:root{--color-cyan: #2b93a3;--color-blue: #3a6fc4;--color-violet: #6a63c0;--color-primary: var(--color-blue);--color-teal: var(--color-cyan);--color-accent: var(--color-blue);--grad-brand: linear-gradient(120deg, #2ba6b6 0%, #3a6fc4 100%);--grad-brand-soft: linear-gradient(120deg, rgba(43, 147, 163, .12), rgba(58, 111, 196, .12));--grad-text: linear-gradient(120deg, #1f8ea0 0%, #2f63b8 100%);--color-bg: #f3f6fb;--color-bg-soft: #eef2f8;--color-surface: #ffffff;--color-surface-2: #f6f9fd;--color-line: rgba(18, 34, 66, .1);--color-line-strong: rgba(18, 34, 66, .17);--color-line-accent: rgba(58, 111, 196, .4);--surface-card: linear-gradient(160deg, #ffffff, #f5f8fd);--surface-card-weak: rgba(18, 34, 66, .025);--surface-card-hover: rgba(18, 34, 66, .045);--surface-panel: linear-gradient(160deg, #ffffff, #eef3fb);--input-bg: #ffffff;--color-media-bg: #05070f;--viz-bg: #eef3fb;--glass-bg: linear-gradient(160deg, rgba(255, 255, 255, .85), rgba(246, 249, 253, .7));--glow-cyan: rgba(43, 147, 163, .14);--glow-blue: rgba(58, 111, 196, .14);--glow-violet: rgba(106, 99, 192, .1);--grid-line: rgba(18, 34, 66, .04);--color-text: #16202f;--color-text-soft: #45536b;--color-text-dim: #78859b;--color-on-primary: #ffffff;--color-danger: #d84a4a;--color-danger-bg: rgba(216, 74, 74, .08);--color-danger-line: rgba(216, 74, 74, .28);--skeleton-base: rgba(18, 34, 66, .06);--skeleton-shine: rgba(18, 34, 66, .12);--font-sans: "Source Han Sans SC", "Noto Sans SC", "思源黑体", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;--fs-title: clamp(1.8rem, 1.4rem + 1.9vw, 3rem);--fs-subtitle: clamp(1.18rem, 1rem + .7vw, 1.4rem);--fs-body: clamp(.95rem, .9rem + .22vw, 1.06rem);--fs-caption: .8rem;--lh-tight: 1.12;--lh-snug: 1.3;--lh-base: 1.55;--ls-title: -.02em;--ls-wide: .02em;--text-xs: var(--fs-caption);--text-sm: .9rem;--text-base: var(--fs-body);--text-lg: var(--fs-subtitle);--text-xl: var(--fs-title);--text-hero: clamp(2.85rem, 1.4rem + 6.6vw, 7rem);--text-display: clamp(2.2rem, 1.6rem + 3vw, 4rem);--space-section: clamp(1.7rem, 1.1rem + 2.4vw, 3.6rem);--container: 100%;--gutter: clamp(1rem, .6rem + 1.6vw, 2rem);--radius-sm: 8px;--radius: 10px;--radius-lg: 14px;--radius-pill: 999px;--shadow-1: 0 2px 10px -6px rgba(30, 50, 90, .16);--shadow-2: 0 14px 36px -24px rgba(30, 50, 90, .22);--shadow-3: 0 26px 62px -36px rgba(30, 50, 90, .26);--shadow-soft: var(--shadow-2);--shadow-glow: 0 0 0 1px rgba(58, 111, 196, .12), 0 22px 54px -40px rgba(58, 111, 196, .4);--dur-fast: .16s;--dur: .3s;--dur-slow: .56s;--ease-out: cubic-bezier(.16, 1, .3, 1);--ease-in-out: cubic-bezier(.65, 0, .35, 1);color-scheme:light}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}body{margin:0;font-family:var(--font-sans);font-size:var(--fs-body);line-height:var(--lh-base);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;transition:background var(--dur) var(--ease-out),color var(--dur) var(--ease-out)}body:before{content:"";position:fixed;inset:0;z-index:-2;background:radial-gradient(60% 48% at 12% -5%,var(--glow-cyan),transparent 60%),radial-gradient(58% 48% at 92% 4%,var(--glow-blue),transparent 60%),radial-gradient(52% 42% at 50% 108%,var(--glow-blue),transparent 65%);pointer-events:none;transition:opacity var(--dur) var(--ease-out)}body:after{content:"";position:fixed;inset:0;z-index:-3;background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(ellipse 80% 60% at 50% 20%,#000 40%,transparent 100%);-webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 20%,#000 40%,transparent 100%);pointer-events:none}h1,h2,h3,h4{margin:0;font-weight:700;line-height:var(--lh-tight);letter-spacing:var(--ls-title)}p{margin:0}a{color:inherit;text-decoration:none;transition:color var(--dur-fast) var(--ease-out)}img,svg{display:block;max-width:100%}ul{margin:0;padding:0;list-style:none}button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px;border-radius:4px}::selection{background:#4c82d652;color:#fff}.container{width:100%;max-width:var(--container);margin-inline:0;padding-inline:var(--gutter)}.section{position:relative;padding-block:var(--space-section)}.gradient-text{background:var(--grad-text);background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shimmer 6s linear infinite}@keyframes shimmer{to{background-position:200% center}}@media (prefers-reduced-motion: reduce){.gradient-text{animation:none}}.eyebrow{display:inline-flex;align-items:center;gap:.6rem;font-size:var(--fs-caption);font-weight:600;letter-spacing:.3em;text-transform:uppercase;color:var(--color-primary)}.eyebrow:before{content:"";width:36px;height:1px;background:var(--grad-brand)}.section-title{font-size:var(--fs-title);font-weight:800;line-height:var(--lh-tight);letter-spacing:var(--ls-title);margin-top:.55rem;max-width:24ch}.section-lead{margin-top:.65rem;max-width:62ch;color:var(--color-text-soft);font-size:var(--fs-subtitle);line-height:var(--lh-snug)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:44px;padding:.6rem 1.25rem;border-radius:var(--radius);font-weight:600;font-size:var(--fs-body);line-height:1.2;transition:transform var(--dur-fast) var(--ease-out),box-shadow var(--dur) var(--ease-out),background var(--dur) var(--ease-out),border-color var(--dur) var(--ease-out),color var(--dur) var(--ease-out);will-change:transform}.btn-primary{color:var(--color-on-primary);background:var(--grad-brand);box-shadow:var(--shadow-1)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}.btn-primary:active{transform:translateY(0) scale(.98);box-shadow:var(--shadow-1)}.btn-secondary,.btn-ghost{color:var(--color-text);border:1px solid var(--color-line-strong);background:var(--surface-card-weak)}.btn-secondary:hover,.btn-ghost:hover{transform:translateY(-2px);border-color:var(--color-line-accent);background:var(--surface-card-hover)}.btn-secondary:active,.btn-ghost:active{transform:translateY(0) scale(.98)}.btn-text{min-height:44px;padding:.5rem .75rem;color:var(--color-primary);background:transparent}.btn-text:hover{background:var(--surface-card-weak)}.btn-text:active{transform:scale(.98)}.glass{background:var(--glass-bg);border:1px solid var(--color-line);border-radius:var(--radius);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur)}.reveal{opacity:0;transform:translateY(26px);transition:opacity var(--dur-slow) var(--ease-out),transform var(--dur-slow) var(--ease-out);transition-delay:var(--reveal-delay, 0ms)}.reveal.is-visible{opacity:1;transform:none}.skeleton{position:relative;overflow:hidden;background:var(--skeleton-base);border-radius:var(--radius)}.skeleton:after{content:"";position:absolute;inset:0;transform:translate(-100%);background:linear-gradient(90deg,transparent,var(--skeleton-shine),transparent);animation:skeleton-shine 1.3s var(--ease-in-out) infinite}@keyframes skeleton-shine{to{transform:translate(100%)}}.spinner{width:34px;height:34px;border-radius:50%;border:3px solid var(--color-line-strong);border-top-color:var(--color-primary);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion: reduce){.skeleton:after,.spinner{animation:none}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}