@charset "UTF-8";
/* 夜航 · 晴空：全站基础样式。页头/页脚/子页面首屏为夜空，正文区为晨光，首页各段按「深夜 → 晴空」换天色。
   字体由 fonts.css 提供；这里只写字体族名和回退栈。 */
:root{
  --c1:#060B1A;--c2:#121838;--c3:#28424F;--c4:#E9F0F4;--c5:#CFE7F9;--c6:#9FCFF2;--c7:#0E1A2A;
  --f-display:"Fraunces","Noto Serif SC","Source Han Serif SC","Noto Serif CJK SC","Songti SC","STSong","SimSun",Georgia,serif;
  --f-cjk:"Noto Serif SC","Source Han Serif SC","Noto Serif CJK SC","Songti SC","STSong","SimSun",serif;
  --f-body:"IBM Plex Sans","PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;
  --gut:clamp(16px,4.5vw,50px);
  --bg:#E9F0F4;--tx:#13233A;--ac:#1F6860;--acf:#1F6860;--onacf:#fff;--hi:#7A5A10;--card:#F7FAFC;--band:#DDE9F0;--prev:#E9F0F4;
}
/* 天色令牌：每段预设；派生色在每个令牌作用域内重新计算 */
:root,.stage,.subhero,.article-top,.footer,.header{
  --mu:color-mix(in srgb,var(--tx) 72%,var(--bg));
  --ln:color-mix(in srgb,var(--tx) 20%,var(--bg));
  --card2:color-mix(in srgb,var(--tx) 11%,var(--bg));
}
.stage{background:var(--bg);color:var(--tx);position:relative;--card:color-mix(in srgb,var(--tx) 6%,var(--bg))}
.s1{--bg:#060B1A;--tx:#E9EFF7;--ac:#7FD6C6;--acf:#7FD6C6;--onacf:#04101A;--hi:#D8BC6C}
.s2{--bg:#121838;--tx:#E8EAF7;--ac:#A5E0D3;--acf:#8FD6C8;--onacf:#08142A;--hi:#D8BC6C}
.s3{--bg:#28424F;--tx:#F0F5F6;--ac:#B7E6DA;--acf:#9EDCCB;--onacf:#0B1D24;--hi:#E6CD80}
.s4{--bg:#E9F0F4;--tx:#13233A;--ac:#1F6860;--acf:#1F6860;--onacf:#FFFFFF;--hi:#7A5A10;--card:#F7FAFC}
.s5{--bg:#CFE7F9;--tx:#11223A;--ac:#1D5A6E;--acf:#1D5A6E;--onacf:#FFFFFF;--hi:#7A4E0A;--card:#EAF4FC}
.s5.sky-deep{--bg:#9FCFF2;--card:#DCEEFB}
.s6{--bg:#0E1A2A;--tx:#E6EDF3;--ac:#8FD6C8;--acf:#8FD6C8;--onacf:#08142A;--hi:#E6CD80}
.prev-1{--prev:#060B1A}.prev-2{--prev:#121838}.prev-3{--prev:#28424F}.prev-4{--prev:#E9F0F4}.prev-5{--prev:#CFE7F9}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;background:var(--c1)}
body{margin:0;background:var(--c4);color:var(--tx);font-family:var(--f-body);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:clip}
body[data-page="home"]{background:var(--c1)}
[id]{scroll-margin-top:92px}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button,a{touch-action:manipulation}
button{cursor:pointer;color:inherit}
img,svg,canvas{max-width:100%}
img{display:block;width:100%;height:auto}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:700;line-height:1.3;margin:0 0 .5em;letter-spacing:0;text-wrap:balance}
html[lang^="zh"] h1,html[lang^="zh"] h2,html[lang^="zh"] h3,html[lang^="zh"] h4{font-family:var(--f-cjk)}
h2{font-size:clamp(28px,3.6vw,44px)}
h3{font-size:22px}
p{margin:0 0 1em;color:var(--mu)}
ul,ol{margin:0}
:focus-visible{outline:3px solid var(--ac);outline-offset:3px}
.header :focus-visible,.footer :focus-visible,.subhero :focus-visible,.article-top :focus-visible{outline-color:#7FD6C6}
[hidden]{display:none!important}
.hidden{display:none!important}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.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}
.container{position:relative;width:min(1220px,100% - 2 * var(--gut));margin-inline:auto}
.skip{position:absolute;left:-9999px;top:8px;z-index:100;background:#D8BC6C;color:#060B1A;padding:10px 16px;font-weight:600}
.skip:focus{left:16px}

/* ===== 页头（夜空） ===== */
.header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,#060B1A 92%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(233,239,247,.14);color:#E9EFF7;--bg:#060B1A;--tx:#E9EFF7;--ac:#7FD6C6;--acf:#7FD6C6;--onacf:#04101A}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;color:#fff;min-width:0}
.brand svg{width:38px;height:38px;flex:none}
.brand strong{font-family:var(--f-display);font-size:19px;letter-spacing:.06em;display:block;line-height:1.2}
html[lang^="zh"] .brand strong{font-family:var(--f-cjk)}
.brand small{display:block;font:400 10px/1.3 var(--f-mono);letter-spacing:.2em;margin-top:3px;color:rgba(233,239,247,.66)}
.nav-links{display:flex;align-items:center;gap:6px;font-size:14.5px}
.nav-links>a:not(.button){position:relative;padding:10px 10px;color:#E9EFF7;border-bottom:2px solid transparent;white-space:nowrap;transition:color .2s,border-color .2s}
.nav-links>a:not(.button):hover{color:#7FD6C6;border-bottom-color:#7FD6C6}
.nav-links>a.active{color:#7FD6C6;border-bottom-color:#7FD6C6}
.lang{background:transparent;border:1px solid rgba(233,239,247,.3);color:#E9EFF7;font:500 13px/1 var(--f-mono);letter-spacing:.08em;padding:11px 12px;border-radius:2px;min-height:40px;margin:0 4px}
.lang:hover{border-color:#7FD6C6;color:#7FD6C6}
.menu-toggle{display:none;background:transparent;border:1px solid rgba(233,239,247,.3);color:#E9EFF7;padding:9px 13px;border-radius:2px;min-height:42px;font-size:14px}
.nav-links .button{margin-left:6px;min-height:42px;padding:9px 18px;font-size:14px}
html[lang="en"] .nav-links{gap:2px;font-size:13.5px}
@media(max-width:1060px){
  .menu-toggle{display:block}
  .nav-links{display:none;position:absolute;left:0;right:0;top:100%;background:#060B1A;border-bottom:1px solid rgba(233,239,247,.18);padding:14px var(--gut) 22px;flex-direction:column;align-items:stretch;gap:2px;box-shadow:0 18px 30px -18px rgba(0,0,0,.8)}
  .nav-links.open{display:flex}
  .nav-links>a:not(.button){padding:13px 4px;border-bottom:1px solid rgba(233,239,247,.1)}
  .lang{margin:12px 0 6px;align-self:flex-start}
  .nav-links .button{margin:10px 0 0}
}
@media(max-width:420px){.brand small{display:none}}

/* ===== 按钮与链接 ===== */
.button{display:inline-flex;justify-content:center;align-items:center;gap:12px;min-height:48px;padding:11px 22px;background:var(--acf);color:var(--onacf);border:1px solid var(--acf);border-radius:2px;font:600 15px/1.3 var(--f-body);transition:background .2s,color .2s,border-color .2s,transform .18s ease;text-align:center}
.button:hover{background:color-mix(in srgb,var(--acf) 82%,#fff);border-color:color-mix(in srgb,var(--acf) 82%,#fff)}
.button.secondary{background:transparent;color:var(--tx);border-color:color-mix(in srgb,var(--tx) 50%,transparent)}
.button.secondary:hover{background:color-mix(in srgb,var(--tx) 10%,transparent);border-color:var(--tx)}
.button.light{background:#fff;color:#13233A;border-color:#fff}
.button.ink{background:#16202E;color:#F3EEE0;border-color:#16202E}
.button.ink:hover{background:#14524C;border-color:#14524C}
.button.line{background:transparent;color:var(--tx);border-color:var(--tx)}
.button.line:hover{background:var(--tx);color:var(--bg)}
.button.sm{min-height:38px;padding:7px 14px;font-size:13.5px}
.arrow{font-size:17px;line-height:1}
.actions{display:flex;gap:16px 20px;align-items:center;flex-wrap:wrap}
.text-link{display:inline-flex;align-items:center;gap:10px;border-bottom:1px solid var(--ac);color:var(--ac);padding:6px 0;font-size:14.5px;font-weight:500}
.text-link:hover{color:var(--tx)}
a.lk{color:var(--ac);background:linear-gradient(currentColor,currentColor) 0 100%/0 1.5px no-repeat,linear-gradient(color-mix(in srgb,currentColor 38%,transparent),color-mix(in srgb,currentColor 38%,transparent)) 0 100%/100% 1px no-repeat;padding-bottom:2px;transition:background-size .38s ease;overflow-wrap:anywhere}
a.lk:hover{background-size:100% 1.5px,100% 1px}
.eyebrow{display:flex;align-items:center;gap:12px;font:500 12px/1.4 var(--f-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--ac);margin:0 0 18px}
.eyebrow::before{content:"";width:28px;height:1px;background:currentColor;flex:none}
.eyebrow .idx{color:var(--hi)}
.fine-print{font-size:13px!important;color:var(--mu);margin-top:22px}

/* ===== 子页面首屏（夜空带，纯 CSS 星点；底部过渡到晨光） ===== */
.subhero,.article-top{position:relative;overflow:clip;color:#E9EFF7;--bg:#060B1A;--tx:#E9EFF7;--ac:#7FD6C6;--hi:#D8BC6C;padding:clamp(34px,5vw,60px) 0 clamp(88px,10vw,128px);
  background:
   radial-gradient(1.4px 1.4px at 8% 24%,rgba(255,255,255,.85) 50%,transparent 52%),
   radial-gradient(1px 1px at 17% 62%,rgba(255,255,255,.6) 50%,transparent 52%),
   radial-gradient(1.6px 1.6px at 29% 18%,rgba(255,255,255,.8) 50%,transparent 52%),
   radial-gradient(1px 1px at 38% 48%,rgba(255,255,255,.55) 50%,transparent 52%),
   radial-gradient(1.3px 1.3px at 51% 14%,rgba(255,255,255,.75) 50%,transparent 52%),
   radial-gradient(1px 1px at 58% 58%,rgba(255,255,255,.5) 50%,transparent 52%),
   radial-gradient(1.5px 1.5px at 67% 30%,rgba(255,255,255,.85) 50%,transparent 52%),
   radial-gradient(1px 1px at 74% 70%,rgba(255,255,255,.55) 50%,transparent 52%),
   radial-gradient(1.4px 1.4px at 83% 20%,rgba(255,255,255,.8) 50%,transparent 52%),
   radial-gradient(1px 1px at 91% 52%,rgba(255,255,255,.6) 50%,transparent 52%),
   radial-gradient(1.2px 1.2px at 96% 12%,rgba(255,255,255,.7) 50%,transparent 52%),
   radial-gradient(70% 90% at 82% 0%,rgba(127,214,198,.20),transparent 70%),
   radial-gradient(50% 70% at 12% 10%,rgba(80,130,220,.14),transparent 70%),
   linear-gradient(180deg,#060B1A 0%,#121838 62%,#28424F 100%)}
.subhero::after,.article-top::after{content:"";position:absolute;left:0;right:0;bottom:0;height:clamp(70px,9vw,110px);background:linear-gradient(180deg,rgba(233,240,244,0),#E9F0F4);pointer-events:none}
.subhero .container,.article-top .container{z-index:1}
.breadcrumb{font:400 12px/1.6 var(--f-mono);letter-spacing:.04em;color:rgba(233,239,247,.72);margin-bottom:28px;display:flex;flex-wrap:wrap;gap:6px 12px}
.breadcrumb a:hover{color:#7FD6C6;text-decoration:underline}
.subhero h1,.article-top h1{font-size:clamp(34px,4.6vw,58px);line-height:1.25;margin:0 0 20px;max-width:920px;color:#fff;font-weight:700}
.subhero p,.article-deck{max-width:740px;margin:0;font-size:clamp(16px,1.6vw,18px);color:rgba(233,239,247,.88)}
.subhero .eyebrow,.article-top .eyebrow{margin-bottom:16px}

/* ===== 通用版块（晨光） ===== */
.section{padding:clamp(52px,7vw,92px) 0;position:relative}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:28px 40px;margin-bottom:clamp(28px,4vw,46px);flex-wrap:wrap}
.section-head h2{margin:0}
.section-head p{max-width:380px;font-size:15px;margin:0 0 4px}
.section-head .eyebrow{margin-bottom:12px}

.service-list{border-top:1px solid var(--tx)}
.service-row{display:grid;grid-template-columns:56px minmax(180px,240px) minmax(0,1fr) 130px;align-items:center;gap:20px;padding:26px 10px;border-bottom:1px solid var(--ln);transition:background .2s,padding .2s}
.service-row:hover{background:var(--card);padding-left:20px;padding-right:20px}
.service-number{color:var(--hi);font:500 13px var(--f-mono);letter-spacing:.12em}
.service-row h3{margin:0;font-size:24px}
.service-row h3 small{display:block;font:500 10.5px var(--f-mono);text-transform:uppercase;letter-spacing:.14em;color:var(--mu);margin-top:6px}
.service-row p{font-size:14.5px;margin:0;max-width:440px}
.row-link{font:500 12.5px var(--f-mono);display:flex;justify-content:flex-end;align-items:center;gap:10px;color:var(--ac)}

.about-strip{background:var(--band)}
.about-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(30px,6vw,84px);align-items:center}
.about-mark{padding:46px 30px;position:relative;text-align:center;background:#0E1A2A;color:#E6EDF3;border-radius:6px;border-top:3px solid #D8BC6C;box-shadow:0 36px 70px -44px rgba(14,26,42,.8)}
.about-mark::before{content:"";position:absolute;inset:12px;border:1px solid rgba(230,237,243,.16);pointer-events:none;border-radius:3px}
.monogram{font:italic 300 90px/1.2 var(--f-display);color:#D8BC6C;letter-spacing:-.04em}
.about-mark h3{font-size:28px;margin:18px 0 4px;color:#fff}
.about-mark .english-name{font:400 11px/1.6 var(--f-mono);letter-spacing:.16em;color:#B8C4D2}
.about-mark .licence{display:inline-block;margin-top:22px;font:500 13px var(--f-mono);letter-spacing:.06em;color:#8FD6C8;border-top:1px dashed rgba(230,237,243,.25);padding-top:18px}
.about-grid h2{font-size:clamp(27px,3.2vw,38px)}
.about-grid p{font-size:16px}

.process{background:var(--band)}
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.step{border-top:2px solid var(--tx);padding-top:22px}
.step-number{font:500 13px/1 var(--f-mono);letter-spacing:.14em;color:var(--hi);margin-bottom:16px}
.step h3{font-size:21px;margin-bottom:10px}
.step p{font-size:14.5px;margin:0}

.faq-layout{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(28px,6vw,80px);align-items:start}
.faq details{border-top:1px solid var(--ln)}
.faq details:last-child{border-bottom:1px solid var(--ln)}
.faq summary{cursor:pointer;list-style:none;padding:20px 40px 20px 0;font:600 17px/1.55 var(--f-body);position:relative;color:var(--tx)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:16px;font:400 26px/1 var(--f-mono);color:var(--ac)}
.faq details[open] summary::after{content:"\2212"}
.faq details p{font-size:15px;margin:0;padding:0 36px 22px 0;max-width:46em}

.cta{background:linear-gradient(180deg,#E9F0F4,#CFE7F9);color:#11223A;--tx:#11223A;--ac:#1D5A6E;--acf:#1D5A6E;--onacf:#fff}
.cta .container{display:flex;align-items:center;justify-content:space-between;gap:30px 40px;padding-block:clamp(40px,6vw,64px);flex-wrap:wrap}
.cta h2{font-size:clamp(26px,3vw,34px);margin:0 0 8px}
.cta p{margin:0;font-size:15px;color:#3A5068}

.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:clamp(30px,6vw,80px);align-items:start}
.content-grid h2{font-size:clamp(25px,2.6vw,31px)}
.detail-item{border-top:1px solid var(--ln);padding:26px 0 10px}
.detail-item h3{font-size:22px;margin-bottom:10px}
.detail-item p{font-size:15.5px}
.aside-box{background:var(--card);border:1px solid var(--ln);border-top:3px solid var(--hi);padding:28px;position:sticky;top:108px;box-shadow:0 24px 50px -36px rgba(19,35,58,.4)}
.aside-box h3{font-size:21px}
.aside-box p,.aside-box li{font-size:14px}
.aside-box ul{padding-left:20px;color:var(--mu);margin:0 0 24px}
.aside-box li{padding-bottom:10px}
.aside-box .button{width:100%}
.values{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px;margin-top:48px}
.value{border-top:2px solid var(--hi);padding-top:20px}
.value h3{font-size:21px}
.value p{font-size:15px}

.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(30px,6vw,80px);align-items:start}
.contact-method{padding:20px 0;border-bottom:1px solid var(--ln)}
.contact-method:first-child{border-top:1px solid var(--tx)}
.contact-method small{display:block;font:500 11.5px var(--f-mono);letter-spacing:.14em;color:var(--ac);text-transform:uppercase;margin-bottom:4px}
.contact-method>a,.contact-method>strong{font:500 clamp(19px,2.2vw,24px)/1.4 var(--f-mono);overflow-wrap:anywhere;color:var(--tx)}
.contact-method>a:hover{color:var(--ac)}
.contact-method p{font-size:13px;margin:8px 0 0}
.copy{border:1px solid var(--ln);background:transparent;padding:6px 14px;font:500 12.5px var(--f-mono);margin-left:12px;color:var(--tx);border-radius:2px;min-height:34px}
.copy:hover{border-color:var(--ac);color:var(--ac)}
.contact-panel{padding:clamp(24px,3.4vw,38px);background:var(--card);border:1px solid var(--ln);border-top:3px solid var(--hi)}
.contact-panel h2{font-size:clamp(23px,2.4vw,28px)}
.contact-panel ol{padding-left:22px;color:var(--mu);font-size:15px}
.contact-panel li{padding:0 0 14px 8px}
.notice{border-left:3px solid var(--hi);padding:2px 0 2px 18px;margin:28px 0 0;font-size:14px}
.legal{max-width:800px}
.legal h2{font-size:26px;margin-top:40px}
.legal h2:first-child{margin-top:0}
.legal p{font-size:15.5px}
.legal a.text-link{margin-top:4px}
.ee-entry{background:var(--band)}

/* ===== 页脚（着陆） ===== */
.footer{--fh:clamp(70px,9vw,110px);position:relative;overflow:clip;background:var(--c7);color:#B8C4D2;padding:calc(var(--fh) + 36px) 0 22px;--bg:#0E1A2A;--tx:#E6EDF3;--ac:#8FD6C8;--prev:#E9F0F4}
main:has(>.cta:last-child)+.footer{--prev:#CFE7F9}
body[data-page="home"] .footer{--prev:#9FCFF2}
.footer::before{content:"";position:absolute;left:0;right:0;top:0;height:var(--fh);background:linear-gradient(180deg,var(--prev),#0E1A2A);pointer-events:none}
.footer::after{content:"";position:absolute;left:0;right:0;top:calc(var(--fh) - 18px);height:1px;background:repeating-linear-gradient(90deg,#E6CD80 0 18px,transparent 18px 36px);opacity:.5;pointer-events:none}
.footer .container{z-index:1}
.footer .brand{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.5fr .9fr 1.2fr;gap:clamp(28px,5vw,60px);padding-bottom:36px}
.footer p{font-size:13.5px;color:#B8C4D2;margin-top:18px;max-width:360px}
.footer h3{font:500 11px/1.4 var(--f-mono);letter-spacing:.18em;text-transform:uppercase;color:#8FD6C8;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:8px;font-size:14px}
.footer-links a,.footer-links span{color:#C9D3DF}
.footer-links a:hover{color:#8FD6C8;text-decoration:underline}
.footer-bottom{border-top:1px solid rgba(230,237,243,.18);padding-top:20px;font:400 12px/1.7 var(--f-mono);letter-spacing:.04em;color:#9FB0C2;display:flex;justify-content:space-between;gap:12px 25px;flex-wrap:wrap}
.footer-bottom a{text-decoration:underline;text-underline-offset:3px}
.footer-bottom a:hover{color:#8FD6C8}

/* ===== 响应式 ===== */
@media(max-width:1000px){
  .service-row{grid-template-columns:44px minmax(150px,200px) minmax(0,1fr)}
  .row-link{grid-column:3;justify-content:flex-start}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .about-grid,.faq-layout,.contact-grid{grid-template-columns:minmax(0,1fr)}
}
@media(max-width:860px){
  .content-grid{grid-template-columns:minmax(0,1fr)}
  .aside-box{position:static}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .footer-grid>div:first-child{grid-column:1/-1}
  .values{grid-template-columns:minmax(0,1fr);gap:22px}
}
@media(max-width:600px){
  .service-row{grid-template-columns:30px minmax(0,1fr);gap:4px 12px;padding:22px 0}
  .service-row:hover{padding-left:6px;padding-right:6px}
  .service-row p{grid-column:2;margin-top:8px}
  .row-link{grid-column:2}
  .steps{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .section-head{align-items:flex-start}
  .cta .container{flex-direction:column;align-items:flex-start}
  .monogram{font-size:72px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}