:root{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#193732;background:#f4f7f4;font-synthesis:none;--green:#186b54;--muted:#75847d;--line:#dce5df}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button,a{touch-action:manipulation}button,a.secondary{cursor:pointer}a{color:inherit;text-decoration:none}button:disabled{opacity:.55;cursor:wait}[hidden]{display:none!important}.shell{max-width:1120px;margin:auto;padding:0 36px}header{height:102px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;font-size:18px;font-weight:650;letter-spacing:.5px}.brand-icon{display:grid;place-items:center;background:var(--green);color:#e5f0bf;width:40px;height:40px;border-radius:12px;font-size:15px}.brand-sub{font-size:12px;font-weight:400;border-left:1px solid #bdcbc2;padding-left:14px;margin-left:14px;color:var(--muted)}.header-right{display:flex;align-items:center;gap:12px}.local-tag{font-size:11px;letter-spacing:1px;color:#788b7c;border:1px solid var(--line);border-radius:20px;padding:8px 13px}.intro{padding:58px 0 31px;position:relative}.eyebrow{font-size:11px;letter-spacing:1.5px;color:var(--green);font-weight:650;display:flex;align-items:center;gap:8px}.eyebrow span{width:7px;height:7px;border-radius:50%;background:#7dac73}h1{font-size:clamp(34px,4.3vw,49px);line-height:1.35;letter-spacing:-1.5px;margin:19px 0 17px;font-weight:650}h1 span{color:var(--green)}.intro p{color:var(--muted);font-size:14px;line-height:1.9}.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:0 12px 45px #284c3810}.panel-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:17px}h2{font-size:18px;font-weight:600;margin:0}.panel-heading span{font-size:12px;color:var(--muted)}textarea{display:block;width:100%;resize:vertical;min-height:148px;max-height:440px;border:1px solid #dce5df;border-radius:11px;padding:17px;color:#244d41;background:#fbfcfa;font-size:14px;line-height:1.65}textarea::placeholder{color:#9aa79e}textarea:focus,input:focus{outline:2px solid #cde6d5;outline-offset:2px;border-color:#5a9677}.input-footer{display:flex;justify-content:space-between;align-items:center;margin-top:8px;color:#909a94;font-size:11px}.text-button{border:0;background:none;color:var(--muted);font-size:12px;padding:8px}.actions{display:flex;align-items:center;gap:21px;margin-top:19px}.actions p{font-size:12px;color:var(--muted);margin:0;line-height:1.7}.primary{background:var(--green);border:1px solid var(--green);color:white;border-radius:9px;padding:13px 25px;font-size:14px;font-weight:550;display:inline-flex;align-items:center;gap:30px;white-space:nowrap}.primary:hover{background:#11523f}.secondary{display:inline-flex;align-items:center;justify-content:center;border:1px solid #cbd9ce;background:white;border-radius:8px;padding:9px 13px;font-size:12px;color:var(--green);white-space:nowrap}.secondary:hover{background:#eef5ee}#notice{margin-top:18px;padding:12px 14px;border-radius:8px;background:#f0f5ed;font-size:13px;line-height:1.7}#notice.error{background:#fff3ef;color:#ad4e35}.results-heading{display:flex;justify-content:space-between;align-items:end;margin:36px 0 17px;gap:12px}.results-heading .eyebrow{font-size:10px;margin-bottom:9px}.results-heading h2{font-size:21px}.results-heading h2 span{color:var(--muted);font-size:13px;margin-left:8px}.result-actions{display:flex;gap:8px;flex-wrap:wrap}.results-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.video-card{border:1px solid var(--line);background:white;border-radius:14px;overflow:hidden}.preview{aspect-ratio:16/9;background:#e9eee8;display:grid;place-items:center;position:relative}.preview video{width:100%;height:100%;position:absolute;inset:0;background:#111;object-fit:contain}.placeholder{display:flex;flex-direction:column;align-items:center;gap:10px;color:#7f9183}.state-icon{font-size:28px;font-weight:300}.status-label{font-size:13px;font-weight:450}.progress-text{font-size:11px}.video-card[data-status="parsing"] .state-icon,.video-card[data-status="downloading"] .state-icon{animation:rotate 2s linear infinite}.video-card[data-status="failed"] .preview{background:#f4eeea}.video-card[data-status="failed"] .placeholder{color:#b1816a}@keyframes rotate{to{transform:rotate(360deg)}}.card-content{padding:17px}.card-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.card-top h3{font-size:14px;margin:0;font-weight:600}.badge{font-size:10px;color:#718074;background:#edf2ec;padding:4px 7px;border-radius:5px}.video-card[data-status="complete"] .badge{color:var(--green);background:#e4f1e5}.video-card[data-status="failed"] .badge{color:#a75a43;background:#faede6}.metadata{font-size:11px;color:var(--muted);margin:9px 0}.share-link{font-size:11px;display:block;color:#87968b;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin:8px 0 17px}.card-actions{border-top:1px solid #edf1ed;padding-top:13px;display:flex;justify-content:space-between;align-items:center;gap:8px}.download-button{font-size:12px;color:var(--green);font-weight:600}.view-share{font-size:11px;color:#8a958e}.item-error{color:#ae5b45;font-size:12px;line-height:1.65;margin:9px 0}.cache-note{font-size:11px;color:#8d9a91;line-height:1.6}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;padding:38px 0 44px}.steps>div{border-top:1px solid var(--line);padding-top:17px;position:relative}.steps span{font-size:11px;color:#90a394;float:right}.steps h3{font-size:13px;font-weight:550;margin:0 0 8px}.steps p{font-size:11px;color:#8a978e;margin:0}footer{border-top:1px solid var(--line);padding:20px 0 30px;display:flex;justify-content:space-between;gap:15px;font-size:10px;color:#97a398}.login-panel h2{margin-bottom:8px}.login-panel p{font-size:13px;color:var(--muted)}.login-panel label{display:block;font-size:12px;margin:20px 0 9px}.login-row{display:flex;gap:12px}.login-row input{flex:1;min-width:0;background:#fbfcfa;border:1px solid var(--line);border-radius:8px;padding:12px}.error-text{color:#ad4e35!important}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:640px){.shell{padding:0 20px}header{height:80px}.brand-sub{margin-left:9px;padding-left:9px}.local-tag{display:none}.intro{padding:38px 0 22px}h1{font-size:34px;letter-spacing:-1px}.panel{padding:19px}.actions{align-items:flex-start;flex-direction:column;gap:13px}.primary{justify-content:space-between;width:100%}.results-grid{grid-template-columns:1fr}.results-heading{align-items:flex-start;flex-direction:column;gap:16px}.steps{gap:13px;padding:28px 0}.steps h3{font-size:12px}.steps p{font-size:10px;line-height:1.6}.steps span{float:none;display:block;margin-bottom:8px}footer{flex-direction:column;gap:9px}.login-row{flex-direction:column}.desktop-break{display:none}}@media(prefers-reduced-motion:reduce){*{animation:none!important}}

.name-form{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;align-items:end;margin:13px 0}.name-form label{font-size:11px;color:#738579}.name-input{display:block;width:100%;min-width:0;border:1px solid var(--line);border-radius:7px;padding:8px 10px;margin-top:6px;font-size:12px;color:#244d41;background:#fbfcfa}.name-hint{grid-column:1/-1;font-size:10px;color:#87968b;margin:0;line-height:1.5}

.login-panel{max-width:600px;margin:0 auto}.login-panel input{display:block;width:100%;border:1px solid var(--line);border-radius:8px;padding:12px;background:#fbfcfa}.login-panel .actions{flex-wrap:wrap}.login-panel #register-note{font-size:12px}

/* 会员工具站布局：集中入口、平台说明、功能与FAQ */
:root{--green:#4f46e5;--muted:#6b7280;--line:#e6e8f0;color:#172033;background:#fafbff}
.shell{max-width:1160px}header{height:82px}header nav{display:flex;gap:28px;font-size:13px;color:#647087}header nav a:hover{color:var(--green)}.brand-icon{border-radius:11px;color:#fff;background:linear-gradient(135deg,#5e62ed,#854bec)}.brand-sub{display:block;border:0;padding:0;margin:4px 0 0;font-size:9px;letter-spacing:2px}.brand{font-size:17px}.local-tag{border-color:#e0defe;background:#f1f0ff;color:#6555c4}
.intro{text-align:center;padding:64px 0 36px}.eyebrow{justify-content:center;color:#6558cb;letter-spacing:.8px}.eyebrow span{background:#8576ed}h1{font-size:clamp(36px,5vw,56px);line-height:1.25;letter-spacing:-1.7px;margin:22px 0}h1 span{color:#6352dd}.intro p{font-size:15px;color:#71778c}.hero-tags{display:flex;justify-content:center;gap:22px;flex-wrap:wrap;font-size:12px;color:#7b8296;margin-top:22px}.hero-tags span:before{content:'✓';color:#7666d8;margin-right:6px}#workspace{scroll-margin-top:24px;max-width:960px;margin:auto}.panel{border-color:#e3e2f0;box-shadow:0 14px 50px #5751a80a}.login-panel{max-width:540px}.login-panel input,textarea{background:#fafaff;border-color:#e3e4ed;color:#263249}textarea:focus,input:focus{outline-color:#ddd8ff;border-color:#9581ef}.primary{background:#6250dc;border-color:#6250dc}.primary:hover{background:#5140c7}.secondary{color:#6250dc}.platforms{text-align:center;padding:32px 0 50px}.platforms>p{font-size:12px;color:#969bab;margin:0 0 18px}.platforms>div{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}.platform-chip{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:12px;padding:12px 18px;background:white;font-size:14px}.platform-chip b{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;color:white;font-size:18px}.doubao-icon{background:#21927e}.douyin-icon{background:#202432}.platform-chip small{font-size:11px;color:#8990a0}.info-section{padding:36px 0;scroll-margin-top:24px}.section-heading{text-align:center;margin-bottom:30px}.section-heading h2{font-size:27px;letter-spacing:-.5px}.section-heading p{font-size:13px;color:#858b9c;margin-top:12px}.steps{padding:0 0 15px;gap:22px}.steps>div{background:white;border:1px solid var(--line);border-radius:14px;padding:24px}.steps span{float:none;display:grid;place-items:center;width:35px;height:35px;background:#f0edff;color:#7564d9;border-radius:10px;margin-bottom:18px}.steps h3{font-size:16px;margin-bottom:12px}.steps p{font-size:13px;line-height:1.85;color:#7b8293}.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.feature-grid article{background:white;border:1px solid var(--line);border-radius:14px;padding:25px}.feature-grid article>span{font-size:24px;color:#7660df}.feature-grid h3{font-size:15px;margin:17px 0 10px}.feature-grid p{color:#818797;font-size:13px;line-height:1.85;margin:0}.faq{max-width:820px;margin:auto;padding-bottom:65px}.faq details{border:1px solid var(--line);border-radius:11px;background:white;margin-bottom:12px;padding:19px 22px}.faq summary{cursor:pointer;font-size:14px;font-weight:550}.faq details p{font-size:13px;color:#7c8293;line-height:1.9;margin-bottom:0}footer{color:#969bae}.results-heading .eyebrow{justify-content:flex-start}.badge{background:#f0edfb;color:#75688b}.video-card[data-status="complete"] .badge{background:#eeeaff;color:#6250dc}.preview{background:#f0eff7}
@media(max-width:700px){header nav{display:none}.shell{padding:0 18px}.intro{padding-top:40px}.hero-tags{gap:10px;font-size:10px}.feature-grid{grid-template-columns:1fr}.steps{grid-template-columns:1fr;gap:12px}.steps>div{padding:20px}.steps span{float:left;margin:0 16px 20px 0}.section-heading h2{font-size:23px}.platform-chip small{display:none}.brand-sub{display:none}.info-section{padding:26px 0}.faq{padding-bottom:40px}.platforms{padding-bottom:22px}.header-right .local-tag{display:block;font-size:10px;max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}

/* 深色网格：纯 CSS 静态背景，无图片、动画或额外请求。 */
:root{--green:#087f8c;--muted:#677687;--line:#dce5eb;background:#141d2a;color:#edf4fa}
body{background-color:#141d2a;background-image:linear-gradient(rgba(191,220,237,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(191,220,237,.045) 1px,transparent 1px),radial-gradient(ellipse 650px 520px at 100% 100px,rgba(13,176,177,.19),transparent 75%),radial-gradient(ellipse 580px 500px at 0 720px,rgba(144,57,115,.15),transparent 75%);background-size:60px 60px,60px 60px,100% 100%,100% 100%;margin:0}
header{position:relative;isolation:isolate;border-bottom:0;color:#182332}header:before{content:'';position:absolute;z-index:-1;inset:0 calc((100% - 100vw)/2);background:#fff;border-bottom:1px solid #e2e8ee}header nav{color:#536074}.brand-icon{background:linear-gradient(135deg,#11a6ad,#087e90)}.brand-sub{color:#738193}.local-tag{background:#e9faf9;color:#087980;border-color:#d0eeeb}
.intro{padding-top:72px}.intro .eyebrow{color:#7edbe4}.eyebrow span{background:#36c9db}h1{color:#f7fbff}h1 span{color:#36d1e4}.intro p{color:#c2ccd8}.hero-tags{color:#aebfce}.hero-tags span:before{color:#50d6d9}
.panel,.video-card{color:#203447;background:#fff;--muted:#617286;--line:#dbe4eb}.panel{border-color:#d6e1e8;box-shadow:0 16px 44px #030c191c}.login-panel input,textarea{background:#f7fafc;border-color:#d9e3e9;color:#243b4a}textarea:focus,input:focus{outline-color:#b7eceb;border-color:#299ca5}.primary{background:#087f8c;border-color:#087f8c;color:#fff}.primary:hover{background:#066875}.secondary{color:#087584}.login-panel .text-button{color:#566b7b}.preview{background:#eaf2f4}.video-card[data-status="complete"] .badge{background:#e2f6f4;color:#087584}.results-heading .eyebrow{color:#71d6df}.results-heading h2{color:#edf4fa}.results-heading .secondary{background:#fff}.results-heading h2 span,.cache-note{color:#b7c8d7}
.platforms>p{color:#a9bbcd}.platform-chip{background:#202d3d;border-color:#364657;color:#ecf6fa}.platform-chip small{color:#b0c3d0}.douyin-icon{background:#101926}.section-heading h2{color:#f2f7fc}.section-heading p{color:#adbdcf}.steps>div,.feature-grid article,.faq details{background:#1d2a3a;border-color:#344458;color:#edf4fa}.steps span{background:#1c454f;color:#7be4e6}.steps p,.feature-grid p,.faq details p{color:#b8c7d7}.feature-grid article>span{color:#61d6df}.faq summary{color:#eef5fa}footer{border-color:#334359;color:#a8bbce}
@media(max-width:700px){.intro{padding-top:42px}body{background-size:40px 40px,40px 40px,100% 100%,100% 100%}}

html,body{overflow-x:clip}