.kp-block{border-radius:12px;padding:14px 16px;margin-top:10px;border:1px solid transparent;line-height:1.8;font-size:15px}.kp-label{display:block;font-weight:800;font-size:13px;letter-spacing:.04em;margin-bottom:6px;opacity:.85}.kp-concept{background:#f5f8ff;border-color:#d6e0ff;color:#1a2240}.kp-method{background:#0f1226;border-color:#2a2f55;color:#e8ecff;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,Courier New,monospace;font-size:14px;white-space:pre-wrap;line-height:1.7}.kp-example{background:#eafaf0;border-color:#bfe9cf;color:#163a26;font-size:14.5px;white-space:pre-wrap}.kp-pitfall{background:#fff5e9;border-color:#ffd9a8;color:#5a3a10;font-size:14.5px;white-space:pre-wrap}.kp-pending{font-size:13px;color:#999}#landing-root{--bg: #f6f7fb;--bg-2: #eef0f8;--surface: #ffffff;--surface-glass: rgba(255, 255, 255, .72);--text: #16182a;--text-strong: #0c0e1c;--muted: #5b6178;--border: rgba(20, 24, 50, .08);--border-strong: rgba(20, 24, 50, .14);--primary: #667eea;--primary-2: #764ba2;--grad: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--grad-soft: linear-gradient(135deg, rgba(102, 126, 234, .14), rgba(118, 75, 162, .14));--shadow-sm: 0 2px 10px rgba(20, 24, 50, .06);--shadow-md: 0 14px 44px rgba(20, 24, 50, .1);--shadow-lg: 0 30px 80px rgba(20, 24, 50, .16);--ring: rgba(102, 126, 234, .45);--aurora-1: rgba(102, 126, 234, .34);--aurora-2: rgba(118, 75, 162, .28);--aurora-3: rgba(79, 172, 254, .22);--ok: #2bb673;--warn: #f5a623;--bad: #ef4d56;--nav-bg: rgba(255, 255, 255, .7);color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6;scroll-behavior:smooth;overflow-x:hidden;min-height:100vh;display:flex;flex-direction:column}#landing-root *,#landing-root *:before,#landing-root *:after{box-sizing:border-box;margin:0;padding:0}#landing-root>main{flex:1 0 auto;min-height:0}#landing-root[data-theme=dark]{--bg: #080a16;--bg-2: #0c0f1f;--surface: rgba(255, 255, 255, .045);--surface-glass: rgba(255, 255, 255, .05);--text: #e9ebf6;--text-strong: #ffffff;--muted: #9aa0bd;--border: rgba(255, 255, 255, .1);--border-strong: rgba(255, 255, 255, .18);--primary: #8b9bff;--primary-2: #b388ff;--grad: linear-gradient(135deg, #7c8cff 0%, #a06bff 100%);--grad-soft: linear-gradient(135deg, rgba(124, 140, 255, .2), rgba(160, 107, 255, .2));--shadow-sm: 0 2px 12px rgba(0, 0, 0, .35);--shadow-md: 0 14px 50px rgba(0, 0, 0, .45);--shadow-lg: 0 30px 80px rgba(0, 0, 0, .55);--ring: rgba(139, 155, 255, .55);--aurora-1: rgba(124, 140, 255, .4);--aurora-2: rgba(160, 107, 255, .34);--aurora-3: rgba(79, 172, 254, .26);--ok: #46d39a;--warn: #ffc24b;--bad: #ff6b73;--nav-bg: rgba(10, 13, 28, .6);color-scheme:dark}#landing-root,#landing-root .lp-surface,#landing-root .lp-card,#landing-root .lp-nav,#landing-root .lp-btn{transition:background-color .4s ease,color .4s ease,border-color .4s ease,box-shadow .4s ease}#landing-root a{color:inherit;text-decoration:none}#landing-root .skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--primary);color:#fff;padding:10px 16px;border-radius:0 0 8px}#landing-root .skip-link:focus{left:0}#landing-root .lp-container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}#landing-root .lp-section{padding:88px 0;position:relative}#landing-root .lp-section--alt{background:var(--grad-soft)}#landing-root .lp-eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);background:var(--surface-glass);border:1px solid var(--border);padding:6px 14px;border-radius:999px;margin-bottom:18px}#landing-root .lp-head{text-align:center;max-width:720px;margin:0 auto 52px}#landing-root .lp-head h2{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-.02em;color:var(--text-strong);line-height:1.2}#landing-root .lp-head p{margin-top:14px;color:var(--muted);font-size:17px}.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}#landing-root .lp-nav{position:fixed;inset:0 0 auto 0;z-index:100;backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);background:transparent;border-bottom:1px solid transparent}#landing-root .lp-nav.scrolled{background:var(--nav-bg);border-bottom-color:var(--border);box-shadow:var(--shadow-sm)}#landing-root .lp-nav__inner{max-width:1180px;margin:0 auto;height:68px;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}#landing-root .lp-brand{display:flex;align-items:center;gap:12px;cursor:pointer;-webkit-user-select:none;user-select:none}#landing-root .lp-brand__mark{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:22px;font-weight:800;color:#fff;background:var(--grad);box-shadow:0 6px 18px var(--ring)}#landing-root .lp-brand__name{font-size:18px;font-weight:800;color:var(--text-strong);line-height:1.1;display:flex;flex-direction:column}#landing-root .lp-brand__name small{font-size:11px;font-weight:600;color:var(--muted);letter-spacing:.08em}#landing-root .lp-nav__links{display:flex;align-items:center;gap:4px}#landing-root .lp-nav__links a.lp-link{padding:8px 14px;border-radius:10px;font-size:15px;font-weight:600;color:var(--muted);transition:color .2s ease,background .2s ease}#landing-root .lp-nav__links a.lp-link:hover{color:var(--text-strong);background:var(--surface-glass)}#landing-root .lp-nav__right{display:flex;align-items:center;gap:10px}#landing-root .lp-theme{display:inline-flex;background:var(--surface-glass);border:1px solid var(--border);border-radius:999px;padding:3px;gap:2px}#landing-root .lp-theme button{width:32px;height:30px;border:none;background:transparent;border-radius:999px;cursor:pointer;font-size:15px;color:var(--muted);display:grid;place-items:center;transition:all .2s ease}#landing-root .lp-theme button:hover{color:var(--text-strong)}#landing-root .lp-theme button.active{background:var(--grad);color:#fff;box-shadow:0 4px 12px var(--ring)}#landing-root .lp-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:15px;border-radius:12px;padding:12px 22px;cursor:pointer;border:1px solid transparent;transition:transform .25s cubic-bezier(.16,1,.3,1),box-shadow .25s ease,background .25s ease;will-change:transform}#landing-root .lp-btn--primary{color:#fff;background:var(--grad);box-shadow:0 10px 26px var(--ring)}#landing-root .lp-btn--primary:hover{transform:translateY(-2px) scale(1.03);box-shadow:0 16px 36px var(--ring)}#landing-root .lp-btn--ghost{color:var(--text-strong);background:var(--surface-glass);border-color:var(--border-strong)}#landing-root .lp-btn--ghost:hover{transform:translateY(-2px) scale(1.03);border-color:var(--primary)}#landing-root .lp-btn--lg{font-size:17px;padding:15px 30px;border-radius:14px}#landing-root .lp-burger{display:none;width:42px;height:42px;border:1px solid var(--border);background:var(--surface-glass);border-radius:10px;cursor:pointer;flex-direction:column;gap:4px;align-items:center;justify-content:center}#landing-root .lp-burger span{width:18px;height:2px;background:var(--text-strong);border-radius:2px}#landing-root .lp-mobile-menu{position:fixed;inset:68px 0 auto 0;z-index:99;background:var(--surface-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);padding:14px 24px 22px;display:flex;flex-direction:column;gap:6px}#landing-root .lp-mobile-menu a{padding:12px 14px;border-radius:10px;font-weight:600;color:var(--text)}#landing-root .lp-mobile-menu a:hover{background:var(--surface-glass)}#landing-root .lp-hero{position:relative;padding:150px 0 96px;overflow:hidden;min-height:100vh;display:flex;align-items:center;justify-content:center}#landing-root .lp-hero__bg{position:absolute;inset:-20% -10% auto -10%;height:720px;pointer-events:none;z-index:0;filter:blur(10px)}#landing-root .lp-hero__bg:before,#landing-root .lp-hero__bg:after{content:"";position:absolute;border-radius:50%;filter:blur(60px);opacity:.9}#landing-root .lp-hero__bg:before{width:520px;height:520px;left:-60px;top:0;background:var(--aurora-1);animation:lp-aurora-a 16s ease-in-out infinite alternate}#landing-root .lp-hero__bg:after{width:460px;height:460px;right:-40px;top:60px;background:var(--aurora-2);animation:lp-aurora-b 20s ease-in-out infinite alternate}#landing-root .lp-hero__inner{position:relative;z-index:1;max-width:880px;margin:0 auto;text-align:center}#landing-root .lp-hero h1{font-size:clamp(34px,6vw,60px);font-weight:900;letter-spacing:-.03em;line-height:1.12;color:var(--text-strong);margin-bottom:22px}#landing-root .lp-hero__sub{font-size:clamp(16px,2.4vw,20px);color:var(--muted);max-width:640px;margin:0 auto 34px}#landing-root .lp-hero__actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:46px}#landing-root .lp-hero__trust{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:14px 40px;padding-top:8px}#landing-root .lp-hero__trust li{font-size:14px;color:var(--muted)}#landing-root .lp-hero__trust strong{display:block;font-size:26px;font-weight:800;color:var(--text-strong)}@keyframes lp-aurora-a{0%{transform:translate(0) scale(1)}to{transform:translate(60px,40px) scale(1.15)}}@keyframes lp-aurora-b{0%{transform:translate(0) scale(1.1)}to{transform:translate(-50px,30px) scale(1)}}#landing-root .lp-stats{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--surface-glass)}#landing-root .lp-stats__inner{max-width:1180px;margin:0 auto;padding:40px 24px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}#landing-root .lp-stat{text-align:center}#landing-root .lp-stat__num{font-size:clamp(30px,5vw,46px);font-weight:900;letter-spacing:-.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;font-variant-numeric:tabular-nums}#landing-root .lp-stat__label{display:block;margin-top:6px;font-size:14px;color:var(--muted)}#landing-root .lp-grid{display:grid;gap:22px}#landing-root .lp-grid--3{grid-template-columns:repeat(3,1fr)}#landing-root .lp-grid--4{grid-template-columns:repeat(4,1fr)}#landing-root .lp-card{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:28px 26px;box-shadow:var(--shadow-sm);transition:transform .3s cubic-bezier(.16,1,.3,1),box-shadow .3s ease,border-color .3s ease}#landing-root .lp-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--border-strong)}#landing-root .lp-card__icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-size:26px;background:var(--grad-soft);border:1px solid var(--border);margin-bottom:16px}#landing-root .lp-card h3{font-size:19px;font-weight:800;color:var(--text-strong);margin-bottom:8px}#landing-root .lp-card p{font-size:14.5px;color:var(--muted)}#landing-root .lp-cat{text-align:center;padding:24px 14px;border-radius:16px;background:var(--surface);border:1px solid var(--border);transition:transform .3s cubic-bezier(.16,1,.3,1),box-shadow .3s ease,border-color .3s ease}#landing-root .lp-cat:hover{transform:translateY(-5px) scale(1.02);box-shadow:var(--shadow-md);border-color:var(--primary)}#landing-root .lp-cat__emoji{font-size:30px;display:block;margin-bottom:10px}#landing-root .lp-cat h3{font-size:16px;font-weight:800;color:var(--text-strong)}#landing-root .lp-cat span{font-size:13px;color:var(--muted)}#landing-root .lp-steps{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}#landing-root .lp-step{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:30px 26px;box-shadow:var(--shadow-sm)}#landing-root .lp-step__num{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:20px;font-weight:900;color:#fff;background:var(--grad);box-shadow:0 8px 20px var(--ring);margin-bottom:16px}#landing-root .lp-step h3{font-size:18px;font-weight:800;color:var(--text-strong);margin-bottom:8px}#landing-root .lp-step p{font-size:14.5px;color:var(--muted)}#landing-root .lp-band{border-radius:26px;background:var(--grad);padding:56px 40px;text-align:center;color:#fff;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}#landing-root .lp-band:after{content:"";position:absolute;width:360px;height:360px;right:-80px;top:-120px;background:#ffffff29;border-radius:50%;filter:blur(20px)}#landing-root .lp-band h2{font-size:clamp(24px,4vw,36px);font-weight:900;letter-spacing:-.02em;margin-bottom:14px}#landing-root .lp-band p{font-size:17px;opacity:.92;max-width:620px;margin:0 auto}#landing-root .lp-band__slogan{margin-top:22px;font-size:20px;font-weight:800;letter-spacing:.02em}#landing-root .lp-faq{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}#landing-root .lp-faq details{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:4px 22px;box-shadow:var(--shadow-sm);transition:border-color .25s ease,box-shadow .25s ease}#landing-root .lp-faq details[open]{border-color:var(--primary);box-shadow:var(--shadow-md)}#landing-root .lp-faq summary{cursor:pointer;list-style:none;padding:18px 0;font-size:17px;font-weight:700;color:var(--text-strong);display:flex;align-items:center;justify-content:space-between}#landing-root .lp-faq summary::-webkit-details-marker{display:none}#landing-root .lp-faq summary:after{content:"+";font-size:24px;font-weight:400;color:var(--primary);transition:transform .25s ease}#landing-root .lp-faq details[open] summary:after{transform:rotate(45deg)}#landing-root .lp-faq p{padding:0 0 20px;color:var(--muted);font-size:15px}#landing-root .lp-cta{text-align:center}#landing-root .lp-cta__inner{max-width:720px;margin:0 auto}#landing-root .lp-cta h2{font-size:clamp(26px,4.5vw,42px);font-weight:900;letter-spacing:-.02em;color:var(--text-strong);margin-bottom:14px}#landing-root .lp-cta p{color:var(--muted);font-size:17px;margin-bottom:30px}#landing-root .lp-footer{border-top:1px solid var(--border);background:var(--bg-2);padding:44px 0 32px;margin-top:40px}#landing-root .lp-footer__inner{max-width:1180px;margin:0 auto;padding:0 24px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px}#landing-root .lp-footer__brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--text-strong)}#landing-root .lp-footer__copy{font-size:13px;color:var(--muted);width:100%;text-align:center;margin-top:10px}#landing-root .lp-footer__links{display:flex;gap:18px;flex-wrap:wrap}#landing-root .lp-footer__links a{font-size:14px;color:var(--muted);font-weight:600}#landing-root .lp-footer__links a:hover{color:var(--primary)}#landing-root .lp-to-top{position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:14px;border:1px solid var(--border-strong);background:var(--surface-glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:var(--text-strong);font-size:20px;cursor:pointer;box-shadow:var(--shadow-md);opacity:0;transform:translateY(12px);pointer-events:none;transition:opacity .3s ease,transform .3s ease,background .2s ease;z-index:90}#landing-root .lp-to-top.show{opacity:1;transform:translateY(0);pointer-events:auto}#landing-root .lp-to-top:hover{background:var(--grad);color:#fff;border-color:transparent}#landing-root .lp-reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}#landing-root .lp-reveal.in-view{opacity:1;transform:none}@media (max-width: 980px){#landing-root .lp-grid--4{grid-template-columns:repeat(3,1fr)}#landing-root .lp-stats__inner{grid-template-columns:repeat(2,1fr);gap:28px 16px}}@media (max-width: 768px){#landing-root .lp-nav__links,#landing-root .lp-nav__right .lp-desktop-only{display:none}#landing-root .lp-burger{display:flex}#landing-root .lp-grid--3,#landing-root .lp-grid--4,#landing-root .lp-steps{grid-template-columns:1fr}#landing-root .lp-section{padding:64px 0}#landing-root .lp-hero{padding:120px 0 72px;min-height:100vh;display:flex;align-items:center;justify-content:center}#landing-root .lp-band{padding:40px 22px}}@media (max-width: 480px){#landing-root .lp-container,#landing-root .lp-nav__inner,#landing-root .lp-stats__inner,#landing-root .lp-footer__inner{padding-left:16px;padding-right:16px}#landing-root .lp-stats__inner{grid-template-columns:repeat(2,1fr)}}@media (prefers-reduced-motion: reduce){#landing-root,#landing-root *{animation:none!important;scroll-behavior:auto!important;transition-duration:.001ms!important}#landing-root .lp-reveal{opacity:1;transform:none}}*{margin:0;padding:0;box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{width:100%;min-height:100vh;overflow-x:hidden}html,body{overflow-x:hidden;max-width:100vw}@media (max-width: 768px){body{font-size:14px}}@media (max-width: 480px){body{font-size:13px}}