:root{
  --red:#f3133d;--red-2:#ff3155;--red-soft:#fff0f3;
  --blue:#2d6fe8;--blue-soft:#edf4ff;--green:#139c62;
  --ink:#17243d;--ink-2:#293852;--muted:#68768d;--muted-2:#8794a8;
  --white:#fff;--bg:#f7f9fd;--line:#e1e7f0;--line-2:#d4ddea;
  --shadow:0 24px 70px rgba(43,69,109,.12);
  --shadow-sm:0 10px 32px rgba(43,69,109,.08);
  --radius:24px;--shell:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}
body.menu-open{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{color:inherit}
img,svg{display:block;max-width:100%}
svg{stroke-linecap:round;stroke-linejoin:round}
.site-shell{width:min(calc(100% - 40px),var(--shell));margin-inline:auto}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;left:12px;top:10px;z-index:1000;padding:9px 13px;border-radius:10px;background:var(--ink);color:#fff;transform:translateY(-160%)}
.skip-link:focus{transform:none}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);border-bottom:1px solid rgba(225,231,240,.92);backdrop-filter:blur(16px)}
.header-row{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:inline-flex;align-items:center;gap:10px;min-width:max-content}
.brand-icon{width:42px;height:42px;flex:0 0 42px}
.brand-icon svg{width:100%;height:100%}
.brand-copy strong{display:block;color:var(--ink);font-size:16px;line-height:1.1;letter-spacing:-.35px}
.brand-copy small{display:block;margin-top:4px;color:var(--muted);font-size:10px;line-height:1}
.desktop-nav{display:flex;align-items:center;gap:24px;color:#44526b;font-size:13px;font-weight:750}
.desktop-nav a{position:relative;padding:28px 0 25px}
.desktop-nav a:hover,.desktop-nav a[aria-current=page]{color:var(--red)}
.desktop-nav a[aria-current=page]::after{content:"";position:absolute;left:0;right:0;bottom:17px;height:2px;border-radius:3px;background:var(--red)}
.menu-button,.mobile-nav{display:none}
.section-tag,.mini-label{display:inline-flex;align-items:center;gap:7px;color:var(--red);font-size:10px;line-height:1;text-transform:uppercase;letter-spacing:.11em;font-weight:900}
.section-tag::before{content:"";width:16px;height:2px;border-radius:3px;background:var(--red)}
.hero-section{position:relative;overflow:hidden;padding:72px 0 82px;background:
 radial-gradient(circle at 88% 15%,rgba(255,48,82,.10),transparent 24%),
 radial-gradient(circle at 8% 40%,rgba(76,147,255,.09),transparent 24%),
 linear-gradient(180deg,#fff 0%,#f8faff 100%)}
.hero-section::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.18;background-image:radial-gradient(#9fb1cc 1px,transparent 1px);background-size:28px 28px;mask-image:linear-gradient(to bottom,#000,transparent 82%)}
.hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,.88fr) minmax(490px,1.12fr);align-items:center;gap:58px}
.hero-copy h1{margin:20px 0 18px;max-width:620px;font-size:clamp(45px,5vw,68px);line-height:1.02;letter-spacing:-3px}
.hero-copy h1 em{font-style:normal;color:var(--red)}
.hero-copy h1 .blue-word{color:var(--blue)}
.hero-copy>p{max-width:610px;margin:0;color:var(--muted);font-size:17px;line-height:1.75}
.hero-points{display:flex;flex-wrap:wrap;gap:11px 16px;margin-top:27px}
.hero-points span{display:inline-flex;align-items:center;gap:7px;padding:7px 10px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.74);color:#516078;font-size:11px;font-weight:750}
.hero-points svg{width:15px;height:15px;color:var(--red);fill:none;stroke:currentColor;stroke-width:2}
.hero-tool{position:relative}
.hero-tool::before{content:"";position:absolute;inset:30px -24px -25px 30px;z-index:-1;border-radius:34px;background:linear-gradient(135deg,rgba(255,49,85,.08),rgba(66,130,234,.08));filter:blur(2px)}
.downloader-card{padding:27px;border:1px solid rgba(214,224,238,.98);border-radius:28px;background:rgba(255,255,255,.98);box-shadow:var(--shadow)}
.tool-head{display:flex;align-items:flex-start;justify-content:space-between;gap:15px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.tool-head h2{margin:6px 0 0;font-size:21px;line-height:1.2;letter-spacing:-.6px}
.api-badge{display:inline-flex;align-items:center;gap:7px;flex:0 0 auto;padding:6px 9px;border:1px solid #dce6f0;border-radius:999px;background:#f8fafc;color:#65738a;font-size:10px;font-weight:800}
.api-badge i{width:7px;height:7px;border-radius:50%;background:#d59a16}
.api-badge.online{color:#28734d;border-color:#d7eee1;background:#f1fbf5}
.api-badge.online i{background:#1ca668}
.api-badge.offline{color:#a44141;border-color:#f0d6d6;background:#fff6f6}
.api-badge.offline i{background:#d74444}
.download-form{padding-top:19px}
.tool-step{min-width:0}
.step-label{display:flex;align-items:center;gap:8px;margin:0 0 8px;color:#35445d;font-size:11px;font-weight:850}
.step-label b{width:21px;height:21px;display:grid;place-items:center;border-radius:50%;background:var(--red);color:#fff;font-size:10px}
.url-control{position:relative;display:grid;grid-template-columns:auto 1fr auto;align-items:center;min-height:54px;border:1px solid var(--line-2);border-radius:14px;background:#fbfcff;transition:.2s ease}
.url-control:focus-within{border-color:#f38398;background:#fff;box-shadow:0 0 0 4px rgba(243,19,61,.07)}
.url-icon{padding-left:15px;color:#7b8aa1}
.url-icon svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8}
.url-control input{min-width:0;height:52px;padding:0 12px;border:0;outline:0;background:transparent;color:var(--ink);font-size:12px}
.url-control input::placeholder{color:#98a4b5}
.paste-button{height:38px;margin-right:7px;padding:0 12px;display:inline-flex;align-items:center;gap:6px;border:1px solid #ffd4dc;border-radius:10px;background:var(--red-soft);color:var(--red);font-size:10px;font-weight:850;cursor:pointer}
.paste-button svg{width:14px;fill:none;stroke:currentColor;stroke-width:1.8}
.paste-button:hover{background:#ffe4e9}
.input-note{margin:7px 2px 0;color:var(--muted-2);font-size:9.5px}
.video-preview{display:grid;grid-template-columns:112px minmax(0,1fr) auto;align-items:center;gap:12px;margin-top:14px;padding:10px;border:1px solid var(--line);border-radius:14px;background:#f8faff}
.preview-media{position:relative}
.preview-media img{width:112px;aspect-ratio:16/9;object-fit:cover;border-radius:9px;background:#e3eaf4}
.preview-media span{position:absolute;right:4px;bottom:4px;padding:2px 5px;border-radius:5px;background:rgba(22,35,57,.82);color:#fff;font-size:8px;font-weight:800}
.preview-copy{min-width:0}
.preview-copy strong{display:-webkit-box;overflow:hidden;-webkit-box-orient:vertical;-webkit-line-clamp:2;font-size:11px;line-height:1.4}
.preview-copy span{display:block;margin-top:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:9.5px}
.preview-ok{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:#eaf8f1;color:var(--green)}
.preview-ok svg{width:14px;fill:none;stroke:currentColor;stroke-width:2.2}
.tool-options{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}
.format-switch{display:grid;grid-template-columns:1fr 1fr;gap:7px}
.format-switch label{cursor:pointer}
.format-switch input{position:absolute;opacity:0;pointer-events:none}
.format-switch span{min-height:49px;display:flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line-2);border-radius:12px;background:#fafbfe;transition:.18s ease}
.format-switch strong{font-size:11px}
.format-switch small{color:#8794a8;font-size:9px}
.format-switch input:checked+span{border-color:#f17b91;background:var(--red-soft);color:var(--red);box-shadow:inset 0 0 0 1px rgba(243,19,61,.04)}
.format-switch input:focus-visible+span{outline:3px solid rgba(243,19,61,.14);outline-offset:2px}
.select-control{position:relative}
.select-control select{width:100%;height:49px;padding:0 38px 0 12px;appearance:none;border:1px solid var(--line-2);outline:0;border-radius:12px;background:#fafbfe;color:#34435d;font-size:11px;font-weight:800;cursor:pointer}
.select-control select:focus{border-color:#f17b91;box-shadow:0 0 0 4px rgba(243,19,61,.06)}
.select-control svg{position:absolute;right:12px;top:50%;width:15px;transform:translateY(-50%);fill:none;stroke:#79879d;stroke-width:1.8;pointer-events:none}
.download-action{width:100%;min-height:55px;margin-top:18px;display:inline-flex;align-items:center;justify-content:center;gap:9px;border:0;border-radius:14px;background:linear-gradient(135deg,var(--red-2),#e80d36);color:#fff;box-shadow:0 13px 28px rgba(238,22,61,.22);font-size:12px;font-weight:900;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease}
.download-action:hover{transform:translateY(-1px);box-shadow:0 16px 34px rgba(238,22,61,.26)}
.download-action:disabled{opacity:.66;cursor:wait;transform:none}
.download-action svg{width:18px;fill:none;stroke:currentColor;stroke-width:2}
.button-spinner{display:none;width:15px;height:15px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}
.download-action.loading .button-spinner{display:block}
.download-action.loading>svg{display:none}
@keyframes spin{to{transform:rotate(360deg)}}
.job-box{margin-top:14px;padding:14px;border:1px solid #dce5f1;border-radius:14px;background:#f8faff}
.job-row{display:flex;align-items:center;justify-content:space-between;gap:14px}
.job-row>div{display:flex;align-items:center;gap:9px}
.job-stage{color:#536278;font-size:10px;font-weight:850;text-transform:capitalize}
.job-row strong{color:var(--red);font-size:11px}
.link-button{padding:0;border:0;background:transparent;color:#7d899a;font-size:9.5px;cursor:pointer}
.progress-line{height:7px;margin-top:9px;overflow:hidden;border-radius:999px;background:#e3e9f2}
.progress-line span{display:block;width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--red-2),#ff6c83);transition:width .35s ease}
.job-box>p{margin:8px 0 0;color:#7a8799;font-size:9.5px}
.ready-meta{display:flex;flex-wrap:wrap;gap:7px 12px;margin-top:9px;color:#65748b;font-size:9px}
.final-download{min-height:44px;margin-top:11px;display:flex;align-items:center;justify-content:center;gap:8px;border-radius:11px;background:var(--green);color:#fff;font-size:11px;font-weight:900}
.final-download svg{width:16px;fill:none;stroke:currentColor;stroke-width:2}
.tool-error{margin-top:12px;padding:10px 12px;border:1px solid #f1cbd2;border-radius:11px;background:#fff4f6;color:#9f2a40;font-size:10px;font-weight:700}
.responsible-note{margin:13px 0 0;color:#8b97a8;text-align:center;font-size:9px;line-height:1.5}
[hidden]{display:none!important}
.quick-answer{padding:32px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.answer-grid{display:grid;grid-template-columns:.75fr 1.25fr;align-items:center;gap:54px}
.answer-grid h2{margin:7px 0 0;font-size:25px;letter-spacing:-.8px}
.answer-grid p{margin:0;color:#5c6b82;font-size:13px}
.content-section{padding:90px 0}
.content-section.white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin:0 auto 42px;text-align:center}
.section-head.left{margin-inline:0;text-align:left}
.section-head h2{margin:10px 0 0;font-size:clamp(30px,3.3vw,44px);line-height:1.13;letter-spacing:-1.6px}
.section-head p{margin:13px 0 0;color:var(--muted);font-size:14px}
.steps-layout{display:grid;grid-template-columns:.9fr 1.1fr;align-items:center;gap:58px}
.steps-list{display:grid;gap:14px}
.process-card{display:grid;grid-template-columns:auto 1fr;gap:15px;padding:18px;border:1px solid var(--line);border-radius:17px;background:#fff;box-shadow:var(--shadow-sm)}
.process-num{width:40px;height:40px;display:grid;place-items:center;border-radius:13px;background:var(--red-soft);color:var(--red);font-size:12px;font-weight:900}
.process-card h3{margin:2px 0 5px;font-size:15px;letter-spacing:-.3px}
.process-card p{margin:0;color:var(--muted);font-size:11.5px}
.device-visual{position:relative}
.device-visual img{width:100%;height:auto}
.format-layout{display:grid;grid-template-columns:.8fr 1.2fr;align-items:start;gap:60px}
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.compare-card{padding:24px;border:1px solid var(--line);border-radius:20px;background:#fbfcff}
.compare-badge{display:inline-flex;padding:5px 9px;border-radius:8px;font-size:10px;font-weight:900}
.compare-badge.mp3{background:var(--red-soft);color:var(--red)}
.compare-badge.mp4{background:var(--blue-soft);color:var(--blue)}
.compare-card h3{margin:19px 0 7px;font-size:20px;letter-spacing:-.5px}
.compare-card p{margin:0;color:var(--muted);font-size:11.5px}
.compare-list{margin:18px 0 0;padding:0;list-style:none}
.compare-list li{position:relative;margin:8px 0;padding-left:19px;color:#526178;font-size:10.5px}
.compare-list li::before{content:"";position:absolute;left:0;top:.55em;width:7px;height:7px;border:2px solid currentColor;border-radius:50%;color:#f15b76}
.question-note{margin-top:15px;padding:12px;border-left:3px solid var(--red);border-radius:0 10px 10px 0;background:#fff5f7;color:#5f6c7e;font-size:10.5px}
.quality-layout{display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:56px}
.quality-copy h3{margin:22px 0 7px;font-size:17px}
.quality-copy p{margin:0;color:var(--muted);font-size:12px}
.definition-box{margin-top:20px;padding:15px;border:1px solid #d8e4f4;border-radius:14px;background:#f4f8ff}
.definition-box strong{display:block;color:var(--blue);font-size:11px}
.definition-box p{margin:4px 0 0;font-size:10.5px}
.benefit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
.benefit-card{padding:23px;border:1px solid var(--line);border-radius:19px;background:#fff;box-shadow:0 8px 26px rgba(43,69,109,.045)}
.benefit-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:13px;background:var(--red-soft);color:var(--red)}
.benefit-icon.blue{background:var(--blue-soft);color:var(--blue)}
.benefit-icon.green{background:#ecf9f3;color:var(--green)}
.benefit-icon svg{width:21px;fill:none;stroke:currentColor;stroke-width:1.8}
.benefit-card h3{margin:19px 0 7px;font-size:15px}
.benefit-card p{margin:0;color:var(--muted);font-size:11px}
.guide-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:64px;align-items:start}
.guide-nav{position:sticky;top:105px;padding:20px;border:1px solid var(--line);border-radius:18px;background:#fff}
.guide-nav strong{display:block;margin-bottom:11px;font-size:12px}
.guide-nav a{display:block;padding:8px 0;border-top:1px solid #edf0f5;color:#65738a;font-size:10.5px}
.guide-nav a:hover{color:var(--red)}
.editorial h3{margin:31px 0 8px;font-size:20px;letter-spacing:-.45px}
.editorial h3:first-child{margin-top:0}
.editorial p{margin:0 0 14px;color:#596980;font-size:13px}
.editorial ul{margin:0 0 16px;padding-left:20px;color:#596980;font-size:12px}
.editorial li{margin:6px 0}
.callout{margin:22px 0;padding:17px;border:1px solid #f3d6dc;border-radius:15px;background:#fff7f8}
.callout strong{display:block;color:#b8304a;font-size:11px}
.callout p{margin:5px 0 0;font-size:11px}
.faq-wrap{display:grid;grid-template-columns:.72fr 1.28fr;gap:64px;align-items:start}
.accordion{border-top:1px solid var(--line)}
.accordion details{border-bottom:1px solid var(--line)}
.accordion summary{position:relative;padding:18px 38px 18px 0;list-style:none;cursor:pointer;font-size:13px;font-weight:850}
.accordion summary::-webkit-details-marker{display:none}
.accordion summary::after{content:"+";position:absolute;right:5px;top:12px;color:var(--red);font-size:23px;font-weight:400}
.accordion details[open] summary::after{content:"−"}
.accordion p{margin:-3px 0 18px;padding-right:34px;color:var(--muted);font-size:11.5px}
.final-cta{margin-top:34px;padding:25px;display:flex;align-items:center;justify-content:space-between;gap:22px;border-radius:21px;background:linear-gradient(135deg,#fff2f5,#eef5ff);border:1px solid #e8e4ec}
.final-cta h3{margin:0;font-size:20px}
.final-cta p{margin:5px 0 0;color:var(--muted);font-size:10.5px}
.cta-link{min-height:44px;padding:0 16px;display:inline-flex;align-items:center;justify-content:center;border-radius:11px;background:var(--red);color:#fff;font-size:10.5px;font-weight:900;white-space:nowrap}
.site-footer{padding:62px 0 25px;background:#eef3fb;border-top:1px solid #dbe4f0;color:#54647a}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:46px}
.footer-brand p{max-width:380px;margin:17px 0 0;color:#748298;font-size:10.5px}
.footer-grid h2{margin:4px 0 14px;color:var(--ink);font-size:11px}
.footer-grid>div:not(.footer-brand) a{display:block;margin:8px 0;color:#6e7d92;font-size:10px}
.footer-grid a:hover{color:var(--red)!important}
.footer-bottom{margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;border-top:1px solid #d9e2ee;color:#8491a4;font-size:9px}
@media(max-width:1020px){
  .hero-grid{grid-template-columns:1fr;gap:42px}.hero-copy{text-align:center}.hero-copy h1,.hero-copy>p{margin-left:auto;margin-right:auto}.hero-points{justify-content:center}.hero-tool{max-width:720px;width:100%;margin-inline:auto}
  .steps-layout,.format-layout,.quality-layout,.guide-layout,.faq-wrap{grid-template-columns:1fr;gap:36px}.section-head.left{max-width:720px;margin-inline:auto;text-align:center}.guide-nav{position:static;display:none}
}
@media(max-width:780px){
  .site-shell{width:min(calc(100% - 28px),var(--shell))}.desktop-nav{display:none}.menu-button{width:40px;height:40px;padding:9px;display:grid;align-content:center;gap:4px;border:1px solid var(--line);border-radius:11px;background:#fff;cursor:pointer}.menu-button span{height:2px;border-radius:4px;background:#42516a}.mobile-nav{display:none;padding-bottom:14px}.mobile-nav.open{display:grid;gap:1px}.mobile-nav a{padding:10px 2px;color:#4e5d75;font-size:12px;font-weight:750}
  .hero-section{padding:52px 0 60px}.hero-copy h1{font-size:clamp(40px,11vw,58px);letter-spacing:-2.3px}.hero-copy>p{font-size:14px}.downloader-card{padding:19px;border-radius:21px}.tool-options{grid-template-columns:1fr}.answer-grid{grid-template-columns:1fr;gap:11px}.content-section{padding:68px 0}.compare-grid,.benefit-grid{grid-template-columns:1fr}.quality-layout{gap:28px}.faq-wrap{gap:18px}.final-cta{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-bottom{flex-direction:column;gap:4px}
}
@media(max-width:480px){
  .brand-copy small{display:none}.brand-icon{width:38px;height:38px;flex-basis:38px}.hero-copy h1{font-size:39px}.hero-points{flex-direction:column;align-items:center}.tool-head h2{font-size:18px}.api-badge{display:none}.url-control{grid-template-columns:auto 1fr}.paste-button{grid-column:1/-1;height:39px;margin:0 7px 7px;justify-content:center}.video-preview{grid-template-columns:94px 1fr}.preview-media img{width:94px}.preview-ok{display:none}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}}