/* ============================================================
   安妮花 AI 培训前准备 · 共享样式
   ============================================================ */
:root{
  --bg:#F5F8F6;
  --surface:#FFFFFF;
  --surface-soft:#F0F4F2;
  --text:#15201C;
  --text-2:#5C6B66;
  --text-3:#A2ADA8;
  --brand:#98E75C;
  --brand-dark:#1D5751;
  --brand-deep:#143D39;
  --brand-soft:#EDF9E6;
  --border:#E2E9E6;
  --divider:#EAF0EE;
  --warn:#F6B94A;
  --warn-soft:#FFF8E7;
  --danger:#D84B4B;
  --danger-soft:#FFF1F1;
  --blue:#4A90D9;
  --blue-soft:#EEF6FF;
  --radius-xl:24px;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow:0 2px 14px rgba(20,40,35,.05);
  --shadow-md:0 8px 28px rgba(20,40,35,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{
  margin:0;
  font-family:Inter,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at 6% 2%, rgba(152,231,92,.14), transparent 22%),
    radial-gradient(circle at 96% 6%, rgba(29,87,81,.06), transparent 20%),
    var(--bg);
  line-height:1.6;
  min-height:100vh;
}
button{font:inherit;cursor:pointer}
input,select,textarea{font:inherit}
a{color:var(--brand-dark);text-decoration:none}

/* ============================================================
   Site header (shared across pages)
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.site-header-inner{
  max-width:1100px;margin:0 auto;padding:12px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.site-brand{display:flex;align-items:center;gap:14px}
.site-brand:hover{opacity:.9}
.brand-logo{height:44px;width:auto;display:block}
.brand-text h1{margin:0;font-size:18px;font-weight:800;letter-spacing:-.3px;line-height:1.2}
.brand-text p{margin:2px 0 0;color:var(--text-2);font-size:12px}
.site-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:11px;
  color:var(--text-2);font-size:14px;font-weight:600;
  transition:.16s ease;border:1px solid transparent;
}
.nav-link svg{width:16px;height:16px;stroke-width:2}
.nav-link:hover{background:var(--surface-soft);color:var(--text)}
.nav-link.active{background:var(--brand-soft);color:var(--brand-dark);border-color:#D6EFC3}

.app{max-width:1100px;margin:0 auto;padding:26px 24px 60px}

/* ============================================================
   Buttons
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;gap:7px;
  height:38px;padding:0 16px;border-radius:12px;
  border:1px solid var(--border);background:var(--surface);
  color:var(--text);font-size:14px;font-weight:600;
  transition:.16s ease;white-space:nowrap;text-decoration:none;
}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.btn:active{transform:scale(.98)}
.btn svg{width:16px;height:16px;stroke-width:2}
.btn.primary{background:var(--brand-dark);color:white;border-color:var(--brand-dark)}
.btn.primary:hover{background:var(--brand-deep)}
.btn.ghost{background:transparent}
.btn.danger{color:var(--danger);border-color:#F3D4D4}
.btn.danger:hover{background:var(--danger-soft)}
.btn.success{background:var(--brand);color:#173A2B;border-color:var(--brand)}
.btn.success:hover{background:#82d64a}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none!important;box-shadow:none!important}
.btn.sm{height:32px;padding:0 12px;font-size:13px;border-radius:10px}
.btn.lg{height:46px;padding:0 24px;font-size:16px;border-radius:14px}

/* ============================================================
   Cards
   ============================================================ */
.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-xl);
  box-shadow:var(--shadow);
  padding:24px;
}
.card-head{
  display:flex;align-items:center;justify-content:space-between;
  gap:14px;margin-bottom:18px;flex-wrap:wrap;
}
.card-head h2{margin:0;font-size:18px;font-weight:700;letter-spacing:-.2px}
.card-head .sub{color:var(--text-2);font-size:13px;margin-top:3px}

/* ============================================================
   Identity gate
   ============================================================ */
.gate{max-width:480px;margin:50px auto;text-align:center}
.gate-icon{
  width:80px;height:80px;border-radius:24px;
  background:linear-gradient(135deg,var(--brand),#7CD344);
  color:#173A2B;display:grid;place-items:center;
  margin:0 auto 22px;box-shadow:0 12px 30px rgba(152,231,92,.3);
}
.gate-icon svg{width:40px;height:40px;stroke-width:1.8}
.gate h2{margin:0 0 8px;font-size:26px;font-weight:800;letter-spacing:-.5px}
.gate p{margin:0 0 26px;color:var(--text-2);font-size:15px}
.gate-form{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-xl);padding:28px;
  box-shadow:var(--shadow-md);text-align:left;
}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.field label{font-size:13px;color:var(--text-2);font-weight:600}
.field input,.field select{
  height:42px;padding:0 14px;border-radius:12px;
  border:1px solid var(--border);background:var(--surface);
  color:var(--text);font-size:15px;outline:none;transition:.15s ease;
}
.field input:focus,.field select:focus{border-color:var(--brand-dark);box-shadow:0 0 0 3px rgba(152,231,92,.2)}
.gate-form .btn{width:100%;justify-content:center;margin-top:6px}

/* ============================================================
   Viewer banner
   ============================================================ */
.viewer-banner{
  background:linear-gradient(135deg,var(--brand-dark),#184944);
  color:white;border-radius:var(--radius-xl);
  padding:20px 24px;margin-bottom:22px;
  display:flex;align-items:center;justify-content:space-between;
  gap:14px;flex-wrap:wrap;box-shadow:0 10px 28px rgba(29,87,81,.16);
}
.viewer-banner .info{display:flex;align-items:center;gap:12px}
.viewer-banner .avatar{
  width:44px;height:44px;border-radius:14px;
  background:rgba(255,255,255,.15);color:white;
  display:grid;place-items:center;font-size:18px;font-weight:800;flex:0 0 44px;
}
.viewer-banner .meta b{font-size:16px}
.viewer-banner .meta span{display:block;font-size:13px;opacity:.7;margin-top:2px}
.viewer-banner .progress-mini{display:flex;align-items:center;gap:10px;font-size:13px}
.viewer-banner .progress-mini .pills{display:flex;gap:6px}
.viewer-banner .pill-s{
  width:28px;height:28px;border-radius:8px;
  display:grid;place-items:center;font-size:12px;font-weight:800;
  background:rgba(255,255,255,.12);
}
.viewer-banner .pill-s.done{background:var(--brand);color:#173A2B}

/* ============================================================
   Hero (home)
   ============================================================ */
.tut-hero{
  background:linear-gradient(135deg,var(--brand-dark),#184944);
  color:white;border-radius:var(--radius-xl);
  padding:32px 34px;margin-bottom:22px;position:relative;overflow:hidden;
  box-shadow:0 12px 36px rgba(29,87,81,.18);
}
.tut-hero:after{
  content:"";position:absolute;width:240px;height:240px;border-radius:50%;
  right:-100px;top:-120px;background:rgba(152,231,92,.18);
}
.tut-hero h1{margin:0;font-size:30px;font-weight:800;letter-spacing:-.8px;position:relative}
.tut-hero p{margin:10px 0 0;color:rgba(255,255,255,.78);max-width:640px;position:relative}
.tut-prep{margin-top:20px;display:grid;grid-template-columns:repeat(4,1fr);gap:10px;position:relative}
.prep-item{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14);
  border-radius:14px;padding:12px 14px;font-size:13px;font-weight:600;color:white;
  display:flex;align-items:center;gap:10px;line-height:1.3;
}
.prep-item svg{width:18px;height:18px;flex:0 0 18px;opacity:.9}
.prep-item small{font-weight:400;opacity:.7;font-size:11px}
.prep-no{
  flex:0 0 22px;width:22px;height:22px;border-radius:7px;
  background:rgba(255,255,255,.18);display:grid;place-items:center;
  font-size:12px;font-weight:800;
}

/* Software overview cards (home) */
.sw-overview{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px}
.sw-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:20px;
  display:flex;flex-direction:column;gap:14px;
  box-shadow:var(--shadow);transition:.18s ease;
}
.sw-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.sw-card .sw-top{display:flex;align-items:center;gap:12px}
.sw-icon{
  width:46px;height:46px;border-radius:14px;flex:0 0 46px;
  display:grid;place-items:center;position:relative;
}
.sw-icon svg{width:24px;height:24px;stroke-width:1.9}
.sw-info{flex:1;min-width:0}
.sw-info b{display:block;font-size:16px}
.sw-info span{display:block;color:var(--text-2);font-size:12px;margin-top:2px}
.sw-card .sw-jump{width:100%;justify-content:center}
.sw-badge{
  position:absolute;top:-8px;right:-8px;
  min-width:22px;height:22px;padding:0 5px;border-radius:999px;
  background:var(--brand);color:#173A2B;border:2px solid var(--surface);
  display:grid;place-items:center;font-size:11px;font-weight:800;
}

/* ============================================================
   Detail page hero
   ============================================================ */
.detail-hero{
  border-radius:var(--radius-xl);padding:30px 34px;margin-bottom:22px;
  position:relative;overflow:hidden;color:white;
  box-shadow:0 12px 36px rgba(29,87,81,.18);
  background:linear-gradient(135deg,var(--brand-dark),#184944);
}
.detail-hero:after{
  content:"";position:absolute;width:220px;height:220px;border-radius:50%;
  right:-90px;top:-110px;background:rgba(152,231,92,.16);
}
.detail-hero .dh-step{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);border-radius:999px;
  padding:5px 14px;font-size:13px;font-weight:700;position:relative;margin-bottom:12px;
}
.detail-hero h1{margin:0;font-size:28px;font-weight:800;letter-spacing:-.7px;position:relative}
.detail-hero p{margin:10px 0 0;color:rgba(255,255,255,.78);position:relative;max-width:680px}

.breadcrumb{
  display:flex;align-items:center;gap:8px;color:var(--text-2);
  font-size:13px;margin-bottom:18px;flex-wrap:wrap;
}
.breadcrumb a{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-dark);font-weight:700;
  background:var(--surface);border:1px solid var(--border);
  border-radius:999px;padding:6px 14px;transition:.16s ease;
}
.breadcrumb a::before{content:"←";font-weight:800}
.breadcrumb a:hover{background:var(--brand-soft);border-color:#D6EFC3;transform:translateX(-1px)}
.breadcrumb .sep{color:var(--text-3)}
.breadcrumb .cur{color:var(--text);font-weight:700}

/* ============================================================
   Heavy detail steps
   ============================================================ */
.heavy-step{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);box-shadow:var(--shadow);
  padding:22px 24px;margin-bottom:14px;
  display:grid;grid-template-columns:52px 1fr;gap:18px;
  transition:.18s ease;
}
.heavy-step:hover{box-shadow:var(--shadow-md);border-color:#D6EFC3}
.hs-no{
  width:52px;height:52px;border-radius:16px;flex:0 0 52px;
  background:linear-gradient(135deg,var(--brand),#7CD344);color:#173A2B;
  display:grid;place-items:center;font-size:22px;font-weight:800;
  box-shadow:0 6px 14px rgba(152,231,92,.32);
}
.hs-body h4{margin:0 0 6px;font-size:18px;line-height:1.35}
.hs-body p{margin:0;color:var(--text-2);font-size:14.5px;line-height:1.7}
.hs-body ol,.hs-body ul{margin:8px 0 0;padding-left:20px;color:var(--text-2);font-size:14.5px;line-height:1.8}
.hs-body li{margin-bottom:3px}
.hs-body b{color:var(--text)}
.hs-note{
  margin-top:12px;padding:11px 14px;border-radius:12px;
  font-size:13.5px;line-height:1.65;display:flex;gap:9px;align-items:flex-start;
}
.hs-note svg{width:17px;height:17px;flex:0 0 17px;margin-top:2px}
.hs-note.tip{background:var(--blue-soft);color:#2B5F91}
.hs-note.warn{background:var(--warn-soft);color:#7A5A10}
.hs-note.ok{background:var(--brand-soft);color:var(--brand-dark)}
.hs-note b{color:inherit}
.hs-note.other{background:var(--surface-soft);color:var(--text-2)}

/* 安装包直接下载卡片（突出显示） */
.dl-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px}
.dl-card{
  position:relative;display:block;
  border:1.5px solid #CDE9B6;border-radius:var(--radius-lg);
  background:linear-gradient(180deg,#F8FDEF,#E9F8DD);
  padding:18px;transition:.18s ease;color:var(--text);
  box-shadow:0 6px 18px rgba(90,160,60,.10);
}
.dl-card:hover{
  border-color:var(--brand);transform:translateY(-3px);
  box-shadow:0 16px 32px rgba(90,160,60,.22);
}
.dl-os{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:800;color:var(--brand-dark);
  background:#fff;border:1px solid #CDE9B6;border-radius:999px;padding:4px 11px;
}
.dl-os svg{width:15px;height:15px;stroke-width:2.2}
.dl-card b{display:block;margin-top:12px;font-size:17px;letter-spacing:-.2px;color:var(--brand-deep)}
.dl-card small{display:block;margin-top:4px;color:var(--text-2);font-size:12.5px}
.dl-cta{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  background:var(--brand-dark);color:#fff;font-weight:800;font-size:13.5px;
  border-radius:999px;padding:9px 18px;transition:.18s ease;
}
.dl-cta svg{width:15px;height:15px;stroke-width:2.6}
.dl-card:hover .dl-cta{background:var(--brand-deep)}

/* ============================================================
   Success / warning callouts
   ============================================================ */
.success{
  margin-top:18px;background:var(--brand-soft);color:var(--brand-dark);
  border-radius:14px;padding:14px 17px;
  display:flex;align-items:flex-start;gap:10px;font-weight:600;font-size:15px;
}
.success svg{width:20px;height:20px;flex:0 0 20px;margin-top:1px}
.warning{
  margin-top:12px;background:var(--warn-soft);color:#7A5A10;
  border-radius:14px;padding:13px 16px;
  display:flex;align-items:flex-start;gap:9px;font-size:14px;
}
.warning svg{width:18px;height:18px;flex:0 0 18px;margin-top:1px}

/* ============================================================
   Submit box
   ============================================================ */
.submit-hint{
  margin:22px 0 -8px;color:var(--brand-dark);
  font-size:14.5px;font-weight:700;
}

/* 浮动"返回首页"按钮（教程页，滚动后出现） */
.back-fab{
  position:fixed;right:24px;bottom:24px;z-index:80;
  display:inline-flex;align-items:center;gap:8px;
  height:46px;padding:0 20px;border-radius:999px;
  background:var(--brand-dark);color:#fff;font-weight:700;font-size:14.5px;
  box-shadow:0 10px 26px rgba(20,40,35,.28);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:.22s ease;
}
.back-fab.show{opacity:1;transform:none;pointer-events:auto}
.back-fab:hover{background:var(--brand-deep);transform:translateY(-2px);color:#fff}
.back-fab svg{width:17px;height:17px;stroke-width:2.4}
.submit-panel{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-xl);box-shadow:var(--shadow-md);
  padding:24px;margin-top:22px;
}
.submit-box{
  display:flex;align-items:center;justify-content:space-between;
  gap:14px;flex-wrap:wrap;
}
.submit-box .tip{display:flex;align-items:center;gap:8px;color:var(--text-2);font-size:14px}
.submit-box .tip svg{width:18px;height:18px;color:var(--brand-dark)}
.submit-box .done-info{display:flex;align-items:center;gap:10px;color:var(--brand-dark);font-weight:700;font-size:15px}
.submit-box .done-info svg{width:22px;height:22px;flex:0 0 22px}
.submit-box.is-done{display:block}
/* 教程正文里的长网址按钮：窄屏下允许换行，不撑破布局 */
.hs-body{min-width:0}
.hs-body .btn{
  white-space:normal;word-break:break-all;text-align:left;
  height:auto;min-height:38px;padding-top:8px;padding-bottom:8px;max-width:100%;
}
.submit-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}

/* 教程页：顶部"准备进度"步骤导航 */
.stepper{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:12px 16px;margin-bottom:18px;
  box-shadow:var(--shadow);
}
.stepper-title{
  font-size:12.5px;font-weight:800;color:var(--text-3);
  letter-spacing:.3px;margin-right:4px;
}
.step-item{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;border:1px solid var(--border);
  background:var(--surface-soft);color:var(--text-2);
  font-size:13.5px;font-weight:700;transition:.16s ease;
}
.step-item:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-soft)}
.step-no{
  width:20px;height:20px;border-radius:50%;background:var(--text-3);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:11.5px;font-weight:800;
}
.step-item.done{border-color:#CDE9B6;background:var(--brand-soft);color:var(--brand-dark)}
.step-item.done .step-no{background:var(--brand-dark)}
.step-item.current{
  border-color:var(--brand-dark);background:var(--brand-dark);color:#fff;
  box-shadow:0 6px 16px rgba(29,87,81,.22);
}
.step-item.current .step-no{background:#fff;color:var(--brand-dark)}
.step-arrow{color:var(--text-3);font-weight:700;font-size:13px}

/* 教程页：完成后"下一步"引导卡片 */
.next-step-card{
  display:flex;flex-direction:column;gap:3px;
  border:1.5px dashed #CDE9B6;border-radius:var(--radius-md);
  background:linear-gradient(180deg,#F8FDEF,#EFF9E6);
  padding:14px 16px;margin-top:14px;
}
.next-step-card .ns-label{font-size:12px;font-weight:800;color:#7A8B84;letter-spacing:.4px}
.next-step-card b{font-size:16px;color:var(--brand-deep)}
.next-step-card span{font-size:13px;color:var(--text-2);line-height:1.6}
.next-step-card.all-done{border-style:solid;border-color:#CDE9B6}

/* 首页：下一步指引条 */
.next-action{
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  border:1.5px solid #CDE9B6;border-radius:var(--radius-xl);
  background:linear-gradient(180deg,#F8FDEF,#E9F8DD);
  padding:18px 22px;margin-bottom:20px;
  box-shadow:0 8px 22px rgba(90,160,60,.12);
}
.next-action .na-icon{
  flex:0 0 46px;width:46px;height:46px;border-radius:14px;
  background:var(--brand-dark);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:800;
}
.next-action .na-body{flex:1 1 240px;display:flex;flex-direction:column;gap:2px;min-width:0}
.next-action .na-label{font-size:12.5px;font-weight:800;color:#7A8B84;letter-spacing:.3px}
.next-action .na-body b{font-size:18px;color:var(--brand-deep)}
.next-action .na-body span{font-size:13.5px;color:var(--text-2)}
.next-action .na-go{margin-left:auto}

/* 首页：卡片完成状态 */
.sw-info .sw-state{
  display:inline-block;width:auto;margin-top:7px;font-size:12px;font-weight:800;
  padding:3px 10px;border-radius:999px;
  background:var(--surface-soft);color:var(--text-3);
}
.sw-info .sw-state.next{background:var(--warn-soft);color:#A8730A}
.sw-info .sw-state.done{background:var(--brand-soft);color:var(--brand-dark)}
.sw-card.is-next{border-color:var(--brand);box-shadow:0 10px 26px rgba(90,160,60,.16)}
.sw-card.is-done{border-color:#CDE9B6}

/* ============================================================
   置顶重要说明
   ============================================================ */
.notice{
  border:1px solid #F1D18A;
  background:linear-gradient(180deg,#FFF9EC,#FFF3D8);
  border-radius:var(--radius-xl);padding:26px 28px;margin-bottom:20px;
  box-shadow:0 10px 26px rgba(190,150,40,.10);
}
.notice-head{display:flex;gap:14px;align-items:flex-start}
.notice-icon{
  flex:0 0 42px;width:42px;height:42px;border-radius:12px;
  background:#F7B733;color:#fff;
  display:flex;align-items:center;justify-content:center;
}
.notice-icon svg{width:24px;height:24px;stroke-width:2.2}
.notice-tag{
  display:inline-block;background:#E8534B;color:#fff;
  font-size:12px;font-weight:800;letter-spacing:.5px;
  padding:3px 10px;border-radius:999px;margin-bottom:8px;
}
.notice h2{font-size:20px;margin:0;color:#5B4A21;line-height:1.55}
.notice h2 b{color:#8A5A00}
.notice-text{margin:14px 0 0;color:#5B513D;font-size:15px;line-height:1.7}
.notice-text b{color:#B23B2E}

/* ============================================================
   Plus 充值海报
   ============================================================ */
.plus-poster{
  margin:18px 0 0;border-radius:var(--radius-xl);overflow:hidden;
  border:1px solid var(--border);background:#0B1B14;
  box-shadow:0 14px 36px rgba(29,87,81,.16);
}
.plus-poster img{display:block;width:100%;height:auto}

/* ============================================================
   Stats
   ============================================================ */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:22px}
.stat-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:20px;position:relative;overflow:hidden;
  box-shadow:var(--shadow);
}
.stat-card .label{color:var(--text-2);font-size:13px;font-weight:600}
.stat-card .value{font-size:34px;font-weight:800;letter-spacing:-1px;margin-top:6px;line-height:1.1}
.stat-card .value .unit{font-size:15px;color:var(--text-2);font-weight:600;margin-left:3px}
.stat-card .hint{color:var(--text-3);font-size:12px;margin-top:6px}
.stat-card .icon{
  position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
}
.stat-card.green .icon{background:var(--brand-soft);color:var(--brand-dark)}
.stat-card.blue .icon{background:var(--blue-soft);color:var(--blue)}
.stat-card.amber .icon{background:var(--warn-soft);color:#B8860B}
.stat-card.teal .icon{background:#E6F4F1;color:var(--brand-dark)}
.stat-card .icon svg{width:20px;height:20px;stroke-width:2}

.progress{height:8px;background:var(--surface-soft);border-radius:999px;overflow:hidden}
.progress > span{
  display:block;height:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--brand),#7CD344);transition:width .5s ease;
}

/* ============================================================
   Tables
   ============================================================ */
.table-wrap{overflow-x:auto;border-radius:var(--radius-md);border:1px solid var(--divider)}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--divider);white-space:nowrap}
th{background:var(--surface-soft);color:var(--text-2);font-weight:600;font-size:13px}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:var(--surface-soft)}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
td.center,th.center{text-align:center}
.pill{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700}
.pill.ok{background:var(--brand-soft);color:var(--brand-dark)}
.pill.no{background:var(--danger-soft);color:#963434}
.pill.mid{background:var(--warn-soft);color:#9A6E12}
.step-cell{text-align:center}
.step-cell .done-badge{display:inline-flex;align-items:center;gap:4px;color:var(--brand-dark);font-weight:700;font-size:13px}
.step-cell .done-badge svg{width:16px;height:16px}
.step-cell .pending{color:var(--text-3);font-size:13px}

/* ============================================================
   Empty state
   ============================================================ */
.empty{text-align:center;padding:48px 24px;color:var(--text-2)}
.empty .e-icon{
  width:64px;height:64px;border-radius:20px;background:var(--surface-soft);
  color:var(--text-3);display:grid;place-items:center;margin:0 auto 14px;
}
.empty .e-icon svg{width:30px;height:30px;stroke-width:1.6}
.empty h3{margin:0 0 6px;color:var(--text);font-size:17px}
.empty p{margin:0;font-size:14px}

/* ============================================================
   Modal
   ============================================================ */
.modal-bg{
  position:fixed;inset:0;background:rgba(20,40,35,.45);backdrop-filter:blur(4px);
  z-index:100;display:none;align-items:center;justify-content:center;padding:20px;
}
.modal-bg.show{display:flex}
.modal{background:var(--surface);border-radius:20px;padding:26px;max-width:440px;width:100%;box-shadow:var(--shadow-md)}
.modal h3{margin:0 0 6px;font-size:19px}
.modal p{margin:0 0 18px;color:var(--text-2);font-size:14px}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:18px}

.filter-bar{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.filter-bar select{
  height:36px;padding:0 12px;border-radius:10px;
  border:1px solid var(--border);background:var(--surface);
  color:var(--text);font-size:13px;outline:none;
}
.filter-bar .count{color:var(--text-2);font-size:13px;margin-left:auto}

.footer{margin-top:40px;text-align:center;color:var(--text-3);font-size:12px;padding:20px 0}

/* ============================================================
   Teaching mock screenshots (教学示意图)
   ============================================================ */
.shot{margin:14px 0 0}
.frame{
  border:1px solid var(--border);border-radius:14px;overflow:hidden;
  background:#fff;box-shadow:0 6px 18px rgba(20,40,35,.06);
}
.frame-bar{
  height:34px;background:#EEF2F0;display:flex;align-items:center;gap:6px;
  padding:0 12px;border-bottom:1px solid var(--border);
}
.frame-bar .dot{width:9px;height:9px;border-radius:50%;flex:0 0 9px}
.dot.r{background:#FF5F57}.dot.y{background:#FEBC2E}.dot.g{background:#28C840}
.frame-url{
  flex:1;margin-left:8px;height:22px;border-radius:6px;background:#fff;
  border:1px solid var(--border);display:flex;align-items:center;gap:6px;
  padding:0 10px;font-size:12px;color:var(--text-2);overflow:hidden;white-space:nowrap;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}
.frame-url svg{width:12px;height:12px;flex:0 0 12px;color:#7C8B85}
.frame-body{padding:20px;background:#FBFDFC}
.shot-cap{
  margin-top:8px;font-size:12.5px;color:var(--text-2);
  display:flex;align-items:center;justify-content:center;gap:6px;text-align:center;
}
.shot-cap b{color:var(--brand-dark)}

/* real screenshot (真实截图) */
.frame.shot-real .frame-body{padding:0;background:#fff}
.frame.shot-real img{display:block;width:100%;height:auto}
.shot-real-tag{
  position:absolute;top:9px;right:10px;z-index:2;
  background:#E8534B;color:#fff;font-size:11px;font-weight:700;
  padding:3px 9px;border-radius:999px;letter-spacing:.3px;
}
.frame.shot-real{position:relative}

/* red highlight annotation */
.ann{position:relative;display:inline-flex}
.ann-box{outline:2.5px solid #E8534B;outline-offset:3px;border-radius:9px}
.ann-tag{
  position:absolute;top:-12px;left:-6px;z-index:3;
  background:#E8534B;color:#fff;font-size:11px;font-weight:700;
  padding:2px 8px;border-radius:999px;white-space:nowrap;
}
.ann-tag::after{
  content:"";position:absolute;left:7px;bottom:-4px;width:8px;height:8px;
  background:#E8534B;transform:rotate(45deg);
}

/* mock ui atoms */
.m-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:34px;padding:0 18px;border-radius:9px;font-size:13px;font-weight:700;
  background:var(--brand-dark);color:#fff;
}
.m-btn.g{background:var(--brand);color:#173A2B}
.m-btn.w{background:#fff;border:1px solid var(--border);color:var(--text)}
.m-btn.qq{background:#07C160}

.m-qr{width:104px;height:104px;background:#fff;border:1px solid var(--border);border-radius:10px;padding:9px;flex:0 0 104px}
.m-qr i{
  display:block;width:100%;height:100%;border-radius:4px;background-color:#fff;
  background-image:
    linear-gradient(90deg,#173A2B 40%,transparent 40%,transparent 60%,#173A2B 60%),
    linear-gradient(#173A2B 40%,transparent 40%,transparent 60%,#173A2B 60%);
  background-size:11px 11px;
}

.m-row{display:flex;align-items:center;gap:14px}
.m-card{border:1px solid var(--border);border-radius:12px;background:#fff;padding:12px 14px}
.m-line{height:9px;border-radius:5px;background:#E8EFEC}
.m-chip{
  display:inline-block;padding:3px 9px;border-radius:999px;font-size:11px;font-weight:700;
  background:var(--brand-soft);color:var(--brand-dark);
}
.m-avatar{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;
  display:grid;place-items:center;font-weight:800;font-size:14px;
  background:var(--brand);color:#173A2B;
}
.m-bubble{max-width:70%;padding:10px 14px;border-radius:14px;font-size:13.5px;line-height:1.5}
.m-bubble.me{background:var(--brand-dark);color:#fff;margin-left:auto;border-bottom-right-radius:4px}
.m-bubble.ai{background:#F0F4F2;color:var(--text);border-bottom-left-radius:4px}

.m-appicon{
  width:54px;height:54px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),#7CD344);color:#173A2B;
  box-shadow:0 6px 14px rgba(152,231,92,.3);flex:0 0 54px;
}
.m-appicon svg{width:28px;height:28px;stroke-width:1.9}
.m-appicon.blue{background:linear-gradient(135deg,#5AA0E6,#3D7FC4);color:#fff}
.m-appname{font-size:12px;color:var(--text-2);text-align:center;margin-top:6px}

.m-download{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.m-dlcard{border:1px solid var(--border);border-radius:12px;background:#fff;padding:14px;text-align:center}
.m-dlcard b{display:block;font-size:14px;margin-bottom:2px}
.m-dlcard small{color:var(--text-2);font-size:11.5px}
.m-dlcard .m-btn{height:30px;padding:0 14px;font-size:12px;margin-top:8px;width:100%}

.m-list{background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden}
.m-listitem{
  display:flex;align-items:center;gap:10px;padding:11px 14px;
  border-bottom:1px solid var(--divider);font-size:13px;
}
.m-listitem:last-child{border-bottom:none}
.m-fileicon{
  width:30px;height:30px;border-radius:8px;background:var(--blue-soft);color:var(--blue);
  display:grid;place-items:center;flex:0 0 30px;font-size:11px;font-weight:800;
}
.m-sysrow{display:flex;gap:14px;flex-wrap:wrap}
.m-syscard{
  flex:1;min-width:150px;border:1px solid var(--border);border-radius:12px;
  background:#fff;padding:14px;display:flex;align-items:center;gap:12px;
}
.m-syslogo{
  width:40px;height:40px;border-radius:11px;flex:0 0 40px;display:grid;place-items:center;
  background:var(--surface-soft);color:var(--text);
}
.m-syslogo svg{width:22px;height:22px;stroke-width:1.9}
.m-syscard b{display:block;font-size:13.5px}
.m-syscard small{color:var(--text-2);font-size:11.5px}

.m-phone{
  width:172px;border:7px solid #1F2E28;border-radius:26px;background:#1F2E28;
  box-shadow:0 10px 24px rgba(0,0,0,.18);flex:0 0 auto;
}
.m-phone .screen{background:#fff;border-radius:19px;overflow:hidden;min-height:252px}
.m-phone .ph-top{background:#EDEDED;padding:8px 12px;font-size:11px;color:#666;text-align:center;font-weight:700}
.m-phone .ph-body{padding:14px}
.m-scanbox{
  border:2px dashed #B7C4BE;border-radius:12px;height:130px;margin-top:10px;
  display:grid;place-items:center;color:var(--text-3);font-size:11.5px;text-align:center;
}
.m-scanline{height:2px;background:#07C160;border-radius:2px;margin-top:-64px}

.m-note{
  display:flex;gap:8px;align-items:flex-start;font-size:12.5px;color:var(--text-2);
  background:var(--surface-soft);border-radius:10px;padding:9px 12px;margin-top:12px;
}

/* ============================================================
   手机端教程：平台切换标签
   ============================================================ */
.mtabs{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 16px}
.mtab{
  display:inline-flex;align-items:center;gap:8px;
  height:44px;padding:0 20px;border-radius:999px;
  border:1px solid var(--border);background:var(--surface);
  color:var(--text-2);font-size:14.5px;font-weight:700;transition:.16s ease;
}
.mtab svg{width:18px;height:18px;stroke-width:1.9}
.mtab:hover{border-color:var(--brand);color:var(--brand-dark);background:var(--brand-soft)}
.mtab.active{
  background:var(--brand-dark);color:#fff;border-color:var(--brand-dark);
  box-shadow:0 6px 16px rgba(29,87,81,.22);
}
.mpane[hidden]{display:none}
.mpane-title{
  font-size:19px;font-weight:800;letter-spacing:-.3px;
  margin:0 0 14px;padding-left:12px;border-left:4px solid var(--brand);
}

/* 首页：手机端教程入口板块 */
.mobile-entry{
  margin-top:22px;padding:22px 24px;flex-wrap:wrap;
  display:flex;align-items:center;gap:18px;
  border:1px solid #CFE4F2;border-radius:var(--radius-xl);
  background:linear-gradient(180deg,#F7FBFD,#EBF4FB);
  box-shadow:var(--shadow);
}
.mobile-entry .me-icon{
  flex:0 0 52px;width:52px;height:52px;border-radius:16px;
  background:var(--blue-soft);color:var(--blue);display:grid;place-items:center;
}
.mobile-entry .me-icon svg{width:26px;height:26px;stroke-width:1.9}
.mobile-entry .me-body{flex:1 1 260px;min-width:0}
.mobile-entry .me-body h2{margin:0 0 4px;font-size:18px;font-weight:800;letter-spacing:-.2px}
.mobile-entry .me-body p{margin:0;color:var(--text-2);font-size:14px;line-height:1.6}
.mobile-entry .me-actions{display:flex;gap:10px;flex-wrap:wrap}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:960px){
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .tut-prep{grid-template-columns:1fr 1fr}
  .sw-overview{grid-template-columns:1fr}
}
@media (max-width:600px){
  .app{padding:20px 14px 40px}
  .site-header-inner{padding:10px 14px}
  .stat-grid{grid-template-columns:1fr 1fr}
  .tut-prep{grid-template-columns:1fr}
  .notice{padding:20px 18px;border-radius:var(--radius-lg)}
  .notice-head{gap:11px}
  .notice-icon{flex-basis:36px;width:36px;height:36px;border-radius:10px}
  .notice-icon svg{width:20px;height:20px}
  .notice h2{font-size:17px}
  .notice-text{font-size:14px}
  .gate{margin:30px auto}
  .brand-logo{height:34px}
  .brand-text h1{font-size:15px}
  .brand-text p{display:none}
  .heavy-step{grid-template-columns:1fr;gap:12px}
  .hs-no{width:44px;height:44px;flex-basis:44px;font-size:18px}
  .site-nav{gap:4px}
  .nav-link{padding:7px 10px;font-size:13px}
  .frame-body{padding:14px}
  .m-download{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:1fr}
  .back-fab{right:14px;bottom:14px;height:44px;padding:0 16px;font-size:14px}
  .stepper{padding:10px 12px;gap:6px}
  .step-item{padding:6px 11px;font-size:12.5px;gap:6px}
  .step-no{width:18px;height:18px;font-size:11px}
  .step-arrow{display:none}
  .next-action{padding:16px;gap:12px}
  .next-action .na-go{margin-left:0;width:100%;justify-content:center}
  .m-phone{width:150px}
  .m-bubble{max-width:85%}
  .m-row{gap:14px}
  .mobile-entry{padding:18px 18px;gap:14px}
  .mtab{height:40px;padding:0 15px;font-size:13.5px}
}