:root{
  --bg:#f5f5f2;
  --ink:#131313;
  --muted:#727272;
  --card:#fff;
  --line:#e4e4df;
  --purple:#8658ff;
  --pink:#e84c98;
  --orange:#ff8a34;
  --radius:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC",sans-serif;line-height:1.65}
a{color:inherit}
button,input{font:inherit}
.topbar{height:70px;padding:0 max(20px,calc((100vw - 1100px)/2));display:flex;align-items:center;justify-content:space-between;background:rgba(245,245,242,.88);backdrop-filter:blur(12px);position:sticky;top:0;z-index:20;border-bottom:1px solid rgba(0,0,0,.05)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:850;letter-spacing:-.03em}
.brand-mark{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;color:white;background:linear-gradient(135deg,var(--purple),var(--pink),var(--orange));font-size:18px}
.badge{font-size:12px;padding:5px 10px;border:1px solid #d6d6d0;border-radius:999px;color:#606060}
.hero{min-height:650px;display:grid;place-items:center;position:relative;overflow:hidden;padding:72px 20px 56px;background:#111;color:#fff}
.hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 110%,rgba(255,255,255,.10),transparent 45%);pointer-events:none}
.glow{position:absolute;border-radius:999px;filter:blur(95px);opacity:.36;pointer-events:none}
.glow-a{width:400px;height:400px;background:var(--purple);left:-110px;top:70px}
.glow-b{width:430px;height:430px;background:var(--pink);right:-120px;bottom:-40px}
.hero-inner{position:relative;width:min(780px,100%);text-align:center;z-index:2}
.eyebrow{font-size:12px;font-weight:800;letter-spacing:.18em;color:#c7b8ff;margin:0 0 12px}
.eyebrow.dark{color:#6d4ad5}
h1{font-size:clamp(46px,8vw,82px);letter-spacing:-.065em;line-height:.95;margin:0;font-weight:900}
.lead{font-size:clamp(17px,2.1vw,21px);color:#bcbcbc;margin:24px 0 32px}
.download-box{padding:12px;background:#fff;border-radius:22px;display:grid;grid-template-columns:1fr 155px;gap:10px;box-shadow:0 24px 80px rgba(0,0,0,.35);text-align:left}
.input-row{display:flex;align-items:center;min-width:0}
input{width:100%;height:56px;border:0;outline:0;padding:0 12px;color:#111;background:transparent;font-size:16px;min-width:0}
input::placeholder{color:#9a9a9a}
.ghost-btn{border:0;background:#f1f1ee;color:#222;border-radius:12px;padding:9px 12px;cursor:pointer;font-weight:700;white-space:nowrap}
.primary-btn,.download-btn{border:0;border-radius:14px;color:white;font-weight:850;cursor:pointer;background:linear-gradient(135deg,#7254ff,#d94c9b 58%,#f77a34);transition:transform .18s ease,filter .18s ease;text-decoration:none}
.primary-btn{min-height:56px;padding:0 18px;position:relative}
.primary-btn:hover,.download-btn:hover{filter:brightness(1.08);transform:translateY(-1px)}
.hint{grid-column:1/-1;color:#777;font-size:12px;margin:0 4px 2px;text-align:center}
.status{min-height:28px;margin-top:15px;color:#ffb7b7;font-size:14px}
.status.success{color:#b9ffc7}
.spinner{display:none;width:18px;height:18px;border:2px solid rgba(255,255,255,.45);border-top-color:white;border-radius:50%;animation:spin .7s linear infinite;margin:auto}
.primary-btn.loading .spinner{display:block}.primary-btn.loading .btn-text{display:none}
@keyframes spin{to{transform:rotate(360deg)}}
.result-card{margin:24px auto 0;max-width:650px;background:white;border-radius:22px;padding:12px;color:#111;display:grid;grid-template-columns:170px 1fr;gap:18px;text-align:left;box-shadow:0 22px 70px rgba(0,0,0,.25)}
.thumb-wrap{height:170px;border-radius:15px;overflow:hidden;background:#eee;position:relative}
.thumb-wrap img{width:100%;height:100%;object-fit:cover;display:block}
.play-mark{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:46px;height:46px;display:grid;place-items:center;border-radius:50%;background:rgba(0,0,0,.65);color:white;font-size:14px;padding-left:3px}
.result-content{padding:6px 8px 6px 0;display:flex;flex-direction:column;justify-content:center;min-width:0}
.result-label{margin:0;color:#6d4ad5;font-size:12px;font-weight:850;letter-spacing:.12em}
.result-content h2{font-size:19px;line-height:1.35;margin:5px 0 7px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta{font-size:13px;color:#7c7c7c;display:flex;gap:12px;margin-bottom:15px}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:45px;padding:0 18px;width:max-content;max-width:100%}
.ad-slot{height:125px;width:min(970px,calc(100% - 40px));margin:36px auto;border:1px dashed #cfcfc9;border-radius:18px;display:grid;place-items:center;color:#9d9d96;font-size:10px;letter-spacing:.18em;background:#fafaf8}
.content-section{width:min(1100px,calc(100% - 40px));margin:90px auto}
.section-head{text-align:center;margin-bottom:34px}
.section-head h2{font-size:clamp(30px,4vw,46px);letter-spacing:-.045em;line-height:1.05;margin:0}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.steps article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.steps b{font-size:12px;color:#7b5adf;letter-spacing:.12em}.steps h3{font-size:22px;margin:26px 0 8px}.steps p{color:#747474;margin:0}
.faq-section{max-width:850px}
.faq-list{display:grid;gap:10px}
details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 20px}
summary{padding:18px 0;cursor:pointer;font-weight:800;list-style:none;position:relative;padding-right:34px}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";position:absolute;right:2px;top:50%;transform:translateY(-50%);font-size:23px;color:#777}
details[open] summary:after{content:"−"}
details p{color:#707070;margin:0;padding:0 0 18px}
footer{text-align:center;color:#8a8a85;font-size:12px;padding:30px 20px 46px;border-top:1px solid var(--line)}
footer p{margin:3px 0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:720px){
  .topbar{height:62px}.hero{min-height:620px;padding-top:55px}.desktop{display:none}
  .download-box{grid-template-columns:1fr}.primary-btn{width:100%}.hint{text-align:left}
  .steps{grid-template-columns:1fr}.content-section{margin:64px auto}
  .result-card{grid-template-columns:105px 1fr;gap:12px}.thumb-wrap{height:125px}.result-content h2{font-size:16px}.download-btn{width:100%}.meta{margin-bottom:10px}
}
@media(max-width:430px){
  .hero{padding-left:14px;padding-right:14px}.download-box{padding:9px;border-radius:18px}.input-row{background:#f7f7f4;border-radius:12px;padding-right:6px}input{height:52px;padding-left:10px;font-size:15px}
  .result-card{grid-template-columns:1fr}.thumb-wrap{height:220px}.result-content{padding:5px}.download-btn{width:100%}
}
/* Global SEO / language navigation */
.topbar{gap:18px}
.tool-nav{display:flex;align-items:center;gap:16px;margin-left:auto}
.tool-nav a{font-size:13px;font-weight:750;color:#5f5f5a;text-decoration:none}
.tool-nav a:hover{text-decoration:underline}
.header-actions{display:flex;align-items:center;gap:10px}
.lang-menu{position:relative;background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 12px;z-index:30}
.lang-menu>summary{padding:9px 16px 9px 0;font-size:12px;white-space:nowrap}
.lang-menu>summary:after{font-size:16px}
.lang-menu[open] .lang-grid{display:grid}
.lang-grid{display:none;position:absolute;right:0;top:44px;width:min(520px,calc(100vw - 28px));grid-template-columns:repeat(3,1fr);gap:4px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px;box-shadow:0 22px 60px rgba(0,0,0,.16)}
[dir="rtl"] .lang-grid{right:auto;left:0}
.lang-grid a{display:block;padding:10px 12px;border-radius:9px;color:#262624;text-decoration:none;font-size:13px}
.lang-grid a:hover,.lang-grid a[aria-current="page"]{background:#f2f0fb}
.prose-section{max-width:860px}
.prose-lead{font-size:18px;line-height:1.8;text-align:center;color:#63635f;margin:-8px auto 24px;max-width:760px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px 30px}
.feature-card h3{margin-top:0;font-size:21px}
.feature-card ul{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 24px;padding-left:20px;margin-bottom:0;color:#666}
[dir="rtl"] .feature-card ul{padding-left:0;padding-right:20px}
.footer-links{display:flex;justify-content:center;flex-wrap:wrap;gap:18px;margin-bottom:14px}
.footer-links a{color:#5f5f5a;text-decoration:none}.footer-links a:hover{text-decoration:underline}
.legal-page{width:min(760px,calc(100% - 40px));min-height:70vh;margin:0 auto;padding:110px 0 70px}
.legal-page h1{font-size:clamp(38px,7vw,62px);letter-spacing:-.04em}.legal-page p{font-size:17px;line-height:1.8;color:#666}.legal-page .download-btn{margin-top:20px}
[dir="rtl"] body{text-align:right}
[dir="rtl"] .section-head,[dir="rtl"] .hero-inner,[dir="rtl"] footer{text-align:center}
@media(max-width:900px){.tool-nav{display:none}.topbar{padding-left:14px;padding-right:14px}.badge{display:none}.lang-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.brand span:last-child{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lang-grid{grid-template-columns:1fr;width:min(300px,calc(100vw - 28px));max-height:60vh;overflow:auto}.feature-card ul{grid-template-columns:1fr}}