height: calc(100vh - 64px); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.auth-side { position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 40px; background: radial-gradient(100% 100% at 20% 10%, var(--c-grape-hi), transparent 60%), radial-gradient(100% 100% at 90% 90%, var(--c-coral-hi), transparent 60%), var(--hero-a); text-align: center; }
.auth-side h2 { margin: 18px 0 6px; font-size: 28px; }
.auth-side p { margin: 0; color: var(--muted); max-width: 32ch; }
.auth-main { display: flex; align-items: center; justify-content: center; padding: 40px 20px; }
.auth-card { width: 100%; max-width: 430px; }
.auth-card h1 { margin: 0 0 6px; font-size: 30px; letter-spacing: -0.02em; }
.auth-card .sub { margin: 0 0 22px; color: var(--muted); }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label { font-size: 14px; font-weight: 700; }
.field input, .field select { height: 48px; border-radius: 12px; border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); padding: 0 14px; font: 16px var(--font); }
.field input:focus-visible, .field select:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.field .err { color: var(--bad); font-size: 13px; min-height: 0; }
.role-pick { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.role-pick label { border: 1.5px solid var(--border-strong); border-radius: 14px; padding: 12px; cursor: pointer; display: flex; gap: 10px; align-items: center; font-weight: 700; font-size: 14px; background: var(--surface); }
.role-pick input { accent-color: var(--accent); }
.role-pick label:has(input:checked) { border-color: var(--accent); background: var(--accent-bg); color: var(--accent); }
.divider { display: flex; align-items: center; gap: 12px; color: var(--faint); font-size: 13px; margin: 16px 0; }
.divider::before, .divider::after { content: ""; flex: 1; height: 1px; background: var(--border-strong); }
.google-btn { width: 100%; }
.form-err { color: var(--bad); font-size: 14px; margin: 0 0 12px; min-height: 0; }
.switch-auth { margin-top: 18px; text-align: center; color: var(--muted); font-size: 15px; }
@media (max-width: 860px) { .auth-wrap { grid-template-columns: minmax(0, 1fr); } .auth-side { padding: 28px 20px; } .auth-side .ico { width: 120px; } }

/* ---------- dashboard ---------- */
.dash-head { margin-top: 18px; border-radius: 28px; padding: 26px 30px; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 22px; align-items: center; background: radial-gradient(100% 140% at 0% 0%, var(--hero-a), transparent 70%), radial-gradient(100% 140% at 100% 100%, var(--hero-b), transparent 70%), var(--surface); border: 1px solid var(--border); }
.dash-head h1 { margin: 0 0 4px; font-size: clamp(24px, 3vw, 34px); letter-spacing: -0.02em; }
.dash-head p { margin: 0; color: var(--muted); }
@media (max-width: 760px) { .dash-head { grid-template-columns: minmax(0, 1fr); text-align: center; justify-items: center; } }
.stat-cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-top: 18px; }
.stat { display: flex; align-items: center; gap: 14px; padding: 16px 18px; }
.stat b { display: block; font-size: 26px; line-height: 1.1; }
.stat small { color: var(--muted); font-size: 13px; }
@media (max-width: 860px) { .stat-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.dash-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 18px; margin-top: 18px; }
@media (max-width: 960px) { .dash-grid { grid-template-columns: minmax(0, 1fr); } }
.dash-grid h2 { margin: 0 0 14px; font-size: 19px; display: flex; align-items: center; gap: 8px; }
.continue { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 18px; align-items: center; }
.continue h3 { margin: 2px 0 4px; font-size: 20px; }
.continue p { margin: 0; color: var(--muted); font-size: 14px; }
.mycourse { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--border); text-decoration: none; color: var(--text); }
.mycourse:last-child { border-bottom: 0; }
.mycourse h4 { margin: 0 0 6px; font-size: 15.5px; }
.mycourse small { color: var(--muted); font-size: 13px; }
.badges { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.badge-it { text-align: center; padding: 12px 6px; border-radius: 16px; background: var(--surface-2); }
.badge-it b { display: block; font-size: 13px; margin-top: 6px; }
.badge-it small { color: var(--muted); font-size: 11.5px; }
.badge-it.locked .ico { filter: grayscale(1); opacity: 0.4; }
.upsell { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 16px; align-items: center; color: #fff; border: 0; background: linear-gradient(120deg, var(--c-grape-lo), var(--c-grape-base) 55%, var(--c-coral-base)); }
.upsell h3 { margin: 0 0 4px; font-size: 19px; }
.upsell p { margin: 0; opacity: 0.92; font-size: 14.5px; }
.upsell .btn { background: #fff; color: var(--c-grape-lo); border-color: #fff; }
@media (max-width: 760px) { .upsell, .continue { grid-template-columns: minmax(0, 1fr); } }
.cert { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.cert:last-child { border-bottom: 0; }
.cert small { color: var(--muted); display: block; }
.demo-bar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 22px; font-size: 13px; color: var(--muted); }
.demo-bar .btn { height: 34px; font-size: 13px; }
.hot { display: inline-block; vertical-align: middle; font-size: 10.5px; font-weight: 700; padding: 1px 7px; border-radius: 99px; background: var(--bad-bg); color: var(--bad); margin-left: 4px; }
.modal-back { position: fixed; inset: 0; z-index: 100; background: rgba(15, 17, 30, 0.55); display: grid; place-items: center; padding: 20px; }
.modal { width: 100%; max-width: 460px; background: var(--surface); border-radius: 24px; padding: 28px; text-align: center; border: 1px solid var(--border); }
.modal h2 { margin: 12px 0 6px; font-size: 24px; }
.modal p { margin: 0 0 18px; color: var(--muted); }
.modal .acts { display: flex; flex-direction: column; gap: 10px; }

/* page width (also defined in scene.css for the lesson page) */
.wide { width: 90vw; max-width: 1500px; margin: 0 auto; }
.lesson-main.wide { max-width: none; } /* lessons use 90% of any screen; the player scales up inside */
@media (max-width: 1200px) { .wide { width: auto; padding: 0 20px; } }
@media (max-width: 520px) { .wide { padding: 0 14px; } }

[hidden] { display: none !important; }

.form-ok { color: var(--ok); font-size: 14px; margin: 0 0 12px; }
.form-ok:empty, .form-err:empty { display: none; }

/* ================= Ahazoo brand ================= */
.brand { gap: 8px; }
.brand .logo { display: none; }
.az-lockup { display: inline-flex; align-items: center; gap: 8px; }
.wm { font-family: 'Baloo 2', 'Inter', sans-serif; font-weight: 800; font-size: 25px; letter-spacing: -0.01em; color: var(--text); line-height: 1; padding-top: 3px; }
.wm span { color: var(--c-grape-lo); }
:root[data-theme="dark"] .wm span { color: var(--c-grape-hi); }
.az-mark { overflow: visible; }
.az-mark [class^="i-"] { stroke-width: 2.5; stroke-linejoin: round; }
@keyframes az-earl { 0%, 82%, 100% { transform: rotate(0); } 88% { transform: rotate(-16deg); } 94% { transform: rotate(6deg); } }
@keyframes az-earr { 0%, 82%, 100% { transform: rotate(0); } 88% { transform: rotate(16deg); } 94% { transform: rotate(-6deg); } }
@keyframes az-spark { 0%, 100% { transform: scale(1) rotate(0); } 50% { transform: scale(0.72) rotate(40deg); } }
.az-anim .az-ear-l { transform-box: fill-box; transform-origin: 50% 100%; animation: az-earl 3.2s ease-in-out infinite; }
.az-anim .az-ear-r { transform-box: fill-box; transform-origin: 50% 100%; animation: az-earr 3.2s 0.12s ease-in-out infinite; }
.az-anim .az-spark { transform-box: fill-box; transform-origin: center; animation: az-spark 2.2s ease-in-out infinite; }
.az-anim .az-spark2 { transform-box: fill-box; transform-origin: center; animation: az-spark 2.2s 0.6s ease-in-out infinite; }
.brand:hover .az-mark { transform: rotate(-6deg) scale(1.06); transition: transform 0.3s cubic-bezier(.3, 1.6, .5, 1); }
@media (prefers-reduced-motion: reduce) { .az-anim * { animation: none !important; } }

/* AI labels: the sparkle is only used on AI features, always with a text label */
.ai-pill { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 700; padding: 5px 12px 5px 8px; border-radius: 99px; color: var(--c-grape-lo); background: linear-gradient(90deg, color-mix(in srgb, var(--c-grape-hi) 45%, transparent), color-mix(in srgb, var(--c-sky-hi) 45%, transparent)); border: 1px solid color-mix(in srgb, var(--c-grape-base) 35%, transparent); }
:root[data-theme="dark"] .ai-pill { color: var(--c-grape-hi); }
.ai-card { position: relative; overflow: hidden; }
.ai-card::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1.5px; background: linear-gradient(130deg, var(--c-grape-base), var(--c-sky-base), var(--c-pink-base)); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; }
.ai-card h3 { margin: 10px 0 6px; font-size: 18px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.ai-card p { margin: 0; color: var(--muted); font-size: 15px; }
.ai-pill { text-decoration: none; margin: 0 0 4px 10px; vertical-align: middle; }
.ai-pill:hover { filter: brightness(1.04); text-decoration: none; }
.ai-pill .ico { flex: none; }
.ai-pill.sm { font-size: 11px; padding: 2px 9px 2px 5px; margin: 0; }
@media (max-width: 560px) { .hero2 .ai-pill { margin: 8px 0 0; } }

/* currency switch */
.cur-row { display: flex; justify-content: center; margin: -6px 0 26px; }
.cur-pick { display: inline-flex; padding: 4px; gap: 4px; border-radius: 99px; background: var(--surface); border: 1px solid var(--border-strong); }
.cur-pick button { border: 0; background: transparent; color: var(--muted); font: 700 14px var(--font); padding: 7px 14px; border-radius: 99px; cursor: pointer; }
.cur-pick button:hover { color: var(--text); }
.cur-pick button[aria-pressed="true"] { background: var(--accent); color: #fff; }
.cur-pick button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.foot-cur { display: inline-flex; align-items: center; gap: 8px; }
.foot-cur select { font: 600 13px var(--font); color: var(--text); background: var(--surface); border: 1px solid var(--border-strong); border-radius: 8px; padding: 4px 8px; }

/* licence line under paid lessons (deters sharing recordings) */
.lic-mark { margin: 8px 4px 0; text-align: right; font-size: 12px; color: var(--faint); user-select: none; letter-spacing: 0.02em; }

/* Ask Bit (AI study buddy) under the lesson player: visible, locked until launch */
.ask-ai { margin-top: 22px; padding: 22px; display: flex; flex-direction: column; gap: 16px; }
.ask-head { display: flex; gap: 16px; align-items: center; }
.ask-bit { flex: none; }
.ask-head h2 { margin: 0 0 6px; font-size: 20px; line-height: 1.35; }
.ask-head h2 > .ico { vertical-align: -3px; margin-right: 4px; }
.ask-head h2 .ai-pill { margin-left: 6px; vertical-align: 3px; }
.ask-head p { margin: 0; color: var(--muted); font-size: 15px; max-width: 70ch; }
.ask-quick { display: flex; gap: 8px; flex-wrap: wrap; }
.ask-quick .chip-f:disabled { opacity: 0.6; cursor: not-allowed; }
.ask-row { display: flex; gap: 10px; }
.ask-row input { flex: 1; min-width: 0; font: 15px var(--font); padding: 12px 14px; border-radius: 12px; border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--muted); cursor: not-allowed; }
.ask-row .btn { display: inline-flex; align-items: center; gap: 6px; }
.ask-row .btn:disabled { opacity: 0.55; cursor: not-allowed; }
.ask-note { margin: 0; font-size: 13px; color: var(--faint); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
@media (max-width: 560px) { .ask-head { flex-direction: column; align-items: flex-start; } .ask-row { flex-direction: column; } }

/* theme switch: shows a moon in light mode, a sun in dark mode */
.theme-btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.theme-btn .i-sun { display: none; }
:root[data-theme="dark"] .theme-btn .i-sun { display: block; }
:root[data-theme="dark"] .theme-btn .i-moon { display: none; }

/* terms, privacy, refunds */
.legal { max-width: 780px; padding-bottom: 20px; }
.legal h1 { margin: 24px 0 4px; }
.legal h2 { font-size: 20px; margin: 28px 0 8px; }
.legal p, .legal li { line-height: 1.65; color: var(--text); }
.legal ul { padding-left: 22px; }
.legal-meta { color: var(--muted); margin: 0 0 22px; }
.legal-links { margin-top: 36px; color: var(--muted); }
.legal-missing { background: var(--c-sun-base); color: #5a3d00; border-radius: 6px; padding: 0 6px; font-weight: 700; }

/* ---------- home: old formats burst into an Ahazoo topic ---------- */
.burst-stage { position: relative; border-radius: 28px; padding: 18px; background: radial-gradient(120% 90% at 50% 40%, var(--accent-bg), var(--surface) 70%); border: 1px solid var(--border); overflow: hidden; }
.burst-svg { display: block; width: 100%; height: auto; }
.burst-svg.tall { max-width: 520px; margin: 0 auto; }
.burst-replay { position: absolute; top: 14px; right: 14px; z-index: 2; height: 34px; padding: 0 14px; font-size: 13px; }
.burst-svg text { font-family: var(--font); }
/* the old formats: deliberately grey and flat */
.burst-stage { --ob-a: #8d97ab; --ob-b: #6b7489; --ob-c: #c9cfdb; --ob-page: #fbfbf8; --ob-ink: #c3c8d3; --ob-screen: #2d3243; }
:root[data-theme="dark"] .burst-stage { --ob-a: #5d6579; --ob-b: #474e60; --ob-c: #7d8597; --ob-page: #d9dbe2; --ob-ink: #9aa1b0; --ob-screen: #0d0f17; }
.ob-a { fill: var(--ob-a); } .ob-b { fill: var(--ob-b); } .ob-c { fill: var(--ob-c); }
.ob-page { fill: var(--ob-page); } .ob-edge { stroke: var(--ob-c); stroke-width: 2; }
.ob-ink { stroke: var(--ob-ink); stroke-width: 2; }
.ob-screen { fill: var(--ob-screen); } .ob-play-bg { fill: #fff; opacity: 0.18; } .ob-play { fill: #fff; opacity: 0.85; }
.ob-bar { fill: #fff; opacity: 0.25; } .ob-bar-on { fill: #ff5a5a; }
.ob-stand { stroke: var(--ob-b); stroke-width: 4; stroke-linecap: round; }
.ob-tiny { font-size: 9px; font-weight: 800; letter-spacing: 0.08em; fill: #fff; opacity: 0.85; }
.ob-tiny-light { letter-spacing: 0; font-weight: 600; }
.ob-name { font-size: 17px; font-weight: 800; fill: var(--text); }
.ob-pain { font-size: 14px; fill: var(--muted); }
.nb-ring { fill: none; stroke: var(--c-sun-base); stroke-width: 5; }
/* the Ahazoo topic */
.nb-card { filter: drop-shadow(0 18px 30px rgba(60, 40, 160, 0.25)); }
.nb-bg { fill: var(--surface); stroke: var(--accent); stroke-width: 2.5; }
.nb-head { font-size: 14px; font-weight: 700; fill: var(--muted); }
.nb-pill { fill: var(--accent-bg); } .nb-pill-t { font-size: 12px; font-weight: 800; fill: var(--accent); }
.nb-code { fill: #1d1a38; } .nb-bar { fill: rgba(124, 92, 255, 0.45); }
.nb-mono { font-family: var(--mono) !important; font-size: 15px; fill: #ecebff; }
.nb-lang { font-size: 11px; font-weight: 800; fill: #8f88d8; }
.nb-mem { fill: var(--surface-2); }
.nb-label { font-size: 12px; font-weight: 700; fill: var(--muted); } .nb-label-light { fill: #9aa3c7; }
.nb-box { fill: var(--c-sun-hi); stroke: var(--c-sun-lo); stroke-width: 2; }
.nb-val { font-family: var(--mono) !important; font-size: 30px; font-weight: 800; fill: #5a3d00; }
.nb-var { font-family: var(--mono) !important; font-size: 15px; font-weight: 800; fill: var(--accent); }
.nb-work { fill: var(--accent-bg); } .nb-mono-dark { font-family: var(--mono) !important; font-size: 16px; font-weight: 700; fill: var(--accent); }
.nb-out { fill: #12162a; } .nb-mono-out { font-family: var(--mono) !important; font-size: 18px; font-weight: 800; fill: #7cffb2; }
.nb-ctl { fill: var(--surface-2); } .nb-playbtn { fill: var(--accent); }
.nb-dot { fill: var(--border-strong); } .nb-dot.on { fill: var(--accent); }
.nb-cap { font-size: 13px; font-weight: 600; fill: var(--muted); }
.nb-tok rect { fill: var(--c-sun-base); stroke: var(--c-sun-lo); stroke-width: 2; }
.nb-tok text { font-family: var(--mono) !important; font-size: 17px; font-weight: 800; fill: #3d2a00; }
/* what replaced each old format */
.nb-gain-bg { fill: var(--surface); stroke: var(--accent-border); stroke-width: 2; filter: drop-shadow(0 8px 14px rgba(60, 40, 160, 0.14)); }
.nb-gain-ok { fill: var(--c-mint-base); } .nb-gain-tick { fill: none; stroke: #fff; stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; }
.nb-gain-t { font-size: 16px; font-weight: 800; fill: var(--text); }
.nb-gain-s { font-size: 12.5px; fill: var(--muted); }
.nb-gain-big { font-size: 17px; }
.burst-svg.tall .ob-name { font-size: 20px; } .burst-svg.tall .ob-pain { font-size: 16px; }
@media (max-width: 700px) { .burst-stage { padding: 10px; border-radius: 20px; } .burst-replay { top: 8px; right: 8px; } }
.ob-label { font-size: 9px; font-weight: 800; letter-spacing: 0.08em; fill: #4a5163; }
.nb-z { font-size: 15px; font-weight: 800; fill: var(--muted); font-style: italic; }
.nb-pop { font-family: "Baloo 2", var(--font) !important; font-size: 30px; font-weight: 800; fill: var(--c-coral-base); stroke: #fff; stroke-width: 5; paint-order: stroke; }
.nb-bubble { fill: var(--surface); stroke: var(--accent); stroke-width: 2.5; stroke-linejoin: round; }
.nb-bubble-t { font-size: 16px; font-weight: 800; fill: var(--accent); }
.burst-svg.tall .nb-bubble-t { font-size: 17px; }

/* ---------- home banner: Bit and the magic screen ---------- */
.hero-art .stage3d { display: grid; place-items: center; }
.hb-svg { width: 100%; height: 100%; max-height: 440px; overflow: visible; }
.hb-frame { stroke-width: 3 !important; }
.hb-screen { fill: var(--surface); stroke: var(--border-strong); stroke-width: 1.5; }
.hb-mono { font-size: 19px !important; }
.hb-eq { font-family: var(--mono); font-size: 22px; font-weight: 800; fill: var(--text); }
.hb-good { fill: var(--ok, #12b886); }
.hb-crate { font-family: var(--mono); font-size: 15px; font-weight: 800; fill: #fff; }
.hb-wood { fill: #C98A4B; }
.hb-small { font-size: 13px; font-weight: 600; fill: var(--muted); }
.hb-strong { font-weight: 800; fill: var(--text); }
.hb-watch { fill: var(--surface); stroke: var(--accent); stroke-width: 2; }
.hb-watch-t { font-family: var(--mono); font-size: 16px; font-weight: 800; fill: var(--accent); }
.hb-pill { fill: var(--accent-bg); stroke: var(--accent); stroke-width: 2; transition: fill 0.3s, stroke 0.3s; }
.hb-pill-grape { fill: color-mix(in srgb, var(--c-grape-base) 18%, var(--surface)); stroke: var(--c-grape-base); }
.hb-pill-coral { fill: color-mix(in srgb, var(--c-coral-base) 18%, var(--surface)); stroke: var(--c-coral-base); }
.hb-pill-mint { fill: color-mix(in srgb, var(--c-mint-base) 18%, var(--surface)); stroke: var(--c-mint-base); }
.hb-pill-sky { fill: color-mix(in srgb, var(--c-sky-base) 18%, var(--surface)); stroke: var(--c-sky-base); }
.hb-tab { font-size: 15px; font-weight: 700; fill: var(--muted); transition: fill 0.3s; }
.hb-tab.on { fill: var(--text); font-weight: 800; }

/* pre-rendered 'About this topic' block on /learn/<id> pages (tools/seo.py) */
.seo-about { margin-top: 22px; padding: 20px 24px; }
.seo-about h2 { margin: 0 0 8px; font-size: 18px; }
.seo-about h3 { margin: 14px 0 6px; font-size: 15px; }
.seo-about p { margin: 0 0 8px; color: var(--muted); }
.seo-about ul { margin: 0; padding-left: 18px; columns: 2; column-gap: 24px; }
.seo-about li { margin: 3px 0; }
@media (max-width: 600px) { .seo-about ul { columns: 1; } }