/* ============================================================
   Ningde Linjingxingke — pump component foundry
   Type scale, colours, spacing and section heights measured
   directly off the reference site at a 90rem viewport.
   Font sizes are FIXED px (verified: the reference renders the
   same 2.4rem at 1440 as the 119.0625rem design frame shows), only
   the container is fluid at 90%.
   ============================================================ */

/* ── 宽屏放大总开关 ──────────────────────────────────────────
   全站长度都是 rem(1rem = 这里的根字号)。1920 以下根字号 16px,rem 与原 px
   一比一,任何一档渲染都不变;1920/2560/3400 起根字号 17/19/24,字号、间距、
   卡片、页眉跟着一起长,比例仍是 1440 设计稿的比例。
   不用 zoom:zoom 会把 100vh 的 hero 和 Swiper 的量宽一起搅乱。 */
html{font-size:16px}
@media (min-width:1920px){ html{font-size:17px} }
@media (min-width:2560px){ html{font-size:19px} }
@media (min-width:3400px){ html{font-size:24px} }

:root{
  /* colour */
  /* Brand colours sampled from the client's logo PNG:
     #0058A0 (primary blue) and #E89010 (accent orange). */
  --primary:#0058a0;
  --primary-dk:#004480;
  --primary-lt:#e6f0f9;
  --brand-orange:#e89010;
  --accent:#d90d0d;
  --ink:#000000;
  --body:#4d4d4d;
  --muted:#666666;        /* 参考站就是 #666(5.74:1);#999696 只有 2.93:1,双重错误 */
  --dark:#000000;          /* process / footer band   */
  --dark-2:#212121;        /* certifications band     */
  --gray:#efeff1;          /* blog band               */
  --line:#e4e4e4;
  --line-input:#8a8a8a;   /* 表单控件边框要 >=3:1;#e4e4e4 只有 1.27:1 */
  --radius:0.25rem;
  --font:"Montserrat",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;

  /* type scale — measured, line-height is a flat 1.3 throughout */
  --fs-h1:3rem;    --lh-h1:3.9rem;
  --fs-h2:3rem;    --lh-h2:3.9rem;
  --fs-h2-xl:3.125rem; --lh-h2-xl:4.375rem;
  --fs-h2-md:2.25rem; --lh-h2-md:2.925rem;
  --fs-h2-sm:1.75rem; --lh-h2-sm:2.275rem;
  --fs-lead:2.4rem;--lh-lead:3.12rem;
  --fs-h3:1.375rem;    --lh-h3:1.7875rem;
  --fs-h3-sm:1.125rem; --lh-h3-sm:1.4625rem;
  --fs-body:1rem;  --lh-body:1.7;
}

*,*::before,*::after{box-sizing:border-box}
/* 预览照片:容器已经定好比例,图一律 cover 填满 */
.ph{width:100%;height:100%;object-fit:cover;display:block}
.split > div > .ph,.split .ph{border-radius:var(--radius)}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){ html{scroll-behavior:auto} }

/* 统一焦点环。键盘可见、鼠标不打扰。 */
:focus-visible{outline:0.1875rem solid #ffb703;outline-offset:2px;border-radius:2px}
.hdr :focus-visible,.pbanner :focus-visible,.cta--quote :focus-visible,
.band--dark :focus-visible,.sec--dark :focus-visible{outline-color:#ffd166}

.skip-link{position:absolute;left:0.75rem;top:-3.75rem;z-index:200;background:#fff;color:#0058a0;
  padding:0.75rem 1.25rem;border-radius:0.25rem;font-weight:700;box-shadow:0 0.25rem 1rem rgba(0,0,0,.25);
  transition:top .15s}
.skip-link:focus{top:0.75rem}
body{margin:0;font-family:var(--font);font-size:var(--fs-body);line-height:var(--lh-body);
     color:var(--body);background:#fff;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.25rem}
li{margin:.35em 0}

h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:600}
h1{font-size:var(--fs-h1);line-height:var(--lh-h1);font-weight:700;margin-bottom:0.625rem}
h2{font-size:var(--fs-h2);line-height:var(--lh-h2);margin-bottom:1.25rem}
h2.xl{font-size:var(--fs-h2-xl);line-height:var(--lh-h2-xl);margin-bottom:0}
h2.md{font-size:var(--fs-h2-md);line-height:var(--lh-h2-md);margin-bottom:0}
h2.sm{font-size:var(--fs-h2-sm);line-height:var(--lh-h2-sm);margin-bottom:1.25rem}
h3{font-size:var(--fs-h3);line-height:var(--lh-h3);margin-bottom:0.375rem}
h4{font-size:var(--fs-h3-sm);line-height:var(--lh-h3-sm)}

/* Container policy — verified against the reference's own bootstrap 5.2.0 build,
   whose container ladder has been customised (>=1200 is 90%, not the stock 71.25rem),
   then fly_style.css overrides the >=1400 step (82.5rem) back to 90% with !important.
   Net effect: 90% from 1200 up, bootstrap fixed widths below.
   The HEADER container carries an inline max-width:90%!important, so it is 90% at
   every width — that is why measuring the FIRST .container on the page misleads. */
.container{width:100%;max-width:90%;margin:0 auto;padding:0 1.05rem}
/* 2K/4K:参考站 90% 无上限,3840 上一行正文 1687px 没法读。上限用 rem,
   随根字号一起长:1920→1690px(相当于 1440 稿的 1591)、2560→2014(≈1696)、
   3840→2688(≈1792)。 */
@media (min-width:1600px){ .container{max-width:min(90%,100rem)} }
@media (min-width:1920px){ .container{max-width:min(88%,100rem)} }
@media (min-width:2560px){ .container{max-width:min(80%,106rem)} }
@media (min-width:3400px){ .container{max-width:min(72%,112rem)} }
@media (max-width:1199px){ .container{max-width:60rem} }
@media (max-width:991px){  .container{max-width:45rem} }
@media (max-width:767px){  .container{max-width:33.75rem} }
@media (max-width:575px){  .container{max-width:100%} }
.hdr .container{max-width:90%!important}
.row{display:flex;flex-wrap:wrap;margin:0 -0.75rem}
.col{padding:0 0.75rem}

/* spacer blocks — the reference uses standalone height divs, not padding */
.sp-30{height:1.875rem}.sp-35{height:2.1875rem}.sp-50{height:3.125rem}.sp-60{height:3.75rem}
.sp-70{height:4.375rem}.sp-80{height:5rem}.sp-90{height:5.625rem}.sp-100{height:6.25rem}
.sp-110{height:6.875rem}.sp-125{height:7.8125rem}

.center{text-align:center}
.muted{color:var(--muted)}
.lead{font-size:var(--fs-lead);line-height:var(--lh-lead);font-weight:600;color:var(--ink)}
.eyebrow{display:inline-block;font-size:0.875rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--primary);margin-bottom:0.875rem}
.eyebrow--light{color:#9fc0ff}

/* ---------- buttons ---------- */
.btn{display:inline-block;padding:0.9375rem 2.125rem;border-radius:var(--radius);font-weight:600;
  font-size:0.875rem;letter-spacing:.06em;text-transform:uppercase;text-align:center;cursor:pointer;
  border:2px solid transparent;transition:.18s;text-decoration:none!important}
/* nowrap belongs to the header CTA, which must never wrap; a long in-body button
   ('Send a drawing or a photo of your worn impeller') was 31.875rem wide at 390 and
   pushed the whole article page sideways. */
.nav__cta,.btn--nowrap{white-space:nowrap}
.btn--primary{background:var(--primary);color:#fff}
.btn--primary:hover{background:var(--primary-dk)}
.btn--ghost{border-color:#fff;color:#fff}
.btn--ghost:hover{background:#fff;color:var(--primary)}
.btn--outline{border-color:var(--primary);color:var(--primary)}
.btn--outline:hover{background:var(--primary);color:#fff}
.btn--dark{border-color:#fff;color:#fff}
.btn--dark:hover{background:#fff;color:#000}
.btn--lg{padding:1.125rem 2.625rem;font-size:0.9375rem}
.btn-row{display:flex;gap:0.875rem;flex-wrap:wrap;margin-top:1.625rem}

/* ---------- header ---------- */
/* The reference header is a TRANSPARENT layer sitting on top of the hero
   (position:absolute; top:0.625rem) with white nav text — there is no white-background
   header state anywhere on the site. top:0.625rem collapses to 0 at <=1199. */
.hdr{background:transparent;border-bottom:0;position:absolute;top:0.625rem;left:0;right:0;z-index:60}
/* Three-block header, same as the reference's _left / _center / _right.
   DELIBERATE DEVIATION: the reference centres _center with
   position:absolute;left:50%;translate(-50%,-50%). It can afford that because its
   @font-face is broken (format('ttf') is an invalid keyword, so the whole src is
   dropped) and it renders in a system font — its 9 nav items measure 38.75rem. We
   load Montserrat correctly and the same 9 items measure 41.375rem, which makes an
   absolutely-centred nav collide with the right block at 1440. Centring inside the
   remaining space instead keeps 0.875rem item gaps and guarantees no overlap. */
.hdr .container{display:flex;align-items:center;gap:1rem;min-height:5.625rem;position:relative}
.hdr__left{flex:0 0 auto}
.hdr__center{flex:1 1 auto;min-width:0;display:flex;justify-content:center}
.hdr__right{flex:0 0 auto;display:flex;align-items:center;gap:0.5rem}
.logo{display:flex;align-items:center;gap:0.625rem;text-decoration:none!important;flex:0 0 auto}
.logo__mark{width:2.75rem;height:2.75rem;flex:0 0 auto;object-fit:contain}
.logo__txt{font-weight:800;font-size:1.0625rem;color:#fff;line-height:1.1;letter-spacing:.2px}
.logo__txt small{display:block;font-size:0.625rem;font-weight:600;color:#c9d3e6;
  letter-spacing:.14em;text-transform:uppercase}
/* nav metrics lifted from the reference: 0.875rem/500, padding 0.625rem 0 (no side padding —
   items are separated by the flex gap), letter-spacing normal, CTA is a 2rem pill. */
/* Nav is absolutely centred like the reference's .cs-main_header_center, so its
   width has to fit inside container - 2 x right-block. Rather than squeezing the
   nav until items touch, the right block is kept narrow (smaller gap + tighter
   CTA padding) so a readable 0.875rem gap survives here. */
.nav{display:flex;align-items:center;gap:0.75rem}
.nav a{padding:0.625rem 0;font-size:0.875rem;font-weight:500;letter-spacing:normal;white-space:nowrap;
  text-transform:uppercase;color:#fff;text-decoration:none!important}
.nav a:hover,.nav a[aria-current]{color:#9fc0ff}
/* ---------- dropdown / mega panels ----------
   Reference geometry (.cs-nav_list ul): width 16.25rem, background #181818,
   2px #0058a0 top border, padding 0.625rem 0, radius 0 0 0.3125rem 0.3125rem,
   hidden via opacity+visibility, slides from top:calc(100%+0.9375rem) to 100%.
   Mega panel: 81rem @>=1401, 69.75rem @<=1400, 100% @<=1199. */
.nav-item{position:relative;display:flex;align-items:center}
.nav-item.has-sub > a{cursor:pointer}
/* The caret is absolutely positioned so it costs the <a> no width — four inline
   carets were adding 2.25rem to the nav, which is what still pushed the centred nav
   into the right block. The reference's arrow behaves the same way. */
.nav-item.has-sub > a{position:relative;padding-right:0.625rem}
.nav .caret{position:absolute;right:0;top:50%;width:0.375rem;height:0.375rem;margin:0;
  border-right:1px solid currentColor;border-bottom:1px solid currentColor;
  transform:translateY(-70%) rotate(45deg)}
.subnav{position:absolute;top:calc(100% + 0.9375rem);left:0;width:16.25rem;background:#181818;
  border-top:2px solid #0058a0;padding:0.625rem 0;border-radius:0 0 0.3125rem 0.3125rem;
  box-shadow:0 1px 2px 0 rgba(2,0,181,.1);opacity:0;visibility:hidden;
  transition:all .4s ease;z-index:70}
/* :focus-within —— 只有 :hover 的话键盘用户永远打不开下拉,
   而 productlist/jet-pump-casing.html 全站唯一入口就在里面。 */
.nav-item:hover > .subnav,
.nav-item:focus-within > .subnav{opacity:1;visibility:visible;top:100%}
.subnav a{display:block;padding:0.5rem 1.25rem;color:#fff!important;font-size:0.875rem;
  font-weight:500;text-transform:none;letter-spacing:normal;white-space:normal}
.subnav a:hover{color:#9fc0ff!important;background:rgba(255,255,255,.06)}
/* The mega panel is centred on the HEADER, not on its own menu item — anchoring it
   to the item pushed a 81rem panel off the left edge. position:static on the item
   makes .hdr (which is already positioned) the containing block. Width is capped so
   it can never overflow the viewport. */
.nav-item.is-mega{position:static}
.nav-item.is-mega .subnav{width:min(81rem, calc(100vw - 3rem));left:50%;
  transform:translateX(-50%);padding:1rem 1.25rem 1.25rem;display:grid;
  grid-template-columns:repeat(3,1fr);gap:2px 1.5rem}
@media (max-width:1400px){ .nav-item.is-mega .subnav{width:min(69.75rem, calc(100vw - 3rem))} }

/* selector must out-specify `.nav a` (0,1,1), otherwise its 0.875rem wins */
/* CTA lives in .hdr__right now, outside .nav — the old `.nav a…` selector
   stopped matching and .btn's uppercase widened it 11.3125rem -> 14.8125rem, which is
   what made the centred nav collide. .btn.nav__cta (0,2,0) beats .btn. */
.btn.nav__cta{border-radius:2rem;font-size:0.9375rem;padding:0.625rem 1rem;
  text-transform:none;letter-spacing:normal;font-weight:600;color:#fff}
.btn.nav__cta:hover{background:var(--primary-dk);color:#fff}
.burger{display:none;background:none;border:1px solid rgba(255,255,255,.5);
  border-radius:0.3125rem;padding:0.5rem 0.625rem;cursor:pointer}
.burger span{display:block;width:1.25rem;height:2px;background:#fff;margin:0.25rem 0}

/* ---------- hero: parallax swiper, values lifted from the reference ----------
   .cs-hero.cs-style4  height:100vh · padding:5rem 7.5rem · align-items:center
   .cs-hero_title      3rem/700, margin 0 0 0.625rem      .tit  1.75rem #fff
   .cs-hero_text       clip-path inset(0 100% 0 0) -> inset(0 0% 0 0), .7s, delay .8s
   .cs-entity_img      height:100vh, object-fit:cover
   ---------------------------------------------------------------------------- */
.hero-slider{position:relative;overflow:hidden;background:#0b0f16}
.hero-slider.loading{opacity:0;visibility:hidden}
.hero-slider{transition:opacity .6s ease}
/* Each slide must clip: the parallax handler translates .hero-fig by up to
   half the viewport width, which would otherwise bleed into the next slide. */
.hero-slider .swiper-slide{overflow:hidden;position:relative}
.hero-fig{position:absolute;top:0;left:0;width:100%;height:100%;margin:0;
  background-position:center;background-size:cover;overflow:hidden}
.hero-fig .hero-img{height:100vh;width:100%;object-fit:cover;display:block}
/* NO scrim: the reference puts white text straight onto the photo. */
.hero-inner{height:100vh;display:flex;align-items:center;padding:5rem 7.5rem;position:relative}
.hero-text{position:relative;z-index:10;width:100%;
  clip-path:inset(0 100% 0 0);-webkit-clip-path:inset(0 100% 0 0);
  transition:all .7s ease}
.swiper-slide-active .hero-text{clip-path:inset(0 0% 0 0);-webkit-clip-path:inset(0 0% 0 0);
  transition-delay:.8s;height:85vh;display:flex;flex-direction:column;
  justify-content:flex-end;box-sizing:border-box}
.hero-text .tit{color:#fff;font-size:1.75rem;line-height:1.4;margin:0 0 0.375rem;font-weight:400}
p.hero-title,
.hero-title{color:#fff;margin:0 0 0.625rem 0;font-weight:700;font-size:3rem;
  line-height:3.9rem;max-width:62.5rem;position:relative}
.hero-desc{color:#fff;max-width:50rem;margin:0.875rem 0 0;font-size:1rem;line-height:1.75}
.hero-btn{display:inline-block;border-radius:0.9375rem;background:#0058a0;color:#fff;
  padding:0.625rem 1.25rem;font-weight:600;cursor:pointer;transition:all .3s ease;
  text-decoration:none!important;border:none;margin-top:1.625rem;font-size:1rem}
.hero-btn:hover{background:#f1f1f1;color:#0058a0}
/* pagination + arrows, positioned bottom-right like the reference */
/* pagination geometry lifted from the reference:
   60x12 pill, radius 15, margin 0 0.5rem, 50% white -> #0058a0 when active.
   Position: >=600 left:90% translateX(-50%) bottom:5rem; <600 centred bottom:1.875rem. */
.hero-slider .swiper-pagination{position:absolute;bottom:5rem;left:90%;right:auto;
  transform:translateX(-50%);width:initial;z-index:12;display:flex;justify-content:center}
.hero-slider .swiper-pagination-bullet{width:3.75rem;height:0.75rem;border-radius:0.9375rem;
  margin:0 0.5rem;background:rgba(255,255,255,.5);opacity:1;transition:.25s;cursor:pointer}
.hero-slider .swiper-pagination-bullet-active{background:#0058a0;width:3.75rem}

/* inner page banner */
/* header is absolute and transparent, so inner-page banners must clear it themselves */
.pbanner{background:linear-gradient(120deg,var(--primary),#0a1f5c);color:#fff;
  padding:10.625rem 0 4.125rem}
.pbanner h1{color:#fff}
.pbanner p{color:#c9d8f6;margin:0.875rem 0 0;max-width:52em;font-size:1.0625rem}
/* ⚠️ 必须排在 .pbanner 之后。.pbanner 的 background 是**简写**,会把 background-size /
   background-repeat 一并重置掉;写在前面的话行内 background-image 虽然赢了,
   但尺寸退回 auto、平铺退回 repeat —— 图会在横幅里平铺。今天已经踩过一次(.split--rfq)。 */
.pbanner--photo{background-size:cover;background-position:center 42%;
  background-repeat:no-repeat;background-color:#0a1f5c}
.crumb{font-size:0.8125rem;color:#a9bde6;margin-bottom:1rem}
.crumb a{color:#dbe6ff}

/* ---------- section bands ---------- */
.band--dark{background:var(--dark);color:#c9cfd8}
.band--dark h2,.band--dark h3,.band--dark h4{color:#fff}
.band--dark2{background:var(--dark-2);color:#c9cfd8}
.band--dark2 h2,.band--dark2 h3{color:#fff}
.band--gray{background:var(--gray)}
.band--grad{background:linear-gradient(120deg,#0058a0,#0a1f5c);color:#fff}
.band--grad h2,.band--grad h3{color:#fff}

/* Clients & Partners — reference: eyebrow 1.5rem!important/600 centred #0058a0,
   intro paragraph max-width:53.75rem with margin:auto (which also cancels the
   global p{margin-bottom:0.9375rem}). Logo strip is full-bleed, outside .container. */
.clients-eyebrow{color:#0058a0;text-align:center;font-size:1.5rem;font-weight:600;margin:0}
.clients-intro{color:#000;text-align:center;max-width:53.75rem;margin:auto}

/* ---------- Product-series band ----------
   Reference: a slick pair — copy pane (source order FIRST) linked to a card rail.
   Background is a photo via inline background-image; .cs-gradient_bg_1 is an EMPTY
   ruleset, so there is no gradient to reproduce. Card rail disappears <=26.25rem.
   Slide h2 is inline 1.75rem but @media(<=991) h2{1.625rem!important} beats it. */
.prodband{position:relative;background:#0b1a3a;background-size:cover;background-position:center}
.prodband::before{content:"";position:absolute;inset:0;background:rgba(6,16,40,.72)}
.prodband .container{position:relative;z-index:2}
/* minmax(0,…) is required: a grid item defaults to min-width:auto, and Swiper's
   horizontally laid-out wrapper then blows the column out to millions of px. */
.prodband__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:2.5rem;align-items:center}
.ps-label{color:#fff;font-size:1.75rem;margin:0}
.ps-cat{color:#fff;font-size:1.25rem;margin:15% 0 0}
.prodband h2{color:#fff;font-size:1.75rem;line-height:2.275rem;max-width:37.5rem}
.prodband__copy p.ps-desc{color:#fff;font-weight:500;max-width:37.5rem}
.ps-actions{display:flex;gap:1.25rem;flex-wrap:wrap;margin-top:0.375rem}
/* autoHeight 把 wrapper 高度设成正好等于内容高,按钮底边是贴着裁切线的;
   留 2px 余量,亚像素舍入就啃不到按钮最后一行 */
#ps-copy .swiper-slide{padding-bottom:2px}
.ps-learn{border-radius:0.3125rem;background:#0058a0;color:#fff;padding:0.625rem 1.25rem;font-weight:600;
  display:inline-block;text-decoration:none!important;transition:.2s}
.ps-learn:hover{background:#fff;color:#0058a0}
.ps-quote{border-radius:0.3125rem;background:#fff;color:#000;padding:0.625rem 1.25rem;font-weight:600;
  display:inline-block;text-decoration:none!important;transition:.2s}
.ps-quote:hover{background:#0058a0;color:#fff}
.prodband__rail{min-width:0}
.prodband__rail .swiper{overflow:hidden;width:100%}
.ps-card{background:#fff;border-radius:0.5rem;overflow:hidden;cursor:pointer;
  transition:transform .25s,box-shadow .25s}
.ps-card:hover{transform:translateY(-0.25rem);box-shadow:0 0.625rem 1.75rem rgba(0,0,0,.25)}
.ps-card__img{aspect-ratio:4/3;background:#e8eefb}
.ps-card__img svg{width:100%;height:100%}
.ps-card__body{padding:1rem 1.125rem 1.25rem}
.ps-card__body h3{font-size:1.125rem;line-height:1.35;margin:0 0 0.25rem;color:#000}
.ps-card__body p{font-size:0.84375rem;color:#666;margin:0}
.swiper-slide-thumb-active .ps-card{outline:0.1875rem solid #0058a0;outline-offset:-0.1875rem}
@media (max-width:991px){ .prodband__grid{grid-template-columns:minmax(0,1fr);gap:1.875rem}
  .ps-cat{margin-top:1.25rem} }
/* reference hides the whole card rail below 26.25rem */
@media (max-width:420px){ .prodband__rail{display:none} }

/* ---------- Process band (black) ----------
   Reference: col-lg-5 heading | col-lg-7 two-up slider.
   .cs-post_overlay has no background/opacity anywhere — it is an empty hook,
   NOT a scrim. Card title/body are bare <p> at 1.25rem/600 and 0.875rem/500 justified. */
.procband{background:#000}
.procband__grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:2.5rem;align-items:center}
.procband h2{color:#fff}
.proc-card{background:transparent}
.proc-card__thumb{margin:0 0 0.9375rem;position:relative;border-radius:0.375rem;overflow:hidden}
.proc-card__thumb svg{width:100%;height:100%;display:block}
.proc-card__info p:first-child{font-size:1.25rem;font-weight:600;color:#fff;margin:0 0 0.375rem}
.proc-card__info p:last-child{font-size:0.875rem;font-weight:500;color:#9aa3af;margin:0;
  text-align:justify;text-justify:inter-word}
.procband .swiper{overflow:hidden;width:100%;min-width:0}
.proc-nav{display:flex;gap:0.75rem;margin-top:1.625rem}
.proc-nav button{width:2.75rem;height:2.75rem;border-radius:50%;border:1px solid rgba(255,255,255,.4);
  background:transparent;color:#fff;cursor:pointer;font-size:1.125rem;line-height:1;transition:.2s}
.proc-nav button:hover{background:#0058a0;border-color:#0058a0}
@media (max-width:991px){ .procband__grid{grid-template-columns:minmax(0,1fr);gap:1.625rem} }

/* ---------- About block ----------
   Reference layout: left column = eyebrow + h2(max-width:22.5rem),
   right column = TAB SWITCHER (not buttons) + tab body.
   Tab chrome: 1px border in currentColor -> #0058a0 outline when inactive;
   li.active a gets color:#fff;background:#0058a0. Panels swap with a 400ms fade.
   Columns use the bootstrap lg and sm tiers, so they stack at 575, not 767. */
.about-eyebrow{color:#0058a0;font-size:1.25rem;font-weight:700;line-height:1.25rem;
  font-variant:all-small-caps;margin:0}
.about-head h2{color:#000;max-width:22.5rem}
.tabs{display:block}
.tabs__body{display:block}
.tabs__links{display:flex;list-style:none;padding:0;margin:0;flex-wrap:wrap}
.tabs__links li{margin:0}
.tabs__links li a{display:inline-block;padding:0.8125rem 1.5rem;border:1px solid #0058a0;
  color:#0058a0;font-size:0.875rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;
  text-decoration:none!important;transition:.2s}
.tabs__links li a:hover{background:#e8eefb}
.tabs__links li.active a{color:#fff;background:#0058a0}
.tab{display:none;animation:tabfade .4s ease}
.tab.is-active{display:block}
.tab p{color:#000;text-align:justify;text-justify:inter-word}
@keyframes tabfade{from{opacity:0}to{opacity:1}}
@media (prefers-reduced-motion:reduce){ .tab{animation:none} }

/* full-bleed image band under the About row — real height is 38.75rem
   (the reference's 45.3125rem rule is always clipped by an inline max-height:38.75rem) */
.about-band{display:block;height:38.75rem;max-height:38.75rem;border-radius:1.25rem;overflow:hidden;
  position:relative;z-index:10}
.about-band svg{width:100%;height:100%;object-fit:cover}
.about-band::before{content:"";position:absolute;inset:0;background:rgba(22,22,22,.4);
  opacity:0;transition:opacity .4s ease;z-index:2}
.about-band:hover::before{opacity:1}
@media (max-width:1550px){ .about-band{height:32.5rem} }
@media (max-width:991px){  .about-band{height:23.75rem;border-radius:0.875rem} }
@media (max-width:575px){  .about-band{height:16.25rem} }

/* claim row: col-lg-4 / col-lg-8, and the 2.4rem type never shrinks on the reference */
.claimrow{display:grid;grid-template-columns:4fr 8fr;gap:1.5rem;align-items:end}
@media (max-width:575px){ .claimrow{grid-template-columns:1fr} }

/* funfact strip */
.funfacts{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;text-align:center}
.funfact_number{color:#0058a0;font-size:3.125rem;line-height:1.2;font-weight:600}
.funfact p{color:#666;margin:1.25rem 0 0;font-size:0.9375rem}
@media (max-width:991px){ .funfacts{grid-template-columns:repeat(2,1fr);gap:1.875rem}
  .funfact_number{font-size:2.5rem} }
@media (max-width:575px){ .funfacts{grid-template-columns:1fr} }

/* value bar — 1:2 split, exactly as measured (568 : 1137) */
.valuebar{display:grid;grid-template-columns:1fr 2fr;gap:1.5rem;align-items:end}

/* generic inner-page section, mapped onto the measured scale */
.sec{padding:5rem 0}
.sec--alt{background:var(--gray)}
.sec--dark{background:var(--dark);color:#c9cfd8}
.sec--dark h2,.sec--dark h3,.sec--dark h4{color:#fff}
.sec__head{max-width:52.5rem;margin:0 auto 2.875rem;text-align:center}
.sec__head p{color:var(--muted);font-size:1.0625rem;margin:0}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:var(--line)}
.stat{background:#fff;padding:1.875rem 1.25rem;text-align:center}
.stat b{display:block;font-size:var(--fs-h2-md);line-height:var(--lh-h2-md);
  color:var(--primary);font-weight:700}
.stat span{font-size:0.875rem;color:var(--muted);display:block;margin-top:0.5rem}

/* generic grids */
.grid{display:grid;gap:1.5rem}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
/* 必须排在 .split 之后 —— 同权重靠源码顺序决胜,写在前面会被基类整条盖掉。 */
.split--rfq{grid-template-columns:1.35fr 1fr;align-items:start}

/* cards */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:.18s;display:flex;flex-direction:column;
  text-decoration:none!important}
.card:hover{box-shadow:0 0.5rem 1.625rem rgba(2,50,158,.10);transform:translateY(-2px)}
.card__img{background:var(--primary-lt);aspect-ratio:4/3}
.card__img svg,.card__img img{width:100%;height:100%;object-fit:cover;display:block}
.card__body{padding:1.375rem 1.5rem 1.625rem;flex:1;display:flex;flex-direction:column}
.card__body p{color:var(--muted);font-size:0.9375rem;flex:1}
.card__link{font-size:0.8125rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--primary);margin-top:0.75rem}
.card--dark{background:#141414;border-color:#2a2a2a}
.card--dark .card__body p{color:#9aa3af}

/* process steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:1.375rem}
.step{padding:1.75rem 1.5rem;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);
  font-size:2.125rem;font-weight:800;color:var(--primary-lt);line-height:1;display:block;margin-bottom:0.625rem}
.step p{font-size:0.9375rem;color:var(--muted);margin:0}
/* Dark bands come in two flavours (.band--dark on the home page, .sec--dark on inner
   pages). Both must restyle .step, otherwise the card stays white while the heading is
   turned white by the band rule — white-on-white, heading invisible. */
.band--dark .step,.sec--dark .step{background:#141414;border-color:#2a2a2a}
.band--dark .step::before,.sec--dark .step::before{color:#26406f}
.band--dark .step p,.sec--dark .step p{color:#9aa3af}
.band--dark .step h3,.sec--dark .step h3{color:#fff}

/* tables */
.tbl{width:100%;border-collapse:collapse;font-size:0.9375rem;background:#fff}
.tbl th,.tbl td{padding:0.875rem 1rem;border:1px solid var(--line);text-align:left;vertical-align:top}
.tbl th{background:var(--primary);color:#fff;font-weight:600;font-size:0.8125rem;
  letter-spacing:.06em;text-transform:uppercase}
.tbl tbody tr:nth-child(even){background:#f6f8fc}
.tbl td:first-child,.tbl th[scope="row"]{font-weight:600;color:var(--ink);white-space:nowrap}
.tbl th[scope="row"]{text-align:left;background:transparent}
.tbl-scroll{overflow-x:auto;border-radius:var(--radius)}

/* certifications */
/* certification cards, verbatim from the reference: col-lg-3 col-sm-4 grid,
   #3F3F3F card, 0.75rem radius, 2.5rem padding, fixed 15.625rem height */
.badges{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1.25rem}
.badge{border:0;border-radius:0.75rem;background:#3f3f3f;padding:2.5rem;height:15.625rem;
  display:flex;flex-direction:column;justify-content:center}
.badge b{display:block;color:#fff;font-size:var(--fs-h3);line-height:var(--lh-h3)}
.badge span{font-size:0.875rem;color:#c9cfd8;display:block;margin-top:0.625rem}
@media (max-width:991px){ .badges{grid-template-columns:repeat(3,minmax(0,1fr))}
  .badge{padding:1.75rem;height:13.75rem} }
@media (max-width:767px){ .badges{grid-template-columns:repeat(2,minmax(0,1fr))} }
@media (max-width:575px){ .badges{grid-template-columns:minmax(0,1fr)}
  .badge{height:auto;padding:1.5rem} }

/* client logo wall — 4.3125rem tall strip, as measured */
.logowall{display:grid;grid-template-columns:repeat(7,1fr);gap:1.25rem;align-items:stretch}
/* 客户 logo 还没到,七个虚线框挂在线上像没做完。先放「服务行业」条:线性图标 + 行业名,
   不编造客户名;logo 到了把 build.py 里的 logos 换回即可,这里的样式不用动。 */
.logowall a{min-height:4.75rem;padding:.85rem .5rem;border:1px solid var(--line);border-radius:var(--radius);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.5rem;
  font-size:0.6875rem;font-weight:600;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;
  text-align:center;background:#fafbfd;text-decoration:none!important;transition:.18s}
.logowall svg{width:1.75rem;height:1.75rem;fill:none;stroke:var(--primary);stroke-width:1.6;
  stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
.logowall a:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-lt)}
/* 7 格在 4/3/2 列网格里最后一行总缺一块;窄屏改 flex 居中换行,末行自动居中 */
@media (max-width:991px){
  .logowall{display:flex;flex-wrap:wrap;justify-content:center}
  .logowall a{flex:1 1 9.5rem;max-width:12rem}
}

.pills{display:flex;flex-wrap:wrap;gap:0.5625rem;padding:0;list-style:none;margin:0}
.pills li{margin:0}
/* 有落地页的是 <a>,没有的是 <span>,两种必须长得一样 —— 之前 span 是裸文字,一行里胶囊和裸字混着 */
.pills a,.pills span{display:inline-block;padding:0.5rem 1rem;border:1px solid var(--line);border-radius:6.25rem;
  font-size:0.875rem;color:var(--body);background:#fff;text-decoration:none!important}
.pills a:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-lt)}

/* CTA band — 56.25rem in the reference; kept generous but not empty */
.cta{background:linear-gradient(120deg,var(--primary),#0a1f5c);color:#fff;text-align:center;
  padding:4.5rem 0}
.cta h2{color:#fff}
.cta p{color:#c9d8f6;max-width:46em;margin:1.125rem auto 1.875rem;font-size:1.0625rem}

/* forms */
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:2rem}
.field{margin-bottom:1.125rem}
.field label{display:block;font-size:0.875rem;font-weight:600;color:var(--ink);margin-bottom:0.375rem}
.field .req{color:var(--accent)}
.field input,.field select,.field textarea{width:100%;padding:0.75rem 0.875rem;border:1px solid var(--line-input);
  border-radius:var(--radius);font-family:inherit;font-size:0.9375rem;color:var(--ink);background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);
  box-shadow:0 0 0 0.1875rem rgba(2,50,158,.10)}
.field textarea{min-height:7rem;resize:vertical}
.field small{display:block;color:var(--muted);font-size:0.8125rem;margin-top:0.3125rem}
.drop{border:2px dashed #c3d0e8;border-radius:var(--radius);padding:1.75rem 1.125rem;text-align:center;
  background:#f6f8fc;cursor:pointer;transition:.15s}
.drop:hover,.drop.is-over{border-color:var(--primary);background:var(--primary-lt)}
.drop b{color:var(--primary)}
.drop span{display:block;font-size:0.8125rem;color:var(--muted);margin-top:0.3125rem}
.filelist{list-style:none;padding:0;margin:0.75rem 0 0;font-size:0.875rem}
.filelist li{display:flex;justify-content:space-between;gap:0.75rem;padding:0.5rem 0.75rem;background:#f6f8fc;
  border:1px solid var(--line);border-radius:var(--radius);margin:0.375rem 0}
.form-note{background:var(--primary-lt);border-left:0.1875rem solid var(--primary);padding:0.9375rem 1.0625rem;
  font-size:0.875rem;border-radius:0 var(--radius) var(--radius) 0;margin-bottom:1.375rem}

/* blog band heading row: col-lg-6 h2 | col-lg-6 right-aligned "learn" button
   (border-radius:0.3125rem). The reference block carries NO date anywhere. */
.blog-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1.5rem;
  align-items:end;margin-bottom:2.5rem}
.blog-head h2{color:#000;margin:0}
.blog-head .blog-cta{justify-self:end}
.learn{display:inline-block;border-radius:0.3125rem;background:#0058a0;color:#fff;
  padding:0.625rem 1.25rem;font-weight:600;text-decoration:none!important;transition:.2s}
.learn:hover{background:#fff;color:#0058a0;box-shadow:inset 0 0 0 1px #0058a0}
.card__img.is-thumb{border-radius:0.9375rem;overflow:hidden;aspect-ratio:16/10}
@media (max-width:767px){ .blog-head{grid-template-columns:minmax(0,1fr)}
  .blog-head .blog-cta{justify-self:start} }

/* blog article */
.post{max-width:51.25rem;margin:0 auto}
.post h2{margin-top:1.5em;font-size:var(--fs-h2-md);line-height:var(--lh-h2-md)}
.post h3{margin-top:1.3em}
.post figure{margin:1.875rem 0}
.post figcaption{font-size:0.8125rem;color:var(--muted);text-align:center;margin-top:0.5rem}
.post blockquote{border-left:0.1875rem solid var(--primary);margin:1.625rem 0;padding:0.375rem 0 0.375rem 1.375rem;
  color:var(--ink);font-size:1.125rem}
.meta{font-size:0.875rem;color:var(--muted);margin-bottom:1.5rem}

/* footer — h3 18/23.4 with 2.1875rem bottom margin, as measured */
.ftr{background:#000;color:#a7b1c2;padding:4.375rem 0 0;font-size:0.9375rem}
.ftr h3{color:#fff;font-size:var(--fs-h3-sm);line-height:var(--lh-h3-sm);margin-bottom:2.1875rem}
.ftr a{color:#a7b1c2;text-decoration:none}
.ftr a:hover{color:#fff}
.ftr ul{list-style:none;padding:0;margin:0}
.ftr li{margin:0.5625rem 0}
/* 参考站是 col-lg-2 ×4 + col-lg-4 —— 品牌栏宽,四个链接栏窄。 */
.ftr__grid{display:grid;grid-template-columns:1.7fr .85fr .85fr .85fr 1.2fr;
  gap:1.875rem;padding-bottom:3.125rem}
.ftr__bot{border-top:1px solid #222;padding:1.375rem 0;display:flex;justify-content:space-between;
  gap:1rem;flex-wrap:wrap;font-size:0.8125rem;color:#7e8899}


/* scroll reveal — the reference puts .wow on exactly two headings
   (certifications h2 and clients h2). Honour prefers-reduced-motion. */
.reveal{opacity:0;transform:translateY(1.75rem);transition:opacity .8s ease,transform .8s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){ .reveal{opacity:1;transform:none;transition:none} }

/* ---------- floating controls ----------
   右下角一列两颗:底下「在线聊天」(自定义启动钮,替代 Tawk 自带的气泡 + 招手贴纸 + 欢迎卡,
   点了才 maximize,见 site_common.tawk_widget),上面 WhatsApp。同尺寸、同阴影、同一条竖线。
   回顶钮只在桌面出现:滚动后浮在这列上方,做小做淡不抢戏;手机一划就到顶,直接不要。
   之前三家各放各的(Tawk 气泡 + 绿钮 + 回顶)在手机上叠成一堆,客户 09-05 说「悬浮窗太多」。 */
.fab-stack{position:fixed;right:1.5rem;bottom:1.5rem;z-index:70;display:flex;flex-direction:column;
  gap:.75rem;align-items:center}
.fab{width:3.25rem;height:3.25rem;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:#fff;position:relative;text-decoration:none!important;
  box-shadow:0 .375rem 1.125rem rgba(0,0,0,.22);transition:transform .18s,box-shadow .18s}
.fab:hover{transform:translateY(-2px);box-shadow:0 .625rem 1.5rem rgba(0,0,0,.28)}
.fab svg{width:1.5rem;height:1.5rem;fill:#fff}
.fab--wa{background:#25d366}
.fab--chat{background:var(--primary)}
.fab__badge{position:absolute;top:-.15rem;right:-.15rem;min-width:1.15rem;height:1.15rem;padding:0 .3rem;
  border-radius:1rem;background:#e53935;color:#fff;font-size:.7rem;font-weight:700;line-height:1;
  display:flex;align-items:center;justify-content:center;border:2px solid #fff}
body.chat-open .fab-stack,body.chat-open .fab-top{display:none}   /* 聊天窗打开时让位 */
.fab-top{position:fixed;right:calc(1.5rem + .375rem);bottom:-4rem;z-index:69;width:2.5rem;height:2.5rem;
  border-radius:50%;background:#fff;color:var(--primary);border:1px solid #cfd6e4;display:flex;
  align-items:center;justify-content:center;cursor:pointer;box-shadow:0 2px .5rem rgba(0,0,0,.12);
  opacity:0;transition:all .4s ease}
.fab-top.is-on{bottom:9.5rem;opacity:1}          /* 1.5 底距 + 两颗 3.25 + 间隙 .75 + 留白 .75 */
.fab-top:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.fab-top svg{width:1.1rem;height:1.1rem;fill:currentColor}
@media (max-width:767px){
  .fab-stack{right:.9rem;bottom:.9rem;gap:.6rem}
  .fab{width:3rem;height:3rem}
  .fab-top{display:none}
}

/* ---------- header search (reference has a search icon before the CTA) ---------- */
.nav-search{background:#8a8a8a;border:0;width:2.75rem;height:2.75rem;border-radius:50%;
  display:flex;align-items:center;justify-content:center;cursor:pointer;margin-left:0.5rem;
  flex:0 0 auto;transition:.2s}
.nav-search:hover{background:#0058a0}
.nav-search svg{width:1.125rem;height:1.125rem;stroke:#fff;fill:none;stroke-width:2}
/* reference search is a viewport-centred modal, not a dropdown strip:
   fixed, translate(-50%,-50%), max-width 37.5rem, white, 1px #ccc, radius 0.5rem */
.searchbar{display:none;position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);
  width:100%;max-width:37.5rem;padding:1.25rem;background:#fff;border:1px solid #ccc;
  border-radius:0.5rem;box-shadow:0 0.25rem 0.625rem rgba(0,0,0,.2);z-index:120}
.searchbar.is-open{display:block}
.searchbar .container{max-width:100%!important;padding:0}
.searchbar h3{color:#0058a0;font-size:2.125rem;line-height:1.2;margin:0}
.searchbar p{color:#000;padding:1.375rem 0;margin:0;font-size:0.9375rem}
.search-box{display:flex;gap:0.625rem}
.searchbar input{flex:1;padding:0.625rem;border:1px solid #ccc;border-radius:0.25rem;
  font-family:inherit;font-size:1rem;color:#666}
.searchbar input:focus{border-color:var(--primary)}
.search-results{margin-top:1.125rem;max-height:46vh;overflow:auto;text-align:left}
.search-hits{list-style:none;margin:0;padding:0}
.search-hits li{border-top:1px solid #e4e4e4}
.search-hits a{display:block;padding:0.75rem 0.25rem;text-decoration:none!important}
.search-hits a:hover,.search-hits a:focus-visible{background:#f4f7fc}
.search-hits b{display:block;color:var(--ink);font-size:0.9375rem;font-weight:600}
.search-hits span{display:block;color:var(--muted);font-size:0.8125rem;margin-top:0.1875rem}
.search-empty{color:var(--muted);font-size:0.875rem;margin:0.875rem 0 0}
.field-hint{display:block;margin-top:0.375rem;color:var(--muted);font-size:0.78125rem}
.field-label{display:block;margin-bottom:0.5rem;font-size:0.875rem;font-weight:600;color:var(--ink)}
.form-msg{font-size:0.875rem}
.field input[aria-invalid="true"],.field textarea[aria-invalid="true"]{border-color:#d90d0d}
.searchbar .search-submit{background:#c6c6c6;border:0;border-radius:0.25rem;padding:0 1.125rem;
  cursor:pointer;font-size:1rem;transition:.2s}
.searchbar .search-submit:hover{background:#0056b3;color:#fff}
.searchbar .search-close{position:absolute;top:0.625rem;right:0.875rem;background:none;border:0;
  font-size:1.25rem;color:#aaa;cursor:pointer;line-height:1}
.searchbar .search-close:hover{color:#ff0000}
.search-backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:110}
.search-backdrop.is-open{display:block}
.nav .caret{display:inline-block;margin-left:0.3125rem;font-size:0.5625rem;opacity:.7;vertical-align:middle}

/* Request-a-Quote band — reference: background photo, min-height:100vh,
   col-lg-7 (heading + copy + contact list) | col-lg-5 (form container).
   Contact labels are 1.5rem/600 #fff. Overrides the earlier .cta rules on purpose. */
.cta--quote{background:#0b1a3a;background-size:cover;background-position:center;color:#fff;
  min-height:100vh;position:relative;text-align:left;padding:0}
.cta--quote::before{content:"";position:absolute;inset:0;background:rgba(6,16,40,.78)}
.cta--quote .container{position:relative;z-index:2}
.cta--quote h2{color:#fff;text-align:left}
.cta--quote p{color:#fff;font-size:1rem;margin:0;max-width:none}
.quote-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:2.5rem;
  align-items:start}
.contact-info{list-style:none;padding:0;margin:0}
.contact-info li{margin:0;padding-left:0}
.contact-info li p:first-child{font-size:1.5rem;color:#fff;font-weight:600;margin:0 0 0.375rem}
.contact-info li p,.contact-info li span{color:#fff;margin:0;display:block;max-width:28.125rem}
.quote-form{background:rgba(255,255,255,.96);border-radius:0.5rem;padding:1.75rem}
.quote-form h3{margin:0 0 0.375rem;color:#000}
.quote-form .field{margin-bottom:0.875rem}
.quote-form label{color:#000}

/* ---------- responsive ----------
   Breakpoints and type sizes measured on the reference at 1440 / 768 / 390.
   Note the hero headline gets BIGGER on tablet (48 -> 60) before dropping to
   26 on phones — that is the reference's real behaviour, verified in-browser,
   not a transcription slip.
   -------------------------------------------------------------------------- */

/* nav: 9 items + search + pill CTA stop fitting below ~1360 */
/* 1400: the first hero-title step (48 -> 50) */
@media (max-width:1400px){
  .hero-title{font-size:3.125rem;line-height:4.0625rem}
}
/* .cs-font_50 ladder measured off the reference: 50 -> 42@<=1380 -> 36@<=991,
   line-height 1.4em throughout. Below 991 the theme's h2{1.625rem!important}
   overrides it, which is why our token drops to 26 there rather than 36. */
@media (max-width:1380px){
  :root{--fs-h2-xl:2.625rem; --lh-h2-xl:3.675rem}
}

/* The client's wordmark (LINJINGXINGKE) is far longer than the placeholder brand
   was, so the left block eats into the centred nav. Measured at 1440: nav needed
   49.875rem in a 46.4375rem box and overlapped the logo. Below 1500 the nav steps down to
   0.8125rem/0.625rem gap — it stays 0.875rem above that, where there is room. */
@media (max-width:1500px){
  .nav{gap:0.625rem}
  .nav a{font-size:0.8125rem}
}

/* 1361-1400 is the last strip where the horizontal nav still shows (it becomes a
   burger at 1360). Measured at 1361 the nav cleared the CTA by only 0.25rem, so the
   gaps tighten once more here. */
@media (max-width:1400px){
  .nav{gap:0.5rem}
  .hdr .container{gap:0.75rem}
}

@media (max-width:1360px){
  .nav{display:none;position:absolute;top:100%;left:0;right:0;background:#181818;flex-direction:column;
    align-items:stretch;padding:0.625rem;gap:0;border-bottom:1px solid var(--line);
    box-shadow:0 0.625rem 1.5rem rgba(0,0,0,.25)}
  .nav.is-open{display:flex}
  .nav a{padding:0.8125rem 0.875rem;border-bottom:1px solid #656565;color:#fff}
  .nav a:last-of-type{border-bottom:0}
  /* drawer: panels open inline instead of floating; reference caps the drawer at
     calc(100vh - 5rem) and scrolls it */
  .nav{max-height:calc(100vh - 5rem);overflow:auto}
  .nav-item{display:block}
  .nav-item > a{display:block}
  .subnav,.nav-item.is-mega .subnav{position:static;width:auto!important;transform:none!important;
    opacity:1;visibility:visible;background:#000;border-top:0;border-radius:0;box-shadow:none;
    padding:0 0 0 0.9375rem;display:block;grid-template-columns:none}
  .subnav a{border-bottom:1px solid #3a3a3a;font-size:0.84375rem}
  .nav .caret{opacity:.6}
  .btn.nav__cta{font-size:0.875rem;padding:0.5625rem 1rem}
  .nav-search{display:none}  /* reference hides .cs-toolbox entirely <=1199 */
  .burger{display:block}
}
/* container stays 90% at EVERY breakpoint on the reference
   (1440->1283, 768->678, 390->338). Do not widen it on small screens. */

/* ---- <=1199: hero + header geometry only (type still full size here) ---- */
@media (max-width:1199px){
  /* 实测 1024 下 4 张卡各 13.125rem,标题断成四行。这一档原来没有任何网格规则。 */
  .g4,.steps{grid-template-columns:repeat(2,1fr)}
  .hdr{top:0}
  .hdr .container{min-height:5rem}
  .hero-inner{padding:5rem 0.9375rem}
  .hero-title{font-size:3.75rem;line-height:4.875rem}
}

/* ---- <=991: the reference's real layout breakpoint.
       h2 drops to 1.625rem here (not 1199), the spacer family switches to its _lg values,
       and bootstrap's col-lg-* collapse. ---- */
@media (max-width:991px){
  .quote-grid{grid-template-columns:minmax(0,1fr);gap:1.875rem}
  .cta--quote{min-height:0}
  :root{
    --fs-h2:1.625rem;    --lh-h2:2.1125rem;
    --fs-h2-xl:1.625rem; --lh-h2-xl:2.1125rem;
    --fs-h2-md:1.625rem; --lh-h2-md:2.1125rem;
    --fs-h2-sm:1.375rem; --lh-h2-sm:1.7875rem;
    --fs-lead:1.625rem;  --lh-lead:2.1125rem;
    --fs-h3:1.25rem;    --lh-h3:1.625rem;
  }
  .sec{padding:3.75rem 0}
  .split,.valuebar{grid-template-columns:1fr;gap:1.875rem}
  .split--rfq{grid-template-columns:1fr}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .logowall{grid-template-columns:repeat(4,1fr)}
  .ftr__grid{grid-template-columns:1fr 1fr;gap:1.75rem}
  .ftr__grid > div:first-child{grid-column:1 / -1}
  /* spacer _lg values, measured off the reference's cs-height_lg_* family */
  .sp-125{height:1.875rem}
  .sp-110,.sp-100{height:1.25rem}
  .sp-90{height:1.25rem}
  .sp-80{height:1.875rem}
  .sp-70{height:1.875rem}
  .sp-60{height:1.875rem}
  .sp-50{height:1.25rem}
  .sp-35{height:1.875rem}
  .sp-30{height:1.25rem}
}

/* ---- phone: <=767 ---- */
@media (max-width:767px){
  :root{
    --fs-h1:1.625rem;    --lh-h1:2.1125rem;
    --fs-h2:1.625rem;    --lh-h2:2.1125rem;
    --fs-h2-xl:1.625rem; --lh-h2-xl:2.1125rem;
    --fs-h2-md:1.5rem; --lh-h2-md:1.95rem;
    --fs-h2-sm:1.25rem; --lh-h2-sm:1.625rem;
    --fs-lead:1.375rem;  --lh-lead:1.7875rem;
    --fs-h3:1.25rem;    --lh-h3:1.625rem;
    --fs-h3-sm:1rem; --lh-h3-sm:1.3rem;
  }
  /* The reference header on a phone is mark + CTA + burger only: its logo is a
     60x60 image rendered at 2rem, with no wordmark at all. Ours carries a text
     wordmark, and at 390 it pushed the CTA 4.625rem past the viewport. Below 767 the
     wordmark drops and the header matches the reference exactly. */
  .logo__mark{width:2rem;height:2rem}
  .logo__txt{display:none}
  .hero-desc{font-size:0.9375rem}
  .sec{padding:3rem 0}
  .g2,.g3,.g4,.steps{grid-template-columns:1fr;gap:1.375rem}
  .logowall{grid-template-columns:repeat(3,1fr)}
  .ftr{padding:3rem 0 0}
  .ftr__grid{grid-template-columns:1fr;gap:1.625rem;padding-bottom:2.125rem}
  .ftr h3{margin-bottom:1.125rem}
  .ftr__bot{flex-direction:column;gap:0.5rem}
  .form{padding:1.25rem}
  .tbl th,.tbl td{padding:0.6875rem 0.75rem;font-size:0.875rem}
  .btn{padding:0.8125rem 1.625rem;font-size:0.8125rem}
  .btn--lg{padding:0.9375rem 1.875rem;font-size:0.875rem}
  .pbanner{padding:8.125rem 0 2.625rem}
  .post h2{margin-top:1.2em}
}

/* ---- small phone: <=575 ---- */
/* 600/575: hero drops to 1.625rem, .tit to 1.125rem, pagination centres */
@media (max-width:599px){
  .hero-text .tit{font-size:1.125rem;line-height:1.6rem}
  .hero-slider .swiper-pagination{left:50%;bottom:1.875rem}
  .swiper-slide-active .hero-text{height:80vh;padding-bottom:1.25rem}
}
@media (max-width:575px){
  /* svh 排除了浏览器地址栏,100vh 在手机上会比可视区高一截 */
  .hero-inner{padding:5rem 1.25rem;height:100svh;min-height:35rem}
  .hero-fig .hero-img{height:100svh;min-height:35rem}
  .swiper-slide-active .hero-text{height:auto;padding-bottom:4.375rem}
  .hero-text .tit{font-size:0.9375rem;line-height:1.35;opacity:.9}
  .hero-title{font-size:1.625rem;line-height:2.1125rem}
  .stats{grid-template-columns:1fr}
  .logowall{grid-template-columns:repeat(2,1fr)}
  .btn-row{flex-direction:column;align-items:stretch}
  .btn-row .btn{width:100%}
}

/* 蜜罐字段:必须真的看不见也点不到,但不能用 display:none ——
   有些机器人会跳过 display:none 的字段,反而失去识别效果。 */
.hp{position:absolute!important;left:-624.9375rem!important;top:auto!important;
  width:1px!important;height:1px!important;overflow:hidden!important}

/* ── 09-05 全宽度截图巡检修正 ───────────────────────────── */
/* 编号卡放进 .grid 里时每张都显示 01:counter-reset 原来只挂在 .steps 上 */
.grid{counter-reset:s}
/* 询价带把 p 统一成白字,套进白色表单里的那句就隐形了 */
.cta--quote .quote-form p{color:var(--muted)}
/* 深底上的 .muted:#666 压 #212121 只有 2.6:1,肉眼几乎看不见 */
.band--dark .muted,.band--dark2 .muted,.sec--dark .muted{color:#9aa3af}
/* 流程卡两张图一张 4:3 一张 16:9,并排高低不齐;统一裁成 16:10 */
.proc-card__thumb{aspect-ratio:16/10}
.proc-card__thumb img,.proc-card__thumb svg{width:100%;height:100%;object-fit:cover}
/* 询价带 min-height:100vh 在 4K 是 2160px,内容只有 1100,下面空一大截 */
@media (min-width:1600px){ .cta--quote{min-height:0} }
/* 992-1199:页脚 5 栏挤成一团,品牌栏独占一行;「15,000 m²」50px 在 213px 格里折行 */
@media (max-width:1199px) and (min-width:992px){
  .ftr__grid{grid-template-columns:repeat(4,1fr)}
  .ftr__grid > div:first-child{grid-column:1 / -1}
  .funfact_number{font-size:2.5rem}
}

/* ── 社媒图标(页脚)+ WhatsApp 浮钮位置(09-05 客户给了号和社媒链接)── */
.social{display:flex;gap:.6rem;list-style:none;padding:0;margin:.9rem 0 0}
.social li{margin:0}
.social a{width:2.25rem;height:2.25rem;border-radius:50%;border:1px solid #3a3a3a;
  display:flex;align-items:center;justify-content:center;color:#a7b1c2;transition:.18s}
.social a:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.06)}
.social svg{width:1.05rem;height:1.05rem;fill:currentColor}

/* ── 09-05 晚:深底上的裸链接 + 页眉吸顶(客户看截图提的两条)──────── */
/* 询价带里 info@ / 电话 / Chat on WhatsApp 是全局 a{color:主色蓝} 压在藏青底上,根本看不见。
   深底上的裸链接(没带 class 的 <a>)一律浅蓝,悬停变白;带 class 的按钮/卡片各有各的色,不碰。 */
.cta--quote .contact-info a,
.cta a:not([class]),.band--dark a:not([class]),.band--dark2 a:not([class]),.sec--dark a:not([class]){
  color:#9fc0ff;text-decoration:underline;text-decoration-color:rgba(159,192,255,.45);text-underline-offset:.2em}
.cta--quote .contact-info a:hover,
.cta a:not([class]):hover,.band--dark a:not([class]):hover,.band--dark2 a:not([class]):hover,.sec--dark a:not([class]):hover{
  color:#fff;text-decoration-color:#fff}

/* 页眉吸顶:参考站的页眉是压在 hero 上的透明层,滚过去就没了,客户要「滑到哪都在顶上」。
   初始态不动(仍是透明压图);滚过页眉自身高度(top 10 + 90)后切成 fixed + 深色半透明底,
   从上方滑入。回到顶部再切回透明态。 */
.hdr.is-fixed{position:fixed;top:0;background:rgba(8,12,20,.94);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  box-shadow:0 2px 12px rgba(0,0,0,.28);animation:hdrDown .32s ease}
.hdr.is-fixed .container{min-height:4.5rem}
@keyframes hdrDown{from{transform:translateY(-100%)}to{transform:none}}
@media (prefers-reduced-motion:reduce){ .hdr.is-fixed{animation:none} }

/* ── 下拉菜单美化(09-05 客户截图:OEM 那块是 1296px 宽的空板,里面就两个词)────
   大菜单 = 左侧导语栏(眉题 + 一句话 + 查看全部)| 右侧两栏链接,每项「标题 + 一句说明」。
   两三项的板子用 --small 收窄。普通下拉(BLOG/ABOUT)只加阴影和行高。 */
.subnav{box-shadow:0 14px 36px rgba(0,0,0,.38);border-radius:0 0 .5rem .5rem}
.subnav a{padding:.6rem 1.25rem}
.nav-item.is-mega .subnav{width:min(64rem,calc(100vw - 3rem));padding:1.5rem 1.75rem;
  grid-template-columns:15rem minmax(0,1fr);gap:0 2rem}
.nav-item.is-mega .subnav.subnav--small{width:min(50rem,calc(100vw - 3rem))}
.mega__intro{border-right:1px solid rgba(255,255,255,.1);padding-right:1.75rem}
.mega__eyebrow{display:block;color:#9fc0ff;font-size:.72rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;margin-bottom:.55rem}
.mega__intro p{color:#b9c2d0;font-size:.85rem;line-height:1.55;margin:0 0 1rem}
.subnav .mega__all{display:inline-block;padding:0;font-size:.85rem;font-weight:600;color:#fff!important}
.subnav .mega__all:hover{background:none;color:#9fc0ff!important}
.mega__links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.2rem .75rem;align-content:start}
.subnav--small .mega__links{align-content:center}   /* 只有两项时跟左栏导语垂直居中对齐,别都挤在顶上 */
.subnav .mega__links a{display:block;padding:.7rem .9rem;border-radius:.4rem;color:#fff!important}
.subnav .mega__links a b{display:block;font-weight:600;font-size:.9rem;line-height:1.3;margin-bottom:.2rem}
.subnav .mega__links a span{display:block;color:#98a2b3;font-size:.78rem;line-height:1.45;font-weight:400}
.subnav .mega__links a:hover{background:rgba(255,255,255,.07);color:#fff!important}
.subnav .mega__links a:hover b{color:#9fc0ff}
/* 抽屉(≤1360)里退回纯列表:导语栏不要,说明句不要 */
@media (max-width:1360px){
  .subnav{box-shadow:none;border-radius:0}
  .mega__intro{display:none}
  .mega__links{display:block}
  .subnav .mega__links a{padding:.8rem .9rem;border-radius:0;border-bottom:1px solid #3a3a3a}
  .subnav .mega__links a b{font-weight:500;font-size:.85rem;margin:0}
  .subnav .mega__links a span{display:none}
}

/* hero 在 2K/4K 上仍是满屏高,rem 放大后标题 57/72px 在 1440/2160 高的画面里
   还是偏小,单独再抬一档。写在最后:.hero-title 基类在上面,同权重后者胜。 */
@media (min-width:2560px){
  p.hero-title,.hero-title{font-size:3.5rem;line-height:1.25;max-width:70rem}
  .hero-desc{font-size:1.1rem;max-width:56rem}
  .hero-text .tit{font-size:2rem}
}
@media (min-width:3400px){
  p.hero-title,.hero-title{font-size:3.8rem;max-width:76rem}
  .hero-desc{font-size:1.15rem;max-width:60rem}
  .hero-text .tit{font-size:2.1rem}
}