:root{--ink:#16211d;--muted:#68736e;--paper:#f4f2eb;--card:#fffdf8;--line:#d9ddd7;--green:#1f6f50;--green2:#2f8f69;--lime:#dff36a;--danger:#9b3d37;--shadow:0 24px 70px rgba(33,53,44,.12)}
*{box-sizing:border-box}html{background:var(--paper);scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;background:radial-gradient(circle at 85% 8%,rgba(223,243,106,.28),transparent 25rem),linear-gradient(180deg,#f8f7f2 0,#f1efe8 100%);min-height:100vh}.page-shell{width:min(1120px,calc(100% - 40px));margin:auto;min-height:100vh;display:flex;flex-direction:column}.site-header{height:100px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(22,33,29,.12)}.brand{display:flex;align-items:center;gap:12px;color:inherit;text-decoration:none}.brand-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:13px;background:var(--ink);color:var(--lime)}svg{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.brand-mark svg{width:25px}.brand strong{display:block;font-size:18px;letter-spacing:.05em}.brand small{display:block;font-size:9px;letter-spacing:.24em;color:var(--muted);margin-top:2px}.site-nav{display:flex;align-items:center;gap:26px}.site-nav a{color:var(--muted);font-size:13px;text-decoration:none;transition:.2s}.site-nav a:hover{color:var(--green)}main{flex:1}.hero{padding:78px 0 48px;max-width:780px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--green);display:flex;align-items:center;gap:10px;margin-bottom:20px}.eyebrow span{display:grid;place-items:center;width:27px;height:27px;border:1px solid currentColor;border-radius:50%;font-size:10px}.hero h1{font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",sans-serif;font-size:clamp(48px,7vw,86px);line-height:1.08;letter-spacing:-.055em;margin:0;font-weight:900}.hero h1 em,.content-page h1 em{font-style:normal;color:var(--green)}.hero p{font-size:17px;line-height:1.8;color:var(--muted);max-width:670px;margin:28px 0 0}.converter-card{background:var(--card);border:1px solid rgba(22,33,29,.13);border-radius:26px;padding:32px;box-shadow:var(--shadow)}.card-heading{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:24px}.step-label{font-size:10px;letter-spacing:.22em;color:var(--green);font-weight:700}.card-heading h2{font-size:24px;margin:6px 0 0}.formats{font-size:11px;letter-spacing:.12em;color:var(--muted)}.drop-zone{min-height:250px;border:1.5px dashed #9eaaa3;border-radius:19px;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;transition:.2s;background:linear-gradient(135deg,rgba(31,111,80,.025),rgba(223,243,106,.08))}.drop-zone:hover,.drop-zone.dragging{border-color:var(--green);background:rgba(223,243,106,.13);transform:translateY(-2px)}.drop-zone.has-file{border-style:solid;border-color:var(--green2);background:rgba(47,143,105,.06)}.drop-zone input{position:absolute;opacity:0;pointer-events:none}.upload-icon{width:58px;height:58px;border-radius:18px;background:var(--ink);color:var(--lime);display:grid;place-items:center;margin-bottom:19px}.upload-icon svg{width:29px}.drop-zone strong{font-size:19px}.drop-zone>span:last-child{font-size:13px;color:var(--muted);margin-top:8px}.form-row{display:grid;grid-template-columns:1fr 250px;gap:18px;margin-top:20px}.field{display:flex;flex-direction:column;gap:8px}.field>span{font-size:12px;font-weight:700;color:var(--muted)}select{height:56px;padding:0 17px;border:1px solid var(--line);border-radius:13px;background:#fff;font:inherit;color:var(--ink)}.primary-button,.download-button{border:0;border-radius:13px;background:var(--green);color:white;font:600 15px inherit;display:flex;align-items:center;justify-content:center;gap:12px;text-decoration:none;cursor:pointer;transition:.2s}.primary-button:hover,.download-button:hover{background:#185e43;transform:translateY(-1px)}.primary-button:disabled{opacity:.65;cursor:wait}.primary-button svg,.download-button svg{width:22px}.alert{border-left:4px solid var(--danger);padding:13px 16px;background:#fff2ef;color:#742d29;border-radius:8px;margin-bottom:20px}.alert ul{margin:7px 0 0;padding-left:19px}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding:26px 0 70px}.features article{padding:26px 8px}.features article>span{font-size:11px;color:var(--green);font-weight:700}.features h3{font-size:16px;margin:12px 0 8px}.features p{font-size:13px;line-height:1.7;color:var(--muted);margin:0}.seo-content,.faq{padding:64px 0;border-top:1px solid rgba(22,33,29,.12)}.section-heading>span{font-size:10px;letter-spacing:.2em;color:var(--green);font-weight:700}.section-heading h2{font-size:32px;margin:10px 0 30px}.content-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:48px}.content-grid p{font-size:15px;line-height:1.9;color:var(--muted);margin:0}.faq{padding-bottom:80px}.faq-list{display:grid;gap:12px}.faq details{background:var(--card);border:1px solid var(--line);border-radius:15px;padding:0 20px}.faq summary{cursor:pointer;font-weight:700;padding:19px 0}.faq details p{color:var(--muted);line-height:1.8;margin:0;padding:0 0 20px}.content-page{max-width:850px;margin:0 auto;padding:78px 0 100px}.content-page>h1{font-size:clamp(48px,7vw,78px);line-height:1.1;letter-spacing:-.05em;margin:0}.content-page .lead{font-size:18px;line-height:1.9;color:var(--muted);margin:30px 0 65px;max-width:760px}.content-page section{padding:38px 0;border-top:1px solid var(--line)}.content-page h2{font-size:25px;margin:0 0 18px}.content-page section>p{color:var(--muted);line-height:1.9;margin:0}.values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.values-grid>div{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px}.values-grid strong{font-size:17px}.values-grid p{font-size:13px;color:var(--muted);line-height:1.7;margin:10px 0 0}.text-cta{display:inline-block;color:var(--green);font-weight:700;text-decoration:none;margin-top:30px}.legal-page>h1{font-size:56px}.updated-at{font-size:12px;color:var(--muted);margin-top:28px}footer{border-top:1px solid rgba(22,33,29,.12);padding:24px 0 34px;color:var(--muted);font-size:12px;text-align:center}.footer-links{display:flex;justify-content:center;gap:18px;margin-top:9px}.footer-links a{color:var(--muted);text-decoration:none}.footer-links a:hover{color:var(--green)}.result-wrap{max-width:760px;margin:0 auto;padding:44px 0 80px}.back-link{display:inline-block;margin-bottom:24px;color:var(--green);text-decoration:none;font-size:13px}.result-card{background:var(--card);border:1px solid rgba(22,33,29,.13);border-radius:28px;padding:52px;box-shadow:var(--shadow);text-align:center}.status-orbit{width:92px;height:92px;border-radius:50%;position:relative;margin:0 auto 28px;border:1px solid rgba(31,111,80,.18);display:grid;place-items:center}.status-orbit>span{position:absolute;border:1px solid rgba(31,111,80,.09);border-radius:50%}.status-orbit>span:nth-child(1){inset:-8px}.status-orbit>span:nth-child(2){inset:8px}.status-orbit>span:nth-child(3){width:8px;height:8px;background:var(--lime);border:0;right:3px;top:9px}.status-orbit div{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;background:var(--green);color:white;font-size:25px}.centered{justify-content:center}.result-card h1{font-size:37px;margin:0 0 12px}.status-copy{color:var(--muted);margin:0 auto 30px;line-height:1.7}.file-ticket{display:grid;grid-template-columns:54px 1fr auto;align-items:center;gap:15px;padding:16px;border:1px solid var(--line);border-radius:15px;text-align:left;background:#fff}.file-type{height:48px;border-radius:10px;background:#eef3ef;display:grid;place-items:center;color:var(--green);font-size:10px;font-weight:800}.file-meta{min-width:0}.file-meta strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}.file-meta span{font-size:11px;color:var(--muted)}.ticket-status{font-size:11px;color:var(--green);font-weight:700}.progress-block{margin:27px 0}.progress-label{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-bottom:8px}.progress-track{height:8px;background:#e9ece8;border-radius:10px;overflow:hidden}.progress-track span{height:100%;display:block;background:linear-gradient(90deg,var(--green),var(--lime));border-radius:10px;transition:width .35s}.error-panel{text-align:left;padding:15px;background:#fff2ef;color:#742d29;border-radius:10px;margin:24px 0;font-size:13px}.error-panel p{white-space:pre-wrap;word-break:break-word;margin:6px 0 0}.download-button{height:58px;margin-top:28px}.expiry{font-size:11px;color:var(--muted);margin:15px 0 0}[hidden]{display:none!important}
@media(max-width:720px){.page-shell{width:min(100% - 24px,1120px)}.site-header{height:78px}.site-nav{gap:13px}.site-nav a{font-size:12px}.site-nav a:first-child{display:none}.hero{padding:50px 3px 34px}.hero h1{font-size:45px}.hero p{font-size:15px}.converter-card{padding:19px;border-radius:20px}.card-heading{align-items:flex-start}.formats{display:none}.drop-zone{min-height:215px}.form-row{grid-template-columns:1fr}.primary-button{height:56px}.features{grid-template-columns:1fr;gap:0;padding-bottom:40px}.features article{padding:20px 8px;border-bottom:1px solid var(--line)}.seo-content,.faq{padding:45px 3px}.section-heading h2{font-size:26px}.content-grid,.values-grid{grid-template-columns:1fr;gap:14px}.content-page{padding:52px 3px 70px}.content-page>h1,.legal-page>h1{font-size:45px}.content-page .lead{font-size:16px;margin-bottom:45px}.result-wrap{padding-top:25px}.result-card{padding:36px 20px}.result-card h1{font-size:30px}.file-ticket{grid-template-columns:48px 1fr}.ticket-status{grid-column:2}.expiry{line-height:1.5}}

/* Strategy selector */
.field>label{font-size:12px;font-weight:700;color:var(--muted)}
.form-row>.primary-button{height:60px;align-self:end}
.strategy-select{position:relative;width:100%}
.native-select{width:100%;height:60px;padding:0 17px;border:1px solid #cfd6d1;border-radius:13px;background:#fff;color:var(--ink);font:600 14px inherit}
.strategy-select.is-enhanced .native-select{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.strategy-trigger{width:100%;height:60px;padding:0 15px;border:1px solid #cfd6d1;border-radius:14px;background:linear-gradient(180deg,#fff 0%,#fbfcfa 100%);box-shadow:0 1px 2px rgba(22,33,29,.03),inset 0 1px 0 rgba(255,255,255,.9);display:flex;align-items:center;gap:12px;color:var(--ink);font-family:inherit;text-align:left;cursor:pointer;transition:border-color .2s,box-shadow .2s,background .2s}
.strategy-trigger:hover{border-color:#9caf9f;background:#fff}
.strategy-trigger:focus-visible,.strategy-select.is-open .strategy-trigger{outline:none;border-color:var(--green2);box-shadow:0 0 0 4px rgba(47,143,105,.12),0 6px 18px rgba(31,111,80,.08);background:#fff}
.strategy-icon{width:22px;flex:0 0 auto;color:var(--green)}
.strategy-current{display:flex;flex:1;min-width:0;flex-direction:column;gap:2px}
.strategy-current strong{font-size:14px;line-height:1.2}
.strategy-current small{overflow:hidden;color:var(--muted);font-size:10px;font-weight:500;line-height:1.3;text-overflow:ellipsis;white-space:nowrap}
.strategy-chevron{width:18px;flex:0 0 auto;color:#75817b;transition:transform .2s,color .2s}
.strategy-select.is-open .strategy-chevron{color:var(--green);transform:rotate(180deg)}
.strategy-menu{position:absolute;z-index:50;top:calc(100% + 9px);left:0;width:100%;max-height:min(390px,55vh);padding:7px;overflow:auto;border:1px solid rgba(22,33,29,.14);border-radius:16px;background:rgba(255,255,252,.98);box-shadow:0 22px 55px rgba(22,33,29,.18),0 3px 10px rgba(22,33,29,.08);backdrop-filter:blur(14px);animation:strategy-menu-in .16s ease-out}
.strategy-option{width:100%;padding:11px 12px;border:0;border-radius:11px;background:transparent;display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--ink);font-family:inherit;text-align:left;cursor:pointer;transition:background .15s,color .15s}
.strategy-option:hover,.strategy-option:focus-visible{outline:none;background:#f0f5ef}
.strategy-option.is-selected{background:rgba(223,243,106,.28)}
.strategy-option>span:first-child{display:flex;min-width:0;flex-direction:column;gap:3px}
.strategy-option strong{font-size:13px;line-height:1.35}
.strategy-option small{color:var(--muted);font-size:10px;line-height:1.35}
.option-side{display:flex;flex:0 0 auto;align-items:center;gap:9px}
.option-side em{padding:3px 7px;border-radius:20px;background:var(--ink);color:var(--lime);font-size:9px;font-style:normal;font-weight:700;letter-spacing:.08em}
.option-side i{width:19px;height:19px;border-radius:50%;display:grid;place-items:center;color:transparent;font-size:11px;font-style:normal;font-weight:800}
.strategy-option.is-selected .option-side i{background:var(--green);color:#fff}
@keyframes strategy-menu-in{from{opacity:0;transform:translateY(-5px) scale(.985)}to{opacity:1;transform:none}}
@media(max-width:720px){.strategy-trigger{height:62px}.strategy-menu{max-height:48vh}.strategy-option{padding:12px 11px}}