:root {
  --ink: #f3f0e6;
  --muted: #9d9f92;
  --dim: #676b61;
  --bg: #10130f;
  --panel: #171b15;
  --panel-2: #1d221b;
  --line: rgba(243, 240, 230, .13);
  --lime: #d7f76c;
  --lime-strong: #b8dc40;
  --orange: #f79a63;
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .035;
  z-index: 10;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.7'/%3E%3C/svg%3E");
}

a { color: inherit; text-decoration: none; }
button { font: inherit; }
.page-width { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }

.topbar {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 12px; font-weight: 800; letter-spacing: .18em; }
.brand-mark { display: grid; place-items: center; width: 31px; height: 31px; border: 1px solid var(--lime); color: var(--lime); font-size: 10px; letter-spacing: 0; }
.brand i { color: var(--lime); font-style: normal; margin: 0 4px; }
.topnav { display: flex; align-items: center; gap: 28px; color: var(--muted); font-size: 12px; }
.topnav a:hover { color: var(--ink); }
.local-pill { color: var(--lime); display: inline-flex; align-items: center; gap: 7px; border: 1px solid rgba(215, 247, 108, .25); border-radius: 999px; padding: 6px 10px; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 12px var(--lime); }

.hero { min-height: 575px; padding: 100px 0 88px; display: grid; grid-template-columns: 1.55fr .85fr; gap: 72px; align-items: end; }
.eyebrow, .section-label, .card-kicker { color: var(--lime); font-size: 10px; font-weight: 800; letter-spacing: .21em; margin: 0 0 22px; }
.eyebrow span { color: var(--dim); margin: 0 6px; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 28px; font-size: clamp(50px, 7vw, 92px); line-height: .94; letter-spacing: -.075em; font-weight: 700; }
h1 em { color: var(--lime); font-style: normal; }
.hero-lead { max-width: 590px; color: var(--muted); font-size: 17px; line-height: 1.65; }
.hero-actions { display: flex; align-items: center; gap: 23px; margin-top: 36px; }
.button { border: 1px solid transparent; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 13px; padding: 13px 17px; font-size: 12px; font-weight: 700; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--lime); color: #15200e; }
.button-primary:hover { background: #e5ff8c; }
.button-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.button-ghost:hover { border-color: var(--lime); color: var(--lime); }
.micro-note { color: var(--dim); font-size: 12px; }
.micro-note strong { color: var(--muted); font-weight: 600; }

.progress-card { background: var(--panel); border: 1px solid var(--line); padding: 29px; position: relative; overflow: hidden; }
.progress-card::after { content: ""; position: absolute; width: 175px; height: 175px; right: -82px; top: -75px; border-radius: 50%; border: 1px solid rgba(215,247,108,.16); box-shadow: 0 0 0 18px rgba(215,247,108,.025), 0 0 0 37px rgba(215,247,108,.02); }
.card-kicker { margin-bottom: 20px; }
.progress-number { font-size: 64px; line-height: .9; letter-spacing: -.08em; margin-bottom: 26px; }
.progress-number small { color: var(--dim); font-size: 25px; letter-spacing: -.04em; }
.progress-track, .lesson-progress { background: #2b3127; height: 5px; overflow: hidden; }
.progress-track span, .lesson-progress span { display: block; height: 100%; width: 0; background: var(--lime); transition: width .4s ease; }
.progress-card p { color: var(--muted); font-size: 12px; margin: 14px 0 24px; }
.resume-button, .clear-button { border: 0; background: none; color: var(--ink); cursor: pointer; padding: 0; font-size: 12px; text-align: left; }
.resume-button { display: flex; justify-content: space-between; width: 100%; font-weight: 700; }
.resume-button span { color: var(--lime); font-size: 17px; line-height: .8; }
.clear-button { color: var(--dim); margin-top: 25px; font-size: 11px; }
.clear-button:hover { color: var(--orange); }

.intro-strip { display: grid; grid-template-columns: 1.45fr .75fr .75fr; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 47px 0 50px; gap: 55px; }
.intro-block { min-width: 0; }
.intro-main { padding-right: 40px; border-right: 1px solid var(--line); }
.intro-block h2 { font-size: 28px; letter-spacing: -.04em; margin-bottom: 12px; }
.intro-block p:not(.section-label):not(.big-copy):not(.muted) { color: var(--muted); font-size: 14px; line-height: 1.7; max-width: 510px; margin: 0; }
.big-copy { font-size: 17px; line-height: 1.35; letter-spacing: -.03em; }
.muted { color: var(--dim); font-size: 11px; line-height: 1.5; }
.intro-block .section-label { margin-bottom: 17px; }

.course-section { padding: 110px 0 100px; }
.section-heading { display: flex; justify-content: space-between; gap: 25px; align-items: end; margin-bottom: 35px; }
.section-heading .section-label { margin-bottom: 16px; }
h2 { font-size: 43px; letter-spacing: -.065em; line-height: 1; margin-bottom: 0; }
.section-aside { max-width: 220px; color: var(--muted); font-size: 12px; line-height: 1.6; margin: 0; }
.lesson-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.lesson-card { position: relative; min-height: 220px; background: var(--panel); border: 1px solid var(--line); padding: 25px 26px 24px; cursor: pointer; transition: background .2s ease, border-color .2s ease, transform .2s ease; display: flex; flex-direction: column; }
.lesson-card:hover, .lesson-card.active { background: var(--panel-2); border-color: rgba(215,247,108,.45); transform: translateY(-2px); }
.lesson-card.active { box-shadow: inset 3px 0 0 var(--lime); }
.lesson-top { display: flex; justify-content: space-between; align-items: start; gap: 15px; }
.lesson-index { color: var(--lime); font-size: 11px; font-weight: 800; letter-spacing: .11em; }
.lesson-duration { color: var(--dim); font-size: 11px; }
.lesson-card h3 { font-size: 21px; letter-spacing: -.045em; line-height: 1.15; font-weight: 600; margin: 30px 0 12px; max-width: 460px; }
.lesson-card p { color: var(--muted); font-size: 12px; line-height: 1.6; margin: 0; max-width: 530px; }
.lesson-links, .player-links { display: flex; flex-wrap: wrap; gap: 7px; }
.lesson-links { margin-top: 16px; }
.lesson-links a, .player-links a { color: var(--lime); border: 1px solid rgba(215,247,108,.25); padding: 4px 7px; font-size: 10px; line-height: 1.2; }
.lesson-links a:hover, .player-links a:hover { border-color: var(--lime); background: rgba(215,247,108,.08); }
.lesson-links span, .player-links span { margin-left: 3px; }
.lesson-footer { display: flex; align-items: center; gap: 10px; margin-top: auto; padding-top: 24px; }
.mini-progress { flex: 1; background: #2b3127; height: 3px; }
.mini-progress span { display: block; height: 100%; background: var(--orange); width: 0; }
.lesson-state { color: var(--dim); font-size: 10px; white-space: nowrap; }
.lesson-card.done .lesson-state { color: var(--lime); }

.player-section { border-top: 1px solid var(--line); padding: 95px 0 120px; }
.player-heading { margin-bottom: 28px; }
.player-heading h2 { max-width: 760px; }
.player-shell { background: #080908; border: 1px solid var(--line); }
.video-stage { position: relative; background: #050605; }
video { display: block; width: 100%; max-height: 690px; background: #050605; }
.caption-overlay { position: absolute; z-index: 2; left: 7%; right: 7%; bottom: 12%; display: flex; flex-direction: column; align-items: center; gap: 2px; pointer-events: none; text-align: center; }
.caption-overlay span { display: inline-block; max-width: min(92%, 850px); padding: 3px 10px; background: rgba(0, 0, 0, .78); color: #fff; font-size: clamp(13px, 1.55vw, 22px); line-height: 1.3; text-shadow: 0 1px 2px #000; }
.video-controls { position: relative; z-index: 4; display: flex; align-items: center; gap: 10px; min-height: 48px; padding: 8px 12px; background: #11140f; color: var(--muted); }
.control-button, .fullscreen-button { flex: 0 0 auto; border: 1px solid rgba(255,255,255,.2); border-radius: 4px; background: transparent; color: var(--ink); cursor: pointer; width: 32px; height: 30px; padding: 0; font-size: 14px; line-height: 1; }
.control-button:hover, .fullscreen-button:hover { color: var(--lime); border-color: var(--lime); }
.control-time { flex: 0 0 auto; min-width: 86px; color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.seek-bar { flex: 1 1 auto; min-width: 80px; accent-color: var(--lime); cursor: pointer; }
.volume-bar { width: 72px; accent-color: var(--lime); cursor: pointer; }
.video-stage:fullscreen, .video-stage:-webkit-full-screen { width: 100vw; height: 100vh; display: flex; align-items: center; justify-content: center; }
.video-stage:fullscreen video, .video-stage:-webkit-full-screen video { width: 100%; height: 100%; max-height: none; object-fit: contain; }
.video-stage:fullscreen .caption-overlay, .video-stage:-webkit-full-screen .caption-overlay { bottom: 9%; }
.player-fullscreen-active { overflow: hidden; }
.video-stage.is-fullscreen { position: fixed; inset: 0; z-index: 10000; width: 100vw; height: 100vh; display: flex; align-items: center; justify-content: center; border: 0; }
.video-stage.is-fullscreen video { width: 100%; height: 100%; max-height: none; object-fit: contain; }
.video-stage.is-fullscreen .caption-overlay { bottom: 12%; }
.video-stage.is-fullscreen .video-controls { position: absolute; left: 0; right: 0; bottom: 0; background: linear-gradient(transparent, rgba(0,0,0,.88)); padding: 28px 18px 14px; }
.player-meta { padding: 21px 25px 15px; display: flex; justify-content: space-between; gap: 20px; }
.player-status { color: var(--lime); font-size: 11px; font-weight: 700; margin-bottom: 7px; }
.player-meta p:last-child { color: var(--muted); font-size: 13px; line-height: 1.6; margin: 0; }
.player-links { margin-top: 14px; }
.player-time { color: var(--dim); font-size: 11px; white-space: nowrap; padding-top: 2px; }
.lesson-progress { margin: 0 25px 24px; height: 3px; }

.footer { border-top: 1px solid var(--line); display: flex; justify-content: space-between; padding: 23px 0 35px; color: var(--dim); font-size: 11px; }
.footer p { margin: 0; }
.footer strong { color: var(--muted); letter-spacing: .13em; font-size: 10px; }
.footer a { color: var(--muted); }
.footer a:hover { color: var(--lime); }

@media (max-width: 800px) {
  .page-width, .topbar { width: min(calc(100% - 32px), var(--max)); }
  .topnav a { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 45px; padding: 75px 0 65px; }
  h1 { font-size: clamp(48px, 14vw, 75px); }
  .progress-card { max-width: 500px; }
  .intro-strip { grid-template-columns: 1fr 1fr; gap: 30px; }
  .intro-main { grid-column: 1 / -1; padding: 0 0 28px; border-right: 0; border-bottom: 1px solid var(--line); }
  .course-section { padding: 75px 0; }
  .lesson-grid { grid-template-columns: 1fr; }
  .player-section { padding: 70px 0 85px; }
  .player-heading { align-items: start; flex-direction: column; }
  .player-heading .button { width: 100%; }
}

@media (max-width: 500px) {
  .hero-actions, .footer { align-items: flex-start; flex-direction: column; }
  .intro-strip { grid-template-columns: 1fr; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  h2 { font-size: 36px; }
  .lesson-card { min-height: 245px; }
  .player-meta { flex-direction: column; gap: 10px; }
  .volume-bar { display: none; }
}

/* Aprender en público */
.public-section {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 72px 0 58px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 28px 64px;
  align-items: center;
}
.public-copy h2 { max-width: 500px; margin-bottom: 17px; }
.public-copy > p:last-child { max-width: 520px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }
.profile-card { background: var(--panel); border: 1px solid var(--line); padding: 22px; display: grid; grid-template-columns: auto 1fr; gap: 17px; align-items: center; }
.profile-orb { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 50%; background: var(--lime); color: #17200e; font-size: 20px; font-weight: 800; }
.profile-fields label, .profile-switcher label { display: block; color: var(--dim); font-size: 10px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 8px; }
.profile-input-row { display: flex; gap: 8px; }
.profile-input-row input { width: 100%; min-width: 0; border: 1px solid var(--line); background: #11140f; color: var(--ink); padding: 10px 11px; outline: none; font: inherit; font-size: 12px; }
.profile-input-row input:focus { border-color: var(--lime); }
.compact-button { padding: 10px 13px; white-space: nowrap; }
.profile-note { margin: 8px 0 0; color: var(--dim); font-size: 10px; }
.profile-switcher { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 16px; display: grid; grid-template-columns: 1fr auto; gap: 8px 12px; align-items: center; }
.profile-switcher label { grid-column: 1 / -1; margin: 0; }
.profile-switcher select { width: 100%; border: 1px solid var(--line); background: #11140f; color: var(--ink); padding: 9px 10px; font: inherit; font-size: 12px; }
.text-button { border: 0; background: none; color: var(--lime); cursor: pointer; padding: 8px 0; font-size: 11px; }
.text-button:hover { color: #efffb4; }
.public-stats { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); margin-top: 10px; }
.public-stats > div { background: var(--bg); padding: 15px 18px; display: flex; align-items: baseline; gap: 10px; }
.stat-value { color: var(--lime); font-size: 27px; letter-spacing: -.06em; }
.stat-label { color: var(--muted); font-size: 10px; line-height: 1.3; }

/* Segmentos */
.segment-panel { border-top: 1px solid var(--line); padding: 25px; }
.segment-heading { display: flex; justify-content: space-between; gap: 20px; align-items: end; margin-bottom: 18px; }
.segment-heading .section-label { margin-bottom: 8px; }
.segment-heading h3 { margin: 0; font-size: 18px; letter-spacing: -.04em; }
.segment-counter { color: var(--lime); font-size: 11px; font-variant-numeric: tabular-nums; }
.segment-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.segment-card { min-height: 94px; display: flex; align-items: flex-start; gap: 11px; padding: 13px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); cursor: pointer; text-align: left; transition: border-color .2s ease, background .2s ease, transform .2s ease; }
.segment-card:hover, .segment-card.is-active { border-color: rgba(215,247,108,.55); background: var(--panel-2); transform: translateY(-1px); }
.segment-card.is-done { border-color: rgba(215,247,108,.26); }
.segment-number { color: var(--dim); font-size: 10px; font-weight: 800; letter-spacing: .08em; padding-top: 2px; }
.segment-info { display: flex; min-width: 0; flex: 1; flex-direction: column; gap: 6px; }
.segment-info strong { font-size: 12px; line-height: 1.25; font-weight: 600; }
.segment-info small { color: var(--dim); font-size: 10px; }
.segment-mark { color: var(--lime); font-size: 14px; }

/* Reto */
.challenge-section { border-top: 1px solid var(--line); padding: 100px 0 108px; }
.quiz-panel { min-height: 250px; background: var(--panel); border: 1px solid var(--line); }
.quiz-intro, .quiz-locked, .quiz-result { min-height: 250px; display: grid; grid-template-columns: 108px 1fr; gap: 28px; align-items: center; padding: 36px 40px; }
.quiz-score-mark, .result-number { width: 86px; height: 86px; display: grid; place-items: center; border: 1px solid rgba(215,247,108,.5); color: var(--lime); font-size: 32px; letter-spacing: -.08em; }
.quiz-intro h3, .quiz-locked h3, .quiz-result h3 { max-width: 650px; margin: 0 0 10px; font-size: 24px; letter-spacing: -.05em; line-height: 1.1; }
.quiz-intro p:not(.section-label), .quiz-locked p:not(.section-label), .quiz-result p:not(.section-label) { color: var(--muted); font-size: 13px; line-height: 1.6; max-width: 650px; }
.quiz-intro .button, .quiz-locked .button { margin-top: 9px; }
.quiz-previous { color: var(--lime) !important; font-size: 11px !important; }
.quiz-lock-icon { width: 86px; height: 86px; border: 1px dashed rgba(215,247,108,.35); color: var(--dim); display: grid; place-items: center; font-size: 28px; }
.quiz-question { padding: 28px 32px 30px; }
.quiz-question-top { display: flex; justify-content: space-between; align-items: center; color: var(--dim); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.quiz-progress-dots { display: flex; gap: 5px; }
.quiz-progress-dots i { width: 7px; height: 7px; border-radius: 50%; background: #30372b; }
.quiz-progress-dots i.is-current { background: var(--orange); }
.quiz-progress-dots i.is-done { background: var(--lime); }
.quiz-question h3 { max-width: 800px; margin: 32px 0 20px; font-size: 27px; line-height: 1.15; letter-spacing: -.05em; }
.quiz-options { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; max-width: 850px; }
.quiz-option { display: flex; align-items: center; gap: 11px; min-height: 50px; border: 1px solid var(--line); background: #12150f; color: var(--muted); padding: 11px 13px; cursor: pointer; text-align: left; font-size: 12px; line-height: 1.35; transition: border-color .2s ease, color .2s ease, background .2s ease; }
.quiz-option:hover, .quiz-option.is-selected { border-color: var(--lime); color: var(--ink); background: rgba(215,247,108,.08); }
.quiz-option > span { width: 23px; height: 23px; display: grid; place-items: center; flex: 0 0 auto; border: 1px solid var(--line); color: var(--lime); font-size: 10px; }
.quiz-footer { display: flex; justify-content: space-between; gap: 15px; align-items: center; margin-top: 25px; }
.quiz-footer p { color: var(--orange); margin: 0; font-size: 11px; }
.quiz-result.is-passed { background: linear-gradient(100deg, rgba(215,247,108,.08), transparent 60%); }
.quiz-result.is-failed { background: linear-gradient(100deg, rgba(247,154,99,.07), transparent 60%); }
.result-number { font-size: 43px; }
.result-number small { color: var(--dim); font-size: 20px; letter-spacing: -.04em; }
.quiz-result-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 18px; }

/* Logros */
.achievements-section { border-top: 1px solid var(--line); padding: 100px 0 120px; }
.achievement-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.achievement-card { min-width: 0; display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--line); overflow: hidden; }
.achievement-card.is-premium { border-color: rgba(247,154,99,.42); }
.achievement-art { min-height: 180px; display: grid; place-items: center; padding: 20px; background: radial-gradient(circle at 50% 30%, rgba(215,247,108,.12), transparent 60%), #11140f; }
.achievement-art img { width: min(145px, 70%); height: 145px; object-fit: contain; filter: drop-shadow(0 15px 22px rgba(0,0,0,.35)); }
.achievement-body { padding: 18px 19px 17px; }
.achievement-kind { color: var(--lime); font-size: 9px; font-weight: 800; letter-spacing: .16em; }
.achievement-card.is-premium .achievement-kind { color: var(--orange); }
.achievement-body h3 { margin: 10px 0 8px; font-size: 17px; letter-spacing: -.04em; line-height: 1.2; }
.achievement-body p { min-height: 39px; margin: 0; color: var(--muted); font-size: 11px; line-height: 1.5; }
.achievement-footer { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-top: 18px; padding-top: 12px; border-top: 1px solid var(--line); color: var(--dim); font-size: 10px; }
.share-button { border: 0; background: none; color: var(--lime); cursor: pointer; padding: 0; font-size: 10px; }
.share-button:hover { color: var(--ink); }
.empty-achievements { grid-column: 1 / -1; min-height: 170px; display: flex; align-items: center; gap: 22px; padding: 30px; background: var(--panel); border: 1px dashed var(--line); }
.empty-mark { color: var(--lime); font-size: 39px; }
.empty-achievements h3 { margin: 0 0 6px; font-size: 19px; letter-spacing: -.04em; }
.empty-achievements p:last-child { margin: 0; color: var(--muted); font-size: 12px; }
.toast { position: fixed; z-index: 11000; left: 50%; bottom: 25px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none; background: var(--lime); color: #17200e; padding: 11px 15px; font-size: 12px; font-weight: 700; transition: opacity .25s ease, transform .25s ease; }
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
.capture-modal { position: fixed; inset: 0; z-index: 12000; display: none; place-items: center; padding: 25px; background: rgba(8,9,8,.86); backdrop-filter: blur(9px); }
.capture-modal.is-visible { display: grid; }
.capture-dialog { position: relative; width: min(760px, 100%); max-height: calc(100vh - 50px); overflow: auto; background: var(--panel); border: 1px solid rgba(215,247,108,.35); padding: 28px; box-shadow: 0 25px 80px rgba(0,0,0,.45); }
.capture-dialog h3 { margin: 0 0 16px; font-size: 25px; letter-spacing: -.05em; }
.capture-close { position: absolute; top: 15px; right: 16px; width: 30px; height: 30px; border: 1px solid var(--line); background: transparent; color: var(--ink); cursor: pointer; font-size: 20px; line-height: 1; }
.capture-close:hover { border-color: var(--lime); color: var(--lime); }
.capture-image { display: block; width: 100%; max-height: 58vh; object-fit: contain; background: #10130f; border: 1px solid var(--line); }
.capture-help { margin: 13px 0 17px; color: var(--muted); font-size: 12px; line-height: 1.5; }
.capture-actions { display: flex; flex-wrap: wrap; gap: 9px; }

/* Leaderboard */
.leaderboard-section { border-top: 1px solid var(--line); padding: 100px 0 105px; }
.leaderboard-shell { background: var(--panel); border: 1px solid var(--line); }
.leaderboard-head { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 22px 25px; border-bottom: 1px solid var(--line); }
.leaderboard-head > div:first-child { display: flex; align-items: baseline; gap: 10px; }
.leaderboard-kicker { color: var(--dim); font-size: 9px; font-weight: 800; letter-spacing: .16em; }
.leaderboard-head strong { color: var(--lime); font-size: 34px; letter-spacing: -.08em; }
.leaderboard-head #leaderboardRankLabel { color: var(--muted); font-size: 11px; }
.leaderboard-status { display: flex; align-items: center; gap: 8px; color: var(--dim); font-size: 10px; }
.leaderboard-status .status-dot { flex: 0 0 auto; }
.leaderboard-empty { margin: 0; padding: 22px 25px; color: var(--muted); font-size: 12px; }
.leaderboard-actions { display: flex; align-items: flex-end; flex-direction: column; gap: 11px; }
.auth-button { min-height: 36px; padding: 9px 12px; font-size: 11px; }
.auth-button:disabled { cursor: wait; opacity: .65; }
.signout-button { font-size: 10px; }
.signout-button[hidden], .auth-button[hidden] { display: none; }
.share-leaderboard-button { border: 1px solid rgba(215,247,108,.3); background: transparent; color: var(--lime); cursor: pointer; padding: 8px 10px; font-size: 10px; font-weight: 700; }
.share-leaderboard-button:hover { border-color: var(--lime); background: rgba(215,247,108,.08); }
.share-leaderboard-button:disabled { opacity: .45; cursor: not-allowed; }
.status-dot.is-loading { animation: pulse-dot 1s infinite alternate; }
.status-dot.is-warning { background: var(--orange); box-shadow: 0 0 12px var(--orange); }
@keyframes pulse-dot { from { opacity: .35; } to { opacity: 1; } }
.leaderboard-columns, .leaderboard-row { display: grid; grid-template-columns: 45px minmax(0, 1fr) 110px 100px 80px; gap: 15px; align-items: center; }
.leaderboard-columns { padding: 13px 25px; color: var(--dim); font-size: 9px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.leaderboard-columns span:nth-child(n+3), .leaderboard-row > span:nth-child(n+3), .leaderboard-row > strong { text-align: right; }
.leaderboard-list { border-top: 1px solid var(--line); }
.leaderboard-row { min-height: 62px; padding: 10px 25px; border-bottom: 1px solid rgba(243,240,230,.08); color: var(--muted); font-size: 12px; }
.leaderboard-row.is-current { background: rgba(215,247,108,.08); color: var(--ink); box-shadow: inset 3px 0 0 var(--lime); }
.leaderboard-row.is-outside { margin-top: 10px; border-top: 1px dashed rgba(215,247,108,.38); }
.leaderboard-position { color: var(--dim); font-variant-numeric: tabular-nums; }
.leaderboard-row.is-current .leaderboard-position, .leaderboard-row > strong { color: var(--lime); }
.leaderboard-person { min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.leaderboard-person strong { overflow: hidden; color: var(--ink); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.leaderboard-person small { color: var(--dim); font-size: 10px; }
.leaderboard-footnote { margin: 0; padding: 15px 25px 19px; color: var(--dim); font-size: 10px; }

@media (max-width: 800px) {
  .public-section { grid-template-columns: 1fr; gap: 27px; padding: 63px 0 49px; }
  .public-stats { margin-top: 0; }
  .segment-grid, .achievement-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .challenge-section, .achievements-section, .leaderboard-section { padding: 75px 0 85px; }
  .quiz-intro, .quiz-locked, .quiz-result { padding: 28px; grid-template-columns: 75px 1fr; gap: 19px; }
  .quiz-score-mark, .quiz-lock-icon, .result-number { width: 70px; height: 70px; }
}

@media (max-width: 500px) {
  .public-stats { grid-template-columns: 1fr; }
  .public-stats > div { padding: 12px 15px; }
  .profile-card { grid-template-columns: 1fr; }
  .profile-orb { width: 43px; height: 43px; }
  .segment-panel { padding: 20px 16px; }
  .segment-grid, .achievement-grid, .quiz-options { grid-template-columns: 1fr; }
  .quiz-intro, .quiz-locked, .quiz-result { display: block; padding: 25px 20px; }
  .quiz-score-mark, .quiz-lock-icon, .result-number { margin-bottom: 22px; }
  .quiz-question { padding: 22px 18px 25px; }
  .quiz-question h3 { margin-top: 25px; font-size: 22px; }
  .quiz-footer { align-items: flex-start; flex-direction: column; }
  .empty-achievements { align-items: flex-start; flex-direction: column; }
  .leaderboard-head { align-items: flex-start; flex-direction: column; padding: 20px 16px; }
  .leaderboard-actions { align-items: flex-start; }
  .leaderboard-columns, .leaderboard-row { grid-template-columns: 26px minmax(0, 1fr) 66px 58px; gap: 8px; }
  .leaderboard-columns, .leaderboard-row { padding-left: 16px; padding-right: 16px; }
  .leaderboard-columns span:nth-child(5), .leaderboard-row > strong { display: none; }
  .leaderboard-row { font-size: 10px; }
}