:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#1e2a28;background:#f7f8f6;font-synthesis:none}*{box-sizing:border-box}body{margin:0}.top{max-width:1030px;margin:auto;padding:26px 30px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #e0e6e0}.brand{font-size:15px;font-weight:750;letter-spacing:-.02em;display:flex;align-items:center;gap:10px}.mark{display:grid;place-items:center;background:#315d50;color:#fff;border-radius:9px;width:30px;height:30px;font-size:22px}.local{color:#617a6e;font-size:12px;font-weight:600}main{width:min(100% - 40px,720px);margin:auto}.intro{padding:70px 0 37px}.intro h1{font-size:clamp(38px,6vw,56px);letter-spacing:-.055em;line-height:1.08;margin:0 0 18px}.intro p{font-size:17px;color:#697773;line-height:1.6;max-width:570px;margin:0}.workspace{background:white;border:1px solid #e2e8e2;border-radius:16px;padding:32px;box-shadow:0 12px 40px #243c2e0b}.section-title{display:flex;gap:15px;align-items:flex-start}.number{font-size:12px;color:#739083;font-weight:700;line-height:27px}.section-title h2{font-size:19px;letter-spacing:-.025em;margin:0 0 4px}.section-title p{font-size:14px;color:#74817b;margin:0;line-height:1.5}.drop{margin-top:25px;min-height:205px;border:1.5px dashed #b6c9bb;border-radius:11px;background:#f8fbf8;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:9px;cursor:pointer;text-align:center}.drop.drag{background:#edf6ee;border-color:#396d59}.drop input{position:absolute;width:1px;height:1px;opacity:0}.drop:focus-within{outline:3px solid #98cbb3}.upload-icon{display:grid;place-items:center;border:1px solid #d6e4d9;background:white;border-radius:11px;width:43px;height:43px;font-size:25px;color:#356a53;margin-bottom:4px}.drop strong{font-size:14px;color:#315e4b}.drop strong span{font-weight:400;color:#77837d}.drop small{font-size:12px;color:#92a098}.file-row{display:flex;justify-content:space-between;gap:10px;margin:18px 0;color:#52645b;font-size:13px;overflow-wrap:anywhere}.text-button{border:0;background:none;color:#346a51;cursor:pointer;white-space:nowrap}video{width:100%;max-height:420px;background:#17211c;border-radius:10px}.divider{height:1px;background:#e8ede8;margin:30px 0}.time-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:25px 0}.time-grid label,.cover-heading{font-size:13px;font-weight:700}.time-grid label span{font-weight:400;color:#8b9890}.time-grid input{display:block;margin-top:8px;width:100%;padding:11px;border:1px solid #dbe4dd;border-radius:8px;font:inherit;color:#253b30}.cover-heading{display:flex;justify-content:space-between}.cover-heading output{font-weight:500;color:#738278}input[type=range]{width:100%;accent-color:#386b55;margin:16px 0}.cover-preview{display:flex;align-items:center;gap:15px;color:#829088;font-size:13px}.cover-preview canvas{width:130px;max-height:90px;object-fit:contain;background:#edf1ed;border-radius:7px}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;gap:20px;border:0;border-radius:8px;padding:14px 19px;text-decoration:none;font:600 14px system-ui;cursor:pointer}.primary{background:#315f4b;color:white}.primary:hover{background:#254d3b}.primary:disabled{opacity:.5;cursor:not-allowed}#convert{width:100%;justify-content:space-between}#status{font-size:13px;color:#718078;margin:12px 0 0}.secondary{color:#315f4b;background:#eef4ef}.download-row{display:flex;gap:8px;flex-wrap:wrap}#downloads{margin-top:24px;padding-top:20px;border-top:1px solid #e8ede8}#downloads h3{font-size:17px;margin:0}#downloads p{color:#718078;font-size:13px}.instructions{padding:55px 10px 55px}.instructions ol{padding-left:23px;margin:25px 0;color:#5f6e66;font-size:14px;line-height:1.7}.instructions li{padding-left:8px;margin-bottom:14px}.instructions strong{color:#273c31}aside{background:#edf3ed;border-left:3px solid #80a78e;border-radius:0 8px 8px 0;padding:17px 20px;font-size:13px;line-height:1.6}aside p{margin:4px 0 0;color:#66776b}footer{border-top:1px solid #e0e6e0;max-width:1030px;margin:auto;padding:25px 30px 45px;color:#66786b;font-size:12px}footer span{float:right;color:#91a096}[hidden]{display:none!important}@media(max-width:550px){.top{padding:20px}.local{font-size:0}.local::first-letter{font-size:12px}.intro{padding:49px 0 28px}.workspace{padding:23px}.instructions{padding:42px 4px}footer span{display:block;float:none;margin-top:8px}}

.sample-action{margin:22px 0 8px;display:flex;justify-content:center;gap:8px;flex-wrap:wrap}
.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;gap:20px;border:0;border-radius:8px;padding:14px 19px;text-decoration:none;font:600 14px system-ui;cursor:pointer}
.download-row{display:flex;gap:8px;flex-wrap:wrap}
#downloads{margin-top:24px;padding-top:20px;border-top:1px solid #e8ede8}
#downloads h3{font-size:17px;margin:0}
#downloads p{color:#718078;font-size:13px}
.privacy{padding:8px 10px 36px}.privacy h2{font-size:20px;letter-spacing:-.02em;margin:0 0 12px}.privacy p{font-size:14.5px;color:#5f6e66;line-height:1.7;margin:0 0 12px;max-width:720px}footer a{color:#315f4b;font-weight:600}
.guide{padding:55px 10px 40px}
.guide-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap}
.guide-head h2{font-size:22px;letter-spacing:-.03em;margin:0 0 4px}
.guide-head p{margin:0;color:#74817b;font-size:14px}
.lang-switch{display:flex;border:1px solid #d6e4d9;border-radius:8px;overflow:hidden}
.lang-switch button{border:0;background:#fff;color:#315f4b;font:600 13px system-ui;padding:8px 12px;cursor:pointer}
.lang-switch button[aria-pressed="true"]{background:#315f4b;color:#fff}
.guide-steps{list-style:none;margin:28px 0 16px;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.guide-steps li{background:#fff;border:1px solid #e2e8e2;border-radius:14px;padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px}
.guide-steps figure{margin:0;background:#f8fbf8;border-radius:10px;display:grid;place-items:center}
.guide-steps svg{width:100%;height:auto;display:block}
.guide-steps h3{margin:6px 0 0;font-size:16px;letter-spacing:-.02em;color:#273c31}
.guide-steps p{margin:0;color:#5f6e66;font-size:13.5px;line-height:1.55}
.guide-note{margin:0;color:#7a8a82;font-size:12.5px;line-height:1.6}
.guide-note a{color:#315f4b;font-weight:600}
@media(max-width:700px){.guide-steps{grid-template-columns:1fr}}
.intro .lede-zh{margin:-6px 0 14px;font-size:20px;font-weight:650;letter-spacing:-.02em;color:#315f4b}
.intro p + p{margin-top:10px}
.top{gap:16px}
.brand{color:inherit;text-decoration:none}
.top-nav{display:flex;align-items:center;gap:14px;margin-left:auto;margin-right:16px}
.top-nav a{color:#315f4b;font:600 13px system-ui;text-decoration:none}
.top-nav a[aria-current="page"]{text-decoration:underline;text-underline-offset:4px}
.output-target{margin:22px 0 0;padding:14px 16px;border:1px solid #e2e8e2;border-radius:11px;background:#f8fbf8}
.output-target legend{padding:0 6px;font-size:13px;font-weight:700;color:#273c31}
.output-target label{display:inline-flex;align-items:center;gap:8px;margin:6px 18px 4px 0;font-size:14px;color:#315e4b}
.output-target input{accent-color:#386b55}
.output-hint{margin:10px 0 0;font-size:13px;line-height:1.55;color:#718078}
.output-hint code,.intro code,.android-guide code{font-size:.95em}
.android-guide h2{font-size:22px;letter-spacing:-.03em;margin:28px 0 10px}
.android-guide p,.android-guide li,.android-guide dd{color:#5f6e66;font-size:14.5px;line-height:1.7}
.android-guide ol,.android-guide ul{margin:0 0 14px;padding-left:22px}
.android-guide .faq{margin:0 0 16px}
.android-guide dt{margin:16px 0 6px;font-size:16px;font-weight:700;color:#273c31}
.android-guide dd{margin:0}
.android-guide .sources{font-size:13.5px}
.android-guide a,.output-hint a,.intro a{color:#315f4b;font-weight:600}
@media(max-width:550px){.top-nav{margin-right:0}}
footer{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 24px}
footer span{float:none;margin-left:auto}
.footer-legal{flex:1 0 100%;margin:4px 0 0;color:#91a096;font-size:12px}
.footer-legal a{color:#315f4b;font-weight:600}
.plan-compare{margin:0 0 28px;padding:18px 20px;border:1px solid #e2e8e2;border-radius:14px;background:#f8fbf8}
.plan-compare h2{margin:0 0 12px;font-size:20px;letter-spacing:-.02em}
.plan-compare-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:16px 24px}
.plan-compare h3{margin:0 0 6px;font-size:16px;font-weight:650}
.plan-compare p{margin:0;color:#5f6e66;font-size:15px;line-height:1.6}
.plan-compare a,.policy-content a{color:#315f4b;font-weight:600}
.policy-content{padding:0 0 48px}
.policy-content h2{font-size:20px;letter-spacing:-.02em;margin:28px 0 10px}
.policy-content p,.policy-content li{color:#5f6e66;font-size:14.5px;line-height:1.7}
.policy-content p{margin:0 0 12px}
.policy-content ul{margin:0 0 14px;padding-left:22px}
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:16px;margin:20px 0 28px}
.pricing-card{padding:20px;border:1px solid #e2e8e2;border-radius:14px;background:#fff}
.pricing-card h2{margin:0 0 8px}
.pricing-card .price{color:#1e2a28;font-size:24px;font-weight:700;margin:0 0 8px}
.pricing-card .price span{font-size:14px;font-weight:400}
.pricing-card.is-recommended{border-color:#315f4b;background:#edf6ee;box-shadow:0 0 0 1px #315f4b}
.pricing-card .plan-badge{display:inline-block;margin:0 0 8px;padding:2px 8px;border-radius:99px;background:#315f4b;color:#fff;font-size:11px;font-weight:650;letter-spacing:.04em;text-transform:uppercase}
.pricing-card .price-lead{margin:0 0 10px;color:#1e2a28;font-weight:650}
.pricing-card .primary,.pricing-card .secondary{width:100%;margin-top:8px}
.pricing-card .secondary:disabled{opacity:.7;cursor:not-allowed}
@media(max-width:550px){footer span{margin-left:0}}

.pricing-actions{display:flex;flex-direction:column;gap:8px;margin-top:8px}
.checkout-message,.account-message{margin:12px 0;color:#315f4b}
.access-code-box{margin:12px 0;padding:14px 16px;border:1px solid #d6e4d9;border-radius:10px;background:#f8fbf8;font:600 15px ui-monospace,SFMono-Regular,Menlo,monospace;overflow-wrap:anywhere}
.account-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:16px 0}
.account-grid span{display:block;font-size:12px;color:#738278}
.account-grid strong{display:block;margin-top:4px;font-size:22px;color:#1e2a28}
.account-form{display:flex;flex-wrap:wrap;gap:12px;align-items:end;margin:16px 0 24px}
.account-form .field-label{flex:1 1 220px;font-size:13px;font-weight:700}
.account-form input{display:block;width:100%;margin-top:8px;padding:11px;border:1px solid #dbe4dd;border-radius:8px;font:inherit}
.quota-note{margin:14px 0 0;font-size:13px;line-height:1.55;color:#5f6e66}
.quota-note a{color:#315f4b;font-weight:600}