/* ==========================================================
   玉晗网络 www.0556yh.com  —  官网样式表
   设计基调：深空蓝 + 科技青 + 香槟金，大留白、细描边、强对比
   ========================================================== */

:root{
  --ink:#0b1225;          /* 主深色 */
  --ink-2:#111a35;        /* 次级深色 */
  --ink-3:#182346;        /* 卡片深色 */
  --line:rgba(255,255,255,.10);
  --text:#e8ecf7;         /* 深色底文字 */
  --text-dim:#9aa6c4;
  --white:#ffffff;
  --paper:#f6f8fc;        /* 浅色区块 */
  --gray-1:#2a3350;
  --gray-2:#5a6484;
  --gray-3:#8d97b4;
  --cyan:#2ee6c5;
  --blue:#4d7cff;
  --gold:#e3b872;
  --grad:linear-gradient(120deg,#2ee6c5 0%,#4d7cff 60%,#7b5cff 100%);
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 6px 20px rgba(11,18,37,.06);
  --shadow:0 18px 50px rgba(11,18,37,.12);
  --shadow-lg:0 30px 80px rgba(11,18,37,.18);
  --header-h:78px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--gray-1);background:#fff;
  line-height:1.75;font-size:16px;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:.25s}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em}
p{margin:0}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:15px}
code{background:rgba(77,124,255,.1);color:var(--blue);padding:1px 6px;border-radius:5px;font-size:13px}
.ico{width:16px;height:16px;fill:currentColor;flex:none}

.wrap{width:min(1200px,92vw);margin-inline:auto}
.wrap--narrow{width:min(880px,92vw)}

/* ---------- 通用：区块 / 标题 ---------- */
.section{padding:104px 0;position:relative}
.section--gray{background:var(--paper)}
.section--dark{background:var(--ink);color:var(--text)}
.section--dark .sec-head__title,.section--dark h3{color:#fff}

.sec-head{max-width:760px;margin:0 auto 56px;text-align:center}
.sec-head__tag{
  display:inline-block;font-size:12px;letter-spacing:.22em;font-weight:700;
  color:var(--blue);background:rgba(77,124,255,.09);
  padding:6px 14px;border-radius:50px;margin-bottom:18px;
}
.section--dark .sec-head__tag{color:var(--cyan);background:rgba(46,230,197,.1)}
.sec-head__title{font-size:clamp(26px,3.4vw,40px);color:var(--ink);margin-bottom:16px}
.sec-head__desc{color:var(--gray-2);font-size:16.5px}
.section--dark .sec-head__desc{color:var(--text-dim)}

.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 30px;border-radius:50px;font-weight:700;font-size:15.5px;
  transition:.3s cubic-bezier(.2,.7,.3,1);white-space:nowrap;border:1px solid transparent;
}
.btn--sm{height:40px;padding:0 20px;font-size:14px}
.btn--lg{height:58px;padding:0 36px;font-size:16.5px}
.btn--block{width:100%}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 12px 30px rgba(77,124,255,.32)}
.btn--primary:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(77,124,255,.42)}
.btn--ghost{border-color:rgba(255,255,255,.35);color:#fff;backdrop-filter:blur(6px);background:rgba(255,255,255,.06)}
.btn--ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-3px)}
.btn .ico{width:18px;height:18px}

/* ---------- 滚动进度条 ---------- */
.scroll-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:200;background:transparent}
.scroll-progress i{display:block;height:100%;width:0;background:var(--grad);transition:width .1s linear}

/* ==========================================================
   头部
   ========================================================== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:150;transition:.35s}
.site-header.is-stuck{background:rgba(9,15,32,.86);backdrop-filter:blur(16px);box-shadow:0 10px 30px rgba(0,0,0,.28)}
.site-header.is-hidden{transform:translateY(-100%)}

.top-bar{background:rgba(9,15,32,.55);border-bottom:1px solid rgba(255,255,255,.07);color:#c8d2ea;font-size:13px;transition:.35s}
.site-header.is-stuck .top-bar{display:none}
.top-bar__inner{display:flex;justify-content:space-between;align-items:center;height:38px;gap:16px}
.top-bar__slogan{display:flex;align-items:center;gap:8px;margin:0}
.top-bar__slogan .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(46,230,197,.18);animation:pulse 2s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 8px rgba(46,230,197,0)}}
.top-bar__contact{display:flex;align-items:center;gap:10px}
.top-bar__contact a{display:inline-flex;align-items:center;gap:6px;color:#fff;font-weight:600}
.top-bar__contact a:hover{color:var(--cyan)}
.top-bar__contact .sep{opacity:.3}

.nav-bar{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:20px}

.logo{display:flex;align-items:center;gap:12px}
.logo__img{
  height:46px;width:auto;object-fit:contain;flex:none;
  filter:drop-shadow(0 0 6px rgba(56,225,196,.5)) drop-shadow(0 2px 8px rgba(0,0,0,.4));
  animation:logoGlow 3.2s ease-in-out infinite;
}
.logo--footer .logo__img{height:36px;}
@keyframes logoGlow{
  0%,100%{filter:drop-shadow(0 0 5px rgba(56,225,196,.35)) drop-shadow(0 2px 8px rgba(0,0,0,.4));transform:translateY(0)}
  50%{filter:drop-shadow(0 0 16px rgba(56,225,196,.9)) drop-shadow(0 2px 12px rgba(0,0,0,.55));transform:translateY(-2px)}
}
@media (prefers-reduced-motion: reduce){
  .logo__img{animation:none}
}
.logo__mark{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--grad);color:#fff;font-weight:800;font-size:17px;letter-spacing:.5px;
  box-shadow:0 8px 22px rgba(77,124,255,.4);flex:none;
}
.logo__text{display:flex;flex-direction:column;line-height:1.25}
.logo__text b{font-size:19px;color:#fff;letter-spacing:2px}
.logo__text i{font-style:normal;font-size:10.5px;letter-spacing:.14em;color:var(--text-dim)}

.nav{display:flex;gap:2px}
.nav__link{
  position:relative;padding:10px 12px;font-size:14.5px;color:#d5dcee;border-radius:8px;
  white-space:nowrap;
}
.nav__link::after{
  content:"";position:absolute;left:50%;bottom:4px;transform:translateX(-50%);
  width:0;height:2px;border-radius:2px;background:var(--grad);transition:.3s;
}
.nav__link:hover,.nav__link.is-active{color:#fff}
.nav__link:hover::after,.nav__link.is-active::after{width:18px}

.nav-actions{display:flex;align-items:center;gap:10px}
.nav-tel{display:inline-flex;align-items:center;gap:5px;color:#fff;font-weight:700;font-size:14px;letter-spacing:.3px}
.nav-tel:hover{color:var(--cyan)}

.menu-toggle{display:none;width:42px;height:42px;border-radius:10px;position:relative;background:rgba(255,255,255,.08)}
.menu-toggle span{position:absolute;left:11px;width:20px;height:2px;background:#fff;border-radius:2px;transition:.3s}
.menu-toggle span:nth-child(1){top:14px}
.menu-toggle span:nth-child(2){top:20px}
.menu-toggle span:nth-child(3){top:26px}
.menu-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ==========================================================
   首屏 Hero
   ========================================================== */
.hero{
  position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;
  padding:calc(var(--header-h) + 90px) 0 150px;color:#fff;overflow:hidden;background:var(--ink);
}
.hero__media{position:absolute;inset:0;z-index:0}
.hero__video{width:100%;height:100%;object-fit:cover;opacity:.55}
.hero__canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.85}
.hero__mask{
  position:absolute;inset:0;
  background:
    radial-gradient(900px 520px at 18% 25%,rgba(46,230,197,.16),transparent 60%),
    radial-gradient(800px 600px at 82% 70%,rgba(77,124,255,.24),transparent 62%),
    linear-gradient(180deg,rgba(7,11,25,.72) 0%,rgba(7,11,25,.62) 45%,rgba(7,11,25,.94) 100%);
}
.hero__grid{
  position:absolute;inset:0;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.35) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 50% 40%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 20%,transparent 78%);
}
.hero__inner{position:relative;z-index:2;max-width:900px}

.hero__eyebrow{display:flex;align-items:center;gap:12px;font-size:12.5px;letter-spacing:.24em;color:#a9b6d6;margin-bottom:26px;font-weight:600}
.tag-line{width:44px;height:1px;background:linear-gradient(90deg,var(--cyan),transparent)}
.hero__title{font-size:clamp(34px,6vw,68px);line-height:1.16;margin-bottom:26px;letter-spacing:-.02em}
.hero__desc{font-size:clamp(15px,1.3vw,18px);color:#c3cde6;max-width:660px;margin-bottom:38px}
.hero__desc strong{color:#fff;font-weight:600}
.hero__btns{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:34px}
.hero__tags{display:flex;flex-wrap:wrap;gap:10px}
.hero__tags li{
  padding:7px 16px;border-radius:50px;font-size:13.5px;color:#cfd9f0;
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);backdrop-filter:blur(4px);
}

.hero__stats{position:absolute;left:0;right:0;bottom:0;z-index:3;background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));border-top:1px solid rgba(255,255,255,.12);backdrop-filter:blur(10px)}
.hero__stats-inner{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:24px 10px;text-align:center;position:relative}
.stat+.stat::before{content:"";position:absolute;left:0;top:24%;height:52%;width:1px;background:rgba(255,255,255,.13)}
.stat b{display:block;font-size:clamp(26px,3vw,38px);font-weight:800;color:#fff;line-height:1.1}
.stat b i{font-style:normal;font-size:.55em;margin-left:2px;color:var(--cyan)}
.stat span{font-size:13.5px;color:#a9b6d6}

.scroll-tip{
  position:absolute;left:50%;bottom:96px;transform:translateX(-50%);z-index:4;
  display:flex;flex-direction:column;align-items:center;gap:8px;font-size:11.5px;letter-spacing:.2em;color:#9fb0d6;
}
.scroll-tip span{width:22px;height:36px;border:1px solid rgba(255,255,255,.35);border-radius:14px;position:relative}
.scroll-tip span::after{content:"";position:absolute;left:50%;top:7px;width:3px;height:7px;border-radius:2px;background:var(--cyan);transform:translateX(-50%);animation:wheel 1.6s infinite}
@keyframes wheel{0%{opacity:0;transform:translate(-50%,0)}40%{opacity:1}100%{opacity:0;transform:translate(-50%,12px)}}

/* ==========================================================
   服务卡片
   ========================================================== */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.service-card{
  position:relative;background:#fff;border:1px solid #e8ecf6;border-radius:var(--radius);
  padding:34px 30px 30px;box-shadow:var(--shadow-sm);transition:.4s cubic-bezier(.2,.7,.3,1);overflow:hidden;
}
.service-card::before{
  content:"";position:absolute;inset:0;background:var(--grad);opacity:0;transition:.4s;
}
.service-card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:transparent}
.service-card:hover::before{opacity:.045}
.service-card>*{position:relative}
.service-card__icon{
  width:58px;height:58px;border-radius:15px;display:grid;place-items:center;margin-bottom:22px;
  background:linear-gradient(140deg,rgba(46,230,197,.14),rgba(77,124,255,.14));color:var(--blue);
}
.service-card__icon svg{width:30px;height:30px}
.service-card h3{font-size:20px;color:var(--ink);margin-bottom:12px}
.service-card p{color:var(--gray-2);font-size:15px;min-height:76px}
.service-card__tags{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 20px}
.service-card__tags li{font-size:12.5px;color:var(--blue);background:rgba(77,124,255,.08);padding:4px 11px;border-radius:6px}
.service-card__more{font-size:14px;font-weight:700;color:var(--ink)}
.service-card__more:hover{color:var(--blue)}
.service-card__badge{position:absolute;top:18px;right:18px;background:var(--gold);color:#3a2a09;font-size:11.5px;font-weight:800;padding:4px 10px;border-radius:6px}

/* ==========================================================
   核心优势
   ========================================================== */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.09);border-radius:var(--radius);overflow:hidden}
.adv-item{background:var(--ink-2);padding:38px 32px;transition:.35s;position:relative}
.adv-item:hover{background:var(--ink-3)}
.adv-item__no{font-size:14px;font-weight:800;letter-spacing:.1em;color:var(--cyan);opacity:.85}
.adv-item h3{font-size:19px;margin:12px 0 12px;color:#fff}
.adv-item p{color:var(--text-dim);font-size:14.8px}

/* ==========================================================
   服务流程
   ========================================================== */
.process{display:grid;grid-template-columns:repeat(5,1fr);gap:22px;position:relative;margin-bottom:52px}
.process::before{content:"";position:absolute;left:8%;right:8%;top:22px;height:1px;background:linear-gradient(90deg,transparent,#e2e8f5 12%,#e2e8f5 88%,transparent)}
.process__item{position:relative;text-align:center;padding-top:0}
.process__dot{
  display:block;width:44px;height:44px;margin:0 auto 20px;border-radius:50%;
  background:#fff;border:2px solid #dbe3f4;position:relative;z-index:2;transition:.3s;
}
.process__dot::after{content:"";position:absolute;inset:8px;border-radius:50%;background:var(--grad);opacity:.18;transition:.3s}
.process__item:hover .process__dot{border-color:transparent;box-shadow:0 8px 22px rgba(77,124,255,.28)}
.process__item:hover .process__dot::after{opacity:1}
.process__item h3{font-size:17.5px;color:var(--ink);margin-bottom:10px}
.process__item p{font-size:14px;color:var(--gray-2)}
.process__cta{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:linear-gradient(120deg,#0d1730,#182a5c);border-radius:var(--radius);padding:34px 40px;color:#fff;
}
.process__cta p{font-size:19px;font-weight:600}

/* ==========================================================
   案例
   ========================================================== */
.case-filter{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-bottom:40px}
.case-filter__btn{
  padding:10px 22px;border-radius:50px;font-size:14.5px;font-weight:600;color:var(--gray-2);
  background:#fff;border:1px solid #e4e9f4;transition:.25s;
}
.case-filter__btn:hover{color:var(--blue);border-color:rgba(77,124,255,.4)}
.case-filter__btn.is-active{background:var(--ink);color:#fff;border-color:var(--ink);box-shadow:var(--shadow-sm)}

.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.case-card{
  background:#fff;border:1px solid #e8ecf6;border-radius:var(--radius);overflow:hidden;
  transition:.4s cubic-bezier(.2,.7,.3,1);box-shadow:var(--shadow-sm);
}
.case-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:transparent}
.case-card.is-hide{display:none}
.case-card__shot{position:relative;aspect-ratio:16/10;overflow:hidden;background:#0d1428}
.case-card__shot .shot{width:100%;height:100%;display:block;transition:transform .6s cubic-bezier(.2,.7,.3,1)}
.case-card:hover .case-card__shot .shot{transform:scale(1.06)}
.case-card__badge{
  position:absolute;left:16px;top:16px;z-index:2;font-size:11.5px;font-weight:700;color:#fff;letter-spacing:.06em;
  padding:5px 12px;border-radius:50px;background:rgba(11,18,37,.42);border:1px solid rgba(255,255,255,.3);
  backdrop-filter:blur(6px);
}
.case-card__info{padding:24px 24px 26px}
.case-card__info h3{font-size:18px;color:var(--ink);margin-bottom:10px}
.case-card__info p{font-size:14.5px;color:var(--gray-2);min-height:72px}
.case-card__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.case-card__tags li{font-size:12px;color:var(--gray-2);background:var(--paper);border:1px solid #e8ecf6;padding:4px 10px;border-radius:6px}

/* ---------- 行业资讯 ---------- */
.section--news{background:#fff}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid #e8ecf6;border-radius:var(--radius);
  overflow:hidden;transition:.4s cubic-bezier(.2,.7,.3,1);box-shadow:var(--shadow-sm);
}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.news-card__thumb{
  position:relative;height:118px;display:grid;place-items:center;overflow:hidden;
  background:linear-gradient(135deg,var(--c1,#364fc7),var(--c2,#748ffc));
}
.news-card__thumb span{
  position:relative;z-index:2;font-size:13.5px;font-weight:800;letter-spacing:.08em;color:#fff;
  padding:6px 14px;border-radius:50px;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.32);
}
.news-card__thumb::after{content:"";position:absolute;inset:0;background:radial-gradient(420px 130px at 18% 130%,rgba(255,255,255,.28),transparent 62%)}
.news-card__body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.news-card__meta{display:flex;gap:14px;font-size:12.5px;color:var(--gray-3);margin-bottom:10px}
.news-card__body h3{
  font-size:17px;color:var(--ink);margin-bottom:10px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__excerpt{
  font-size:14px;color:var(--gray-2);flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__more{margin-top:16px;font-size:14px;font-weight:700;color:var(--blue)}
.news-card:hover .news-card__more{color:var(--ink)}
.sec-more{text-align:center;margin-top:46px}
.btn--outline{border-color:#dbe3f4;color:var(--ink);background:#fff}
.btn--outline:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-3px)}
.cases__note{margin-top:34px;text-align:center;font-size:13.5px;color:var(--gray-3)}

/* ==========================================================
   客户评价
   ========================================================== */
.section--testi{
  background:
    radial-gradient(700px 400px at 20% 0%,rgba(46,230,197,.12),transparent 60%),
    radial-gradient(700px 400px at 85% 100%,rgba(77,124,255,.16),transparent 60%),
    var(--ink);
}
.testi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.testi{
  margin:0;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius);padding:28px 26px;transition:.35s;
}
.testi:hover{background:rgba(255,255,255,.075);transform:translateY(-6px)}
.testi__stars{color:var(--gold);font-size:15px;letter-spacing:2px;margin-bottom:14px}
.testi blockquote{margin:0 0 20px;font-size:15px;color:#d3dcee;line-height:1.8}
.testi figcaption b{display:block;color:#fff;font-size:15px}
.testi figcaption span{font-size:13px;color:var(--gray-3)}

/* ==========================================================
   常见问题
   ========================================================== */
.faq{border-top:1px solid #e8ecf6}
.faq__item{border-bottom:1px solid #e8ecf6}
.faq__q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:18px;
  padding:22px 4px;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);transition:.25s;
}
.faq__q:hover{color:var(--blue)}
.faq__icon{position:relative;width:18px;height:18px;flex:none}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;background:var(--blue);border-radius:2px;transition:.3s}
.faq__icon::before{left:0;top:8px;width:18px;height:2px}
.faq__icon::after{left:8px;top:0;width:2px;height:18px}
.faq__item.is-open .faq__icon::after{transform:rotate(90deg);opacity:0}
.faq__item.is-open .faq__q{color:var(--blue)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq__a p{padding:0 4px 22px;color:var(--gray-2);font-size:15px}

/* ==========================================================
   联系我们
   ========================================================== */
.section--contact{background:linear-gradient(180deg,#fff 0%,var(--paper) 100%)}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start}
.contact__title{font-size:clamp(24px,2.8vw,34px);color:var(--ink);margin-bottom:16px}
.contact__desc{color:var(--gray-2);margin-bottom:30px}
.contact__list{display:grid;gap:16px;margin-bottom:28px}
.contact__list li{display:flex;gap:14px;align-items:flex-start}
.ci-ico{
  width:42px;height:42px;flex:none;border-radius:12px;display:grid;place-items:center;font-size:18px;
  background:linear-gradient(140deg,rgba(46,230,197,.14),rgba(77,124,255,.14));
}
.contact__list b{display:block;font-size:14px;color:var(--gray-2);font-weight:600}
.contact__list a,.contact__list span:not(.ci-ico){font-size:17px;font-weight:700;color:var(--ink)}
.contact__list a:hover{color:var(--blue)}
.contact__qr{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.qr-box{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid #e8ecf6;border-radius:var(--radius);padding:14px 20px 14px 14px;box-shadow:var(--shadow-sm)}
.qr-box__img{
  width:96px;height:96px;border-radius:10px;flex:none;
  background:
    repeating-conic-gradient(from 0deg,#0b1225 0deg 90deg,#fff 90deg 180deg) 0 0/16px 16px;
  position:relative;
}
.qr-box__img::after{content:"";position:absolute;inset:34%;background:#fff;border-radius:4px;box-shadow:0 0 0 3px #0b1225}
.qr-box p{font-size:13.5px;color:var(--gray-2);line-height:1.6}
.contact__tip{font-size:12.5px;color:var(--gray-3)}

.contact__form{
  background:#fff;border:1px solid #e8ecf6;border-radius:20px;padding:36px 34px;box-shadow:var(--shadow);
}
.contact__form h3{font-size:20px;color:var(--ink);margin-bottom:24px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:block;margin-bottom:16px}
.field>span{display:block;font-size:13.5px;color:var(--gray-2);margin-bottom:7px;font-weight:600}
.field>span i{color:#e5484d;font-style:normal}
.field input,.field select,.field textarea{
  width:100%;padding:13px 15px;border:1px solid #e2e8f5;border-radius:10px;background:#fbfcfe;
  color:var(--ink);transition:.25s;outline:none;
}
.field textarea{resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);background:#fff;box-shadow:0 0 0 4px rgba(77,124,255,.12)}
.field input.is-error,.field textarea.is-error{border-color:#e5484d;background:#fff5f5}
.form-note{margin-top:14px;font-size:12.8px;color:var(--gray-3);text-align:center}
.form-note.is-ok{color:#0f8a5f;font-weight:600}
.form-note.is-err{color:#e5484d;font-weight:600}

/* ==========================================================
   页脚
   ========================================================== */
.site-footer{background:var(--ink);color:var(--text-dim);padding-top:66px}
.footer{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px}
.footer__brand p{font-size:14.5px;line-height:1.9;margin:20px 0 18px;max-width:380px}
.footer__contact{font-size:14.5px;line-height:2}
.footer__contact a{color:#fff;font-weight:600}
.footer__contact a:hover{color:var(--cyan)}
.footer__nav h4{color:#fff;font-size:16px;margin-bottom:18px}
.footer__nav ul{display:grid;gap:11px}
.footer__nav a,.footer__nav li{font-size:14.2px}
.footer__nav a:hover{color:var(--cyan);padding-left:4px}
.footer__words{display:flex;flex-wrap:wrap;gap:8px}
.footer__words li{font-size:12.5px;padding:5px 11px;border:1px solid rgba(255,255,255,.12);border-radius:6px;background:rgba(255,255,255,.03)}
.footer__bottom{border-top:1px solid rgba(255,255,255,.09)}
.footer__bottom-inner{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding:22px 0;font-size:13.2px}
.footer__bottom a{color:var(--text-dim)}
.footer__bottom a:hover{color:var(--cyan)}

/* ==========================================================
   悬浮工具 / 移动端底栏
   ========================================================== */
.float-tools{position:fixed;right:18px;bottom:96px;z-index:120;display:grid;gap:10px}
.float-tool{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;font-size:19px;
  background:rgba(11,18,37,.9);color:#fff;box-shadow:0 10px 26px rgba(11,18,37,.28);
  border:1px solid rgba(255,255,255,.12);transition:.3s;position:relative;
}
.float-tool:hover{background:var(--grad);transform:translateY(-3px)}
.float-tool[data-tip]::after{
  content:attr(data-tip);position:absolute;right:58px;top:50%;transform:translateY(-50%) translateX(6px);
  background:rgba(11,18,37,.95);color:#fff;font-size:12.5px;padding:6px 11px;border-radius:7px;
  white-space:nowrap;opacity:0;pointer-events:none;transition:.25s;
}
.float-tool:hover::after{opacity:1;transform:translateY(-50%)}
.mobile-bar{display:none}

/* ==========================================================
   入场动画
   ========================================================== */
[data-anim]{opacity:0;transform:translateY(28px);transition:opacity .8s cubic-bezier(.2,.7,.3,1),transform .8s cubic-bezier(.2,.7,.3,1)}
[data-anim="fade-up"].is-in{opacity:1;transform:none}


/* ==========================================================
   GEO 优化新增：关键事实卡 + 服务区域
   ========================================================== */
.facts{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:44px;
}
.fact-card{
  position:relative;background:#fff;border:1px solid #e8ecf6;border-radius:var(--radius);
  padding:26px 24px 24px;box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .3s, box-shadow .3s, border-color .3s;
}
.fact-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad);
}
.fact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d9e2f7}
.fact-card__k{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--blue);background:rgba(77,124,255,.08);border-radius:999px;
  padding:4px 12px;margin-bottom:12px;
}
.fact-card__v{
  margin:0;font-size:15px;line-height:1.85;color:var(--gray-1);
}

/* 服务区域 */
.areas{display:grid;grid-template-columns:1fr;gap:20px;margin-top:44px}
.area-group{
  background:var(--paper);border:1px solid #e8ecf6;border-radius:var(--radius);
  padding:26px 28px;transition:border-color .3s, box-shadow .3s;
}
.area-group:hover{border-color:#cfd9f2;box-shadow:var(--shadow-sm)}
.area-group--main{
  background:linear-gradient(120deg,#0b1225 0%,#16234a 100%);
  border-color:transparent;
}
.area-group__h{
  margin:0 0 14px;font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em;
}
.area-group--main .area-group__h{color:#fff}
.area-tags{display:flex;flex-wrap:wrap;gap:9px}
.area-tags span{
  display:inline-block;font-size:14px;color:var(--gray-1);background:#fff;
  border:1px solid #e2e8f5;border-radius:8px;padding:6px 14px;transition:.25s;
}
.area-tags span:hover{border-color:var(--cyan);color:var(--blue)}
.area-group--main .area-tags span{
  background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.14);color:#e8ecf7;
}
.area-group--main .area-tags span:hover{border-color:var(--cyan);color:var(--cyan)}
.area-group__note{
  margin:14px 0 0;font-size:14px;color:var(--gray-3);line-height:1.8;
}
.area-group--main .area-group__note{color:rgba(232,236,247,.62)}

@media (prefers-reduced-motion:reduce){
  [data-anim]{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ==========================================================
   响应式
   ========================================================== */
@media (max-width:1080px){
  .nav{display:none}
  .nav-tel{display:none}
  .menu-toggle{display:block}
  .site-header.is-open .nav{
    display:flex;flex-direction:column;gap:2px;position:absolute;top:100%;left:0;right:0;
    background:rgba(9,15,32,.98);backdrop-filter:blur(16px);padding:14px 4vw 22px;
    border-top:1px solid rgba(255,255,255,.08);box-shadow:0 20px 40px rgba(0,0,0,.4);
  }
  .site-header.is-open .nav__link{padding:14px 4px;font-size:16px;border-bottom:1px solid rgba(255,255,255,.06)}
  .service-grid,.case-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .facts{grid-template-columns:repeat(2,1fr)}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .testi-grid{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(3,1fr);gap:30px 22px}
  .process::before{display:none}
  .footer{grid-template-columns:1fr 1fr;gap:36px}
}

@media (max-width:768px){
  body{font-size:15.5px}
  .section{padding:70px 0}
  .top-bar{display:none}
  .hero{min-height:auto;padding:120px 0 0}
  .hero__stats{position:static;margin-top:56px}
  .hero__stats-inner{grid-template-columns:repeat(2,1fr)}
  .stat+.stat::before{display:none}
  .stat{border-top:1px solid rgba(255,255,255,.1)}
  .scroll-tip{display:none}
  .hero__btns .btn{width:100%}
  .service-grid,.case-grid,.adv-grid,.testi-grid,.news-grid{grid-template-columns:1fr}
  .facts{grid-template-columns:1fr;gap:14px}
  .fact-card{padding:22px 20px}
  .area-group{padding:22px 20px}
  .process{grid-template-columns:1fr 1fr}
  .process__cta{padding:26px 24px;flex-direction:column;align-items:flex-start}
  .contact{grid-template-columns:1fr;gap:36px}
  .field-row{grid-template-columns:1fr}
  .footer{grid-template-columns:1fr}
  .float-tools{right:12px;bottom:78px}
  .float-tool{width:44px;height:44px;font-size:17px}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:130;
    background:rgba(255,255,255,.97);backdrop-filter:blur(12px);border-top:1px solid #e8ecf6;
    padding:10px 14px calc(10px + env(safe-area-inset-bottom));gap:10px;
    box-shadow:0 -6px 24px rgba(11,18,37,.1);
  }
  .mobile-bar__btn{
    flex:1;height:46px;display:grid;place-items:center;border-radius:12px;font-weight:700;font-size:15px;
    border:1px solid #e2e8f5;color:var(--ink);
  }
  .mobile-bar__btn--primary{background:var(--grad);color:#fff;border-color:transparent}
  body{padding-bottom:72px}
}

@media (max-width:480px){
  .hero__title{font-size:30px}
  .logo__text i{display:none}
  .nav-actions .btn{display:none}
}

/* 隐私政策同意勾选 */
.field--check{display:flex;align-items:flex-start;gap:8px;font-size:13px;color:#9aa6c2;line-height:1.6;margin:6px 0 2px}
.field--check input{margin-top:3px;flex:none;width:16px;height:16px}
.field--check a{color:#38e1c4;text-decoration:underline}