/* 银发回忆录 Web 原型 — 共享设计系统 */
:root{
  --bg:#F7F5F2; --surface:#FFFFFF; --ink:#1F2937; --muted:#6B7280;
  --primary:#B45309; --primary-hover:#92400E; --accent:#D97706;
  --success:#15803D; --danger:#B91C1C; --line:#E7E5E4;
  --radius:14px; --shadow:0 1px 3px rgba(31,41,55,.08),0 8px 24px rgba(31,41,55,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink);font-size:16px;line-height:1.7}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-hover)}
img{max-width:100%}
.container{max-width:1080px;margin:0 auto;padding:0 20px}

/* ===== 导航栏（公开页共用）===== */
.nav-public,.nav-app{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink);white-space:nowrap}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
  border-radius:10px;background:linear-gradient(135deg,var(--accent),var(--primary));color:#fff;font-size:17px}
.nav-links{display:flex;gap:6px;flex:1;flex-wrap:wrap}
.nav-links a{padding:8px 14px;border-radius:10px;color:var(--ink);font-size:15px}
.nav-links a:hover{background:#F5F5F4}
.nav-links a.active{background:#FEF3E2;color:var(--primary);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px;white-space:nowrap}

/* ===== 用户菜单（受保护页）===== */
.user-menu{position:relative}
.avatar{width:38px;height:38px;border-radius:50%;border:none;cursor:pointer;
  background:linear-gradient(135deg,#F59E0B,#B45309);color:#fff;font-weight:700;font-size:15px}
.user-dropdown{display:none;position:absolute;right:0;top:46px;background:var(--surface);
  border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);min-width:180px;padding:6px}
.user-menu.open .user-dropdown{display:block}
.user-dropdown a{display:block;padding:9px 12px;border-radius:8px;color:var(--ink);font-size:14px}
.user-dropdown a:hover{background:#F5F5F4;color:var(--ink)}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid transparent;
  border-radius:12px;padding:10px 20px;font-size:15px;font-weight:600;cursor:pointer;transition:.15s;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover);color:#fff}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:#F5F5F4}
.btn-outline{background:var(--surface);border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-danger{background:var(--surface);border-color:#FECACA;color:var(--danger)}
.btn-danger:hover{background:#FEF2F2}
.btn-lg{padding:14px 30px;font-size:17px;border-radius:14px}
.btn-sm{padding:6px 12px;font-size:13px;border-radius:9px}
.btn-block{width:100%}

/* ===== 卡片与布局 ===== */
.page{padding:32px 0 60px}
.section{padding:56px 0}
.section-head{text-align:center;max-width:640px;margin:0 auto 36px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.card-pad{padding:24px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.divider{height:1px;background:var(--line);margin:28px 0}
.note{background:#FEF9F3;border:1px solid #FDE7CB;border-radius:12px;padding:14px 18px;font-size:14px;color:#7C5A2E}

/* ===== 文字 ===== */
.h1{font-size:30px;font-weight:700;line-height:1.35}
.h2{font-size:24px;font-weight:700}
.h3{font-size:18px;font-weight:700}
.lead{font-size:18px;color:var(--muted)}
.muted{color:var(--muted)}
.small{font-size:13px}
.tag{display:inline-block;padding:2px 10px;border-radius:99px;background:#F5F5F4;color:var(--muted);font-size:12px}
.badge{display:inline-block;padding:3px 10px;border-radius:99px;font-size:12px;font-weight:600}
.badge-green{background:#DCFCE7;color:var(--success)}
.badge-red{background:#FEE2E2;color:var(--danger)}
.badge-gray{background:#F5F5F4;color:var(--muted)}
.badge-amber{background:#FEF3E2;color:var(--primary)}

/* ===== 首页 Hero ===== */
.hero{padding:72px 0 64px;text-align:center}
.hero-title{font-size:42px;font-weight:800;line-height:1.3;letter-spacing:1px}
.hero-title em{font-style:normal;color:var(--primary)}
.hero-sub{font-size:18px;color:var(--muted);max-width:560px;margin:18px auto 0}
.hero-cta{display:flex;gap:14px;justify-content:center;margin-top:32px;flex-wrap:wrap}
.trust{margin-top:22px;font-size:13px;color:var(--muted)}
.mock-book{width:200px;height:270px;border-radius:6px 14px 14px 6px;margin:0 auto;
  background:linear-gradient(160deg,#7C2D12,#B45309);color:#FDF6EC;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:8px;box-shadow:var(--shadow);border-left:8px solid #451A03}
.mock-play{width:260px;height:160px;border-radius:14px;background:#1F2937;display:flex;align-items:center;
  justify-content:center;color:#FDE7CB;font-size:40px;box-shadow:var(--shadow)}

/* ===== 步骤 / 评价 ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{text-align:center;padding:28px 20px}
.step-num{display:inline-flex;width:40px;height:40px;border-radius:50%;background:#FEF3E2;color:var(--primary);
  font-weight:700;align-items:center;justify-content:center;margin-bottom:12px}
.quote{padding:26px}
.quote p{font-size:16px;line-height:1.8}
.quote-author{margin-top:14px;font-size:13px;color:var(--muted)}

/* ===== 价格 ===== */
.price-card{display:flex;flex-direction:column;padding:28px}
.price-hot{border-color:var(--primary);border-width:2px;position:relative}
.price-hot .hot-tag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:var(--primary);color:#fff;font-size:12px;padding:3px 12px;border-radius:99px}
.price-val{font-size:36px;font-weight:800;color:var(--primary);margin:10px 0 2px}
.price-val small{font-size:14px;color:var(--muted);font-weight:400}
.price-feat{list-style:none;margin:16px 0 22px;flex:1}
.price-feat li{padding:6px 0;font-size:14px;border-bottom:1px dashed var(--line)}
.price-feat li::before{content:"✓";color:var(--success);margin-right:8px;font-weight:700}

/* ===== 表单 ===== */
.field{margin-bottom:16px}
.label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.input,.textarea,.select{width:100%;border:1px solid var(--line);border-radius:12px;padding:11px 14px;
  font-size:15px;font-family:inherit;background:var(--surface);color:var(--ink)}
.input:focus,.textarea:focus,.select:focus{outline:2px solid #FDBA74;border-color:transparent}
.textarea{min-height:110px;resize:vertical}
.form-row{display:flex;gap:12px}
.form-row>*{flex:1}
.checkbox{display:flex;gap:8px;align-items:flex-start;font-size:13px;color:var(--muted)}

/* ===== 聊天 ===== */
.chat-wrap{max-width:760px;margin:0 auto}
.chat-box{height:440px;overflow-y:auto;padding:22px;display:flex;flex-direction:column;gap:14px;background:#FBFAF8}
.msg{max-width:78%;padding:12px 16px;border-radius:16px;font-size:16px;line-height:1.7}
.msg-ai{background:var(--surface);border:1px solid var(--line);border-top-left-radius:4px;align-self:flex-start}
.msg-user{background:var(--primary);color:#fff;border-top-right-radius:4px;align-self:flex-end}
.chat-input{display:flex;gap:10px;padding:14px;border-top:1px solid var(--line);background:var(--surface);
  border-radius:0 0 var(--radius) var(--radius)}
.mic{width:52px;height:52px;border-radius:50%;border:none;background:var(--primary);color:#fff;
  font-size:20px;cursor:pointer;flex-shrink:0}
.mic.rec{background:var(--danger);animation:pulse 1.2s infinite}
@keyframes pulse{50%{opacity:.6}}
.chip{display:inline-block;padding:7px 14px;border-radius:99px;background:var(--surface);
  border:1px solid var(--line);font-size:14px;cursor:pointer}
.chip:hover{border-color:var(--primary);color:var(--primary)}

/* ===== 时间线 ===== */
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl-item{position:relative;padding-bottom:24px}
.tl-item::before{content:"";position:absolute;left:-25px;top:7px;width:12px;height:12px;border-radius:50%;
  background:var(--accent);border:2px solid #fff;box-shadow:0 0 0 1px var(--line)}
.tl-date{font-size:13px;color:var(--muted);margin-bottom:4px}

/* ===== 进度 / 上传 ===== */
.progress{height:10px;border-radius:99px;background:#F5F5F4;overflow:hidden}
.progress-bar{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--accent),var(--primary))}
.upload-zone{border:2px dashed #D6D3D1;border-radius:var(--radius);padding:44px 20px;text-align:center;
  color:var(--muted);cursor:pointer;background:#FBFAF8}
.upload-zone:hover{border-color:var(--primary);color:var(--primary)}
.photo-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.photo{aspect-ratio:1;border-radius:12px;background:linear-gradient(145deg,#E7E5E4,#D6D3D1);
  display:flex;align-items:center;justify-content:center;color:#A8A29E;font-size:13px;position:relative}
.photo .fix{position:absolute;bottom:6px;left:6px;font-size:11px}

/* ===== 表格 ===== */
.table{width:100%;border-collapse:collapse;background:var(--surface)}
.table th{background:#FAFAF9;text-align:left;font-size:13px;color:var(--muted);font-weight:600;
  padding:11px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
.table td{padding:12px 14px;border-bottom:1px solid #F5F5F4;font-size:14px;vertical-align:middle}
.table tr:hover td{background:#FCFBF9}
.table .num{font-variant-numeric:tabular-nums}
.toolbar{display:flex;gap:10px;align-items:center;margin-bottom:16px;flex-wrap:wrap}
.toolbar .input,.toolbar .select{width:auto;min-width:150px}

/* ===== 选项卡 ===== */
.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:22px;flex-wrap:wrap}
.tab{padding:10px 18px;font-size:15px;color:var(--muted);border:none;background:none;cursor:pointer;
  border-bottom:2px solid transparent;margin-bottom:-1px}
.tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}

/* ===== KPI / 仪表盘 ===== */
.kpi{padding:20px 22px}
.kpi .num{font-size:26px;font-weight:800;color:var(--ink)}
.kpi .lbl{font-size:13px;color:var(--muted)}

/* ===== 管理后台 ===== */
.admin-shell{display:flex;min-height:100vh;background:var(--bg)}
.admin-side{width:220px;background:#1C1917;color:#E7E5E4;padding:20px 12px;flex-shrink:0;display:flex;flex-direction:column}
.admin-side .brand{color:#fff;margin-bottom:26px;padding:0 10px}
.side-nav{display:flex;flex-direction:column;gap:4px;flex:1}
.side-nav a{padding:11px 14px;border-radius:10px;color:#D6D3D1;font-size:15px}
.side-nav a:hover{background:#292524;color:#fff}
.side-nav a.active{background:var(--primary);color:#fff;font-weight:600}
.side-nav a.disabled{opacity:.45;cursor:not-allowed}
.admin-main{flex:1;padding:24px 32px;min-width:0}
.admin-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}

/* ===== 弹窗 ===== */
.modal-mask{display:none;position:fixed;inset:0;background:rgba(31,41,55,.45);z-index:100;
  align-items:center;justify-content:center;padding:20px}
.modal-mask.show{display:flex}
.modal{background:var(--surface);border-radius:16px;max-width:460px;width:100%;padding:26px;box-shadow:var(--shadow)}

/* ===== 页脚 ===== */
.footer{border-top:1px solid var(--line);background:var(--surface);padding:28px 0;margin-top:40px}
.foot-links{display:flex;gap:22px;justify-content:center;font-size:13px;color:var(--muted);flex-wrap:wrap}
.foot-links a{color:var(--muted)}
.foot-links a:hover{color:var(--primary)}

/* ===== 大字模式（适老化）===== */
body.elder-mode{font-size:20px}
body.elder-mode .nav-links a{font-size:18px;padding:10px 14px}
body.elder-mode .btn{font-size:18px;padding:14px 26px}
body.elder-mode .msg{font-size:20px}
body.elder-mode .input,body.elder-mode .textarea,body.elder-mode .select{font-size:19px;padding:14px 16px}
body.elder-mode .h1{font-size:34px}
body.elder-mode .card-pad{padding:30px}
body.elder-mode .table td,body.elder-mode .table th{font-size:17px;padding:14px}

@media (max-width:860px){
  .grid-3,.steps,.photo-grid{grid-template-columns:repeat(2,1fr)}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .nav-inner{height:auto;flex-wrap:wrap;padding:10px 0}
  .admin-shell{flex-direction:column}
  .admin-side{width:100%;flex-direction:row;align-items:center}
  .side-nav{flex-direction:row;overflow-x:auto}
  .hero-title{font-size:32px}
}
@media (max-width:560px){
  .grid-2,.grid-3,.steps,.photo-grid{grid-template-columns:1fr}
}