@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=IBM+Plex+Sans+Arabic:wght@400;500;600;700&display=swap');

:root {
  --paper: #f7f4ed;
  --paper-2: #eee9df;
  --white: #fffefa;
  --ink: #18243b;
  --muted: #697284;
  --line: #ddd8ce;
  --blue: #3959df;
  --blue-soft: #e7ebff;
  --coral: #df725d;
  --coral-soft: #fae9e3;
  --sage: #3c796d;
  --sage-soft: #e1eee7;
  --shadow: 0 22px 60px rgba(30, 40, 60, .09);
  --radius: 24px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "IBM Plex Sans Arabic", "Noto Sans Arabic", Tahoma, Arial, sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .2;
  background-image: radial-gradient(#79809a .55px, transparent .55px);
  background-size: 8px 8px;
  mask-image: linear-gradient(to bottom, #000, transparent 80%);
}
button, a { font: inherit; }
a { color: inherit; }
button { color: inherit; }
.shell { width: min(1160px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: absolute; top: -80px; right: 16px; z-index: 20; background: var(--ink); color: white; padding: 10px 16px; border-radius: 9px; }
.skip-link:focus { top: 12px; }

.site-header { position: relative; z-index: 5; border-bottom: 1px solid rgba(24, 36, 59, .08); }
.header-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; min-width: max-content; }
.brand-mark { width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; gap: 3px; background: var(--ink); border-radius: 13px 13px 13px 4px; transform: rotate(-4deg); }
.brand-mark i { display: block; width: 5px; border-radius: 8px; background: var(--paper); transform: rotate(4deg); }
.brand-mark i:nth-child(1) { height: 12px; opacity: .82; }
.brand-mark i:nth-child(2) { height: 20px; background: #ef7861; }
.brand-mark i:nth-child(3) { height: 15px; background: #99c7b3; }
.brand-copy { display: grid; line-height: 1.25; }
.brand-copy strong { font-size: 15px; letter-spacing: -.02em; }
.brand-copy small { margin-top: 4px; color: var(--muted); font: 9px/1 "DM Mono", monospace; letter-spacing: .13em; direction: ltr; text-align: right; }
.main-nav { display: flex; align-items: center; gap: clamp(18px, 3vw, 42px); margin-inline-start: auto; }
.main-nav a { position: relative; text-decoration: none; color: #566074; font-size: 13px; font-weight: 600; transition: color .2s; }
.main-nav a::after { content: ""; position: absolute; inset-inline: 0; bottom: -8px; height: 2px; background: var(--blue); transform: scaleX(0); transform-origin: right; transition: transform .2s; }
.main-nav a:hover { color: var(--blue); }
.main-nav a:hover::after { transform: scaleX(1); }
.header-cta { color: var(--blue); font-size: 13px; font-weight: 700; text-decoration: none; white-space: nowrap; }
.header-cta span { display: inline-block; margin-right: 4px; font-size: 16px; transition: transform .2s; }
.header-cta:hover span { transform: translate(-3px, -3px); }
.menu-toggle { display: none; }

.hero { min-height: 580px; display: grid; grid-template-columns: 1.03fr .97fr; align-items: center; gap: clamp(36px, 7vw, 90px); position: relative; padding-block: 60px 72px; }
.hero-copy { position: relative; z-index: 1; padding-block: 20px; }
.eyebrow, .section-kicker { display: inline-flex; align-items: center; gap: 9px; color: var(--blue); font: 500 11px/1.4 "DM Mono", "IBM Plex Sans Arabic", monospace; letter-spacing: .07em; direction: ltr; }
.eyebrow { direction: rtl; color: #596379; letter-spacing: 0; font-family: inherit; font-size: 12px; }
.eyebrow-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 5px var(--coral-soft); }
h1, h2, h3, p { margin-top: 0; }
.hero h1 { margin: 27px 0 18px; font-size: clamp(48px, 6.5vw, 82px); line-height: 1.18; letter-spacing: -.055em; font-weight: 600; }
.hero h1 span { color: var(--blue); }
.hero-lead { max-width: 530px; margin-bottom: 28px; color: #596276; font-size: clamp(16px, 1.6vw, 19px); line-height: 1.9; }
.inline-token { direction: ltr; unicode-bidi: isolate; display: inline-block; padding-inline: 3px; color: var(--blue); font: 600 1.1em Georgia, serif; }
.hero-actions { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 14px; min-height: 48px; padding: 10px 22px; border: 0; border-radius: 12px; text-decoration: none; font-size: 14px; font-weight: 700; cursor: pointer; transition: transform .18s, box-shadow .18s, background .18s; }
.button:hover { transform: translateY(-2px); }
.button:focus-visible, a:focus-visible, .quiz-option:focus-visible, .menu-toggle:focus-visible { outline: 3px solid #9eaefb; outline-offset: 3px; }
.button-primary { color: white; background: var(--blue); box-shadow: 0 10px 22px rgba(57, 89, 223, .2); }
.button-primary:hover { background: #2948ca; box-shadow: 0 12px 28px rgba(57, 89, 223, .26); }
.button-primary span { font-size: 19px; transition: transform .18s; }
.button-primary:hover span { transform: translateX(-4px); }
.read-time { display: inline-flex; align-items: center; gap: 9px; color: var(--muted); font-size: 12px; }
.read-time-mark { display: grid; place-items: center; width: 29px; height: 29px; border: 1px solid var(--line); border-radius: 50%; color: var(--ink); font: 10px "DM Mono", monospace; }
.hero-note { display: flex; gap: 10px; align-items: start; max-width: 410px; margin-top: 35px; color: #7b8290; font-size: 12px; }
.hero-note strong { color: var(--ink); }
.note-star { color: var(--coral); font-size: 18px; line-height: 1.1; }
.hero-art { position: relative; margin: 0; align-self: center; }
.hero-art::before { content: ""; position: absolute; width: 74%; aspect-ratio: 1; inset-inline-start: 5%; top: 8%; border-radius: 50%; background: #e5e7da; filter: blur(1px); }
.hero-art img { position: relative; display: block; width: 100%; aspect-ratio: 1.04 / 1; object-fit: cover; border-radius: 46% 46% 24px 24px; mix-blend-mode: multiply; box-shadow: var(--shadow); }
.hero-art figcaption { position: absolute; inset-inline: 18px; bottom: 16px; display: flex; justify-content: space-between; color: rgba(24, 36, 59, .72); font: 9px "DM Mono", monospace; letter-spacing: .13em; direction: ltr; }
.hero-sticker { position: absolute; top: 12%; inset-inline-end: -23px; display: grid; gap: 3px; padding: 12px 14px; color: var(--ink); background: var(--white); border: 1px solid rgba(24, 36, 59, .08); border-radius: 12px; box-shadow: 0 12px 30px rgba(30, 40, 60, .12); transform: rotate(6deg); font: 500 13px/1.2 "DM Mono", monospace; direction: ltr; }
.hero-sticker span:nth-child(2) { color: var(--coral); }
.hero-sticker span:nth-child(3) { color: var(--blue); }
.hero-index { position: absolute; bottom: 26px; inset-inline-end: 0; color: #a3a4a2; font: 10px "DM Mono", monospace; direction: ltr; letter-spacing: .16em; }

.intro-band { background: var(--ink); color: var(--paper); }
.intro-inner { min-height: 106px; display: flex; align-items: center; gap: clamp(18px, 4vw, 55px); }
.intro-label { color: #9eb0ff; font-size: 12px; font-weight: 600; white-space: nowrap; }
.intro-inner p { margin: 0; font-size: clamp(14px, 1.5vw, 18px); }
.intro-inner strong { color: white; }
.intro-mark { margin-inline-start: auto; color: #8293ed; font: 16px "DM Mono", monospace; direction: ltr; white-space: nowrap; }

.section { padding-block: 100px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 38px; }
.section-heading h2, .practice-intro h2 { margin: 11px 0 0; font-size: clamp(32px, 4.2vw, 49px); line-height: 1.3; letter-spacing: -.045em; font-weight: 600; }
.section-heading > p { max-width: 300px; margin: 0 0 4px; color: var(--muted); font-size: 14px; line-height: 1.8; }
.lesson-stack { display: grid; grid-template-columns: repeat(3, 1fr); align-items: stretch; gap: 16px; }
.lesson-card { display: flex; flex-direction: column; min-height: 440px; padding: 26px; border: 1px solid rgba(24, 36, 59, .08); border-radius: var(--radius); background: var(--white); box-shadow: 0 12px 38px rgba(31, 39, 56, .035); transition: transform .22s, box-shadow .22s; }
.lesson-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.card-an { transform: translateY(16px); }
.card-an:hover { transform: translateY(11px); }
.lesson-symbol { align-self: start; min-height: 75px; margin-bottom: 12px; color: var(--blue); font: 600 58px/.95 Georgia, "Times New Roman", serif; letter-spacing: -.06em; }
.card-an .lesson-symbol { color: var(--coral); }
.card-the .lesson-symbol { color: var(--sage); }
.symbol-period { color: var(--ink); }
.lesson-body { display: flex; flex-direction: column; height: 100%; }
.card-topline { display: flex; justify-content: space-between; align-items: center; margin-bottom: 13px; }
.pill { display: inline-flex; align-items: center; min-height: 24px; padding: 2px 10px; border-radius: 999px; font-size: 10px; font-weight: 600; }
.pill-blue { color: #334ec4; background: var(--blue-soft); }
.pill-coral { color: #af4b39; background: var(--coral-soft); }
.pill-sage { color: #32695f; background: var(--sage-soft); }
.mini-index { color: #9ca3ae; font: 10px "DM Mono", monospace; }
.lesson-card h3 { margin: 0 0 12px; font-size: 19px; line-height: 1.5; }
.lesson-card h3 bdi { color: var(--blue); font: 600 1.08em Georgia, serif; }
.card-an h3 bdi { color: var(--coral); }
.card-the h3 bdi { color: var(--sage); }
.lesson-card p { min-height: 82px; margin-bottom: 18px; color: #626b7c; font-size: 12px; line-height: 1.9; }
.example-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px 12px; padding-block: 9px; border-top: 1px solid #eeeae2; }
.example { direction: ltr; unicode-bidi: isolate; color: var(--ink); font: 16px Georgia, "Times New Roman", serif; }
.translation { color: #8b909a; font-size: 10px; }
.lesson-tip { display: flex; gap: 7px; align-items: center; margin-top: auto; padding-top: 15px; color: #838a97; font-size: 10px; }
.lesson-tip > span { color: var(--coral); font-size: 15px; }
.example-inline { color: var(--ink); font: 13px Georgia, serif; }
.general-note { display: flex; align-items: center; gap: 18px; max-width: 710px; margin: 40px auto 0; padding: 17px 22px; border: 1px solid #d6e5dc; border-radius: 16px; background: rgba(225, 238, 231, .48); }
.general-icon { display: grid; place-items: center; flex: 0 0 38px; height: 38px; border-radius: 50%; background: var(--sage); color: white; font: 21px Georgia, serif; }
.general-note strong { display: block; margin-bottom: 2px; font-size: 13px; }
.general-note p { margin: 0; color: #66766f; font-size: 12px; }

.guide-section { padding-block: 92px; background: #eeece4; position: relative; overflow: hidden; }
.guide-section::after { content: "?"; position: absolute; left: 3%; top: -115px; color: rgba(57, 89, 223, .045); font: 400 360px/1 Georgia, serif; pointer-events: none; }
.guide-shell { position: relative; z-index: 1; }
.guide-heading { margin-bottom: 32px; }
.decision-path { max-width: 850px; margin-inline: auto; }
.decision-step { display: grid; grid-template-columns: 48px 1fr auto; align-items: center; gap: 16px; padding: 20px 24px; border: 1px solid rgba(24, 36, 59, .08); border-radius: 15px; background: rgba(255, 254, 250, .78); }
.step-number { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; background: var(--ink); color: white; font: 13px "DM Mono", monospace; }
.decision-step h3 { margin: 0 0 3px; font-size: 14px; }
.decision-step p { margin: 0; color: var(--muted); font-size: 11px; }
.step-answer { padding: 6px 12px; border-radius: 8px; font-size: 11px; font-weight: 600; white-space: nowrap; }
.step-answer bdi { font: 600 13px Georgia, serif; }
.answer-blue { color: #334ec4; background: var(--blue-soft); }
.answer-coral { color: #ac4a3c; background: var(--coral-soft); }
.answer-ink { color: white; background: #303c57; }
.answer-sage { color: #316459; background: var(--sage-soft); }
.path-connector { width: 1px; height: 16px; margin-inline-start: 42px; background: #b9bdc8; }
.sound-pair { display: flex; justify-content: space-between; align-items: center; gap: 25px; max-width: 850px; margin: 27px auto 0; padding: 20px 24px; border-radius: 16px; background: var(--ink); color: white; }
.sound-pair > div { display: grid; gap: 7px; }
.sound-caption { color: #aab6f7; font-size: 10px; }
.sound-pair strong { direction: ltr; unicode-bidi: isolate; font: 17px Georgia, serif; }
.sound-pair strong bdi:first-child { color: #a9b5ff; }
.sound-pair strong bdi:last-child { color: #f29480; }
.versus { margin-inline: 9px; color: #939bad; font: 10px "IBM Plex Sans Arabic", sans-serif; }
.sound-pair p { max-width: 360px; margin: 0; color: #c9cfdb; font-size: 11px; line-height: 1.8; }
.sound-pair p bdi { color: white; font: 12px Georgia, serif; }

.comparison-section { padding-bottom: 112px; }
.comparison-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 18px; background: var(--white); box-shadow: 0 10px 30px rgba(31,39,56,.035); }
.comparison-table { width: 100%; min-width: 720px; border-collapse: collapse; text-align: right; }
.comparison-table th, .comparison-table td { padding: 17px 22px; border-bottom: 1px solid #ece8df; font-size: 12px; }
.comparison-table thead th { color: #727b8b; background: #f3f0e9; font-size: 10px; font-weight: 600; }
.comparison-table tbody tr:last-child th, .comparison-table tbody tr:last-child td { border-bottom: 0; }
.comparison-table tbody tr:hover { background: #fbfaf5; }
.table-token { display: inline-grid; place-items: center; min-width: 38px; height: 30px; padding-inline: 7px; border-radius: 8px; direction: ltr; font: 16px Georgia, serif; }
.token-a { color: #334ec4; background: var(--blue-soft); }
.token-an { color: #aa4f3c; background: var(--coral-soft); }
.token-the { color: #32695f; background: var(--sage-soft); }
.token-zero { color: #465069; background: #e9e9ed; }
.table-example { direction: ltr; unicode-bidi: isolate; font: 15px Georgia, serif; color: var(--ink); }
.table-hint { display: none; margin: 8px 4px 0; color: var(--muted); font-size: 10px; }

.practice-section { position: relative; overflow: hidden; padding-block: 100px; background: #dfe6f7; }
.practice-section::before { content: "the"; position: absolute; bottom: -155px; inset-inline-end: -30px; color: rgba(57, 89, 223, .055); font: 500 330px/.9 Georgia, serif; direction: ltr; }
.practice-shell { position: relative; z-index: 1; display: grid; grid-template-columns: .85fr 1.15fr; align-items: center; gap: clamp(35px, 7vw, 90px); }
.practice-intro { padding-inline-start: 15px; }
.practice-intro h2 { margin: 13px 0 17px; }
.practice-intro h2 span { color: var(--blue); }
.practice-intro > p { max-width: 290px; color: #636e82; font-size: 14px; line-height: 1.9; }
.practice-stats { display: flex; align-items: center; gap: 13px; margin-top: 32px; color: #727b8c; font-size: 11px; line-height: 1.5; }
.stat-number { color: var(--blue); font: 500 31px "DM Mono", monospace; }
.quiz-card { min-height: 450px; padding: clamp(24px, 4vw, 40px); border: 1px solid rgba(24,36,59,.08); border-radius: 24px; background: var(--white); box-shadow: 0 25px 65px rgba(36, 48, 86, .12); }
.quiz-topline { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.quiz-label { color: var(--ink); font-size: 12px; font-weight: 700; }
.quiz-count { color: #858c9a; font: 10px "DM Mono", monospace; direction: ltr; }
.progress-track { height: 5px; margin: 17px 0 29px; overflow: hidden; border-radius: 20px; background: #eaebef; }
.progress-track span { display: block; width: 0; height: 100%; border-radius: inherit; background: var(--blue); transition: width .32s ease; }
.quiz-instruction { margin-bottom: 7px; color: var(--muted); font-size: 11px; }
.quiz-question { margin-bottom: 22px; color: var(--ink); font: 22px/1.55 Georgia, "Times New Roman", serif; direction: ltr; text-align: left; }
.quiz-options { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; direction: ltr; }
.quiz-option { min-height: 52px; padding: 8px; border: 1px solid #e1e3e9; border-radius: 10px; background: #fff; color: var(--ink); font: 18px Georgia, serif; cursor: pointer; transition: border .16s, background .16s, transform .16s; }
.quiz-option:hover:not(:disabled) { transform: translateY(-2px); border-color: #9ca9e8; background: #f8f9ff; }
.quiz-option:disabled { cursor: default; }
.quiz-option.correct { border-color: #68a18e; background: var(--sage-soft); color: #26604f; }
.quiz-option.incorrect { border-color: #df8c78; background: var(--coral-soft); color: #9f4939; }
.quiz-feedback { margin-top: 17px; padding: 12px 14px; border-radius: 10px; color: #596276; background: #f2f1ed; font-size: 11px; line-height: 1.8; }
.quiz-feedback.is-correct { background: var(--sage-soft); color: #315e54; }
.quiz-feedback.is-incorrect { background: var(--coral-soft); color: #874a3e; }
.next-button { min-height: 42px; margin-top: 17px; padding: 8px 17px; font-size: 12px; }
.quiz-result { min-height: 310px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.result-mark { display: grid; place-items: center; width: 52px; height: 52px; margin-bottom: 12px; border-radius: 50%; background: var(--sage-soft); color: var(--sage); font-size: 25px; }
.result-kicker { margin-bottom: 5px; color: var(--muted); font-size: 11px; }
.quiz-result h3 { margin: 0 0 7px; font-size: 28px; }
.quiz-result > p:not(.result-kicker) { margin: 0 0 18px; color: var(--muted); font-size: 12px; }
.quiz-result .button { min-height: 42px; font-size: 12px; }
[hidden] { display: none !important; }

.closing-note { min-height: 175px; display: flex; align-items: center; gap: 25px; position: relative; }
.closing-quote { align-self: flex-start; margin-top: 34px; color: var(--coral); font: 78px/.8 Georgia, serif; }
.closing-note p { margin: 0; color: #6b7381; font-size: 15px; }
.closing-note strong { color: var(--ink); }
.closing-note bdi { color: var(--blue); font: 600 1.05em Georgia, serif; }
.back-top { margin-inline-start: auto; display: inline-flex; align-items: center; gap: 9px; color: var(--blue); text-decoration: none; font-size: 12px; font-weight: 700; white-space: nowrap; }
.back-top span { font-size: 18px; }
.site-footer { border-top: 1px solid rgba(24,36,59,.1); background: #f0ede6; }
.footer-inner { min-height: 150px; display: flex; align-items: center; justify-content: space-between; gap: 30px; padding-block: 24px; }
.footer-brand .brand-mark { width: 32px; height: 32px; border-radius: 10px 10px 10px 3px; }
.footer-brand .brand-copy strong { font-size: 13px; }
.footer-brand .brand-copy small { font-size: 8px; }
.footer-inner > div:first-child > p { margin: 10px 0 0; color: #818793; font-size: 10px; }
.source-links { display: grid; gap: 4px; }
.source-links > span { margin-bottom: 3px; color: #818793; font-size: 10px; }
.source-links a { width: fit-content; color: #4f5d7e; font-size: 10px; text-decoration-color: #aab1bf; text-underline-offset: 3px; }
.source-links a:hover { color: var(--blue); }
.footer-year { color: #989da5; font: 9px "DM Mono", monospace; direction: ltr; white-space: nowrap; }

@media (max-width: 850px) {
  .shell { width: min(100% - 36px, 680px); }
  .header-inner { min-height: 72px; gap: 16px; }
  .main-nav { gap: 18px; }
  .main-nav a { font-size: 11px; }
  .header-cta { display: none; }
  .hero { min-height: auto; grid-template-columns: 1.05fr .95fr; gap: 20px; padding-block: 55px 60px; }
  .hero h1 { font-size: clamp(43px, 7vw, 64px); }
  .hero-art img { border-radius: 42% 42% 20px 20px; }
  .lesson-stack { gap: 10px; }
  .lesson-card { padding: 19px; }
  .lesson-card h3 { font-size: 16px; }
  .lesson-card p { min-height: 108px; }
  .example-row { display: grid; justify-content: start; gap: 2px; }
  .practice-shell { grid-template-columns: .75fr 1.25fr; gap: 26px; }
  .quiz-card { padding: 24px; }
}

@media (max-width: 620px) {
  html { scroll-padding-top: 70px; }
  .shell { width: calc(100% - 32px); }
  .header-inner { min-height: 68px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-copy strong { font-size: 13px; }
  .brand-copy small { font-size: 8px; }
  .menu-toggle { display: grid; gap: 5px; width: 38px; height: 38px; place-content: center; margin-inline-start: auto; border: 1px solid var(--line); border-radius: 10px; background: transparent; cursor: pointer; }
  .menu-toggle span { display: block; width: 16px; height: 1.5px; background: var(--ink); transition: transform .2s; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }
  .main-nav { position: absolute; top: 60px; inset-inline: 16px; display: none; align-items: stretch; gap: 0; padding: 8px 15px; border: 1px solid var(--line); border-radius: 14px; background: var(--white); box-shadow: var(--shadow); }
  .main-nav.is-open { display: grid; }
  .main-nav a { padding: 10px 0; border-bottom: 1px solid #efede7; font-size: 13px; }
  .main-nav a:last-child { border-bottom: 0; }
  .main-nav a::after { display: none; }
  .hero { grid-template-columns: 1fr; gap: 18px; padding-block: 35px 48px; }
  .hero-copy { padding-block: 8px; }
  .hero h1 { margin: 20px 0 12px; font-size: clamp(46px, 14vw, 68px); }
  .hero-lead { max-width: 100%; font-size: 15px; }
  .hero-note { margin-top: 23px; }
  .hero-art { width: min(86%, 380px); margin-inline: auto; }
  .hero-art img { aspect-ratio: 1.16 / 1; border-radius: 42% 42% 20px 20px; }
  .hero-sticker { inset-inline-end: -17px; top: 11%; }
  .hero-index { bottom: 17px; }
  .intro-inner { min-height: 112px; display: grid; grid-template-columns: auto 1fr; gap: 3px 14px; padding-block: 18px; }
  .intro-label { grid-row: span 2; align-self: start; padding-top: 4px; font-size: 10px; }
  .intro-inner p { font-size: 13px; line-height: 1.8; }
  .intro-mark { grid-column: 2; margin: 0; font-size: 12px; }
  .section { padding-block: 68px; }
  .section-heading { display: block; margin-bottom: 25px; }
  .section-heading h2, .practice-intro h2 { font-size: 35px; }
  .section-heading > p { max-width: 100%; margin-top: 11px; font-size: 12px; }
  .lesson-stack { grid-template-columns: 1fr; gap: 12px; }
  .lesson-card { min-height: auto; padding: 23px; }
  .card-an, .card-an:hover { transform: none; }
  .lesson-symbol { min-height: 62px; font-size: 50px; }
  .lesson-card p { min-height: 0; margin-bottom: 14px; }
  .example-row { display: flex; }
  .general-note { align-items: flex-start; margin-top: 24px; padding: 15px; }
  .guide-section { padding-block: 68px; }
  .guide-section::after { left: -22px; top: -44px; font-size: 220px; }
  .decision-step { grid-template-columns: 38px 1fr; gap: 10px 12px; padding: 15px; }
  .step-number { width: 34px; height: 34px; grid-row: span 2; }
  .decision-step h3 { font-size: 12px; }
  .decision-step p { font-size: 10px; }
  .step-answer { grid-column: 2; justify-self: start; font-size: 10px; }
  .path-connector { margin-inline-start: 31px; height: 12px; }
  .sound-pair { display: grid; gap: 12px; padding: 17px; }
  .sound-pair strong { font-size: 15px; }
  .sound-pair p { font-size: 10px; }
  .comparison-section { padding-bottom: 72px; }
  .comparison-table th, .comparison-table td { padding: 13px 15px; }
  .table-hint { display: block; }
  .practice-section { padding-block: 68px; }
  .practice-shell { grid-template-columns: 1fr; gap: 23px; }
  .practice-intro { padding-inline-start: 0; }
  .practice-intro h2 { margin-block: 8px 10px; }
  .practice-intro > p { max-width: 100%; margin-bottom: 0; font-size: 12px; }
  .practice-stats { display: none; }
  .quiz-card { min-height: 405px; padding: 22px 18px; }
  .quiz-question { font-size: 19px; }
  .quiz-options { gap: 7px; }
  .quiz-option { min-height: 47px; }
  .closing-note { min-height: 170px; gap: 13px; flex-wrap: wrap; padding-block: 27px; }
  .closing-quote { margin-top: 14px; font-size: 55px; }
  .closing-note p { flex: 1; font-size: 12px; }
  .back-top { flex-basis: 100%; margin-inline-start: 68px; font-size: 11px; }
  .footer-inner { display: grid; grid-template-columns: 1fr auto; align-items: start; gap: 22px 14px; padding-block: 24px; }
  .footer-inner > div:first-child { grid-row: span 2; }
  .source-links a { font-size: 9px; }
  .footer-year { align-self: end; white-space: normal; text-align: left; font-size: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}