/* ========== 基础变量 ========== */
:root{
  --ink-900:#0B1733;
  --ink-800:#0B3D91;
  --ink-700:#1D4ED8;
  --ink-600:#2563EB;
  --ink-500:#3B82F6;
  --sky-300:#7DD3FC;
  --sky-100:#E0F2FE;
  --sky-50:#F0F9FF;
  --line:#E6ECF5;
  --bg:#FFFFFF;
  --bg-soft:#F7FAFD;
  --text-1:#0F172A;
  --text-2:#475569;
  --text-3:#94A3B8;
  --maxw:1280px;
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Source Han Sans SC',sans-serif;
  font-size:15px;line-height:1.7;color:var(--text-1);background:var(--bg);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 32px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-700);font-weight:600}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--ink-700)}

/* ========== 导航 ========== */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(255,255,255,.78);backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid rgba(11,61,145,.06);transition:box-shadow .3s ease,background .3s ease}
.nav.scrolled{box-shadow:0 4px 30px rgba(11,61,145,.06);background:rgba(255,255,255,.94)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:34px;width:auto}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:14px;color:var(--ink-900);letter-spacing:.04em;font-weight:700}
.brand-text span{font-size:11px;color:var(--text-3);letter-spacing:.18em;text-transform:uppercase}
.menu{display:flex;gap:34px;align-items:center}
.menu a{font-size:14px;color:var(--text-2);font-weight:500;transition:color .2s ease;position:relative;white-space:nowrap}
.menu a:hover{color:var(--ink-800)}
.menu a::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--ink-700);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.menu a:hover::after,.menu a.active::after{transform:scaleX(1)}
.menu a.active{color:var(--ink-800)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:999px;font-size:14px;font-weight:600;letter-spacing:.02em;transition:all .25s ease;cursor:pointer;border:1px solid transparent}
.btn-primary{background:var(--ink-800);color:#fff}
.btn-primary:hover{background:var(--ink-700);transform:translateY(-1px);box-shadow:0 10px 24px -10px rgba(11,61,145,.5)}
.menu a.btn-primary,.menu a.btn-primary:hover{color:#fff}
.btn-ghost{background:transparent;color:var(--ink-800);border-color:rgba(11,61,145,.25)}
.btn-ghost:hover{border-color:var(--ink-800);background:rgba(11,61,145,.04)}
.btn .arrow{transition:transform .25s ease}
.btn:hover .arrow{transform:translateX(3px)}
.btn-on-dark{background:#fff;color:var(--ink-900)}
.btn-on-dark:hover{background:var(--sky-100)}
.btn-ghost-dark{background:transparent;color:#fff;border-color:rgba(255,255,255,.3)}
.btn-ghost-dark:hover{border-color:#fff;background:rgba(255,255,255,.06)}

/* ========== Hero ========== */
.hero{position:relative;overflow:hidden;padding:168px 0 120px;background:radial-gradient(900px 480px at 88% -10%,rgba(125,211,252,.18),transparent 60%),radial-gradient(700px 480px at 8% 20%,rgba(37,99,235,.08),transparent 65%),linear-gradient(180deg,#fff 0%,#F7FAFD 100%);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center}
.hero h1{font-size:64px;line-height:1.08;letter-spacing:-.02em;color:var(--ink-900);font-weight:700;margin-top:18px}
.hero h1 .accent{background:linear-gradient(135deg,var(--ink-800) 0%,var(--ink-600) 50%,var(--sky-300) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{margin-top:24px;font-size:18px;line-height:1.75;color:var(--text-2);max-width:560px}
.hero .cta-row{margin-top:40px;display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero .meta{margin-top:28px;display:flex;gap:36px;color:var(--text-3);font-size:13px}
.hero .meta b{color:var(--ink-900);font-weight:700;font-size:18px;display:block;letter-spacing:.01em}
.hero-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;padding:36px 32px;box-shadow:0 30px 80px -40px rgba(11,61,145,.25),0 2px 6px rgba(11,61,145,.04)}
.hero-card::before{content:"";position:absolute;inset:-1px;border-radius:20px;padding:1px;background:linear-gradient(135deg,rgba(125,211,252,.6),rgba(11,61,145,.15),transparent 70%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.hero-card .label{font-size:11px;letter-spacing:.24em;color:var(--ink-700);font-weight:700;text-transform:uppercase}
.hero-card h3{margin-top:10px;font-size:22px;color:var(--ink-900);line-height:1.4}
.hero-card ul{margin-top:22px;list-style:none;display:grid;gap:14px}
.hero-card li{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--text-2)}
.hero-card li .dot{flex:none;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:11px;font-weight:700;background:linear-gradient(135deg,var(--ink-700),var(--ink-500))}
.hero-card .footer{margin-top:28px;padding-top:20px;border-top:1px dashed var(--line);display:flex;justify-content:space-between;align-items:center;color:var(--text-3);font-size:12px}
.spark-layer{position:absolute;inset:0;pointer-events:none;opacity:.9}
.spark-layer svg{position:absolute;right:-120px;top:-40px;width:760px;height:760px}

/* ========== 内页页头 ========== */
.page-hero{padding:160px 0 72px;background:radial-gradient(800px 400px at 85% -10%,rgba(125,211,252,.16),transparent 60%),linear-gradient(180deg,#fff 0%,#F7FAFD 100%);border-bottom:1px solid var(--line)}
.page-hero h1{font-size:52px;line-height:1.15;color:var(--ink-900);font-weight:700;letter-spacing:-.02em;margin-top:14px}
.page-hero p{margin-top:16px;font-size:17px;color:var(--text-2);max-width:640px;line-height:1.75}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb a:hover{color:var(--ink-700)}
.breadcrumb .sep{color:var(--text-3)}

/* ========== Section 通用 ========== */
section{padding:120px 0}
.section-head{max-width:780px;margin-bottom:60px}
.section-head .eyebrow{margin-bottom:18px}
.section-head h2{font-size:46px;line-height:1.18;letter-spacing:-.015em;color:var(--ink-900);font-weight:700}
.section-head p{margin-top:18px;font-size:17px;color:var(--text-2);max-width:640px;line-height:1.75}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.center .eyebrow{justify-content:center}
.section-head.center p{margin-left:auto;margin-right:auto}

/* ========== 客户 logo 墙（100×60） ========== */
.clients{background:var(--bg-soft);padding:88px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.clients .label{text-align:center;color:var(--text-3);font-size:12px;letter-spacing:.24em;text-transform:uppercase;margin-bottom:36px;font-weight:600}
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.logo-wall .cell{background:#fff;height:100px;display:grid;place-items:center;padding:0 8px;transition:all .25s ease}
.logo-wall .cell:hover{background:var(--sky-50)}
.logo-item{width:100%;max-width:140px;height:60px;display:grid;place-items:center}
.logo-item img{max-width:100px;max-height:60px;width:auto;height:auto;object-fit:contain;filter:grayscale(1);opacity:.72;transition:all .3s ease}
.logo-item:hover img{filter:grayscale(0);opacity:1}
.logo-item .name{color:#64748B;font-weight:600;font-size:13px;letter-spacing:.04em;text-align:center;line-height:1.3}
.logo-wall .cell:hover .name{color:var(--ink-800)}
.clients .more-link{margin-top:32px;text-align:center}
.clients .more-link a{display:inline-flex;align-items:center;gap:8px;color:var(--ink-700);font-weight:600;font-size:14px}

/* ========== 合作伙伴页 ========== */
.partners-intro{padding:80px 0 20px}
.partner-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:0 0 80px}
.partner-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:32px 20px;display:flex;flex-direction:column;align-items:center;gap:16px;transition:all .25s ease}
.partner-card:hover{border-color:rgba(11,61,145,.25);transform:translateY(-3px);box-shadow:0 24px 50px -34px rgba(11,61,145,.25)}
.partner-card .logo-item{height:60px}
.partner-card .logo-item img{max-width:100px;max-height:60px}
.partner-card h3{font-size:15px;color:var(--ink-900);font-weight:600;text-align:center}
.partner-card .cat{font-size:12px;color:var(--text-3);letter-spacing:.04em}

/* ========== 数据大字报 ========== */
.stats{padding:120px 0;background:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:36px}
.stat{min-width:0}
.stat .num{font-size:68px;line-height:1;font-weight:700;letter-spacing:-.03em;background:linear-gradient(180deg,var(--ink-900) 0%,var(--ink-700) 100%);-webkit-background-clip:text;background-clip:text;color:transparent;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}
.stat .unit{font-size:22px;color:var(--ink-700);margin-left:6px;font-weight:600}
.stat .desc{margin-top:14px;color:var(--text-2);font-size:14px;line-height:1.75;word-break:break-word}
.stat .sep{margin-top:18px;width:36px;height:2px;background:var(--ink-700)}

/* ========== 四大产品 ========== */
.products{background:linear-gradient(180deg,#fff 0%,#F7FAFD 100%);padding:120px 0;border-top:1px solid var(--line)}
.prod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.prod{position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;padding:40px 36px;transition:all .35s cubic-bezier(.2,.7,.2,1);overflow:hidden}
.prod::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--ink-800),var(--sky-300));transform:scaleX(0);transform-origin:left;transition:transform .4s ease}
.prod:hover{transform:translateY(-4px);box-shadow:0 30px 70px -40px rgba(11,61,145,.25);border-color:rgba(11,61,145,.2)}
.prod:hover::before{transform:scaleX(1)}
.prod .tag{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.2em;color:var(--ink-700);text-transform:uppercase;padding:5px 10px;background:var(--sky-50);border-radius:6px}
.prod h3{margin-top:18px;font-size:26px;color:var(--ink-900);font-weight:700;line-height:1.35}
.prod .desc{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.75}
.prod .modules{margin-top:24px;padding-top:24px;border-top:1px solid var(--line);display:grid;gap:10px;list-style:none}
.prod .modules li{font-size:14px;color:var(--text-1);display:flex;gap:10px;align-items:flex-start}
.prod .modules li::before{content:"";flex:none;width:6px;height:6px;border-radius:50%;background:var(--ink-700);margin-top:9px}
.prod .arrow-link{margin-top:28px;display:inline-flex;align-items:center;gap:8px;color:var(--ink-700);font-weight:600;font-size:14px}

/* ========== 方法论 ========== */
.method{padding:120px 0;background:#fff;border-top:1px solid var(--line)}
.method .head-row{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:end;margin-bottom:60px}
.method .head-row h2{font-size:46px;line-height:1.18;color:var(--ink-900);font-weight:700;letter-spacing:-.015em}
.method .head-row p{color:var(--text-2);font-size:17px;line-height:1.75}
.method .pill-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:40px}
.method .pill-row .pill{font-size:12px;letter-spacing:.18em;color:var(--ink-700);font-weight:700;text-transform:uppercase;padding:7px 14px;border:1px solid rgba(11,61,145,.2);border-radius:999px}
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;position:relative}
.steps::before{content:"";position:absolute;left:6%;right:6%;top:38px;height:1px;background:linear-gradient(90deg,transparent,var(--ink-700) 20%,var(--ink-700) 80%,transparent)}
.step{position:relative;padding:0 8px}
.step .idx{width:76px;height:76px;border-radius:50%;background:#fff;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink-800);font-weight:700;font-size:24px;position:relative;z-index:1;box-shadow:0 0 0 8px #fff}
.step h4{margin-top:20px;font-size:18px;color:var(--ink-900);font-weight:700}
.step .en{font-size:11px;letter-spacing:.22em;color:var(--text-3);text-transform:uppercase;margin-top:4px;font-weight:600}
.step p{margin-top:14px;color:var(--text-2);font-size:14px;line-height:1.7}

/* ========== 案例 ========== */
.cases{padding:120px 0;background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.case-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}
.case{position:relative;background:#fff;border:1px solid var(--line);border-radius:18px;padding:36px;transition:all .3s ease;overflow:hidden}
.case:hover{border-color:rgba(11,61,145,.3);box-shadow:0 30px 70px -40px rgba(11,61,145,.2)}
.case .badge{display:inline-flex;align-items:center;gap:6px;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-700);font-weight:700}
.case .badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ink-700)}
.case h3{margin-top:14px;font-size:22px;color:var(--ink-900);font-weight:700;line-height:1.4}
.case p{margin-top:12px;color:var(--text-2);font-size:14px;line-height:1.75}
.case ul{margin-top:18px;display:grid;gap:8px;list-style:none}
.case ul li{font-size:13px;color:var(--text-1);padding-left:18px;position:relative;line-height:1.6}
.case ul li::before{content:"—";position:absolute;left:0;color:var(--ink-700)}
.case.feature{background:linear-gradient(135deg,#0B1733 0%,#0B3D91 100%);color:#fff;border:none}
.case.feature h3,.case.feature p{color:#fff}
.case.feature .badge{color:var(--sky-300)}
.case.feature .badge::before{background:var(--sky-300)}
.case.feature ul li{color:rgba(255,255,255,.85)}
.case.feature ul li::before{color:var(--sky-300)}
.case.feature .spark-mini{position:absolute;right:-30px;top:-30px;width:240px;height:240px;opacity:.5}

/* ========== 团队 ========== */
.team{padding:120px 0;background:#fff;border-top:1px solid var(--line)}
.team .lead{display:grid;grid-template-columns:280px 1fr;gap:48px;align-items:start;padding:48px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(135deg,#fff 0%,#F0F9FF 100%)}
.team .lead .ava{width:100%;aspect-ratio:1/1;border-radius:14px;background:linear-gradient(135deg,#0B3D91,#1D4ED8);display:grid;place-items:center;color:#fff;font-size:64px;font-weight:700;letter-spacing:.04em;position:relative;overflow:hidden}
.team .lead .ava img{width:100%;height:100%;object-fit:cover}
.team .lead .ava::after{content:"";position:absolute;inset:0;background:radial-gradient(400px 200px at 80% 10%,rgba(125,211,252,.35),transparent 60%)}
.team .lead h3{font-size:34px;color:var(--ink-900);font-weight:700;letter-spacing:-.01em}
.team .lead .role{margin-top:6px;color:var(--ink-700);font-weight:600;letter-spacing:.04em}
.team .lead .bio{margin-top:18px;color:var(--text-2);font-size:15px;line-height:1.85}
.team .lead .ex{margin-top:24px;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;color:var(--text-3);font-size:12px;letter-spacing:.04em}
.team .lead .ex div{padding-top:14px;border-top:1px solid var(--line)}
.team .lead .ex strong{display:block;color:var(--ink-900);font-size:16px;letter-spacing:0;font-weight:700;margin-bottom:2px}
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
.member{padding:24px;border:1px solid var(--line);border-radius:14px;background:#fff;transition:all .25s ease}
.member:hover{border-color:rgba(11,61,145,.25);transform:translateY(-2px);box-shadow:0 20px 40px -28px rgba(11,61,145,.2)}
.member .avatar{width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,#E0F2FE,#7DD3FC);display:grid;place-items:center;color:#0B3D91;font-weight:700;font-size:18px;margin-bottom:14px;overflow:hidden}
.member .avatar img{width:100%;height:100%;object-fit:cover}
.member h4{font-size:16px;color:var(--ink-900);font-weight:700}
.member .role{color:var(--text-3);font-size:12px;margin-top:2px;letter-spacing:.04em}
.member .tag-row{margin-top:12px;display:flex;gap:6px;flex-wrap:wrap}
.member .tag-row span{font-size:11px;color:var(--ink-700);background:var(--sky-50);padding:3px 8px;border-radius:4px}

/* ========== 新闻 ========== */
.news-featured{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;transition:all .3s ease}
.news-card:hover{transform:translateY(-4px);box-shadow:0 30px 70px -40px rgba(11,61,145,.22);border-color:rgba(11,61,145,.2)}
.news-card .cover{height:170px;background:linear-gradient(135deg,#0B3D91 0%,#1D4ED8 60%,#7DD3FC 120%);display:grid;place-items:center;color:rgba(255,255,255,.9);position:relative;overflow:hidden}
.news-card .cover img{width:100%;height:100%;object-fit:cover}
.news-card .cover .cat{position:absolute;top:14px;left:14px;background:rgba(255,255,255,.92);color:var(--ink-800);font-size:11px;font-weight:700;letter-spacing:.08em;padding:4px 10px;border-radius:999px}
.news-card .body{padding:24px;display:flex;flex-direction:column;flex:1}
.news-card .date{font-size:12px;color:var(--text-3);letter-spacing:.04em}
.news-card h3{margin-top:10px;font-size:18px;line-height:1.45;color:var(--ink-900);font-weight:700;flex:1}
.news-card h3 a:hover{color:var(--ink-700)}
.news-card p{margin-top:12px;font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-card .more{margin-top:16px;color:var(--ink-700);font-weight:600;font-size:13px;display:inline-flex;align-items:center;gap:6px}

.news-archive{margin-top:64px}
.news-archive .sub-title{font-size:20px;color:var(--ink-900);font-weight:700;margin-bottom:8px}
.news-list{list-style:none;border-top:1px solid var(--line)}
.news-list li{border-bottom:1px solid var(--line);padding:22px 4px;display:grid;grid-template-columns:110px 1fr auto;gap:24px;align-items:center;transition:background .2s ease}
.news-list li:hover{background:var(--sky-50)}
.news-list .date{font-size:13px;color:var(--text-3);letter-spacing:.04em;font-variant-numeric:tabular-nums}
.news-list .main{min-width:0}
.news-list .main h3{font-size:16px;color:var(--ink-900);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-list .main h3 a:hover{color:var(--ink-700)}
.news-list .main p{font-size:13px;color:var(--text-2);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-top:4px}
.news-list .cat{font-size:11px;color:var(--ink-700);background:var(--sky-50);padding:3px 10px;border-radius:999px;font-weight:600;white-space:nowrap}

/* ========== 二维码 ========== */
.qr-box{display:flex;gap:20px;align-items:center}
.qr-box img{width:112px;height:112px;border-radius:10px;border:1px solid var(--line);background:#fff}
.qr-box .qr-txt h5{font-size:15px;color:var(--ink-900);font-weight:700}
.qr-box .qr-txt p{margin-top:6px;color:var(--text-2);font-size:13px;line-height:1.6}

/* ========== 信任带 / CTA ========== */
.cta-band{padding:120px 0;background:linear-gradient(135deg,#0B1733 0%,#0B3D91 60%,#1D4ED8 100%);color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;right:-160px;top:-160px;width:560px;height:560px;background:radial-gradient(closest-side,rgba(125,211,252,.3),transparent 70%)}
.cta-band::after{content:"";position:absolute;left:-100px;bottom:-100px;width:400px;height:400px;background:radial-gradient(closest-side,rgba(125,211,252,.18),transparent 70%)}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.4fr 1fr;gap:60px;align-items:center}
.cta-band h2{font-size:52px;line-height:1.15;color:#fff;font-weight:700;letter-spacing:-.015em}
.cta-band p{margin-top:18px;color:rgba(255,255,255,.78);font-size:17px;line-height:1.8;max-width:560px}
.cta-band .btn-row{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.cta-contact{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:32px;backdrop-filter:blur(8px)}
.cta-contact h4{color:#fff;font-size:14px;letter-spacing:.18em;text-transform:uppercase;font-weight:700}
.cta-contact .line{margin-top:18px;color:rgba(255,255,255,.92);font-size:15px;display:flex;gap:12px;align-items:flex-start}
.cta-contact .line span{color:var(--sky-300);font-weight:600;min-width:64px;font-size:12px;letter-spacing:.18em;text-transform:uppercase;padding-top:3px}
.cta-contact .qr-divider{margin-top:22px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12)}
.cta-contact .qr-box img{border-color:rgba(255,255,255,.2)}
.cta-contact .qr-box .qr-txt h5{color:#fff}
.cta-contact .qr-box .qr-txt p{color:rgba(255,255,255,.72)}

/* ===== 在线咨询表单（紫色玻璃拟态 + 紫蓝渐变） ===== */
.cta-contact .form-title{margin-bottom:18px}
.cta-contact .form-title h4{color:#fff;font-size:14px;letter-spacing:.22em;text-transform:uppercase;font-weight:700;margin:0;display:inline-block}
.cta-contact .form-title .line{width:48px;height:3px;background:linear-gradient(90deg,#7C3AED 0%,#3B82F6 100%);border-radius:2px;margin-top:10px;box-shadow:0 0 14px rgba(124,58,237,.6)}

.cta-contact .contact-form{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:14px}

.cta-contact .contact-form input,
.cta-contact .contact-form select,
.cta-contact .contact-form textarea{
  width:100%;padding:14px 18px;
  border:1px solid rgba(139,92,246,.3);border-radius:14px;
  background:rgba(255,255,255,.04);
  color:#fff;font-size:14px;font-family:inherit;line-height:1.5;
  outline:none;
  box-shadow:0 1px 0 rgba(255,255,255,.04) inset,0 4px 14px -8px rgba(0,0,0,.3);
  transition:border-color .25s ease,background .25s ease,box-shadow .25s ease,transform .2s ease;
}
.cta-contact .contact-form input::placeholder,
.cta-contact .contact-form textarea::placeholder{color:rgba(167,139,250,.7)}
.cta-contact .contact-form input:hover,
.cta-contact .contact-form select:hover,
.cta-contact .contact-form textarea:hover{border-color:rgba(139,92,246,.55);background:rgba(255,255,255,.06)}
.cta-contact .contact-form input:focus,
.cta-contact .contact-form select:focus,
.cta-contact .contact-form textarea:focus{
  border-color:rgba(139,92,246,.85);
  background:rgba(255,255,255,.08);
  box-shadow:0 0 0 4px rgba(139,92,246,.18),0 8px 24px -12px rgba(0,0,0,.4);
  transform:translateY(-1px);
}

/* select 紫色三角箭头 */
.cta-contact .contact-form select{
  appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%23A78BFA' d='M0 0l5 6 5-6z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;background-size:10px;
  padding-right:38px;
}
.cta-contact .contact-form select option{color:var(--text-1);background:#fff}

/* 留言框：跨列 + 固定 140px，不可拉伸 */
.cta-contact .contact-form textarea.full{grid-column:1 / -1;resize:none;height:140px;min-height:140px;max-height:140px;line-height:1.7}

/* 提交按钮：紫蓝渐变 */
.cta-contact .contact-form .submit-btn{
  grid-column:1 / -1;
  display:flex;justify-content:center;align-items:center;gap:10px;
  padding:16px 28px;border:none;border-radius:14px;cursor:pointer;
  background:linear-gradient(135deg,#7C3AED 0%,#4F46E5 50%,#2563EB 100%);
  color:#fff;font-size:16px;font-weight:700;letter-spacing:.06em;
  box-shadow:0 10px 30px -10px rgba(124,58,237,.6),0 0 0 1px rgba(255,255,255,.08) inset;
  transition:transform .25s cubic-bezier(.2,.7,.2,1),box-shadow .25s ease,filter .2s ease;
  position:relative;overflow:hidden;
}
.cta-contact .contact-form .submit-btn::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(255,255,255,.18),transparent 55%);
  opacity:0;transition:opacity .25s ease;
}
.cta-contact .contact-form .submit-btn:hover{
  transform:translateY(-2px);
  box-shadow:0 16px 40px -10px rgba(124,58,237,.7),0 0 0 1px rgba(255,255,255,.14) inset;
  filter:brightness(1.06);
}
.cta-contact .contact-form .submit-btn:hover::before{opacity:1}
.cta-contact .contact-form .submit-btn:active{transform:translateY(0);box-shadow:0 6px 18px -8px rgba(124,58,237,.5)}

.cta-contact .form-ok{
  margin:0 0 14px;padding:12px 14px;
  background:rgba(34,197,94,.18);border:1px solid rgba(34,197,94,.5);color:#86efac;
  border-radius:10px;font-size:13px;font-weight:600;letter-spacing:.02em;
  display:flex;align-items:center;gap:8px;
  animation:slideDown .4s cubic-bezier(.2,.7,.2,1);
}
@keyframes slideDown{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}

/* ---------- 表单防机器人：蜜罐 / 人机验证行 / 错误提示 ---------- */
/* 蜜罐：真人完全看不到，机器人会填满所有输入框 */
.hp-field{position:absolute!important;left:-9999px!important;top:auto!important;width:1px!important;height:1px!important;overflow:hidden!important;opacity:0!important;pointer-events:none!important;z-index:-1!important}
.cta-contact .contact-form .guard-row{grid-column:1 / -1;display:flex;align-items:center;gap:10px}
.cta-contact .contact-form .guard-row .guard-q{
  flex:none;display:inline-flex;align-items:center;justify-content:center;
  min-width:104px;padding:0 14px;height:48px;
  background:rgba(167,139,250,.14);border:1px solid rgba(167,139,250,.42);
  border-radius:10px;color:#e9d5ff;font-size:15px;font-weight:700;letter-spacing:.06em;
  font-variant-numeric:tabular-nums;user-select:none;-webkit-user-select:none;
}
.cta-contact .contact-form .guard-row input{flex:1;min-width:0}

.cta-contact .form-err{
  margin:0 0 14px;padding:12px 14px;
  background:rgba(239,68,68,.16);border:1px solid rgba(239,68,68,.5);color:#fca5a5;
  border-radius:10px;font-size:13px;font-weight:600;letter-spacing:.02em;
  display:flex;align-items:center;gap:8px;
  animation:slideDown .4s cubic-bezier(.2,.7,.2,1);
}

/* 二维码区域精致 */
.cta-contact .qr-divider{margin-top:22px;padding-top:20px;border-top:1px solid rgba(255,255,255,.18)}
.cta-contact .qr-box{display:flex;gap:16px;align-items:center}
.cta-contact .qr-box img{width:96px;height:96px;border-radius:10px;background:#fff;padding:6px;box-shadow:0 8px 22px -8px rgba(0,0,0,.45)}
.cta-contact .qr-box .qr-txt h5{color:#fff;font-size:14px;font-weight:700}
.cta-contact .qr-box .qr-txt p{margin-top:4px;color:rgba(255,255,255,.7);font-size:12px;line-height:1.5}

/* ========== Footer ========== */
footer{padding:64px 0 36px;background:#fff;border-top:1px solid var(--line);color:var(--text-2);font-size:13px}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;align-items:start}
.foot h5{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-900);font-weight:700;margin-bottom:18px}
.foot ul{list-style:none;display:grid;gap:10px}
.foot ul a:hover{color:var(--ink-800)}
.foot .legal{margin-top:36px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--text-3);font-size:12px}

/* ========== 动效 ========== */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}

/* ========== 响应式 ========== */
@media (max-width:1080px){
  .hero h1{font-size:48px}
  .section-head h2,.method .head-row h2{font-size:36px}
  .page-hero h1{font-size:40px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:48px}
  .stat .num{font-size:60px}
  .prod-grid,.case-grid,.team-grid,.cta-inner,.team .lead,.method .head-row{grid-template-columns:1fr;gap:36px}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .partner-grid{grid-template-columns:repeat(3,1fr)}
  .news-featured{grid-template-columns:repeat(2,1fr)}
  .course-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps::before{display:none}
  .foot{grid-template-columns:1fr 1fr}
  .hero{padding:140px 0 80px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .menu{display:none}
  .hero h1{font-size:36px}
  .hero .meta{flex-wrap:wrap;gap:18px}
  .stats-grid{grid-template-columns:1fr;gap:32px;text-align:center}
  .team .lead .ex{grid-template-columns:1fr 1fr}
  .foot{grid-template-columns:1fr}
  section{padding:88px 0}
  .cta-band h2{font-size:34px}
  .cta-contact .contact-form{grid-template-columns:1fr}
  .cta-contact .contact-form .field-group.full{grid-column:1}
  .page-hero{padding:130px 0 56px}
  .page-hero h1{font-size:32px}
  .logo-wall{grid-template-columns:repeat(2,1fr)}
  .partner-grid{grid-template-columns:repeat(2,1fr)}
  .news-featured{grid-template-columns:1fr}
  .news-list li{grid-template-columns:1fr;gap:8px}
  .news-list .cat{justify-self:start}
  .course-grid{grid-template-columns:1fr}
  .detail-meta{grid-template-columns:1fr}
}

/* ===== 培训课程卡片 ===== */
.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.course-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;transition:all .3s ease}
.course-card:hover{transform:translateY(-4px);box-shadow:0 30px 60px -30px rgba(11,61,145,.25);border-color:rgba(11,61,145,.2)}
.course-cover{height:170px;background:linear-gradient(135deg,#0B3D91 0%,#1D4ED8 60%,#7DD3FC 130%);display:grid;place-items:center;overflow:hidden}
.course-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.course-card:hover .course-cover img{transform:scale(1.04)}
.course-cover .cover-fallback{color:rgba(255,255,255,.85);font-size:13px;letter-spacing:.2em;font-weight:600}
.course-body{padding:24px;display:flex;flex-direction:column;flex:1}
.course-body h3{font-size:18px;line-height:1.4;color:var(--ink-900);font-weight:700}
.course-meta{margin-top:10px;display:flex;gap:16px;font-size:12px;color:var(--ink-700);font-weight:600}
.course-purpose{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.7;flex:1}
.course-aud{margin-top:10px;font-size:12px;color:var(--text-3);line-height:1.5}
.course-more{margin-top:16px;color:var(--ink-700);font-weight:600;font-size:13px;display:inline-flex;align-items:center;gap:6px}
.course-more .arrow{transition:transform .25s ease}
.course-card:hover .course-more .arrow{transform:translateX(4px)}

/* ===== 课程详情 ===== */
.detail-meta{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.meta-item{padding:20px 22px;border:1px solid var(--line);border-radius:12px;background:#fff}
.meta-item span{display:block;font-size:11px;letter-spacing:.18em;color:var(--ink-700);text-transform:uppercase;font-weight:700}
.meta-item p{margin-top:8px;font-size:15px;color:var(--text-1);line-height:1.7}

/* ===== 战略合作伙伴 ===== */
.strategic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:12px}
/* 战略伙伴卡片：无 logo 时头部保留等高留白，保证同排卡片标题对齐 */
.strategic-grid .tcard-head{min-height:44px}
.sp-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;display:flex;flex-direction:column;align-items:flex-start;transition:all .25s ease}
.sp-card:hover{transform:translateY(-4px);box-shadow:0 20px 40px -20px rgba(11,61,145,.25);border-color:rgba(11,61,145,.2)}
.sp-logo{width:56px;height:56px;border-radius:12px;background:linear-gradient(135deg,#0B3D91 0%,#1D4ED8 100%);color:#fff;display:grid;place-items:center;font-size:24px;font-weight:700;margin-bottom:16px;overflow:hidden;box-shadow:0 4px 12px -4px rgba(11,61,145,.4)}
.sp-logo img{width:100%;height:100%;object-fit:contain;background:#fff;padding:4px}
.sp-card h3{font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.4;word-break:break-word}
.sp-desc{margin-top:10px;font-size:13px;color:var(--text-2);line-height:1.7;word-break:break-word}
@media (max-width:1080px){.strategic-grid{grid-template-columns:repeat(2,1fr);gap:24px}}
@media (max-width:640px){.strategic-grid{grid-template-columns:1fr;gap:20px}}

/* ===== 专家团队统一卡片 ===== */
.team-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.tcard{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;display:flex;flex-direction:column;transition:all .25s ease}
.tcard:hover{transform:translateY(-4px);box-shadow:0 20px 40px -20px rgba(11,61,145,.2);border-color:rgba(11,61,145,.2)}
.tcard-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tcard-name{font-size:22px;font-weight:700;color:var(--ink-900)}
.tcard-logo{max-height:44px;max-width:160px;width:auto;object-fit:contain;display:block}
.tcard-badge{display:inline-block;padding:3px 12px;border:1.5px solid var(--ink-700);color:var(--ink-700);border-radius:999px;font-size:12px;font-weight:600;background:transparent;white-space:nowrap}
.tcard-role{margin-top:10px;font-size:14px;color:var(--text-2);font-weight:500;line-height:1.6}
.tcard-tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:6px}
.tcard-tags span{padding:3px 10px;background:rgba(11,61,145,.08);color:var(--ink-700);border-radius:999px;font-size:12px;font-weight:500}
.tcard-bio{margin-top:16px;list-style:none;padding:0;display:flex;flex-direction:column;gap:8px;flex:1}
.tcard-bio li{padding-left:14px;position:relative;font-size:13px;color:var(--text-2);line-height:1.7}
.tcard-bio li::before{content:"";position:absolute;left:0;top:10px;width:5px;height:5px;border-radius:50%;background:var(--ink-700)}
.tcard-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}
.tcard-lang{margin-top:10px;font-size:12px;color:var(--text-3)}

/* ================================================================
   ==========  移动端适配（覆盖层，必须放最后）  ==========
   目标机型：iPhone SE/8/X~16 系列、华为 Mate/P/nova、荣耀、小米、OPPO/vivo
   断点：1024 平板横屏 · 860 平板竖屏/大屏手机 · 640 手机 · 430 大屏手机 · 375 小屏
   说明：本节位于文件末尾，用于覆盖前面同名规则（此前 .course-grid / .detail-meta
        的响应式规则被后方定义覆盖而失效，此处统一修正）
   ================================================================ */

html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
/* ⚠️ 不要在 html 上设 overflow-x:hidden —— iOS Safari / 微信内核下会让内部
   position:fixed 导航（含其 absolute 子菜单）定位错乱甚至被裁剪，是"手机点击
   菜单按钮没反应/菜单不出现"的经典原因。这里只在 body 上用 overflow-x:clip：
   它同样能裁掉横向溢出，但不会把 body 变成滚动容器，对 fixed 元素零影响。 */
body{max-width:100%;overflow-x:clip;min-height:100vh}
img,video,table{max-width:100%}
body.nav-locked{overflow:hidden}

/* ---------- 移动端汉堡按钮（桌面隐藏） ---------- */
.nav-toggle{
  display:none;width:46px;height:46px;flex:none;margin-left:auto;
  border:1px solid rgba(11,61,145,.16);background:#fff;border-radius:12px;
  cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  -webkit-tap-highlight-color:transparent;transition:border-color .2s ease,background .2s ease
}
.nav-toggle:hover{border-color:var(--ink-700)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-800);border-radius:2px;transition:transform .28s ease,opacity .2s ease}
.nav.open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.open .nav-toggle span:nth-child(2){opacity:0}
.nav.open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 平板横屏 ---------- */
@media (max-width:1024px){
  .hero{padding:140px 0 88px}
  .hero h1{font-size:50px}
  .page-hero{padding:140px 0 64px}
  .page-hero h1{font-size:44px}
  .section-head h2,.method .head-row h2{font-size:38px}
  .cta-band h2{font-size:44px}
  .steps{grid-template-columns:repeat(3,1fr);gap:18px}
  .steps::before{display:none}
  .foot{grid-template-columns:1fr 1fr;gap:34px}
}

/* ---------- 平板竖屏 / 大屏手机：启用抽屉式导航 ---------- */
@media (max-width:860px){
  .nav{padding-top:env(safe-area-inset-top,0px);width:100%}
  .nav-inner{height:auto;min-height:62px;padding:8px 24px;gap:12px}
  .brand{min-width:0;flex:1 1 auto}
  .brand img{height:30px}
  .brand-text{min-width:0}
  .brand-text strong{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:56vw}
  .brand-text span{font-size:10px;letter-spacing:.14em}
  .js .nav-toggle{display:flex}

  /* 抽屉菜单外观。显隐由 .js 与 .nav.open 控制，并有 footer.js 的内联样式兜底 */
  .menu{
    position:absolute;left:0;right:0;top:100%;z-index:2;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;
    border-bottom:1px solid var(--line);
    padding:6px 0 calc(16px + env(safe-area-inset-bottom,0px));
    max-height:calc(100vh - 90px);overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;
    box-shadow:0 26px 44px -26px rgba(11,61,145,.4)
  }
  /* 收起：用 display 切换。此前用 opacity/visibility，一旦被任何后续规则覆盖就彻底打不开 */
  .js .menu{display:none}
  .js .nav.open .menu{display:flex;animation:sv-nav-drop .24s ease both}
  .menu a{padding:15px 24px;font-size:16px;font-weight:500;border-bottom:1px solid rgba(11,61,145,.06)}
  .menu a::after{display:none}
  .menu a.active{color:var(--ink-800);font-weight:700;background:rgba(11,61,145,.05)}
  .menu a.btn-primary,.menu a.menu-cta{
    margin:14px 20px 4px;padding:14px 20px;border-bottom:none;
    justify-content:center;color:#fff;width:auto;text-align:center;display:flex
  }

  /* 首屏与页头留白收紧 */
  .hero{padding:112px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:40px;line-height:1.14}
  .hero p.lead{font-size:16px;margin-top:18px}
  .hero .cta-row{margin-top:28px;gap:12px}
  .hero .cta-row .btn{flex:1;justify-content:center;min-width:140px}
  .hero .meta{gap:22px;margin-top:24px;font-size:12.5px}
  .hero .meta b{font-size:17px}
  .hero-card{padding:26px 22px;border-radius:16px}
  .hero-card h3{font-size:19px}
  .spark-layer svg{width:420px;height:420px;right:-140px;top:-60px}

  .page-hero{padding:118px 0 52px}
  .page-hero h1{font-size:34px;margin-top:10px}
  .page-hero p{font-size:15.5px}

  .section-head{margin-bottom:40px}
  .section-head h2,.method .head-row h2{font-size:31px}
  .section-head p{font-size:15.5px;margin-top:14px}
  section{padding:76px 0}

  /* 网格统一降列（末尾定义，确保覆盖前方规则） */
  .prod-grid,.case-grid,.team-grid,.cta-inner,.team .lead,.method .head-row{grid-template-columns:1fr !important;gap:32px}
  .course-grid{grid-template-columns:repeat(2,1fr) !important;gap:18px}
  .news-featured{grid-template-columns:repeat(2,1fr) !important;gap:18px}
  .stats-grid{grid-template-columns:repeat(2,1fr) !important;gap:32px}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .partner-grid{grid-template-columns:repeat(3,1fr);padding-bottom:56px}
  .steps{grid-template-columns:repeat(2,1fr) !important;gap:16px}
  .steps::before{display:none}
  .team-cards{grid-template-columns:1fr;gap:18px}
  .strategic-grid{grid-template-columns:repeat(2,1fr) !important;gap:18px}
  .detail-meta{grid-template-columns:1fr !important;gap:14px}
  .foot{grid-template-columns:1fr 1fr;gap:32px}

  .stat .num{font-size:52px}
  .tc-card{padding:26px 22px}
  .course-cover{height:150px}
  .course-body{padding:20px}
  .sp-card{padding:20px}

  /* 图片可点按区域与自适应 */
  .logo-wall .cell{min-height:78px}

  /* 触控目标不小于 44px */
  .btn{padding:12px 20px;min-height:46px}
  .foot ul a{display:inline-block;padding:4px 0;min-height:24px}

  /* 表单：16px 防 iOS 自动放大 */
  .cta-contact .contact-form input,
  .cta-contact .contact-form select,
  .cta-contact .contact-form textarea,
  input[type=text],input[type=email],input[type=tel],input[type=search],select,textarea{font-size:16px}
  .cta-contact .contact-form textarea.full{height:120px;min-height:120px;max-height:120px}
}

/* 抽屉菜单入场动画（display 切换无法用 transition，改用 keyframes） */
@keyframes sv-nav-drop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

/* ---------- 手机 ---------- */
@media (max-width:640px){
  .container{padding:0 20px}
  .nav-inner{padding:8px 20px}

  .hero{padding:104px 0 56px}
  .hero h1{font-size:33px;letter-spacing:-.01em}
  .hero p.lead{font-size:15.5px;line-height:1.72}
  .hero .cta-row{gap:10px}
  .hero .cta-row .btn{flex:1 1 100%;min-width:0}
  .hero .meta{gap:18px;flex-wrap:wrap}
  .hero-card{padding:22px 18px}
  .hero-card li{font-size:13.5px}
  .hero-card .footer{flex-wrap:wrap;gap:8px;font-size:11.5px}

  .page-hero{padding:106px 0 44px}
  .page-hero h1{font-size:29px}
  .page-hero p{font-size:15px;line-height:1.7}

  .section-head h2,.method .head-row h2{font-size:26px}
  .section-head p{font-size:15px}
  .eyebrow{font-size:11px;letter-spacing:.18em}
  .eyebrow::before{width:20px}
  section{padding:64px 0}

  .course-grid,.news-featured,.strategic-grid,.steps{grid-template-columns:1fr !important;gap:16px}
  .stats-grid{grid-template-columns:1fr !important;gap:26px;text-align:center}
  .stat .num{font-size:44px}
  .logo-wall{grid-template-columns:repeat(2,1fr)}
  .partner-grid{grid-template-columns:repeat(2,1fr);gap:14px;padding-bottom:44px}
  .team .lead .ex{grid-template-columns:1fr 1fr}
  .foot{grid-template-columns:1fr;gap:30px}
  .foot .legal{flex-direction:column;gap:8px;text-align:left;margin-top:26px;padding-top:18px}

  .cta-band{padding:76px 0}
  .cta-band h2{font-size:27px}
  .cta-band p{font-size:15px}
  .cta-band .btn-row{gap:10px}
  .cta-band .btn-row .btn{flex:1 1 100%;justify-content:center}

  .cta-contact .contact-form{grid-template-columns:1fr;gap:12px}
  .cta-contact .contact-form .field-group.full,
  .cta-contact .contact-form textarea.full,
  .cta-contact .contact-form .submit-btn{grid-column:1 / -1}
  .cta-contact .contact-form textarea.full{height:112px;min-height:112px;max-height:112px}

  .news-list li{grid-template-columns:1fr;gap:6px;padding:16px 0}
  .news-list .cat{justify-self:start}
  .news-list h4,.news-list a{font-size:15.5px;line-height:1.5}

  .meta-item{padding:16px 16px}
  .meta-item p{font-size:14px}
  .course-cover{height:132px}
  .course-body{padding:18px}
  .course-body h3{font-size:16.5px}
  .tcard{padding:20px;border-radius:14px}
  .tcard-name{font-size:19px}
  .tcard-bio li{font-size:12.5px}
  .sp-card{border-radius:14px}
  .tcard-logo{max-height:38px;max-width:130px}

  /* 长文本与链接断行，防横向溢出 */
  h1,h2,h3,h4{word-break:break-word;overflow-wrap:anywhere}
  a,p,li,td,th{overflow-wrap:break-word}
}

/* ---------- 大屏手机（iPhone 14/15/16 Pro Max、华为 Mate 系列） ---------- */
@media (max-width:430px){
  .container{padding:0 16px}
  .nav-inner{padding:8px 18px}
  .hero{padding:98px 0 50px}
  .hero h1{font-size:30px}
  .page-hero{padding:100px 0 40px}
  .page-hero h1{font-size:26px}
  .section-head h2,.method .head-row h2{font-size:24px}
  .cta-band h2{font-size:25px}
  .brand-text strong{max-width:48vw}
  .nav-toggle{width:44px;height:44px}
}

/* ---------- 小屏（iPhone SE、华为 nova 小屏） ---------- */
@media (max-width:375px){
  .container{padding:0 14px}
  .nav-inner{padding:8px 14px}
  .hero{padding:92px 0 44px}
  .hero h1{font-size:27px}
  .hero .meta{gap:14px;font-size:12px}
  .page-hero h1{font-size:24px}
  .section-head h2,.method .head-row h2{font-size:22px}
  .cta-band h2{font-size:23px}
  .stat .num{font-size:38px}
  .menu a{padding:14px 18px;font-size:15.5px}
  section{padding:56px 0}
}

/* ---------- 横屏手机：压缩纵向留白 ---------- */
@media (max-height:520px) and (orientation:landscape){
  .hero{padding:96px 0 44px}
  .page-hero{padding:100px 0 40px}
  .js .menu{max-height:calc(100vh - 70px)}
}

/* ---------- 减少动效偏好 / 低端机性能 ---------- */
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1 !important;transform:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* ---------- 人机验证行：手机端改为上下堆叠（末尾定义，确保覆盖） ---------- */
@media (max-width:640px){
  .cta-contact .contact-form .guard-row{flex-direction:column;align-items:stretch;gap:8px}
  .cta-contact .contact-form .guard-row .guard-q{width:100%;min-width:0;height:44px}
  .cta-contact .form-err{font-size:12.5px;padding:11px 13px}
}