:root{--bg:#f8fafc;--surface:#fff;--surface-soft:#f1f5f9;--text:#0f172a;--muted:#64748b;--line:#e2e8f0;--brand:#2563eb;--brand-dark:#1d4ed8;--yellow:#fef3c7;--green:#dcfce7;--red:#fee2e2;--blue:#dbeafe;--purple:#ede9fe}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--text);word-break:keep-all;overflow-wrap:break-word;margin:0;font-family:Arial,Helvetica,sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}h1,h2,h3,p{margin-top:0}.container{width:min(1120px,100% - 32px);margin:0 auto}.header{z-index:20;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);background:#f8fafcf0;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:14px;min-height:64px;display:flex}.logo{letter-spacing:-.03em;flex:none;align-items:center;gap:10px;font-weight:800;display:flex}.logo-mark{color:#fff;background:linear-gradient(135deg,#2563eb,#7c3aed);border-radius:12px;place-items:center;width:34px;height:34px;font-size:14px;display:grid}.nav{color:var(--muted);white-space:nowrap;-webkit-overflow-scrolling:touch;justify-content:flex-end;align-items:center;gap:8px;font-size:14px;display:flex;overflow-x:auto}.nav a{border-radius:999px;align-items:center;min-height:40px;padding:8px 10px;display:inline-flex}.nav a:hover{background:var(--surface-soft);color:var(--text)}.hero{padding:56px 0 34px}.hero-grid{grid-template-columns:1.1fr .9fr;align-items:center;gap:32px;display:grid}.badge{border:1px solid var(--line);background:var(--surface);color:var(--brand);border-radius:999px;align-items:center;gap:8px;padding:6px 12px;font-size:13px;font-weight:700;display:inline-flex}.hero h1{letter-spacing:-.06em;margin:18px 0;font-size:clamp(36px,6vw,66px);line-height:1.08}.hero p{color:var(--muted);max-width:680px;font-size:18px}.hero-card,.card,.panel{background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:0 20px 60px #0f172a0f}.hero-card{padding:24px}.cta-row,.lesson-nav{flex-wrap:wrap;gap:12px;margin-top:28px;display:flex}.lesson-nav{justify-content:space-between}.btn{border:1px solid var(--line);background:var(--surface);text-align:center;border-radius:14px;justify-content:center;align-items:center;min-height:46px;padding:11px 16px;font-weight:800;display:inline-flex}.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand)}.btn-full{width:100%}.section{padding:36px 0}.section-tight{padding-top:22px}.section-panel{padding:28px}.section-title{letter-spacing:-.04em;margin-bottom:10px;font-size:30px;line-height:1.2}.section-desc{color:var(--muted);margin-bottom:24px}.course-grid{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.card{padding:22px}.card h3{letter-spacing:-.03em;margin-bottom:8px;font-size:22px;line-height:1.25}.card p{color:var(--muted);font-size:15px}.meta-row{flex-wrap:wrap;gap:8px;margin:14px 0;display:flex}.meta{background:var(--surface-soft);color:var(--muted);border-radius:999px;padding:5px 10px;font-size:13px;font-weight:700}.plan-grid{grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px;display:grid}.plan-grid-single{grid-template-columns:1fr}.plan-card{border:1px solid var(--line);background:var(--surface);border-radius:22px;padding:20px}.plan-card strong{letter-spacing:-.04em;font-size:24px}.plan-card p{color:var(--muted);font-size:14px}.page-hero{padding:42px 0 20px}.page-hero-compact{padding-bottom:8px}.breadcrumb{color:var(--muted);margin-bottom:16px;font-size:14px}.breadcrumb a{text-underline-offset:3px;text-decoration:underline}.day-layout{grid-template-columns:minmax(0,1fr) 300px;gap:24px;padding:18px 0 56px;display:grid}.lesson{background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:30px}.lesson h1{letter-spacing:-.05em;margin:16px 0 12px;font-size:clamp(30px,5vw,48px);line-height:1.12}.lesson-summary{color:var(--muted);font-size:17px}.block{border:1px solid var(--line);background:var(--surface-soft);border-radius:20px;margin:22px 0;padding:20px}.block h2{letter-spacing:-.03em;margin-bottom:8px;font-size:19px;line-height:1.35}.block p,.block li{color:#334155}.block ul{margin-bottom:0;padding-left:20px}.block-highlight{background:var(--yellow)}.block-example{background:var(--blue)}.block-warning{background:var(--red)}.block-tip{background:var(--green)}.block-story{background:var(--purple)}.block-summary{background:#ecfeff}.block-next{background:#f8fafc;border-style:dashed}.quiz-item{border:1px solid var(--line);background:#fff;border-radius:14px;margin:10px 0;padding:14px}.quiz-item p{margin-bottom:0}.sidebar{align-self:start;padding:20px;position:sticky;top:88px}.sidebar h2{font-size:20px;line-height:1.3}.sidebar h3{margin-bottom:12px;font-size:17px}.divider{border:0;border-top:1px solid var(--line);margin:18px 0}.day-list{gap:8px;display:grid}.day-link{border:1px solid var(--line);background:var(--surface);border-radius:14px;gap:2px;padding:11px 12px;display:grid}.day-link span{color:var(--muted);font-size:12px;font-weight:800}.day-link strong{font-size:14px;line-height:1.35}.day-link.active{border-color:var(--brand);background:#eff6ff}.footer{border-top:1px solid var(--line);color:var(--muted);padding:30px 0;font-size:14px}.footer-inner{flex-wrap:wrap;gap:8px;display:flex}.footer strong{color:var(--text)}@media (max-width:980px){.hero-grid,.course-grid,.plan-grid,.day-layout{grid-template-columns:1fr}.sidebar{position:static}}@media (max-width:640px){.container{width:min(100% - 24px,1120px)}.header-inner{flex-direction:column;align-items:flex-start;min-height:auto;padding:10px 0}.nav{justify-content:flex-start;width:100%;padding-bottom:2px}.nav a{background:var(--surface);border:1px solid var(--line);min-height:38px}.hero{padding:34px 0 22px}.hero h1{letter-spacing:-.055em;font-size:36px}.hero p,.lesson-summary{font-size:16px}.hero-card,.card,.panel,.plan-card{border-radius:20px}.section{padding:26px 0}.section-panel{padding:20px}.section-title{font-size:25px}.page-hero{padding:28px 0 12px}.breadcrumb{font-size:13px;line-height:1.55}.lesson{border-radius:22px;padding:20px}.lesson h1{font-size:30px}.block{border-radius:18px;margin:18px 0;padding:17px}.cta-row,.lesson-nav{grid-template-columns:1fr;display:grid}.lesson-nav span{display:none}.btn{width:100%;min-height:48px}.day-layout{padding-bottom:36px}}.section-head{justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:18px;display:flex}.text-link{color:var(--brand);white-space:nowrap;text-underline-offset:4px;font-weight:800;text-decoration:underline}.section-stats{padding:10px 0 26px}.stats-grid{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.stat-card{border:1px solid var(--line);background:var(--surface);border-radius:22px;padding:18px}.stat-card strong{letter-spacing:-.05em;font-size:30px;line-height:1;display:block}.stat-card span{color:var(--muted);margin-top:8px;font-weight:700;display:block}.category-chip-row{flex-wrap:wrap;gap:10px;display:flex}.category-chip-row-spaced{margin:8px 0 34px}.category-chip{border:1px solid var(--line);background:var(--surface);min-height:42px;color:var(--text);border-radius:999px;align-items:center;padding:8px 14px;font-size:14px;font-weight:800;display:inline-flex}.category-chip:hover{border-color:var(--brand);color:var(--brand)}.category-section-list{gap:40px;display:grid}.category-section{scroll-margin-top:96px}.course-card{flex-direction:column;min-height:100%;display:flex}.course-card .btn{margin-top:auto}.course-card-info{color:var(--muted);gap:6px;margin:8px 0 18px;font-size:13px;font-weight:700;display:grid}.course-card-info span:before{content:"•";color:var(--brand);margin-right:6px}.preview-plan-list{gap:18px;display:grid}.preview-plan{padding:22px}.preview-plan-head{justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;display:flex}.preview-plan-head h3{letter-spacing:-.03em;margin:0;font-size:22px}.preview-day-list{gap:10px;display:grid}.preview-day-link{border:1px solid var(--line);background:var(--surface);border-radius:16px;gap:3px;padding:14px;display:grid}.preview-day-link:hover{border-color:var(--brand);background:#eff6ff}.preview-day-link span{color:var(--brand);font-size:12px;font-weight:900}.preview-day-link strong{font-size:16px;line-height:1.35}.preview-day-link small{color:var(--muted);font-size:13px;line-height:1.5}.preview-note{color:var(--muted);margin:14px 0 0;font-size:14px}.mode-link-list{gap:8px;display:grid}.mode-link{border:1px solid var(--line);background:var(--surface-soft);min-height:40px;color:var(--text);border-radius:14px;align-items:center;padding:9px 12px;font-size:14px;font-weight:800;display:flex}.mode-link:hover{border-color:var(--brand);color:var(--brand)}@media (max-width:640px){.section-head{flex-direction:column;align-items:flex-start}.text-link{white-space:normal}.stats-grid{grid-template-columns:1fr}.stat-card{padding:16px}.category-chip-row{-webkit-overflow-scrolling:touch;flex-wrap:nowrap;padding-bottom:4px;overflow-x:auto}.category-chip{flex:none}.category-section-list{gap:32px}.preview-plan{padding:18px}.preview-plan-head{flex-direction:column;align-items:flex-start}.preview-day-link{padding:13px}}.block p,.block li,.lesson-summary,.preview-day-link small,.card p,.plan-card p,.lesson-summary,.block p,.preview-day-link small,.course-list-item p{white-space:pre-line}button.category-chip{cursor:pointer;font:inherit}.category-chip.active{border-color:var(--brand);color:var(--brand);background:#eff6ff}.hero-simple .hero-card h2,.continue-card h2,.progress-panel h2,.completion-card h2{letter-spacing:-.04em;margin-bottom:8px}.hero-action-card{gap:14px;display:grid}.search-panel{border:1px solid var(--line);background:var(--surface);border-radius:24px;padding:18px;box-shadow:0 20px 50px #0f172a0d}.search-label{letter-spacing:-.03em;margin-bottom:10px;font-weight:900;display:block}.course-search-input{border:1px solid var(--line);background:var(--bg);width:100%;min-height:52px;color:var(--text);border-radius:16px;outline:none;padding:13px 15px}.course-search-input:focus{border-color:var(--brand);box-shadow:0 0 0 4px #2563eb1f}.result-head{color:var(--muted);justify-content:space-between;align-items:center;gap:12px;margin:18px 0 12px;font-size:14px;display:flex}.result-head strong{color:var(--text);font-size:16px}.course-list{gap:12px;display:grid}.course-list-item{border:1px solid var(--line);background:var(--surface);border-radius:22px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px;padding:18px;display:grid}.course-list-item.compact{padding:16px}.course-list-main h3{letter-spacing:-.035em;margin-bottom:6px;font-size:20px;line-height:1.3}.course-list-main p{color:var(--muted);margin-bottom:10px;font-size:14px}.course-list-info{color:var(--muted);flex-wrap:wrap;gap:8px 14px;font-size:13px;font-weight:800;display:flex}.course-list-info span:before{content:"•";color:var(--brand);margin-right:6px}.course-list-actions{flex-direction:column;gap:8px;min-width:120px;display:flex}.compact-list .course-list-actions{min-width:108px}.empty-state{border:1px dashed var(--line);background:var(--surface);text-align:center;border-radius:24px;padding:28px}.empty-state p{color:var(--muted)}.continue-card,.progress-panel,.completion-card{border:1px solid var(--line);background:var(--surface);border-radius:24px;padding:20px;box-shadow:0 18px 45px #0f172a0d}.continue-card{justify-content:space-between;align-items:center;gap:18px;display:flex}.continue-card p,.progress-panel p,.completion-card p{color:var(--muted);margin-bottom:0}.progress-panel{gap:16px;display:grid}.progress-panel-head{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.progress-panel-head strong{color:var(--brand);font-size:34px;line-height:1}.progress-bar{background:var(--surface-soft);border-radius:999px;height:10px;overflow:hidden}.progress-bar span{border-radius:inherit;background:var(--brand);height:100%;display:block}.completion-card{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px;margin-top:28px;display:grid}.completion-actions{flex-direction:column;gap:8px;min-width:140px;display:flex}.btn-cancel{background:var(--red);color:#991b1b;border-color:#fecaca}.simple-steps{gap:12px;display:grid}.simple-steps div{border:1px solid var(--line);background:var(--surface);border-radius:18px;align-items:center;gap:12px;padding:16px;display:flex}.simple-steps strong{background:var(--brand);color:#fff;border-radius:12px;place-items:center;width:32px;height:32px;display:grid}.full-day-list{gap:8px}@media (max-width:640px){.search-panel{border-radius:20px;padding:15px}.course-search-input{min-height:50px}.result-head{flex-direction:column;align-items:flex-start}.course-list-item,.completion-card,.continue-card{grid-template-columns:1fr;align-items:stretch}.course-list-actions,.completion-actions{min-width:0}.continue-card .btn,.course-list-actions .btn,.completion-actions .btn{width:100%}.progress-panel-head{align-items:flex-start}.progress-panel-head strong{font-size:28px}}.compact-head{margin-bottom:10px}.recent-list{gap:8px;display:grid}.recent-link{border:1px solid var(--line);background:var(--surface);border-radius:18px;gap:3px;padding:14px 16px;display:grid}.recent-link span{color:var(--brand);font-size:12px;font-weight:900}.recent-link strong{letter-spacing:-.025em;font-size:15px;line-height:1.4}.preview-day-link.completed,.day-link.completed{background:#f0fdf4;border-color:#86efac}.preview-day-link.completed span,.day-link.completed span{color:#15803d}@media (max-width:640px){.recent-link{padding:13px 14px}.recent-link strong{font-size:14px}}.home-search{border:1px solid var(--line);background:var(--surface);border-radius:26px;gap:12px;padding:24px;display:grid;box-shadow:0 24px 70px #0f172a0f}.home-search label{letter-spacing:-.04em;font-size:20px;font-weight:900;line-height:1.35}.home-search-row{grid-template-columns:minmax(0,1fr) 92px;gap:10px;display:grid}.home-search input{border:1px solid var(--line);background:var(--bg);width:100%;min-height:52px;color:var(--text);border-radius:16px;outline:none;padding:13px 15px}.home-search input:focus{border-color:var(--brand);box-shadow:0 0 0 4px #2563eb1f}.home-search p{color:var(--muted);margin:0;font-size:14px}.continue-panel{border:1px solid var(--line);background:var(--surface);border-radius:24px;padding:20px;box-shadow:0 18px 45px #0f172a0d}.continue-list{gap:10px;display:grid}.continue-link{border:1px solid var(--line);background:var(--surface);border-radius:18px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:6px 12px;padding:15px 16px;display:grid}.continue-link:hover{border-color:var(--brand);background:#eff6ff}.continue-link span{color:var(--brand);grid-column:1/2;font-size:12px;font-weight:900}.continue-link strong{letter-spacing:-.03em;grid-column:1/2;font-size:16px;line-height:1.4}.continue-link em{color:var(--text);grid-area:1/2/3/3;font-size:14px;font-style:normal;font-weight:900}.btn-cancel:hover{background:#fecaca}@media (max-width:640px){.home-search{border-radius:22px;padding:18px}.home-search label{font-size:18px}.home-search-row{grid-template-columns:1fr}.continue-panel{border-radius:22px;padding:16px}.continue-link{grid-template-columns:1fr;padding:14px}.continue-link span,.continue-link strong,.continue-link em{grid-area:auto}.continue-link em{color:var(--brand)}}.hero-full{max-width:980px}.hero-full h1{max-width:860px}.hero-full p{max-width:720px}.home-discovery-panel{border:1px solid var(--line);background:var(--surface);border-radius:28px;gap:18px;padding:24px;display:grid;box-shadow:0 24px 70px #0f172a0f}.home-discovery-panel .home-search{box-shadow:none;background:0 0;border:0;border-radius:0;padding:0}.home-category-filter{border-top:1px solid var(--line);gap:10px;padding-top:16px;display:grid}.home-category-filter>span{color:var(--muted);font-size:14px;font-weight:900}@media (max-width:640px){.hero-full h1{font-size:40px}.home-discovery-panel{border-radius:22px;padding:18px}.home-category-filter .category-chip-row{-webkit-overflow-scrolling:touch;flex-wrap:nowrap;padding-bottom:4px;overflow-x:auto}.home-category-filter .category-chip{flex:none}}.course-status{color:var(--muted)}.empty-course-state{text-align:left;gap:12px;display:grid}.empty-course-state .btn{justify-self:start}@media (max-width:640px){.empty-course-state{text-align:center}.empty-course-state .btn{justify-self:stretch}}