/* ==========================================================
   大境咨询企业官网 · 淡蓝色主题
   主色：品牌蓝 #1467A8 / 深蓝 #0E4E86
   辅色：品牌橙 #F08A1D
   背景：淡蓝 #EAF4FB / #F4FAFD
   ========================================================== */
:root{
  --blue:#1467A8;
  --blue-deep:#0E4E86;
  --blue-dark:#0A3A64;
  --blue-soft:#4E97CB;
  --orange:#F08A1D;
  --orange-deep:#D97706;
  --bg:#EAF4FB;
  --bg-soft:#F4FAFD;
  --card:#FFFFFF;
  --ink:#1E3A52;
  --ink-2:#41637F;
  --ink-3:#7292AB;
  --line:#CFE4F3;
  --shadow:0 10px 30px rgba(20,103,168,.10);
  --shadow-lg:0 18px 50px rgba(14,78,134,.16);
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{width:min(1240px,96%);margin:0 auto}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s;
}
.site-header.scrolled{box-shadow:0 6px 24px rgba(20,103,168,.12)}
.header-inner{display:flex;align-items:center;gap:22px;height:72px}
.brand{display:flex;align-items:center;gap:10px;margin-right:auto}
.brand-logo{height:46px;width:auto}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:20px;color:var(--blue-deep);letter-spacing:2px}
.brand-text em{font-style:normal;font-size:10px;color:var(--ink-3);letter-spacing:1.5px}
.main-nav{display:flex;gap:4px}
.main-nav a{
  padding:8px 13px;font-size:15px;color:var(--ink-2);white-space:nowrap;
  border-radius:8px;transition:.25s;font-weight:500;
}
.main-nav a:hover{color:var(--blue);background:#E3F0FA}
.main-nav a.active{color:var(--blue);font-weight:700;position:relative}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;
  background:var(--orange);border-radius:2px;
}
.header-phone{
  display:flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:linear-gradient(135deg,var(--blue),var(--blue-soft));
  color:#fff;line-height:1.3;
}
.header-phone small{display:block;font-size:10px;opacity:.85}
.header-phone b{font-size:14px;letter-spacing:.5px}
.ph-icon{font-size:16px}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--blue-deep);margin:5px 0;border-radius:2px;transition:.3s}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;padding:150px 0 110px;
  background:
    radial-gradient(900px 420px at 85% -10%,rgba(78,151,203,.20),transparent 60%),
    radial-gradient(700px 380px at -10% 30%,rgba(20,103,168,.12),transparent 60%),
    linear-gradient(180deg,#DCEEFB 0%,#EAF4FB 78%,#F4FAFD 100%);
  overflow:hidden;
}
.hero-deco{position:absolute;border-radius:50%;filter:blur(2px)}
.hero-deco-1{width:340px;height:340px;right:-90px;top:80px;background:radial-gradient(circle at 30% 30%,rgba(240,138,29,.18),rgba(240,138,29,0) 70%)}
.hero-deco-2{width:260px;height:260px;left:-70px;bottom:60px;background:radial-gradient(circle at 60% 40%,rgba(20,103,168,.16),rgba(20,103,168,0) 70%)}
.hero-inner{display:grid;grid-template-columns:1.63fr 1fr;gap:28px;align-items:center;position:relative;z-index:2}
.hero-tag{
  display:inline-block;padding:6px 16px;border-radius:999px;
  background:rgba(255,255,255,.75);border:1px solid var(--line);
  color:var(--blue-deep);font-size:14px;font-weight:600;margin-bottom:22px;
}
.hero h1{
  font-size:min(clamp(34px,4.6vw,54px),calc((100vw - 32px)/12));line-height:1.25;color:var(--blue-dark);
  letter-spacing:2px;margin-bottom:18px;white-space:nowrap;
}
.hero h1 .accent{color:var(--orange)}
.hero-sub{font-size:18px;color:var(--ink-2);margin-bottom:30px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px}
.btn{
  display:inline-block;padding:12px 30px;border-radius:999px;
  font-size:15px;font-weight:600;cursor:pointer;border:0;transition:.25s;
}
.btn-primary{
  background:linear-gradient(135deg,var(--blue),var(--blue-soft));
  color:#fff;box-shadow:0 8px 22px rgba(20,103,168,.32);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(20,103,168,.4)}
.btn-ghost{
  background:rgba(255,255,255,.8);color:var(--blue-deep);
  border:1.5px solid var(--blue-soft);
}
.btn-ghost:hover{background:#fff;border-color:var(--blue)}
.btn-block{width:100%}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.hero-stats li{
  background:rgba(255,255,255,.72);border:1px solid var(--line);
  border-radius:12px;padding:14px 10px;text-align:center;
}
.hero-stats b{display:block;font-size:28px;color:var(--blue);font-weight:800}
.hero-stats span{font-size:12.5px;color:var(--ink-3)}
.hero-visual{position:relative;height:460px}
.hero-img-card{
  position:absolute;border-radius:16px;overflow:hidden;
  box-shadow:var(--shadow-lg);background:#fff;
}
.hero-img-card img{width:100%;height:100%;object-fit:cover}
.hero-img-card.main{width:78%;height:74%;top:0;right:0}
.hero-img-card.sub{width:46%;height:40%;bottom:0;left:0;border:6px solid #fff}
.hero-badge{
  position:absolute;right:4%;bottom:6%;
  background:linear-gradient(135deg,var(--orange),#F6A94A);
  color:#fff;padding:14px 20px;border-radius:14px;
  box-shadow:0 12px 30px rgba(240,138,29,.4);max-width:250px;line-height:1.45;
}
.hero-badge b{display:block;font-size:18px;letter-spacing:2px}
.hero-badge span{font-size:12.5px;opacity:.95}
.hero-wave{position:absolute;left:0;right:0;bottom:-1px;line-height:0}
.hero-wave svg{width:100%;height:70px}

/* ---------- 通用 Section ---------- */
.section{padding:88px 0}
.sec-head{text-align:center;margin-bottom:48px}
.sec-head.left{text-align:left;margin-bottom:28px}
.sec-en{font-size:13px;letter-spacing:4px;color:var(--blue-soft);font-weight:700;text-transform:uppercase}
.sec-head h2{font-size:34px;color:var(--blue-dark);letter-spacing:4px;margin:6px 0 12px}
.sec-line{display:inline-block;width:56px;height:4px;border-radius:3px;background:linear-gradient(90deg,var(--blue),var(--orange))}
.sec-desc{color:var(--ink-2);margin-top:16px;max-width:760px;margin-left:auto;margin-right:auto}
.sec-desc b{color:var(--orange-deep)}
.sec-desc-light{color:#DCEBF7;margin-top:14px}

/* ---------- 关于 ---------- */
.about{background:var(--bg-soft)}
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;margin-bottom:56px}
.about-copy h3{font-size:24px;color:var(--blue-deep);margin-bottom:16px;letter-spacing:1px}
.about-copy p{margin-bottom:14px;color:var(--ink-2)}
.about-copy p b{color:var(--blue-deep)}
.about-values{display:grid;gap:12px;margin-top:24px}
.about-values div{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--card);border-left:4px solid var(--orange);
  border-radius:0 12px 12px 0;padding:14px 18px;box-shadow:var(--shadow);
}
.about-values i{
  font-style:normal;flex:0 0 auto;font-size:13px;font-weight:700;color:#fff;
  background:var(--blue);border-radius:8px;padding:3px 12px;margin-top:2px;
}
.about-values b{font-size:14.5px;color:var(--ink);font-weight:600}
.about-side{display:flex;flex-direction:column;gap:20px}
.about-photo{border-radius:16px;overflow:hidden;box-shadow:var(--shadow-lg)}
.about-facts{background:var(--card);border-radius:16px;padding:8px 22px;box-shadow:var(--shadow)}
.about-facts li{display:flex;justify-content:space-between;gap:18px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.about-facts li:last-child{border-bottom:0}
.about-facts span{color:var(--ink-3);flex:0 0 auto}
.about-facts b{color:var(--blue-deep);text-align:right;font-weight:600}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature-card{
  background:var(--card);border-radius:var(--radius);padding:26px 22px;
  box-shadow:var(--shadow);border-top:3px solid transparent;transition:.3s;
}
.feature-card:hover{transform:translateY(-6px);border-top-color:var(--orange);box-shadow:var(--shadow-lg)}
.f-num{font-size:30px;font-weight:800;color:#D8EAF7;line-height:1;margin-bottom:8px}
.feature-card h4{font-size:17px;color:var(--blue-deep);margin-bottom:8px}
.feature-card p{font-size:13.5px;color:var(--ink-3)}

/* ---------- 优势 ---------- */
.advantages{
  background:
    radial-gradient(800px 400px at 90% 10%,rgba(78,151,203,.25),transparent 60%),
    linear-gradient(160deg,#12609F 0%,#1467A8 55%,#2E7DBB 100%);
  color:#fff;
}
.advantages .sec-head h2{color:#fff}
.advantages .sec-en{color:#9CC7E8}
.advantages .sec-line{background:linear-gradient(90deg,#fff,var(--orange))}
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:34px}
.adv-card{
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);
  border-radius:var(--radius);padding:28px 22px;transition:.3s;backdrop-filter:blur(4px);
}
.adv-card:hover{background:rgba(255,255,255,.18);transform:translateY(-6px)}
.adv-word{
  display:inline-block;font-size:22px;font-weight:800;letter-spacing:6px;
  color:#FFD9A8;border:1.5px solid rgba(255,217,168,.6);
  border-radius:10px;padding:4px 12px;margin-bottom:14px;
}
.adv-card h4{font-size:17px;margin-bottom:8px;letter-spacing:1px}
.adv-card p{font-size:13.5px;color:#D8EAF7}
.adv-banner{
  display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  background:rgba(255,255,255,.12);border:1px dashed rgba(255,255,255,.35);
  border-radius:var(--radius);padding:20px 26px;
}
.adv-banner b{font-size:20px;letter-spacing:3px;color:#FFD9A8;flex:0 0 auto}
.adv-banner span{font-size:14px;color:#EAF4FB}

/* ---------- 业务体系 ---------- */
.services{background:var(--bg-soft)}
.srv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.srv-card{
  background:var(--card);border-radius:var(--radius);padding:30px 26px;
  box-shadow:var(--shadow);transition:.3s;border-bottom:3px solid transparent;
}
.srv-card:hover{transform:translateY(-6px);border-bottom-color:var(--blue);box-shadow:var(--shadow-lg)}
.srv-icon{
  width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:26px;background:linear-gradient(135deg,#E3F0FA,#CFE6F7);margin-bottom:16px;
}
.srv-card h4{font-size:18px;color:var(--blue-deep);margin-bottom:8px}
.srv-card p{font-size:14px;color:var(--ink-3)}
.health{
  margin-top:56px;display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;
  background:linear-gradient(135deg,#FFFFFF,#EDF6FC);
  border:1px solid var(--line);border-radius:20px;padding:40px;box-shadow:var(--shadow);
}
.health-tag{
  display:inline-block;font-size:12.5px;font-weight:700;color:var(--orange-deep);
  background:#FDF0DE;border-radius:999px;padding:4px 14px;margin-bottom:12px;
}
.health-copy h3{font-size:24px;color:var(--blue-deep);margin-bottom:14px;letter-spacing:1px}
.health-copy p{font-size:14.5px;color:var(--ink-2)}
.health-mods{display:grid;gap:14px;align-content:center}
.hm-card{
  background:var(--card);border-left:4px solid var(--blue);
  border-radius:0 12px 12px 0;padding:16px 20px;box-shadow:var(--shadow);
}
.hm-card h5{font-size:16px;color:var(--blue);margin-bottom:6px}
.hm-card p{font-size:13.5px;color:var(--ink-3)}

/* ---------- 课程体系 ---------- */
.course-tools{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:16px}
.course-tabs{display:flex;gap:10px;flex-wrap:wrap}
.ctab{
  padding:9px 22px;border-radius:999px;border:1.5px solid var(--line);
  background:var(--card);color:var(--ink-2);font-size:14.5px;cursor:pointer;transition:.25s;font-weight:500;
}
.ctab:hover{border-color:var(--blue-soft);color:var(--blue)}
.ctab.active{background:linear-gradient(135deg,var(--blue),var(--blue-soft));color:#fff;border-color:transparent;box-shadow:0 6px 16px rgba(20,103,168,.3)}
.course-search input{
  width:320px;max-width:100%;padding:10px 18px;border-radius:999px;
  border:1.5px solid var(--line);background:var(--card);font-size:14px;color:var(--ink);
  outline:none;transition:.25s;font-family:inherit;
}
.course-search input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(20,103,168,.12)}
.course-cats{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px;min-height:34px}
.ccat{
  padding:6px 16px;border-radius:999px;font-size:13px;cursor:pointer;
  background:#DDEDF9;color:var(--blue-deep);border:0;transition:.2s;font-family:inherit;
}
.ccat:hover{background:#CBE3F5}
.ccat.active{background:var(--orange);color:#fff}
.course-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;min-height:200px}
.course-item{
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:14px 16px;display:flex;gap:10px;align-items:flex-start;transition:.25s;
}
.course-item:hover{border-color:var(--blue-soft);box-shadow:var(--shadow);transform:translateY(-3px)}
.course-item .ci-no{
  flex:0 0 auto;font-size:11px;font-weight:700;color:var(--blue);
  background:#E3F0FA;border-radius:6px;padding:2px 7px;margin-top:3px;
}
.course-item .ci-body{flex:1;min-width:0}
.course-item h5{font-size:14px;color:var(--ink);font-weight:600;line-height:1.5}
.course-item .ci-meta{display:flex;gap:8px;margin-top:6px;flex-wrap:wrap}
.course-item .ci-meta span{font-size:11.5px;color:var(--ink-3);background:var(--bg-soft);border-radius:6px;padding:1px 8px}
.course-empty{grid-column:1/-1;text-align:center;color:var(--ink-3);padding:60px 0}
.course-more-wrap{text-align:center;margin-top:26px}
.course-note{text-align:center;color:var(--ink-3);font-size:13.5px;margin-top:18px}
.course-note a{color:var(--blue);font-weight:600}

/* ---------- 微咨询 ---------- */
.wechat{
  background:
    radial-gradient(700px 360px at 8% 0%,rgba(240,138,29,.10),transparent 60%),
    linear-gradient(160deg,#12609F,#1467A8 60%,#2E7DBB);
  color:#fff;
}
.wechat .sec-head h2{color:#fff}
.wechat .sec-en{color:#9CC7E8}
.wechat .sec-line{background:linear-gradient(90deg,#fff,var(--orange))}
.wc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.wc-card{
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);
  border-radius:var(--radius);padding:26px 24px;transition:.3s;backdrop-filter:blur(4px);
}
.wc-card:hover{background:rgba(255,255,255,.18);transform:translateY(-6px)}
.wc-card h4{font-size:18px;letter-spacing:1px;margin-bottom:6px}
.wc-meta{
  display:inline-block;font-size:12px;color:#FFE3BF;background:rgba(240,138,29,.25);
  border:1px solid rgba(255,227,191,.4);border-radius:999px;padding:2px 12px;margin-bottom:12px;
}
.wc-card p{font-size:13.5px;color:#DCEBF7}

/* ---------- 云课堂 ---------- */
.cloud{background:var(--bg-soft)}
.cloud-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center}
.cloud-copy p{color:var(--ink-2);margin-bottom:16px}
.cloud-points{margin:6px 0 26px;display:grid;gap:10px}
.cloud-points li{
  background:var(--card);border:1px solid var(--line);border-radius:10px;
  padding:10px 16px;font-size:14.5px;color:var(--ink-2);
}
.cloud-points b{color:var(--orange-deep)}
.cloud-side{display:flex;flex-direction:column;gap:20px}
.qr-card{
  background:var(--card);border-radius:16px;box-shadow:var(--shadow-lg);
  padding:24px;text-align:center;
}
.qr-card img{width:170px;margin:0 auto 14px;border-radius:10px}
.qr-card b{display:block;color:var(--blue-deep);font-size:16px}
.qr-card span{font-size:13px;color:var(--ink-3)}
.cloud-photo{border-radius:16px;overflow:hidden;box-shadow:var(--shadow-lg)}

/* ---------- 特色课程 ---------- */
.sp-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.sp-card{
  background:var(--card);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);
  border-top:3px solid var(--blue);transition:.3s;
}
.sp-card:nth-child(2n){border-top-color:var(--orange)}
.sp-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.sp-card h4{font-size:18px;color:var(--blue-deep);margin-bottom:10px;display:flex;align-items:center;gap:10px}
.sp-card h4 span{font-size:22px}
.sp-card p{font-size:13.8px;color:var(--ink-3)}

/* ---------- 客户案例 ---------- */
.clients{
  background:
    radial-gradient(800px 380px at 95% 20%,rgba(78,151,203,.22),transparent 60%),
    linear-gradient(160deg,#12609F,#1467A8 60%,#2E7DBB);
  color:#fff;
}
.clients .sec-head h2{color:#fff}
.clients .sec-en{color:#9CC7E8}
.clients .sec-line{background:linear-gradient(90deg,#fff,var(--orange))}
.client-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.cl-card{
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.2);
  border-radius:12px;padding:18px 16px;transition:.3s;
}
.cl-card:hover{background:rgba(255,255,255,.18);transform:translateY(-4px)}
.cl-card h5{font-size:15px;letter-spacing:1px;color:#FFD9A8;margin-bottom:8px}
.cl-card p{font-size:12.5px;color:#DCEBF7;line-height:1.7}

/* ---------- 联系我们 ---------- */
.contact{background:var(--bg-soft)}
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:start}
.contact-list{display:grid;gap:14px;margin-top:8px}
.contact-list li{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 18px;
}
.contact-list i{
  font-style:normal;flex:0 0 auto;width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;font-size:18px;
  background:linear-gradient(135deg,#E3F0FA,#CFE6F7);
}
.contact-list span{display:block;font-size:12.5px;color:var(--ink-3)}
.contact-list b{font-size:15px;color:var(--blue-deep);font-weight:600}
.contact-card{
  background:var(--card);border-radius:18px;padding:32px;box-shadow:var(--shadow-lg);
  border-top:4px solid var(--orange);
}
.contact-card h3{font-size:22px;color:var(--blue-deep);margin-bottom:4px}
.cc-sub{font-size:13.5px;color:var(--ink-3);margin-bottom:20px}
.contact-card form{display:grid;gap:14px}
.contact-card label{font-size:13.5px;color:var(--ink-2);display:grid;gap:6px;font-weight:500}
.contact-card input,.contact-card select,.contact-card textarea{
  padding:10px 14px;border-radius:10px;border:1.5px solid var(--line);
  font-size:14px;font-family:inherit;color:var(--ink);outline:none;background:var(--bg-soft);transition:.2s;
}
.contact-card input:focus,.contact-card select:focus,.contact-card textarea:focus{
  border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px rgba(20,103,168,.10);
}
.cc-ok{margin-top:14px;color:#1B8A4C;font-size:14px;font-weight:600}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--blue-dark);color:#B9D4E8;padding:44px 0 26px}
.footer-inner{display:grid;grid-template-columns:1fr 1fr 1.2fr;gap:30px;align-items:start}
.footer-brand{display:flex;gap:14px;align-items:flex-start}
.footer-logo{height:52px;background:#fff;border-radius:10px;padding:5px}
.footer-brand p{font-size:13.5px;line-height:1.7}
.footer-brand b{color:#fff}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 22px;padding-top:8px}
.footer-links a{font-size:13.5px;transition:.2s}
.footer-links a:hover{color:#fff}
.footer-contact{font-size:12.5px;line-height:1.9;text-align:right}
.copyright{margin-top:10px;color:#7FA6C4}

/* ---------- 回到顶部 ---------- */
#backTop{
  position:fixed;right:26px;bottom:30px;width:46px;height:46px;border-radius:50%;
  border:0;background:linear-gradient(135deg,var(--blue),var(--blue-soft));color:#fff;
  font-size:20px;cursor:pointer;box-shadow:0 8px 20px rgba(20,103,168,.35);
  opacity:0;pointer-events:none;transition:.3s;z-index:90;
}
#backTop.show{opacity:1;pointer-events:auto}
#backTop:hover{transform:translateY(-4px)}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}
.delay-1{transition-delay:.1s}.delay-2{transition-delay:.2s}
.delay-3{transition-delay:.3s}.delay-4{transition-delay:.4s}.delay-5{transition-delay:.5s}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-visual{height:400px;max-width:560px}
  .feature-grid,.adv-grid{grid-template-columns:repeat(2,1fr)}
  .srv-grid,.wc-grid{grid-template-columns:repeat(2,1fr)}
  .course-list{grid-template-columns:repeat(2,1fr)}
  .client-grid{grid-template-columns:repeat(3,1fr)}
  .about-grid,.health,.cloud-grid,.contact-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;text-align:left}
  .footer-contact{text-align:left}
}
@media (max-width:1180px){
  .header-phone{display:none}
  .nav-toggle{display:block}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;flex-direction:column;
    background:#fff;border-bottom:1px solid var(--line);padding:12px 6%;
    gap:2px;transform:translateY(-130%);transition:.35s;box-shadow:0 16px 30px rgba(14,78,134,.12);
  }
  .main-nav.open{transform:none}
  .main-nav a{padding:10px 13px}
}
@media (max-width:640px){
  .hero{padding:120px 0 90px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .hero-visual{height:340px}
  .feature-grid,.adv-grid,.srv-grid,.wc-grid,.sp-grid{grid-template-columns:1fr}
  .course-list{grid-template-columns:1fr}
  .client-grid{grid-template-columns:repeat(2,1fr)}
  .course-search{width:100%}
  .course-search input{width:100%}
  .section{padding:64px 0}
}