/* ============================================================
   康瑞标准件 — 工业标准件/紧固件企业官网
   设计基调：钢灰专业 · 信息密集 · 产品目录风格
   主色：#6B7B8D(钢灰) #2D2D2D(深灰) #C0392B(红) #2C6FAC(蓝)
   架构：第三方模板模式（{pboot:sitedomain}/skin/）
   ============================================================ */


/* ===== CSS Variables ===== */
:root {
  --primary: #6B7B8D;
  --primary-dark: #4A5A6B;
  --primary-light: #8B9DAF;
  --dark: #2D2D2D;
  --dark-light: #3D3D3D;
  --accent-red: #C0392B;
  --accent-red-hover: #A93226;
  --accent-blue: #2C6FAC;
  --accent-blue-hover: #1E5A8E;
  --bg: #FFFFFF;
  --bg-alt: #F5F6F8;
  --bg-steel: #E8ECF0;
  --bg-dark: #2D2D2D;
  --bg-darker: #1A1A1A;
  --text: #334155;
  --text-light: #64748B;
  --text-dark: #1E293B;
  --text-white: #F1F5F9;
  --border: #DDE1E6;
  --border-dark: #4A5568;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --font: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'WenQuanYi Micro Hei', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
  --header-h: 72px;
  --container: 1200px;
  --duration-fast: 150ms;
  --duration: 300ms;
  --duration-slow: 500ms;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base ===== */
*,*::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:16px;line-height:1.75;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;overflow-x:hidden;letter-spacing:0.01em}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--duration-fast) var(--ease)}
ul,ol{list-style:none}
input,button,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:600;line-height:1.35;color:var(--text-dark);letter-spacing:-0.01em}
h1{font-size:2.5rem;font-weight:800}h2{font-size:2rem;font-weight:700}h3{font-size:1.3rem}h4{font-size:1.1rem}
.container{max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:80px 0}
.section--alt{background:var(--bg-alt)}
.section--dark{background:var(--bg-dark);color:var(--text-white)}
.section--steel{background:var(--bg-steel)}
.section--tight{padding:50px 0}

/* ===== Section Header ===== */
.section-header{text-align:center;margin-bottom:48px}
.section-tag{display:inline-block;font-size:0.8rem;font-weight:600;letter-spacing:0.15em;text-transform:uppercase;color:var(--primary);margin-bottom:12px;padding:4px 14px;border:1px solid var(--primary);border-radius:2px}
.section-title{font-family:var(--font-heading);font-size:2rem;font-weight:700;color:var(--text-dark);margin-bottom:10px;letter-spacing:-0.01em}
.section--dark .section-title{color:var(--text-white)}
.section-subtitle{font-size:1.05rem;color:var(--text-light);max-width:600px}
.section--dark .section-subtitle{color:#94A3B8}
.section-header--left{text-align:left}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;font-size:0.93rem;font-weight:600;border-radius:var(--radius-sm);transition:all var(--duration) var(--ease);white-space:nowrap;cursor:pointer;border:2px solid transparent}
.btn--primary{background:var(--accent-red);color:#fff}
.btn--primary:hover{background:var(--accent-red-hover);transform:translateY(-1px);box-shadow:0 4px 12px rgba(192,57,43,0.3)}
.btn--outline{border-color:var(--primary);color:var(--primary);background:transparent}
.btn--outline:hover{background:var(--primary);color:#fff}
.btn--white-outline{border-color:rgba(255,255,255,0.5);color:#fff;background:transparent}
.btn--white-outline:hover{background:#fff;color:var(--dark)}
.btn--ghost{color:var(--primary);padding:8px 16px}
.btn--ghost:hover{color:var(--primary-dark);background:rgba(107,123,141,0.08)}
.btn--dark{background:var(--dark);color:#fff}
.btn--dark:hover{background:var(--dark-light)}
.btn--sm{padding:8px 18px;font-size:0.85rem}
.btn--lg{padding:16px 36px;font-size:1.05rem}

/* ===== Header ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--header-h);background:#fff;border-bottom:1px solid var(--border);transition:box-shadow var(--duration) var(--ease)}
.header.scrolled{box-shadow:var(--shadow-md)}
.header__inner{max-width:var(--container);margin:0 auto;padding:0 20px;display:flex;align-items:center;height:100%;gap:24px}
.header__logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.header__logo-icon{width:42px;height:42px;border-radius:var(--radius-sm);background:var(--primary);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem}
.header__logo-text{display:flex;flex-direction:column}
.header__logo-name{font-size:1.15rem;font-weight:700;color:var(--text-dark);line-height:1.2}
.header__logo-sub{font-size:0.65rem;color:var(--text-light);letter-spacing:0.1em;text-transform:uppercase}

/* Nav */
.header__nav{display:flex;align-items:center;gap:4px;flex:1;justify-content:flex-end}
.header__nav-link{display:flex;align-items:center;gap:4px;padding:8px 16px;font-size:0.9rem;font-weight:500;color:var(--text);border-radius:var(--radius-sm);transition:all var(--duration-fast) var(--ease);white-space:nowrap;position:relative}
.header__nav-link:hover{color:var(--primary);background:rgba(107,123,141,0.06)}
.header__nav-link.active{color:var(--primary);font-weight:600}
.header__nav-item{position:relative}

/* Dropdown - ★ 13.3 z-index */
.header__dropdown{position:absolute;top:100%;left:0;min-width:180px;padding:8px 0;background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(8px);transition:all var(--duration) var(--ease);z-index:110}
.header__nav-item:hover .header__dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.header__dropdown a{display:block;padding:10px 20px;font-size:0.88rem;color:var(--text);transition:all var(--duration-fast) var(--ease)}
.header__dropdown a:hover{color:var(--primary);background:var(--bg-alt)}

/* Header Actions */
.header__actions{display:flex;align-items:center;gap:10px}
.header__cta{padding:9px 20px;background:var(--accent-red);color:#fff;font-size:0.88rem;font-weight:600;border-radius:var(--radius-sm);white-space:nowrap;transition:all var(--duration) var(--ease)}
.header__cta:hover{background:var(--accent-red-hover);box-shadow:0 4px 12px rgba(192,57,43,0.3)}

/* Hamburger - ★ 13.4 独立于 header__actions */
.hamburger{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer;z-index:120}
.hamburger span{display:block;width:24px;height:2px;background:var(--text-dark);border-radius:2px;transition:all var(--duration) var(--ease)}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Mobile Nav */
.mobile-nav{position:fixed;top:0;right:-320px;width:300px;height:100vh;background:#fff;z-index:115;transition:right var(--duration) var(--ease);box-shadow:var(--shadow-lg);overflow-y:auto;padding:24px}
.mobile-nav.active{right:0}
.mobile-nav__overlay{position:fixed;inset:0;background:rgba(0,0,0,0.4);z-index:114;opacity:0;visibility:hidden;transition:all var(--duration) var(--ease)}
.mobile-nav__overlay.active{opacity:1;visibility:visible}
.mobile-nav__link{display:block;padding:14px 16px;font-size:1rem;color:var(--text);border-radius:var(--radius-sm);transition:background var(--duration-fast)}
.mobile-nav__link:hover{background:var(--bg-alt);color:var(--primary)}
.mobile-nav__sub{padding:0 0 0 20px;max-height:0;overflow:hidden;transition:max-height var(--duration) var(--ease)}
.mobile-nav__sub.active{max-height:400px}
.mobile-nav__sub a{display:block;padding:10px 16px;font-size:0.9rem;color:var(--text-light);border-radius:var(--radius-sm)}
.mobile-nav__sub a:hover{color:var(--primary)}

/* ===== Hero / Banner ===== */
.hero{position:relative;height:560px;overflow:hidden;margin-top:var(--header-h)}
.hero .swiper,.hero .swiper-wrapper,.hero .swiper-slide{height:100%}
.hero__slide{height:100%;background-size:cover;background-position:center}
.hero__overlay{position:absolute;inset:0;background:linear-gradient(135deg, rgba(45,45,45,0.7) 0%, rgba(45,45,45,0.3) 50%, rgba(107,123,141,0.4) 100%);z-index:1}
.hero__content{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;justify-content:center;max-width:var(--container);margin:0 auto;padding:0 20px;width:100%}
.hero__title{font-size:3rem;font-weight:800;color:#fff;max-width:600px;line-height:1.2;margin-bottom:16px}
.hero__subtitle{font-size:1.15rem;color:rgba(255,255,255,0.85);max-width:500px;margin-bottom:32px}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap}
.hero .swiper-pagination{bottom:24px!important;z-index:3}
.hero .swiper-pagination-bullet{width:10px;height:10px;background:rgba(255,255,255,0.5);opacity:1}
.hero .swiper-pagination-bullet-active{background:#fff}

/* ===== Inner Banner ===== */
.inner-banner{position:relative;height:260px;overflow:hidden;margin-top:var(--header-h);background:var(--primary-dark)}
.inner-banner img{width:100%;height:100%;object-fit:cover;opacity:0.4}
.inner-banner__content{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:2}
.inner-banner__title{font-size:2rem;font-weight:700;color:#fff;margin-bottom:6px}
.inner-banner__subtitle{font-size:0.95rem;color:rgba(255,255,255,0.7)}

/* ===== Breadcrumb ===== */
.breadcrumb{padding:14px 0;background:var(--bg-alt);border-bottom:1px solid var(--border);font-size:0.85rem;color:var(--text-light)}
.breadcrumb a{color:var(--text-light)}.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{color:var(--primary)}

/* ===== Cards ===== */
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:all var(--duration) var(--ease);cursor:pointer;display:block}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:var(--primary-light)}
.card__image{position:relative;overflow:hidden;aspect-ratio:4/3;background:var(--bg-steel)}
.card__image img{width:100%;height:100%;object-fit:cover;transition:transform var(--duration-slow) var(--ease)}
.card:hover .card__image img{transform:scale(1.05)}
.card__body{padding:18px}
.card__tag{display:inline-block;font-size:0.72rem;font-weight:600;padding:3px 10px;border-radius:2px;margin-bottom:10px;letter-spacing:0.05em}
.card__tag--blue{background:rgba(44,111,172,0.1);color:var(--accent-blue)}
.card__tag--red{background:rgba(192,57,43,0.1);color:var(--accent-red)}
.card__tag--steel{background:rgba(107,123,141,0.12);color:var(--primary-dark)}
.card__title{font-size:1.05rem;font-weight:600;color:var(--text-dark);margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card__desc{font-size:0.88rem;color:var(--text-light);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card__meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:0.8rem;color:var(--text-light);margin-top:10px}
.card__meta i{color:var(--primary)}

/* Product Card */
.card--product .card__specs{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:10px;font-size:0.8rem;color:var(--text-light)}
.card--product .card__specs span{display:flex;align-items:center;gap:4px}
.card--product .card__specs strong{color:var(--text-dark);font-weight:600}

/* Case Card */
.card--case .card__image{aspect-ratio:16/10}
.card--case .card__image::after{content:'';position:absolute;inset:0;background:linear-gradient(transparent 55%, rgba(0,0,0,0.5));z-index:1}
.card--case .card__overlay-info{position:absolute;bottom:0;left:0;right:0;padding:16px 18px;z-index:2;color:#fff}
.card--case .card__overlay-info .card__tag{margin-bottom:4px}

/* News Card */
.card--news{display:flex;flex-direction:row;align-items:stretch}
.card--news .card__image{width:240px;flex-shrink:0;aspect-ratio:auto;min-height:160px}
.card--news .card__body{flex:1;display:flex;flex-direction:column;justify-content:center}
.card--news .card__date{font-size:0.8rem;color:var(--text-light);margin-top:8px}

/* ===== Grid Layouts ===== */
.list-grid{display:grid;gap:24px}
.list-grid--2{grid-template-columns:repeat(2,1fr)}
.list-grid--3{grid-template-columns:repeat(3,1fr)}
.list-grid--4{grid-template-columns:repeat(4,1fr)}
.list-grid--5{grid-template-columns:repeat(5,1fr)}

/* ===== Stats Section ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);padding:40px 20px;transition:all var(--duration) var(--ease)}
.stat-item:hover{box-shadow:var(--shadow-md);border-color:var(--primary)}
.stat-item__number{font-size:3rem;font-weight:800;color:var(--accent-red);line-height:1;margin-bottom:10px;font-family:var(--font-mono)}
.stat-item__number span{display:inline}
.stat-item__label{font-size:0.9rem;color:var(--text-light);font-weight:500}
.section--dark .stat-item{background:var(--dark-light);border-color:var(--border-dark)}
.section--dark .stat-item__label{color:#94A3B8}

/* ===== Features ===== */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{text-align:center;padding:36px 24px;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff;transition:all var(--duration) var(--ease)}
.feature-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.feature-card__icon{width:64px;height:64px;margin:0 auto 20px;background:var(--bg-steel);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.6rem;color:var(--primary)}
.feature-card__title{font-size:1.1rem;font-weight:600;margin-bottom:8px}
.feature-card__desc{font-size:0.88rem;color:var(--text-light);line-height:1.7}

/* ===== CTA Section ===== */
.cta-section{padding:80px 0;background:var(--bg-steel);text-align:center;border-top:3px solid var(--accent-red)}
.cta-section__title{font-size:2rem;font-weight:700;margin-bottom:10px;color:var(--text-dark)}
.cta-section .btn{margin-top:20px}

/* ===== Page Layout (inner pages) ===== */
.page-layout{display:flex;gap:30px;padding:40px 0}
.page-sidebar{width:260px;flex-shrink:0}
.page-main{flex:1;min-width:0}

/* ===== Sidebar ===== */
.sidebar{border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;position:sticky;top:calc(var(--header-h) + 20px)}
.sidebar__title{padding:18px 20px;background:var(--primary-dark);color:#fff;font-size:1.05rem;font-weight:600}
.sidebar__nav a{display:block;padding:13px 20px;font-size:0.9rem;color:var(--text);border-bottom:1px solid var(--border);transition:all var(--duration-fast) var(--ease)}
.sidebar__nav a:hover{color:var(--primary);background:var(--bg-alt);padding-left:28px}
.sidebar__nav a.active{color:var(--accent-red);font-weight:600;border-left:3px solid var(--accent-red);background:rgba(192,57,43,0.03)}
.sidebar__nav a:last-child{border-bottom:none}

/* ===== Specs Table ===== */
.specs-table{width:100%;border-collapse:collapse;font-size:0.9rem}
.specs-table thead{background:var(--primary-dark);color:#fff}
.specs-table th{padding:14px 16px;text-align:left;font-weight:600;font-size:0.85rem;letter-spacing:0.05em}
.specs-table td{padding:12px 16px;border-bottom:1px solid var(--border)}
.specs-table tbody tr:hover{background:var(--bg-alt)}
.specs-table tbody tr:nth-child(even){background:rgba(107,123,141,0.03)}

/* ===== Pagination ===== */
.pagination{display:flex;align-items:center;justify-content:center;gap:6px;margin-top:40px;flex-wrap:wrap}
.pagination a,.pagination span{display:inline-flex;align-items:center;justify-content:center;min-width:38px;height:38px;padding:0 10px;font-size:0.88rem;border:1px solid var(--border);border-radius:var(--radius-sm);transition:all var(--duration-fast) var(--ease);color:var(--text)}
.pagination a:hover{border-color:var(--primary);color:var(--primary);background:rgba(107,123,141,0.04)}
.pagination .active{background:var(--primary);color:#fff;border-color:var(--primary);font-weight:600}
.pagination .disabled{color:#ccc;pointer-events:none}

/* ===== No Data ===== */
.no-data{text-align:center;padding:60px 20px;color:var(--text-light);font-size:1rem}

/* ===== Product Detail ===== */
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:40px 0}
.product-detail__gallery{border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;position:sticky;top:calc(var(--header-h) + 20px)}
.product-detail__gallery img{width:100%}
.product-detail__info h1{font-size:1.8rem;margin-bottom:16px}
.product-detail__params{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;margin-bottom:24px}
.product-detail__param{padding:14px 16px;background:#fff}
.product-detail__param-label{font-size:0.78rem;color:var(--text-light);margin-bottom:2px;text-transform:uppercase;letter-spacing:0.05em}
.product-detail__param-value{font-size:1.05rem;font-weight:600;color:var(--text-dark)}
.product-detail__tabs{margin-top:40px;border-top:1px solid var(--border)}
.product-detail__tab-nav{display:flex;gap:0;border-bottom:2px solid var(--border)}
.product-detail__tab-nav button{padding:14px 24px;font-size:0.9rem;font-weight:600;color:var(--text-light);border-bottom:2px solid transparent;margin-bottom:-2px;transition:all var(--duration-fast) var(--ease)}
.product-detail__tab-nav button.active{color:var(--primary);border-bottom-color:var(--primary)}
.product-detail__tab-content{padding:24px 0;font-size:0.95rem;line-height:1.8}
.product-detail__tab-content img{max-width:100%}

/* ===== Content (about/single pages) ===== */
.content-body{font-size:0.95rem;line-height:1.9;color:var(--text)}
.content-body h2{font-size:1.5rem;margin:32px 0 16px}
.content-body h3{font-size:1.2rem;margin:24px 0 12px}
.content-body p{margin-bottom:16px}
.content-body img{max-width:100%;margin:20px 0;border-radius:var(--radius-sm)}
.content-body table{width:100%;border-collapse:collapse;margin:16px 0}
.content-body td,.content-body th{border:1px solid var(--border);padding:10px 14px;font-size:0.9rem}

/* ===== Case Detail ===== */
.case-detail__hero{aspect-ratio:21/9;border-radius:var(--radius-sm);overflow:hidden;margin-bottom:30px}
.case-detail__hero img{width:100%;height:100%;object-fit:cover}
.case-detail__meta{display:flex;gap:24px;flex-wrap:wrap;padding:16px 20px;background:var(--bg-alt);border-radius:var(--radius-sm);margin-bottom:24px;font-size:0.88rem}
.case-detail__meta span{display:flex;align-items:center;gap:6px}
.case-detail__meta i{color:var(--primary)}

/* ===== News Detail ===== */
.news-detail__header{padding-bottom:20px;border-bottom:1px solid var(--border);margin-bottom:24px}
.news-detail__header h1{font-size:1.6rem}
.news-detail__meta{display:flex;gap:20px;flex-wrap:wrap;font-size:0.85rem;color:var(--text-light);margin-top:12px}
.news-detail__prev-next{display:flex;justify-content:space-between;gap:20px;margin-top:40px;padding-top:20px;border-top:1px solid var(--border);flex-wrap:wrap}
.news-detail__prev-next a{color:var(--text-light);font-size:0.9rem;max-width:48%}
.news-detail__prev-next a:hover{color:var(--primary)}

/* ===== Dealer / Form ===== */
.dealer-intro{padding:40px;background:var(--bg-alt);border-radius:var(--radius-sm);border-left:4px solid var(--primary);margin-bottom:30px;font-size:0.95rem;line-height:1.8}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:0.88rem;font-weight:600;color:var(--text-dark);margin-bottom:6px}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:0.93rem;transition:border-color var(--duration-fast) var(--ease);background:#fff}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(107,123,141,0.1)}
.form-group textarea{min-height:130px;resize:vertical}
.form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.form-actions{display:flex;gap:14px;align-items:center;margin-top:24px}

/* ===== Contact ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info h2{font-size:1.5rem;margin-bottom:20px}
.contact-info__item{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--border)}
.contact-info__item i{width:36px;height:36px;background:var(--bg-steel);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--primary);flex-shrink:0;font-size:0.95rem}
.contact-info__item strong{display:block;font-size:0.9rem;color:var(--text-dark);margin-bottom:2px}
.contact-info__item p{font-size:0.88rem;color:var(--text-light)}
.contact-map{border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border);min-height:300px;background:var(--bg-alt)}

/* ===== Quality Section ===== */
.quality-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.quality-card{text-align:center;padding:30px 20px;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff;transition:all var(--duration) var(--ease)}
.quality-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md)}
.quality-card__num{font-size:2.5rem;font-weight:800;color:var(--primary);line-height:1;margin-bottom:8px}
.quality-card__title{font-size:1rem;font-weight:600;margin-bottom:6px}
.quality-card__desc{font-size:0.83rem;color:var(--text-light)}

/* ===== Inquiry / Message ===== */
.inquiry-form{padding:30px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-alt)}
.inquiry-form .form-group textarea{min-height:100px}
.inquiry-form__captcha{display:flex;align-items:center;gap:12px}
.inquiry-form__captcha img{border-radius:var(--radius-sm);cursor:pointer;height:42px}

/* ===== Search ===== */
.search-form{max-width:500px;margin-bottom:30px}
.search-form input{width:100%;padding:14px 20px;border:2px solid var(--border);border-radius:var(--radius-sm);font-size:1rem;transition:border-color var(--duration-fast)}
.search-form input:focus{outline:none;border-color:var(--primary)}
.search-highlight{color:var(--accent-red);font-weight:600}

/* ===== Footer ===== */
.footer{background:var(--bg-darker);color:var(--text-white);font-size:0.88rem}
.footer__grid{max-width:var(--container);margin:0 auto;padding:60px 20px 30px;display:grid;grid-template-columns:2fr 1fr 1.5fr 1.2fr;gap:40px}
.footer__brand-desc{color:#94A3B8;line-height:1.7;margin-bottom:16px;font-size:0.85rem}
.footer__col-title{font-size:0.95rem;font-weight:600;color:#fff;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--primary)}
.footer__links a{display:block;padding:6px 0;color:#94A3B8;font-size:0.85rem;transition:color var(--duration-fast) var(--ease)}
.footer__links a:hover{color:#fff;padding-left:6px}
.footer__contact-item{display:flex;gap:10px;align-items:flex-start;padding:6px 0;color:#94A3B8;font-size:0.85rem}
.footer__contact-item i{color:var(--primary);margin-top:3px;flex-shrink:0}
.footer__qrcode{width:110px;height:110px;background:rgba(255,255,255,0.08);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:0.72rem;color:#94A3B8;text-align:center;line-height:1.5}
.footer__social{display:flex;gap:10px;margin-top:16px}
.footer__social a{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,0.08);display:flex;align-items:center;justify-content:center;color:#94A3B8;font-size:0.9rem;transition:all var(--duration-fast) var(--ease)}
.footer__social a:hover{background:var(--primary);color:#fff}
.footer__bottom{border-top:1px solid rgba(255,255,255,0.08);margin-top:0}
.footer__bottom-inner{max-width:var(--container);margin:0 auto;padding:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;color:#94A3B8;font-size:0.82rem}
.footer__bottom-inner a{color:#94A3B8}.footer__bottom-inner a:hover{color:#fff}

/* Friend Links */
.friend-links{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:16px 0}
.friend-links__label{font-size:0.82rem;font-weight:600;color:#fff;white-space:nowrap}
.friend-links a{font-size:0.82rem;color:#94A3B8;padding:4px 12px;border:1px solid rgba(255,255,255,0.1);border-radius:2px;transition:all var(--duration-fast) var(--ease)}
.friend-links a:hover{color:#fff;border-color:var(--primary);background:rgba(107,123,141,0.15)}

/* Back to Top */
.back-top{position:fixed;bottom:30px;right:24px;width:44px;height:44px;background:var(--primary);color:#fff;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.1rem;box-shadow:var(--shadow-md);z-index:90;opacity:0;visibility:hidden;transform:translateY(20px);transition:all var(--duration) var(--ease);cursor:pointer}
.back-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--primary-dark)}

/* Online Service */
.online-service{position:fixed;bottom:90px;right:24px;z-index:90}
.online-service a{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--radius-sm);background:var(--accent-red);color:#fff;font-size:1.2rem;box-shadow:var(--shadow-md);margin-bottom:8px;transition:all var(--duration) var(--ease)}
.online-service a:hover{background:var(--accent-red-hover);transform:scale(1.05)}

/* ===== Subscribe ===== */
.subscribe-card{padding:50px 40px;background:var(--bg-steel);border-radius:var(--radius-sm);text-align:center;border:1px solid var(--border)}
.subscribe-form{display:flex;gap:12px;max-width:500px;margin:20px auto 0}
.subscribe-form input{flex:1;padding:14px 18px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:0.93rem}
.subscribe-form input:focus{outline:none;border-color:var(--primary)}

/* ===== AOS Overrides ===== */
[data-aos]{transition-timing-function:var(--ease)}
[data-aos].aos-animate{pointer-events:auto}

/* ===== Lazy Loading ===== */
img[data-src]{opacity:0;transition:opacity var(--duration) var(--ease)}
img[data-src].loaded{opacity:1}

/* ===== Utility ===== */
.text-center{text-align:center}
.text-muted{color:var(--text-light)}
.mt-sm{margin-top:12px}.mt-md{margin-top:24px}.mt-lg{margin-top:40px}
.mb-sm{margin-bottom:12px}.mb-md{margin-bottom:24px}.mb-lg{margin-bottom:40px}
.hidden{display:none!important}


/* 手机端底部固定操作栏 — 默认隐藏，仅在 ≤768px 显示（样式见下方媒体查询） */
.mobile-bar { display: none; }
/* ===== Responsive (768px breakpoint) ===== */
@media (max-width: 1024px) {
  .list-grid--5{grid-template-columns:repeat(3,1fr)}
  .quality-grid{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .product-detail{grid-template-columns:1fr}
  .product-detail__gallery{position:static}
}

/* ============================================================
   响应式 — 手机 (≤768px)
   ------------------------------------------------------------
   手机端重排。PC 端是「多列网格 + 图片在上文字在下的大卡片」，
   等比压缩到 375px 会退化成一屏一张卡（首页曾被拉到 11k px）。
   这里按移动端阅读习惯重新排版：
     · 列表类（产品 / 案例 / 新闻 / 分类）→ 横向行卡片（左图右文，≈112px/行）
     · 图标类（选型要点 / 品质体系）      → 2 列磁贴 或 图标在左的行卡
     · 数据类（库存数据）                 → 2×2 磁贴
     · 内页侧边栏                         → 横向滚动 chips（原来是竖排整屏导航）
     · 页脚                               → 手风琴折叠
     · 底部固定操作栏（电话 / 询价 / 回顶）
   所有多列网格统一用 minmax(0,1fr)：1fr 的最小尺寸是 min-content，
   中文长标题会把列撑破视口，minmax(0,1fr) 才能真正收窄。
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --header-h: 56px;

    /* 手机端专用令牌 */
    --m-pad: 16px;        /* 页面左右安全边距 */
    --m-py: 44px;         /* 区块上下留白 */
    --m-img: 112px;       /* 产品/案例行卡片缩略图宽 */
    --m-img-sm: 104px;    /* 新闻行卡片缩略图宽 */
    --m-gap: 10px;        /* 网格间距 */
    --m-tap: 44px;        /* 最小触控尺寸 */
    --m-bar-h: 54px;      /* 底部操作栏高度 */
  }

  /* ---------- Header：PC 导航 → 汉堡菜单 ---------- */
  .header__nav { display: none; }
  .header__actions .header__cta { display: none; }
  .hamburger { display: flex; }

  /* ---------- 基础 / 防横向溢出 ---------- */
  html { -webkit-text-size-adjust: 100%; }
  body {
    /* 给底部固定操作栏让位（含刘海屏安全区） */
    padding-bottom: calc(var(--m-bar-h) + env(safe-area-inset-bottom, 0px));
  }
  /* iOS 上字号 <16px 的输入框聚焦时会自动放大页面 */
  input, textarea, select { font-size: 16px; }
  /* 手机端不做位移式入场，避免未进入视口的区块被推歪 */
  [data-aos] { opacity: 1 !important; transform: none !important; }

  .container { padding: 0 var(--m-pad); }
  .section { padding: var(--m-py) 0; }
  .section--tight { padding: 32px 0; }
  h1 { font-size: 1.7rem; }
  h2 { font-size: 1.4rem; }
  h3 { font-size: 1.1rem; }

  /* 区块头：居中标题改成左对齐，视觉重心更稳 */
  .section-header { text-align: left; margin-bottom: 24px; }
  .section-header .section-subtitle { margin-left: 0 !important; }
  .section-title { font-size: 1.34rem; margin-bottom: 8px; }
  .section-tag { font-size: 0.7rem; margin-bottom: 10px; }
  .section-subtitle { font-size: 0.88rem; }

  /* ---------- 顶部导航 ---------- */
  .hamburger { width: 44px; height: 44px; align-items: center; justify-content: center; padding: 0; }
  .mobile-nav { width: min(84vw, 320px); right: min(-84vw, -320px); padding: 20px 16px; }
  .mobile-nav__link { padding: 12px 14px; min-height: var(--m-tap); }
  .mobile-nav__sub a { min-height: 42px; display: flex; align-items: center; }

  /* ---------- Hero ---------- */
  /* PC 是固定高度 + 绝对定位内容；手机端改为内容撑开，避免文字贴边或溢出 */
  .hero {
    height: auto;
    min-height: 440px;
    display: flex;
    align-items: center;
  }
  .hero .swiper { position: absolute; inset: 0; height: 100%; }
  .hero__content {
    position: relative;
    inset: auto;
    width: 100%;
    justify-content: flex-start;
    padding: calc(var(--header-h) + 26px) var(--m-pad) 60px;
  }
  .hero__title { font-size: 1.68rem; max-width: 100%; margin-bottom: 10px; }
  .hero__subtitle {
    font-size: 0.9rem;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .hero__actions { flex-direction: column; gap: 10px; }
  .hero__actions .btn { width: 100%; justify-content: center; min-height: var(--m-tap); }
  /* 文字压在实景照片上，加深遮罩保证可读性 */
  .hero__overlay {
    background: linear-gradient(180deg,
      rgba(45, 45, 45, 0.72) 0%,
      rgba(45, 45, 45, 0.6) 45%,
      rgba(45, 45, 45, 0.86) 100%);
  }
  .hero__title,
  .hero__subtitle { text-shadow: 0 2px 12px rgba(0, 0, 0, 0.55); }

  /* ---------- 库存数据 → 2×2 磁贴 ---------- */
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--m-gap); }
  .stat-item { padding: 20px 12px; }
  .stat-item__number { font-size: 1.9rem; margin-bottom: 6px; }
  .stat-item__label { font-size: 0.78rem; line-height: 1.5; }

  /* ---------- 列表网格 → 单列 ---------- */
  .list-grid--2,
  .list-grid--3,
  .list-grid--4,
  .list-grid--5 { grid-template-columns: minmax(0, 1fr); gap: var(--m-gap); }

  /* ---------- 通用行卡片（产品分类 / 主推产品）---------- */
  /* 左图右文，行高恒定为缩略图高度，一屏可见 5–6 条 */
  .card { border-radius: var(--radius-sm); }
  .card:hover { transform: none; }        /* 触屏无 hover，去掉位移残留 */
  .card--product {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    min-height: var(--m-img);
  }
  /* 缩略图必须给定高度：只给宽度 + height:100% 的 img 会退化成
     按原图比例撑高，行高直接失控（实测每行 200px+） */
  .card--product .card__image {
    width: var(--m-img);
    min-width: var(--m-img);
    aspect-ratio: 1 / 1;
    align-self: center;
  }
  /* 分类卡在 PC 上是居中排版，手机端行卡片改回左对齐 */
  .card--product .card__body {
    flex: 1;
    min-width: 0;                         /* 允许长标题换行而不撑破网格 */
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;              /* 否则标签块会被拉成整行宽 */
    text-align: left !important;
  }
  .card__tag { font-size: 0.66rem; padding: 2px 8px; margin-bottom: 6px; }
  .card--product .card__title { font-size: 0.95rem; margin-bottom: 0; -webkit-line-clamp: 2; }
  /* 行卡片里描述会挤掉标题，省略掉，保留规格行（信息密度更高） */
  .card--product .card__desc { display: none; }
  .card--product .card__specs { margin-top: 6px; gap: 4px 12px; font-size: 0.72rem; }

  /* ---------- 区块头「标题 + 查看更多」行内 flex ---------- */
  /* 首页三处区块头用的是行内 style 的 flex 两端对齐容器，窄屏上
     「更多」按钮会挤到副标题右侧。这里改竖排（需 !important 压过行内样式）。 */
  .container > div[style*="align-items:flex-end"][style*="space-between"] {
    flex-direction: column !important;
    align-items: flex-start !important;
    margin-bottom: 22px !important;
    gap: 12px !important;
  }

  /* ---------- 工程案例 → 行卡片 ---------- */
  .card--case {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    min-height: var(--m-img);
  }
  .card--case .card__image {
    width: var(--m-img);
    min-width: var(--m-img);
    aspect-ratio: 1 / 1;
    align-self: center;
  }
  /* 行卡片图片太窄，放不下底部渐变浮层，改成左上角小标签 */
  .card--case .card__image::after { display: none; }
  .card--case .card__overlay-info {
    top: 6px;
    left: 6px;
    right: auto;
    bottom: auto;
    padding: 0;
  }
  .card--case .card__overlay-info .card__tag {
    margin-bottom: 0;
    font-size: 0.6rem;
    padding: 2px 6px;
  }
  .card--case .card__body {
    flex: 1;
    min-width: 0;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
  }
  .card--case .card__title { font-size: 0.95rem; margin-bottom: 6px; -webkit-line-clamp: 2; }
  /* 案例标题只有一行，留白太多，补回两行摘要撑满行卡片 */
  .card--case .card__desc { display: -webkit-box; -webkit-line-clamp: 2; font-size: 0.78rem; }

  /* ---------- 新闻 → 保持行卡片（PC 已是行卡，窄屏不要再堆叠）---------- */
  .card--news { flex-direction: row; align-items: center; min-height: var(--m-img-sm); }
  .card--news .card__image {
    width: var(--m-img-sm);
    min-width: var(--m-img-sm);
    min-height: 0;
    aspect-ratio: 1 / 1;
    align-self: center;
  }
  .card--news .card__body {
    padding: 12px 14px;
    justify-content: center;
    align-items: flex-start;
  }
  .card--news .card__title { font-size: 0.95rem; margin-bottom: 0; -webkit-line-clamp: 2; }
  .card--news .card__desc { display: none; }
  .card--news .card__date { font-size: 0.72rem; margin-top: 6px; }

  /* ---------- 选型要点（图标卡）→ 图标在左的行卡 ---------- */
  .features { grid-template-columns: minmax(0, 1fr); gap: var(--m-gap); }
  .feature-card {
    display: grid;
    grid-template-columns: 46px minmax(0, 1fr);
    column-gap: 12px;
    align-items: start;
    text-align: left;
    padding: 14px;
  }
  .feature-card:hover { transform: none; }
  .feature-card__icon {
    grid-column: 1;
    grid-row: 1 / span 2;
    width: 46px;
    height: 46px;
    margin: 0;
    font-size: 1.15rem;
  }
  .feature-card__title { grid-column: 2; grid-row: 1; font-size: 0.98rem; margin-bottom: 4px; }
  .feature-card__desc { grid-column: 2; grid-row: 2; font-size: 0.8rem; line-height: 1.6; }

  /* ---------- 品质·控制体系 → 2×2 磁贴 ---------- */
  .quality-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--m-gap); }
  .quality-card { padding: 18px 12px; }
  .quality-card__num { font-size: 1.7rem; margin-bottom: 6px; }
  .quality-card__title { font-size: 0.9rem; }
  .quality-card__desc { font-size: 0.72rem; line-height: 1.5; }

  /* ---------- CTA ---------- */
  .cta-section { padding: 40px 0; }
  .cta-section__title { font-size: 1.32rem; }
  .cta-section .btn { width: 100%; justify-content: center; min-height: var(--m-tap); }

  /* ---------- 按钮统一触控尺寸 ---------- */
  .btn { min-height: var(--m-tap); }
  .btn--lg { padding: 13px 22px; font-size: 0.95rem; }

  /* ---------- 内页 Banner / 面包屑 ---------- */
  .inner-banner { height: 156px; }
  .inner-banner__title { font-size: 1.28rem; }
  .inner-banner__subtitle { font-size: 0.82rem; }
  .breadcrumb { padding: 10px 0; font-size: 0.78rem; }
  .breadcrumb .container { display: flex; flex-wrap: wrap; align-items: center; }

  /* ---------- 内页布局 / 侧边栏 → 横向滚动 chips ---------- */
  /* PC 的侧栏在 768 以下是「整屏竖排栏目导航」，既占高度又挡住正文 */
  .page-layout { flex-direction: column; gap: 0; padding: 22px 0; }
  .page-sidebar { width: 100%; }
  .sidebar {
    position: static;
    margin-bottom: 16px;
    border: none;
    border-radius: 0;
    overflow: visible;
  }
  .sidebar__title { display: none; }
  .sidebar__nav {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 2px;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  .sidebar__nav::-webkit-scrollbar { display: none; }
  .sidebar__nav a {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 8px 15px;
    font-size: 0.82rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: #fff;
    white-space: nowrap;
  }
  .sidebar__nav a:last-child { border-bottom: 1px solid var(--border); }
  .sidebar__nav a:hover { padding-left: 15px; background: #fff; }
  .sidebar__nav a.active {
    border: 1px solid var(--accent-red);
    border-left-width: 1px;
    background: rgba(192, 57, 43, 0.06);
  }

  /* ---------- 规格表 / 参数表 ---------- */
  /* 表格在窄屏会撑破容器，包一层横向滚动 */
  .specs-table,
  .content-body table { display: block; overflow-x: auto; white-space: nowrap; }
  .specs-table th,
  .specs-table td,
  .content-body td,
  .content-body th { padding: 10px 12px; font-size: 0.82rem; }

  /* ---------- 产品详情 ---------- */
  .product-detail { padding: 22px 0; gap: 22px; }
  .product-detail__gallery { position: static; }
  .product-detail__info h1 { font-size: 1.36rem; margin-bottom: 12px; }
  .product-detail__params { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-bottom: 18px; }
  .product-detail__param { padding: 11px 12px; }
  .product-detail__param-value { font-size: 0.95rem; }
  .product-detail__tabs { margin-top: 26px; }
  .product-detail__tab-nav {
    overflow-x: auto;
    flex-wrap: nowrap;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  .product-detail__tab-nav::-webkit-scrollbar { display: none; }
  .product-detail__tab-nav button { flex-shrink: 0; padding: 12px 16px; font-size: 0.85rem; }
  .product-detail__tab-content { padding: 18px 0; font-size: 0.9rem; }

  /* ---------- 案例 / 新闻详情 ---------- */
  .case-detail__hero { aspect-ratio: 16/9; margin-bottom: 20px; }
  .case-detail__meta { gap: 12px; padding: 12px 14px; font-size: 0.8rem; }
  .news-detail__header h1 { font-size: 1.28rem; }
  .news-detail__meta { gap: 12px; font-size: 0.78rem; }
  .news-detail__prev-next { flex-direction: column; gap: 10px; margin-top: 26px; }
  .news-detail__prev-next a {
    max-width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    line-height: 1.5;
  }
  .content-body { font-size: 0.9rem; line-height: 1.8; }
  .content-body h2 { font-size: 1.24rem; margin: 24px 0 12px; }
  .content-body h3 { font-size: 1.05rem; margin: 18px 0 10px; }

  /* ---------- 表单 ---------- */
  .form-row { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .form-group input,
  .form-group textarea,
  .form-group select { min-height: var(--m-tap); padding: 11px 14px; }
  .form-actions { flex-direction: column; align-items: stretch; gap: 10px; }
  .form-actions .btn { justify-content: center; }
  .inquiry-form { padding: 18px; }
  .inquiry-form__captcha { flex-wrap: wrap; }
  .dealer-intro { padding: 18px; font-size: 0.88rem; }
  .subscribe-card { padding: 26px 18px; }
  .subscribe-form { flex-direction: column; }
  .subscribe-form .btn { justify-content: center; }
  .search-form input { padding: 12px 16px; }

  /* ---------- 联系我们 ---------- */
  .contact-grid { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .contact-info h2 { font-size: 1.26rem; margin-bottom: 14px; }
  .contact-info__item { padding: 12px 0; }
  .contact-map { min-height: 220px; }

  /* ---------- 分页 / 空状态 ---------- */
  .pagination { gap: 5px; margin-top: 26px; }
  .pagination a,
  .pagination span { min-width: var(--m-tap); height: var(--m-tap); font-size: 0.82rem; }
  .no-data { padding: 40px 16px; font-size: 0.9rem; }

  /* ---------- 页脚：品牌块常显 + 分组折叠 ---------- */
  .footer__grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding: 26px var(--m-pad) 18px;
  }
  .footer__brand-desc { font-size: 0.8rem; margin-bottom: 14px; }
  .footer__col { border-top: 1px solid rgba(255, 255, 255, 0.08); }
  .footer__col-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 52px;
    margin-bottom: 0;
    padding: 0;
    border-bottom: none;
    font-size: 0.9rem;
  }
  .footer__col-title::after {
    content: '\f078';                 /* chevron-down */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.72rem;
    color: #94A3B8;
    transition: transform var(--duration) var(--ease);
  }
  .footer__col.open .footer__col-title::after { transform: rotate(180deg); }
  /* 用 grid-template-rows 0fr↔1fr 做高度折叠动画（height:auto 不可动画） */
  .footer__col-body {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--duration) var(--ease);
  }
  .footer__col-body > div { overflow: hidden; }
  .footer__col.open .footer__col-body { grid-template-rows: 1fr; }
  .footer__links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 12px;
    padding-bottom: 12px;
  }
  .footer__links a { padding: 9px 0; min-height: 40px; font-size: 0.82rem; }
  .footer__contact-item { font-size: 0.8rem; padding: 5px 0; }
  .footer__qrcode { width: 96px; height: 96px; margin-top: 10px; }
  .footer__social a { width: 42px; height: 42px; }
  .friend-links { gap: 6px; padding: 14px 0; }
  .friend-links a { font-size: 0.76rem; padding: 4px 10px; }
  .footer__bottom-inner { flex-direction: column; text-align: center; gap: 8px; font-size: 0.76rem; }

  /* 右下角悬浮按钮在手机端与底部操作栏重复，隐藏 */
  .back-top,
  .online-service { display: none !important; }

  /* ---------- 移动端底部固定操作栏 ---------- */
  .mobile-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 95;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    height: calc(var(--m-bar-h) + env(safe-area-inset-bottom, 0px));
    padding-bottom: env(safe-area-inset-bottom, 0px);
    background: rgba(26, 26, 26, 0.96);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }
  .mobile-bar__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    border: none;
    background: none;
    font-family: inherit;
    font-size: 0.68rem;
    color: #94A3B8;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }
  .mobile-bar__item i { font-size: 1rem; }
  .mobile-bar__item:active { background: rgba(255, 255, 255, 0.06); }
  .mobile-bar__item--primary { color: #E8705F; }
  .mobile-bar__item--primary i { font-size: 1.05rem; }
}

/* ============================================================
   响应式 — 小屏手机 (≤480px)
   ============================================================ */
@media (max-width: 480px) {
  :root {
    --m-pad: 14px;
    --m-py: 36px;
    --m-img: 104px;
    --m-img-sm: 92px;
  }

  .section-title { font-size: 1.22rem; }
  .hero { min-height: 410px; }
  .hero__title { font-size: 1.5rem; }
  .hero__content { padding-top: calc(var(--header-h) + 20px); }

  /* 商品列较窄时仍保留 2 列，避免退化成超长单列 */
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat-item__number { font-size: 1.66rem; }
  .stat-item__label { font-size: 0.72rem; }
  .quality-card__title { font-size: 0.84rem; }
  .quality-card__desc { font-size: 0.68rem; }

  .card--product .card__title,
  .card--case .card__title,
  .card--news .card__title { font-size: 0.9rem; }
  .card--product .card__body,
  .card--case .card__body,
  .card--news .card__body { padding: 10px 12px; }
  .cta-section__title { font-size: 1.2rem; }
  .inner-banner { height: 140px; }
  .mobile-bar__item { font-size: 0.64rem; }
}

/* zzm-reviewed-demo-layout-154; original ZIP unchanged */
@media (min-width: 992px) and (max-width: 1599px) {
  .header__inner { gap: 16px; }
  .header__nav { display: none; }
  .header__actions { margin-left: auto; flex-shrink: 0; }
  .header__cta { white-space: nowrap; flex-shrink: 0; }
  .hamburger { display: flex; flex-shrink: 0; margin-left: 8px; }
}
@media (min-width: 1600px) {
  .header__inner { max-width: none; width: 100%; padding-left: 32px; padding-right: 32px; gap: 16px; }
  .header__nav a { white-space: nowrap; }
  .header__logo { min-width: 0; max-width: 300px; flex-shrink: 0; }
  .header__logo-text { min-width: 0; }
  .header__logo-name, .header__logo-sub { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .header__cta { white-space: nowrap; flex-shrink: 0; }
}