:root{
  --navy-900:#08243C; --navy-800:#0F3455; --navy-700:#16496F;
  --navy-600:#1E628F; --navy-500:#2A7CB4;
  --cyan:#3FB8E8; --cyan-dk:#1E7FAE;
  --teal:#12A67A; --teal-dk:#0B7A58; --teal-lt:#E4F5EF;
  --amber:#E8961E; --amber-dk:#B26D0C;
  --red:#D9503F;
  --ink:#14212E; --ink2:#3E5266; --muted:#6B7C91;
  --line:#E2E8EF; --line2:#EEF2F7;
  --bg:#FFFFFF; --bg-soft:#F5F8FB; --bg-deep:#0A2338;
  --r:10px; --r-lg:16px;
  --sh:0 2px 12px rgba(16,42,66,.06);
  --sh-l:0 14px 40px rgba(16,42,66,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:78px;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:15.5px;line-height:1.78;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
h1,h2,h3,h4{line-height:1.28;letter-spacing:-.01em}
strong{font-weight:800}

/* ===== 顶栏 ===== */
.kh-top{background:var(--navy-900);color:rgba(255,255,255,.72);font-size:12.5px}
.kh-top-in{display:flex;flex-wrap:wrap;gap:20px;align-items:center;padding:8px 24px}
.kh-top-i b{color:#fff;font-weight:800}
.kh-top-in .kh-top-i:last-child{margin-left:auto;color:var(--cyan)}

/* ===== 导航 ===== */
.kh-head{position:sticky;top:0;z-index:60;background:#fff;box-shadow:0 1px 0 var(--line),0 4px 18px rgba(16,42,66,.05)}
.kh-nav-in{display:flex;align-items:center;gap:22px;height:70px}
.kh-logo{display:flex;align-items:center;gap:11px;flex:none}
.kh-logo-badge{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;flex:none;
  background:linear-gradient(140deg,var(--navy-600),var(--navy-800));
  color:#fff;font-size:21px;font-weight:900;letter-spacing:-.03em;
  box-shadow:0 3px 10px rgba(15,52,85,.22);
}
.kh-logo-tx b{display:block;font-size:16.5px;font-weight:900;color:var(--navy-800);line-height:1.2}
.kh-logo-tx small{display:block;font-size:11px;color:var(--muted);font-weight:700;letter-spacing:.02em;margin-top:2px}
.kh-nav{display:flex;align-items:center;gap:2px;margin-left:auto;flex-wrap:wrap}
.kh-nav a{
  font-size:13.5px;font-weight:700;color:var(--ink2);padding:9px 11px;border-radius:7px;
  transition:.2s;white-space:nowrap;
}
.kh-nav a:hover{color:var(--navy-600);background:var(--bg-soft)}
.kh-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;font-weight:800;border-radius:8px;
  transition:.22s;border:0;cursor:pointer;font-family:inherit;font-size:14px;padding:11px 20px;line-height:1.4}
.kh-btn-primary{background:var(--navy-700);color:#fff;box-shadow:0 3px 10px rgba(15,52,85,.18)}
.kh-btn-primary:hover{background:var(--navy-800);transform:translateY(-1px);box-shadow:0 6px 18px rgba(15,52,85,.26)}
.kh-btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.3)}
.kh-btn-ghost:hover{background:rgba(255,255,255,.2)}
.kh-btn-line{background:#fff;color:var(--navy-700);border:1.5px solid var(--line)}
.kh-btn-line:hover{border-color:var(--navy-600);color:var(--navy-600)}
.kh-btn-lg{font-size:15.5px;padding:14px 28px}
.kh-btn-sm{font-size:13px;padding:8px 15px}
.kh-btn-block{width:100%}
.kh-nav-cta{flex:none}
.kh-burger{display:none;width:42px;height:42px;border:0;background:var(--bg-soft);border-radius:9px;
  cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.kh-burger span{display:block;width:19px;height:2px;background:var(--navy-700);border-radius:2px;transition:.25s}
.kh-burger.on span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.kh-burger.on span:nth-child(2){opacity:0}
.kh-burger.on span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.kh-mnav{display:none;background:#fff;border-top:1px solid var(--line);padding:10px 24px 18px}
.kh-mnav.on{display:block}
.kh-mnav a{display:block;padding:10px 0;font-size:14.5px;font-weight:700;color:var(--ink2);border-bottom:1px solid var(--line2)}
.kh-mnav-tel{background:var(--navy-700)!important;color:#fff!important;text-align:center;border-radius:8px;
  margin-top:12px;border:0!important;font-size:16px!important;padding:13px!important}

/* ===== Hero ===== */
.kh-hero{background:linear-gradient(135deg,var(--navy-900) 0%,var(--navy-800) 48%,#16496F 100%);
  position:relative;overflow:hidden;padding:60px 0 70px}
.kh-hero::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(900px 400px at 80% 0%,rgba(63,184,232,.22),transparent 62%)}
.kh-hero-in{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.kh-kicker{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.1em;color:var(--cyan);
  background:rgba(63,184,232,.13);border:1px solid rgba(63,184,232,.3);
  padding:6px 14px;border-radius:999px;margin-bottom:20px}
.kh-hero h1{font-size:clamp(30px,4.6vw,52px);color:#fff;margin-bottom:20px;font-weight:900;letter-spacing:-.02em}
.kh-lead{font-size:16px;color:var(--ink2);line-height:1.85}
.kh-hero .kh-lead{color:rgba(255,255,255,.8);max-width:660px}
.kh-hero .kh-lead strong{color:#fff}
.kh-tags{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 26px}
.kh-tags li{font-size:12.5px;font-weight:700;color:rgba(255,255,255,.9);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);padding:5px 13px;border-radius:999px}
.kh-hero-acts{display:flex;flex-wrap:wrap;gap:12px}
.kh-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.16);border-radius:var(--r);overflow:hidden;margin-top:38px}
.kh-stats div{background:rgba(6,26,44,.5);padding:15px 12px;text-align:center}
.kh-stats b{display:block;font-size:21px;color:#fff;line-height:1.2;margin-bottom:3px}
.kh-stats span{font-size:11.5px;color:rgba(255,255,255,.6);font-weight:700}
.kh-art-svg{width:100%;height:auto;filter:drop-shadow(0 22px 46px rgba(0,0,0,.32))}

/* ===== 区块 ===== */
.kh-sec{padding:78px 0}
.kh-sec-soft{background:var(--bg-soft)}
.kh-sec-head{margin-bottom:44px;max-width:860px}
.kh-sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kh-eyebrow{font-size:12.5px;font-weight:900;letter-spacing:.13em;color:var(--navy-500);margin-bottom:12px}
.kh-h2{font-size:clamp(25px,3.2vw,37px);color:var(--navy-800);margin-bottom:16px}
.kh-h3{font-size:21px;color:var(--navy-800);margin-bottom:14px}

/* ===== 关于 ===== */
.kh-about-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:44px;align-items:start;margin-bottom:44px}
.kh-about-tx h3{font-size:20px;color:var(--navy-800);margin-bottom:14px}
.kh-about-tx>p{color:var(--ink2);line-height:1.85;margin-bottom:20px}
.kh-check li{display:flex;gap:11px;margin-bottom:12px;font-size:14.5px;color:var(--ink2);line-height:1.7}
.kh-check svg{width:18px;height:18px;fill:var(--teal);flex:none;margin-top:3px}
.kh-check strong{color:var(--navy-800)}
.kh-about-cta{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.kh-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.kh-facts div{background:#fff;padding:17px 12px;text-align:center}
.kh-facts b{display:block;font-size:22px;color:var(--navy-700);line-height:1.2;margin-bottom:3px}
.kh-facts span{font-size:11.5px;color:var(--muted);font-weight:700}
.kh-about-note{margin-top:20px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--teal);
  border-radius:var(--r);padding:18px 20px}
.kh-about-note b{display:block;font-size:14.5px;color:var(--navy-800);margin-bottom:6px}
.kh-about-note p{font-size:13.5px;color:var(--ink2);line-height:1.75;margin:0}
.kh-adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.kh-adv{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px 22px;transition:.25s;position:relative}
.kh-adv:hover{transform:translateY(-4px);box-shadow:var(--sh-l);border-color:var(--cyan)}
.kh-adv-i{display:block;font-size:13px;font-weight:900;color:var(--cyan);letter-spacing:.08em;margin-bottom:10px}
.kh-adv h3{font-size:17px;color:var(--navy-800);margin-bottom:8px}
.kh-adv p{font-size:14px;color:var(--ink2);line-height:1.75;margin:0}

/* ===== 服务 ===== */
.kh-svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.kh-svc{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 24px;
  display:flex;flex-direction:column;transition:.26s}
.kh-svc:hover{transform:translateY(-5px);box-shadow:var(--sh-l);border-color:var(--cyan)}
.kh-svc-ic{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(140deg,#E4F0F8,#DCF0E9)}
.kh-svc-ic svg{width:26px;height:26px;fill:var(--navy-600)}
.kh-svc h3{font-size:18.5px;color:var(--navy-800);margin-bottom:9px}
.kh-svc>p{font-size:14px;color:var(--ink2);line-height:1.75;margin-bottom:14px}
.kh-svc-ls{margin-bottom:18px;flex:1}
.kh-svc-ls li{display:flex;gap:8px;font-size:13.5px;color:var(--ink2);line-height:1.65;margin-bottom:7px}
.kh-svc-ls svg{width:15px;height:15px;fill:var(--teal);flex:none;margin-top:3px}
.kh-lnk{font-size:14px;font-weight:800;color:var(--navy-600);display:inline-flex;align-items:center;gap:6px;margin-top:auto}
.kh-lnk svg{width:15px;height:15px;fill:currentColor;transition:.25s}
.kh-lnk:hover svg{transform:translateX(4px)}

/* ===== 机型 ===== */
.kh-eng-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-bottom:44px}
.kh-eng{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 26px 24px;transition:.26s}
.kh-eng:hover{box-shadow:var(--sh-l);border-color:var(--cyan)}
.kh-eng-hd{margin-bottom:14px}
.kh-eng-hd h3{font-size:20px;color:var(--navy-800);display:inline-block;margin-right:10px}
.kh-eng-en{font-size:12px;font-weight:800;color:var(--muted);letter-spacing:.05em;text-transform:uppercase}
.kh-eng-models{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.kh-model{font-size:12.5px;font-weight:800;color:var(--navy-700);background:var(--bg-soft);
  border:1px solid var(--line);padding:4px 11px;border-radius:6px;font-family:ui-monospace,Consolas,monospace}
.kh-eng:hover .kh-model{background:#EAF3FA;border-color:#C6DEEE}
.kh-kv{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;font-size:13.5px;margin-bottom:16px;
  padding:14px 16px;background:var(--bg-soft);border-radius:8px}
.kh-kv dt{color:var(--muted);white-space:nowrap}
.kh-kv dd{margin:0;color:var(--navy-700);font-weight:800;text-align:right}
.kh-kv-tight{background:transparent;padding:0;gap:6px 14px}
.kh-kv-tight dt{font-size:12.5px}
.kh-kv-tight dd{font-size:12.5px;text-align:left;font-weight:700;color:var(--ink2)}
.kh-eng-pts{margin-bottom:14px}
.kh-eng-pts li{display:flex;gap:9px;font-size:13.5px;color:var(--ink2);line-height:1.7;margin-bottom:8px}
.kh-eng-pts svg{width:15px;height:15px;fill:var(--teal);flex:none;margin-top:3px}
.kh-eng-apps{display:flex;flex-wrap:wrap;gap:6px;align-items:center;
  padding-top:13px;border-top:1px solid var(--line2)}
.kh-eng-apps span{font-size:11.5px;font-weight:800;color:var(--muted);margin-right:4px}
.kh-eng-apps b{font-size:11.5px;font-weight:700;color:var(--teal-dk);background:var(--teal-lt);
  padding:3px 9px;border-radius:5px}

/* ===== 表格 ===== */
.kh-table-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px 22px;margin-top:8px}
.kh-tbl-note{font-size:12.5px;color:var(--muted);line-height:1.7;margin-bottom:16px}
.kh-table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line2);border-radius:8px}
.kh-table-tall{max-height:640px;overflow-y:auto}
.kh-table{width:100%;border-collapse:collapse;font-size:13px;min-width:760px}
.kh-table thead th{background:var(--navy-800);color:#fff;font-weight:800;text-align:left;
  padding:11px 13px;white-space:nowrap;font-size:12.5px;position:sticky;top:0;z-index:2}
.kh-table td{padding:10px 13px;border-bottom:1px solid var(--line2);vertical-align:top;color:var(--ink2);line-height:1.65}
.kh-table tbody tr:hover{background:var(--bg-soft)}
.kh-table td:first-child{font-weight:800;color:var(--navy-800);white-space:nowrap}
.kh-table .kh-num{white-space:nowrap;font-weight:700;color:var(--navy-700)}
.kh-fault-cn{color:var(--red)!important;font-weight:700;white-space:nowrap}
.kh-table-fault td:nth-child(3){min-width:220px}
.kh-table-fault td:nth-child(4){min-width:260px;color:var(--ink)}

/* ===== 配件 ===== */
.kh-fil-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-bottom:40px}
.kh-fil{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px;transition:.26s}
.kh-fil:hover{box-shadow:var(--sh-l);border-color:var(--teal)}
.kh-fil-hd{margin-bottom:12px;padding-bottom:12px;border-bottom:2px solid var(--bg-soft)}
.kh-fil-hd h3{font-size:19px;color:var(--navy-800);display:inline-block;margin-right:10px}
.kh-fil-en{font-size:12px;font-weight:800;color:var(--muted);letter-spacing:.04em;text-transform:uppercase}
.kh-fil-cat{display:inline-block;margin-top:8px;font-size:11.5px;font-weight:800;color:var(--teal-dk);
  background:var(--teal-lt);padding:3px 10px;border-radius:999px}
.kh-fil-int{font-size:13.5px;color:var(--ink2);background:#FFF6E8;border:1px solid #F5DFB4;
  border-radius:7px;padding:9px 13px;margin-bottom:16px}
.kh-fil-int b{color:var(--amber-dk);font-weight:800}
.kh-fil-why{margin-bottom:14px}
.kh-fil-why>b{display:block;font-size:13.5px;color:var(--navy-800);margin-bottom:8px}
.kh-fil-why li{display:flex;gap:8px;font-size:13.5px;color:var(--ink2);line-height:1.68;margin-bottom:7px}
.kh-fil-why svg{width:15px;height:15px;fill:var(--teal);flex:none;margin-top:3px}
.kh-fil-tip{background:var(--bg-soft);border-left:3px solid var(--cyan);border-radius:6px;padding:12px 14px}
.kh-fil-tip b{display:block;font-size:12.5px;color:var(--navy-600);margin-bottom:5px;letter-spacing:.03em}
.kh-fil-tip p{font-size:13.5px;color:var(--ink2);line-height:1.72;margin:0}

/* ===== 四步排查 ===== */
.kh-howto{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 26px;margin-bottom:36px}
.kh-howto-hd{display:flex;align-items:center;gap:16px;margin-bottom:20px;padding-bottom:18px;border-bottom:1px solid var(--line2)}
.kh-howto-badge{width:52px;height:52px;border-radius:14px;flex:none;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--navy-600),var(--navy-800));color:#fff;font-size:14px;font-weight:900}
.kh-howto-hd h3{font-size:19px;color:var(--navy-800);margin-bottom:4px}
.kh-howto-hd p{font-size:14px;color:var(--muted);margin:0}
.kh-howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.kh-howto-steps li{display:flex;gap:12px}
.kh-howto-steps .n{width:30px;height:30px;border-radius:9px;flex:none;display:grid;place-items:center;
  background:var(--teal-lt);color:var(--teal-dk);font-weight:900;font-size:14px}
.kh-howto-steps b{display:block;font-size:15px;color:var(--navy-800);margin-bottom:5px}
.kh-howto-steps p{font-size:13.5px;color:var(--ink2);line-height:1.7;margin:0}

/* ===== 保养 ===== */
.kh-mnt-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.kh-mnt{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:.26s}
.kh-mnt:hover{box-shadow:var(--sh-l)}
.kh-mnt-hd{padding:20px 22px;background:linear-gradient(120deg,var(--navy-800),var(--navy-600));color:#fff}
.kh-mnt:nth-child(2) .kh-mnt-hd{background:linear-gradient(120deg,var(--teal-dk),var(--teal))}
.kh-mnt:nth-child(3) .kh-mnt-hd{background:linear-gradient(120deg,var(--amber-dk),var(--amber))}
.kh-mnt-lv{display:block;font-size:17px;font-weight:800;margin-bottom:5px}
.kh-mnt-h{font-size:12.5px;opacity:.82;font-weight:700}
.kh-mnt-ls{padding:20px 22px 22px;counter-reset:m}
.kh-mnt-ls li{position:relative;padding-left:26px;font-size:13.5px;color:var(--ink2);line-height:1.68;margin-bottom:9px;counter-increment:m}
.kh-mnt-ls li::before{content:counter(m);position:absolute;left:0;top:2px;width:18px;height:18px;border-radius:5px;
  background:var(--bg-soft);color:var(--navy-600);font-size:11px;font-weight:900;display:grid;place-items:center}

/* ===== 案例 ===== */
.kh-case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.kh-case{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px 24px 20px;transition:.26s}
.kh-case:hover{transform:translateY(-4px);box-shadow:var(--sh-l);border-color:var(--cyan)}
.kh-case-hd{margin-bottom:12px}
.kh-case-cat{display:inline-block;font-size:11px;font-weight:900;letter-spacing:.08em;color:var(--cyan);
  background:#E4F2F9;padding:3px 9px;border-radius:4px;margin-bottom:9px}
.kh-case h3{font-size:17.5px;color:var(--navy-800);margin-bottom:9px}
.kh-case>p{font-size:14px;color:var(--ink2);line-height:1.75;margin-bottom:14px}
.kh-case-meta{display:flex;gap:18px;flex-wrap:wrap;padding-top:13px;border-top:1px solid var(--line2);
  font-size:12.5px;color:var(--muted)}
.kh-case-meta b{color:var(--navy-700)}

/* ===== 区域 ===== */
.kh-region-grp{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 24px;margin-bottom:18px}
.kh-region-grp h3{font-size:18px;color:var(--navy-800);margin-bottom:16px;
  padding-bottom:12px;border-bottom:2px solid var(--bg-soft)}
.kh-region-grp h3 span{font-size:12.5px;font-weight:800;color:var(--teal-dk);background:var(--teal-lt);
  padding:3px 10px;border-radius:999px;margin-left:8px}
.kh-city-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px}
.kh-city{font-size:13px;font-weight:700;color:var(--ink2);background:var(--bg-soft);border:1px solid var(--line2);
  padding:7px 11px;border-radius:7px;text-align:center}

/* ===== FAQ ===== */
.kh-faq{max-width:900px;margin:0 auto}
.kh-faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r);margin-bottom:12px;overflow:hidden;transition:.22s}
.kh-faq-item[open]{border-color:var(--cyan);box-shadow:var(--sh)}
.kh-faq-item summary{display:flex;align-items:center;gap:14px;padding:17px 20px;cursor:pointer;list-style:none}
.kh-faq-item summary::-webkit-details-marker{display:none}
.kh-faq-q{flex:1;font-size:15.5px;font-weight:800;color:var(--navy-800);line-height:1.55}
.kh-faq-ic{width:22px;height:22px;flex:none;position:relative}
.kh-faq-ic::before,.kh-faq-ic::after{content:"";position:absolute;background:var(--navy-600);border-radius:2px;
  transition:.25s;left:50%;top:50%;transform:translate(-50%,-50%)}
.kh-faq-ic::before{width:13px;height:2px}
.kh-faq-ic::after{width:2px;height:13px}
.kh-faq-item[open] .kh-faq-ic::after{transform:translate(-50%,-50%) scaleY(0)}
.kh-faq-a{padding:0 20px 20px;font-size:14.5px;color:var(--ink2);line-height:1.85;
  border-top:1px solid var(--line2);padding-top:16px;margin-top:-1px}

/* ===== 联系 ===== */
.kh-contact{display:grid;grid-template-columns:1fr 1.05fr;gap:40px;align-items:start}
.kh-cbox{display:flex;gap:15px;background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:19px 20px;margin-bottom:13px}
.kh-cbox-ic{width:44px;height:44px;border-radius:11px;flex:none;display:grid;place-items:center;
  background:linear-gradient(140deg,#E4F0F8,#DCF0E9)}
.kh-cbox-ic svg{width:22px;height:22px;fill:var(--navy-600)}
.kh-cbox-lb{display:block;font-size:12px;font-weight:800;color:var(--muted);letter-spacing:.04em;margin-bottom:5px}
.kh-cbox b{display:block;font-size:16px;font-weight:800;color:var(--navy-800);line-height:1.5}
.kh-cbox-big{font-size:20px!important;color:var(--navy-700)!important}
.kh-cbox-sub{display:block;font-size:12.5px;color:var(--muted);margin-top:5px}
.kh-note{background:#FFF6E8;border:1px solid #F5DFB4;border-radius:var(--r);padding:17px 19px;margin-top:6px}
.kh-note b{display:block;font-size:14.5px;color:var(--amber-dk);margin-bottom:6px}
.kh-note p{font-size:13.5px;color:var(--ink2);line-height:1.75;margin:0}
.kh-note a{color:var(--navy-700);font-weight:800}
.kh-form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 28px}
.kh-form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.kh-field{margin-bottom:16px}
.kh-field label{display:block;font-size:13.5px;font-weight:800;color:var(--navy-800);margin-bottom:7px}
.kh-field label span{color:var(--red)}
.kh-field input,.kh-field select,.kh-field textarea{
  width:100%;font-family:inherit;font-size:14.5px;color:var(--ink);
  padding:11px 14px;border:1px solid var(--line);border-radius:8px;background:#fff;transition:.2s;
}
.kh-field input:focus,.kh-field select:focus,.kh-field textarea:focus{
  outline:0;border-color:var(--navy-500);box-shadow:0 0 0 3px rgba(42,124,180,.12)}
.kh-field textarea{resize:vertical;min-height:100px}
.kh-field input.err,.kh-field select.err{border-color:var(--red);background:#FEF4F3}
.kh-form-note{font-size:12.5px;color:var(--muted);margin-top:11px;text-align:center}

/* ===== CTA ===== */
.kh-cta{background:linear-gradient(120deg,var(--navy-900),var(--navy-700) 60%,#1C5A88);position:relative;overflow:hidden}
.kh-cta::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(700px 300px at 85% 50%,rgba(63,184,232,.2),transparent 60%)}
.kh-cta-in{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;
  gap:32px;padding:48px 24px;flex-wrap:wrap}
.kh-cta h2{font-size:clamp(22px,2.8vw,31px);color:#fff;margin-bottom:9px}
.kh-cta p{font-size:15px;color:rgba(255,255,255,.75);margin:0;max-width:640px}
.kh-cta-acts{display:flex;gap:12px;flex-wrap:wrap}

/* ===== Footer ===== */
.kh-foot{background:var(--bg-deep);color:rgba(255,255,255,.62);padding:56px 0 0;font-size:14px}
.kh-foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:38px}
.kh-logo-light .kh-logo-tx b{color:#fff}
.kh-logo-light .kh-logo-tx small{color:rgba(255,255,255,.5)}
.kh-foot-brand p{font-size:13.5px;line-height:1.8;margin:16px 0;max-width:420px}
.kh-foot-contact span{display:block;font-size:13px;margin-bottom:6px;line-height:1.6}
.kh-foot-contact b{color:#fff;font-weight:800}
.kh-foot-col h4{font-size:14.5px;color:#fff;margin-bottom:15px;font-weight:800}
.kh-foot-col a{display:block;font-size:13.5px;color:rgba(255,255,255,.62);padding:5px 0;transition:.2s}
.kh-foot-col a:hover{color:var(--cyan);transform:translateX(3px)}
.kh-foot-col p{font-size:13.5px;line-height:1.8}
.kh-foot-links{border-top:1px solid rgba(255,255,255,.1);padding:24px 0}
.kh-foot-links h4{font-size:13.5px;color:rgba(255,255,255,.5);margin-bottom:12px;font-weight:800;letter-spacing:.05em}
.kh-foot-links>div{display:flex;flex-wrap:wrap;gap:8px}
.kh-foot-links a{font-size:12.5px;color:rgba(255,255,255,.6);background:rgba(255,255,255,.06);
  padding:5px 12px;border-radius:6px;transition:.2s;border:1px solid rgba(255,255,255,.08)}
.kh-foot-links a:hover{color:var(--cyan);border-color:rgba(63,184,232,.35);background:rgba(63,184,232,.1)}
.kh-foot-btm{border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px}
.kh-foot-btm p{font-size:12.5px;color:rgba(255,255,255,.42);line-height:1.7;margin-bottom:5px}

/* ===== 动效 ===== */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}
@media (max-width:1080px){
  .kh-svc-grid{grid-template-columns:repeat(2,1fr)}
  .kh-eng-grid,.kh-fil-grid{grid-template-columns:1fr}
  .kh-howto-steps{grid-template-columns:repeat(2,1fr)}
  .kh-foot-grid{grid-template-columns:1fr 1fr}
  .kh-nav{display:none}
  .kh-burger{display:flex}
  .kh-hero-in{grid-template-columns:1fr;gap:36px}
  .kh-hero-art{max-width:520px;margin:0 auto}
}
@media (max-width:820px){
  .kh-about-grid,.kh-contact{grid-template-columns:1fr;gap:32px}
  .kh-adv-grid,.kh-case-grid,.kh-mnt-grid{grid-template-columns:1fr}
  .kh-hide-sm{display:none}
  .kh-stats{grid-template-columns:repeat(2,1fr)}
  .kh-sec{padding:58px 0}
  .kh-form-row{grid-template-columns:1fr}
  .kh-facts{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  .wrap{padding:0 18px}
  .kh-top-in{gap:12px;font-size:11.5px}
  .kh-hero{padding:42px 0 50px}
  .kh-howto-steps{grid-template-columns:1fr}
  .kh-foot-grid{grid-template-columns:1fr;gap:26px}
  .kh-cta-in{padding:38px 18px}
  .kh-kv{grid-template-columns:1fr;gap:3px}
  .kh-kv dd{text-align:left}
  .kh-kv-tight dd{text-align:left}
}