/* V3 Beginner First — 2026-03-14 */
.beginner-heading{text-align:center;max-width:780px;margin-inline:auto}
.beginner-heading h2{max-width:760px;margin-left:auto;margin-right:auto;text-wrap:balance}
.beginner-heading p:not(.section-kicker){max-width:720px;margin-left:auto;margin-right:auto}
.beginner-rule-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:26px}
.beginner-rule-card,.form-card,.summary-card{border:1px solid var(--line,#dfe5e2);background:var(--surface,#fff);padding:24px 20px;text-align:center;border-radius:18px;min-width:0}
.big-form{font-size:36px;line-height:1;font-weight:900;letter-spacing:.02em;margin-bottom:12px}
.big-form.small{font-size:28px;margin:0}
.beginner-rule-card h3{font-size:20px;line-height:1.35;margin:0 0 9px;text-wrap:balance}
.plain-rule{font-size:15px;line-height:1.8;margin:0 auto 16px;max-width:22em}
.mini-scene{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;padding:11px 10px;border-radius:12px;background:color-mix(in srgb,currentColor 5%,transparent);font-size:14px;font-weight:800}
.scene-arrow{opacity:.55}.tiny-term{margin:12px 0 0;font-size:12px;line-height:1.65;opacity:.66}
.beginner-keyline{margin:22px auto 0;max-width:860px;padding:17px 20px;border:1px solid var(--line,#dfe5e2);border-radius:16px;text-align:center;font-size:16px;line-height:1.75;background:var(--surface,#fff)}
.scene-stack{display:grid;gap:16px;max-width:900px;margin:26px auto 0}.scene-card{display:grid;grid-template-columns:54px minmax(0,1fr);gap:18px;border:1px solid var(--line,#dfe5e2);border-radius:18px;padding:22px;background:var(--surface,#fff);min-width:0}.scene-number{font-size:12px;font-weight:900;opacity:.45;padding-top:7px}.scene-main{min-width:0}.scene-title{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:18px;margin-bottom:14px}.form-pill{display:inline-flex;align-items:center;justify-content:center;min-width:42px;padding:5px 10px;border:1px solid currentColor;border-radius:999px;font-size:16px;line-height:1;font-weight:900}.jp-example{font-size:21px;line-height:2;margin:0;text-wrap:pretty;overflow-wrap:anywhere}.zh-example{font-size:15px;line-height:1.75;margin:4px 0 14px;opacity:.78}.why-box,.wrong-note{margin:10px 0 0;padding:13px 15px;border-radius:12px;line-height:1.75;font-size:14px}.why-box{background:color-mix(in srgb,var(--accent,#3d6d62) 7%,transparent)}.wrong-note{border:1px dashed var(--line,#dfe5e2);opacity:.88}.dialogue-mini{display:grid;gap:8px;margin-bottom:8px}.dialogue-mini p{margin:0;font-size:18px;line-height:1.9}.speaker{display:inline-flex;width:28px;height:28px;align-items:center;justify-content:center;border-radius:50%;border:1px solid currentColor;font-size:12px;font-weight:900;margin-right:6px}
.pair-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:26px}.pair-card{border:1px solid var(--line,#dfe5e2);border-radius:18px;padding:22px;background:var(--surface,#fff);min-width:0}.pair-card.pair-ba{grid-column:1/-1;max-width:760px;width:100%;justify-self:center}.pair-card h3{text-align:center;font-size:20px;margin:0 0 12px}.pair-question{text-align:center;line-height:1.75;margin:0 0 18px}.pair-example{padding:14px 15px;border-radius:12px;background:color-mix(in srgb,var(--accent,#3d6d62) 5%,transparent);margin-top:10px}.pair-example p{margin:0 0 5px;line-height:1.8;font-size:16px;overflow-wrap:anywhere}.pair-example span{font-size:13px;line-height:1.6;opacity:.76}.plain-note{text-align:center;font-size:14px;line-height:1.75;margin:14px 0 0}
.form-stack{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:26px}.form-card{text-align:left}.form-card-head{display:flex;align-items:center;gap:12px;justify-content:center;font-size:18px;text-align:center;margin-bottom:14px}.form-examples{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-bottom:14px}.form-examples span{padding:7px 10px;border:1px solid var(--line,#dfe5e2);border-radius:10px;font-size:13px;background:color-mix(in srgb,var(--accent,#3d6d62) 4%,transparent)}.form-card>p{font-size:14px;line-height:1.8;margin:8px 0}.form-card .tiny-term{text-align:center}
.mistake-list{display:grid;gap:12px;max-width:860px;margin:26px auto 0}.mistake-card{display:grid;grid-template-columns:42px minmax(0,1fr);gap:15px;align-items:start;border:1px solid var(--line,#dfe5e2);border-radius:16px;padding:18px;background:var(--surface,#fff)}.mistake-no{display:flex;width:34px;height:34px;border-radius:50%;align-items:center;justify-content:center;background:color-mix(in srgb,var(--accent,#3d6d62) 11%,transparent);font-weight:900}.mistake-card h3{font-size:17px;margin:2px 0 6px}.mistake-card p{font-size:14px;line-height:1.75;margin:0}
.jlpt-steps{list-style:none;padding:0;max-width:820px;margin:26px auto;display:grid;gap:10px}.jlpt-steps li{display:grid;grid-template-columns:42px minmax(0,1fr);gap:14px;align-items:start;padding:15px 17px;border:1px solid var(--line,#dfe5e2);border-radius:14px;background:var(--surface,#fff)}.jlpt-steps li>span{display:flex;width:32px;height:32px;border-radius:50%;align-items:center;justify-content:center;font-weight:900;background:color-mix(in srgb,var(--accent,#3d6d62) 10%,transparent)}.jlpt-steps strong{font-size:15px}.jlpt-steps p{font-size:13px;line-height:1.6;margin:4px 0 0;opacity:.76}.beginner-practice{max-width:820px;margin-left:auto;margin-right:auto}.beginner-practice .question-jp{font-size:18px;line-height:2;text-align:center}.beginner-practice .question-zh{text-align:center}.practice-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.practice-options button{min-height:48px}.answer-explain{margin-top:14px;padding:15px;border-radius:12px;background:color-mix(in srgb,var(--accent,#3d6d62) 6%,transparent);line-height:1.75}.answer-explain p{margin:6px 0}
.summary-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:26px}.summary-card{display:flex;flex-direction:column;align-items:center;gap:8px}.summary-card strong{font-size:17px;line-height:1.45;text-wrap:balance}.summary-card p{font-size:13px;line-height:1.55;margin:0;opacity:.72}.summary-card em{font-style:normal;font-size:13px;font-weight:800;padding-top:4px}.final-memory{text-align:center;margin:22px auto 0;max-width:700px;border:1px solid var(--line,#dfe5e2);border-radius:16px;padding:18px;background:var(--surface,#fff)}.final-memory p{margin:3px 0;font-size:16px;line-height:1.7}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:20px}.related-grid a{display:flex;justify-content:space-between;gap:12px;align-items:center;border:1px solid var(--line,#dfe5e2);padding:14px 16px;border-radius:12px;text-decoration:none;min-width:0}.related-grid strong{overflow-wrap:anywhere}.related-grid span{white-space:nowrap;font-size:12px;opacity:.6}
.tone-to{--local-tone:#37745f}.tone-ba{--local-tone:#496aa7}.tone-tara{--local-tone:#a3663d}.tone-nara{--local-tone:#755a9f}.tone-to .big-form,.tone-to .form-pill{color:var(--local-tone)}.tone-ba .big-form,.tone-ba .form-pill{color:var(--local-tone)}.tone-tara .big-form,.tone-tara .form-pill{color:var(--local-tone)}.tone-nara .big-form,.tone-nara .form-pill{color:var(--local-tone)}
@media(max-width:980px){.beginner-rule-grid,.summary-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.pair-grid,.form-stack{grid-template-columns:1fr}.pair-card.pair-ba{grid-column:auto;max-width:none}.related-grid{grid-template-columns:1fr}}
@media(max-width:680px){
  .comparison-head{text-align:center}.comparison-head .meaning{max-width:32em;margin-left:auto;margin-right:auto;text-wrap:balance}.comparison-head .article-tools{justify-content:center}.comparison-head .meta{justify-content:center}
  .section{overflow:visible}.section-heading,.beginner-heading{text-align:center}.section-heading h2,.beginner-heading h2{font-size:clamp(22px,7vw,29px);line-height:1.3;text-wrap:balance}.section-heading p,.beginner-heading p{text-align:center}
  .beginner-rule-grid,.summary-cards{grid-template-columns:1fr;gap:12px}.beginner-rule-card{padding:20px 16px}.big-form{font-size:34px}.beginner-rule-card h3{font-size:20px}.plain-rule{font-size:15px}
  .scene-card{grid-template-columns:1fr;gap:8px;padding:18px 15px;text-align:center}.scene-number{padding:0}.scene-title{justify-content:center}.jp-example{font-size:19px;line-height:2;text-align:center}.zh-example{text-align:center}.why-box,.wrong-note{text-align:left}.dialogue-mini{text-align:left;max-width:100%;overflow-wrap:anywhere}.dialogue-mini p{font-size:17px}
  .pair-card,.form-card{padding:18px 15px}.pair-example{text-align:left}.pair-question{text-align:center}.form-card{text-align:center}.form-card>p{text-align:left}.form-examples{flex-direction:column;align-items:stretch}.form-examples span{text-align:center;width:100%}
  .mistake-card,.jlpt-steps li{grid-template-columns:36px minmax(0,1fr);gap:11px;padding:15px 13px}.mistake-card{text-align:left}.mistake-no,.jlpt-steps li>span{width:30px;height:30px}
  .practice-options{grid-template-columns:1fr}.beginner-practice .question-jp{font-size:17px;line-height:2}.answer-explain{text-align:left}
  .related-grid a{align-items:flex-start;flex-direction:column;text-align:center}.related-grid span{white-space:normal}.related-grid a>*{width:100%}
  .beginner-keyline,.final-memory{padding:16px 14px}.beginner-keyline{display:grid;gap:4px}
}
@media(max-width:390px){.beginner-rule-card,.scene-card,.pair-card,.form-card,.summary-card{border-radius:14px}.scene-title{font-size:17px}.jp-example{font-size:18px}.section-kicker{font-size:11px}.form-pill{font-size:15px;min-width:40px}}

/* Batch 1 review helpers */
.topic-three-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.topic-four-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.topic-note{margin:16px 0 0;padding:14px 16px;border-left:3px solid #6a8ea3;background:rgba(255,255,255,.6);line-height:1.85;color:#34423d}
.topic-note strong{color:#17211f}
.topic-list{margin:12px 0 0;padding-left:1.15em;color:#3f4e49;line-height:1.9}
.topic-list li+li{margin-top:5px}
.topic-formula{display:block;margin-top:8px;font-size:15px;font-weight:800;color:#284c5d;line-height:1.8}
.topic-chip-row{display:flex;gap:7px;flex-wrap:wrap;margin-top:10px}
.topic-chip{display:inline-flex;align-items:center;min-height:30px;padding:4px 9px;border:1px solid #cad6d1;background:#fff;font-size:13px;font-weight:800;color:#36514a}
.topic-big-example{margin:12px 0 5px;font-size:22px;line-height:2;color:#101b18;font-weight:720}
.topic-big-example rt{font-size:.58em}
.topic-zh{margin:0;color:#52615c;font-size:15.5px;line-height:1.8}
.topic-contrast{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:center;margin-top:14px}
.topic-contrast .side{padding:12px 13px;border:1px solid #d5ded9;background:#fff;min-width:0}
.topic-contrast .arrow{font-weight:900;color:#6e7e78}
.topic-contrast strong{display:block;margin-bottom:4px;color:#15201d}
html[data-theme="dark"] .topic-note{background:#1b2522;color:#c8d3ce;border-color:#55788b}
html[data-theme="dark"] .topic-note strong,html[data-theme="dark"] .topic-big-example,html[data-theme="dark"] .topic-contrast strong{color:#eef4f1}
html[data-theme="dark"] .topic-list,html[data-theme="dark"] .topic-zh{color:#bdc9c4}
html[data-theme="dark"] .topic-chip,html[data-theme="dark"] .topic-contrast .side{background:#1b2522;border-color:#36443f;color:#cbd8d2}
@media(max-width:820px){.topic-three-grid,.topic-four-grid{grid-template-columns:1fr}.topic-big-example{font-size:21px}.topic-contrast{grid-template-columns:1fr}.topic-contrast .arrow{text-align:center;transform:rotate(90deg)}}
@media(max-width:520px){.topic-big-example{font-size:19.5px;line-height:2.05}.topic-note{padding:12px 13px}}