/* ==========================================================================
   VPNMK · components.css
   首屏线路标记台装置 / 分区家具 / 台账对照 / 拼盘 / 套餐 / 线路表 /
   平台卡 / 文章卡 / tab / toc / FAQ / callout / 文末推广块 / 悬浮 CTA /
   设计预览页示例类
   ========================================================================== */

/* ==========================================================================
   1. Hero 与「线路标记台」装置
   ========================================================================== */

.hero{
  position:relative;
  isolation:isolate;
  overflow-x:clip;
  display:flex;
  align-items:center;
  min-height:calc(100vh - var(--nav-h));
  min-height:calc(100svh - var(--nav-h));
  padding-top:44px;
  padding-bottom:52px;
}
.hero::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:calc(-1 * var(--nav-h));
  height:calc(100% + var(--nav-h));
  z-index:-2;
  pointer-events:none;
  background:
    radial-gradient(88% 64% at 70% -8%,var(--warm-22) 0%,var(--warm-06) 40%,var(--clear) 68%),
    radial-gradient(56% 46% at 12% 0%,var(--accent-07) 0%,var(--clear) 62%);
}
.hero::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:calc(-1 * var(--nav-h));
  height:calc(100% + var(--nav-h));
  z-index:-1;
  pointer-events:none;
  background-image:radial-gradient(var(--ink-16) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.28;
  -webkit-mask-image:linear-gradient(to bottom,var(--text) 0%,var(--text) 38%,transparent 80%);
  mask-image:linear-gradient(to bottom,var(--text) 0%,var(--text) 38%,transparent 80%);
}

.hero-grid{
  position:relative;
  width:100%;
  display:grid;
  grid-template-columns:minmax(0,1fr) 600px;
  gap:56px;
  align-items:center;
}

.hero-copy{
  position:relative;
  z-index:2;
  max-width:580px;
  min-width:0;
}

.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:29px;
  padding:0 13px 0 10px;
  border-radius:var(--r-pill);
  border:1px solid var(--accent-32);
  background:var(--accent-04);
  color:var(--accent-dark);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge-dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
  flex:none;
}
.badge-sep{
  color:var(--accent-32);
  font-weight:400;
}

.hero-title{
  margin-top:22px;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(30px,3.9vw,58px);
  line-height:1.12;
  letter-spacing:-.03em;
  color:var(--text);
}
.title-brand{letter-spacing:-.02em}
.title-key{color:var(--accent-dark)}

.hero-cta{
  margin-top:26px;
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
}

.hero-lede{
  margin-top:20px;
  font-size:15.5px;
  line-height:1.72;
  color:var(--text-muted);
  letter-spacing:.005em;
}
.hero-lede strong{color:var(--text);font-weight:600}

.hero-trust{
  margin-top:20px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  font-size:12.5px;
  line-height:1.9;
  color:var(--text-muted);
}
.hero-trust span{
  display:inline-flex;
  align-items:center;
  white-space:nowrap;
}
.hero-trust span + span::before{
  content:"";
  width:3px;
  height:3px;
  border-radius:50%;
  background:var(--border-strong);
  margin:0 10px;
  flex:none;
}

.plat-row{
  margin-top:24px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 18px;
}
.plat{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:500;
  color:var(--text-muted);
  letter-spacing:.01em;
}
.plat svg{
  width:15px;
  height:15px;
  color:var(--text-soft);
  flex:none;
}

.flag-row{
  margin-top:12px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 16px;
}
.flag-item{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:500;
  color:var(--text-muted);
  letter-spacing:.01em;
}
.flag{
  width:21px;
  height:14px;
  border-radius:3.4px;
  box-shadow:0 0 0 1px var(--border),0 1px 2px var(--ink-06);
  flex:none;
}
.f-red{fill:var(--flag-red)}
.f-crimson{fill:var(--flag-crimson)}
.f-blue{fill:var(--flag-blue)}
.f-navy{fill:var(--flag-navy)}
.f-white{fill:var(--flag-white)}
.f-gold{fill:var(--flag-gold)}

/* ---------- 装置本体 ---------- */

.hero-stage{
  position:relative;
  z-index:1;
  min-width:0;
}

.device{
  position:relative;
  border-radius:var(--r-xl);
  border:1px solid var(--border);
  background:var(--bg-panel3);
  padding:7px;
  box-shadow:var(--shadow-device);
}
.device-inner{
  border-radius:calc(var(--r-xl) - 8px);
  background:var(--bg-panel);
  overflow:hidden;
  box-shadow:inset 0 0 0 1px var(--border),var(--shadow-inset);
}

.device-chrome{
  display:flex;
  align-items:center;
  gap:10px;
  height:38px;
  padding:0 14px;
  background:var(--bg-panel2);
  border-bottom:1px solid var(--border);
}
.chrome-dots{
  display:inline-flex;
  gap:5px;
  flex:none;
}
.chrome-dots i{
  display:block;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--border-strong);
}
.chrome-title{
  font-size:12px;
  font-weight:600;
  color:var(--text);
  letter-spacing:.02em;
}
.chrome-tools{
  margin-left:auto;
  color:var(--text-soft);
  display:inline-flex;
  align-items:center;
}
.chrome-tools svg{width:13px;height:13px}

.device-body{
  display:grid;
  grid-template-columns:1.32fr 1fr .66fr;
  gap:10px;
  padding:16px;
  background:var(--bg-panel);
}

.pane{
  display:flex;
  flex-direction:column;
  min-width:0;
  border-radius:var(--r-md);
}
.pane-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:6px;
  margin-bottom:8px;
  padding:0 2px;
}
.pane-title{
  font-size:11px;
  font-weight:600;
  color:var(--text);
  letter-spacing:.03em;
}
.pane-meta{
  font-family:var(--font-mono);
  font-size:9px;
  color:var(--text-soft);
  letter-spacing:.04em;
  white-space:nowrap;
}

.pane-regions{
  background:var(--bg-panel);
  border:1px solid var(--border);
  padding:10px 10px 8px;
}
.region-list{display:flex;flex-direction:column}
.region-row{
  display:flex;
  align-items:center;
  gap:8px;
  height:34px;
  padding:0 6px;
  border-radius:var(--r-xs);
  font-size:12.5px;
  color:var(--text);
}
.region-row.is-current{background:var(--accent-07)}
.region-row.is-current .region-name{
  color:var(--accent-dark);
  font-weight:600;
}
.sig{
  width:14px;
  height:14px;
  flex:none;
  color:var(--text-soft);
}
.region-row.is-current .sig{color:var(--accent)}
.sig-dot{fill:currentColor}
.sig-arc{
  fill:none;
  stroke:currentColor;
  stroke-width:1.5;
  stroke-linecap:round;
}
.region-name{
  flex:1;
  min-width:0;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  letter-spacing:.01em;
}

.pane-status{
  background:var(--bg-panel2);
  padding:12px;
  box-shadow:var(--shadow-inset);
}
.conn-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
}
.conn-state{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:600;
  color:var(--success);
  letter-spacing:.01em;
}
.conn-dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--success);
  flex:none;
}
.toggle{
  position:relative;
  display:block;
  width:30px;
  height:17px;
  border-radius:var(--r-pill);
  background:var(--success);
  flex:none;
}
.toggle i{
  position:absolute;
  top:2px;
  right:2px;
  display:block;
  width:13px;
  height:13px;
  border-radius:50%;
  background:var(--bg-panel);
  box-shadow:0 1px 2px var(--ink-16);
}
.conn-route{
  margin-top:12px;
  display:flex;
  flex-direction:column;
  gap:3px;
  padding:9px 10px;
  border-radius:var(--r-sm);
  background:var(--bg-panel);
  border:1px solid var(--border);
}
.route-label{
  font-family:var(--font-mono);
  font-size:9px;
  color:var(--text-soft);
  letter-spacing:.06em;
}
.route-value{
  font-size:12px;
  font-weight:600;
  color:var(--text);
  letter-spacing:.01em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.fact-list{
  margin-top:12px;
  flex:1;
  display:flex;
  flex-direction:column;
  justify-content:space-evenly;
}
.fact{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:8px;
  padding:8px 2px;
  border-top:1px solid var(--border);
}
.fact:first-child{border-top:0}
.fact dt{
  flex:none;
  font-size:10.5px;
  color:var(--text-soft);
  letter-spacing:.02em;
}
.fact dd{
  font-size:11.5px;
  font-weight:600;
  color:var(--text);
  text-align:right;
  letter-spacing:.01em;
}
.pane-note{
  margin-top:auto;
  padding-top:10px;
  font-size:10px;
  line-height:1.5;
  color:var(--text-soft);
}

.pane-side{
  background:var(--bg-panel);
  border:1px solid var(--border);
  padding:10px;
}
.plat-list{
  flex:1;
  display:flex;
  flex-direction:column;
  justify-content:space-evenly;
  margin-top:2px;
}
.plat-list li{
  display:flex;
  align-items:center;
  gap:7px;
  font-size:11px;
  color:var(--text-muted);
  letter-spacing:.01em;
}
.plat-list svg{
  width:13px;
  height:13px;
  flex:none;
  color:var(--text-soft);
}
.mini-cta{
  margin-top:10px;
  display:flex;
  align-items:center;
  justify-content:center;
  height:30px;
  border-radius:var(--r-pill);
  background:linear-gradient(168deg,var(--accent-warm) 0%,var(--accent) 62%);
  color:var(--bg-panel);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.03em;
  white-space:nowrap;
  box-shadow:0 8px 16px -10px var(--accent-55),inset 0 1px 0 var(--white-40);
}

.float-tag{
  position:absolute;
  top:-14px;
  right:-8px;
  z-index:4;
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 12px;
  border-radius:var(--r-pill);
  border:1px solid var(--accent-32);
  background:var(--bg-panel);
  color:var(--accent-dark);
  font-size:11px;
  font-weight:600;
  letter-spacing:.04em;
  white-space:nowrap;
  box-shadow:var(--shadow-tag);
}
.float-tag i{
  display:block;
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--accent);
  flex:none;
}

.float-ticket{
  position:absolute;
  left:-30px;
  bottom:-20px;
  z-index:4;
  display:flex;
  flex-direction:column;
  gap:2px;
  padding:9px 14px;
  border-radius:var(--r-sm);
  background:var(--bg-panel);
  border:1px solid var(--border);
  box-shadow:var(--shadow-float);
}
.float-ticket::before{
  content:"";
  position:absolute;
  left:0;
  top:8px;
  bottom:8px;
  width:2px;
  border-radius:2px;
  background:var(--accent);
}
.ticket-k{
  font-family:var(--font-mono);
  font-size:9px;
  color:var(--text-soft);
  letter-spacing:.1em;
  line-height:1.2;
}
.ticket-v{
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:500;
  color:var(--text);
  letter-spacing:-.01em;
  line-height:1.3;
  white-space:nowrap;
}

/* ==========================================================================
   2. 分区家具:眉标 / 段头 / 事实带 / 页头
   ========================================================================== */

.kicker{
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:28px;
  padding:0 13px;
  border-radius:var(--r-pill);
  border:1px solid var(--accent-32);
  background:var(--bg-panel);
  color:var(--accent-dark);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.06em;
}
.kicker i{
  display:block;
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--accent);
  flex:none;
}

.sec-head{
  max-width:760px;
  margin:0 auto 42px;
  text-align:center;
}
.sec-head--left{
  margin-left:0;
  text-align:left;
}
.sec-head .sec-title{margin-top:16px}
.sec-head .sec-lede{
  margin-top:14px;
  font-size:15.5px;
  line-height:1.75;
  color:var(--text-muted);
}
.sec-head .hl{color:var(--accent);font-weight:600}

.fact-band{
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  background:var(--bg-panel);
}
.fact-band-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 28px;
  padding-top:15px;
  padding-bottom:15px;
}
.fact-band span{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--text-muted);
}
.fact-band b{color:var(--text);font-weight:600}

.page-head{
  position:relative;
  isolation:isolate;
  overflow-x:clip;
  padding-top:46px;
  padding-bottom:34px;
}
.page-head::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:calc(-1 * var(--nav-h));
  height:calc(100% + var(--nav-h));
  z-index:-1;
  pointer-events:none;
  background:radial-gradient(70% 90% at 22% 0%,var(--warm-06) 0%,var(--clear) 70%);
}
.page-head .page-title{max-width:22em}
.page-head .page-lede{
  margin-top:14px;
  max-width:760px;
  font-size:16px;
  line-height:1.75;
  color:var(--text-muted);
}
.page-head .page-meta{
  margin-top:16px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}

/* ==========================================================================
   3. 对照台账(左红叉 / 右绿勾)
   ========================================================================== */

.ledger{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
}
.ledger-pane{
  min-width:0;
  padding:28px;
  border-radius:var(--r-lg);
  border:1px solid var(--border);
}
.ledger-pane--bad{background:var(--bg-panel)}
.ledger-pane--good{background:var(--bg-panel2)}
.ledger-title{
  font-family:var(--font-display);
  font-size:clamp(19px,1.7vw,23px);
  font-weight:800;
  line-height:1.35;
  letter-spacing:-.02em;
  color:var(--text);
}
.ledger-list{
  margin-top:20px;
  display:flex;
  flex-direction:column;
  gap:13px;
}
.ledger-list li{
  display:flex;
  gap:10px;
  font-size:14px;
  line-height:1.65;
  color:var(--text-muted);
  min-width:0;
}
.ledger-list svg{
  width:18px;
  height:18px;
  flex:none;
  margin-top:2px;
}
.ledger-list .mark-x{color:var(--error)}
.ledger-list .mark-c{color:var(--success)}
.ledger .hl{color:var(--accent);font-weight:600}

/* ==========================================================================
   4. 不对称拼盘
   ========================================================================== */

.bento-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  grid-auto-rows:minmax(148px,auto);
  gap:16px;
  margin-top:18px;
}
.bento-card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:9px;
  min-width:0;
  padding:24px;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
}
.bento-card--lg{
  grid-column:span 2;
  grid-row:span 2;
  background:var(--bg-panel2);
  box-shadow:none;
}
.bento-card h3{letter-spacing:-.02em}
.bento-card p{
  font-size:13.5px;
  line-height:1.75;
  color:var(--text-muted);
}
.bento-k{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.1em;
  color:var(--text-soft);
}
.bento-tag{
  position:absolute;
  top:16px;
  right:16px;
  width:9px;
  height:9px;
  border-radius:3px;
}
.bento-tag--ipl{background:var(--accent)}
.bento-tag--relay{background:var(--violet)}
.bento-tag--direct{background:var(--amber)}

/* ==========================================================================
   5. 套餐卡与流量包
   ========================================================================== */

.plan-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
  align-items:stretch;
}
.plan-card{
  position:relative;
  display:flex;
  flex-direction:column;
  min-width:0;
  padding:26px 24px 24px;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
}
.plan-card.is-featured{
  border-color:var(--accent-32);
  box-shadow:0 30px 56px -38px var(--accent-24),0 2px 6px -3px var(--ink-06);
}
.plan-card.is-current{
  border-color:var(--accent);
  background:linear-gradient(180deg,var(--accent-04) 0%,var(--bg-panel) 42%);
}
.plan-badge{
  position:absolute;
  top:-11px;
  left:24px;
  display:inline-flex;
  align-items:center;
  height:22px;
  padding:0 10px;
  border-radius:var(--r-pill);
  background:var(--accent);
  color:var(--bg-panel);
  font-size:11px;
  font-weight:700;
  letter-spacing:.04em;
  white-space:nowrap;
}
.plan-name{
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--text-muted);
}
.plan-price{
  display:flex;
  align-items:baseline;
  gap:3px;
  margin-top:12px;
}
.plan-price .num{
  font-family:var(--font-display);
  font-size:38px;
  font-weight:800;
  line-height:1;
  letter-spacing:-.03em;
  color:var(--text);
}
.plan-price .cur{
  font-size:16px;
  font-weight:700;
  color:var(--text);
}
.plan-price .unit{
  margin-left:3px;
  font-size:12.5px;
  color:var(--text-soft);
}
.plan-quota{
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
  color:var(--text-muted);
}
.plan-list{
  margin-top:18px;
  display:flex;
  flex-direction:column;
  gap:9px;
  font-size:13px;
  line-height:1.6;
  color:var(--text-muted);
}
.plan-list li{display:flex;gap:8px;min-width:0}
.plan-list svg{
  width:14px;
  height:14px;
  flex:none;
  margin-top:3px;
  color:var(--success);
}
.plan-card .btn{
  margin-top:24px;
  width:100%;
  flex-shrink:0;
  white-space:nowrap;
}

.pack-strip{
  margin-top:18px;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
  padding:18px 20px;
  border:1px dashed var(--border-strong);
  border-radius:var(--r-lg);
  background:var(--bg-panel2);
}
.pack-item{min-width:0}
.pack-item .pk{
  font-size:11.5px;
  letter-spacing:.04em;
  color:var(--text-soft);
}
.pack-item .pv{
  margin-top:3px;
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:600;
  color:var(--text);
}

/* ==========================================================================
   6. 表格:线路表 / 数据表 / 横滑容器
   ========================================================================== */

.table-scroll{
  max-width:100%;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel);
}

.line-table,
.data-table{
  width:100%;
  border-collapse:collapse;
  font-size:13.5px;
}
.line-table{min-width:640px}
.data-table{min-width:560px}

.line-table th,
.data-table th{
  padding:12px 14px;
  text-align:left;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.05em;
  color:var(--text-muted);
  background:var(--bg-panel2);
  border-bottom:1px solid var(--border);
  white-space:nowrap;
}
.line-table td,
.data-table td{
  padding:12px 14px;
  border-bottom:1px solid var(--border);
  color:var(--text);
  vertical-align:middle;
  word-break:keep-all;
}
.line-table tbody tr:last-child td,
.data-table tbody tr:last-child td{border-bottom:0}
.line-table tbody tr:hover td{background:var(--accent-04)}

.line-table td:first-child,
.data-table td:first-child{
  color:var(--text);
  font-weight:600;
}
.line-table .cell-muted{color:var(--text-muted);font-weight:400}

.line-group-row td{
  background:var(--bg-panel3);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--text-muted);
  font-weight:600;
}

/* 文章正文里可能出现的裸表格:必须自带横滑,不许撑破整页 */
.prose > .data-table{
  display:block;
  max-width:100%;
  min-width:0;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}

/* ==========================================================================
   7. 平台卡与客户端下载
   ========================================================================== */

.platform-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(172px,1fr));
  gap:14px;
}
.platform-card{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:12px;
  min-width:0;
  padding:18px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.platform-card:hover{
  border-color:var(--accent-24);
  box-shadow:var(--shadow-card);
  transform:translateY(-2px);
}
.platform-card .pi{
  width:24px;
  height:24px;
  color:var(--text);
}
.platform-card .pname{
  font-size:14px;
  font-weight:600;
  letter-spacing:.01em;
}
.platform-card .btn{
  margin-top:auto;
  flex-shrink:0;
  white-space:nowrap;
}

/* ==========================================================================
   8. 文章卡
   ========================================================================== */

.post-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
}
.post-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  min-width:0;
  padding:22px;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  background:var(--bg-panel);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.post-card:hover{
  border-color:var(--accent-24);
  box-shadow:var(--shadow-card);
  transform:translateY(-2px);
}
.post-card--lead{
  grid-column:span 2;
  background:var(--bg-panel2);
}
.post-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:var(--text-soft);
}
.post-tag{
  display:inline-flex;
  align-items:center;
  max-width:100%;
  height:20px;
  padding:0 8px;
  border-radius:var(--r-xs);
  background:var(--accent-12);
  color:var(--accent-dark);
  font-family:var(--font-body);
  font-size:10.5px;
  font-weight:600;
  white-space:nowrap;
  overflow:hidden;
}
.post-title{
  font-family:var(--font-display);
  font-size:16.5px;
  font-weight:700;
  line-height:1.42;
  letter-spacing:-.015em;
  color:var(--text);
}
.post-card--lead .post-title{font-size:21px}
.post-summary{
  font-size:13.5px;
  line-height:1.72;
  color:var(--text-muted);
}
.post-more{
  margin-top:auto;
  padding-top:6px;
  display:inline-flex;
  align-items:center;
  gap:5px;
  min-height:26px;
  font-size:12.5px;
  font-weight:600;
  color:var(--accent-dark);
}
.post-more svg{width:11px;height:11px;flex:none}

.filter-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:26px;
}
.filter-row a,
.filter-row button{
  display:inline-flex;
  align-items:center;
  min-height:32px;
  padding:0 13px;
  border-radius:var(--r-pill);
  border:1px solid var(--border);
  background:var(--bg-panel);
  color:var(--text-muted);
  font-size:12.5px;
  cursor:pointer;
}
.filter-row .is-current{
  border-color:var(--accent-32);
  background:var(--accent-10);
  color:var(--accent-dark);
  font-weight:600;
}

/* ==========================================================================
   9. callout 与正文排版
   ========================================================================== */

.callout{
  position:relative;
  padding:16px 18px 16px 20px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel2);
  font-size:14px;
  line-height:1.78;
  color:var(--text-muted);
}
.callout::before{
  content:"";
  position:absolute;
  left:0;
  top:12px;
  bottom:12px;
  width:3px;
  border-radius:3px;
  background:var(--accent);
}
.callout strong{color:var(--text)}
.callout--warn::before{background:var(--warn)}
.callout--ok::before{background:var(--success)}
.callout + .callout{margin-top:12px}

.prose{
  font-size:15px;
  line-height:1.85;
  color:var(--text-muted);
}
.prose > * + *{margin-top:16px}
.prose h2{
  margin-top:38px;
  font-size:clamp(22px,2.2vw,30px);
  color:var(--text);
}
.prose h3{
  margin-top:28px;
  font-size:18px;
  color:var(--text);
}
.prose strong{color:var(--text);font-weight:600}
.prose a{color:var(--accent-dark);text-decoration:underline;text-underline-offset:2px}
.prose ul,
.prose ol{padding-left:22px;list-style:disc}
.prose ol{list-style:decimal}
.prose li + li{margin-top:8px}
.prose li::marker{color:var(--accent)}
.prose blockquote{
  padding:14px 18px;
  border-left:3px solid var(--accent-32);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:var(--bg-panel2);
  color:var(--text-muted);
}
.prose pre{
  max-width:100%;
  overflow-x:auto;
  padding:14px 16px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel3);
  font-size:12.5px;
  line-height:1.7;
}
.prose pre code{overflow-wrap:normal;word-break:normal}
.prose img{border-radius:var(--r-md)}
.prose hr{
  border:0;
  border-top:1px solid var(--border);
  margin:28px 0;
}

/* 步骤列表 */
.step-list{
  display:flex;
  flex-direction:column;
  gap:20px;
  counter-reset:step;
}
.step-list > li{
  position:relative;
  min-width:0;
  padding-left:46px;
  counter-increment:step;
}
.step-list > li::before{
  content:counter(step);
  position:absolute;
  left:0;
  top:1px;
  display:flex;
  align-items:center;
  justify-content:center;
  width:30px;
  height:30px;
  border-radius:50%;
  background:var(--accent-10);
  color:var(--accent-dark);
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:600;
}

/* ==========================================================================
   10. tab 切换
   ========================================================================== */

.tab-list{
  display:flex;
  flex-wrap:wrap;
  gap:5px;
  width:max-content;
  max-width:100%;
  padding:5px;
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  background:var(--bg-panel2);
}
.tab-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:36px;
  padding:0 16px;
  border:0;
  border-radius:var(--r-pill);
  background:transparent;
  color:var(--text-muted);
  font-family:var(--font-body);
  font-size:13px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
  cursor:pointer;
  transition:background-color .16s ease,color .16s ease,box-shadow .16s ease;
}
.tab-btn:hover{color:var(--text)}
.tab-btn[aria-selected="true"]{
  background:var(--bg-panel);
  color:var(--accent-dark);
  box-shadow:0 1px 2px var(--ink-06),0 8px 16px -12px var(--accent-24);
}
.tab-panel{padding-top:22px}
.tab-panel:focus-visible{outline-offset:4px}

/* ==========================================================================
   11. 长页目录条(toc)
   ========================================================================== */

.toc-tabs{
  position:sticky;
  top:0;
  z-index:30;
  display:flex;
  gap:6px;
  max-width:100%;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
  padding-top:10px;
  padding-bottom:10px;
  margin-bottom:30px;
  background:var(--bg);
  border-bottom:1px solid var(--border);
}
.toc-tabs a{
  flex:none;
  display:inline-flex;
  align-items:center;
  min-height:34px;
  padding:0 13px;
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  background:var(--bg-panel);
  color:var(--text-muted);
  font-size:12.5px;
  white-space:nowrap;
  transition:border-color .16s ease,color .16s ease,background-color .16s ease;
}
.toc-tabs a:hover{border-color:var(--accent-32);color:var(--text)}
.toc-tabs a.is-current{
  border-color:var(--accent-32);
  background:var(--accent-10);
  color:var(--accent-dark);
  font-weight:600;
}
.toc-tabs.is-static{position:static}

body:has(.toc-tabs) section[id]{scroll-margin-top:calc(var(--toc-h) + 20px)}

/* ==========================================================================
   12. FAQ 折叠
   ========================================================================== */

.faq-list{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.faq-item{
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  min-height:54px;
  padding:14px 16px;
  cursor:pointer;
  list-style:none;
  font-size:14.5px;
  font-weight:600;
  line-height:1.5;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";
  width:9px;
  height:9px;
  flex:none;
  border-right:1.6px solid var(--text-soft);
  border-bottom:1.6px solid var(--text-soft);
  transform:rotate(45deg);
  transition:transform .2s ease;
}
.faq-item[open] summary{color:var(--accent-dark)}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-body{
  padding:0 16px 16px;
  font-size:14px;
  line-height:1.78;
  color:var(--text-muted);
}
.faq-body p + p{margin-top:10px}
.faq-body strong{color:var(--text)}

/* ==========================================================================
   13. 文末推广块
   ========================================================================== */

.promo-block{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:18px;
  padding:24px;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  background:var(--bg-panel);
  box-shadow:var(--shadow-card);
}
.promo-block .promo-text{
  flex:1 1 260px;
  min-width:0;
}
.promo-block .promo-brand{
  font-family:var(--font-display);
  font-size:17px;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--text);
}
.promo-block .promo-line{
  margin-top:5px;
  font-size:13.5px;
  line-height:1.7;
  color:var(--text-muted);
}
.promo-block .btn{
  flex-shrink:0;
  white-space:nowrap;
}

/* ==========================================================================
   14. 右下角常驻悬浮 CTA
   ========================================================================== */

.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:60;
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:42px;
  padding:0 18px;
  border-radius:var(--r-pill);
  background:var(--bg-panel);
  border:1px solid var(--accent-32);
  color:var(--accent-dark);
  font-size:13px;
  font-weight:600;
  letter-spacing:.03em;
  white-space:nowrap;
  box-shadow:var(--shadow-float);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.float-cta i{
  display:block;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
  flex:none;
}
.float-cta:hover{
  border-color:var(--accent-55);
  box-shadow:0 18px 34px -18px var(--accent-24);
}

/* 页尾避让:滚到底时浮标不许压住正文段尾与页脚法律链 */
body:has(.float-cta)::after{
  content:"";
  display:block;
  height:calc(88px + env(safe-area-inset-bottom,0px));
}

/* ==========================================================================
   15. 设计预览页示例类(design-preview.html 专用)
   ========================================================================== */

.pv-section{
  padding-top:52px;
  padding-bottom:52px;
  border-bottom:1px solid var(--border);
}
.pv-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:10px 14px;
  margin-bottom:24px;
}
.pv-label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--accent-dark);
}
.pv-title{
  font-family:var(--font-display);
  font-size:18px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--text);
}

.swatch-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(148px,1fr));
  gap:12px;
}
.swatch{
  display:flex;
  flex-direction:column;
  gap:8px;
  min-width:0;
  padding:10px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel);
}
.swatch-chip{
  height:46px;
  border-radius:var(--r-sm);
  border:1px solid var(--ink-06);
}
.swatch-name{
  font-family:var(--font-mono);
  font-size:10.5px;
  line-height:1.5;
  color:var(--text-muted);
  overflow-wrap:anywhere;
}

.swatch-chip--bg{background:var(--bg)}
.swatch-chip--panel{background:var(--bg-panel)}
.swatch-chip--panel2{background:var(--bg-panel2)}
.swatch-chip--panel3{background:var(--bg-panel3)}
.swatch-chip--border{background:var(--border)}
.swatch-chip--border-strong{background:var(--border-strong)}
.swatch-chip--text{background:var(--text)}
.swatch-chip--muted{background:var(--text-muted)}
.swatch-chip--soft{background:var(--text-soft)}
.swatch-chip--accent{background:var(--accent)}
.swatch-chip--accent-dark{background:var(--accent-dark)}
.swatch-chip--warm{background:var(--accent-warm)}
.swatch-chip--violet{background:var(--violet)}
.swatch-chip--amber{background:var(--amber)}
.swatch-chip--success{background:var(--success)}
.swatch-chip--warn{background:var(--warn)}
.swatch-chip--error{background:var(--error)}
.swatch-chip--grad{background:linear-gradient(168deg,var(--accent-warm) 0%,var(--accent) 60%,var(--accent) 100%)}
.swatch-chip--spot{
  background:
    radial-gradient(80% 90% at 70% 0%,var(--warm-22) 0%,var(--warm-06) 45%,var(--clear) 75%),
    var(--bg);
}

.type-stack > * + *{margin-top:16px}
.type-meta{
  margin-top:6px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:var(--text-soft);
}

.demo-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
}
.demo-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:18px;
  align-items:start;
}
.demo-col{min-width:0}
.demo-note{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.03em;
  color:var(--text-soft);
}

/* ==========================================================================
   16. 响应式
   ========================================================================== */

@media (max-width:1240px){
  .hero-grid{grid-template-columns:minmax(0,1fr) 520px;gap:40px}
  .device-body{grid-template-columns:1.3fr 1fr .7fr;gap:8px;padding:12px}
  .float-ticket{left:-14px}
}

@media (max-width:1080px){
  .hero{min-height:0;padding-top:40px;padding-bottom:64px}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:52px}
  .hero-copy{max-width:640px}
  .hero-stage{max-width:600px;width:100%;margin:0 auto}

  .ledger{grid-template-columns:minmax(0,1fr)}
  .bento-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bento-card--lg{grid-column:span 2;grid-row:auto}
  .plan-grid{grid-template-columns:minmax(0,1fr)}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .post-card--lead{grid-column:span 2}
}

@media (max-width:760px){
  .hero-title{font-size:clamp(28px,7.4vw,38px);letter-spacing:-.025em}
  .hero-lede{font-size:14.5px}
  .hero-cta{gap:10px}
  .btn{height:46px;padding:0 22px;font-size:14px}
  .float-ticket{left:6px;bottom:-16px}
  .float-tag{right:2px;top:-12px}
  .device-body{grid-template-columns:1fr 1fr;gap:8px}
  .pane-side{grid-column:1 / -1;flex-direction:row;align-items:center;gap:12px}
  .pane-side .pane-head{margin-bottom:0}
  .plat-list{
    flex-direction:row;
    flex-wrap:wrap;
    gap:6px 12px;
    justify-content:flex-start;
    margin-top:0;
  }
  .mini-cta{margin-top:0;flex:none;padding:0 14px}

  .sec-head{margin-bottom:32px}
  .pack-strip{grid-template-columns:minmax(0,1fr);gap:10px}
  .post-grid{grid-template-columns:minmax(0,1fr)}
  .post-card--lead{grid-column:auto}
  .bento-grid{grid-template-columns:minmax(0,1fr);grid-auto-rows:auto}
  .bento-card--lg{grid-column:auto}
  .promo-block{padding:20px}
}

@media (max-width:640px){
  .hero-trust{font-size:12px}
  .hero-trust span + span::before{margin:0 8px}
  .plat-row{gap:8px 14px}
  .flag-row{gap:8px 13px}
  .device-body{grid-template-columns:1fr}
  .pane-side{grid-column:auto;flex-direction:column;align-items:stretch}
  .float-cta{right:14px;bottom:14px;height:38px;padding:0 14px;font-size:12px}
  .ledger-pane{padding:22px}
  .plan-card{padding:22px 20px}
  .toc-tabs{margin-bottom:22px}
}

@media (prefers-reduced-motion:reduce){
  .post-card:hover,
  .platform-card:hover{transform:none}
}