/* ═══════════════════════════════════════════════════════════════
   徽林木业 · HUILIN WOOD — 全站设计系统（本地化，无外部依赖）
   配色/字号/圆角/栅格依据：木托盘制造企业材料世界推导
   材料世界：原木、松木板条、托盘、叉车、钢制货架、烘干窑、混凝土车间
   --world   深木棕（老木/焦木色域）
   --accent  信号橙（叉车/防火漆/安全标识色域，饱和 0.78）
   --canvas  暖米白（白坯木材浅暖调）
   ═══════════════════════════════════════════════════════════════ */
:root{
  /* ── 色板（4 槽） ─────────────────────────────────────────── */
  --canvas:#F5F2EC;
  --canvas-2:#EFE9DF;
  --canvas-3:#E9E2D5;
  --ink:#262019;
  --ink-2:#5A524A;
  --ink-3:#857C72;
  --world:#4A3324;
  --world-2:#5D4430;
  --world-3:#75593F;
  --accent:#E05B1F;
  --accent-deep:#C14A14;
  --line:rgba(38,32,25,.14);
  --line-strong:rgba(38,32,25,.28);
  --on-dark:rgba(245,242,236,.92);
  --on-dark-2:rgba(245,242,236,.62);
  --on-dark-3:rgba(245,242,236,.4);

  /* ── 阴影（暖色相三层，配方 ≤3） ───────────────────────────── */
  --shadow-card:
    0 1px 2px rgba(74,51,36,.06),
    0 10px 24px -8px rgba(74,51,36,.12),
    0 32px 64px -32px rgba(74,51,36,.16);
  --shadow-pop:
    0 2px 6px rgba(74,51,36,.08),
    0 20px 44px -12px rgba(74,51,36,.18),
    0 60px 120px -48px rgba(74,51,36,.24);
  --shadow-dark:
    0 24px 60px -24px rgba(0,0,0,.55),
    inset 0 1px 0 rgba(245,242,236,.07);

  /* ── 圆角角色（只有可点的才是圆的） ─────────────────────────── */
  --r-shell:0px;
  --r-card:4px;
  --r-control:6px;
  --r-pill:999px;

  /* ── 栅格 ─────────────────────────────────────────────────── */
  --gut:clamp(20px,4vw,64px);
  --wrap:1280px;
  --ease:cubic-bezier(.22,.61,.36,1);

  /* ── 字阶（断崖：display ÷ body ≈ 5.5） ───────────────────── */
  --display:clamp(52px,7.6vw,116px);
  --h1:clamp(34px,4vw,56px);
  --h2:clamp(26px,2.4vw,40px);
  --h3:clamp(19px,1.3vw,23px);
  --body:16px;
  --small:14px;
  --meta:12px;

  --font-display:"Space Grotesk","Noto Sans SC",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}

/* ── 字体（全部本地 woff2，子集化后 ~60-160KB/字重） ─────────────── */
@font-face{
  font-family:"Noto Sans SC";
  src:url("../fonts/NotoSansSC-Regular.woff2") format("woff2");
  font-weight:400;font-style:normal;font-display:swap;
}
@font-face{
  font-family:"Noto Sans SC";
  src:url("../fonts/NotoSansSC-Bold.woff2") format("woff2");
  font-weight:700;font-style:normal;font-display:swap;
}
@font-face{
  font-family:"Noto Sans SC";
  src:url("../fonts/NotoSansSC-Black.woff2") format("woff2");
  font-weight:900;font-style:normal;font-display:swap;
}
@font-face{
  font-family:"Space Grotesk";
  src:url("../fonts/SpaceGrotesk-Variable.woff2") format("woff2");
  font-weight:300 700;font-style:normal;font-display:swap;
}

/* ── reset & base ─────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--canvas);color:var(--ink);
  font-family:var(--font-body);font-size:var(--body);line-height:1.75;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body.locked{overflow:hidden}
img{display:block;max-width:100%;height:auto}
svg{display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{list-style:none}
::selection{background:var(--accent);color:#fff}
button,a[href]{min-height:24px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ── 排版原语 ─────────────────────────────────────────────────── */
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.14;letter-spacing:-.01em;
  font-weight:900;text-wrap:balance}
.display{font-family:var(--font-display);font-weight:900;
  font-size:var(--display);line-height:1.02;letter-spacing:-.02em}
.h1{font-size:var(--h1)}
.h2{font-size:var(--h2)}
.h3{font-size:var(--h3)}
.lead{font-size:clamp(17px,1.2vw,19px);line-height:1.85;color:var(--ink-2)}
p{max-width:68ch}
.mono{font-family:"Space Grotesk",ui-monospace,monospace;font-variant-numeric:tabular-nums}
.kicker{display:flex;align-items:center;gap:12px;
  font-family:"Space Grotesk",var(--font-body);font-size:var(--meta);
  letter-spacing:.18em;text-transform:uppercase;color:var(--ink-3);font-weight:600}
.kicker::before{content:"";width:26px;height:2px;background:var(--accent);flex:none}
.kicker.on-dark{color:var(--on-dark-3)}
.kicker.on-dark::before{background:var(--accent)}
.rule{height:1px;background:var(--line);width:100%;border:0}

/* ── 布局 ─────────────────────────────────────────────────────── */
.wrap{padding-inline:var(--gut);max-width:calc(var(--wrap) + var(--gut)*2);margin-inline:auto}
.section{padding-block:clamp(72px,9vw,120px)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px 48px;flex-wrap:wrap;margin-bottom:clamp(36px,4vw,56px)}
.sec-head .h2{max-width:20ch}
.sec-head .note{color:var(--ink-2);font-size:var(--small);max-width:42ch}
.section-dark{background:var(--world);color:var(--on-dark)}
.section-dark .lead{color:var(--on-dark-2)}
.section-tint{background:var(--canvas-2)}

/* 编号章节标签（工业档案感） */
.ch-num{font-family:"Space Grotesk",monospace;font-size:13px;font-weight:600;
  letter-spacing:.12em;color:var(--accent)}
.ch-title{display:flex;flex-direction:column;gap:14px}

/* ── 按钮（只有可点的才是圆的） ───────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;
  border-radius:var(--r-pill);padding:15px 30px;font-size:var(--small);
  font-weight:700;letter-spacing:.06em;transition:transform .35s var(--ease),
  background .3s,border-color .3s,color .3s,box-shadow .3s;
  min-height:48px;white-space:nowrap}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-solid{background:var(--accent);color:#fff}
.btn-solid:hover{background:var(--accent-deep);box-shadow:0 14px 30px -12px rgba(224,91,31,.55)}
.btn-ghost{border:1.5px solid var(--line-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);background:var(--ink);color:var(--canvas)}
.btn-ghost-dark{border:1.5px solid rgba(245,242,236,.4);color:var(--on-dark)}
.btn-ghost-dark:hover{background:var(--on-dark);color:var(--world);border-color:var(--on-dark)}
.btn-sm{padding:10px 20px;min-height:38px;font-size:13px}
.btn .arr{transition:transform .3s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}

/* 文本链接（下划线生长） */
.tlink{position:relative;font-weight:700;color:var(--accent-deep)}
.tlink::after{content:"";position:absolute;left:0;bottom:-2px;height:1.5px;width:100%;
  background:var(--accent);transform:scaleX(.28);transform-origin:left;
  transition:transform .4s var(--ease)}
.tlink:hover::after{transform:scaleX(1)}

/* ── 标签 chip ────────────────────────────────────────────────── */
.tag{display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-pill);
  border:1px solid var(--line);padding:4px 12px;font-size:12px;font-weight:600;
  letter-spacing:.06em;color:var(--ink-2);background:rgba(245,242,236,.7)}
.tag.accent{background:var(--accent);border-color:var(--accent);color:#fff}

/* ═══════════════════════════════════════════════════════════════
   Header / 导航
   ═══════════════════════════════════════════════════════════════ */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:90;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:20px var(--gut);transition:padding .4s var(--ease),background .4s var(--ease),
  box-shadow .4s var(--ease);border-bottom:1px solid transparent;
}
.site-header.solid{
  background:rgba(245,242,236,.9);backdrop-filter:blur(14px) saturate(1.3);
  -webkit-backdrop-filter:blur(14px) saturate(1.3);
  padding:10px var(--gut);border-bottom-color:var(--line);
  box-shadow:0 10px 30px -24px rgba(74,51,36,.3);
}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:38px;height:38px;flex:none;transition:transform .4s var(--ease)}
.brand:hover .brand-mark{transform:rotate(-6deg)}
.brand-name{display:flex;flex-direction:column;line-height:1.15}
.brand-name b{font-family:var(--font-display);font-size:19px;font-weight:900;letter-spacing:.06em}
.brand-name span{font-size:11px;letter-spacing:.32em;color:var(--ink-3);font-weight:600;
  text-transform:uppercase}
.site-nav{display:flex;align-items:center;gap:clamp(16px,2vw,30px)}
.site-nav a{font-size:14px;font-weight:600;letter-spacing:.04em;position:relative;padding-block:6px}
.site-nav a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width .35s var(--ease)}
.site-nav a:hover::after,.site-nav a.active::after{width:100%}
.site-nav a.active{color:var(--accent-deep)}
.nav-cta{display:inline-flex}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-control)}
.nav-toggle svg{width:22px;height:22px}
.nav-toggle .x{display:none}
.nav-toggle.open .m{display:none}
.nav-toggle.open .x{display:block}

/* ═══════════════════════════════════════════════════════════════
   首页 Hero
   ═══════════════════════════════════════════════════════════════ */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-end;
  overflow:hidden;background:#17120C}
.hero-media{position:absolute;inset:-8% 0 -8% 0}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:55% 40%;
  transform:scale(1.05);animation:heroIn 2.6s var(--ease) both}
@keyframes heroIn{from{transform:scale(1.2);opacity:.15}to{transform:scale(1.05);opacity:1}}
.hero::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(90deg,rgba(10,8,6,.72) 0%,rgba(10,8,6,.38) 42%,rgba(10,8,6,.05) 78%),
    linear-gradient(180deg,rgba(10,8,6,.4) 0%,rgba(10,8,6,0) 30%,rgba(10,8,6,.28) 62%,rgba(10,8,6,.9) 100%)}
.hero-inner{position:relative;z-index:2;width:100%;padding:0 var(--gut) clamp(64px,8vh,110px);
  color:#fff;display:flex;flex-direction:column;gap:28px}
.hero-eyebrow{display:flex;align-items:center;gap:14px;font-size:13px;letter-spacing:.22em;
  font-weight:600;color:rgba(245,242,236,.75);text-transform:uppercase}
.hero-eyebrow::before{content:"";width:34px;height:2px;background:var(--accent)}
.hero-title{font-size:var(--display);line-height:1.02;letter-spacing:-.02em;max-width:13ch;
  font-weight:900}
.hero-title em{font-style:normal;color:var(--accent)}
.hero-sub{max-width:46ch;font-size:clamp(15px,1.15vw,17px);line-height:1.9;
  color:rgba(245,242,236,.82)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:8px}
.hero-meta{display:flex;gap:clamp(24px,4vw,56px);flex-wrap:wrap;margin-top:14px;
  border-top:1px solid rgba(245,242,236,.18);padding-top:22px;max-width:880px}
.hero-meta div{display:flex;flex-direction:column;gap:2px}
.hero-meta b{font-family:var(--font-display);font-size:26px;font-weight:700;letter-spacing:.01em}
.hero-meta span{font-size:12px;letter-spacing:.1em;color:rgba(245,242,236,.55)}
.scrollhint{position:absolute;right:var(--gut);bottom:44px;z-index:3;
  color:rgba(245,242,236,.55);display:flex;flex-direction:column;align-items:center;gap:10px;
  font-size:11px;letter-spacing:.3em;writing-mode:vertical-rl}
.scrollhint::after{content:"";width:1px;height:52px;background:rgba(245,242,236,.45);
  animation:drop 2s var(--ease) infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}
  55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* 内页顶部条幅（非首页） */
.page-hero{position:relative;padding:clamp(140px,16vh,180px) 0 clamp(56px,7vh,84px);
  background:var(--world);color:var(--on-dark);overflow:hidden}
.page-hero .bg{position:absolute;inset:0;opacity:.16}
.page-hero .bg img{width:100%;height:100%;object-fit:cover}
.page-hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(23,18,12,.5),rgba(23,18,12,.1) 55%,rgba(23,18,12,.55))}
.page-hero .wrap{position:relative;z-index:2;display:flex;flex-direction:column;gap:16px}
.page-hero .crumbs{display:flex;gap:10px;align-items:center;font-size:13px;
  color:var(--on-dark-3);letter-spacing:.08em}
.page-hero .crumbs a{display:inline-block;padding-block:5px}
.page-hero .crumbs a:hover{color:var(--on-dark)}
.page-hero .crumbs b{color:var(--on-dark-2);font-weight:600}
.page-hero h1{font-size:clamp(38px,5vw,68px);line-height:1.06;max-width:16ch}
.page-hero p{color:var(--on-dark-2);max-width:52ch;font-size:clamp(15px,1.1vw,17px)}

/* ═══════════════════════════════════════════════════════════════
   数字统计带
   ═══════════════════════════════════════════════════════════════ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border-top:1px solid var(--line)}
.stats > div{background:var(--canvas);padding:clamp(28px,3.4vw,44px) clamp(20px,2.4vw,36px);
  display:flex;flex-direction:column;gap:8px}
.stats b{font-family:var(--font-display);font-size:clamp(40px,4.6vw,64px);font-weight:700;
  letter-spacing:-.02em;line-height:1;color:var(--world)}
.stats b i{font-style:normal;color:var(--accent);font-size:.55em;margin-left:2px}
.stats span{font-size:var(--small);color:var(--ink-2);font-weight:600;letter-spacing:.04em}
.stats-dark{background:var(--world-2);border-color:rgba(245,242,236,.12)}
.stats-dark > div{background:transparent}
.stats-dark b{color:var(--on-dark)}
.stats-dark span{color:var(--on-dark-2)}

/* ═══════════════════════════════════════════════════════════════
   产品网格（缝隙 4px → 接触印相）
   ═══════════════════════════════════════════════════════════════ */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:4px}
.prod-card{position:relative;overflow:hidden;background:var(--canvas-2);
  display:flex;flex-direction:column;min-height:420px;border-radius:var(--r-card)}
.prod-card .ph{position:relative;overflow:hidden;aspect-ratio:4/3;background:#E4DCCC}
.prod-card .ph img{width:100%;height:100%;object-fit:cover;
  transition:transform .9s var(--ease),filter .5s}
.prod-card:hover .ph img{transform:scale(1.06)}
.prod-card .ph::after{content:"";position:absolute;inset:0;background:
  linear-gradient(180deg,rgba(23,18,12,0) 55%,rgba(23,18,12,.32))}
.prod-card .pcat{position:absolute;left:14px;top:14px;z-index:2}
.prod-card .plink{position:absolute;right:14px;bottom:14px;z-index:2;width:42px;height:42px;
  border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;
  justify-content:center;opacity:0;transform:translateY(8px);
  transition:opacity .4s var(--ease),transform .4s var(--ease)}
.prod-card:hover .plink{opacity:1;transform:none}
.prod-card .pb{display:flex;flex-direction:column;gap:10px;padding:20px 20px 24px;flex:1}
.prod-card .pb h3{font-size:19px;font-weight:900}
.prod-card .pb p{font-size:13.5px;color:var(--ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.prod-card .spec{display:flex;gap:14px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-family:"Space Grotesk",var(--font-body);font-size:12.5px;color:var(--ink-3);
  font-weight:600;letter-spacing:.02em}
.prod-card .spec span{display:flex;align-items:center;gap:6px}
.prod-card .spec svg{width:14px;height:14px;color:var(--accent)}

/* 产品筛选（真的过滤） */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:clamp(28px,3vw,40px)}
.filter-btn{border:1.5px solid var(--line);border-radius:var(--r-pill);
  padding:9px 20px;font-size:13.5px;font-weight:600;color:var(--ink-2);
  transition:all .3s var(--ease)}
.filter-btn:hover{border-color:var(--ink);color:var(--ink)}
.filter-btn.on{background:var(--ink);color:var(--canvas);border-color:var(--ink)}
.prod-card.hide{display:none}

/* 产品详情浮层 */
.modal{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;
  padding:24px}
.modal.open{display:flex}
.modal-backdrop{position:absolute;inset:0;background:rgba(23,18,12,.62);
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.modal-panel{position:relative;background:var(--canvas);border-radius:var(--r-card);
  max-width:980px;width:100%;max-height:88vh;overflow:auto;
  box-shadow:var(--shadow-pop);display:grid;grid-template-columns:1.05fr 1fr}
.modal-panel .mp-img{min-height:100%}
.modal-panel .mp-img img{width:100%;height:100%;object-fit:cover;min-height:380px}
.modal-panel .mp-body{padding:clamp(24px,3vw,40px);display:flex;flex-direction:column;gap:16px}
.modal-close{position:absolute;top:14px;right:14px;z-index:3;width:42px;height:42px;
  border-radius:50%;background:rgba(245,242,236,.92);color:var(--ink);
  display:flex;align-items:center;justify-content:center;transition:background .3s}
.modal-close:hover{background:var(--accent);color:#fff}
.spec-table{width:100%;border-collapse:collapse;font-size:14px}
.spec-table th{text-align:left;font-weight:600;color:var(--ink-3);padding:9px 0;
  width:34%;letter-spacing:.04em;font-size:13px}
.spec-table td{padding:9px 0;border-top:1px solid var(--line);font-weight:600}
.spec-table th{border-top:1px solid var(--line)}
.spec-table tr:first-child th,.spec-table tr:first-child td{border-top:0}

/* ═══════════════════════════════════════════════════════════════
   能力 / 实拍双列
   ═══════════════════════════════════════════════════════════════ */
.cap-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:clamp(24px,3vw,48px);align-items:center}
.cap-media{position:relative}
.cap-media .main-img{border-radius:var(--r-card);overflow:hidden}
.cap-media .main-img img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;
  transition:transform 1.2s var(--ease)}
.cap-media:hover .main-img img{transform:scale(1.04)}
.cap-media .cap-tag{position:absolute;left:18px;bottom:18px;background:rgba(245,242,236,.94);
  border-radius:var(--r-control);padding:10px 16px;font-size:13px;font-weight:700;
  box-shadow:var(--shadow-card);display:flex;align-items:center;gap:8px}
.cap-media .cap-tag i{width:8px;height:8px;border-radius:50%;background:var(--accent)}
.cap-list{display:flex;flex-direction:column}
.cap-item{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.cap-item:last-child{border-bottom:0}
.cap-item .n{font-family:"Space Grotesk",monospace;font-size:14px;font-weight:700;
  color:var(--accent);letter-spacing:.1em;padding-top:4px;flex:none}
.cap-item h4{font-size:17px;font-weight:900;margin-bottom:4px}
.cap-item p{font-size:13.5px;color:var(--ink-2);max-width:48ch}

/* 能力图片 2×2 */
.cap-quad{display:grid;grid-template-columns:repeat(2,1fr);gap:4px}
.cap-quad figure{position:relative;overflow:hidden;border-radius:var(--r-card)}
.cap-quad img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .9s var(--ease)}
.cap-quad figure:hover img{transform:scale(1.05)}
.cap-quad figcaption{position:absolute;left:0;right:0;bottom:0;padding:30px 18px 16px;
  color:#fff;font-size:14px;font-weight:700;letter-spacing:.05em;
  background:linear-gradient(180deg,rgba(23,18,12,0),rgba(23,18,12,.75))}
.cap-quad figcaption small{display:block;font-weight:500;color:rgba(245,242,236,.7);
  font-size:12px;letter-spacing:.02em;margin-top:2px}

/* ═══════════════════════════════════════════════════════════════
   质量 / 认证
   ═══════════════════════════════════════════════════════════════ */
.qc-wrap{display:grid;grid-template-columns:1fr 1.2fr;gap:clamp(32px,5vw,72px);align-items:start}
.qc-badges{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);
  border:1px solid var(--line)}
.qc-badge{background:var(--canvas);padding:26px 22px;display:flex;flex-direction:column;gap:10px}
.qc-badge .ico{width:44px;height:44px;color:var(--world)}
.qc-badge b{font-size:16px;font-weight:900;color:var(--ink)}
.qc-badge span{font-size:12.5px;color:var(--ink-2);line-height:1.65}
.qc-list{display:flex;flex-direction:column;gap:0}
.qc-row{display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:16px 0;border-bottom:1px solid rgba(245,242,236,.14)}
.qc-row:last-child{border-bottom:0}
.qc-row b{font-weight:700;font-size:15px;color:var(--on-dark)}
.qc-row span{font-family:"Space Grotesk",var(--font-body);font-size:13px;color:var(--on-dark-3);
  letter-spacing:.06em}
.qc-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 0 rgba(224,91,31,.55);animation:ping 2.4s infinite}
@keyframes ping{70%{box-shadow:0 0 0 9px rgba(224,91,31,0)}100%{box-shadow:0 0 0 0 rgba(224,91,31,0)}}

/* ═══════════════════════════════════════════════════════════════
   新闻卡片 / 列表
   ═══════════════════════════════════════════════════════════════ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2vw,28px)}
.news-card{display:flex;flex-direction:column;gap:14px;border-radius:var(--r-card);
  background:var(--canvas-2);overflow:hidden;transition:transform .5s var(--ease),
  box-shadow .5s var(--ease)}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-card)}
.news-card .nh{aspect-ratio:16/10;overflow:hidden}
.news-card .nh img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease)}
.news-card:hover .nh img{transform:scale(1.05)}
.news-card .nb{padding:0 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-card h3{font-size:17px;line-height:1.5;transition:color .3s}
.news-card:hover h3{color:var(--accent-deep)}
.news-card p{font-size:13.5px;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .nm{margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--ink-3)}
.news-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.news-row{display:grid;grid-template-columns:150px 1fr auto;gap:clamp(16px,3vw,44px);
  align-items:center;padding:26px 6px;border-bottom:1px solid var(--line);
  transition:background .3s,padding-left .4s var(--ease)}
.news-row:hover{background:var(--canvas-2);padding-left:18px}
.news-row time{font-family:"Space Grotesk",monospace;font-size:13px;color:var(--ink-3);
  letter-spacing:.06em}
.news-row .nt{display:flex;flex-direction:column;gap:6px}
.news-row h3{font-size:18px;line-height:1.5;transition:color .3s}
.news-row:hover h3{color:var(--accent-deep)}
.news-row p{font-size:13.5px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:1;
  -webkit-box-orient:vertical;overflow:hidden}
.news-row .go{width:44px;height:44px;border-radius:50%;border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;color:var(--ink);
  transition:all .35s var(--ease)}
.news-row:hover .go{background:var(--accent);border-color:var(--accent);color:#fff}

/* 文章正文页 */
.article{max-width:820px;margin-inline:auto}
.article h2{font-size:clamp(22px,2.4vw,30px);margin:44px 0 16px}
.article p{margin-bottom:20px;color:var(--ink-2)}
.article .al{font-size:14px;color:var(--ink-3);display:flex;gap:18px;align-items:center;
  padding-bottom:24px;border-bottom:1px solid var(--line);margin-bottom:36px}

/* ═══════════════════════════════════════════════════════════════
   时间线（发展历程）
   ═══════════════════════════════════════════════════════════════ */
.timeline{position:relative;max-width:860px;margin-inline:auto}
.timeline::before{content:"";position:absolute;left:110px;top:8px;bottom:8px;width:1px;
  background:var(--line-strong)}
.tl-item{position:relative;display:grid;grid-template-columns:110px 40px 1fr;gap:0 26px;
  padding-bottom:40px}
.tl-item:last-child{padding-bottom:0}
.tl-item .yr{font-family:"Space Grotesk",monospace;font-size:17px;font-weight:700;
  color:var(--accent);text-align:right;padding-top:2px}
.tl-item .dot{width:14px;height:14px;border-radius:50%;background:var(--canvas);
  border:3px solid var(--world);position:relative;top:6px;justify-self:center}
.tl-item .tx h4{font-size:17px;font-weight:900;margin-bottom:6px}
.tl-item .tx p{font-size:14px;color:var(--ink-2);max-width:56ch}

/* ═══════════════════════════════════════════════════════════════
   联系页
   ═══════════════════════════════════════════════════════════════ */
.contact-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:clamp(24px,3vw,56px)}
.contact-cards{display:grid;grid-template-columns:1fr 1fr;gap:4px}
.contact-card{background:var(--canvas-2);border-radius:var(--r-card);padding:26px 24px;
  display:flex;flex-direction:column;gap:10px}
.contact-card .ico{width:42px;height:42px;color:var(--world)}
.contact-card b{font-size:15px;font-weight:900}
.contact-card p,.contact-card a{font-size:14px;color:var(--ink-2);line-height:1.8}
.contact-card a:hover{color:var(--accent-deep)}
.map-card{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);
  background:var(--canvas-2)}
.map-card svg{width:100%;height:auto;display:block}
.map-card .map-foot{padding:14px 20px;font-size:13px;color:var(--ink-2);display:flex;
  align-items:center;gap:10px;justify-content:space-between;flex-wrap:wrap}

/* ═══════════════════════════════════════════════════════════════
   CTA 段（满版影像）
   ═══════════════════════════════════════════════════════════════ */
.cta-band{position:relative;overflow:hidden;color:#fff;background:#1E1710}
.cta-band .bg{position:absolute;inset:-10% 0 -10% 0}
.cta-band .bg img{width:100%;height:100%;object-fit:cover;transform:scale(1.02);
  transition:transform 1.4s var(--ease)}
.cta-band:hover .bg img{transform:scale(1.05)}
.cta-band::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(23,18,12,.86) 0%,rgba(23,18,12,.55) 55%,rgba(23,18,12,.3))}
.cta-band .wrap{position:relative;z-index:2;padding-block:clamp(90px,12vw,150px);
  display:flex;flex-direction:column;gap:26px;align-items:flex-start}
.cta-band h2{font-size:clamp(32px,4.6vw,62px);line-height:1.12;max-width:16ch}
.cta-band p{color:rgba(245,242,236,.8);max-width:44ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ═══════════════════════════════════════════════════════════════
   Footer
   ═══════════════════════════════════════════════════════════════ */
.site-footer{background:var(--world);color:var(--on-dark);padding:clamp(56px,7vw,88px) 0 0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:clamp(28px,4vw,56px);
  padding-bottom:clamp(44px,5vw,64px)}
.foot-brand{display:flex;flex-direction:column;gap:16px}
.foot-brand .brand{color:#fff}
.foot-brand .brand-name b{color:var(--on-dark)}
.foot-brand .brand-name span{color:var(--on-dark-3)}
.foot-brand p{font-size:13.5px;color:var(--on-dark-2);max-width:34ch;line-height:1.9}
.foot-col h5{font-size:13px;letter-spacing:.22em;text-transform:uppercase;color:var(--on-dark-3);
  margin-bottom:18px;font-weight:700}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a{font-size:14px;color:var(--on-dark-2);transition:color .3s,padding-left .3s var(--ease);
  display:inline-block;padding-block:5px}
.foot-col a:hover{color:var(--on-dark);padding-left:6px}
.foot-contact li{display:flex;gap:10px;font-size:13.5px;color:var(--on-dark-2);line-height:1.8}
.foot-contact svg{width:16px;height:16px;color:var(--accent);flex:none;margin-top:4px}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;
  border-top:1px solid rgba(245,242,236,.14);padding:22px 0;flex-wrap:wrap;
  font-size:12.5px;color:var(--on-dark-3)}

/* ═══════════════════════════════════════════════════════════════
   滚动揭示 / 回顶 / 工具
   ═══════════════════════════════════════════════════════════════ */
.js .rv{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),
  transform .9s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}
.to-top{position:fixed;right:24px;bottom:24px;z-index:80;width:46px;height:46px;
  border-radius:50%;background:var(--ink);color:var(--canvas);display:flex;align-items:center;
  justify-content:center;opacity:0;pointer-events:none;transform:translateY(10px);
  transition:all .4s var(--ease);box-shadow:var(--shadow-pop)}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--accent)}
.to-top svg{width:18px;height:18px}
.skip-link{position:absolute;left:-999px;top:0;z-index:200;background:var(--accent);color:#fff;
  padding:10px 18px;border-radius:0 0 8px 0}
.skip-link:focus{left:0}

/* ═══════════════════════════════════════════════════════════════
   响应式
   ═══════════════════════════════════════════════════════════════ */
@media(max-width:1080px){
  .prod-grid{grid-template-columns:repeat(3,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .qc-wrap{grid-template-columns:1fr;gap:40px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .cap-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .modal-panel{grid-template-columns:1fr}
  .modal-panel .mp-img img{max-height:320px}
}
@media(max-width:760px){
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .site-nav{position:fixed;inset:0;background:rgba(245,242,236,.98);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
    flex-direction:column;justify-content:center;gap:30px;z-index:-1;
    opacity:0;pointer-events:none;transition:opacity .4s var(--ease)}
  .site-nav.open{opacity:1;pointer-events:auto}
  .site-nav a{font-size:22px;font-weight:800}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
  .cap-quad{grid-template-columns:1fr}
  .timeline::before{left:12px}
  .tl-item{grid-template-columns:64px 20px 1fr;gap:0 14px}
  .tl-item .yr{text-align:left;font-size:15px}
  .hero-meta{flex-direction:column;gap:16px}
  .contact-cards{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .news-row{grid-template-columns:1fr;gap:10px}
  .news-row .go{display:none}
  .scrollhint{display:none}
  .stats{grid-template-columns:1fr 1fr}
}
@media(max-width:520px){
  .prod-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .sec-head{flex-direction:column;align-items:flex-start}
}

/* 动效降级 */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important;
    scroll-behavior:auto!important}
  .rv{opacity:1;transform:none}
  .hero-media img{animation:none;transform:none}
}