/* ============================================================
   御远 Connyon — 视觉风格：远极系统 (YuanjiSys) 风格
  深色 Hero · 科技蓝/电光靛蓝 · 重字重 Inter · 胶囊按钮 · 圆角卡片
   ============================================================ */
:root{
  --brand-blue:#30ACFA;
  --brand-blue-600:#1E90E0;
  --brand-blue-700:#1673BE;
  --brand-accent:#7C8CFF;
  --brand-accent-soft:#AFC4FF;
  --brand-red:#EC1C24;

  --ink:#0F1B2D;
  --ink-2:#16233A;
  --ink-3:#22334F;
  --slate:#5A6B85;
  --slate-2:#8695AB;
  --line:#E4EAF2;
  --line-2:#EEF3F9;
  --bg:#FFFFFF;
  --bg-soft:#F5F8FC;
  --bg-soft-2:#EFF4FA;
  --white:#FFFFFF;

  /* legacy token names kept & repointed so product.css / risk-check.css inherit the new palette */
  --gray:#F5F8FC;
  --text:#0F1B2D;
  --text-2:#5A6B85;
  --text-3:#8695AB;
  --border:#E4EAF2;
  --blue:#1E90E0;
  --blue-h:#1673BE;
  --blue-dark:#7C8CFF;

  --radius-sm:10px; --radius:16px; --radius-lg:24px; --radius-xl:32px;
  --shadow-sm:0 2px 8px rgba(15,27,45,.06);
  --shadow:0 12px 32px rgba(15,27,45,.08);
  --shadow-lg:0 30px 70px rgba(15,27,45,.14);
  --shadow-blue:0 18px 40px rgba(48,172,250,.28);
  --container:1200px;
  --nav-h:72px;
  --ease:cubic-bezier(.28,.11,.32,1);
  --grad-blue:linear-gradient(135deg,#30ACFA 0%,#1E90E0 55%,#1673BE 100%);
  --grad-accent:linear-gradient(100deg,#AFC4FF,#30ACFA 48%,#7C8CFF);
  --grad-hero:radial-gradient(1200px 700px at 78% -10%,rgba(48,172,250,.28),transparent 60%),
              radial-gradient(900px 600px at 8% 20%,rgba(124,140,255,.16),transparent 55%),
              linear-gradient(160deg,#0B1626 0%,#0F1B2D 45%,#132a44 100%);
  --font:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 16px);-webkit-text-size-adjust:100%}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.18;font-weight:800;letter-spacing:-.01em;color:var(--ink)}
section{position:relative;scroll-margin-top:var(--nav-h)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

.grad,.text-grad{background:var(--grad-blue);-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand-blue-700)}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad-blue)}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;border:1px solid transparent;cursor:pointer;transition:transform .25s var(--ease),box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;white-space:nowrap}
.btn-sm{padding:9px 17px;font-size:14px}
.btn-primary{background:var(--grad-blue);color:#fff;box-shadow:var(--shadow-blue)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 46px rgba(48,172,250,.42)}
.btn-ghost{border:1.5px solid var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--brand-blue);color:var(--brand-blue-700);transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--ink)}
.btn-white:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
/* ghost on dark contexts -> translucent white */
.hero .btn-ghost,.p-hero .btn-ghost,.tool-hero .btn-ghost,#about .btn-ghost,.p-section.dark .btn-ghost,.share .btn-ghost{
  background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.24);color:#fff;backdrop-filter:blur(6px)}
.hero .btn-ghost:hover,.p-hero .btn-ghost:hover,.tool-hero .btn-ghost:hover,#about .btn-ghost:hover,.p-section.dark .btn-ghost:hover{background:rgba(255,255,255,.18);color:#fff}

/* ---- Header ---- */
#site-header{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);display:flex;align-items:center;border-bottom:1px solid transparent;transition:background .3s ease,box-shadow .3s ease,border-color .3s ease}
#site-header .nav{display:flex;align-items:center;height:var(--nav-h);gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800}
.brand .mark{width:30px;height:30px;color:var(--brand-blue)}
.brand-name{font-size:18px;letter-spacing:.01em;color:#fff;transition:color .3s ease}
.brand-name em{font-style:normal;color:var(--brand-accent-soft);font-weight:700;font-size:12px;letter-spacing:.18em;text-transform:uppercase;margin-left:4px}
.nav-links{display:flex;gap:4px;margin-left:8px}
.nav-links a{padding:9px 15px;border-radius:999px;font-weight:600;font-size:15px;color:rgba(255,255,255,.84);transition:color .2s ease,background .2s ease}
.nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.12)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.lang-toggle{height:34px;padding:0 14px;border-radius:999px;font-weight:700;font-size:13px;color:#fff;border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.08);cursor:pointer;transition:.25s ease}
.lang-toggle:hover{background:rgba(255,255,255,.18)}
.nav-toggle{display:none;width:42px;height:38px;border-radius:11px;border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.08);color:#fff;font-size:18px;cursor:pointer}
/* scrolled / solid white header */
#site-header.scrolled{background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(14px);box-shadow:var(--shadow-sm);border-color:var(--line)}
#site-header.scrolled .brand-name{color:var(--ink)}
#site-header.scrolled .brand-name em{color:var(--brand-blue-700)}
#site-header.scrolled .nav-links a{color:var(--slate)}
#site-header.scrolled .nav-links a:hover,#site-header.scrolled .nav-links a.active{color:var(--brand-blue-700);background:var(--bg-soft-2)}
#site-header.scrolled .lang-toggle,#site-header.scrolled .nav-toggle{color:var(--ink-3);border-color:var(--line);background:#fff}
#site-header.scrolled .lang-toggle:hover{background:var(--bg-soft)}

/* ---- Hero (dark) ---- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;background:var(--grad-hero);color:#fff;overflow:hidden;padding-top:var(--nav-h);text-align:center}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:radial-gradient(1000px 700px at 50% 34%,#000 30%,transparent 78%);mask-image:radial-gradient(1000px 700px at 50% 34%,#000 30%,transparent 78%)}
.hero-inner{position:relative;z-index:2;max-width:900px;margin:0 auto;padding:80px 24px}
.hero-badge{display:inline-flex;align-items:center;gap:9px;padding:7px 16px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);font-size:13.5px;font-weight:600;color:#CFE8FF;margin-bottom:24px}
.hero-badge .mark{width:20px;height:20px;color:var(--brand-blue)}
.hero .eyebrow{color:var(--brand-accent-soft);justify-content:center}
.hero-title{font-size:clamp(40px,6.4vw,72px);line-height:1.04;letter-spacing:-.02em;color:#fff;margin:16px 0 20px}
.hero-title .grad{background:var(--grad-accent);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{max-width:640px;margin:0 auto 34px;color:#B8C7DD;font-size:clamp(16px,1.6vw,19px)}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-scroll{display:none}

/* ---- Metrics as stat cards ---- */
.metrics{background:var(--bg-soft);padding:64px 0}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;max-width:var(--container);margin:0 auto;padding:0 24px}
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 24px;text-align:center;box-shadow:var(--shadow-sm);transition:transform .3s ease,box-shadow .3s ease}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.metric-num{font-size:clamp(30px,3.4vw,42px);font-weight:800;letter-spacing:-.02em;line-height:1}
.metric-label{color:var(--slate);font-size:15px;margin-top:8px}

/* ---- Sections ---- */
.section{padding:96px 0}
.section-alt{background:var(--bg-soft)}
#platform,#capabilities{background:var(--bg-soft)}
.section-head{max-width:760px;margin:0 auto 56px;text-align:center}
.section-head h2{font-size:clamp(28px,4vw,44px);margin:16px 0 14px}
.section-sub{color:var(--slate);font-size:17px}

/* ---- Cards (platform pillars) ---- */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px;transition:transform .35s ease,box-shadow .35s ease}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.card h3{font-size:20px;margin:16px 0 9px}
.card p{color:var(--slate);font-size:15px}
.ic{width:54px;height:54px;border-radius:15px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(48,172,250,.14),rgba(124,140,255,.12));color:var(--brand-blue-700)}
.ic svg{width:27px;height:27px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* ---- Products ---- */
.products{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(280px,.75fr);gap:24px;align-items:stretch}
.product-card{position:relative;display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px;overflow:hidden;transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease}
.product-card::after{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:var(--grad-blue);transform:scaleX(0);transform-origin:left;transition:transform .4s ease}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.product-card:hover::after{transform:scaleX(1)}
.product-mark svg{width:76px;height:76px;color:var(--brand-blue)}
.product-tag{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--brand-blue-700);text-transform:uppercase;margin-top:6px}
.product-body h3{font-size:23px;font-weight:800;margin:6px 0 10px}
.product-body h3 .mono{color:var(--slate);font-weight:600;font-size:18px}
.product-body>p{color:var(--slate);font-size:15px;line-height:1.6}
.feat{list-style:none;display:flex;flex-wrap:wrap;gap:9px 18px;margin:16px 0}
.feat li{color:var(--ink-3);font-size:14.5px;display:flex;align-items:center;gap:8px}
.feat li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-blue)}
.product-metrics{font-size:13.5px;color:var(--slate-2);border-top:1px solid var(--line);padding-top:16px;margin-top:4px}
.product-primary{border-color:rgba(48,172,250,.32);box-shadow:0 18px 48px rgba(22,115,190,.1)}
.product-primary .product-mark svg{width:92px;height:92px}
.product-primary .product-body h3{font-size:28px}
.product-primary .product-body>p{font-size:16px;max-width:720px}
.product-secondary{background:var(--bg-soft);box-shadow:none}

/* ---- Nova Shield spotlight ---- */
.shield-spotlight{background:var(--bg-soft)}
.shield-stage{overflow:hidden;background:var(--grad-hero);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);color:#fff}
.shield-kpis{display:grid;grid-template-columns:repeat(4,1fr)}
.shield-kpis>div{min-height:164px;padding:34px;display:flex;flex-direction:column;justify-content:flex-end;border-right:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08)}
.shield-kpis strong{font-size:clamp(25px,3vw,38px);line-height:1;color:#fff;letter-spacing:-.01em}
.shield-kpis span{color:#93A8C4;font-size:13.5px;margin-top:10px}
.shield-copy{padding:58px;display:flex;flex-direction:column;justify-content:center}
.proof-label{font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--brand-accent-soft);margin-bottom:16px}
.shield-copy h3{color:#fff;font-size:clamp(25px,3vw,38px);line-height:1.25;margin-bottom:18px}
.shield-copy p{color:#B8C7DD;font-size:16px;line-height:1.75;margin-bottom:28px}
.shield-copy .hero-cta{justify-content:flex-start}
.shield-copy .btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.22);color:#fff}

/* ---- Engineering depth ---- */
.technology-deep{background:#fff}
.pipeline-visual{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;padding:10px;border:1px solid var(--line);background:var(--bg-soft);border-radius:var(--radius-lg)}
.pipeline-visual>div{position:relative;min-width:0;padding:24px 18px;background:#fff;border:1px solid var(--line);border-radius:14px}
.pipeline-visual>div:not(:last-child)::after{content:"";position:absolute;right:-10px;top:50%;z-index:2;width:12px;height:2px;background:var(--brand-blue)}
.pipeline-visual span{display:block;color:var(--brand-blue-700);font-size:12px;font-weight:800;letter-spacing:.12em}
.pipeline-visual b{display:block;font-size:18px;margin:8px 0 4px}
.pipeline-visual small{display:block;color:var(--slate);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:22px}
.tech-item{padding:30px;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff}
.tech-item>span{display:inline-block;color:var(--brand-blue-700);font-size:28px;font-weight:800;line-height:1;margin-bottom:18px}
.tech-item h3{font-size:19px;margin-bottom:9px}
.tech-item p{color:var(--slate);font-size:14.5px}

/* ---- Defense funnel ---- */
.defense-system{background:var(--bg-soft)}
.defense-flow{display:grid;grid-template-columns:1.25fr 1.08fr .92fr .78fr .68fr;align-items:stretch;gap:8px;margin-bottom:24px}
.defense-flow>div{position:relative;min-height:150px;padding:24px 20px;display:flex;flex-direction:column;justify-content:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.defense-flow>div::after{content:"";position:absolute;right:-10px;top:50%;width:12px;height:2px;background:var(--brand-blue);z-index:2}
.defense-flow>div:last-child::after{display:none}
.defense-flow span{font-size:23px;font-weight:800;color:var(--brand-blue-700)}
.defense-flow b{font-size:15px;margin:7px 0 2px}
.defense-flow small{color:var(--slate);font-size:12px}
.defense-flow .clean{background:var(--grad-blue);border-color:transparent}
.defense-flow .clean span,.defense-flow .clean b{color:#fff}
.defense-flow .clean small{color:#D6F3FF}
.defense-cards .card{box-shadow:var(--shadow-sm)}
.evidence-num{font-size:clamp(25px,2.8vw,34px);font-weight:800;color:var(--brand-blue-700);line-height:1;margin-bottom:18px}

/* ---- Capabilities ---- */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;transition:transform .3s ease,box-shadow .3s ease}
.cap:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.cap .ic{background:var(--grad-blue);color:#fff;margin-bottom:18px}
.cap h3{font-size:18px;margin-bottom:8px}
.cap p{color:var(--slate);font-size:14.5px}

/* ---- Architecture flow ---- */
.flow{display:flex;align-items:stretch;gap:10px}
.flow-node{flex:1;padding:30px 22px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:transform .3s ease,box-shadow .3s ease}
.flow-node:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.flow-node.accent{background:var(--grad-hero);color:#fff;border-color:transparent}
.flow-node.accent p{color:#B8C7DD}
.flow-step{font-size:13px;font-weight:800;letter-spacing:.14em;color:var(--brand-blue-700)}
.flow-node.accent .flow-step{color:var(--brand-accent-soft)}
.flow-node h4{font-size:17px;margin:10px 0 7px}
.flow-node.accent h4{color:#fff}
.flow-node p{color:var(--slate);font-size:14px}
.flow-arrow{display:flex;align-items:center;color:var(--brand-blue);font-size:22px}

/* ---- About (ink) ---- */
#about{background:var(--ink);color:#D5DEEC}
#about .eyebrow{color:var(--brand-accent-soft)}
.about-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center}
.about-statement{font-size:clamp(22px,3.2vw,32px);font-weight:800;line-height:1.28;letter-spacing:-.01em;color:#fff;margin:16px 0 28px}
.about-statement .grad{background:var(--grad-accent);-webkit-background-clip:text;background-clip:text;color:transparent}
.about-right p{color:#A7B4C8;margin-bottom:16px;font-size:16px;line-height:1.7}
.yy{display:flex;flex-direction:column;gap:14px}
.ych{display:flex;align-items:center;gap:16px;padding:18px 20px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:16px}
.ych-char{font-size:38px;font-weight:800;line-height:1;flex:0 0 auto;background:var(--grad-accent);-webkit-background-clip:text;background-clip:text;color:transparent}
.ych b{display:block;font-size:15px;color:#fff}
.ych small{color:#8FA0B8;font-size:13px}

/* ---- Contact ---- */
.contact-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:48px;box-shadow:var(--shadow)}
.contact-copy h2{font-size:clamp(26px,3.2vw,38px);margin:14px 0 12px}
.contact-copy p{color:var(--slate);margin-bottom:16px;font-size:16px}
.email-link{font-size:1.15rem;font-weight:800;color:var(--brand-blue-700)}
.email-link:hover{color:var(--brand-blue)}
.contact-form{display:grid;gap:15px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-field{display:grid;gap:7px}
.form-field label{color:var(--ink-3);font-size:13px;font-weight:700}
.contact-form input,.contact-form textarea,.contact-form select{width:100%;background:var(--bg-soft);border:1.5px solid var(--line);border-radius:11px;padding:13px 16px;color:var(--ink);font:inherit;font-size:15px;transition:border-color .2s ease,background .2s ease;resize:vertical}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:var(--slate-2)}
.contact-form input:focus,.contact-form textarea:focus,.contact-form select:focus{outline:none;border-color:var(--brand-blue);background:#fff;box-shadow:0 0 0 3px rgba(48,172,250,.12)}
.contact-form input.invalid,.contact-form textarea.invalid,.contact-form select.invalid{border-color:#DC2626;background:#FFF7F7}
.field-error{min-height:0;color:#B91C1C;font-size:12.5px;line-height:1.35;margin:0}
.field-error:not(:empty){min-height:17px}
.consent{display:flex;align-items:flex-start;gap:9px;font-weight:500!important;line-height:1.5;cursor:pointer}
.consent input{width:17px;height:17px;flex:0 0 auto;margin-top:2px;padding:0;accent-color:var(--brand-blue-700)}
.form-honeypot{position:absolute!important;width:1px!important;height:1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important}
.contact-form .btn{justify-self:start;margin-top:4px}
.contact-form .btn[disabled]{cursor:wait;opacity:.68;transform:none}
.form-note{display:none;border-radius:10px;padding:10px 14px;font-size:14px;font-weight:600}
.form-note.show{display:block}
.form-note.success{color:#1758B8;background:rgba(48,172,250,.1);border:1px solid rgba(48,172,250,.3)}
.form-note.error{color:#B91C1C;background:rgba(220,38,38,.08);border:1px solid rgba(220,38,38,.24)}

/* ---- Footer (ink) ---- */
.footer{background:var(--ink);color:#97A6BD;padding:70px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{color:#fff}
.footer-brand .brand .mark{width:32px;height:32px;color:var(--brand-blue)}
.footer-brand .brand-name{color:#fff}
.footer-slogan{color:var(--brand-accent-soft);font-weight:700;font-size:15px;margin:16px 0 10px}
.footer-mail{color:#97A6BD;font-size:14.5px}
.footer-mail:hover{color:var(--brand-blue)}
.footer-col h5{color:#fff;font-size:14px;letter-spacing:.04em;margin-bottom:16px;font-weight:700}
.footer-col a{display:block;color:#97A6BD;font-size:14.5px;padding:5px 0;transition:color .2s ease}
.footer-col a:hover{color:var(--brand-blue)}
.footer-bottom{margin-top:44px;padding-top:26px;border-top:1px solid rgba(255,255,255,.09);color:#97A6BD;font-size:13.5px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

/* ---- Reveal ---- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---- CTA band ---- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--radius-xl);background:var(--grad-hero);color:#fff;padding:64px;text-align:center;box-shadow:var(--shadow-lg)}
.cta-band::before{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:52px 52px;-webkit-mask-image:radial-gradient(700px 400px at 50% 0,#000,transparent 75%);mask-image:radial-gradient(700px 400px at 50% 0,#000,transparent 75%)}
.cta-band>*{position:relative;z-index:2}
.cta-band .eyebrow{color:var(--brand-accent-soft);justify-content:center;margin-bottom:14px}
.cta-band h2{font-size:clamp(26px,3.6vw,40px);color:#fff;margin-bottom:14px}
.cta-band p{color:#B8C7DD;max-width:620px;margin:0 auto 30px;font-size:17px}
.cta-band .hero-cta{justify-content:center}
.cta-band .btn-ghost{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.24);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.18);color:#fff}

/* ---- Mission / Vision ---- */
.mv-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:36px}
.mv{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);padding:30px}
.mv .m-ico{width:52px;height:52px;border-radius:14px;background:var(--grad-blue);color:#fff;display:grid;place-items:center;margin-bottom:16px}
.mv .m-ico svg{width:26px;height:26px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.mv h3{font-size:20px;color:#fff;margin-bottom:9px}
.mv p{color:#A7B4C8;font-size:15px;line-height:1.62}

/* ---- Values ---- */
.values{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:22px}
.value-item{padding:22px;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);background:rgba(255,255,255,.04)}
.value-item .vh{font-size:15px;font-weight:800;color:#fff;margin-bottom:6px}
.value-item p{color:#8FA0B8;font-size:13.5px;line-height:1.55}
@media(max-width:1024px){.mv-grid{grid-template-columns:1fr}.values{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.values{grid-template-columns:1fr}}
@media(max-width:640px){.form-row{grid-template-columns:1fr}}

/* ---- Responsive ---- */
@media(max-width:1024px){
  .cards-3,.cap-grid{grid-template-columns:repeat(2,1fr)}
  .products,.about-grid,.contact-inner{grid-template-columns:1fr}
  .shield-kpis{grid-template-columns:1fr 1fr}
  .tech-grid{grid-template-columns:1fr 1fr}
  .about-grid{gap:34px}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .flow{flex-direction:column}
  .flow-arrow{transform:rotate(90deg);justify-content:center}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;background:#fff;padding:14px;gap:4px;box-shadow:var(--shadow-lg);border-top:1px solid var(--line)}
  .nav-links.open{display:flex}
  .nav-links a{color:var(--ink);padding:13px 16px}
  .nav-links.open a:hover,.nav-links.open a.active{background:var(--bg-soft);color:var(--brand-blue-700)}
  .nav-toggle{display:grid;place-items:center}
  .cta-nav{display:none}
}
@media(max-width:760px){
  .pipeline-visual,.defense-flow{grid-template-columns:1fr}
  .pipeline-visual>div:not(:last-child)::after,.defense-flow>div::after{right:auto;left:28px;top:auto;bottom:-10px;width:2px;height:12px}
  .pipeline-visual small{white-space:normal}
  .defense-flow>div{min-height:112px}
  .shield-copy{padding:36px 28px}
}
@media(max-width:720px){
  .section{padding:64px 0}
  .cards-3,.cap-grid{grid-template-columns:1fr}
  .metrics-grid{grid-template-columns:1fr 1fr}
  .product-card{padding:28px}
  .contact-inner{padding:30px}
  .footer-grid{grid-template-columns:1fr}
}
@media(max-width:560px){
  .shield-kpis,.tech-grid{grid-template-columns:1fr}
  .shield-kpis>div{min-height:130px}
  .product-primary .product-body h3{font-size:23px}
}
@media(max-width:420px){.metrics-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}html{scroll-behavior:auto}}

/* ============================================================
   Editorial product narrative: black/white bands, restrained
   blue accents, large type and image-led technical storytelling.
   ============================================================ */
:root{
  --ink:#090B12;
  --ink-2:#10131D;
  --ink-3:#171B28;
  --bg-soft:#F2F3F5;
  --bg-soft-2:#E9EBEF;
  --line:#D9DCE2;
  --radius-sm:2px;
  --radius:4px;
  --radius-lg:6px;
  --radius-xl:8px;
  --shadow-sm:none;
  --shadow:none;
  --shadow-lg:none;
  --shadow-blue:none;
  --font:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",sans-serif;
}
body{font-size:16px;letter-spacing:0;background:#fff}
h1,h2,h3,h4{letter-spacing:0}
.container{max-width:1320px;padding-left:48px;padding-right:48px}
.section{padding:124px 0}
.section-head{max-width:none;margin:0 0 70px;text-align:left}
.section-head h2{max-width:920px;font-size:clamp(36px,5vw,66px);line-height:1.06;margin:14px 0 20px;font-weight:800}
.section-sub{max-width:760px;font-size:18px;line-height:1.7}
.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--brand-blue-700)}
.eyebrow::before{display:none}
.btn{border-radius:2px;padding:13px 22px;font-size:14px;box-shadow:none}
.btn-primary{background:#fff;color:#090B12;border-color:#fff;box-shadow:none}
.btn-primary:hover{background:var(--brand-blue);border-color:var(--brand-blue);color:#fff;transform:none;box-shadow:none}
.btn-ghost{border-color:#B8BDC7;border-radius:2px}
.text-link{display:inline-flex;align-items:center;gap:8px;color:#fff;font-size:14px;font-weight:700;border-bottom:1px solid rgba(255,255,255,.6);padding:10px 0 7px}
.text-link:hover{color:var(--brand-accent-soft);border-color:var(--brand-accent-soft)}

/* navigation */
#site-header{height:68px;background:#090B12;border-bottom:1px solid rgba(255,255,255,.1)}
#site-header .nav{height:68px}
.brand .mark{width:32px;height:32px;color:#fff}
.brand-name{font-size:17px}
.brand-name em{color:#AAB3C6;font-size:10px}
.nav-links{margin-left:auto;margin-right:18px}
.nav-links a{border-radius:0;padding:8px 13px;font-size:14px;color:#C7CBD3}
.nav-links a:hover,.nav-links a.active{background:transparent;color:#fff}
.nav-actions{margin-left:0}
.lang-toggle{border-radius:2px;background:transparent}
#site-header.scrolled{background:rgba(9,11,18,.96);border-color:rgba(255,255,255,.1);box-shadow:none}
#site-header.scrolled .brand-name{color:#fff}
#site-header.scrolled .brand-name em{color:#AAB3C6}
#site-header.scrolled .nav-links a{color:#C7CBD3}
#site-header.scrolled .nav-links a:hover,#site-header.scrolled .nav-links a.active{color:#fff;background:transparent}
#site-header.scrolled .lang-toggle,#site-header.scrolled .nav-toggle{color:#fff;border-color:rgba(255,255,255,.25);background:transparent}
.cta-nav{background:#fff!important;color:#090B12!important}

/* full-bleed hero */
.hero{min-height:100svh;padding-top:68px;background:#090B12;text-align:left;align-items:stretch;isolation:isolate}
.hero::before{content:"";position:absolute;z-index:2;inset:0;background:linear-gradient(90deg,rgba(5,8,15,.97) 0%,rgba(5,8,15,.88) 32%,rgba(5,8,15,.46) 62%,rgba(5,8,15,.18) 100%),linear-gradient(0deg,rgba(5,8,15,.72) 0%,transparent 42%),radial-gradient(circle at 76% 46%,rgba(48,172,250,.08),transparent 38%);mask-image:none;-webkit-mask-image:none}
.hero::after{content:"";position:absolute;z-index:5;left:0;right:0;bottom:0;height:1px;background:rgba(255,255,255,.12)}
.hero-inner{position:relative;z-index:4;max-width:1320px;width:100%;margin:auto;display:flex;align-items:flex-end;padding:clamp(140px,20vh,220px) 48px 9vh}
.hero-copy{max-width:760px}
.hero-kicker{font-size:12px;letter-spacing:.18em;color:#AAB3C6;margin-bottom:24px}
.hero-title{font-size:clamp(54px,8.2vw,112px);line-height:.94;color:#fff;margin:0 0 24px;font-weight:800}
.hero-sub{max-width:none;margin:0 0 36px;color:#F0F2F5;font-size:clamp(22px,2.4vw,34px);font-weight:600}
.hero-cta{justify-content:flex-start;align-items:center;gap:26px}
.hero-media{position:absolute;z-index:0;inset:68px 0 0;background:#07101d url("assets/hero-fiber-poster.jpg") center/cover no-repeat;overflow:hidden}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;opacity:0;filter:hue-rotate(178deg) saturate(.72) contrast(1.12) brightness(.58);transform:scale(1.025);transition:opacity 1.2s ease;will-change:opacity}
.hero-video.is-active{opacity:.88}
.hero-visual{position:absolute;z-index:3;right:-5vw;top:68px;width:min(70vw,1040px);height:calc(100% - 68px);opacity:.3;mix-blend-mode:screen;pointer-events:none}
.hero-visual svg{width:100%;height:100%;object-fit:cover}
.hero .reveal,.p-hero .reveal{opacity:1;transform:none;transition:none}

/* performance band */
.shield-spotlight{background:#fff;padding:118px 0 0}
.shield-spotlight .section-head{margin-bottom:64px}
.shield-stage{background:transparent;border-radius:0;border-top:1px solid #BFC3CA;border-bottom:1px solid #BFC3CA;color:var(--ink)}
.shield-kpis{grid-template-columns:repeat(4,1fr)}
.shield-kpis>div{min-height:240px;padding:36px 20px 34px 0;border:0;border-right:1px solid #D5D8DE;justify-content:space-between}
.shield-kpis>div:not(:first-child){padding-left:32px}
.shield-kpis>div:last-child{border-right:0}
.shield-kpis strong{color:var(--ink);font-size:clamp(34px,4vw,58px);font-weight:700;order:2}
.shield-kpis span{color:#656B77;font-size:14px;margin:0;order:1}

/* dark engineering narrative */
.technology-deep{background:#090B12;color:#fff;padding-top:150px}
.technology-deep .section-head h2{color:#fff}
.technology-deep .section-sub{color:#A8AFBC}
.technology-deep .eyebrow{color:var(--brand-accent-soft)}
.pipeline-visual{grid-template-columns:repeat(5,1fr);gap:0;padding:0;border:1px solid #343845;background:transparent;border-radius:0}
.pipeline-visual>div{padding:32px 24px;background:transparent;border:0;border-right:1px solid #343845;border-radius:0;min-height:168px}
.pipeline-visual>div:last-child{border-right:0}
.pipeline-visual>div:not(:last-child)::after{display:none}
.pipeline-visual span{color:var(--brand-accent-soft)}
.pipeline-visual b{color:#fff;font-size:21px;margin-top:30px}
.pipeline-visual small{color:#7E8798}
.tech-grid{gap:0;margin-top:72px;border-top:1px solid #343845}
.tech-item{padding:42px 40px 0 0;border:0;border-right:1px solid #343845;border-radius:0;background:transparent;min-height:290px}
.tech-item:not(:first-child){padding-left:40px}
.tech-item:last-child{border-right:0}
.tech-item>span{color:#fff;font-size:42px}
.tech-item h3{color:#fff;font-size:21px}
.tech-item p{color:#929AAA;line-height:1.7}

/* white defense section */
.defense-system{background:#fff}
.defense-flow{gap:0;margin:0;border-top:1px solid #C9CDD4;border-bottom:1px solid #C9CDD4}
.defense-flow>div{min-height:190px;padding:32px 24px;background:#fff;border:0;border-right:1px solid #D8DBE0;border-radius:0}
.defense-flow>div::after{display:none}
.defense-flow>div:last-child{border-right:0}
.defense-flow .clean{background:#111520}
.defense-cards{margin-top:70px;gap:1px;background:#D7DAE0;border:1px solid #D7DAE0}
.defense-cards .card{border:0;border-radius:0;padding:42px;background:#fff;box-shadow:none}
.card:hover,.cap:hover,.product-card:hover,.tile:hover{transform:none;box-shadow:none}
.card .ic{border-radius:2px;background:#111520;color:#fff}

/* product hierarchy */
#products{background:#F0F1F3}
.products{gap:1px;background:#C9CDD4;border:1px solid #C9CDD4}
.product-card{border:0;border-radius:0;padding:48px;background:#fff;box-shadow:none}
.product-card::after{display:none}
.product-primary{background:#0D1018;color:#fff;box-shadow:none}
.product-primary .product-body h3{color:#fff}
.product-primary .product-body h3 .mono,.product-primary .product-body>p,.product-primary .feat li,.product-primary .product-metrics{color:#AAB1BE}
.product-primary .btn-ghost{background:transparent;color:#fff;border:0;border-bottom:1px solid #fff;padding-left:0;padding-right:0}
.product-secondary{background:#fff}

/* evidence and architecture */
.evidence-section{background:#090B12!important;color:#fff}
.evidence-section .section-head h2{color:#fff}
.evidence-section .section-sub{color:#A8AFBC}
.evidence-section .eyebrow{color:var(--brand-accent-soft)}
.cap-grid{gap:0;border-top:1px solid #343845;border-left:1px solid #343845}
.cap{border:0;border-right:1px solid #343845;border-bottom:1px solid #343845;border-radius:0;padding:40px 32px;background:transparent}
.cap h3{color:#fff}
.cap p{color:#8D96A7}
.evidence-num{color:#fff;font-size:clamp(32px,3.8vw,52px)}
#architecture{background:#fff}
.flow{gap:0;border-top:1px solid #C9CDD4;border-bottom:1px solid #C9CDD4}
.flow-node{padding:40px 24px;background:#fff;border:0;border-right:1px solid #D8DBE0;border-radius:0;box-shadow:none}
.flow-node.accent{background:#111520}
.flow-arrow{display:none}

/* contact and footer */
#contact{background:#F0F1F3}
.contact-inner{align-items:start;gap:80px;background:transparent;border:0;border-radius:0;padding:0;box-shadow:none}
.contact-copy h2{font-size:clamp(42px,5vw,68px)}
.contact-form{border-top:1px solid #BFC3CA;padding-top:24px}
.contact-form input,.contact-form textarea,.contact-form select{background:#fff;border:1px solid #C9CDD4;border-radius:2px}
.footer{background:#090B12;padding-top:80px}
.cta-band{border-radius:0;background:#111520;box-shadow:none;padding:70px 48px;text-align:left}
.cta-band::before{display:none}
.cta-band .eyebrow{justify-content:flex-start;color:var(--brand-accent-soft)}
.cta-band p{max-width:700px;margin:0 0 30px;color:#AAB1BE}
.cta-band .hero-cta{justify-content:flex-start}
.cta-band .btn-ghost{border-radius:0;background:transparent;border:0;border-bottom:1px solid rgba(255,255,255,.65);padding-left:0;padding-right:0}

@media(max-width:1024px){
  .container{padding-left:30px;padding-right:30px}
  .hero-inner{padding-left:30px;padding-right:30px}
  .hero-visual{right:-34vw;width:115vw;opacity:.25}
  .products{grid-template-columns:1fr}
  .tech-grid{grid-template-columns:1fr}
  .tech-item,.tech-item:not(:first-child){padding:36px 0;border-right:0;border-bottom:1px solid #343845;min-height:0}
  .tech-item:last-child{border-bottom:0}
  .contact-inner{gap:50px}
}
@media(max-width:720px){
  .container{padding-left:20px;padding-right:20px}
  .section{padding:84px 0}
  .section-head{margin-bottom:44px}
  .section-head h2{font-size:36px}
  .hero{min-height:760px}
  .hero-inner{padding:150px 20px 72px}
  .hero-media{top:68px}.hero-video{object-position:62% center}
  .hero-visual{right:-78vw;width:185vw;opacity:.22}
  .hero-title{font-size:54px;max-width:330px}
  .hero-sub{font-size:22px;max-width:300px}
  .hero-cta{align-items:flex-start;flex-direction:column;gap:14px}
  .shield-spotlight{padding-top:82px}
  .shield-kpis{grid-template-columns:1fr 1fr}
  .shield-kpis>div,.shield-kpis>div:not(:first-child){min-height:170px;padding:24px 16px;border-bottom:1px solid #D5D8DE}
  .shield-kpis strong{font-size:31px}
  .pipeline-visual{grid-template-columns:1fr}
  .pipeline-visual>div{min-height:120px;border-right:0;border-bottom:1px solid #343845}
  .pipeline-visual>div:last-child{border-bottom:0}
  .pipeline-visual b{margin-top:14px}
  .defense-flow{grid-template-columns:1fr}
  .defense-flow>div{min-height:130px;border-right:0;border-bottom:1px solid #D8DBE0}
  .defense-cards{grid-template-columns:1fr}
  .product-card{padding:32px 24px}
  .cap-grid{grid-template-columns:1fr}
  .flow{flex-direction:column}
  .flow-node{border-right:0;border-bottom:1px solid #D8DBE0}
  .contact-inner{gap:42px}
  .cta-band{padding:48px 24px}
}
@media(prefers-reduced-motion:reduce){.hero-video{display:none}.hero-media{background-image:url("assets/hero-fiber-poster.jpg")}}