/* ===== 谦寻云官网 ===== */
:root{
  --orange:#FF8812; --orange-d:#F0690A; --orange-l:#FFAF4D;
  --blue:#3C6CFF; --purple:#8A5CFF;
  --grad:linear-gradient(90deg,#3C6CFF,#8A5CFF);
  --grad-orange:linear-gradient(135deg,#FFAF4D 0%,#FF8812 45%,#F0690A 80%,#D95C06 100%);
  --text:#1D2129; --text2:#4E5769; --text3:#86909C;
  --line:#E5E6EB; --bg:#F7F8FC; --card:#fff;
  --shadow:0 12px 40px rgba(29,33,41,.10);
  --radius:16px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.6;overflow-x:hidden}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14px;font-weight:600;border-radius:10px;padding:10px 22px;transition:.2s;cursor:pointer;border:none;white-space:nowrap}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 4px 14px rgba(60,108,255,.30)}
.btn--primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 8px 22px rgba(60,108,255,.38)}
.btn--ghost{background:#FFF3E8;color:var(--orange-d)}
.btn--ghost:hover{background:#FFE8D2}
.btn--white{background:#fff;color:var(--orange-d)}
.btn--white:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(0,0,0,.18)}
.btn--outline-white{background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.btn--outline-white:hover{background:rgba(255,255,255,.22)}
.btn--lg{padding:14px 30px;font-size:15px;border-radius:12px}

/* ===== 导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:.25s}
.nav.scrolled{border-bottom-color:var(--line);box-shadow:0 4px 20px rgba(29,33,41,.06)}
.nav__in{display:flex;align-items:center;gap:32px;height:66px}
.nav__brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav__logo{width:36px;height:36px}
.nav__name{font-size:18px;font-weight:800;line-height:1.1;display:flex;flex-direction:column}
.nav__name em{font-style:normal;font-size:10px;font-weight:600;letter-spacing:2px;color:var(--orange)}
.nav__links{display:flex;gap:26px;margin-left:auto}
.nav__links a{font-size:14px;color:var(--text2);font-weight:500;position:relative;padding:4px 0;transition:.2s}
.nav__links a:hover,.nav__links a.active{color:var(--orange-d)}
.nav__links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2.5px;border-radius:2px;background:linear-gradient(90deg,var(--orange-l),var(--orange-d))}
.nav__actions{display:flex;gap:10px}
.nav__burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav__burger span{width:22px;height:2.5px;background:var(--text);border-radius:2px;transition:.25s}

/* ===== Hero ===== */
.hero{position:relative;padding:150px 0 0;overflow:hidden}
.hero__bg{position:absolute;inset:0;background:var(--grad-orange)}
.hero__bg::before{content:"";position:absolute;inset:0;background:
  radial-gradient(circle at 15% 20%,rgba(255,255,255,.28),transparent 42%),
  radial-gradient(circle at 85% 75%,rgba(191,95,0,.35),transparent 45%),
  radial-gradient(circle at 55% 108%,rgba(255,255,255,.16),transparent 50%)}
.hero__in{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:48px;align-items:center}
.hero__badge{display:inline-block;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);color:#fff;font-size:13px;font-weight:600;padding:6px 16px;border-radius:999px;margin-bottom:22px;letter-spacing:.5px}
.hero h1{color:#fff;font-size:44px;line-height:1.25;font-weight:800;letter-spacing:.5px}
.hero h1 span{font-size:26px;font-weight:700;opacity:.95}
.hero__sub{color:rgba(255,255,255,.88);font-size:16px;margin:20px 0 30px;line-height:1.8}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap}
.hero__demo{margin-top:18px;color:rgba(255,255,255,.75);font-size:12.5px}
.hero__visual{position:relative}
.browser{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 30px 80px rgba(120,50,0,.45);transform:perspective(1200px) rotateY(-4deg);transition:.4s}
.browser:hover{transform:perspective(1200px) rotateY(0deg) scale(1.01)}
.browser__bar{display:flex;align-items:center;gap:6px;background:#F2F3F7;padding:9px 14px}
.browser__bar i{width:10px;height:10px;border-radius:50%;background:#DDD}
.browser__bar i:nth-child(1){background:#FF5F57}.browser__bar i:nth-child(2){background:#FEBC2E}.browser__bar i:nth-child(3){background:#28C840}
.browser__bar span{margin-left:10px;font-size:11.5px;color:var(--text3);background:#fff;border-radius:6px;padding:2px 12px}
.browser img{width:100%}
.hero__stats{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:56px;padding-bottom:56px}
.hstat{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);border-radius:var(--radius);padding:20px 24px;color:#fff;backdrop-filter:blur(6px)}
.hstat b{display:block;font-size:32px;font-weight:800;font-family:"DIN Alternate",Arial,sans-serif;letter-spacing:-.5px}
.hstat span{font-size:13px;opacity:.85}

/* ===== 平台覆盖 ===== */
.plats{border-bottom:1px solid var(--line);background:#fff}
.plats__in{display:flex;align-items:center;gap:30px;padding:22px 24px;flex-wrap:wrap}
.plats__lab{font-size:13px;color:var(--text3);font-weight:600;letter-spacing:1px;flex-shrink:0}
.plats__list{display:flex;gap:12px;flex-wrap:wrap}
.plat{font-style:normal;font-size:13.5px;font-weight:700;color:var(--pc,#333);background:#fff;border:1.5px solid var(--line);border-radius:10px;padding:7px 18px;transition:.2s}
.plat:hover{border-color:currentColor;transform:translateY(-2px);box-shadow:0 6px 16px rgba(29,33,41,.08)}

/* ===== 通用区块 ===== */
.sec{padding:96px 0}
.sec--gray{background:var(--bg)}
.sec__head{text-align:center;max-width:640px;margin:0 auto 56px}
.sec__tag{display:inline-block;font-size:13px;font-weight:700;color:var(--orange-d);background:#FFF3E8;padding:5px 16px;border-radius:999px;margin-bottom:16px;letter-spacing:1px}
.sec__head h2{font-size:34px;font-weight:800;line-height:1.35}
.sec__head p{color:var(--text2);margin-top:14px;font-size:15px}
.sec__head--light h2{color:#fff}
.sec__head--light p{color:rgba(255,255,255,.75)}
.sec__head--light .sec__tag{background:rgba(255,255,255,.14);color:#FFD8AE}

/* ===== 功能卡 ===== */
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;transition:.25s;position:relative;overflow:hidden}
.feat::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--fc,#3C6CFF);opacity:0;transition:.25s}
.feat:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.feat:hover::before{opacity:1}
.feat__ico{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:24px;background:color-mix(in srgb,var(--fc,#3C6CFF) 10%,#fff);margin-bottom:18px}
.feat h3{font-size:18px;font-weight:700;margin-bottom:10px}
.feat p{font-size:13.5px;color:var(--text2);line-height:1.75}
.feat__chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.feat__chips span{font-size:11.5px;font-weight:600;color:var(--fc,#3C6CFF);background:color-mix(in srgb,var(--fc,#3C6CFF) 8%,#fff);border-radius:6px;padding:3px 10px}

/* ===== 截图墙 ===== */
.shots{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.shotcard{transition:.25s}
.shotcard:hover{transform:translateY(-5px)}
.browser--sm{border-radius:12px;box-shadow:0 14px 40px rgba(29,33,41,.14);transform:none;border:1px solid var(--line)}
.shotcard figcaption{margin-top:14px;font-size:13.5px;color:var(--text2);text-align:center}
.shotcard figcaption b{display:block;font-size:15px;color:var(--text);margin-bottom:2px}

/* ===== 客户案例 ===== */
.case{background:linear-gradient(160deg,#191D3A 0%,#232850 55%,#2A2560 100%);padding:96px 0;position:relative;overflow:hidden}
.case::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 10%,rgba(138,92,255,.25),transparent 45%),radial-gradient(circle at 10% 90%,rgba(255,136,18,.12),transparent 40%)}
.case .wrap{position:relative}
.case__banner{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;background:var(--grad);border-radius:var(--radius);padding:26px 30px;margin-bottom:40px;box-shadow:0 20px 50px rgba(60,108,255,.35)}
.cb-item{text-align:center;color:#fff}
.cb-item b{display:block;font-size:30px;font-weight:800;font-family:"DIN Alternate",Arial,sans-serif}
.cb-item span{font-size:12.5px;opacity:.85}
.case__grid{display:grid;grid-template-columns:1.1fr 1fr;gap:36px}
.case__story h3,.case__metrics h3{color:#fff;font-size:20px;margin-bottom:20px}
.case__steps{list-style:none;display:flex;flex-direction:column;gap:18px}
.case__steps li{display:flex;gap:16px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);border-radius:14px;padding:18px 20px;transition:.25s}
.case__steps li:hover{background:rgba(255,255,255,.10);transform:translateX(4px)}
.case__steps i{font-style:normal;font-size:20px;font-weight:800;background:linear-gradient(180deg,var(--orange-l),var(--orange-d));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;flex-shrink:0}
.case__steps b{color:#fff;display:block;margin-bottom:4px;font-size:15px}
.case__steps div{color:rgba(255,255,255,.72);font-size:13px;line-height:1.7}
.cmetrics{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.cmetric{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:20px}
.cmetric b{display:block;color:#FFB25E;font-size:28px;font-weight:800;font-family:"DIN Alternate",Arial,sans-serif}
.cmetric span{color:#fff;font-size:13px;font-weight:600}
.cmetric em{display:block;font-style:normal;color:rgba(255,255,255,.55);font-size:11.5px;font-weight:400;margin-top:4px}
.case__note{margin-top:16px;color:rgba(255,255,255,.45);font-size:11.5px}

/* ===== 服务价值 ===== */
.values{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.value{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:.25s;position:relative}
.value::after{content:"";position:absolute;left:24px;right:24px;bottom:0;height:3px;border-radius:3px;background:var(--grad-orange);transform:scaleX(0);transition:.3s;transform-origin:left}
.value:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.value:hover::after{transform:scaleX(1)}
.value b{font-size:17px;font-weight:700;display:block;margin-bottom:10px}
.value p{font-size:13px;color:var(--text2);line-height:1.75}

/* ===== CTA ===== */
.cta{background:var(--grad-orange);position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 85% 20%,rgba(255,255,255,.22),transparent 45%)}
.cta__in{position:relative;display:grid;grid-template-columns:1fr 1.2fr;gap:44px;align-items:center;padding:72px 24px}
.cta__text h2{color:#fff;font-size:32px;font-weight:800}
.cta__text p{color:rgba(255,255,255,.85);margin-top:10px;font-size:15px}
.cta__cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.cta__card{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);border-radius:14px;padding:20px 22px;color:#fff;transition:.25s}
.cta__card:hover{background:rgba(255,255,255,.24);transform:translateY(-3px)}
.cta__card span{font-size:12px;opacity:.8;display:block;margin-bottom:6px}
.cta__card b{font-size:20px;font-weight:800;font-family:"DIN Alternate",Arial,sans-serif;letter-spacing:.5px}
.cta__card--solid{grid-column:1/-1;background:#fff;color:var(--orange-d);text-align:center}
.cta__card--solid:hover{background:#FFF3E8}
.cta__card--solid b{font-size:17px}

/* ===== 页脚 ===== */
.footer{background:#14172B;color:#B7BCD4}
.footer__in{display:flex;align-items:flex-start;gap:40px;padding:44px 24px;flex-wrap:wrap}
.footer__brand{display:flex;align-items:center;gap:12px;margin-right:auto}
.footer__brand img{width:40px;height:40px;filter:brightness(1.15)}
.footer__brand b{display:block;color:#fff;font-size:15px}
.footer__brand span{font-size:12px;color:#7E85A6}
.footer__links{display:flex;gap:22px;align-items:center}
.footer__links a{font-size:13px;transition:.2s}
.footer__links a:hover{color:#FFB25E}
.footer__contact{display:flex;flex-direction:column;gap:4px;font-size:12.5px;text-align:right}
.footer__bar{border-top:1px solid rgba(255,255,255,.08);padding:16px 0;font-size:12px;color:#7E85A6}
.footer__bar .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.footer__bar a:hover{color:#FFB25E}

/* ===== 关于我们 ===== */
.abouts{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:22px}
.about{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.about__head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.about__head b{font-size:18px;font-weight:800}
.about__head span{font-size:12px;font-weight:600;color:var(--orange-d);background:#FFF3E8;border-radius:6px;padding:3px 10px}
.about p{font-size:13.5px;color:var(--text2);line-height:1.8;margin-bottom:14px}
.about__kv{display:flex;justify-content:space-between;gap:12px;font-size:12.5px;padding:7px 0;border-top:1px dashed var(--line)}
.about__kv span{color:var(--text3)}
.about__kv b{font-weight:600}
.ipr{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px}
.ipr__title{font-size:15px;font-weight:700;margin-bottom:16px}
.ipr__list{display:flex;flex-wrap:wrap;gap:10px}
.ipr__list span{font-size:12.5px;color:var(--text2);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:6px 14px;transition:.2s}
.ipr__list span:hover{color:var(--orange-d);border-color:#FFD9B0;background:#FFF8F1}
.ipr__list span.hl{color:var(--orange-d);border-color:#FFB25E;background:#FFF3E8;font-weight:700}

/* ===== FAQ ===== */
.faqs{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s}
.faq[open]{border-color:#FFD9B0;box-shadow:0 8px 24px rgba(240,105,10,.08)}
.faq summary{cursor:pointer;list-style:none;padding:20px 24px;font-size:16px;font-weight:700;display:flex;align-items:center;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;font-weight:400;color:var(--orange);flex-shrink:0;transition:.25s}
.faq[open] summary::after{transform:rotate(45deg)}
.faq__a{padding:0 24px 22px;font-size:14px;color:var(--text2);line-height:1.85}
.faq__a strong{color:var(--orange-d)}

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

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .hero__in{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:36px}
  .hero h1 span{font-size:22px}
  .feats{grid-template-columns:repeat(2,1fr)}
  .values{grid-template-columns:repeat(2,1fr)}
  .case__banner{grid-template-columns:repeat(3,1fr);row-gap:22px}
  .case__grid{grid-template-columns:1fr}
  .cta__in{grid-template-columns:1fr;gap:28px}
}
@media (max-width:640px){
  .nav__links,.nav__actions{display:none}
  .abouts{grid-template-columns:1fr}
  .nav__burger{display:flex}
  .nav__links.open{display:flex;position:absolute;top:66px;left:0;right:0;flex-direction:column;background:#fff;padding:18px 24px;gap:16px;border-bottom:1px solid var(--line);box-shadow:0 16px 30px rgba(29,33,41,.10)}
  .hero{padding-top:110px}
  .hero h1{font-size:30px}
  .hero h1 span{font-size:19px}
  .hero__stats{grid-template-columns:repeat(2,1fr);gap:12px}
  .hstat b{font-size:24px}
  .feats{grid-template-columns:1fr}
  .shots{grid-template-columns:1fr}
  .values{grid-template-columns:1fr}
  .case__banner{grid-template-columns:repeat(2,1fr)}
  .cmetrics{grid-template-columns:1fr}
  .sec{padding:64px 0}
  .sec__head h2{font-size:26px}
  .footer__contact{text-align:left}
}