/* ============================================================
   皮肤 E ·「素白禅意」Zen Paper
   近白底、发丝线、大量留白、细字重大标题、
   墨色胶囊按钮 + 一点茶金，安静克制。
   与 site.css 同构，可直接整体替换。
   ============================================================ */
:root{
  --bg:#fafaf8;
  --card:#ffffff;
  --ink:#1e1d1a;
  --muted:#a09c92;
  --line:#eae8e2;
  --green:#a3762d;          /* 茶金点缀（沿用变量名以保持同构） */
  --green2:#7c5a20;
  --soft:#f4eee1;
  --warn:#8a5d08;
  --warnbg:#f8f0da;
  --red:#b04a3a;
  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:var(--bg)}
a{color:inherit}
.top,.shell,.foot{width:min(920px,calc(100% - 32px));margin:auto}
.top{display:flex;align-items:baseline;gap:14px;padding:34px 0}
.brand{font-size:1.05rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;text-decoration:none}
.tag,.foot,.hint{color:var(--muted);font-size:.86rem}
.shell{padding:46px 0}
.foot{text-align:center;padding:46px 0}
.card{max-width:680px;margin:auto;padding:clamp(30px,6vw,64px);background:var(--card);border:1px solid var(--line);border-radius:3px;box-shadow:none}
.wide{max-width:none}
h1{margin:10px 0 20px;font-size:clamp(2rem,5.5vw,3.4rem);font-weight:350;line-height:1.14;letter-spacing:-.015em;overflow-wrap:anywhere}
.eyebrow{margin:0;color:var(--green2);font-size:.72rem;font-weight:650;letter-spacing:.42em;text-transform:uppercase}
.lead{color:var(--muted);line-height:1.9;font-weight:350}
.field{margin-top:28px}
label{display:block;margin-bottom:9px;font-weight:600;font-size:.92rem}
input,textarea{width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:2px;background:#fff;color:var(--ink);font:inherit;outline:0;transition:border-color .2s}
input::placeholder,textarea::placeholder{color:#c6c2b8}
input:focus,textarea:focus{border-color:var(--ink);box-shadow:none}
textarea{min-height:230px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;line-height:1.8}
.editor{min-height:58vh;font-family:inherit}
.row,.actions,.bar{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.row input{flex:1}
.actions,.bar{margin-top:30px}
.button{display:inline-flex;min-height:44px;align-items:center;justify-content:center;padding:10px 26px;border:1px solid var(--ink);border-radius:99px;background:var(--ink);color:#fafaf8;font:inherit;font-weight:600;letter-spacing:.1em;text-decoration:none;cursor:pointer;transition:background .2s,color .2s}
.button:hover{background:#3a382f;border-color:#3a382f}
.button.ghost{background:transparent;color:var(--ink);border-color:#cfccc2}
.button.ghost:hover{border-color:var(--ink);background:transparent;color:var(--ink)}
.link{padding:0;border:0;background:none;color:var(--green2);font:inherit;font-size:.9rem;font-weight:600;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;cursor:pointer}
.error{display:block;margin-top:7px;color:var(--red);font-size:.88rem}
.notice{margin:18px 0;padding:14px 16px;border-radius:2px;line-height:1.6}
.success{color:#6d5420;background:var(--soft)}
.warning{color:var(--warn);background:var(--warnbg)}
.badge{display:inline-block;padding:5px 12px;border:1px solid var(--line);border-radius:99px;background:transparent;color:var(--muted);font-size:.76rem;font-weight:650;letter-spacing:.1em;vertical-align:middle}
.badge.read{border-color:#d9c68a;color:#8a6d1e}
.content{min-height:40vh;padding:clamp(24px,4vw,36px);border:1px solid var(--line);border-radius:3px;background:#fff;box-shadow:none;font-family:inherit;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere}
.content a{color:var(--green2);text-decoration:underline;text-underline-offset:4px}
.content .line{display:flex;align-items:flex-start;gap:6px;min-height:1.9em}
.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:.2em;opacity:.45}
.copy-line:hover{color:var(--green2);opacity:1}
.copy-line.copied{color:var(--green2);opacity:1}
.divider{margin:34px 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:20px}.row{display:block}.row .button{width:100%;margin-top:10px}.card{padding:26px}.spacer{display:none}}
details.password-options{margin-top:28px;border:1px solid var(--line);border-radius:2px;padding:0 16px;background:#fff}
details.password-options summary{cursor:pointer;padding:14px 2px;font-weight:600;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:10px 0 16px;font-size:1.3rem;font-weight:450;line-height:1.3;letter-spacing:0}
.seg{display:inline-flex;gap:0;padding:0;border:1px solid var(--line);border-radius:99px;background:#fff;overflow:hidden}
.seg label{position:relative;display:inline-flex;margin:0;align-items:stretch}
.seg input{position:absolute;inset:0;width:100%;height:100%;margin:0;padding:0;opacity:0;cursor:pointer}
.seg span{display:inline-flex;align-items:center;padding:9px 16px;font-size:.83rem;font-weight:600;letter-spacing:.04em;color:var(--muted);white-space:nowrap;transition:background .2s,color .2s}
.seg input:checked+span{background:var(--ink);color:#fafaf8}
.seg input:focus-visible+span{outline:2px solid var(--green);outline-offset:-2px}
.button.danger{background:var(--red);border-color:var(--red)}
.button.danger:hover{background:#8f3a2c;border-color:#8f3a2c}
form.destroy{margin:0}
.button:disabled{background:#c9c6bd;border-color:#c9c6bd;cursor:not-allowed;opacity:.7}
.button:disabled:hover{background:#c9c6bd}
.error[hidden]{display:none}
.title-input{display:block;width:100%;margin:10px 0 20px;padding:0;border:0;border-radius:0;background:transparent;box-shadow:none;font-size:clamp(2rem,5.5vw,3.4rem);line-height:1.14;letter-spacing:-.015em;font-weight:350;overflow-wrap:anywhere}
.title-input:focus{border:0;box-shadow:none;outline:none;border-bottom:1px solid var(--ink)}
.title-row{align-items:baseline}
.url-line{display:flex;align-items:baseline;flex-wrap:nowrap;flex:0 1 auto;min-width:0}
.url-line .title-input{margin:10px 0 20px;flex:0 1 auto;width:min(20rem,60vw);min-width:5em}
.url-prefix{font-size:1rem;font-weight:400;color:var(--muted);white-space:nowrap;letter-spacing:0}
.lang-toggle{font-size:.78rem;font-weight:600;color:var(--muted);text-decoration:none;border:1px solid var(--line);border-radius:99px;padding:4px 12px;white-space:nowrap}
.lang-toggle:hover{color:var(--ink);border-color:var(--ink)}
.user-chip{font-size:.84rem;font-weight:600;color:var(--ink);text-decoration:none;border:1px solid var(--line);border-radius:99px;padding:4px 14px;white-space:nowrap;background:#fff}
.user-chip:hover{border-color:var(--ink)}
.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:99px;background:transparent;color:var(--muted);cursor:pointer;vertical-align:middle;margin-right:8px}
.copy-link:hover{color:var(--ink);border-color:var(--ink)}
.copy-link.copied{color:var(--green2);border-color:var(--green)}
body.edit{background:linear-gradient(180deg,#fbf7f0,var(--bg) 380px)}
.password-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 28px;margin-top:28px}
details.password-col{margin:0;border:1px solid var(--line);border-radius:2px;padding:0 16px;background:#fff}
details.password-col summary{cursor:pointer;padding:14px 2px;font-size:.85rem;font-weight:600;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:clamp(24px,4vw,36px);border:1px solid var(--line);border-radius:3px;background:#fff;box-shadow:none;font-family:inherit;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere}
.content-editor:focus{border-color:var(--ink);box-shadow:none}
.login-tabs{margin-top:22px}
.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:24px;flex-wrap:wrap}
.login-tab-bar label{padding:10px 16px;cursor:pointer;font-weight:600;font-size:.9rem;color:var(--muted);border-bottom:1px solid transparent;margin-bottom:-1px;white-space:nowrap}
.login-tab-bar label:hover{color:var(--ink)}
#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(--ink);border-bottom-color:var(--ink)}
.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:14px;margin-top:28px}
.grid2 .field{margin-top:0}
.send-status{margin:10px 0 0;font-size:.88rem;font-weight:600}
.send-status.success{color:var(--green2);background:none}
.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:14px;margin-top:28px}
.account-grid .field{margin-top:0}
.account-value{display:flex;align-items:center;gap:10px;padding:13px 15px;border:1px solid var(--line);border-radius:2px;background:#fff;overflow-wrap:anywhere}
.doc-list{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:0}
.doc-list a{display:block;padding:13px 4px;border:0;border-bottom:1px solid var(--line);border-radius:0;background:transparent;text-decoration:none;font-weight:500;overflow-wrap:anywhere}
.doc-list li:first-child a{border-top:1px solid var(--line)}
.doc-list a:hover{color:var(--green2);border-color:var(--line);background:#fdfcf8}
@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:22px;font-size:.9rem;font-weight:500;flex-wrap:wrap}
.agree input{width:auto;height:1.05em;margin:0;padding:0;vertical-align:-1px;accent-color:var(--ink)}
.terms .lead{margin-top:22px}
.terms-list{margin:10px 0 0;padding-left:1.3em;line-height:1.9}
.terms-list li{margin:8px 0}
.terms .h2{margin-top:30px}

/* 管理控制台：站点统计 / 用户管理 / 文档管理 / 用户反馈 */
.admin-page{max-width:none}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-top:14px}
.stat{display:flex;flex-direction:column;gap:4px;padding:16px 18px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
.stat-num{font-size:1.6rem;font-weight:850;letter-spacing:-.02em;line-height:1.15}
.stat-num em{font-style:normal;font-size:.95rem;font-weight:700;color:var(--muted)}
.stat-label{color:var(--muted);font-size:.82rem;font-weight:700}
.table-wrap{margin-top:14px;overflow-x:auto}
.admin-table{width:100%;border-collapse:collapse;font-size:.9rem}
.admin-table th,.admin-table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.admin-table th{font-size:.76rem;font-weight:850;color:var(--muted);letter-spacing:.06em;white-space:nowrap}
.admin-table tr:last-child td{border-bottom:0}
.td-name{font-weight:750;overflow-wrap:anywhere}
.td-name a{color:var(--green2)}
.td-sub{display:block;font-weight:600;color:var(--muted);font-size:.8rem}
.td-actions{white-space:nowrap}
.badge-admin{background:var(--warnbg);color:var(--warn)}
.admin-edit{margin:0;border:1px solid var(--line);border-radius:10px;padding:0 12px;background:var(--card)}
.admin-edit summary{cursor:pointer;padding:8px 0;font-size:.84rem;font-weight:800;color:var(--green2)}
.admin-edit[open] summary{border-bottom:1px solid var(--line);margin-bottom:8px}
.admin-form-row{display:flex;align-items:center;gap:8px;margin:8px 0;flex-wrap:wrap}
.admin-form-row input[type=number],.admin-form-row input[type=password]{width:12rem;padding:9px 11px}
.admin-form-row .button{min-height:0;padding:9px 14px;font-size:.85rem}
.admin-form-row .check{display:flex;align-items:center;gap:6px;margin:0;font-weight:700;font-size:.85rem}
.admin-form-row .check input{width:auto}
.feedback-item{padding:14px 16px;margin-top:10px;border:1px solid var(--line);border-radius:12px;background:var(--card)}
.feedback-content{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.6}
.feedback-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:10px 0 0;color:var(--muted);font-size:.82rem}
.feedback-meta form{margin:0}
.feedback-meta .button{min-height:0;padding:6px 12px;font-size:.8rem}
@media(max-width:640px){.admin-table th,.admin-table td{padding:8px}}