/* ==========================================================================
   中世新材料 ZETHWORLD NEW MATERIALS · zhsh.ltd
   主色：墨绿 #0A2418 / 金 #C9A45C / 米 #F5F1E8
   结构：基础（移动优先）→ 桌面 @media(min-width:961px) → 移动补丁 @media(max-width:960px)
   ========================================================================== */

:root{
  --g:#0A2418; --g2:#123626; --g3:#1B4A33;
  --gold:#C9A45C; --gold-d:#A9863F;
  --ivory:#F5F1E8; --ivory2:#EFEADE;
  --ink:#1A2B22; --mut:#5E6E64; --line:#E4DFD2;
  --serif:'Songti SC','Noto Serif SC','Source Han Serif SC',STSong,SimSun,serif;
  --sans:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--ivory);line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
::selection{background:var(--g);color:var(--ivory)}

h1,h2,h3,h4,.serif{font-family:var(--serif);font-weight:600}
p,dd,li,blockquote{text-align:justify;text-justify:inter-ideograph;word-break:break-word}

/* ---------- 布局 ---------- */
.wrap{max-width:1200px;margin:0 auto;padding:0 22px}

/* ---------- 顶部导航 ---------- */
.nav{position:sticky;top:0;z-index:100;background:rgba(10,36,24,.97);backdrop-filter:saturate(150%) blur(8px);border-bottom:1px solid rgba(201,164,92,.22)}
.nav-in{display:flex;align-items:center;justify-content:space-between;gap:14px;height:66px;max-width:1320px;margin:0 auto;padding:0 18px}
.nav .brand{display:flex;align-items:center;flex-shrink:0}
.nav .brand img{height:31px;width:auto}
.nav .menu{display:none}
.nav .lang{font-size:12px;letter-spacing:2px;color:rgba(245,241,232,.55);border:1px solid rgba(245,241,232,.22);padding:4px 10px;border-radius:2px}
.nav .btn-menu{display:flex;align-items:center;gap:6px;color:var(--ivory);font-size:13px;letter-spacing:1px;background:none;border:0;font-family:var(--sans);cursor:pointer}
.nav .btn-menu i{display:block;width:16px;height:9px;border-top:1.5px solid currentColor;border-bottom:1.5px solid currentColor;font-style:normal}
.nav.on-hero{position:absolute;background:linear-gradient(180deg,rgba(7,26,17,.72),rgba(7,26,17,0))}

/* 移动抽屉 */
.drawer{position:fixed;inset:0;z-index:200;background:rgba(7,22,15,.98);display:none;flex-direction:column;padding:0}
.drawer.open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:66px;padding:0 18px;border-bottom:1px solid rgba(201,164,92,.2)}
.drawer-top img{height:29px}
.drawer-top button{background:none;border:0;color:var(--ivory);font-size:26px;line-height:1;cursor:pointer;font-family:var(--sans)}
.drawer nav{padding:14px 22px 40px;overflow-y:auto}
.drawer nav a{display:block;color:rgba(245,241,232,.82);font-size:16px;letter-spacing:1px;padding:14px 0;border-bottom:1px solid rgba(245,241,232,.08);font-family:var(--serif)}
.drawer nav a.on{color:var(--gold)}
.drawer nav a small{display:block;font-size:10.5px;letter-spacing:2px;color:rgba(245,241,232,.35);font-family:var(--sans);margin-top:3px}

/* ---------- 按钮 ---------- */
.btn{display:inline-block;padding:12px 28px;font-size:14px;letter-spacing:2px;border-radius:2px;transition:.2s;border:1px solid transparent}
.btn.gold{background:var(--gold);color:#12251B}
.btn.gold:hover{background:#D4B171}
.btn.ghost{border-color:rgba(245,241,232,.45);color:#fff}
.btn.ghost:hover{border-color:var(--gold);color:var(--gold)}
.btn.line{border-color:rgba(10,36,24,.25);color:var(--g)}
.btn.line:hover{border-color:var(--gold);color:var(--gold-d)}

/* ---------- 首页 hero ---------- */
.hero{position:relative;min-height:0;padding:0;background:#071A11;overflow:hidden}
.hero .bg{position:absolute;inset:0;background:url('hero-bamboo.jpg') center/cover no-repeat;transform:scale(1.02)}
.hero::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,22,14,.86) 0%,rgba(7,26,17,.66) 42%,rgba(7,26,17,.9) 100%)}
.hero .wrap{position:relative;z-index:2;padding-top:90px;padding-bottom:46px}
.hero .k{color:var(--gold);font-size:11px;letter-spacing:2.4px;margin-bottom:16px}
.hero h1{color:#fff;font-size:29px;line-height:1.35;letter-spacing:1px}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero .sub{color:rgba(245,241,232,.8);font-size:14px;line-height:1.95;margin-top:16px}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero .cta .btn{font-size:13px;padding:11px 22px}

/* 数据条 */
.stats{position:relative;z-index:2;background:rgba(6,20,13,.86);border-top:1px solid rgba(201,164,92,.32)}
.stats .wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:18px 12px;padding-top:22px;padding-bottom:22px}
.stat b{display:block;font-family:var(--serif);font-size:26px;color:var(--gold);line-height:1.1;font-weight:600}
.stat b small{font-size:13px;font-family:var(--sans);margin-left:2px}
.stat span{display:block;font-size:11.5px;color:rgba(245,241,232,.6);letter-spacing:1px;margin-top:5px}

/* ---------- 内页页头 ---------- */
.phead{position:relative;background:var(--g);color:#fff;padding:38px 0 34px;overflow:hidden}
.phead::after{content:'';position:absolute;right:-40px;top:-60px;width:260px;height:260px;border:1px solid rgba(201,164,92,.15);border-radius:50%}
.phead .cap{color:var(--gold);font-size:10.5px;letter-spacing:3px;margin-bottom:10px}
.phead h1{font-size:27px;letter-spacing:2px}
.phead p{color:rgba(245,241,232,.62);font-size:13px;margin-top:10px;line-height:1.9}
.phead .crumb{font-size:11px;color:rgba(245,241,232,.4);letter-spacing:1px;margin-bottom:14px}
.phead .crumb a:hover{color:var(--gold)}

/* ---------- 通用区块 ---------- */
.sec{padding:50px 0 42px}
.sec.white{background:#fff}
.sec.dark{background:var(--g);color:#fff}
.sec.dark .lead,.sec.dark p{color:rgba(245,241,232,.66)}
.sec.ivory2{background:var(--ivory2)}
.cap{color:var(--gold);letter-spacing:3.5px;font-size:10.5px;margin-bottom:10px}
.sec h2{font-size:25px;line-height:1.35;color:var(--g);letter-spacing:1px}
.sec.dark h2{color:#fff}
.sec h2 i{font-family:var(--sans);font-style:normal;color:var(--gold);font-size:14px;margin-left:10px;letter-spacing:1px;font-weight:400}
.lead{color:var(--mut);margin-top:14px;font-size:14px;line-height:1.95}
.rule{width:44px;height:2px;background:var(--gold);margin:16px 0 0}

/* ---------- 首页业务卡 ---------- */
.biz-grid{display:grid;grid-template-columns:1fr;gap:14px;margin-top:28px}
.biz-card{border:1px solid var(--line);background:var(--ivory);padding:24px 20px 22px;position:relative;display:flex;flex-direction:column}
.biz-card .no{position:absolute;top:16px;right:18px;font-family:Georgia,serif;font-size:13px;color:var(--gold);letter-spacing:1px}
.biz-card h3{font-size:18px;color:var(--g);padding-right:34px}
.biz-card .co{font-size:11.5px;color:var(--mut);letter-spacing:.3px;margin-top:5px;line-height:1.6;min-height:34px}
.biz-card p{font-size:13px;color:#48584F;line-height:1.9;margin-top:12px;border-top:1px solid var(--line);padding-top:12px;flex:1}
.biz-card .tag{display:inline-block;align-self:flex-start;margin-top:12px;font-size:11px;color:var(--gold-d);letter-spacing:1.5px;border:1px solid rgba(201,164,92,.5);padding:4px 10px;border-radius:999px}

/* ---------- 技术卡 ---------- */
.tech-grid{display:grid;grid-template-columns:1fr;gap:14px;margin-top:28px}
.tech-card{background:rgba(245,241,232,.05);border:1px solid rgba(201,164,92,.28);padding:26px 20px;display:flex;flex-direction:column}
.tech-card .num{font-family:Georgia,serif;font-size:12px;color:var(--gold);letter-spacing:2px}
.tech-card h3{font-size:17.5px;color:#fff;margin:10px 0 10px;line-height:1.5}
.tech-card p{font-size:13px;color:rgba(245,241,232,.66);line-height:1.95;flex:1}
.tech-card .m{display:inline-block;align-self:flex-start;margin-top:14px;font-size:11px;letter-spacing:1px;color:var(--gold);border-bottom:1px solid rgba(201,164,92,.4);padding-bottom:2px}

/* ---------- 基地卡 ---------- */
.base-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:26px}
.base-card{background:#fff;border:1px solid var(--line);padding:20px 14px;text-align:center}
.base-card h3{font-size:16px;color:var(--g);letter-spacing:.5px}
.base-card .pr{display:inline-block;font-size:10px;color:var(--gold-d);letter-spacing:2px;margin-top:8px;border:1px solid rgba(201,164,92,.45);padding:3px 10px;border-radius:999px}
.base-card p{font-size:11.5px;color:var(--mut);margin-top:12px;line-height:1.8}

/* ---------- IR 时间线 ---------- */
.ir-flex{display:grid;grid-template-columns:1fr;gap:30px}
.tl{border-left:1px solid rgba(201,164,92,.45);padding-left:22px}
.tl-item{position:relative;padding-bottom:24px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:'';position:absolute;left:-27px;top:7px;width:8px;height:8px;border-radius:50%;background:var(--gold)}
.tl-item b{color:var(--gold);font-family:Georgia,serif;font-size:12px;letter-spacing:1px;font-weight:400}
.tl-item h4{font-size:15px;margin:5px 0;color:#fff}
.tl-item p{font-size:12.5px;color:rgba(245,241,232,.6);line-height:1.85}

/* ---------- 新闻列表 ---------- */
.news-list{margin-top:26px;border-top:1px solid var(--line)}
.news-item{display:block;padding:20px 0;border-bottom:1px solid var(--line)}
.news-item .d{font-family:Georgia,serif;font-size:11.5px;color:var(--gold-d);letter-spacing:1px}
.news-item h3{font-size:15.5px;color:var(--g);margin-top:6px;line-height:1.55}
.news-item p{font-size:12.5px;color:var(--mut);margin-top:7px;line-height:1.85}
.news-item:hover h3{color:var(--gold-d)}

/* ---------- 双栏图文 ---------- */
.split{display:grid;grid-template-columns:1fr;gap:22px}
.split .pic{background:var(--g2);aspect-ratio:4/3;background-size:cover;background-position:center}

/* ---------- 表格 ---------- */
.tbl-wrap{overflow-x:auto;margin-top:22px;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;font-size:12.5px;min-width:520px}
th,td{border:1px solid #D9D3C4;padding:11px 10px;text-align:left;vertical-align:middle}
th{background:var(--g);color:var(--ivory);font-weight:400;letter-spacing:1px;font-size:12px;white-space:nowrap}
td{color:#3D4D45;line-height:1.7}
tbody tr:nth-child(even){background:rgba(239,234,222,.45)}
/* 深色板块内表格：文字提亮、斑马行换深色半透明 */
.sec.dark td{color:rgba(245,241,232,.85)}
.sec.dark tbody tr:nth-child(even){background:rgba(245,241,232,.06)}

/* ---------- 声明 ---------- */
.notice{margin-top:24px;border-left:2px solid var(--gold);background:rgba(201,164,92,.08);padding:14px 16px}
.notice b{display:block;font-size:12px;color:var(--gold-d);letter-spacing:1px;margin-bottom:6px}
.notice p{font-size:11.5px;color:var(--mut);line-height:1.85}

/* ---------- 联系 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr;gap:14px;margin-top:26px}
.contact-card{background:#fff;border:1px solid var(--line);padding:22px 20px}
.contact-card h3{font-size:14.5px;color:var(--g);letter-spacing:.5px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.contact-card dl{margin-top:12px;font-size:12.5px;color:#44544B;line-height:1.9}
.contact-card dt{color:var(--mut);font-size:11px;letter-spacing:1px;margin-top:8px}
.contact-card dd{margin:0}

/* ---------- 页脚 ---------- */
.foot{background:#071A11;color:rgba(245,241,232,.55);padding:34px 0 26px;font-size:11.5px;border-top:2px solid var(--gold)}
.foot-top{display:grid;grid-template-columns:1fr;gap:24px}
.foot-brand img{height:32px;margin-bottom:12px}
.foot-brand p{font-size:11.5px;line-height:1.9;color:rgba(245,241,232,.45)}
.foot-col h4{font-size:11.5px;color:var(--gold);letter-spacing:2px;margin-bottom:10px;font-family:var(--sans);font-weight:400}
.foot-col a,.foot-col span{display:block;font-size:11.5px;color:rgba(245,241,232,.55);padding:3px 0;line-height:1.7}
.foot-col a:hover{color:var(--gold)}
.foot-bot{margin-top:26px;padding-top:16px;border-top:1px solid rgba(245,241,232,.1);display:flex;flex-direction:column;gap:8px;font-size:11px;color:rgba(245,241,232,.38);letter-spacing:.5px}
.foot-bot .links{display:flex;flex-wrap:wrap;gap:14px}

/* ==========================================================================
   桌面 ≥961px
   ========================================================================== */
@media (min-width:961px){
  body{line-height:1.8}
  .wrap{padding:0 40px}
  .nav-in{height:80px;padding:0 48px}
  .nav .brand img{height:46px}
  .nav .menu{display:flex;align-items:center;gap:26px}
  .nav .menu a{color:rgba(245,241,232,.88);font-size:14px;letter-spacing:1px;position:relative;padding:6px 0}
  .nav .menu a::after{content:'';position:absolute;left:0;right:100%;bottom:0;height:1px;background:var(--gold);transition:right .25s}
  .nav .menu a:hover::after,.nav .menu a.on::after{right:0}
  .nav .menu a.on{color:var(--gold)}
  .nav .btn-menu{display:none}
  .nav .lang{margin-left:6px;font-size:12px}

  .hero{min-height:780px;display:flex;flex-direction:column;justify-content:center}
  .hero .bg{transform:none}
  .hero::after{background:linear-gradient(90deg,rgba(6,22,14,.9) 0%,rgba(7,26,17,.66) 48%,rgba(7,26,17,.2) 100%)}
  .hero .wrap{padding-top:0;padding-bottom:88px;width:100%}
  .hero .k{font-size:13px;letter-spacing:5px;margin-bottom:20px}
  .hero h1{font-size:52px;line-height:1.28;letter-spacing:2px}
  .hero .sub{font-size:16px;margin-top:20px;max-width:600px}
  .hero .cta{gap:14px;margin-top:32px}
  .hero .cta .btn{font-size:14px;padding:13px 30px}
  .stats{position:absolute;left:0;right:0;bottom:0;background:rgba(6,20,13,.82);backdrop-filter:blur(4px)}
  .stats .wrap{display:flex;justify-content:space-between;gap:20px;padding-top:24px;padding-bottom:24px}
  .stat b{font-size:32px}
  .stat b small{font-size:15px}
  .stat span{font-size:12.5px;letter-spacing:1.5px}

  .phead{padding:52px 0 46px}
  .phead .cap{font-size:11.5px;letter-spacing:4px;margin-bottom:12px}
  .phead h1{font-size:36px;letter-spacing:3px}
  .phead p{font-size:14.5px;margin-top:12px}
  .phead .crumb{font-size:11.5px;margin-bottom:16px}

  .sec{padding:84px 0 70px}
  .sec h2{font-size:36px}
  .sec h2 i{font-size:19px;margin-left:14px}
  .cap{font-size:12px;letter-spacing:5px;margin-bottom:12px}
  .lead{font-size:15.5px;margin-top:16px;line-height:2}
  .rule{margin-top:20px}

  .biz-grid{grid-template-columns:repeat(4,1fr);gap:20px;margin-top:44px}
  .app-grid{grid-template-columns:repeat(3,1fr)}
  .biz-card{padding:30px 22px 26px}
  .biz-card .no{font-size:14px;top:22px;right:22px}
  .biz-card h3{font-size:20px}
  .biz-card .co{font-size:12px;min-height:38px}
  .biz-card p{font-size:13px;margin-top:14px;padding-top:14px}
  .biz-card .tag{font-size:11.5px;margin-top:14px;padding:5px 12px}

  .tech-grid{grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
  .tech-card{padding:36px 28px}
  .tech-card .num{font-size:14px}
  .tech-card h3{font-size:21px;margin:14px 0 12px}
  .tech-card p{font-size:13.5px}
  .tech-card .m{font-size:12px;margin-top:16px}

  .base-grid{grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
  .base-card{padding:30px 18px}
  .base-card h3{font-size:19px}
  .base-card .pr{font-size:10.5px;margin-top:10px;padding:4px 12px}
  .base-card p{font-size:12px;margin-top:14px}

  .ir-flex{grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}
  .tl{padding-left:30px}
  .tl-item{padding-bottom:28px}
  .tl-item::before{left:-35px;width:9px;height:9px}
  .tl-item b{font-size:14px}
  .tl-item h4{font-size:17px;margin:6px 0}
  .tl-item p{font-size:13px}

  .news-list{margin-top:36px}
  .news-item{padding:24px 0}
  .news-item .d{font-size:12px}
  .news-item h3{font-size:18px;margin-top:8px}
  .news-item p{font-size:13.5px;margin-top:8px}

  .split{grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
  .split.rev{grid-template-columns:1fr 1.05fr}

  table{font-size:13.5px;min-width:0}
  th,td{padding:13px 14px}
  th{font-size:12.5px}

  .notice{padding:18px 20px;margin-top:30px}
  .notice b{font-size:13px}
  .notice p{font-size:12px}

  .contact-grid{grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px}
  .contact-card{padding:28px 24px}
  .contact-card h3{font-size:16px}
  .contact-card dl{font-size:13.5px}

  .foot{padding:56px 0 30px;font-size:12.5px}
  .foot-top{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
  .foot-brand img{height:44px;margin-bottom:16px}
  .foot-brand p{font-size:12px}
  .foot-col h4{font-size:12px;letter-spacing:2.5px;margin-bottom:14px}
  .foot-col a,.foot-col span{font-size:12.5px;padding:4px 0}
  .foot-bot{margin-top:36px;padding-top:20px;flex-direction:row;justify-content:space-between;align-items:center;font-size:11.5px}
}

/* ==========================================================================
   移动补丁 ≤960px
   ========================================================================== */
@media (max-width:960px){
  /* 移动端正文与卡片小字统一两端对齐 */
  p,dd,li,blockquote,.hero .sub,.biz-card p,.tech-card p,.base-card p,.news-item p,.lead,.notice p,.contact-card dd{text-align:justify;text-justify:inter-ideograph}
  .hero h1,.phead h1,.sec h2,.biz-card h3,.tech-card h3,.base-card h3,.news-item h3,.contact-card h3,.foot-col h4,.cap,.stat b,.stat span,.biz-card .co,.news-item .d,.tl-item b,.tech-card .num{text-align:left}
  .hero .bg{background-position:62% center}
  .sec.dark h2{font-size:23px}
  .biz-card .co{min-height:0}
  .foot-col span,.foot-col a{font-size:12px}
}