/* ==========================================================================
   缤诺晟官网（Premium · Light Blue）
   - 清爽浅蓝 + 高端质感（玻璃拟态/柔阴影/细线条）
   - 纯静态，无框架
   ========================================================================== */

:root{
  --bg0: #ffffff;
  --bg1: #f4f9ff;
  --bg2: #eaf5ff;
  --ink: #0b1220;
  --text: #0f172a;
  --muted: #546178;
  --line: rgba(15, 23, 42, .10);

  --primary: #2aa7ff;
  --primary2:#60d5ff;
  --accent: #6a7cff;

  --shadow: 0 18px 55px rgba(16, 24, 40, .12);
  --shadow2: 0 10px 30px rgba(16, 24, 40, .10);

  --radius: 22px;
  --radius-sm: 16px;
  --container: 1120px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"Noto Sans SC", system-ui, -apple-system, Segoe UI, Roboto, "PingFang SC", "Microsoft Yahei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1100px 520px at 20% -8%, rgba(42,167,255,.22), transparent 55%),
    radial-gradient(900px 480px at 90% 0%, rgba(96,213,255,.20), transparent 58%),
    radial-gradient(900px 600px at 70% 85%, rgba(106,124,255,.10), transparent 55%),
    linear-gradient(180deg, var(--bg1), var(--bg0) 55%);
  line-height:1.6;
}

a{color:inherit;text-decoration:none}
.container{max-width:var(--container); margin:0 auto; padding:0 20px}

.skip-link{
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  left:20px; top:20px; width:auto; height:auto;
  padding:10px 14px; border-radius:12px;
  background:#ffffff;
  border:1px solid var(--line);
  box-shadow: var(--shadow2);
  z-index:9999;
}

/* Header */
.header{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(14px);
  background: rgba(244, 249, 255, .72);
  border-bottom: 1px solid rgba(15,23,42,.08);
}
.header__inner{
  height:74px;
  display:flex; align-items:center; justify-content:space-between;
  gap:14px;
}
.brand{display:flex; align-items:center; gap:12px}
.brand__mark{
  width:44px; height:44px;
  border-radius:16px;
  display:grid; place-items:center;
  background: linear-gradient(135deg, rgba(42,167,255,1), rgba(96,213,255,1));
  box-shadow: 0 12px 28px rgba(42,167,255,.25);
}
.brand__mark-inner{
  color:white;
  font-weight:900;
  letter-spacing:.5px;
}
.brand__text{display:flex; flex-direction:column; line-height:1.1}
.brand__name{font-weight:900; letter-spacing:.4px}
.brand__sub{font-size:12px; color: var(--muted)}

.nav{display:flex; align-items:center; gap:18px}
.nav a{
  color: var(--muted);
  font-weight:700;
  font-size:14px;
  padding:10px 10px;
  border-radius:12px;
  transition: background .12s ease, color .12s ease;
}
.nav a:hover{color: var(--text); background: rgba(42,167,255,.10)}

.nav-toggle{
  display:none;
  width:46px; height:46px;
  border-radius:16px;
  border:1px solid rgba(15,23,42,.12);
  background: rgba(255,255,255,.70);
  box-shadow: var(--shadow2);
  cursor:pointer;
}
.nav-toggle span{
  display:block; width:20px; height:2px; margin:5px auto;
  background: rgba(15,23,42,.68);
  border-radius:999px;
}

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:10px;
  padding:12px 16px;
  border-radius:16px;
  border:1px solid rgba(15,23,42,.12);
  background: rgba(255,255,255,.75);
  color: var(--text);
  font-weight:800;
  box-shadow: var(--shadow2);
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.btn:hover{
  transform: translateY(-1px);
  box-shadow: 0 20px 55px rgba(16,24,40,.14);
}
.btn--primary{
  border:none;
  color:white;
  background: linear-gradient(135deg, rgba(42,167,255,1), rgba(96,213,255,1));
}
.btn--ghost{
  background: rgba(255,255,255,.55);
}
.btn--sm{padding:10px 12px; border-radius:14px; font-size:13px}

/* Hero */
.hero{
  position:relative;
  padding:74px 0 36px;
  overflow:hidden;
}
.hero__bg{position:absolute; inset:0; pointer-events:none}
.hero__pattern{
  position:absolute;
  inset:-80px -80px auto -80px;
  width: calc(100% + 160px);
  opacity:.55;
  filter: saturate(1.05);
}
.hero__glow{
  position:absolute;
  width:620px; height:620px;
  border-radius:999px;
  filter: blur(42px);
}
.hero__glow--a{
  left:-220px; top:-260px;
  background: radial-gradient(circle at 30% 30%, rgba(42,167,255,.30), transparent 62%);
}
.hero__glow--b{
  right:-220px; top:-220px;
  background: radial-gradient(circle at 55% 40%, rgba(96,213,255,.28), transparent 62%);
}

.hero__inner{
  position:relative;
  display:grid; grid-template-columns: 1.05fr .95fr;
  gap:26px;
  align-items:center;
}
.badge{
  display:inline-flex; align-items:center; gap:10px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.68);
  color: var(--muted);
  font-weight:700;
  font-size:13px;
  box-shadow: var(--shadow2);
}
.badge__dot{
  width:8px; height:8px; border-radius:99px;
  background: rgba(42,167,255,1);
  box-shadow: 0 0 0 6px rgba(42,167,255,.12);
}
.hero__title{
  margin:14px 0 0;
  font-size:46px;
  letter-spacing:-.6px;
  line-height:1.14;
}
.grad{
  background: linear-gradient(135deg, rgba(42,167,255,1), rgba(106,124,255,1));
  -webkit-background-clip: text;
  background-clip:text;
  color:transparent;
}
.hero__desc{
  margin:14px 0 18px;
  color: var(--muted);
  font-size:15.8px;
}
.hero__cta{display:flex; gap:12px; flex-wrap:wrap}
.hero__trust{
  margin-top:16px;
  display:flex; gap:10px; flex-wrap:wrap;
}
.chip{
  padding:8px 12px;
  border-radius:999px;
  border:1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.62);
  color: var(--muted);
  font-weight:700;
  font-size:12.5px;
}

/* Visual */
.device{
  border-radius: 26px;
  border: 1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.70);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.device__top{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 16px;
  border-bottom:1px solid rgba(15,23,42,.08);
  background: linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.65));
}
.dots{display:flex; gap:6px}
.dots span{
  width:9px; height:9px; border-radius:99px;
  background: rgba(15,23,42,.18);
}
.device__title{font-weight:900; color: rgba(15,23,42,.72); font-size:13px}
.device__pill{
  font-weight:900;
  font-size:12px;
  padding:6px 10px;
  border-radius:999px;
  background: rgba(42,167,255,.12);
  border:1px solid rgba(42,167,255,.25);
  color: rgba(5, 84, 145, .88);
}
.device__body{padding:16px 16px 18px; position:relative}
.kpis{
  display:grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap:10px;
}
.kpi{
  border-radius:18px;
  border:1px solid rgba(15,23,42,.10);
  background: rgba(244,249,255,.85);
  padding:12px 12px;
}
.kpi__label{color: var(--muted); font-weight:700; font-size:12px}
.kpi__value{margin-top:6px; font-weight:900}
.cards{
  margin-top:12px;
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap:10px;
}
.mini-card{
  border-radius:18px;
  border:1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.85);
  padding:14px;
  box-shadow: 0 10px 24px rgba(16,24,40,.08);
}
.mini-card__icon{font-size:18px}
.mini-card__t{margin-top:8px; font-weight:900}
.mini-card__d{margin-top:4px; color: var(--muted); font-size:12.5px}
.wave{
  position:absolute; left:-40px; right:-40px; bottom:-70px;
  height:170px;
  background: radial-gradient(circle at 20% 40%, rgba(42,167,255,.18), transparent 55%),
              radial-gradient(circle at 70% 35%, rgba(96,213,255,.16), transparent 55%);
  filter: blur(22px);
}

/* Sections */
.section{padding:60px 0}
.section--alt{
  background: linear-gradient(180deg, rgba(234,245,255,.70), rgba(255,255,255,0));
  border-top: 1px solid rgba(15,23,42,.06);
  border-bottom: 1px solid rgba(15,23,42,.06);
}
.section__head{margin-bottom:18px}
.section__title{margin:0; font-size:28px; letter-spacing:-.3px}
.section__desc{margin:8px 0 0; color: var(--muted)}

.grid{display:grid; gap:14px}
.grid--3{grid-template-columns: repeat(3, minmax(0,1fr))}

.card{
  padding:18px;
  border-radius: var(--radius);
  border:1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.78);
  box-shadow: var(--shadow2);
}
.card__icon{
  width:42px; height:42px;
  border-radius:16px;
  display:grid; place-items:center;
  background: rgba(42,167,255,.12);
  border:1px solid rgba(42,167,255,.22);
  font-size:18px;
}
.card h3{margin:12px 0 8px; font-size:17px}
.card p{margin:0 0 10px; color: var(--muted)}
.list{margin:0; padding-left:18px; color: var(--muted)}
.list li{margin:6px 0}

/* Strength */
.strength{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  gap:14px;
  align-items:stretch;
}
.feature{
  display:flex; gap:12px;
  padding:16px;
  border-radius: var(--radius);
  border:1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.80);
  box-shadow: var(--shadow2);
}
.feature__icon{
  width:42px; height:42px;
  border-radius:16px;
  display:grid; place-items:center;
  background: rgba(96,213,255,.18);
  border:1px solid rgba(96,213,255,.30);
  font-size:18px;
}
.feature h3{margin:0 0 6px; font-size:16px}
.feature p{margin:0; color: var(--muted)}

.scorecard{
  height:100%;
  border-radius: var(--radius);
  border:1px solid rgba(15,23,42,.10);
  background: linear-gradient(135deg, rgba(255,255,255,.86), rgba(234,245,255,.80));
  box-shadow: var(--shadow);
  padding:18px;
  position:relative;
  overflow:hidden;
}
.scorecard::before{
  content:"";
  position:absolute;
  inset:-40px -40px auto auto;
  width:260px; height:260px;
  border-radius:999px;
  background: radial-gradient(circle at 30% 30%, rgba(42,167,255,.22), transparent 60%);
  filter: blur(12px);
}
.scorecard__top{
  display:flex; align-items:center; justify-content:space-between;
  position:relative;
}
.scorecard__title{font-weight:900}
.scorecard__badge{
  font-weight:900;
  font-size:12px;
  padding:6px 10px;
  border-radius:999px;
  background: rgba(106,124,255,.12);
  border:1px solid rgba(106,124,255,.22);
  color: rgba(62, 73, 152, .92);
}
.meter{
  margin-top:12px;
  border-radius:18px;
  background: rgba(255,255,255,.70);
  border:1px solid rgba(15,23,42,.08);
  padding:12px;
  position:relative;
}
.meter__row{
  display:flex; justify-content:space-between; align-items:center;
  padding:8px 0;
  color: var(--muted);
  border-bottom:1px dashed rgba(15,23,42,.10);
}
.meter__row:last-child{border-bottom:none}
.pill2{
  font-weight:900;
  color: rgba(5,84,145,.9);
  padding:6px 10px;
  border-radius:999px;
  border:1px solid rgba(42,167,255,.20);
  background: rgba(42,167,255,.10);
}
.bars{
  margin-top:14px;
  display:flex; gap:10px; align-items:flex-end;
  height:74px;
  position:relative;
}
.bars span{
  width:18%;
  border-radius:14px;
  background: linear-gradient(180deg, rgba(42,167,255,.65), rgba(96,213,255,.35));
  box-shadow: 0 10px 22px rgba(42,167,255,.18);
}
.bars span:nth-child(1){height:38%}
.bars span:nth-child(2){height:62%}
.bars span:nth-child(3){height:78%}
.bars span:nth-child(4){height:54%}
.bars span:nth-child(5){height:70%}

/* Cases */
.cases{display:grid; gap:14px}
.case{
  display:grid; grid-template-columns: 1.2fr .8fr;
  gap:14px;
  padding:18px;
  border-radius: var(--radius);
  border:1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.78);
  box-shadow: var(--shadow2);
  overflow:hidden;
}
.case h3{margin:0 0 8px; font-size:18px}
.case p{margin:0 0 12px; color: var(--muted)}
.tags{display:flex; gap:8px; flex-wrap:wrap}
.tag{
  font-size:12px;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid rgba(15,23,42,.10);
  background: rgba(234,245,255,.85);
  color: var(--muted);
  font-weight:700;
}
.case__panel{
  border-radius:18px;
  border:1px solid rgba(15,23,42,.10);
  background: linear-gradient(135deg, rgba(42,167,255,.16), rgba(106,124,255,.10));
  display:grid; place-items:center;
  min-height:160px;
  position:relative;
}
.mini{
  width:min(240px, 100%);
  padding:14px;
  border-radius:18px;
  background: rgba(255,255,255,.72);
  border:1px solid rgba(15,23,42,.10);
}
.mini__row{display:flex; align-items:center; justify-content:space-between; color: var(--muted); margin:8px 0}
.mini__row span:last-child{color: var(--text); font-weight:900}
.spark{display:flex; gap:8px; align-items:flex-end}
.spark__bar{
  width:18px;
  height: 40px;
  border-radius:10px;
  background: rgba(15,23,42,.25);
  opacity:.25;
}
.spark__bar:nth-child(2){height:64px; opacity:.38}
.spark__bar:nth-child(3){height:52px; opacity:.30}
.spark__bar:nth-child(4){height:80px; opacity:.42}

.shield{width:140px; height:140px; position:relative}
.shield__ring{
  position:absolute; inset:0;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.60);
  background: rgba(255,255,255,.12);
}
.shield__ring--inner{inset:20px; border-color: rgba(255,255,255,.45)}
.shield__core{
  position:absolute; inset:44px;
  border-radius:999px;
  background: linear-gradient(135deg, rgba(42,167,255,1), rgba(106,124,255,1));
  opacity:.88;
  box-shadow: 0 18px 40px rgba(42,167,255,.22);
}

.note{
  margin-top:14px;
  padding:14px 16px;
  border-radius:18px;
  border:1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.70);
  color: var(--muted);
}

/* Steps */
.steps{display:grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap:14px}
.step{
  padding:18px;
  border-radius: var(--radius);
  border:1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.78);
  box-shadow: var(--shadow2);
}
.step__num{
  width:46px; height:46px;
  border-radius:16px;
  display:grid; place-items:center;
  font-weight:900;
  background: rgba(42,167,255,.12);
  border:1px solid rgba(42,167,255,.22);
  color: rgba(5,84,145,.92);
}
.step h3{margin:10px 0 8px; font-size:16px}
.step p{margin:0; color: var(--muted)}

/* Contact */
.cta{
  display:grid; grid-template-columns: 1fr 1.1fr;
  gap:14px;
  padding:22px;
  border-radius: 28px;
  border:1px solid rgba(15,23,42,.10);
  background: linear-gradient(135deg, rgba(255,255,255,.86), rgba(234,245,255,.82));
  box-shadow: var(--shadow);
}
.cta__text h2{margin:0 0 8px; font-size:26px}
.cta__text p{margin:0; color: var(--muted)}

.contact-cards{
  margin-top:14px;
  display:grid;
  grid-template-columns: 1fr;
  gap:10px;
}
.contact-card{
  padding:12px 14px;
  border-radius:18px;
  border:1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.70);
  box-shadow: 0 10px 22px rgba(16,24,40,.08);
}
.contact-card__k{color: var(--muted); font-weight:800; font-size:12px}
.contact-card__v{margin-top:4px; font-weight:900}

.form{
  padding:16px;
  border-radius:24px;
  background: rgba(255,255,255,.76);
  border:1px solid rgba(15,23,42,.10);
  box-shadow: 0 10px 24px rgba(16,24,40,.08);
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap:12px;
}
label{display:flex; flex-direction:column; gap:6px; font-weight:800; font-size:12px; color: var(--muted)}
input, textarea{
  font: inherit;
  padding:12px 12px;
  border-radius:16px;
  border:1px solid rgba(15,23,42,.12);
  background: rgba(244,249,255,.85);
  color: var(--text);
  outline:none;
}
input:focus, textarea:focus{
  border-color: rgba(42,167,255,.55);
  box-shadow: 0 0 0 6px rgba(42,167,255,.14);
}
.form__full{grid-column:1 / -1}
.form__hint{
  grid-column:1 / -1;
  margin:0;
  font-size:12px;
  color: var(--muted);
}
code{
  padding:2px 6px;
  border-radius:10px;
  border:1px solid rgba(15,23,42,.10);
  background: rgba(255,255,255,.80);
}

/* Footer */
.footer{
  padding:26px 0 40px;
  border-top:1px solid rgba(15,23,42,.08);
  background: rgba(244,249,255,.85);
}
.footer__inner{display:flex; align-items:center; justify-content:space-between; gap:14px}
.footer__brand{display:flex; align-items:center; gap:12px}
.footer__mark{
  width:34px; height:34px;
  border-radius:12px;
  display:grid; place-items:center;
  background: linear-gradient(135deg, rgba(42,167,255,1), rgba(96,213,255,1));
  color:white;
  font-weight:900;
}
.footer__name{font-weight:900}
.footer__meta{color: var(--muted); font-size:12px; margin-top:2px}
.footer__links{display:flex; align-items:center; gap:10px; flex-wrap:wrap}
.footer__link{color: var(--muted); font-weight:800; font-size:13px}
.footer__link:hover{color: var(--text)}
.sep{color:rgba(15,23,42,.28)}

/* Responsive */
@media (max-width: 980px){
  .hero__inner{grid-template-columns: 1fr; }
  .hero__visual{order:-1}
  .grid--3{grid-template-columns: repeat(2, minmax(0,1fr))}
  .cases .case{grid-template-columns: 1fr}
  .steps{grid-template-columns: repeat(2, minmax(0,1fr))}
  .cta{grid-template-columns: 1fr}
  .strength{grid-template-columns:1fr}
}
@media (max-width: 640px){
  .nav{display:none}
  .nav-toggle{display:inline-block}
  .nav.is-open{
    display:flex;
    position:absolute;
    top:74px; right:16px; left:16px;
    flex-direction:column;
    padding:14px;
    border-radius:20px;
    border:1px solid rgba(15,23,42,.12);
    background: rgba(255,255,255,.92);
    box-shadow: var(--shadow);
  }
  .hero{padding-top:46px}
  .hero__title{font-size:34px}
  .grid--3{grid-template-columns: 1fr}
  .steps{grid-template-columns:1fr}
  .footer__inner{flex-direction:column; align-items:flex-start}
}