:root {
  --ink: #173b3b;
  --ink-soft: #53706e;
  --paper: #f7f5ee;
  --paper-deep: #edeadd;
  --white: #fffdf8;
  --teal: #257d78;
  --teal-dark: #145552;
  --coral: #ef765d;
  --yellow: #f4cc70;
  --line: #d9ded3;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: 'Trebuchet MS', 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); line-height: 1.6; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
.site-header { border-bottom: 1px solid rgba(23, 59, 59, .12); background: var(--paper); }
.header-inner { max-width: 1180px; margin: 0 auto; padding: 20px 32px; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.brand { text-decoration: none; display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .02em; }
.brand > span:last-child span { color: var(--coral); }
.brand-mark { display: inline-grid; place-items: center; width: 30px; height: 30px; background: var(--coral); color: var(--white); font: 700 19px var(--serif); transform: rotate(-6deg); }
.back-link, .text-link { font-size: 13px; font-weight: 700; text-underline-offset: 4px; }
.back-link { color: var(--teal-dark); }
.hero { overflow: hidden; background: var(--teal-dark); color: var(--white); }
.hero-inner { max-width: 1180px; margin: 0 auto; padding: 92px 32px 82px; position: relative; }
.hero-inner::after { content: ''; position: absolute; width: 360px; height: 360px; right: 3%; top: -125px; border: 1px solid rgba(244, 204, 112, .42); border-radius: 50%; box-shadow: 0 0 0 24px rgba(244, 204, 112, .07), 0 0 0 48px rgba(244, 204, 112, .05); }
.eyebrow, .kicker, .nav-label, .prompt-top span, .timer-label, .message-label, .example-tag, .revealed-answer span { text-transform: uppercase; letter-spacing: .13em; font-size: 11px; font-weight: 800; }
.eyebrow { color: var(--yellow); display: flex; align-items: center; gap: 10px; position: relative; z-index: 1; }
.eyebrow span { display: inline-block; width: 5px; height: 5px; border-radius: 50%; background: var(--coral); }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-family: var(--serif); font-weight: 400; line-height: 1.05; }
h1 { max-width: 820px; margin: 25px 0 24px; font-size: clamp(46px, 7vw, 88px); letter-spacing: 0; position: relative; z-index: 1; }
h1 em { color: var(--yellow); font-style: normal; }
.hero-lede { max-width: 590px; color: #d6e5d9; font-size: 18px; position: relative; z-index: 1; }
.hero-actions { display: flex; align-items: center; gap: 26px; margin: 34px 0 38px; position: relative; z-index: 1; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; border: 0; border-radius: 0; padding: 13px 20px; font-size: 13px; font-weight: 800; text-decoration: none; cursor: pointer; transition: transform .2s ease, background .2s ease; }
.button:hover, .copy-button:hover { transform: translateY(-2px); }
.button-primary { background: var(--coral); color: var(--white); }
.button-primary:hover { background: #f4876f; }
.text-link { color: var(--white); }
.lesson-meta { font-size: 12px; color: #a7c9c0; display: flex; gap: 10px; align-items: center; position: relative; z-index: 1; }
.meta-dot { width: 7px; height: 7px; background: var(--yellow); border-radius: 50%; }.meta-divider { width: 1px; height: 15px; background: #63958d; }
.lesson-layout { max-width: 1180px; padding: 78px 32px 0; margin: 0 auto; display: grid; grid-template-columns: 190px minmax(0, 760px); gap: 80px; }
.lesson-nav { position: sticky; top: 24px; align-self: start; display: grid; gap: 9px; }.nav-label { color: var(--coral); margin-bottom: 6px; }.lesson-nav a { display: flex; gap: 12px; text-decoration: none; color: var(--ink-soft); font-size: 12px; }.lesson-nav a:hover { color: var(--teal); }.lesson-nav a::first-letter { color: var(--coral); }
.lesson-nav a span { color: var(--ink); font-weight: 700; }
.lesson-content { min-width: 0; }.intro-section { display: grid; grid-template-columns: 76px 1fr; gap: 28px; padding-bottom: 86px; border-bottom: 1px solid var(--line); }.section-number, .voice-number { color: var(--coral); font: 36px var(--serif); }.kicker { color: var(--teal); margin-bottom: 15px; }.intro-section h2, .section-block h2, .final-challenge h2 { font-size: clamp(32px, 4vw, 48px); margin-bottom: 21px; }.intro-section p { max-width: 600px; color: var(--ink-soft); font-size: 16px; }.intro-section p + p { margin-top: 17px; }
.section-block { padding: 86px 0; border-bottom: 1px solid var(--line); }.section-heading { max-width: 630px; margin-bottom: 34px; }.section-heading p:not(.kicker) { color: var(--ink-soft); }.practice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }.practice-card { background: var(--white); padding: 25px 22px 23px; min-height: 170px; border: 1px solid #e3e4da; }.card-icon { color: var(--coral); font-size: 11px; font-weight: 800; }.practice-card h3 { margin: 17px 0 6px; font-size: 17px; }.practice-card p { color: var(--ink-soft); font-size: 13px; line-height: 1.5; margin-bottom: 0; }
.split-section { display: grid; grid-template-columns: .82fr 1.18fr; gap: 38px; align-items: start; }.split-section .section-heading { margin: 0; }.prompt-card { background: var(--teal-dark); color: var(--white); padding: 25px; }.prompt-card-wide { max-width: 700px; }.prompt-top { display: flex; justify-content: space-between; align-items: center; gap: 16px; color: var(--yellow); }.copy-button { border: 1px solid rgba(255,255,255,.35); background: transparent; color: var(--white); padding: 8px 11px; font-size: 11px; font-weight: 800; cursor: pointer; transition: transform .2s ease, background .2s ease; white-space: nowrap; }.copy-button:hover { background: rgba(255,255,255,.1); }.prompt-text { font: 19px/1.5 var(--serif); margin: 22px 0; }.prompt-note { color: #acd0c3; font-size: 12px; margin-bottom: 0; }.prompt-checklist { display: flex; flex-wrap: wrap; gap: 9px; color: #d6e5d9; font-size: 11px; }.prompt-checklist span { border: 1px solid rgba(255,255,255,.23); padding: 5px 8px; }.partner-section { padding-top: 78px; }
.roleplay-list { border-top: 1px solid var(--line); }.roleplay-row { display: grid; grid-template-columns: 150px 1fr auto; align-items: center; gap: 22px; padding: 19px 0; border-bottom: 1px solid var(--line); }.roleplay-label { font-weight: 800; font-size: 13px; }.roleplay-row p { font: 16px/1.4 var(--serif); margin: 0; }.roleplay-row .copy-button { color: var(--teal-dark); border-color: var(--teal); }
.voice-section { display: grid; grid-template-columns: 76px 1fr; gap: 28px; background: var(--paper-deep); padding: 50px 42px; margin: 86px 0 0; border: 0; }.voice-section h2 { margin-bottom: 14px; }.voice-section p { color: var(--ink-soft); }.step-list { list-style: none; padding: 0; margin: 25px 0; display: grid; gap: 12px; }.step-list li { display: flex; align-items: center; gap: 13px; font-weight: 700; font-size: 14px; }.step-list li span { display: grid; place-items: center; width: 25px; height: 25px; background: var(--coral); color: var(--white); font-size: 11px; }.small-note { font-size: 13px; border-left: 3px solid var(--yellow); padding-left: 13px; }
.correction-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 14px; }.example-correction { border: 1px solid var(--line); padding: 25px; background: var(--white); }.example-tag { color: var(--coral); }.wrong, .better { font: 22px var(--serif); margin: 21px 0 4px; }.wrong { text-decoration: line-through; text-decoration-color: var(--coral); color: var(--ink-soft); }.better { color: var(--teal-dark); }.why { color: var(--ink-soft); font-size: 12px; margin: 16px 0 0; }
.quick-section { padding-bottom: 94px; }.challenge-card { background: var(--yellow); padding: 29px; max-width: 620px; position: relative; }.challenge-header { display: flex; justify-content: space-between; color: var(--teal-dark); }.challenge-count { font-size: 12px; font-weight: 800; }.message-label { color: var(--teal-dark); margin: 31px 0 9px; }.message-bubble { background: var(--white); padding: 17px 20px; margin: 0 0 23px; font: 22px var(--serif); max-width: 500px; }.button-dark { background: var(--teal-dark); color: var(--white); }.revealed-answer { border-left: 3px solid var(--teal-dark); margin-top: 22px; padding-left: 15px; }.revealed-answer span { color: var(--teal-dark); }.revealed-answer p { font: 19px var(--serif); margin: 6px 0 0; }.next-challenge { display: block; border: 0; padding: 0; margin-top: 24px; background: transparent; color: var(--teal-dark); font-weight: 800; font-size: 13px; cursor: pointer; }
.routine-section { padding-bottom: 88px; }.routine-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }.routine-item { padding: 23px 14px; border-right: 1px solid var(--line); display: grid; gap: 7px; }.routine-item:last-child { border-right: 0; }.routine-item strong { color: var(--coral); font: 28px var(--serif); }.routine-item span { font-size: 12px; font-weight: 800; }.reminder { background: var(--white); margin-top: 25px; padding: 19px 22px; color: var(--ink-soft); font-size: 13px; }.reminder strong { color: var(--ink); }
.final-challenge { margin: 0 0 90px; padding: 62px 52px; background: var(--coral); color: var(--white); }.final-challenge .kicker { color: var(--yellow); }.final-challenge h2 { max-width: 530px; }.final-challenge > p:not(.kicker):not(.after-text) { max-width: 560px; color: #fff1e9; }.final-prompt { background: rgba(23, 59, 59, .22); padding: 22px; margin: 28px 0 24px; display: flex; align-items: center; gap: 25px; justify-content: space-between; }.final-prompt p, .after-prompt { font: 18px/1.5 var(--serif); margin: 0; }.button-light { background: var(--white); color: var(--teal-dark); }.after-text { font-size: 12px; text-transform: uppercase; font-weight: 800; letter-spacing: .1em; color: #fff1e9; margin-bottom: 7px; }.after-prompt { border-bottom: 1px solid rgba(255,255,255,.35); padding-bottom: 20px; }.final-actions { display: flex; align-items: center; gap: 25px; margin-top: 28px; }.final-resource-link { font-size: 13px; font-weight: 800; }.site-footer { max-width: 1180px; margin: 0 auto; padding: 28px 32px 42px; display: flex; align-items: center; gap: 18px; color: var(--ink-soft); font-size: 12px; }.site-footer > div { display: flex; align-items: center; gap: 9px; color: var(--ink); font-weight: 800; }.site-footer .brand-mark { width: 25px; height: 25px; font-size: 16px; }.site-footer p { margin: 0; }.site-footer a { margin-left: auto; font-weight: 800; }
.resources-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.resource-card { background: var(--white); padding: 32px; border: 1px solid var(--line); text-decoration: none; color: inherit; display: block; transition: transform .2s ease, box-shadow .2s ease; }
.resource-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(23, 59, 59, .08); }
.resource-card-tag { text-transform: uppercase; letter-spacing: .13em; font-size: 11px; font-weight: 800; color: var(--coral); display: block; margin-bottom: 12px; }
.resource-card h3 { color: var(--teal-dark); margin: 0 0 14px; font-family: var(--serif); font-weight: 400; font-size: 20px; }
.resource-card p { color: var(--ink-soft); font-size: 14px; margin: 0 0 20px; line-height: 1.6; }
.resource-card-meta { display: flex; gap: 16px; font-size: 12px; color: var(--ink-soft); border-top: 1px solid var(--line); padding-top: 16px; margin-top: 20px; }
.resource-card-cta { display: inline-flex; gap: 6px; color: var(--coral); font-weight: 800; margin-top: 18px; font-size: 13px; text-decoration: none; }
.lesson-loading, .lesson-error { max-width: 760px; margin: 60px auto; padding: 24px; background: var(--white); border: 1px solid var(--line); }
.lesson-error { border-left: 4px solid var(--coral); }
.lesson-card-grid, .lesson-stack { display: grid; gap: 14px; }
.lesson-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.lesson-content-card, .lesson-callout { min-width: 0; padding: 22px; background: var(--white); border: 1px solid var(--line); }
.lesson-content-card h3, .lesson-callout h3, .subsection-title { margin: 0 0 12px; color: var(--teal-dark); font-size: 17px; }
.lesson-content-card p:last-child { margin-bottom: 0; }
.intensity-label, .prompt-label { display: block; margin: 0 0 12px; color: var(--coral); font-size: 11px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.lesson-example { margin: 14px 0 0; padding-left: 14px; border-left: 3px solid var(--yellow); color: var(--ink); font: 17px/1.5 var(--serif); }
.lesson-note, .lesson-caution { margin: 12px 0 0; color: var(--ink-soft); font-size: 13px; }
.lesson-caution { padding: 10px 12px; background: var(--paper-deep); border-left: 3px solid var(--coral); }
.expression-details { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 8px 14px; margin: 0; font-size: 13px; }
.expression-details dt { color: var(--teal-dark); font-weight: 800; }
.expression-details dd { margin: 0; color: var(--ink-soft); }
.lesson-callout { background: var(--paper-deep); }
.lesson-callout ul { margin: 0; padding-left: 20px; color: var(--ink-soft); }
.lesson-callout li + li { margin-top: 7px; }
.dialogue-transcript { border-top: 1px solid var(--line); }
.dialogue-turn { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.dialogue-turn strong { color: var(--coral); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.dialogue-turn p { margin: 0; font: 16px/1.5 var(--serif); }
.prompt-card h3 { margin-bottom: 18px; }
.answer-toggle { margin-top: 2px; }
.sample-answer { margin-top: 16px; padding: 13px 16px; background: var(--paper); border-left: 3px solid var(--teal); }
.sample-answer[hidden] { display: none; }
.sample-answer p { margin: 0; white-space: pre-line; color: var(--ink); font: 16px/1.55 var(--serif); }
.quiz-options { display: grid; gap: 9px; }
.quiz-option, .fill-input { min-width: 0; border: 1px solid var(--line); background: var(--paper); color: var(--ink); padding: 12px 14px; font: inherit; }
.quiz-option { text-align: left; cursor: pointer; }
.quiz-option:hover:enabled { border-color: var(--teal); }
.quiz-option:focus-visible, .fill-input:focus-visible, .button:focus-visible { outline: 2px solid var(--coral); outline-offset: 2px; }
.quiz-option.correct { background: #dff5e7; border-color: var(--teal); }
.quiz-option.incorrect { background: #fbe6df; border-color: var(--coral); }
.quiz-option:disabled { cursor: default; }
.quiz-feedback { min-height: 24px; margin: 12px 0 0; font-size: 13px; font-weight: 800; }
.quiz-feedback.success { color: var(--teal-dark); }
.quiz-feedback.error { color: #9f3f37; }
.fill-sentence { display: flex; flex-wrap: wrap; align-items: baseline; gap: 7px; margin: 0 0 16px; }
.fill-input { flex: 1 1 180px; }
.fill-card > .button { min-height: 44px; }
.lesson-section:last-child { border-bottom: 0; }
@media (max-width: 850px) { .lesson-layout { grid-template-columns: 1fr; gap: 30px; padding-top: 40px; }.lesson-nav { position: static; display: flex; flex-wrap: wrap; gap: 8px 18px; border-bottom: 1px solid var(--line); padding-bottom: 22px; }.nav-label { width: 100%; margin: 0; }.split-section, .correction-grid { grid-template-columns: 1fr; }.hero-inner::after { right: -190px; }.roleplay-row { grid-template-columns: 120px 1fr; }.roleplay-row .copy-button { grid-column: 2; justify-self: start; }.voice-section { margin-top: 50px; }.resources-grid { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .header-inner, .hero-inner, .lesson-layout, .site-footer { padding-left: 20px; padding-right: 20px; }.header-inner { align-items: flex-start; }.back-link { text-align: right; font-size: 11px; }.hero-inner { padding-top: 62px; padding-bottom: 58px; }.hero-lede { font-size: 16px; }.hero-actions, .final-actions { align-items: flex-start; flex-direction: column; gap: 17px; }.lesson-content { width: 100%; }.intro-section, .voice-section { grid-template-columns: 1fr; gap: 10px; }.section-block { padding: 62px 0; }.practice-grid { grid-template-columns: repeat(2, 1fr); }.practice-card { padding: 20px 15px; min-height: 160px; }.roleplay-row { display: block; padding: 21px 0; }.roleplay-label { display: block; margin-bottom: 8px; }.roleplay-row p { margin-bottom: 13px; }.voice-section { padding: 30px 22px; }.routine-grid { grid-template-columns: repeat(2, 1fr); }.routine-item:nth-child(2) { border-right: 0; }.routine-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }.final-challenge { padding: 42px 23px; margin-bottom: 60px; }.final-prompt { display: block; }.final-prompt .copy-button { margin-top: 19px; }.site-footer { flex-wrap: wrap; }.site-footer p { order: 3; width: 100%; }.site-footer a { margin-left: auto; }.lesson-card-grid { grid-template-columns: 1fr; }.lesson-content-card, .lesson-callout { padding: 18px; }.expression-details { grid-template-columns: 1fr; gap: 2px; }.expression-details dd { margin-bottom: 8px; }.dialogue-turn { grid-template-columns: 1fr; gap: 3px; }.fill-input { flex-basis: 100%; } }
@media (max-width: 380px) { .practice-grid { grid-template-columns: 1fr; }.prompt-top { align-items: flex-start; flex-direction: column; gap: 12px; } }