/* ==========================================================================
   400电话通 400telfn.cn — 全站共享样式表
   ========================================================================== */
:root{
  --navy-950:#0A1B30;
  --navy-900:#0F2745;
  --navy-800:#173A5E;
  --navy-700:#20486F;
  --blue-600:#2E6FE0;
  --blue-500:#5089F2;
  --amber-500:#E3A33D;
  --amber-400:#F0C374;
  --paper:#F6F3EC;
  --paper-dim:#EFEAE0;
  --white:#FFFFFF;
  --ink:#132132;
  --ink-soft:#51606F;
  --ink-faint:#8B98A5;
  --line:rgba(19,33,50,.12);
  --line-dark:rgba(255,255,255,.14);
  --mono:"SFMono-Regular",ui-monospace,Consolas,"JetBrains Mono",Menlo,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --shadow-soft:0 20px 50px -20px rgba(10,27,48,.25);
  --shadow-card:0 10px 30px -12px rgba(10,27,48,.18);
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
table{border-collapse:collapse;width:100%;}
.container{max-width:1180px;margin:0 auto;padding:0 28px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--blue-600);font-weight:600;margin-bottom:14px;}
.eyebrow::before{content:"";width:16px;height:1px;background:var(--blue-600);}
.eyebrow.on-dark{color:var(--amber-400);}
.eyebrow.on-dark::before{background:var(--amber-400);}
.section-title{font-size:clamp(26px,3.4vw,38px);font-weight:800;letter-spacing:-.01em;color:var(--navy-950);margin-bottom:14px;}
.section-sub{color:var(--ink-soft);font-size:15.5px;max-width:640px;}
.section-head{margin-bottom:44px;}
.section-head.center{text-align:center;margin-left:auto;margin-right:auto;}
.section-head.center .section-sub{margin-left:auto;margin-right:auto;}
section{padding:88px 0;}
main{display:block;}
h1,h2,h3,h4{color:var(--navy-950);}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ---------- Skip link (a11y) ---------- */
.skip-link{position:absolute;left:-999px;top:0;background:var(--navy-950);color:#fff;padding:10px 18px;z-index:1000;border-radius:0 0 8px 0;}
.skip-link:focus{left:0;}

/* ---------- Header ---------- */
header{position:sticky;top:0;z-index:100;background:rgba(246,243,236,.86);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .25s ease, box-shadow .25s ease;}
header.scrolled{border-bottom-color:var(--line);box-shadow:0 8px 24px -18px rgba(10,27,48,.35);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:76px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--navy-950);}
.brand img{width:34px;height:34px;border-radius:8px;object-fit:cover;}
.brand small{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:var(--ink-faint);font-weight:500;}
nav.main-links{display:flex;gap:15px;flex-shrink:0;}
nav.main-links a{font-size:13px;font-weight:600;color:var(--ink-soft);position:relative;padding:6px 0;white-space:nowrap;transition:color .2s ease;}
nav.main-links a:hover,nav.main-links a[aria-current="page"]{color:var(--navy-950);}
nav.main-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--blue-600);transition:width .25s ease;}
nav.main-links a:hover::after,nav.main-links a[aria-current="page"]::after{width:100%;}
.header-actions{display:flex;align-items:center;gap:14px;}
.hotline-mini{display:flex;flex-direction:column;align-items:flex-end;font-family:var(--mono);line-height:1.2;}
.hotline-mini span{font-size:10.5px;color:var(--ink-faint);letter-spacing:.06em;}
.hotline-mini b{font-size:15px;color:var(--navy-950);letter-spacing:.02em;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:8px;font-weight:700;font-size:14.5px;transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease, border-color .18s ease;white-space:nowrap;}
.btn-primary{background:var(--blue-600);color:#fff;box-shadow:0 10px 24px -10px rgba(46,111,224,.55);}
.btn-primary:hover{background:#2560c9;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--navy-950);border:1.5px solid var(--line);}
.btn-ghost:hover{border-color:var(--navy-950);}
.btn-amber{background:var(--amber-500);color:var(--navy-950);box-shadow:0 10px 24px -10px rgba(227,163,61,.55);}
.btn-amber:hover{background:var(--amber-400);transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.35);}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.08);}
.btn-sm{padding:9px 16px;font-size:13px;}
.menu-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;}
.menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{content:"";display:block;width:20px;height:2px;background:var(--navy-950);position:relative;transition:.2s ease;}
.menu-toggle span::before{position:absolute;top:-6px;width:20px;}
.menu-toggle span::after{position:absolute;top:6px;width:20px;}

/* ---------- Breadcrumb ---------- */
.breadcrumb-bar{background:var(--navy-950);padding:16px 0;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:rgba(255,255,255,.45);font-family:var(--mono);flex-wrap:wrap;}
.breadcrumb a{color:rgba(255,255,255,.65);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(255,255,255,.25);}
.breadcrumb .current{color:var(--amber-400);}

/* ---------- Inner page hero ---------- */
.page-hero{background:radial-gradient(1100px 520px at 12% -20%, #16345A 0%, var(--navy-950) 55%, var(--navy-950) 100%);color:#fff;padding:56px 0 64px;position:relative;overflow:hidden;}
.page-hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);background-size:64px 64px;mask-image:radial-gradient(700px 420px at 82% 10%, #000 0%, transparent 70%);pointer-events:none;}
.page-hero .container{position:relative;z-index:2;}
.page-hero h1{font-size:clamp(30px,4vw,44px);font-weight:800;letter-spacing:-.02em;line-height:1.2;margin-bottom:16px;max-width:760px;color:#fff;}
.page-hero p{font-size:16px;color:rgba(255,255,255,.65);max-width:600px;}
.page-hero .hero-meta{display:flex;gap:22px;flex-wrap:wrap;margin-top:26px;}
.page-hero .hero-meta div{font-family:var(--mono);font-size:12.5px;color:rgba(255,255,255,.5);}
.page-hero .hero-meta b{display:block;color:var(--amber-400);font-size:18px;}

/* ---------- Hero (home) ---------- */
.hero{background:radial-gradient(1200px 600px at 15% -10%, #16345A 0%, var(--navy-950) 55%, var(--navy-950) 100%);color:#fff;padding:96px 0 0;position:relative;overflow:hidden;}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);background-size:64px 64px;mask-image:radial-gradient(700px 420px at 78% 20%, #000 0%, transparent 70%);pointer-events:none;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:2;}
.hero-tag{display:inline-flex;align-items:center;gap:10px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);padding:7px 14px;border-radius:100px;font-size:12.5px;color:var(--amber-400);font-weight:700;letter-spacing:.02em;margin-bottom:26px;}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--amber-500);box-shadow:0 0 0 4px rgba(227,163,61,.2);}
.hero h1{font-size:clamp(34px,4.6vw,54px);font-weight:800;letter-spacing:-.02em;line-height:1.18;margin-bottom:22px;color:#fff;}
.hero h1 em{font-style:normal;color:var(--amber-400);font-weight:800;}
.hero p.lead{font-size:16.5px;color:rgba(255,255,255,.68);max-width:520px;margin-bottom:36px;}
.hero-cta{display:flex;gap:14px;margin-bottom:44px;flex-wrap:wrap;}
.hero-cities{display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center;color:rgba(255,255,255,.5);font-size:13.5px;}
.hero-cities .label{color:rgba(255,255,255,.4);font-family:var(--mono);letter-spacing:.06em;font-size:11.5px;}
.hero-cities a{color:rgba(255,255,255,.78);border-bottom:1px dotted rgba(255,255,255,.3);padding-bottom:1px;}
.hero-cities a:hover{color:var(--amber-400);border-color:var(--amber-400);}

/* LED number panel — signature element */
.led-panel{background:linear-gradient(180deg, #0D2440, #0A1B30);border:1px solid rgba(255,255,255,.1);border-radius:20px;padding:30px 28px 26px;box-shadow:var(--shadow-soft), inset 0 1px 0 rgba(255,255,255,.06);position:relative;}
.led-panel .panel-label{display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:11px;color:rgba(255,255,255,.4);letter-spacing:.1em;text-transform:uppercase;margin-bottom:18px;}
.led-panel .panel-label .dot-row{display:flex;gap:5px;}
.led-panel .panel-label .dot-row span{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.18);}
.led-panel .panel-label .dot-row span:first-child{background:#E3573D;}
.led-panel .panel-label .dot-row span:nth-child(2){background:var(--amber-500);}
.led-panel .panel-label .dot-row span:last-child{background:#4CAF7D;}
.led-number{font-family:var(--mono);font-size:clamp(30px,3.6vw,40px);font-weight:600;letter-spacing:.06em;color:var(--amber-400);text-shadow:0 0 18px rgba(227,163,61,.5), 0 0 2px rgba(227,163,61,.8);display:flex;justify-content:center;gap:.08em;padding:22px 0 18px;border-top:1px dashed rgba(255,255,255,.12);border-bottom:1px dashed rgba(255,255,255,.12);}
.led-number.small{font-size:22px;padding:16px 0;}
.led-number .sep{color:rgba(240,195,116,.4);}
.led-caption{text-align:center;font-size:12.5px;color:rgba(255,255,255,.42);margin-top:16px;font-family:var(--mono);letter-spacing:.03em;}
.led-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:22px;}
.led-stats div{text-align:center;padding:14px 4px 0;border-top:1px solid rgba(255,255,255,.08);}
.led-stats b{display:block;font-family:var(--mono);font-size:19px;color:#fff;font-weight:700;}
.led-stats span{font-size:11px;color:rgba(255,255,255,.42);}

/* ---------- Stats bar ---------- */
.stats-bar{background:var(--navy-900);border-top:1px solid rgba(255,255,255,.08);margin-top:80px;padding:36px 0;position:relative;z-index:2;}
.stats-bar.standalone{margin-top:0;}
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.stat-item{text-align:center;color:#fff;border-left:1px solid rgba(255,255,255,.1);}
.stat-item:first-child{border-left:none;}
.stat-item b{font-family:var(--mono);font-size:clamp(26px,2.6vw,32px);font-weight:700;color:var(--amber-400);display:block;}
.stat-item span{font-size:13px;color:rgba(255,255,255,.55);}

/* ---------- Process ---------- */
.process-list{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:step;border-top:1px solid var(--line);border-left:1px solid var(--line);}
.step-card{border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:34px 28px 30px;background:#fff;position:relative;transition:background .2s ease;}
.step-card:hover{background:#FBFAF6;}
.step-num{font-family:var(--mono);font-size:34px;font-weight:700;-webkit-text-stroke:1.5px var(--navy-950);color:transparent;line-height:1;margin-bottom:18px;}
.step-card h3{font-size:17px;font-weight:800;color:var(--navy-950);margin-bottom:14px;}
.step-card ul li,.step-card ol li{font-size:13.5px;color:var(--ink-soft);padding-left:16px;position:relative;margin-bottom:8px;}
.step-card ul li::before{content:"—";position:absolute;left:0;color:var(--ink-faint);}
.process-cta{display:flex;align-items:center;justify-content:space-between;margin-top:36px;padding:22px 28px;background:var(--navy-950);border-radius:14px;color:#fff;flex-wrap:wrap;gap:16px;}
.process-cta p{color:rgba(255,255,255,.6);font-size:14px;}
.process-cta strong{color:#fff;font-size:16px;display:block;margin-bottom:4px;}

/* ---------- Document checklist ---------- */
.doc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.doc-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:var(--shadow-card);}
.doc-card h4{font-size:15.5px;font-weight:800;margin-bottom:12px;display:flex;align-items:center;gap:10px;}
.doc-card h4 i{width:28px;height:28px;border-radius:8px;background:var(--paper-dim);display:flex;align-items:center;justify-content:center;font-style:normal;font-family:var(--mono);font-size:13px;color:var(--blue-600);}
.doc-card ul li{font-size:13.5px;color:var(--ink-soft);padding-left:18px;position:relative;margin-bottom:8px;}
.doc-card ul li::before{content:"✓";position:absolute;left:0;color:var(--blue-600);font-weight:700;}

/* ---------- Carrier cards ---------- */
.carrier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.carrier-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px 26px;box-shadow:var(--shadow-card);display:flex;flex-direction:column;gap:16px;}
.carrier-top{display:flex;justify-content:space-between;align-items:flex-start;}
.carrier-name{font-size:19px;font-weight:800;color:var(--navy-950);}
.carrier-share{font-family:var(--mono);font-size:11.5px;background:var(--paper-dim);padding:4px 10px;border-radius:100px;color:var(--ink-soft);white-space:nowrap;}
.carrier-codes{font-family:var(--mono);font-size:22px;font-weight:700;color:var(--blue-600);letter-spacing:.02em;}
.carrier-card dl{display:grid;grid-template-columns:56px 1fr;gap:8px 10px;font-size:13.5px;}
.carrier-card dt{color:var(--ink-faint);}
.carrier-card dd{color:var(--ink);}
.carrier-card .btn{margin-top:6px;}
.carrier-card p.desc{font-size:13.5px;color:var(--ink-soft);}

.tips-box{margin-top:40px;background:var(--paper-dim);border-radius:16px;padding:30px 32px;display:grid;grid-template-columns:200px 1fr;gap:28px;align-items:start;}
.tips-box h4{font-size:15px;font-weight:800;color:var(--navy-950);}
.tips-box h4 span{display:block;font-family:var(--mono);font-size:11px;color:var(--ink-faint);font-weight:600;margin-top:4px;}
.tips-box ol{display:grid;grid-template-columns:1fr 1fr;gap:12px 28px;counter-reset:tip;}
.tips-box ol li{font-size:13.5px;color:var(--ink-soft);padding-left:26px;position:relative;counter-increment:tip;}
.tips-box ol li::before{content:counter(tip);position:absolute;left:0;top:-1px;width:18px;height:18px;border-radius:50%;background:var(--navy-950);color:#fff;font-family:var(--mono);font-size:10.5px;font-weight:700;display:flex;align-items:center;justify-content:center;}

/* ---------- Number tiers ---------- */
.tier-section{background:var(--navy-950);color:#fff;}
.tier-section .section-sub{color:rgba(255,255,255,.55);}
.tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.tier-card{background:linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:28px 24px 24px;}
.tier-head{display:flex;align-items:center;gap:10px;margin-bottom:6px;}
.tier-badge{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:16px;}
.tier-card.crown .tier-badge{background:rgba(227,163,61,.16);color:var(--amber-400);}
.tier-card.diamond .tier-badge{background:rgba(80,137,242,.16);color:var(--blue-500);}
.tier-card.five .tier-badge{background:rgba(76,175,125,.16);color:#6FD3A2;}
.tier-name{font-size:17px;font-weight:800;}
.tier-rule{font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.4);margin:6px 0 18px;}
.tier-numbers{display:flex;flex-direction:column;gap:9px;margin-bottom:20px;}
.tier-numbers span{font-family:var(--mono);font-size:15.5px;letter-spacing:.03em;padding:9px 12px;background:rgba(0,0,0,.22);border-radius:8px;border:1px solid rgba(255,255,255,.06);}

/* ---------- Pricing ---------- */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch;}
.price-card{background:#fff;border:1px solid var(--line);border-radius:18px;display:flex;flex-direction:column;box-shadow:var(--shadow-card);}
.price-card.featured{border:2px solid var(--blue-600);transform:translateY(-14px);box-shadow:0 24px 50px -18px rgba(46,111,224,.35);}
.price-head{padding:28px 26px 22px;border-bottom:1px solid var(--line);position:relative;border-radius:17px 17px 0 0;}
.price-card.featured .price-head{background:linear-gradient(180deg,#EEF3FF,#fff);}
.featured-flag{position:absolute;top:0;right:26px;transform:translateY(-50%);background:var(--blue-600);color:#fff;font-size:11.5px;font-weight:700;padding:5px 12px;border-radius:100px;letter-spacing:.02em;}
.price-name{font-size:15px;color:var(--ink-soft);font-weight:700;margin-bottom:10px;}
.price-amount{font-family:var(--mono);font-size:34px;font-weight:800;color:var(--navy-950);}
.price-amount span{font-size:14px;color:var(--ink-faint);font-weight:500;}
.price-for{font-size:12.5px;color:var(--ink-faint);margin-top:8px;}
.price-body{padding:22px 26px 26px;flex:1;display:flex;flex-direction:column;gap:14px;}
.price-body dl{display:grid;grid-template-columns:78px 1fr;gap:9px 10px;font-size:13.5px;}
.price-body dt{color:var(--ink-faint);}
.price-body dd{color:var(--ink);font-weight:600;}
.price-body .btn{margin-top:auto;}

.promo-banner{margin-top:40px;background:linear-gradient(120deg,#F0C374,#E3A33D);border-radius:16px;padding:26px 32px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;color:var(--navy-950);}
.promo-banner strong{font-size:17px;display:block;}
.promo-banner p{font-size:13.5px;color:rgba(19,33,50,.68);margin-top:4px;}

/* ---------- Compare table ---------- */
.compare-wrap{overflow-x:auto;margin-top:48px;border:1px solid var(--line);border-radius:16px;background:#fff;}
table.compare-table{min-width:640px;}
table.compare-table th,table.compare-table td{padding:16px 20px;text-align:left;font-size:13.5px;border-bottom:1px solid var(--line);}
table.compare-table th{background:var(--navy-950);color:#fff;font-weight:700;font-size:13px;}
table.compare-table th:first-child,table.compare-table td:first-child{color:var(--ink-faint);font-family:var(--mono);font-size:12px;}
table.compare-table tr:last-child td{border-bottom:none;}
table.compare-table td.highlight{color:var(--blue-600);font-weight:700;}

/* ---------- Add-ons ---------- */
.addon-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:44px;}
.addon-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 20px;}
.addon-card .addon-icon{width:36px;height:36px;border-radius:9px;background:var(--paper-dim);display:flex;align-items:center;justify-content:center;font-family:var(--mono);color:var(--blue-600);font-weight:700;margin-bottom:14px;}
.addon-card h4{font-size:14.5px;font-weight:800;margin-bottom:8px;}
.addon-card p{font-size:13px;color:var(--ink-soft);}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;margin:0 auto;}
.faq-list.left{margin:0;max-width:none;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 4px;width:100%;text-align:left;font-size:15.5px;font-weight:700;color:var(--navy-950);}
.faq-q .qtag{font-family:var(--mono);font-size:11px;color:var(--blue-600);font-weight:700;margin-right:12px;}
.faq-icon{width:22px;height:22px;border-radius:50%;border:1.5px solid var(--line);display:flex;align-items:center;justify-content:center;flex-shrink:0;position:relative;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--navy-950);}
.faq-icon::before{width:9px;height:1.5px;}
.faq-icon::after{width:1.5px;height:9px;transition:transform .2s ease;}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a p{padding:0 4px 22px 52px;font-size:14px;color:var(--ink-soft);max-width:660px;}
.faq-cat-title{font-size:13px;font-weight:800;color:var(--blue-600);text-transform:uppercase;letter-spacing:.06em;margin:36px 0 6px;font-family:var(--mono);}
.faq-cat-title:first-child{margin-top:0;}

/* ---------- Industries ---------- */
.industry-strip{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}
.industry-pill{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:100px;padding:12px 22px;font-size:14px;font-weight:700;color:var(--ink-soft);}
.industry-pill i{width:8px;height:8px;border-radius:50%;background:var(--blue-600);}

/* ---------- Articles ---------- */
.article-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.article-grid.three{grid-template-columns:repeat(3,1fr);}
.article-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:32px;box-shadow:var(--shadow-card);display:flex;flex-direction:column;}
.article-card .article-meta{font-family:var(--mono);font-size:11px;color:var(--ink-faint);margin-bottom:12px;letter-spacing:.04em;}
.article-card h3{font-size:19px;font-weight:800;color:var(--navy-950);margin-bottom:12px;}
.article-card > p{font-size:14px;color:var(--ink-soft);margin-bottom:18px;}
.article-card ul{display:flex;flex-direction:column;gap:8px;margin-bottom:20px;}
.article-card ul li{font-size:13.5px;color:var(--ink-soft);padding-left:18px;position:relative;}
.article-card ul li::before{content:"·";position:absolute;left:2px;color:var(--blue-600);font-weight:900;}
.article-link{font-size:13.5px;font-weight:700;color:var(--blue-600);display:inline-flex;align-items:center;gap:6px;margin-top:auto;}

/* ---------- Article body (single article page) ---------- */
.article-body{max-width:760px;margin:0 auto;}
.article-body p{font-size:15.5px;color:var(--ink-soft);margin-bottom:20px;}
.article-body h2{font-size:23px;margin:40px 0 16px;}
.article-body h3{font-size:18px;margin:28px 0 12px;}
.article-body ul,.article-body ol{margin-bottom:20px;}
.article-body ul li,.article-body ol li{font-size:15px;color:var(--ink-soft);padding-left:22px;position:relative;margin-bottom:10px;}
.article-body ul li::before{content:"•";position:absolute;left:4px;color:var(--blue-600);}
.article-body ol{counter-reset:abody;}
.article-body ol li{counter-increment:abody;}
.article-body ol li::before{content:counter(abody)".";position:absolute;left:0;color:var(--blue-600);font-weight:700;font-family:var(--mono);font-size:13px;}
.article-body blockquote{border-left:3px solid var(--amber-500);padding:4px 0 4px 22px;font-size:15px;color:var(--ink);margin:28px 0;font-weight:600;}
.article-cta{background:var(--navy-950);color:#fff;border-radius:16px;padding:30px 32px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;margin-top:48px;}
.article-cta strong{display:block;font-size:16px;margin-bottom:4px;}
.article-cta p{color:rgba(255,255,255,.6);font-size:13.5px;}
.article-nav{display:flex;justify-content:space-between;gap:20px;margin-top:56px;padding-top:28px;border-top:1px solid var(--line);flex-wrap:wrap;}
.article-nav a{font-size:13.5px;font-weight:700;color:var(--blue-600);}

/* ---------- Solutions ---------- */
.solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.solution-grid.wide{grid-template-columns:repeat(4,1fr);}
.solution-card{border-radius:16px;padding:30px 26px;color:#fff;position:relative;overflow:hidden;min-height:200px;display:flex;flex-direction:column;justify-content:flex-end;}
.solution-card::before{content:"";position:absolute;inset:0;background:var(--navy-950);opacity:.92;}
.solution-card.c1{background:linear-gradient(135deg,#173A5E,#0A1B30);}
.solution-card.c2{background:linear-gradient(135deg,#5A3B1B,#2A1808);}
.solution-card.c3{background:linear-gradient(135deg,#1B4A3A,#0A1B30);}
.solution-card.c4{background:linear-gradient(135deg,#4A1B3A,#0A1B30);}
.solution-card.c5{background:linear-gradient(135deg,#1B2C4A,#0A1B30);}
.solution-card.c6{background:linear-gradient(135deg,#4A3A1B,#0A1B30);}
.solution-card *{position:relative;z-index:1;}
.solution-tag{font-family:var(--mono);font-size:11px;color:rgba(255,255,255,.5);letter-spacing:.08em;margin-bottom:10px;}
.solution-card h3{font-size:18px;font-weight:800;margin-bottom:10px;color:#fff;}
.solution-card p{font-size:13.5px;color:rgba(255,255,255,.62);margin-bottom:14px;}
.solution-card ul{margin-top:8px;}
.solution-card ul li{font-size:12.5px;color:rgba(255,255,255,.55);padding-left:14px;position:relative;margin-bottom:6px;}
.solution-card ul li::before{content:"—";position:absolute;left:0;color:rgba(255,255,255,.35);}

/* ---------- About page ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.about-copy p{font-size:15.5px;color:var(--ink-soft);margin-bottom:18px;}
.value-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:20px;}
.value-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;}
.value-card b{display:block;font-size:15px;color:var(--navy-950);margin-bottom:8px;}
.value-card span{font-size:13px;color:var(--ink-soft);}
.timeline{position:relative;padding-left:32px;}
.timeline::before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:1.5px;background:var(--line-dark);}
.timeline-item{position:relative;padding-bottom:34px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-item::before{content:"";position:absolute;left:-32px;top:4px;width:11px;height:11px;border-radius:50%;background:var(--amber-500);border:3px solid var(--navy-950);}
.timeline-item b{display:block;font-family:var(--mono);color:var(--amber-400);font-size:14px;margin-bottom:6px;}
.timeline-item p{color:rgba(255,255,255,.6);font-size:14px;}

/* ---------- Contact page ---------- */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px;box-shadow:var(--shadow-card);}
.contact-info-list{display:flex;flex-direction:column;gap:20px;margin-top:22px;}
.contact-info-item{display:flex;gap:16px;align-items:flex-start;}
.contact-info-item i{width:40px;height:40px;border-radius:10px;background:var(--paper-dim);display:flex;align-items:center;justify-content:center;font-style:normal;font-family:var(--mono);color:var(--blue-600);font-weight:700;flex-shrink:0;}
.contact-info-item b{display:block;font-size:14px;margin-bottom:3px;}
.contact-info-item span{font-size:13.5px;color:var(--ink-soft);}
.office-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px;}
.office-card{background:var(--paper-dim);border-radius:12px;padding:16px 18px;}
.office-card b{display:block;font-size:13.5px;margin-bottom:4px;}
.office-card span{font-size:12.5px;color:var(--ink-soft);}
.form-field{margin-bottom:16px;}
.form-field label{display:block;font-size:13px;font-weight:700;color:var(--navy-950);margin-bottom:7px;}
.form-field input,.form-field select,.form-field textarea{width:100%;border:1.5px solid var(--line);border-radius:8px;padding:11px 14px;font-size:14px;font-family:inherit;color:var(--ink);background:var(--paper);}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{outline:2px solid var(--blue-600);outline-offset:1px;border-color:var(--blue-600);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.qr-group{display:flex;gap:18px;}
.qr-item{text-align:center;}
.qr-item img{width:96px;height:96px;border-radius:10px;background:#fff;padding:6px;object-fit:cover;box-shadow:0 10px 24px -10px rgba(0,0,0,.4);}
.qr-item span{display:block;font-size:11.5px;color:rgba(255,255,255,.5);margin-top:8px;}
.qr-item.on-light span{color:var(--ink-soft);}
.qr-item.on-light img{box-shadow:var(--shadow-card);border:1px solid var(--line);}

/* ---------- Cities ---------- */
.city-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.city-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:var(--shadow-card);}
.city-card h3{font-size:17px;font-weight:800;margin-bottom:10px;}
.city-card p{font-size:13.5px;color:var(--ink-soft);margin-bottom:14px;}
.city-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px;}
.city-tags span{font-family:var(--mono);font-size:11px;background:var(--paper-dim);padding:4px 9px;border-radius:100px;color:var(--ink-soft);}
.city-chip-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;}
.city-chip-cloud span{font-size:13px;color:var(--ink-soft);background:#fff;border:1px solid var(--line);padding:8px 16px;border-radius:100px;}

/* ---------- Footer ---------- */
footer{background:var(--navy-950);color:rgba(255,255,255,.65);padding:76px 0 0;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr auto;gap:40px;padding-bottom:56px;border-bottom:1px solid rgba(255,255,255,.1);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand img{width:34px;height:34px;border-radius:8px;}
.footer-brand b{color:#fff;font-size:17px;}
.footer-col h4{color:#fff;font-size:13.5px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;font-size:13.5px;}
.footer-col ul li a:hover{color:#fff;}
.footer-hotline{font-family:var(--mono);font-size:26px;color:var(--amber-400);font-weight:700;margin-top:4px;}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:24px 0;font-size:12.5px;color:rgba(255,255,255,.4);flex-wrap:wrap;gap:10px;}
.footer-bottom a:hover{color:#fff;}

/* ---------- Back to top ---------- */
.back-to-top{position:fixed;right:26px;bottom:26px;width:48px;height:48px;border-radius:50%;background:var(--navy-950);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 14px 30px -10px rgba(10,27,48,.5);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .25s ease, transform .25s ease, background .2s ease;z-index:90;}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-to-top:hover{background:var(--blue-600);}
.back-to-top svg{width:18px;height:18px;}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;}
  .process-list{grid-template-columns:1fr 1fr;}
  .carrier-grid,.tier-grid,.pricing-grid,.article-grid,.solution-grid,.doc-grid,.city-grid{grid-template-columns:1fr 1fr;}
  .solution-grid.wide{grid-template-columns:1fr 1fr;}
  .addon-grid{grid-template-columns:1fr 1fr;}
  .price-card.featured{transform:none;}
  .stats-row{grid-template-columns:1fr 1fr;gap:24px 0;}
  .stat-item:nth-child(3){border-left:none;}
  .tips-box{grid-template-columns:1fr;}
  .tips-box ol{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr 1fr;}
  .about-grid{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
}
@media (max-width:1180px){
  nav.main-links{display:none;}
  .menu-toggle{display:flex;}
  .hotline-mini{display:none;}
}
@media (max-width:720px){
  .process-list,.article-grid.three{grid-template-columns:1fr;}
  .carrier-grid,.tier-grid,.pricing-grid,.article-grid,.solution-grid,.doc-grid,.city-grid,.addon-grid,.solution-grid.wide,.value-grid,.form-row,.office-grid{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;}
  section{padding:64px 0;}
  .led-number{font-size:24px;}
  .back-to-top{right:16px;bottom:16px;width:44px;height:44px;}
}