:root{--bg:#f5f6f1;--card:#fff;--ink:#17211b;--muted:#68736d;--line:#dce2dc;--green:#176b4a;--green2:#0d5036;--soft:#dff2e8;--warn:#8a4b08;--warnbg:#fff1d5;--red:#a12b2b;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 10% 0,rgba(79,156,118,.13),transparent 34rem),var(--bg)}a{color:inherit}.top,.shell,.foot{width:min(960px,calc(100% - 32px));margin:auto}.top{display:flex;align-items:baseline;gap:14px;padding:26px 0}.brand{font-size:1.2rem;font-weight:850;text-decoration:none}.tag,.foot,.hint{color:var(--muted);font-size:.88rem}.shell{padding:34px 0}.foot{text-align:center;padding:34px 0}.card{max-width:720px;margin:auto;padding:clamp(26px,5vw,54px);background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:22px;box-shadow:0 18px 50px rgba(23,33,27,.08)}.wide{max-width:none}h1{margin:7px 0 14px;font-size:clamp(2rem,6vw,3.8rem);line-height:1.03;letter-spacing:-.05em;overflow-wrap:anywhere}.eyebrow{margin:0;color:var(--green);font-size:.76rem;font-weight:850;letter-spacing:.15em;text-transform:uppercase}.lead{color:var(--muted);line-height:1.65}.field{margin-top:21px}label{display:block;margin-bottom:8px;font-weight:750}input,textarea{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--ink);font:inherit;outline:0}input:focus,textarea:focus{border-color:var(--green);box-shadow:0 0 0 4px rgba(23,107,74,.12)}textarea{min-height:230px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;line-height:1.65}.editor{min-height:58vh}.row,.actions,.bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.row input{flex:1}.actions,.bar{margin-top:25px}.button{display:inline-flex;min-height:43px;align-items:center;justify-content:center;padding:10px 18px;border:1px solid transparent;border-radius:10px;background:var(--green);color:#fff;font:inherit;font-weight:750;text-decoration:none;cursor:pointer}.button:hover{background:var(--green2)}.button.ghost{background:transparent;color:var(--ink);border-color:var(--line)}.link{padding:0;border:0;background:none;color:var(--green2);font:inherit;font-size:.9rem;font-weight:700;text-decoration:underline;cursor:pointer}.error{display:block;margin-top:7px;color:var(--red);font-size:.88rem}.notice{margin:16px 0;padding:13px 15px;border-radius:10px;line-height:1.5}.success{color:#075236;background:var(--soft)}.warning{color:var(--warn);background:var(--warnbg)}.badge{display:inline-block;padding:6px 10px;border-radius:99px;background:var(--soft);color:var(--green2);font-size:.78rem;font-weight:800;vertical-align:middle}.badge.read{background:#f5e9b9;color:#594716}.content{min-height:40vh;padding:23px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:0 18px 50px rgba(23,33,27,.06);font-family:inherit;line-height:1.7;white-space:pre-wrap;overflow-wrap:anywhere}
.content a{color:var(--green2);text-decoration:underline}
.content .line{display:flex;align-items:flex-start;gap:6px;min-height:1.7em}
.content .line .line-text{white-space:pre-wrap;overflow-wrap:anywhere;flex:1;min-width:0}
.copy-line{display:inline-flex;align-items:center;justify-content:center;width:1.4em;height:1.4em;padding:0;border:0;background:none;color:var(--muted);cursor:pointer;flex-shrink:0;margin-top:.15em;opacity:.55}
.copy-line:hover{color:var(--green2);opacity:1}
.copy-line.copied{color:var(--green2);opacity:1}.divider{margin:28px 0;border:0;border-top:1px solid var(--line)}.spacer{flex:1}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:640px){.tag{display:none}.shell{padding-top:16px}.row{display:block}.row .button{width:100%;margin-top:10px}.card{padding:24px}.spacer{display:none}}
details.password-options{margin-top:21px;border:1px solid var(--line);border-radius:12px;padding:0 16px;background:#fbfcf9}details.password-options summary{cursor:pointer;padding:14px 2px;font-weight:750;color:var(--green2)}details.password-options summary::-webkit-details-marker{color:var(--green)}details.password-options[open] summary{border-bottom:1px solid var(--line);margin-bottom:4px}.h2{margin:7px 0 14px;font-size:1.35rem;line-height:1.2;letter-spacing:-.01em}fieldset.ephemeral{margin-top:21px;border:1px solid var(--line);border-radius:12px;padding:14px 16px 6px;background:#fbfcf9}fieldset.ephemeral legend{padding:0 6px;font-size:.85rem;font-weight:800;color:var(--green2)}fieldset.ephemeral .radio{display:block;margin:9px 0;font-weight:650}fieldset.ephemeral .radio input{width:auto;height:1.05em;margin:0 8px 0 0;padding:0;vertical-align:-1px}
.button.danger{background:var(--red)}.button.danger:hover{background:#7d1f1f}form.destroy{margin:0}
.button:disabled{background:var(--muted);cursor:not-allowed;opacity:.55}.button:disabled:hover{background:var(--muted)}
.error[hidden]{display:none}
.title-input{display:block;width:100%;margin:7px 0 14px;padding:0;border:0;border-radius:0;background:transparent;box-shadow:none;font-size:clamp(2rem,6vw,3.8rem);line-height:1.03;letter-spacing:-.05em;font-weight:850;overflow-wrap:anywhere}
.title-input:focus{border:0;box-shadow:none;outline:none;border-bottom:2px solid var(--green)}
.title-row{align-items:baseline}
.url-line{display:flex;align-items:baseline;flex-wrap:nowrap;flex:1;min-width:0}
.url-line .title-input{margin:7px 0 14px;flex:1;min-width:0}
.url-prefix{font-size:1rem;font-weight:500;color:var(--muted);white-space:nowrap;letter-spacing:0}
.lang-toggle{font-size:.8rem;font-weight:700;color:var(--muted);text-decoration:none;border:1px solid var(--line);border-radius:99px;padding:4px 10px;white-space:nowrap}
.lang-toggle:hover{color:var(--green2);border-color:var(--green)}
.copy-link{display:inline-flex;align-items:center;justify-content:center;width:2.2rem;height:2.2rem;padding:0;border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--muted);cursor:pointer;vertical-align:middle;margin-right:8px}
.copy-link:hover{color:var(--green2);border-color:var(--green)}
.copy-link.copied{color:var(--green2);border-color:var(--green)}
body.edit{background:radial-gradient(circle at 10% 0,rgba(161,43,43,.12),transparent 34rem),var(--bg)}
.password-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 28px;margin-top:21px}
details.password-col{margin:0;border:1px solid var(--line);border-radius:12px;padding:0 16px;background:#fbfcf9}
details.password-col summary{cursor:pointer;padding:14px 2px;font-size:.85rem;font-weight:800;color:var(--green2)}
details.password-col summary::-webkit-details-marker{color:var(--green)}
details.password-col[open] summary{border-bottom:1px solid var(--line);margin-bottom:4px}
details.password-col[open]{padding-bottom:8px}
@media(max-width:640px){.password-grid{grid-template-columns:1fr}}
.content-editor{min-height:40vh;padding:23px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:0 18px 50px rgba(23,33,27,.06);font-family:inherit;line-height:1.7;white-space:pre-wrap;overflow-wrap:anywhere}
.content-editor:focus{box-shadow:0 0 0 4px rgba(23,107,74,.12)}
.editor{min-height:58vh;font-family:inherit}

/* 登录/注册页三个 tab（纯 CSS 单选钮切换，无 JS 依赖） */
.login-tabs{margin-top:18px}
.login-tabs>input[type=radio]{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.login-tab-bar{display:flex;gap:2px;border-bottom:1px solid var(--line);margin-bottom:20px;flex-wrap:wrap}
.login-tab-bar label{padding:10px 16px;cursor:pointer;font-weight:750;font-size:.92rem;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}
.login-tab-bar label:hover{color:var(--green2)}
#tab-pw:checked~.login-tab-bar label[for=tab-pw],
#tab-code:checked~.login-tab-bar label[for=tab-code],
#tab-reg:checked~.login-tab-bar label[for=tab-reg]{color:var(--green2);border-bottom-color:var(--green)}
.login-tabs .tab-panel{display:none}
#tab-pw:checked~.tab-pw,
#tab-code:checked~.tab-code,
#tab-reg:checked~.tab-reg{display:block}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:21px}.grid2 .field{margin-top:0}.send-status{margin:10px 0 0;font-size:.88rem;font-weight:700}.send-status.success{color:var(--green2)}.send-status.error{color:var(--red)}@media(max-width:640px){.grid2{grid-template-columns:1fr}}
.row .code-input{flex:0 0 7.5em;width:7.5em}
.account-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:21px}.account-grid .field{margin-top:0}.account-value{display:flex;align-items:center;gap:10px;padding:13px 14px;border:1px solid var(--line);border-radius:11px;background:#fff;overflow-wrap:anywhere}.doc-list{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:8px}.doc-list a{display:block;padding:11px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;text-decoration:none;font-weight:700;overflow-wrap:anywhere}.doc-list a:hover{border-color:var(--green);color:var(--green2)}@media(max-width:640px){.account-grid{grid-template-columns:1fr}}
.icon-btn{padding:10px;min-height:0}
.agree{display:flex;align-items:center;gap:8px;margin-top:18px;font-size:.9rem;font-weight:650;flex-wrap:wrap}.agree input{width:auto;height:1.05em;margin:0;padding:0;vertical-align:-1px}
.terms .lead{margin-top:18px}.terms-list{margin:10px 0 0;padding-left:1.3em;line-height:1.7}.terms-list li{margin:6px 0}.terms .h2{margin-top:26px}