:root{--paper:#f5fafb;--white:#fff;--ink:#203f4d;--muted:#526c77;--accent:#246c7c;--line:#ccdce0;--mint:#dcece7;--radius:16px;--page:1320px;--space:24px;--fast:200ms;--slow:650ms;font-family:"Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0}button,input,textarea,select{font:inherit}button,a,input,textarea{touch-action:manipulation}a{color:inherit;text-decoration:none}button{color:inherit;cursor:pointer}button:disabled{cursor:wait;opacity:.6}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:5px}button{background:none;border:0}p{line-height:1.9}h1,h2,h3,p{margin-top:0}svg{vertical-align:middle}.header{position:absolute;top:0;left:0;z-index:10;width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:29px 4%;border-bottom:1px solid #ffffff45}.brand{display:flex;gap:12px;align-items:center;font-size:17px;font-weight:600;white-space:nowrap}.brand-mark{font-size:37px;font-weight:400}.brand small{display:block;font-size:9px;letter-spacing:2.1px;margin-top:5px}.header nav{display:flex;gap:25px;font-size:14px}.header nav a{padding:10px 0;position:relative}.header nav a[aria-current=page]:after{content:"";height:2px;position:absolute;bottom:1px;left:0;right:0;background:currentColor}.header nav a:hover{color:var(--accent)}.header-tools{display:flex;gap:8px}.icon-button{width:44px;height:44px;display:inline-grid;place-items:center;border-radius:50%;font-size:24px}.icon-button:hover{background:#ffffff60}.menu{display:none}.hero{min-height:740px;height:100svh;max-height:1200px;position:relative;background-image:linear-gradient(90deg,#edfbff75,transparent 60%),url('/assets/world.jpg');background-size:cover;background-position:center;overflow:hidden}.hero-copy{position:absolute;top:29%;left:max(7%,calc((100vw - 1320px)/2));animation:arrive 1s ease both}.eyebrow{font-size:12px;letter-spacing:3px;font-weight:500;margin-bottom:30px}.hero h1{font-family:"STSong","SimSun",serif;font-weight:400;letter-spacing:8px;font-size:clamp(56px,5.4vw,86px);line-height:1.4;margin-bottom:24px}.title-dot{color:var(--accent)}.hero-description{font-size:16px;letter-spacing:3px;line-height:2;margin-bottom:28px}.enter{display:inline-flex;align-items:center;gap:58px;border-bottom:1px solid var(--ink);padding:10px 0;font-size:15px}.enter span{font-size:24px}.hero-bottom{position:absolute;bottom:30px;left:4%;right:4%;display:flex;justify-content:space-between;font-size:12px;letter-spacing:2px}.hero-bottom a{font-size:13px}.page-home footer{background:var(--paper)}footer{max-width:var(--page);margin:auto;padding:36px 30px;display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}.skip{position:fixed;top:-100px;z-index:100;background:white;padding:14px}.skip:focus{top:10px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}dialog{border:1px solid var(--line);border-radius:var(--radius);padding:28px;background:var(--paper);color:var(--ink);width:min(660px,calc(100% - 32px));max-height:80svh}dialog::backdrop{background:#17384580;backdrop-filter:blur(5px)}.dialog-head{display:flex;justify-content:space-between;align-items:center;font-size:20px;margin-bottom:20px}input,textarea,select{border:1px solid var(--line);background:var(--white);color:var(--ink);border-radius:8px;padding:14px;width:100%}textarea{resize:vertical;min-height:150px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);z-index:30;padding:12px 22px;background:var(--ink);color:white;border-radius:8px;display:none;max-width:90vw}#toast.visible{display:block}@keyframes arrive{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:1700px){.hero{background-position:center 56%}}@media(max-width:1180px){.header{padding:20px 3%;gap:12px}.header nav{gap:14px}.brand{font-size:15px}.brand small{font-size:8px}.hero-copy{left:7%}}@media(max-width:960px){.menu{display:inline-grid}.header nav{display:none;position:absolute;top:85px;left:16px;right:16px;padding:20px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);grid-template-columns:1fr 1fr;gap:10px}.header nav.open{display:grid}.header nav a{padding:12px}.hero{min-height:700px}.hero-copy{top:28%}.hero h1{font-size:64px}.hero-bottom span:first-child{display:none}}@media(max-width:600px){.header{padding:18px 20px}.brand{font-size:15px}.brand-mark{font-size:30px}.hero{min-height:740px;max-height:950px;background-position:57% center;background-image:linear-gradient(90deg,#edfaffaa,transparent 100%),url('/assets/world.jpg')}.hero-copy{top:23%;left:7%}.eyebrow{font-size:10px;letter-spacing:2px;max-width:220px;line-height:2}.hero h1{font-size:55px;letter-spacing:5px}.hero-description{font-size:14px;letter-spacing:2px}.hero-bottom{bottom:25px;left:7%;right:7%;font-size:10px;letter-spacing:1px}.hero-bottom a{font-size:12px}footer{flex-wrap:wrap;padding:28px 24px;font-size:12px}footer span:nth-child(2){display:none}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}body.reduce-motion{scroll-behavior:auto}body.reduce-motion *{animation:none!important;transition:none!important}