:root{--bg: #f4efe4;--bg-subtle: #eae3d3;--bg-card: #fcfbf7;--bg-card-hover: #ffffff;--bg-card-tint: #ede6d6;--ink: #1b1a17;--ink-secondary: #4a473e;--ink-muted: #797365;--ink-faint: #adA798;--line: #ded7c6;--line-strong: #c8bfae;--accent: #1e3d34;--accent-hover: #142b24;--accent-light: #e6ede8;--accent-contrast: #ffffff;--clay: #c2603f;--clay-hover: #ad5032;--clay-light: #fbeee8;--clay-border: rgba(194, 96, 63, .3);--emerald: #1e6b52;--emerald-bg: #eaf4ef;--amber: #945d16;--amber-bg: #fcf4e8;--ruby: #9c2828;--ruby-bg: #fbeded;--azure: #1e4f7a;--azure-bg: #edf4fa;--tier-stowaway: #9CA3AF;--tier-rookie: #10B981;--tier-swabbie: #3B82F6;--tier-sailor: #8B5CF6;--tier-navigator: #EF4444;--tier-supernova: #F59E0B;--tier-warlord: #06B6D4;--tier-yonko: #7C3AED;--tier-secret: #EC4899;--font-serif: "Newsreader", Georgia, "Times New Roman", serif;--font-sans: "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "Space Grotesk", "JetBrains Mono", Menlo, Consolas, monospace;--font-handwriting: "Caveat", "Patrick Hand", cursive;--container-max: 1200px;--section-padding: 104px;--shadow-sm: 0 1px 3px rgba(27, 26, 23, .04);--shadow-md: 0 4px 14px rgba(27, 26, 23, .05);--shadow-lift: 0 8px 24px rgba(27, 26, 23, .08);--shadow-pop: 0 16px 36px rgba(27, 26, 23, .11);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 20px;--radius-pill: 9999px;--transition-fast: .15s cubic-bezier(.16, 1, .3, 1);--transition-base: .24s cubic-bezier(.16, 1, .3, 1);--transition-smooth: .38s cubic-bezier(.16, 1, .3, 1)}[data-theme=dark]{--bg: #181815;--bg-subtle: #20201c;--bg-card: #252520;--bg-card-hover: #2d2d26;--bg-card-tint: #2a2a24;--ink: #f2ede4;--ink-secondary: #c9c3b6;--ink-muted: #8e8778;--ink-faint: #5e594e;--line: #33322b;--line-strong: #47453b;--accent: #3d6e5f;--accent-hover: #4e8a78;--accent-light: #202e29;--accent-contrast: #f4efe4;--clay: #d67a5c;--clay-hover: #e08b6f;--clay-light: rgba(214, 122, 92, .16);--clay-border: rgba(214, 122, 92, .35);--emerald: #38a178;--emerald-bg: rgba(56, 161, 120, .12);--amber: #d48b28;--amber-bg: rgba(212, 139, 40, .12);--ruby: #d94e4e;--ruby-bg: rgba(217, 78, 78, .12);--azure: #4889c2;--azure-bg: rgba(72, 137, 194, .12);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .25);--shadow-md: 0 4px 14px rgba(0, 0, 0, .35);--shadow-lift: 0 8px 24px rgba(0, 0, 0, .45);--shadow-pop: 0 16px 36px rgba(0, 0, 0, .55)}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{background-color:var(--bg);color:var(--ink);font-family:var(--font-sans);line-height:1.6;min-height:100vh;display:flex;flex-direction:column;transition:background-color var(--transition-base),color var(--transition-base)}#root{display:flex;flex-direction:column;min-height:100vh}h1,h2,h3,h4,h5,h6{font-family:var(--font-serif);color:var(--ink);line-height:1.2;font-weight:500;letter-spacing:-.015em}p{color:var(--ink-secondary)}a{color:inherit;text-decoration:none;transition:color var(--transition-fast)}button{font-family:inherit;cursor:pointer;border:none;background:none}code,kbd,pre{font-family:var(--font-mono)}.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}.page-container{padding-top:48px;padding-bottom:96px;flex:1}.page-header{margin-bottom:40px}.page-title{font-size:clamp(2rem,3.5vw,3rem);margin-top:8px;margin-bottom:12px}.page-subtitle{font-size:1.125rem;max-width:680px;color:var(--ink-secondary)}.section-padded{padding:80px 0}.bg-subtle-section{background-color:var(--bg-subtle);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.text-center{text-align:center}.w-full{width:100%}.eyebrow{display:inline-block;font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-muted)}.section-header-row{display:flex;align-items:flex-start;gap:24px;margin-bottom:40px}.section-number{font-family:var(--font-serif);font-size:2.2rem;font-weight:400;color:var(--accent);line-height:1;opacity:.8}.section-title{font-size:clamp(1.8rem,2.5vw,2.4rem);margin-top:4px}.section-intro-text{font-size:1.1rem;color:var(--ink-secondary);max-width:640px;margin-bottom:32px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.grid-2-1{display:grid;grid-template-columns:2fr 1fr;gap:32px;align-items:start}.form-row-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media (max-width: 990px){.grid-2-1{grid-template-columns:1fr}}@media (max-width: 860px){.grid-2,.grid-3{grid-template-columns:1fr}}@media (max-width: 600px){.form-row-2{grid-template-columns:1fr}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:500;line-height:1;text-align:center;transition:all var(--transition-fast);white-space:nowrap}.btn-label{display:inline-flex;align-items:center;justify-content:center;gap:6px}.btn-pill{border-radius:var(--radius-pill)}.btn-sm{padding:8px 16px;font-size:.875rem}.btn-md{padding:12px 22px;font-size:.95rem}.btn-lg{padding:15px 28px;font-size:1.05rem}.btn-primary{background-color:var(--accent);color:var(--accent-contrast);box-shadow:var(--shadow-sm)}.btn-primary:hover:not(:disabled){background-color:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--bg-card);color:var(--ink);border:1px solid var(--line-strong)}.btn-secondary:hover:not(:disabled){background-color:var(--bg-card-hover);border-color:var(--ink-muted)}.btn-outline{background-color:transparent;color:var(--ink);border:1px solid var(--line-strong)}.btn-outline:hover:not(:disabled){border-color:var(--ink);background-color:var(--bg-card-hover)}.btn-ghost{background-color:transparent;color:var(--ink-secondary)}.btn-ghost:hover:not(:disabled){color:var(--ink)}.btn-danger{background-color:var(--ruby-bg);color:var(--ruby);border:1px solid var(--ruby)}.btn-danger:hover:not(:disabled){background-color:var(--ruby);color:#fff}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none!important}.btn-arrow{font-size:1.1em;transition:transform var(--transition-fast)}.btn:hover:not(:disabled) .btn-arrow{transform:translate(2px,-2px)}.btn-spinner{width:14px;height:14px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.btn-back{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;font-size:.85rem;font-weight:600;font-family:var(--font-mono);color:var(--ink);background-color:var(--bg-card);border:1px solid var(--line-strong);border-radius:var(--radius-pill);box-shadow:var(--shadow-sm);cursor:pointer;text-decoration:none;white-space:nowrap;transition:all var(--transition-fast)}.btn-back-arrow{display:inline-flex;align-items:center;justify-content:center;transition:transform var(--transition-fast)}.btn-back:hover{background-color:var(--bg-card-hover, #ffffff);border-color:var(--accent);color:var(--accent);box-shadow:var(--shadow-md);transform:translate(-2px)}.btn-back:hover .btn-back-arrow{transform:translate(-3px)}.btn-back:active{transform:scale(.98)}.btn-back-outline{background-color:transparent;border-color:var(--line-strong)}.btn-back-subtle{background-color:var(--bg-subtle);border-color:var(--line)}.btn-back-sm{padding:5px 12px;font-size:.8rem}.btn-back-lg{padding:10px 20px;font-size:.92rem}.breadcrumbs-nav-bar,.breadcrumbs{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:24px;padding:10px 16px;background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.breadcrumb-trail{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;font-family:var(--font-mono);color:var(--ink-muted)}.breadcrumb-trail-link,.breadcrumb-link{display:inline-flex;align-items:center;gap:6px;color:var(--ink-secondary);font-weight:500;text-decoration:none;padding:3px 6px;border-radius:var(--radius-sm);transition:color var(--transition-fast),background-color var(--transition-fast)}.breadcrumb-trail-link:hover,.breadcrumb-link:hover{color:var(--accent);background-color:var(--bg-subtle)}.breadcrumb-trail-sep,.breadcrumb-sep{color:var(--line-strong);-webkit-user-select:none;user-select:none}.breadcrumb-trail-current,.breadcrumb-current{color:var(--ink);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:380px}.pill{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:var(--radius-pill);font-size:.75rem;font-family:var(--font-mono);font-weight:600;letter-spacing:.02em}.pill-subtle{background-color:var(--bg-card-tint);color:var(--ink-secondary);border:1px solid var(--line)}.badge{display:inline-flex;align-items:center;padding:3px 8px;border-radius:var(--radius-sm);font-size:11px;font-family:var(--font-mono);font-weight:600;text-transform:uppercase;letter-spacing:.04em}.badge-success{background-color:var(--emerald-bg);color:var(--emerald);border:1px solid var(--emerald)}.badge-warning{background-color:var(--amber-bg);color:var(--amber);border:1px solid var(--amber)}.badge-danger{background-color:var(--ruby-bg);color:var(--ruby);border:1px solid var(--ruby)}.badge-easy{background-color:var(--emerald-bg);color:var(--emerald);border:1px solid var(--emerald)}.badge-medium{background-color:var(--amber-bg);color:var(--amber);border:1px solid var(--amber)}.badge-hard{background-color:var(--ruby-bg);color:var(--ruby);border:1px solid var(--ruby)}.badge-xp{background-color:var(--accent-light);color:var(--accent);border:1px solid var(--accent);font-weight:700}.badge-read-first{background-color:var(--ruby-bg);color:var(--ruby);border:1px solid var(--ruby);font-size:10px;padding:2px 6px;border-radius:var(--radius-sm);font-weight:700}.tier-badge{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-sans);font-weight:650;border-radius:var(--radius-pill);border-width:1px;border-style:solid;line-height:1.2;white-space:nowrap;vertical-align:middle;transition:all var(--transition-fast)}.tier-badge-sm{padding:3px 9px;font-size:11.5px}.tier-badge-md{padding:4px 12px;font-size:13px}.tier-badge-lg{padding:6px 14px;font-size:14px}.tier-badge-icon{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}.tier-badge-label{font-weight:650;letter-spacing:-.01em}.tier-badge-stowaway{background-color:#f1f5f9;border-color:#cbd5e1;color:#1e293b}.tier-badge-rookie{background-color:#ecfdf5;border-color:#a7f3d0;color:#065f46}.tier-badge-swabbie{background-color:#eff6ff;border-color:#bfdbfe;color:#1e40af}.tier-badge-sailor{background-color:#f5f3ff;border-color:#ddd6fe;color:#5b21b6}.tier-badge-navigator{background-color:#fef2f2;border-color:#fecaca;color:#991b1b}.tier-badge-supernova{background-color:#fffbeb;border-color:#fde68a;color:#92400e}.tier-badge-warlord{background-color:#ecfeff;border-color:#a5f3fc;color:#155e75}.tier-badge-yonko{background-color:#faf5ff;border-color:#e9d5ff;color:#4c1d95}.tier-badge-mythical{background-color:#fdf2f8;border-color:#fbcfe8;color:#9d174d}[data-theme=dark] .tier-badge-stowaway{background-color:#94a3b829;border-color:#94a3b859;color:#f1f5f9}[data-theme=dark] .tier-badge-rookie{background-color:#10b98129;border-color:#10b98159;color:#a7f3d0}[data-theme=dark] .tier-badge-swabbie{background-color:#3b82f629;border-color:#3b82f659;color:#bfdbfe}[data-theme=dark] .tier-badge-sailor{background-color:#8b5cf629;border-color:#8b5cf659;color:#ddd6fe}[data-theme=dark] .tier-badge-navigator{background-color:#ef444429;border-color:#ef444459;color:#fecaca}[data-theme=dark] .tier-badge-supernova{background-color:#f59e0b29;border-color:#f59e0b59;color:#fde68a}[data-theme=dark] .tier-badge-warlord{background-color:#06b6d429;border-color:#06b6d459;color:#a5f3fc}[data-theme=dark] .tier-badge-yonko{background-color:#7c3aed29;border-color:#7c3aed59;color:#e9d5ff}[data-theme=dark] .tier-badge-mythical{background-color:#ec489929;border-color:#ec489959;color:#fbcfe8}.card{background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;display:flex;flex-direction:column;height:100%;transition:all var(--transition-base)}.card-hoverable:hover{background-color:var(--bg-card-hover);border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-md)}.card-tint{background-color:var(--bg-card-tint)}.card-title{font-size:1.35rem;margin-bottom:8px}.card-desc{color:var(--ink-secondary);font-size:.95rem}.card-footer{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:16px;border-top:1px solid var(--line)}.site-header{position:sticky;top:0;z-index:90;background-color:var(--bg);border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:padding var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast)}.header-scrolled{border-bottom-color:var(--line-strong)!important;box-shadow:0 1px 4px #1b1a170d}.header-inner{max-width:1220px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;transition:padding var(--transition-fast)}.header-scrolled .header-inner{padding:10px 24px}.brand-group{display:flex;align-items:center;gap:12px}.brand-logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:600;letter-spacing:-.02em}.brand-icon-wrap{display:flex;align-items:center;color:var(--accent)}.brand-name{font-family:var(--font-serif);font-size:1.35rem;font-weight:600;letter-spacing:-.015em;color:var(--ink)}.desktop-nav{display:none;align-items:center;gap:24px}@media (min-width: 1100px){.desktop-nav{display:flex}}.nav-link{font-size:.925rem;color:var(--ink-secondary);font-weight:500;position:relative;padding:6px 0;white-space:nowrap;transition:color var(--transition-fast)}.nav-link:hover{color:var(--ink)}.nav-link-active{color:var(--ink)!important;font-weight:600}.nav-link-active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background-color:var(--clay);border-radius:2px}.nav-actions{display:flex;align-items:center;gap:10px}.nav-icon-btn{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line);background-color:var(--bg-card);color:var(--ink-secondary);position:relative;transition:all var(--transition-fast)}.nav-icon-btn:hover{border-color:var(--line-strong);color:var(--ink);background-color:var(--bg-card-hover)}.search-trigger-btn{position:relative}.search-kbd-tooltip{position:absolute;bottom:-22px;left:50%;transform:translate(-50%);font-size:9px;font-family:var(--font-mono);color:var(--ink-muted);background-color:var(--bg-card);border:1px solid var(--line);padding:1px 4px;border-radius:3px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity var(--transition-fast)}.search-trigger-btn:hover .search-kbd-tooltip{opacity:1}.user-menu-container{position:relative}.user-menu-trigger{display:flex;align-items:center;gap:8px;padding:4px 10px 4px 6px;border-radius:var(--radius-pill);border:1px solid var(--line);background-color:var(--bg-card);transition:all var(--transition-fast)}.user-menu-trigger:hover{border-color:var(--line-strong)}.user-avatar-badge{width:24px;height:24px;border-radius:50%;background-color:var(--accent);color:var(--accent-contrast);font-size:10px;font-weight:700;display:grid;place-items:center}.user-nav-name{font-size:.85rem;font-weight:600;color:var(--ink)}.user-nav-xp{font-family:var(--font-mono);font-size:11px;color:var(--accent);font-weight:600}.user-dropdown-card{position:absolute;top:calc(100% + 8px);right:0;width:220px;background-color:var(--bg-card);border:1px solid var(--line-strong);border-radius:var(--radius-lg);box-shadow:var(--shadow-pop);padding:8px;z-index:100;animation:modalEnter .15s ease-out}.dropdown-user-header{padding:8px 10px 10px}.dropdown-user-title{font-weight:600;font-size:.95rem;display:block;color:var(--ink)}.dropdown-user-email{font-size:.75rem;color:var(--ink-muted);display:block;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dropdown-tier-wrap{margin-top:4px}.dropdown-divider{height:1px;background-color:var(--line);margin:6px 0}.dropdown-item{display:block;width:100%;text-align:left;padding:8px 10px;border-radius:var(--radius-md);font-size:.875rem;color:var(--ink-secondary);transition:all var(--transition-fast)}.dropdown-item:hover{background-color:var(--bg-subtle);color:var(--ink)}.dropdown-item-signout{color:var(--ruby)}.dropdown-item-signout:hover{background-color:var(--ruby-bg);color:var(--ruby)}.auth-btn-group{display:flex;align-items:center;gap:8px}.btn-login-plain{font-size:.9rem;font-weight:500;color:var(--ink-secondary);padding:6px 12px;transition:color var(--transition-fast)}.btn-login-plain:hover{color:var(--ink)}.btn-start-learning-pill{font-size:.875rem;font-weight:600;color:var(--accent-contrast);background-color:var(--accent);padding:7px 16px;border-radius:var(--radius-pill);transition:all var(--transition-fast)}.btn-start-learning-pill:hover{background-color:var(--accent-hover);transform:translateY(-1px)}.mobile-hamburger-btn{display:grid;place-items:center;width:36px;height:36px;border-radius:var(--radius-md);border:1px solid var(--line);font-size:1.15rem;color:var(--ink);background-color:var(--bg-card)}@media (min-width: 1100px){.mobile-hamburger-btn{display:none}}.mobile-menu-overlay{position:fixed;top:60px;right:0;bottom:0;left:0;background-color:#18181573;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:89}.mobile-menu-inner{background-color:var(--bg);border-bottom:1px solid var(--line-strong);padding:24px;box-shadow:var(--shadow-pop);max-height:calc(100vh - 60px);overflow-y:auto}.mobile-links-list{display:flex;flex-direction:column;gap:6px}.mobile-link-item{font-family:var(--font-serif);font-size:1.25rem;padding:10px 14px;border-radius:var(--radius-md);color:var(--ink);display:block}.mobile-link-active{background-color:var(--bg-subtle);color:var(--clay);font-weight:600}.mobile-menu-divider{height:1px;background-color:var(--line);margin:18px 0}.mobile-user-section{display:flex;flex-direction:column;gap:12px}.mobile-user-summary{display:flex;align-items:center;justify-content:space-between;padding:0 4px}.mobile-user-name{font-weight:600;font-size:1.05rem}.mobile-user-links{display:flex;flex-direction:column;gap:6px}.mobile-btn-logout{text-align:left;font-family:var(--font-serif);font-size:1.15rem;padding:10px 14px;color:var(--ruby);border-radius:var(--radius-md)}.mobile-guest-actions{display:flex;flex-direction:column;gap:10px}.btn-mobile-login{width:100%;padding:12px;border-radius:var(--radius-pill);border:1px solid var(--line-strong);font-weight:600;color:var(--ink);font-size:.95rem}.btn-mobile-start{width:100%;padding:12px;border-radius:var(--radius-pill);background-color:var(--accent);color:var(--accent-contrast);font-weight:600;font-size:.95rem}.headline-highlight{position:relative;display:inline-block;white-space:nowrap}.handdrawn-underline-svg{position:absolute;left:-2px;right:-2px;bottom:-6px;width:calc(100% + 4px);height:14px;pointer-events:none;overflow:visible}.handwritten-annotation{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-handwriting);color:var(--clay);font-size:1.25rem;font-weight:600;line-height:1;-webkit-user-select:none;user-select:none;pointer-events:none}.annotation-script{font-family:var(--font-handwriting);color:var(--clay);font-size:1.3rem;font-weight:600;line-height:1;letter-spacing:-.01em;display:inline-block}.handdrawn-arrow-svg{display:inline-block;color:var(--clay);overflow:visible;flex-shrink:0}.hero-section{padding:80px 0 64px;border-bottom:1px solid var(--line);background-color:var(--bg)}.hero-container{max-width:1200px}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}@media (max-width: 980px){.hero-grid{grid-template-columns:1fr;gap:44px}}.hero-left-col{max-width:620px}.hero-right-col{position:relative;width:100%}.hero-eyebrow-row{display:flex;align-items:center;gap:10px;margin-bottom:20px}.hero-headline{font-size:clamp(2.8rem,5.2vw,4.4rem);line-height:1.08;letter-spacing:-.025em;margin-bottom:22px;color:var(--ink)}.hero-subtitle{font-size:clamp(1.1rem,1.8vw,1.25rem);color:var(--ink-secondary);line-height:1.55;margin-bottom:34px;max-width:580px}.hero-cta-group{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.hero-product-stack{position:relative;width:100%;max-width:480px;margin:0 auto;display:flex;flex-direction:column;gap:16px}.hero-card{background-color:var(--bg-card);border:1px solid 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28px;margin-bottom:28px;box-shadow:var(--shadow-sm)}.tier-progress-eyebrow{font-family:var(--font-mono);font-size:10px;font-weight:700;color:var(--ink-muted);letter-spacing:.08em;display:block;margin-bottom:6px}.tier-progress-row{display:flex;align-items:baseline;gap:14px;margin-bottom:6px;flex-wrap:wrap}.tier-progress-name{font-family:var(--font-serif);font-size:1.5rem;font-weight:600;color:var(--ink)}.tier-progress-xp{font-family:var(--font-mono);font-size:.9rem;color:var(--accent);font-weight:600}.tier-progress-hint{font-size:.9rem;color:var(--ink-secondary);margin-bottom:12px}.tier-progress-bar-wrap{height:8px;border-radius:var(--radius-pill);background-color:var(--line);overflow:hidden}.tier-progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--clay));border-radius:var(--radius-pill)}.tier-grid{display:grid;grid-template-columns:repeat(9,minmax(0,1fr));gap:8px;width:100%;overflow:visible}@media (max-width: 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.tier-current-tag{color:#a7f3d0;background-color:#10b98133;border-color:#10b98173}.tier-step-icon-tile{width:44px;height:44px;border-radius:12px;border-width:1px;border-style:solid;display:grid;place-items:center;margin:6px auto 8px;transition:transform .2s ease}.tier-step-card:hover .tier-step-icon-tile{transform:scale(1.08)}.tier-step-name{font-family:var(--font-serif);font-size:.92rem;font-weight:700;color:var(--ink);margin-bottom:4px;line-height:1.2}.tier-step-xp-wrap{width:100%;display:flex;justify-content:center}.tier-step-xp-pill{font-family:var(--font-mono);font-size:10.5px;font-weight:700;color:var(--ink);background-color:var(--bg-subtle);border:1px solid var(--line-strong);padding:2px 6px;border-radius:var(--radius-pill);line-height:1.2;white-space:nowrap}.tier-step-xp-secret{color:#be185d;background-color:#ec48991f;border-color:#ec489959;font-weight:700}[data-theme=dark] 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var(--line)}.builders-signature-wrap{display:flex;flex-direction:column}.builders-script-sig{font-family:var(--font-handwriting);font-size:1.95rem;font-weight:700;color:var(--clay);line-height:1.1}.builders-roles{font-family:var(--font-mono);font-size:11px;color:var(--ink-muted);text-transform:uppercase;letter-spacing:.05em;margin-top:4px}.builders-github-link{font-size:.95rem;font-weight:600;color:var(--accent)}.builders-github-link:hover{color:var(--clay);text-decoration:underline}.testimonials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}.real-testimonial-card{background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px}.testimonial-quote{font-family:var(--font-serif);font-size:1.1rem;font-style:italic;color:var(--ink);line-height:1.5;margin-bottom:16px}.testimonial-author{display:flex;flex-direction:column}.author-name{font-weight:600;font-size:.9rem;color:var(--ink)}.author-role{font-size:.8rem;color:var(--ink-muted);font-family:var(--font-mono)}.final-cta-section{padding:96px 0;background-color:var(--accent);color:var(--accent-contrast)}.final-cta-eyebrow{font-family:var(--font-mono);font-size:11px;font-weight:700;color:var(--clay);letter-spacing:.1em;text-transform:uppercase;display:block;margin-bottom:12px}.final-cta-headline{color:var(--accent-contrast);font-size:clamp(2.2rem,3.8vw,3.2rem);max-width:640px;margin:8px auto 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#ffffff)}textarea.input,textarea.input-control{min-height:100px;resize:vertical}.input-with-status{position:relative}.username-badge{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:11px;font-family:var(--font-mono);font-weight:600}.status-checking{color:var(--ink-muted)}.status-available{color:var(--emerald)}.status-taken,.status-invalid{color:var(--ruby)}.password-meter-wrap{display:flex;align-items:center;gap:10px;margin-top:6px}.password-meter-bar{flex:1;height:4px;background-color:var(--line);border-radius:2px;overflow:hidden}.password-meter-fill{height:100%;transition:width .3s ease}.password-meter-label{font-size:11px;font-family:var(--font-mono);font-weight:600}.auth-alert{padding:12px 16px;border-radius:var(--radius-md);font-size:.875rem}.auth-alert-error{background-color:var(--ruby-bg);color:var(--ruby);border:1px solid var(--ruby)}.auth-divider{display:flex;align-items:center;margin:6px 0;color:var(--ink-muted);font-size:12px;font-family:var(--font-mono)}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background-color:var(--line)}.auth-divider span{padding:0 12px}.google-auth-btn{display:flex;align-items:center;justify-content:center;gap:10px;padding:12px;border-radius:var(--radius-pill);border:1px solid var(--line-strong);background-color:var(--bg-card);color:var(--ink);font-weight:500;font-size:.95rem}.google-auth-btn:hover{background-color:var(--bg-card-hover);border-color:var(--ink-muted)}.auth-switch-text{text-align:center;font-size:.875rem;color:var(--ink-muted);margin-top:6px}.auth-view-tabs{display:flex;background-color:var(--bg-subtle);border:1px solid var(--line);border-radius:var(--radius-pill);padding:3px;margin-bottom:20px;gap:4px}.auth-view-tab{flex:1;padding:8px 12px;font-size:.875rem;font-weight:500;border-radius:var(--radius-pill);color:var(--ink-muted);background:transparent;border:none;cursor:pointer;transition:all .15s ease;text-align:center}.auth-view-tab:hover{color:var(--ink)}.auth-view-tab.active{background-color:var(--bg-card);color:var(--ink);font-weight:600;box-shadow:0 1px 3px #00000014}.auth-link-btn{color:var(--accent);font-weight:600;text-decoration:underline;background:transparent;border:none;cursor:pointer;padding:2px 4px}.auth-link-btn:hover{color:var(--accent-hover, var(--clay))}.otp-container{display:flex;gap:12px;justify-content:center;margin:16px 0}.otp-slot{width:48px;height:58px;text-align:center;font-size:1.6rem;font-family:var(--font-mono);font-weight:700;border:2px solid var(--line-strong);border-radius:var(--radius-md);background-color:var(--bg);color:var(--ink)}.otp-slot:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.otp-slot-filled{border-color:var(--ink)}.otp-cooldown-box{text-align:center;font-size:.85rem;color:var(--ink-muted);margin-top:8px}.btn-resend-active{color:var(--accent);font-weight:600;text-decoration:underline}.cmd-overlay{z-index:120}.cmd-dialog{background-color:var(--bg-card);border:1px solid var(--line-strong);border-radius:var(--radius-xl);max-width:580px;width:100%;box-shadow:var(--shadow-pop);overflow:hidden;animation:modalEnter .15s ease-out}.cmd-search-bar{display:flex;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line);gap:12px}.cmd-search-icon{font-size:1.25rem;color:var(--ink-muted)}.cmd-input{flex:1;background:none;border:none;font-size:1.05rem;color:var(--ink);outline:none}.cmd-esc-kbd{font-size:11px;padding:2px 6px;border-radius:4px;background-color:var(--bg-subtle);border:1px solid var(--line);color:var(--ink-muted)}.cmd-list{max-height:340px;overflow-y:auto;padding:8px}.cmd-item{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-radius:var(--radius-md);cursor:pointer;transition:background-color var(--transition-fast)}.cmd-item-selected{background-color:var(--bg-subtle)}.cmd-item-left{display:flex;align-items:center;gap:12px}.cmd-category-tag{font-size:10px;font-family:var(--font-mono);font-weight:700;color:var(--ink-muted);text-transform:uppercase}.cmd-item-title{font-size:.95rem;font-weight:500}.cmd-shortcut-key{font-size:11px;padding:2px 6px;border-radius:4px;background-color:var(--bg);border:1px solid var(--line)}.cmd-footer{padding:10px 20px;border-top:1px solid var(--line);display:flex;gap:18px;font-size:11px;color:var(--ink-muted);background-color:var(--bg-subtle)}.cmd-empty{padding:32px;text-align:center;color:var(--ink-muted)}.tabs-container{display:flex;gap:8px;border-bottom:1px solid var(--line);margin-bottom:28px;overflow-x:auto}.tab-btn{display:flex;align-items:center;gap:8px;padding:12px 18px;font-size:.95rem;font-weight:500;color:var(--ink-muted);border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}.tab-btn:hover{color:var(--ink)}.tab-btn-active{color:var(--accent);font-weight:600;border-bottom-color:var(--accent)}.tab-badge{font-size:11px;padding:2px 6px;border-radius:var(--radius-pill);background-color:var(--bg-card-tint);color:var(--ink-secondary)}.accordion{border-top:1px solid var(--line)}.accordion-item{border-bottom:1px solid var(--line)}.accordion-trigger{width:100%;display:flex;align-items:center;justify-content:space-between;padding:20px 0;text-align:left}.accordion-title{font-family:var(--font-serif);font-size:1.25rem;color:var(--ink)}.accordion-chevron{font-size:1.4rem;font-weight:300;color:var(--ink-muted)}.accordion-content{padding-bottom:20px;color:var(--ink-secondary);font-size:1rem;line-height:1.6}.vertical-timeline{display:flex;flex-direction:column;margin-top:36px}.timeline-step-row{display:flex;gap:28px;position:relative}.timeline-node-marker{display:flex;flex-direction:column;align-items:center;flex-shrink:0}.marker-icon{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-family:var(--font-mono);font-weight:700;z-index:2}.marker-open{background-color:var(--bg-card);border:2px solid var(--accent);color:var(--accent)}.marker-done{background-color:var(--emerald);color:#fff}.marker-lock{background-color:var(--bg-subtle);border:1px solid var(--line-strong);color:var(--ink-muted)}.timeline-connecting-line{width:2px;flex:1;background-color:var(--line-strong);margin:6px 0}.timeline-node-card{flex:1;margin-bottom:28px}.timeline-node-top{display:flex;align-items:center;gap:10px;margin-bottom:8px}.node-position-tag{font-family:var(--font-mono);font-size:11px;font-weight:700;color:var(--accent)}.node-hours-badge{font-family:var(--font-mono);font-size:11px;color:var(--ink-muted);background-color:var(--bg-subtle);padding:2px 6px;border-radius:4px}.timeline-node-action-row{margin-top:18px}.solver-header{margin-bottom:28px}.solver-meta-row{display:flex;align-items:center;gap:12px;margin-bottom:12px}.solver-kbd-hint{font-size:11px;font-family:var(--font-mono);color:var(--ink-muted);margin-left:auto}.solver-statement-box{background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px;margin-bottom:28px}.statement-label{font-family:var(--font-mono);font-size:11px;font-weight:700;color:var(--ink-muted);display:block;margin-bottom:12px}.statement-text{font-size:1.15rem;line-height:1.6;color:var(--ink)}.solver-options-list{display:flex;flex-direction:column;gap:14px;margin-bottom:28px}.solver-option-card{display:flex;align-items:center;gap:18px;padding:18px 24px;border-radius:var(--radius-lg);background-color:var(--bg-card);border:2px solid var(--line);cursor:pointer;transition:all var(--transition-fast)}.solver-option-card:hover{border-color:var(--line-strong);background-color:var(--bg-card-hover)}.option-selected{border-color:var(--accent)!important;background-color:var(--bg-card-hover)!important;box-shadow:0 0 0 2px var(--accent-light)}.option-indicator{display:flex;align-items:center;gap:8px}.option-letter{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background-color:var(--bg-subtle);border:1px solid var(--line);font-family:var(--font-mono);font-weight:700;font-size:13px}.option-selected .option-letter{background-color:var(--accent);color:var(--accent-contrast);border-color:var(--accent)}.option-key-badge{font-size:11px;color:var(--ink-muted);font-family:var(--font-mono)}.option-text{font-size:1rem;line-height:1.5;color:var(--ink)}.solver-submit-row{display:flex;gap:16px;align-items:center;margin-bottom:28px}.solver-result-banner{display:flex;align-items:flex-start;gap:20px;padding:24px 28px;border-radius:var(--radius-lg);margin-top:24px;animation:modalEnter .2s ease-out}.banner-correct{background-color:var(--emerald-bg);border:1px solid var(--emerald);color:var(--emerald)}.banner-incorrect{background-color:var(--ruby-bg);border:1px solid var(--ruby);color:var(--ruby)}.banner-icon-wrap{font-size:1.8rem;font-weight:700}.banner-heading{font-size:1.3rem;margin-bottom:4px}.banner-message{font-size:.95rem;color:var(--ink)}.floating-tutor-btn{position:fixed;bottom:28px;right:28px;z-index:80;display:flex;align-items:center;gap:8px;padding:12px 20px;border-radius:var(--radius-pill);background-color:var(--accent);color:var(--accent-contrast);box-shadow:var(--shadow-lg);font-weight:600;font-size:.95rem;transition:transform var(--transition-fast)}.floating-tutor-btn:hover{transform:translateY(-2px)}.floating-tutor-icon{font-family:var(--font-serif);font-size:1.25rem}.tutor-drawer-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background-color:#1b1a1766;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:110;display:flex;justify-content:flex-end}.tutor-drawer-panel{width:100%;max-width:480px;height:100%;background-color:var(--bg-card);border-left:1px solid 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6px;border-radius:4px;font-weight:600}.tutor-title{font-size:1.15rem}.tutor-messages{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:20px}.tutor-msg-row{display:flex;gap:12px}.tutor-msg-user{flex-direction:row-reverse}.tutor-avatar{width:28px;height:28px;border-radius:50%;background-color:var(--accent);color:var(--accent-contrast);font-size:12px;font-weight:700;display:grid;place-items:center;flex-shrink:0}.tutor-msg-user .tutor-avatar{background-color:var(--line-strong);color:var(--ink)}.tutor-msg-bubble{max-width:82%;padding:14px 18px;border-radius:var(--radius-lg);font-size:.95rem;line-height:1.5}.tutor-msg-assistant .tutor-msg-bubble{background-color:var(--bg);border:1px solid var(--line);color:var(--ink)}.tutor-msg-user .tutor-msg-bubble{background-color:var(--accent);color:var(--accent-contrast)}.code-block-container{background-color:var(--bg-subtle);border-radius:var(--radius-md);margin:10px 0;overflow:hidden;border:1px solid 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var(--line-strong);background-color:var(--bg-card);color:var(--ink);font-family:inherit;font-size:.9rem;resize:none}.tutor-bottom-bar{display:flex;align-items:center;justify-content:space-between;margin-top:8px}.tutor-disclaimer{font-size:10px;color:var(--ink-muted)}.tutor-page-wrapper{display:flex;flex-direction:column;gap:16px}.tutor-page-layout{display:flex;gap:24px;min-height:calc(100vh - 210px);position:relative;align-items:stretch}.tutor-sidebar{width:300px;flex-shrink:0;background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-xl);padding:20px;display:flex;flex-direction:column;gap:16px;box-shadow:0 4px 20px -4px #0000000d;transition:all .3s ease}.sidebar-header{display:flex;flex-direction:column;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--line)}.sidebar-conv-list{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:6px;padding-right:4px;min-height:220px}.sidebar-section-label{font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-muted);margin-bottom:6px;display:block}.sidebar-empty-text{font-size:13px;color:var(--ink-muted);font-style:italic;padding:20px 12px;text-align:center;border:1px dashed var(--line);border-radius:var(--radius-md);background-color:var(--bg-subtle)}.conv-item-btn{display:flex;align-items:center;gap:10px;width:100%;padding:10px 14px;border-radius:var(--radius-md);border:1px solid transparent;background:transparent;color:var(--ink-secondary);font-size:13px;font-weight:500;text-align:left;cursor:pointer;transition:all .2s ease}.conv-item-btn:hover{background-color:var(--bg-subtle);color:var(--ink);border-color:var(--line);transform:translate(2px)}.conv-item-btn.conv-item-active{background-color:var(--accent-light);color:var(--accent);border-color:var(--accent);font-weight:600;box-shadow:0 2px 8px -2px #10b98126}.conv-item-icon{display:inline-flex;align-items:center;justify-content:center;width:16px;height:16px;opacity:.7;flex-shrink:0}.conv-title-truncate{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-footer{padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:center}.groq-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--radius-pill);background-color:var(--bg-subtle);border:1px solid var(--line);font-size:11px;font-weight:600;color:var(--ink-secondary);font-family:var(--font-mono)}.groq-status-dot{width:7px;height:7px;border-radius:50%;background-color:#10b981;box-shadow:0 0 8px #10b981;animation:pulseDot 2s infinite ease-in-out}@keyframes pulseDot{0%,to{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.8)}}.tutor-chat-main{flex:1;min-width:0;display:flex;flex-direction:column;background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-xl);box-shadow:0 4px 20px -4px #0000000d;overflow:hidden}.chat-stream-header{padding:18px 24px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:16px;background-color:var(--bg-subtle)}.chat-stream-title-group{display:flex;flex-direction:column;gap:4px}.chat-header-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.tutor-scope-pill{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:var(--radius-pill);background:#3b82f614;border:1px solid rgba(59,130,246,.25);color:#2563eb;font-size:11px;font-weight:600;letter-spacing:.02em}[data-theme=dark] .tutor-scope-pill{background:#60a5fa1f;border-color:#60a5fa4d;color:#93c5fd}.tutor-scope-dot{width:6px;height:6px;border-radius:50%;background-color:currentColor}.btn-tutor-history-toggle{display:none;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--radius-pill);font-size:12px;font-weight:600;border:1px solid var(--line-strong);background:var(--bg);color:var(--ink);cursor:pointer;transition:all .2s}.btn-tutor-history-toggle:hover{background:var(--bg-subtle);border-color:var(--ink)}.chat-stream-scroll{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:20px;background-color:var(--bg-card);min-height:340px;max-height:calc(100vh - 380px)}.tutor-msg-row{display:flex;gap:14px;max-width:88%;animation:fadeIn .25s ease-out}.tutor-msg-assistant{align-self:flex-start}.tutor-msg-user{align-self:flex-end;flex-direction:row-reverse}.tutor-avatar{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;flex-shrink:0;font-weight:700;font-size:15px;box-shadow:0 2px 6px #00000014}.tutor-msg-assistant .tutor-avatar{background:linear-gradient(135deg,#3b82f6,#8b5cf6);color:#fff}.tutor-msg-user .tutor-avatar{background-color:var(--ink);color:var(--bg);font-size:13px}.tutor-msg-bubble{padding:16px 20px;border-radius:16px;font-size:.95rem;line-height:1.6;word-break:break-word}.tutor-msg-assistant .tutor-msg-bubble{background-color:var(--bg);border:1px solid var(--line);color:var(--ink);box-shadow:0 1px 3px #0000000a}.tutor-msg-user .tutor-msg-bubble{background:linear-gradient(135deg,var(--accent) 0%,#059669 100%);color:#fff;border-radius:16px 16px 4px;box-shadow:0 2px 10px -2px #10b9814d}.msg-text-paragraph{margin:0;line-height:1.65;white-space:pre-wrap}.msg-text-paragraph+.msg-text-paragraph{margin-top:12px}.code-block-container{background-color:#0d1117;color:#e6edf3;border:1px solid #30363d;border-radius:var(--radius-md);margin:12px 0;overflow:hidden;box-shadow:0 4px 14px #00000040}.code-header{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;background-color:#161b22;border-bottom:1px solid #30363d;font-family:var(--font-mono);font-size:11px;font-weight:600;color:#8b949e}.btn-copy-code{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:4px;background-color:#ffffff14;border:1px solid rgba(255,255,255,.15);color:#c9d1d9;font-size:11px;font-family:inherit;font-weight:500;cursor:pointer;transition:all .2s}.btn-copy-code:hover{background-color:#ffffff29;color:#fff;border-color:#ffffff4d}.code-snippet{padding:14px 16px;margin:0;overflow-x:auto;font-family:var(--font-mono);font-size:.86rem;line-height:1.55;color:#e6edf3}.chat-prompts-bar{padding:12px 24px;display:flex;align-items:center;gap:8px;overflow-x:auto;border-top:1px solid var(--line);background-color:var(--bg-subtle);scrollbar-width:thin}.chat-prompts-label{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:700;font-family:var(--font-mono);text-transform:uppercase;color:var(--ink-muted);white-space:nowrap;margin-right:4px;flex-shrink:0}.chat-sug-chip{display:inline-flex;align-items:center;gap:6px;padding:7px 13px;border-radius:var(--radius-pill);font-size:12px;font-weight:500;background-color:var(--bg-card);border:1px solid var(--line);color:var(--ink-secondary);white-space:nowrap;cursor:pointer;transition:all .2s ease;flex-shrink:0}.chat-sug-chip:hover:not(:disabled){background-color:var(--bg);border-color:var(--accent);color:var(--accent);transform:translateY(-1px);box-shadow:0 2px 8px -2px #10b98133}.chat-sug-chip:disabled{opacity:.45;cursor:not-allowed}.chat-composer-box{padding:16px 24px 20px;border-top:1px solid var(--line);background-color:var(--bg-card);display:flex;flex-direction:column;gap:10px}.composer-textarea{width:100%;min-height:56px;max-height:160px;padding:12px 16px;border-radius:var(--radius-lg);border:1.5px solid var(--line-strong);background-color:var(--bg);color:var(--ink);font-family:inherit;font-size:.95rem;line-height:1.5;resize:vertical;transition:border-color .2s,box-shadow .2s}.composer-textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.composer-actions-bar{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}.composer-disclaimer{font-size:11px;color:var(--ink-muted);display:inline-flex;align-items:center;gap:6px}.composer-actions-right{display:flex;align-items:center;gap:10px}.composer-key-hint{font-size:11px;font-family:var(--font-mono);color:var(--ink-muted)}@media (max-width: 900px){.tutor-page-layout{flex-direction:column;gap:16px}.tutor-sidebar{width:100%;display:none}.tutor-sidebar.tutor-sidebar-mobile-open{display:flex}.btn-tutor-history-toggle{display:inline-flex}.tutor-msg-row{max-width:100%}.chat-stream-scroll{max-height:55vh}}.table-responsive-container{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-lg);background-color:var(--bg-card)}.leaderboard-table{width:100%;border-collapse:collapse;text-align:left}.leaderboard-table th{padding:14px 20px;background-color:var(--bg-subtle);border-bottom:1px solid var(--line-strong);font-family:var(--font-mono);font-size:11.5px;font-weight:750;text-transform:uppercase;letter-spacing:.05em;color:var(--ink)}.leaderboard-table td{padding:16px 20px;border-bottom:1px solid var(--line);font-size:.95rem;color:var(--ink)}.row-current-user{background-color:#10b98114}[data-theme=dark] .row-current-user{background-color:#10b98124}.student-info-group{display:flex;align-items:center;gap:12px}.student-avatar-initials{width:34px;height:34px;border-radius:50%;background-color:var(--bg-subtle);border:1px solid var(--line-strong);display:grid;place-items:center;font-size:11.5px;font-weight:700;color:var(--ink);flex-shrink:0}.student-details-wrap{display:flex;flex-direction:column;gap:2px;min-width:0}.student-name-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.student-name-text{font-weight:650;font-size:.95rem;color:var(--ink)}.student-you-tag{font-family:var(--font-mono);font-size:10.5px;font-weight:700;color:#065f46;background-color:#ecfdf5;border:1px solid #A7F3D0;padding:1.5px 7px;border-radius:var(--radius-pill);line-height:1.2;white-space:nowrap}[data-theme=dark] .student-you-tag{color:#a7f3d0;background-color:#10b98129;border-color:#10b98159}.student-fullname{font-size:12px;color:var(--ink-secondary);line-height:1.3}.toast-container{position:fixed;bottom:24px;left:24px;z-index:150;display:flex;flex-direction:column;gap:10px;max-width:380px;width:100%}.toast{display:flex;align-items:flex-start;justify-content:space-between;padding:14px 18px;border-radius:var(--radius-lg);background-color:var(--bg-card);border:1px solid var(--line-strong);box-shadow:var(--shadow-pop);animation:toastIn .25s cubic-bezier(.16,1,.3,1)}@keyframes toastIn{0%{opacity:0;transform:translateY(12px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.toast-success{border-left:4px solid var(--emerald)}.toast-error{border-left:4px solid var(--ruby)}.toast-info{border-left:4px solid var(--accent)}.toast-xp{border-left:4px solid var(--amber);background-color:var(--amber-bg)}.toast-title{font-weight:600;font-size:.95rem;margin-bottom:2px}.toast-desc{font-size:.85rem;color:var(--ink-secondary)}.toast-close{font-size:1.25rem;color:var(--ink-muted);line-height:1}.site-footer{border-top:1px solid var(--line);background-color:var(--bg-card);padding:64px 0 36px;margin-top:auto}.footer-inner{max-width:1180px;margin:0 auto;padding:0 24px}.footer-top{display:flex;justify-content:space-between;gap:48px;flex-wrap:wrap;margin-bottom:48px}.footer-brand{max-width:360px}.footer-brand-logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:600;margin-bottom:8px}.footer-tagline{font-size:.95rem;color:var(--ink-secondary);margin-top:8px;line-height:1.55}.footer-status-row{display:flex;align-items:center;gap:8px;margin-top:16px;font-size:.825rem;font-family:var(--font-mono)}.status-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.status-dot-green{background-color:var(--emerald);box-shadow:0 0 0 3px #1e5a3c33}.status-dot-amber{background-color:var(--amber);box-shadow:0 0 0 3px #b4730033}.status-text{color:var(--ink-muted)}.footer-nav-grid{display:flex;gap:48px;flex-wrap:wrap}.footer-col{display:flex;flex-direction:column;gap:10px;font-size:.9rem}.footer-col-title{font-family:var(--font-mono);font-size:11px;font-weight:700;color:var(--ink-muted);text-transform:uppercase;margin-bottom:6px}.footer-link-btn{font-size:.9rem;color:var(--accent);text-align:left;padding:0;cursor:pointer;transition:color var(--transition-fast)}.footer-link-btn:hover{color:var(--clay)}.footer-bottom{border-top:1px solid var(--line);padding-top:24px;display:flex;justify-content:space-between;align-items:center;font-size:.85rem;color:var(--ink-muted);flex-wrap:wrap;gap:12px}.footer-signoff{color:var(--ink-muted)}.back-to-top-btn{font-family:var(--font-mono);font-size:.8rem;color:var(--ink-muted);padding:4px 10px;border-radius:var(--radius-md);border:1px solid var(--line);background:transparent;cursor:pointer;transition:all var(--transition-fast)}.back-to-top-btn:hover{color:var(--ink);border-color:var(--line-strong);background-color:var(--bg-card-hover)}.library-tabs{margin-bottom:24px}.mobile-filter-trigger-row{display:flex;margin-bottom:16px}@media (min-width: 861px){.mobile-filter-trigger-row{display:none}}.btn-toggle-filters{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:var(--radius-pill);border:1px solid var(--line-strong);background-color:var(--bg-card);font-size:.85rem;font-weight:500;color:var(--ink);cursor:pointer}.active-filter-dot{width:7px;height:7px;border-radius:50%;background-color:var(--clay)}.library-layout-grid{display:grid;grid-template-columns:240px 1fr;gap:32px;align-items:start;margin-top:24px}@media (max-width: 860px){.library-layout-grid{grid-template-columns:1fr}}.library-sidebar{position:sticky;top:84px}@media (max-width: 860px){.library-sidebar{display:none;position:static}.sidebar-mobile-open{display:block!important;margin-bottom:24px}}.sidebar-inner-card{background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow-sm)}.sidebar-header-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid var(--line)}.sidebar-title{font-family:var(--font-mono);font-size:11px;font-weight:700;color:var(--ink-muted);text-transform:uppercase;letter-spacing:.08em}.sidebar-reset-btn{font-family:var(--font-mono);font-size:11px;color:var(--clay);font-weight:600;cursor:pointer}.sidebar-filter-group{margin-bottom:16px}.sidebar-label{display:block;font-size:.8rem;font-weight:600;color:var(--ink);margin-bottom:6px}.sidebar-search-box{position:relative}.sidebar-search-input,.filter-select{width:100%;font-size:.875rem}.sidebar-checkbox-label{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--ink);cursor:pointer}.sidebar-note-card{margin-top:20px;padding:12px 14px;background-color:var(--bg-subtle);border-radius:var(--radius-md);font-size:.78rem;line-height:1.45;color:var(--ink-secondary);border-left:2px solid var(--clay)}.library-cards-stack{display:flex;flex-direction:column;gap:20px}.library-item-card{padding:24px 28px;display:flex;flex-direction:column}.item-card-header{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;margin-bottom:10px}.item-title-link{font-family:var(--font-serif);font-size:1.25rem;font-weight:600;color:var(--ink);line-height:1.3}.item-title-link:hover{color:var(--clay)}.btn-save-star{min-height:32px;padding:4px 12px;border-radius:var(--radius-pill);display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background-color:var(--bg-card);font-size:12px;font-weight:500;flex-shrink:0;color:var(--ink-muted);cursor:pointer;white-space:nowrap;transition:all var(--transition-fast)}.btn-save-star:hover{border-color:var(--line-strong);color:var(--ink)}.btn-saved-active{color:var(--amber)!important;background-color:var(--amber-bg)!important;border-color:var(--amber)!important;font-weight:600!important}.item-why-block{background-color:var(--bg-subtle);border-radius:var(--radius-md);padding:12px 14px;margin:12px 0 16px;border-left:3px solid var(--clay);font-size:.85rem}.why-label{display:block;font-family:var(--font-mono);font-size:10px;font-weight:700;text-transform:uppercase;color:var(--clay);margin-bottom:2px}.why-text{color:var(--ink);line-height:1.45}.item-meta-badges{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:12px}.item-desc-text{font-size:.925rem;color:var(--ink-secondary);line-height:1.5;margin-bottom:16px;flex:1}.item-tags-row{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}.item-tag{font-family:var(--font-mono);font-size:11px;padding:2px 8px;border-radius:4px;background-color:var(--bg-subtle);color:var(--ink-muted)}.item-actions-row{display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px solid var(--line);margin-top:auto;font-size:.85rem}.item-ext-link{font-weight:600;color:var(--accent);display:inline-flex;align-items:center;gap:4px}.item-ext-link:hover{color:var(--clay)}.pagination-bar{display:flex;align-items:center;justify-content:center;gap:16px;padding:12px 20px;background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-pill);box-shadow:0 4px 18px -4px #0000000d;width:fit-content;margin:42px auto 28px;transition:all .25s ease}.pagination-bar:hover{border-color:var(--line-strong);box-shadow:0 6px 24px -4px #00000014}.btn-pagination{padding:8px 18px!important;font-size:.875rem!important;font-weight:500!important;border-color:var(--line-strong)!important;background-color:var(--bg)!important;color:var(--ink)!important;transition:all .2s ease!important}.btn-pagination:hover:not(:disabled){background-color:var(--bg-card-hover)!important;border-color:var(--accent)!important;color:var(--accent)!important;transform:translateY(-1px)}.btn-pagination:disabled{opacity:.45!important;cursor:not-allowed!important;background-color:var(--bg-subtle)!important;border-color:var(--line)!important}.page-indicator{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--radius-pill);background-color:var(--bg-subtle);border:1px solid var(--line);font-size:13px;font-weight:500;color:var(--ink-secondary);-webkit-user-select:none;user-select:none}.page-indicator-label{color:var(--ink-muted);font-size:12px}.page-indicator-numbers{font-family:var(--font-mono);font-weight:700;color:var(--ink)}@media (max-width: 640px){.pagination-bar{width:100%;justify-content:space-between;border-radius:var(--radius-lg);gap:8px;padding:10px 14px;margin-top:32px}.page-indicator-label{display:none}}.leaderboard-podium-wrap{margin:36px 0 44px}.podium-grid{display:flex;align-items:flex-end;justify-content:center;gap:14px;max-width:600px;margin:0 auto;min-height:220px}.podium-pillar{flex:1;display:flex;flex-direction:column;align-items:center;text-align:center}.podium-crown{font-size:1.6rem;line-height:1;margin-bottom:4px}.podium-badge-wrap{display:flex;flex-direction:column;align-items:center;gap:6px;margin-bottom:8px}.podium-rank-tag{font-family:var(--font-mono);font-size:11px;font-weight:700;padding:2.5px 9px;border-radius:var(--radius-pill);background-color:var(--bg-card);border:1px solid var(--line-strong);color:var(--ink)}.tag-first{background-color:var(--amber-bg);border-color:var(--amber);color:var(--amber)}.podium-user-name{font-weight:700;font-size:1rem;color:var(--ink);margin-bottom:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:140px}.name-first{font-size:1.15rem;font-weight:750}.podium-user-xp{font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--ink);margin-bottom:12px}.podium-pedestal{width:100%;border-radius:var(--radius-md) var(--radius-md) 0 0;display:grid;place-items:center;border:1px solid var(--line-strong);border-bottom:none}.pedestal-1{height:110px;background:linear-gradient(180deg,rgba(180,115,0,.16),var(--bg-card));border-color:var(--amber)}.pedestal-2{height:80px;background:linear-gradient(180deg,rgba(120,120,130,.16),var(--bg-card))}.pedestal-3{height:55px;background:linear-gradient(180deg,rgba(194,96,63,.16),var(--bg-card))}.podium-pedestal-num{font-family:var(--font-serif);font-size:1.8rem;font-weight:750;color:var(--ink);opacity:.65}.user-standing-card{padding:28px;background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);margin-bottom:36px}.standing-card-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center}@media (max-width: 820px){.standing-card-grid{grid-template-columns:1fr;gap:20px}}.standing-identity-block{display:flex;align-items:center;gap:16px}.standing-big-avatar{width:58px;height:58px;border-radius:50%;background-color:var(--accent-light);color:var(--accent);display:grid;place-items:center;font-family:var(--font-serif);font-size:22px;font-weight:700;flex-shrink:0;border:2px solid var(--accent);box-shadow:0 0 0 3px var(--bg-card),0 0 0 5px var(--line)}.standing-user-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:4px;margin-bottom:4px}.standing-username{font-family:var(--font-serif);font-size:1.55rem;font-weight:700;color:var(--ink);margin:0;line-height:1.2}.standing-meta-text{font-family:var(--font-mono);font-size:12px;color:var(--ink-muted);margin:0}.standing-stats-row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.stat-pill-box{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:14px 18px;background-color:var(--bg-subtle);border:1px solid var(--line);border-radius:var(--radius-md);text-align:center;gap:4px;transition:transform var(--transition-fast),border-color var(--transition-fast)}.stat-pill-box:hover{border-color:var(--accent);transform:translateY(-2px)}.stat-pill-num{font-family:var(--font-serif);font-size:1.5rem;font-weight:700;color:var(--ink);line-height:1.1;display:block}.stat-pill-lbl{font-family:var(--font-mono);font-size:10.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-muted);display:block}.standing-next-tier-box{grid-column:1 / -1;display:flex;flex-direction:column;gap:8px;padding-top:18px;border-top:1px solid var(--line);margin-top:4px}.tiers-cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(310px,1fr));gap:20px;margin-top:24px}.tier-card{display:flex;flex-direction:column;gap:12px;padding:22px;border:1px solid var(--line-strong);border-radius:var(--radius-lg);background-color:var(--bg-card);transition:all var(--transition-fast);position:relative;box-shadow:var(--shadow-sm)}.tier-card:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:var(--shadow-md)}.tier-card-current{border-color:#059669!important;box-shadow:0 0 0 2px #10b98140,var(--shadow-sm)}[data-theme=dark] .tier-card-current{border-color:#10b981!important;box-shadow:0 0 0 2px #10b98159,var(--shadow-sm)}.tier-card-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}.tier-threshold-tag{font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--ink);background-color:var(--bg-subtle);padding:4px 10px;border-radius:var(--radius-pill);border:1px solid var(--line-strong)}.tier-desc-text{font-size:14px;line-height:1.55;color:var(--ink);font-weight:450;margin:0}.tier-card-mythical{background:linear-gradient(135deg,rgba(236,72,153,.08),var(--bg-card));border-color:#ec489959;box-shadow:0 4px 18px #ec48991a}.tier-card-mythical:hover{border-color:#ec4899;box-shadow:0 8px 30px #ec489938}.tier-card-mythical .tier-threshold-tag{background-color:#ec489926;border-color:#ec489966;color:#ec4899}.auth-split-layout{display:grid;grid-template-columns:240px 1fr;gap:32px}@media (max-width: 680px){.auth-split-layout{grid-template-columns:1fr}}.auth-side-panel{background-color:var(--bg-subtle);border-radius:var(--radius-lg);padding:28px 20px;display:flex;flex-direction:column;border:1px solid var(--line)}@media (max-width: 680px){.auth-side-panel{display:none}}.auth-side-illustration{margin-bottom:16px}.auth-side-heading{font-family:var(--font-serif);font-size:1.25rem;margin-bottom:10px;color:var(--ink)}.auth-side-copy{font-size:.875rem;color:var(--ink-secondary);line-height:1.5;margin-bottom:20px;flex:1}.auth-side-pill{display:inline-flex;align-items:center;font-family:var(--font-mono);font-size:10px;font-weight:700;color:var(--accent);background-color:var(--accent-light);padding:4px 10px;border-radius:var(--radius-pill);align-self:flex-start}.dashboard-page-wrapper{padding-bottom:64px}.dashboard-top-nav{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:8px 0 16px;margin-bottom:8px}.dashboard-breadcrumb{display:flex;align-items:center;gap:8px;font-size:.875rem;font-family:var(--font-mono);color:var(--ink-muted)}.dash-breadcrumb-link{display:inline-flex;align-items:center;gap:6px;color:var(--ink-secondary);text-decoration:none;font-weight:500;transition:color var(--transition-fast)}.dash-breadcrumb-link:hover{color:var(--accent)}.dash-breadcrumb-sep{color:var(--line-strong)}.dash-breadcrumb-current{color:var(--ink);font-weight:600}.dashboard-top-actions{display:flex;align-items:center;gap:10px}.dash-home-btn{display:inline-flex;align-items:center;gap:6px}.dash-view-profile-btn{display:inline-flex;align-items:center;gap:6px;box-shadow:0 2px 8px #0284c740}.dashboard-welcome-banner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px;padding-bottom:20px;border-bottom:1px solid var(--line)}.dashboard-banner-side{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.dashboard-rank-pill-box{display:inline-flex;align-items:center;gap:12px;padding:8px 16px;background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-pill);box-shadow:var(--shadow-sm)}.dash-quick-profile-link{font-size:12px}.user-xp-counter{font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--accent)}.dashboard-main-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:32px;align-items:start}@media (max-width: 1024px){.dashboard-main-layout{grid-template-columns:1fr}}.dashboard-content-col{display:flex;flex-direction:column;gap:36px;min-width:0}.dashboard-side-col{display:flex;flex-direction:column;gap:24px}@media (min-width: 1025px){.dashboard-side-col{position:sticky;top:96px}}.continue-learning-card{background:linear-gradient(135deg,var(--bg-card) 0%,var(--bg-subtle) 100%);border:1px solid var(--line-strong);border-left:5px solid var(--accent)}.continue-card-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}.continue-card-sub{font-size:.95rem;color:var(--ink-secondary);margin-top:6px;max-width:620px;line-height:1.5}.dashboard-metrics-row{margin-top:0}.metric-widget-card{display:flex;flex-direction:column;gap:10px;padding:22px 24px}.metric-title{font-family:var(--font-mono);font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-muted);font-weight:700}.metric-content-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:4px 0}.metric-big-num{font-family:var(--font-serif);font-size:2.2rem;font-weight:600;color:var(--ink);line-height:1}.metric-percentile-tag{display:inline-flex;align-items:center;padding:4px 10px;border-radius:var(--radius-pill);background-color:var(--accent-light);color:var(--accent);font-family:var(--font-mono);font-size:11px;font-weight:700;border:1px solid var(--accent)}.metric-link-btn{font-size:13px;font-weight:600;color:var(--accent);text-decoration:none;display:inline-flex;align-items:center;gap:4px;transition:color var(--transition-fast)}.metric-link-btn:hover{color:var(--clay)}.metric-subtext{font-size:12px;color:var(--ink-muted);font-family:var(--font-mono)}.dashboard-section{display:flex;flex-direction:column;gap:20px}.dashboard-tracks-grid,.dashboard-problems-grid{align-items:stretch}.dash-track-card{display:flex;flex-direction:column;justify-content:space-between;height:100%;min-height:170px}.dash-track-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:16px}.track-num-label{display:block;font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--clay);margin-bottom:6px}.dash-track-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-secondary)}.dash-prob-card{display:flex;flex-direction:column;justify-content:space-between;height:100%;min-height:170px}.dash-prob-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px}.dash-profile-card{padding:24px;background:linear-gradient(180deg,var(--bg-card) 0%,var(--bg-subtle) 100%);border:1px solid var(--line-strong);border-radius:var(--radius-xl);box-shadow:var(--shadow-card);position:relative;overflow:hidden}.dash-profile-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--accent) 0%,#3b82f6 50%,var(--clay) 100%)}.dash-profile-card-header{display:flex;align-items:center;gap:16px}.dash-profile-avatar-wrap{position:relative;flex-shrink:0}.dash-profile-avatar-img,.dash-profile-avatar-fallback{width:58px;height:58px;border-radius:50%;object-fit:cover;border:2px solid var(--accent)}.dash-profile-avatar-fallback{background:linear-gradient(135deg,var(--accent) 0%,#1e40af 100%);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-weight:700;font-size:1.25rem;letter-spacing:-.5px}.dash-online-dot{position:absolute;bottom:2px;right:2px;width:12px;height:12px;background-color:var(--emerald, #10b981);border:2px solid var(--bg-card);border-radius:50%}.dash-profile-info{display:flex;flex-direction:column;gap:2px;min-width:0}.dash-profile-name-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.dash-profile-name{font-size:1.15rem;font-weight:700;color:var(--ink);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dash-verified-tag{display:inline-flex;align-items:center;font-size:10px;font-family:var(--font-mono);font-weight:700;color:#0284c7;background-color:#0284c71a;border:1px solid rgba(2,132,199,.3);padding:1px 6px;border-radius:var(--radius-pill)}.dash-profile-handle{font-size:.85rem;font-family:var(--font-mono);color:var(--ink-muted)}.dash-profile-email{font-size:.8rem;color:var(--ink-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.dash-profile-bio{font-size:.875rem;line-height:1.5;color:var(--ink-secondary);font-style:italic;margin:14px 0 0}.dash-profile-bio-empty{font-size:.8rem;color:var(--ink-muted);margin:14px 0 0}.dash-profile-divider{height:1px;background-color:var(--line);margin:18px 0}.dash-profile-rank-box{background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:14px}.dash-tier-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.dash-tier-label{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;font-weight:700;color:var(--ink-muted)}.dash-tier-progress-wrap{display:flex;flex-direction:column;gap:6px}.dash-tier-meta{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--ink-secondary)}.dash-xp-needed-tag{font-family:var(--font-mono);font-size:10px;color:var(--clay);font-weight:600}.dash-progress-track{width:100%;height:6px;background-color:var(--bg-subtle);border-radius:var(--radius-pill);overflow:hidden;border:1px solid var(--line)}.dash-progress-fill{height:100%;border-radius:var(--radius-pill);transition:width .3s ease}.dash-tier-apex-tag{font-size:11px;font-family:var(--font-mono);color:var(--accent);font-weight:600}.dash-profile-mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:16px 0}.dash-mini-stat{display:flex;flex-direction:column;align-items:center;padding:8px 4px;background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-md);text-align:center}.dash-mini-stat-num{font-family:var(--font-serif);font-size:1.15rem;font-weight:700;color:var(--ink)}.dash-mini-stat-label{font-size:10px;font-family:var(--font-mono);color:var(--ink-muted);text-transform:uppercase}.dash-profile-card-buttons{display:flex;flex-direction:column;gap:8px;margin-top:4px}.dash-insight-card{padding:20px;background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg)}.dash-insight-header{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px;flex-wrap:wrap}.dash-insight-badge{font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.08em;color:var(--clay)}.dash-insight-topic{font-size:11px;font-family:var(--font-mono);color:var(--ink-muted)}.dash-insight-quote{margin:0 0 10px;font-size:.85rem;line-height:1.5;color:var(--ink);font-style:italic}.dash-insight-author{display:block;font-size:11px;font-family:var(--font-mono);color:var(--ink-muted);text-align:right}.dash-quick-card{padding:20px}.dash-quick-title{display:block;font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.08em;color:var(--ink-muted);margin-bottom:12px}.dash-quick-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.dash-quick-item{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:var(--radius-md);color:var(--ink);text-decoration:none;font-size:.875rem;font-weight:500;background-color:var(--bg-subtle);border:1px solid transparent;transition:all var(--transition-fast)}.dash-quick-item:hover{background-color:var(--bg-card);border-color:var(--line-strong);color:var(--accent);transform:translate(2px)}.dash-quick-icon-wrap,.dash-quick-icon{width:28px;height:28px;border-radius:var(--radius-sm);display:inline-flex;align-items:center;justify-content:center;background-color:var(--bg-card);border:1px solid var(--line);color:var(--ink-secondary);flex-shrink:0;transition:all var(--transition-fast)}.dash-quick-item:hover .dash-quick-icon-wrap,.dash-quick-item:hover .dash-quick-icon{color:var(--accent);border-color:var(--accent);background-color:var(--accent-light)}.dash-quick-arrow{margin-left:auto;color:var(--ink-muted);font-size:12px}.dashboard-hubs-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}@media (max-width: 768px){.dashboard-hubs-grid{grid-template-columns:1fr}}.dash-hub-card{display:flex;flex-direction:column;padding:22px;background-color:var(--bg-card);border:1px solid var(--line-strong);border-radius:var(--radius-lg);text-decoration:none;color:var(--ink);box-shadow:var(--shadow-sm);transition:all var(--transition-fast)}.dash-hub-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:var(--shadow-md)}.dash-hub-icon-wrap,.dash-hub-icon{width:48px;height:48px;border-radius:var(--radius-lg);display:inline-flex;align-items:center;justify-content:center;margin-bottom:14px;transition:all var(--transition-fast)}.dash-hub-icon-tutor{background:linear-gradient(135deg,#3b82f61f,#8b5cf61f);color:#2563eb;border:1px solid rgba(59,130,246,.25)}.dash-hub-icon-library{background:linear-gradient(135deg,#10b9811f,#0596691f);color:#059669;border:1px solid rgba(16,185,129,.25)}.dash-hub-icon-leaderboard{background:linear-gradient(135deg,#f59e0b1f,#d977061f);color:#d97706;border:1px solid rgba(245,158,11,.25)}[data-theme=dark] .dash-hub-icon-tutor{background:linear-gradient(135deg,#60a5fa29,#a78bfa29);color:#93c5fd;border-color:#60a5fa59}[data-theme=dark] .dash-hub-icon-library{background:linear-gradient(135deg,#34d39929,#10b98129);color:#6ee7b7;border-color:#34d39959}[data-theme=dark] .dash-hub-icon-leaderboard{background:linear-gradient(135deg,#fbbf2429,#f59e0b29);color:#fcd34d;border-color:#fbbf2459}.dash-hub-card:hover .dash-hub-icon-wrap,.dash-hub-card:hover .dash-hub-icon{transform:scale(1.08)}.dash-hub-card:hover .dash-hub-icon-tutor{background:linear-gradient(135deg,#3b82f6,#8b5cf6);color:#fff;border-color:transparent;box-shadow:0 6px 16px -2px #3b82f659}.dash-hub-card:hover .dash-hub-icon-library{background:linear-gradient(135deg,#10b981,#059669);color:#fff;border-color:transparent;box-shadow:0 6px 16px -2px #10b98159}.dash-hub-card:hover .dash-hub-icon-leaderboard{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;border-color:transparent;box-shadow:0 6px 16px -2px #f59e0b59}.dash-hub-title{font-size:1.05rem;font-weight:700;color:var(--ink);margin:0 0 6px}.dash-hub-desc{font-size:.85rem;line-height:1.5;color:var(--ink-secondary);margin:0 0 16px;flex:1}.dash-hub-arrow{font-size:12px;font-weight:600;color:var(--accent);display:inline-flex;align-items:center;gap:4px;font-family:var(--font-mono)}.track-cards-grid{align-items:stretch}.track-card{display:flex;flex-direction:column;height:100%;min-height:220px}.track-card-header-row{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:14px}.track-card-desc{font-size:.95rem;color:var(--ink-secondary);line-height:1.55;margin-bottom:20px;flex:1}.track-card-meta-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}.track-progress-stat{font-family:var(--font-mono);font-size:12px;color:var(--ink-muted);font-weight:600}.track-status-badge{font-family:var(--font-mono);font-size:11px;color:var(--clay);font-weight:600;text-transform:uppercase;letter-spacing:.04em}.filters-bar{display:flex;align-items:center;gap:16px;margin-bottom:28px;flex-wrap:wrap}.filter-label{font-family:var(--font-mono);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-secondary)}.filter-chips-group{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.filter-chip{padding:6px 14px;border-radius:var(--radius-pill);border:1px solid var(--line);background-color:var(--bg-card);color:var(--ink-secondary);font-size:13px;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.filter-chip:hover{border-color:var(--line-strong);color:var(--ink);background-color:var(--bg-card-hover)}.filter-chip-active{background-color:var(--ink)!important;color:var(--bg)!important;border-color:var(--ink)!important;font-weight:600}.problems-grid{align-items:stretch}.problem-card{display:flex;flex-direction:column;height:100%;min-height:180px}.problem-card-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px}.problem-card-title{font-size:1.2rem;font-weight:600;line-height:1.35;margin-bottom:16px;color:var(--ink)}.problem-card-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}.problem-id-tag{font-family:var(--font-mono);font-size:12px;color:var(--ink-muted)}.library-item-card{display:flex;flex-direction:column;height:100%;padding:24px 28px}.item-description-text{font-size:.925rem;color:var(--ink-secondary);line-height:1.55;margin-bottom:16px;flex:1}.item-valuable-note{background-color:var(--bg-subtle);border-radius:var(--radius-md);padding:10px 14px;margin:0 0 16px;border-left:3px solid var(--clay);font-size:.85rem;line-height:1.45;color:var(--ink)}.item-tags-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}.repo-lang-pill{font-family:var(--font-mono);font-size:11px;padding:3px 8px;border-radius:var(--radius-pill);background-color:var(--bg-subtle);color:var(--clay);font-weight:600;border:1px solid var(--line);display:inline-flex;align-items:center}.repo-stars-stat{font-family:var(--font-mono);font-size:11px;color:var(--amber);font-weight:600;display:inline-flex;align-items:center;gap:4px}.paper-meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px;font-size:12px;font-family:var(--font-mono)}.paper-year{color:var(--clay);font-weight:600}.paper-authors{color:var(--ink-secondary)}.paper-authors-meta{font-size:12px;color:var(--ink-muted);margin-bottom:8px;font-family:var(--font-mono)}.paper-title-group{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.btn-pdf-link{font-family:var(--font-mono);font-size:11px;font-weight:700;color:var(--accent);display:inline-flex;align-items:center;gap:4px;text-decoration:none;padding:3px 10px;border-radius:var(--radius-pill);border:1px solid var(--accent);background:var(--accent-light);transition:all var(--transition-fast)}.btn-pdf-link:hover{background:var(--accent);color:var(--accent-contrast)}.saved-items-stack{display:flex;flex-direction:column;gap:36px}.saved-group-section{display:flex;flex-direction:column;gap:16px}.saved-section-heading{font-family:var(--font-serif);font-size:1.4rem;font-weight:600;color:var(--ink);padding-bottom:8px;border-bottom:1px solid var(--line-subtle)}.node-detail-header{margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid var(--line)}.node-header-top-row{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:12px}.node-desc-lead{font-size:1.15rem;color:var(--ink-secondary);max-width:760px;line-height:1.6;margin-bottom:24px}.node-action-bar{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.node-content-layout{margin-top:32px}.node-main-col{display:flex;flex-direction:column;gap:36px;min-width:0}.node-side-col{position:sticky;top:88px;min-width:0}.node-section{display:flex;flex-direction:column;gap:16px}.node-section-title{font-family:var(--font-serif);font-size:1.3rem;font-weight:600;color:var(--ink);padding-bottom:8px;border-bottom:1px solid var(--line)}.node-empty-hint{font-size:.9rem;color:var(--ink-muted);font-style:italic;padding:8px 0}.resource-links-list{display:flex;flex-direction:column;gap:10px}.resource-item-link{display:flex;align-items:center;gap:14px;padding:12px 18px;background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-md);transition:all var(--transition-fast);text-decoration:none}.resource-item-link:hover{border-color:var(--line-strong);background-color:var(--bg-card-hover);transform:translate(3px)}.resource-kind-pill{font-family:var(--font-mono);font-size:10px;font-weight:700;text-transform:uppercase;padding:3px 8px;border-radius:var(--radius-pill);background-color:var(--bg-subtle);color:var(--clay);border:1px solid var(--line);flex-shrink:0}.resource-title-text{flex:1;font-weight:500;font-size:.95rem;color:var(--ink)}.resource-ext-arrow{color:var(--ink-muted);font-size:14px}.practice-links-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.practice-node-card{display:flex;flex-direction:column;justify-content:space-between;gap:12px;height:100%;padding:20px}.practice-node-top{display:flex;align-items:center;justify-content:space-between;gap:8px}.repos-cards-stack{display:flex;flex-direction:column;gap:16px}.repo-node-card{display:flex;flex-direction:column;gap:12px;padding:22px 24px}.repo-card-top-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.repo-name-link{font-family:var(--font-serif);font-size:1.2rem;font-weight:600;color:var(--ink);text-decoration:none}.repo-name-link:hover{color:var(--accent)}.repo-desc-text{font-size:.925rem;color:var(--ink-secondary);line-height:1.5}.why-valuable-box{background-color:var(--bg-subtle);border-radius:var(--radius-md);padding:10px 14px;border-left:3px solid var(--clay);font-size:.85rem;line-height:1.45;color:var(--ink)}.repo-tags-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:auto;padding-top:8px}.side-papers-card{display:flex;flex-direction:column;gap:16px;padding:22px}.side-card-title{font-family:var(--font-serif);font-size:1.2rem;font-weight:600;color:var(--ink);margin-bottom:4px}.side-papers-list{display:flex;flex-direction:column;gap:16px}.side-paper-item{display:flex;flex-direction:column;gap:8px;padding-bottom:16px;border-bottom:1px solid var(--line-subtle)}.side-paper-item:last-child{border-bottom:none;padding-bottom:0}.paper-title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.paper-link-title{font-size:.95rem;font-weight:600;color:var(--ink);line-height:1.35;text-decoration:none}.paper-link-title:hover{color:var(--accent)}.paper-summary-snippet{font-size:.85rem;color:var(--ink-secondary);line-height:1.45;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.paper-actions-row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:4px}.btn-save-sm{font-family:var(--font-mono);font-size:11px;font-weight:600;padding:3px 10px;border-radius:var(--radius-pill);border:1px solid var(--line);background:var(--bg-card);color:var(--ink-muted);cursor:pointer;transition:all var(--transition-fast)}.btn-save-sm:hover{border-color:var(--line-strong);color:var(--ink)}.btn-save-sm.saved-active{background:var(--amber-bg);color:var(--amber);border-color:var(--amber)}.detail-hero-box{padding:32px;background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);margin-bottom:32px;display:flex;flex-direction:column;gap:16px;box-shadow:var(--shadow-sm)}.detail-top-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.detail-title{font-family:var(--font-serif);font-size:clamp(1.8rem,3vw,2.4rem);font-weight:600;line-height:1.25;margin:4px 0;color:var(--ink)}.detail-lead{font-size:1.1rem;color:var(--ink-secondary);line-height:1.6;max-width:760px}.paper-year-badge{font-family:var(--font-mono);font-size:12px;font-weight:700;padding:2px 10px;border-radius:var(--radius-pill);background-color:var(--bg-subtle);color:var(--clay);border:1px solid var(--line)}.paper-authors-banner{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:.95rem;color:var(--ink-secondary)}.venue-tag{font-family:var(--font-mono);font-size:11px;color:var(--ink-muted);background:var(--bg-subtle);padding:2px 8px;border-radius:4px;border:1px solid var(--line)}.detail-cta-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:8px;padding-top:18px;border-top:1px solid var(--line)}.detail-section{margin-top:32px;display:flex;flex-direction:column;gap:14px}.paper-summary-card{padding:24px 28px;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-md)}.summary-full-text{font-size:1rem;line-height:1.7;color:var(--ink);white-space:pre-line}.tags-chips-stack{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.chip-tag{font-family:var(--font-mono);font-size:12px;padding:4px 12px;border-radius:var(--radius-pill);background-color:var(--bg-subtle);color:var(--ink-secondary);border:1px solid var(--line)}.profile-page-wrapper{max-width:980px;margin:0 auto}.profile-top-nav{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:24px;padding:12px 18px;background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.profile-breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;font-family:var(--font-mono);color:var(--ink-muted)}.profile-breadcrumb-link{display:inline-flex;align-items:center;gap:6px;color:var(--ink-secondary);font-weight:500;transition:color var(--transition-fast)}.profile-breadcrumb-link:hover{color:var(--accent)}.profile-breadcrumb-sep{color:var(--line-strong)}.profile-breadcrumb-current{color:var(--ink);font-weight:600}.profile-top-actions{display:flex;align-items:center;gap:8px}.profile-layout-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(360px,1fr));gap:24px;align-items:start}.profile-card{display:flex;flex-direction:column;gap:20px;height:100%;padding:28px;background-color:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.profile-avatar-banner{display:flex;align-items:center;gap:16px;padding-bottom:18px;border-bottom:1px solid var(--line)}.profile-big-avatar{width:64px;height:64px;border-radius:50%;background-color:var(--accent-light);color:var(--accent);display:grid;place-items:center;font-family:var(--font-serif);font-size:24px;font-weight:700;flex-shrink:0;border:2px solid var(--accent);box-shadow:0 0 0 3px var(--bg-card),0 0 0 5px var(--line)}.profile-name-heading{font-family:var(--font-serif);font-size:1.45rem;font-weight:600;line-height:1.2;margin-bottom:4px;color:var(--ink)}.profile-meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.profile-username-tag{font-family:var(--font-mono);font-size:12px;color:var(--ink-muted);background-color:var(--bg-subtle);padding:2px 8px;border-radius:var(--radius-pill);border:1px solid var(--line)}.profile-bio-box{padding:14px 16px;background-color:var(--bg-subtle);border:1px solid var(--line);border-radius:var(--radius-md);margin-top:6px;position:relative}.profile-bio-label{display:block;font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-muted);margin-bottom:6px}.profile-bio-text{font-size:13.5px;line-height:1.55;color:var(--ink-secondary);margin:0}.profile-bio-empty{padding:14px 16px;background-color:var(--bg-subtle);border:1px dashed var(--line-strong);border-radius:var(--radius-md);margin-top:6px;font-size:12.5px;color:var(--ink-muted);line-height:1.5}.profile-edit-box{background-color:var(--bg-subtle);border:1px solid var(--line);border-radius:var(--radius-md);padding:18px;margin-top:4px}.profile-edit-header{margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line)}.profile-edit-title{font-family:var(--font-serif);font-size:1.15rem;font-weight:600;color:var(--ink);margin:0 0 2px}.profile-edit-subtitle{font-size:12px;color:var(--ink-muted);margin:0}.profile-readonly-pills{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}.profile-readonly-pill{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:11px;color:var(--ink-secondary);background-color:var(--bg-card);padding:4px 10px;border-radius:var(--radius-pill);border:1px solid var(--line)}.profile-readonly-pill span.locked-label{color:var(--ink-muted);font-size:10px}.profile-edit-actions{display:flex;align-items:center;gap:10px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}.profile-info-rows{display:flex;flex-direction:column;gap:12px;margin:6px 0}.profile-info-row{display:flex;align-items:center;justify-content:space-between;font-size:13px;padding-bottom:10px;border-bottom:1px solid var(--line)}.profile-info-row:last-child{border-bottom:none}.info-row-label{color:var(--ink-secondary);font-size:12px;font-weight:500}.info-row-value{font-weight:500;color:var(--ink);font-family:var(--font-mono);font-size:13px}.profile-card-footer{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}.rank-summary-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.profile-xp-pill{font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--accent);padding:4px 12px;background-color:var(--accent-light);border-radius:var(--radius-pill);border:1px solid var(--accent)}.profile-stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.profile-stat-box{padding:18px 14px;border-radius:var(--radius-md);background-color:var(--bg-subtle);border:1px solid var(--line);display:flex;flex-direction:column;align-items:center;text-align:center;transition:transform var(--transition-fast),border-color var(--transition-fast)}.profile-stat-box:hover{border-color:var(--accent);transform:translateY(-2px)}.profile-stat-box .stat-num{font-family:var(--font-serif);font-size:1.85rem;font-weight:600;color:var(--ink);line-height:1.1}.profile-stat-box .stat-label{font-size:11px;text-transform:uppercase;font-family:var(--font-mono);color:var(--ink-muted);margin-top:4px;letter-spacing:.05em}.next-tier-section{display:flex;flex-direction:column;gap:10px;padding:16px;background-color:var(--bg-subtle);border-radius:var(--radius-md);border:1px solid var(--line)}.next-tier-header{display:flex;justify-content:space-between;font-size:12.5px;font-weight:650;color:var(--ink);font-family:var(--font-mono)}.xp-needed-hint{font-size:11.5px;color:var(--ink-secondary);font-family:var(--font-mono);font-weight:600}.profile-quick-shortcuts{display:flex;flex-direction:column;gap:8px;margin-top:6px}.profile-shortcut-link{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background-color:var(--bg-subtle);border:1px solid var(--line);border-radius:var(--radius-md);font-size:12.5px;font-weight:500;color:var(--ink-secondary);transition:all var(--transition-fast)}.profile-shortcut-link:hover{background-color:var(--bg-card-hover, #ffffff);border-color:var(--accent);color:var(--accent);transform:translate(3px)}.advisory-form{display:flex;flex-direction:column;gap:18px}.advisory-intro{font-size:.95rem;color:var(--ink-secondary);line-height:1.55;margin-bottom:6px}.advisory-btn-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:10px;padding-top:16px;border-top:1px solid var(--line);flex-wrap:wrap}.advisory-note{font-family:var(--font-mono);font-size:12px;color:var(--ink-muted)}.advisory-success-view{display:flex;flex-direction:column;align-items:center;text-align:center;padding:24px 16px;gap:14px}.success-icon-badge{width:48px;height:48px;border-radius:50%;background-color:var(--emerald-bg);color:var(--emerald);display:grid;place-items:center;font-size:22px;font-weight:700;border:2px solid var(--emerald)}.success-title{font-family:var(--font-serif);font-size:1.5rem;font-weight:600;color:var(--ink)}.success-desc{font-size:.95rem;color:var(--ink-secondary);max-width:460px;line-height:1.55}.success-action-row{display:flex;align-items:center;gap:12px;margin-top:12px}.geeky-loader-container{display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;margin:0 auto;box-sizing:border-box;position:relative;transition:all var(--transition-base, .24s cubic-bezier(.16, 1, .3, 1))}.geeky-loader-fullscreen{min-height:60vh;padding:48px 24px}.geeky-loader-lg{padding:40px 24px}.geeky-loader-md{padding:28px 20px}.geeky-loader-sm{padding:16px 12px}.geeky-loader-card{width:100%;max-width:540px;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg, 16px);padding:24px 28px 22px;box-shadow:var(--shadow-md, 0 4px 14px rgba(27, 26, 23, .05));position:relative;overflow:hidden;text-align:center;display:flex;flex-direction:column;align-items:center;transition:transform var(--transition-base, .24s ease),box-shadow var(--transition-base, .24s ease),border-color var(--transition-base, .24s ease)}.geeky-loader-card:hover{box-shadow:var(--shadow-lift, 0 8px 24px rgba(27, 26, 23, .08))}.geeky-loader-card.card-sm{max-width:380px;padding:14px 18px 12px}.geeky-loader-top-bar{position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent) 0%,var(--clay) 50%,var(--accent) 100%);background-size:200% 100%;animation:loaderGradientShift 3s linear infinite}@keyframes loaderGradientShift{0%{background-position:0% 50%}to{background-position:200% 50%}}.geeky-loader-header{display:flex;align-items:center;justify-content:space-between;width:100%;margin-bottom:12px;gap:12px}.geeky-loader-eyebrow{font-family:var(--font-mono, monospace);font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-muted);display:flex;align-items:center;gap:6px}.geeky-loader-pulse-dot{width:7px;height:7px;border-radius:50%;background:var(--emerald, #1e6b52);display:inline-block;box-shadow:0 0 #1e6b52b3;animation:pulseGreen 1.8s infinite}@keyframes pulseGreen{0%{transform:scale(.95);box-shadow:0 0 #1e6b52b3}70%{transform:scale(1);box-shadow:0 0 0 6px #1e6b5200}to{transform:scale(.95);box-shadow:0 0 #1e6b5200}}.geeky-mode-switcher{display:inline-flex;align-items:center;background:var(--bg-subtle);border:1px solid var(--line);border-radius:var(--radius-pill, 9999px);padding:3px;gap:2px}.geeky-mode-btn{font-family:var(--font-mono, monospace);font-size:11px;font-weight:500;padding:3px 10px;border-radius:var(--radius-pill, 9999px);color:var(--ink-muted);cursor:pointer;background:transparent;border:none;transition:all var(--transition-fast, .15s ease);display:flex;align-items:center;gap:5px}.geeky-mode-btn:hover{color:var(--ink)}.geeky-mode-btn.active{background:var(--bg-card);color:var(--ink);font-weight:600;box-shadow:var(--shadow-sm, 0 1px 3px rgba(27, 26, 23, .08));border:1px solid var(--line-strong)}.geeky-mode-btn.active.mode-geeky{color:var(--accent)}.geeky-mode-btn.active.mode-funny{color:var(--clay)}.geeky-loader-stage{width:100%;max-width:440px;height:120px;display:flex;align-items:center;justify-content:center;position:relative;margin:6px 0 14px}.geeky-loader-stage.stage-sm{max-width:300px;height:80px;margin:4px 0 8px}.geeky-loader-svg{width:100%;height:100%;overflow:visible}.animated-road-dashes{animation:roadRace .55s linear infinite}@keyframes roadRace{0%{stroke-dashoffset:0}to{stroke-dashoffset:32}}.animated-wheel{transform-box:fill-box;transform-origin:center;animation:wheelSpin .45s linear infinite}@keyframes wheelSpin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.car-chassis-geeky{transform-origin:200px 85px;animation:geekySuspension 1.2s ease-in-out infinite alternate}@keyframes geekySuspension{0%{transform:translateY(0) rotate(0)}25%{transform:translateY(-1.5px) rotate(-.4deg)}50%{transform:translateY(1.2px) rotate(.3deg)}75%{transform:translateY(-.8px) rotate(-.2deg)}to{transform:translateY(.5px) rotate(.4deg)}}.car-chassis-funny{transform-origin:200px 85px;animation:funnySuspension .85s cubic-bezier(.45,.05,.55,.95) infinite alternate}@keyframes funnySuspension{0%{transform:translateY(0) rotate(-.6deg)}30%{transform:translateY(-3px) rotate(1.2deg)}60%{transform:translateY(2px) rotate(-1deg)}to{transform:translateY(-1px) rotate(.8deg)}}.funny-cargo-box{transform-origin:195px 38px;animation:cargoWobble .75s ease-in-out infinite alternate}@keyframes cargoWobble{0%{transform:rotate(-3deg) translateY(0)}50%{transform:rotate(2.5deg) translateY(-2px)}to{transform:rotate(-2deg) translateY(1px)}}.lidar-beam{transform-origin:215px 43px;animation:lidarSweep 1.6s ease-in-out infinite}@keyframes lidarSweep{0%{transform:scaleX(.4) rotate(-35deg);opacity:.2}50%{transform:scaleX(1) rotate(15deg);opacity:.7}to{transform:scaleX(.4) rotate(-35deg);opacity:.2}}.neural-core-glow{animation:neuralPulse 1.4s ease-in-out infinite alternate}@keyframes neuralPulse{0%{r:3.5;opacity:.6}to{r:5.5;opacity:1}}.exhaust-particle-1{animation:exhaustDrift1 1.1s cubic-bezier(.1,.6,.8,1) infinite}.exhaust-particle-2{animation:exhaustDrift2 1.1s cubic-bezier(.1,.6,.8,1) infinite .35s}.exhaust-particle-3{animation:exhaustDrift3 1.1s cubic-bezier(.1,.6,.8,1) infinite .7s}@keyframes exhaustDrift1{0%{transform:translate(0) scale(.6);opacity:.9}to{transform:translate(-34px,-12px) scale(1.6);opacity:0}}@keyframes exhaustDrift2{0%{transform:translate(0) scale(.5);opacity:.85}to{transform:translate(-38px,-18px) scale(1.8);opacity:0}}@keyframes exhaustDrift3{0%{transform:translate(0) scale(.7);opacity:.95}to{transform:translate(-42px,-8px) scale(2);opacity:0}}.speed-line-1{animation:speedStreak .7s linear infinite}.speed-line-2{animation:speedStreak .7s linear infinite .25s}.speed-line-3{animation:speedStreak .7s linear infinite .45s}@keyframes speedStreak{0%{transform:translate(40px);opacity:0}30%{opacity:.7}70%{opacity:.7}to{transform:translate(-80px);opacity:0}}.ground-shadow{transform-origin:200px 116px;animation:shadowPulse 1.2s ease-in-out infinite alternate}@keyframes shadowPulse{0%{transform:scaleX(1);opacity:.25}to{transform:scaleX(.92);opacity:.15}}.geeky-loader-telemetry{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px 16px;padding:6px 12px;background:var(--bg-subtle);border:1px solid var(--line);border-radius:var(--radius-sm, 6px);font-family:var(--font-mono, monospace);font-size:11.5px;color:var(--ink-secondary);margin-bottom:12px;width:100%}.telemetry-item{display:flex;align-items:center;gap:4px}.telemetry-key{color:var(--ink-muted)}.telemetry-val{font-weight:600}.telemetry-val.geeky-val{color:var(--accent)}.telemetry-val.funny-val{color:var(--clay)}.geeky-loader-message{font-family:var(--font-serif, serif);font-size:18px;font-weight:500;color:var(--ink);margin:0 0 6px;line-height:1.3}.card-sm .geeky-loader-message{font-size:15px;margin-bottom:4px}.geeky-loader-quote-box{min-height:24px;display:flex;align-items:center;justify-content:center;margin-top:2px}.geeky-loader-quote{font-family:var(--font-mono, monospace);font-size:12.5px;color:var(--ink-muted);font-style:italic;display:inline-block;transition:opacity .22s ease,transform .22s ease;animation:quoteFadeIn .35s ease-out}@keyframes quoteFadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.geeky-loader-subtext{font-size:12px;color:var(--ink-faint);margin-top:6px}.geeky-loader-inline{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-md, 10px);width:100%}.geeky-loader-inline-car{width:80px;height:40px;flex-shrink:0}.geeky-loader-inline-text{display:flex;flex-direction:column;text-align:left;flex:1}.geeky-loader-inline-title{font-family:var(--font-mono, monospace);font-size:12px;font-weight:600;color:var(--ink)}.geeky-loader-inline-sub{font-size:11px;color:var(--ink-muted)}@media (prefers-reduced-motion: reduce){.animated-road-dashes,.animated-wheel,.car-chassis-geeky,.car-chassis-funny,.funny-cargo-box,.lidar-beam,.neural-core-glow,.exhaust-particle-1,.exhaust-particle-2,.exhaust-particle-3,.speed-line-1,.speed-line-2,.speed-line-3,.ground-shadow,.pulseGreen,.geeky-loader-top-bar{animation:none!important}.animated-road-dashes{stroke-dashoffset:0!important}}