@charset "UTF-8";
:root {
  color-scheme: light;
  --ink: #17342f;
  --ink-soft: #53645f;
  --muted: #87938c;
  --paper: #f7f7f1;
  --paper-deep: #efefe6;
  --white: #fffefa;
  --green: #087f70;
  --green-deep: #075c53;
  --green-light: #e7f2ed;
  --green-pale: #f0f7f3;
  --coral: #df745e;
  --gold: #d5a451;
  --line: #e2e5dc;
  --shadow: 0 24px 70px rgba(28, 63, 53, .09);
  font-family: "Noto Sans Arabic", "Segoe UI", Tahoma, Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { min-width: 320px; background: var(--paper); scroll-behavior: smooth; }
body { min-height: 100vh; margin: 0; position: relative; overflow-x: hidden; background: var(--paper); color: var(--ink); }
button, input { font: inherit; }
button { color: inherit; }
button:focus-visible, input:focus-visible, a:focus-visible { outline: 3px solid rgba(8, 127, 112, .35); outline-offset: 3px; }
.page-glow { position: fixed; pointer-events: none; z-index: 0; border-radius: 50%; filter: blur(1px); }
.page-glow-one { width: 420px; height: 420px; top: -245px; right: 11%; background: radial-gradient(circle, rgba(199, 224, 208, .46), transparent 72%); }
.page-glow-two { width: 390px; height: 390px; bottom: -245px; left: 3%; background: radial-gradient(circle, rgba(241, 214, 188, .33), transparent 70%); }
.site-header, .page-shell, .site-footer { position: relative; z-index: 1; }
.site-header { width: min(1160px, calc(100% - 64px)); min-height: 94px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(29, 68, 58, .09); }
.brand { display: inline-flex; align-items: center; gap: 13px; color: inherit; text-decoration: none; }
.brand-mark { width: 40px; height: 40px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px; padding: 7px; position: relative; border-radius: 13px; transform: rotate(-4deg); background: var(--green); box-shadow: 0 7px 16px rgba(8, 127, 112, .19); }
.brand-mark::before, .brand-mark::after { content: ""; position: absolute; width: 5px; height: 26px; top: 7px; border-block: 1.5px solid rgba(255,255,255,.9); }
.brand-mark::before { right: 3px; border-right: 1.5px solid rgba(255,255,255,.9); border-radius: 0 3px 3px 0; }
.brand-mark::after { left: 3px; border-left: 1.5px solid rgba(255,255,255,.9); border-radius: 3px 0 0 3px; }
.brand-mark span { display: block; border-radius: 2px; background: #d9f0e3; }
.brand-mark span:nth-child(2), .brand-mark span:nth-child(3) { background: #a4d8be; }
.brand-copy { display: flex; flex-direction: column; gap: 1px; }
.brand-copy strong { font-size: 15px; letter-spacing: -.03em; }
.brand-copy small { color: var(--muted); font-size: 11px; }
.header-note { display: flex; align-items: center; gap: 8px; color: #6f7f77; font-size: 12px; }
.header-spark { color: var(--gold); font-size: 19px; }
.page-shell { width: min(1160px, calc(100% - 64px)); min-height: calc(100vh - 164px); margin: 0 auto; padding: 50px 0 66px; }
.intro-screen { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(360px, .96fr); align-items: center; gap: clamp(38px, 7vw, 100px); min-height: 570px; }
.intro-copy { max-width: 575px; padding: 14px 0 28px; }
.eyebrow { display: flex; align-items: center; gap: 9px; color: var(--green); font-size: 12px; font-weight: 700; letter-spacing: .02em; }
.eyebrow-dot, .badge-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 4px rgba(223, 116, 94, .13); }
.eyebrow-divider { color: #c0c8bd; }
h1, h2, h3, p { margin-top: 0; }
.intro-copy h1 { margin: 22px 0 16px; font-size: clamp(42px, 5.5vw, 68px); line-height: 1.25; letter-spacing: -.065em; font-weight: 800; }
.intro-copy h1 em { color: var(--green); font-style: normal; position: relative; }
.intro-copy h1 em::after { content: ""; position: absolute; right: 3px; left: 0; bottom: -5px; height: 8px; border-radius: 50%; border-top: 2px solid rgba(213,164,81,.8); transform: rotate(-1.2deg); }
.intro-lead { max-width: 490px; color: var(--ink-soft); font-size: 15px; line-height: 2; }
.intro-stats { display: flex; align-items: center; gap: 23px; margin: 25px 0 30px; }
.stat-item { display: flex; align-items: baseline; gap: 7px; white-space: nowrap; }
.stat-number { color: var(--green); font-size: 21px; font-weight: 800; font-variant-numeric: tabular-nums; }
.stat-label { color: #7a8880; font-size: 11px; }
.stat-rule { width: 1px; height: 23px; background: #dfe2d8; }
.student-form { max-width: 540px; }
.student-form label { display: block; margin: 0 0 8px; color: #42574f; font-size: 12px; font-weight: 700; }
.name-entry { display: flex; gap: 9px; padding: 6px; border: 1px solid #e0e5dc; border-radius: 14px; background: var(--white); box-shadow: 0 8px 28px rgba(24,59,48,.05); }
.name-entry input { min-width: 0; flex: 1; padding: 0 14px; border: 0; outline: none; border-radius: 9px; background: transparent; color: var(--ink); font-size: 14px; }
.name-entry input::placeholder { color: #a5aea7; }
.name-entry input:focus-visible { outline: 2px solid rgba(8,127,112,.28); outline-offset: -2px; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 11px; padding: 0 20px; border: 1px solid transparent; border-radius: 10px; cursor: pointer; font-size: 13px; font-weight: 700; transition: transform .18s ease, background-color .18s ease, box-shadow .18s ease, border-color .18s ease; }
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0); }
.button-primary { background: var(--green); color: white; box-shadow: 0 7px 15px rgba(8,127,112,.16); }
.button-primary:hover { background: var(--green-deep); box-shadow: 0 10px 19px rgba(8,127,112,.2); }
.start-button { flex: 0 0 auto; }
.start-button span, .confirm-button span, .next-button span { font-size: 18px; line-height: 1; transition: transform .18s ease; }
.button:hover span[aria-hidden="true"] { transform: translateX(-3px); }
.field-help, .inline-error { margin: 8px 3px 0; font-size: 11px; }
.field-help { color: #909c94; }
.inline-error { color: #b54637; font-weight: 700; }
.privacy-note { display: flex; align-items: center; gap: 7px; margin-top: 19px; color: #929c94; font-size: 10px; }
.privacy-lock { color: var(--green); font-size: 15px; }
.intro-art { width: 100%; max-width: 490px; height: 440px; justify-self: center; position: relative; isolation: isolate; border: 1px solid rgba(27,76,62,.06); border-radius: 46% 42% 38% 44% / 39% 41% 46% 45%; background: linear-gradient(145deg, #eef4e9 3%, #e1eee5 48%, #f3efe2 100%); box-shadow: inset 0 0 0 12px rgba(255,255,255,.28), 0 26px 54px rgba(40,83,65,.08); }
.intro-art::before { content: ""; position: absolute; z-index: -1; inset: 25px; border: 1px dashed rgba(8,127,112,.21); border-radius: inherit; }
.art-caption { position: absolute; top: 52px; right: 50px; color: #81948a; font-size: 11px; letter-spacing: .08em; }
.art-orbit { position: absolute; border: 1px solid rgba(8,127,112,.14); border-radius: 50%; }
.orbit-a { width: 270px; height: 270px; top: 78px; left: 99px; }
.orbit-b { width: 338px; height: 338px; top: 44px; left: 65px; border-style: dashed; border-color: rgba(8,127,112,.1); }
.matrix-card { position: absolute; display: flex; align-items: center; gap: 8px; border: 1px solid rgba(35,76,63,.1); border-radius: 15px; background: rgba(255,254,250,.93); box-shadow: 0 15px 35px rgba(31,72,58,.13); }
.matrix-card-back { top: 103px; left: 93px; width: 132px; height: 101px; justify-content: center; transform: rotate(-11deg); opacity: .82; }
.matrix-card-main { width: 202px; height: 148px; top: 148px; left: 135px; justify-content: center; transform: rotate(5deg); }
.matrix-bracket { color: var(--green); font: 300 56px/1 Arial, sans-serif; }
.matrix-art-grid { display: grid; grid-template-columns: repeat(2, 36px); gap: 10px 16px; color: var(--ink); font: 600 21px/1.1 "Segoe UI", Arial, sans-serif; text-align: center; }
.matrix-card-back .matrix-art-grid { grid-template-columns: repeat(2, 22px); gap: 9px 10px; font-size: 15px; }
.matrix-art-grid i { font-style: normal; }
.matrix-card-label { position: absolute; bottom: 13px; left: 15px; color: #89978d; font-size: 10px; }
.art-chip { position: absolute; display: flex; align-items: center; gap: 8px; border: 1px solid rgba(8,127,112,.1); border-radius: 8px; padding: 7px 10px; background: rgba(255,254,250,.93); color: #718279; font-size: 10px; box-shadow: 0 8px 20px rgba(31,72,58,.07); }
.art-chip b { color: var(--green); font: 700 12px Arial, sans-serif; }
.chip-order { right: 44px; bottom: 118px; transform: rotate(-4deg); }
.chip-delta { left: 39px; top: 214px; transform: rotate(-6deg); }
.art-plus { position: absolute; color: var(--coral); font: 300 30px Arial, sans-serif; }
.plus-one { top: 108px; right: 108px; }
.plus-two { bottom: 109px; right: 123px; font-size: 38px; color: var(--gold); }
.art-stamp { position: absolute; bottom: 56px; left: 115px; display: flex; align-items: center; gap: 6px; color: #6c8175; font-size: 10px; }
.art-stamp strong { display: grid; width: 29px; height: 29px; place-items: center; border: 1px solid rgba(8,127,112,.25); border-radius: 50%; color: var(--green); font-size: 13px; }
.art-bottom-note { position: absolute; bottom: 28px; right: 55px; display: flex; align-items: center; gap: 9px; color: #87948a; font-size: 10px; }
.mini-bars { display: flex; align-items: end; gap: 3px; height: 14px; }
.mini-bars i { width: 3px; border-radius: 2px; background: var(--green); }
.mini-bars i:nth-child(1) { height: 7px; opacity: .45; }.mini-bars i:nth-child(2) { height: 11px; opacity: .68; }.mini-bars i:nth-child(3) { height: 14px; }
.site-footer { width: min(1160px, calc(100% - 64px)); min-height: 70px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 16px; border-top: 1px solid rgba(29,68,58,.09); color: #8a958e; font-size: 10px; }
.site-footer b { padding: 0 5px; color: #c7cec7; }
.footer-star { padding-right: 4px; color: var(--gold); }

/* Game journey */
.game-screen { padding-top: 7px; animation: arrive .35s ease both; }
.game-welcome-row { display: flex; align-items: center; justify-content: space-between; margin: 0 0 20px; }
.student-greeting { display: flex; align-items: center; gap: 11px; }
.greeting-mark { display: grid; width: 39px; height: 39px; place-items: center; border: 1px solid #dce8df; border-radius: 12px; background: #edf5ef; color: var(--green); font-size: 16px; font-weight: 800; }
.student-greeting > span:last-child { display: flex; flex-direction: column; gap: 2px; }
.student-greeting small { color: #89978e; font-size: 10px; }
.student-greeting strong { max-width: 220px; overflow: hidden; color: #2c4941; font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.game-badge { display: flex; align-items: center; gap: 9px; padding: 8px 11px; border: 1px solid #e5e7dd; border-radius: 9px; background: rgba(255,254,250,.72); color: #78867d; font-size: 10px; }
.game-badge .badge-dot { width: 6px; height: 6px; background: var(--green); box-shadow: 0 0 0 3px rgba(8,127,112,.1); }
.journey-panel { margin-bottom: 26px; padding: 18px 21px 13px; border: 1px solid #e5e8df; border-radius: 15px; background: rgba(255,254,250,.85); box-shadow: 0 8px 25px rgba(24,59,48,.035); }
.journey-info { display: flex; align-items: center; justify-content: space-between; gap: 15px; margin-bottom: 14px; }
.journey-kicker { margin: 0 0 2px; color: #98a098; font-size: 10px; }
.journey-title { margin: 0; color: #2b463e; font-size: 13px; font-weight: 700; }
.journey-title strong { color: var(--green); font-size: 18px; font-variant-numeric: tabular-nums; }
.journey-title span { color: #909990; font-weight: 500; }
.journey-separator { padding: 0 7px; color: #c4cbc1; }
.score-chip { display: flex; align-items: baseline; gap: 5px; padding: 8px 11px; border: 1px solid #efe7d6; border-radius: 9px; background: #fcf8ed; color: #8e7242; white-space: nowrap; }
.score-star { align-self: center; color: var(--gold); font-size: 13px; }
.score-chip span:nth-child(2) { color: #6d5730; font-size: 17px; font-weight: 800; font-variant-numeric: tabular-nums; }
.score-chip small { color: #a79574; font-size: 9px; }
.progress-track { height: 6px; overflow: hidden; border-radius: 99px; background: #e9eee8; }
.progress-fill { width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #0a8c78, #67b793); transition: width .35s ease; }
.station-dots { display: flex; justify-content: space-between; gap: 7px; margin-top: 9px; }
.station-dot { width: 6px; height: 6px; border-radius: 50%; background: #dfe5dc; transition: background-color .25s ease, transform .25s ease; }
.station-dot.is-done { background: #7ebda1; }
.station-dot.is-current { transform: scale(1.5); background: var(--green); box-shadow: 0 0 0 3px rgba(8,127,112,.12); }
.question-layout { display: grid; grid-template-columns: minmax(0, 1fr) 232px; align-items: start; gap: 21px; }
.question-card { min-width: 0; padding: clamp(23px, 3.2vw, 36px); border: 1px solid #e6e8df; border-radius: 17px; background: var(--white); box-shadow: var(--shadow); }
.question-meta-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.question-type { display: flex; align-items: center; gap: 9px; color: #89958e; font-size: 10px; }
.question-icon { display: grid; width: 28px; height: 28px; place-items: center; border: 1px solid #dce9e0; border-radius: 8px; background: #f2f8f4; color: var(--green); font: 700 15px Georgia, serif; }
.difficulty-label { padding: 6px 10px; border-radius: 6px; background: #f7f3e8; color: #a17e3e; font-size: 9px; }
.question-title { margin: 19px 0 11px; color: #243f37; font-size: clamp(19px, 2.1vw, 24px); line-height: 1.65; letter-spacing: -.025em; }
.question-title:focus, #certificate-heading:focus { outline: 2px solid rgba(8,127,112,.2); outline-offset: 4px; border-radius: 5px; }
.question-visual { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-start; gap: 13px; min-height: 45px; margin: 8px 0 21px; padding: 15px 18px; border-right: 3px solid #9bc9af; border-radius: 8px 0 0 8px; background: #f4f8f3; color: #334b41; font: 500 16px/1.4 "Segoe UI", Arial, sans-serif; }
.question-visual:empty { display: none; }
.math-token { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; }
.matrix-unit { display: inline-flex; align-items: stretch; gap: 3px; color: #203b33; }
.matrix-bracket-side { display: flex; align-items: center; color: var(--green); font: 300 43px/.85 Arial, sans-serif; }
.matrix-grid { display: grid; grid-template-columns: repeat(var(--matrix-columns), minmax(22px, auto)); align-items: center; justify-items: center; gap: 5px 13px; padding: 5px 3px; font: 500 15px/1.25 "Segoe UI", Arial, sans-serif; font-variant-numeric: tabular-nums; }
.matrix-cell { min-width: 16px; text-align: center; }
.answers-heading { display: flex; align-items: center; justify-content: space-between; margin: 0 0 11px; color: #5f7068; font-size: 11px; font-weight: 700; }
.answer-hint { color: #a1aaa2; font-size: 9px; font-weight: 400; }
.answer-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
.answer-button { min-width: 0; min-height: 54px; display: flex; align-items: center; gap: 11px; padding: 9px 12px; border: 1px solid #e7e9e2; border-radius: 10px; background: #fff; text-align: right; cursor: pointer; transition: border-color .18s ease, background-color .18s ease, transform .18s ease, box-shadow .18s ease; }
.answer-button:hover:not(:disabled) { transform: translateY(-1px); border-color: #a8ccba; background: #fbfdf9; }
.answer-button.is-selected { border-color: var(--green); background: var(--green-pale); box-shadow: 0 0 0 2px rgba(8,127,112,.08); }
.answer-button:disabled { cursor: default; }
.answer-letter { flex: 0 0 25px; width: 25px; height: 25px; display: grid; place-items: center; border: 1px solid #e6e8e1; border-radius: 7px; background: #f7f8f4; color: #7d8a82; font-size: 10px; font-weight: 700; }
.answer-button.is-selected .answer-letter { border-color: var(--green); background: var(--green); color: #fff; }
.answer-content { min-width: 0; display: flex; align-items: center; color: #374e44; font-size: 12px; line-height: 1.5; }
.answer-content .matrix-grid { gap: 3px 8px; font-size: 12px; }
.answer-content .matrix-bracket-side { font-size: 35px; }
.answer-button.is-correct { border-color: #77b895; background: #eef8f1; }
.answer-button.is-wrong { border-color: #e7a69b; background: #fff2ef; }
.answer-button.is-reveal { border-color: #77b895; background: #eef8f1; }
.selection-note { margin: 9px 0 0; color: #b34e40; font-size: 10px; }
.answer-feedback { display: flex; gap: 11px; margin-top: 14px; padding: 13px 14px; border: 1px solid #dfe9de; border-radius: 10px; background: #f3f8f2; }
.answer-feedback.feedback-correct { border-color: #cbe6d3; background: #f1f8f2; }
.answer-feedback.feedback-wrong { border-color: #f0d7cf; background: #fff6f2; }
.feedback-symbol { flex: 0 0 22px; width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; background: #d7eddf; color: var(--green); font-size: 13px; font-weight: 800; }
.feedback-wrong .feedback-symbol { background: #f9e3dc; color: #ba5b47; }
.answer-feedback strong { color: #376050; font-size: 11px; }
.feedback-wrong strong { color: #9e4b3d; }
.answer-feedback p { margin: 4px 0 0; color: #63746b; font-size: 11px; line-height: 1.8; }
.question-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 20px; padding-top: 15px; border-top: 1px solid #eef0e9; }
.no-penalty { color: #9aa39b; font-size: 9px; }
.no-penalty span { color: var(--gold); padding-left: 4px; }
.confirm-button, .next-button { min-height: 43px; padding: 0 15px; font-size: 11px; }
.side-note { padding: 19px 17px 16px; border: 1px solid #e6e6d8; border-radius: 14px; background: #f2f3e9; color: #526259; }
.side-note-top { display: flex; align-items: center; gap: 8px; color: var(--green); font-size: 10px; font-weight: 700; }
.note-spark { display: grid; width: 23px; height: 23px; place-items: center; border-radius: 7px; background: #e1eadb; color: var(--gold); font-size: 15px; }
.side-note h3 { margin: 14px 0 8px; color: #3a5147; font-size: 15px; }
.side-note p { min-height: 76px; margin: 0; color: #78857a; font-size: 11px; line-height: 1.9; }
.note-divider { height: 1px; margin: 15px 0 11px; background: #e1e3d8; }
.note-bottom { display: flex; align-items: center; gap: 8px; color: #929b8e; font-size: 9px; line-height: 1.6; }
.note-matrix-icon { color: var(--green); font: 12px Arial, sans-serif; white-space: nowrap; }

/* Completion & printable certificate */
.certificate-screen { animation: arrive .35s ease both; }
.completion-banner { display: flex; align-items: center; gap: 14px; margin: 0 0 22px; }
.completion-icon { width: 45px; height: 45px; flex: 0 0 45px; display: grid; place-items: center; border: 1px solid #eadfbe; border-radius: 14px; background: #fbf4df; color: var(--gold); font-size: 22px; }
.completion-kicker { margin: 0 0 3px; color: var(--green); font-size: 10px; font-weight: 700; }
.completion-banner h1 { margin: 0; color: #234239; font-size: 22px; letter-spacing: -.03em; }
.completion-banner h1 span { color: var(--green); }
.completion-banner p:last-child { margin: 4px 0 0; color: #87938a; font-size: 11px; }
.certificate { width: min(850px, 100%); min-height: 475px; margin: 0 auto; padding: 29px 42px 23px; position: relative; overflow: hidden; border: 1px solid #d9d8c9; border-radius: 15px; background: #fffef9; box-shadow: 0 18px 48px rgba(30,65,53,.09); }
.certificate::before, .certificate::after { content: ""; position: absolute; z-index: 0; width: 200px; height: 200px; border: 1px solid rgba(8,127,112,.09); border-radius: 50%; pointer-events: none; }
.certificate::before { top: -120px; left: -86px; box-shadow: 0 0 0 13px rgba(8,127,112,.025), 0 0 0 27px rgba(8,127,112,.025); }
.certificate::after { right: -109px; bottom: -133px; box-shadow: 0 0 0 13px rgba(213,164,81,.03), 0 0 0 27px rgba(213,164,81,.03); }
.certificate-frame { position: absolute; inset: 10px; z-index: 0; border: 1px solid #e8e5d7; border-radius: 9px; pointer-events: none; }
.certificate-topline, .certificate-body, .certificate-signatures, .certificate-footer { position: relative; z-index: 1; }
.certificate-topline { display: flex; align-items: center; justify-content: space-between; color: #718078; font-size: 10px; }
.certificate-topline b { padding: 0 5px; color: #c7aa6a; }
.certificate-mark { display: grid; width: 31px; height: 31px; grid-template-columns: repeat(2, 1fr); gap: 3px; padding: 6px; border-radius: 9px; background: var(--green); transform: rotate(-4deg); }
.certificate-mark i { border-radius: 2px; background: #d9f0e3; }
.certificate-mark i:nth-child(2), .certificate-mark i:nth-child(3) { background: #9fd5ba; }
.certificate-seal { padding: 6px 9px; border: 1px solid #e8dfc5; border-radius: 999px; background: #fbf7ea; color: #9b7c46; font-size: 9px; }
.certificate-body { padding: 23px 0 8px; text-align: center; }
.certificate-overline { margin: 0 0 2px; color: var(--green); font-size: 11px; font-weight: 700; letter-spacing: .08em; }
.certificate-body h2 { margin: 0; color: #23463a; font-size: clamp(29px, 4vw, 39px); letter-spacing: -.05em; }
.certificate-intro { margin: 6px 0 0; color: #869289; font-size: 11px; }
.certificate-student-name { display: inline-block; min-width: 260px; max-width: 90%; margin: 6px auto 0; padding: 0 22px 7px; border-bottom: 1px solid #b9c9bb; color: #087f70; font-size: clamp(21px, 3vw, 29px); font-weight: 800; overflow-wrap: anywhere; }
.certificate-rule { display: flex; align-items: center; justify-content: center; gap: 10px; width: min(240px, 80%); margin: 13px auto 10px; color: var(--gold); }
.certificate-rule span { width: 100%; height: 1px; background: linear-gradient(90deg, transparent, #d7c497); }
.certificate-rule span:last-child { transform: rotate(180deg); }
.certificate-rule i { font-style: normal; font-size: 12px; }
.certificate-description { margin: 0; color: #66766e; font-size: 11px; line-height: 1.85; }
.certificate-description strong { color: #315e4c; }
.certificate-result { display: flex; align-items: center; justify-content: center; gap: 12px; margin: 13px auto 0; color: #89948b; font-size: 10px; }
.certificate-result strong { display: flex; align-items: baseline; color: var(--green); font-size: 20px; }
.certificate-result strong small { color: #a0a99f; font-size: 10px; }
.certificate-date { color: #a0a79f; }
.certificate-signatures { display: flex; align-items: flex-end; justify-content: space-around; margin: 15px 30px 0; padding-top: 12px; border-top: 1px solid #eeece2; }
.signature { min-width: 145px; display: flex; flex-direction: column; align-items: center; gap: 3px; }
.signature strong { min-width: 122px; padding: 0 8px 4px; border-bottom: 1px solid #b9c9bb; color: #415d4f; font-size: 13px; text-align: center; }
.signature span { color: #87948b; font-size: 9px; }
.certificate-center-mark { color: #b4975a; font: italic 700 15px/1 Georgia, serif; letter-spacing: .07em; }
.certificate-center-mark span { padding: 0 4px; color: #c2cfc3; font-weight: 400; }
.certificate-footer { display: flex; justify-content: space-between; margin-top: 17px; color: #a0a69c; font-size: 8px; }
.certificate-footer b { padding: 0 4px; color: #cab881; }
.certificate-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin: 19px auto 0; }
.certificate-actions .button { min-height: 46px; }
.button-icon { font-size: 15px; }
.button-secondary { border-color: #dfe5dd; background: rgba(255,254,250,.76); color: #64746a; }
.button-secondary:hover { border-color: #a8caba; background: #fff; }
.print-tip { margin: 10px auto 0; color: #9aa39b; font-size: 9px; text-align: center; }
@keyframes arrive { from { opacity: 0; transform: translateY(9px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 900px) {
  .site-header, .page-shell, .site-footer { width: min(760px, calc(100% - 44px)); }
  .intro-screen { grid-template-columns: minmax(0, 1fr) minmax(280px, .78fr); gap: 28px; }
  .intro-art { height: 360px; transform: scale(.92); }
  .orbit-a { width: 240px; height: 240px; top: 60px; left: 65px; }
  .orbit-b { width: 294px; height: 294px; top: 33px; left: 38px; }
  .matrix-card-back { top: 80px; left: 55px; }
  .matrix-card-main { top: 125px; left: 90px; }
  .chip-order { right: 16px; bottom: 87px; }
  .chip-delta { left: 12px; top: 185px; }
  .art-stamp { bottom: 46px; left: 70px; }
  .art-bottom-note { right: 30px; bottom: 20px; }
  .question-layout { grid-template-columns: minmax(0, 1fr) 205px; gap: 14px; }
  .question-card { padding: 24px; }
}
@media (max-width: 680px) {
  html { scroll-behavior: auto; }
  .site-header, .page-shell, .site-footer { width: calc(100% - 34px); }
  .site-header { min-height: 75px; }
  .header-note { font-size: 10px; }
  .brand-mark { width: 36px; height: 36px; }
  .brand-copy strong { font-size: 13px; }
  .brand-copy small { font-size: 9px; }
  .page-shell { min-height: calc(100vh - 135px); padding: 26px 0 38px; }
  .intro-screen { display: flex; flex-direction: column; align-items: stretch; gap: 15px; min-height: unset; }
  .intro-copy { padding: 8px 0 0; }
  .intro-copy h1 { margin: 18px 0 10px; font-size: clamp(39px, 11vw, 54px); }
  .intro-lead { font-size: 13px; line-height: 1.9; }
  .intro-stats { gap: 12px; margin: 18px 0 22px; }
  .stat-item { flex-direction: column; gap: 0; white-space: normal; }
  .stat-number { font-size: 19px; }
  .stat-label { font-size: 9px; }
  .stat-rule { height: 29px; }
  .name-entry { gap: 5px; padding: 5px; }
  .name-entry input { padding: 0 9px; font-size: 12px; }
  .start-button { min-height: 44px; gap: 6px; padding: 0 12px; font-size: 10px; }
  .privacy-note { margin-top: 12px; }
  .intro-art { width: 100%; max-width: 390px; height: 290px; margin-top: -4px; transform: none; }
  .intro-art::before { inset: 17px; }
  .art-caption { top: 33px; right: 31px; font-size: 9px; }
  .orbit-a { width: 205px; height: 205px; top: 40px; left: calc(50% - 102px); }
  .orbit-b { width: 252px; height: 252px; top: 18px; left: calc(50% - 126px); }
  .matrix-card-back { width: 100px; height: 77px; top: 53px; left: calc(50% - 114px); }
  .matrix-card-main { width: 154px; height: 115px; top: 85px; left: calc(50% - 69px); }
  .matrix-bracket { font-size: 42px; }
  .matrix-art-grid { grid-template-columns: repeat(2, 27px); gap: 8px 11px; font-size: 17px; }
  .matrix-card-back .matrix-art-grid { grid-template-columns: repeat(2, 17px); gap: 7px 8px; font-size: 12px; }
  .matrix-card-label { bottom: 9px; left: 11px; font-size: 8px; }
  .art-chip { padding: 5px 7px; font-size: 8px; }
  .chip-order { right: 24px; bottom: 71px; }
  .chip-delta { left: 22px; top: 144px; }
  .plus-one { top: 72px; right: 75px; font-size: 23px; }
  .plus-two { right: 80px; bottom: 67px; }
  .art-stamp { bottom: 31px; left: 49px; gap: 4px; font-size: 8px; }
  .art-stamp strong { width: 24px; height: 24px; font-size: 11px; }
  .art-bottom-note { right: 24px; bottom: 13px; font-size: 8px; }
  .site-footer { min-height: 60px; font-size: 8px; }
  .site-footer span:last-child { text-align: left; }
  .game-screen { padding-top: 2px; }
  .game-welcome-row { margin-bottom: 14px; }
  .student-greeting { gap: 8px; }
  .greeting-mark { width: 34px; height: 34px; }
  .student-greeting strong { max-width: 145px; font-size: 11px; }
  .game-badge { padding: 7px 8px; font-size: 8px; }
  .journey-panel { margin-bottom: 15px; padding: 13px 13px 10px; }
  .journey-info { margin-bottom: 11px; }
  .journey-title { font-size: 11px; }
  .journey-title strong { font-size: 15px; }
  .journey-separator { padding: 0 3px; }
  .score-chip { gap: 3px; padding: 6px 7px; }
  .score-chip small { font-size: 8px; }
  .station-dots { gap: 4px; margin-top: 8px; }
  .station-dot { width: 5px; height: 5px; }
  .question-layout { display: flex; flex-direction: column; gap: 11px; }
  .question-card { width: 100%; padding: 19px 15px 15px; border-radius: 14px; }
  .question-title { margin: 14px 0 8px; font-size: 18px; }
  .question-visual { gap: 9px; margin: 7px 0 15px; padding: 12px 11px; font-size: 14px; }
  .matrix-grid { grid-template-columns: repeat(var(--matrix-columns), minmax(17px, auto)); gap: 4px 8px; font-size: 13px; }
  .matrix-bracket-side { font-size: 37px; }
  .answer-options { gap: 7px; }
  .answer-button { min-height: 51px; gap: 7px; padding: 7px; }
  .answer-letter { flex-basis: 22px; width: 22px; height: 22px; font-size: 9px; }
  .answer-content { font-size: 10px; }
  .answer-content .matrix-grid { gap: 2px 5px; font-size: 10px; }
  .answer-content .matrix-bracket-side { font-size: 30px; }
  .question-footer { align-items: flex-end; gap: 8px; margin-top: 15px; padding-top: 12px; }
  .no-penalty { max-width: 120px; font-size: 8px; line-height: 1.6; }
  .confirm-button, .next-button { min-height: 41px; padding: 0 10px; font-size: 9px; white-space: nowrap; }
  .side-note { width: 100%; padding: 12px 14px; }
  .side-note-top { font-size: 9px; }
  .side-note h3 { margin: 8px 0 4px; font-size: 13px; }
  .side-note p { min-height: unset; font-size: 10px; }
  .note-divider { margin: 9px 0 7px; }
  .note-bottom { font-size: 8px; }
  .completion-banner { gap: 9px; margin-bottom: 14px; }
  .completion-icon { width: 38px; height: 38px; flex-basis: 38px; }
  .completion-banner h1 { font-size: 18px; }
  .completion-banner p:last-child { font-size: 9px; }
  .certificate { min-height: 0; padding: 21px 19px 17px; border-radius: 11px; }
  .certificate-topline { font-size: 8px; }
  .certificate-mark { width: 27px; height: 27px; padding: 5px; }
  .certificate-seal { padding: 5px 7px; font-size: 8px; }
  .certificate-body { padding-top: 18px; }
  .certificate-overline { font-size: 9px; }
  .certificate-body h2 { font-size: 29px; }
  .certificate-intro { font-size: 9px; }
  .certificate-student-name { min-width: 180px; padding: 0 12px 5px; font-size: 22px; }
  .certificate-description { font-size: 9px; }
  .certificate-result { flex-wrap: wrap; gap: 7px; margin-top: 11px; font-size: 8px; }
  .certificate-result strong { font-size: 18px; }
  .certificate-signatures { margin: 12px 0 0; padding-top: 11px; }
  .signature { min-width: 105px; }
  .signature strong { min-width: 96px; font-size: 11px; }
  .signature span { font-size: 8px; }
  .certificate-footer { margin-top: 13px; font-size: 7px; }
  .certificate-actions { gap: 7px; margin-top: 14px; }
  .certificate-actions .button { min-height: 42px; padding: 0 12px; font-size: 10px; }
  .print-tip { font-size: 8px; }
}
@media (max-width: 380px) {
  .site-header, .page-shell, .site-footer { width: calc(100% - 26px); }
  .header-note { max-width: 118px; font-size: 9px; }
  .intro-stats { gap: 9px; }
  .stat-label { font-size: 8px; }
  .game-badge { max-width: 140px; }
  .answer-options { grid-template-columns: 1fr; }
  .answer-button { min-height: 45px; }
  .certificate { padding-inline: 15px; }
  .signature { min-width: 88px; }
  .signature strong { min-width: 82px; }
  .certificate-center-mark { font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}
@media print {
  @page { size: A4 landscape; margin: 10mm; }
  html, body { width: 100%; min-height: 0; background: #fff !important; }
  body * { visibility: hidden !important; }
  #certificate-screen, #certificate-screen * { visibility: visible !important; }
  #certificate-screen { display: block !important; position: fixed; inset: 0; width: 100%; min-height: 0; padding: 0; background: #fff !important; }
  .completion-banner, .certificate-actions, .print-tip { display: none !important; }
  #certificate { width: 100%; height: 178mm; min-height: 0; margin: 0; padding: 12mm 18mm 8mm; border: 1px solid #cfcebf; border-radius: 0; box-shadow: none; break-inside: avoid; }
  .certificate-body { padding-top: 13mm; }
  .certificate-body h2 { font-size: 38px; }
  .certificate-student-name { font-size: 27px; }
  .certificate-description { font-size: 13px; }
  .certificate-result { margin-top: 7mm; }
  .certificate-signatures { margin-top: 11mm; }
  .certificate-footer { margin-top: 9mm; }
  .certificate-frame { inset: 6px; border-color: #dcd8c8; }
  * { -webkit-print-color-adjust: exact !important; print-color-adjust: exact !important; }
}