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var(--surface-1);--_ink-shadow:var(--_ink-shadow-light);--_icon-size:var(--size-relative-7);--_icon-color:var(--_accent,var(--link));-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;align-items:center;background:var(--_bg);border:var(--border-size-2) solid var(--_border);border-radius:var(--radius-2);box-shadow:var(--shadow-2),0 1px var(--surface-3),0 0 0 var(--_highlight-size) var(--_highlight);color:var(--_text);display:inline-flex;font-size:var(--_size);font-weight:var(--font-weight-7);gap:var(--size-2);justify-content:center;padding-block:.75ch;padding-inline:var(--size-relative-6);text-align:center;text-shadow:var(--_ink-shadow);transition:border-color .5s var(--ease-3);user-select:none}:where(input[type=file])::-webkit-file-upload-button,:where(input[type=file])::file-selector-button{--_accent:initial;--_text:initial;--_size:initial;--_bg-light:#fff;--_bg-dark:var(--surface-3);--_bg:var(--_bg-light);--_border:var(--surface-3);--_highlight-size:0;--_highlight-light:hsl(var(--gray-5-hsl)/25%);--_highlight-dark:hsl(var(--gray-12-hsl)/25%);--_highlight:var(--_highlight-light);--_ink-shadow-light:0 1px 0 var(--gray-3);--_ink-shadow-dark:0 1px 0 var(--surface-1);--_ink-shadow:var(--_ink-shadow-light);--_icon-size:var(--size-relative-7);--_icon-color:var(--_accent,var(--link));-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;align-items:center;background:var(--_bg);border:var(--border-size-2) solid var(--_border);border-radius:var(--radius-2);box-shadow:var(--shadow-2),0 1px var(--surface-3),0 0 0 var(--_highlight-size) var(--_highlight);color:var(--_text);display:inline-flex;font-size:var(--_size);font-weight:var(--font-weight-7);gap:var(--size-2);justify-content:center;padding-block:.75ch;padding-inline:var(--size-relative-6);text-align:center;text-shadow:var(--_ink-shadow);transition:border-color .5s var(--ease-3);user-select:none}@media(prefers-color-scheme:dark){:where(button,input[type=button],.btn){--_highlight:var(--_highlight-dark);--_bg:var(--_bg-dark);--_ink-shadow:var(--_ink-shadow-dark)}:where(button,input[type=submit],.btn){--_highlight:var(--_highlight-dark);--_bg:var(--_bg-dark);--_ink-shadow:var(--_ink-shadow-dark)}:where(button,input[type=reset],.btn){--_highlight:var(--_highlight-dark);--_bg:var(--_bg-dark);--_ink-shadow:var(--_ink-shadow-dark)}:where(input[type=file])::-webkit-file-upload-button,:where(input[type=file])::file-selector-button{--_highlight:var(--_highlight-dark);--_bg:var(--_bg-dark);--_ink-shadow:var(--_ink-shadow-dark)}}@media(prefers-reduced-motion:no-preference){:where(button,input[type=button],.btn){transition:border-color .5s var(--ease-3),box-shadow 145ms var(--ease-4),outline-offset 145ms var(--ease-4)}:where(button,input[type=submit],.btn){transition:border-color .5s var(--ease-3),box-shadow 145ms var(--ease-4),outline-offset 145ms var(--ease-4)}:where(button,input[type=reset],.btn){transition:border-color .5s var(--ease-3),box-shadow 145ms var(--ease-4),outline-offset 145ms var(--ease-4)}:where(input[type=file])::-webkit-file-upload-button,:where(input[type=file])::file-selector-button{transition:border-color .5s var(--ease-3),box-shadow 145ms var(--ease-4),outline-offset 145ms var(--ease-4)}}[disabled]:where(button,input[type=button],.btn){--_bg:none;--_text:var(--gray-6);box-shadow:var(--shadow-1);cursor:not-allowed}[disabled]:where(button,input[type=submit],.btn){--_bg:none;--_text:var(--gray-6);box-shadow:var(--shadow-1);cursor:not-allowed}[disabled]:where(button,input[type=reset],.btn){--_bg:none;--_text:var(--gray-6);box-shadow:var(--shadow-1);cursor:not-allowed}@media(prefers-color-scheme:dark){[disabled]:where(button,input[type=button],.btn){--_text:var(--gray-5)}[disabled]:where(button,input[type=submit],.btn){--_text:var(--gray-5)}[disabled]:where(button,input[type=reset],.btn){--_text:var(--gray-5)}}:where(button,input[type=button],.btn):where(:not(:active):hover){--_highlight-size:var(--size-2);transition-duration:.25s}:where(button,input[type=submit],.btn):where(:not(:active):hover){--_highlight-size:var(--size-2);transition-duration:.25s}:where(button,input[type=reset],.btn):where(:not(:active):hover){--_highlight-size:var(--size-2);transition-duration:.25s}:where(button,input[type=button],.btn)>:where(svg){block-size:var(--_icon-size);filter:drop-shadow(var(--_ink-shadow));flex-shrink:0;inline-size:var(--_icon-size)}:where(button,input[type=submit],.btn)>:where(svg){block-size:var(--_icon-size);filter:drop-shadow(var(--_ink-shadow));flex-shrink:0;inline-size:var(--_icon-size)}:where(button,input[type=reset],.btn)>:where(svg){block-size:var(--_icon-size);filter:drop-shadow(var(--_ink-shadow));flex-shrink:0;inline-size:var(--_icon-size)}:where(button,input[type=button],.btn)>:where(svg>*){stroke:var(--_icon-color);stroke-width:var(--border-size-2)}:where(button,input[type=submit],.btn)>:where(svg>*){stroke:var(--_icon-color);stroke-width:var(--border-size-2)}:where(button,input[type=reset],.btn)>:where(svg>*){stroke:var(--_icon-color);stroke-width:var(--border-size-2)}:where(a.btn){-webkit-text-decoration:none;text-decoration:none}:where([type=submit],form button:not([type],[disabled])){--_text:var(--_accent,var(--link))}:where([type=reset]){--_text:var(--red-6);--_border:var(--red-3)}:where([type=reset]):focus-visible{outline-color:var(--red-6)}@media(prefers-color-scheme:dark){:where([type=reset]){--_text:var(--red-2);--_border:var(--surface-3)}}:where(form button:not([type]),[type=submit],[type=reset]):hover:not([disabled]){--_border:currentColor}:where(form button:not([type]),[type=submit],[type=reset]):focus-visible:not([disabled]){--_border:currentColor}:where(input[type=file]){align-self:flex-start;border:var(--border-size-1) solid var(--surface-2);border-radius:var(--radius-2);box-shadow:var(--inner-shadow-4);color:var(--text-2);cursor:auto;max-inline-size:100%;padding:0}:where(input[type=file])::-webkit-file-upload-button,:where(input[type=file])::file-selector-button{cursor:pointer;margin-inline-end:var(--size-relative-6)}@media(prefers-color-scheme:dark){:where([disabled]),:where([type=reset]),:where([type=submit]),:where(form button:not([type=button])){--_bg:var(--surface-1)}}:where(html){--animation-fade-in:fade-in .5s var(--ease-3);--animation-fade-in-bloom:fade-in-bloom 2s var(--ease-3);--animation-fade-out:fade-out .5s var(--ease-3);--animation-fade-out-bloom:fade-out-bloom 2s var(--ease-3);--animation-scale-up:scale-up .5s var(--ease-3);--animation-scale-down:scale-down .5s var(--ease-3);--animation-slide-out-up:slide-out-up .5s var(--ease-3);--animation-slide-out-down:slide-out-down .5s var(--ease-3);--animation-slide-out-right:slide-out-right .5s var(--ease-3);--animation-slide-out-left:slide-out-left .5s var(--ease-3);--animation-slide-in-up:slide-in-up .5s var(--ease-3);--animation-slide-in-down:slide-in-down .5s var(--ease-3);--animation-slide-in-right:slide-in-right .5s var(--ease-3);--animation-slide-in-left:slide-in-left .5s var(--ease-3);--animation-shake-x:shake-x .75s var(--ease-out-5);--animation-shake-y:shake-y .75s var(--ease-out-5);--animation-shake-z:shake-z 1s 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slide-out-left{to{transform:translate(-100%)}}@keyframes slide-in-up{0%{transform:translateY(100%)}}@keyframes slide-in-down{0%{transform:translateY(-100%)}}@keyframes slide-in-right{0%{transform:translate(-100%)}}@keyframes slide-in-left{0%{transform:translate(100%)}}@keyframes shake-x{0%,to{transform:translate(0)}20%{transform:translate(-5%)}40%{transform:translate(5%)}60%{transform:translate(-5%)}80%{transform:translate(5%)}}@keyframes shake-y{0%,to{transform:translateY(0)}20%{transform:translateY(-5%)}40%{transform:translateY(5%)}60%{transform:translateY(-5%)}80%{transform:translateY(5%)}}@keyframes shake-z{0%,to{transform:rotate(0)}20%{transform:rotate(-2deg)}40%{transform:rotate(2deg)}60%{transform:rotate(-2deg)}80%{transform:rotate(2deg)}}@keyframes spin{to{transform:rotate(1turn)}}@keyframes ping{90%,to{opacity:0;transform:scale(2)}}@keyframes blink{0%,to{opacity:1}50%{opacity:.5}}@keyframes float{50%{transform:translateY(-25%)}}@keyframes 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calc(100vw - 40px) );--hai-font: Inter, "Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;font-size:15px}body{margin:0;min-width:320px;color:var(--hai-ink);background:#fbfdff;font-family:var(--hai-font);font-size:1rem;line-height:1.7;letter-spacing:0}body.menu-open{overflow:hidden}img,svg{max-width:100%}a{color:inherit;text-decoration:none}p{color:var(--hai-ink-soft);line-height:1.8}button,input,select,textarea{font:inherit}.container{width:var(--hai-container);margin-inline:auto}.section{padding:clamp(56px,6.5vw,92px) 0}.section-tight{padding:clamp(36px,5vw,68px) 0}.section-dark{color:#fff;background:linear-gradient(135deg,#08162af0,#0c2d4bf2),radial-gradient(circle at 75% 15%,rgb(32 198 215 / 20%),transparent 38%)}.section-dark p,.section-dark .eyebrow,.section-dark .muted{color:#ebf7fcc7}.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 12px;color:var(--hai-blue);font-size:.85rem;font-weight:600;letter-spacing:0}.eyebrow:before{content:"";width:28px;height:2px;background:linear-gradient(90deg,var(--hai-cyan),var(--hai-green))}.section-heading{max-width:760px;margin-bottom:30px}.section-heading h2,.page-title h1{margin:0;color:var(--hai-ink);font-size:clamp(1.35rem,1.9vw,1.55rem);line-height:1.3;font-weight:700;letter-spacing:0}.page-title h1{font-size:clamp(1.6rem,2.6vw,1.95rem);line-height:1.3}.section-heading p,.page-title p{margin:14px 0 0;font-size:.95rem}.section-dark .section-heading h2,.section-dark .page-title h1{color:#fff}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:0 18px;border:1px solid transparent;border-radius:var(--hai-radius);color:var(--hai-ink);background:#fff;font-size:.95rem;font-weight:600;line-height:1;transition:transform .18s ease,border-color .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease}.btn:hover,.btn:focus-visible{transform:translateY(-1px);box-shadow:var(--hai-shadow-soft)}.btn-primary{color:#fff;background:linear-gradient(135deg,var(--hai-blue),#0b7695)}.btn-secondary{border-color:#ffffff47;color:#fff;background:#ffffff1a}.btn-light{border-color:var(--hai-line);background:#fff}.tag-list{display:flex;flex-wrap:wrap;gap:10px;padding:0;margin:0;list-style:none}.tag-list li,.tag{display:inline-flex;align-items:center;min-height:30px;padding:0 10px;border:1px solid rgb(255 255 255 / 18%);border-radius:999px;color:#ebf7fcdb;background:#ffffff14;font-size:.86rem}.light-tags li,.light-tags .tag{border-color:var(--hai-line);color:var(--hai-ink-soft);background:#fff}.chip{display:inline-flex;align-items:center;gap:10px;min-height:58px;padding:0 16px;border:1px solid var(--hai-line);border-radius:8px;background:#fff;color:var(--hai-ink);font-size:.92rem;font-weight:600;box-shadow:0 1px 1px #09172c08;transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease,background .16s ease}.chip:before{content:"";flex:none;width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--hai-cyan),var(--hai-green));box-shadow:0 0 0 4px #20c6d71f}.chip:hover,.chip:focus-visible{transform:translateY(-2px);border-color:#20c6d773;background:#f9fdfe;box-shadow:var(--hai-shadow-soft)}.chip-pill{min-height:38px;padding:0 14px;border-radius:999px;font-weight:500;color:var(--hai-ink-soft)}.chip-pill:before{width:6px;height:6px;box-shadow:none}.grid{display:grid;gap:18px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{position:relative;overflow:hidden;border:1px solid var(--hai-line);border-radius:var(--hai-radius);background:var(--hai-panel);box-shadow:0 1px 1px #09172c08;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}.card:hover{transform:translateY(-3px);border-color:#20c6d775;box-shadow:var(--hai-shadow-soft)}.card-pad{padding:22px}.card h3{margin:0;color:var(--hai-ink);font-size:1.05rem;line-height:1.4;font-weight:700;letter-spacing:0}.card p{margin:10px 0 0;font-size:.95rem}.icon-box{display:inline-grid;place-items:center;width:42px;height:42px;margin-bottom:18px;border-radius:var(--hai-radius);color:var(--hai-cyan);background:linear-gradient(135deg,#e8f8fb,#f5fff9)}.icon-box svg{width:24px;height:24px}.link-arrow{display:inline-flex;align-items:center;gap:8px;margin-top:18px;color:var(--hai-blue);font-size:.92rem;font-weight:600}.link-arrow svg{width:17px;transition:transform .16s ease}.card:hover .link-arrow svg,.link-arrow:hover svg{transform:translate(3px)}.page-hero{padding:124px 0 68px;color:#fff;background:linear-gradient(110deg,#071224f2,#0f2d4ceb),linear-gradient(135deg,#102847,#08162a)}.page-hero .page-title{max-width:820px}.page-hero h1{color:#fff}.page-hero p{color:#ebf7fccc}.content-slab{border-block:1px solid var(--hai-line);background:linear-gradient(180deg,#fff,#f5f9fd)}.stats-band{position:relative;overflow:hidden}.stats-band:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 82% 18%,rgb(32 198 215 / 12%),transparent 28%),radial-gradient(circle at 12% 84%,rgb(47 172 102 / 10%),transparent 30%),linear-gradient(180deg,#ffffffb8,#f5f9fdf5);pointer-events:none}.stats-layout{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.88fr);gap:18px}.stats-copy,.stats-visual,.metric-row{position:relative;z-index:1}.stats-copy{padding:6px 2px 8px}.stats-copy h2{margin:0;font-size:clamp(1.55rem,2.6vw,2.2rem);line-height:1.18;color:var(--hai-ink)}.stats-copy p{max-width:54ch;margin-top:16px;font-size:clamp(.98rem,1.2vw,1.08rem)}.stats-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.stats-pills span{display:inline-flex;align-items:center;gap:8px;min-height:38px;padding:0 14px;border:1px solid var(--hai-line);border-radius:999px;background:#ffffffd1;color:var(--hai-ink);font-size:.92rem;font-weight:700;box-shadow:var(--hai-shadow-soft)}.stats-pills svg{width:18px;height:18px}.stats-visual{position:relative;overflow:hidden;min-height:240px;border:1px solid var(--hai-line);border-radius:var(--hai-radius-lg);background:#09172c;box-shadow:var(--hai-shadow)}.stats-visual img{display:block;width:100%;height:100%;min-height:240px;object-fit:cover;filter:saturate(1.05) contrast(1.02);transform:scale(1.04)}.stats-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgb(7 18 36 / 64%),transparent 52%),linear-gradient(180deg,transparent 42%,rgb(7 18 36 / 54%) 100%)}.stats-overlay{position:absolute;right:18px;bottom:16px;z-index:1;display:grid;gap:6px;max-width:280px;padding:14px 16px;border:1px solid rgb(143 234 241 / 24%);border-radius:10px;background:#071224a8;color:#fff;backdrop-filter:blur(16px)}.stats-overlay span{color:#8feaf1d6;font-size:.82rem;font-weight:700}.stats-overlay strong{font-size:1rem;line-height:1.5;font-weight:700}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.82fr);gap:clamp(28px,5vw,64px);align-items:start}.list-check{display:grid;gap:12px;padding:0;margin:18px 0 0;list-style:none}.list-check li{position:relative;padding-left:28px;color:var(--hai-ink-soft);line-height:1.7}.list-check li:before{content:"";position:absolute;top:.65em;left:0;width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--hai-cyan),var(--hai-green));box-shadow:0 0 0 4px #20c6d71f}.metric-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;overflow:hidden;border:1px solid var(--hai-line);border-radius:var(--hai-radius);background:var(--hai-line)}.metric{padding:22px;background:#fff}.metric{position:relative;overflow:hidden}.metric:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,#20c6d700,#20c6d70f);opacity:0;transition:opacity .18s ease}.metric:hover:before{opacity:1}.metric strong{display:block;color:var(--hai-blue);font-size:clamp(1.5rem,2.4vw,1.9rem);line-height:1;font-weight:700}.metric>span:last-child{display:block;margin-top:8px;color:var(--hai-ink-soft);font-size:.9rem}.reveal{opacity:0;transform:translateY(18px);transition:opacity .52s ease,transform .52s ease}.reveal.is-visible{opacity:1;transform:translateY(0)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.001ms!important}.reveal{opacity:1;transform:none}}@media(max-width:980px){.grid-4,.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}.split,.stats-layout{grid-template-columns:1fr}.metric-row{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:680px){:root{--hai-container: min(100vw - 28px, 1180px)}.section{padding:48px 0}.grid-2,.grid-3,.grid-4,.metric-row{grid-template-columns:1fr}.stats-visual img,.stats-visual{min-height:200px}.page-hero{padding:108px 0 56px}.card-pad,.metric{padding:20px}}