:root{--dt-ink:#1d3947;--dt-muted:#526d7c;--dt-line:#d9e4e8;--dt-green:#0e806c;--dt-gold:#e7ad60}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body.dtu-page{background:#fff;color:var(--dt-ink)}
.dtu-page main{max-width:none;width:100%;padding:0;margin:0}
.dtu-page a{overflow-wrap:anywhere}
.dtu-wrap{max-width:1160px;width:calc(100% - 48px);margin:0 auto}
.dtu-page h1,.dtu-page h2,.dtu-page h3{line-height:1.16;letter-spacing:-.03em}
.dtu-page .dtu-kicker{margin:0 0 14px;font-size:12px;letter-spacing:.13em;text-transform:uppercase;font-weight:800;color:#266375}
.dtu-hero{background:radial-gradient(circle at 80% 18%,rgba(86,175,171,.22),transparent 30%),linear-gradient(135deg,#102532,#193e50);color:#f8fbfa;padding:30px 0 0}
.dtu-hero .dtu-kicker,.dtu-callout .dtu-kicker{color:#f0c78d}
.dtu-breadcrumb{font-size:13px;color:#b8d4d9;margin:0 0 40px}
.dtu-breadcrumb a{color:#effbff;text-decoration:none;border-bottom:1px solid #a7d0db}
.dtu-hero-grid{display:grid;grid-template-columns:1.42fr .8fr;gap:48px;align-items:center;padding:8px 0 55px}
.dtu-hero h1{margin:0 0 24px;font-size:clamp(40px,5.7vw,72px);line-height:1.08;color:#fff;letter-spacing:-.05em}
.dtu-hero h1 span{color:#efd0a4}
.dtu-intro{font-size:20px;line-height:1.65;color:#f2f9fa;max-width:740px}
.dtu-zh{color:var(--dt-muted);font-size:15px;line-height:1.77}
.dtu-hero .dtu-zh{color:#d3e4e7}
.dtu-hero .dtu-big{font-size:16px;line-height:1.9;max-width:735px}
.dtu-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin:26px 0 0}
.dtu-button{display:inline-flex;padding:12px 17px;min-height:47px;border-radius:8px;align-items:center;justify-content:center;text-decoration:none!important;font-weight:750;font-size:14px;border:1px solid transparent;transition:transform .15s}
.dtu-button:hover{transform:translateY(-2px)}
.dtu-primary{background:#f0ca8d!important;color:#173448!important}
.dtu-outline{color:#f6fbfd!important;border-color:#8aadb9;background:rgba(255,255,255,.08)}
.dtu-hero-aside{background:rgba(255,255,255,.07);border:1px solid rgba(231,245,244,.24);padding:30px;border-radius:14px;box-shadow:0 22px 45px rgba(7,22,30,.16)}
.dtu-label{display:block;font-size:11px;letter-spacing:.1em;text-transform:uppercase;font-weight:800;color:#167f73}
.dtu-hero-aside .dtu-label{color:#f0c78d}
.dtu-hero-aside>strong{display:block;color:#fff;font-size:72px;letter-spacing:-.05em;line-height:1;margin:21px 0 8px}
.dtu-hero-aside>p{color:#e2eff0;line-height:1.68}
.dtu-stat-mini{display:grid;grid-template-columns:1fr 1fr;margin:22px 0;border-top:1px solid #6d8a8e;border-bottom:1px solid #6d8a8e}
.dtu-stat-mini>div{padding:17px 0;display:grid;gap:3px}
.dtu-stat-mini b{font-size:29px;color:#f3cf96}
.dtu-stat-mini small{font-weight:700;letter-spacing:.1em;color:#d4e7e9}
.dtu-hero-aside .dtu-hero-note{color:#d3e6e6;font-size:13px}
.dtu-herometa{display:flex;justify-content:space-between;gap:13px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.18);padding:15px 0 20px;color:#acc9d0;font-size:12px}
.dtu-section{padding:82px 0}
.dtu-section h2{font-size:clamp(30px,3.7vw,45px);margin:0 0 26px;max-width:1000px;color:#1c4151}
.dtu-dual{display:grid;grid-template-columns:1fr 1fr;gap:36px}
.dtu-dual p{font-size:16px;line-height:1.85;color:#536d7e;margin:0}
.dtu-flow{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:29px}
.dtu-flow span{padding:10px 12px;font-size:13px;font-weight:750;border:1px solid #cbdce1;border-radius:7px;background:#f6f9fa}
.dtu-flow i{font-style:normal;color:#b68a45;font-weight:850}
.dtu-footnote,.dtu-quiet{font-size:14px;line-height:1.7;color:#587282;margin-top:20px}
.dtu-soft{background:#f3f7f7}
.dtu-sectionintro{max-width:870px;line-height:1.8;color:#54707c;margin:0 0 30px}
.dtu-timeline{list-style:none;margin:34px 0 0 82px;padding:0;border-left:2px solid #b9d0d2}
.dtu-timeline>li{position:relative;padding:17px 20px 25px 28px;margin-bottom:10px}
.dtu-timeline>li:before{content:"";position:absolute;top:25px;left:-9px;background:#2a9a8c;width:15px;height:15px;border-radius:50%;border:3px solid #f3f7f7}
.dtu-timeline time{position:absolute;top:19px;left:-112px;font-size:11px;width:100px;text-align:right;font-weight:800;color:#317681}
.dtu-timeline h3{font-size:21px;margin:8px 0 12px;color:#224557}
.dtu-timeline p{margin:0 0 8px;max-width:950px;line-height:1.77;color:#536b7c;font-size:15px}
.dtu-timeline li:nth-child(4),.dtu-timeline li:nth-child(5){background:#fff;border:1px solid #cfe1df;border-radius:10px}
.dtu-grid{display:grid;gap:18px}
.dtu-grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.dtu-grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.dtu-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.dtu-card,.dtu-step,.dtu-peer{border:1px solid var(--dt-line);background:#fff;border-radius:11px;padding:24px;min-width:0}
.dtu-card p,.dtu-step p{line-height:1.78;font-size:15px;color:#527080;margin:12px 0 0}
.dtu-card h3{margin:4px 0 10px;font-size:20px}
.dtu-step{border-top:3px solid #70a99b}
.dtu-step-n{display:grid;place-items:center;background:#e1f3ee;border-radius:50%;width:36px;height:36px;color:#12745f;font-weight:900;font-size:16px}
.dtu-step h3{font-size:18px;color:#244b59;margin:17px 0}
.dtu-dark{background:linear-gradient(140deg,#173746,#0e2e3e);color:#f7fbfc}
.dtu-dark .dtu-kicker{color:#f0c88e}
.dtu-dark h2{color:#fff}
.dtu-dark em{color:#f0c88e;font-style:normal}
.dtu-evidence-card{border:1px solid rgba(255,255,255,.23);background:rgba(255,255,255,.05);padding:28px;border-radius:10px}
.dtu-evidence-card h3{color:#fff;font-size:22px;margin:12px 0}
.dtu-evidence-card p,.dtu-evidence-card li{line-height:1.75;color:#e1ecef;font-size:15px}
.dtu-evidence-card ul{padding-left:20px}
.dtu-evidence-card .dtu-label{color:#f0c88e}
.dtu-evidence-card .dtu-zh{color:#cbdfe1}
.dtu-peer{text-decoration:none!important;display:grid;gap:12px;color:#32596c;transition:transform .15s}
.dtu-peer:hover{transform:translateY(-2px)}
.dtu-peer b{font-size:15px;color:#214859}
.dtu-peer span{font-size:13px;color:#54707d;line-height:1.6}
.dtu-selected{border:2px solid #3d9a89;background:#f2faf7}
.dtu-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.dtu-links a{display:inline-flex;border:1px solid #aacac8;background:#fff;border-radius:7px;padding:12px 16px;font-weight:700;text-decoration:none;color:#246276;font-size:14px}
.dtu-callout{background:#1b3d4a;color:#ecf5f6}
.dtu-callout h2{color:#fff}
.dtu-callout>div>p:not(.dtu-kicker){max-width:940px;line-height:1.76;color:#deebeb;font-size:17px}
.dtu-callout .dtu-fine{font-size:13px!important;color:#bdd1d4!important;margin-top:24px}
.dtu-document{padding:23px;margin-top:52px;border:1px solid #cbdcdc;border-radius:11px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.dtu-document h2{margin:0 0 7px;font-size:23px}
.dtu-document .dtu-actions{margin:0}
.dtu-document button{cursor:pointer;padding:12px 15px;border:1px solid #adc9d0;background:#fff;color:#225b6b;font-size:13px;font-weight:750;border-radius:8px}
.dtu-document a{color:#167e76;font-weight:750;overflow-wrap:anywhere}
#dtu-copy-result{color:#087963;font-size:13px}
.dtu-boundary{background:#f3f6f7;border-left:3px solid #6c9c9b;padding:20px 24px;font-size:13px;line-height:1.7;color:#57707d;margin-top:42px;margin-bottom:69px}
.dtu-boundary b{color:#225563}
.dtu-boundary p{margin:9px 0 0}
.dtu-page footer{display:flex;flex-wrap:wrap;justify-content:space-between;gap:15px;padding:23px max(24px,calc((100vw - 1160px)/2));font-size:12px;line-height:1.55}
.dtu-page :is(a,button):focus-visible{outline:3px solid #dda755;outline-offset:3px}
@media(max-width:900px){.dtu-hero-grid{grid-template-columns:1fr}.dtu-hero-aside{max-width:600px}.dtu-grid-4{grid-template-columns:1fr 1fr}.dtu-grid-3{grid-template-columns:1fr 1fr}.dtu-dual{grid-template-columns:1fr}.dtu-document{align-items:flex-start;flex-direction:column}}
@media(max-width:620px){.dtu-wrap{width:calc(100% - 32px)}.dtu-hero-grid{gap:16px}.dtu-breadcrumb{margin-bottom:15px}.dtu-hero h1{font-size:clamp(36px,10.2vw,52px)}.dtu-section{padding:57px 0}.dtu-hero-aside{padding:22px}.dtu-timeline{margin-left:59px}.dtu-timeline>li{padding:15px 6px 17px 20px}.dtu-timeline time{left:-88px;width:79px;font-size:10px}.dtu-timeline h3{font-size:19px}.dtu-grid-2,.dtu-grid-3,.dtu-grid-4{grid-template-columns:1fr}.dtu-document{margin-top:32px}.dtu-page footer{padding:20px 16px}}
@media print{.dtu-hero,.dtu-dark,.dtu-callout{background:#fff!important;color:#111!important}.dtu-hero *,.dtu-dark *,.dtu-callout *{color:#111!important}.dtu-page .top nav,.dtu-actions{display:none!important}.dtu-section{padding:25px 0}.dtu-grid{display:block}.dtu-card,.dtu-step,.dtu-evidence-card,.dtu-timeline li{break-inside:avoid;margin-bottom:12px}.dtu-hero-grid{display:block}.dtu-page footer{border-top:1px solid #bbb}}