/* UsTube downloader. Components/typography = Ailab Studio's (myleadgo resources/css/studio.css);
   colours = the UsTube logo, as specified in MyStartups/ustube/design/tokens.css — keep them in step. */
:root{
  --bg:#030814;--surface:#0a1222;--surface-2:#0f1a2e;--surface-3:#16233b;
  --line:rgba(160,200,255,.08);--line-2:rgba(160,200,255,.15);
  --text:#eef2f8;--muted:#93a1b8;--faint:#5f6d85;
  --accent:#0f7cec;--accent-2:#19b2ff;--accent-3:#3d5afe;--peach:#8fd4ff;
  --grad:linear-gradient(100deg,#19b2ff 0%,#0f7cec 52%,#3d5afe 100%);
  --ok:#34d399;--warn:#fbbf24;--bad:#f87171;
  --radius:16px;
  --display:'Space Grotesk',Inter,ui-sans-serif,system-ui;
  --body:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:400 15px/1.55 var(--body);-webkit-font-smoothing:antialiased;min-height:100vh;position:relative}
img{max-width:100%;display:block}
a{color:var(--peach)}
code{font:500 .86em ui-monospace,SFMono-Regular,Menlo,monospace;background:rgba(255,255,255,.06);border:1px solid var(--line);padding:.1em .4em;border-radius:6px;color:var(--text)}
h1,h2,h3{margin:0}
button{font:inherit;cursor:pointer}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:#fff;color:#000;padding:8px 12px;border-radius:8px;z-index:99}.skip:focus{left:8px}
.ico{width:18px;height:18px;flex-shrink:0}
svg.bi{width:16px;height:16px;fill:currentColor;flex-shrink:0}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.glow{position:fixed;inset:-20vh -10vw auto -10vw;height:70vh;pointer-events:none;z-index:0;background:
  radial-gradient(40% 50% at 18% 20%,rgba(25,178,255,.10),transparent 70%),
  radial-gradient(38% 46% at 82% 8%,rgba(61,90,254,.12),transparent 70%)}
main,.foot{position:relative;z-index:1}

/* ---------- buttons & chips (Studio .vs-btn / .vs-chip) ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;border-radius:12px;font-weight:600;font-size:14.5px;border:1px solid transparent;text-decoration:none;white-space:nowrap;transition:transform .12s,background .15s,border-color .15s,opacity .15s,box-shadow .2s;font-family:inherit;color:var(--text)}
.btn:active{transform:translateY(1px)}
.btn:disabled,.btn[disabled]{opacity:.55;cursor:progress}
.btn-white{background:#fff;color:#0b0c10}.btn-white:hover{background:#eceef3}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 10px 30px -10px rgba(15,124,236,.7)}
.btn-grad:hover{box-shadow:0 14px 38px -10px rgba(15,124,236,.9)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line-2)}.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-lg{padding:14px 22px;font-size:15.5px;border-radius:14px}
.btn-sm{padding:7px 12px;font-size:13px;border-radius:10px}
.btn .ico{width:17px;height:17px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;border:1px solid var(--line-2);background:rgba(255,255,255,.025);color:var(--muted);font-size:13px;font-weight:500;transition:all .15s;font-family:inherit}
.chip:hover{color:var(--text);border-color:rgba(255,255,255,.22)}
.chip[aria-pressed="true"]{color:#fff;border-color:rgba(25,178,255,.7);background:rgba(25,178,255,.12)}
.select{appearance:none;-webkit-appearance:none;font:500 13px var(--body);color:var(--text);background-color:rgba(255,255,255,.035);border:1px solid var(--line-2);border-radius:999px;padding:6px 32px 6px 12px;background-image:linear-gradient(45deg,transparent 50%,#9aa0b1 50%),linear-gradient(135deg,#9aa0b1 50%,transparent 50%);background-position:calc(100% - 16px) 50%,calc(100% - 11px) 50%;background-size:5px 5px;background-repeat:no-repeat;outline:none}
.select option{background:#0f1a2e}
.select:focus{border-color:rgba(25,178,255,.65)}

/* ---------- top bar (Studio .pub-top) ---------- */
.top{position:sticky;top:0;z-index:40;background:rgba(3,8,20,.66);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);border-bottom:1px solid var(--line)}
.top-in{max-width:1180px;margin:0 auto;padding:0 20px;height:64px;display:flex;align-items:center;gap:32px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text)}
.mark{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:var(--grad);color:#fff;box-shadow:0 6px 20px -6px rgba(15,124,236,.6)}
.mark .ico{width:16px;height:16px}
.mark-sm{width:26px;height:26px;border-radius:8px}.mark-sm .ico{width:14px;height:14px}
.mark-img{width:30px;height:30px;display:block;object-fit:contain;flex:none;filter:drop-shadow(0 6px 16px rgba(15,124,236,.45))}.mark-img-sm{width:26px;height:26px}
.name{font-family:var(--display);font-size:17px;letter-spacing:-.01em;font-weight:500;white-space:nowrap}
.name b{font-weight:700;background:linear-gradient(180deg,#fff 0%,#d9dee5 50%,#9aa6b8 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav{display:flex;gap:26px}
.nav a{color:var(--muted);font-size:14px;font-weight:500;text-decoration:none}
.nav a:hover{color:var(--text)}
.top-right{margin-left:auto;display:flex;align-items:center;gap:16px}
.top-support{display:inline-flex;align-items:center;gap:6px;color:var(--text);font-size:14px;font-weight:500;text-decoration:none}
.top-support .ico{width:15px;height:15px;color:#ff6b9a}

/* ---------- hero (Studio .ln-hero) ---------- */
.hero{max-width:900px;margin:0 auto;padding:80px 20px 36px;text-align:center}
.crumbs{display:flex;justify-content:center;gap:8px;font-size:13px;color:var(--faint);margin-bottom:18px}
.crumbs a{color:var(--muted);text-decoration:none}.crumbs a:hover{color:var(--text)}
.pill{display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;color:#9fdcff;background:rgba(25,178,255,.1);border:1px solid rgba(25,178,255,.3)}
.pill .ico{width:14px;height:14px}
.hero h1{margin-top:24px;font-family:var(--display);font-size:clamp(38px,6vw,70px);line-height:1.03;letter-spacing:-.04em;font-weight:700}
.hero h1 span{display:block;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{margin:20px auto 0;max-width:640px;color:var(--muted);font-size:clamp(16px,1.6vw,18px);line-height:1.6}
.hero-slim{padding:70px 20px 10px}
.hero-slim h1{font-size:clamp(32px,4.4vw,48px)}

/* the link box (Studio .ln-box) */
.box{margin:36px auto 0;max-width:760px;padding:8px;border-radius:20px;background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.025));border:1px solid var(--line-2);box-shadow:0 40px 100px -40px rgba(15,124,236,.45),0 0 0 1px rgba(255,255,255,.02) inset;text-align:left}
.box-row{display:flex;align-items:center;gap:10px;padding:8px 8px 8px 16px;border-radius:14px;transition:background .15s,box-shadow .15s}
.box-row:focus-within{background:rgba(255,255,255,.03);box-shadow:0 0 0 1px rgba(25,178,255,.45)}
.box-row>.ico{color:var(--faint);width:19px;height:19px}
.box-row input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:var(--text);font:400 17.5px var(--body);height:48px}
.box-row input::placeholder{color:var(--faint)}
.paste{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line-2);background:rgba(255,255,255,.04);color:var(--text);font-weight:600;font-size:13.5px;padding:8px 12px;border-radius:10px;white-space:nowrap}
.paste .ico{width:15px;height:15px;color:var(--peach)}
.paste:hover{background:rgba(255,255,255,.08)}
.box-foot{display:flex;align-items:center;gap:10px;padding:6px 6px 4px 12px}
.opts{flex:1;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.seg{display:inline-flex;gap:6px}
.quality[hidden]{display:none}
.go{padding:12px 22px;font-size:15px}
.go .ico{width:18px;height:18px}

.sites{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 16px;margin:20px auto 0;max-width:760px;font-size:13px;color:var(--faint)}
.site{display:inline-flex;align-items:center;gap:6px;color:var(--muted);text-decoration:none}
a.site:hover{color:var(--text)}
.site svg.bi{width:14px;height:14px}
.site svg.bi[style*=currentColor]{color:var(--text)!important}
.site.more{color:var(--faint)}
.studio-line{display:inline-flex;align-items:center;gap:7px;margin-top:16px;font-size:13.5px;font-weight:600;color:var(--peach);text-decoration:none}
.studio-line:hover{color:#c2e9ff}
.studio-line .ico{width:15px;height:15px}

/* ---------- result card ---------- */
.result{max-width:760px;margin:14px auto 0;text-align:left}
.res{display:flex;gap:14px;align-items:flex-start;padding:14px;border-radius:var(--radius);background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.02));border:1px solid var(--line-2);animation:pop .25s ease-out}
@keyframes pop{from{opacity:0;transform:translateY(6px)}}
.res.ready{border-color:rgba(52,211,153,.35)}
.res.error{border-color:rgba(248,113,113,.35)}
.res-thumb{position:relative;width:92px;height:92px;border-radius:12px;overflow:hidden;background:var(--surface-3);flex-shrink:0;display:grid;place-items:center}
.res-thumb img{width:100%;height:100%;object-fit:cover}
.res-thumb .ph{width:30px;height:30px;color:var(--faint)}
.res-thumb .spin{position:absolute;inset:0;display:grid;place-items:center;background:rgba(3,8,20,.45)}
.res-thumb .spin::after{content:"";width:26px;height:26px;border-radius:50%;border:3px solid rgba(255,255,255,.25);border-top-color:#fff;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.res-thumb .state{position:absolute;right:6px;bottom:6px;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;color:#07080b;font-weight:800}
.res-thumb .state.ok{background:var(--ok)}.res-thumb .state.bad{background:var(--bad)}
.res-thumb .state .ico{width:14px;height:14px}
.res-body{flex:1;min-width:0}
.res-plat{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.res-plat svg.bi{width:13px;height:13px}
.res-title{font-weight:600;font-size:15px;line-height:1.35;margin:3px 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;word-break:break-word}
.res-status{font-size:13.5px;color:var(--muted)}
.res-status b{color:var(--text);font-weight:600}
.res.error .res-status{color:var(--bad)}
.bar{height:6px;background:rgba(255,255,255,.06);border-radius:999px;margin:10px 0 2px;overflow:hidden}
.bar i{display:block;height:100%;width:0;background:var(--grad);border-radius:999px;transition:width .5s ease;position:relative;overflow:hidden}
.bar.indet i{width:35%!important;animation:indet 1.2s ease-in-out infinite}
@keyframes indet{from{transform:translateX(-100%)}to{transform:translateX(300%)}}
.bar i::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);animation:shine 1.4s linear infinite}
@keyframes shine{from{transform:translateX(-100%)}to{transform:translateX(100%)}}
.res.ready .bar,.res.error .bar{display:none}
.res-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.note{margin-top:10px;font-size:13px;color:var(--muted);background:rgba(255,255,255,.035);border:1px solid var(--line);border-radius:12px;padding:9px 12px}
.note b{color:var(--text);font-weight:600}
.note a{color:var(--peach);font-weight:600;text-decoration:none}

/* ---------- sections (Studio .ln-section / .ln-head) ---------- */
.section{max-width:1180px;margin:0 auto;padding:96px 20px 0}
.section-tight{padding-top:30px}
.head{text-align:center;max-width:680px;margin:0 auto 44px}
.eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.eyebrow .ico{width:14px;height:14px}
.head h2,.studio-x h2,.support h2{margin-top:12px;font-family:var(--display);font-size:clamp(28px,3.6vw,42px);line-height:1.1;letter-spacing:-.03em;font-weight:700}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step{position:relative;padding:24px 22px;background:linear-gradient(180deg,rgba(255,255,255,.028),rgba(255,255,255,.012));border:1px solid var(--line);border-radius:var(--radius)}
.step-n{position:absolute;top:16px;right:20px;font-family:var(--display);font-size:40px;font-weight:700;color:rgba(255,255,255,.05);line-height:1}
.step-icon{width:22px;height:22px;color:var(--peach)}
.step h3{margin-top:18px;font-weight:600;font-size:16.5px}
.step p{margin:8px 0 0;color:var(--muted);font-size:14px;line-height:1.55}
.step p b{color:var(--text);font-weight:600}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:20px;overflow:hidden}
.feature{background:var(--bg);padding:30px 28px}
.f-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(25,178,255,.1);color:var(--peach)}
.f-icon .ico{width:20px;height:20px}
.f-title{margin-top:18px;font-weight:600;font-size:16.5px}
.feature p{margin:8px 0 0;color:var(--muted);font-size:14px;line-height:1.6}
.article{max-width:760px;margin:0 auto}
.article h2{font-family:var(--display);font-size:clamp(22px,2.6vw,28px);letter-spacing:-.02em;font-weight:700;margin:34px 0 12px;line-height:1.2}
.article h2:first-child{margin-top:0}
.article p,.article li{font-size:16px;line-height:1.75;color:var(--muted)}
.article p{margin:0 0 14px}
.article b{color:var(--text);font-weight:600}
.article a{color:var(--peach);text-decoration:none;font-weight:500}.article a:hover{text-decoration:underline}
.article ul{padding-left:22px}
.site-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.site-card{display:flex;flex-direction:column;gap:4px;padding:18px;border-radius:var(--radius);text-decoration:none;color:var(--text);background:linear-gradient(180deg,rgba(255,255,255,.028),rgba(255,255,255,.012));border:1px solid var(--line);transition:transform .15s,border-color .15s,background .15s}
.site-card:hover{transform:translateY(-2px);border-color:rgba(25,178,255,.45);background:linear-gradient(180deg,rgba(25,178,255,.06),rgba(61,90,254,.03))}
.site-card svg.bi{width:24px;height:24px;margin-bottom:8px}
.site-card svg.bi[style*=currentColor]{color:var(--text)!important}
.site-card b{font-weight:600;font-size:15px}
.site-card small{color:var(--muted);font-size:13px;line-height:1.5}

/* cross-sell to Studio */
.studio-x{display:grid;grid-template-columns:1.4fr 1fr;gap:30px;align-items:center;padding:44px;border-radius:28px;background:radial-gradient(90% 140% at 0% 0%,rgba(25,178,255,.16),transparent 60%),radial-gradient(80% 120% at 100% 100%,rgba(61,90,254,.16),transparent 60%),linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));border:1px solid var(--line-2)}
.sx-eyebrow{color:#9fdcff}
.studio-x p{margin:14px 0 0;color:var(--muted);font-size:15.5px;line-height:1.6}
.sx-act{display:flex;flex-direction:column;align-items:center;gap:12px}
.sx-note{font-size:13px;color:var(--faint)}

/* FAQ (Studio .ln-faq) */
.faq{max-width:760px;margin:0 auto}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 4px;font-size:16px;font-weight:600}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:9px;height:9px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg) translateY(-3px);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(-135deg) translateY(-2px)}
.faq details>div{padding:0 4px 22px;color:var(--muted);font-size:14.5px;line-height:1.65}
.faq details>div b{color:var(--text);font-weight:600}
.faq details>div a{color:var(--peach);text-decoration:none}

/* support (Studio .ln-cta) */
.support{max-width:980px;margin:0 auto;display:grid;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center;padding:48px 44px;border-radius:28px;background:radial-gradient(90% 120% at 50% 0%,rgba(25,178,255,.16),transparent 70%),linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));border:1px solid var(--line-2)}
.support .eyebrow .ico{color:#ff6b9a}
.support p{margin:14px 0 0;color:var(--muted);font-size:15.5px;line-height:1.6}
.donate{background:rgba(255,255,255,.03);border:1px solid var(--line-2);border-radius:20px;padding:16px}
.amounts{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:10px}
.amounts button{border:1px solid var(--line-2);background:rgba(255,255,255,.025);color:var(--text);font-family:var(--display);font-weight:700;font-size:18px;padding:11px 0;border-radius:12px;transition:all .15s}
.amounts button:hover{border-color:rgba(255,255,255,.22)}
.amounts button.on{border-color:rgba(25,178,255,.7);background:rgba(25,178,255,.12);color:#fff}
.other{grid-column:1/-1;display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.035);border:1px solid var(--line-2);border-radius:12px;padding:0 14px;color:var(--muted);font-weight:600}
.other:focus-within{border-color:rgba(25,178,255,.65);box-shadow:0 0 0 4px rgba(25,178,255,.12)}
.other input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:var(--text);font:500 15px var(--body);height:44px}
.other input::placeholder{color:var(--faint)}
.donate-go{width:100%}
.donate-go .ico{color:#fff}
.fine{display:flex;align-items:center;justify-content:center;gap:6px;flex-wrap:wrap;margin:12px 0 0!important;font-size:12px!important;color:var(--faint)!important;text-align:center}
.fine .ico{width:13px;height:13px}
.donate-off{display:none}
body[data-donate="0"] .donate{display:none}
body[data-donate="0"] .donate-off{display:block;color:var(--text);font-weight:600}

/* footer (Studio .pub-foot) */
.foot{border-top:1px solid var(--line);margin-top:110px}
.foot-in{max-width:1180px;margin:0 auto;padding:36px 20px 0;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.foot-brand p{margin:10px 0 0;color:var(--faint);font-size:13px;max-width:420px}
.foot-brand p a{color:var(--muted)}
.foot-links{display:flex;gap:22px;flex-wrap:wrap}
.foot-links a,.foot-tools a{color:var(--muted);font-size:13.5px;text-decoration:none}
.foot-links a:hover,.foot-tools a:hover{color:var(--text)}
.foot-tools{justify-content:flex-start;gap:8px 18px;padding-top:26px}
.foot-tools span{color:var(--faint);font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;width:100%}
.foot-legal{display:block;padding:26px 20px 44px;color:var(--faint);font-size:12.5px}
.foot-legal p{margin:4px 0}

/* ---------- share sheet ---------- */
.sheet{border:1px solid var(--line-2);padding:20px;border-radius:22px;width:min(440px,94vw);background:var(--surface-2);color:var(--text);box-shadow:0 24px 60px -12px rgba(0,0,0,.7)}
.sheet::backdrop{background:rgba(3,4,6,.6);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.sheet[open]{animation:sheetin .22s cubic-bezier(.2,.9,.3,1.15)}
@keyframes sheetin{from{opacity:0;transform:translateY(18px) scale(.98)}}
.sheet-grab{display:none}
.sheet-head{display:flex;gap:12px;align-items:flex-start;margin-bottom:16px}
.sheet-head .ok{width:40px;height:40px;border-radius:50%;background:rgba(52,211,153,.12);color:var(--ok);display:grid;place-items:center;flex-shrink:0}
.sheet-head h2{font-family:var(--display);font-size:20px;letter-spacing:-.02em;font-weight:700;margin-top:1px}
.sheet-head p{margin:3px 0 0;color:var(--muted);font-size:14px}
.sheet .x{margin-left:auto;border:1px solid var(--line-2);background:rgba(255,255,255,.04);color:var(--muted);width:34px;height:34px;border-radius:50%;font-size:20px;line-height:1;flex-shrink:0}
.share-main{width:100%;margin-bottom:14px}
.share-main[hidden]{display:none}
.share-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:4px}
.share-grid a,.share-grid button{display:flex;flex-direction:column;align-items:center;gap:6px;border:0;background:transparent;color:var(--muted);text-decoration:none;font-size:12px;font-weight:500;padding:6px 0;border-radius:12px}
.share-grid a:hover,.share-grid button:hover{background:rgba(255,255,255,.05);color:var(--text)}
.share-grid svg{width:44px;height:44px;padding:12px;border-radius:50%;color:#fff;fill:#fff}
[data-net=whatsapp] svg{background:#25d366}[data-net=facebook] svg{background:#0866ff}[data-net=x] svg{background:#000;border:1px solid var(--line-2)}[data-net=telegram] svg{background:#26a5e4}[data-net=copy] svg{background:var(--surface-3);fill:none;border:1px solid var(--line-2)}
.sheet-studio{display:flex;align-items:center;gap:10px;margin-top:14px;padding:12px 14px;border-radius:14px;text-decoration:none;color:var(--text);font-size:13.5px;background:linear-gradient(100deg,rgba(25,178,255,.1),rgba(61,90,254,.1));border:1px solid rgba(25,178,255,.25)}
.sheet-studio span{flex:1}.sheet-studio b{font-weight:600}
.sheet-studio .ico{color:var(--peach);width:16px;height:16px}
.sheet-foot{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:13px}
.skipask{display:flex;align-items:center;gap:6px;color:var(--muted)}
.love{display:inline-flex;align-items:center;gap:5px;font-weight:600;text-decoration:none;color:var(--peach)}
.love .ico{width:14px;height:14px;color:#ff6b9a}

.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);z-index:80;padding:12px 18px;border-radius:12px;background:#16a34a;color:#fff;font-weight:600;font-size:14px;box-shadow:0 18px 40px -10px rgba(0,0,0,.6);max-width:calc(100vw - 32px)}
.toast.err{background:#b91c1c}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .features{grid-template-columns:1fr 1fr}
  .studio-x,.support{grid-template-columns:1fr;padding:32px 24px}
  .sx-act{align-items:stretch}.sx-note{text-align:center}
}
@media (max-width:760px){
  .nav{display:none}
  .top-in{gap:12px;padding:0 16px}
  .top-right{gap:12px}
  .hero{padding:44px 16px 24px}
  .box-foot{flex-direction:column;align-items:stretch;padding:6px}
  .opts{justify-content:center}
  .go{width:100%;padding:14px}
  .steps{grid-template-columns:1fr}
  .section{padding:72px 16px 0}
  .site-grid{grid-template-columns:repeat(2,1fr);gap:10px}.site-card{padding:14px}.site-card small{font-size:12.5px}
  .foot{margin-top:80px}
  .sheet{margin:auto 0 0;width:100%;max-width:100%;border-radius:22px 22px 0 0;padding:14px 18px calc(18px + env(safe-area-inset-bottom))}
  .sheet-grab{display:block;width:44px;height:5px;border-radius:9px;background:var(--line-2);margin:0 auto 12px}
  .sheet[open]{animation:sheetup .26s cubic-bezier(.2,.9,.3,1)}
  @keyframes sheetup{from{transform:translateY(100%)}}
}
@media (max-width:560px){
  .features{grid-template-columns:1fr}
  .feature{padding:22px 20px}
  .top-support span{display:none}
  .box-row{padding:6px 6px 6px 12px}
  .box-row input{font-size:16px}
  .paste span{display:none}
  .res-thumb{width:72px;height:72px}
}
@media (max-width:380px){.top .btn-white span{display:none}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}