/* ========================================
   注塑工艺网 zhusu.net.cn - 全站公共样式
   移动端优先 (max-width 420px 容器) 风格参照 ykiw.com
   小而精：窄版居中、简洁卡片、内容一条条
 ======================================== */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-font-smoothing:antialiased}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;background:#f2f5f4;color:#1f2937;line-height:1.6;min-height:100vh}
a{color:#0e7490;text-decoration:none}
a:hover{color:#0c5f77}

/* ===== 顶栏 ===== */
.header{background:#ffffff;border-bottom:3px solid #0e7490}
.header-top{max-width:420px;margin:0 auto;padding:0 14px;display:flex;align-items:center;height:50px;justify-content:space-between}
.logo{font-size:19px;font-weight:800;color:#0e7490;display:flex;align-items:center;gap:6px;letter-spacing:.5px}
.logo span{color:#0e7490}
.logo small{font-size:11px;font-weight:400;color:#67c3d8;display:block;line-height:1}
.nav-right{display:flex;align-items:center;gap:12px;font-size:12px}
.nav-right a{color:#0e7490}
.nav-right a:hover{color:#0c5f77}

/* ===== 图标导航 ===== */
.nav-row{background:#0a2a33;padding:8px 0 10px}
.nav-inner{max-width:420px;margin:0 auto;display:grid;grid-template-columns:repeat(5,1fr);padding:0 14px;gap:8px}
.nav-inner a{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:9px 2px;font-size:11px;font-weight:600;color:#c7eef7;background:#0e4a57;border:1px solid rgba(255,255,255,.07);border-radius:10px;transition:all .18s;text-align:center;gap:4px}
.nav-inner a .nav-icon{font-size:20px;line-height:1}
.nav-inner a:hover{color:#fff;border-color:rgba(56,189,248,.35);background:#115a68;transform:translateY(-1px)}
.nav-inner a.active{color:#fff;border-color:#38bdf8;background:#0e7490;font-weight:700}
@media(min-width:480px){.nav-inner{padding:0 20px}}

/* ===== 主容器 ===== */
.wrap{max-width:420px;margin:0 auto;padding:14px}

/* ===== 卡片 ===== */
.card{background:#fff;border-radius:12px;padding:18px;border:1px solid #e5ece8;margin-bottom:14px;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.card h2{font-size:16px;color:#0e7490;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.card h2::before{content:'';width:4px;height:16px;background:#0e7490;border-radius:2px}

/* ===== 首页 hero 横幅 ===== */
.hero{max-width:420px;margin:0 auto;padding:16px 14px 4px}
.hero-card{background:linear-gradient(135deg,#0e7490,#115a68);border-radius:14px;padding:22px 18px;color:#fff}
.hero-card h1{font-size:22px;color:#fff;margin-bottom:6px;line-height:1.4}
.hero-card p{font-size:13px;color:#a7f3d0;margin-bottom:14px}
.hero-card .hero-btn{display:inline-block;background:#0e9f6e;color:#fff;padding:10px 18px;border-radius:8px;font-size:13px;font-weight:600}

/* ===== 工具入口 2x2 ===== */
.tool-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:14px}
.tool-item{background:#fff;border:1px solid #e5ece8;border-radius:12px;padding:16px 12px;text-align:center;text-decoration:none}
.tool-item:hover{border-color:#0e7490;box-shadow:0 2px 8px rgba(14,116,144,.08)}
.tool-icon{font-size:26px}
.tool-name{font-size:14px;font-weight:700;color:#0e7490;margin-top:6px}
.tool-desc{font-size:11px;color:#6b7280;margin-top:4px;line-height:1.4}

/* ===== 列表卡片 ===== */
.list-card{background:#fff;border-radius:12px;padding:16px;border:1px solid #e5ece8;margin-bottom:12px;display:flex;gap:14px;align-items:flex-start}
.list-card h3{font-size:15px;color:#0e7490;margin-bottom:4px;line-height:1.4}
.list-card p{font-size:12px;color:#6b7280;line-height:1.5;-webkit-line-clamp:2;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}
.list-meta{font-size:11px;color:#9ca3af;margin-top:6px}
.tag{display:inline-block;background:#e6f6fb;color:#0e7490;font-size:11px;padding:2px 8px;border-radius:20px;margin-right:6px}

/* ===== 详情 ===== */
.detail{background:#fff;border-radius:12px;padding:20px;border:1px solid #e5ece8;line-height:1.85;font-size:15px;color:#1f2937}
.detail h2{font-size:19px;margin:24px 0 10px;color:#0e7490;padding-bottom:8px;border-bottom:1px solid #eef5f1}
.detail h3{font-size:16px;margin:18px 0 8px;color:#334155}
.detail p{margin-bottom:14px}
.detail ul,.detail ol{padding-left:20px;margin-bottom:14px}
.detail li{margin-bottom:6px}
.detail img{max-width:100%;border-radius:8px;margin:14px 0}
.box{background:#f0f9fb;border-left:4px solid #0e7490;border-radius:0 8px 8px 0;padding:12px 14px;margin:10px 0;font-size:14px}
.box.red{background:#fef2f2;border-left-color:#dc2626}
.box.green{background:#f0fdf4;border-left-color:#0e9f6e}

/* ===== 工具表单 ===== */
.tool-form label{display:block;font-size:13px;color:#334155;font-weight:600;margin:14px 0 6px}
.tool-form select,.tool-form input[type=text],.tool-form input[type=number]{width:100%;padding:11px 12px;border:1.5px solid #d1d5db;border-radius:8px;font-size:14px;background:#fff;color:#1f2937}
.tool-form select:focus,.tool-form input:focus{outline:none;border-color:#0e7490}
.tool-form small{color:#9ca3af;font-size:12px}
.btn{display:block;width:100%;padding:13px;border-radius:9px;font-size:15px;font-weight:700;cursor:pointer;border:none;text-align:center;margin-top:18px;transition:all .12s}
.btn-primary{background:#0e7490;color:#fff}
.btn-primary:hover{background:#0c5f77}
.result-box{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:12px;padding:18px}
.result-box .big{font-size:26px;font-weight:800;color:#0e9f6e;margin-bottom:8px}
.result-row{display:flex;justify-content:space-between;font-size:13px;padding:7px 0;border-bottom:1px dashed #eef5f1}
.result-row span{color:#6b7280}
.result-row b{color:#0e7490}

/* ===== 页面头 ===== */
.page-header{background:#0e7490;color:#fff;padding:26px 0 18px}
.page-header .wrap h1{font-size:20px;color:#fff;margin-bottom:4px}
.page-header .wrap .breadcrumb{font-size:12px;color:#a7d7e6}
.page-header .wrap .breadcrumb a{color:#c7eef7}

/* ===== 底部 ===== */
.page-footer{background:#0a2a33;color:#94c9b4;padding:26px 0 22px;margin-top:24px;border-top:1px solid #0e4a57}
.page-footer .wrap{text-align:center;font-size:12px}
.page-footer .slogan{color:#a7f3d0;font-size:13px;font-weight:600;margin-bottom:10px}
.page-footer .links{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-bottom:10px}
.page-footer .links a{color:#94d9bd}
.page-footer .links a:hover{color:#fff}
.page-footer .copyright{color:#6ea08c;font-size:11px}
.page-footer .flinks{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:10px;font-size:12px}
.page-footer .flinks .flabel{color:#6ea08c}
.page-footer .flinks a{color:#94d9bd}
.page-footer .flinks a:hover{color:#fff}

/* ===== 通用 ===== */
.text-center{text-align:center}
.mt-4{margin-top:4px}.mt-8{margin-top:8px}.mt-12{margin-top:12px}.mt-16{margin-top:16px}
.btn-inline{display:inline-block;width:auto;padding:10px 18px}
.empty{text-align:center;color:#9ca3af;padding:40px 0;font-size:13px}