/* AI生成 */
/* ============================================
   华辰微科技 - 高端精密装备品牌官网样式
   蓝色科技感 · 大留白 · 超大标题 · 深色区块 · 数字滚动
   参考摩方精密(bmftec.cn)的排版节奏与信息架构
   ============================================ */

/* ===== Reset ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
[id]{scroll-margin-top:100px}
body{font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--c-text);background:var(--c-bg-white);line-height:1.7;overflow-x:hidden;font-size:15px}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .2s ease}
ul,ol{list-style:none}
button{border:none;cursor:pointer;font-family:inherit;background:none}
input,textarea,select{font-family:inherit;font-size:inherit}

/* ===== CSS Variables — 统一色彩管控 ===== */
:root{
  /* 主色：清晰有力的科技蓝（保留品牌识别，对比度增强） */
  --c-primary:#1F6FEB;
  --c-primary-dark:#1759C2;
  --c-primary-light:#3D8BFF;
  --c-primary-bg:#EAF2FE;
  --c-primary-bg-light:#F4F8FE;
  /* 深色区块（摩方式深色穿插） */
  --c-navy:#0A1F3C;
  --c-navy-2:#0E2A50;
  --c-navy-3:#12365F;
  /* 背景色 */
  --c-bg-white:#FFFFFF;
  --c-bg-light:#F7F9FC;
  --c-bg-gray:#EDF1F6;
  --c-bg-gray-dark:#E0E6EE;
  /* 文字色 */
  --c-text:#0C1B31;
  --c-text-light:#5A6B82;
  --c-text-muted:#96A2B3;
  /* 边框 */
  --c-border:#E2E8F0;
  --c-border-light:#EDF1F7;
  --c-border-dark:#C9D4E0;
  /* 辅助 */
  --c-white:#fff;
  --c-success:#2FA36B;
  /* 阴影 — 轻柔有层次 */
  --shadow-xs:0 1px 2px rgba(10,31,60,.05);
  --shadow-sm:0 2px 8px rgba(10,31,60,.06);
  --shadow-md:0 8px 28px rgba(10,31,60,.09);
  --shadow-lg:0 20px 50px rgba(10,31,60,.16);
  /* 圆角 */
  --radius:10px;
  --radius-lg:16px;
  --radius-xl:22px;
  /* 布局 */
  --max-w:1280px;
  --max-w-wide:1440px;
  --header-h:80px;
}

/* ===== Typography ===== */
h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;color:var(--c-text)}
h1{font-size:2.4rem}
h2{font-size:1.9rem}
h3{font-size:1.3rem}
h4{font-size:1.1rem}
p{color:var(--c-text-light);line-height:1.8}

/* 超大标题 — 摩方式层级 */
.display{font-size:clamp(2.4rem,5.5vw,4.2rem);font-weight:700;line-height:1.18;letter-spacing:.5px;color:var(--c-text)}
.display .accent{color:var(--c-primary)}

/* 区块标题组 */
.sec-head{text-align:center;margin-bottom:3rem}
.sec-head .kicker{display:inline-block;font-size:.78rem;letter-spacing:3px;text-transform:uppercase;color:var(--c-primary);font-weight:600;margin-bottom:12px}
.section-title{font-size:clamp(1.6rem,3vw,2.2rem);text-align:center;margin-bottom:.6rem;letter-spacing:.5px;font-weight:700;color:var(--c-text)}
.section-subtitle{text-align:center;color:var(--c-text-light);margin-bottom:3rem;font-size:.98rem;max-width:680px;margin-left:auto;margin-right:auto}

/* ===== Layout ===== */
.container{max-width:var(--max-w);margin:0 auto;padding:0 40px}
.container-wide{max-width:var(--max-w-wide);margin:0 auto;padding:0 40px}
.section{padding:88px 0}
.section-gray{background:var(--c-bg-light)}
.section-blue{background:var(--c-primary-bg-light)}
.section-deep{background:linear-gradient(160deg,var(--c-navy) 0%,var(--c-navy-3) 100%);color:var(--c-white)}
.grid{display:grid;gap:28px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.flex{display:flex}
.flex-center{display:flex;align-items:center;justify-content:center}
.flex-between{display:flex;align-items:center;justify-content:space-between}
.gap-16{gap:16px}
.gap-24{gap:24px}
.gap-32{gap:32px}
.mt-16{margin-top:16px}
.mt-24{margin-top:24px}
.mt-32{margin-top:32px}
.mb-16{margin-bottom:16px}
.mb-24{margin-bottom:24px}
.mb-32{margin-bottom:32px}
.text-center{text-align:center}
.text-primary{color:var(--c-primary)}

/* ===== Header ===== */
.header{position:fixed;top:0;left:0;right:0;height:var(--header-h);background:rgba(255,255,255,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--c-border-light);z-index:1000;transition:box-shadow .3s ease}
.header.scrolled{box-shadow:var(--shadow-sm)}
.header-inner{max-width:var(--max-w-wide);margin:0 auto;padding:0 40px;height:100%;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-size:1.05rem;font-weight:600;color:var(--c-text);flex-shrink:0}
.logo-img{height:46px;object-fit:contain;flex-shrink:0}
.logo-text{line-height:1.2}
.logo-text small{display:block;font-size:.65rem;font-weight:400;color:var(--c-text-muted);letter-spacing:.5px}
.nav{display:flex;align-items:stretch;gap:6px;height:100%}
.nav>a,.nav-item>a{font-size:.95rem;color:var(--c-text);position:relative;display:flex;align-items:center;padding:0 16px;height:100%;transition:color .2s ease;font-weight:500}
.nav>a:hover,.nav-item>a:hover{color:var(--c-primary)}
.nav>a.active,.nav-item>a.active{color:var(--c-primary);font-weight:600}
.nav>a::after,.nav-item>a::after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:3px;background:var(--c-primary);border-radius:3px 3px 0 0;transition:width .28s ease}
.nav>a:hover::after,.nav>a.active::after,.nav-item>a:hover::after,.nav-item>a.active::after{width:100%}

/* 下拉导航 */
.nav-item{position:relative;display:flex;align-items:stretch;height:100%}
.nav-item>a i{display:inline-block;width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;margin-left:7px;transition:transform .25s ease}
.nav-item:hover>a i{transform:rotate(180deg)}
.dropdown{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(12px);min-width:420px;background:var(--c-white);border:1px solid var(--c-border-light);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:14px;opacity:0;visibility:hidden;transition:opacity .25s ease,transform .25s ease,visibility .25s}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown::before{content:"";position:absolute;top:-8px;left:50%;width:16px;height:16px;background:var(--c-white);border-left:1px solid var(--c-border-light);border-top:1px solid var(--c-border-light);transform:translateX(-50%) rotate(45deg)}
.dropdown-inner{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.dropdown-inner a{display:block;padding:12px 16px;border-radius:8px;transition:background .2s ease,transform .2s ease}
.dropdown-inner a:hover{background:var(--c-primary-bg-light);transform:translateX(2px)}
.dropdown-inner a strong{display:block;font-size:.9rem;color:var(--c-text);font-weight:600;margin-bottom:2px}
.dropdown-inner a:hover strong{color:var(--c-primary)}
.dropdown-inner a small{display:block;font-size:.75rem;color:var(--c-text-muted)}

.lang-toggle{display:flex;align-items:center;gap:6px;font-size:.85rem;color:var(--c-text-light);cursor:pointer;padding:6px 14px;border:1px solid var(--c-border);border-radius:20px;transition:all .2s}
.lang-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}
.menu-btn{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.menu-btn span{width:22px;height:2px;background:var(--c-text);border-radius:1px;transition:.3s}

/* ===== Button ===== */
.btn{display:inline-flex;align-items:center;gap:10px;padding:12px 26px;border-radius:50px;font-size:.9rem;font-weight:500;transition:all .25s ease;cursor:pointer;white-space:nowrap;justify-content:center}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 20px rgba(31,111,235,.28)}
.btn-primary:hover{background:var(--c-primary-dark);box-shadow:0 12px 26px rgba(31,111,235,.36);transform:translateY(-2px)}
.btn-outline{background:var(--c-white);border:1px solid var(--c-border);color:var(--c-text)}
.btn-outline:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-bg-light)}
.btn-ghost{background:transparent;color:var(--c-primary);border:1px solid var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-bg)}
.btn-light{background:var(--c-white);color:var(--c-navy)}
.btn-light:hover{background:var(--c-primary-bg-light)}
.btn-outline-light{background:transparent;border:1px solid rgba(255,255,255,.45);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn-lg{padding:15px 34px;font-size:1rem}
.btn-sm{padding:8px 18px;font-size:.82rem}

/* 圆形箭头按钮 — 摩方式 hover 滑动 */
.arrow-link{display:inline-flex;align-items:center;gap:12px;font-size:.95rem;font-weight:500;color:var(--c-text)}
.arrow-link .dot{width:44px;height:44px;border-radius:50%;background:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;overflow:hidden;transition:background .3s ease}
.arrow-link .dot svg{width:18px;height:18px;fill:none;stroke:#fff;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;transition:transform .3s ease}
.arrow-link:hover{color:var(--c-primary)}
.arrow-link:hover .dot{background:var(--c-primary-dark)}
.arrow-link:hover .dot svg{transform:translateX(3px)}

/* ===== Hero ===== */
.hero{position:relative;padding-top:calc(var(--header-h) + 72px);padding-bottom:72px;background:
  radial-gradient(900px 480px at 88% -10%,rgba(31,111,235,.10) 0%,transparent 60%),
  radial-gradient(720px 420px at -8% 110%,rgba(61,139,255,.08) 0%,transparent 55%),
  linear-gradient(180deg,var(--c-bg-light) 0%,var(--c-bg-white) 100%);overflow:hidden}
.hero-inner{max-width:var(--max-w-wide);margin:0 auto;padding:0 40px;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:.8rem;font-weight:500;color:var(--c-primary);background:var(--c-primary-bg);border-radius:50px;padding:7px 16px;margin-bottom:24px}
.hero-content h1{font-size:clamp(2.5rem,5vw,3.9rem);font-weight:700;line-height:1.15;margin-bottom:22px;letter-spacing:.5px}
.hero-content h1 .accent{color:var(--c-primary)}
.hero-content .slogan{font-size:1.08rem;color:var(--c-text-light);margin-bottom:32px;max-width:520px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px}
.hero-tag{padding:8px 18px;background:var(--c-white);border:1px solid var(--c-border);border-radius:50px;font-size:.82rem;color:var(--c-text-light);box-shadow:var(--shadow-xs);transition:border-color .2s,color .2s}
.hero-tag:hover{border-color:var(--c-primary);color:var(--c-primary)}
.hero-visual{display:flex;align-items:center;justify-content:center;position:relative}
.hero-visual::before{content:"";position:absolute;width:88%;height:88%;border-radius:50%;background:radial-gradient(circle,rgba(31,111,235,.12) 0%,transparent 68%)}
.hero-visual img{max-width:100%;border-radius:var(--radius-xl);box-shadow:var(--shadow-md);position:relative}

/* ===== Page Banner ===== */
.page-banner{position:relative;padding-top:calc(var(--header-h) + 64px);padding-bottom:56px;background:
  radial-gradient(800px 420px at 85% -20%,rgba(31,111,235,.12) 0%,transparent 60%),
  linear-gradient(160deg,var(--c-navy) 0%,var(--c-navy-3) 100%);text-align:center;color:#fff;overflow:hidden}
.page-banner h1{font-size:clamp(1.9rem,4vw,2.8rem);margin-bottom:12px;color:#fff;font-weight:700}
.page-banner p{color:rgba(255,255,255,.72);font-size:1rem;max-width:640px;margin:0 auto}
.page-banner .crumb{display:inline-flex;gap:8px;align-items:center;font-size:.8rem;color:rgba(255,255,255,.55);margin-bottom:18px}
.page-banner .crumb a:hover{color:#fff}

/* ===== Cards ===== */
.card{background:var(--c-white);border:1px solid var(--c-border-light);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden;transition:box-shadow .3s ease,transform .3s ease}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.card-img{aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-gray)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-img img{transform:scale(1.05)}
.card-body{padding:24px}
.card-body h3{margin-bottom:10px;font-size:1.18rem}
.card-body p{font-size:.9rem;margin-bottom:14px}

/* ===== Product Card ===== */
.product-card{background:var(--c-white);border:1px solid var(--c-border-light);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden;transition:box-shadow .3s ease,transform .3s ease;display:flex;flex-direction:column}
.product-card:hover{box-shadow:var(--shadow-md);transform:translateY(-6px)}
.product-card .card-img{aspect-ratio:4/3;overflow:hidden;background:var(--c-bg-gray);border-bottom:1px solid var(--c-border-light)}
.product-card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.product-card:hover .card-img img{transform:scale(1.05)}
.product-card .card-body{padding:22px}
.product-spec{display:flex;justify-content:space-between;padding:7px 0;font-size:.84rem;border-bottom:1px solid var(--c-border-light)}
.product-spec:last-child{border-bottom:none}
.product-spec span:first-child{color:var(--c-text-muted)}
.product-spec span:last-child{color:var(--c-text);font-weight:600}
.card-tag{display:inline-block;padding:4px 12px;background:var(--c-primary-bg);color:var(--c-primary);border-radius:5px;font-size:.75rem;margin-right:6px;margin-bottom:4px;font-weight:500}

/* ===== Spec Block — 浅灰参数区块 ===== */
.spec-block{background:var(--c-bg-light);border:1px solid var(--c-border-light);border-radius:var(--radius);padding:18px;margin-top:12px}
.spec-block h4{font-size:.85rem;color:var(--c-text);margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid var(--c-border-light)}
.spec-row{display:flex;justify-content:space-between;padding:6px 0;font-size:.84rem;border-bottom:1px solid var(--c-border-light)}
.spec-row:last-child{border-bottom:none}
.spec-row span:first-child{color:var(--c-text-muted)}
.spec-row span:last-child{color:var(--c-text);font-weight:600}

/* ===== Spec Table ===== */
.spec-table{width:100%;border-collapse:collapse;font-size:.86rem;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-xs)}
.spec-table th,.spec-table td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--c-border-light)}
.spec-table th{background:var(--c-bg-gray);color:var(--c-text);font-weight:600;white-space:nowrap}
.spec-table td{color:var(--c-text-light);background:var(--c-white)}
.spec-table tr:hover td{background:var(--c-primary-bg-light)}

/* ===== Badges ===== */
.badge{display:inline-block;padding:5px 14px;border-radius:6px;font-size:.75rem;font-weight:600}
.badge-primary{background:var(--c-primary-bg);color:var(--c-primary)}
.badge-success{background:#E8F5EE;color:var(--c-success)}

/* ===== Category Nav ===== */
.category-nav{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;padding:8px 0;margin-bottom:40px}
.category-item{padding:9px 22px;border:1px solid var(--c-border);border-radius:50px;font-size:.86rem;color:var(--c-text-light);cursor:pointer;transition:all .2s ease;background:var(--c-white)}
.category-item:hover{border-color:var(--c-primary);color:var(--c-primary)}
.category-item.active{background:var(--c-primary);color:#fff;border-color:var(--c-primary);box-shadow:0 8px 18px rgba(31,111,235,.25)}

/* ===== 产品目录 ===== */
.product-directory{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:20px;background:var(--c-bg-light);border:1px solid var(--c-border-light);border-radius:var(--radius-lg);padding:26px}
.dir-group{min-width:0}
.dir-group h4{margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid var(--c-border)}
.dir-group h4 a{font-size:.95rem;font-weight:700;color:var(--c-text)}
.dir-group h4 a:hover{color:var(--c-primary)}
.dir-group>a{display:block;font-size:.84rem;color:var(--c-text-light);padding:4px 0;transition:color .2s ease,transform .2s ease}
.dir-group>a:hover{color:var(--c-primary);transform:translateX(2px)}

/* ===== Timeline ===== */
.timeline{position:relative;padding-left:30px}
.timeline::before{content:"";position:absolute;left:8px;top:0;bottom:0;width:2px;background:var(--c-border)}
.timeline-item{position:relative;margin-bottom:32px}
.timeline-item:last-child{margin-bottom:0}
.timeline-item::before{content:"";position:absolute;left:-28px;top:4px;width:14px;height:14px;border-radius:50%;background:var(--c-primary);border:3px solid var(--c-white);box-shadow:0 0 0 2px var(--c-primary)}
.timeline-year{font-size:.95rem;color:var(--c-primary);font-weight:700;margin-bottom:6px}
.timeline-content{font-size:.9rem;color:var(--c-text-light)}

/* ===== Forms ===== */
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:.85rem;color:var(--c-text);margin-bottom:7px;font-weight:600}
.form-label .req{color:var(--c-primary)}
.form-input,.form-select,.form-textarea{width:100%;padding:12px 16px;border:1px solid var(--c-border);border-radius:var(--radius);background:var(--c-white);color:var(--c-text);font-size:.9rem;transition:border-color .2s ease,box-shadow .2s ease}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(31,111,235,.1)}
.form-textarea{resize:vertical;min-height:110px}
.form-hint{font-size:.8rem;color:var(--c-text-muted)}

/* ===== Contact ===== */
.contact-item{display:flex;gap:18px;margin-bottom:24px;align-items:flex-start}
.contact-icon{width:48px;height:48px;border-radius:12px;background:var(--c-primary-bg);display:flex;align-items:center;justify-content:center;font-size:1.25rem;flex-shrink:0}
.contact-info h4{font-size:.95rem;margin-bottom:5px}
.contact-info p{font-size:.88rem;line-height:1.6}

/* ===== Partner ===== */
.partner-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.partner-logo{height:88px;border:1px solid var(--c-border);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--c-text-muted);font-size:.8rem;background:var(--c-white);box-shadow:var(--shadow-xs);transition:box-shadow .25s ease,transform .25s ease,color .25s}
.partner-logo:hover{box-shadow:var(--shadow-sm);transform:translateY(-3px);color:var(--c-primary)}
.partner-logo img{height:62px;width:auto;max-width:86%;object-fit:contain;display:block}

/* ===== Feature Icon ===== */
.feature-icon{width:52px;height:52px;border-radius:14px;background:var(--c-primary-bg);display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:var(--c-primary)}

/* ===== Stats ===== */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;text-align:center}
.stat-item{padding:36px 20px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-lg);transition:background .3s,transform .3s}
.stat-item:hover{background:rgba(255,255,255,.12);transform:translateY(-4px)}
.stat-num{font-size:clamp(2.4rem,4.5vw,3.6rem);font-weight:700;color:var(--c-primary);margin-bottom:6px;line-height:1}
.stat-num .unit{font-size:.5em;font-weight:600;margin-left:2px}
.stat-label{font-size:.88rem;color:var(--c-text-light)}

/* 深色区块内统计 */
.section-deep .stat-item{border-color:rgba(255,255,255,.14)}
.section-deep .stat-num{color:#fff}
.section-deep .stat-label{color:rgba(255,255,255,.7)}
.section-deep .section-title{color:#fff}
.section-deep .section-subtitle{color:rgba(255,255,255,.7)}
.section-deep p{color:rgba(255,255,255,.75)}

/* ===== 业务 Tab 切换（首页） ===== */
.biz{max-width:var(--max-w-wide);margin:0 auto;padding:0 40px}
.biz-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:center}
.biz-nav{display:flex;flex-direction:column;gap:14px}
.biz-tab{position:relative;display:flex;align-items:center;gap:18px;padding:20px 24px;border-radius:var(--radius-lg);cursor:pointer;transition:all .3s ease;border:1px solid transparent}
.biz-tab .idx{width:44px;height:44px;border-radius:50%;background:var(--c-white);border:1px solid var(--c-border);display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--c-text-muted);flex-shrink:0;transition:all .3s ease}
.biz-tab .t-title{font-size:1.05rem;font-weight:600;color:var(--c-text);margin-bottom:2px}
.biz-tab .t-desc{font-size:.82rem;color:var(--c-text-muted)}
.biz-tab:hover{border-color:var(--c-border)}
.biz-tab.active{background:var(--c-primary);box-shadow:0 16px 34px rgba(31,111,235,.3)}
.biz-tab.active .idx{background:var(--c-white);color:var(--c-primary);border-color:transparent}
.biz-tab.active .t-title{color:#fff}
.biz-tab.active .t-desc{color:rgba(255,255,255,.8)}
.biz-panel{display:none}
.biz-panel.active{display:block;animation:fadeUp .45s ease}
.biz-panel .biz-img{aspect-ratio:16/11;border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-md);margin-bottom:24px;display:flex;align-items:center;justify-content:center;background:linear-gradient(150deg,var(--c-primary-bg-light),var(--c-bg-gray))}
.biz-panel .biz-img img{width:100%;height:100%;object-fit:contain;padding:24px}
.biz-panel .biz-img-tall{aspect-ratio:2/3}
.biz-panel .biz-img-tall img{padding:8px}
.biz-panel h3{font-size:1.4rem;margin-bottom:10px}
.biz-panel>p{font-size:.95rem;margin-bottom:18px}
.biz-specs{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:22px}
.biz-spec{background:var(--c-bg-light);border-radius:var(--radius);padding:14px 16px;text-align:center}
.biz-spec b{display:block;font-size:1.1rem;color:var(--c-primary);margin-bottom:2px}
.biz-spec span{font-size:.75rem;color:var(--c-text-muted)}

@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

/* ===== Download ===== */
.download-link{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border:1px solid var(--c-border-light);border-radius:var(--radius);margin-bottom:10px;cursor:pointer;transition:border-color .2s ease,background .2s ease}
.download-link:hover{border-color:var(--c-primary);background:var(--c-primary-bg-light)}
.dl-info{display:flex;align-items:center;gap:14px}
.dl-icon{font-size:1.4rem}
.dl-name{font-size:.92rem;color:var(--c-text);font-weight:600}
.dl-size{font-size:.78rem;color:var(--c-text-muted)}

/* ===== Img Placeholder ===== */
.img-placeholder{background:linear-gradient(150deg,var(--c-bg-light),var(--c-bg-gray));border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--c-text-muted);font-size:.8rem;border:1px dashed var(--c-border-dark);position:relative}
.img-placeholder .label{padding:10px 14px;text-align:center}
.square{aspect-ratio:1}

/* ===== Reveal Animation ===== */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
.reveal-delay-1{transition-delay:.1s}
.reveal-delay-2{transition-delay:.2s}
.reveal-delay-3{transition-delay:.3s}

/* ===== Footer ===== */
.footer{background:linear-gradient(160deg,var(--c-navy) 0%,var(--c-navy-2) 100%);padding:68px 0 30px;color:#fff}
.footer-inner{max-width:var(--max-w-wide);margin:0 auto;padding:0 40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand h3{font-size:1.15rem;margin-bottom:14px;color:#fff}
.footer-brand p{font-size:.84rem;line-height:1.8;color:rgba(255,255,255,.6)}
.footer-col h4{font-size:.9rem;margin-bottom:16px;color:#fff}
.footer-col a{display:block;font-size:.84rem;color:rgba(255,255,255,.6);margin-bottom:10px;transition:color .2s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);font-size:.78rem;color:rgba(255,255,255,.45)}

/* ===== Toast ===== */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--c-navy);color:#fff;padding:13px 26px;border-radius:50px;font-size:.88rem;box-shadow:var(--shadow-lg);z-index:9999;opacity:0;transition:opacity .3s ease}
.toast.show{opacity:1}

/* ===== Mobile Menu ===== */
.menu-overlay{position:fixed;inset:0;background:rgba(10,31,60,.4);z-index:999;opacity:0;pointer-events:none;transition:opacity .3s ease}
.menu-overlay.open{opacity:1;pointer-events:auto}
.mobile-menu{position:fixed;top:0;right:0;bottom:0;width:300px;background:var(--c-white);z-index:1001;transform:translateX(100%);transition:transform .3s ease;display:flex;flex-direction:column;padding:24px;gap:4px;box-shadow:var(--shadow-lg);overflow-y:auto}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu a{padding:13px 16px;font-size:.98rem;color:var(--c-text);border-radius:var(--radius);transition:background .2s ease}
.mobile-menu a:hover,.mobile-menu a.active{background:var(--c-primary-bg);color:var(--c-primary)}
.mobile-menu .m-group{margin-bottom:2px}
.mobile-menu .m-group>a{font-weight:600}
.mobile-menu .m-group .m-sub a{padding:9px 16px 9px 28px;font-size:.88rem;color:var(--c-text-light)}

/* ============================================
   Responsive
   ============================================ */
@media(max-width:1024px){
  html{font-size:15px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
  .partner-grid{grid-template-columns:repeat(3,1fr)}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:-1}
  .hero-visual img{max-width:70%}
  .biz-layout{grid-template-columns:1fr;gap:36px}
  .nav>a,.nav-item>a{padding:0 10px;font-size:.88rem}
}

@media(max-width:768px){
  .nav,.lang-toggle{display:none}
  .menu-btn{display:flex}
  .hero{padding-top:calc(var(--header-h) + 40px);padding-bottom:48px}
  .hero-content h1{font-size:2.1rem}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px;text-align:center}
  .form-row{grid-template-columns:1fr}
  .partner-grid{grid-template-columns:repeat(2,1fr)}
  .product-card[style*="flex-direction:row"]{flex-direction:column!important}
  .product-card[style*="flex-direction:row"] .card-img{flex:none!important;width:100%}
  .section{padding:56px 0}
  .section-title{font-size:1.6rem}
  .container,.container-wide,.header-inner,.footer-inner,.hero-inner,.biz{padding-left:20px;padding-right:20px}
  .page-banner{padding-top:calc(var(--header-h) + 40px);padding-bottom:40px}
  .page-banner h1{font-size:1.6rem}
  .biz-tab{padding:16px 18px}
  .biz-specs{grid-template-columns:repeat(3,1fr)}
}

@media(max-width:480px){
  .stats-grid{grid-template-columns:1fr}
  .partner-grid{grid-template-columns:1fr}
  .hero-tag{font-size:.74rem;padding:5px 13px}
  .stat-num{font-size:2rem}
  .biz-specs{grid-template-columns:1fr 1fr}
  .hero-visual img{max-width:100%}
}