:root {
    --primary: #3B82F6; --primary-dark: #2563EB; --primary-light: #DBEAFE;
    --success: #10B981; --success-light: #D1FAE5;
    --warning: #F59E0B; --warning-light: #FEF3C7;
    --danger: #EF4444; --danger-light: #FEE2E2;
    --bg: #F0F4FF; --card: #FFFFFF;
    --text: #1E293B; --text-secondary: #64748B; --text-muted: #94A3B8;
    --border: #E2E8F0; --shadow: 0 4px 24px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.08);
    --radius: 16px; --radius-sm: 10px; --radius-xs: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* { margin:0; padding:0; box-sizing:border-box; }
body { font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif; background:var(--bg); color:var(--text); min-height:100vh; -webkit-font-smoothing:antialiased; -webkit-tap-highlight-color:transparent; overflow-x:hidden; }
.app { max-width:500px; margin:0 auto; padding:0 0 env(safe-area-inset-bottom); min-height:100vh; position:relative; }
.screen { display:none; animation:fadeSlideIn 0.4s ease; }
.screen.active { display:block; }
@keyframes fadeSlideIn { from{ opacity:0; transform:translateY(12px); } to{ opacity:1; transform:translateY(0); } }
@keyframes pulse { 0%,100%{ transform:scale(1); } 50%{ transform:scale(1.05); } }
@keyframes spin { to{ transform:rotate(360deg); } }
@keyframes toastIn { from{ opacity:0; transform:translateX(-50%) translateY(-20px); } to{ opacity:1; transform:translateX(-50%) translateY(0); } }

/* Header */
.app-header { background:linear-gradient(135deg,#3B82F6,#6366F1 50%,#8B5CF6); padding:24px 20px 32px; border-radius:0 0 24px 24px; position:relative; overflow:hidden; }
.app-header::before { content:''; position:absolute; top:-60px; right:-40px; width:180px; height:180px; background:rgba(255,255,255,.08); border-radius:50%; }
.app-header::after { content:''; position:absolute; bottom:-20px; left:-30px; width:120px; height:120px; background:rgba(255,255,255,.05); border-radius:50%; }
.back-btn { display:inline-flex; align-items:center; gap:6px; color:rgba(255,255,255,.9); font-size:14px; cursor:pointer; padding:6px 0; margin-bottom:8px; z-index:1; position:relative; }
.back-btn svg { width:20px; height:20px; }
.app-header h1 { color:#fff; font-size:22px; font-weight:700; z-index:1; position:relative; letter-spacing:.5px; }
.app-header .subtitle { color:rgba(255,255,255,.75); font-size:13px; z-index:1; position:relative; margin-top:4px; }

/* Verify */
.verify-hero { background:linear-gradient(160deg,#3B82F6,#6366F1 40%,#A855F7); padding:48px 28px 56px; text-align:center; border-radius:0 0 40px 40px; position:relative; overflow:hidden; }
.verify-hero::before { content:''; position:absolute; inset:0; background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23fff' fill-opacity='.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); opacity:.5; }
.verify-hero .logo-icon { width:72px; height:72px; background:rgba(255,255,255,.18); border-radius:20px; display:flex; align-items:center; justify-content:center; margin:0 auto 20px; font-size:36px; backdrop-filter:blur(10px); border:1.5px solid rgba(255,255,255,.2); }
.verify-hero h1 { color:#fff; font-size:26px; font-weight:700; letter-spacing:1px; margin-bottom:8px; z-index:1; position:relative; }
.verify-hero p { color:rgba(255,255,255,.8); font-size:14px; z-index:1; position:relative; line-height:1.6; }
.verify-card { background:var(--card); margin:-24px 16px 0; border-radius:var(--radius); padding:28px 22px; box-shadow:var(--shadow-lg); position:relative; z-index:2; }
.verify-card h3 { font-size:17px; font-weight:600; margin-bottom:20px; display:flex; align-items:center; gap:8px; }
.verify-card h3 .icon { font-size:22px; }
.input-group { position:relative; margin-bottom:16px; }
.input-group .input-icon { position:absolute; left:14px; top:50%; transform:translateY(-50%); width:20px; height:20px; color:var(--text-muted); }
.input-group input { width:100%; padding:14px 14px 14px 44px; border:2px solid var(--border); border-radius:var(--radius-sm); font-size:16px; color:var(--text); background:#F8FAFC; transition:var(--transition); outline:none; letter-spacing:1px; }
.input-group input:focus { border-color:var(--primary); background:#fff; box-shadow:0 0 0 4px rgba(59,130,246,.1); }
.input-group input::placeholder { color:var(--text-muted); letter-spacing:0; }
.btn-primary { width:100%; padding:15px; font-size:17px; font-weight:600; border:none; border-radius:var(--radius-sm); background:linear-gradient(135deg,#3B82F6,#6366F1); color:#fff; cursor:pointer; transition:var(--transition); box-shadow:0 4px 16px rgba(59,130,246,.3); }
.btn-primary:active { transform:scale(.98); opacity:.9; }
.btn-primary:disabled { opacity:.5; cursor:not-allowed; transform:none; }
.verify-tips { text-align:center; margin-top:16px; color:var(--text-muted); font-size:12px; display:flex; align-items:center; justify-content:center; gap:6px; }

/* Dashboard */
.main-content { padding:0 16px 24px; }
.student-card { background:var(--card); border-radius:var(--radius); padding:20px; margin-top:-20px; z-index:2; position:relative; box-shadow:var(--shadow-lg); }
.student-card .top-row { display:flex; align-items:center; gap:14px; }
.avatar { width:52px; height:52px; border-radius:16px; display:flex; align-items:center; justify-content:center; font-size:24px; font-weight:700; color:#fff; flex-shrink:0; }
.avatar.male { background:linear-gradient(135deg,#3B82F6,#6366F1); }
.avatar.female { background:linear-gradient(135deg,#EC4899,#F472B6); }
.info-text { flex:1; min-width:0; }
.info-text .name { font-size:20px; font-weight:700; }
.info-text .meta { font-size:12px; color:var(--text-secondary); margin-top:3px; }
.info-text .id-card { font-size:11px; color:var(--text-muted); margin-top:2px; }
.risk-badge { display:inline-flex; align-items:center; gap:4px; padding:5px 12px; border-radius:20px; font-size:12px; font-weight:600; margin-top:10px; }
.risk-badge.normal { background:var(--success-light); color:#059669; }
.risk-badge.mild { background:#FEF9C3; color:#A16207; }
.risk-badge.moderate { background:var(--warning-light); color:#B45309; }
.risk-badge.severe { background:var(--danger-light); color:#DC2626; animation:pulse 2s infinite; }
.risk-badge.no_data { background:#F1F5F9; color:#64748B; }

.stat-row { display:grid; grid-template-columns:repeat(2,1fr); gap:10px; margin-top:14px; }
.stat-card { background:#F8FAFC; border-radius:var(--radius-sm); padding:14px; text-align:center; border:1px solid var(--border); transition:var(--transition); cursor:pointer; }
.stat-card:active { background:#EFF6FF; border-color:var(--primary-light); }
.stat-num { font-size:28px; font-weight:700; background:linear-gradient(135deg,#3B82F6,#8B5CF6); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.stat-label { font-size:12px; color:var(--text-secondary); margin-top:2px; }

.section-title { display:flex; align-items:center; justify-content:space-between; padding:20px 0 12px; }
.section-title h2 { font-size:17px; font-weight:700; display:flex; align-items:center; gap:8px; }
.section-title .more { color:var(--primary); font-size:13px; cursor:pointer; display:flex; align-items:center; gap:2px; }

/* Exam Cards */
.exam-card { background:var(--card); border-radius:var(--radius); padding:16px; margin-bottom:10px; box-shadow:var(--shadow); cursor:pointer; transition:var(--transition); border:1px solid transparent; }
.exam-card:active { transform:scale(.985); border-color:var(--primary-light); }
.exam-header { display:flex; justify-content:space-between; align-items:flex-start; }
.exam-date { font-size:15px; font-weight:600; }
.exam-year { font-size:12px; color:var(--text-muted); }
.risk-tag { padding:3px 10px; border-radius:12px; font-size:11px; font-weight:600; }
.risk-tag.normal { background:var(--success-light); color:#059669; }
.risk-tag.mild { background:#FEF9C3; color:#A16207; }
.risk-tag.moderate { background:var(--warning-light); color:#B45309; }
.risk-tag.severe { background:var(--danger-light); color:#DC2626; }
.dimension-dots { display:flex; gap:8px; margin-top:12px; flex-wrap:wrap; }
.dim-dot { display:flex; align-items:center; gap:4px; padding:4px 10px; border-radius:14px; font-size:11px; font-weight:500; }
.dim-dot.normal { background:#F0FDF4; color:#16A34A; }
.dim-dot.abnormal { background:#FEF2F2; color:#DC2626; }
.dim-dot .d-label { color:var(--text-secondary); }

/* Plan Cards */
.plan-card { background:var(--card); border-radius:var(--radius); padding:16px; margin-bottom:10px; box-shadow:var(--shadow); cursor:pointer; transition:var(--transition); border-left:4px solid var(--primary); }
.plan-card.body { border-left-color:#F59E0B; } .plan-card.oral { border-left-color:#EC4899; } .plan-card.vision { border-left-color:#3B82F6; }
.plan-card.spine { border-left-color:#10B981; } .plan-card.mental { border-left-color:#8B5CF6; } .plan-card.comprehensive { border-left-color:#6366F1; }
.plan-card:active { transform:scale(.985); }
.plan-header { display:flex; justify-content:space-between; align-items:flex-start; }
.plan-title { font-size:15px; font-weight:600; line-height:1.4; flex:1; }
.plan-type-tag { font-size:11px; padding:3px 8px; border-radius:10px; background:var(--primary-light); color:var(--primary-dark); white-space:nowrap; margin-left:8px; }
.plan-meta { display:flex; gap:12px; margin-top:8px; font-size:12px; color:var(--text-secondary); }
.plan-content-preview { margin-top:10px; padding:10px 12px; background:#F8FAFC; border-radius:var(--radius-xs); font-size:13px; color:var(--text-secondary); line-height:1.6; max-height:80px; overflow:hidden; position:relative; }
.plan-content-preview::after { content:''; position:absolute; bottom:0; left:0; right:0; height:30px; background:linear-gradient(transparent,#F8FAFC); }

/* Detail Screen */
.dimension-grid { display:flex; flex-direction:column; gap:10px; }
.dimension-card { background:var(--card); border-radius:var(--radius); padding:16px; box-shadow:var(--shadow); border-left:4px solid var(--border); }
.dimension-card.severe { border-left-color:#EF4444; background:#FEF2F2; }
.dimension-card.moderate { border-left-color:#F59E0B; background:#FFFBEB; }
.dimension-card.mild { border-left-color:#FBBF24; background:#FFFDF5; }
.dimension-card.normal { border-left-color:#10B981; background:#F0FDF4; }
.dim-header { display:flex; align-items:center; justify-content:space-between; }
.dim-name { font-size:15px; font-weight:600; display:flex; align-items:center; gap:8px; }
.dim-icon { font-size:22px; }
.dim-badge { padding:3px 10px; border-radius:12px; font-size:11px; font-weight:600; }
.dim-badge.normal { background:#D1FAE5; color:#059669; }
.dim-badge.severe { background:#FEE2E2; color:#DC2626; }
.dim-badge.moderate { background:#FEF3C7; color:#B45309; }
.dim-badge.mild { background:#FEF9C3; color:#A16207; }
.detail-items { margin-top:10px; }
.detail-item { display:flex; justify-content:space-between; align-items:center; padding:8px 12px; margin-top:6px; background:rgba(255,255,255,.7); border-radius:var(--radius-xs); font-size:13px; }
.field-label { color:var(--text-secondary); }
.field-value { font-weight:600; color:var(--text); }
.field-value.abnormal { color:#DC2626; }
.field-unit { color:var(--text-muted); font-size:11px; }

/* Chart */
.chart-container { background:var(--card); border-radius:var(--radius); padding:16px; margin-bottom:16px; box-shadow:var(--shadow); }
.chart-container h3 { font-size:15px; font-weight:600; margin-bottom:8px; }
.chart-box { width:100%; height:320px; }

/* Plan Detail */
.intervention-detail { padding:0 16px 100px; }
.plan-full-card { background:var(--card); border-radius:var(--radius); padding:20px; margin-bottom:14px; box-shadow:var(--shadow); }
.plan-full-card h2 { font-size:19px; font-weight:700; margin-bottom:12px; }
.info-row { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:16px; }
.info-tag { padding:4px 12px; border-radius:14px; font-size:12px; font-weight:500; background:#F1F5F9; color:var(--text-secondary); }
.content-block { background:#F8FAFC; border-radius:var(--radius-sm); padding:16px; line-height:1.8; font-size:14px; }
.content-block h4 { font-size:14px; font-weight:600; margin:12px 0 6px; color:var(--primary-dark); }
.content-block h4:first-child { margin-top:0; }
.content-block ul { padding-left:20px; }
.content-block li { margin:4px 0; }

/* Materials */
.material-grid { display:flex; flex-direction:column; gap:10px; }
.material-card { background:var(--card); border-radius:var(--radius); padding:14px; display:flex; gap:12px; align-items:center; box-shadow:var(--shadow); cursor:pointer; transition:var(--transition); }
.material-card:active { transform:scale(.985); }
.mat-thumb { width:64px; height:64px; border-radius:var(--radius-sm); background:linear-gradient(135deg,#E0E7FF,#C7D2FE); display:flex; align-items:center; justify-content:center; font-size:26px; flex-shrink:0; }
.mat-thumb.video { background:linear-gradient(135deg,#FEE2E2,#FECACA); }
.mat-thumb.article { background:linear-gradient(135deg,#D1FAE5,#A7F3D0); }
.mat-thumb.pdf { background:linear-gradient(135deg,#FEF3C7,#FDE68A); }
.mat-info { flex:1; min-width:0; }
.mat-title { font-size:14px; font-weight:600; }
.mat-desc { font-size:12px; color:var(--text-secondary); margin-top:2px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.mat-tags { display:flex; gap:4px; margin-top:4px; }
.mat-tag { padding:2px 6px; border-radius:6px; font-size:10px; background:#F1F5F9; color:var(--text-muted); }

/* States */
.loading-state { text-align:center; padding:60px 20px; color:var(--text-muted); }
.loading-spinner { width:36px; height:36px; border:3px solid var(--primary-light); border-top-color:var(--primary); border-radius:50%; animation:spin .8s linear infinite; margin:0 auto 12px; }
.empty-state { text-align:center; padding:40px 20px; color:var(--text-muted); }
.empty-icon { font-size:48px; margin-bottom:12px; }
.empty-state p { font-size:14px; }

.toast { position:fixed; top:20px; left:50%; transform:translateX(-50%); padding:12px 24px; border-radius:24px; font-size:14px; font-weight:500; z-index:9999; box-shadow:0 8px 32px rgba(0,0,0,.12); animation:toastIn .3s ease; pointer-events:none; }
.toast.error { background:#FEF2F2; color:#DC2626; }
.toast.success { background:#F0FDF4; color:#059669; }

/* Tab Bar */
.tab-bar { position:fixed; bottom:0; left:50%; transform:translateX(-50%); width:100%; max-width:500px; background:var(--card); border-top:1px solid var(--border); display:flex; padding:6px 0 env(safe-area-inset-bottom); z-index:100; }
.tab-item { flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center; padding:6px 0; cursor:pointer; color:var(--text-muted); font-size:10px; gap:4px; transition:var(--transition); }
.tab-item.active { color:var(--primary); }
.tab-icon { font-size:22px; }
.tab-label { font-size:10px; font-weight:500; }