:root{--onboarding-bg-start:#f7f8fc;--onboarding-bg-end:#eef3fb;--surface:#fff;--surface-soft:#f8fbff;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#64748b;--border-subtle:#d9e2ef;--primary:#0f6cbd;--primary-soft:#e8f3ff;--primary-shadow:#0f6cbd2e;--danger-soft:#fbe7e8}.topic-onboarding-page{background:radial-gradient(circle at 12% 8%, #0f6cbd1c, transparent 36%), radial-gradient(circle at 88% 0%, #00acc114, transparent 30%), linear-gradient(180deg, var(--onboarding-bg-start) 0%, var(--onboarding-bg-end) 100%);min-height:100vh;padding:40px 20px 160px}.topic-onboarding-shell{width:min(100%,900px);margin:0 auto;animation:.46s ease-out pageFadeIn}.progress-header{margin-bottom:24px}.progress-indicator{color:#11446f;letter-spacing:.01em;background:#deeffd;border-radius:999px;align-items:center;margin:0 0 10px;padding:6px 12px;font-size:.83rem;font-weight:700;display:inline-flex}.progress-title{color:var(--text-primary);margin:0;font-size:clamp(1.65rem,2.9vw,2.5rem);line-height:1.16}.progress-subtitle{max-width:66ch;color:var(--text-secondary);margin:12px 0 0;font-size:clamp(.96rem,1.2vw,1.05rem)}.topic-selection-panel,.selected-topics-panel{background:var(--surface);border:1px solid var(--border-subtle);border-radius:20px;box-shadow:0 18px 40px #0f172a14}.topic-selection-panel{padding:22px}.topic-selection-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:16px;display:flex}.topic-selection-title,.selected-topics-title{color:var(--text-primary);margin:0;font-size:1.1rem}.topic-selection-counter{color:var(--text-muted);margin:0;font-weight:700}.topic-selection-counter-limit{color:#0d4f89}.topic-grid{grid-template-columns:repeat(1,minmax(0,1fr));gap:14px;display:grid}.topic-card{border:1px solid var(--border-subtle);background:var(--surface-soft);width:100%;min-height:104px;color:var(--text-primary);text-align:start;cursor:pointer;border-radius:18px;align-items:center;gap:12px;padding:18px 16px;transition:transform .22s,box-shadow .22s,border-color .22s,background-color .22s;display:flex;position:relative}.topic-card:hover{transform:translateY(-2px)scale(1.015);box-shadow:0 14px 24px #0f172a1f}.topic-card:focus-visible,.selected-topic-chip-remove:focus-visible,.continue-button:focus-visible,.error-state-retry:focus-visible{outline-offset:2px;outline:3px solid #0f6cbd66}.topic-card-selected{border-color:var(--primary);background:var(--primary-soft);box-shadow:0 12px 28px var(--primary-shadow);animation:.22s selectionPulse}.topic-card-limited{border-style:dashed}.topic-card-icon,.topic-card-skeleton-icon{background:#dde9f9;border-radius:12px;justify-content:center;align-items:center;width:36px;height:36px;display:inline-flex}.topic-card-icon-dot{background:#4f74a6;border-radius:50%;width:14px;height:14px}.topic-card-title{font-size:1rem;font-weight:700}.topic-card-check{top:10px;background:var(--primary);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-weight:700;display:inline-flex;position:absolute;inset-inline-end:10px}.selected-topics-panel{margin-top:18px;padding:18px}.selected-topics-empty{color:var(--text-muted);margin:10px 0 0}.selected-topic-chips{flex-wrap:wrap;gap:10px;margin-top:12px;display:flex}.selected-topic-chip{color:#0d4f89;background:#eef7ff;border:1px solid #b7d7f4;border-radius:999px;align-items:center;gap:8px;padding:8px 12px;animation:.26s both chipIn;display:inline-flex}.selected-topic-chip-remove{cursor:pointer;color:#0d4f89;background:#d9ecff;border:0;border-radius:50%;width:20px;height:20px;line-height:1}.continue-section{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffffeb;border:1px solid #dce8f6;border-radius:16px;margin-top:24px;padding:12px;position:sticky;bottom:12px;box-shadow:0 12px 34px #0f172a21}.continue-button{color:#fff;cursor:pointer;background:linear-gradient(135deg,#0f6cbd,#0b84d8);border:0;border-radius:14px;width:100%;min-height:50px;font-size:1rem;font-weight:700;transition:transform .17s,box-shadow .17s,filter .17s}.continue-button:hover:enabled{filter:brightness(1.03);transform:translateY(-1px);box-shadow:0 14px 26px #0f6cbd47}.continue-button:disabled{cursor:not-allowed;opacity:.56;box-shadow:none}.continue-helper{text-align:center;color:var(--text-muted);margin:8px 0 0;font-size:.9rem}.continue-button-loading{justify-content:center;align-items:center;gap:8px;display:inline-flex}.continue-button-spinner{border:2px solid #ffffff75;border-top-color:#fff;border-radius:50%;width:16px;height:16px;animation:.7s linear infinite spin}.submit-error-message{color:#7e2334;background:#fff0f3;border:1px solid #efb4bf;border-radius:12px;margin:12px 0 0;padding:10px 12px}.topic-card-skeleton{border:1px solid var(--border-subtle);background:#f2f6fc;border-radius:18px;align-items:center;gap:12px;min-height:104px;padding:18px 16px;display:flex;position:relative;overflow:hidden}.topic-card-skeleton:after{content:"";background:linear-gradient(90deg,#0000,#ffffff9e,#0000);animation:1.2s infinite shimmer;position:absolute;inset:0;transform:translate(-100%)}.topic-card-skeleton-icon,.topic-card-skeleton-line{z-index:1;position:relative}.topic-card-skeleton-line{background:#d8e3f2;border-radius:999px;width:70%;height:14px;display:block}.error-state{text-align:center;background:#fff7f8;border:1px solid #f2ccd2;border-radius:20px;margin-top:12px;padding:30px;box-shadow:0 18px 34px #770a1914}.error-state-icon{color:#8f2231;background:var(--danger-soft);border-radius:50%;justify-content:center;align-items:center;width:52px;height:52px;margin:0 auto 10px;font-size:1.4rem;font-weight:700;display:flex}.error-state-title{color:#5f1a27;margin:0}.error-state-text,.error-state-details{color:#7e3340}.error-state-details{margin-top:2px;font-size:.92rem}.error-state-retry{color:#5f1a27;cursor:pointer;background:#fff;border:1px solid #ca7988;border-radius:11px;min-width:120px;min-height:42px;margin-top:10px;font-weight:700}.topic-toast{inset-inline-start:50%;color:#fff;z-index:100;background:#0f172aeb;border-radius:999px;padding:10px 16px;animation:.22s toastIn;position:fixed;bottom:94px;transform:translate(-50%);box-shadow:0 12px 26px #0f172a59}@media (width>=520px){.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width>=760px){.topic-onboarding-page{padding-top:52px}.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (width>=980px){.topic-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (width<=640px){.topic-onboarding-page{padding-inline:14px}.topic-selection-panel,.selected-topics-panel{border-radius:16px}.topic-selection-panel{padding:16px}}@keyframes pageFadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes selectionPulse{0%{transform:scale(.98)}to{transform:scale(1)}}@keyframes chipIn{0%{opacity:0;transform:translateY(8px)scale(.95)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes toastIn{0%{opacity:0;transform:translate(-50%,6px)}to{opacity:1;transform:translate(-50%)}}@keyframes shimmer{to{transform:translate(100%)}}@keyframes spin{to{transform:rotate(360deg)}}