@font-face{font-family:Fraunces Fallback;src:local("Georgia");size-adjust:111.2%;ascent-override:87.9%;descent-override:27%;line-gap-override:0%}@font-face{font-family:Inter Fallback;src:local("Arial");size-adjust:107.6%;ascent-override:90.1%;descent-override:22.6%;line-gap-override:0%}@font-face{font-family:Noto Fallback;src:local("Microsoft YaHei"),local("PingFang SC");size-adjust:100%;ascent-override:88%;descent-override:12%;line-gap-override:0%}:root{--bg-base: #f6f5f1;--bg-surface: #fbfaf7;--bg-elevated: #ffffff;--border-subtle: rgba(20, 20, 35, .1);--border-strong: rgba(20, 20, 35, .22);--text-primary: #23242b;--text-secondary: #5c5d6e;--text-inverse: #ffffff;--paper-warm: #f4efe6;--brand-1: #8b7cf6;--brand-2: #c9a7e8;--brand-3: #e1b98f;--brand-gradient: linear-gradient(120deg, var(--brand-1) 0%, var(--brand-2) 52%, var(--brand-3) 100%);--link: #5a4bd9;--link-hover: #493bb8;--ctr-amber: #facc15;--success: #22c55e;--warning: #facc15;--font-serif: "Fraunces", "Fraunces Fallback", "Noto Sans SC", "Noto Fallback", Georgia, "Times New Roman", serif;--font-sans: "Inter", "Inter Fallback", "Noto Sans SC", "Noto Fallback", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--radius-card: 16px;--radius-button: 12px;--radius-input: 10px;--shadow-card: 0 8px 30px rgba(60, 50, 40, .1);--shadow-pop: 0 16px 48px rgba(60, 50, 40, .14);--sp-1: 4px;--sp-2: 8px;--sp-3: 12px;--sp-4: 16px;--sp-5: 24px;--sp-6: 32px;--sp-7: 48px;--sp-8: 64px;--sp-9: 96px;--container-max: 1200px;--measure: 73ch;--header-h: 68px;--text-h1: 48px;--text-h2: 32px;--text-h3: 22px;--text-body: 16px;--text-small: 14px;--ease-out: cubic-bezier(.22, 1, .36, 1)}[data-theme=dark]{--bg-base: #0f0f14;--bg-surface: #17171f;--bg-elevated: #1e1e2a;--border-subtle: rgba(255, 255, 255, .08);--border-strong: rgba(255, 255, 255, .16);--text-primary: #f5f5f7;--text-secondary: #a0a0b0;--text-inverse: #14141c;--link: #c9a7e8;--link-hover: #e1b98f;--shadow-card: 0 8px 30px rgba(0, 0, 0, .45);--shadow-pop: 0 16px 48px rgba(0, 0, 0, .55)}*,*:before,*:after{box-sizing:border-box}*{margin:0}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{font-family:var(--font-sans);font-size:var(--text-body);line-height:1.65;color:var(--text-primary);background:var(--bg-base);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;min-height:100vh;display:flex;flex-direction:column}.page-main{flex:1 0 auto}img,svg,video{display:block;max-width:100%}h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;line-height:1.18;letter-spacing:-.01em;text-wrap:balance}h1{font-size:var(--text-h1)}h2{font-size:var(--text-h2)}h3{font-size:var(--text-h3)}p{max-width:70ch}a{color:var(--link);text-decoration:none;transition:color .2s var(--ease-out)}a:hover{color:var(--link-hover)}button{font:inherit;cursor:pointer}ul,ol{padding:0;list-style:none}:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:4px}.container{width:100%;max-width:var(--container-max);margin-inline:auto;padding-inline:var(--sp-5)}.narrow{max-width:820px}.section{padding-block:var(--sp-9)}.section-alt{background:var(--bg-surface);border-block:1px solid var(--border-subtle)}.section-head{text-align:center;margin-bottom:var(--sp-7)}.section-title{margin-bottom:var(--sp-3)}.section-subtitle{color:var(--text-secondary);font-size:17px;margin-inline:auto}.section-cta{text-align:center;margin-top:var(--sp-6)}.center-text{text-align:center}.center-text p{margin-inline:auto}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.skip-link{position:absolute;left:var(--sp-4);top:-48px;z-index:100;padding:var(--sp-2) var(--sp-4);background:var(--bg-elevated);border:1px solid var(--border-strong);border-radius:var(--radius-button);color:var(--text-primary);transition:top .2s var(--ease-out)}.skip-link:focus{top:var(--sp-3)}.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease-out),transform .6s var(--ease-out)}.reveal.is-visible{opacity:1;transform:none}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}}@media(max-width:768px){:root{--text-h1: 36px;--text-h2: 27px;--text-h3: 19px}.section{padding-block:64px}}@media(max-width:420px){:root{--text-h1: 30px;--text-h2: 24px}.container{padding-inline:var(--sp-4)}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);padding:10px 22px;border-radius:var(--radius-button);border:1px solid transparent;font-weight:600;font-size:15px;line-height:1.2;white-space:nowrap;transition:transform .2s var(--ease-out),border-color .2s var(--ease-out),background .2s var(--ease-out),box-shadow .2s var(--ease-out)}.btn:hover{transform:translateY(-2px);color:var(--text-primary)}.btn-primary{background:var(--brand-gradient);color:#15131f;box-shadow:0 6px 20px #8b7cf659}.btn-primary:hover{color:#15131f;box-shadow:0 10px 28px #c9a7e866}.btn-secondary{background:var(--bg-elevated);border-color:var(--border-strong);color:var(--text-primary)}.btn-secondary:hover{border-color:var(--brand-2);color:var(--text-primary)}.btn-ghost{background:transparent;border-color:var(--border-subtle);color:var(--text-secondary)}.btn-ghost:hover{color:var(--text-primary);border-color:var(--border-strong)}.btn-lg{padding:15px 30px;font-size:16px}.btn-sm{padding:7px 14px;font-size:13px}.card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-card);padding:var(--sp-5);transition:transform .25s var(--ease-out),border-color .25s var(--ease-out),box-shadow .25s var(--ease-out)}.card:hover{transform:translateY(-2px);border-color:var(--border-strong);box-shadow:var(--shadow-card)}.badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;border:1px solid var(--border-subtle);background:var(--bg-elevated);color:var(--text-secondary);font-size:12px;font-weight:600;letter-spacing:.02em}.badge-phase{color:var(--link);border-color:#e1b98f59;background:#e1b98f14;margin-bottom:var(--sp-4)}.input{width:100%;padding:12px 14px;border-radius:var(--radius-input);border:1px solid var(--border-strong);background:var(--bg-base);color:var(--text-primary);font-size:15px}.input::placeholder{color:var(--text-secondary)}.input:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 3px #8b7cf62e}.placeholder-card{padding:var(--sp-7);max-width:760px;margin-inline:auto}.placeholder-actions{display:flex;gap:var(--sp-3);flex-wrap:wrap;margin-top:var(--sp-5)}.check-list{margin:var(--sp-5) 0;display:grid;gap:var(--sp-3)}.check-list li{position:relative;padding-left:30px;color:var(--text-secondary)}.check-list li:before{content:"";position:absolute;left:0;top:4px;width:18px;height:18px;border-radius:50%;background:var(--brand-gradient);box-shadow:inset 0 0 0 4px var(--bg-surface)}.skeleton-lines{margin-top:var(--sp-6);display:grid;gap:var(--sp-3)}.skeleton-lines span{height:14px;border-radius:7px;background:linear-gradient(90deg,var(--bg-elevated),var(--bg-base),var(--bg-elevated));opacity:.7}.skeleton-lines .w75{width:75%}.skeleton-lines .w60{width:60%}.error-code{font-family:var(--font-serif);font-size:96px;line-height:1;background:var(--brand-gradient);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:var(--sp-4)}.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg-base) 72%,transparent);-webkit-backdrop-filter:blur(14px) saturate(1.4);backdrop-filter:blur(14px) saturate(1.4);border-bottom:1px solid var(--border-subtle)}.header-inner{display:flex;align-items:center;gap:var(--sp-4);min-height:var(--header-h)}.brand{display:inline-flex;align-items:center;gap:var(--sp-2);color:var(--text-primary);font-family:var(--font-serif);font-weight:700;font-size:19px}.brand:hover{color:var(--text-primary)}.primary-nav{margin-left:auto}.nav-list{display:flex;align-items:center;gap:var(--sp-5)}.nav-link{color:var(--text-secondary);font-size:14.5px;font-weight:500;padding:6px 2px;border-bottom:2px solid transparent}.nav-link:hover,.nav-link[aria-current=page]{color:var(--text-primary)}.nav-link[aria-current=page]{border-bottom-color:var(--brand-2)}.header-actions{display:flex;align-items:center;gap:var(--sp-2)}.lang-switch{display:inline-flex;align-items:center;justify-content:center;min-width:38px;padding:6px 10px;border-radius:var(--radius-button);border:1px solid var(--border-subtle);color:var(--text-secondary);font-size:13px;font-weight:600}.lang-switch:hover{color:var(--text-primary);border-color:var(--border-strong)}.lang-switch.is-disabled{opacity:.35;pointer-events:none}.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:var(--radius-button);border:1px solid var(--border-subtle);background:transparent;color:var(--text-secondary)}.theme-toggle:hover{color:var(--text-primary);border-color:var(--border-strong)}.icon-sun{display:block}.icon-moon{display:none}[data-theme=dark] .icon-moon{display:block}[data-theme=dark] .icon-sun{display:none}.nav-toggle{display:none;margin-left:auto;width:42px;height:38px;border-radius:var(--radius-button);border:1px solid var(--border-subtle);background:transparent;flex-direction:column;align-items:center;justify-content:center;gap:4px}.nav-toggle span{width:18px;height:2px;border-radius:1px;background:var(--text-primary)}.breadcrumb{padding-top:var(--sp-6)}.breadcrumb ol{display:flex;flex-wrap:wrap;gap:var(--sp-2);font-size:13.5px;color:var(--text-secondary)}.breadcrumb li+li:before{content:"/";margin-right:var(--sp-2);color:var(--text-secondary)}.breadcrumb a{color:var(--text-secondary)}.breadcrumb a:hover{color:var(--brand-2)}.site-footer{margin-top:auto;border-top:1px solid var(--border-subtle);background:var(--bg-surface);padding-top:var(--sp-8)}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:var(--sp-6);padding-bottom:var(--sp-7)}.footer-brand .footer-tagline{margin:var(--sp-4) 0 var(--sp-4);color:var(--text-secondary);font-size:14.5px}.footer-title{font-family:var(--font-sans);font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-secondary);margin-bottom:var(--sp-4)}.footer-col ul{display:grid;gap:var(--sp-3)}.footer-col a{color:var(--text-secondary);font-size:14.5px}.footer-col a:hover{color:var(--text-primary)}.social-row{display:flex;gap:var(--sp-3)}.social-link{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;border:1px solid var(--border-subtle);color:var(--text-secondary)}.social-link:hover{color:var(--text-primary);border-color:var(--border-strong);transform:translateY(-2px)}.footer-bottom{display:flex;justify-content:space-between;gap:var(--sp-4);flex-wrap:wrap;padding-block:var(--sp-5);border-top:1px solid var(--border-subtle);color:var(--text-secondary);font-size:13px}.grid{display:grid;gap:var(--sp-5)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}@media(max-width:1024px){.grid-4{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr;gap:var(--sp-6) var(--sp-5)}}@media(max-width:768px){.nav-toggle{display:inline-flex}.header-actions{margin-left:0}.primary-nav{position:absolute;top:var(--header-h);left:0;right:0;margin:0;background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);display:none}.primary-nav.is-open{display:block}.nav-list{flex-direction:column;align-items:stretch;gap:0;padding:var(--sp-3) var(--sp-5) var(--sp-4)}.nav-list a{display:block;padding:var(--sp-3) 0;font-size:16px}.grid-3,.footer-grid{grid-template-columns:1fr}}@media(max-width:480px){.grid-4{grid-template-columns:1fr}.header-actions .btn-ghost{display:none}}