/* 技术理念与下载中心专用，保留其他页面的展示层。 */
.depth-page{--disp:var(--sans);--depth-bg:#030b16;--depth-blue:#79c2ff;--depth-muted:#afbdcf;background:radial-gradient(ellipse at 70% 9%,#1230592b,transparent 30%),var(--depth-bg);color:#eef3f9;line-height:1.75;overflow-x:clip}
.depth-page h1,.depth-page h2,.depth-page h3{font-family:var(--sans)}
.depth-page h1{font-size:clamp(44px,5vw,76px);line-height:1.28;letter-spacing:.035em;font-weight:720;text-shadow:0 3px 2px #000}
.depth-page h2{font-size:clamp(26px,2.7vw,40px);line-height:1.45;font-weight:620;letter-spacing:.025em}
.depth-page h3{font-weight:500;font-size:22px;line-height:1.5}
.depth-container{width:min(100%,1440px);padding-inline:clamp(24px,4.4vw,72px);margin-inline:auto}
.depth-nav{position:sticky;top:0;height:88px;padding-inline:clamp(24px,4.4vw,76px);background:#030b16ed;border-bottom:1px solid #34495d80;backdrop-filter:blur(16px)}
.depth-page .logo{font-family:var(--sans);font-weight:500;font-size:28px;gap:14px}
.depth-page .logo svg{width:46px;height:46px;color:var(--depth-blue)}
.depth-page .navlinks{gap:42px;font-size:18px}
.depth-page .navlogin{padding:8px 32px;border-color:#8faac5;border-radius:6px}
.depth-page .navlinks .on{color:#fff}
.depth-page .navlinks .on::after{background:#4cacff;box-shadow:0 0 8px #1687ff}
.icon-defs{position:absolute;width:0;height:0;overflow:hidden}
.depth-icon{width:44px;height:44px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;color:#96cfff;flex:none;filter:drop-shadow(0 0 7px #328ffe55)}
.depth-eyebrow{display:inline-block;color:#83c9ff;border:1px solid #4377a0;border-radius:8px;padding:5px 16px;margin-bottom:28px;font-size:16px}
.depth-hero{display:grid;grid-template-columns:43% 57%;align-items:center;min-height:680px;padding-top:48px;padding-bottom:52px}
.depth-hero-copy{position:relative;z-index:1}
.depth-lead{color:#bbc8d7;font-size:clamp(16px,1.4vw,20px);margin-top:28px;line-height:1.9}
.depth-actions{display:flex;gap:26px;flex-wrap:wrap;margin-top:44px}
.depth-button{display:inline-flex;align-items:center;justify-content:center;gap:22px;border:1px solid #809fbe;border-radius:7px;min-height:55px;padding:12px 30px;font-family:var(--sans);font-size:18px;font-weight:500;line-height:1.5;color:#f2f7ff;transition:filter .18s,transform .18s}
.depth-button.primary{background:linear-gradient(120deg,#0874f9,#0755cd);border-color:#50a4fc;box-shadow:inset 0 1px 1px #cbeaff,0 7px 20px #002e8050}
.depth-button.secondary{background:linear-gradient(125deg,#1d31487d,#040c17);box-shadow:inset 0 1px 0 #d1e5ff44}
.depth-button:hover{filter:brightness(1.16);transform:translateY(-1px)}
.depth-button[aria-disabled="true"]{color:#9cabbf;background:#142133;border-color:#3a526a;box-shadow:none;cursor:not-allowed;transform:none;filter:none}
.depth-button span[aria-hidden]{font-size:24px;line-height:1}
.depth-section{padding-top:60px;padding-bottom:60px;border-top:1px solid #30435980}
.depth-section.compact{padding-top:38px;padding-bottom:38px}
.centered{text-align:center}
.section-intro{color:var(--depth-muted);margin-top:16px;font-size:18px}
.glass-panel{position:relative;background:linear-gradient(135deg,#334d6a66,#0b192ce6 36%,#040c17);border:1px solid #8baacb;border-radius:12px;box-shadow:inset 0 1px 1px #d1e6ff,inset 0 0 0 5px #8db6df12,0 5px 0 #01060d,0 15px 34px #0005}
.glass-panel::after{content:"";position:absolute;inset:5px;border:1px solid #5e81a488;border-radius:8px;pointer-events:none}
.depth-note{font-size:14px;color:#9dabc0;margin-top:24px}
/* 完整原图转码后用 CSS 取景，保留原型立体材质及底座铭牌。 */
.tech-hero-art{width:100%;aspect-ratio:416 / 446;background:url('/assets/tech-reference-v1.webp') no-repeat;background-size:200.96154% auto;background-position:89.285714% 7.526132%;mask-image:linear-gradient(to right,transparent,black 4%,black 95%,transparent);pointer-events:none}
.coordinate-model{aspect-ratio:758 / 205;width:100%;margin-top:42px;background:url('/assets/tech-reference-v1.webp') no-repeat;background-size:110.290237% auto;background-position:51.282051% 41.76611%;mask-image:linear-gradient(to bottom,transparent,black 4%,black 97%,transparent)}
.coordinate-controls{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:38px;margin:10px 0 28px}
.coordinate-controls>div{display:flex;justify-content:center;gap:10px}
.coordinate-controls button{border:1px solid #395b7e;background:#0c1a2d;color:#bacadd;border-radius:6px;font:inherit;font-size:15px;min-width:56px;min-height:44px;padding:6px 12px;cursor:pointer}
.coordinate-controls button:hover,.coordinate-controls button[aria-pressed="true"]{color:#e3f2ff;border-color:#67beff;background:#134073;box-shadow:0 0 12px #097df440}
.node-panel{max-width:690px;margin:0 auto;padding:20px 28px 24px;min-height:188px}
.node-code{font:12px var(--mono);color:#8dbce8;letter-spacing:.08em;margin-bottom:6px}
.node-panel h3{font-size:24px}
.state-list{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;margin:18px 0 12px}
.state-list span{border:1px solid #5185b8;border-radius:30px;padding:4px 22px;color:#c4e2ff;font-size:16px}
.state-list .state-clear{border-color:#478d87;color:#90dbd0}
.state-list .state-alert{border-color:#965759;color:#e5a9aa}
.node-panel>p:last-child{color:#99acc3;font-size:14px}
.coordinate-details,.principle-details,.install-detail{margin-top:32px;text-align:left;border-top:1px solid #2c4159;border-bottom:1px solid #2c4159}
.depth-page summary{cursor:pointer;list-style:none;position:relative;padding:18px 32px 18px 0;font-size:17px;color:#c4d5e7}
.depth-page summary::-webkit-details-marker{display:none}
.depth-page summary::after{content:"+";position:absolute;right:4px;top:14px;font-size:24px;font-weight:300;color:#9fb9d6}
.depth-page details[open]>summary::after{content:"−"}
.coordinate-details summary>span{font-size:13px;color:#88a5c4;margin-left:18px}
.depth-page details>p{font-size:16px;color:#a9bdd3;padding-bottom:22px}
.coordinate-directory{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;padding:8px 0 26px}
.coordinate-directory h3{font-size:19px;color:#88c8ff;margin-bottom:14px}
.coordinate-directory ul{list-style:none}
.coordinate-directory li{padding:10px 0;border-top:1px solid #29415a;color:#cad6e4;font-size:15px}
.coordinate-directory code{font-size:12px;color:#7d9fc1}
.coordinate-directory small{display:block;font-size:13px;color:#a3b3c6;margin-top:6px}
.principle-layout{display:grid;grid-template-columns:64% 32%;justify-content:space-between;align-items:stretch;margin-top:48px;gap:4%}
.principle-layers{list-style:none;display:grid;gap:28px}
.principle-layers li{display:grid;grid-template-columns:62% 38%;align-items:center;text-align:left;position:relative}
.principle-layers li:not(:last-child)::after{content:"↓";position:absolute;left:30%;bottom:-29px;color:#7cc9ff;font-size:26px;line-height:28px;text-shadow:0 0 8px #1b8eff}
.principle-layers .glass-panel{display:flex;align-items:center;gap:16px;padding:24px 22px}
.principle-layers .depth-icon{width:34px;height:34px}
.principle-layers strong{font-size:20px;font-weight:500}
.principle-layers span{color:#a8c9ec;font-size:18px}
.principle-layers p{font-size:16px;color:#c8d8ea;padding-left:30px;position:relative}
.principle-layers p::before{content:"";width:19px;height:1px;position:absolute;left:4px;top:50%;background:#529de1}
.reply-example{padding:28px;text-align:left}
.example-label{color:#aabed5;margin-bottom:24px;font-size:15px}
.reply-example dl{display:grid;grid-template-columns:auto 1fr;gap:16px 10px;font-size:16px;line-height:1.85}
.reply-example dt{color:#75bcff}
.reply-example dd{margin:0;color:#d7e1ec}
.boundary-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin-top:40px}
.boundary-grid article{display:flex;align-items:center;gap:22px;text-align:left;padding:32px 22px}
.boundary-grid h3{font-size:21px}.boundary-grid p{font-size:15px;color:#b6c7d9;margin-top:8px}
.boundary-grid .depth-icon{width:56px;height:56px}
.boundary-review{border-color:#9b845a;background:linear-gradient(130deg,#55432a50,#0d121b)}
.boundary-review h3,.boundary-review .depth-icon{color:#edc783}
.boundary-human{border-color:#835965;background:linear-gradient(130deg,#50263240,#0d121b)}
.boundary-human .depth-icon{color:#d78692}
.depth-finale{padding-top:38px}
.depth-finale .depth-actions{justify-content:center;margin-top:30px}
.depth-footer{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;border-top:1px solid #34485f;padding-top:24px;padding-bottom:28px;color:#9caec2;font-size:14px}
.download-hero{grid-template-columns:46% 50%;justify-content:space-between;gap:4%;min-height:700px}
.download-hero h1{font-size:clamp(44px,4.4vw,66px)}
.download-subtitle{color:#b2bfd3;margin-top:18px;font-size:clamp(26px,2.8vw,38px)!important}
.download-hero .depth-lead{font-size:17px;margin-top:24px}
.download-connection{aspect-ratio:406 / 160;margin-top:38px;background:url('/assets/download-reference-v1.webp') no-repeat;background-size:233.2512315% auto;background-position:7.393715% 26%;mask-image:linear-gradient(to right,transparent,black 3%,black 97%,transparent)}
.connection-labels{display:flex;justify-content:space-around;color:#adbed4;font-size:16px;margin-top:4px}
.download-card{padding:46px 42px;text-align:center;border-radius:18px;box-shadow:inset 0 1px 2px #e0efff,inset 0 0 0 5px #99bfe333,inset 0 0 0 9px #01060d,0 6px 0 #01060d,0 16px 36px #0008}
.download-card::after{inset:12px;border-radius:9px;border-color:#68a3da}
.download-card>.depth-icon{width:72px;height:72px;margin-bottom:16px;color:#63b6ff;stroke-width:1.7}
.download-card h2{font-size:36px}
.download-os{font-size:18px;color:#c4d2e4;margin-top:6px}
.release-meta{border:1px solid #2b455f;border-radius:8px;background:#111e30;padding:12px 14px;color:#b5c6d9;font-size:14px;margin:24px 0;min-height:50px;overflow-wrap:anywhere}
.download-button{width:100%;font-size:22px;min-height:64px}
.download-links{display:flex;justify-content:space-between;gap:16px;margin-top:30px;color:#82c9ff;font-size:16px}
.download-device-note{color:#9dabc0;font-size:15px;margin-top:40px}
.release-retry{font:inherit;font-size:15px;background:none;border:0;color:#85caff;text-decoration:underline;cursor:pointer;min-height:44px;margin-top:10px}
.depth-page [hidden]{display:none!important}
.download-card noscript p{font-size:14px;color:#b4c5da;margin-top:18px}
.download-card noscript a,.download-faq a{color:#8acdff;text-decoration:underline}
.download-page .compact h2{font-size:28px}
.requirements{list-style:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding:28px 18px;margin-top:26px}
.requirements li{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;padding:8px 14px;border-right:1px solid #304a67;text-align:center;font-size:18px}
.requirements li:last-child{border:0}
.installation-warning{display:flex;align-items:flex-start;gap:16px;padding:14px 20px;margin-top:26px;border:1px solid #8e661e;border-radius:7px;color:#e6c27e;background:linear-gradient(110deg,#32281777,#100f0c55);font-size:16px}
.installation-warning>span{display:grid;place-items:center;border:1px solid #edc77d;border-radius:50%;width:24px;height:24px;flex:none;line-height:1;margin-top:2px}
.install-steps{list-style:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:30px;margin-top:30px}
.install-steps li{padding:24px 14px 28px;text-align:center}
.install-steps li:not(:last-child)::before{content:"→";position:absolute;left:100%;width:30px;top:45%;font-size:24px;color:#81d1ff;text-shadow:0 0 7px #1b8cff}
.step-number{display:block;font:32px var(--mono);color:#bfd9f5}
.install-steps .depth-icon{width:64px;height:64px;margin:26px auto 20px;display:block}
.install-steps h3{font-size:22px}
.install-steps p{font-size:15px;color:#aebfd3;margin-top:12px}
.shortcut{display:flex;justify-content:center;align-items:center;gap:8px;height:64px;margin:26px auto 20px;font-size:16px}
.shortcut kbd{font:inherit;border:1px solid #8eafce;border-radius:6px;background:linear-gradient(130deg,#284562,#091525);box-shadow:inset 0 1px 0 #def0ff,0 4px 0 #010812;padding:12px 8px}
.install-steps .key-step{display:inline-block;color:#edc576;border:1px solid #806221;border-radius:5px;padding:2px 12px;margin-top:10px}
.install-detail ol{padding:0 0 12px 24px;color:#b3c5db;font-size:16px}
.install-detail li{padding:6px 0 12px 8px}
.install-detail strong{color:#e1ecf8;font-weight:500}
.download-faq{margin-top:22px}
.download-faq details{border-top:1px solid #263b54}
.download-faq details:last-child{border-bottom:1px solid #263b54}
.download-faq summary{padding:16px 32px 16px 12px;font-size:18px}
.download-faq details>p{padding:0 30px 22px 12px}
.download-finale{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:34px;padding:22px 30px}
.download-finale p{font-size:20px;color:#bdcee2}
.skip-link{position:fixed;top:-80px;left:20px;z-index:100;padding:12px 20px;background:#164891;border-radius:6px}
.skip-link:focus{top:10px}
.depth-page :focus-visible{outline:2px solid #8bd1ff;outline-offset:5px}
.depth-page [id]{scroll-margin-top:108px}
@media(min-width:901px){.depth-page .mobmenu{display:none}}
@media(max-width:1100px){
.principle-layout{grid-template-columns:60% 36%}.principle-layers li{grid-template-columns:1fr}.principle-layers p{padding:14px 8px 0}.principle-layers p::before{display:none}.principle-layers li:not(:last-child)::after{left:48%}
.boundary-grid article{flex-direction:column;text-align:center;padding:28px 16px}.download-card{padding:38px 28px}.install-steps{gap:22px}.install-steps li:not(:last-child)::before{width:22px}
}
@media(max-width:900px){
.depth-nav{height:76px}.depth-page .logo{font-size:24px}.depth-page .logo svg{width:38px;height:38px}.depth-page .navlogin{padding:6px 22px}
.depth-hero{min-height:0;padding-top:48px;padding-bottom:48px;grid-template-columns:42% 58%}
.depth-page h1{font-size:48px}.depth-hero .depth-lead{font-size:16px}.depth-hero .depth-actions{margin-top:30px}.depth-hero .depth-button{padding:12px 20px;font-size:16px}
.depth-section{padding-top:44px;padding-bottom:44px}.coordinate-controls{gap:20px}.coordinate-controls>div{gap:5px}.coordinate-controls button{padding:5px 8px;min-width:48px}
.download-hero{grid-template-columns:1fr 1fr;gap:24px}.download-hero h1{font-size:44px}.download-subtitle{font-size:27px!important}
.download-card{padding:32px 24px}.download-card h2{font-size:30px}.download-card>.depth-icon{width:56px;height:56px}.download-links{flex-direction:column;gap:14px}.download-button{font-size:18px}
.download-device-note{margin-top:26px}.requirements li{font-size:15px;padding:8px}.install-steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}.install-steps li::before{display:none}
.coordinate-directory{gap:20px}.coordinate-directory code{display:block}.principle-layers .glass-panel{gap:12px;padding:22px 18px}
.boundary-grid{gap:18px}.boundary-grid h3{font-size:19px}.depth-footer{font-size:13px}
}
@media(max-width:600px){
.depth-container{padding-inline:22px}.depth-nav{height:68px;padding-inline:18px;gap:10px}.depth-page .logo{font-size:20px;gap:8px}.depth-page .logo svg{width:30px;height:30px}.depth-page .navlogin{padding:5px 13px;font-size:14px}.depth-page .burger{width:34px}
.depth-hero,.download-hero{grid-template-columns:1fr;gap:0;padding-top:34px;padding-bottom:36px}.depth-page h1{font-size:48px}
.depth-eyebrow{margin-bottom:18px;font-size:14px}.depth-lead{margin-top:20px}.depth-actions{gap:14px;margin-top:28px}.depth-button{padding:12px 22px;font-size:16px;min-height:50px}
.tech-hero-art{margin-top:28px;max-width:520px;justify-self:center}
.depth-page h2{font-size:27px}.depth-section{padding-top:38px;padding-bottom:38px}.section-intro{font-size:16px}
.coordinate-model{margin-top:26px}.coordinate-controls{grid-template-columns:1fr;gap:10px;margin-top:20px}.coordinate-controls>div{justify-content:stretch;gap:10px}
.coordinate-controls>div::before{content:attr(aria-label);display:flex;align-items:center;min-width:64px;font-size:14px;color:#96b3d3}.coordinate-controls button{flex:1}
.node-panel{padding:20px 18px;min-height:190px}.state-list{gap:10px}.state-list span{font-size:14px;padding:4px 14px}
.coordinate-directory{grid-template-columns:1fr;gap:24px}.coordinate-directory code{display:inline}.coordinate-details summary>span{display:block;margin-left:0}
.principle-layout{grid-template-columns:1fr;gap:28px;margin-top:30px}.principle-layers li{grid-template-columns:1fr}.principle-layers p{padding-top:12px;text-align:center}.principle-layers li:not(:last-child)::after{left:48%}.principle-layers .glass-panel{justify-content:center}
.reply-example{padding:26px}.boundary-grid{grid-template-columns:1fr;gap:20px;margin-top:28px}.boundary-grid article{flex-direction:row;text-align:left;gap:22px;padding:28px}.boundary-grid h3{font-size:21px}
.depth-finale .depth-actions{gap:14px}.depth-finale .depth-button{flex:1;padding-inline:14px}.depth-note{font-size:13px}
.download-subtitle{font-size:29px!important}.download-hero .depth-lead{font-size:16px}.download-connection{margin-top:24px}.connection-labels{font-size:14px}
.download-card{margin-top:34px;padding:32px 28px}.download-card h2{font-size:32px}.download-links{flex-direction:row;font-size:14px;gap:12px}.download-os{font-size:16px}.download-button{font-size:20px}
.download-page .compact h2{font-size:24px}.requirements{grid-template-columns:repeat(2,minmax(0,1fr));padding:18px 12px;row-gap:22px}.requirements li:nth-child(2){border:0}.requirements li{font-size:15px;gap:14px}
.installation-warning{font-size:14px;padding:14px;gap:12px}.install-steps{gap:18px}.install-steps li{padding:22px 10px}.install-steps h3{font-size:18px}.install-steps p{font-size:13px}.step-number{font-size:26px}.install-steps .depth-icon{width:48px;height:48px;margin:22px auto}.shortcut{height:48px;margin:22px auto;gap:5px;font-size:13px}.shortcut kbd{padding:9px 6px}
.download-faq summary{font-size:16px;padding-left:0}.download-faq details>p{font-size:15px;padding-left:0}.download-finale{flex-direction:column;align-items:stretch;padding:24px}.download-finale p{font-size:18px;text-align:center}.depth-footer{justify-content:center;text-align:center;font-size:12px}
.depth-page [id]{scroll-margin-top:86px}
}
@media(prefers-reduced-motion:reduce){.depth-page *, .depth-page *::before,.depth-page *::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}