:root{--primary: #16A34A;--primary-dark: #1E2A4A;--primary-strong: #15803D;--secondary: #232B54;--secondary-dark: #1a2140;--secondary-bg: #ECEEF6;--accent: #e8453c;--accent-text: #c62828;--hsk1: linear-gradient(135deg, #16A34A, #22C55E);--hsk1-solid: #16A34A;--hsk1-text: #15803D;--completed: #16A34A;--completed-bg: #E7F7EE;--in-progress: #232B54;--in-progress-bg: #ECEEF6;--not-started: #999;--not-started-bg: #f5f5f5;--error: #F44336;--error-bg: #ffebee;--warning: #FF9800;--warning-bg: #fff3e0;--bg: #F6F8F5;--card-bg: #fff;--text: #1A1F3D;--text-secondary: #5B6472;--border: #f0f0f0;--border-medium: #e8e8e8;--hanzi-red: #c62828;--shadow-card: 0 2px 8px rgba(0,0,0,.06);--shadow-hover: 0 6px 20px rgba(0,0,0,.1);--shadow-cta: 0 4px 15px rgba(22,163,74,.3);--shadow-header: 0 1px 4px rgba(0,0,0,.06);--radius-card: 16px;--radius-pill: 20px;--radius-badge: 12px;--radius-option: 14px;--max-width: 1200px}:root{--color-primary: var(--primary);--color-primary-dark: var(--primary-dark);--color-primary-strong: var(--primary-strong);--color-secondary: var(--secondary);--color-secondary-bg: var(--secondary-bg);--color-accent: var(--accent);--color-accent-text: var(--accent-text);--color-bg: var(--bg);--color-surface: var(--card-bg);--color-text: var(--text);--color-muted: var(--text-secondary);--color-border: var(--border);--radius-sm: 8px;--radius-md: var(--radius-badge);--radius-lg: var(--radius-card);--radius-xl: var(--radius-pill);--shadow-sm: var(--shadow-card);--shadow-md: var(--shadow-header);--shadow-lg: var(--shadow-hover);--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 40px}*{box-sizing:border-box}body{margin:0;min-width:320px;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--text);background:var(--bg)}a{color:inherit}button,input{font:inherit}.header{position:sticky;top:0;z-index:1000;height:72px;background:#fff;border-bottom:1px solid rgba(0,0,0,.06);box-shadow:0 4px 20px #00000003;transition:all .3s ease;display:flex;align-items:center}.header-inner{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:100%}.header-left{display:flex;align-items:center;gap:32px;height:100%}.logo-area{display:flex;align-items:center;gap:10px;text-decoration:none;transition:transform .2s ease;flex-shrink:0}.logo-area:hover{transform:translateY(-1px)}.logo-svg{filter:drop-shadow(0 4px 8px rgba(232,69,60,.15))}.logo-text{font-weight:800;font-size:19px;color:var(--primary-dark);letter-spacing:-.3px;display:flex;align-items:center}.logo-text .accent{color:var(--accent);background:linear-gradient(135deg,#e8453c,#ff7849);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin:0 4px}.nav-links.desktop-nav{display:flex;align-items:center;gap:6px;height:100%}.site-nav-link{white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 14px;border-radius:999px;color:#4b5563;font-weight:700;font-size:14px;line-height:1;text-decoration:none;transition:background .2s ease,color .2s ease,box-shadow .2s ease;border:none;background:transparent;cursor:pointer}.site-nav-link:hover{background:#f0faf3;color:#15803d}.site-nav-link.active{background:#dcf5e6;color:#15803d}.nav-link-desktop-only{display:inline-flex}.site-nav-more{position:relative;display:inline-flex;align-items:center;height:100%}.site-nav-more-trigger{gap:4px}.site-nav-more-trigger:after{content:"";display:none}.site-nav-dropdown{position:absolute;top:calc(100% + 12px);right:0;min-width:220px;padding:10px;border-radius:18px;background:#fff;border:1px solid rgba(15,23,42,.08);box-shadow:0 18px 45px #0f172a24;z-index:100;display:flex;flex-direction:column;gap:2px;animation:dropdownFadeIn .2s cubic-bezier(.16,1,.3,1)}.site-nav-dropdown .dropdown-item{display:flex;align-items:center;width:100%;padding:10px 16px;font-size:14px;font-weight:700;color:#4b5563;text-decoration:none;border-radius:10px;transition:all .2s ease;background:transparent;border:none;text-align:left;cursor:pointer}.site-nav-dropdown .dropdown-item:hover{background:#f0faf3;color:#15803d}.site-nav-dropdown .dropdown-item.active{background:#dcf5e6;color:#15803d}.site-nav-dropdown .dropdown-item-tablet-only{display:none}.header-right{display:flex;align-items:center;gap:16px;flex-shrink:0}.btn-login-text{border:none;background:none;color:#4b5563;font-weight:700;font-size:14px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;min-height:44px;line-height:1;padding:0 16px;border-radius:999px;transition:all .2s ease;white-space:nowrap}.btn-login-text:hover{background:#f3f4f6;color:var(--primary)}.header-cta-btn{background:linear-gradient(135deg,var(--primary) 0%,#22c55e 100%);color:#fff;border:none;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;min-height:44px;line-height:1;padding:0 20px;font-size:14px;font-weight:700;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 12px #16a34a33;white-space:nowrap}.header-cta-btn:hover{transform:translateY(-1px);box-shadow:0 6px 18px #16a34a4d;filter:brightness(1.05)}.header-cta-btn:active{transform:translateY(0)}.user-profile-dropdown{position:relative;display:inline-block}.avatar-btn{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--primary),#22c55e);color:#fff;font-size:15px;font-weight:700;border:2px solid #fff;box-shadow:0 2px 8px #16a34a33;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease}.avatar-btn:hover{transform:scale(1.05);box-shadow:0 4px 12px #16a34a4d}.dropdown-menu{position:absolute;top:calc(100% + 8px);right:0;width:260px;background:#fffffff2;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(0,0,0,.08);border-radius:16px;box-shadow:0 10px 30px #0000001a;padding:8px;z-index:1010;display:flex;flex-direction:column;animation:dropdownFadeIn .2s cubic-bezier(.16,1,.3,1)}@keyframes dropdownFadeIn{0%{opacity:0;transform:translateY(-8px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.dropdown-user-info{display:flex;align-items:center;gap:12px;padding:12px 14px}.dropdown-avatar-large{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),#22c55e);color:#fff;font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center;box-shadow:inset 0 2px 4px #0000001a}.dropdown-user-details{display:flex;flex-direction:column;overflow:hidden}.dropdown-user-label{font-size:11px;font-weight:700;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}.dropdown-user-email{font-size:13px;font-weight:600;color:var(--text);white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.dropdown-divider{height:1px;background:#0000000f;margin:8px 6px}.dropdown-item{display:flex;align-items:center;gap:10px;padding:10px 14px;font-size:14px;font-weight:600;color:var(--text-secondary);text-decoration:none;border:none;background:none;border-radius:10px;width:100%;text-align:left;cursor:pointer;transition:all .2s ease}.dropdown-item:hover{background:#0000000a;color:var(--text)}.dropdown-item.admin-item:hover{background:#16a34a14;color:var(--primary)}.dropdown-item.logout-item{color:var(--error)}.dropdown-item.logout-item:hover{background:var(--error-bg);color:var(--error)}.dropdown-icon{flex-shrink:0;opacity:.8}.nav-badge{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 5px;margin-left:6px;border-radius:9px;background:var(--accent);color:#fff;font-size:11px;font-weight:700;vertical-align:middle}.mobile-menu-btn{display:none;background:none;border:none;cursor:pointer;width:40px;height:40px;align-items:center;justify-content:center;border-radius:50%;transition:background .2s}.mobile-menu-btn:hover{background:#0000000a}.hamburger,.hamburger:before,.hamburger:after{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:all .25s ease;position:relative}.hamburger:before,.hamburger:after{content:"";position:absolute;left:0;width:20px}.hamburger:before{top:-6px}.hamburger:after{top:6px}.hamburger.open{background:transparent}.hamburger.open:before{top:0;transform:rotate(45deg)}.hamburger.open:after{top:0;transform:rotate(-45deg)}.mobile-menu-backdrop{display:none;position:fixed;right:0;bottom:0;left:0;top:72px;z-index:998;background:#00000026;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}.mobile-menu{display:none;position:absolute;top:100%;left:0;right:0;background:#fffffff5;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,0,0,.08);box-shadow:0 15px 30px #00000014;z-index:999;padding:16px;flex-direction:column;gap:6px;max-height:calc(100vh - 72px);overflow-y:auto}.mobile-menu .site-nav-link{display:flex;width:100%;padding:12px 20px;border-radius:12px;font-size:15px;font-weight:700;justify-content:flex-start}@media(max-width:1280px){.header-left{gap:16px}.nav-links.desktop-nav{gap:2px}.site-nav-link{padding:10px 12px}}@media(max-width:1100px){.header-left{gap:12px}.nav-link-desktop-only{display:none!important}.site-nav-dropdown .dropdown-item-tablet-only{display:flex!important}}@media(max-width:768px){.header{height:64px}.header-inner{padding:0 16px}.mobile-menu-backdrop{top:64px;display:block}.mobile-menu{display:flex}.desktop-nav{display:none!important}.mobile-menu-btn{display:flex}.header-cta-btn{padding:8px 14px;font-size:13px}.btn-login-text{padding:8px 12px;font-size:13px}}@media(max-width:480px){.header-right{gap:8px}.btn-login-text{display:none}}.btn{display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:var(--radius-pill);padding:10px 22px;font-weight:700;font-size:14px;cursor:pointer;text-decoration:none;transition:all .2s}.btn-sm{padding:6px 14px;font-size:13px}.btn-primary{background:linear-gradient(135deg,var(--primary),#22c55e);color:#fff;box-shadow:var(--shadow-cta)}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px #16a34a66}.btn-secondary{background:#eef8f1;color:var(--primary-dark)}.btn-secondary:hover{background:#d3f1de}.btn-outline{background:#fff;color:var(--text-secondary);border:1px solid var(--border-medium)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-block{width:100%}.text-btn{border:0;padding:0;color:var(--primary);background:transparent;font-weight:700;cursor:pointer;font-size:13px}.page-banner{padding:36px 0;color:#fff}.page-banner.hsk1{background:var(--hsk1)}.page-banner.hsk2{background:linear-gradient(135deg,#ff9800,#ffb74d)}.page-banner.hsk3{background:linear-gradient(135deg,var(--accent),#ff6b6b)}.page-banner.primary{background:linear-gradient(135deg,var(--primary),#22c55e)}.page-banner-inner{max-width:var(--max-width);margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:24px}.banner-text h1{font-size:28px;font-weight:800;margin:0 0 6px}.banner-text p{font-size:14px;opacity:.85;margin:0}.banner-stats{display:flex;gap:16px}.banner-stat{text-align:center;background:#ffffff26;border-radius:var(--radius-option);padding:14px 20px;min-width:80px}.banner-stat-num{font-size:22px;font-weight:800}.banner-stat-label{font-size:11px;opacity:.8;margin-top:2px}.page-shell{max-width:var(--max-width);margin:0 auto;padding:24px 20px}.page-shell.narrow{max-width:680px}.overall-progress{background:var(--card-bg);border-radius:var(--radius-option);padding:16px 20px;box-shadow:var(--shadow-card);border:1px solid var(--border);display:flex;align-items:center;gap:16px;margin-bottom:16px}.progress-label{font-size:13px;color:var(--text-secondary);font-weight:500;white-space:nowrap}.progress-bar-bg{flex:1;height:10px;background:var(--completed-bg);border-radius:5px;overflow:hidden}.progress-bar-fill{height:100%;background:var(--hsk1);border-radius:5px;transition:width .5s ease}.progress-pct{font-size:14px;font-weight:700;color:var(--hsk1-solid);white-space:nowrap}.level-tabs{display:flex;gap:10px;margin-bottom:20px}.level-tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:16px 12px;border-radius:var(--radius-card);border:2px solid var(--border-medium);background:var(--card-bg);cursor:pointer;transition:all .2s}.level-tab:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-card)}.level-tab.active{border-color:var(--primary);background:var(--in-progress-bg);box-shadow:0 0 0 3px #16a34a1f}.level-tab.active.hsk1{border-color:var(--hsk1-solid);background:var(--completed-bg);box-shadow:0 0 0 3px #16a34a1f}.level-tab.active.hsk2{border-color:#ff9800;background:var(--warning-bg);box-shadow:0 0 0 3px #ff98001f}.level-tab.active.hsk3{border-color:var(--accent);background:#ffebee;box-shadow:0 0 0 3px #e8453c1f}.level-tab-name{font-size:16px;font-weight:800;color:var(--text)}.level-tab-count{font-size:12px;font-weight:600;color:var(--text-secondary)}.filter-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}.filter-tab{padding:8px 18px;border-radius:var(--radius-pill);font-size:13px;font-weight:500;cursor:pointer;border:1px solid var(--border-medium);background:var(--card-bg);color:var(--text-secondary);transition:all .2s}.filter-tab:hover{border-color:var(--primary);color:var(--primary)}.filter-tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}.lesson-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}.lesson-card{background:var(--card-bg);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);border:1px solid var(--border);transition:transform .2s,box-shadow .2s;cursor:pointer;position:relative}.lesson-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}.lesson-card-top{padding:20px;display:flex;align-items:flex-start;gap:14px}.lesson-num{width:44px;height:44px;border-radius:var(--radius-badge);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;color:#fff;flex-shrink:0}.lesson-num.completed{background:var(--hsk1)}.lesson-num.studied{background:linear-gradient(135deg,var(--primary),#22c55e)}.lesson-num.not-started{background:#e0e0e0;color:var(--not-started)}.lesson-info{flex:1;min-width:0}.lesson-title{font-size:15px;font-weight:600;color:var(--text);margin:0 0 4px}.lesson-desc{font-size:12px;color:var(--text-secondary);line-height:1.4;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.lesson-meta{font-size:11px;color:var(--not-started);margin-top:6px}.lesson-score{font-size:11px;color:var(--completed);font-weight:600;margin-top:4px}.lesson-card-bottom{padding:0 20px 16px;display:flex;align-items:center;justify-content:space-between}.lesson-progress-bar{flex:1;height:6px;background:var(--border);border-radius:3px;overflow:hidden;margin-right:12px}.lesson-progress-fill{height:100%;border-radius:3px;transition:width .5s}.lesson-progress-fill.completed{background:var(--hsk1)}.lesson-progress-fill.studied{background:linear-gradient(90deg,var(--primary),#22c55e)}.status-pill{font-size:11px;font-weight:600;padding:3px 10px;border-radius:10px;white-space:nowrap}.status-pill.completed{background:var(--completed-bg);color:#15803d}.status-pill.studied{background:var(--in-progress-bg);color:#15803d}.status-pill.not-started{background:var(--not-started-bg);color:var(--not-started)}.lesson-badge{position:absolute;top:12px;right:12px;background:var(--warning);color:#fff;font-size:10px;font-weight:700;padding:3px 8px;border-radius:8px;text-transform:uppercase}.hero{background:linear-gradient(135deg,#e7f7ee,#f0f7ff,#e7f7ee);padding:60px 0}.hero-inner{max-width:var(--max-width);margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:48px}.hero-text{flex:1}.hero-text h1{font-size:36px;font-weight:800;color:var(--primary-dark);line-height:1.3;margin:0 0 12px}.hero-text h1 .highlight{color:var(--primary)}.hero-text>p{font-size:16px;color:var(--text-secondary);line-height:1.6;margin:0 0 24px}.hero-stats{display:flex;gap:24px;margin-top:32px}.hero-stat{text-align:center}.hero-stat-num{font-size:24px;font-weight:800;color:var(--primary)}.hero-stat-label{font-size:12px;color:var(--text-secondary);margin-top:2px}.hero-card{flex:0 0 340px;background:var(--card-bg);border-radius:20px;box-shadow:0 8px 32px #0000001a;padding:24px}.hero-card-header{background:var(--hsk1);border-radius:var(--radius-option);padding:20px;color:#fff;margin-bottom:16px}.hero-card-level{font-size:12px;opacity:.8;text-transform:uppercase;letter-spacing:1px}.hero-card-title{font-size:20px;font-weight:700;margin-top:4px}.hero-card-desc{font-size:13px;opacity:.8;margin-top:4px}.hero-vocab-preview{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--border)}.hero-vocab-preview:last-child{border-bottom:none}.hanzi-box{min-width:48px;width:auto;height:48px;background:#fff5f5;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--hanzi-red);font-weight:600;padding:0 8px;white-space:nowrap;box-sizing:border-box}.vocab-pinyin{font-size:13px;color:var(--primary);font-weight:500}.vocab-meaning{font-size:13px;color:var(--text-secondary);margin-top:2px}.features-section{max-width:var(--max-width);margin:0 auto;padding:48px 20px}.section-label{text-align:center;font-size:11px;text-transform:uppercase;letter-spacing:2px;color:var(--text-secondary);margin-bottom:8px}.features-section h2{text-align:center;font-size:28px;font-weight:700;color:var(--primary-dark);margin:0 0 8px}.features-section .subtitle{text-align:center;color:var(--text-secondary);font-size:15px;margin:0 0 36px}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.feature-card{background:var(--card-bg);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-card);border:1px solid var(--border);transition:transform .2s,box-shadow .2s;cursor:pointer;text-decoration:none;color:inherit;display:block}.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}.feature-icon{width:52px;height:52px;border-radius:var(--radius-option);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:14px}.feature-card h3{font-size:16px;font-weight:600;color:var(--text);margin:0 0 6px}.feature-card p{font-size:13px;color:var(--text-secondary);line-height:1.5;margin:0}.feature-count{font-size:12px;color:var(--primary);font-weight:600;margin-top:10px}.quiz-wrapper{max-width:680px;margin:0 auto;padding:32px 20px}.quiz-header{background:var(--card-bg);border-radius:var(--radius-card);padding:20px 24px;box-shadow:var(--shadow-card);border:1px solid var(--border);margin-bottom:20px}.quiz-header-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.quiz-title{font-size:18px;font-weight:700;color:var(--primary-dark)}.quiz-counter{background:var(--in-progress-bg);color:var(--primary);font-size:13px;font-weight:700;padding:4px 12px;border-radius:12px}.quiz-progress-bar{height:8px;background:var(--in-progress-bg);border-radius:4px;overflow:hidden}.quiz-progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),#22c55e);border-radius:4px;transition:width .5s ease}.quiz-score-inline{display:flex;gap:16px;margin-top:10px}.score-correct{color:var(--completed);font-size:12px;font-weight:600}.score-wrong{color:var(--error);font-size:12px;font-weight:600}.question-card{background:var(--card-bg);border-radius:20px;overflow:hidden;box-shadow:0 4px 16px #00000014;border:1px solid var(--border);margin-bottom:20px}.question-type-bar{padding:12px 24px;color:#fff;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:1px;display:flex;align-items:center;gap:8px}.question-type-bar.meaning{background:linear-gradient(135deg,var(--primary),#22c55e)}.question-type-bar.pinyin{background:linear-gradient(135deg,var(--warning),#FFB74D)}.question-body{padding:32px 24px;text-align:center}.question-hanzi{font-size:64px;color:var(--hanzi-red);font-weight:600;line-height:1.2}.question-pinyin{font-size:18px;color:var(--primary);font-weight:500;margin-top:8px}.question-prompt{font-size:16px;color:var(--text-secondary);margin-top:12px}.answer-list{padding:0 24px 28px;display:flex;flex-direction:column;gap:10px}.answer-btn{display:flex;align-items:center;gap:14px;padding:16px 20px;border-radius:var(--radius-option);cursor:pointer;border:2px solid var(--border-medium);background:var(--card-bg);transition:all 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var(--border)}.result-emoji{font-size:64px;margin-bottom:16px}.result-title{font-size:24px;font-weight:800;color:var(--primary-dark);margin-bottom:8px}.result-subtitle{font-size:15px;color:var(--text-secondary);margin-bottom:24px}.result-score-ring{width:120px;height:120px;border-radius:50%;margin:0 auto 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1.25rem;border-radius:9999px;font-size:.925rem;font-weight:600;box-shadow:0 2px 8px #ea580c0d}.leaderboard-week-bar{display:flex;justify-content:space-between;align-items:center;background:#fff;border:1px solid var(--border, #e5e7eb);border-radius:16px;padding:.75rem 1.25rem;margin-bottom:2rem;box-shadow:0 2px 10px #00000005}.leaderboard-week-btn{background:transparent;border:1px solid var(--border, #e5e7eb);border-radius:10px;padding:.5rem 1rem;font-weight:600;color:var(--text-secondary, #4b5563);cursor:pointer;transition:all .2s ease;display:flex;align-items:center;gap:.25rem}.leaderboard-week-btn:hover:not(:disabled){border-color:var(--lb-primary-teal);color:var(--lb-primary-teal);background:var(--lb-teal-bg)}.leaderboard-week-btn:disabled{opacity:.4;cursor:not-allowed}.leaderboard-week-info{display:flex;align-items:center;gap:.75rem}.leaderboard-week-label{font-size:1.15rem;font-weight:700;color:var(--text-main, #1f2937)}.leaderboard-current-badge{background:var(--lb-teal-bg);color:var(--lb-primary-teal);border:1px solid var(--lb-teal-border);padding:.25rem .6rem;border-radius:9999px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em}.leaderboard-podium{display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:1.5rem;align-items:flex-end;margin-bottom:3rem;padding-top:1rem}.leaderboard-podium-card{background:#fff;border:1px solid var(--border, #e5e7eb);border-radius:20px;padding:1.5rem 1rem 2rem;text-align:center;box-shadow:0 4px 15px #00000005;transition:transform .3s ease,box-shadow .3s ease;position:relative}.leaderboard-podium-card:hover{transform:translateY(-5px);box-shadow:0 10px 25px #0000000d}.leaderboard-podium-card.rank-1{order:2;border-color:var(--lb-orange-border);background:linear-gradient(180deg,#ffffff 0%,var(--lb-orange-bg) 100%);padding:2.25rem 1.25rem 2.5rem;box-shadow:0 8px 25px #ea580c14}.leaderboard-podium-card.rank-2{order:1}.leaderboard-podium-card.rank-3{order:3}.podium-avatar-wrapper{position:relative;width:72px;height:72px;margin:0 auto 1rem}.rank-1 .podium-avatar-wrapper{width:90px;height:90px}.podium-avatar{width:100%;height:100%;border-radius:50%;object-fit:cover;border:3px solid #ffffff;box-shadow:0 4px 10px #0000001a;background:var(--lb-teal-bg);display:flex;align-items:center;justify-content:center;font-size:1.75rem;font-weight:700;color:var(--lb-primary-teal)}.rank-1 .podium-avatar{border-color:var(--lb-gold);font-size:2.25rem}.rank-2 .podium-avatar{border-color:var(--lb-silver)}.rank-3 .podium-avatar{border-color:var(--lb-bronze)}.podium-crown{position:absolute;top:-24px;left:50%;transform:translate(-50%) rotate(-5deg);display:flex;align-items:center;justify-content:center;filter:drop-shadow(0 2px 4px 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#4b5563);display:flex;justify-content:center;gap:.5rem}.podium-stats>span{display:inline-flex;align-items:center;gap:.25rem}.leaderboard-table-card{background:#fff;border:1px solid var(--border, #e5e7eb);border-radius:20px;padding:1.5rem;box-shadow:0 4px 15px #00000003;margin-bottom:2rem}.leaderboard-table-title{font-size:1.25rem;font-weight:700;color:var(--text-main, #1f2937);margin:0 0 1.25rem}.leaderboard-table{width:100%;border-collapse:collapse}.leaderboard-table th{padding:.75rem 1rem;text-align:left;font-weight:600;color:var(--text-secondary, #4b5563);border-bottom:2px solid var(--border, #e5e7eb);font-size:.875rem}.leaderboard-table td{padding:1rem;border-bottom:1px solid var(--border, #f3f4f6);vertical-align:middle}.leaderboard-table tbody tr:hover{background:var(--lb-teal-bg)}.leaderboard-table tr.current-user-row{background:var(--lb-orange-bg)!important}.row-rank{font-weight:700;font-size:1.05rem;color:var(--text-secondary, #4b5563);width:50px}.row-user{display:flex;align-items:center;gap:.75rem}.row-avatar{width:38px;height:38px;border-radius:50%;background:var(--lb-teal-bg);color:var(--lb-primary-teal);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1rem;border:1px solid var(--lb-teal-border)}.row-name{font-weight:600;color:var(--text-main, #1f2937)}.current-user-row .row-name{color:var(--lb-accent-orange);font-weight:700}.row-score{font-weight:800;color:var(--lb-accent-orange);font-size:1.1rem}.row-days{color:var(--text-secondary, #4b5563);font-weight:500}.my-leaderboard-card{background:linear-gradient(135deg,var(--lb-orange-bg) 0%,#ffffff 100%);border:2px solid var(--lb-orange-border);border-radius:20px;padding:1.5rem;margin-bottom:3rem;display:flex;justify-content:space-between;align-items:center;box-shadow:0 4px 15px #ea580c0a}.my-lb-left{display:flex;align-items:center;gap:1.25rem}.my-lb-rank-badge{background:var(--lb-accent-orange);color:#fff;font-size:1.5rem;font-weight:800;width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 10px #ea580c33}.my-lb-info h3{font-size:1.15rem;font-weight:700;margin:0 0 .25rem}.my-lb-info p{font-size:.9rem;color:var(--text-secondary, #4b5563);margin:0}.my-lb-score{text-align:right}.my-lb-score-val{font-size:1.75rem;font-weight:900;color:var(--lb-accent-orange);line-height:1}.my-lb-score-label{font-size:.8rem;font-weight:500;color:var(--text-secondary, #4b5563)}.leaderboard-history{margin-bottom:4rem}.leaderboard-history h2{font-size:1.5rem;font-weight:800;color:var(--text-main, #1f2937);margin:0 0 1.25rem}.history-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1.25rem}.history-card{background:#fff;border:1px solid var(--border, #e5e7eb);border-radius:16px;padding:1.25rem;box-shadow:0 2px 8px #00000003;transition:transform .2s ease}.history-card:hover{transform:translateY(-2px)}.history-week{font-size:.85rem;font-weight:700;color:var(--lb-primary-teal);margin-bottom:.75rem;text-transform:uppercase;letter-spacing:.05em}.history-winner{display:flex;align-items:center;gap:.5rem;margin-bottom:.75rem}.history-winner-avatar{width:28px;height:28px;border-radius:50%;background:var(--lb-orange-bg);color:var(--lb-accent-orange);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.75rem}.history-winner-name{font-weight:600;font-size:.925rem;color:var(--text-main, #1f2937);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.history-stats{display:flex;justify-content:space-between;font-size:.85rem;border-top:1px dashed var(--border, #e5e7eb);padding-top:.75rem}.history-score{font-weight:700;color:var(--lb-accent-orange)}.history-days{color:var(--text-secondary, #4b5563);display:inline-flex;align-items:center;gap:.25rem}.leaderboard-empty-state{text-align:center;padding:4rem 2rem;background:#fff;border:1px dashed var(--border, #e5e7eb);border-radius:20px}.empty-icon{display:flex;align-items:center;justify-content:center;color:var(--primary);margin-bottom:1rem}.leaderboard-empty-state h3{font-size:1.25rem;font-weight:700;margin:0 0 .5rem}.leaderboard-empty-state p{color:var(--text-secondary, #4b5563);margin:0 0 1.5rem}.leaderboard-cta-section{text-align:center;background:linear-gradient(135deg,#ffffff 0%,var(--lb-teal-bg) 100%);border:1px solid var(--lb-teal-border);border-radius:24px;padding:3rem 2rem;box-shadow:0 4px 20px #16a34a08}.leaderboard-cta-section h2{font-size:1.75rem;font-weight:800;color:var(--lb-primary-teal);margin:0 0 .5rem}.leaderboard-cta-section p{color:var(--text-secondary, #4b5563);margin:0 0 2rem;font-size:1.05rem}.cta-buttons{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}.cta-btn{display:inline-flex;align-items:center;gap:.5rem;padding:.875rem 1.75rem;border-radius:12px;font-weight:700;text-decoration:none;transition:all .2s ease;font-size:1rem;cursor:pointer}.cta-btn.primary{background:var(--lb-primary-teal);color:#fff;box-shadow:0 4px 12px #16a34a40}.cta-btn.primary:hover{background:var(--lb-primary-teal-light);transform:translateY(-2px);box-shadow:0 6px 15px #16a34a4d}.cta-btn.secondary{background:#fff;color:var(--lb-primary-teal);border:1px solid var(--lb-primary-teal)}.cta-btn.secondary:hover{background:var(--lb-teal-bg);transform:translateY(-2px)}@media(max-width:768px){.leaderboard-podium{grid-template-columns:1fr;gap:1.5rem;align-items:stretch}.leaderboard-podium-card.rank-1{order:1;padding:2rem 1.25rem}.leaderboard-podium-card.rank-2{order:2}.leaderboard-podium-card.rank-3{order:3}.leaderboard-table th:nth-child(3),.leaderboard-table td:nth-child(3),.leaderboard-table th:nth-child(4),.leaderboard-table td:nth-child(4){display:none}.my-leaderboard-card{flex-direction:column;text-align:center;gap:1.25rem}.my-lb-score{text-align:center}.cta-buttons{flex-direction:column}.cta-btn{width:100%;justify-content:center}}.auth-divider{display:flex;align-items:center;text-align:center;margin:16px 0;color:var(--text-secondary);font-size:13px}.auth-divider:before,.auth-divider:after{content:"";flex:1;border-bottom:1px solid var(--border-medium)}.auth-divider:before{margin-right:.5em}.auth-divider:after{margin-left:.5em}.btn-google{background-color:#fff;color:#3c4043;border:1px solid #dadce0;display:flex;align-items:center;justify-content:center;gap:8px;font-weight:500;transition:background-color .2s,border-color .2s,box-shadow .2s}.btn-google:hover{background-color:#f8f9fa;border-color:#c9efd7;box-shadow:0 1px 2px #3c40434d,0 1px 3px 1px #3c404326}.btn-google:active{background-color:#eee}.google-icon{display:block}.testimonials-section{max-width:var(--max-width);margin:60px auto;padding:0 20px;text-align:center}.testimonials-section h2{font-size:28px;font-weight:700;color:var(--primary-dark);margin-bottom:8px}.testimonials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-top:36px}.testimonial-card{background:var(--card-bg);border-radius:var(--radius-card);padding:24px;box-shadow:0 8px 30px #0000000d;text-align:left;border:1px solid var(--border);transition:transform .3s}.testimonial-card:hover{transform:translateY(-5px);box-shadow:0 12px 40px #00000014}.testimonial-avatar{font-size:40px;margin-bottom:16px}.testimonial-content{font-size:15px;color:var(--text-secondary);line-height:1.6;font-style:italic;margin-bottom:16px}.testimonial-author{font-weight:700;color:var(--primary-dark);display:block}.testimonial-author span{font-weight:400;color:var(--text-secondary);font-size:13px;margin-left:6px}.cta-section{max-width:var(--max-width);margin:80px auto 40px;padding:48px 24px;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-strong) 100%);border-radius:24px;color:#fff;text-align:center;box-shadow:0 20px 40px #16a34a33}.cta-section h2{font-size:32px;font-weight:800;margin-bottom:16px;color:#fff}.cta-section p{font-size:18px;opacity:.9;margin-bottom:32px;max-width:600px;margin-left:auto;margin-right:auto;line-height:1.6}.cta-section .btn{background:#fff;color:var(--primary-dark);font-size:16px;padding:14px 32px;border-radius:var(--radius-pill);font-weight:700;display:inline-block;transition:all .2s}.cta-section .btn:hover{transform:scale(1.05);box-shadow:0 8px 20px #0003}.starter-cta{max-width:var(--max-width);margin:28px auto 0;padding:0 20px}.starter-cta-inner{background:linear-gradient(135deg,var(--hsk1-solid),#22c55e);border-radius:24px;padding:32px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:28px;box-shadow:0 14px 34px #16a34a47}.starter-cta-text{flex:1;min-width:0}.starter-cta-eyebrow{display:inline-block;background:#fff3;border-radius:var(--radius-pill);padding:5px 14px;font-size:13px;font-weight:700;margin-bottom:14px}.starter-cta-text h2{font-size:28px;font-weight:800;margin:0 0 10px;color:#fff}.starter-cta-text p{font-size:15px;line-height:1.6;opacity:.95;margin:0 0 20px;max-width:560px}.starter-cta-btn{background:#fff;color:var(--hsk1-text);box-shadow:0 6px 16px #00000026}.starter-cta-btn:hover{background:#fff;transform:translateY(-1px);box-shadow:0 8px 20px #0003}.starter-cta-preview{flex-shrink:0;background:#ffffff29;border-radius:var(--radius-card);padding:22px 30px;text-align:center;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.starter-cta-hanzi{font-size:48px;font-weight:800;line-height:1}.starter-cta-pinyin{font-size:18px;margin-top:8px;opacity:.95}.starter-cta-meaning{font-size:14px;margin-top:4px;opacity:.85}@media(max-width:720px){.starter-cta-inner{flex-direction:column;text-align:center;padding:26px 20px}.starter-cta-text p{margin-left:auto;margin-right:auto}.starter-cta-text h2{font-size:24px}}.sq-shell{max-width:560px}.sq-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}.sq-title{font-size:20px;font-weight:800;color:var(--primary-dark);margin:0}.sq-meta{display:flex;align-items:center;gap:10px}.sq-step-count{font-size:14px;font-weight:700;color:var(--text-secondary)}.sq-xp-badge{background:var(--warning-bg);color:var(--warning);border-radius:var(--radius-pill);padding:4px 12px;font-size:13px;font-weight:800}.sq-progress-bar{height:10px;background:var(--completed-bg);border-radius:5px;overflow:hidden;margin-bottom:20px}.sq-progress-fill{height:100%;background:var(--hsk1);border-radius:5px;transition:width .4s ease}.sq-card{background:var(--card-bg);border-radius:var(--radius-card);box-shadow:var(--shadow-card);border:1px solid var(--border);padding:24px;text-align:center}.sq-card-type{font-size:13px;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:.04em;margin-bottom:16px}.sq-hanzi{font-size:56px;font-weight:800;color:var(--hanzi-red);line-height:1.1}.sq-hanzi-sentence{font-size:36px}.sq-pinyin{font-size:20px;color:var(--text);margin-top:8px;font-weight:600}.sq-meaning{font-size:15px;color:var(--text-secondary);margin-top:6px}.sq-audio-row{margin-top:16px}.sq-audio-btn{display:inline-flex;align-items:center;gap:8px;background:var(--in-progress-bg);color:var(--primary);border:none;border-radius:var(--radius-pill);padding:10px 20px;font-size:14px;font-weight:700;cursor:pointer;transition:all .2s}.sq-audio-btn:hover{background:#d3f1de}.sq-question{font-size:17px;font-weight:600;color:var(--text);margin:20px 0 16px}.sq-instruction{font-size:16px;font-weight:600;color:var(--text);margin:0 0 18px}.sq-options{display:flex;flex-direction:column;gap:10px}.sq-option{display:flex;align-items:center;gap:12px;width:100%;background:var(--card-bg);border:2px solid var(--border-medium);border-radius:var(--radius-option);padding:14px 16px;font-size:15px;font-weight:600;color:var(--text);cursor:pointer;transition:all .2s;text-align:left}.sq-option:hover:not(:disabled){border-color:var(--primary);background:#eef8f1}.sq-option:disabled{cursor:default}.sq-option.selected{border-color:var(--primary);background:var(--in-progress-bg)}.sq-option.correct{border-color:var(--completed);background:var(--completed-bg)}.sq-option.wrong{border-color:var(--error);background:var(--error-bg)}.sq-option-letter{width:30px;height:30px;flex-shrink:0;border-radius:8px;background:var(--not-started-bg);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800}.sq-option.selected .sq-option-letter{background:var(--primary);color:#fff}.sq-option.correct .sq-option-letter{background:var(--completed);color:#fff}.sq-option.wrong .sq-option-letter{background:var(--error);color:#fff}.sq-option-text{flex:1}.sq-option-mark{font-size:18px;font-weight:800}.sq-option.correct .sq-option-mark{color:var(--completed)}.sq-option.wrong .sq-option-mark{color:var(--error)}.sq-sentence-slot{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;align-items:center;min-height:64px;padding:12px;border:2px dashed var(--border-medium);border-radius:var(--radius-option);margin-bottom:18px}.sq-sentence-slot.correct{border-color:var(--completed);border-style:solid;background:var(--completed-bg)}.sq-sentence-slot.wrong{border-color:var(--error);border-style:solid;background:var(--error-bg)}.sq-sentence-placeholder{color:var(--not-started);font-size:14px}.sq-blocks{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}.sq-block{background:var(--card-bg);border:2px solid var(--border-medium);border-radius:var(--radius-option);padding:12px 18px;font-size:24px;font-weight:700;color:var(--hanzi-red);cursor:pointer;transition:all .2s;min-width:52px}.sq-block:hover:not(:disabled){border-color:var(--primary);background:#eef8f1;transform:translateY(-2px)}.sq-block:disabled{opacity:.35;cursor:default}.sq-block-in-sentence{border-color:var(--primary);background:var(--in-progress-bg)}.sq-speak-done{margin-top:22px}.sq-feedback{display:flex;align-items:center;gap:10px;border-radius:var(--radius-option);padding:14px 16px;margin-top:16px;font-size:14px;font-weight:600;text-align:left}.sq-feedback.correct{background:var(--completed-bg);color:#15803d}.sq-feedback.wrong{background:var(--error-bg);color:#c62828}.sq-feedback-icon{flex-shrink:0;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;color:#fff}.sq-feedback.correct .sq-feedback-icon{background:var(--completed)}.sq-feedback.wrong .sq-feedback-icon{background:var(--error)}.sq-actions{display:flex;gap:12px;margin-top:20px}.sq-actions .btn{flex:1}.sq-intro,.sq-complete{padding:36px 28px}.sq-intro h1,.sq-complete h1{font-size:24px;font-weight:800;color:var(--primary-dark);margin:12px 0 10px}.sq-intro p{color:var(--text-secondary);margin:0 0 24px}.sq-badge-emoji{font-size:64px;line-height:1}.sq-intro-actions{display:flex;flex-direction:column;gap:10px}.sq-complete-sub{color:var(--text-secondary);font-size:15px;line-height:1.6;margin:0 0 20px}.sq-xp-total{display:inline-block;background:var(--warning-bg);color:var(--warning);border-radius:var(--radius-pill);padding:8px 22px;font-size:22px;font-weight:800;margin-bottom:22px}.sq-achievements{list-style:none;padding:0;margin:0 0 26px;text-align:left;display:flex;flex-direction:column;gap:10px}.sq-achievements li{display:flex;align-items:center;gap:10px;background:var(--bg);border-radius:var(--radius-option);padding:12px 16px;font-size:14px;font-weight:600;color:var(--text)}.sq-achievement-check{flex-shrink:0;width:22px;height:22px;border-radius:50%;background:var(--completed);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800}.sq-complete-actions{display:flex;flex-direction:column;gap:10px}.sq-signup-hint{font-size:13px;color:var(--text-secondary);margin:16px 0 0}@media(max-width:480px){.sq-card{padding:20px 16px}.sq-hanzi{font-size:46px}.sq-hanzi-sentence{font-size:30px}.sq-actions{flex-direction:column}}.sq-explanation{margin-top:24px;padding-top:20px;border-top:1px solid var(--border);text-align:left;font-size:15px;color:var(--text);line-height:1.6}.sq-example{margin-top:16px;background:var(--bg);padding:16px;border-radius:var(--radius-option);border:1px solid var(--border-medium)}.sq-example p{margin:0}.sq-example-hanzi{font-size:20px;font-weight:700;color:var(--hanzi-red);margin-bottom:4px!important}.sq-example-pinyin{font-size:14px;color:var(--text);font-weight:600;margin-bottom:6px!important}.sq-example-meaning{font-size:14px;color:var(--text-secondary)}.lp-shell{display:flex;flex-direction:column;gap:20px}.lp-streak{display:inline-flex;align-items:center;gap:6px;background:var(--completed-bg);color:var(--completed);padding:6px 14px;border-radius:var(--radius-pill);font-weight:600;align-self:flex-start}.lp-streak-count{font-size:1.1rem}.lp-streak-label{color:var(--text-secondary);font-weight:500}.lp-map-header{display:flex;flex-direction:column;gap:8px}.lp-map-goal,.lp-progress{color:var(--text-secondary);margin:0}.lp-day-list{display:flex;flex-direction:column;gap:12px}.lp-day-card{display:flex;align-items:center;gap:14px;padding:16px;border:1px solid var(--border);border-radius:var(--radius-card);background:#fff;box-shadow:var(--shadow-card);text-decoration:none;color:var(--text);transition:box-shadow .15s ease,transform .15s ease}.lp-day-card:hover{box-shadow:var(--shadow-hover)}.lp-day-body{flex:1}.lp-day-body h3{margin:0 0 2px;font-size:1rem}.lp-day-body p{margin:0;color:var(--text-secondary);font-size:.9rem}.lp-day-icon{display:flex;align-items:center;justify-content:center;color:var(--primary)}.lp-day-available{border-color:var(--primary)}.lp-day-cta{color:var(--primary);font-weight:600}.lp-day-completed .lp-day-icon{color:var(--completed)}.lp-day-tag{color:var(--completed);font-weight:600;font-size:.85rem}.lp-day-locked{opacity:.55;cursor:not-allowed;box-shadow:none}.lp-onboarding-step{display:flex;flex-direction:column;gap:16px}.lp-onboarding-options{display:flex;flex-direction:column;gap:10px}.lp-onboarding-option{padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius-option, 14px);background:#fff;text-align:left;font-size:1rem;cursor:pointer}.lp-onboarding-option:hover{border-color:var(--primary)}.lp-flashcard{display:flex;flex-direction:column;align-items:center;gap:14px}.lp-flashcard-face{width:100%;min-height:200px;border:1px solid var(--border);border-radius:var(--radius-card);background:#fff;box-shadow:var(--shadow-card);cursor:pointer;display:flex;align-items:center;justify-content:center}.lp-flashcard-hanzi{font-size:3rem}.lp-flashcard-hint{color:var(--text-secondary);font-size:.85rem;margin-top:8px}.lp-flashcard-pinyin{font-size:1.4rem;color:var(--primary)}.lp-flashcard-meaning{font-size:1.1rem;margin-top:6px}.lp-card-nav{display:flex;gap:10px;justify-content:space-between}.lp-complete,.lp-day-done{text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px}.lp-badge-emoji{font-size:3rem}.lp-badge{background:var(--accent);color:#fff;padding:8px 18px;border-radius:var(--radius-pill);font-weight:700}.lp-xp{font-size:1.4rem;font-weight:700;color:var(--primary)}.lp-day-done-actions{display:flex;flex-direction:column;gap:10px;width:100%}.lp-complete .btn{width:100%}.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px;margin-top:24px;margin-bottom:48px}.blog-card{background:var(--card-bg);border:1px solid var(--border-medium);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:all .3s ease}.blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--primary)}.blog-card-link-wrapper{text-decoration:none;color:inherit;display:flex;flex-direction:column;height:100%}.blog-card-image-wrapper{width:100%;height:200px;overflow:hidden;position:relative;background:linear-gradient(135deg,#ff8a00,#e52e71)}.blog-card-image{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;display:block}.blog-card:hover .blog-card-image{transform:scale(1.05)}.blog-card-image-fallback{width:100%;height:100%;background:linear-gradient(135deg,#ff8a00,#e52e71)}.blog-card-content{padding:20px;display:flex;flex-direction:column;flex-grow:1}.blog-card-category{font-size:11px;text-transform:uppercase;font-weight:700;color:var(--accent-text);margin-bottom:8px;display:inline-block}.blog-card-title{font-size:18px;font-weight:800;line-height:1.4;margin:0 0 10px;color:var(--text)}.blog-card-excerpt{font-size:14px;color:var(--text-secondary);line-height:1.5;margin:0 0 20px;flex-grow:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;text-overflow:ellipsis}.blog-card-meta{display:flex;align-items:center;font-size:12px;color:var(--text-secondary);font-weight:500}.blog-card-author{font-weight:600;color:var(--text)}.blog-card-dot{margin:0 6px}.blog-card-date{color:var(--text-secondary)}.blog-controls{display:flex;flex-direction:column;gap:16px;margin-top:16px;margin-bottom:24px}@media(min-width:768px){.blog-controls{flex-direction:row;justify-content:space-between;align-items:center}}.blog-search-input{width:100%;max-width:320px;padding:10px 16px;border-radius:var(--radius-pill);border:1px solid var(--border-medium);font-size:14px;background:var(--card-bg);color:var(--text);transition:all .2s}.blog-search-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #16a34a26}.blog-cta{background:linear-gradient(135deg,var(--primary-strong),var(--primary));color:#fff;padding:64px 20px;text-align:center;border-top:1px solid var(--border)}.blog-cta-inner{max-width:600px;margin:0 auto}.blog-cta-badge{background:#ffffff26;border-radius:var(--radius-pill);padding:6px 14px;font-size:11px;font-weight:700;text-transform:uppercase;display:inline-block;margin-bottom:16px}.blog-cta h2{font-size:32px;font-weight:800;margin:0 0 12px}.blog-cta p{font-size:16px;line-height:1.6;margin:0 0 32px;opacity:.9}.blog-cta-actions{display:flex;justify-content:center}.blog-cta .btn-primary{background:#fff;color:var(--primary-dark);box-shadow:0 4px 15px #ffffff1a}.blog-cta .btn-primary:hover{box-shadow:0 6px 20px #ffffff40}.blog-empty-state{text-align:center;padding:64px 20px;background:var(--card-bg);border:1px solid var(--border-medium);border-radius:var(--radius-card);margin:24px 0 48px}.empty-icon{font-size:48px;margin-bottom:16px}.blog-empty-state h3{margin:0 0 8px;font-size:20px;font-weight:700}.blog-empty-state p{margin:0;color:var(--text-secondary)}.blog-post-article{background:var(--card-bg);margin-bottom:48px}.blog-post-header{background:#f8f9fa;border-bottom:1px solid var(--border-medium);padding:48px 20px}.blog-post-header-inner{max-width:740px;margin:0 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#f5f5f5)}.lessons-v2-card.locked:hover{opacity:1}.lessons-v2-card.locked .lessons-v2-card-thumbnail{filter:grayscale(.5);opacity:.7}:root{--admin-bg: #f3f6fa;--admin-card-bg: #ffffff;--admin-border: #e5eaf0;--admin-border-focus: #16a34a;--admin-text-main: #111827;--admin-text-secondary: #6b7280;--status-saved-bg: #e7f7ee;--status-saved-text: #15803d;--status-dirty-bg: #fff3e0;--status-dirty-text: #e65100;--status-saving-bg: #e7f7ee;--status-saving-text: #16a34a;--status-error-bg: #ffebee;--status-error-text: #c62828}.admin-slide-editor-root-layout{height:100vh;width:100vw;background-color:var(--admin-bg);color:var(--admin-text-main);display:flex;flex-direction:column;overflow:hidden;font-family:system-ui,-apple-system,sans-serif}.top-action-bar{height:60px;background-color:var(--admin-card-bg);border-bottom:1px solid var(--admin-border);display:grid;grid-template-columns:240px 1fr auto;align-items:center;padding:0 20px;z-index:10;box-shadow:0 1px 3px 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