:root{--pt-accent: #667eea;--pt-accent-strong: #5568d6;--pt-relay: #765aa2;--pt-canvas-1: #fbfcff;--pt-canvas-2: #f5f7fd;--pt-canvas-3: #eef1fb;--pt-text-primary: #282c4e;--pt-text-secondary: rgba(60, 66, 110, .72);--pt-text-muted: rgba(60, 66, 110, .5);--pt-text-on-accent: #ffffff;--pt-surface-base: #ffffff;--pt-surface-card: rgba(255, 255, 255, .86);--pt-surface-subtle: rgba(102, 126, 234, .06);--pt-border-hairline: rgba(102, 126, 234, .18);--pt-shadow-soft: 0 8px 24px rgba(60, 66, 110, .12);--pt-shadow-float: 0 12px 40px rgba(60, 66, 110, .16);--pt-radius-sm: 8px;--pt-radius-md: 12px;--pt-radius-lg: 18px;--pt-radius-xl: 28px;--pt-radius-full: 999px;--pt-space-2xs: 4px;--pt-space-xs: 8px;--pt-space-sm: 12px;--pt-space-md: 20px;--pt-space-lg: 32px;--pt-space-xl: 56px;--pt-space-2xl: 96px;--pt-font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--pt-font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;--pt-content-max: 1120px;--pt-rail-gutter: clamp(20px, 5vw, 64px);--pt-motion-fast: .14s;--pt-motion-normal: .26s;--pt-ease: cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--pt-font-sans);color:var(--pt-text-primary);background:radial-gradient(circle at 22% 18%,rgba(102,126,234,.08),transparent 42%),radial-gradient(circle at 82% 8%,rgba(118,90,162,.06),transparent 40%),linear-gradient(160deg,var(--pt-canvas-1),var(--pt-canvas-2) 55%,var(--pt-canvas-3));background-attachment:fixed;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;line-height:1.6}a{color:inherit;text-decoration:none}h1,h2,h3{color:var(--pt-text-primary);line-height:1.15;letter-spacing:-.01em;margin:0}p{margin:0}.pt-shell{width:min(100%,var(--pt-content-max));margin:0 auto;padding-inline:var(--pt-rail-gutter)}.pt-btn{display:inline-flex;align-items:center;gap:var(--pt-space-xs);height:40px;padding-inline:var(--pt-space-md);border-radius:var(--pt-radius-full);font-weight:600;font-size:14px;cursor:pointer;border:1px solid transparent;transition:transform var(--pt-motion-fast) var(--pt-ease),background var(--pt-motion-fast) var(--pt-ease),box-shadow var(--pt-motion-fast) var(--pt-ease)}.pt-btn--primary{background:var(--pt-accent);color:var(--pt-text-on-accent);box-shadow:var(--pt-shadow-soft)}.pt-btn--primary:hover{background:var(--pt-accent-strong);transform:translateY(-1px)}.pt-btn--ghost{background:transparent;color:var(--pt-text-primary);border-color:var(--pt-border-hairline)}.pt-btn--ghost:hover{background:var(--pt-surface-subtle)}.pt-eyebrow{font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--pt-accent)}.pt-indexed-card{position:relative;display:block;padding:var(--pt-space-lg);background:var(--pt-surface-card);border:1px solid var(--pt-border-hairline);border-radius:var(--pt-radius-lg);box-shadow:var(--pt-shadow-soft);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);outline:none;transition:border-color var(--pt-motion-fast) var(--pt-ease),box-shadow var(--pt-motion-fast) var(--pt-ease),transform var(--pt-motion-normal) var(--pt-ease)}.pt-indexed-card:hover,.pt-indexed-card:focus-visible,.pt-indexed-card[data-open=true]{border-color:var(--pt-accent);box-shadow:var(--pt-shadow-float);transform:translateY(-3px)}.pt-indexed-card--with-tip{padding-bottom:calc(var(--pt-space-lg) + var(--pt-space-lg));cursor:pointer}.pt-indexed-card__head{display:flex;align-items:center;min-width:0;min-height:48px;gap:var(--pt-space-sm);margin-bottom:var(--pt-space-sm)}.pt-indexed-card__number{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;width:34px;height:34px;border-radius:var(--pt-radius-full);color:var(--pt-text-on-accent);background:linear-gradient(135deg,var(--pt-accent),var(--pt-relay));font-size:1rem;font-weight:800}.pt-indexed-card__title{min-width:0;font-size:1.1rem;font-weight:700;line-height:1.35}.pt-indexed-card__body{color:var(--pt-text-secondary);font-size:.95rem;line-height:1.65}.pt-indexed-card__tip{position:absolute;left:var(--pt-space-lg);bottom:var(--pt-space-md);padding:var(--pt-space-2xs) var(--pt-space-sm);border-radius:var(--pt-radius-full);color:var(--pt-text-on-accent);background:var(--pt-text-primary);font-size:12px;font-weight:600;opacity:0;pointer-events:none;transform:translateY(4px);transition:opacity var(--pt-motion-fast) var(--pt-ease),transform var(--pt-motion-fast) var(--pt-ease)}.pt-indexed-card:hover .pt-indexed-card__tip,.pt-indexed-card:focus-visible .pt-indexed-card__tip,.pt-indexed-card[data-open=true] .pt-indexed-card__tip{opacity:1;transform:translateY(0)}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.astro-route-announcer{position:absolute;left:0;top:0;clip:rect(0 0 0 0);clip-path:inset(50%);overflow:hidden;white-space:nowrap;width:1px;height:1px}.pt-skip[data-astro-cid-5hce7sga]{position:absolute;left:-999px;top:0;background:var(--pt-accent);color:var(--pt-text-on-accent);padding:8px 16px;border-radius:0 0 var(--pt-radius-md) 0;z-index:100}.pt-skip[data-astro-cid-5hce7sga]:focus{left:0}.pt-header[data-astro-cid-5hce7sga]{position:sticky;top:0;z-index:40;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);background:#fbfcffb8;border-bottom:1px solid var(--pt-border-hairline)}.pt-header__inner[data-astro-cid-5hce7sga]{display:flex;align-items:center;gap:var(--pt-space-lg);height:68px}.pt-brand[data-astro-cid-5hce7sga]{width:48px;height:48px;display:grid;place-items:center;flex:0 0 auto;border-radius:10px;background:#fff}.pt-brand__logo[data-astro-cid-5hce7sga]{width:40px;height:auto;object-fit:contain}.pt-nav[data-astro-cid-5hce7sga]{display:grid;grid-template-columns:72px 112px 88px 104px;gap:var(--pt-space-md);margin-right:auto;white-space:nowrap}.pt-nav__link[data-astro-cid-5hce7sga]{display:grid;place-items:center;font-size:15px;color:var(--pt-text-secondary);padding:6px 2px;border-bottom:2px solid transparent;transition:color var(--pt-motion-fast) var(--pt-ease)}.pt-nav__link[data-astro-cid-5hce7sga]:hover{color:var(--pt-text-primary)}.pt-nav__link--active[data-astro-cid-5hce7sga]{color:var(--pt-text-primary);border-bottom-color:var(--pt-accent)}.pt-header__actions[data-astro-cid-5hce7sga]{display:flex;align-items:center;gap:var(--pt-space-sm);flex:0 0 auto}.pt-lang[data-astro-cid-5hce7sga]{display:inline-grid;grid-template-columns:repeat(2,72px);padding:3px;border-radius:var(--pt-radius-full);background:var(--pt-surface-subtle);border:1px solid var(--pt-border-hairline)}.pt-lang__opt[data-astro-cid-5hce7sga]{display:grid;place-items:center;width:72px;height:32px;font-size:13px;font-weight:600;border-radius:var(--pt-radius-full);color:var(--pt-text-secondary);white-space:nowrap;transition:color var(--pt-motion-fast) var(--pt-ease),background var(--pt-motion-fast) var(--pt-ease),box-shadow var(--pt-motion-fast) var(--pt-ease)}.pt-lang__opt--active[data-astro-cid-5hce7sga]{background:var(--pt-surface-base);color:var(--pt-accent);box-shadow:var(--pt-shadow-soft)}.pt-footer[data-astro-cid-5hce7sga]{margin-top:var(--pt-space-2xl);border-top:1px solid var(--pt-border-hairline);padding-block:var(--pt-space-lg)}.pt-footer__inner[data-astro-cid-5hce7sga]{display:flex;align-items:center;justify-content:space-between;gap:var(--pt-space-md);flex-wrap:wrap;color:var(--pt-text-secondary);font-size:14px}.pt-footer__brand[data-astro-cid-5hce7sga]{display:inline-flex;align-items:center;gap:var(--pt-space-xs);font-weight:500;color:var(--pt-text-primary)}.pt-footer__logo[data-astro-cid-5hce7sga]{width:24px;height:24px;border-radius:5px}@media(max-width:920px){.pt-nav[data-astro-cid-5hce7sga],.pt-header__gh[data-astro-cid-5hce7sga]{display:none}}@keyframes astroFadeInOut{0%{opacity:1}to{opacity:0}}@keyframes astroFadeIn{0%{opacity:0;mix-blend-mode:plus-lighter}to{opacity:1;mix-blend-mode:plus-lighter}}@keyframes astroFadeOut{0%{opacity:1;mix-blend-mode:plus-lighter}to{opacity:0;mix-blend-mode:plus-lighter}}@keyframes astroSlideFromRight{0%{transform:translate(100%)}}@keyframes astroSlideFromLeft{0%{transform:translate(-100%)}}@keyframes astroSlideToRight{to{transform:translate(100%)}}@keyframes astroSlideToLeft{to{transform:translate(-100%)}}@media(prefers-reduced-motion){::view-transition-group(*),::view-transition-old(*),::view-transition-new(*){animation:none!important}[data-astro-transition-scope]{animation:none!important}}