/* VNKI 官网样式 - Codex 可改视觉。DO NOT MODIFY: 不要改名、不要删除首页 JS 依赖的 class/id（.plan-grid, .card, .plan, .btn, #plan-grid）。品牌色同主题。 */
/* VNKI Modern Network — design system
   Palette: #142A48, #17243A, #2563EB, #F5F9FF, #FFFFFF
   No gradients, no neon glows, no dense icon rows. */
:root{
  --navy:#142A48; --navy2:#17243A; --blue:#2563EB; --blue-dark:#1D4ED8;
  --bg:#F5F9FF; --card:#FFFFFF; --text:#142A48; --muted:#5B6B82;
  --border:#E3E8F0; --border-strong:#CBD5E1; --success:#15803D; --danger:#B42318;
  --r-card:16px; --r:12px; --r-sm:10px;
  --s1:8px; --s2:16px; --s3:24px; --s4:32px; --s5:48px; --s6:64px;
  --shadow:0 1px 2px rgba(11,18,32,.06),0 8px 24px rgba(11,18,32,.06);
  --font:Inter,system-ui,-apple-system,"Segoe UI",PingFang SC,"Microsoft YaHei",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
button{font:inherit;cursor:pointer}
input,select{font:inherit;color:var(--text)}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.eyebrow{font-size:13px;letter-spacing:.18em;font-weight:700;color:var(--blue);text-transform:uppercase}
.muted{color:var(--muted)}
.small{font-size:14px}
.notice{background:#EFF2FF;border:1px solid #D6DEFF;color:var(--navy2);border-radius:var(--r);padding:12px 16px;font-size:14px}
.warn{background:#FFF7E6;border:1px solid #F5D98B;color:#7A4A00;border-radius:var(--r);padding:12px 16px;font-size:14px}
.error{background:#FEF2F2;border:1px solid #FECACA;color:var(--danger);border-radius:var(--r);padding:12px 16px;font-size:14px}
.hidden{display:none!important}

/* Wordmark: geometric type only. No globe / plane / lightning marks. */
.wordmark{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.14em;font-size:22px;color:var(--navy);line-height:1}
.wordmark .dot{width:10px;height:10px;background:var(--blue);border-radius:2px;flex:0 0 auto}
.wordmark.light{color:#fff}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 20px;border-radius:var(--r-sm);border:1px solid transparent;background:var(--blue);color:#fff;font-weight:600;transition:background .15s ease,transform .1s ease,border-color .15s ease}
.btn:hover{background:var(--blue-dark);text-decoration:none}
.btn:active{transform:translateY(1px)}
.btn.secondary{background:#fff;color:var(--navy2);border-color:var(--border-strong)}
.btn.secondary:hover{border-color:var(--blue);color:var(--blue)}
.btn.ghost{background:transparent;color:var(--navy2);border-color:transparent}
.btn.small{min-height:36px;padding:7px 14px;font-size:14px}
.btn:disabled{opacity:.55;cursor:not-allowed}

/* Cards / sections */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--shadow);padding:24px}
.section{padding:56px 0}
.section h2{font-size:28px;line-height:1.3;margin:0 0 8px}
.section .lead{color:var(--muted);margin:0 0 24px;max-width:680px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:900px){.grid3,.grid2{grid-template-columns:1fr}.section{padding:40px 0}}

/* Plan cards */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:stretch}
@media(max-width:1000px){.plan-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.plan-grid{grid-template-columns:1fr}}
.plan{display:flex;flex-direction:column;gap:12px}
.plan.featured{border-color:var(--blue);box-shadow:0 1px 2px rgba(66,99,235,.15),0 12px 32px rgba(66,99,235,.12)}
.plan .tag{align-self:flex-start;background:var(--navy);color:#fff;font-size:12px;font-weight:700;letter-spacing:.06em;padding:4px 10px;border-radius:999px}
.plan h3{margin:0;font-size:20px}
.plan .price{font-size:36px;font-weight:800;line-height:1.1}
.plan .price span{font-size:15px;font-weight:500;color:var(--muted)}
.plan ul{list-style:none;margin:0;padding:0;display:grid;gap:8px;color:var(--navy2);font-size:15px}
.plan ul li{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid var(--bg);padding-bottom:8px}
.plan ul li b{font-weight:700}
.period-row{display:flex;flex-wrap:wrap;gap:8px}
.period-row button{border:1px solid var(--border-strong);background:#fff;color:var(--navy2);border-radius:999px;padding:6px 12px;font-size:13px}
.period-row button.active{background:var(--navy);color:#fff;border-color:var(--navy)}

/* Forms */
.field{display:grid;gap:6px;margin-bottom:16px}
.field label{font-weight:600;font-size:14px}
.field input{width:100%;min-height:44px;border:1px solid var(--border-strong);border-radius:var(--r-sm);padding:10px 12px;background:#fff}
.field input:focus{border-color:var(--blue);outline:2px solid rgba(66,99,235,.25);outline-offset:0}
.form-card{max-width:480px;margin:0 auto}

/* Shop shell: dark sidebar + light content */
.layout{display:grid;grid-template-columns:248px minmax(0,1fr);min-height:100vh}
.sidebar{background:var(--navy);color:#E6EAF2;padding:20px 16px;display:flex;flex-direction:column;gap:24px;position:sticky;top:0;height:100vh}
.sidebar nav{display:grid;gap:4px}
.sidebar nav a,.sidebar nav button{color:#C7D0DE;text-align:left;background:transparent;border:0;padding:10px 12px;border-radius:var(--r-sm);font-weight:600}
.sidebar nav a:hover,.sidebar nav button:hover{color:#fff;background:var(--navy2);text-decoration:none}
.sidebar nav a.active,.sidebar nav button.active{color:#fff;background:var(--blue)}
.sidebar .side-foot{margin-top:auto;color:#8A97AC;font-size:13px;line-height:1.6}
.topbar{display:none}
.main{padding:32px;max-width:1040px;width:100%;margin:0 auto}
.main h1{font-size:30px;line-height:1.3;margin:0 0 8px}
@media(max-width:900px){
  .layout{grid-template-columns:1fr}
  .sidebar{position:fixed;inset:0 auto 0 0;width:260px;z-index:50;transform:translateX(-105%);transition:transform .2s ease}
  .sidebar.open{transform:translateX(0)}
  .topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#fff;border-bottom:1px solid var(--border);padding:12px 16px;position:sticky;top:0;z-index:40}
  .main{padding:20px 16px}
}

/* Console */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:900px){.stat-grid{grid-template-columns:1fr}}
.stat .value{font-size:28px;font-weight:800;line-height:1.2}
.progress{height:10px;background:var(--bg);border:1px solid var(--border);border-radius:999px;overflow:hidden}
.progress i{display:block;height:100%;background:var(--blue)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;word-break:break-all;font-size:14px}
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th,.table td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--border);vertical-align:top}
.table th{color:var(--muted);font-weight:600}

/* www top nav */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:40}
.site-header .bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0}
.site-header nav{display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.site-header nav a{color:var(--navy2);font-weight:600}
.hero{padding:72px 0 56px}
.hero h1{font-size:52px;line-height:1.15;margin:16px 0}
@media(max-width:700px){.hero h1{font-size:36px}.hero{padding:48px 0 40px}}
.hero p{font-size:18px;color:var(--muted);max-width:640px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:900px){.steps{grid-template-columns:1fr}}
.step-num{width:36px;height:36px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.site-footer{border-top:1px solid var(--border);padding:32px 0;color:var(--muted);font-size:14px}
.site-footer .bar{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* Shared VNKI visual language */
:root{--r-card:20px;--r-sm:12px;--shadow:0 8px 28px rgba(11,18,32,.035)}
.wrap{max-width:1200px}
.site-header .bar{padding:18px 24px}
.site-header nav{gap:24px;font-size:14px}
.hero{position:relative;overflow:hidden;max-width:min(1200px,calc(100% - 48px));margin:32px auto 0;padding:80px 64px 88px;border-radius:24px;background:var(--navy);color:#fff}
.hero:after{content:"";position:absolute;right:-90px;top:-120px;width:440px;height:440px;border:1px solid rgba(255,255,255,.16);border-radius:50%;box-shadow:0 0 0 56px rgba(255,255,255,.025),0 0 0 112px rgba(255,255,255,.025);pointer-events:none}
.hero h1,.hero p,.hero .cta-row{position:relative;z-index:1}
.hero h1{font-size:clamp(42px,5vw,66px);letter-spacing:-.045em;line-height:1.18}
.hero p{color:#c4cfdf;max-width:530px}
.hero .eyebrow{color:#a7b9ff;font-size:12px}
.hero .btn.secondary{background:transparent;color:#fff;border-color:#65748c}
.hero .btn.secondary:hover{border-color:#fff}
.section{padding:64px 0}
.wrap.section{padding-left:24px;padding-right:24px}
.hero + .section{margin-top:24px}
.section h2{font-size:32px;letter-spacing:-.025em}
.section .lead{margin-top:12px;line-height:1.8}
.card{padding:28px}
.card h3{letter-spacing:-.015em}
.plan{gap:16px}
.plan .btn{margin-top:auto}
.plan.featured{box-shadow:inset 0 3px var(--blue),var(--shadow)}
.plan .tag{background:#edf1ff;color:#304dc5}
.step-num{background:#edf1ff;color:var(--blue);border-radius:12px}
.site-footer{background:#fff}
@media(max-width:700px){
  .site-header .bar{padding:14px 20px;gap:12px;flex-wrap:wrap}
  .site-header nav{gap:16px}
  .hero{max-width:calc(100% - 32px);margin:16px 16px 0;padding:56px 28px 64px}
  .hero:after{width:260px;height:260px;right:-160px;top:-80px}
  .section{padding:48px 0}
  .section h2{font-size:27px}
  .card{padding:24px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}

/* Immersive VNKI network illustration */
.hero{min-height:590px;display:flex;flex-direction:column;justify-content:center;padding:88px 72px 100px;background:#142A48}
.hero:after{display:none}
.network-art{position:absolute;inset:0 0 0 34%;background:url('/network.svg') center right / contain no-repeat;opacity:.8;pointer-events:none}
.hero h1{font-size:clamp(48px,6vw,82px);max-width:700px}
.hero p:not(.eyebrow){max-width:480px}
.hero-caption{position:absolute;bottom:30px;left:72px;color:#9dabc1;font-size:11px;letter-spacing:.16em;font-weight:700}
.hero-caption span{color:#8fa7ff}
@media(max-width:700px){.hero{min-height:580px;padding:64px 28px 85px;justify-content:flex-end}.network-art{inset:0 0 28% 8%;opacity:.52;background-position:center top}.hero h1{font-size:clamp(40px,10vw,58px)}.hero-caption{left:28px;bottom:24px}}

/* VNKI 三主线 + 客服窗口（新增，勿删已有 class） */
.pillar-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:32px}
.pillar{text-align:left;cursor:pointer}
#support-fab{position:fixed;right:20px;bottom:20px;z-index:999;background:#2563EB;color:#fff;border:0;border-radius:999px;padding:12px 20px;font-size:15px;cursor:pointer;box-shadow:0 8px 24px rgba(0,0,0,.25)}
#support-panel{position:fixed;right:20px;bottom:76px;z-index:999;width:min(380px,calc(100vw - 40px));max-height:70vh;overflow:auto;background:#fff;color:#142A48;border:1px solid #e5e7eb;border-radius:16px;padding:16px;box-shadow:0 16px 40px rgba(0,0,0,.25)}
.support-head{display:flex;justify-content:space-between;align-items:center}
.support-note,.support-answer,.small{font-size:14px;color:#475569}
.support-chips{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.support-chips button{background:#F5F9FF;border:1px solid #e5e7eb;border-radius:999px;padding:6px 12px;cursor:pointer;font-size:13px}
.support-row{display:flex;gap:8px}
.support-row input{flex:1;padding:10px;border:1px solid #e5e7eb;border-radius:8px}
.support-row button,.support-form button,#support-solved,#support-unsolved{background:#2563EB;color:#fff;border:0;border-radius:8px;padding:10px 14px;cursor:pointer}
.support-answer{margin-top:12px;background:#F5F9FF;border-radius:12px;padding:12px}
.support-form input,.support-form textarea{width:100%;box-sizing:border-box;padding:10px;border:1px solid #e5e7eb;border-radius:8px;margin:6px 0}
@media(max-width:700px){.pillar-grid{grid-template-columns:1fr}}

/* 2026-10-27 模板整合新增（不改原有样式）：分组导航、购买筛选、一键订阅弹窗、设备分页 */
.nav-group{color:#94a3b8;font-size:12px;margin:20px 0 4px}
.plan-filters{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}
.plan-filters button{background:#fff;border:1px solid var(--border,#e5e7eb);border-radius:999px;padding:8px 16px;cursor:pointer}
.plan-filters button.active{background:#2563EB;color:#fff;border-color:#2563EB}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:flex-start;justify-content:center;padding:40px 16px;z-index:50;overflow:auto}
.modal-card{background:#fff;border-radius:16px;padding:24px;max-width:720px;width:100%}
.device-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}
.device-tabs button{background:#fff;border:1px solid #e5e7eb;border-radius:999px;padding:8px 16px;cursor:pointer}
.device-tabs button.active{background:#2563EB;color:#fff;border-color:#2563EB}

/* VNKI Visual Identity 2.0 — Arctic Blue (2026-10-27, shop) */
:root{--vnki-blue:#2563EB;--vnki-ink:#142A48;--vnki-ice:#F5F9FF;--vnki-soft:#DBEAFF;--vnki-white:#FFFFFF}
.wordmark .logo-img{height:28px;width:auto;display:inline-block}
.service-card{border-radius:20px}
.service-line{font-size:14px;font-weight:600;color:#475569;margin:-4px 0 12px}
.service-media{border-top:4px solid #8055E8}
.service-ai{border-top:4px solid #2563EB}
.service-trade{border-top:4px solid #218875}