@font-face{font-family:'Inter';font-style:normal;font-weight:100 900;font-display:swap;src:url(/fonts/inter.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:300 700;font-display:swap;src:url(/fonts/space-grotesk.woff2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;}
:root{--bg:#100f0e;--surface:#171513;--ink:#f2ede2;--muted:#968f84;--line:#3f3a32;--accent:#c9a878;--accent-ink:#1c1813;--soft:#d8d0c2;--dim:#6b655b;--sans:'Inter','Noto Sans SC','PingFang SC','HarmonyOS Sans SC','Microsoft YaHei',sans-serif;--display:'Space Grotesk','Inter','Noto Sans SC',sans-serif;--mono:'Space Grotesk','Inter','Noto Sans SC',sans-serif}*{box-sizing:border-box}html{background:var(--bg)}body{height:100%;margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.6;overflow:hidden}.shell{width:min(900px,calc(100% - 48px));margin:0 auto}.site-header{position:fixed;inset:0 0 auto;z-index:20;height:80px;background:#100f0ed9;border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.header-inner{height:100%;display:flex;align-items:center}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none}.brand img{width:36px;height:36px;object-fit:contain}.brand span{display:grid;line-height:1.2}.brand b{font-size:15px;font-weight:800}.brand small{font:12px var(--mono);letter-spacing:.07em;color:var(--muted);margin-top:3px}.primary-nav{display:flex;gap:29px;margin-left:auto;margin-right:32px}.primary-nav a{color:var(--muted);font-size:13px;text-decoration:none;transition:color .25s}.primary-nav a:hover,.primary-nav a.active{color:var(--ink)}.primary-nav a.active:after{content:'';display:inline-block;width:4px;height:4px;margin:0 0 2px 6px;border-radius:50%;background:var(--accent)}.header-side{display:flex;align-items:center;gap:16px}.page-count{min-width:45px;color:var(--muted);font:12px var(--mono);letter-spacing:.06em}.lang-select{appearance:none;-webkit-appearance:none;-moz-appearance:none;border:1px solid var(--line);background:transparent;color:var(--ink);padding:7px 30px 7px 11px;border-radius:3px;font-size:12px;cursor:pointer;transition:border-color .25s,color .25s;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23968f84' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;background-size:10px 6px}.lang-select:hover,.lang-select:focus{border-color:var(--accent);color:var(--accent);outline:none}.lang-select option{background:var(--surface);color:var(--ink)}.menu{display:none;border:0;background:none;padding:8px;color:var(--ink)}.menu i{display:block;width:20px;height:1px;background:currentColor;margin:5px}.page-rail{position:fixed;left:50%;bottom:28px;z-index:15;display:flex;flex-direction:row;gap:18px;transform:translateX(-50%)}.rail-item{display:flex;align-items:center;gap:6px;color:var(--muted);text-decoration:none;transition:color .25s}.rail-item span{font:11px var(--mono);opacity:.65}.rail-item i{order:-1;width:6px;height:6px;border:1px solid currentColor;border-radius:50%;transition:background .3s,transform .3s,box-shadow .3s}.rail-item b{font:12px var(--mono);font-weight:400;letter-spacing:.04em}.rail-item.active{color:var(--ink)}.rail-item.active i{background:var(--accent);border-color:var(--accent);transform:scale(1.4);box-shadow:0 0 0 5px #c9a8781f}#page-scroll{display:flex;flex-direction:column;width:100vw;height:100svh;overflow-x:hidden;overflow-y:auto;scroll-behavior:smooth;scroll-snap-type:y mandatory;overscroll-behavior-y:contain;-webkit-overflow-scrolling:touch}.screen{position:relative;flex:0 0 100svh;width:100vw;min-height:100svh;height:100svh;scroll-snap-align:start;scroll-snap-stop:always;overflow:hidden}.screen:before{content:'';position:absolute;inset:80px 0 0;pointer-events:none;opacity:.35;background:none}.screen-giant{position:absolute;right:max(3vw,30px);top:50%;z-index:0;font:800 clamp(160px,20vw,340px) / 1 var(--display);letter-spacing:-.04em;color:var(--ink);pointer-events:none;opacity:0;transform:translateY(-50%) translateX(50px)}.screen-inner{position:relative;z-index:1;min-height:100svh;display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:56px;align-items:center;padding:106px 0 55px}.screen-copy{max-width:420px}

/* 图文左右交替 + 方向变量（决定切换时图/字从哪一侧滑入） */
.screen-relay,.screen-keys{--text-x:40px;--art-x:-70px}.screen-mail{--text-x:-40px;--art-x:70px}
.screen-relay .screen-art,.screen-keys .screen-art,.screen-image .screen-art{order:1}
.screen-relay .screen-copy,.screen-keys .screen-copy,.screen-image .screen-copy{order:2}

.eyebrow{font:12px var(--mono);letter-spacing:.1em;color:var(--accent);margin:0 0 23px}.eyebrow:before{content:'';display:inline-block;width:18px;height:1px;background:currentColor;vertical-align:middle;margin:0 9px 3px 0}h1{font-family:var(--display);font-size:clamp(42px,5vw,58px);line-height:1.23;letter-spacing:-.035em;margin:0;font-weight:700}h1 em{font-style:normal;color:var(--accent)}.lead{max-width:390px;color:var(--muted);font-size:16px;line-height:1.9;margin:25px 0 31px}.button{display:inline-flex;align-items:center;gap:25px;padding:11px 16px;border-radius:3px;text-decoration:none;font-size:14px;transition:transform .25s,background .25s}.button:hover{transform:translateY(-2px)}.button b{font-size:16px;font-weight:400}.button.primary{background:var(--accent);color:var(--accent-ink)}.button.primary:hover{background:#d9bc8f}.screen-meta{display:flex;gap:20px;margin-top:48px;color:var(--dim);font:11px var(--mono);letter-spacing:.05em}.screen-art{position:relative;height:400px}.art-label{position:absolute;color:var(--dim);font:11px var(--mono);letter-spacing:.09em}.art-label-top{left:0;top:0}.art-label-bottom{right:0;bottom:0}.art-status{position:absolute;right:0;bottom:20px;color:var(--muted);font:11px var(--mono);letter-spacing:.06em}.art-status i{display:inline-block;width:5px;height:5px;margin:0 7px 1px 0;background:var(--accent);border-radius:50%;box-shadow:0 0 0 4px #c9a87821}.relay-lines{position:absolute;inset:25px 0 30px;width:100%;height:calc(100% - 55px)}.relay-lines path{fill:none;stroke:var(--line);stroke-width:1;stroke-dasharray:4 7}.relay-hub{position:absolute;left:50%;top:51%;width:70px;height:70px;transform:translate(-50%,-50%);display:grid;place-items:center;border:1px solid var(--accent);border-radius:50%;background:var(--bg);z-index:2}.relay-hub:after{content:'';position:absolute;inset:-10px;border:1px solid var(--accent);border-radius:50%;opacity:0;pointer-events:none}.relay-hub img{width:47px;height:47px;object-fit:contain}.model-node{position:absolute;display:flex;align-items:center;gap:7px;color:var(--muted);font:11px var(--mono);opacity:0}.model-node:before{content:'';width:8px;height:8px;border:1px solid var(--accent);border-radius:50%;background:var(--bg)}.node-app{left:3%;top:24%}.node-gpt{left:29%;top:8%}.node-claude{right:23%;top:11%}.node-gemini{right:2%;top:33%}.node-api{left:19%;bottom:17%}.node-flow{right:25%;bottom:15%}.mail-art{height:400px;position:relative}.mail-orbit{position:absolute;left:50%;top:50%;border:1px solid var(--line);border-radius:50%;transform:translate(-50%,-50%) rotate(-18deg)}.orbit-a{width:275px;height:175px}.orbit-b{width:350px;height:250px;transform:translate(-50%,-50%) rotate(27deg);border-color:var(--line)}.mail-card{position:absolute;border:1px solid var(--line);background:#161310ea;box-shadow:0 18px 50px #00000025}.mail-card small{display:block;color:var(--muted);font:11px var(--mono);letter-spacing:.08em}.mail-main{left:14%;top:16%;width:220px;height:220px;padding:19px;transform:rotate(-5deg)}.mail-main strong{display:block;margin-top:24px;color:var(--accent);font:48px var(--display)}.mail-main b{display:block;margin-top:-4px;font:700 22px var(--display);line-height:1.05;letter-spacing:.02em}.mail-main span{position:absolute;bottom:18px;left:19px;color:var(--dim);font:12px var(--mono)}.mail-code{right:7%;bottom:17%;width:225px;padding:18px 17px;transform:rotate(4deg)}.mail-code b{display:block;color:var(--ink);font:500 22px var(--mono);letter-spacing:.12em;margin:20px 0 15px}.mail-code span{color:var(--accent);font:11px var(--mono)}.screen-keys .screen-art{height:400px}.scan-core{position:absolute;left:50%;top:50%;width:330px;transform:translate(-50%,-50%);border:1px solid var(--line);background:#161310ea;box-shadow:0 18px 50px #00000025;padding:17px 18px 19px}.scan-head{display:flex;justify-content:space-between;padding-bottom:15px;border-bottom:1px solid var(--line);color:var(--accent);font:12px var(--mono);letter-spacing:.06em}.scan-head b{color:var(--muted);font-weight:400}.scan-row{display:grid;grid-template-columns:16px 1fr auto;align-items:center;gap:8px;padding:14px 0;border-bottom:1px solid #2a2621;color:var(--ink);font:12px var(--mono)}.scan-row i{width:7px;height:7px;border-radius:50%;border:1px solid currentColor}.scan-row i.ok{color:var(--accent);background:var(--accent)}.scan-row i.wait{color:var(--muted);animation:pulse 1.4s ease-in-out infinite}.scan-row b{color:var(--dim);font-weight:400;font-size:11px}.scan-progress{height:2px;background:#2a2722;margin-top:18px;overflow:hidden}.scan-progress i{display:block;width:61%;height:100%;background:var(--accent);animation:progress 2.2s ease-in-out infinite alternate}.key-signal{position:absolute;color:var(--accent);font:11px var(--mono);letter-spacing:.1em}.key-signal:before{content:'';display:inline-block;width:6px;height:6px;border:1px solid currentColor;border-radius:50%;margin-right:7px}.signal-left{left:9%;top:28%}.signal-right{right:5%;bottom:28%}.screen-footer{position:absolute;z-index:2;left:0;right:0;bottom:25px;display:flex;justify-content:space-between;color:var(--muted);font:12px var(--mono)}.screen-footer a{color:var(--muted);text-decoration:none}

/* ---- 横向接力切换动画：图从所在侧滑入，字从相反侧滑入 ---- */
.js .anim{opacity:0}
.js .screen.is-visible .eyebrow{animation:slide-text .7s cubic-bezier(.22,1,.36,1) forwards;animation-delay:.02s}
.js .screen.is-visible h1{animation:slide-text .7s cubic-bezier(.22,1,.36,1) forwards;animation-delay:.1s}
.js .screen.is-visible .lead{animation:slide-text .7s cubic-bezier(.22,1,.36,1) forwards;animation-delay:.19s}
.js .screen.is-visible .button{animation:slide-text .7s cubic-bezier(.22,1,.36,1) forwards;animation-delay:.28s}
.js .screen.is-visible .screen-meta{animation:slide-text .7s cubic-bezier(.22,1,.36,1) forwards;animation-delay:.37s}
.js .screen.is-visible .screen-art{animation:slide-art .9s cubic-bezier(.22,1,.36,1) forwards;animation-delay:.12s}
.js .screen.is-visible .screen-giant{animation:giant-in .95s cubic-bezier(.22,1,.36,1) forwards}
.js .screen-relay.is-visible .relay-hub:after{animation:ripple 1.05s cubic-bezier(.22,1,.36,1) .38s forwards}
.js .screen-relay.is-visible .relay-lines path{animation:draw-route 1.2s ease .05s forwards}
.js .screen-relay.is-visible .model-node{animation:node-in .6s ease forwards}
.js .screen-relay.is-visible .node-app{animation-delay:.3s}.js .screen-relay.is-visible .node-gpt{animation-delay:.38s}.js .screen-relay.is-visible .node-claude{animation-delay:.46s}.js .screen-relay.is-visible .node-gemini{animation-delay:.54s}.js .screen-relay.is-visible .node-api{animation-delay:.62s}.js .screen-relay.is-visible .node-flow{animation-delay:.7s}

@keyframes slide-text{from{opacity:0;transform:translateX(var(--text-x,-40px));filter:blur(8px)}to{opacity:1;transform:none;filter:blur(0)}}
@keyframes slide-art{from{opacity:0;transform:translateX(var(--art-x,70px)) scale(.97);filter:blur(10px)}to{opacity:1;transform:none;filter:blur(0)}}
@keyframes giant-in{from{opacity:0;transform:translateY(-50%) translateX(80px) scale(.92)}to{opacity:.045;transform:translateY(-50%) translateX(0) scale(1)}}
@keyframes ripple{0%{opacity:.65;transform:scale(.55)}100%{opacity:0;transform:scale(1.75)}}
@keyframes draw-route{from{stroke-dashoffset:190;opacity:0}to{stroke-dashoffset:0;opacity:1}}
@keyframes node-in{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
@keyframes pulse{50%{opacity:.35;transform:scale(.72)}}
@keyframes progress{from{transform:translateX(-15%);width:45%}to{transform:translateX(70%);width:58%}}

@media(max-width:760px){.shell{width:calc(100% - 40px)}.site-header{height:68px}.primary-nav{display:none;position:absolute;top:68px;left:20px;right:20px;margin:0;padding:8px 0;background:#171513f5;border:1px solid var(--line);flex-direction:column;gap:0}.primary-nav.open{display:flex}.primary-nav a{padding:11px 14px}.header-side{gap:10px}.page-count{display:none}.lang-select{padding:5px 26px 5px 9px;font-size:11px;background-position:right 8px center}.menu{display:block}.page-rail{bottom:20px;gap:12px}.rail-item{gap:5px}.rail-item b{font-size:7px}.rail-item span{font-size:8px}.screen:before{inset:68px 0 0;background:none}.screen-giant{right:6px;font-size:clamp(120px,34vw,220px)}.screen-inner{display:flex;flex-direction:column;align-items:stretch;justify-content:center;gap:16px;min-height:100svh;padding:92px 0 54px}.screen-copy,.screen-art{order:0!important}.screen-copy{max-width:none}.eyebrow{margin-bottom:17px}.screen-copy h1{font-size:40px}.lead{font-size:13px;line-height:1.75;margin:18px 0 23px;max-width:330px}.screen-meta{margin-top:27px;gap:13px;flex-wrap:wrap}.screen-art,.mail-art,.screen-keys .screen-art{height:265px;flex:none;margin-top:5px}.art-label-top{left:2px}.art-label-bottom{right:2px}.art-status{right:2px;bottom:16px;font-size:8px}.relay-lines{inset:18px 0 24px;height:calc(100% - 42px)}.relay-hub{width:58px;height:58px}.relay-hub img{width:39px;height:39px}.model-node{font-size:8px}.model-node:before{width:7px;height:7px}.node-app{left:0;top:22%}.node-gpt{left:26%;top:4%}.node-claude{right:21%;top:7%}.node-gemini{right:0;top:30%}.node-api{left:14%;bottom:14%}.node-flow{right:19%;bottom:12%}.mail-orbit{top:51%}.orbit-a{width:220px;height:140px}.orbit-b{width:280px;height:195px}.mail-main{left:8%;top:7%;width:165px;height:176px;padding:14px}.mail-main strong{margin-top:18px;font-size:40px}.mail-main b{font-size:18px}.mail-main span{left:14px;bottom:13px;font-size:7px}.mail-card small{font-size:7px}.mail-code{right:3%;bottom:5%;width:181px;padding:13px 12px}.mail-code b{font-size:17px;margin:14px 0 11px}.mail-code span{font-size:7px}.scan-core{width:min(310px,88%);padding:14px 14px 16px}.scan-row{padding:11px 0}.key-signal{font-size:8px}.signal-left{left:1%;top:18%}.signal-right{right:0;bottom:19%}.screen-footer{bottom:18px;font-size:8px}.screen-footer a{font-size:8px}}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}#page-scroll{scroll-behavior:auto}.js .anim{opacity:1;animation:none}.screen-giant{opacity:.045;transform:translateY(-50%)}.model-node{opacity:1}.relay-lines path{opacity:1;stroke-dashoffset:0}.relay-hub:after{display:none}.scan-progress i,.scan-row i.wait{animation:none}}

/* ---- 新增业务板块：视频工坊 / 生图工坊 ---- */
.screen-video{--text-x:-40px;--art-x:70px}
.screen-image{--text-x:40px;--art-x:-70px}
.video-core{position:absolute;left:50%;top:50%;width:340px;transform:translate(-50%,-50%);border:1px solid var(--line);background:#161310ea;box-shadow:0 18px 50px #00000025;padding:16px}
.video-screen{position:relative;aspect-ratio:16/9;border:1px solid #2a2621;background:linear-gradient(135deg,#1c1813,#0f0d0b);display:grid;place-items:center}
.video-play{width:46px;height:46px;border:1px solid var(--accent);border-radius:50%;display:grid;place-items:center;color:var(--accent);font-size:13px;padding-left:3px}
.video-badge{position:absolute;top:8px;right:9px;color:var(--dim);font:12px var(--mono);letter-spacing:.08em}
.video-track{height:2px;background:#2a2722;margin-top:14px;overflow:hidden}
.video-track i{display:block;width:52%;height:100%;background:var(--accent);animation:progress 2.4s ease-in-out infinite alternate}
.video-tags{display:flex;gap:14px;margin-top:12px}
.video-tag{color:var(--muted);font:11px var(--mono);letter-spacing:.06em}
.video-tag:before{content:'';display:inline-block;width:6px;height:6px;border:1px solid var(--accent);border-radius:50%;margin-right:6px;background:var(--bg);vertical-align:1px}
.image-core{position:absolute;left:50%;top:50%;width:320px;transform:translate(-50%,-50%);border:1px solid var(--line);background:#161310ea;box-shadow:0 18px 50px #00000025;padding:16px;display:flex;gap:16px;align-items:center}
.image-canvas{flex:0 0 130px;height:130px;border:1px solid #2a2621;background:linear-gradient(135deg,#1c1813,#100f0e);display:grid;place-items:center;color:var(--accent);font-size:34px}
.image-meta small{display:block;color:var(--muted);font:11px var(--mono);letter-spacing:.08em}
.image-meta b{display:block;color:var(--ink);font:500 19px var(--mono);margin:9px 0}
.image-meta span{color:var(--accent);font:11px var(--mono);letter-spacing:.06em}
@media(max-width:760px){.video-core{width:min(300px,82%);padding:12px}.video-play{width:38px;height:38px;font-size:11px}.image-core{width:min(270px,82%);padding:13px;gap:13px}.image-canvas{flex:0 0 100px;height:100px;font-size:27px}}