@charset "UTF-8";
/* ==========================================================================
   烟台深度求知人工智能科技有限公司 — yt.fde.sd.cn
   视觉基准：欧美工业集团风（Donaldson / Grundfos / Parker）
   硬约束：纯白底 · 深石墨字 · 1px 描边 · 3px 圆角 · 无渐变 · 无发光 · 无 emoji
   品牌色只落在：按钮、关键数字、细线标记
   ========================================================================== */

:root{
  --ink:        #1a1d21;   /* 主文字 */
  --ink-2:      #3d434a;   /* 次级文字 */
  --ink-3:      #6b727b;   /* 辅助文字 */
  --ink-4:      #949aa2;   /* 极弱 */
  --rule:       #d8dce1;   /* 1px 描边 */
  --rule-2:     #eceff2;   /* 更弱的分隔线 */
  --bg:         #ffffff;
  --bg-2:       #f6f7f8;   /* 浅灰分区 */
  --bg-3:       #eef0f2;
  --brand:      #14508c;   /* 深蓝，只用于按钮/数字/标记 */
  --brand-dk:   #0e3f70;
  --brand-lt:   #e8eff6;
  --ok:         #2f6b46;
  --focus:      #14508c;

  --wrap:       1240px;
  --gut:        28px;
  --r:          3px;
  --hdr-h:      68px;
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font:400 16px/1.75 "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;display:block;border:0}

a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

h1,h2,h3,h4,p,ul,ol,figure,dl,dd,table{margin:0}
ul,ol{padding:0;list-style:none}

table{border-collapse:collapse;width:100%}

::selection{background:var(--brand);color:#fff}

:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:2px}

.skip{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--ink);color:#fff;padding:10px 16px;font-size:14px;
}
.skip:focus{left:8px;top:8px}

/* ---------- 版心 ---------- */
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.wrap--narrow{max-width:940px}

/* ---------- 顶栏 ---------- */
.topbar{
  background:var(--ink);color:#cfd4da;
  font-size:13px;line-height:1.6;
  border-bottom:1px solid #000;
}
.topbar .wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;min-height:38px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px;
}
.topbar__co{color:#e8ebee;letter-spacing:.02em}
.topbar__meta{display:flex;gap:22px;align-items:center;flex-wrap:wrap}
.topbar__meta a{color:#cfd4da}
.topbar__meta a:hover{color:#fff}
.topbar__tel{color:#fff;font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:.04em}
.topbar__tel:hover{color:#fff}

/* ---------- 头部 ---------- */
.hdr{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--rule);
  backdrop-filter:saturate(140%) blur(6px);
}
.hdr .wrap{display:flex;align-items:center;gap:26px;min-height:var(--hdr-h)}

.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.logo:hover{text-decoration:none}
.logo__mark{flex:0 0 auto}
.logo__tx{display:flex;flex-direction:column;line-height:1.15}
.logo__cn{font-size:17px;font-weight:700;letter-spacing:.06em;color:var(--ink)}
.logo__en{font-size:10.5px;font-weight:600;letter-spacing:.14em;color:var(--ink-3);text-transform:uppercase}

.nav{margin-left:auto}
.nav ul{display:flex;align-items:center;gap:2px}
.nav a{
  display:block;padding:9px 13px;
  font-size:15px;color:var(--ink-2);font-weight:500;
  border-radius:var(--r);
}
.nav a:hover{color:var(--ink);background:var(--bg-2);text-decoration:none}
.nav a[aria-current="page"]{color:var(--brand);font-weight:600;box-shadow:inset 0 -2px 0 var(--brand)}

.hdr__cta{display:flex;align-items:center;gap:10px;flex:0 0 auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid var(--brand);border-radius:var(--r);
  background:var(--brand);color:#fff;
  cursor:pointer;white-space:nowrap;
  transition:background .15s ease,border-color .15s ease;
}
.btn:hover{background:var(--brand-dk);border-color:var(--brand-dk);color:#fff;text-decoration:none}
.btn--ghost{background:transparent;color:var(--brand);border-color:var(--rule)}
.btn--ghost:hover{background:var(--brand-lt);border-color:var(--brand);color:var(--brand-dk)}
.btn--light{background:#fff;color:var(--ink);border-color:#fff}
.btn--light:hover{background:#e9ebee;color:var(--ink);border-color:#e9ebee}
.btn--line{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn--line:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.8);color:#fff}
.btn--sm{padding:8px 15px;font-size:14px}
.btn__num{font-variant-numeric:tabular-nums;letter-spacing:.03em}

/* ---------- 通用区块 ---------- */
.sec{padding:78px 0;border-bottom:1px solid var(--rule-2)}
.sec--tight{padding:56px 0}
.sec--alt{background:var(--bg-2)}
.sec--dark{background:var(--ink);color:#e6e9ec}
.sec--dark .sec__sub,.sec--dark .lead{color:#b6bcc3}

.sec__hd{margin-bottom:44px;max-width:820px}
.sec__eyebrow{
  display:flex;align-items:center;gap:10px;
  font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--brand);
  text-transform:uppercase;margin-bottom:14px;
}
.sec__eyebrow::before{content:"";width:26px;height:2px;background:var(--brand);flex:0 0 auto}
.sec--dark .sec__eyebrow{color:#8fb4d8}
.sec--dark .sec__eyebrow::before{background:#8fb4d8}

.sec__title{
  font-size:34px;line-height:1.32;font-weight:700;letter-spacing:.01em;color:var(--ink);
}
.sec--dark .sec__title{color:#fff}
.sec__sub{margin-top:16px;font-size:16.5px;line-height:1.85;color:var(--ink-2)}
.sec__hd--row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none;
  flex-wrap:wrap;
}
.sec__hd--row .sec__hd{margin-bottom:0;max-width:760px}
.sec__hd--row > a{font-size:15px;font-weight:600;white-space:nowrap;padding-bottom:4px}

.lead{font-size:17px;line-height:1.9;color:var(--ink-2)}

/* ---------- HERO ---------- */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden}
.hero__bg{position:absolute;inset:0}
.hero__bg img{width:100%;height:100%;object-fit:cover}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(11,17,24,.94) 0%,rgba(11,17,24,.86) 42%,rgba(11,17,24,.42) 100%);
}
.hero__in{position:relative;z-index:2;padding:96px 0 88px}
.hero__grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:60px;align-items:end}
.hero__grid > *{min-width:0}

.hero__kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:700;letter-spacing:.15em;color:#a9c6e2;
  border:1px solid rgba(255,255,255,.26);border-radius:2px;
  padding:6px 12px;margin-bottom:26px;
}
.hero__kicker::before{content:"";width:6px;height:6px;background:#6fa3d4;flex:0 0 auto}

.hero__title{
  font-size:52px;line-height:1.18;font-weight:700;letter-spacing:.005em;color:#fff;
  max-width:15em;
}
.hero__title em{font-style:normal;color:#7fb0dd;border-bottom:3px solid rgba(127,176,221,.45);padding-bottom:2px}
.hero__desc{
  margin-top:24px;max-width:640px;font-size:17.5px;line-height:1.9;color:#c5ccd4;
}
.hero__actions{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap}

/* 规格表式信息块 —— 去 AI 味的关键：不用图标气泡，用工程参数表。
   必须是不透明底：压在 hero 实拍图上时，半透明会让亮部机柜透出来，
   表格右列的白字直接糊掉。 */
.spec{
  border:1px solid rgba(255,255,255,.22);border-radius:var(--r);
  background:#141a21;
  overflow:hidden;
  box-shadow:0 18px 44px rgba(0,0,0,.32);
}
.spec__row{
  display:flex;justify-content:space-between;gap:16px;align-items:baseline;
  padding:13px 16px;border-bottom:1px solid rgba(255,255,255,.13);
  font-size:14px;min-width:0;
}
.spec__row:last-child{border-bottom:0}
.spec__k{color:#98a1ab;flex:0 0 auto;letter-spacing:.04em}
.spec__v{color:#fff;font-weight:600;text-align:right;font-variant-numeric:tabular-nums;min-width:0;flex:0 1 auto;word-break:break-word}

.hero__strip{
  position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.16);
  background:rgba(0,0,0,.28);
}
.hero__strip ul{display:grid;grid-template-columns:repeat(4,1fr)}
.hero__strip li{
  padding:18px 22px;border-right:1px solid rgba(255,255,255,.12);
}
.hero__strip li:last-child{border-right:0}
.hero__strip b{display:block;font-size:22px;font-weight:700;color:#fff;letter-spacing:.01em;font-variant-numeric:tabular-nums}
.hero__strip span{display:block;margin-top:4px;font-size:13px;color:#9aa3ac}

/* ---------- 三栏服务（首页主结构） ---------- */
.svc{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1px solid var(--rule);border-radius:var(--r);overflow:hidden;background:#fff}
.svc__col{border-right:1px solid var(--rule);display:flex;flex-direction:column}
.svc__col:last-child{border-right:0}
.svc__shot{position:relative;aspect-ratio:16/10;background:var(--bg-3);overflow:hidden}
.svc__shot img{width:100%;height:100%;object-fit:cover}
.svc__shot::after{
  content:"";position:absolute;left:0;top:0;width:44px;height:3px;background:var(--brand);
}
.svc__no{
  position:absolute;right:0;bottom:0;
  background:var(--ink);color:#fff;font-size:12px;font-weight:700;letter-spacing:.12em;
  padding:7px 14px;border-top-left-radius:var(--r);
  font-variant-numeric:tabular-nums;
}
.svc__body{padding:26px 24px 28px;display:flex;flex-direction:column;flex:1}
.svc__t{font-size:20px;font-weight:700;letter-spacing:.01em;color:var(--ink);line-height:1.4}
.svc__d{margin-top:12px;font-size:15px;line-height:1.85;color:var(--ink-2)}
.svc__list{margin-top:20px;border-top:1px solid var(--rule-2)}
.svc__list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:9px 0;border-bottom:1px solid var(--rule-2);
  font-size:14.5px;line-height:1.65;color:var(--ink-2);
}
.svc__list li::before{
  content:"";flex:0 0 auto;width:5px;height:5px;margin-top:9px;
  background:var(--brand);border-radius:50%;
}
.svc__foot{margin-top:auto;padding-top:22px}
.svc__link{
  display:inline-flex;align-items:center;gap:7px;
  font-size:15px;font-weight:600;color:var(--brand);
}
.svc__link::after{content:"→";font-size:16px;line-height:1}
.svc__link:hover{text-decoration:none;color:var(--brand-dk);gap:11px}

/* ---------- 数据条 ---------- */
.stats{border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.stats ul{display:grid;grid-template-columns:repeat(4,1fr)}
.stats li{padding:30px 24px;border-right:1px solid var(--rule)}
.stats li:last-child{border-right:0}
.stats b{
  display:block;font-size:34px;font-weight:700;color:var(--brand);
  line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.stats span{display:block;margin-top:8px;font-size:14px;color:var(--ink-2);line-height:1.6}

/* ---------- 流程（交付步骤） ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:2px solid var(--ink)}
.flow__step{padding:26px 22px 0 0;position:relative}
.flow__step::before{
  content:"";position:absolute;left:0;top:-2px;width:100%;height:2px;background:var(--ink);
  transform-origin:left;
}
.flow__step:nth-child(2)::before,.flow__step:nth-child(3)::before,.flow__step:nth-child(4)::before{
  background:var(--rule);
}
.flow__no{
  font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--brand);
  font-variant-numeric:tabular-nums;
}
.flow__t{margin-top:10px;font-size:17px;font-weight:700;color:var(--ink);line-height:1.45}
.flow__d{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--ink-2)}

/* ---------- 双栏图文 ---------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.split--wide{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr)}
.split__shot{position:relative;border:1px solid var(--rule);border-radius:var(--r);overflow:hidden;background:var(--bg-3)}
.split__shot img{width:100%;height:100%;object-fit:cover}
.split__shot::before{
  content:"";position:absolute;left:0;top:0;width:52px;height:3px;background:var(--brand);z-index:2;
}
.split__cap{
  padding:11px 14px;font-size:13px;color:var(--ink-3);background:var(--bg-2);
  border-top:1px solid var(--rule);line-height:1.6;
}

/* ---------- 表格（交付物/技术栈） ---------- */
.tbl{border:1px solid var(--rule);border-radius:var(--r);overflow:hidden;background:#fff}
.tbl th,.tbl td{
  padding:15px 18px;text-align:left;font-size:15px;line-height:1.7;
  border-bottom:1px solid var(--rule-2);vertical-align:top;
}
.tbl thead th{
  background:var(--bg-2);font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--ink-2);
  border-bottom:1px solid var(--rule);white-space:nowrap;
}
.tbl tbody tr:last-child td{border-bottom:0}
.tbl tbody tr:hover{background:#fafbfb}
.tbl td:first-child{font-weight:600;color:var(--ink);white-space:nowrap}
/* Grid/flex items default to min-width:auto, so a wide table inside one of
   them stretches the track instead of scrolling inside its own wrapper.
   Every grid child that can hold a wide table gets min-width:0. */
.split > *{min-width:0}
.split > * > *{min-width:0}
.tbl__scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%;min-width:0;width:100%}
.tbl__scroll .tbl{min-width:640px;border:0}
.tbl__scroll .tbl thead th:first-child,
.tbl__scroll .tbl tbody td:first-child{position:sticky;left:0;background:#fff;z-index:1}
.tbl__scroll .tbl thead th:first-child{background:var(--bg-2)}
.tbl__scroll .tbl tbody tr:hover td:first-child{background:#fafbfb}

/* ---------- 芯片 / 标签 ---------- */
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chip{
  display:inline-flex;align-items:center;
  padding:7px 13px;font-size:14px;color:var(--ink-2);
  border:1px solid var(--rule);border-radius:var(--r);background:#fff;
}
.chip--on{color:var(--brand);border-color:#c3d6e8;background:var(--brand-lt);font-weight:600}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--rule)}
.faq details{border-bottom:1px solid var(--rule)}
.faq summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:22px 4px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";flex:0 0 auto;font-size:22px;font-weight:400;color:var(--ink-3);
  line-height:1.3;font-family:"Helvetica Neue",Arial,sans-serif;
}
.faq details[open] summary::after{content:"−";color:var(--brand)}
.faq summary:hover{color:var(--brand)}
.faq__a{padding:0 4px 24px;font-size:15.5px;line-height:1.9;color:var(--ink-2);max-width:78ch}
.faq__a p + p{margin-top:12px}

/* ---------- 交付物清单 ---------- */
.dl{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px}
.dl__i{
  display:flex;gap:14px;padding:20px 0;border-bottom:1px solid var(--rule-2);
  align-items:flex-start;
}
.dl__i:nth-last-child(-n+2){border-bottom:0}
.dl__n{
  flex:0 0 auto;width:26px;height:26px;border:1px solid var(--brand);border-radius:var(--r);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;
}
.dl__t{font-size:16px;font-weight:600;color:var(--ink);line-height:1.5}
.dl__d{margin-top:5px;font-size:14.5px;line-height:1.75;color:var(--ink-2)}

/* ---------- 页面内页头 ---------- */
.phead{
  background:var(--ink);color:#fff;padding:62px 0 56px;
  border-bottom:3px solid var(--brand);
}
.phead__crumb{font-size:13.5px;color:#9aa3ac;margin-bottom:18px}
.phead__crumb a{color:#c8d2dc}
.phead__crumb a:hover{color:#fff}
.phead__title{font-size:38px;line-height:1.3;font-weight:700;color:#fff;max-width:20em}
.phead__desc{margin-top:18px;font-size:17px;line-height:1.9;color:#c2cad2;max-width:70ch}
.phead__tags{margin-top:26px;display:flex;gap:9px;flex-wrap:wrap}
.phead__tags span{
  font-size:13px;color:#dbe2e9;border:1px solid rgba(255,255,255,.26);border-radius:2px;padding:6px 11px;
}

/* ---------- 页脚 ---------- */
.ftr{background:var(--ink);color:#b8bfc7;padding:56px 0 0;font-size:14.5px;line-height:1.8}
.ftr__grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;
}
.ftr__h{
  font-size:13px;font-weight:700;letter-spacing:.14em;color:#fff;text-transform:uppercase;
  margin-bottom:16px;
}
.ftr__logo{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.ftr__logo .logo__cn{color:#fff}
.ftr__logo .logo__en{color:#8b939c}
.ftr p{margin-bottom:10px;max-width:36ch}
.ftr li{margin-bottom:8px}
.ftr a{color:#c6cdd5}
.ftr a:hover{color:#fff}
.ftr__tel{
  display:inline-block;font-size:22px;font-weight:700;color:#fff;letter-spacing:.04em;
  font-variant-numeric:tabular-nums;margin-bottom:4px;
}
.ftr__tel:hover{color:#fff;text-decoration:none}
.ftr__wx{font-size:14px;color:#9aa3ac}
.ftr__bot{
  border-top:1px solid rgba(255,255,255,.13);padding:22px 0 26px;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:#8b939c;
}
.ftr__bot p{margin:0}

/* ---------- CTA 条 ---------- */
.cta{background:var(--brand);color:#fff;padding:54px 0}
.cta__in{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta__t{font-size:26px;font-weight:700;line-height:1.45;color:#fff}
.cta__d{margin-top:10px;font-size:15.5px;color:#c4d6e8;line-height:1.8;max-width:62ch}
.cta__act{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 工具类 ---------- */
.mt0{margin-top:0}
.mt24{margin-top:24px}
.mt32{margin-top:32px}
.mt40{margin-top:40px}
.mt48{margin-top:48px}
.mt56{margin-top:56px}
.mb24{margin-bottom:24px}
.mb32{margin-bottom:32px}
.center{text-align:center}
.muted{color:var(--ink-3)}
.num{font-variant-numeric:tabular-nums}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1180px){
  .hero__grid{grid-template-columns:minmax(0,1fr) 260px;gap:40px}
  .hero__title{font-size:44px}
  .sec__title{font-size:30px}
}

@media (max-width:980px){
  :root{--gut:22px;--hdr-h:60px}
  .hero__in{padding:64px 0 60px}
  .hero__grid{grid-template-columns:1fr;gap:34px}
  .hero__title{font-size:36px;max-width:none}
  .hero__desc{font-size:16.5px}
  .spec{max-width:520px}
  .hero__strip ul{grid-template-columns:repeat(2,1fr)}
  .hero__strip li:nth-child(2){border-right:0}
  .hero__strip li:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.12)}

  .svc{grid-template-columns:1fr}
  .svc__col{border-right:0;border-bottom:1px solid var(--rule)}
  .svc__col:last-child{border-bottom:0}

  .stats ul{grid-template-columns:repeat(2,1fr)}
  .stats li:nth-child(2){border-right:0}
  .stats li:nth-child(-n+2){border-bottom:1px solid var(--rule)}

  .flow{grid-template-columns:repeat(2,1fr)}
  .flow__step{padding-bottom:26px;padding-right:18px}
  .flow__step:nth-child(2n){padding-left:18px}

  .split,.split--wide{grid-template-columns:1fr;gap:34px}
  .sec{padding:60px 0}
  .sec__title{font-size:27px}
  .phead__title{font-size:31px}
  .dl{grid-template-columns:1fr}
  .dl__i:nth-last-child(-n+2){border-bottom:1px solid var(--rule-2)}
  .dl__i:last-child{border-bottom:0}
  .ftr__grid{grid-template-columns:repeat(2,1fr);gap:34px}
}

@media (max-width:680px){
  :root{--gut:18px}
  .topbar__co{display:none}
  .topbar .wrap{justify-content:flex-end}
  .nav{display:none}
  .hdr__cta .btn--ghost{display:none}
  /* 320px: the full phone number + padding does not fit next to the logo.
     Keep the tap target, drop the duplicated label, shrink the digits. */
  .hdr__cta .btn--sm{padding:8px 11px;font-size:13px}
  .hdr .wrap{gap:14px}
  .logo__cn{font-size:16px}
  .logo__en{font-size:9.5px;letter-spacing:.1em}
  .hero__in{padding:48px 0 46px}
  .hero__title{font-size:28px;line-height:1.3}
  .hero__kicker{font-size:11.5px;padding:5px 10px}
  .hero__desc{font-size:15.5px}
  .hero__actions .btn{flex:1 1 auto}
  .hero__strip ul{grid-template-columns:1fr}
  .hero__strip li{border-right:0;border-bottom:1px solid rgba(255,255,255,.12);padding:14px 18px}
  .hero__strip li:last-child{border-bottom:0}
  .hero__strip b{font-size:19px}

  .sec{padding:48px 0}
  .sec__title{font-size:23px}
  .sec__sub{font-size:15.5px}
  .lead{font-size:16px}
  .sec__hd{margin-bottom:30px}
  .sec__hd--row .sec__hd--row > a{width:100%}

  .stats ul{grid-template-columns:1fr}
  .stats li{border-right:0;border-bottom:1px solid var(--rule);padding:22px 4px}
  .stats li:last-child{border-bottom:0}
  .stats b{font-size:28px}

  .flow{grid-template-columns:1fr}
  .flow__step{padding:20px 0 20px 0;border-bottom:1px solid var(--rule-2)}
  .flow__step:nth-child(2n){padding-left:0}
  .flow__step:last-child{border-bottom:0}

  .tbl th,.tbl td{padding:12px 13px;font-size:14px}
  .faq summary{font-size:16px;padding:18px 2px}
  .faq__a{font-size:15px;padding:0 2px 20px}

  .phead{padding:40px 0 36px}
  .phead__title{font-size:25px}
  .phead__desc{font-size:15.5px}

  .ftr__grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .ftr__bot{flex-direction:column;gap:8px}
  .cta__t{font-size:21px}
  .cta__act{width:100%}
  .cta__act .btn{flex:1 1 auto}
}

/* ---------- 打印 ---------- */
@media print{
  .hdr,.topbar,.cta,.ftr{display:none}
  body{font-size:12pt}
  .sec{padding:18pt 0;page-break-inside:avoid}
}