@charset "UTF-8";
:root{--bg:#f7f8f5;--paper:#fff;--ink:#1f3029;--muted:#68766f;--green:#176c58;--dark:#123e32;--wash:#e9f1e9;--line:#dde5dd;--radius:24px;font-family:Inter,"Segoe UI","Microsoft YaHei UI","PingFang SC",sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:32px}body{margin:0}a{color:inherit;text-decoration:none}button,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default}button,a,select,summary{touch-action:manipulation}:focus-visible{outline:3px solid #438f77;outline-offset:5px}button{color:inherit}img{max-width:100%;height:auto}p{line-height:1.85}h1,h2,h3,p,figure{margin:0}h1,h2,h3{font-weight:600;letter-spacing:-.04em}button{border:0}a,button,select{transition:background .18s,color .18s,transform .18s,border-color .18s}[hidden]{display:none!important}.wrap{width:min(1120px,calc(100% - 80px));margin-inline:auto}.sr-only,.skip-link:not(:focus){position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip-link:focus{position:fixed;top:12px;left:12px;z-index:10;background:var(--green);color:#fff;padding:12px 18px;border-radius:8px}.topbar{display:flex;align-items:center;justify-content:space-between;min-height:108px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px}.brand>span{font-size:21px;font-weight:650;line-height:1.3}.brand small{display:block;margin-top:3px;color:var(--muted);font-size:10px;letter-spacing:.06em;font-weight:400}.brand img{flex:none}.topbar nav{display:flex;align-items:center;gap:32px;font-size:13px}.topbar nav>a:hover,.text-link:hover,.footer a:hover{color:var(--green)}.nav-download{border-left:1px solid var(--line);padding-left:32px}.nav-download span{margin-left:10px}.eyebrow{font-size:12px;font-weight:550;letter-spacing:.12em;color:var(--green);display:flex;align-items:center;gap:8px}.status-dot{display:inline-block;width:7px;height:7px;background:var(--green);border-radius:50%;flex:none}.hero{display:grid;grid-template-columns:1fr 1.1fr;gap:40px;align-items:center;padding-block:82px 88px}.hero 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0;z-index:-1;background:radial-gradient(ellipse at 50% 50%,#e0ebe1 0,transparent 68%)}.demo-window{border:1px solid #d5dfd5;background:var(--paper);border-radius:16px;box-shadow:0 22px 65px -35px #2447343b;transform:rotate(-2deg);overflow:hidden}.window-bar{height:48px;background:#fafbf9;border-bottom:1px solid #e6ebe5;display:flex;align-items:center;justify-content:space-between;padding:0 18px;font-size:12px}.window-brand{display:flex;align-items:center;gap:8px;font-weight:600}.window-dots{color:#a4afa6;font-size:14px;letter-spacing:3px}.demo-body{padding:22px}.demo-topline{font-size:10px;display:flex;align-items:center;justify-content:space-between;color:var(--green);gap:8px}.demo-topline>span:first-child{display:flex;align-items:center;gap:7px}.pill{font-size:9px;color:var(--muted);border:1px solid var(--line);padding:4px 8px;border-radius:5px}.mapping-pair{display:grid;grid-template-columns:1fr 30px 1fr;align-items:center;margin-top:22px;gap:8px}.demo-key{border:1px solid var(--line);border-radius:12px;padding:15px 12px;display:flex;flex-direction:column;min-width:0;min-height:174px;transition:background .15s,border-color .15s,transform .15s}.key-caption{color:var(--muted);font-size:9px}.key-glyph{font-size:24px;line-height:1;margin-top:21px;color:var(--green)}.demo-key strong{font-size:16px;font-weight:600;margin-top:13px;letter-spacing:-.04em;white-space:nowrap}.demo-key select{width:100%;border:0;outline-offset:2px;color:var(--muted);background:transparent;font-size:10px;margin-top:6px;padding:2px 0;cursor:pointer}.mapping-arrow{text-align:center;color:#8caa97;font-size:20px}.demo-control{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:24px}.demo-control>span{font-size:9px;color:var(--muted);line-height:1.7;max-width:56%}.demo-control button{flex:none;padding:11px 13px;background:var(--green);color:#fff;border-radius:7px;font-size:10px;user-select:none;-webkit-user-select:none;touch-action:none}.demo-control button span{margin-left:8px}.demo-control button:hover{background:var(--dark)}.demo-key.is-held{background:#e6f1e8;border-color:#6aab8c;transform:translateY(2px)}.demo-control button.is-held{background:var(--dark);transform:translateY(2px)}.demo-caption{margin-top:25px;color:var(--muted);font-size:10px;text-align:center}.demo-caption span{margin-right:7px}.benefits{display:grid;grid-template-columns:repeat(3,1fr);border-block:1px solid var(--line);padding-block:30px;gap:36px}.feature-mark{font:10px/1.4 ui-monospace,monospace;color:#8c9d90;letter-spacing:.1em}.benefits h2{font-size:17px;margin:10px 0}.benefits p{font-size:12px;color:var(--muted)}.section{padding-block:86px}.section-heading h2{font-size:32px;line-height:1.5;margin-top:14px}.section-heading>p:last-child{font-size:13px;color:var(--muted);margin-top:10px}.steps{padding:0;list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:38px;margin:42px 0 32px}.steps li{border-top:1px solid var(--line);padding-top:23px}.step-number{width:30px;height:30px;display:grid;place-items:center;background:var(--wash);color:var(--green);font:12px ui-monospace,monospace;border-radius:9px}.steps h3{font-size:17px;margin:18px 0 10px}.steps p{font-size:12px;color:var(--muted);max-width:275px}.shortcut-note{display:flex;align-items:center;gap:18px;padding:20px 22px;background:#edf2ed;border-radius:10px;font-size:11px;color:var(--green)}.shortcut-note>span:first-child{display:flex;align-items:center;gap:5px;white-space:nowrap}.shortcut-note kbd{font:11px "Segoe UI",sans-serif;border:1px solid #d2ded2;background:#fafcf9;padding:4px 7px;border-radius:5px}.quiet{color:#839084;margin-left:auto;font-size:10px}.download-section{background:#e9f0e8;border-block:1px solid #dde6dc;padding-block:64px}.download-inner{display:grid;grid-template-columns:1fr 380px;gap:80px;align-items:center}.download-inner h2{font-size:34px;line-height:1.5;margin:18px 0}.download-inner>div>p:last-child{font-size:13px;color:var(--muted)}code{font:11px/1.7 ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere}.download-panel{background:#fff;border:1px solid #d7e1d5;border-radius:20px;padding:30px;display:flex;flex-direction:column;align-items:flex-start}.platform-mark{color:var(--green);font-size:28px;line-height:1}.download-panel h3{font-size:18px;margin-top:18px}.download-panel>p{color:var(--muted);font-size:11px;margin-top:8px}.download-panel .button{width:100%;justify-content:space-between;margin:24px 0 13px}.download-panel .text-link{font-size:11px;margin-bottom:14px}.download-panel small{color:#829184;font-size:10px}.faq-section{display:grid;grid-template-columns:1fr 1.2fr;gap:70px}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:20px 0}summary{font-size:13px;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;line-height:1.65}summary::-webkit-details-marker{display:none}summary:after{content:'+';color:var(--muted);font-size:19px;font-weight:300}details[open] summary:after{content:'−'}details>p{font-size:12px;color:var(--muted);margin-top:14px;line-height:1.9}.support-section{border-top:1px solid var(--line);scroll-margin-top:28px}.footer{border-top:1px solid var(--line);padding-block:26px;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:10px;color:var(--muted)}.footer-brand{display:flex;align-items:center;gap:8px}.footer a{font-size:11px}.support-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:32px}.support-card{border:1px solid var(--line);border-radius:22px;padding:34px;background:#fff;min-width:0}.card-symbol{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--wash);color:var(--green);font-size:24px;margin-bottom:26px}.support-card .eyebrow{font-size:10px}.support-card h3{font-size:28px;margin:12px 0 16px}.support-card>p:not(.eyebrow){font-size:12px;color:var(--muted)}.contact-option{display:flex;align-items:center;justify-content:space-between;gap:14px;border-top:1px solid var(--line);padding-block:22px}.contact-option:first-of-type{margin-top:30px}.contact-option strong{font-size:14px;font-weight:550}.contact-option small{display:block;font-size:11px;line-height:1.7;color:var(--muted);margin-top:6px}.contact-option [data-qq-number]{color:var(--green);font-family:ui-monospace,monospace;letter-spacing:.06em}.copy-button,.round-link{font-size:11px;background:var(--wash);color:var(--green);padding:10px 13px;border-radius:8px;flex:none}.round-link{font-size:18px;padding:5px 13px}.copy-button:hover,.round-link:hover{background:#dcebdd}.feedback-tip{margin-top:10px;padding:19px;background:#f5f7f3;border:1px solid #e7ece3;border-radius:12px}.feedback-tip strong{font-size:12px;font-weight:550}.feedback-tip p{font-size:11px;color:var(--muted);line-height:1.9;margin-top:10px}.feedback-tip button{font-size:11px;margin-top:13px}.donate-card{text-align:center;background:#edf3eb}.donate-card .card-symbol{margin-inline:auto;background:#dfeadd}.donate-card .eyebrow{justify-content:center}.donation-code{width:244px;max-width:100%;padding:18px;background:#fff;border:1px solid #e0e7dc;border-radius:16px;margin:26px auto 12px;box-shadow:0 8px 24px -18px #1c513f44}.donation-code img{display:block;width:100%;border-radius:2px;aspect-ratio:1}.donation-code figcaption{font-size:10px;color:var(--muted);line-height:1.8;margin-top:13px;display:flex;align-items:center;justify-content:center;gap:7px}.wechat-dot{width:6px;height:6px;background:#23b85d;border-radius:50%}.donate-card>.text-link{font-size:11px}.support-card>.donation-note{font-size:10px!important;margin-top:20px;line-height:1.9}.toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,20px);opacity:0;pointer-events:none;max-width:calc(100% - 32px);padding:12px 20px;background:var(--dark);color:#fff;font-size:12px;border-radius:9px;z-index:20;transition:opacity .2s,transform .2s;white-space:normal;text-align:center}.toast.visible{opacity:1;transform:translate(-50%,0)}.error-page{padding-block:90px}.error-page .eyebrow{margin-top:40px}.error-page h1{font-size:48px;line-height:1.4;margin:20px 0}.error-page .button{margin-top:30px}
@media(min-width:1500px){.hero{padding-block:100px}.hero h1{font-size:74px}.demo-window{transform:rotate(-2deg) scale(1.02)}}
@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.hero{gap:28px;grid-template-columns:1fr 1.06fr;padding-block:64px}.hero h1{font-size:52px}.demo-body{padding:16px}.mapping-pair{gap:5px;grid-template-columns:1fr 20px 1fr}.demo-key{padding:14px 10px}.demo-key strong{font-size:14px}.demo-control{flex-direction:column;align-items:stretch;gap:13px}.demo-control>span{max-width:100%}.demo-control button{width:100%}.download-inner{grid-template-columns:1fr 330px;gap:38px}.download-inner h2{font-size:28px}.faq-section{gap:35px}.support-card{padding:26px}.support-card h3{font-size:25px}.shortcut-note .quiet{display:none}}
@media(max-width:700px){.wrap{width:calc(100% - 40px)}.topbar{min-height:84px}.brand>span{font-size:19px}.brand img{width:34px;height:34px}.topbar nav{gap:18px;font-size:11px}.nav-download{padding-left:0;border:0}.topbar nav>a:first-child:not(:last-child){display:none}.hero{grid-template-columns:1fr;gap:38px;padding-block:46px 38px}.hero h1{font-size:52px;margin-block:20px}.lead{font-size:15px}.actions{gap:24px;margin-top:26px}.button{min-height:47px;padding:13px 19px;font-size:12px}.hero-meta{font-size:10px}.demo-stage{padding:16px 5px 0}.demo-window{transform:rotate(-1deg)}.demo-body{padding:20px}.mapping-pair{grid-template-columns:1fr 24px 1fr;gap:7px}.demo-key{min-height:169px;padding:14px 12px}.demo-key strong{font-size:16px}.demo-control{flex-direction:row;align-items:center;gap:12px}.demo-control>span{max-width:50%}.demo-control button{width:auto;font-size:9px;padding:11px 10px}.demo-caption{font-size:9px;margin-top:20px}.benefits{grid-template-columns:1fr;gap:20px;padding-block:26px}.benefits article{position:relative;padding-left:36px}.feature-mark{position:absolute;left:0;top:5px}.benefits h2{margin:0 0 7px;font-size:16px}.benefits p{font-size:12px}.benefits p br{display:none}.section{padding-block:50px}.section-heading h2{font-size:26px}.steps{grid-template-columns:1fr;gap:24px;margin-top:28px}.steps li{display:grid;grid-template-columns:32px 1fr;gap:4px 14px;padding-top:20px}.step-number{grid-row:1/3}.steps h3{margin:1px 0 5px;font-size:16px}.steps p{grid-column:2;max-width:none;font-size:12px}.shortcut-note{display:flex;flex-wrap:wrap;gap:12px;padding:16px}.shortcut-note p{font-size:10px}.download-section{padding-block:42px}.download-inner{grid-template-columns:1fr;gap:30px}.download-inner h2{font-size:28px}.download-panel{padding:26px}.faq-section{grid-template-columns:1fr;gap:25px}.footer{flex-wrap:wrap;gap:18px;font-size:9px;padding-block:22px}.footer>span:nth-child(2){margin-left:auto}.footer>a:last-child{margin-left:auto}.support-grid{grid-template-columns:1fr;gap:20px}.support-card{padding:26px}.support-card h3{font-size:27px}.error-page h1{font-size:38px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}