:root{--paper:#fcfbf8;--surface:#fff;--ink:#20201e;--muted:#777b79;--line:#e9e7e2;--soft:#f4f2ed;--red:#e60020;--tint:#fff0f1;font-family:'Microsoft YaHei','PingFang SC',system-ui,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;color-scheme:light}
*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{border:0;background:none;color:inherit;cursor:pointer}a{color:inherit;text-decoration:none}button:disabled{opacity:.35;cursor:default}[hidden]{display:none!important}svg{width:18px;height:18px;vertical-align:middle;flex:none}button:focus-visible,a:focus-visible{outline:2px solid var(--red);outline-offset:4px}img{max-width:100%}.initial-loading{min-height:60vh;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:13px;font-size:21px;letter-spacing:1px}.initial-loading span{font-size:13px;color:var(--muted)}
.site-shell{max-width:1120px;margin:auto;padding:0 26px}.site-header{height:100px;display:flex;align-items:center;gap:11px}.brand-mark{position:relative;overflow:hidden;width:43px;height:43px;border-radius:50%;flex:none;background:var(--red)}.brand-mark img{position:absolute;width:356.75%;max-width:none;left:-123.25%;top:-31.16%}.brand-title{font-size:19px;font-weight:600;letter-spacing:1px}.brand-en{font-size:11px;color:var(--muted);letter-spacing:1.8px;margin-top:3px}.header-brand{display:flex;align-items:center;gap:10px}.header-nav{display:flex;align-items:center;gap:25px;margin-left:auto;font-size:13px}.header-nav a.active{color:var(--red)}.header-nav button{color:var(--muted)}.header-back{display:flex;align-items:center;gap:3px;margin:0 0 16px;font-size:13px;min-height:36px;color:var(--muted)}
.hero{display:flex;position:relative;width:100%;text-align:left;border-radius:20px;overflow:hidden;isolation:isolate;background:radial-gradient(ellipse at 100% 20%,#be122b,#b50a2420 55%,transparent 78%),linear-gradient(130deg,#142129,#2b222c);color:white;aspect-ratio:16/9;max-height:500px}.hero:before{content:'AI';font-family:Arial,sans-serif;font-weight:700;font-size:clamp(110px,23vw,280px);letter-spacing:-.08em;position:absolute;right:9%;top:16%;color:#ffffff0c;z-index:-1}.hero.has-image{background-position:center;background-size:cover}.hero.has-image:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,#09191bc4,#00000005);z-index:-1}.hero-content{padding:6% 7%;display:flex;flex-direction:column;justify-content:center;align-items:flex-start}.hero-kicker{font-size:12px;letter-spacing:2px;color:#ffffffc9;margin-bottom:13px}.hero-title{white-space:pre-line;font-size:clamp(26px,4.2vw,48px);line-height:1.35;font-weight:600;letter-spacing:2px}.hero-cta{display:flex;align-items:center;gap:8px;font-size:13px;margin-top:23px}.hero-cta svg{width:16px;height:16px}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:32px 0 17px}.section-head h2{font-size:20px;font-weight:600;letter-spacing:.7px;margin:0}.section-head small{font-size:11px;letter-spacing:1.5px;color:var(--muted)}.section-head a{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:3px}.section-head a svg{width:14px;height:14px}.categories-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:13px}.category-button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:22px 4px;background:var(--surface);border:1px solid var(--line);border-radius:12px;min-height:113px;font-size:13px}.category-button:hover{border-color:var(--red);background:var(--tint)}.category-icon{width:34px;height:34px;display:flex;align-items:center;justify-content:center;color:var(--red)}.category-icon svg{width:29px;height:29px;stroke-width:1.5}.category-icon img{width:36px;height:36px;object-fit:cover;border-radius:8px}
.waterfall{display:grid;grid-template-columns:1fr 1fr;gap:17px;align-items:start}.water-column{display:flex;flex-direction:column;gap:17px}.work-card{display:block;width:100%;padding:0;text-align:left;border-radius:13px;background:var(--surface);border:1px solid var(--line);overflow:hidden}.cover{position:relative;width:100%;background:#292d33;overflow:hidden}.cover img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .25s}.work-card:hover .cover img{transform:scale(1.025)}.cover-play{position:absolute;right:11px;top:11px;display:flex;align-items:center;justify-content:center;width:29px;height:29px;border-radius:50%;background:#00000055;color:white}.cover-play svg{width:13px;height:13px;fill:white}.cover-time{position:absolute;right:9px;bottom:9px;padding:3px 6px;border-radius:4px;background:#00000075;color:white;font-size:11px}.work-copy{padding:14px 15px}.work-copy h3{font-size:16px;font-weight:500;margin:0;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.work-copy p{margin:7px 0 0;font-size:12px;color:var(--muted)}.end-copy{text-align:center;color:var(--muted);font-size:12px;margin:29px 0;letter-spacing:.5px}.empty-state{padding:55px 24px;text-align:center;border:1px dashed var(--line);border-radius:14px;color:var(--muted);margin:15px 0 25px}.empty-state svg{width:35px;height:35px;stroke-width:1.2}.empty-state h3{font-size:16px;color:var(--ink);font-weight:500;margin:13px 0 8px}.empty-state p{font-size:13px;line-height:1.8;margin:0}
.site-footer{display:flex;align-items:center;justify-content:space-between;gap:15px;border-top:1px solid var(--line);padding:24px 0 31px;font-size:13px}.footer-copy span{display:block;font-size:12px;color:var(--muted);margin-top:5px}.red-button{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--red);color:white;border-radius:9px;min-height:40px;padding:10px 17px;font-size:13px}.red-button svg{width:16px;height:16px}.copyright{text-align:center;font-size:11px;color:var(--muted);padding:0 0 23px;letter-spacing:.7px}
.page-heading{margin:7px 0 22px}.eyebrow{font-size:11px;letter-spacing:1.8px;color:var(--red);margin-bottom:9px}.page-heading h1{font-size:32px;letter-spacing:1px;margin:0 0 9px;font-weight:600}.page-heading p{font-size:13px;color:var(--muted);line-height:1.8;margin:0}.category-filters{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 21px}.category-filters button{font-size:12px;min-height:35px;padding:7px 12px;border-radius:7px;border:1px solid var(--line);background:white}.category-filters button[aria-pressed=true]{color:var(--red);border-color:var(--red);background:var(--tint)}.list-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin:0 0 15px}.list-page{max-width:820px;margin:auto}.about-page{max-width:800px;margin:auto}.about-logo{width:220px;display:block;margin:16px auto 30px;border-radius:8px}.about-title{font-size:32px;font-weight:600;letter-spacing:1px;line-height:1.6;white-space:pre-line;margin:0 0 17px}.about-text{font-size:15px;line-height:2.1;color:#656966;white-space:pre-wrap;overflow-wrap:anywhere}.about-images{display:flex;flex-direction:column;gap:15px;margin:25px 0}.about-images img{display:block;width:100%;height:auto;border-radius:12px}.service-row{border-top:1px solid var(--line);padding:17px 0;display:flex;align-items:center;gap:15px;font-size:14px}.service-row small{color:var(--red);font-size:11px}.service-row svg{margin-left:auto;color:var(--muted);width:16px;height:16px}
.contact-dialog{border:0;border-radius:20px;padding:28px;max-width:410px;width:calc(100% - 32px);color:var(--ink);background:white;box-shadow:0 20px 80px #00000024}.contact-dialog::backdrop{background:#00000065}.dialog-close{position:absolute;right:12px;top:12px;padding:9px}.contact-dialog h2{font-size:23px;margin:7px 0 12px;line-height:1.6;letter-spacing:1px}.contact-dialog p{font-size:13px;line-height:1.9;color:var(--muted)}.contact-option{display:flex;align-items:center;gap:10px;padding:15px 0;border-top:1px solid var(--line);font-size:14px;overflow-wrap:anywhere}.contact-option>svg{color:var(--red)}.contact-option button{margin-left:auto;font-size:12px;color:var(--red);min-height:32px;white-space:nowrap}.contact-qr{width:190px;display:block;margin:10px auto}.notice{position:fixed;bottom:calc(35px + env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);padding:12px 18px;border-radius:10px;background:#222e;color:white;z-index:100;font-size:13px;max-width:90vw;text-align:center}
.player-view{position:fixed;inset:0;background:#08090a;color:white;z-index:30;display:flex;flex-direction:column;overflow:hidden;touch-action:pan-x}.player-top{position:absolute;top:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;padding:calc(14px + env(safe-area-inset-top)) 18px 15px;background:linear-gradient(#0000009c,transparent);z-index:3}.player-back{display:flex;align-items:center;gap:4px;min-height:40px;font-size:14px;color:white}.player-count{font-size:12px;color:#ffffffb3}.player-media{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}.player-media video{width:100%;height:100%;object-fit:contain;background:#08090a}.player-video-hit{position:absolute;inset:62px 0 230px;z-index:2;display:flex;align-items:center;justify-content:center;color:white}.player-video-hit span{display:flex;align-items:center;justify-content:center;width:57px;height:57px;border-radius:50%;background:#00000045}.player-video-hit svg{width:24px;height:24px;fill:white}.player-video-hit.is-playing span{visibility:hidden}.player-info{position:absolute;bottom:0;left:0;right:0;padding:74px 20px calc(19px + env(safe-area-inset-bottom));background:linear-gradient(transparent,#000000e0 33%);z-index:3;pointer-events:none}.player-info button,.player-info input{pointer-events:auto}.player-tag{font-size:12px;color:#ffffffb8;border-left:3px solid var(--red);padding-left:7px;margin:0 0 9px}.player-info h1{font-size:22px;line-height:1.5;font-weight:500;letter-spacing:.5px;margin:0 0 7px;max-width:95%}.player-description{font-size:12px;line-height:1.8;color:#ffffffbe;margin:0 0 15px;white-space:pre-wrap;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;max-width:90%}.player-controls{display:flex;align-items:center;gap:8px}.player-controls>button{border:1px solid #ffffff38;border-radius:8px;padding:8px 10px;min-height:36px;color:white;display:flex;gap:4px;align-items:center;font-size:12px}.player-controls .player-contact{background:var(--red);border-color:var(--red);margin-left:auto}.player-controls svg{width:15px;height:15px}.player-seek{width:100%;accent-color:white;height:13px;margin:15px 0 3px;display:block}.player-timing{display:flex;justify-content:space-between;font-size:11px;color:#ffffffaa;align-items:center}.player-hint{font-size:11px;color:#ffffff9e}.player-loading{position:absolute;top:43%;left:50%;transform:translateX(-50%);padding:8px 12px;background:#0000005c;border-radius:6px;font-size:12px;pointer-events:none;z-index:4}.player-error{position:absolute;inset:25% 10% auto;text-align:center;z-index:4;background:#151719e8;padding:24px;border-radius:15px;font-size:14px;line-height:1.8}.player-error button{margin-top:12px}
@media(min-width:900px){.home-cases{max-width:820px;margin:auto}.player-media{inset:0;max-width:1100px;margin:auto}.player-info{max-width:1100px;margin:auto;padding-left:30px;padding-right:30px}.player-top{max-width:1100px;margin:auto}.player-video-hit{max-width:1100px;margin:auto}}
@media(max-width:600px){.site-shell{padding:0 16px}.site-header{height:87px}.brand-mark{width:36px;height:36px}.brand-title{font-size:17px}.brand-en{font-size:10px;letter-spacing:1.4px}.header-nav{gap:11px;font-size:12px}.header-nav .desktop-link{display:none}.hero{border-radius:15px}.hero-content{padding:22px}.hero-kicker{font-size:10px;letter-spacing:1.7px;margin-bottom:7px}.hero-title{font-size:25px;letter-spacing:1px}.hero-cta{font-size:11px;margin-top:13px}.section-head{margin:24px 0 14px}.section-head h2{font-size:16px}.section-head small{font-size:10px;letter-spacing:1px}.section-head a{font-size:12px}.categories-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.category-button{font-size:12px;min-height:88px;padding:15px 3px;gap:9px}.category-icon{width:28px;height:28px}.category-icon svg{width:25px;height:25px}.category-icon img{width:30px;height:30px}.waterfall,.water-column{gap:10px}.work-card{border-radius:11px}.work-copy{padding:10px}.work-copy h3{font-size:13px;line-height:1.6}.work-copy p{font-size:10px;margin-top:5px}.cover-play{width:24px;height:24px;top:8px;right:8px}.cover-time{font-size:10px;padding:2px 5px;right:7px;bottom:7px}.end-copy{font-size:11px;margin:23px 0}.site-footer{padding:19px 0 24px;font-size:12px}.footer-copy span{font-size:10px}.red-button{font-size:12px;min-height:38px;padding:9px 14px}.copyright{font-size:10px;padding-bottom:20px}.page-heading h1{font-size:27px}.page-heading p{font-size:12px}.category-filters{gap:6px;margin-bottom:17px}.category-filters button{font-size:11px;min-height:32px;padding:6px 9px}.about-title{font-size:25px}.about-text{font-size:13px}.about-logo{width:190px}.player-info h1{font-size:20px}.player-controls{gap:6px}.player-controls>button{padding:8px;font-size:11px}}
@media(pointer:coarse){.header-nav a,.header-nav button,.header-back,.category-filters button,.player-controls>button{min-height:44px;display:inline-flex;align-items:center}.player-seek{height:22px}.contact-option button{min-height:44px}}
@media(prefers-reduced-motion:reduce){.cover img{transition:none}}