/* ============ 基础与变量 ============ */
:root{
  --wood-deep:#4E342E;      /* 深胡桃棕 */
  --wood-ink:#2E241E;       /* 墨色正文 */
  --wood-amber:#B07A4E;     /* 琥珀木强调 */
  --wood-amber-deep:#96603A;
  --cream:#F7F1E6;          /* 米白背景 */
  --sand:#EFE3D1;           /* 浅橡木卡片 */
  --line:#E2D2BA;
  --dark:#33271E;           /* 深色区 */
  --dark-soft:#4A3829;
  --muted:#7A675A;
  --white:#FFFDF8;
  --serif:'Noto Serif SC','Songti SC','SimSun',serif;
  --sans:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei','Segoe UI',sans-serif;
  --shadow:0 10px 30px rgba(78,52,46,.10);
  --radius:18px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--wood-ink);background:var(--cream);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
section{padding:64px 20px}
.wrap{max-width:1120px;margin:0 auto}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;line-height:1.3}
.eyebrow{font-size:14px;letter-spacing:.14em;color:var(--wood-amber-deep);font-weight:600;margin-bottom:10px}
.section-title{font-size:26px;color:var(--wood-deep)}
.section-sub{color:var(--muted);margin-top:10px;max-width:640px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:999px;padding:14px 26px;font-size:16px;border:none;cursor:pointer;transition:transform .15s ease,box-shadow .2s ease;min-height:48px}
.btn:active{transform:scale(.98)}
.btn-amber{background:var(--wood-amber);color:#fff}
.btn-amber:hover{background:var(--wood-amber-deep);box-shadow:0 8px 22px rgba(176,122,78,.35)}
.btn-ghost{background:transparent;color:var(--wood-deep);border:1.5px solid var(--wood-deep)}
.btn-ghost:hover{background:rgba(78,52,46,.06)}
.btn-light{background:var(--white);color:var(--wood-deep)}
.btn-light:hover{box-shadow:var(--shadow)}
.icon{width:22px;height:22px;flex:none}

/* ============ 顶部导航 ============ */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,253,248,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1120px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:12px 20px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:700;color:var(--wood-deep);font-size:19px}
.brand-mark{width:40px;height:40px;border-radius:10px;object-fit:cover;flex:none;background:transparent}
.brand small{display:block;font-family:var(--sans);font-size:11px;color:var(--muted);font-weight:400;letter-spacing:.06em}
.nav-links{display:none}
.nav-links a{padding:8px 12px;font-size:15px;color:var(--wood-ink);font-weight:500}
.nav-links a:hover{color:var(--wood-amber-deep)}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-tel{font-size:16px;font-weight:700;color:var(--wood-deep);white-space:nowrap}
.nav-tel .icon{color:var(--wood-amber)}
.nav-cta .btn{padding:11px 20px;font-size:15px}
.burger{display:flex;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.burger span{width:24px;height:2.5px;background:var(--wood-deep);border-radius:2px}
.mobile-menu{position:fixed;top:64px;left:0;right:0;background:var(--white);border-bottom:1px solid var(--line);display:none;flex-direction:column;padding:10px 20px 20px;z-index:99;box-shadow:var(--shadow)}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:14px 4px;font-size:17px;color:var(--wood-ink);border-bottom:1px solid var(--line)}
.mobile-menu a:last-child{border-bottom:none}

/* ============ Hero ============ */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;padding:110px 20px 80px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url('/sjz/assets/hero-keting.png');background-size:cover;background-position:center;filter:saturate(.92) contrast(1.02)}
.hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(105deg,rgba(51,39,30,.92) 0%,rgba(51,39,30,.72) 46%,rgba(51,39,30,.28) 100%)}
.hero-inner{position:relative;z-index:2;max-width:1120px;margin:0 auto;width:100%}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(176,122,78,.22);border:1px solid rgba(247,241,230,.35);color:var(--cream);padding:8px 16px;border-radius:999px;font-size:14px;margin-bottom:20px}
.hero h1{font-size:clamp(30px,6vw,52px);color:var(--cream);line-height:1.25}
.hero h1 em{font-style:normal;color:#E7C59A}
.hero p.lead{color:rgba(247,241,230,.92);margin-top:18px;font-size:clamp(16px,2.4vw,19px);max-width:600px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:22px;color:rgba(247,241,230,.9);font-size:15px}
.hero-points span{display:inline-flex;align-items:center;gap:7px}
.hero-points .icon{color:#E7C59A}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{margin-top:34px;display:flex;flex-wrap:wrap;gap:10px 26px;color:rgba(247,241,230,.8);font-size:14px;border-top:1px solid rgba(247,241,230,.25);padding-top:20px}
.hero-meta b{color:var(--cream);font-weight:600}
.hero-scroll{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);color:rgba(247,241,230,.7);font-size:13px;letter-spacing:.08em;display:flex;flex-direction:column;align-items:center;gap:6px;z-index:2}
.hero-scroll::after{content:'';width:1px;height:34px;background:rgba(247,241,230,.5)}

/* ============ 通用区块 ============ */
.sec-white{background:var(--white)}
.sec-cream{background:var(--cream)}
.grid{display:grid;gap:18px;margin-top:34px}
.g4{grid-template-columns:1fr}
.g3{grid-template-columns:1fr}
.g6{grid-template-columns:1fr}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.card .k-icon{width:46px;height:46px;border-radius:12px;background:var(--sand);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.card .k-icon .icon{color:var(--wood-amber-deep)}
.card h3{font-size:18px;color:var(--wood-deep);margin-bottom:8px}
.card p{font-size:14.5px;color:var(--muted)}
.num{font-family:var(--serif);color:var(--wood-amber);font-size:15px;font-weight:700}

/* ============ 项目卡片 ============ */
.proj-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.proj-card .thumb{height:190px;overflow:hidden;background:var(--sand)}
.proj-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.proj-card:hover .thumb img{transform:scale(1.05)}
.proj-body{padding:18px 20px 22px}
.proj-body h3{font-size:17px;color:var(--wood-deep)}
.proj-body p{font-size:13.5px;color:var(--muted);margin-top:6px}
.tag{display:inline-block;font-size:12px;color:var(--wood-amber-deep);background:var(--sand);border-radius:6px;padding:3px 9px;margin-top:12px;font-weight:600}

/* ============ 材质区 ============ */
.material-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.material-card .thumb{height:170px;overflow:hidden;background:var(--sand)}
.material-card .thumb img{width:100%;height:100%;object-fit:cover}
.material-body{padding:18px 20px 22px}
.material-body h3{font-size:17px;color:var(--wood-deep);display:flex;align-items:baseline;gap:8px}
.material-body h3 .en{font-family:var(--sans);font-size:12px;color:var(--muted);font-weight:500}
.material-body p{font-size:13.5px;color:var(--muted);margin-top:8px}
.tech{background:var(--dark);color:var(--cream);border-radius:var(--radius);padding:28px;margin-top:30px;position:relative;overflow:hidden}
.tech::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 90% 0%,rgba(176,122,78,.28),transparent 55%)}
.tech-inner{position:relative;z-index:1}
.tech h3{font-family:var(--serif);font-size:20px;color:#E7C59A}
.tech p{color:rgba(247,241,230,.9);margin-top:10px;font-size:15px;max-width:720px}
.tech-list{display:grid;gap:10px;margin-top:18px}
.tech-list li{list-style:none;display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(247,241,230,.92)}
.tech-list .icon{width:18px;height:18px;color:#E7C59A;margin-top:3px}

/* ============ 案例 ============ */
.case-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.case-card .thumb{height:230px;overflow:hidden;background:var(--sand)}
.case-card .thumb img{width:100%;height:100%;object-fit:cover}
.case-body{padding:20px}
.case-body .loc{font-size:13px;color:var(--wood-amber-deep);font-weight:600}
.case-body h3{font-size:17px;color:var(--wood-deep);margin:6px 0}
.case-body p{font-size:14px;color:var(--muted)}

/* ============ 工厂实力 ============ */
.factory{background:var(--dark);color:var(--cream);position:relative;overflow:hidden}
.factory::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 12% 20%,rgba(176,122,78,.24),transparent 50%)}
.factory .wrap{position:relative;z-index:1}
.factory .section-title{color:var(--cream)}
.factory .section-sub{color:rgba(247,241,230,.75)}
.factory-grid{display:grid;gap:16px;margin-top:32px;grid-template-columns:1fr}
.factory-item{border:1px solid rgba(247,241,230,.18);border-radius:var(--radius);padding:22px;background:rgba(255,255,255,.04)}
.factory-item .f-icon{width:40px;height:40px;border-radius:10px;background:rgba(176,122,78,.25);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.factory-item .f-icon .icon{color:#E7C59A}
.factory-item h3{font-size:16px;color:var(--cream)}
.factory-item p{font-size:13.5px;color:rgba(247,241,230,.78);margin-top:6px}
.factory-highlight{margin-top:30px;background:rgba(176,122,78,.16);border:1px solid rgba(231,197,154,.4);border-radius:var(--radius);padding:24px;text-align:center}
.factory-highlight h3{font-family:var(--serif);font-size:clamp(19px,3vw,25px);color:#E7C59A}

/* ============ 流程 ============ */
.steps{display:grid;gap:0;margin-top:36px;grid-template-columns:1fr}
.step{display:flex;gap:18px;padding:20px 0;border-bottom:1px dashed var(--line);position:relative}
.step:last-child{border-bottom:none}
.step .s-num{font-family:var(--serif);font-size:26px;color:var(--wood-amber);font-weight:700;min-width:54px;text-align:center;line-height:1}
.step-body h3{font-size:17px;color:var(--wood-deep)}
.step-body p{font-size:14px;color:var(--muted);margin-top:4px}

/* ============ 口碑 ============ */
.review-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.review-card .stars{color:var(--wood-amber);font-size:15px;letter-spacing:2px}
.review-card p{font-size:14px;color:var(--wood-ink);margin-top:12px}
.review-card .who{margin-top:14px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:12px}
.review-card .who b{color:var(--wood-deep)}

/* ============ 联系/预约 ============ */
.contact .wrap{display:grid;gap:30px;grid-template-columns:1fr}
.contact-info .ci{display:flex;gap:14px;align-items:flex-start;margin-top:20px}
.contact-info .ci .c-icon{width:44px;height:44px;border-radius:12px;background:var(--sand);display:flex;align-items:center;justify-content:center;flex:none}
.contact-info .ci .c-icon .icon{color:var(--wood-amber-deep)}
.contact-info .ci h4{font-size:15px;color:var(--wood-deep)}
.contact-info .ci p{font-size:14px;color:var(--muted)}
.contact-info .ci a{color:var(--wood-deep);font-weight:600}
.form-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.form-card h3{font-size:19px;color:var(--wood-deep)}
.form-row{display:grid;gap:14px;margin-top:20px;grid-template-columns:1fr}
.field label{display:block;font-size:13.5px;color:var(--wood-deep);font-weight:600;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:10px;font-size:16px;background:var(--white);color:var(--wood-ink);font-family:var(--sans)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--wood-amber);box-shadow:0 0 0 3px rgba(176,122,78,.15)}
.form-note{font-size:12.5px;color:var(--muted);margin-top:12px}
.form-ok{display:none;margin-top:18px;background:var(--sand);border:1px solid var(--wood-amber);border-radius:12px;padding:16px;color:var(--wood-deep);font-size:14.5px}
.form-ok.show{display:block}

/* ============ 行业资讯（织梦调用） ============ */
.news-grid{display:grid;gap:18px;margin-top:34px;grid-template-columns:1fr}
.news-col{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:8px 18px;box-shadow:var(--shadow)}
.news-item{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:13px 2px;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--wood-ink)}
.news-item:hover{color:var(--wood-amber-deep)}
.news-title{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.news-date{color:var(--muted);font-size:13px;flex:none}
.news-col .news-item:first-child{padding-top:6px}
.news-col .news-item:last-child{border-bottom:none}
.news-more{text-align:center;margin-top:28px}
@media (min-width:768px){.news-grid{grid-template-columns:1fr 1fr}}

/* ============ 页脚 ============ */
.footer{background:var(--dark);color:rgba(247,241,230,.85);padding:48px 20px 40px}
.footer-grid{max-width:1120px;margin:0 auto;display:grid;gap:26px;grid-template-columns:1fr}
.footer h4{font-family:var(--serif);color:var(--cream);font-size:16px;margin-bottom:14px}
.footer p,.footer li{font-size:14px;line-height:2;color:rgba(247,241,230,.78)}
.footer a:hover{color:#E7C59A}
.footer .f-brand{font-family:var(--serif);font-size:20px;color:var(--cream);font-weight:700}
.footer .f-brand small{display:block;font-family:var(--sans);font-size:12px;color:rgba(247,241,230,.6);font-weight:400;letter-spacing:.08em;margin-top:4px}
.footer .f-icons{display:flex;gap:14px;margin-top:16px}
.footer .f-icons a{width:40px;height:40px;border-radius:10px;border:1px solid rgba(247,241,230,.25);display:flex;align-items:center;justify-content:center;color:rgba(247,241,230,.8)}
.footer .f-icons a:hover{border-color:#E7C59A;color:#E7C59A}
.footer-bottom{border-top:1px solid rgba(247,241,230,.15);margin:34px auto 0;padding-top:20px;text-align:center;font-size:12.5px;color:rgba(247,241,230,.6);max-width:1120px}
.footer-bottom .beian{display:block;margin-top:6px}

/* ============ 滚动动态效果 ============ */
.rv{opacity:0;transform:translateY(26px);transition:opacity .65s ease,transform .65s ease}
.rv.in{opacity:1;transform:none}
.hero-inner{animation:fadeUp .9s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}.hero-inner{animation:none}}

/* ============ 悬浮行动 ============ */
.float-bar{position:fixed;left:0;right:0;bottom:0;z-index:90;display:grid;grid-template-columns:1fr 1fr;background:var(--white);border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(78,52,46,.12)}
.float-bar a{display:flex;flex-direction:column;align-items:center;gap:3px;padding:10px 6px;font-size:12px;color:var(--wood-ink);font-weight:600}
.float-bar a .icon{color:var(--wood-amber)}
.float-bar a.primary{background:var(--wood-amber);color:#fff}
.float-bar a.primary .icon{color:#fff}
.raise{position:fixed;right:16px;bottom:74px;z-index:90}
.raise a{display:flex;align-items:center;gap:8px;background:var(--wood-amber);color:#fff;font-weight:600;font-size:14.5px;border-radius:999px;padding:12px 18px;box-shadow:0 10px 26px rgba(176,122,78,.4)}

/* ============ 响应式：平板及以上 ============ */
@media (min-width:768px){
  section{padding:84px 32px}
  .section-title{font-size:32px}
  .nav-links{display:flex;gap:4px}
  .burger{display:none}
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(3,1fr)}
  .g6{grid-template-columns:repeat(3,1fr)}
  .tech-list{grid-template-columns:1fr 1fr}
  .factory-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:12px 30px}
  .step{border-bottom:1px dashed var(--line)}
  .contact .wrap{grid-template-columns:1fr 1.1fr;align-items:start}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr}
  .float-bar{display:none}
  .raise{bottom:26px}
}
@media (min-width:1024px){
  .g4{grid-template-columns:repeat(4,1fr)}
  .g6{grid-template-columns:repeat(3,1fr)}
  .factory-grid{grid-template-columns:repeat(4,1fr)}
  .hero h1{max-width:760px}
}
@media (max-width:767px){
  .raise{display:none}
  body{padding-bottom:60px}
  .float-bar a .icon{width:22px;height:22px}
  .hero-meta{display:none}
  /* 移动端导航精简 */
  .nav-inner{padding:10px 14px}
  .brand{font-size:16px;gap:8px}
  .brand-mark{width:36px;height:36px;border-radius:8px;object-fit:cover;background:transparent}
  .brand small{display:none}
  .nav-tel{display:none}
  .nav-cta .btn{display:none}
  .mobile-menu{top:56px}
  /* 移动端卡片两列，压缩 */
  .g4,.g3,.g6{grid-template-columns:1fr 1fr;gap:12px}
  .steps{grid-template-columns:1fr 1fr;gap:6px 12px}
  .factory-grid{grid-template-columns:1fr 1fr;gap:12px}
  .news-grid{grid-template-columns:1fr 1fr;gap:12px}
  .card{padding:15px}
  .card .k-icon{width:40px;height:40px;margin-bottom:12px}
  .card h3{font-size:16px}
  .proj-card .thumb{height:130px}
  .proj-body{padding:12px 13px 15px}
  .proj-body h3{font-size:15px}
  .proj-body p{font-size:12.5px}
  .tag{font-size:11px}
  .material-card .thumb{height:110px}
  .material-body{padding:12px 13px 15px}
  .material-body h3{font-size:14px}
  .material-body h3 .en{display:none}
  .material-body p{font-size:12px}
  .case-card .thumb{height:140px}
  .case-body{padding:13px}
  .case-body h3{font-size:15px}
  .case-body p{font-size:12.5px}
  .review-card{padding:15px}
  .review-card p{font-size:13px}
  .step{padding:13px 0;gap:10px}
  .step .s-num{font-size:21px;min-width:30px}
  .step-body h3{font-size:15px}
  .step-body p{font-size:12.5px}
  .news-col{padding:6px 11px}
  .news-item{font-size:13px;flex-direction:column;gap:2px;align-items:flex-start}
  .news-title{white-space:normal;line-height:1.5}
  .news-date{font-size:11.5px}
  .tech-list{grid-template-columns:1fr}
}