/* 蓝白马赛克 / 铬银 / 少量虹彩：共享品牌材质 */
:root{--ink:#173f68;--teal:#247eb0;--muted:#607a90;--red:#5468b5;--paper:#eff8ff;--white:#fbfdff;--line:#b4d2e5}
body{background-color:#f0f8fd;background-image:radial-gradient(ellipse at 90% 10%,#d6dcff80,transparent 45%),linear-gradient(#81b9dd15 1px,transparent 1px),linear-gradient(90deg,#81b9dd15 1px,transparent 1px);background-size:auto,32px 32px,32px 32px}
header{border-top-color:#7eb3d7;border-bottom:4px solid #8dbbd9;background-color:#f5fbff;box-shadow:0 2px #fff,0 5px #cad9e9}.draft-strip{background:#285c86;color:#e4f5ff}.wordmark b{text-shadow:none;color:#235276}.brand-seal{background:linear-gradient(135deg,#eafaff,#58a9d3 45%,#3569ac 70%,#dcd5ff);color:#fff;border:1px solid #a1c9e9;box-shadow:3px 3px #b0c8dd}
.hero h1{text-shadow:none;color:#204d77}.hero h1 em{color:#397eae}.hero .eyebrow{background:linear-gradient(100deg,#deeff8,#fbfdff 45%,#c9e7f8);color:#2a5a7c;border:2px solid #adcfe2;box-shadow:3px 3px #c2d5e7}.hero .eyebrow::before{background:#489fd0}.hero-footnote{background:#f5faff;border-left-color:#8d9bdb;color:#627e98}
.hero-image{transform:none;background:linear-gradient(120deg,#e6f5ff,#8bbbd5 28%,#f9fcff 45%,#acc7e6 70%,#dddcf8);border:3px solid #e7f5ff;box-shadow:0 0 0 1px #95bad6,7px 9px 0 #bbd0e355}.hero-image::before{background:linear-gradient(#f7fbff,#c1e3f5);border:2px solid #93bddd;color:#2a5f8a;box-shadow:3px 3px #a4bbd5}.image-label,.hero-image .image-label{color:#284f6d}.city-frame{border-color:#d6eafb;outline-color:#91b4ce}.scene-toggle{background:#edf8ff}.scene-toggle [aria-pressed=true]{background:#357ca9}.scene-toggle{box-shadow:2px 2px #93b8d4}
.btn{background:linear-gradient(#428fbe,#286b9b);border-color:#4887b3;box-shadow:3px 3px #b2c9df;color:#fff}.btn:hover{background:#2c74a7}.btn.secondary{background:linear-gradient(#fff,#e5f2fa);color:#2e6389;border-color:#9ebed5}.btn.secondary:hover{background:#e2f2ff}.text-link{border-color:#91b7d4}
.index-line{background:#f8fcff;border-color:#a5c8df;border-top-color:#73afd1;box-shadow:5px 5px #cedeea}.index-line .num{background:#478cbb}.section-head .eyebrow,.page-head .eyebrow{color:#4d83ac}.section-head h2::before{background:#61a9d2;box-shadow:5px 5px #d0c9ef}
.series-card,.experience{background:linear-gradient(125deg,#fff,#edf7fe);border-color:#b5d3e7;box-shadow:6px 6px #c8dce955}.series-card::before{background:linear-gradient(#e7f6ff,#afd5ec);color:#2d628d;transform:none;border:1px solid #a4c5dc}.series-art,.series-hero .poster{background:linear-gradient(135deg,#fff,#a1c1dc,#f5faff,#bec8ed);padding:9px;border:1px solid #94bbd8;box-shadow:5px 5px #cbdde9}
.wash{background-color:#d8edf9;background-image:linear-gradient(135deg,#ffffff99 0,transparent 28%,#6ba5cf33 68%,#ffffffaa 98%),linear-gradient(90deg,#effaffbb 2px,transparent 3px),linear-gradient(#effaffbb 2px,transparent 3px);background-size:64px 64px,64px 64px,64px 64px;border-block:4px solid #93beda;box-shadow:inset 0 3px #f0faff,inset 0 -3px #f0faff}
.topic-card{border-color:#eaf6ff;box-shadow:5px 6px #9bbbd0}.topic-card::before{background:repeating-linear-gradient(110deg,#79b2d8 0 14px,#f4faff 14px 28px)}.topic-card:hover{box-shadow:7px 12px #a4bfd5}.topic-body{background:#f8fcff}.topic-bottom{border-color:#afcbdc}.label,.label.plan{background:#edf4fd;color:#436d92;border-color:#b7cde3}
.resource-card{background:linear-gradient(140deg,#fff,#eef7ff);border-color:#aecce1;border-top-color:#7db4d9;box-shadow:4px 4px #c8dce955}.resource-card-head{align-items:flex-start}.resource-card-head img{width:86px;height:86px;flex-shrink:0;image-rendering:auto;border:2px solid #d7eaf8;padding:0;box-shadow:3px 3px #aac8df;background:#d4edff}.resource-card-head h3{font-size:21px}.resource-meta{border-color:#b0cadd}.resource-detail-head img{image-rendering:auto}.gallery-cover{border-color:#f9fcff;box-shadow:4px 5px #b7d0e1}.gallery-caption{background:#f6fbff}.mini-nav{background:#f6fbff;border-color:#b2cfe2}.sidebar-card{border-top-color:#75aed3;box-shadow:5px 5px #d0e2ee}
.support-banner{background:linear-gradient(120deg,#2c6596,#4689b2 70%,#7d83b6);border-color:#e7f3fc;box-shadow:6px 6px #c2d8e7}.support-banner p{color:#e0f0fb}footer{background:linear-gradient(120deg,#234e79,#347da1)!important;border-top:6px solid #b1cce3!important}footer .wordmark b{color:#f5fbff;text-shadow:none;line-height:1.5;letter-spacing:.08em}footer .wordmark small,footer .footer-bottom{color:#d8eaf7;text-shadow:none}footer::before{background:linear-gradient(#fff,#d8eaf7);border-color:#91b9d6;color:#356c95;box-shadow:4px 4px #153c6280}.design-notes{background:#eff8ff;border-color:#b1cce0;box-shadow:3px 3px #a7bfd5}
@media(max-width:700px){header nav.open{background:#f3f9ff}.resource-card-head img{width:78px;height:78px}.hero h1{font-size:37px}}