*{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#4f46e5;
  --primary-light:#6366f1;
  --primary-dark:#4338ca;
  --bg:#f5f7fb;
  --card-bg:#fff;
  --text:#1f2937;
  --text-light:#6b7280;
  --border:#e5e7eb;
  --radius:12px;
  --shadow:0 1px 3px rgba(0,0,0,.04);
  --shadow-hover:0 8px 24px rgba(0,0,0,.08);
}
html{font-size:16px;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
.container{max-width:1100px;margin:0 auto;padding:24px}

/* ====== 头部卡片 ====== */
.header-card{
  background:linear-gradient(135deg,#4f46e5,#7c3aed);
  color:#fff;
  border-radius:16px;
  padding:28px;
  margin-bottom:24px;
  box-shadow:0 4px 20px rgba(79,70,229,.25);
}
.header-card h1{font-size:24px;margin-bottom:8px;word-break:break-word;line-height:1.4}
.header-card .meta{opacity:.85;font-size:13px;word-break:break-all}

/* ====== 通用 Section ====== */
.section{
  background:var(--card-bg);
  border-radius:var(--radius);
  padding:24px;
  margin-bottom:20px;
  box-shadow:var(--shadow);
}
.section h2{
  font-size:17px;
  margin-bottom:16px;
  color:var(--text);
  display:flex;
  align-items:center;
  gap:8px;
}
.section h2 .icon{font-size:20px}

/* ====== 图表导航 ====== */
.chart-nav{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:16px;
}
.chart-nav button{
  padding:8px 16px;
  background:#f3f4f6;
  border:1px solid var(--border);
  border-radius:8px;
  cursor:pointer;
  font-size:13px;
  transition:all .2s;
  font-family:inherit;
  white-space:nowrap;
}
.chart-nav button:hover{background:#e0e7ff;border-color:var(--primary)}
.chart-nav button.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.chart-box{width:100%;height:420px}

/* ====== 报告内容 ====== */
.report-content p{margin:10px 0;line-height:1.8;text-align:justify;word-break:break-word}
.report-content h3{
  font-size:15px;
  margin:20px 0 12px;
  padding:6px 14px;
  background:linear-gradient(135deg,#eef2ff,#f5f3ff);
  border-left:4px solid var(--primary);
  border-radius:4px;
  color:var(--primary-dark);
}
.report-content ul{margin:8px 0 12px 24px}
.report-content li{margin:6px 0}
.report-content strong{color:var(--primary)}
.report-content ol{margin:8px 0 12px 24px}

/* ====== 授权验证门 ====== */
.auth-gate{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  min-height:80vh;
  gap:16px;
  padding:20px;
  max-width:420px;
  margin:0 auto;
}
.auth-gate .auth-lock-icon{
  width:72px;
  height:72px;
  background:linear-gradient(135deg,#6366f1,#8b5cf6);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:36px;
  color:#fff;
  box-shadow:0 8px 24px rgba(99,102,241,.3);
  margin-bottom:8px;
  animation:lockPulse 2s ease-in-out infinite;
}
@keyframes lockPulse{
  0%,100%{transform:scale(1);box-shadow:0 8px 24px rgba(99,102,241,.3)}
  50%{transform:scale(1.05);box-shadow:0 12px 32px rgba(99,102,241,.4)}
}
@keyframes lockBounce{0%{transform:scale(0) rotate(-10deg)}100%{transform:scale(1) rotate(0)}}
.auth-gate h2{color:#1f2937;font-size:22px;font-weight:700;text-align:center}
.auth-gate .tip{color:#6b7280;font-size:14px;max-width:340px;text-align:center;line-height:1.7;margin-bottom:4px}
.auth-input-row{
  display:flex;
  flex-direction:column;
  gap:12px;
  width:100%;
  margin-top:8px;
}
.auth-gate input{
  padding:14px 16px;
  font-size:16px;
  border:1.5px solid #e5e7eb;
  border-radius:12px;
  text-align:center;
  letter-spacing:4px;
  width:100%;
  font-family:inherit;
  transition:all .2s;
  background:#f9fafb;
}
.auth-gate input:focus{
  outline:none;
  border-color:#6366f1;
  background:#fff;
  box-shadow:0 0 0 4px rgba(99,102,241,.1);
}
.auth-gate input:disabled{background:#f3f4f6;cursor:not-allowed}
.auth-gate input::placeholder{letter-spacing:1px;font-size:14px;color:#9ca3af}
.auth-gate button{
  padding:14px 20px;
  background:linear-gradient(135deg,#6366f1,#8b5cf6);
  color:#fff;
  border:none;
  border-radius:12px;
  font-size:15px;
  cursor:pointer;
  font-weight:600;
  transition:all .2s;
  white-space:nowrap;
  font-family:inherit;
  width:100%;
  box-shadow:0 4px 16px rgba(99,102,241,.3);
}
.auth-gate button:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(99,102,241,.4)}
.auth-gate button:active{transform:translateY(0)}
.auth-gate button:disabled{background:#c7d2fe;cursor:not-allowed;transform:none;box-shadow:none}
.auth-gate button.btn-loading{position:relative;overflow:hidden}
.auth-gate button.btn-loading::after{
  content:'';
  position:absolute;
  top:0;left:-100%;
  width:100%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.25),transparent);
  animation:btnShine 1s infinite;
}
@keyframes btnShine{to{left:100%}}
.auth-status{
  font-size:13px;
  min-height:20px;
  text-align:center;
  width:100%;
  transition:all .2s;
  padding:0 8px;
}
.auth-status.info{color:#6366f1}
.auth-status.error{color:#ef4444}
.auth-status.success{color:#10b981}
.auth-auto-hint{
  font-size:12px;
  color:#6b7280;
  background:#f3f4f6;
  padding:8px 16px;
  border-radius:20px;
  text-align:center;
}
.auth-footer-tip{color:#9ca3af;font-size:12px;text-align:center;margin-top:4px}

/* ====== 加载状态 ====== */
.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;gap:16px;color:var(--text-light);font-size:15px;text-align:center;padding:20px}
.spinner{width:42px;height:42px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ====== 错误页 ====== */
.error-box{
  padding:32px 24px;
  background:#fef2f2;
  border:1px solid #fecaca;
  border-radius:12px;
  color:#991b1b;
  text-align:center;
  max-width:560px;
  margin:0 auto;
}
.error-box h3{margin-bottom:12px}
.error-box code{display:block;background:#fff;padding:8px 12px;border-radius:6px;margin-top:12px;font-size:12px;color:var(--text-light);word-break:break-all;text-align:left}
.error-box button{margin-top:16px;padding:8px 20px;background:var(--primary);color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:14px}

/* ====== 建议卡片 ====== */
.suggestion-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.suggestion-card{
  border:1.5px solid var(--border);
  border-radius:10px;
  padding:14px;
  cursor:pointer;
  transition:all .2s;
  background:#fafbff;
}
.suggestion-card:hover{border-color:var(--primary);background:#f5f3ff;transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.suggestion-card.active{
  border-color:var(--primary);
  background:linear-gradient(135deg,#eef2ff,#f5f3ff);
  border-width:2px;
  box-shadow:0 4px 16px rgba(79,70,229,.15);
}
.suggestion-card.active .s-title{color:var(--primary)}
.suggestion-card.active .s-tag{background:var(--primary);color:#fff}
.suggestion-card .s-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:4px}
.suggestion-card .s-desc{font-size:12px;color:var(--text-light);line-height:1.5}
.suggestion-card .s-tag{display:inline-block;padding:2px 8px;background:#eef2ff;color:var(--primary);border-radius:4px;font-size:11px;margin-top:8px;transition:all .2s}

/* ====== Toast 通知 ====== */
.toast-container{
  position:fixed;
  top:24px;
  left:50%;
  transform:translateX(-50%);
  z-index:9999;
  display:flex;
  flex-direction:column;
  gap:10px;
  align-items:center;
  pointer-events:none;
  width:calc(100% - 32px);
  max-width:420px;
}
.toast{
  background:#fff;
  border-radius:12px;
  padding:14px 20px;
  box-shadow:0 10px 40px rgba(0,0,0,.18);
  display:flex;
  align-items:center;
  gap:10px;
  min-width:240px;
  max-width:100%;
  animation:toastIn .35s cubic-bezier(.21,1.22,.44,1);
  pointer-events:auto;
  border:1px solid rgba(0,0,0,.04);
}
.toast.success{border-left:4px solid #10b981}
.toast.error{border-left:4px solid #ef4444}
.toast.warning{border-left:4px solid #f59e0b}
.toast.info{border-left:4px solid #3b82f6}
.toast-icon{font-size:20px;flex-shrink:0}
.toast.success .toast-icon{color:#10b981}
.toast.error .toast-icon{color:#ef4444}
.toast.warning .toast-icon{color:#f59e0b}
.toast.info .toast-icon{color:#3b82f6}
.toast-msg{font-size:14px;color:var(--text);line-height:1.5;flex:1;word-break:break-word}
.toast-close{cursor:pointer;color:#9ca3af;font-size:16px;flex-shrink:0;padding:0 0 0 4px;transition:color .2s;border:none;background:none}
.toast-close:hover{color:#374151}
.toast.hiding{animation:toastOut .25s ease-in forwards}
@keyframes toastIn{from{opacity:0;transform:translateY(-30px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}
@keyframes toastOut{from{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-20px) scale(.95)}}

/* ====== 平板适配 (≤768px) ====== */
@media screen and (max-width:768px){
  .container{padding:16px}
  .header-card{padding:20px;border-radius:14px;margin-bottom:16px}
  .header-card h1{font-size:20px}
  .header-card .meta{font-size:12px}
  .section{padding:18px;border-radius:10px;margin-bottom:16px}
  .section h2{font-size:16px;margin-bottom:14px}
  .section h2 .icon{font-size:18px}
  .chart-nav{gap:6px;margin-bottom:14px}
  .chart-nav button{padding:6px 12px;font-size:12px;border-radius:6px}
  .chart-box{height:320px}
  .report-content h3{font-size:14px;padding:5px 12px}
  .report-content ul,.report-content ol{margin:8px 0 12px 20px}
  /* 授权验证 */
  .auth-gate{padding:30px 16px;gap:14px}
  .auth-gate .auth-lock-icon{width:60px;height:60px;font-size:30px;margin-bottom:4px}
  .auth-gate h2{font-size:20px}
  .auth-gate .tip{font-size:13px;max-width:100%}
  .auth-gate input{font-size:15px;letter-spacing:3px}
  .auth-gate button{font-size:15px}
  .auth-status{font-size:13px;max-width:100%}
  /* 建议卡片 */
  .suggestion-grid{grid-template-columns:1fr;gap:12px}
  /* 错误页 */
  .error-box{padding:24px 20px;border-radius:10px}
  .error-box h3{font-size:17px}
  /* Toast */
  .toast-container{top:16px;width:calc(100% - 24px)}
  .toast{min-width:0;padding:12px 16px}
  .toast-msg{font-size:13px}
}

/* ====== 手机适配 (≤480px) ====== */
@media screen and (max-width:480px){
  .container{padding:12px}
  .header-card{padding:18px;border-radius:12px;margin-bottom:14px}
  .header-card h1{font-size:18px;line-height:1.4}
  .header-card .meta{font-size:11px}
  .section{padding:14px;border-radius:10px;margin-bottom:14px}
  .section h2{font-size:15px;margin-bottom:12px;gap:6px}
  .section h2 .icon{font-size:17px}
  .chart-nav{gap:5px;margin-bottom:12px}
  .chart-nav button{padding:5px 10px;font-size:11px;border-radius:5px}
  .chart-box{height:260px}
  .report-content p{font-size:14px;line-height:1.7}
  .report-content h3{font-size:13px;padding:4px 10px;margin:16px 0 10px}
  .report-content ul,.report-content ol{margin:6px 0 10px 18px;font-size:14px}
  /* 授权验证 */
  .auth-gate{padding:24px 12px;gap:12px}
  .auth-gate .auth-lock-icon{width:52px;height:52px;font-size:26px;margin-bottom:2px}
  .auth-gate h2{font-size:18px}
  .auth-gate .tip{font-size:12px;line-height:1.6}
  .auth-input-row{gap:10px}
  .auth-gate input{font-size:14px;padding:12px 14px;letter-spacing:3px}
  .auth-gate button{font-size:14px;padding:12px 20px}
  .auth-status{font-size:12px}
  .auth-footer-tip{font-size:11px}
  /* 加载 */
  .loading{font-size:14px;min-height:50vh}
  .spinner{width:36px;height:36px}
  /* 建议卡片 */
  .suggestion-card{padding:12px;border-radius:8px}
  .suggestion-card .s-title{font-size:13px}
  .suggestion-card .s-desc{font-size:11px}
  .suggestion-card .s-tag{font-size:10px}
  /* Toast */
  .toast-container{top:12px;width:calc(100% - 16px);gap:8px}
  .toast{padding:10px 14px;gap:8px}
  .toast-icon{font-size:18px}
  .toast-msg{font-size:12px}
  /* 错误页 */
  .error-box{padding:20px 16px}
  .error-box h3{font-size:16px}
  .error-box code{font-size:11px}
}

/* ====== 超小屏 (≤360px) ====== */
@media screen and (max-width:360px){
  .container{padding:10px}
  .header-card h1{font-size:16px}
  .section{padding:12px}
  .chart-box{height:220px}
  .chart-nav button{padding:4px 8px;font-size:10px}
  .auth-gate .auth-lock-icon{width:46px;height:46px;font-size:22px}
  .auth-gate h2{font-size:17px}
}

/* ====== 暗色模式 (可选支持) ====== */
@media (prefers-color-scheme:dark){
  :root{
    --bg:#111827;
    --card-bg:#1f2937;
    --text:#f3f4f6;
    --text-light:#9ca3af;
    --border:#374151;
  }
  body{background:var(--bg);color:var(--text)}
  .section{background:var(--card-bg);box-shadow:0 1px 3px rgba(0,0,0,.3)}
  .chart-nav button{background:#374151;border-color:#4b5563;color:#d1d5db}
  .chart-nav button:hover{background:#4f46e5;border-color:#6366f1}
  .chart-nav button.active{background:#6366f1;color:#fff;border-color:#6366f1}
  .suggestion-card{background:#1e293b;border-color:#374151}
  .suggestion-card:hover{background:#312e81;border-color:#6366f1}
  .suggestion-card.active{background:linear-gradient(135deg,#312e81,#3730a3);border-color:#6366f1}
  .suggestion-card .s-title{color:#f3f4f6}
  .suggestion-card .s-desc{color:#9ca3af}
  .suggestion-card.active .s-title{color:#a5b4fc}
  .suggestion-card .s-tag{background:#374151;color:#a5b4fc}
  .report-content h3{background:linear-gradient(135deg,#312e81,#3730a3);color:#c7d2fe}
  .toast{background:#1f2937;color:#f3f4f6;border-color:#374151}
  .toast-msg{color:#f3f4f6}
  .auth-gate h2{color:#f3f4f6}
  .auth-gate .tip{color:#9ca3af}
  .auth-gate input{background:#111827;border-color:#374151;color:#f3f4f6}
  .auth-gate input:focus{border-color:#6366f1;background:#1f2937}
  .auth-gate input::placeholder{color:#6b7280}
  .auth-gate button:disabled{background:#4b5563;cursor:not-allowed}
  .auth-auto-hint{background:#374151;color:#9ca3af}
  .auth-footer-tip{color:#6b7280}
  .error-box{background:#450a0a;border-color:#7f1d1d;color:#fca5a5}
  .error-box code{background:#1f2937;color:#9ca3af}
}