:root{--bg:#f6f7f9;--panel:#fff;--ink:#18202f;--muted:#667085;--line:#d8dee8;--brand:#1f7a68;--brand-dark:#14594c;--accent:#c96f3e;--danger:#b42318;--shadow:0 16px 48px #18202f24}*{box-sizing:border-box}html,body{min-height:100%}body{background:var(--bg);color:var(--ink);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,textarea,select{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.site-shell{width:min(1220px,100vw - 32px);margin:0 auto;padding:24px 0 56px}.topbar{justify-content:space-between;align-items:center;gap:20px;margin-bottom:18px;display:flex}.brand{font-size:22px;font-weight:780}.nav{color:var(--muted);flex-wrap:wrap;align-items:center;gap:16px;font-size:14px;display:flex}.nav-home,.text-button{color:var(--muted);background:0 0;border:0;padding:0}.nav-home:hover,.text-button:hover,.nav a:hover{color:var(--brand)}.nav-select{align-items:center;gap:6px;display:flex}.nav-select select{border:1px solid var(--line);background:var(--panel);max-width:128px;height:32px;color:var(--ink);border-radius:6px;padding:0 8px}.hero{background:linear-gradient(90deg,#0f1824c7,#0f18241f),radial-gradient(circle at 72% 35%,#d9c073,#0000 30%),linear-gradient(135deg,#2d645b,#7a8a98);border-radius:8px;grid-template-columns:minmax(0,1fr) 180px;align-items:start;gap:24px;min-height:288px;padding:32px;display:grid;overflow:hidden}.hero-copy{min-width:0}.hero-identity{align-items:center;gap:22px;margin-bottom:36px;display:flex}.hero-avatar{color:#18202f;background:linear-gradient(135deg,#fff,#d8e2eb);border:2px solid #ffffffb8;border-radius:50%;place-items:center;width:92px;height:92px;font-size:30px;font-weight:800;display:grid;overflow:hidden;box-shadow:0 12px 28px #0b12203d}.hero-avatar img{object-fit:cover;width:100%;height:100%;display:block}.hero-nickname{color:#fff;text-shadow:0 2px #0000003d;word-break:break-word;align-items:center;min-width:132px;max-width:min(320px,55vw);min-height:48px;padding:8px 0;font-size:24px;font-weight:800;line-height:1.25;display:flex}.hero h1{color:#fff;letter-spacing:0;max-width:620px;margin:0;font-size:clamp(32px,5vw,58px);line-height:1.04}.hero p{color:#ffffffd1;max-width:620px;margin:14px 0 0;line-height:1.65}.wechat-card{width:180px;color:var(--ink);background:#ffffffe6;border:1px solid #ffffff6b;border-radius:8px;justify-items:center;gap:10px;margin-left:auto;padding:12px;display:grid;box-shadow:0 14px 34px #0b12202e}.wechat-card img{object-fit:cover;background:#fff;border-radius:6px;width:148px;height:148px;display:block}.wechat-empty{border:1px dashed var(--line);width:148px;height:148px;color:var(--muted);background:#f6f7f9;border-radius:6px;place-items:center;font-size:13px;display:grid}.wechat-card div{text-align:center;gap:3px;display:grid}.wechat-card strong{font-size:14px}.wechat-card span{color:var(--muted);font-size:12px}.filter-panel{border:1px solid var(--line);background:var(--panel);border-radius:8px;margin:22px 0;padding:16px}.filter-panel-head{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.filter-group{border-top:1px solid #edf0f4;grid-template-columns:52px minmax(0,1fr);align-items:start;gap:12px;padding:10px 0;display:grid}.filter-label{color:var(--muted);font-size:13px;line-height:36px}.filters{flex-wrap:wrap;gap:10px;margin:0;display:flex}.chip{border:1px solid var(--line);background:var(--panel);min-height:36px;color:var(--ink);border-radius:999px;padding:7px 14px}.chip.active{background:var(--brand);border-color:var(--brand);color:#fff}.masonry{columns:4 230px;column-gap:16px}.case-card{border:1px solid var(--line);background:var(--panel);break-inside:avoid;border-radius:8px;width:100%;margin:0 0 16px;display:inline-block;overflow:hidden}.case-image{background:#d8dee8;width:100%;display:block}.image-button{background:0 0;border:0;width:100%;padding:0;display:block}.case-placeholder{min-height:220px;color:var(--muted);background:#d8dee8;place-items:center;display:grid}.case-body{padding:12px}.tag-row,.actions{flex-wrap:wrap;gap:8px;display:flex}.tag{color:var(--brand-dark);background:#eef4f2;border-radius:999px;padding:4px 8px;font-size:12px}.prompt{color:var(--muted);font-size:13px;line-height:1.55}.btn{border:1px solid var(--line);min-height:34px;color:var(--ink);background:#fff;border-radius:6px;padding:6px 10px}.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn.danger{color:var(--danger);border-color:#f0b8b2}.load-more{color:var(--muted);justify-content:center;margin-top:18px;font-size:14px;display:flex}.scroll-sentinel{height:1px}.empty{border:1px dashed var(--line);background:var(--panel);color:var(--muted);text-align:center;border-radius:8px;padding:42px}.modal-backdrop{z-index:20;background:#0b122094;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.toast{z-index:40;color:#fff;text-align:center;min-width:160px;box-shadow:var(--shadow);background:#18202ff0;border-radius:999px;padding:10px 16px;position:fixed;bottom:28px;left:50%;transform:translate(-50%)}.back-top{z-index:35;width:44px;height:44px;color:var(--brand-dark);opacity:.88;pointer-events:auto;background:#fffffff0;border:1px solid #1f7a6838;border-radius:50%;place-items:center;font-size:22px;font-weight:760;line-height:1;text-decoration:none;transition:opacity .16s,transform .16s,background .16s,color .16s;display:grid;position:fixed;bottom:28px;right:24px;transform:translateY(0);box-shadow:0 10px 30px #18202f29}.back-top.visible{opacity:1;transform:translateY(0)}.back-top:hover{background:var(--brand);border-color:var(--brand);color:#fff}.modal{background:var(--panel);width:min(1040px,100%);max-height:min(820px,100vh - 40px);box-shadow:var(--shadow);border-radius:8px;overflow:auto}.modal-grid{grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);gap:20px;padding:20px;display:grid}.modal-main-image{background:#d8dee8;border-radius:8px;width:100%}.reference-grid{grid-template-columns:repeat(3,1fr);gap:8px;margin-top:10px;display:grid}.reference-grid img{border-radius:6px;width:100%}.modal h2,.panel h1,.panel h2{letter-spacing:0;margin:0}.modal-prompt{white-space:pre-wrap;color:var(--ink);line-height:1.65}.confirm{background:#fff8ed;border:1px solid #f0d6a6;border-radius:8px;margin-top:14px;padding:12px}.confirm textarea,.login-card input{border:1px solid var(--line);border-radius:6px;width:100%;padding:10px}.admin-shell{width:min(1180px,100vw - 32px);margin:0 auto;padding:28px 0 56px}.panel{border:1px solid var(--line);background:var(--panel);border-radius:8px;padding:20px}.table{border-collapse:collapse;width:100%;margin-top:16px}.table th,.table td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:12px 8px}.login-wrap{place-items:center;min-height:100vh;padding:24px;display:grid}.login-card{border:1px solid var(--line);background:var(--panel);border-radius:8px;gap:14px;width:min(420px,100%);padding:24px;display:grid}.user-settings{gap:18px;margin-top:18px;display:grid}.admin-alert{color:var(--danger);background:#fff3f1;border:1px solid #f0b8b2;border-radius:8px;padding:10px 12px}.user-list{grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:14px;display:grid}.user-form{border:1px solid var(--line);background:#fbfcfd;border-radius:8px;gap:12px;padding:14px;display:grid}.user-form-new{background:#f7fbfa}.user-form h2{letter-spacing:0;margin:0;font-size:18px}.user-form label{color:var(--muted);gap:6px;font-size:13px;display:grid}.user-form input[type=text],.user-form input:not([type]){width:100%}.user-form input:not([type=checkbox]):not([type=file]){border:1px solid var(--line);min-height:36px;color:var(--ink);background:#fff;border-radius:6px;padding:8px 10px}.user-form input[type=file]{border:1px dashed var(--line);background:#fff;border-radius:6px;width:100%;min-height:36px;padding:7px}.user-upload-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.checkbox-row{align-items:center;gap:8px;display:flex!important}.user-form-head,.user-preview{align-items:center;gap:12px;display:flex}.user-form-head{justify-content:space-between}.user-preview small,.user-form small{color:var(--muted)}.user-preview>div:last-child{gap:4px;display:grid}.user-avatar-preview{width:56px;height:56px;color:var(--brand-dark);background:#e9eff4;border-radius:50%;flex:none;place-items:center;font-weight:800;display:grid;overflow:hidden}.user-avatar-preview img,.user-qr-preview{object-fit:cover;width:100%;height:100%;display:block}.user-qr-preview{border:1px solid var(--line);background:#fff;border-radius:6px;flex:none;width:68px;height:68px}@media (max-width:780px){.topbar{flex-direction:column;align-items:flex-start}.hero{grid-template-columns:1fr;padding:24px}.hero-identity{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}.hero-avatar{width:82px;height:82px;font-size:27px}.hero-nickname{min-width:0;max-width:100%;min-height:0;padding:0;font-size:22px}.wechat-card{justify-self:start;width:min(100%,220px);margin-left:0}.nav{gap:10px}.nav-select{width:calc(50% - 6px)}.nav-select select{flex:1;max-width:none}.filter-group{grid-template-columns:1fr;gap:8px}.filter-label{line-height:1.3}.modal-grid{grid-template-columns:1fr}.table{display:block;overflow-x:auto}.back-top{width:40px;height:40px;font-size:20px;bottom:18px;right:16px}.user-upload-grid{grid-template-columns:1fr}}