/* ============================================================
   现代毛玻璃玻璃拟态 · 浅色主题
   - 半透明卡片 + backdrop-filter 模糊
   - 细浅白边框 · 大圆角 · 柔和外阴影 + 细微内高光
   - 青蓝/淡紫低饱和点缀微光 · 极简留白 · 高可读性
   - 背景不做图，交由外部；此处仅提供浅色基座 + 柔和微光
   ============================================================ */
:root {
  /* 浅色基座 */
  --bg: #f2f5fb;
  --panel: rgba(255, 255, 255, 0.55);
  --panel-solid: #ffffff;
  --border: rgba(255, 255, 255, 0.65);
  --border-soft: rgba(148, 163, 184, 0.22);

  /* 文字层级 */
  --text: #1e2a3d;
  --text-2: #526079;
  --muted: #8492a9;

  /* 青蓝 / 淡紫 低饱和点缀 */
  --cyan: #22c3e0;
  --cyan-soft: rgba(34, 195, 224, 0.14);
  --violet: #a78bfa;
  --violet-soft: rgba(167, 139, 250, 0.14);
  --primary: #4f8cff;
  --primary-soft: rgba(79, 140, 255, 0.14);
  --primary2: #7aa0ff;

  --green: #2fbf8f;
  --green-soft: rgba(47, 191, 143, 0.14);
  --red: #ef6b78;
  --red-soft: rgba(239, 107, 120, 0.12);
  --amber: #e8a23b;
  --amber-soft: rgba(232, 162, 59, 0.14);

  /* 玻璃 */
  --blur: blur(20px) saturate(150%);
  --radius: 20px;
  --radius-sm: 12px;
  --shadow-card: 0 12px 40px rgba(31, 38, 135, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.7);
  --shadow-hover: 0 16px 48px rgba(31, 38, 135, 0.14), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  --shadow-float: 0 8px 28px rgba(31, 38, 135, 0.10), inset 0 1px 0 rgba(255, 255, 255, 0.8);

  --ease: cubic-bezier(.4, 0, .2, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

/* 背景：使用 bj.jpg（public/bj.jpg，CSS 相对路径 ../bj.jpg）。
   叠加一层浅色薄纱保持浅色主题与文字可读性；玻璃卡片会模糊其后的图片。 */
body {
  min-height: 100vh;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  background:
    linear-gradient(rgba(242, 245, 251, 0.82), rgba(242, 245, 251, 0.82)),
    url('../bj.jpg') center/cover no-repeat fixed;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 28px;
  position: sticky; top: 0; z-index: 20;
  background: rgba(255, 255, 255, 0.55);
  -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--border-soft);
}
.topbar .brand { font-weight: 700; font-size: 17px; letter-spacing: .4px; display: flex; align-items: center; }
.topbar .brand .brand-logo { margin-right: 6px; font-size: 18px; display: flex; }
.topbar .brand .brand-img { height: 26px; width: auto; border-radius: 7px; }
.topbar nav a {
  margin-left: 20px; color: var(--muted); font-size: 14px; font-weight: 500;
  padding: 7px 12px; border-radius: 10px; transition: .18s var(--ease);
}
.topbar nav a:hover { color: var(--text); background: rgba(255, 255, 255, 0.6); text-decoration: none; }
.topbar nav a.active { color: var(--primary); background: var(--primary-soft); }

.container { max-width: 1180px; margin: 0 auto; padding: 28px 24px 48px; }

/* ---------- 玻璃卡片 ---------- */
.card {
  background: var(--panel);
  -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 26px 28px;
  margin-bottom: 22px;
  transition: box-shadow .25s var(--ease), transform .25s var(--ease);
}
.card:hover { box-shadow: var(--shadow-hover); }
.card h2 { margin: 0 0 18px; font-size: 15px; font-weight: 650; display: flex; align-items: center; gap: 8px; color: var(--text); }
.card h2 .ico { font-size: 17px; display: inline-flex; align-items: center; justify-content: center; color: var(--primary); }
.card h2 .ico svg { width: 18px; height: 18px; }
.btn-ico { width: 15px; height: 15px; }
.hint { color: var(--muted); font-size: 12.5px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: none; cursor: pointer;
  padding: 10px 18px; border-radius: 12px;
  font-size: 14px; font-weight: 600; color: #fff;
  background: linear-gradient(135deg, var(--cyan), var(--primary));
  box-shadow: 0 6px 18px rgba(79, 140, 255, 0.28);
  transition: .2s var(--ease), box-shadow .2s var(--ease), transform .1s var(--ease);
}
.btn:hover { box-shadow: 0 8px 26px rgba(79, 140, 255, 0.38), 0 0 0 4px var(--primary-soft); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .45; cursor: not-allowed; box-shadow: none; transform: none; }
.btn.ghost {
  background: rgba(255, 255, 255, 0.6); color: var(--text-2);
  border: 1px solid var(--border-soft); box-shadow: none;
}
.btn.ghost:hover { color: var(--primary); border-color: rgba(79, 140, 255, .4); box-shadow: 0 0 0 4px var(--primary-soft); }
.btn.green { background: linear-gradient(135deg, #3dd6a5, var(--green)); box-shadow: 0 6px 18px rgba(47, 191, 143, 0.26); }
.btn.green:hover { box-shadow: 0 8px 26px rgba(47, 191, 143, 0.36), 0 0 0 4px var(--green-soft); }
.btn.red { background: transparent; color: var(--red); border: 1px solid rgba(239, 107, 120, .4); box-shadow: none; }
.btn.red:hover { background: var(--red-soft); border-color: var(--red); box-shadow: 0 0 0 4px var(--red-soft); }
.btn.sm { padding: 6px 11px; font-size: 12.5px; border-radius: 10px; }
.btn-lg { padding: 13px 30px; font-size: 16px; border-radius: 14px; }

/* ---------- 输入控件（圆角统一） ---------- */
input[type=text], input[type=password], input[type=number], select, textarea {
  background: rgba(255, 255, 255, 0.7);
  color: var(--text);
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  padding: 10px 13px; font-size: 14px; width: 100%;
  outline: none; transition: .18s var(--ease);
}
input:focus, select:focus, textarea:focus {
  border-color: rgba(79, 140, 255, .5);
  box-shadow: 0 0 0 4px var(--primary-soft);
  background: #fff;
}
textarea { font-family: "SF Mono", Consolas, "Courier New", monospace; line-height: 1.55; }

/* ---------- 落地页 ---------- */
.hero { text-align: center; padding: 86px 20px 60px; }
.hero-badge {
  display: inline-block; padding: 8px 20px; border-radius: 40px;
  background: rgba(255, 255, 255, 0.6); color: var(--primary);
  font-size: 13px; font-weight: 600; letter-spacing: .5px; margin-bottom: 24px;
  border: 1px solid var(--border);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .6), 0 8px 30px rgba(79, 140, 255, .14), inset 0 1px 0 rgba(255, 255, 255, .8);
  -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur);
}
.hero-title {
  font-size: clamp(32px, 5.2vw, 50px);
  margin: 0 0 20px; letter-spacing: .5px; font-weight: 800; line-height: 1.18; color: var(--text);
  text-shadow: 0 2px 24px rgba(79, 140, 255, .10);
}
.hero-sub {
  color: var(--text-2); font-size: 16.5px; max-width: 700px; margin: 0 auto 34px; line-height: 1.9;
}
.hero-sub b { color: var(--text); }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.sec-title { text-align: center; font-size: 26px; margin: 56px 0 26px; font-weight: 750; letter-spacing: .3px; color: var(--text); }
.tool-head { text-align: center; padding: 12px 0 24px; }
.tool-head h1 { margin: 0 0 8px; font-size: 28px; font-weight: 750; color: var(--text); }

.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.feature {
  background: var(--panel); border: 1px solid var(--border);
  -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur);
  border-radius: var(--radius); box-shadow: var(--shadow-card);
  padding: 26px 26px 24px; transition: .25s var(--ease);
}
.feature:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: rgba(34, 195, 224, .35); }
.fe-ico {
  width: 50px; height: 50px; border-radius: 14px; margin-bottom: 16px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--cyan-soft), var(--violet-soft));
  color: var(--primary);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .7), 0 4px 12px rgba(79, 140, 255, .12);
}
.fe-ico svg { width: 26px; height: 26px; }
.fe-title { font-weight: 700; font-size: 15.5px; margin-bottom: 7px; color: var(--text); }
.fe-desc { color: var(--muted); font-size: 13.5px; line-height: 1.8; }

.steps { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 10px; }
.step {
  flex: 1; min-width: 150px; max-width: 200px; text-align: center;
  background: var(--panel); border: 1px solid var(--border);
  -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur);
  border-radius: 16px; box-shadow: var(--shadow-float); padding: 20px 14px 18px;
}
.step b {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--violet)); color: #fff;
  margin-bottom: 12px; box-shadow: 0 4px 14px rgba(34, 195, 224, .32);
}
.step-title { font-size: 14px; color: var(--text); font-weight: 650; margin-bottom: 4px; }
.step-desc { font-size: 12.5px; color: var(--muted); }
section#tool, section#features, section#steps { scroll-margin-top: 76px; }

/* ---------- 编辑区 ---------- */
.editor-wrap { position: relative; }
#editor { width: 100%; min-height: 380px; resize: vertical; font-size: 13px; }
.statbar { display: flex; gap: 18px; flex-wrap: wrap; color: var(--muted); font-size: 12.5px; margin-top: 10px; }
.statbar b { color: var(--text); font-weight: 600; }

.upload-zone {
  border: 1.5px dashed var(--border-soft); border-radius: 16px;
  padding: 24px; text-align: center; color: var(--muted);
  cursor: pointer; transition: .2s var(--ease); margin-bottom: 14px;
  background: rgba(255, 255, 255, 0.35);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.upload-zone .up-ico { width: 36px; height: 36px; opacity: .75; }
.upload-zone:hover, .upload-zone.drag { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }

/* ---------- 卡密 ---------- */
.card-key-row { display: flex; gap: 12px; align-items: center; }
.card-key-row input { text-transform: uppercase; letter-spacing: 2px; font-family: Consolas, monospace; flex: 1; }
.verify-status { margin-top: 12px; font-size: 13.5px; color: var(--text-2); }
.verify-status .ok { color: var(--green); font-weight: 600; }
.verify-status .err { color: var(--red); font-weight: 600; }

/* ---------- 功能开关 ---------- */
.opt-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.opt-item {
  background: rgba(255, 255, 255, 0.5); border: 1px solid var(--border-soft); border-radius: 14px;
  padding: 13px 15px; cursor: pointer; display: flex; align-items: flex-start; gap: 11px;
  transition: .2s var(--ease); user-select: none;
}
.opt-item:hover { border-color: rgba(79, 140, 255, .4); box-shadow: 0 0 0 4px var(--primary-soft); }
.opt-item input { width: 17px; height: 17px; margin-top: 2px; accent-color: var(--primary); }
.opt-item .opt-title { font-weight: 600; font-size: 14px; color: var(--text); }
.opt-item .opt-desc { color: var(--muted); font-size: 12px; }
.opt-item.disabled { opacity: .5; }

.level-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.level-btn {
  padding: 9px 18px; border-radius: 12px; border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.5); color: var(--text-2); cursor: pointer; font-size: 13.5px; font-weight: 600;
  transition: .18s var(--ease);
}
.level-btn:hover { border-color: rgba(79, 140, 255, .4); color: var(--primary); }
.level-btn.active { border-color: transparent; color: #fff; background: linear-gradient(135deg, var(--cyan), var(--primary)); box-shadow: 0 6px 16px rgba(79, 140, 255, .3); }

/* 输入类型切换（HTML 页面 / JS 文件），复用等级按钮的视觉语言 */
.itype-btn {
  padding: 7px 16px; border-radius: 11px; border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.5); color: var(--text-2); cursor: pointer; font-size: 13px; font-weight: 600;
  transition: .18s var(--ease);
}
.itype-btn:hover { border-color: rgba(79, 140, 255, .4); color: var(--primary); }
.itype-btn.active { border-color: transparent; color: #fff; background: linear-gradient(135deg, var(--cyan), var(--primary)); box-shadow: 0 6px 16px rgba(79, 140, 255, .3); }

/* ---------- 结果 ---------- */
.result-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
#output { width: 100%; min-height: 220px; resize: vertical; font-size: 12px; color: #33415c; background: rgba(244, 247, 252, 0.8); }
.metric-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: 12px; margin: 14px 0; }
.metric { background: rgba(255,255,255,0.5); border: 1px solid var(--border-soft); border-radius: 14px; padding: 12px 14px; }
.metric .label { color: var(--muted); font-size: 12px; }
.metric .value { font-size: 18px; font-weight: 700; color: var(--text); }

/* ---------- 登录 / 统计 ---------- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: 14px; }
.stat-card { background: rgba(255,255,255,0.5); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow-float); padding: 18px; text-align: center; }
.stat-card .num { font-size: 26px; font-weight: 800; color: var(--text); }
.stat-card .lab { color: var(--muted); font-size: 12.5px; }

.login-box { max-width: 400px; margin: 8vh auto; padding: 42px 38px; }
/* 登录框更明显的毛玻璃：半透明 + 更强模糊，让背景图透出来 */
.login-box {
  background: rgba(255, 255, 255, 0.30);
  -webkit-backdrop-filter: blur(30px) saturate(170%);
  backdrop-filter: blur(30px) saturate(170%);
  border: 1px solid rgba(255, 255, 255, 0.65);
  box-shadow: 0 20px 60px rgba(31, 38, 135, 0.14), inset 0 1px 0 rgba(255, 255, 255, 0.6);
}
.login-head { text-align: center; margin-bottom: 30px; }
.login-title { font-size: 23px; font-weight: 750; margin: 0 0 6px; color: var(--text); letter-spacing: .3px; }
.login-sub { font-size: 13px; color: var(--muted); margin: 0; }
.login-btn { width: 100%; margin-top: 6px; padding: 12px; font-size: 15px; justify-content: center; }

.input-wrap { position: relative; }
.input-wrap .input-ico { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: 15px; pointer-events: none; }
.input-wrap input { padding-left: 40px; }
.field { margin-bottom: 15px; }
.field label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 6px; font-weight: 500; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px,1fr)); gap: 14px; }
.form-grid .field { margin-bottom: 0; }

/* 无限次勾选框：放大、与相邻输入框上下居中对齐 */
.unlimited-field { display: flex; align-items: center; }
.unlimited-field .label-spacer { display: block; height: 25px; } /* 补偿其它字段 label 占的高度，使复选框与输入框对齐 */
.unlimited-field .checkbox-inline {
  display: flex; align-items: center; gap: 10px;
  font-size: 15px; font-weight: 600; color: var(--text);
  margin: 0; cursor: pointer; user-select: none;
}
.unlimited-field .checkbox-inline input[type="checkbox"] {
  width: 20px; height: 20px; margin: 0;
  accent-color: var(--primary, #4f7cff); cursor: pointer;
}

/* ---------- 提示条 ---------- */
.toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.7); color: var(--text);
  -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur);
  border: 1px solid var(--border); border-radius: 14px;
  padding: 11px 22px; font-size: 13.5px; z-index: 100;
  opacity: 0; transition: .25s var(--ease); pointer-events: none; box-shadow: var(--shadow-float);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(-4px); }
.toast.ok { border-color: rgba(47, 191, 143, .5); color: var(--green); }
.toast.err { border-color: rgba(239, 107, 120, .5); color: var(--red); }

/* ---------- 通用 ---------- */
.hidden { display: none !important; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.mt { margin-top: 14px; }
.footer { text-align: center; padding: 30px 16px 34px; margin-top: 10px; }
.footer-main { font-size: 13px; color: var(--text-2); margin-bottom: 9px; }
.footer-meta { display: flex; flex-direction: column; align-items: center; gap: 4px; font-size: 12px; color: var(--muted); }
.footer-copy, .footer-icp { display: inline-flex; align-items: center; gap: 6px; }
.footer-copy:empty, .footer-icp:empty { display: none; }
.footer-icp a { color: var(--muted); text-decoration: none; transition: .18s var(--ease); }
.footer-icp a:hover { color: var(--primary); text-decoration: underline; }

/* ---------- 后台：左侧菜单 ---------- */
.admin-layout { display: flex; gap: 22px; align-items: flex-start; min-height: calc(100vh - 120px); }
.sidebar {
  width: 214px; flex-shrink: 0; position: sticky; top: 76px;
  background: var(--panel); -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur);
  border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-card);
  padding: 14px 10px;
}
.menu { display: flex; flex-direction: column; gap: 2px; }
.menu-group { font-size: 11.5px; color: var(--muted); padding: 10px 12px 4px; letter-spacing: 1px; }
.menu-item {
  display: flex; align-items: center; gap: 9px;
  padding: 10px 12px; border-radius: 11px;
  color: var(--text-2); font-size: 14px; cursor: pointer;
  transition: .18s var(--ease); user-select: none;
}
.menu-item svg { width: 16px; height: 16px; flex-shrink: 0; }
.menu-item:hover { background: rgba(255, 255, 255, 0.6); color: var(--text); }
.menu-item.active { color: #fff; background: linear-gradient(135deg, var(--cyan), var(--violet)); box-shadow: 0 6px 16px rgba(167, 139, 250, .3); font-weight: 600; }
.admin-main { flex: 1; min-width: 0; }
.panel { display: none; }
.panel.active { display: block; }

/* ---------- Logo / Favicon 上传 ---------- */
.upload-row { display: flex; gap: 26px; flex-wrap: wrap; margin-bottom: 20px; }
.upload-cell { flex: 1; min-width: 200px; }
.upload-cell > label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 7px; font-weight: 500; }
.logo-preview {
  width: 96px; height: 96px; border: 1.5px dashed var(--border-soft); border-radius: 16px;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
  background: rgba(255, 255, 255, 0.5); margin-bottom: 9px;
}
.logo-preview.sm { width: 48px; height: 48px; border-radius: 12px; }
.logo-preview img { max-width: 100%; max-height: 100%; object-fit: contain; }
.logo-preview img[src=""] { display: none; }

/* ---------- 系统监控 ---------- */
.mon-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-bottom: 18px; }
.mon-item { background: rgba(255,255,255,0.5); border: 1px solid var(--border-soft); border-radius: 14px; padding: 15px; }
.mon-label { color: var(--muted); font-size: 12.5px; margin-bottom: 6px; }
.mon-val { font-size: 21px; font-weight: 800; color: var(--text); margin-bottom: 11px; }
.bar { height: 8px; background: rgba(148, 163, 184, 0.18); border-radius: 6px; overflow: hidden; }
.bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--cyan), var(--green)); border-radius: 6px; transition: width .6s var(--ease); }
.bar i.warn { background: linear-gradient(90deg, var(--amber), var(--red)); }
.mon-meta { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; }
.mon-meta > div { background: rgba(255,255,255,0.5); border: 1px solid var(--border-soft); border-radius: 12px; padding: 11px 13px; display: flex; justify-content: space-between; align-items: center; }
.mon-meta span { color: var(--muted); font-size: 12.5px; }
.mon-meta b { font-size: 13px; color: var(--text); font-weight: 600; }

/* ---------- 批量操作条 ---------- */
.bulkbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.search-input { max-width: 220px; }

/* ---------- 表格（分割线低透明度） ---------- */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 12px 14px; text-align: left; border-bottom: 1px solid rgba(148, 163, 184, 0.16); }
th { color: var(--muted); font-weight: 600; font-size: 12px; white-space: nowrap; }
td { white-space: nowrap; color: var(--text-2); }
tr:hover td { background: rgba(79, 140, 255, 0.05); }

.badge { padding: 3px 10px; border-radius: 30px; font-size: 11.5px; font-weight: 600; }
.badge.active { background: var(--green-soft); color: var(--green); }
.badge.expired { background: var(--amber-soft); color: var(--amber); }
.badge.disabled { background: rgba(148, 163, 184, 0.16); color: var(--muted); }
.badge.exhausted { background: var(--red-soft); color: var(--red); }

/* ---------- 响应式（含前台落地页/加密页） ---------- */
@media (max-width: 768px) {
  .topbar { padding: 12px 16px; }
  .topbar nav a { margin-left: 12px; padding: 6px 10px; }
  .container { padding: 20px 16px 40px; }
  .card { padding: 20px 18px; }
  .hero { padding: 52px 16px 36px; }
  .hero-title { font-size: clamp(28px, 7vw, 34px); line-height: 1.25; }
  .hero-sub { font-size: 15px; line-height: 1.8; }
  .steps { flex-direction: column; align-items: stretch; }
  .step { max-width: none; }
  .feature-grid { grid-template-columns: 1fr; }
  .admin-layout { flex-direction: column; }
  .sidebar { width: 100%; position: static; display: flex; overflow-x: auto; }
  .menu { flex-direction: row; gap: 4px; flex-wrap: wrap; }
  .menu-group { display: none; }
  .menu-item { white-space: nowrap; }
}