:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#15241f;background:#f4f6f1;font-synthesis:none;text-rendering:optimizeLegibility;--bg: #f4f6f1;--surface: #ffffff;--surface-soft: #eef2ec;--surface-strong: #e2e9df;--ink: #15241f;--muted: #66726d;--line: #d8dfd8;--line-strong: #bcc8bf;--primary: #155b4b;--primary-strong: #0e4539;--primary-soft: #dcece5;--accent: #d88b3a;--accent-soft: #f7e6d3;--danger: #a43c42;--danger-soft: #f6e3e5;--warning: #8a5c17;--warning-soft: #fff2d7;--success: #236d48;--success-soft: #e0f1e7;--info: #315f87;--info-soft: #e4edf6;--shadow-sm: 0 8px 24px rgba(21, 36, 31, .07);--shadow: 0 24px 70px rgba(21, 36, 31, .12);--radius-sm: 12px;--radius: 22px;--radius-lg: 34px}:root[data-theme=dark]{color:#ebf2ee;background:#101815;--bg: #101815;--surface: #17231f;--surface-soft: #1d2b26;--surface-strong: #263731;--ink: #ebf2ee;--muted: #a8b7b0;--line: #30413a;--line-strong: #445950;--primary: #69b79f;--primary-strong: #8ecab7;--primary-soft: #243f36;--accent: #efa95f;--accent-soft: #493523;--danger: #ef8e94;--danger-soft: #47272b;--warning: #efc16e;--warning-soft: #453821;--success: #7bc69b;--success-soft: #213d2e;--info: #83b9e8;--info-soft: #203648;--shadow-sm: 0 8px 24px rgba(0, 0, 0, .22);--shadow: 0 24px 70px rgba(0, 0, 0, .34)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;min-height:100vh;background:var(--bg);color:var(--ink)}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:-1;background:radial-gradient(circle at 12% 5%,color-mix(in srgb,var(--primary) 10%,transparent),transparent 28rem),radial-gradient(circle at 90% 20%,color-mix(in srgb,var(--accent) 10%,transparent),transparent 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minmax(330px,.88fr);gap:clamp(36px,6vw,92px);align-items:center}.hero-copy h1{font-family:Georgia,Times New Roman,serif;font-size:clamp(2.5rem,4.35vw,4.6rem);line-height:.99;max-width:880px;margin:20px 0 24px;text-wrap:balance}.hero-copy p{max-width:690px;color:var(--muted);font-size:clamp(1rem,1.35vw,1.2rem);line-height:1.68}.hero-visual{width:clamp(340px,34vw,550px);max-width:100%;aspect-ratio:1;position:relative;display:grid;place-items:center;justify-self:center;animation:float 6s ease-in-out infinite;isolation:isolate;overflow:visible}.hero-visual:before,.hero-visual:after{content:"";position:absolute;border-radius:50%;border:1px solid var(--line);opacity:.6}.hero-visual:before{top:4%;right:4%;bottom:4%;left:4%}.hero-visual:after{top:22%;right:22%;bottom:22%;left:22%}.hero-core{width:39%;aspect-ratio:1;border-radius:50%;display:grid;place-items:center;background:var(--primary);color:#fff;font-weight:800;font-size:clamp(.9rem,1.3vw,1.2rem);box-shadow:0 0 48px color-mix(in 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rotate(-360deg)}}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(24px,3vw,42px);min-height:290px;display:flex;flex-direction:column;justify-content:flex-end;box-shadow:var(--shadow-sm)}.feature-card.featured{background:var(--primary);color:#fff;transform:translateY(-20px)}.feature-card h2{font-size:1.55rem;margin:18px 0 10px}.feature-card p{color:var(--muted);line-height:1.65;margin:0}.feature-card.featured p{color:#ffffffc2}.feature-index{color:var(--accent);font-weight:800;letter-spacing:.12em}.btn{min-height:44px;border:1px solid transparent;border-radius:12px;padding:10px 18px;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;font-weight:800;font-size:.86rem;cursor:pointer;transition:transform .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s 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p{color:var(--muted);max-width:760px;margin-bottom:0;line-height:1.6}.metrics-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}.metrics-grid.compact{grid-template-columns:repeat(3,1fr)}.metric-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:6px;box-shadow:var(--shadow-sm)}.metric-card span{color:var(--muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;font-weight:800}.metric-card strong{font-size:clamp(1.6rem,3vw,2.5rem)}.metric-card small{color:var(--muted)}.card-section{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(22px,3.5vw,38px);box-shadow:var(--shadow-sm)}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:24px}.section-heading h2{font-size:clamp(1.5rem,3vw,2.4rem);margin:7px 0 0}.section-heading>small{color:var(--muted);text-align:right}.study-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.study-grid.compact{grid-template-columns:repeat(2,1fr)}.study-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:clamp(25px,4vw,44px);display:flex;flex-direction:column;gap:24px;min-height:470px;box-shadow:var(--shadow)}.study-card-head{display:grid;grid-template-columns:auto 1fr auto;align-items:start;gap:16px}.study-card-head h2{font-size:clamp(1.4rem,2.4vw,2rem);margin:2px 0 8px}.study-card-head p{color:var(--muted);margin:0;font-size:.86rem}.study-mark{width:54px;height:54px;border-radius:18px;display:grid;place-items:center;background:var(--primary-soft);color:var(--primary);font-size:1.4rem;font-weight:800}.study-note{color:var(--muted);line-height:1.7;flex:1}.status{display:inline-flex;width:max-content;align-items:center;border-radius:999px;padding:7px 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78px)}.study-topbar{min-height:76px;display:grid;grid-template-columns:1fr minmax(260px,.75fr) auto;gap:24px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line)}.study-topbar>div:first-child{display:flex;flex-direction:column;gap:5px}.study-progress{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center}.study-progress .progress-wrap{width:100%}.study-progress>span{color:var(--muted);font-size:.75rem;white-space:nowrap}.question-board{width:min(960px,100%);height:clamp(590px,calc(100dvh - 178px),780px);min-height:590px;margin:clamp(18px,3.2vh,34px) auto 0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:clamp(24px,3.3vw,46px);box-shadow:var(--shadow);display:grid;grid-template-rows:auto minmax(116px,1fr) auto auto;overflow:hidden}.question-number{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--primary-soft);color:var(--primary);font-weight:800}.question-board h1{font-family:Georgia,Times New Roman,serif;font-size:clamp(1.75rem,2.6vw,2.9rem);line-height:1.1;margin:14px 0 18px;min-height:0;display:flex;align-items:center;overflow:auto;text-wrap:balance}.answer-list{display:grid;grid-template-columns:1fr;gap:7px;align-content:center}.answer-option{min-height:52px;padding:8px 14px;display:flex;align-items:center;gap:12px;text-align:left;border:1px solid var(--line);border-radius:12px;background:var(--surface-soft);color:var(--ink);cursor:pointer;font-weight:700;font-size:clamp(.86rem,1.15vw,1rem)}.answer-option:hover{border-color:var(--primary)}.answer-option.selected{background:var(--primary-soft);border-color:var(--primary);color:var(--primary-strong)}.answer-option kbd{width:30px;height:30px;flex:0 0 30px;display:grid;place-items:center;border-radius:8px;background:var(--surface);border:1px solid var(--line);color:var(--muted)}.question-actions{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;margin-top:0;padding-top:16px}.estimate{color:var(--muted);text-align:center;font-size:.76rem}.ppo-board,.rating-board{margin:18px auto 0}.board-heading{text-align:center;max-width:860px;margin:0 auto 18px}.board-heading h1{font-family:Georgia,Times New Roman,serif;font-size:clamp(1.8rem,3.2vw,3.35rem);line-height:1.05;margin:7px 0 8px;text-wrap:balance}.board-heading p{color:var(--muted);margin:4px 0;line-height:1.55}.round-pill,.level-pill{display:inline-flex;align-items:center;padding:7px 11px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:.72rem;font-weight:800}.image-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(10px,1.2vw,16px);max-width:1320px;margin:0 auto;align-items:stretch}.image-grid.count-4{grid-template-columns:repeat(4,minmax(0,1fr))}.image-grid.count-2{grid-template-columns:repeat(2,minmax(0,1fr));max-width:900px}.image-grid.count-5,.image-grid.count-6{grid-template-columns:repeat(3,minmax(0,1fr))}.image-choice{position:relative;min-height:0;padding:0;border:2px solid transparent;border-radius:17px;overflow:hidden;background:var(--surface);color:#fff;cursor:pointer;box-shadow:var(--shadow-sm);display:block}.image-media{width:100%;aspect-ratio:4 / 3;min-height:0;display:grid;place-items:center;overflow:hidden;background:color-mix(in srgb,var(--surface-strong) 58%,#101511)}.image-choice:after{content:"";position:absolute;inset:auto 0 0;height:42%;background:linear-gradient(transparent,#000000a6);pointer-events:none}.image-choice img{width:100%;height:100%;min-height:0;max-height:none;object-fit:contain;transition:transform .3s ease,filter .2s ease}.image-choice:hover img{transform:scale(1.025)}.image-choice.selected{border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 25%,transparent),var(--shadow)}.image-choice:not(.selected):has(~.image-choice.selected),.image-grid:has(.image-choice.selected) .image-choice:not(.selected) img{filter:saturate(.65) brightness(.85)}.image-check{position:absolute;left:12px;bottom:10px;z-index:2;font-weight:800;text-align:left;padding:6px 9px;border-radius:999px;background:#0a120f9e;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);font-size:.78rem}.ppo-actions{max-width:1320px;margin:16px auto 0;display:flex;justify-content:space-between;gap:14px}.ppo-actions.end{justify-content:flex-end}.btn.no-opinion{background:var(--surface);border-color:var(--line-strong);color:var(--muted)}.btn.no-opinion.active{background:var(--warning-soft);border-color:var(--warning);color:var(--warning)}.rating-board{max-width:1120px}.rating-image{width:min(680px,100%);max-height:42vh;margin:0 auto 18px;border-radius:var(--radius);overflow:hidden;background:var(--surface);box-shadow:var(--shadow)}.rating-image img{width:100%;max-height:42vh;object-fit:contain;background:#0d1210}.rating-scale{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.rating-scale button{min-height:72px;padding:8px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);border-radius:13px;background:var(--surface);color:var(--ink);cursor:pointer}.rating-scale button span{font-size:.86rem;line-height:1.25;font-weight:650;text-align:center}.rating-scale button:hover,.rating-scale button.selected{border-color:var(--primary);background:var(--primary-soft);color:var(--primary);transform:translateY(-2px)}.completion-card{width:min(700px,100%);margin:10vh auto;padding:clamp(34px,6vw,70px);background:var(--surface);border:1px solid 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