.level-page{--level-accent: #43886d;--level-dark: #285a49;--level-soft: #e7f1e9;--level-ink: #172b36;--level-muted: #66777c;color:var(--level-ink);background:#f8f7f3;font-family:Inter,Noto Sans JP,sans-serif;-webkit-user-select:text;user-select:text;min-height:100vh}.level-page-n4{--level-accent: #45849b;--level-dark: #285a6e;--level-soft: #e8f2f5}.level-page-n3{--level-accent: #af793e;--level-dark: #815527;--level-soft: #f8f0e5}.level-page-n2{--level-accent: #bd694b;--level-dark: #894532;--level-soft: #fbefe9}.level-page-n1{--level-accent: #a45665;--level-dark: #793a48;--level-soft: #f8edf0}.level-page *{box-sizing:border-box}.level-container{width:min(100% - 48px,1200px);margin-inline:auto}.level-page a:focus-visible,.level-page button:focus-visible,.level-page select:focus-visible{outline:3px solid var(--level-accent);outline-offset:3px}.level-header{position:sticky;top:0;z-index:50;background:#f8f7f3f5;border-bottom:1px solid #dfe5df;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.level-header-inner{display:flex;align-items:center;gap:24px;height:70px}.level-brand{display:inline-flex;align-items:center;gap:11px;color:var(--level-ink);font-size:13px;font-weight:800;text-decoration:none;white-space:nowrap}.level-brand-mark{display:grid;place-items:center;width:37px;height:37px;padding-right:3px;border-radius:10px;background:var(--level-ink);color:#fff;font-size:23px;letter-spacing:-.11em;line-height:1}.level-brand-mark span{color:#ed7656}.level-header-levels{display:flex;align-items:center;gap:4px;margin-inline:auto;padding:4px;border:1px solid #e1e6e2;border-radius:10px;background:#f0f2ee}.level-header-levels a{display:grid;place-items:center;min-width:48px;height:30px;padding:0 10px;border-radius:7px;color:#64747a;text-decoration:none;font-size:12px;font-weight:800;transition:background .2s,color .2s}.level-header-levels a:hover{color:var(--level-dark);background:#fff}.level-header-levels a.is-current{background:var(--level-ink);color:#fff;box-shadow:0 2px 5px #172b3624}.level-mobile-select{display:none}.level-header-account{display:inline-flex;align-items:center;gap:15px;padding:9px 13px;border:1px solid #c2ccca;border-radius:8px;color:var(--level-ink);background:transparent;text-decoration:none;white-space:nowrap;font:700 12px Inter,Noto Sans JP,sans-serif;cursor:pointer}.level-header-account:hover{background:#fff;border-color:var(--level-ink)}.level-hero{overflow:hidden;border-bottom:1px solid #dfe7df;background:radial-gradient(circle at 88% 15%,var(--level-soft),transparent 37%),linear-gradient(120deg,#f9f8f3,#f2f3ec)}.level-hero-inner{padding-block:18px}.level-hero-copy{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto auto;align-items:center;column-gap:28px}.level-hero h1{grid-column:1;grid-row:1;display:flex;align-items:baseline;gap:12px;margin:0;font-family:"Noto Serif JP",serif;font-size:clamp(38px,4vw,48px);line-height:1.12;letter-spacing:-.055em;font-weight:900}.level-hero h1>span{color:var(--level-accent);font-family:Inter,sans-serif;font-size:16px;letter-spacing:.03em}.level-hero h1 em{margin-left:7px;color:var(--level-accent);font-size:19px;font-style:normal;letter-spacing:0}.level-intro{grid-column:1;grid-row:2;margin:3px 0 0;color:#53666d;font-size:13px;line-height:1.5;font-weight:600}.level-hero-actions{grid-column:2;grid-row:1 / 3;display:flex;align-items:center;gap:13px;margin:0}.level-primary-action{display:inline-flex;justify-content:space-between;align-items:center;gap:14px;min-height:40px;padding:0 13px;border-radius:8px;color:#fff;background:var(--level-ink);text-decoration:none;font-size:12px;font-weight:800;white-space:nowrap;transition:transform .2s,background .2s}.level-primary-action:hover{transform:translateY(-2px);background:#2c4855}.level-primary-action span{font-size:16px;font-weight:400}.level-secondary-action{display:inline-flex;align-items:center;gap:7px;padding:7px 0;border:0;border-bottom:1px solid #a3b2af;background:transparent;color:var(--level-ink);font:800 12px Inter,Noto Sans JP,sans-serif;white-space:nowrap;cursor:pointer}.level-secondary-action:hover{color:var(--level-dark);border-color:var(--level-dark)}.level-tabs-wrap{position:sticky;top:70px;z-index:40;border-bottom:1px solid #dde4df;background:#f8f7f3f5;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.level-tabs{display:flex;gap:28px;overflow-x:auto;scrollbar-width:none}.level-tabs::-webkit-scrollbar{display:none}.level-tabs button{position:relative;display:inline-flex;align-items:center;gap:9px;min-height:60px;padding:0 3px;border:0;background:transparent;color:#718084;font:800 14px Inter,Noto Sans JP,sans-serif;white-space:nowrap;cursor:pointer}.level-tabs button:hover{color:var(--level-dark)}.level-tabs button.is-active{color:var(--level-ink)}.level-tabs button.is-active:after{content:"";position:absolute;right:0;bottom:0;left:0;height:3px;border-radius:3px 3px 0 0;background:var(--level-accent)}.level-tabs small{padding:3px 7px;border-radius:99px;background:#e7ebe8;color:#64767a;font-size:10px}.level-tabs .is-active small{background:var(--level-soft);color:var(--level-dark)}.level-content{min-height:460px;padding-top:44px;padding-bottom:96px;scroll-margin-top:146px}.level-section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:25px}.level-section-kicker{margin:0 0 8px;color:var(--level-accent);font-size:10px;font-weight:900;letter-spacing:.17em}.level-section-heading h2{margin:0;font-family:"Noto Serif JP",serif;font-size:clamp(25px,2.6vw,34px);font-weight:900;letter-spacing:-.035em}.level-section-heading p:last-child{margin:10px 0 0;color:var(--level-muted);font-size:13px;line-height:1.7}.level-section-count{align-self:center;padding:8px 11px;border-radius:7px;background:var(--level-soft);color:var(--level-dark);font-size:12px;font-weight:800;white-space:nowrap}.level-exam-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}.level-exam-card{display:flex;flex-direction:column;min-height:215px;padding:19px;border:1px solid #dce4df;border-radius:12px;background:#fff;color:var(--level-ink);text-decoration:none;box-shadow:0 5px 16px #172b3606;transition:transform .2s,border-color .2s,box-shadow .2s}.level-exam-card:hover,.level-round-card:hover,.level-archive-card:hover{transform:translateY(-3px);border-color:var(--level-accent);box-shadow:0 14px 27px #172b3614}.level-exam-card-top{display:flex;justify-content:space-between;color:#879797}.level-exam-card-top small{font-size:9px;font-weight:900;letter-spacing:.1em}.level-exam-card-top>span{color:var(--level-accent);font-size:17px}.level-exam-number{margin:11px 0 4px;color:var(--level-accent);font-size:42px;font-weight:800;line-height:1;letter-spacing:-.075em}.level-exam-card>strong{font-size:14px}.level-exam-card-bottom{display:flex;align-items:center;justify-content:space-between;gap:5px;margin-top:auto;padding-top:18px;color:#889698;font-size:10px;font-weight:700}.level-exam-card-bottom span{color:var(--level-dark);font-size:11px;font-weight:800;white-space:nowrap}.level-categories{display:grid;gap:13px}.level-category-group{padding:18px 20px;border:1px solid #dfe6e0;border-radius:12px;background:#fff}.level-category-heading{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:13px}.level-category-heading h3{margin:0;font-size:14px;font-weight:900}.level-category-heading span{color:#8a999a;font-size:10px;font-weight:700}.level-category-mobile-hint{display:none}.level-category-list{display:flex;flex-wrap:wrap;gap:8px}.level-category-chip{display:flex;flex-direction:column;align-items:flex-start;gap:4px;min-width:125px;min-height:60px;padding:9px 13px;border:1px solid #dfe6e1;border-radius:8px;background:#fafbf9;color:var(--level-ink);text-align:left;cursor:pointer;transition:border-color .2s,background .2s}.level-category-chip:hover{border-color:var(--level-accent)}.level-category-chip.is-active{border-color:var(--level-accent);background:var(--level-soft)}.level-category-chip small{color:#829192;font-size:10px;font-weight:700}.level-category-chip strong{font-size:12px}.level-category-chip.is-active small,.level-category-chip.is-active strong{color:var(--level-dark)}.level-selected-topic{display:flex;justify-content:space-between;align-items:flex-end;gap:15px;margin:30px 0 17px}.level-selected-topic small{color:var(--level-accent);font-size:10px;font-weight:900;letter-spacing:.08em}.level-selected-topic h3{margin:5px 0 0;font-family:"Noto Serif JP",serif;font-size:21px;font-weight:900}.level-selected-topic p{max-width:740px;margin:7px 0 0;color:#66777c;font-size:12px;line-height:1.7}.level-selected-topic>span{color:#869596;font-size:11px;font-weight:700;white-space:nowrap}.level-round-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.level-round-card{display:flex;flex-direction:column;justify-content:space-between;min-height:91px;padding:14px 15px;border:1px solid #dfe6e0;border-radius:9px;background:#fff;color:var(--level-ink);text-decoration:none;transition:transform .2s,border-color .2s,box-shadow .2s}.level-round-top{display:flex;align-items:center;justify-content:space-between;gap:5px}.level-round-top strong{font-size:14px}.level-round-top>span{color:var(--level-accent);font-size:17px}.level-round-meta{display:flex;align-items:center;gap:6px;color:#829091;font-size:11px}.level-round-meta i{width:3px;height:3px;border-radius:50%;background:#a6b3b1}.level-archive-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:11px}.level-archive-card{display:flex;flex-direction:column;gap:6px;min-height:128px;padding:16px;border:1px solid #dfe6e0;border-radius:10px;background:#fff;color:var(--level-ink);text-decoration:none;transition:transform .2s,border-color .2s,box-shadow .2s}.level-archive-card small{color:#849394;font-size:10px;font-weight:700}.level-archive-card strong{font-size:17px}.level-archive-card>span{margin-top:auto;color:var(--level-dark);font-size:11px;font-weight:800}.level-materials{margin-top:52px}.level-footer{border-top:1px solid #dce3dd;background:#eef1ec}.level-footer-inner{display:flex;justify-content:space-between;align-items:center;gap:15px;min-height:75px;color:#78898a;font-size:11px;font-weight:700}.level-footer a{color:var(--level-dark);text-decoration:none}.level-footer a:hover{text-decoration:underline}@media (max-width: 980px){.level-hero-copy{column-gap:15px}.level-hero-actions{gap:9px}.level-exam-grid,.level-round-grid,.level-archive-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (max-width: 700px){.level-container{width:min(100% - 32px,560px)}.level-header-inner{height:62px;gap:12px}.level-brand-mark{width:33px;height:33px;font-size:21px}.level-brand-name,.level-header-levels{display:none}.level-mobile-select{display:block;margin-right:auto}.level-mobile-select select{max-width:155px;height:36px;padding:0 27px 0 11px;border:1px solid #cbd6cf;border-radius:8px;background:#fff;color:var(--level-ink);font:800 12px Inter,Noto Sans JP,sans-serif}.level-header-account{gap:7px;padding:8px 10px;font-size:11px}.level-hero-inner{padding-block:15px}.level-hero-copy{display:block}.level-hero h1{gap:7px;font-size:40px}.level-hero h1>span{font-size:12px}.level-hero h1 em{font-size:16px}.level-intro{margin-top:3px;font-size:12px}.level-hero-actions{gap:11px;margin-top:10px}.level-primary-action{min-height:36px;padding-inline:11px;font-size:11px}.level-secondary-action{gap:5px;font-size:11px}.level-tabs-wrap{top:62px}.level-tabs{gap:20px}.level-tabs button{min-height:52px;font-size:12px}.level-content{padding-top:30px;padding-bottom:64px;scroll-margin-top:123px}.level-section-heading{margin-bottom:20px}.level-section-heading h2{font-size:25px}.level-section-heading p:last-child{font-size:12px}.level-exam-grid,.level-round-grid,.level-archive-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.level-exam-card{min-height:188px;padding:15px}.level-exam-number{font-size:37px}.level-exam-card>strong{font-size:12px}.level-category-group{padding:15px}.level-category-desktop-hint{display:none}.level-category-mobile-hint{display:inline}.level-category-list{flex-wrap:nowrap;overflow-x:auto;padding-bottom:5px;scrollbar-width:thin;scroll-snap-type:x proximity}.level-category-chip{min-width:117px;scroll-snap-align:start}.level-selected-topic{align-items:flex-start}.level-selected-topic>span{display:none}}@media (max-width: 380px){.level-container{width:min(100% - 24px,560px)}.level-hero h1{font-size:37px}.level-primary-action{font-size:11px}.level-section-count{display:none}.level-exam-card{padding:12px}.level-exam-card-bottom{font-size:9px}}@media (prefers-reduced-motion: reduce){.level-page *{scroll-behavior:auto!important;transition:none!important}}.top-page{--ink: #172b36;--muted: #61717b;--paper: #f8f7f3;--orange: #c84b31;color:var(--ink);background:var(--paper);font-family:Inter,Noto Sans JP,sans-serif;-webkit-user-select:text;user-select:text}.top-page *{box-sizing:border-box}.top-container{width:min(100% - 48px,1200px);margin-inline:auto}.top-header{position:sticky;top:0;z-index:50;background:#f8f7f3f0;border-bottom:1px solid rgba(23,43,54,.1);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.top-header-inner{height:78px;display:flex;align-items:center;gap:32px}.top-brand{display:inline-flex;align-items:center;gap:12px;min-width:0;text-decoration:none;color:var(--ink)}.top-brand-mark{display:grid;place-items:center;width:42px;height:42px;background:var(--ink);color:#fff;border-radius:12px;font-size:26px;font-weight:700;letter-spacing:-.11em;padding-right:4px;line-height:1}.top-brand-mark span,.top-footer-brand>span{color:#ed7656}.top-brand-copy{display:flex;flex-direction:column;gap:1px;white-space:nowrap}.top-brand-copy strong{font-size:14px;letter-spacing:.015em}.top-brand-copy small{font-size:10px;color:var(--muted);letter-spacing:.035em}.top-nav{display:flex;align-items:center;gap:32px;margin-left:auto}.top-nav a{color:#485b65;text-decoration:none;font-size:13px;font-weight:700;transition:color .2s}.top-nav a:hover{color:var(--orange)}.top-login{display:inline-flex;align-items:center;justify-content:center;gap:20px;padding:10px 15px;border:1px solid #bdc8c8;border-radius:9px;background:transparent;color:var(--ink);font:700 12px Inter,Noto Sans JP,sans-serif;text-decoration:none;white-space:nowrap;cursor:pointer;transition:background .2s,border-color .2s}.top-login:hover{background:#fff;border-color:var(--ink)}.top-hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#f9f7f0,#f4f2e9 55%,#e9eee9);border-bottom:1px solid #e1e5de}.top-hero:before{content:"";position:absolute;left:-130px;bottom:-270px;width:470px;height:470px;border:1px solid rgba(87,118,110,.13);border-radius:50%;box-shadow:0 0 0 70px #57766e09,0 0 0 140px #57766e06}.top-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(400px,.92fr);align-items:center;gap:44px;padding-top:22px;padding-bottom:22px}.top-hero-copy{position:relative;z-index:2}.top-eyebrow{display:flex;align-items:center;gap:12px;margin:0 0 10px;color:#a3422f;font-size:11px;font-weight:800;letter-spacing:.17em}.top-eyebrow-line{display:inline-block;width:28px;height:2px;background:#bb583f}.top-hero h1{margin:0;font-family:"Noto Serif JP",serif;font-size:clamp(40px,4vw,54px);line-height:1.22;letter-spacing:-.055em;font-weight:900}.top-hero h1 em{font-style:normal;color:var(--orange)}.top-hero-lead{margin:12px 0 0;max-width:580px;color:#53646c;font-size:13px;line-height:1.7;font-weight:600}.top-hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:24px;margin-top:18px}.top-primary-button{display:inline-flex;align-items:center;justify-content:space-between;gap:28px;min-height:55px;padding:0 21px;border-radius:8px;background:var(--ink);color:#fff;text-decoration:none;font-size:13px;font-weight:800;box-shadow:0 14px 26px #172b3621;transition:transform .2s,background .2s,box-shadow .2s}.top-primary-button:hover{transform:translateY(-2px);background:#294653;box-shadow:0 17px 28px #172b3633}.top-primary-button span{font-size:18px;font-weight:400}.top-text-link{padding:8px 0;border-bottom:1px solid #9aa9a7;color:var(--ink);text-decoration:none;font-size:12px;font-weight:800;transition:color .2s,border-color .2s}.top-text-link:hover{color:var(--orange);border-color:var(--orange)}.top-text-link span{margin-left:8px}.top-hero-visual{position:relative;height:300px;display:grid;place-items:center}.top-visual-halo{position:absolute;top:15px;right:0;bottom:5px;left:0;border-radius:50%;background:radial-gradient(circle at center,#dce7df 0%,#e7ebe1 45%,transparent 70%)}.top-visual-orbit{position:absolute;border:1px solid rgba(42,80,80,.15);border-radius:50%;transform:rotate(-24deg)}.top-visual-orbit-one{width:350px;height:225px}.top-visual-orbit-two{width:390px;height:270px}.top-preview{position:relative;z-index:2;width:min(280px,82%);height:280px;transform:rotate(4deg);border:1px solid #d5ddd8;border-radius:16px;background:#fff;box-shadow:0 28px 45px #213f3829,0 7px 14px #213f3814;overflow:hidden}.top-preview-header{height:42px;display:flex;align-items:center;gap:13px;padding:0 18px;border-bottom:1px solid #e7ebe7;color:#9ba8a8;font-size:8px;font-weight:800;letter-spacing:.1em}.top-preview-logo{display:grid;place-items:center;width:44px;height:23px;background:#ba4b35;border-radius:3px;color:#fff;font-size:10px;letter-spacing:0}.top-preview-dots{display:flex;gap:3px;margin-left:auto}.top-preview-dots i{display:block;width:4px;height:4px;border-radius:50%;background:#a8b5b2}.top-preview-body{padding:13px 19px}.top-preview-overline{color:#bd624d;font-size:9px;font-weight:800;letter-spacing:.17em}.top-preview-title{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin-top:7px;color:#172b36;font-family:"Noto Serif JP",serif;font-size:17px;font-weight:900}.top-preview-title span{color:#95a3a2;font-family:Inter,sans-serif;font-size:9px;font-weight:800;white-space:nowrap}.top-preview-rule{height:2px;margin-top:8px;background:#203843}.top-preview-meta{display:flex;justify-content:space-between;margin-top:9px;color:#758683;font-size:10px;font-weight:800}.top-preview-meta span:first-child{color:#38575b}.top-preview-question{margin-top:9px;padding:8px 11px;background:#f4f7f4;border-radius:8px;color:#31494f;font-size:10px;font-weight:800;line-height:1.6}.top-preview-choices{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-top:8px}.top-preview-choices>span{height:25px;display:flex;align-items:center;gap:10px;border:1px solid #dfe6e2;border-radius:6px;padding:0 11px}.top-preview-choices i{display:grid;place-items:center;width:18px;height:18px;border:1px solid #a6b6b4;border-radius:50%;font-size:9px;font-style:normal;font-weight:700;color:#728583}.top-preview-choices b{width:66%;height:5px;background:#dce4e0;border-radius:2px}.top-preview-choices .is-checked{border-color:#ca745e;background:#fff8f4}.top-preview-choices .is-checked i{background:var(--orange);border-color:var(--orange);color:#fff}.top-preview-progress{display:flex;gap:5px;margin-top:9px}.top-preview-progress span{width:19px;height:3px;background:#e2e8e4;border-radius:9px}.top-preview-progress span:first-child{background:var(--orange);width:35px}.top-visual-note{position:absolute;z-index:3;border:1px solid #e3e5dc;border-radius:10px;background:#fffdfa;box-shadow:0 12px 30px #213f381a}.top-visual-note-top{top:5px;left:-3px;transform:rotate(-6deg);padding:15px 19px;color:#4b6467;font-family:"Noto Serif JP",serif;font-size:13px;font-weight:700;line-height:1.6}.top-visual-note-bottom{right:-7px;bottom:13px;display:flex;align-items:center;gap:11px;transform:rotate(-5deg);padding:13px 18px}.top-visual-note-bottom>span:last-child{display:flex;flex-direction:column;gap:3px}.top-visual-note-bottom strong{font-size:11px}.top-visual-note-bottom small{color:#869492;font-size:9px}.top-note-icon{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:#dfece3;color:#3b825f;font-size:15px;font-weight:900}.top-visual-kanji{position:absolute;top:2px;right:6px;color:#a7baae;font-family:"Noto Serif JP",serif;font-size:58px;opacity:.38}.top-levels{padding:36px 0 76px;scroll-margin-top:88px}.top-section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:20px}.top-section-kicker{margin:0 0 12px;color:#bf6149;font-size:10px;font-weight:900;letter-spacing:.18em}.top-section-heading h2,.top-how h2{margin:0;font-family:"Noto Serif JP",serif;font-size:clamp(27px,3vw,39px);font-weight:900;letter-spacing:-.035em}.top-section-heading p:last-child{margin:12px 0 0;color:#64747b;font-size:13px;line-height:1.7}.top-section-aside{padding-bottom:6px;color:#677e7d;font-size:12px;font-weight:800;letter-spacing:.1em;white-space:nowrap}.top-section-aside span{margin:0 12px;color:#adbcb7}.top-level-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}.top-level-card{--accent: #468870;--soft: #eaf3eb;position:relative;display:flex;flex-direction:column;min-height:339px;padding:22px 21px 19px;border:1px solid #dce3dd;border-radius:13px;background:#fff;color:var(--ink);text-decoration:none;box-shadow:0 5px 15px #172b3606;transition:transform .25s,box-shadow .25s,border-color .25s}.top-level-card:hover{transform:translateY(-5px);border-color:var(--accent);box-shadow:0 18px 35px #172b3617}.top-level-n4{--accent: #45849b;--soft: #e9f3f5}.top-level-n3{--accent: #ab753c;--soft: #f9f1e5}.top-level-n2{--accent: #b9674a;--soft: #fbefe9}.top-level-n1{--accent: #a45665;--soft: #f9ecf0}.top-card-index{color:#7f9193;font-size:9px;font-weight:900;letter-spacing:.15em}.top-card-level{display:block;margin-top:26px;color:var(--accent);font-size:50px;font-weight:800;letter-spacing:-.09em;line-height:.9}.top-card-name{margin-top:10px;font-family:"Noto Serif JP",serif;font-size:17px;font-weight:900}.top-card-description{margin-top:16px;font-size:11px;font-weight:800;line-height:1.6}.top-card-detail{margin-top:4px;color:#78888b;font-size:10px;line-height:1.5}.top-card-divider{height:1px;margin:20px 0 14px;background:#e6ebe7}.top-card-counts{display:flex;flex-direction:column;gap:6px;margin-top:auto;color:#728186;font-size:10px}.top-card-counts strong{color:var(--ink);font-size:11px}.top-card-action{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:18px;padding:11px 12px;border-radius:7px;background:var(--soft);color:var(--accent);font-size:11px;font-weight:800;transition:background .2s,color .2s}.top-level-card:hover .top-card-action{background:var(--accent);color:#fff}.top-card-action span{font-size:15px;font-weight:400}.top-how{padding:85px 0;background:#eaf0ed;border-top:1px solid #dce5e0;scroll-margin-top:78px}.top-how-inner{display:grid;grid-template-columns:.8fr 1.2fr;gap:100px}.top-how h2{line-height:1.5}.top-how-intro>p:last-child{max-width:350px;margin:20px 0 0;color:#60737a;font-size:13px;line-height:1.95}.top-steps{border-top:1px solid #bdcbc5}.top-step{display:grid;grid-template-columns:58px 1fr;gap:18px;padding:23px 0;border-bottom:1px solid #bdcbc5}.top-step>span{padding-top:2px;color:#b7604d;font-size:13px;font-weight:800;letter-spacing:.04em}.top-step h3{margin:0;font-size:15px;font-weight:800}.top-step p{margin:8px 0 0;color:#64767a;font-size:12px;line-height:1.8}.top-footer{background:#1b3039;color:#d3dedb}.top-footer-inner{min-height:103px;display:flex;align-items:center;justify-content:space-between;gap:20px}.top-footer-brand{color:#fff;font-size:27px;font-weight:800;letter-spacing:-.1em}.top-footer-brand small{margin-left:8px;font-size:12px;font-weight:700;letter-spacing:0}.top-footer-inner>span:nth-child(2){color:#a8b7b8;font-size:11px}.top-footer a{color:#e7eeea;font-size:11px;font-weight:700;text-decoration:none}.top-footer a:hover{text-decoration:underline}.top-page a:focus-visible,.top-page button:focus-visible{outline:3px solid #d66548;outline-offset:4px}@media (max-width: 1100px){.top-hero-grid{grid-template-columns:1fr .9fr;gap:10px}.top-level-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.top-level-card{min-height:312px}.top-visual-note-top{left:3px}.top-visual-note-bottom{right:0}}@media (max-width: 760px){.top-container{width:min(100% - 36px,560px)}.top-header-inner{height:64px;gap:12px}.top-brand-mark{width:36px;height:36px;font-size:23px}.top-brand-copy strong{font-size:12px}.top-brand-copy small{font-size:8px}.top-nav{display:none}.top-login{margin-left:auto;padding:9px 11px;gap:8px;font-size:11px}.top-hero-grid{display:block;padding-top:34px;padding-bottom:30px}.top-hero h1{font-size:clamp(40px,9vw,54px)}.top-hero-lead{margin-top:14px;font-size:13px;line-height:1.8}.top-desktop-break{display:none}.top-hero-actions{gap:19px;margin-top:19px}.top-primary-button{min-height:52px}.top-hero-visual{display:none}.top-levels{padding:36px 0 60px;scroll-margin-top:66px}.top-section-heading{align-items:flex-start}.top-section-aside{display:none}.top-section-heading h2,.top-how h2{font-size:27px}.top-level-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.top-level-card{min-height:304px;padding:17px 15px}.top-card-level{font-size:43px;margin-top:22px}.top-card-description{font-size:10px}.top-card-detail{font-size:9px}.top-card-action{padding:10px 8px;font-size:10px}.top-how{padding:64px 0;scroll-margin-top:64px}.top-how-inner{grid-template-columns:1fr;gap:33px}.top-footer-inner{flex-wrap:wrap;padding-top:26px;padding-bottom:26px;min-height:0}.top-footer-inner>span:nth-child(2){order:3;width:100%}}@media (max-width: 390px){.top-container{width:min(100% - 28px,560px)}.top-brand-copy small{display:none}}@media (max-width: 600px){.top-level-grid{grid-template-columns:1fr}.top-level-card{display:grid;grid-template-columns:76px minmax(0,1fr);column-gap:16px;min-height:0;padding:17px 18px}.top-card-index{grid-column:1 / -1}.top-card-level{grid-column:1;grid-row:2 / 5;align-self:start;margin-top:19px;font-size:43px}.top-card-name{grid-column:2;grid-row:2;margin-top:16px;font-size:16px}.top-card-description{grid-column:2;grid-row:3;margin-top:5px;font-size:12px}.top-card-detail{grid-column:2;grid-row:4;margin-top:3px;font-size:11px}.top-card-divider{grid-column:1 / -1;grid-row:5;margin:15px 0 12px}.top-card-counts{grid-column:1 / -1;grid-row:6;flex-direction:row;flex-wrap:wrap;column-gap:15px;font-size:11px}.top-card-counts strong{font-size:12px}.top-card-action{grid-column:1 / -1;grid-row:7;margin-top:13px;font-size:12px}}@media (prefers-reduced-motion: reduce){.top-page *{scroll-behavior:auto!important;transition:none!important}}html,body{height:100%}body{margin:0}#root{min-height:100%;display:flex;flex-direction:column}.font-serif-jp{font-family:"Noto Serif JP",serif}.oval-bubble{display:inline-flex;align-items:center;justify-content:center;width:22px;height:29px;border:1.5px solid #1e293b;border-radius:50%/40%;background-color:#fff;font-family:Inter,sans-serif;font-size:11px;font-weight:700;color:#1e293b;cursor:pointer;-webkit-user-select:none;user-select:none;transition:all .1s ease-in-out;box-shadow:inset 0 1px 1px #0000000d;padding:0;line-height:1}.oval-bubble:hover{background-color:#f1f5f9;border-color:#0f172a;transform:scale(1.05)}.oval-bubble.marked{background:radial-gradient(circle at 45% 40%,#3b3b3b,#1a1a1a 70%,#000)!important;border-color:#000!important;color:#ffffff40!important;box-shadow:0 0 2px #000c,inset 0 0 3px #000000e6;text-shadow:none}.oval-sample-marked{background:radial-gradient(circle at 45% 40%,#3b3b3b,#1a1a1a 70%,#000)!important;border-color:#000!important;color:#ffffff40!important}.jlpt-grid{border-collapse:collapse;width:100%;table-layout:fixed}.jlpt-grid th,.jlpt-grid td{border:1px solid #1e293b;text-align:center;vertical-align:middle;padding:4px 2px}@keyframes highlightRow{0%{background-color:#fef08a}to{background-color:transparent}}.row-highlight{animation:highlightRow 1.8s ease-out}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:#f1f5f9}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}.problem-passage{font-size:1.15rem;line-height:1.85;letter-spacing:.02em}.problem-passage p{margin-bottom:.75rem;font-size:1.15rem;line-height:1.85}.problem-passage .text-xs{font-size:.95rem!important;line-height:1.65}.problem-passage .text-sm{font-size:1.1rem!important;line-height:1.7}.problem-passage .text-base{font-size:1.25rem!important;line-height:1.8}.problem-passage table{font-size:.95rem!important}.problem-passage th,.problem-passage td{padding:6px 8px!important}::-webkit-scrollbar-thumb:hover{background:#94a3b8}ruby{ruby-position:over;ruby-align:center}rt{font-size:.55em;line-height:1;-webkit-user-select:none;user-select:none;color:#555}.safe-area-bottom{padding-bottom:calc(.625rem + env(safe-area-inset-bottom))}@media print{html,body{font-size:90%}@page{margin:12.6mm}html,body,#root{height:auto!important;min-height:0!important;overflow:visible!important}#root{display:block!important}.exam-room{display:block!important;height:auto!important;overflow:visible!important}.exam-app-header,.exam-answer-sheet,.no-print{display:none!important}.exam-main{display:block!important;width:auto!important;max-width:none!important;height:auto!important;min-height:0!important;overflow:visible!important;padding:0!important}.printable-problems{display:block!important;width:100%!important;height:auto!important;overflow:visible!important;border:0!important;border-radius:0!important;box-shadow:none!important}.problem-scroll{display:block!important;height:auto!important;overflow:visible!important;padding:0!important}.question-print-block{break-inside:avoid-page;box-shadow:none!important}.problem-passage,.problem-passage *{break-inside:avoid-page}}.problem-passage,.problem-passage p{line-height:2.2}u{text-decoration:underline;text-underline-offset:5px!important}