/* 英特之星 Intestar 官网 —— 公共样式 */
:root{
  --ink:#0E1E26; --navy:#12343F; --teal:#1D5363; --teal-2:#2B6E80; --gold:#E3A33B; --gold-2:#F6D9A3;
  --bg:#F5F7F6; --card:#fff; --line:#E3E8E7; --text:#1B2A30; --muted:#5B6C72;
  --ids:#1D5363; --seal:#B3261E; --cards:#5B3FA8; --snow:#F26B1D;
  --r:18px; --shadow:0 10px 30px rgba(14,30,38,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Noto Sans CJK SC",sans-serif;color:var(--text);background:var(--bg);line-height:1.7;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--teal);text-decoration:none}
a:hover{color:var(--teal-2)}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.eyebrow{font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);font-weight:700}
h1,h2,h3{color:var(--ink);line-height:1.3;margin:0}
h2{font-size:34px;font-weight:800;margin:8px 0 14px}
.lead{color:var(--muted);font-size:17px;max-width:720px}
section{padding:88px 0}
.center{text-align:center}.center .lead{margin:0 auto}

/* 顶部导航 */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;height:68px;gap:28px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:19px;white-space:nowrap}
.brand img{width:36px;height:36px}
.brand small{display:block;font-size:10px;letter-spacing:.24em;color:var(--muted);font-weight:600;line-height:1}
.brand span{line-height:1.15}
.menu{display:flex;gap:26px;margin-left:auto;align-items:center}
.menu a{color:var(--text);font-size:15px}
.menu a:hover,.menu a.on{color:var(--teal)}
.menu .btn{padding:8px 18px;font-size:14px}
.burger{display:none;margin-left:auto;background:none;border:0;font-size:26px;color:var(--ink);cursor:pointer;padding:6px}

.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;border:2px solid transparent;transition:.2s;cursor:pointer}
.btn.primary{background:var(--gold);color:var(--ink)}
.btn.primary:hover{background:#EEB453;color:var(--ink)}
.btn.dark{background:var(--navy);color:#fff}
.btn.dark:hover{background:var(--teal);color:#fff}
.btn.ghost{border-color:rgba(255,255,255,.4);color:#fff}
.btn.ghost:hover{border-color:#fff;color:#fff}
.btn.line{border-color:var(--line);color:var(--ink);background:#fff}
.btn.line:hover{border-color:var(--teal);color:var(--teal)}

/* 首页大图 */
.hero{background:radial-gradient(1000px 500px at 85% -10%,#24596A 0%,transparent 60%),linear-gradient(160deg,var(--navy) 0%,var(--ink) 100%);color:#fff;padding:96px 0 110px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-90px;top:-90px;width:420px;height:420px;background:url(logo-star.svg) no-repeat center/contain;opacity:.05}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;position:relative;z-index:1}
.hero h1{color:#fff;font-size:52px;font-weight:800;letter-spacing:.01em}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero p{color:#C8D7DB;font-size:18px;margin:20px 0 32px;max-width:560px}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap}
.stats{display:flex;gap:40px;margin-top:48px;flex-wrap:wrap}
.stats b{display:block;font-size:30px;color:#fff;font-weight:800;line-height:1.2}
.stats span{font-size:13px;color:#9FB6BC}
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.tile{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--r);padding:22px;color:#fff;transition:.25s;display:block}
.tile:hover{background:rgba(255,255,255,.11);transform:translateY(-3px);color:#fff}
.tile i{display:flex;width:46px;height:46px;border-radius:12px;align-items:center;justify-content:center;margin-bottom:14px}
.tile i svg{width:26px;height:26px}
.tile b{display:block;font-size:17px}
.tile span{font-size:13px;color:#A9C0C5}

/* 产品卡片 */
.products{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:44px}
.pcard{background:var(--card);border-radius:22px;border:1px solid var(--line);overflow:hidden;display:flex;flex-direction:column;transition:.25s}
.pcard:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.pcard .vis{aspect-ratio:520/220;position:relative;overflow:hidden;display:flex;align-items:flex-end;justify-content:center}
.pcard .vis svg{width:100%;height:100%;display:block}
.phero .vis svg{width:100%;height:auto;display:block;border-radius:14px}
.pcard .body{padding:26px 28px 28px;display:flex;flex-direction:column;flex:1}
.pcard .tag{display:inline-block;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;margin-bottom:10px;align-self:flex-start}
.pcard h3{font-size:23px;font-weight:800}
.pcard p{color:var(--muted);margin:8px 0 16px}
.spec{list-style:none;padding:0;margin:0 0 22px;border-top:1px solid var(--line)}
.spec li{display:flex;padding:9px 0;border-bottom:1px solid var(--line);font-size:14px}
.spec li span{width:84px;color:var(--muted);flex:none}
.pcard .more{margin-top:auto;font-weight:700}

/* 通用卡片网格 */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:40px}
.box{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px}
.box h3{font-size:19px;margin:12px 0 8px}
.box p{color:var(--muted);margin:0;font-size:15px}
.box .num{font-size:13px;font-weight:800;color:var(--gold);letter-spacing:.1em}
.ico{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:#EAF1F2;color:var(--teal)}
.ico svg{width:24px;height:24px}

.dark-band{background:linear-gradient(160deg,var(--navy),var(--ink));color:#fff}
.dark-band h2{color:#fff}.dark-band .lead{color:#B9CBD0}
.clients{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;justify-content:center}
.clients span{border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:9px 18px;font-size:15px;color:#E5EEF0;letter-spacing:.02em}

.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.quote{font-size:21px;line-height:1.75;color:var(--ink);border-left:4px solid var(--gold);padding-left:22px;margin:22px 0}

/* 联系 */
.contact{display:grid;grid-template-columns:1.2fr 1fr;gap:28px;align-items:stretch}
.contact .box{display:flex;flex-direction:column;justify-content:center}
.contact dl{margin:0;display:grid;grid-template-columns:72px 1fr;gap:12px 10px;font-size:16px}
.contact dt{color:var(--muted)}
.contact dd{margin:0;font-weight:600;color:var(--ink)}

/* 产品详情页 */
.phero{padding:84px 0 72px;color:#fff;position:relative;overflow:hidden}
.phero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.phero h1{color:#fff;font-size:44px;font-weight:800}
.phero p{color:rgba(255,255,255,.82);font-size:18px;margin:18px 0 28px}
.phero .crumbs{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:14px}
.phero .crumbs a{color:rgba(255,255,255,.8)}
.phero .actions{display:flex;gap:12px;flex-wrap:wrap}
.phero .vis{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:24px;padding:18px}
.phero.ids{background:linear-gradient(150deg,#12343F,#0B1F27)}
.phero.seal{background:linear-gradient(150deg,#5E1612,#2A0B09)}
.phero.cards{background:linear-gradient(150deg,#3B2876,#1A1238)}
.phero.about{background:linear-gradient(150deg,#12343F,#0B1F27);padding-bottom:64px}
.phero.about .wrap{grid-template-columns:1fr}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.chips span{background:rgba(255,255,255,.12);border-radius:999px;padding:4px 12px;font-size:13px;color:#fff}

.steps{counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px}
.steps .box{position:relative;padding-top:56px}
.steps .box::before{counter-increment:s;content:counter(s);position:absolute;top:22px;left:28px;width:26px;height:26px;border-radius:50%;background:var(--navy);color:#fff;font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center}
.list{margin:12px 0 0;padding-left:20px;color:var(--muted)}
.list li{margin:4px 0}
details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 22px;margin-top:12px}
details summary{cursor:pointer;font-weight:700;color:var(--ink)}
details p,details ol,details ul{color:var(--muted);font-size:15px}
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:36px}
.cases div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 20px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:10px}
.cases div::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--gold);flex:none}
.note{background:#FFF8EA;border:1px solid #F1DDB0;border-radius:14px;padding:16px 20px;color:#6B5320;font-size:14px;margin-top:22px}

.timeline{position:relative;margin-top:36px;padding-left:28px;border-left:2px solid var(--line)}
.timeline div{position:relative;margin-bottom:26px}
.timeline div::before{content:"";position:absolute;left:-36px;top:7px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--gold)}
.timeline b{color:var(--ink);font-size:18px}
.timeline p{margin:4px 0 0;color:var(--muted)}

footer{background:var(--ink);color:#9FB2B8;padding:56px 0 30px;font-size:14px}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
footer h4{color:#fff;margin:0 0 12px;font-size:15px}
footer a{color:#C9D7DA;display:block;margin:6px 0}
footer a:hover{color:#fff}
footer .brand{color:#fff;margin-bottom:12px}
footer .brand small{color:#7F969D}
footer .copy{border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

@media (max-width:900px){
  section{padding:64px 0}
  h2{font-size:27px}
  .menu{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .menu.open{display:flex}
  .menu a{padding:12px 0;border-bottom:1px solid var(--line)}
  .menu .btn{margin-top:12px;justify-content:center;border-bottom:0}
  .burger{display:block}
  .hero{padding:64px 0 72px}
  .hero .wrap,.phero .wrap,.split,.contact{grid-template-columns:1fr}
  .hero h1{font-size:36px}
  .phero h1{font-size:32px}
  .products,.grid3,.grid2,.steps{grid-template-columns:1fr}
  .cases{grid-template-columns:1fr 1fr}
  .stats{gap:24px}
  footer .cols{grid-template-columns:1fr}
}
@media (max-width:520px){.cases{grid-template-columns:1fr}.tiles{grid-template-columns:1fr 1fr;gap:10px}.tile{padding:16px}}

/* ---------- 雪迹传说为主的首页 ---------- */
.btn.snow{background:var(--snow);color:#fff}
.btn.snow:hover{background:#FF8240;color:#fff}
.shero{background:radial-gradient(900px 480px at 80% 10%,#1B4F8F 0%,transparent 65%),linear-gradient(160deg,#13233A 0%,#0A1424 100%);color:#fff;padding:72px 0 0;overflow:hidden}
.shero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:end}
.shero .wrap>div:first-child{padding-bottom:80px}
.shero h1{color:#fff;font-size:56px;font-weight:800}
.shero h1 em{font-style:normal;color:var(--snow)}
.shero p{color:#C6D3E6;font-size:18px;margin:20px 0 30px;max-width:540px}
.shero .actions,.dl .actions{display:flex;gap:14px;flex-wrap:wrap}
.ver{font-size:13px!important;color:#8FA3BF!important;margin:14px 0 0!important}
.phones{position:relative;height:520px}
.phones img{position:absolute;bottom:0;width:250px;border-radius:30px 30px 0 0;border:7px solid #05101D;border-bottom:0;box-shadow:0 20px 60px rgba(0,0,0,.45)}
.phones .p1{left:6%;bottom:-40px;transform:rotate(-6deg);opacity:.92}
.phones .p2{right:6%;height:500px;object-fit:cover;object-position:top}
.phones.single{height:auto;display:flex;justify-content:center}
.phones.single img{position:static;width:280px;height:auto;border-radius:30px;border-bottom:7px solid #05101D}
.emo{font-size:30px;line-height:1;display:block}
.g4 .box{display:block}
.shots{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px}
.shots img{border-radius:22px;border:6px solid #0A1424;height:460px;width:100%;object-fit:cover;object-position:top}
.sband{background:linear-gradient(160deg,#13233A,#0A1424);color:#fff}
.tfs{display:grid;grid-template-columns:1fr 1fr;gap:22px 26px;margin-top:30px}
.tf{display:flex;gap:12px}
.tf .emo{font-size:24px;margin-top:2px}
.tf b{color:#fff;font-size:16px}
.tf p{margin:4px 0 0;color:#A9BAD0;font-size:14px}
.dl{background:linear-gradient(140deg,#13233A,#1B4F8F 120%);border-radius:28px;padding:48px;display:grid;grid-template-columns:1.2fr 1fr;gap:36px;color:#fff}
.dlside{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:20px;padding:26px}
.dlside b{color:#fff}
.dlside p{color:#C6D3E6;font-size:14px;margin:6px 0 18px}
.minis{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:36px}
.mini{display:flex;gap:14px;align-items:flex-start;border:1px solid var(--line);border-radius:18px;padding:20px;color:inherit;background:#fff;transition:.2s}
.mini:hover{box-shadow:var(--shadow);transform:translateY(-2px);color:inherit}
.mini i{flex:none;width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center}
.mini i svg{width:22px;height:22px}
.mini b{display:block;color:var(--ink);font-size:16px}
.mini span{display:block;color:var(--muted);font-size:13px;line-height:1.6;margin-top:4px}
.mini em{font-style:normal;color:var(--muted);margin-left:auto}
@media (max-width:900px){
  .shero .wrap,.dl{grid-template-columns:1fr}
  .shero h1{font-size:40px}
  .shero .wrap>div:first-child{padding-bottom:0}
  .phones{height:380px}
  .phones img{width:180px}
  .phones .p2{height:360px}
  .shots{grid-template-columns:1fr 1fr}
  .shots img{height:340px}
  .shots img:nth-child(3){display:none}
  .tfs,.minis{grid-template-columns:1fr}
  .dl{padding:30px 22px}
}
.qr{display:flex;align-items:center;gap:14px;margin-top:6px}
.qr img{width:104px;height:104px;border-radius:10px;background:#fff;padding:6px}
.qr span{font-size:13px;color:#C6D3E6;line-height:1.6}
.qr.dark{margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.qr.dark img{border:1px solid var(--line)}
.qr.dark span{color:var(--muted)}