:root{color-scheme:light;--bg:#f6f8fc;--surface:#edf2f9;--ink:#233247;--muted:#596b82;--line:#ccd7e6;--control-line:#758ca8;--accent:#3168aa;--error:#b42335;--success:#177245;--focus:#2e66b0;--primary:#295fa7;--primary-ink:#fff;--primary-hover:#244e87;--hover-soft:#3168aa0d}
:root[data-theme=dark]{color-scheme:dark;--bg:#101722;--surface:#151f2d;--ink:#e1e9f4;--muted:#9aacbf;--line:#344253;--control-line:#597292;--accent:#8fb8ee;--error:#f5a4a9;--success:#83dfab;--focus:#8fb8ee;--primary:#9ac4fa;--primary-ink:#0e223d;--primary-hover:#b4d4fd;--hover-soft:#8fb8ee12}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;min-height:100dvh;background:var(--bg);color:var(--ink);font:14px/1.85 system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif}
button,input,select{font:inherit}
button{cursor:pointer;touch-action:manipulation}
button:disabled{cursor:not-allowed;opacity:.45}
a{color:inherit;text-decoration:none}
.header{max-width:1560px;margin:auto;display:flex;justify-content:space-between;align-items:center;padding:22px clamp(28px,5.7vw,96px)}
.brand{display:flex;align-items:center;gap:12px;font-size:19px;font-weight:550;letter-spacing:.3px}
.brand small{font-size:11px;font-weight:400;color:var(--muted);margin-left:2px}
.brand-icon{width:28px;height:28px;flex-shrink:0}
.icon-button{display:grid;place-items:center;width:40px;height:40px;padding:10px;border:0;border-radius:50%;background:transparent;color:var(--muted)}
.icon-button svg{width:18px;height:18px}
.icon-button:hover{color:var(--accent);background:var(--hover-soft)}
main{max-width:1560px;margin:26px auto 0;padding:0 clamp(28px,5.7vw,96px) 48px;display:grid;grid-template-columns:minmax(300px,.8fr) minmax(0,1.2fr);gap:clamp(60px,8vw,150px);align-items:center;min-height:calc(100dvh - 160px)}
.intro{min-width:0;max-width:380px;align-self:stretch;display:flex;flex-direction:column;justify-content:space-between;gap:60px;padding:0 0 20px}
.eyebrow{font-size:10px;letter-spacing:2px;font-weight:400;color:var(--accent);margin:0 0 16px}
h1{font-size:28px;letter-spacing:.5px;line-height:1.5;font-weight:550;margin:0 0 28px}
h2{font-size:25px;line-height:1.5;font-weight:550;margin:0}
h3{font-size:14px;font-weight:550;margin:0 0 10px}
.guide h2{font-size:13px;font-weight:550;margin:0 0 9px}
.muted,.field-note,.privacy{color:var(--muted)}
.guide>.muted{font-size:11px;line-height:1.9;margin:0}
.instructions{list-style:none;padding:0;margin:22px 0;display:grid;gap:17px;font-size:12px}
.instructions li{display:flex;align-items:baseline;gap:13px}
.instructions b{font-size:10px;color:var(--accent);font-weight:400}
.privacy{font-size:10px;margin:0;line-height:1.9}
.notices h2{font-size:15px;letter-spacing:.5px;color:var(--accent);margin:0 0 16px}
.notices ul{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.notices li{position:relative;padding-left:14px;font-size:12px;line-height:1.95}
.notices li:before{content:"·";position:absolute;left:0;color:var(--accent)}
.notices strong{font-weight:550;color:var(--accent)}
.workspace{min-width:0;width:100%;max-width:610px;margin:auto;padding:34px 0;border:0;border-radius:0;background:transparent;box-shadow:none}
.workspace-top{display:flex;align-items:baseline;justify-content:space-between;gap:16px}
.workspace-top>span:last-child{font-size:10px;text-align:right}
#subtitle{font-size:12px;line-height:1.9;margin:9px 0 0}
.steps{display:flex;flex-wrap:wrap;list-style:none;padding:0;margin:30px 0 24px;font-size:11px;color:var(--muted);gap:12px 28px}
.steps li{display:flex;align-items:baseline;gap:10px;white-space:nowrap;opacity:.55}
.steps span{font-size:10px;color:var(--accent);font-variant-numeric:tabular-nums}
.steps [aria-current=step]{color:var(--ink);opacity:1}
label{display:block;font-size:12px;margin:0 0 12px}
input,select{width:100%;min-width:0;min-height:46px;padding:12px 14px;color:var(--ink);background:var(--surface);border:1px solid var(--control-line);border-radius:7px;outline:none;font-size:12px}
input::placeholder{color:var(--muted);opacity:.7}
input:focus,select:focus{border-color:var(--focus)}
button:focus-visible,a:focus-visible{outline:2px solid var(--focus);outline-offset:4px}
.code-input,.actions{display:flex;gap:12px}
.code-input input{flex:1}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:11px 19px;white-space:nowrap;border:1px solid var(--control-line);border-radius:7px;background:transparent;color:var(--ink);font-size:12px;font-weight:500}
.button:hover:not(:disabled){border-color:var(--accent);background:var(--hover-soft)}
.secondary{background:transparent;color:var(--ink)}
.primary{background:var(--primary);border-color:var(--primary);color:var(--primary-ink)}
.primary:hover:not(:disabled){background:var(--primary-hover);border-color:var(--primary-hover)}
.text-button{background:none;border:0;padding:6px 0;color:var(--accent);font-size:11px;text-align:left}
.text-button:hover:not(:disabled){text-decoration:underline;text-underline-offset:4px}
.field-note{font-size:11px;line-height:1.9;margin:10px 0}
.product-name{padding:0 0 18px;margin:0 0 22px;border-bottom:1px solid var(--line);font-size:16px;font-weight:500;overflow-wrap:anywhere}
#verified .actions{margin-top:24px;flex-wrap:wrap}
#start{color:var(--primary-ink)}
.workspace-footer{margin-top:30px;color:var(--muted);font-size:10px;line-height:1.9}
.receive-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:11px;margin:0 0 20px}
.region-tag{color:var(--accent);overflow-wrap:anywhere}
.number-panel,.otp-panel{padding:18px 0;border-top:1px solid var(--line)}
.number-panel>.muted{font-size:11px}
.copy-row{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:9px}
.copy-row strong{overflow-wrap:anywhere;min-width:0;font-weight:450;font-size:27px;line-height:1.5;letter-spacing:1px;font-variant-numeric:tabular-nums}
.copy-row .button{min-height:36px;padding:7px 12px;font-size:11px;flex-shrink:0}
.otp-panel{margin-top:12px}
.otp-label{display:flex;justify-content:space-between;align-items:baseline;font-size:11px;gap:12px}
.otp-label .text-button{padding:0}
#otp-empty{display:flex;align-items:center;gap:10px;padding:28px 0 12px;font-size:11px;color:var(--muted)}
#otp-empty p{margin:0}
.pulse{display:block;flex-shrink:0;width:12px;height:12px;border:1px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin 1.4s linear infinite}
#otp{font-size:30px;letter-spacing:4px}
#otp-result{color:var(--success)}
#sms-text{font-size:11px;color:var(--muted);white-space:pre-wrap;overflow-wrap:anywhere}
.service-actions{margin:16px 0;display:grid;justify-items:start;gap:5px}
#countdown{font-variant-numeric:tabular-nums}
#unknown{padding:20px 0;border-top:1px solid var(--line);margin-top:20px;font-size:12px}
#unknown p{color:var(--muted);line-height:1.9}
#unknown .button{margin:8px 8px 0 0}
#unknown .text-button{display:block;margin-top:10px}
#error{padding:12px 0;border-top:1px solid var(--line);color:var(--error);font-size:12px;line-height:1.9;overflow-wrap:anywhere}
#notice{font-size:11px;color:var(--muted);line-height:1.9;overflow-wrap:anywhere}
#notice:empty{display:none}
dialog{width:min(420px,calc(100% - 32px));padding:26px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);box-shadow:0 24px 70px #0003}
dialog::backdrop{background:#0008}
dialog h2{font-size:20px}
dialog p{font-size:12px;color:var(--muted);line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere}
dialog .actions{justify-content:flex-end;flex-wrap:wrap;margin-top:24px}
footer{max-width:1560px;margin:auto;padding:16px 28px 24px;text-align:center;font-size:10px;color:var(--muted)}
@keyframes spin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}
@media(min-width:1100px) and (min-height:800px){.intro{padding-top:16px;padding-bottom:28px}.workspace{transform:translateY(20px)}}
@media(max-width:1000px){main{gap:48px;grid-template-columns:minmax(260px,.8fr) minmax(0,1.2fr)}h1{font-size:25px}.steps{gap:10px 18px}.code-input{gap:8px}.button{padding-inline:14px}}
@media(max-width:760px){.header{padding:18px 24px}.brand{font-size:18px}main{display:flex;flex-direction:column;align-items:stretch;gap:28px;max-width:610px;min-height:0;padding:0 24px 24px;margin:20px auto 0}.intro{display:contents}.guide{order:0}.workspace{order:1;padding:10px 0 22px;transform:none}.notices{order:2;padding-top:26px;border-top:1px solid var(--line)}h1{font-size:25px;margin-bottom:22px}h1 br{display:none}.instructions{gap:12px;margin:18px 0}.workspace h2{font-size:23px}.steps{margin-top:26px}.notices ul{gap:10px}.code-input input,select{font-size:16px}.button{min-height:46px}.privacy{font-size:11px}.field-note{font-size:12px}.workspace-footer{font-size:11px}}
@media(max-width:390px){.header{padding-inline:18px}main{padding-inline:18px}.brand small{display:none}.steps{gap:10px 16px;font-size:10px}.steps li{gap:6px}.code-input{flex-wrap:wrap}.code-input .button{width:100%}.copy-row{gap:10px}.copy-row strong{font-size:22px}#otp{font-size:26px}.copy-row .button{padding-inline:9px}}