/* ===== 智作PPT · 全局样式（对齐参考站风格：黑白极简 / 圆角卡片 / 浅灰底） ===== */
:root{
  --bg:#f5f6f8;
  --card:#ffffff;
  --ink:#111318;
  --ink-2:#3c4048;
  --ink-3:#8a8f99;
  --line:#e8eaee;
  --line-2:#dfe2e8;
  --black:#111318;
  --hover:#2a2e36;
  --accent:#111318;
  --green:#1db863;
  --red:#e5484d;
  --amber:#f5a524;
  --blue:#3a7afe;
  --radius:14px;
  --radius-lg:20px;
  --shadow:0 1px 2px rgba(17,19,24,.04),0 8px 24px rgba(17,19,24,.06);
  --shadow-lg:0 12px 40px rgba(17,19,24,.12);
  --font:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--font);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:var(--font);cursor:pointer;border:none;background:none}
input,textarea,select{font-family:var(--font);font-size:14px;color:var(--ink)}
::selection{background:#111318;color:#fff}

/* ===== 布局 ===== */
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section-head{text-align:center;margin-bottom:44px}
.section-head h2{font-size:30px;font-weight:800;letter-spacing:-.5px}
.section-head p{color:var(--ink-3);margin-top:8px;font-size:14px}

/* ===== 顶部导航 ===== */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1180px;margin:0 auto;padding:0 24px;height:62px;display:flex;align-items:center;gap:32px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:17px;letter-spacing:-.3px;color:var(--ink)}
.logo-mark{width:30px;height:30px;background:var(--black);color:#fff;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;letter-spacing:0;line-height:1;flex:0 0 auto}
.nav-links{display:flex;gap:28px;flex:1}
.nav-links a{font-size:14px;color:var(--ink-2);transition:color .15s}
.nav-links a:hover,.nav-links a.active{color:var(--ink);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--ink-2);transition:background .15s;font-size:16px}
.icon-btn:hover{background:var(--bg)}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:0 22px;height:42px;border-radius:11px;font-size:14px;font-weight:600;transition:all .15s;white-space:nowrap}
.btn-black{background:var(--black);color:#fff}
.btn-black:hover{background:var(--hover);transform:translateY(-1px)}
.btn-white{background:#fff;color:var(--ink);border:1px solid var(--line-2)}
.btn-white:hover{border-color:var(--ink)}
.btn-ghost{color:var(--ink-2)}
.btn-ghost:hover{color:var(--ink)}
.btn-sm{height:34px;padding:0 14px;font-size:13px;border-radius:9px}
.btn-lg{height:50px;padding:0 30px;font-size:15px;border-radius:13px}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn-block{width:100%}

/* ===== 徽章 / 标签 ===== */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;color:var(--ink-3);background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 12px}
.tag{display:inline-block;font-size:11px;padding:2px 8px;border-radius:6px;background:var(--bg);color:var(--ink-3);font-weight:500}
.tag-black{background:var(--black);color:#fff}
.tag-green{background:#e6f9ee;color:#0d9148}
.tag-red{background:#fdecec;color:var(--red)}
.tag-amber{background:#fef3e2;color:#b87708}
.tag-blue{background:#e8f0fe;color:var(--blue)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--green);display:inline-block}

/* ===== 卡片 ===== */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow)}
.card-pad{padding:26px}

/* ===== HERO ===== */
.hero{padding:80px 0 60px}
.hero-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:56px;align-items:start}
.hero h1{font-size:46px;font-weight:900;line-height:1.2;letter-spacing:-1px}
.hero .sub{color:var(--ink-3);margin:20px 0 32px;font-size:15px;max-width:480px}
.hero-cta{display:flex;gap:12px;margin-bottom:26px}
.hero-badges{display:flex;gap:10px;flex-wrap:wrap}
.hero-side{display:flex;flex-direction:column;gap:18px}

.credit-card{padding:24px 26px}
.credit-card .label{font-size:13px;color:var(--ink-3)}
.credit-card .num{font-size:38px;font-weight:900;letter-spacing:-1px;margin:4px 0 14px}
.credit-card .row{display:flex;gap:10px}

.model-card{padding:18px 22px}
.model-card .mc-head{font-size:13px;font-weight:700;margin-bottom:12px}
.model-item{display:flex;align-items:center;gap:9px;padding:7px 0;font-size:13px;color:var(--ink-2);border-bottom:1px dashed var(--line)}
.model-item:last-child{border-bottom:none}
.model-item .status{margin-left:auto;font-size:12px;color:var(--ink-3)}
.model-item .dot{box-shadow:0 0 0 3px rgba(29,184,99,.15)}

/* ===== 流程步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step-card{padding:28px;position:relative}
.step-card .no{width:38px;height:38px;background:var(--black);color:#fff;border-radius:11px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;margin-bottom:16px}
.step-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.step-card p{font-size:13px;color:var(--ink-3)}

/* ===== 套餐卡片 ===== */
.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.plan-card{padding:28px 24px;position:relative;transition:all .2s}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.plan-card.hot{border:2px solid var(--black)}
.plan-card .hot-badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--black);color:#fff;font-size:11px;padding:3px 12px;border-radius:999px;font-weight:600;white-space:nowrap}
.plan-card .plan-name{font-size:17px;font-weight:800;display:flex;align-items:center;gap:8px}
.plan-card .price{margin:16px 0 6px}
.plan-card .price .cur{font-size:15px;font-weight:700;vertical-align:top}
.plan-card .price .val{font-size:32px;font-weight:900;letter-spacing:-1px}
.plan-card .per{font-size:12px;color:var(--ink-3);margin-bottom:16px}
.plan-card ul{list-style:none;margin-bottom:20px}
.plan-card li{font-size:13px;color:var(--ink-2);padding:5px 0;display:flex;gap:8px;align-items:center}
.plan-card li::before{content:"✓";font-weight:800;color:var(--ink);font-size:12px}

/* ===== 模板卡片 ===== */
.tpl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tpl-card{overflow:hidden;transition:all .2s;cursor:pointer}
.tpl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.tpl-thumb{aspect-ratio:16/10;position:relative;overflow:hidden}
.tpl-thumb .slide-mock{position:absolute;inset:0;padding:14%;display:flex;flex-direction:column;gap:8%}
.tpl-thumb .mock-line{border-radius:3px;background:rgba(255,255,255,.85)}
.tpl-thumb .mock-title{height:14%;width:60%;border-radius:3px;background:rgba(255,255,255,.95)}
.tpl-meta{padding:14px 16px;display:flex;align-items:center;justify-content:space-between}
.tpl-meta .name{font-size:14px;font-weight:700}
.tpl-meta .cat{font-size:12px;color:var(--ink-3);margin-top:2px}

/* ===== 筛选条 ===== */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.filter-btn{padding:8px 18px;border-radius:999px;font-size:13px;background:#fff;border:1px solid var(--line-2);color:var(--ink-2);transition:all .15s}
.filter-btn:hover{border-color:var(--ink)}
.filter-btn.active{background:var(--black);color:#fff;border-color:var(--black)}

/* ===== FAQ ===== */
.faq{max-width:760px;margin:0 auto}
.faq-item{border:1px solid var(--line);background:#fff;border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;padding:18px 22px;font-size:15px;font-weight:600;text-align:left}
.faq-q .arrow{transition:transform .2s;color:var(--ink-3)}
.faq-item.open .arrow{transform:rotate(180deg)}
.faq-a{padding:0 22px;max-height:0;overflow:hidden;transition:max-height .25s ease,padding .25s;color:var(--ink-3);font-size:14px}
.faq-item.open .faq-a{padding:0 22px 18px;max-height:220px}

/* ===== 页脚 ===== */
.footer{background:#fff;border-top:1px solid var(--line);padding:44px 0;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer h4{font-size:14px;font-weight:700;margin-bottom:14px}
.footer a{display:block;font-size:13px;color:var(--ink-3);padding:4px 0}
.footer a:hover{color:var(--ink)}
.footer .desc{font-size:13px;color:var(--ink-3);margin-top:12px;max-width:280px}
.footer-bottom{text-align:center;color:var(--ink-3);font-size:12px;margin-top:36px;padding-top:20px;border-top:1px solid var(--line)}

/* ===== 后台布局（控制台 / Admin） ===== */
.dash{display:grid;grid-template-columns:220px 1fr;min-height:calc(100vh - 62px)}
.sidebar{background:#fff;border-right:1px solid var(--line);padding:20px 14px}
.side-user{display:flex;align-items:center;gap:10px;padding:10px 12px;margin-bottom:16px;border-radius:12px;background:var(--bg)}
.side-user .avatar{width:36px;height:36px;border-radius:50%;background:var(--black);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.side-user .name{font-size:13px;font-weight:700}
.side-user .role{font-size:11px;color:var(--ink-3)}
.side-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;font-size:14px;color:var(--ink-2);margin-bottom:2px;transition:all .15s;cursor:pointer}
.side-link:hover{background:var(--bg)}
.side-link.active{background:var(--black);color:#fff;font-weight:600}
.side-group{font-size:11px;color:var(--ink-3);padding:14px 12px 6px;font-weight:600;letter-spacing:1px}
.dash-main{padding:32px 36px;overflow:auto}
.dash-title{font-size:24px;font-weight:800;margin-bottom:6px}
.dash-sub{color:var(--ink-3);font-size:13px;margin-bottom:28px}

.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}
.stat-card{padding:20px 22px}
.stat-card .s-label{font-size:12px;color:var(--ink-3)}
.stat-card .s-val{font-size:28px;font-weight:900;margin:4px 0}
.stat-card .s-trend{font-size:12px}
.stat-card .up{color:var(--green)}
.stat-card .down{color:var(--red)}

/* ===== 表格 ===== */
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;padding:12px 16px;color:var(--ink-3);font-weight:600;font-size:12px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:13px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
tr:last-child td{border-bottom:none}
tbody tr:hover{background:var(--bg)}

/* ===== 表单 ===== */
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:8px}
.input,.textarea,.select{width:100%;padding:12px 14px;border:1px solid var(--line-2);border-radius:11px;background:#fff;outline:none;transition:border-color .15s}
.input:focus,.textarea:focus,.select:focus{border-color:var(--ink)}
.textarea{resize:vertical;min-height:110px}
.form-hint{font-size:12px;color:var(--ink-3);margin-top:6px}

/* ===== 生成器 ===== */
.gen-wrap{max-width:1080px;margin:0 auto;padding:44px 24px 80px}
.gen-steps{display:flex;gap:0;margin:0 auto 40px;max-width:640px}
.gen-step{flex:1;text-align:center;position:relative}
.gen-step .g-dot{width:34px;height:34px;border-radius:50%;background:#fff;border:2px solid var(--line-2);display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;color:var(--ink-3);position:relative;z-index:1;transition:all .2s}
.gen-step .g-label{font-size:12px;color:var(--ink-3);margin-top:8px}
.gen-step::before{content:"";position:absolute;top:17px;left:-50%;width:100%;height:2px;background:var(--line-2)}
.gen-step:first-child::before{display:none}
.gen-step.active .g-dot{background:var(--black);border-color:var(--black);color:#fff}
.gen-step.active .g-label{color:var(--ink);font-weight:700}
.gen-step.done .g-dot{background:var(--green);border-color:var(--green);color:#fff}
.gen-step.done::before{background:var(--green)}
.gen-layout{display:grid;grid-template-columns:1fr 340px;gap:24px;align-items:start}
.outline-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;font-size:14px;min-height:180px}
.outline-box .ob-item{padding:9px 12px;border-radius:9px;margin-bottom:6px;background:var(--bg);display:flex;gap:10px;align-items:center;opacity:0;animation:fadeUp .35s forwards}
.outline-box .ob-item .ob-no{font-weight:800;color:var(--ink-3);font-size:12px;width:22px}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.typing-cursor{display:inline-block;width:8px;height:16px;background:var(--ink);vertical-align:middle;animation:blink .8s infinite}
@keyframes blink{50%{opacity:0}}
.progress-bar{height:8px;background:var(--bg);border-radius:99px;overflow:hidden}
.progress-bar .fill{height:100%;background:var(--black);border-radius:99px;transition:width .3s}

/* ===== 模板上传进度面板（常驻，成功/失败不自动消失） ===== */
.up-panel{margin-top:16px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:16px 18px}
.up-panel .up-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.up-panel .up-icon{width:34px;height:34px;flex:none;border-radius:10px;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:15px}
.up-panel .up-info{flex:1;min-width:0}
.up-panel .up-name{font-size:13px;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.up-panel .up-sub{font-size:12px;color:var(--ink-3);margin-top:3px;line-height:1.5}
.up-panel .up-pct{font-size:13px;font-weight:800;flex:none;font-variant-numeric:tabular-nums}
.up-panel .up-close{flex:none;width:26px;height:26px;border:none;background:transparent;color:var(--ink-3);cursor:pointer;border-radius:7px;font-size:13px;line-height:1}
.up-panel .up-close:hover{background:var(--bg);color:var(--ink)}
.up-panel .up-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.up-panel.is-ok{border-color:#b7e9cd;background:#f6fdf9}
.up-panel.is-ok .up-icon{background:#0d9148;color:#fff;font-weight:800}
.up-panel.is-ok .up-sub{color:#0d9148;font-weight:600}
.up-panel.is-err{border-color:#f6c9c9;background:#fef7f7}
.up-panel.is-err .up-icon{background:var(--red);color:#fff;font-weight:800}
.up-panel.is-err .up-sub{color:var(--red);font-weight:600}
/* 上传完成后，对应模板卡片闪烁定位 */
.tpl-card.flash{animation:tplFlash 2.4s ease-out}
@keyframes tplFlash{
  0%,100%{box-shadow:0 0 0 0 rgba(17,19,24,0)}
  12%{box-shadow:0 0 0 4px rgba(17,19,24,.28)}
  40%{box-shadow:0 0 0 4px rgba(17,19,24,.10)}
  70%{box-shadow:0 0 0 4px rgba(17,19,24,.22)}
}
.gen-side .card-pad{padding:20px}
.side-row{display:flex;justify-content:space-between;font-size:13px;padding:8px 0;border-bottom:1px dashed var(--line)}
.side-row:last-child{border:none}
.side-row .k{color:var(--ink-3)}
.side-row .v{font-weight:700}

/* ===== PPT 预览 ===== */
.slide-preview{aspect-ratio:16/9;border-radius:12px;overflow:hidden;position:relative;box-shadow:var(--shadow)}
.slide-inner{position:absolute;inset:0;padding:7% 8%;display:flex;flex-direction:column;justify-content:center}
.thumb-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.thumb-slide{aspect-ratio:16/9;border-radius:10px;position:relative;overflow:hidden;border:1px solid var(--line);cursor:pointer;transition:all .15s}
.thumb-slide:hover{transform:scale(1.03);box-shadow:var(--shadow)}
.thumb-slide .ts-no{position:absolute;bottom:6px;right:8px;font-size:10px;color:rgba(255,255,255,.85);font-weight:700}

/* ===== 登录 ===== */
.auth-wrap{min-height:calc(100vh - 62px);display:flex;align-items:center;justify-content:center;padding:40px 20px}
.auth-card{width:400px;padding:36px}
.auth-tabs{display:flex;background:var(--bg);border-radius:11px;padding:4px;margin:22px 0}
.auth-tab{flex:1;height:38px;border-radius:8px;font-size:14px;font-weight:600;color:var(--ink-3)}
.auth-tab.active{background:#fff;color:var(--ink);box-shadow:var(--shadow)}

/* ===== Toast ===== */
.toast{position:fixed;top:76px;left:50%;transform:translateX(-50%) translateY(-12px);background:var(--black);color:#fff;padding:11px 22px;border-radius:11px;font-size:13px;opacity:0;transition:all .25s;z-index:999;pointer-events:none;box-shadow:var(--shadow-lg)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== 空状态 ===== */
.empty{text-align:center;padding:60px 20px;color:var(--ink-3)}
.empty .e-icon{font-size:40px;margin-bottom:12px}

/* ===== 图表（admin 简易柱状图） ===== */
.bar-chart{display:flex;align-items:flex-end;gap:10px;height:160px;padding:10px 4px}
.bar-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px}
.bar{width:100%;max-width:34px;background:var(--black);border-radius:6px 6px 0 0;transition:height .5s}
.bar-col .bl{font-size:11px;color:var(--ink-3)}

/* ===== 弹窗 ===== */
.modal-mask{position:fixed;inset:0;background:rgba(17,19,24,.45);backdrop-filter:blur(3px);z-index:200;display:none;align-items:center;justify-content:center;padding:20px}
.modal-mask.show{display:flex}
.modal{background:#fff;border-radius:var(--radius-lg);width:460px;max-width:100%;padding:28px;animation:fadeUp .25s}
.modal h3{font-size:18px;font-weight:800;margin-bottom:18px}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:22px}

/* ===== 响应式 ===== */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr}
  .hero h1{font-size:34px}
  .plans,.tpl-grid,.steps{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .dash{grid-template-columns:1fr}
  .sidebar{display:flex;overflow-x:auto;padding:10px}
  .side-user,.side-group{display:none}
  .side-link{white-space:nowrap}
  .gen-layout{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
}

/* 配图生成中占位动画 */
.img-spin{width:26px;height:26px;border:3px solid #e3e3e8;border-top-color:#111318;border-radius:50%;animation:imgspin .9s linear infinite}
@keyframes imgspin{to{transform:rotate(360deg)}}
button[disabled]{opacity:.45;cursor:not-allowed}

/* 生成器内嵌于后台框架时贴合主内容区 */
.dash-main .gen-wrap{max-width:none;margin:0;padding:4px 0 40px}