:root{--pri: #4b6bff;--pri-hover: #5f7cff;--pri-active: #3f5de6;--ink: #111827;--mut: #5f6b7d;--subtle: #8d96aa;--line: #e4e7ed;--card: #ffffff;--field: #ffffff;--field-line: #dcdfe6;--sunk: #f4f5f7;--ground: #f5f6f8;--ok: #1f8a4c;--err: #c0392b;--warn: #92400e;--e-out: cubic-bezier(.19, 1, .22, 1);--e-state: cubic-bezier(.2, .8, .2, 1);--card-shadow: 0 0 0 1px rgba(15, 23, 42, .04), 0 1px 2px rgba(15, 23, 42, .04), 0 24px 48px -24px rgba(15, 23, 42, .18)}*{box-sizing:border-box}[hidden]{display:none!important}html{background:var(--ground)}body{margin:0;min-height:100vh;font:15px/1.6 -apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Roboto,Helvetica Neue,PingFang SC,Microsoft YaHei,sans-serif;background:radial-gradient(900px 460px at 50% -160px,#4b6bff1c,#4b6bff00 70%),var(--ground);color:var(--ink);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}.wrap{max-width:640px;margin:0 auto;padding:28px 20px 56px;min-height:100vh;display:flex;flex-direction:column}.wrap-narrow{max-width:640px}.wrap-narrow .langbar{position:fixed;top:20px;inset-inline-end:24px;z-index:30;margin:0}.wrap-narrow .card-pad{margin:auto 0}.hero h1,h1{font-size:28px;line-height:1.25;font-weight:700;letter-spacing:-.022em;margin:0 0 8px}.card h1{font-size:28px;margin:0 0 8px}h2{font-size:19px;letter-spacing:-.012em;margin:0 0 8px}.sub{color:var(--mut);margin:0 0 24px;font-size:15px;line-height:1.6}.card{background:var(--card);border:0;border-radius:22px;padding:24px;margin:18px 0;box-shadow:var(--card-shadow);animation:rise-in .52s var(--e-out) both}.card-pad{padding:44px 44px 40px}@keyframes rise-in{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}.field{display:block;margin-bottom:16px}.label,label{display:block;font-size:13px;font-weight:500;color:var(--mut);letter-spacing:.005em;margin-bottom:8px}input{width:100%;height:52px;padding:0 16px;border:1px solid transparent;border-radius:13px;background:var(--sunk);color:var(--ink);font:inherit;font-size:15px;transition:background-color .16s var(--e-state),border-color .16s var(--e-state),box-shadow .16s var(--e-state)}input::placeholder{color:var(--subtle)}input:hover{background:#eff0f3}input:focus{outline:0;background:var(--field);border-color:var(--pri);box-shadow:0 0 0 4px #4b6bff24}input#order{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14.5px;letter-spacing:.03em}input#order::placeholder{letter-spacing:.02em}.seg{position:relative;display:grid;grid-template-columns:1fr 1fr;padding:4px;margin-bottom:22px;border-radius:13px;background:var(--sunk)}.seg-thumb{position:absolute;top:4px;bottom:4px;inset-inline-start:4px;width:calc(50% - 4px);border-radius:10px;background:#fff;box-shadow:0 0 0 1px #0f172a0d,0 1px 2px #0f172a0f,0 4px 10px -4px #0f172a29;transition:inset-inline-start .26s var(--e-out)}.seg[data-tab=email] .seg-thumb{inset-inline-start:50%}.seg-btn{position:relative;z-index:1;height:42px;border:0;border-radius:10px;background:none;color:var(--mut);font:inherit;font-size:14px;font-weight:500;cursor:pointer;-webkit-tap-highlight-color:transparent;transition:color .16s var(--e-state)}.seg-btn:hover{color:var(--ink)}.seg-btn[aria-selected=true]{color:var(--ink);font-weight:600}.seg-btn:focus-visible{outline:0;box-shadow:inset 0 0 0 2px #4b6bff66}.panel{animation:rise-in .28s var(--e-out) both}.field-hint{margin:10px 2px 0;font-size:13px;line-height:1.55;color:var(--subtle)}.sent{display:flex;gap:14px;align-items:flex-start;margin-top:16px;padding:16px;border-radius:13px;background:#1f8a4c12;animation:rise-in .36s var(--e-out) both}.sent-icon{flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:#fff;color:var(--ok);box-shadow:0 0 0 1px #1f8a4c1f}.sent-icon svg{width:20px;height:20px}.sent-body{min-width:0}.sent-title{font-weight:600;color:var(--ok);margin-bottom:3px}.sent-text{font-size:14px;line-height:1.55;color:var(--mut);overflow-wrap:anywhere}.sent-text b{color:var(--ink);font-weight:600}.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:11px;height:52px;padding:0 18px;font:inherit;font-weight:600;cursor:pointer;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;transition:background-color .16s var(--e-state),border-color .16s var(--e-state),color .16s var(--e-state),box-shadow .16s var(--e-state),transform .16s var(--e-state),opacity .16s var(--e-state)}.btn:focus-visible{outline:0;box-shadow:0 0 0 4px #4b6bff47}.btn,.btn-ghost{background:var(--sunk);border-color:transparent;color:var(--ink)}.btn:hover,.btn-ghost:hover{background:#4b6bff17;color:var(--pri)}.btn-primary{background:var(--pri);border-color:var(--pri);color:#fff}.btn-primary:hover{background:var(--pri-hover);border-color:var(--pri-hover);color:#fff}.btn-primary:active{background:var(--pri-active);border-color:var(--pri-active)}.btn-dark{background:var(--ink);border-color:var(--ink);color:#fff}.btn-dark:hover{background:#2b3444;border-color:#2b3444;color:#fff}.btn-block{width:100%;margin-top:16px}.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none}.btn[disabled]:hover{background:var(--sunk);border-color:transparent;color:var(--ink)}.btn-primary[disabled]:hover{background:var(--pri);border-color:var(--pri);color:#fff}.codechip{border:1px dashed var(--pri);background:#4b6bff12;border-radius:8px;padding:2px 8px;cursor:pointer;font:inherit;color:var(--pri);transition:background-color .16s var(--e-state)}.codechip:hover{background:#4b6bff24}.alert,.err,.warn,.ok{border-radius:13px;padding:12px 15px;margin-top:16px;font-size:14px;line-height:1.55;animation:msg-in .3s var(--e-out) both}@keyframes msg-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}.alert,.err{background:#fef2f2;color:var(--err);border:1px solid #fadcd9}.warn{background:#fffbeb;color:var(--warn);border:1px solid #fde68a}.ok{background:#f0fbf4;color:var(--ok);border:1px solid #c8ebd6}.result{margin-top:16px}.result-head{font-weight:700;margin-bottom:6px}.code{display:block;word-break:break-all;background:var(--sunk);border:1px solid transparent;color:#2a3140;border-radius:13px;padding:14px 16px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px;line-height:1.8;margin-top:10px;-webkit-user-select:all;user-select:all;animation:rise-in .36s var(--e-out) both}.code::selection{background:#4b6bff2e;color:var(--ink)}.code-strong{font-size:15px;font-weight:600;letter-spacing:.04em;color:var(--ink);line-height:1.6}.code-row{display:flex;gap:8px;align-items:flex-start;margin-top:8px}.hint{font-size:13px;color:var(--mut);margin-top:12px;line-height:1.6}.hint a{color:var(--pri);text-decoration:none;border-bottom:1px solid rgba(75,107,255,.35);transition:border-color .16s var(--e-state)}.hint a:hover{border-bottom-color:var(--pri)}.consent{color:var(--mut);font-size:12px;text-align:center;line-height:1.6;margin:18px 0 0}.consent a{color:var(--pri)}.foot{margin-top:auto;color:var(--subtle);font-size:12px;text-align:center;padding-top:24px}.foot a{color:var(--pri)}.spin{display:inline-block;width:16px;height:16px;border:2px solid rgba(75,107,255,.22);border-top-color:var(--pri);border-radius:50%;animation:r .7s linear infinite;vertical-align:-2px;margin-right:9px}@keyframes r{to{transform:rotate(360deg)}}#state{display:flex;align-items:center;margin-top:16px;border:1px solid transparent;border-radius:13px;background:var(--sunk);padding:13px 16px;color:var(--mut);font-size:14px}#state[data-failed=true]{border:0;background:none;padding:0}#state .err{flex:1;margin-top:0}.toast{position:fixed;left:50%;bottom:32px;background:#16181d;color:#fff;padding:10px 15px;border-radius:12px;font-size:14px;opacity:0;transform:translate(-50%,8px);transition:opacity .2s var(--e-state),transform .26s var(--e-out);pointer-events:none;box-shadow:0 12px 32px -14px #00000080}.toast.show{opacity:1;transform:translate(-50%)}.langbar{display:flex;justify-content:flex-end;margin-bottom:4px}.langsel{position:relative;display:inline-block}.langsel-btn{display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 11px 0 10px;border:1px solid transparent;border-radius:999px;background:#ffffffb8;box-shadow:0 0 0 1px #0f172a0f,0 1px 2px #0f172a0a;color:var(--mut);font:inherit;font-size:13px;font-weight:500;cursor:pointer;-webkit-tap-highlight-color:transparent;transition:background-color .16s var(--e-state),box-shadow .16s var(--e-state),color .16s var(--e-state)}.langsel-btn:hover{background:#fff;color:var(--ink);box-shadow:0 0 0 1px #0f172a1a,0 2px 6px -2px #0f172a1f}.langsel-btn:focus-visible{outline:0;box-shadow:0 0 0 3px #4b6bff47;color:var(--ink)}.langsel[data-open=true] .langsel-btn{background:#fff;color:var(--ink)}.langsel-btn svg{width:15px;height:15px;flex-shrink:0}.langsel-btn .langsel-chev{width:12px;height:12px;color:var(--subtle);transition:transform .2s var(--e-out)}.langsel[data-open=true] .langsel-chev{transform:rotate(180deg)}.langsel-menu{position:absolute;top:calc(100% + 8px);right:0;z-index:40;min-width:188px;max-height:min(60vh,424px);overflow-y:auto;margin:0;padding:6px;list-style:none;background:#ffffffeb;-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-radius:14px;box-shadow:0 0 0 1px #0f172a0f,0 1px 2px #0f172a0a,0 20px 40px -16px #0f172a47;opacity:0;transform:translateY(-6px) scale(.98);transform-origin:top right;transition:opacity .16s var(--e-state),transform .22s var(--e-out);scrollbar-width:thin;scrollbar-color:rgba(148,163,184,.55) transparent}@supports selector(::-webkit-scrollbar){.langsel-menu{scrollbar-width:auto;scrollbar-color:auto}}.langsel-menu::-webkit-scrollbar{width:8px}.langsel-menu::-webkit-scrollbar-track{background:transparent}.langsel-menu::-webkit-scrollbar-thumb{min-height:32px;border:2px solid transparent;border-radius:999px;background:#94a3b88c;background-clip:padding-box}.langsel-menu::-webkit-scrollbar-thumb:hover{background:#6b7280bf;background-clip:padding-box}.langsel-menu::-webkit-scrollbar-button{display:none;width:0;height:0}[dir=rtl] .langsel-menu{right:auto;left:0;transform-origin:top left}.langsel[data-open=true] .langsel-menu{opacity:1;transform:none}.langsel-opt{display:flex;align-items:center;justify-content:space-between;gap:14px;height:36px;padding:0 10px 0 12px;border-radius:9px;color:var(--ink);font-size:14px;white-space:nowrap;cursor:pointer;-webkit-user-select:none;user-select:none;transition:background-color .12s var(--e-state),color .12s var(--e-state)}.langsel-opt:hover,.langsel-opt:focus-visible{background:#4b6bff17;color:var(--pri);outline:0}.langsel-opt[aria-selected=true]{font-weight:600}.langsel-opt svg{width:14px;height:14px;flex-shrink:0;color:var(--pri);opacity:0}.langsel-opt[aria-selected=true] svg{opacity:1}@media(max-width:480px){.wrap{padding:20px 16px 40px}.card{border-radius:20px}.card-pad{padding:28px 22px 24px}input,.btn{height:48px}.wrap-narrow .langbar{top:14px;inset-inline-end:14px}.card h1{font-size:24px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.spin{animation-duration:.7s!important;animation-iteration-count:infinite!important}}