@charset "UTF-8";
:root{--paper:#f6f5f0;--ink:#242422;--muted:#66655f;--teal:#b9e6da;--teal-d:#1f8f7a;--hot:#f0783c;--halo:#ffd45c;--pink:#efcbd4;--green:#dfeab0;--lav:#c9bbec;--line:rgba(36,36,34,.3);
--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;--sans:Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;border:0;cursor:pointer;background:none}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #6750a4;outline-offset:4px}
h1,h2,h3,p{margin:0}h2{font-size:clamp(34px,4.6vw,66px);line-height:1.2;letter-spacing:-2px;font-weight:600}h3{font-weight:600;font-size:20px}
p{line-height:1.8}img,canvas{max-width:100%}
.mono{font-family:var(--mono);font-size:11px;line-height:1.5;letter-spacing:.03em}
.mark{font-family:"Songti SC","STSong","Noto Serif CJK SC",serif;font-weight:500;background:linear-gradient(transparent 62%,var(--halo) 62%)}
.section-pad{padding:40px 5.4% 100px}
.section-index{display:flex;justify-content:space-between;gap:20px;margin-bottom:64px;color:var(--muted)}
.lead{margin-top:22px;color:var(--muted);max-width:600px}
.note{margin-top:32px;font-size:13px;color:var(--muted);max-width:720px}
.skip-link{position:fixed;top:-80px;left:20px;background:var(--ink);color:#fff;padding:12px;z-index:100}.skip-link:focus{top:12px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:34px;padding:16px 24px;min-height:52px;font-size:14px;border:1px solid var(--ink);transition:transform .2s,box-shadow .2s,background .2s}
.button:hover{transform:translate(-2px,-2px);box-shadow:4px 4px 0 var(--ink)}
.button-dark{background:var(--ink);color:var(--paper)}.button-dark:hover{background:#48463f}
.underlined-link{display:inline-flex;gap:12px;align-items:center;font-size:13px;border-bottom:1px solid var(--ink);padding:5px 0}
.text-button{font-size:13px;padding:10px 0;border-bottom:1px solid var(--ink)}

.site-header{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 3.2%;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;background:var(--paper)}
.wordmark{font-size:26px;font-weight:650;letter-spacing:-1px;display:flex;align-items:center;gap:12px;white-space:nowrap}
.wordmark img{border-radius:10px}.wordmark span{font-family:var(--mono);font-size:10px;font-weight:500;letter-spacing:0}
.desktop-nav{display:flex;gap:32px;font-size:13px}.desktop-nav a{padding:7px 0;border-bottom:1px solid transparent}.desktop-nav a:hover{border-color:var(--ink)}
.header-right{display:flex;align-items:center;gap:24px}

.hero{padding:26px 5.4% 30px;background:linear-gradient(180deg,var(--teal) 0,var(--paper) 78%);border-bottom:1px solid var(--line)}
.hero-topline,.hero-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.tag{background:var(--halo);padding:2px 10px;border:1px solid var(--ink)}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center;padding:56px 0 48px}
.eyebrow{font-size:13px;letter-spacing:.09em;margin-bottom:20px}
h1{font-size:clamp(44px,6.2vw,92px);line-height:1.12;letter-spacing:-4px;font-weight:600}h1>span{display:block}
.hero-description{margin-top:28px;font-size:16px;max-width:540px}
.hero-actions{display:flex;flex-wrap:wrap;gap:28px;align-items:center;margin-top:36px}
.hero-bottom{color:var(--muted);padding-top:18px;border-top:1px solid var(--line)}

.hero-stage{position:relative;min-height:440px}
.win{background:var(--paper);border:1px solid var(--ink);box-shadow:5px 5px 0 var(--ink)}
.win-bar{display:flex;align-items:center;gap:10px;padding:8px 12px;border-bottom:1px solid var(--ink);font-family:var(--mono);font-size:10px;letter-spacing:.08em;background:var(--lav)}
.win-bar .num{margin-left:auto}.dot{width:9px;height:9px;border:1px solid var(--ink);border-radius:50%;background:var(--halo)}
.win-bars{position:absolute;left:0;top:0;width:76%}
.bars-body{position:relative;background:#fbfaf6;padding:14px 14px 34px}
.bars-body canvas{display:block;width:100%;height:auto}
.axis{position:absolute;left:14px;right:14px;bottom:10px;display:flex;justify-content:space-between;color:var(--muted)}
.legend{position:absolute;right:16px;top:16px;display:flex;align-items:center;gap:8px;color:var(--muted);background:#fbfaf6cc;padding:2px 6px}
.legend i{width:22px;border-top:2px dashed #d8412f;display:block}
.win-result{position:absolute;right:0;top:190px;width:62%}
.win-note{position:absolute;left:8%;bottom:0;width:50%}
.win-result .win-bar{background:var(--pink)}.win-note .win-bar{background:var(--green)}
.result-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.result-title{font-size:18px;font-weight:600;line-height:1.4}.result-sub{color:var(--muted)}.result-tip{font-size:14px;line-height:1.6}
.demo-foot{margin-top:6px}
.badge{font-size:12px;padding:3px 10px;border:1px solid var(--ink);font-weight:600}
.badge-hot{background:#f7b48f}.badge-mid{background:var(--halo)}.badge-ok{background:var(--green)}.badge-idle{background:var(--paper)}

.steps{list-style:none;margin:60px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--ink)}
.steps li{padding:28px 28px 32px 0;border-right:1px solid var(--line);margin-right:28px}.steps li:last-child{border-right:0;margin-right:0}
.step-n{color:var(--muted)}.steps h3{margin:14px 0 10px;font-size:24px}.steps p{color:var(--muted);font-size:15px}

.demo{background:var(--teal);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.demo-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:36px;margin-top:28px;align-items:start}
.result-card{min-height:200px}
.scene-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px}
.scene-tabs button{padding:10px 20px;border:1px solid var(--ink);background:var(--paper);font-size:14px;font-weight:600;transition:transform .2s,box-shadow .2s,background .2s}
.scene-tabs button:hover{transform:translate(-2px,-2px);box-shadow:3px 3px 0 var(--ink)}
.scene-tabs button[aria-selected=true]{background:var(--ink);color:var(--paper)}

.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:56px}
.cards article{border:1px solid var(--ink);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}
.cards article:hover{transform:translate(-2px,-2px);box-shadow:5px 5px 0 var(--ink)}
.kind-fig{height:130px;display:grid;place-items:center;font-family:var(--mono);font-size:44px;letter-spacing:.05em;border-bottom:1px solid var(--ink)}
.cards article>div:last-child{padding:20px 22px 24px}
.c1{background:var(--pink)}.c2{background:var(--green)}.c3{background:var(--lav)}.c4{background:var(--halo)}
.cards p{margin-top:8px;font-size:14px}

.privacy{background:var(--ink);color:var(--paper)}.privacy .section-index{color:#b9b8b0}
.principles{list-style:none;padding:0;margin:52px 0 0;display:grid;gap:0;max-width:820px}
.principles li{padding:20px 0;border-top:1px solid rgba(246,245,240,.25);font-size:15px;color:#d8d7cf}.principles strong{color:var(--halo);margin-right:8px}

.faq-list{margin-top:48px;max-width:820px;border-top:1px solid var(--ink)}
details{border-bottom:1px solid var(--line);padding:22px 0}
summary{cursor:pointer;font-size:18px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:20px}
summary::after{content:"+";font-family:var(--mono)}details[open] summary::after{content:"−"}
summary::-webkit-details-marker{display:none}details p{margin-top:12px;color:var(--muted);font-size:15px}

.closing{background:var(--halo);border-top:1px solid var(--ink);text-align:center;padding-top:80px;display:flex;flex-direction:column;align-items:center;gap:26px}
.site-footer{padding:28px 5.4%;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;font-size:12px;color:var(--muted)}
.site-footer div{display:flex;align-items:center;gap:10px;color:var(--ink)}.site-footer img{border-radius:7px}.site-footer p{line-height:1.6;max-width:520px}

@media(max-width:900px){
 .desktop-nav{display:none}.hero-grid,.demo-grid{grid-template-columns:1fr}.hero-stage{min-height:440px;max-width:520px}
 .steps{grid-template-columns:1fr}.steps li{border-right:0;border-bottom:1px solid var(--line);margin:0;padding-right:0}
 .cards{grid-template-columns:1fr 1fr}h1{letter-spacing:-2px}h2{letter-spacing:-1px}.section-index{margin-bottom:40px}
}
@media(max-width:560px){.cards{grid-template-columns:1fr}.wordmark span{display:none}.win-bars{width:86%}.win-result{width:78%;top:200px}.win-note{width:62%}.header-right .text-button{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.lang-switch select{appearance:none;-webkit-appearance:none;font:inherit;font-size:12px;padding:7px 30px 7px 12px;border:1px solid var(--ink);background:var(--paper) 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' fill='none' stroke='%23242422' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 11px center;color:var(--ink);cursor:pointer}
html[dir=rtl] .lang-switch select{padding:7px 12px 7px 30px;background-position:left 11px center}
html[lang=ar] h1,html[lang=ar] h2{letter-spacing:0}
html[lang=ja] h1,html[lang=ko] h1{letter-spacing:-2px}
html:not([lang^=zh]) h1{letter-spacing:-2px;font-size:clamp(38px,5vw,72px)}
html:not([lang^=zh]) .steps h3{font-size:22px}
html[dir=rtl] .steps li{padding:28px 0 32px 28px;border-right:0;border-left:1px solid var(--line);margin-right:0;margin-left:28px}
html[dir=rtl] .steps li:last-child{border-left:0;margin-left:0}
@media(max-width:560px){.header-right{gap:12px}}