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/* R2 mobile density polish */
@media (max-width: 700px) {
body { line-height: 1.46; }
.guide-topbar { height: 60px; padding: 6px 10px; }
.progress-line { top: 60px; }
.guide-shell { gap: 14px; padding: 10px 10px 36px; }
.guide-hero { padding: 28px 18px 24px; border-radius: 24px; }
.guide-hero h1 { font-size: 34px; line-height: 1.01; letter-spacing: -1.1px; margin: 8px 0 12px; }
.guide-hero > p { font-size: 14px; line-height: 1.4; }
.hero-actions { gap: 8px; margin-top: 18px; }
.hero-stats { gap: 8px; margin-top: 18px; }
.hero-stats article { padding: 10px 11px; }
.hero-stats b { font-size: 21px; }
.quick-start { margin-top: 10px; padding: 14px; border-radius: 18px; }
.quick-title small { line-height: 1.35; }
.quick-flow { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; overflow: visible; padding-bottom: 0; }
.quick-flow i { display: none; }
.quick-flow div { min-width: 0; padding: 8px 10px; }
.quick-flow span { font-size: 10px; line-height: 1.28; }
.chapter { margin-top: 12px; padding: 18px 14px; border-radius: 22px; }
.chapter-head { grid-template-columns: 38px 1fr; gap: 9px; }
.chapter-no { width: 38px; height: 38px; border-radius: 12px; font-size: 16px; }
.chapter-head .eyebrow { font-size: 10px; }
.chapter-head h2 { margin: 2px 0 6px; font-size: 22px; line-height: 1.06; letter-spacing: -0.5px; }
.chapter-head p { font-size: 13px; line-height: 1.38; }
.mode-grid, .compare-grid, .five-formula, .security-grid, .service-grid, .project-grid, .week-grid, .prompt-library, .qa-checklist { grid-template-columns: 1fr; }
.mode-card,
.platform-card,
.do-box,
.market-card,
.client-questions,
.portfolio-box,
.prompt-card,
.prompt-viewer,
.terminal-card,
.know-box,
.rule-banner,
.qa-score,
.final-card { padding: 14px; border-radius: 18px; }
.mode-card { padding: 14px; }
.mode-card h3 { font-size: 19px; margin-top: 4px; }
.mode-card > b { font-size: 11px; }
.mode-card ul { margin: 10px 0; padding-left: 17px; }
.mode-card li, .do-box li { font-size: 11.5px; line-height: 1.34; margin: 4px 0; }
.best-for { padding-top: 8px; font-size: 10.5px; }
.platform-card h3 { margin-bottom: 10px; font-size: 17px; }
.platform-table > div { padding: 7px 5px; font-size: 9.5px; line-height: 1.28; }
.fineprint { font-size: 10px; line-height: 1.35; }
.dev-cycle div,
.debug-flow div,
.compare-grid article,
.five-formula article,
.project-grid article,
.service-grid article,
.security-grid article,
.prompt-library article,
.qa-checklist label { padding: 12px; border-radius: 15px; }
.skill-ladder { gap: 8px; }
.skill-ladder article { grid-template-columns: 34px 1fr; align-items: start; gap: 10px; padding: 11px 12px; }
.skill-ladder article > span { width: 30px; height: 30px; border-radius: 10px; }
.skill-ladder article > div { min-width: 0; }
.skill-ladder b { font-size: 15px; line-height: 1.2; }
.skill-ladder small { font-size: 10px; line-height: 1.3; margin-top: 2px; }
.skill-ladder em { grid-column: 2; justify-self: start; margin-top: 3px; font-size: 8.5px; padding: 4px 7px; }
.week-grid { gap: 8px; }
.week-grid article { padding: 11px 12px 11px 46px; }
.week-grid article > b { left: 11px; top: 11px; width: 26px; height: 26px; border-radius: 9px; }
.week-grid article > span { display: block; font-size: 15px; line-height: 1.2; }
.week-grid p { font-size: 11px; line-height: 1.32; margin: 4px 0 3px; }
.week-grid small { font-size: 9.5px; line-height: 1.28; }
.weekly-formula { margin-top: 10px; padding: 10px; gap: 5px; }
.weekly-formula span { font-size: 8.5px; }
.project-grid article > span, .security-grid article > span { font-size: 22px; }
.project-grid h3, .security-grid h3 { margin: 4px 0; font-size: 17px; line-height: 1.18; }
.project-grid p, .security-grid p { font-size: 11px; line-height: 1.36; margin: 0 0 7px; }
.project-grid b, .project-grid small { font-size: 10px; line-height: 1.3; }
.service-grid article > span { font-size: 8.5px; }
.service-grid h3 { margin: 4px 0; font-size: 16px; line-height: 1.2; }
.service-grid p { font-size: 11px; line-height: 1.35; }
.portfolio-box h3,
.client-questions h3,
.market-head h3,
.know-box h3,
.qa-score strong,
.prompt-viewer-head h3,
.final-card h2 { line-height: 1.12; }
.portfolio-box h3 { font-size: 18px; }
.portfolio-box ol { gap: 4px 12px; margin-top: 10px; }
.portfolio-box li { font-size: 11px; line-height: 1.32; }
.market-card { margin-top: 14px; }
.market-head { gap: 8px; }
.market-head h3 { font-size: 18px; line-height: 1.12; margin: 2px 0; }
.market-head > small { font-size: 8.5px; }
.market-stats { gap: 7px; margin-top: 10px; }
.market-stats article { padding: 10px; border-radius: 13px; }
.market-stats b { font-size: 20px; }
.market-stats span { font-size: 10px; }
.market-stats small, .market-card > p { font-size: 9.5px; line-height: 1.32; }
.before-after { gap: 8px; margin-top: 10px; }
.before-after > div { padding: 12px; border-radius: 15px; }
.before-after b { font-size: 18px; line-height: 1.1; }
.before-after small { font-size: 10px; line-height: 1.28; }
.client-questions { margin-top: 10px; }
.client-questions li { font-size: 11px; line-height: 1.34; margin: 4px 0; }
.know-box p,
.rule-banner,
.done-box small,
.qa-checklist small,
.security-grid p,
.prompt-library b,
.prompt-head span,
.prompt-head b,
.tip { line-height: 1.34; }
.terms-cloud { gap: 8px; }
.terms-cloud span { padding: 6px 10px; font-size: 10px; }
.prompt-library article { gap: 10px; align-items: center; }
.prompt-library article > div { min-width: 0; }
.prompt-library b { font-size: 11px; }
.prompt-library button,
.copy-btn,
.prompt-viewer-head button { padding: 7px 9px; font-size: 10px; }
.prompt-card pre, .prompt-viewer pre, .terminal-card pre { padding: 14px; font-size: 11px; line-height: 1.48; }
.qa-checklist { gap: 7px; }
.qa-checklist label { gap: 8px; }
.qa-checklist b { font-size: 11px; line-height: 1.22; }
.qa-checklist small { font-size: 9.5px; }
.done-box { gap: 8px; padding: 11px 12px; }
.done-box b { font-size: 15px; line-height: 1.18; }
.done-box small { font-size: 10px; }
.to-top { right: 12px; bottom: 14px; width: 42px; height: 42px; font-size: 18px; }
.guide-footer { padding: 2px 12px 28px; }
}
@media (max-width: 420px) {
.guide-hero h1 { font-size: 31px; }
.hero-actions .btn { flex: 1 1 auto; }
.hero-stats { grid-template-columns: 1fr 1fr; }
.market-stats { grid-template-columns: 1fr 1fr; }
.top-action { padding: 7px 9px; font-size: 11px; }
}
/* v0.85 — denser mobile cards + practical market layer */
.version-badge{position:relative;display:inline-flex;align-items:center;margin-bottom:8px;padding:7px 10px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);font-size:11px;font-weight:950;letter-spacing:.08em;text-transform:uppercase;color:#fff}
.core-notice{margin-top:16px;display:grid;gap:3px;padding:14px 16px;border-radius:17px;background:#eef8f5;border-left:5px solid #17a07a}.core-notice b{font-size:13px}.core-notice span{font-size:11px;color:#557182}.market-route{display:grid;gap:8px;margin-top:14px}.market-route article{display:grid;grid-template-columns:38px 1fr;gap:10px;padding:12px 14px;border-radius:17px;background:#f4f8fb;border:1px solid #dfe9ef}.market-route article>span{width:32px;height:32px;display:grid;place-items:center;border-radius:11px;background:#0878ad;color:#fff;font-weight:900}.market-route b,.market-route small,.market-route em{display:block}.market-route b{font-size:15px}.market-route small{font-size:10px;color:#6b8190}.market-route p{margin:5px 0 4px;font-size:11px}.market-route em{font-style:normal;font-size:9px;color:#1e789e;font-weight:850}.real-cases{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:15px}.real-cases article{padding:15px;border-radius:18px;border:1px solid #dfe8ef;background:#fff}.real-cases .case-ru{background:linear-gradient(145deg,#fff,#f4f9ff)}.real-cases .case-world{background:linear-gradient(145deg,#fff,#f2fbf7)}.case-top span{display:block;font-size:9px;text-transform:uppercase;letter-spacing:.09em;color:#1680a7;font-weight:950}.case-top b{display:block;margin-top:3px;font-size:16px;line-height:1.16}.real-cases p{font-size:11px;color:#5e7787;line-height:1.45}.real-cases small{display:block;font-size:10px;line-height:1.4}.real-cases a{display:inline-block;margin-top:9px;color:#075fa8;font-size:10px;font-weight:850;text-decoration:none}.earning-tracks{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-top:14px}.earning-tracks article{padding:14px;border-radius:17px;background:#102a3d;color:#fff}.earning-tracks span{font-size:9px;color:#8fd8ef;text-transform:uppercase;font-weight:900}.earning-tracks h3{font-size:16px;line-height:1.15;margin:4px 0 8px}.earning-tracks ol{margin:0;padding-left:18px}.earning-tracks li{font-size:10px;line-height:1.4;margin:4px 0;color:#d3e5ee}.access-note{margin-top:12px;padding:14px 16px;border-radius:17px;background:#fff8e9}.access-note b{font-size:14px}.access-note p{margin:5px 0 0;font-size:11px;color:#665b3b;line-height:1.45}
@media(max-width:700px){
.five-formula{display:grid;grid-template-columns:1fr;gap:7px;margin-top:14px}
.five-formula article{display:grid;grid-template-columns:34px 1fr;grid-template-rows:auto auto;column-gap:9px;row-gap:1px;padding:10px 12px;border-radius:14px}
.five-formula article>b{grid-row:1 / span 2;width:30px;height:30px;align-self:center;border-radius:10px}
.five-formula h3{margin:0;font-size:15px;line-height:1.18}
.five-formula p{margin:1px 0 0;font-size:10px;line-height:1.28}
.security-grid{gap:7px}
.security-grid article{display:grid;grid-template-columns:34px 1fr;grid-template-rows:auto auto;column-gap:9px;row-gap:1px;padding:10px 12px}
.security-grid article>span{grid-row:1 / span 2;font-size:21px;align-self:start}
.security-grid h3{margin:0;font-size:15px;line-height:1.18}
.security-grid p{margin:2px 0 0;font-size:10.5px;line-height:1.3}
.project-grid{gap:7px}
.project-grid article{display:grid;grid-template-columns:36px 1fr;column-gap:10px;row-gap:2px;padding:11px 12px}
.project-grid article>span{grid-row:1 / span 4;font-size:22px;align-self:start}
.project-grid h3{margin:0;font-size:16px}
.project-grid p{margin:1px 0 4px;font-size:10.5px;line-height:1.32}
.project-grid b,.project-grid small{font-size:9.5px;line-height:1.28}
.market-route article{grid-template-columns:34px 1fr;padding:10px 11px}.market-route b{font-size:14px}.market-route p{font-size:10.5px;line-height:1.34}.market-route small{font-size:9.5px}.market-route em{font-size:8.8px}
.real-cases{grid-template-columns:1fr;gap:8px}.real-cases article{padding:12px}.case-top b{font-size:15px}.real-cases p{font-size:10.5px;line-height:1.36;margin:7px 0}.real-cases small{font-size:9.5px;line-height:1.34}.real-cases a{margin-top:7px}
.earning-tracks{grid-template-columns:1fr;gap:7px}.earning-tracks article{padding:12px}.earning-tracks h3{font-size:15px;margin:3px 0 6px}.earning-tracks li{font-size:10px;margin:3px 0}
.core-notice,.access-note{padding:12px 13px}.core-notice span,.access-note p{font-size:10.5px;line-height:1.35}
}