/* ============================================================
   禾森烨盛环保官网 · 设计系统
   高端工业极简 · 冷调浅底 + 深海蓝世界色 + 工业青强调
   ============================================================ */

:root{
  /* 四槽色板 */
  --canvas:        #F2F5F7;
  --canvas-2:      #E9EEF2;
  --card:          #FFFFFF;
  --world:         #0B1F33;
  --world-2:       #0F2A44;
  --world-3:       #143650;
  --accent:        #0E7C8A;
  --accent-strong: #0A6673;
  --accent-soft:   #DFEEF1;
  --ink:           #17232E;
  --muted:         #5E6E7C;
  --line:          #D9E2E8;
  --line-dark:     rgba(255,255,255,.12);
  --white:         #FFFFFF;

  /* 圆角角色 */
  --r-shell:   26px;
  --r-card:    14px;
  --r-control: 8px;
  --r-pill:    999px;

  /* 阴影（多层有色） */
  --shadow-card:  0 1px 2px rgba(11,31,51,.05),
                  0 10px 24px -8px rgba(11,31,51,.10),
                  0 32px 64px -28px rgba(11,31,51,.14);
  --shadow-float: 0 4px 12px rgba(11,31,51,.08),
                  0 24px 48px -14px rgba(11,31,51,.20);
  --shadow-dark:  0 24px 60px -20px rgba(0,0,0,.55),
                  inset 0 1px 0 rgba(255,255,255,.06);

  /* 字体 */
  --font:        "PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-display:"Bahnschrift","DIN Alternate","Arial Narrow","Helvetica Neue",Arial,sans-serif;
  --font-mono:   "Cascadia Mono","Consolas","Courier New",monospace;

  /* 字阶（有断崖） */
  --fs-display: clamp(2.6rem, 5.2vw, 4.05rem);
  --fs-h1:      clamp(1.9rem, 3.3vw, 2.7rem);
  --fs-h2:      clamp(1.55rem, 2.6vw, 2.2rem);
  --fs-h3:      clamp(1.15rem, 1.6vw, 1.4rem);
  --fs-body:    1rem;
  --fs-lg:      1.0625rem;
  --fs-sm:      .875rem;
  --fs-xs:      .8125rem;

  --sec: clamp(3.6rem, 7vw, 6.2rem);
  --wrap: 1240px;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  font-size:var(--fs-body);
  line-height:1.75;
  color:var(--ink);
  background:var(--canvas);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,textarea,select{font-family:inherit;font-size:1rem}

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

/* ---------- 布局 ---------- */
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 clamp(20px,4vw,40px)}
.section{padding:var(--sec) 0;position:relative}

/* 分区标题 */
.sec-head{margin-bottom:clamp(1.8rem,3.4vw,2.8rem)}
.sec-head .kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:var(--fs-xs);font-weight:700;letter-spacing:.18em;
  color:var(--accent);text-transform:uppercase;font-family:var(--font-display);
}
.sec-head .kicker::before{content:"";width:26px;height:2px;background:var(--accent)}
.sec-head h2{font-size:var(--fs-h2);line-height:1.25;font-weight:800;letter-spacing:.01em;margin-top:.5rem}
.sec-head .sub{color:var(--muted);margin-top:.55rem;max-width:640px}
.sec-head.center{text-align:center}
.sec-head.center .kicker::before{display:none}
.sec-head.center .sub{margin-left:auto;margin-right:auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);
  font-size:var(--fs-sm);font-weight:700;letter-spacing:.02em;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
  white-space:nowrap;line-height:1.2;
}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -10px rgba(14,124,138,.55)}
.btn-primary:hover{background:var(--accent-strong);transform:translateY(-2px)}
.btn-ghost{border:1px solid rgba(255,255,255,.35);color:#fff;background:rgba(255,255,255,.04);backdrop-filter:blur(4px)}
.btn-ghost:hover{border-color:var(--accent);color:#fff;background:rgba(14,124,138,.18);transform:translateY(-2px)}
.btn-dark{background:var(--world);color:#fff}
.btn-dark:hover{background:var(--world-2);transform:translateY(-2px)}
.btn-soft{background:var(--accent-soft);color:var(--accent-strong)}
.btn-soft:hover{background:var(--accent);color:#fff;transform:translateY(-2px)}
.btn-lg{padding:16px 34px;font-size:1rem}
.btn .arrow{transition:transform .25s ease}
.btn:hover .arrow{transform:translateX(4px)}

/* ---------- 顶栏 ---------- */
.topbar{background:var(--world);color:rgba(255,255,255,.82);font-size:var(--fs-xs)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;min-height:38px;gap:16px}
.topbar a{display:inline-flex;align-items:center;gap:6px;transition:color .2s}
.topbar a:hover{color:#fff}
.topbar .tb-left{display:flex;gap:22px;flex-wrap:wrap}
.topbar .tb-left svg{width:14px;height:14px;color:var(--accent)}
.topbar .tb-right{display:flex;gap:18px}
.topbar .tb-right a{color:rgba(255,255,255,.6)}
.topbar .tb-right a:hover{color:#fff}

/* ---------- 主头部 ---------- */
.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:box-shadow .3s}
.header.scrolled{box-shadow:0 8px 30px -14px rgba(11,31,51,.18)}
.header .wrap{display:flex;align-items:center;justify-content:space-between;height:76px;gap:20px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand .logo-mark{width:44px;height:44px;flex-shrink:0}
.brand .b-name{font-size:1.28rem;font-weight:800;letter-spacing:.04em;color:var(--ink);line-height:1.15}
.brand .b-en{font-size:.62rem;letter-spacing:.32em;color:var(--accent);font-family:var(--font-display);text-transform:uppercase;margin-top:2px}

.nav{display:flex;align-items:center;gap:4px}
.nav a{
  position:relative;padding:10px 16px;font-size:var(--fs-sm);font-weight:600;color:var(--ink);
  border-radius:var(--r-pill);transition:color .2s,background .2s;
}
.nav a::after{
  content:"";position:absolute;left:16px;right:16px;bottom:4px;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav a:hover{color:var(--accent)}
.nav a:hover::after,.nav a.on::after{transform:scaleX(1)}
.nav a.on{color:var(--accent);font-weight:700}
.header .cta-wrap{display:flex;align-items:center;gap:10px}
.header .cta-phone{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--ink)}
.header .cta-phone svg{width:18px;height:18px;color:var(--accent)}
.header .cta-phone b{font-size:1.02rem;letter-spacing:.02em}

/* 移动菜单按钮 */
.burger{display:none;width:42px;height:42px;border-radius:var(--r-control);border:1px solid var(--line);flex-direction:column;align-items:center;justify-content:center;gap:5px;background:var(--card)}
.burger span{width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:min(92vh,860px);display:flex;align-items:center;overflow:hidden;background:var(--world);color:#fff}
.hero .hero-bg{position:absolute;inset:0;z-index:0}
.hero .hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.55;transform:scale(1.06)}
.hero .scrim{position:absolute;inset:0;z-index:1;background:
  linear-gradient(90deg,rgba(11,31,51,.94) 0%,rgba(11,31,51,.72) 45%,rgba(11,31,51,.35) 100%),
  linear-gradient(180deg,rgba(11,31,51,.35) 0%,transparent 30%,rgba(11,31,51,.6) 88%,var(--world) 100%)}
.hero .hero-in{position:relative;z-index:2;width:100%;padding:clamp(70px,10vh,110px) 0 clamp(40px,6vh,70px)}
.hero .kicker{
  display:inline-flex;align-items:center;gap:10px;padding:7px 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.06);backdrop-filter:blur(6px);
  font-size:var(--fs-xs);letter-spacing:.16em;color:rgba(255,255,255,.9);font-family:var(--font-display);
  text-transform:uppercase;margin-bottom:26px;
}
.hero .kicker::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(14,124,138,.25)}
.hero h1{font-size:var(--fs-display);line-height:1.08;font-weight:800;letter-spacing:.01em;max-width:820px}
.hero h1 .hl{color:var(--accent);position:relative;white-space:nowrap}
.hero h1 .hl svg{position:absolute;left:0;right:0;bottom:-6px;width:100%;height:10px;color:var(--accent);opacity:.45}
.hero .sub{font-size:var(--fs-lg);color:rgba(255,255,255,.78);max-width:620px;margin-top:24px;line-height:1.9}
.hero .cta-row{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero .facts{
  margin-top:clamp(44px,7vh,72px);display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1px solid var(--line-dark);
}
.hero .fact{padding:22px 18px 4px;border-left:1px solid var(--line-dark)}
.hero .fact:first-child{border-left:0}
.hero .fact .n{font-family:var(--font-display);font-size:clamp(1.3rem,2vw,1.7rem);font-weight:600;letter-spacing:.08em;color:#fff}
.hero .fact .n i{font-style:normal;color:var(--accent)}
.hero .fact .l{font-size:var(--fs-xs);color:rgba(255,255,255,.6);margin-top:6px;letter-spacing:.06em}

/* ---------- 应用领域 ---------- */
.fields{background:var(--canvas)}
.fields-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.field-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px 22px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
  position:relative;overflow:hidden;
}
.field-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .3s ease}
.field-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:rgba(14,124,138,.35)}
.field-card:hover::before{transform:scaleY(1)}
.field-card .fc-top{display:flex;align-items:center;gap:14px;margin-bottom:12px}
.field-card .fc-ico{width:46px;height:46px;border-radius:12px;background:var(--accent-soft);color:var(--accent-strong);display:grid;place-items:center;flex-shrink:0}
.field-card .fc-ico svg{width:24px;height:24px}
.field-card h3{font-size:1.12rem;font-weight:800}
.field-card .fc-desc{font-size:var(--fs-sm);color:var(--muted);line-height:1.7}
.field-card .fc-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.field-card .fc-tags a{
  font-size:.74rem;color:var(--accent-strong);background:var(--accent-soft);
  padding:4px 11px;border-radius:var(--r-pill);transition:.2s;font-weight:600;
}
.field-card .fc-tags a:hover{background:var(--accent);color:#fff}

/* ---------- 产品网格 ---------- */
.products-sec{background:var(--card)}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.p-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .3s ease,box-shadow .3s ease;
}
.p-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-card)}
.p-card .p-img{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--canvas-2)}
.p-card .p-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.p-card:hover .p-img img{transform:scale(1.06)}
.p-card .p-cat{
  position:absolute;left:12px;top:12px;z-index:2;background:rgba(11,31,51,.72);color:#fff;
  font-size:.72rem;padding:4px 11px;border-radius:var(--r-pill);backdrop-filter:blur(4px);letter-spacing:.04em;
}
.p-card .p-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.p-card h3{font-size:1.05rem;font-weight:800;line-height:1.4}
.p-card .p-en{font-family:var(--font-display);font-size:.68rem;letter-spacing:.14em;color:var(--accent);text-transform:uppercase;margin-top:3px}
.p-card .p-sum{font-size:var(--fs-sm);color:var(--muted);margin-top:10px;line-height:1.75;flex:1}
.p-card .p-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:var(--fs-sm);font-weight:700;color:var(--accent-strong)}
.p-card .p-link svg{width:15px;height:15px;transition:transform .25s}
.p-card:hover .p-link svg{transform:translateX(4px)}
.grid-more{text-align:center;margin-top:36px}

/* ---------- 全链路服务（深色段） ---------- */
.services{background:var(--world);color:#fff;overflow:hidden;position:relative}
.services::after{content:"";position:absolute;right:-140px;top:-140px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(14,124,138,.22),transparent 65%)}
.services .sec-head .kicker{color:#53C2D0}
.services .sec-head .sub{color:rgba(255,255,255,.62)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;z-index:1}
.step{
  background:rgba(255,255,255,.045);border:1px solid var(--line-dark);border-radius:var(--r-shell);
  padding:28px 24px;transition:background .3s,border-color .3s,transform .3s;backdrop-filter:blur(4px);
}
.step:hover{background:rgba(14,124,138,.14);border-color:rgba(83,194,208,.4);transform:translateY(-4px)}
.step .s-num{font-family:var(--font-display);font-size:2.1rem;font-weight:600;color:var(--accent);line-height:1}
.step .s-num i{font-style:normal;font-size:.9rem;letter-spacing:.2em;color:rgba(255,255,255,.4);margin-left:6px}
.step h3{font-size:1.08rem;font-weight:800;margin-top:16px}
.step p{font-size:var(--fs-sm);color:rgba(255,255,255,.68);margin-top:8px;line-height:1.75}

/* 工艺技术（亮段，左右分栏） */
.tech{background:var(--canvas)}
.tech-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,60px);align-items:center}
.tech-media{position:relative;border-radius:var(--r-shell);overflow:hidden;box-shadow:var(--shadow-card)}
.tech-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3.2}
.tech-media .badge{
  position:absolute;left:20px;bottom:20px;background:rgba(11,31,51,.82);color:#fff;backdrop-filter:blur(6px);
  padding:12px 18px;border-radius:14px;font-size:var(--fs-sm);letter-spacing:.08em;font-family:var(--font-display);
}
.tech-list{display:flex;flex-direction:column;gap:16px;margin-top:22px}
.tech-item{display:flex;gap:16px;align-items:flex-start}
.tech-item .t-ico{width:42px;height:42px;flex-shrink:0;border-radius:12px;background:var(--accent-soft);color:var(--accent-strong);display:grid;place-items:center}
.tech-item .t-ico svg{width:22px;height:22px}
.tech-item h4{font-size:1.02rem;font-weight:800}
.tech-item p{font-size:var(--fs-sm);color:var(--muted);margin-top:4px;line-height:1.75}

/* ---------- 关于 ---------- */
.about{background:var(--card)}
.about-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:clamp(28px,5vw,60px);align-items:center}
.about-media{position:relative;border-radius:var(--r-shell);overflow:hidden;box-shadow:var(--shadow-card)}
.about-media img{width:100%;aspect-ratio:4/3.4;object-fit:cover}
.about-media .frame{position:absolute;inset:0;border:1px solid rgba(255,255,255,.25);border-radius:inherit;pointer-events:none}
.about-txt p{color:var(--muted);margin-top:16px;line-height:1.95}
.about-points{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px}
.ap{display:flex;gap:12px;align-items:center;background:var(--canvas);border:1px solid var(--line);border-radius:var(--r-control);padding:12px 14px;font-weight:700;font-size:var(--fs-sm)}
.ap svg{width:20px;height:20px;color:var(--accent);flex-shrink:0}

/* ---------- 新闻 ---------- */
.news-sec{background:var(--canvas)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.n-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px 22px;display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s,border-color .3s;gap:10px}
.n-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:rgba(14,124,138,.3)}
.n-card .n-meta{display:flex;align-items:center;gap:10px;font-size:var(--fs-xs);color:var(--muted)}
.n-card .n-cat{color:var(--accent-strong);background:var(--accent-soft);padding:2px 10px;border-radius:var(--r-pill);font-weight:600}
.n-card h3{font-size:1.04rem;font-weight:800;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.n-card p{font-size:var(--fs-sm);color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.n-card .n-link{margin-top:8px;font-size:var(--fs-sm);font-weight:700;color:var(--accent-strong);display:inline-flex;align-items:center;gap:6px}

/* ---------- FAQ ---------- */
.faq{background:var(--card)}
.faq-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(28px,5vw,60px)}
.faq-side .sec-head{margin-bottom:0}
.faq-side p{color:var(--muted)}
.faq-side .btn{margin-top:20px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:var(--r-control);background:var(--canvas);overflow:hidden;transition:border-color .3s}
.faq-item.open{border-color:rgba(14,124,138,.4);background:var(--card)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:17px 20px;text-align:left;font-size:1rem;font-weight:700;color:var(--ink)}
.faq-q .q-ico{width:26px;height:26px;border-radius:50%;border:1.5px solid var(--line);display:grid;place-items:center;flex-shrink:0;color:var(--accent);transition:transform .3s,background .3s,color .3s}
.faq-item.open .q-ico{transform:rotate(45deg);background:var(--accent);border-color:var(--accent);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 20px 18px;color:var(--muted);font-size:var(--fs-sm);line-height:1.85}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--world);color:#fff;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 300px at 80% 20%,rgba(14,124,138,.28),transparent 60%)}
.cta-band .wrap{position:relative;display:flex;align-items:center;justify-content:space-between;gap:28px;padding-top:clamp(44px,7vw,64px);padding-bottom:clamp(44px,7vw,64px)}
.cta-band h2{font-size:var(--fs-h2);font-weight:800;line-height:1.3}
.cta-band p{color:rgba(255,255,255,.7);margin-top:8px}
.cta-band .cta-phones{display:flex;gap:14px;flex-wrap:wrap}
.cta-phone-card{border:1px solid var(--line-dark);background:rgba(255,255,255,.05);border-radius:var(--r-control);padding:14px 20px;text-align:center;min-width:150px}
.cta-phone-card .l{font-size:var(--fs-xs);color:rgba(255,255,255,.55)}
.cta-phone-card b{font-size:1.08rem;letter-spacing:.02em;color:#fff;display:block;margin-top:3px;font-family:var(--font-display)}

/* ---------- 页脚 ---------- */
.footer{background:var(--world);color:rgba(255,255,255,.72);border-top:1px solid rgba(255,255,255,.06)}
.footer .f-top{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:clamp(24px,4vw,48px);padding:clamp(40px,6vw,64px) 0 36px}
.footer h4{color:#fff;font-size:1rem;font-weight:800;margin-bottom:16px}
.footer .f-brand .brand .b-name{color:#fff}
.footer .f-brand p{font-size:var(--fs-sm);line-height:1.85;margin-top:14px;max-width:320px}
.footer .f-links li{margin-bottom:9px}
.footer .f-links a{font-size:var(--fs-sm);display:inline-flex;align-items:center;gap:7px;transition:color .2s,padding-left .2s}
.footer .f-links a::before{content:"→";color:var(--accent);font-size:.72rem}
.footer .f-links a:hover{color:#fff;padding-left:4px}
.footer .f-contact li{display:flex;gap:10px;font-size:var(--fs-sm);margin-bottom:11px;line-height:1.6}
.footer .f-contact svg{width:16px;height:16px;color:var(--accent);flex-shrink:0;margin-top:3px}
.footer .f-contact a:hover{color:#fff}
.footer .f-qr{width:120px;height:120px;border-radius:var(--r-control);border:1px solid var(--line-dark);background:rgba(255,255,255,.04);display:grid;place-items:center;font-size:var(--fs-xs);color:rgba(255,255,255,.5)}
.footer .f-bottom{border-top:1px solid var(--line-dark);padding:18px 0;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:var(--fs-xs);color:rgba(255,255,255,.5)}
.footer .f-bottom a:hover{color:#fff}

/* ---------- AI 悬浮组件 ---------- */
.ai-widget{position:fixed;right:22px;bottom:22px;z-index:999}
.ai-btn{
  width:60px;height:60px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),#12A3B4);color:#fff;
  box-shadow:0 12px 30px -8px rgba(14,124,138,.6),0 4px 12px rgba(11,31,51,.18);
  transition:transform .3s,box-shadow .3s;position:relative;
}
.ai-btn:hover{transform:translateY(-3px) scale(1.04);box-shadow:0 16px 38px -8px rgba(14,124,138,.7)}
.ai-btn svg{width:27px;height:27px}
.ai-btn .pulse{position:absolute;inset:0;border-radius:50%;border:2px solid rgba(14,124,138,.6);animation:aiPulse 2.6s ease-out infinite}
@keyframes aiPulse{0%{transform:scale(1);opacity:.9}100%{transform:scale(1.55);opacity:0}}
.ai-panel{
  position:fixed;right:22px;bottom:94px;width:min(360px,calc(100vw - 40px));
  background:var(--card);border-radius:var(--r-shell);box-shadow:var(--shadow-float);
  border:1px solid var(--line);overflow:hidden;z-index:1000;
  transform:translateY(12px);opacity:0;pointer-events:none;transition:transform .3s ease,opacity .3s ease;
}
.ai-panel.show{transform:translateY(0);opacity:1;pointer-events:auto}
.ai-head{background:linear-gradient(135deg,var(--world),var(--world-2));color:#fff;padding:18px 20px;display:flex;align-items:center;gap:12px}
.ai-head .ai-avatar{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--accent),#12A3B4);display:grid;place-items:center;flex-shrink:0}
.ai-head .ai-avatar svg{width:21px;height:21px}
.ai-head h4{font-size:1rem;font-weight:800}
.ai-head p{font-size:var(--fs-xs);color:rgba(255,255,255,.65)}
.ai-close{margin-left:auto;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;color:rgba(255,255,255,.8);transition:.2s}
.ai-close:hover{background:rgba(255,255,255,.14);color:#fff}
.ai-body{padding:18px 20px;max-height:min(46vh,380px);overflow:auto}
.ai-body .ai-embed{display:none}
.ai-body.has-embed .ai-embed{display:block}
.ai-body.has-embed .ai-placeholder{display:none}
.ai-placeholder{text-align:center;padding:10px 4px}
.ai-placeholder .ph-ico{width:56px;height:56px;margin:0 auto 14px;border-radius:18px;background:var(--accent-soft);color:var(--accent-strong);display:grid;place-items:center}
.ai-placeholder .ph-ico svg{width:28px;height:28px}
.ai-placeholder p{color:var(--muted);font-size:var(--fs-sm);line-height:1.8}
.ai-placeholder .ph-actions{display:flex;flex-direction:column;gap:9px;margin-top:16px}
.ai-placeholder .ph-actions a{display:flex;align-items:center;justify-content:center;gap:8px;padding:11px;border-radius:var(--r-pill);font-size:var(--fs-sm);font-weight:700}
.ai-placeholder .ph-actions a svg{width:16px;height:16px}
.ai-tag{
  margin-top:14px;font-size:.7rem;color:var(--muted);text-align:center;
  display:flex;align-items:center;justify-content:center;gap:6px;
}
.ai-tag svg{width:12px;height:12px;color:var(--accent)}

/* ---------- 内页 Hero ---------- */
.page-hero{background:var(--world);color:#fff;position:relative;overflow:hidden;padding:clamp(52px,8vw,84px) 0 clamp(40px,6vw,60px)}
.page-hero::before{content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(14,124,138,.2),transparent 65%)}
.page-hero .crumbs{font-size:var(--fs-xs);color:rgba(255,255,255,.6);margin-bottom:16px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.page-hero .crumbs a:hover{color:#fff}
.page-hero .crumbs .sep{color:rgba(255,255,255,.35)}
.page-hero h1{font-size:var(--fs-h1);font-weight:800;line-height:1.2}
.page-hero p{color:rgba(255,255,255,.7);margin-top:12px;max-width:680px}

/* ---------- 产品中心筛选 ---------- */
.filter-bar{background:var(--card);border:1px solid var(--line);border-radius:var(--r-shell);padding:20px 22px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-bottom:30px}
.filter-tabs{display:flex;flex-wrap:wrap;gap:8px}
.filter-tabs a{padding:8px 18px;border-radius:var(--r-pill);font-size:var(--fs-sm);font-weight:600;color:var(--muted);border:1px solid var(--line);transition:.2s;background:var(--canvas)}
.filter-tabs a:hover{color:var(--accent-strong);border-color:rgba(14,124,138,.4)}
.filter-tabs a.on{background:var(--accent);color:#fff;border-color:var(--accent)}
.filter-search{display:flex;align-items:center;gap:8px;background:var(--canvas);border:1px solid var(--line);border-radius:var(--r-pill);padding:8px 8px 8px 16px}
.filter-search svg{width:17px;height:17px;color:var(--muted)}
.filter-search input{border:0;background:none;outline:none;font-size:var(--fs-sm);width:150px;color:var(--ink)}
.filter-search input::placeholder{color:var(--muted)}

/* 空状态 */
.empty-state{text-align:center;padding:70px 20px;color:var(--muted);background:var(--card);border:1px dashed var(--line);border-radius:var(--r-shell)}
.empty-state svg{width:46px;height:46px;margin:0 auto 14px;color:var(--muted)}

/* ---------- 产品详情 ---------- */
.prod-detail{background:var(--card);padding:clamp(30px,4vw,44px);border-radius:var(--r-shell);border:1px solid var(--line)}
.pd-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(26px,4vw,48px)}
.pd-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--canvas-2);position:relative}
.pd-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.pd-media .pd-badge{position:absolute;left:16px;top:16px;background:rgba(11,31,51,.78);color:#fff;padding:6px 14px;border-radius:var(--r-pill);font-size:var(--fs-xs);backdrop-filter:blur(4px)}
.pd-info .pd-name{font-size:var(--fs-h3);font-weight:800;line-height:1.35}
.pd-info .pd-en{font-family:var(--font-display);letter-spacing:.16em;color:var(--accent);font-size:.72rem;text-transform:uppercase;margin-top:6px}
.pd-info .pd-sum{color:var(--muted);margin-top:16px;line-height:1.9}
.pd-feats{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.pd-feats li{display:flex;gap:11px;font-size:var(--fs-sm);align-items:flex-start}
.pd-feats svg{width:19px;height:19px;color:var(--accent);flex-shrink:0;margin-top:2px}
.pd-cta{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap}
.pd-share{margin-top:18px;font-size:var(--fs-xs);color:var(--muted);display:flex;align-items:center;gap:8px}
.pd-share a{color:var(--accent-strong);font-weight:600}
.pd-block{margin-top:clamp(34px,5vw,48px)}
.pd-block h3{font-size:1.2rem;font-weight:800;padding-bottom:14px;margin-bottom:20px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px}
.pd-block h3::before{content:"";width:4px;height:18px;border-radius:2px;background:var(--accent)}
.pd-desc p{color:var(--ink);line-height:2;margin-bottom:14px}
.spec-table{width:100%;border-collapse:collapse;font-size:var(--fs-sm)}
.spec-table th,.spec-table td{padding:12px 16px;border:1px solid var(--line);text-align:left;line-height:1.7}
.spec-table th{background:var(--canvas);width:150px;font-weight:700;color:var(--ink)}
.spec-table td{color:var(--muted)}
.pd-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.pd-tags span{background:var(--accent-soft);color:var(--accent-strong);padding:5px 13px;border-radius:var(--r-pill);font-size:var(--fs-xs);font-weight:600}
.related-title{display:flex;align-items:center;justify-content:space-between;margin:clamp(40px,5vw,56px) 0 24px}
.related-title h3{font-size:var(--fs-h3);font-weight:800}

/* 侧栏咨询卡 */
.pd-sidebar{display:flex;flex-direction:column;gap:16px}
.pd-contact-card{background:var(--world);color:#fff;border-radius:var(--r-card);padding:24px}
.pd-contact-card h4{font-size:1.05rem;font-weight:800}
.pd-contact-card ul{margin-top:14px;display:flex;flex-direction:column;gap:11px}
.pd-contact-card li{display:flex;gap:10px;font-size:var(--fs-sm);color:rgba(255,255,255,.78);align-items:flex-start}
.pd-contact-card svg{width:17px;height:17px;color:#53C2D0;flex-shrink:0;margin-top:2px}
.pd-contact-card a{color:#fff;font-weight:700}
.pd-contact-card .btn{width:100%;margin-top:16px}

/* ---------- 新闻列表 ---------- */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-row{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px 26px;display:flex;flex-direction:column;gap:10px;transition:transform .25s,box-shadow .25s,border-color .25s}
.news-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-card);border-color:rgba(14,124,138,.3)}
.news-row .n-meta{display:flex;align-items:center;gap:12px;font-size:var(--fs-xs);color:var(--muted)}
.news-row .n-cat{color:var(--accent-strong);background:var(--accent-soft);padding:2px 11px;border-radius:var(--r-pill);font-weight:600}
.news-row h2{font-size:1.18rem;font-weight:800;line-height:1.5}
.news-row p{color:var(--muted);font-size:var(--fs-sm);line-height:1.8}

/* 新闻详情 */
.article{background:var(--card);border:1px solid var(--line);border-radius:var(--r-shell);padding:clamp(26px,4vw,44px);max-width:860px;margin:0 auto}
.article h1{font-size:var(--fs-h1);font-weight:800;line-height:1.4}
.article .a-meta{display:flex;align-items:center;gap:14px;margin:18px 0 8px;font-size:var(--fs-xs);color:var(--muted);flex-wrap:wrap}
.article .a-meta .a-cat{color:var(--accent-strong);background:var(--accent-soft);padding:2px 11px;border-radius:var(--r-pill);font-weight:600}
.article .a-body p{line-height:2.05;color:#243342;margin-top:18px}
.article .a-body p:first-child{font-size:var(--fs-lg);color:var(--ink)}
.article .a-nav{display:flex;justify-content:space-between;gap:16px;margin-top:36px;padding-top:22px;border-top:1px solid var(--line);font-size:var(--fs-sm)}
.article .a-nav a{color:var(--accent-strong);font-weight:600}
.article .a-nav a:hover{color:var(--accent-strong)}

/* ---------- 联系我们 ---------- */
.contact-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:clamp(24px,4vw,44px);align-items:start}
.contact-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px}
.contact-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:22px}
.contact-card .cc-ico{width:44px;height:44px;border-radius:12px;background:var(--accent-soft);color:var(--accent-strong);display:grid;place-items:center;margin-bottom:12px}
.contact-card .cc-ico svg{width:22px;height:22px}
.contact-card .l{font-size:var(--fs-xs);color:var(--muted)}
.contact-card .v{font-weight:700;font-size:1.02rem;margin-top:3px;word-break:break-all}
.contact-card a.v:hover{color:var(--accent-strong)}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-shell);padding:clamp(22px,3vw,34px)}
.form-card h3{font-size:1.2rem;font-weight:800;margin-bottom:6px}
.form-card .fc-sub{color:var(--muted);font-size:var(--fs-sm);margin-bottom:20px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid .full{grid-column:1/-1}
.f-field label{display:block;font-size:var(--fs-xs);font-weight:700;color:var(--ink);margin-bottom:6px}
.f-field input,.f-field textarea,.f-field select{
  width:100%;border:1px solid var(--line);border-radius:var(--r-control);background:var(--canvas);
  padding:11px 14px;font-size:var(--fs-sm);outline:none;transition:border-color .2s,box-shadow .2s;color:var(--ink);
}
.f-field input:focus,.f-field textarea:focus,.f-field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(14,124,138,.12);background:#fff}
.f-field textarea{resize:vertical;min-height:110px}
.form-ok{padding:26px;background:var(--accent-soft);border:1px solid rgba(14,124,138,.3);border-radius:var(--r-card);color:var(--accent-strong);font-weight:700;text-align:center;display:none}
.form-ok.show{display:block}

/* 内页地图占位 */
.map-holder{border-radius:var(--r-shell);overflow:hidden;border:1px solid var(--line);position:relative;background:var(--world);color:#fff;min-height:320px;display:grid;place-items:center;margin-top:clamp(30px,4vw,44px)}
.map-holder .map-hint{text-align:center;padding:30px}
.map-holder .map-hint svg{width:40px;height:40px;color:#53C2D0;margin:0 auto 12px}
.map-holder .map-hint p{color:rgba(255,255,255,.65);font-size:var(--fs-sm)}
.map-holder .map-hint b{font-size:1rem;color:#fff}

/* ---------- 下载 ---------- */
.dl-card{display:flex;align-items:center;gap:18px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:22px 24px;transition:transform .25s,box-shadow .25s,border-color .25s;margin-bottom:16px}
.dl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card);border-color:rgba(14,124,138,.3)}
.dl-ico{width:52px;height:52px;border-radius:14px;background:var(--accent-soft);color:var(--accent-strong);display:grid;place-items:center;flex-shrink:0}
.dl-ico svg{width:26px;height:26px}
.dl-body{flex:1;min-width:0}
.dl-body .dl-cat{font-size:var(--fs-xs);color:var(--accent-strong);font-weight:700;letter-spacing:.06em}
.dl-body h3{font-size:1.08rem;font-weight:800;margin-top:3px}
.dl-body p{font-size:var(--fs-sm);color:var(--muted);margin-top:5px;line-height:1.75}
.dl-meta{font-size:var(--fs-xs);color:var(--muted);margin-top:6px;display:flex;gap:12px}

/* ---------- 分页 ---------- */
.pager{display:flex;gap:8px;justify-content:center;margin-top:32px}
.pager a,.pager span{min-width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--line);border-radius:var(--r-control);font-size:var(--fs-sm);font-weight:600;color:var(--muted);background:var(--card)}
.pager a:hover{border-color:var(--accent);color:var(--accent-strong)}
.pager .on{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ---------- 面包屑已含于 page-hero ---------- */

/* ---------- 动效 ---------- */
.rv{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}
.parallax-img{will-change:transform}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .product-grid{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .fields-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .nav{display:none;position:fixed;inset:76px 0 auto 0;background:var(--card);flex-direction:column;align-items:stretch;padding:14px 20px 22px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-float);gap:2px}
  .nav.open{display:flex}
  .nav a{padding:14px 12px;border-radius:var(--r-control);font-size:1rem}
  .nav a::after{display:none}
  .nav a.on{background:var(--accent-soft)}
  .burger{display:flex}
  .header .cta-wrap .cta-phone{display:none}
  .hero .facts{grid-template-columns:repeat(2,1fr)}
  .hero .fact{border-left:0;padding-top:18px}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .tech-grid,.about-grid,.faq-grid,.contact-grid{grid-template-columns:1fr}
  .footer .f-top{grid-template-columns:1fr 1fr}
  .pd-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .cta-band .wrap{flex-direction:column;text-align:center}
}
@media (max-width:600px){
  .product-grid{grid-template-columns:1fr}
  .fields-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .contact-cards{grid-template-columns:1fr}
  .footer .f-top{grid-template-columns:1fr}
  .topbar .tb-right{display:none}
  .hero h1 .hl{white-space:normal}
}

/* ============ 二维码 ============ */
.f-qrcodes{display:flex;gap:14px;margin-top:16px;padding-top:14px;border-top:1px solid rgba(255,255,255,.1)}
.f-qr{text-align:center}
.f-qr img{width:84px;height:84px;object-fit:contain;background:#fff;border-radius:8px;padding:4px;display:block;margin:0 auto}
.f-qr span{display:block;font-size:.72rem;color:rgba(255,255,255,.55);margin-top:6px;letter-spacing:.02em}
.contact-qrcodes{margin-top:22px;padding:18px;background:var(--canvas);border:1px solid var(--line);border-radius:var(--r-card)}
.cq-list{display:flex;gap:20px;flex-wrap:wrap}
.cq-item{text-align:center}
.cq-item img{width:110px;height:110px;object-fit:contain;background:#fff;border:1px solid var(--line);border-radius:10px;padding:6px;display:block;margin:0 auto}
.cq-item span{display:block;font-size:.8rem;color:var(--muted);margin-top:8px;font-weight:500}
@media (max-width:600px){
  .f-qrcodes{justify-content:flex-start}
  .cq-item img{width:90px;height:90px}
}