:root{color-scheme:dark;--bg:#121212;--surface:#1b1b1b;--text:#f6f3ed;--muted:#aaa7a1;--accent:#ff9c48;--accent-hover:#ffb36f;--line:#33312e;--soft:#242321;--dock-height:88px;--font:Inter,-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-bottom:calc(var(--dock-height) + 32px);scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 var(--font);-webkit-font-smoothing:antialiased;padding-bottom:var(--dock-height)}h1,h2,h3,p{margin:0}a{color:inherit;text-decoration:none}button{font:inherit;border:0;cursor:pointer}button,a,summary{-webkit-tap-highlight-color:transparent;touch-action:manipulation}button,a,summary{transition:color .18s,background-color .18s,border-color .18s}button:active,a:active{opacity:.8}a:hover{color:var(--accent)}button:focus-visible,a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:5px}svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}button svg{width:19px;height:19px}.icon-defs{position:absolute;width:0;height:0;overflow:hidden}.wrap{width:min(1120px,calc(100% - 64px));margin-inline:auto}.skip-link{position:fixed;top:12px;left:16px;z-index:100;background:var(--accent);color:var(--bg);padding:12px 20px;transform:translateY(-160%)}.skip-link:focus{transform:none}.masthead{background:var(--bg)}.header{display:flex;align-items:center;justify-content:space-between;min-height:88px}.brand{display:flex;gap:11px;align-items:center;font-size:19px;font-weight:700;line-height:1.4}.brand img{object-fit:contain}.brand small{display:block;font-size:11px;font-weight:400;letter-spacing:.14em;color:var(--muted);margin-top:2px}.header-channel{display:flex;align-items:center;gap:9px;min-height:44px;font-size:13px}.header-channel svg:last-child{width:15px;height:15px;color:var(--muted)}.notice{border-block:1px solid var(--line);display:flex;align-items:center;gap:28px;min-height:49px;font-size:12px}.notice-label{display:flex;align-items:center;gap:8px;color:var(--accent);white-space:nowrap}.notice-label svg{width:17px;height:17px}.notice-addresses{display:flex;gap:25px}.notice-addresses a{display:flex;gap:9px;align-items:center;min-height:44px}.notice-addresses span{color:var(--muted)}.notice-addresses b{font-weight:550;letter-spacing:.025em}.notice-tip{margin-left:auto;color:var(--muted)}.hero{display:grid;grid-template-columns:1.25fr .75fr;align-items:center;padding-block:55px 48px;gap:64px}.eyebrow{color:var(--muted);font-size:11px;letter-spacing:.18em;font-weight:600;display:flex;align-items:center;gap:8px}.eyebrow>span{display:block;width:6px;height:6px;border-radius:50%;background:var(--accent)}.hero .eyebrow{font-size:13px;letter-spacing:.16em;color:var(--text)}h1{font-size:clamp(36px,4.15vw,56px);line-height:1.26;letter-spacing:-.035em;font-weight:720;margin:18px 0}h1 em{font-style:normal;color:var(--accent)}.hero-description{color:var(--muted);font-size:16px;line-height:1.85}.content-types{display:flex;gap:0;margin-top:22px;font-size:13px;color:#d4cfc7}.content-types span+span:before{content:"/";color:#716b62;margin-inline:13px;font-size:11px}.hero-brand{display:flex;align-items:center;flex-direction:column;padding-bottom:6px}.logo-orbit{position:relative;display:grid;place-items:center;width:228px;height:208px}.logo-orbit:before{content:"";position:absolute;inset:-24px -34px;background:radial-gradient(ellipse,rgba(231,130,53,.1),transparent 67%);pointer-events:none}.logo-orbit img{position:relative;object-fit:contain}.wordmark{font-size:32px;font-weight:750;letter-spacing:.18em;padding-left:.18em;line-height:1.5}.wordmark>span{font-weight:400;color:#c2b6a6}.brand-caption{font-size:9px;letter-spacing:.2em;color:var(--muted);margin-top:8px}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:22px}.section-heading h2{font-size:19px;font-weight:650;letter-spacing:.02em}.section-heading h2 span{font-size:10px;letter-spacing:.12em;font-weight:400;color:var(--muted);margin-left:10px}.section-heading>p{font-size:12px;color:var(--muted)}.version-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}.version{min-width:0;border-top:1px solid var(--line);padding-top:22px}.version-top{display:flex;align-items:center;justify-content:space-between;gap:8px}.platform-icon{display:flex;color:var(--text)}.platform-icon svg{width:27px;height:27px}.version-state{color:var(--muted);font-size:11px}.version-state.warning{color:#e7b582}.version-copy{margin:16px 0}.version h3{font-size:17px;font-weight:650;letter-spacing:.01em}.version-copy p{font-size:12px;color:var(--muted);margin-top:5px;line-height:1.6;min-height:20px}.button{display:inline-flex;align-items:center;justify-content:center;gap:14px;min-height:46px;padding:10px 22px;background:var(--accent);color:#21180f;font-size:13px;font-weight:650;border:1px solid transparent;border-radius:7px}.button:hover{background:var(--accent-hover);color:#21180f}.button.is-unavailable{background:#2b2b2b;color:#c8c5bf;border-color:#494744}.button.is-unavailable:hover{background:#353431;color:var(--text)}.version-button{width:100%;justify-content:space-between}.download-note{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:12px;padding-block:19px 0}.download-note svg{width:15px;height:15px}.notice-fallback{padding:20px;color:var(--accent)}.section{padding-block:54px;border-top:1px solid var(--line);margin-top:48px}.help,.faq{display:grid;grid-template-columns:360px minmax(0,1fr);gap:72px}.section h2{font-size:31px;font-weight:660;line-height:1.45;letter-spacing:-.025em;margin-top:12px}.help-intro h2 span{color:var(--muted)}.help-intro>p:not(.eyebrow),.faq-intro>p:not(.eyebrow){font-size:14px;color:var(--muted);margin-top:14px;line-height:1.85}.video-links{margin-top:28px;display:grid;gap:12px}.video-links a{display:flex;align-items:center;gap:12px;padding-block:8px;min-height:62px}.play-icon{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--soft);color:var(--accent);flex-shrink:0}.play-icon svg{width:18px;height:18px}.video-links b{font-size:13px;font-weight:550}.video-links small{display:block;color:var(--muted);font-size:11px;margin-top:2px}.video-links a>svg{margin-left:auto;width:16px;height:16px;color:var(--muted)}.guide-tabs{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:22px}.guide-tabs button{padding:8px 13px;min-height:44px;background:transparent;color:var(--muted);font-size:12px;border-radius:6px}.guide-tabs button:hover{background:var(--soft);color:var(--text)}.guide-tabs button[aria-selected=true]{color:var(--accent);background:#30271f}.guide-panel{min-height:276px}.guide-panel h3{font-size:17px;font-weight:620}.guide-subtitle{font-size:12px;color:var(--muted);margin-top:5px}.guide-steps{margin:20px 0;padding:0;list-style:none;counter-reset:step;display:grid;gap:14px}.guide-steps li{display:grid;grid-template-columns:24px 1fr;gap:11px;font-size:14px;color:#d0cdc8;line-height:1.8;counter-increment:step}.guide-steps li:before{content:counter(step,decimal-leading-zero);font-size:11px;color:var(--accent);font-variant-numeric:tabular-nums;padding-top:3px}.guide-note{border-left:2px solid #6c5035;padding-left:13px;font-size:12px;line-height:1.8;color:var(--muted)}.guide-video{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);min-height:44px;margin-top:10px}.guide-video svg{width:15px;height:15px}.faq{margin-top:0}.faq-list details{border-bottom:1px solid var(--line)}.faq-list details:first-child{border-top:1px solid var(--line)}summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 0;min-height:64px;font-size:14px;cursor:pointer}summary::-webkit-details-marker{display:none}summary:after{content:"+";font-size:22px;color:var(--muted);font-weight:300}details[open]>summary{color:var(--accent)}details[open]>summary:after{content:"−"}.answer{font-size:14px;color:var(--muted);padding:0 24px 20px 0;line-height:1.9}.answer a{color:var(--accent);text-decoration:underline;text-underline-offset:4px}.channel{border-block:1px solid var(--line);padding:23px 0;display:flex;align-items:center;justify-content:space-between;gap:24px}.channel>div{display:flex;gap:17px;align-items:center}.channel>div>svg{width:27px;height:27px;color:var(--accent)}.channel strong{display:block;font-size:15px;font-weight:550}.channel p span{display:block;font-size:12px;color:var(--muted);margin-top:4px}.channel>a{display:inline-flex;align-items:center;gap:20px;min-height:44px;font-size:13px;color:var(--accent)}.footer{padding-block:25px 29px;display:flex;gap:24px;align-items:center;color:var(--muted);font-size:11px}.footer>a{margin-left:auto;display:inline-flex;align-items:center;min-height:44px}.download-dock{position:fixed;z-index:20;bottom:0;left:0;right:0;background:rgba(25,25,24,.97);border-top:1px solid #45413c;box-shadow:0 -8px 35px #0002;padding-bottom:env(safe-area-inset-bottom);backdrop-filter:blur(16px)}[hidden]{display:none!important}.dock-inner{display:flex;align-items:center;gap:16px;padding-block:14px}.dock-symbol{width:40px;height:40px;background:var(--soft);display:grid;place-items:center;border-radius:8px;color:var(--accent)}.dock-copy{display:flex;flex:1;min-width:0;flex-direction:column;gap:2px}.dock-copy strong{font-size:14px;font-weight:550}.dock-copy>span{font-size:11px;color:var(--muted)}.dock-switch{font-size:12px;color:var(--muted);background:transparent;min-height:44px;padding-inline:12px}.dock-switch:hover{color:var(--text)}.dock-inner>.button{min-width:176px}.dialog-open{overflow:hidden}.dialog-open .download-dock{visibility:hidden}dialog{border:1px solid #484039;border-radius:16px;background:var(--surface);color:var(--text);padding:0;width:min(560px,calc(100% - 32px));max-height:calc(100dvh - 48px);overflow:auto;overscroll-behavior:contain;box-shadow:0 24px 100px #0009}dialog::backdrop{background:rgba(0,0,0,.75);backdrop-filter:blur(5px)}.dialog-head{display:flex;align-items:center;justify-content:space-between;padding:12px 16px 12px 28px;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted);position:sticky;top:0;background:var(--surface);z-index:1}.dialog-close{width:44px;height:44px;display:grid;place-items:center;background:transparent;color:var(--text);border-radius:6px}.dialog-close:hover{background:var(--soft)}#dialog-content{padding:28px}#modal-title{font-size:25px;font-weight:650;line-height:1.45;outline:none}.modal-intro{font-size:14px;line-height:1.9;color:var(--muted);margin-top:14px}.modal-warning{padding:13px 16px;background:#30271f;border-left:2px solid var(--accent);color:#eac7a5;font-size:13px;line-height:1.8;margin:18px 0}.modal-links{display:flex;gap:12px;margin:24px 0}.modal-links a{flex:1}.modal-steps{padding-left:20px;color:#d0cdc8;font-size:14px;line-height:1.9;display:grid;gap:10px}.modal-note{font-size:12px;color:var(--muted);line-height:1.85;margin-top:20px}.modal-choice-list{display:grid;gap:12px;margin-top:24px}.modal-choice{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;border:1px solid var(--line);border-radius:8px;padding:14px 18px;background:var(--soft);color:var(--text);min-height:66px}.modal-choice:hover{border-color:var(--accent)}.modal-choice strong{font-size:15px;font-weight:550}.modal-choice small{display:block;font-size:12px;color:var(--muted);margin-top:3px}
@media(min-width:1440px){.hero{padding-block:64px 56px}}
@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.notice-tip{display:none}.hero{gap:24px}.help,.faq{grid-template-columns:280px minmax(0,1fr);gap:40px}.version-grid{gap:18px}.version-copy p{font-size:11px}.version h3{font-size:16px}.content-types span+span:before{margin-inline:10px}.hero-brand{transform:scale(.93)}}
@media(max-width:760px){.wrap{width:calc(100% - 40px)}.header{min-height:77px}.brand{font-size:17px}.brand img{width:37px;height:37px}.brand small{font-size:10px}.header-channel{font-size:12px;gap:7px}.header-channel>svg:first-child{width:19px;height:19px}.notice{gap:12px;align-items:flex-start;padding-block:9px}.notice-label{font-size:11px;min-height:30px}.notice-addresses{flex:1;flex-wrap:wrap;gap:0 18px}.notice-addresses a{min-height:30px;font-size:11px;gap:8px}.hero{grid-template-columns:1fr auto;padding-block:36px 34px;gap:10px}.hero .eyebrow{font-size:11px;letter-spacing:.12em}h1{font-size:clamp(29px,4.8vw,37px);margin:12px 0 14px;line-height:1.3}.hero-description{font-size:14px}.hero-brand{transform:none;width:130px}.logo-orbit{width:130px;height:130px}.logo-orbit img{width:120px;height:120px}.logo-orbit:before{inset:-20px}.wordmark{font-size:20px;letter-spacing:.1em}.brand-caption{font-size:6px;letter-spacing:.09em;margin-top:5px}.content-types{font-size:11px;margin-top:18px}.content-types span+span:before{margin-inline:7px}.section-heading{margin-bottom:10px}.section-heading h2{font-size:17px}.section-heading h2 span{display:none}.section-heading>p{font-size:11px}.version-grid{grid-template-columns:1fr;gap:0}.version{display:grid;grid-template-columns:32px minmax(0,1fr) 116px;gap:13px;align-items:center;padding-block:18px}.version-top{display:contents}.version-state{display:none}.platform-icon svg{width:25px;height:25px}.version-copy{margin:0}.version h3{font-size:15px}.version-copy p{font-size:11px;margin-top:2px;min-height:0}.version-button{font-size:12px;min-height:44px;padding:10px 12px;gap:6px}.version-button svg{width:16px;height:16px}.download-note{padding-top:3px;align-items:flex-start;font-size:11px;line-height:1.8}.download-note svg{margin-top:3px}.section{padding-block:35px;margin-top:32px}.help,.faq{grid-template-columns:1fr;gap:24px}.section h2{font-size:27px;margin-top:8px}.help-intro h2 br{display:none}.help-intro h2 span{margin-left:5px}.help-intro>p:not(.eyebrow),.faq-intro>p:not(.eyebrow){font-size:13px;margin-top:10px}.desktop-break{display:none}.video-links{grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}.video-links a{gap:8px;min-height:60px}.video-links b{font-size:12px;line-height:1.6;display:block}.video-links small{font-size:10px}.video-links a>svg{display:none}.play-icon{width:34px;height:34px}.guide-tabs{margin-bottom:18px;gap:4px}.guide-tabs button{font-size:12px;padding:8px 12px}.guide-panel{min-height:0}.guide-steps{gap:12px;margin-block:18px}.guide-steps li{font-size:14px;gap:8px}.guide-panel h3{font-size:16px}.faq{margin-top:0}.faq-list summary{font-size:14px;min-height:60px;padding-block:16px}.answer{padding-right:6px}.channel{align-items:flex-start;gap:14px;padding-block:20px;flex-direction:column}.channel>div{gap:13px}.channel strong{font-size:14px}.channel p span{font-size:11px}.channel>a{margin-left:40px;min-height:36px;font-size:12px}.footer{font-size:10px;gap:12px;padding-block:18px}.footer>span:nth-child(2){display:none}.dock-inner{padding-block:11px;gap:10px}.dock-symbol{display:none}.dock-copy strong{font-size:12px}.dock-copy>span{font-size:10px;line-height:1.6}.dock-inner>.button{min-width:132px;padding:10px 13px;font-size:12px;gap:10px}.dock-switch{display:none}dialog{max-height:calc(100dvh - 32px);border-radius:12px}.dialog-head{padding-left:20px}#dialog-content{padding:22px}#modal-title{font-size:23px}}
@media(max-width:480px){.hero{position:relative;display:block;padding-block:31px 30px}.hero-copy{position:relative;z-index:1}.hero-brand{position:absolute;right:0;top:26px;width:86px;pointer-events:none}.logo-orbit{width:86px;height:101px}.logo-orbit img{width:86px;height:86px}.wordmark,.brand-caption{display:none}.hero .eyebrow{font-size:10px}h1{font-size:clamp(28px,7.4vw,35px);letter-spacing:-.045em;padding-right:40px}.hero-description{font-size:13px;max-width:300px}.content-types{font-size:11px}.content-types span+span:before{margin-inline:9px}.notice-addresses{gap:0 12px}.notice-addresses a{width:100%;min-height:29px}.notice{padding-block:7px}.notice-label{min-height:29px}.header-channel svg:last-child{display:none}.version{grid-template-columns:27px minmax(0,1fr) 107px;gap:11px}.version h3{font-size:14px}.version-copy p{font-size:10px}.version-button{padding-inline:11px}.help-intro h2{font-size:25px}.video-links{gap:10px}.video-links b{font-size:11px}.guide-tabs button{padding-inline:11px}.dock-copy>span{max-width:205px} .dock-inner>.button{min-width:126px}.modal-links{flex-direction:column}}
@media(max-width:359px){.wrap{width:calc(100% - 32px)}.hero-brand{width:65px;top:35px}.logo-orbit{width:65px}.logo-orbit img{width:65px;height:65px}h1{font-size:27px;padding-right:0}.version{gap:8px;grid-template-columns:25px minmax(0,1fr) 100px}.version-copy p{font-size:10px}.hero-description{max-width:265px}.content-types span+span:before{margin-inline:7px}.video-links{grid-template-columns:1fr;gap:2px}.video-links a>svg{display:block}.help-intro h2{font-size:23px}.dock-inner>.button{min-width:116px;font-size:11px}.dock-copy strong{font-size:11px}.dock-copy>span{font-size:10px}}
.version{display:flex;flex-direction:column}.version-copy{flex:1}.version-button{margin-top:auto}
@media(max-width:760px){.logo-orbit:before{inset:-20px -12px}.version{display:grid}.version-button{margin-top:0}.notice{display:grid;grid-template-columns:1fr;gap:0;padding-block:7px}.notice-label{min-height:23px}.notice-addresses{display:flex;flex-wrap:nowrap;gap:18px;justify-content:flex-start}.notice-addresses a{min-height:44px;width:auto}.channel>a{min-height:44px}}
.dock-copy{overflow-wrap:anywhere}.modal-choice>span:first-child{min-width:0;overflow-wrap:anywhere}
.config-feedback{margin:0;padding:14px 24px;text-align:center;background:var(--soft);font-size:14px;color:var(--text)}.config-feedback button{min-height:44px;padding:8px 16px;border-radius:6px;background:var(--accent);color:var(--bg);margin-left:12px}.config-loading .version-button{visibility:hidden}.hero-description,.help-intro>p:not(.eyebrow),.answer,.modal-intro,.modal-warning,.modal-note{white-space:pre-line}.content-types{flex-wrap:wrap;row-gap:8px}.modal-subtitle{font-size:18px;margin-top:24px}.tutorial-open{margin-top:18px;width:100%}.tutorial-dialog{width:min(860px,calc(100% - 32px));max-height:calc(100dvh - 32px);overflow:hidden}.tutorial-dialog[open]{display:flex;flex-direction:column}.tutorial-dialog .dialog-head{flex:none}.tutorial-dialog .dialog-head>span{font-size:14px;color:var(--text)}.tutorial-progress{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:8px 24px;font-size:13px;flex:none;border-bottom:1px solid var(--line)}.tutorial-progress>a{min-height:44px;display:inline-flex;align-items:center;color:var(--accent)}.tutorial-image-area{overflow:auto;overscroll-behavior:contain;min-height:0;padding:18px 24px;flex:1}.tutorial-image-area>img{display:block;width:100%;height:auto;max-width:100%;margin:0 auto;border-radius:7px}.tutorial-image-area>p{font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:16px}.tutorial-controls{padding:14px 24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex:none;background:var(--surface)}.tutorial-controls>.button{min-width:112px}.tutorial-controls>.button:disabled{opacity:.45;cursor:not-allowed}.tutorial-dialog::backdrop{background:#000c}.guide-steps li,.version-copy{overflow-wrap:anywhere}.hero-description{max-width:620px}.version-copy p{overflow-wrap:anywhere}
@media(max-width:760px){.tutorial-dialog{width:calc(100% - 20px);max-height:calc(100dvh - 20px)}.tutorial-progress,.tutorial-controls{padding-inline:16px}.tutorial-image-area{padding:16px}.tutorial-controls{padding-bottom:max(14px,env(safe-area-inset-bottom))}.config-feedback{padding:12px 20px;font-size:13px}.hero-description,.help-intro>p:not(.eyebrow){white-space:normal}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
.guide-video-button{margin-top:20px;min-height:44px;font-size:14px}