/* ==========================================================================
   齐齐哈尔英格机械有限公司 · 官网样式
   深蓝 + 钢灰 + 热处理橙，工业风
   ========================================================================== */

:root{
  --navy-900:#061A2C;
  --navy-800:#0A2540;
  --navy-700:#103A5E;
  --navy-600:#17507E;
  --steel-600:#4A6275;
  --steel-500:#6B8296;
  --steel-300:#B9C7D3;
  --steel-200:#D7E0E8;
  --paper:#F4F6F9;
  --paper-2:#EAEFF4;
  --white:#fff;
  --orange:#E8702A;
  --orange-600:#D05F1D;
  --orange-100:#FCEADE;
  --line:rgba(16,58,94,.12);
  --shadow-sm:0 2px 8px rgba(6,26,44,.06);
  --shadow-md:0 12px 32px rgba(6,26,44,.10);
  --shadow-lg:0 24px 64px rgba(6,26,44,.18);
  --r-sm:6px;
  --r-md:12px;
  --r-lg:20px;
  --wrap:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:84px;
}

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

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:#22303C;
  background:var(--white);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;letter-spacing:-.01em}
p{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:var(--orange);color:#fff}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--orange);color:#fff;padding:10px 16px;border-radius:0 0 var(--r-sm) 0;
}
.skip-link:focus{left:0}

/* ---------- 按钮 ---------- */
.btn{
  --btn-bg:var(--orange);
  --btn-fg:#fff;
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:12px 26px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  background:var(--btn-bg);color:var(--btn-fg);
  border:1px solid transparent;
  transition:transform .25s var(--ease),background .25s var(--ease),
             box-shadow .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
  will-change:transform;
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{box-shadow:0 10px 24px rgba(232,112,42,.28)}
.btn--primary:hover{background:var(--orange-600);box-shadow:0 14px 30px rgba(232,112,42,.36)}
.btn--outline{--btn-bg:transparent;--btn-fg:#fff;border-color:rgba(255,255,255,.45)}
.btn--outline:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn--ghost{--btn-bg:transparent;--btn-fg:var(--navy-800);border-color:rgba(16,58,94,.25)}
.btn--ghost:hover{background:rgba(16,58,94,.06);border-color:var(--navy-700)}
.btn--sm{padding:8px 18px;font-size:14px}
.btn--lg{padding:15px 34px;font-size:16px}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--navy-900);color:rgba(255,255,255,.72);
  font-size:13px;line-height:1;
}
.topbar__inner{display:flex;justify-content:space-between;align-items:center;gap:16px;height:40px}
.topbar__left,.topbar__right{display:flex;align-items:center;gap:22px;min-width:0}
.topbar__item{display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.topbar__item svg{width:14px;height:14px;fill:var(--orange);flex:none}
.topbar__item a:hover{color:#fff}
.topbar__item--addr{color:rgba(255,255,255,.55)}

/* ---------- 页头 ---------- */
.header{
  position:sticky;top:0;z-index:90;
  background:rgba(10,37,64,.86);
  backdrop-filter:saturate(160%) blur(12px);
  -webkit-backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.header__inner{display:flex;align-items:center;gap:20px;height:var(--header-h)}
.header.is-solid{background:rgba(255,255,255,.95);border-color:var(--line);box-shadow:var(--shadow-sm)}

.brand{display:flex;align-items:center;gap:11px;flex:none;min-width:0;max-width:330px}
.brand__logo{
  width:52px;height:52px;border-radius:50%;
  background:#fff;object-fit:cover;
  box-shadow:0 0 0 2px rgba(255,255,255,.5),0 6px 18px rgba(0,0,0,.25);
  transition:transform .4s var(--ease),box-shadow .3s var(--ease);
}
.brand:hover .brand__logo{transform:rotate(-8deg) scale(1.04)}
.brand__text{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.brand__text strong{
  font-size:15px;color:#fff;letter-spacing:.01em;white-space:nowrap;
  transition:color .35s var(--ease);
}
.brand__text em{
  font-style:normal;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  color:rgba(255,255,255,.5);white-space:nowrap;transition:color .35s var(--ease);
}
.header.is-solid .brand__text strong{color:var(--navy-800)}
.header.is-solid .brand__text em{color:var(--steel-500)}

.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav__link{
  position:relative;padding:10px 12px;border-radius:999px;white-space:nowrap;
  font-size:14.5px;color:rgba(255,255,255,.78);
  transition:color .25s var(--ease),background .25s var(--ease);
}
.nav__link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:5px;height:2px;
  background:var(--orange);transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease);border-radius:2px;
}
.nav__link:hover{color:#fff}
.nav__link:hover::after,.nav__link.is-active::after{transform:scaleX(1)}
.nav__link.is-active{color:#fff}
.header.is-solid .nav__link{color:var(--steel-600)}
.header.is-solid .nav__link:hover,.header.is-solid .nav__link.is-active{color:var(--navy-800)}

.header__actions{display:flex;gap:10px;flex:none}
.header__actions .btn--ghost{--btn-fg:#fff;border-color:rgba(255,255,255,.4)}
.header__actions .btn--ghost:hover{background:rgba(255,255,255,.14)}
.header.is-solid .header__actions .btn--ghost{--btn-fg:var(--navy-800);border-color:rgba(16,58,94,.22)}
.header.is-solid .header__actions .btn--ghost:hover{background:rgba(16,58,94,.06)}

.nav__actions--mobile{display:none}

.burger{display:none;width:44px;height:44px;border-radius:10px;margin-left:auto;position:relative}
.burger span{
  position:absolute;left:11px;right:11px;height:2px;background:#fff;border-radius:2px;
  transition:transform .3s var(--ease),opacity .2s var(--ease),background .3s var(--ease);
}
.burger span:nth-child(1){top:15px}
.burger span:nth-child(2){top:21px}
.burger span:nth-child(3){top:27px}
.header.is-solid .burger span{background:var(--navy-800)}
.burger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 首屏 ---------- */
.hero{position:relative;height:calc(100vh - var(--header-h) - 40px);height:calc(100svh - var(--header-h) - 40px);min-height:600px;max-height:900px;overflow:hidden;background:var(--navy-900)}
.hero__slides{position:absolute;inset:0}
.hero__slide{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:0;transform:scale(1.06);
  transition:opacity 1.2s var(--ease),transform 7s linear;
}
.hero__slide.is-active{opacity:1;transform:scale(1)}
.hero__veil{
  position:absolute;inset:0;
  background:
    linear-gradient(100deg,rgba(6,26,44,.95) 0%,rgba(6,26,44,.86) 34%,rgba(6,26,44,.5) 62%,rgba(6,26,44,.2) 100%),
    linear-gradient(to top,rgba(6,26,44,.9),rgba(6,26,44,.15) 42%,transparent 70%);
}
.hero__content{position:relative;z-index:3;height:100%;display:flex;flex-direction:column;justify-content:center;color:#fff;padding-bottom:40px}

.hero__eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13.5px;letter-spacing:.08em;color:rgba(255,255,255,.82);
  margin-bottom:26px;
}
.hero__eyebrow .dot{
  width:8px;height:8px;border-radius:50%;background:var(--orange);
  box-shadow:0 0 0 4px rgba(232,112,42,.25);animation:pulse 2.4s infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 4px rgba(232,112,42,.25)}
  50%{box-shadow:0 0 0 9px rgba(232,112,42,0)}
}

.hero__title{
  font-size:clamp(2rem,4.6vw,4rem);
  line-height:1.18;letter-spacing:-.02em;
  margin-bottom:22px;text-shadow:0 2px 30px rgba(0,0,0,.35);
}
.hero__title span{
  font-weight:400;font-size:.62em;color:rgba(255,255,255,.86);
  display:inline-block;margin-top:10px;
}
.hero__sub{
  font-size:clamp(.95rem,1.15vw,1.1rem);color:rgba(255,255,255,.78);
  max-width:640px;line-height:1.85;margin-bottom:38px;
}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap}

.hero__arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:4;
  width:52px;height:52px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.22);
  backdrop-filter:blur(6px);
  transition:background .25s var(--ease),transform .25s var(--ease),border-color .25s;
}
.hero__arrow svg{width:22px;height:22px;fill:#fff}
.hero__arrow:hover{background:var(--orange);border-color:var(--orange);transform:translateY(-50%) scale(1.06)}
.hero__arrow--prev{left:28px}
.hero__arrow--next{right:28px}

.hero__dots{position:absolute;left:0;right:0;bottom:38px;z-index:4;display:flex;justify-content:center;gap:10px}
.hero__dot{
  width:34px;height:3px;border-radius:3px;background:rgba(255,255,255,.28);
  transition:background .3s,width .3s var(--ease);
}
.hero__dot.is-active{background:var(--orange);width:56px}

.hero__scroll{
  position:absolute;left:50%;bottom:18px;transform:translateX(-50%);z-index:4;
  width:22px;height:36px;border:1.5px solid rgba(255,255,255,.35);border-radius:12px;
}
.hero__scroll span{
  position:absolute;left:50%;top:7px;width:3px;height:7px;margin-left:-1.5px;
  border-radius:2px;background:rgba(255,255,255,.75);
  animation:scrollHint 1.8s infinite;
}
@keyframes scrollHint{
  0%{opacity:0;transform:translateY(0)}
  40%{opacity:1}
  100%{opacity:0;transform:translateY(12px)}
}

/* ---------- 数据条 ---------- */
.stats{background:var(--navy-800);color:#fff;position:relative;z-index:5}
.stats::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;pointer-events:none;
}
.stats__grid{
  position:relative;display:grid;grid-template-columns:repeat(4,1fr);
  padding-top:52px;padding-bottom:52px;
}
.stat{padding:0 28px;border-left:1px solid rgba(255,255,255,.1)}
.stat:first-child{border-left:0;padding-left:0}
.stat__num{
  display:flex;align-items:baseline;gap:4px;
  font-size:clamp(2.2rem,3.6vw,3.1rem);font-weight:800;letter-spacing:-.03em;
  color:#fff;line-height:1;font-variant-numeric:tabular-nums;
}
.stat__num i{font-style:normal;font-size:.42em;font-weight:600;color:var(--orange)}
.stat__label{margin-top:14px;font-size:15px;color:rgba(255,255,255,.9);font-weight:600}
.stat__note{display:block;font-style:normal;font-size:12.5px;font-weight:400;color:rgba(255,255,255,.48);margin-top:6px;line-height:1.6}

/* ---------- 通用区块 ---------- */
.section{padding:110px 0;position:relative}
.section--paper{background:var(--paper)}
.section--paper::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(16,58,94,.055) 1px,transparent 1px);
  background-size:22px 22px;
}
.section--dark{background:var(--navy-900);color:#fff}
.section--dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
}
.section > .wrap{position:relative;z-index:1}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--orange);margin-bottom:16px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--orange);border-radius:2px}
.eyebrow--light{color:#F09060}
.eyebrow--light::before{background:#F09060}

.section__title{
  font-size:clamp(1.6rem,2.7vw,2.4rem);
  line-height:1.32;color:var(--navy-800);letter-spacing:-.02em;
  max-width:820px;
}
.section--dark .section__title,.section--contact .section__title{color:#fff}
.section__lead{margin-top:18px;font-size:16px;color:var(--steel-600);max-width:680px}
.section__head{margin-bottom:54px}
.section__head--row{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}
.section__hint{font-size:13px;color:var(--steel-500);padding-bottom:6px}

/* ---------- 关于我们 ---------- */
.about{display:grid;grid-template-columns:1fr 1.06fr;gap:64px;align-items:start}
.about__media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.about__media img{width:100%;aspect-ratio:3/4;object-fit:cover;object-position:center 55%}
.about__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(6,26,44,.5),transparent 50%);
}
.about__badge{
  position:absolute;right:22px;bottom:22px;z-index:2;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  width:104px;height:104px;border-radius:50%;
  background:var(--orange);color:#fff;line-height:1.2;
  box-shadow:0 12px 30px rgba(232,112,42,.4);
}
.about__badge strong{font-size:26px;font-weight:800;letter-spacing:-.02em}
.about__badge span{font-size:12px;opacity:.9}

.about__text > p{color:var(--steel-600);margin-top:18px;line-height:1.9}
.about__text > p:first-of-type{margin-top:22px}

.about__facts{
  display:grid;grid-template-columns:1fr 1fr;gap:1px;margin-top:34px;
  background:var(--line);border-radius:var(--r-md);overflow:hidden;
}
.about__facts li{background:#fff;padding:16px 18px}
.about__facts span{display:block;font-size:12.5px;color:var(--steel-500);letter-spacing:.04em}
.about__facts strong{display:block;margin-top:6px;font-size:14.5px;color:var(--navy-800);font-weight:700}

.about__team{margin-top:34px}
.about__team h3{font-size:15px;color:var(--navy-800);letter-spacing:.06em;margin-bottom:14px}
.team{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.team__item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 12px;text-align:center;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;
}
.team__item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:transparent}
.team__item b{display:block;font-size:26px;font-weight:800;color:var(--navy-800);line-height:1}
.team__item b i{font-style:normal;font-size:.55em;color:var(--orange)}
.team__item span{display:block;margin-top:8px;font-size:12.5px;color:var(--steel-500)}

/* ---------- 业务卡片 ---------- */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{
  background:#fff;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:transparent}
.card__img{overflow:hidden;aspect-ratio:4/3;background:var(--paper-2)}
.card__img img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.card:hover .card__img img{transform:scale(1.07)}
.card__body{padding:26px 24px 28px;flex:1;display:flex;flex-direction:column}
.card__body h3{font-size:18px;color:var(--navy-800);margin-bottom:12px}
.card__body p{font-size:14.5px;color:var(--steel-600);line-height:1.8;flex:1}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tags li{
  font-size:12px;color:var(--navy-700);background:var(--paper);
  padding:4px 10px;border-radius:999px;letter-spacing:.02em;
}

.process{margin-top:56px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:34px 38px}
.process__title{font-size:15px;letter-spacing:.1em;color:var(--steel-500);font-weight:600;margin-bottom:22px}
.process__list{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.process__list li{
  position:relative;padding:18px 14px;border-radius:var(--r-md);
  background:linear-gradient(160deg,var(--paper) 0%,#fff 100%);
  border:1px solid var(--line);
}
.process__list b{display:block;font-size:12px;color:var(--orange);letter-spacing:.1em;margin-bottom:6px}
.process__list span{font-size:13.5px;color:var(--navy-800);font-weight:600;line-height:1.5}

/* ---------- 优势与时间轴 ---------- */
.adv{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(255,255,255,.1);border-radius:var(--r-lg);overflow:hidden}
.adv__col{background:var(--navy-800);padding:34px 30px;transition:background .3s}
.adv__col:hover{background:var(--navy-700)}
.adv__col h3{font-size:17px;color:#fff;margin-bottom:12px;display:flex;align-items:center;gap:10px}
.adv__col h3::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange);flex:none}
.adv__col p{font-size:14.5px;color:rgba(255,255,255,.66);line-height:1.85}

.timeline{
  margin-top:70px;display:grid;grid-template-columns:repeat(6,1fr);gap:0;
  border-top:1px solid rgba(255,255,255,.14);padding-top:34px;
}
.timeline li{position:relative;padding-right:18px}
.timeline li::before{
  content:"";position:absolute;left:0;top:-39px;width:10px;height:10px;border-radius:50%;
  background:var(--orange);box-shadow:0 0 0 4px rgba(232,112,42,.22);
}
.timeline__year{display:block;font-size:22px;font-weight:800;color:#fff;letter-spacing:-.02em;margin-bottom:10px}
.timeline__body h4{font-size:14px;color:var(--orange);margin-bottom:8px;font-weight:700}
.timeline__body p{font-size:13px;color:rgba(255,255,255,.55);line-height:1.7}

/* ---------- 荣誉与知识产权 ---------- */
.honors{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.honor{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;position:relative;overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.honor::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--orange);
  transform:scaleY(0);transform-origin:top;transition:transform .4s var(--ease);
}
.honor:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.honor:hover::before{transform:scaleY(1)}
.honor b{display:inline-block;font-size:12px;letter-spacing:.12em;color:var(--orange);font-weight:700;margin-bottom:10px}
.honor span{display:block;font-size:16.5px;font-weight:700;color:var(--navy-800);margin-bottom:8px}
.honor i{font-style:normal;font-size:12.5px;color:var(--steel-500);line-height:1.6}

.ip{margin-top:44px;background:var(--navy-800);border-radius:var(--r-lg);padding:38px;color:#fff;position:relative;overflow:hidden}
.ip::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,112,42,.22),transparent 70%);
}
.ip__head{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:26px}
.ip__head h3{font-size:20px}
.ip__head p{font-size:14px;color:rgba(255,255,255,.55)}
.ip__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;z-index:1}
.ip__item{border-left:1px solid rgba(255,255,255,.14);padding-left:18px}
.ip__item b{display:block;font-size:34px;font-weight:800;line-height:1;color:#fff}
.ip__item span{display:block;margin-top:8px;font-size:14px;color:var(--orange);font-weight:600}
.ip__item i{display:block;margin-top:10px;font-style:normal;font-size:12.5px;color:rgba(255,255,255,.5);line-height:1.6}

/* ---------- 图库 ---------- */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:230px;gap:16px}
.gallery__item{
  position:relative;margin:0;overflow:hidden;border-radius:var(--r-md);
  cursor:zoom-in;background:var(--paper-2);
}
.gallery__item--wide{grid-column:span 2}
.gallery__item img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease),filter .4s}
.gallery__item:hover img{transform:scale(1.06)}
.gallery__item figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:34px 18px 14px;
  font-size:13.5px;font-weight:600;color:#fff;letter-spacing:.02em;
  background:linear-gradient(to top,rgba(6,26,44,.82),transparent);
  transform:translateY(4px);opacity:.92;transition:transform .35s var(--ease)
}
.gallery__item:hover figcaption{transform:translateY(0)}

/* 大图查看器 */
.lightbox{
  position:fixed;inset:0;z-index:200;display:none;
  background:rgba(4,16,28,.94);
  backdrop-filter:blur(6px);
  padding:5vh 4vw;
}
.lightbox.is-open{display:grid;place-items:center}
.lightbox img{max-width:min(1200px,92vw);max-height:88vh;border-radius:var(--r-md);box-shadow:0 30px 80px rgba(0,0,0,.5)}
.lightbox__close{
  position:absolute;right:26px;top:22px;width:46px;height:46px;border-radius:50%;
  background:rgba(255,255,255,.12);color:#fff;font-size:26px;line-height:1;
  display:grid;place-items:center;transition:background .25s;
}
.lightbox__close:hover{background:var(--orange)}
.lightbox__cap{position:absolute;left:0;right:0;bottom:24px;text-align:center;color:rgba(255,255,255,.7);font-size:14px}

/* ---------- 产品案例 ---------- */
.case-feature{display:grid;grid-template-columns:1.15fr 1fr;gap:56px;align-items:center}
.case-feature__media{
  margin:0;position:relative;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow-lg);background:var(--paper-2);
}
.case-feature__media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .8s var(--ease)}
.case-feature__media:hover img{transform:scale(1.04)}
.case-feature__media figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:40px 22px 16px;
  font-size:13px;color:#fff;background:linear-gradient(to top,rgba(6,26,44,.8),transparent);
}
.case-feature__text h3{font-size:20px;color:var(--navy-800);margin-bottom:20px}
.parts{display:grid;gap:2px;background:var(--line);border-radius:var(--r-md);overflow:hidden}
.parts li{background:#fff;padding:16px 20px;display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px}
.parts li b{font-size:15.5px;color:var(--navy-800);flex:none;position:relative;padding-left:16px}
.parts li b::before{content:"";position:absolute;left:0;top:.55em;width:6px;height:6px;border-radius:50%;background:var(--orange)}
.parts li span{font-size:13.5px;color:var(--steel-600);flex:1 1 220px}
.case-note{margin-top:18px;font-size:13px;color:var(--steel-500)}

/* ---------- 新闻 ---------- */
.news{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news__item{
  display:flex;gap:20px;padding:28px 26px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);transition:transform .35s var(--ease),box-shadow .35s var(--ease)
}
.news__item:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.news__item time{
  font-size:26px;font-weight:800;color:var(--orange);letter-spacing:-.03em;line-height:1;flex:none;
  font-variant-numeric:tabular-nums;
}
.news__item h3{font-size:16px;color:var(--navy-800);margin-bottom:10px;line-height:1.5}
.news__item p{font-size:13.5px;color:var(--steel-600);line-height:1.8}

/* ---------- 联系 ---------- */
.section--contact{
  background:linear-gradient(135deg,var(--navy-900) 0%,var(--navy-800) 55%,var(--navy-700) 100%);
  color:#fff;position:relative;overflow:hidden;
}
.section--contact::after{
  content:"";position:absolute;right:-10%;top:-20%;width:60%;height:140%;
  background:radial-gradient(circle,rgba(232,112,42,.14),transparent 62%);
  pointer-events:none;
}
.contact{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.contact__lead{margin-top:18px;color:rgba(255,255,255,.66);max-width:460px}
.contact__list{margin:38px 0 40px;display:grid;gap:22px}
.contact__list li{display:flex;gap:16px;align-items:flex-start}
.contact__icon{
  width:42px;height:42px;border-radius:12px;flex:none;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  display:grid;place-items:center;
}
.contact__icon svg{width:19px;height:19px;fill:var(--orange)}
.contact__list b{display:block;font-size:12.5px;letter-spacing:.1em;color:rgba(255,255,255,.45);margin-bottom:4px;font-weight:600}
.contact__list a{font-size:18px;font-weight:700;color:#fff;transition:color .25s}
.contact__list a:hover{color:var(--orange)}
.contact__sub{font-size:13px;color:rgba(255,255,255,.5)}
.contact__list div{font-size:15px;color:rgba(255,255,255,.9);line-height:1.7}

.map{
  position:relative;aspect-ratio:4/3.6;border-radius:var(--r-lg);
  background:linear-gradient(160deg,#0D2F4E,#0A2338);
  border:1px solid rgba(255,255,255,.1);overflow:hidden;
  box-shadow:var(--shadow-lg);
}
.map__grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(circle at 50% 45%,#000 20%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 45%,#000 20%,transparent 72%);
}
.map__pin{
  position:absolute;left:50%;top:42%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:50%;
  background:var(--orange);display:grid;place-items:center;
  box-shadow:0 0 0 12px rgba(232,112,42,.16),0 0 0 26px rgba(232,112,42,.07);
  animation:pinFloat 3s ease-in-out infinite;
}
.map__pin svg{width:26px;height:26px;fill:#fff}
@keyframes pinFloat{0%,100%{transform:translate(-50%,-50%)}50%{transform:translate(-50%,-56%)}}
.map__card{
  position:absolute;left:20px;right:20px;bottom:20px;
  background:rgba(255,255,255,.96);color:var(--navy-800);
  border-radius:var(--r-md);padding:16px 18px;line-height:1.6;
}
.map__card b{display:block;font-size:14.5px;margin-bottom:4px}
.map__card span{font-size:13px;color:var(--steel-600)}
.map__card em{display:block;margin-top:8px;font-style:normal;font-size:11.5px;color:var(--steel-500)}

/* ---------- 页脚 ---------- */
.footer{background:var(--navy-900);color:rgba(255,255,255,.55);padding:44px 0 34px;border-top:1px solid rgba(255,255,255,.06)}
.footer__inner{display:flex;align-items:center;gap:32px;flex-wrap:wrap;justify-content:space-between}
.footer__brand{display:flex;align-items:center;gap:14px}
.footer__brand img{width:42px;height:42px;border-radius:50%;background:#fff}
.footer__brand strong{display:block;color:#fff;font-size:14.5px;letter-spacing:.02em}
.footer__brand span{display:block;font-size:12px;color:rgba(255,255,255,.42);margin-top:3px}
.footer__nav{display:flex;gap:26px;font-size:13.5px}
.footer__nav a:hover{color:var(--orange)}
.footer__legal{display:flex;flex-direction:column;gap:4px;font-size:12.5px;text-align:right;color:rgba(255,255,255,.38)}

/* ---------- Toast ---------- */
.toast{
  position:fixed;left:50%;bottom:34px;transform:translate(-50%,20px);
  background:var(--navy-800);color:#fff;padding:12px 22px;border-radius:999px;
  font-size:14px;box-shadow:var(--shadow-lg);
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease),transform .3s var(--ease);
  z-index:300;
}
.toast.is-show{opacity:1;transform:translate(-50%,0)}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .process__list{grid-template-columns:repeat(3,1fr)}
  .timeline{grid-template-columns:repeat(3,1fr);gap:36px 0}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .honors{grid-template-columns:repeat(2,1fr)}
  .ip__grid{grid-template-columns:repeat(2,1fr);gap:26px}
  .about{grid-template-columns:1fr;gap:40px}
  .about__media{min-height:0}
  .about__media img{height:auto;aspect-ratio:16/9}
  .contact{grid-template-columns:1fr;gap:44px}
  .case-feature{grid-template-columns:1fr;gap:36px}
  .stats__grid{grid-template-columns:repeat(2,1fr);gap:36px 0}
  .stat:nth-child(3){border-left:0;padding-left:0}
}

@media (max-width:860px){
  :root{--header-h:72px}
  .topbar__right{display:none}
  .topbar__inner{justify-content:center;gap:14px}
  .topbar__item{font-size:12px;gap:5px}
  .header__actions{display:none}
  .burger{display:block}
  .brand{flex:1 1 auto;max-width:none;min-width:0;gap:9px}
  .brand__logo{width:42px;height:42px}
  .brand__text em{display:none}
  .brand__text strong{font-size:14px;overflow:hidden;text-overflow:ellipsis;max-width:100%}

  .nav{
    position:fixed;inset:var(--header-h) 0 auto 0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(10,37,64,.98);
    padding:12px 24px 26px;
    border-bottom:1px solid rgba(255,255,255,.1);
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .28s var(--ease),transform .28s var(--ease);
    max-height:calc(100vh - var(--header-h));overflow:auto;
  }
  .nav.is-open{opacity:1;transform:none;pointer-events:auto}
  .nav__link{padding:14px 4px;border-bottom:1px solid rgba(255,255,255,.07);border-radius:0;color:rgba(255,255,255,.85)}
  .nav__link::after{display:none}
  .nav__link.is-active{color:var(--orange)}
  .nav__actions--mobile{display:flex;gap:12px;margin-top:20px}
  .header.is-solid .nav{background:rgba(255,255,255,.99)}
  .header.is-solid .nav__link{color:var(--steel-600);border-bottom-color:var(--line)}

  .hero{height:auto;min-height:0;padding:88px 0 96px}
  .hero__content{height:auto}
  .hero__title{font-size:clamp(1.7rem,7vw,2.4rem)}
  .hero__sub{font-size:14.5px;margin-bottom:30px}
  .hero__arrow{display:none}
  .hero__scroll{display:none}
  .hero__dots{bottom:22px}

  .section{padding:74px 0}
  .section__head{margin-bottom:38px}
  .stats__grid{padding-top:38px;padding-bottom:38px}
  .stat{padding:0 18px}
  .process{padding:24px 20px}
  .process__list{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:1fr}
  .cases,.news{grid-template-columns:1fr}
  .adv{grid-template-columns:1fr}
  .about__facts{grid-template-columns:1fr}
  .team{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:1fr;grid-auto-rows:210px}
  .gallery__item--wide{grid-column:span 1}
  .timeline{grid-template-columns:repeat(2,1fr);gap:34px 0}
  .footer__inner{flex-direction:column;align-items:flex-start;gap:22px}
  .footer__legal{text-align:left}
}

@media (max-width:520px){
  .wrap{padding:0 18px}
  .honors{grid-template-columns:1fr}
  .ip__grid{grid-template-columns:1fr}
  .ip{padding:26px 22px}
  .timeline{grid-template-columns:1fr}
  .timeline li{padding-right:0}
  .hero__cta .btn{width:100%}
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 打印 ---------- */
@media print{
  .topbar,.header,.hero,.stats,.footer,.map,.toast{display:none}
  body{color:#000}
  .section{padding:20px 0}
}