:root{--bg-primary: #0a0a0f;--bg-secondary: #111118;--bg-card: #16161f;--bg-card-hover: #1c1c28;--bg-elevated: #1e1e2a;--border: #2a2a3a;--border-light: #333346;--text-primary: #e8e8f0;--text-secondary: #9898b0;--text-muted: #9595b5;--accent: #6c5ce7;--accent-light: #a29bfe;--accent-glow: rgba(108, 92, 231, .3);--accent-subtle: rgba(108, 92, 231, .08);--green: #00cec9;--green-glow: rgba(0, 206, 201, .2);--red: #ff6b6b;--red-glow: rgba(255, 107, 107, .2);--yellow: #feca57;--yellow-glow: rgba(254, 202, 87, .2);--blue: #54a0ff;--blue-glow: rgba(84, 160, 255, .2);--accent-5: rgba(108, 92, 231, .05);--accent-6: rgba(108, 92, 231, .06);--accent-8: rgba(108, 92, 231, .08);--accent-10: rgba(108, 92, 231, .1);--accent-15: rgba(108, 92, 231, .15);--accent-20: rgba(108, 92, 231, .2);--accent-25: rgba(108, 92, 231, .25);--accent-30: rgba(108, 92, 231, .3);--accent-40: rgba(108, 92, 231, .4);--accent-60: rgba(108, 92, 231, .6);--accent-80: rgba(108, 92, 231, .8);--green-6: rgba(0, 206, 201, .06);--green-8: rgba(0, 206, 201, .08);--green-10: rgba(0, 206, 201, .1);--green-15: rgba(0, 206, 201, .15);--green-20: rgba(0, 206, 201, .2);--green-25: rgba(0, 206, 201, .25);--green-30: rgba(0, 206, 201, .3);--red-10: rgba(255, 107, 107, .1);--red-15: rgba(255, 107, 107, .15);--red-20: rgba(255, 107, 107, .2);--red-30: rgba(255, 107, 107, .3);--yellow-10: rgba(254, 202, 87, .1);--yellow-15: rgba(254, 202, 87, .15);--yellow-20: rgba(254, 202, 87, .2);--blue-15: rgba(84, 160, 255, .15);--orange: #ff9f43;--purple: var(--accent);--purple-light: var(--accent-light);--font-main: var(--font);--accent-dim: var(--border-light);--container: 1280px;--container-narrow: 800px;--input-bg: rgba(255, 255, 255, .05);--white-translucent: rgba(255, 255, 255, .04);--offline-bg: #636e72;--wc-accent: #fdcb6e;--wc-accent-bg: rgba(253, 203, 110, .1);--wc-accent-border: rgba(253, 203, 110, .2);--wc-checked-text: #1a1a2e;--ev-study-bg: rgba(255, 255, 255, .05);--font: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", monospace;--text-2xs: .65rem;--text-xs: .75rem;--text-sm: .85rem;--text-base: .95rem;--text-md: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 2rem;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .12);--shadow-md: 0 4px 12px rgba(0, 0, 0, .15);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .2);--shadow-glow: 0 0 20px var(--accent-20);--transition: .2s ease;--transition-slow: .4s ease}.light-theme{--bg-primary: #f5f5fa;--bg-secondary: #eeeef4;--bg-card: #ffffff;--bg-card-hover: #f0f0f8;--bg-elevated: #ffffff;--border: #d8d8e8;--border-light: #c8c8d8;--text-primary: #1a1a2e;--text-secondary: #555570;--text-muted: #6a6a90;--accent-glow: rgba(108, 92, 231, .15);--accent-subtle: rgba(108, 92, 231, .05);--green-glow: rgba(0, 180, 148, .15);--red-glow: rgba(255, 107, 107, .15);--yellow-glow: rgba(254, 202, 87, .15);--blue-glow: rgba(84, 160, 255, .15);--accent-5: rgba(108, 92, 231, .03);--accent-6: rgba(108, 92, 231, .04);--accent-8: rgba(108, 92, 231, .05);--accent-10: rgba(108, 92, 231, .08);--accent-15: rgba(108, 92, 231, .1);--accent-20: rgba(108, 92, 231, .15);--accent-25: rgba(108, 92, 231, .18);--accent-30: rgba(108, 92, 231, .22);--accent-40: rgba(108, 92, 231, .3);--green-6: rgba(0, 180, 148, .04);--green-8: rgba(0, 180, 148, .06);--green-10: rgba(0, 180, 148, .08);--green-15: rgba(0, 180, 148, .1);--green-20: rgba(0, 180, 148, .15);--green-25: rgba(0, 180, 148, .18);--green-30: rgba(0, 180, 148, .22);--red-10: rgba(220, 80, 80, .08);--red-15: rgba(220, 80, 80, .12);--red-20: rgba(220, 80, 80, .15);--red-30: rgba(220, 80, 80, .22);--yellow-10: rgba(200, 150, 10, .08);--yellow-15: rgba(200, 150, 10, .12);--yellow-20: rgba(200, 150, 10, .15);--blue-15: rgba(58, 123, 213, .12);--input-bg: rgba(0, 0, 0, .03);--white-translucent: rgba(0, 0, 0, .04);--offline-bg: #b2bec3;--wc-accent: #e8a317;--wc-accent-bg: rgba(232, 163, 23, .1);--wc-accent-border: rgba(232, 163, 23, .35);--wc-checked-text: #ffffff;--ev-study-bg: rgba(0, 0, 0, .04);--time-morning: #c8850a;--time-afternoon: #c4614a;--time-evening: #7c6dd8;--ev-meta-color: #007572;--ev-review-color: #3a7bd5;--ev-rct-color: #6c5ce7;--ev-cohort-color: #8a6508;--ev-large-color: #077070;--ev-medium-color: #636e72;--yellow: #9a7408;--green: #00a89e;--red: #e05252;--blue: #3a7bd5;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .1);--shadow-glow: 0 0 20px rgba(108, 92, 231, .1)}.light-theme .ambient-bg{display:none}.light-theme .nav{background:#f5f5faf2}.theme-toggle{background:none;border:1px solid var(--border);border-radius:50%;width:36px;height:36px;font-size:var(--text-md);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;margin-left:8px}.theme-toggle:hover{border-color:var(--accent);transform:scale(1.05)}.theme-toggle:active{transform:scale(.95)}.theme-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}*:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.bh-card:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;border-color:var(--accent)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}html{scroll-behavior:auto}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--accent-30)}html{scrollbar-width:thin;scrollbar-color:var(--border-light) var(--bg-secondary)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;font-size:16px;-webkit-font-smoothing:antialiased}body{font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;overflow-x:hidden}a{color:var(--accent-light);text-decoration:none}a:hover{color:var(--accent)}.ambient-bg{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}.ambient-orb{position:absolute;border-radius:50%;filter:blur(120px);opacity:.15;animation:float 20s ease-in-out infinite}.orb-1{width:600px;height:600px;background:var(--accent);top:-200px;left:-100px}.orb-2{width:500px;height:500px;background:var(--green);bottom:-150px;right:-100px;animation-delay:-7s}.orb-3{width:400px;height:400px;background:var(--blue);top:40%;left:50%;animation-delay:-14s}@keyframes float{0%,to{transform:translate(0) scale(1)}33%{transform:translate(30px,-30px) scale(1.05)}66%{transform:translate(-20px,20px) scale(.95)}}.container{max-width:var(--container);margin:0 auto;padding:0 var(--space-lg)}.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:#0a0a0fd9;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid transparent;transition:all .3s ease}.nav-inner{max-width:var(--container);margin:0 auto;padding:0 var(--space-lg);display:flex;align-items:center;justify-content:space-between;height:64px}.nav-logo{font-size:1.5rem;font-weight:900;color:var(--text-primary);letter-spacing:-.02em}.nav-link{color:var(--text-secondary);font-size:.875rem;font-weight:500;transition:color .2s ease;position:relative}.nav-link:after{content:"";position:absolute;bottom:-4px;left:50%;right:50%;height:2px;background:var(--accent);border-radius:1px;transition:left .25s ease,right .25s ease}.nav-link:hover,.nav-link.active{color:var(--text-primary)}.nav-link:hover:after,.nav-link.active:after{left:0;right:0}.nav-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.bh-title-link{color:inherit;text-decoration:none;border-bottom:1px dashed transparent;transition:border-color .15s,color .15s}.bh-title-link:hover{color:var(--accent);border-bottom-color:var(--accent)}.bh-title-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px}.accent{color:var(--accent-light)}.hero{position:relative;z-index:1;min-height:85vh;display:flex;align-items:center;justify-content:center;padding:var(--space-3xl) var(--space-lg) var(--space-2xl)}.hero:after{content:"";position:absolute;bottom:0;left:0;right:0;height:100px;background:linear-gradient(to top,var(--bg-primary),transparent);pointer-events:none;z-index:2}.hero-content{max-width:var(--container);width:100%;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:clamp(var(--space-xl),5vw,var(--space-3xl));align-items:center;position:relative;z-index:1}.hero-main{text-align:left;min-width:0}.hero-aside{display:flex;flex-direction:column;gap:var(--space-lg);min-width:0}.hero-badge{display:inline-block;padding:6px 20px;background:linear-gradient(135deg,var(--accent-15),var(--accent-8));border:1px solid var(--accent-30);border-radius:100px;font-size:.75rem;font-weight:700;color:var(--accent-light);letter-spacing:.12em;text-transform:uppercase;margin-bottom:var(--space-xl);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:0 0 20px var(--accent-15),inset 0 1px 0 var(--accent-20)}.hero-title{font-size:clamp(3.5rem,10vw,8rem);font-weight:900;line-height:.9;letter-spacing:-.04em;margin-bottom:var(--space-lg);text-shadow:0 2px 8px rgba(0,0,0,.3)}.accent-glow{color:var(--accent-light);text-shadow:0 0 40px var(--accent-glow),0 0 80px var(--accent-15)}.hero-subtitle{font-size:var(--text-lg);color:var(--text-secondary);line-height:1.7;max-width:560px;margin:0 0 var(--space-xl) 0}.hero-stats-card{background:linear-gradient(135deg,var(--accent-8),var(--accent-5));border:1px solid var(--accent-20);border-radius:var(--radius-xl);padding:var(--space-xl);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow-lg),inset 0 1px 0 var(--accent-15);position:relative;overflow:hidden}.hero-stats-card:before{content:"";position:absolute;top:-50%;right:-30%;width:280px;height:280px;background:radial-gradient(circle,var(--accent-15) 0%,transparent 60%);pointer-events:none}.hero-stats-label{font-size:var(--text-2xs, 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.5s;opacity:0}.hero-actions .btn-primary:hover:after{opacity:1;transform:rotate(45deg) translate(100%)}.hero-actions .btn-primary:hover{box-shadow:0 6px 25px var(--accent-40);transform:translateY(-2px)}.btn{display:inline-flex;align-items:center;gap:var(--space-sm);padding:.75rem 1.75rem;border-radius:var(--radius-md);font-family:var(--font);font-size:.9rem;font-weight:600;cursor:pointer;border:none;transition:all .2s ease;text-decoration:none}.btn:active{transform:translateY(0);opacity:.9}.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn-primary{background:var(--accent);color:#fff;box-shadow:0 4px 20px var(--accent-glow)}.btn-primary:hover{background:var(--accent-light);color:#fff;transform:translateY(-1px);box-shadow:0 6px 30px var(--accent-glow),var(--shadow-glow)}.btn-secondary{background:var(--bg-card);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-card-hover);color:var(--text-primary);border-color:var(--border-light);transform:translateY(-1px)}@keyframes sectionFadeInUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.section{position:relative;z-index:1;padding:var(--space-3xl) 0;scroll-margin-top:72px;animation:sectionFadeInUp .5s ease both}.section:nth-child(2){animation-delay:.1s}.section:nth-child(3){animation-delay:.15s}.section:nth-child(4){animation-delay:.2s}@media(prefers-reduced-motion:reduce){.section{animation:none!important}}.footer{position:relative;z-index:1;background:var(--bg-secondary);border-top:1px solid var(--border);padding:var(--space-3xl) 0 var(--space-xl)}@media(max-width:768px){.nav-link{min-height:44px;display:flex;align-items:center;padding:var(--space-sm) 0}}@media(max-width:480px){.hero-title{font-size:3.5rem}.bh-card{flex-wrap:wrap;gap:8px}.hero-actions .btn-primary{padding:12px 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21px;display:inline-flex;align-items:center;justify-content:center;white-space:normal;text-align:center}.btn-primary,.btn-primary:hover{color:#fff}.hp-hero-proof{display:flex;flex-wrap:wrap;gap:15px;font-size:10px;color:var(--text-muted);margin-top:21px}.hp-featured{padding:27px 28px 23px;border-radius:16px;background:linear-gradient(135deg,var(--accent-8),var(--bg-card))}.hp-featured .hero-stats-label{display:flex;align-items:center;gap:8px;font-size:10px;margin-bottom:24px}.hp-live-dot{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green-glow)}.hp-featured-meta{display:flex;justify-content:space-between;gap:15px;font-size:11px;color:var(--text-muted);margin-bottom:12px}.hp-featured h2{font-size:25px;line-height:1.35;letter-spacing:-.035em;margin:0;font-weight:750}.hp-featured h2 a{color:var(--text-primary)}.hp-featured h2 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