/* ============ 172号卡官网 · 公共样式 v3（清爽资讯站风） ============ */
:root{
  --ink:#07192f; --navy:#051427; --panel:#0b2139; --deep:#04101f;
  --cyan:#20baff; --blue:#1879e8; --lime:#b9ed48;
  --paper:#f3f8fc; --line:#d8e5ef; --line2:#e9f1f7;
  --muted:#5e7083; --soft:#33475b; --white:#fff;
  /* 深色区文字阶梯 */
  --t-on-dark-1:#f2f7fb;   /* 标题 */
  --t-on-dark-2:#c8dbeb;   /* 正文 */
  --t-on-dark-3:#9ab5cc;   /* 说明 */
  --t-on-dark-4:#7b96ad;   /* 次要/脚注 */
  /* 浅色区文字阶梯 */
  --t-1:#102338;           /* 标题 */
  --t-2:#3d5065;           /* 正文 */
  --t-3:#63768b;           /* 说明 */
  --t-4:#8a99ab;           /* 次要 */
  --shadow:0 16px 40px rgba(5,24,45,.10);
  --shadow-sm:0 2px 12px rgba(28,31,33,.06);
  --r:12px; --wrap:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:#fff; color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  line-height:1.7; -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.wrap{width:min(var(--wrap),calc(100% - 48px));margin:auto}

/* 宽屏自适应：避免两侧大片空白 */
@media(min-width:1360px){ .wrap{width:min(1400px,calc(100% - 72px))} }
@media(min-width:1760px){ .wrap{width:min(1560px,calc(100% - 120px))} }
@media(min-width:1100px) and (max-width:1359px){ .wrap{width:calc(100% - 64px)} }
em{font-style:normal}

/* ============ 顶部信号条 ============ */
.signal-bar{height:34px;color:var(--t-on-dark-3);background:var(--navy);font-size:12px}
.signal-bar-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
.signal-bar-inner span{display:inline-flex;align-items:center;gap:8px}
.signal-bar-inner i{width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 8px var(--lime)}
.signal-bar-inner a{color:#eaf7ff}
.signal-bar-inner a:hover{color:var(--lime)}

/* ============ 导航 ============ */
header.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);
  border-bottom:1px solid rgba(8,37,64,.08);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.nav{height:70px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:800;letter-spacing:-.2px}
.brand-mark{
  height:36px;width:36px;border-radius:9px;display:grid;place-items:center;
  color:#fff;font-weight:800;font-size:13px;letter-spacing:-.5px;
  background:linear-gradient(135deg,var(--blue),var(--cyan));
  box-shadow:0 6px 16px rgba(24,121,232,.28);
}
img.brand-logo{height:40px;max-height:40px;width:auto;object-fit:contain;flex:none;display:block}
.brand span{color:var(--ink)}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.5px;line-height:1}
.navlinks{display:flex;align-items:center;gap:30px;color:var(--t-2);font-size:14.5px;font-weight:600}
.navlinks a{transition:.25s;position:relative;padding:4px 0}
.navlinks a:hover{color:var(--blue)}
.nav-cta{
  border-radius:4px;padding:10px 18px;color:#fff!important;
  background:linear-gradient(135deg,var(--blue),#2f9bff);font-size:14px;
  box-shadow:0 8px 20px rgba(24,121,232,.24);transition:.25s;
}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 12px 26px rgba(24,121,232,.34)}
.menu{display:none;background:none;border:0;color:var(--ink);font-size:22px;cursor:pointer;padding:6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:5px;padding:12px 24px;font-weight:700;font-size:14.5px;
  transition:.25s;cursor:pointer;border:1px solid transparent;white-space:nowrap;
}
.btn-main{color:#fff;background:linear-gradient(135deg,var(--blue),#2f9bff);box-shadow:0 10px 26px rgba(24,121,232,.24)}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(24,121,232,.32)}
.btn-lime{color:#0a2037;background:var(--lime);box-shadow:0 10px 26px rgba(185,237,72,.22)}
.btn-lime:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(185,237,72,.3)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-2px)}
.btn-ghost-light{border-color:rgba(255,255,255,.4);color:#fff;background:rgba(255,255,255,.06)}
.btn-ghost-light:hover{background:rgba(255,255,255,.16);border-color:#fff}
.btn-sm{padding:8px 15px;font-size:13px;border-radius:4px}
.btn b{font-weight:400}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(ellipse 70% 80% at 88% 10%,rgba(32,186,255,.28),transparent 60%),
    radial-gradient(ellipse 60% 70% at 10% 90%,rgba(24,121,232,.26),transparent 62%),
    linear-gradient(120deg,#04101f,#07223c 55%,#0a2c4a);
}
.hero:after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,190,240,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,190,240,.07) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(to right,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(to right,rgba(0,0,0,.9),transparent 78%);
}
.hero-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:64px;min-height:600px;padding:72px 0 96px}
@media(min-width:1360px){ .hero-inner{gap:80px} }
.hero-copy{width:min(620px,56%)}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:9px;font:700 11.5px/1.4 Consolas,monospace;
  color:var(--lime);letter-spacing:2px;text-transform:uppercase;
  border:1px solid rgba(185,237,72,.35);background:rgba(185,237,72,.08);padding:6px 13px;border-radius:3px;
}
.hero h1{margin:24px 0 20px;font-size:54px;line-height:1.14;font-weight:800;letter-spacing:-1.4px}
.hero h1 em{color:var(--lime)}
.hero p.lead{margin:0;color:var(--t-on-dark-2);font-size:17px;line-height:1.9;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-points{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin:38px 0 0;padding:0;list-style:none;
  background:rgba(87,164,217,.28);border:1px solid rgba(87,164,217,.28);
}
.hero-points li{padding:14px 16px;background:rgba(3,20,38,.72)}
.hero-points strong,.hero-points span{display:block}
.hero-points strong{color:#fff;font-size:18px;line-height:1.4}
.hero-points span{color:var(--t-on-dark-4);font-size:12px}

/* Hero 右：信号面板卡 */
.hero-panel{width:min(390px,42%);position:relative}
.panel-logo{margin-bottom:16px;display:flex;justify-content:center;width:100%}
.panel-logo img{height:118px;width:auto;max-width:100%;object-fit:contain;filter:drop-shadow(0 14px 30px rgba(0,0,0,.45))}
.panel-card{
  border:1px solid rgba(120,190,240,.26);background:rgba(6,26,45,.78);
  border-radius:6px;box-shadow:0 30px 70px rgba(0,0,0,.45);overflow:hidden;
  backdrop-filter:blur(8px);
}
.panel-head{color:var(--t-on-dark-4);
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 18px;border-bottom:1px solid rgba(120,190,240,.18);
  font:700 12px/1 Consolas,monospace;letter-spacing:1.6px;color:#8db6d4;
}
.panel-head span{color:var(--lime)}
.panel-body{padding:20px 18px 22px}
.panel-row{display:flex;align-items:center;justify-content:space-between;padding:13px 0;border-bottom:1px dashed rgba(120,190,240,.16)}
.panel-row:last-child{border:0;padding-bottom:0}
.panel-row small{display:block;color:var(--t-3);font-size:11.5px;letter-spacing:.6px}
.panel-row b{font-size:16px;color:#fff;letter-spacing:.5px}
.panel-code{display:flex;align-items:baseline;gap:10px;margin:14px 0 18px}
.panel-code b{font:800 34px/1 Consolas,monospace;color:var(--lime);letter-spacing:3px}
.panel-code small{color:var(--t-3);font-size:11.5px;letter-spacing:.6px}
.bars{display:flex;align-items:flex-end;gap:4px;height:34px}
.bars i{display:block;width:7px;background:linear-gradient(to top,rgba(185,237,72,.35),var(--lime));border-radius:1px}

/* ============ 优势条：与 Hero 同一背景，无缝衔接 ============ */
.feature-band{
  position:relative;z-index:2;margin-top:-64px;padding:0;
  background:
    radial-gradient(ellipse 70% 80% at 88% 10%,rgba(32,186,255,.28),transparent 60%),
    radial-gradient(ellipse 60% 70% at 10% 90%,rgba(24,121,232,.26),transparent 62%),
    linear-gradient(120deg,#04101f,#07223c 55%,#0a2c4a);
}
.fb-inner{
  border-radius:0;overflow:hidden;
  background:transparent;
  border:0;border-top:1px solid rgba(120,190,240,.14);
  box-shadow:none;
  margin-bottom:-46px;
}
.fb-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.fb-grid article{
  display:flex;gap:14px;padding:30px 24px 28px;
  border-right:1px solid rgba(120,190,240,.14);
}
.fb-grid article:last-child{border-right:0}
.fb-grid article>span{
  color:var(--lime);font:700 12px/1.6 Consolas,monospace;
  opacity:.9;letter-spacing:.8px;
  min-width:20px;
}
.fb-grid b{display:block;color:var(--t-on-dark-1);font-size:15.5px;font-weight:700;margin-bottom:5px;letter-spacing:.2px}
.fb-grid p{color:var(--t-on-dark-4);font-size:12.5px;line-height:1.7}

.fb-trust{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding:14px 24px;
  border-top:1px solid rgba(120,190,240,.12);
  background:rgba(4,16,31,.18);
}
.fb-trust span{
  display:inline-flex;align-items:center;gap:7px;
  color:var(--t-on-dark-3);font-size:12.5px;letter-spacing:.2px;
}
.fb-trust i{
  width:15px;height:15px;border-radius:50%;display:grid;place-items:center;flex:none;
  background:rgba(185,237,72,.12);color:var(--lime);
  font-style:normal;font-size:9px;font-weight:900;
}

/* ============ 控制条（旧样式保留兼容） ============ */
.control-strip{background:var(--panel);border-top:1px solid rgba(120,190,240,.18)}
/* 从深色区到白底的过渡带 */
.hero-fade{height:120px;background:linear-gradient(to bottom,rgba(7,34,60,.92),rgba(7,34,60,.55) 42%,rgba(7,34,60,.2) 72%,rgba(247,250,252,0));margin-top:-120px;position:relative;z-index:0;pointer-events:none}
.control-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.control-grid article{display:flex;gap:14px;padding:26px 18px;border-right:1px solid rgba(120,190,240,.16);color:var(--t-on-dark-2);background:var(--panel)}
.control-grid article:first-child{border-left:1px solid rgba(120,190,240,.16)}
.control-grid article>span{color:var(--lime);font:700 14px/1.4 Consolas,monospace}
.control-grid b{display:block;color:var(--t-on-dark-1);font-size:15px;margin-bottom:3px}
.control-grid p{color:var(--t-on-dark-4);font-size:12.5px;line-height:1.7}

/* 信任条：同色系、无分界线、与上方直接相连 */
.trust-section{
  padding:0;border:0;background:var(--panel);
  border-top:1px solid rgba(120,190,240,.1);
}
.trust-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  max-width:none;
}
.trust-item{
  display:flex;align-items:center;justify-content:center;gap:7px;
  padding:12px 10px;color:var(--t-on-dark-4);font-size:12px;font-weight:400;
  border-right:1px solid rgba(120,190,240,.08);
}
.trust-item:last-child{border-right:0}
.trust-item i{
  width:14px;height:14px;border-radius:50%;display:grid;place-items:center;flex:none;
  background:rgba(120,190,240,.1);color:#7fb4d8;font-style:normal;font-size:8px;font-weight:900;
}

/* ============ 区块通用 ============ */
.section{padding:88px 0}
/* 独立板块页头 */
.page-head{padding:58px 0 34px;background:linear-gradient(115deg,#04101f,#0b2139);color:#fff}
.page-head .section-kicker{color:var(--lime)}
.page-head h1{font-size:clamp(26px,3.6vw,40px);line-height:1.25;letter-spacing:-1px;margin:8px 0 12px}
.page-head h1 em{color:var(--lime);font-style:normal}
.page-head p{color:var(--t-on-dark-3);font-size:14.5px;line-height:1.9;max-width:760px}
.page-head+.section{padding-top:44px}
/* 独立板块页头 */
.page-head{padding:58px 0 34px;background:linear-gradient(115deg,#04101f,#0b2139);color:#fff}
.page-head .section-kicker{color:var(--lime)}
.page-head h1{font-size:clamp(26px,3.6vw,40px);line-height:1.25;letter-spacing:-1px;margin:8px 0 12px}
.page-head h1 em{color:var(--lime);font-style:normal}
.page-head p{color:var(--t-on-dark-3);font-size:14.5px;line-height:1.9;max-width:760px}
.page-head+.section{padding-top:44px}
.section.bg-paper{background:var(--paper)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:36px;flex-wrap:wrap}
.section-kicker{display:block;margin-bottom:10px;color:var(--blue);font:700 12px/1.2 Consolas,monospace;letter-spacing:1.6px}
.section h2{font-size:34px;line-height:1.3;letter-spacing:-.6px;margin:0 0 9px}
.section h2 em{color:var(--blue)}
.section-head p,.section-note{margin:0;color:var(--muted);font-size:14.5px;max-width:520px;line-height:1.8}
.section-link{color:var(--blue);font-weight:700;font-size:14px;white-space:nowrap}
.section-link:hover{text-decoration:underline}

/* ============ 套餐矩阵 ============ */
.filter-tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:18px}
.filter-tabs button{
  padding:9px 18px;border:1px solid var(--line);border-radius:4px;background:#fff;
  color:var(--t-3);cursor:pointer;font:inherit;font-size:13.5px;transition:.22s;
}
.filter-tabs button:hover{border-color:var(--blue);color:var(--blue)}
.filter-tabs button.active{border-color:var(--blue);color:#fff;background:var(--blue);box-shadow:0 6px 16px rgba(24,121,232,.22)}
.plan-matrix{border-top:2px solid var(--ink);background:#fff;box-shadow:var(--shadow)}
.plan-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.plan{
  padding:24px 20px 20px;border-right:1px solid var(--line2);border-bottom:1px solid var(--line2);
  background:#fff;transition:.25s;position:relative;
}
.plan:nth-child(4n){border-right:0}
.plan:hover{background:#f9fcff;box-shadow:inset 0 0 0 1px rgba(24,121,232,.35);z-index:1}
.plan-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:8px}
.op{
  font-size:11.5px;padding:3px 9px;border-radius:3px;color:var(--blue);
  border:1px solid rgba(24,121,232,.28);background:rgba(24,121,232,.07);letter-spacing:.4px;
}
.plan .hot{font-size:11px;color:#fff;background:linear-gradient(135deg,#ff7a18,#ff3d00);padding:3px 8px;border-radius:3px;font-weight:700}
.plan h3{font-size:17px;font-weight:750;margin-bottom:4px;color:var(--ink)}
.plan-name{font-size:17px;font-weight:750;margin-bottom:4px;color:var(--ink);letter-spacing:-.2px}
.plan .flow{font-size:26px;font-weight:800;letter-spacing:-.8px;color:var(--ink);line-height:1.3}
.plan .flow small{font-size:12px;color:var(--muted);font-weight:500;letter-spacing:0}
.plan .price{color:var(--blue);font-size:14px;font-weight:700;margin:8px 0 2px}
.plan .price i{font-style:normal;font-size:26px;letter-spacing:-1px;margin-right:2px}
.plan .price small{color:var(--muted);font-weight:400;font-size:11.5px}
.plan .call{font-size:12.5px;color:var(--muted);margin-bottom:10px}
.plan p{font-size:12.5px;color:var(--soft);line-height:1.75;min-height:44px;margin-bottom:14px}
.plan a{
  display:block;text-align:center;font-size:13px;font-weight:700;color:var(--blue);
  border:1px solid rgba(24,121,232,.3);border-radius:4px;padding:8px;transition:.22s;
}
.plan a:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
.plan-note{margin-top:14px;font-size:12.5px;color:var(--t-4);line-height:1.85}
.empty{padding:50px;text-align:center;color:var(--muted)}
.plan-foot{margin-top:auto;padding-top:10px;border-top:1px dashed var(--line2);text-align:center;font-size:11.5px;color:var(--t-4)}

/* ============ 流程 ============ */
.workflow-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:52px;align-items:start}
.workflow-copy h2{font-size:34px;line-height:1.3;letter-spacing:-.6px;margin:0 0 14px}
.workflow-copy p{color:var(--muted);font-size:15px;line-height:1.9;margin-bottom:22px}
.steps{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.step{
  padding:24px 22px;border:1px solid var(--line);border-radius:6px;background:#fff;
  box-shadow:var(--shadow-sm);transition:.25s;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c9dcf0}
.step b{display:inline-block;font:800 12px/1 Consolas,monospace;color:var(--blue);background:rgba(24,121,232,.08);border-radius:3px;padding:5px 8px;margin-bottom:12px;letter-spacing:1px}
.step h3{font-size:16.5px;margin-bottom:7px}
.step p{font-size:13px;color:var(--muted);line-height:1.85}

/* ============ 双品牌 / 招募卡 ============ */
.recruit-wrap{border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:var(--shadow);overflow:hidden}
.recruit-head{padding:26px 30px 0}
.recruit-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line2)}
.recruit-card{background:#fff;padding:26px 30px 30px;position:relative}
.recruit-card.agent{background:linear-gradient(160deg,#fff,#f6faff)}
.recruit-card.fly{background:linear-gradient(160deg,#fff,#f4fdf8)}
.recruit-tag{
  display:inline-block;font:700 11px/1.2 Consolas,monospace;letter-spacing:1.2px;
  color:var(--blue);background:rgba(24,121,232,.08);border:1px solid rgba(24,121,232,.2);
  padding:5px 9px;border-radius:3px;margin-bottom:14px;
}
.recruit-card.fly .recruit-tag{color:#0fa47f;background:rgba(15,164,127,.08);border-color:rgba(15,164,127,.22)}
.recruit-title{font-size:19px;font-weight:750;color:var(--ink);margin-bottom:8px}
.recruit-card small{display:block;color:var(--muted);font-size:12.5px;margin-bottom:12px}
.recruit-desc{font-size:13.5px;color:var(--soft);line-height:1.9;margin-bottom:18px}
.recruit-btns{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:9px}
.recruit-btns a{
  font-size:13px;font-weight:700;padding:9px 15px;border-radius:4px;
  border:1px solid var(--line);color:var(--ink);transition:.22s;background:#fff;
}
.recruit-btns a:hover{border-color:var(--blue);color:var(--blue)}
.recruit-btns a.solid{background:var(--blue);border-color:var(--blue);color:#fff}
.recruit-btns a.solid:hover{background:#0f6ad4;color:#fff}
.recruit-card.fly .recruit-btns a.solid{background:#0fa47f;border-color:#0fa47f}
.recruit-card.fly .recruit-btns a.solid:hover{background:#0b8d6c}

/* ============ 信任条（样式见控制条区域） ============ */

/* ============ 代理（邀请码） ============ */
.agency{
  padding:44px 40px;border-radius:8px;border:1px solid rgba(24,121,232,.18);
  background:linear-gradient(115deg,#f4f9ff,#fff 54%,#eefaf5);box-shadow:var(--shadow);
}
.agency-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.agency h2{font-size:32px;letter-spacing:-.6px;line-height:1.32;margin-bottom:14px}
.agency h2 em{color:var(--blue)}
.agency p{color:var(--muted);font-size:14.5px;line-height:1.95}
.invite{
  display:inline-flex;align-items:baseline;gap:12px;margin-top:20px;
  padding:12px 20px;border-radius:6px;border:1px dashed rgba(24,121,232,.45);
  background:#fff;cursor:pointer;transition:.22s;box-shadow:var(--shadow-sm);
}
.invite:hover{border-color:var(--blue);box-shadow:0 10px 24px rgba(24,121,232,.16)}
.invite small{font-size:11.5px;color:var(--muted);letter-spacing:1px}
.invite b{font:800 26px/1 Consolas,monospace;color:var(--blue);letter-spacing:3px}
.invite u{font-size:11.5px;color:var(--blue);text-decoration:none;font-weight:700}
.perks{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.perk{padding:20px;border-radius:6px;border:1px solid var(--line);background:#fff;transition:.22s}
.perk:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#c9dcf0}
.perk b{display:block;color:var(--ink);font-size:15.5px;margin-bottom:5px}
.perk b:before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--lime);border:2px solid rgba(185,237,72,.4);margin-right:8px;vertical-align:1px}
.perk span{font-size:12.5px;color:var(--muted);line-height:1.8}

/* ============ 知识预览 ============ */
.knowledge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.know-card{
  display:block;padding:26px;border:1px solid var(--line);border-radius:6px;background:#fff;
  box-shadow:var(--shadow-sm);transition:.25s;
}
.know-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c9dcf0}
.know-card span{font:700 11.5px/1.2 Consolas,monospace;color:var(--blue);letter-spacing:1.2px}
.know-card h3{font-size:17px;line-height:1.5;margin:12px 0 9px;color:var(--ink)}
.know-card p{font-size:13px;color:var(--muted);line-height:1.85;margin-bottom:14px}
.know-card u{text-decoration:none;color:var(--blue);font-size:13px;font-weight:700}

/* ============ FAQ ============ */
.faq{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.faq details{
  border:1px solid var(--line);border-radius:6px;background:#fff;overflow:hidden;transition:.22s;
  box-shadow:var(--shadow-sm);align-self:start;
}
.faq details[open]{border-color:rgba(24,121,232,.4);box-shadow:0 10px 26px rgba(24,121,232,.1)}
.faq summary{
  padding:17px 20px;cursor:pointer;font-size:14.5px;font-weight:650;list-style:none;color:var(--ink);
  display:flex;justify-content:space-between;align-items:center;gap:14px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--blue);font-size:19px;font-weight:400;transition:.22s;flex:none}
.faq details[open] summary:after{transform:rotate(45deg)}
.faq .ans{padding:0 20px 18px;color:var(--muted);font-size:13px;line-height:1.95}

/* ============ 联系 ============ */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.contact-card{
  padding:24px;border:1px solid var(--line);border-radius:6px;background:#fff;
  box-shadow:var(--shadow-sm);transition:.22s;
}
.contact-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.contact-card small{display:block;font:700 11px/1.2 Consolas,monospace;color:var(--blue);letter-spacing:1.6px;margin-bottom:10px}
.contact-card b{display:block;font-size:17px;color:var(--ink);letter-spacing:.4px;word-break:break-all}
.contact-card span{display:block;color:var(--muted);font-size:12.5px;margin-top:5px}

/* ============ CTA 带 ============ */
.cta-band{padding:52px 0;color:#fff;background:linear-gradient(115deg,#0b2139,#2a2110 55%,#2b2a22);border-top:1px solid rgba(120,190,240,.12)}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}
.cta-inner .section-kicker{color:var(--lime)}
.cta-inner h2{font-size:30px;letter-spacing:-.5px;margin-bottom:8px}
.cta-inner p{color:var(--t-on-dark-3);font-size:14.5px}

/* ============ 页脚 ============ */
footer.site-footer{padding:54px 0 26px;color:var(--t-4);background:var(--deep)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{max-width:340px;font-size:13px;line-height:1.9;margin-top:14px;color:var(--t-4)}
footer.site-footer h2{font-size:15px;color:#fff;margin-bottom:12px;font-weight:700}
footer.site-footer a{display:block;margin:8px 0;font-size:13px;color:var(--t-4);transition:.2s}
footer.site-footer a:hover{color:var(--lime)}
.footer-contact b{display:block;color:#fff;font-size:14px;margin-bottom:2px}
.footer-contact span{display:block;font-size:12.5px;margin-bottom:12px}
.footer-bottom{
  border-top:1px solid rgba(120,190,240,.14);margin-top:36px;padding-top:18px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12px;color:var(--t-3);
}
.brand.footer-logo span{color:#fff}
.brand.footer-logo small{color:var(--t-4)}

/* 回到顶部 / 复制提示 */
.top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:6px;
  border:1px solid rgba(24,121,232,.35);background:#fff;color:var(--blue);
  opacity:0;visibility:hidden;cursor:pointer;transition:.3s;font-size:17px;z-index:90;
  box-shadow:var(--shadow);
}
.top.show{opacity:1;visibility:visible}
.top:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
.toast{
  position:fixed;left:50%;bottom:40px;transform:translate(-50%,18px);
  padding:11px 22px;border-radius:5px;font-size:13px;z-index:200;
  background:var(--navy);color:#eaf7ff;border:1px solid rgba(24,121,232,.5);
  box-shadow:0 14px 34px rgba(5,20,39,.35);opacity:0;transition:.3s;pointer-events:none;
}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ============ 两栏布局（内容 + 侧边栏） ============ */
.two-col{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;align-items:start}
.main-col{min-width:0}
.main-col .section-head{margin-bottom:22px}
.side-col{display:grid;gap:16px;position:sticky;top:92px}

/* 侧边栏：联系我们 */
.side-contact{border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:var(--shadow);overflow:hidden}
.sc-head{padding:22px 22px 18px;background:linear-gradient(135deg,#0c2a45,#123a5e);color:#fff;position:relative}
.sc-head:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(120,190,240,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,240,.08) 1px,transparent 1px);background-size:32px 32px;pointer-events:none}
.sc-head span{position:relative;font:700 11px/1.2 Consolas,monospace;letter-spacing:1.8px;color:var(--lime)}
.sc-head h3{position:relative;font-size:21px;margin:9px 0 7px;letter-spacing:-.2px}
.sc-head p{position:relative;color:#a9c4d8;font-size:12.5px;line-height:1.75}
.sc-item{display:flex;align-items:center;gap:10px;padding:14px 22px;border-bottom:1px solid var(--line2)}
.sc-item small{display:block;font-size:12px;color:var(--muted);min-width:62px}
.sc-item b{flex:1;font-size:15px;color:var(--ink);letter-spacing:.3px;word-break:break-all;font-weight:700}
.sc-item b a{color:var(--ink)}
.sc-item b a:hover{color:var(--blue)}
.sc-copy{border:1px solid rgba(24,121,232,.32);background:#fff;color:var(--blue);font-size:12px;font-weight:700;padding:5px 11px;border-radius:4px;cursor:pointer;transition:.2s;flex:none}
.sc-copy:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
.sc-actions{padding:18px 22px;display:grid;gap:9px}
.sc-actions .btn{width:100%;font-size:13.5px;padding:11px}
.sc-hours{padding:0 22px 18px;font-size:11.5px;color:var(--t-4);letter-spacing:.3px}

/* 侧边栏：其它块 */
.side-box{border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:var(--shadow-sm);overflow:hidden}
.side-box h4{padding:14px 20px;font:700 12px/1 Consolas,monospace;letter-spacing:1.6px;color:var(--blue);border-bottom:1px solid var(--line2);background:#f8fbfe}
.side-box a{display:block;padding:12px 20px;font-size:13.5px;color:var(--t-2);border-bottom:1px solid var(--line2);transition:.2s}
.side-box a:last-child{border:0}
.side-box a:hover{color:var(--blue);background:#f4f9ff;padding-left:24px}
.side-invite{background:linear-gradient(160deg,#f4f9ff,#eefaf5);text-align:center;padding-bottom:18px}
.side-invite h4{background:transparent;border-bottom:1px solid var(--line2)}
.si-code{
  margin:16px 20px 10px;padding:14px 0;border:1px dashed rgba(24,121,232,.45);border-radius:6px;
  background:#fff;font:800 27px/1 Consolas,monospace;color:var(--blue);letter-spacing:5px;cursor:pointer;transition:.2s;
}
.si-code:hover{border-color:var(--blue);box-shadow:0 10px 22px rgba(24,121,232,.16)}
.side-invite p{padding:0 22px;font-size:12px;color:var(--muted);line-height:1.8}

/* ============ 响应式 ============ */
@media(max-width:1000px){
  .two-col{grid-template-columns:1fr}
  .side-col{position:static}
}
@media(max-width:1080px){
  .plan-grid{grid-template-columns:repeat(3,1fr)}
  .plan:nth-child(4n){border-right:1px solid var(--line2)}
  .plan:nth-child(3n){border-right:0}
  .knowledge-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .hero-inner{flex-direction:column;align-items:flex-start;min-height:0;padding:48px 0 54px}
  .hero-copy,.hero-panel{width:100%}
  .hero h1{font-size:40px}
  .hero-panel{max-width:460px}
  .panel-logo img{height:110px}
  .control-grid{grid-template-columns:1fr 1fr}
  .control-grid article:nth-child(2){border-right:0}
  .workflow-layout{grid-template-columns:1fr;gap:32px}
  .recruit-grid{grid-template-columns:1fr}
  .agency-grid{grid-template-columns:1fr;gap:28px}
  .faq{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .hero-inner{min-height:auto;padding:48px 0 84px}
  .section h2,.workflow-copy h2{font-size:28px}
}
@media(max-width:800px){
  .wrap{width:min(100% - 32px,620px)}
  .nav{height:62px}
  .signal-bar-inner .hide-m{display:none}
  .navlinks{
    position:absolute;top:62px;left:0;right:0;display:block;max-height:0;overflow:hidden;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:0 12px 24px rgba(8,37,64,.08);
    transition:.3s;gap:0;
  }
  .navlinks.open{max-height:400px;padding:8px 16px}
  .navlinks a{display:block;padding:13px 8px;border-bottom:1px solid var(--line2);font-size:15px}
  .nav-cta{margin:10px 0;text-align:center;border-radius:4px}
  .menu{display:block}
  img.brand-logo{height:36px}
  .hero h1{font-size:33px;letter-spacing:-.8px;margin:18px 0 16px}
  .hero p.lead{font-size:15px}
  .hero-actions{display:grid;grid-template-columns:1fr;width:100%}
  .hero-actions .btn{width:100%}
  .hero-points{grid-template-columns:repeat(3,1fr)}
  .hero-points li{padding:11px 10px}
  .hero-points strong{font-size:15px}
  .hero-points span{font-size:11px}
  .control-grid article{padding:18px 14px}
  .plan-grid{grid-template-columns:1fr 1fr}
  .plan{padding:18px 14px 16px}
  .plan:nth-child(3n){border-right:1px solid var(--line2)}
  .plan:nth-child(2n){border-right:0}
  .plan .flow{font-size:22px}
  .knowledge-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .agency{padding:32px 20px}
  .perks{grid-template-columns:1fr}
  .recruit-head{padding:22px 20px 0}
  .recruit-card{padding:22px 20px 24px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .cta-inner h2{font-size:23px}
  .top{right:14px;bottom:14px}
}
@media(max-width:420px){
  .plan-grid{grid-template-columns:1fr}
  .plan{border-right:0!important}
  .hero-points{grid-template-columns:1fr}
  .hero-points li{padding:10px 12px}
}

/* ============ 文章系统 ============ */
.k-main{min-width:0}
.k-cats{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.k-cats button{
  padding:7px 15px;border:1px solid var(--line);background:#fff;color:var(--soft);
  border-radius:99px;font:inherit;font-size:13px;cursor:pointer;transition:.2s;
}
.k-cats button:hover{border-color:var(--blue);color:var(--blue)}
.k-cats button.active{background:var(--blue);border-color:var(--blue);color:#fff}
.article-list{display:grid;gap:12px}
.article-item{
  display:block;padding:24px 26px;border:1px solid var(--line);border-radius:10px;background:#fff;
  box-shadow:var(--shadow-sm);transition:.25s;
}
.article-item:hover{transform:translateY(-3px);box-shadow:0 18px 38px rgba(10,26,29,.09);border-color:rgba(31,111,99,0)}
.ai-cat{
  display:inline-block;font:700 11px/1.2 Consolas,monospace;letter-spacing:1px;color:var(--blue);
  background:rgba(24,121,232,.08);border:1px solid rgba(24,121,232,.2);padding:4px 9px;border-radius:3px;
}
.article-item h3{font-size:18px;line-height:1.5;color:var(--ink);margin:11px 0 8px;letter-spacing:-.2px}
.article-item p{color:var(--muted);font-size:13.5px;line-height:1.85}
.ai-meta{display:flex;align-items:center;justify-content:space-between;margin-top:13px;font-size:12.5px;color:var(--t-4)}
.ai-meta u{text-decoration:none;color:var(--blue);font-weight:700}

/* 文章详情 */
.article-hero{
  color:#fff;padding:46px 0 42px;
  background:radial-gradient(ellipse 70% 90% at 86% 0,rgba(32,186,255,.24),transparent 62%),linear-gradient(120deg,#04101f,#0b2139 60%,#0a2c4a);
}
.crumb{font-size:12.5px;color:var(--t-on-dark-4);display:flex;gap:9px;align-items:center;flex-wrap:wrap}
.crumb a:hover{color:var(--lime)}
.crumb b{color:#cfe3f3;font-weight:500}
.article-hero h1{font-size:clamp(24px,3.4vw,36px);line-height:1.36;letter-spacing:-.6px;margin:16px 0 14px;max-width:860px}
.art-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:#9db9d1}
.art-meta i{width:4px;height:4px;border-radius:50%;background:#5f7d97}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:34px;align-items:start}
.article-body{padding:34px 38px;border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:var(--shadow-sm)}
.article-body p{color:var(--soft);font-size:15px;line-height:2.05;margin-bottom:14px}
.article-body h4{font-size:16.5px;color:var(--ink);margin:24px 0 10px;padding-left:11px;border-left:3px solid var(--blue)}
.article-body ol,.article-body ul{padding-left:24px;color:var(--soft);font-size:15px;line-height:2;margin-bottom:14px}
.article-body li{margin-bottom:7px}
.article-body b{color:var(--ink)}
.article-body a{color:var(--blue);text-decoration:underline}
.art-toc{display:grid;padding-bottom:8px}
.art-toc a{display:block;padding:10px 20px;font-size:13px;color:var(--t-2);border-bottom:1px solid var(--line2);transition:.2s}
.art-toc a:hover{color:var(--blue);background:#f4f9ff}
.art-more{display:grid}
.side-box a{border-bottom:1px solid var(--line2)}
.art-nav{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}
.art-nav a{
  display:block;padding:16px 20px;border:1px solid var(--line);border-radius:8px;background:#fff;
  box-shadow:var(--shadow-sm);transition:.22s;
}
.art-nav a:hover{border-color:#c9dcf0;box-shadow:var(--shadow)}
.art-nav small{display:block;font-size:11.5px;color:var(--t-4);letter-spacing:1px;margin-bottom:6px}
.art-nav b{font-size:14px;color:var(--ink);line-height:1.6;font-weight:650}
.art-nav .an-next{text-align:right}

@media(max-width:1000px){
  .article-layout{grid-template-columns:1fr}
  .article-layout .side-col{position:static}
  .article-body{padding:26px 22px}
}
@media(max-width:800px){
  .art-nav{grid-template-columns:1fr}
  .art-nav .an-next{text-align:left}
  .page-head{padding:40px 0 26px}
}