:root{color-scheme:dark;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#050505;color:#f7f7f7}
a{color:inherit;text-decoration:none}
button{font:inherit}
img{max-width:100%}
:is(a,button,video):focus-visible{outline:2px solid #fff;outline-offset:5px}
.case-skip{position:absolute;left:16px;top:-80px;z-index:100;padding:10px 14px;background:#fff;color:#050505}
.case-skip:focus{top:16px}
.case-header{max-width:1680px;margin:0 auto;height:76px;padding:0 clamp(24px,4.5vw,64px);display:flex;align-items:center;gap:48px}
.case-brand{font-size:19px;font-weight:700;letter-spacing:.08em;white-space:nowrap}
.case-header-nav{display:flex;gap:32px;align-items:center;font-size:14px;font-weight:600}
.case-header-nav a:hover,.case-footer a:hover,.case-breadcrumb a:hover,.case-toc a:hover{text-decoration:underline;text-underline-offset:5px}
.case-console{margin-left:auto;border:1px solid #e6e6e6;border-radius:999px;padding:12px 19px;white-space:nowrap;font-size:13px;font-weight:600;background:#fff;color:#050505}
.case-console:hover{background:#d6d6d6}
.case-main{max-width:1680px;margin:0 auto;padding:0 clamp(24px,4.5vw,64px)}
.case-list-intro{padding:clamp(74px,9vw,154px) 0 70px;max-width:920px}
.case-eyebrow{font-size:13px;letter-spacing:.11em;color:#a4a4a4;font-weight:600;margin:0 0 26px}
.case-list-intro h1{font-size:clamp(46px,6vw,78px);font-weight:500;letter-spacing:-.04em;line-height:1.15;margin:0 0 30px}
.case-intro-text{max-width:850px;font-size:clamp(17px,1.5vw,21px);line-height:1.7;margin:0;color:#ececec}
.case-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:clamp(38px,6vw,100px);row-gap:28px;padding:0 0 140px}
.case-card{display:grid;grid-template-columns:clamp(145px,13vw,215px) minmax(0,1fr);gap:clamp(20px,2vw,34px);align-items:center;min-height:215px}
.case-card-image{display:block;width:100%;aspect-ratio:1;object-fit:cover;border-radius:5px;background:#111}
.case-card-copy{min-width:0}
.case-card-category{font-size:14px;color:#a3a3a3;margin:0 0 14px}
.case-card h2{font-size:clamp(19px,1.55vw,24px);line-height:1.4;letter-spacing:-.02em;font-weight:600;margin:0 0 12px}
.case-card-summary{font-size:14px;line-height:1.65;color:#b7b7b7;margin:0}
.case-card-action{display:inline-block;font-size:13px;font-weight:600;margin-top:15px;text-decoration:underline;text-underline-offset:5px}
.case-card:hover .case-card-action{color:#fff}
.case-breadcrumb{font-size:13px;color:#999;padding:64px 0 0}
.case-breadcrumb span:last-child{color:#ddd}
.case-detail-hero{text-align:center;padding:clamp(55px,7vw,108px) 0 clamp(72px,8vw,130px)}
.case-detail-hero .case-eyebrow{margin-bottom:34px}
.case-detail-hero h1{font-size:clamp(42px,5.5vw,76px);font-weight:500;line-height:1.2;letter-spacing:-.045em;margin:0 auto 27px;max-width:1100px;text-wrap:balance}
.case-detail-lead{font-size:clamp(17px,1.5vw,20px);line-height:1.7;margin:0 auto;max-width:900px;color:#ececec}
.case-article-layout{display:grid;grid-template-columns:230px minmax(0,800px);justify-content:center;gap:clamp(44px,7vw,124px);padding:0 0 150px}
.case-toc{position:sticky;top:100px;align-self:start;display:flex;flex-direction:column;gap:14px;font-size:14px;color:#898989}
.case-toc-heading{font-size:12px;color:#e5e5e5;margin-bottom:15px}
.case-toc a{line-height:1.5}
.case-article{min-width:0}
.case-video-section{margin:0 0 80px}
.case-section-title{font-size:26px;line-height:1.35;font-weight:600;letter-spacing:-.025em;margin:0 0 26px}
.case-video-stage{position:relative;background:#101010;border-top:1px solid #252525;border-bottom:1px solid #252525}
.case-video-stage video,.case-video-poster{display:block;width:100%;aspect-ratio:16/9;object-fit:contain;background:#101010}
.case-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);cursor:pointer;border:1px solid #f5f5f5;border-radius:999px;background:#fff;color:#080808;padding:15px 23px;font-size:15px;font-weight:600;white-space:nowrap}
.case-play:hover{background:#ddd}
.case-caption{color:#979797;font-size:13px;margin:14px 0 0}
.case-text-section{padding-top:30px;margin:0 0 48px;border-top:1px solid #252525;scroll-margin-top:100px}
.case-text-section p,.case-next p{font-size:clamp(17px,1.5vw,20px);line-height:1.72;margin:0;color:#f1f1f1}
.case-images{padding-top:30px;border-top:1px solid #252525;margin:0 0 62px;scroll-margin-top:100px}
.case-images figure{margin:0 0 40px}
.case-images img{display:block;width:100%;height:auto;background:#111}
.case-images figcaption{color:#9d9d9d;font-size:13px;margin-top:12px}
.case-next{padding-top:30px;border-top:1px solid #252525}
.case-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.case-button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;border:1px solid #fff;border-radius:999px;background:#fff;color:#050505;padding:12px 20px;font-size:14px;font-weight:600}
.case-button.secondary{background:transparent;color:#fff}
.case-button:hover{background:#ddd;color:#050505}
.case-footer{border-top:1px solid #242424;max-width:1680px;margin:0 auto;padding:44px clamp(24px,4.5vw,64px) 60px;display:flex;justify-content:space-between;gap:30px;color:#a3a3a3;font-size:13px}
.case-footer p{margin:0}
.case-footer nav{display:flex;gap:25px;flex-wrap:wrap}
.case-not-found{padding:150px 0 80px;font-size:28px}
@media(max-width:1000px){.case-grid{grid-template-columns:1fr;max-width:760px}.case-article-layout{grid-template-columns:170px minmax(0,1fr);gap:36px}}
@media(max-width:700px){.case-header{height:68px;gap:20px}.case-brand{font-size:16px}.case-header-nav{gap:14px;font-size:12px}.case-header-nav a:nth-child(1),.case-header-nav a:nth-child(3){display:none}.case-console{font-size:12px;padding:10px 13px}.case-list-intro{padding:66px 0 48px}.case-grid{row-gap:26px;padding-bottom:80px}.case-card{grid-template-columns:104px minmax(0,1fr);gap:16px;min-height:112px;align-items:start}.case-card-image{height:104px}.case-card-category{font-size:11px;margin-bottom:5px}.case-card h2{font-size:17px;margin-bottom:6px}.case-card-summary{font-size:12px;line-height:1.55}.case-card-action{font-size:11px;margin-top:8px}.case-breadcrumb{padding-top:28px}.case-detail-hero{padding:70px 0 78px}.case-detail-hero .case-eyebrow{font-size:12px;margin-bottom:24px}.case-article-layout{display:block;padding-bottom:90px}.case-toc{position:static;display:flex;flex-direction:row;gap:18px;overflow-x:auto;white-space:nowrap;padding:0 0 22px;margin-bottom:42px;border-bottom:1px solid #282828}.case-toc-heading{display:none}.case-section-title{font-size:22px}.case-video-section{margin-bottom:60px}.case-play{font-size:13px;padding:12px 18px}.case-footer{display:block;padding-top:32px}.case-footer nav{margin-top:22px;gap:14px 22px}}