/* ========== 基础重置 ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
                 "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: #102A33;
    line-height: 1.6;
    background: #FCFDFB;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* ========== CSS 变量 ========== */
:root {
    --c-primary: #174E61;
    --c-primary-2: #2C7180;
    --c-cyan: #58A6A6;
    --c-gold: #B4874A;
    --c-gold-2: #D4B477;
    --c-bg-soft: #F5F7F3;
    --c-bg-blue: #EDF5F3;
    --c-text: #102A33;
    --c-text-2: #536970;
    --c-text-3: #84969A;
    --c-border: #DCE7E4;
    --grad-blue: linear-gradient(135deg, #174E61 0%, #2C7180 55%, #58A6A6 100%);
    --grad-blue-soft: linear-gradient(135deg, #DDECEA 0%, #EEF5F2 100%);
    --grad-gold: linear-gradient(135deg, #A8783C 0%, #D4B477 100%);
    --shadow-sm: 0 6px 20px rgba(16, 42, 51, .06);
    --shadow-md: 0 14px 38px rgba(16, 42, 51, .09);
    --shadow-lg: 0 28px 80px rgba(16, 42, 51, .14);
    --radius-sm: 10px;
    --radius: 18px;
    --radius-lg: 30px;
}

/* ========== 容器 ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== 导航栏 ========== */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    background: rgba(252, 253, 251, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(220, 231, 228, .72);
    z-index: 100;
    transition: all .3s;
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 20px;
    color: var(--c-primary);
}
.brand img { height: 42px; width: auto; filter: drop-shadow(0 5px 10px rgba(23, 78, 97, .12)); }
.brand-sub { font-size: 11px; color: var(--c-text-3); font-weight: 400; letter-spacing: 1px; }

.nav-list { display: flex; gap: 36px; }
.nav-list a {
    font-size: 15px;
    color: var(--c-text-2);
    font-weight: 600;
    position: relative;
    padding: 4px 0;
    transition: color .2s;
}
.nav-list a:hover { color: var(--c-primary); }
.nav-list a.active { color: var(--c-primary); }
.nav-list a.active::after {
    content: "";
    position: absolute;
    bottom: -6px; left: 50%;
    transform: translateX(-50%);
    width: 24px; height: 2px;
    background: var(--grad-blue);
    border-radius: 2px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: 0;
    cursor: pointer;
    padding: 6px;
}
.nav-toggle span {
    width: 24px; height: 2px;
    background: var(--c-text);
    border-radius: 2px;
    transition: all .3s;
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 999px;
    border: 0;
    cursor: pointer;
    transition: all .25s;
}
.btn-primary {
    background: var(--grad-blue);
    color: #fff;
    box-shadow: 0 10px 28px rgba(23, 78, 97, .24);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 36px rgba(23, 78, 97, .3);
}
.btn-gold {
    background: var(--grad-gold);
    color: #fff;
    box-shadow: 0 8px 24px rgba(201, 169, 97, .3);
}
.btn-gold:hover { transform: translateY(-2px); }
.btn-outline {
    background: transparent;
    color: var(--c-primary);
    border: 1.5px solid var(--c-primary);
}
.btn-outline:hover { background: var(--c-primary); color: #fff; }

/* ========== Hero ========== */
.hero {
    min-height: 820px;
    padding: 150px 0 88px;
    background:
        radial-gradient(ellipse at 15% 0%, rgba(88, 166, 166, .18) 0%, transparent 48%),
        radial-gradient(ellipse at 85% 44%, rgba(180, 135, 74, .12) 0%, transparent 45%),
        linear-gradient(180deg, #F5F9F7 0%, #FCFDFB 100%);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}
.hero::before {
    content: "";
    position: absolute;
    top: 10%; right: -10%;
    width: 600px; height: 600px;
    background: var(--grad-blue-soft);
    border-radius: 50%;
    filter: blur(80px);
    opacity: .72;
    z-index: 0;
}
.hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
}
.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(23, 78, 97, .08);
    border: 1px solid rgba(23, 78, 97, .1);
    color: var(--c-primary);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
}
.hero-tag::before {
    content: "";
    width: 6px; height: 6px;
    background: var(--c-gold);
    border-radius: 50%;
}
.hero h1 {
    font-size: 62px;
    line-height: 1.15;
    font-weight: 800;
    color: var(--c-text);
    margin-bottom: 16px;
    letter-spacing: -1.8px;
}
.hero h1 .grad {
    background: var(--grad-blue);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero h1 .gold {
    background: var(--grad-gold);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-sub {
    font-size: 20px;
    color: var(--c-text-2);
    margin-bottom: 36px;
    max-width: 560px;
    line-height: 1.7;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-card {
    width: 100%;
    max-width: 480px;
    aspect-ratio: 4/5;
    background: var(--grad-blue);
    border-radius: 36px 36px 96px 36px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    padding: 32px;
}
.hero-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, .25), transparent 50%);
}
.hero-card img {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: center top;
    z-index: 0;
}
.hero-card-text {
    position: relative;
    z-index: 1;
    color: #fff;
}
.hero-card-text h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    text-shadow: 0 2px 12px rgba(0, 0, 0, .3);
}
.hero-card-text p {
    font-size: 14px;
    opacity: .9;
}
.hero-floating {
    position: absolute;
    background: #fff;
    border-radius: 18px;
    border: 1px solid rgba(220, 231, 228, .92);
    padding: 14px 20px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 2;
}
.hero-floating.f1 { top: 10%; left: -30px; animation: float 6s ease-in-out infinite; }
.hero-floating.f2 { bottom: 15%; right: -40px; animation: float 6s ease-in-out infinite 3s; }
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}
.hero-floating-icon {
    width: 36px; height: 36px;
    border-radius: 10px;
    background: var(--grad-blue);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0;
}
.hero-floating-icon.gold { background: var(--grad-gold); }
.hero-floating-text { line-height: 1.2; }
.hero-floating-text .t1 { font-size: 11px; color: var(--c-text-3); }
.hero-floating-text .t2 { font-size: 15px; font-weight: 700; color: var(--c-text); }

/* ========== 通用 Section ========== */
.section { padding: 108px 0; }
.section-soft { background: linear-gradient(180deg, #F7F8F5 0%, #F3F6F2 100%); }
.section-blue { background: linear-gradient(145deg, #EAF3F1 0%, #F5F8F4 100%); }

.section-head { text-align: center; margin-bottom: 64px; }
.section-eyebrow {
    display: inline-block;
    font-size: 13px;
    color: var(--c-primary);
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 12px;
    padding: 4px 14px;
    background: rgba(23, 78, 97, .08);
    border: 1px solid rgba(23, 78, 97, .1);
    border-radius: 999px;
}
.section-title {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--c-text);
    letter-spacing: -0.5px;
}
.section-title .grad {
    background: var(--grad-blue);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.section-desc {
    font-size: 17px;
    color: var(--c-text-2);
    max-width: 720px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ========== 数据条 ========== */
.stats {
    background: var(--grad-blue);
    padding: 60px 0;
    color: #fff;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}
.stat-num {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 8px;
    letter-spacing: -1px;
}
.stat-num .plus { color: var(--c-gold-2); }
.stat-label { font-size: 14px; opacity: .9; }

/* ========== 产品卡 ========== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.product-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--c-border);
    transition: all .3s;
    position: relative;
}
.product-card::after {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: var(--grad-gold);
    opacity: .7;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--c-primary-2);
}
.product-image {
    aspect-ratio: 1/1;
    background: linear-gradient(145deg, #FFFFFF 0%, #EEF5F3 100%);
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}
.product-image img {
    width: 100%; height: 100%;
    object-fit: contain;
    padding: 18px;
    transition: transform .5s;
}
.product-card:hover .product-image img { transform: scale(1.025); }
.product-badge {
    position: absolute;
    top: 16px; left: 16px;
    background: var(--grad-gold);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 999px;
    z-index: 2;
}
.product-body { padding: 30px; }
.product-cat {
    font-size: 12px;
    color: var(--c-primary);
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 8px;
}
.product-name {
    font-size: 22px;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 8px;
    line-height: 1.3;
}
.product-tag {
    font-size: 13px;
    color: var(--c-gold);
    font-weight: 600;
    margin-bottom: 14px;
}
.product-desc {
    font-size: 14px;
    color: var(--c-text-2);
    line-height: 1.65;
    margin-bottom: 20px;
    min-height: 70px;
}
.product-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}
.product-meta span {
    font-size: 12px;
    padding: 4px 10px;
    background: #F0F5F2;
    color: var(--c-text-2);
    border-radius: 6px;
    font-weight: 500;
}
.product-foot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 18px;
    border-top: 1px solid var(--c-border);
}
.product-price { font-size: 22px; font-weight: 800; color: var(--c-primary); }
.product-price small { font-size: 13px; color: var(--c-text-3); font-weight: 400; }
.product-link {
    color: var(--c-primary);
    font-size: 13px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.product-link:hover { gap: 8px; }

/* ========== 团队/故事模块 ========== */
.story-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 60px;
    align-items: center;
}
.story-img {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
    aspect-ratio: 4/5;
    background: var(--grad-blue-soft);
    outline: 1px solid rgba(255, 255, 255, .72);
    outline-offset: -10px;
}
.story-img img { width: 100%; height: 100%; object-fit: cover; }
.story-img-tag {
    position: absolute;
    bottom: 24px; left: 24px;
    background: rgba(255, 255, 255, .95);
    backdrop-filter: blur(10px);
    padding: 14px 20px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 12px;
}
.story-img-tag .ic {
    width: 40px; height: 40px;
    background: var(--grad-gold);
    color: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}
.story-img-tag .tx { line-height: 1.3; }
.story-img-tag .t1 { font-size: 11px; color: var(--c-text-3); }
.story-img-tag .t2 { font-size: 14px; font-weight: 700; color: var(--c-text); }
.story-content h2 {
    font-size: 40px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}
.story-content h2 .grad {
    background: var(--grad-blue);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.story-content p {
    font-size: 16px;
    color: var(--c-text-2);
    line-height: 1.8;
    margin-bottom: 16px;
}
.story-content .quote {
    padding: 20px 24px;
    background: var(--c-bg-blue);
    border-left: 3px solid var(--c-gold);
    border-radius: 8px;
    color: var(--c-text);
    font-size: 15px;
    line-height: 1.7;
    margin: 20px 0;
    font-style: italic;
}
.story-list { margin-top: 24px; }
.story-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0;
    font-size: 15px;
    color: var(--c-text);
}
.story-list li::before {
    content: "";
    flex-shrink: 0;
    width: 18px; height: 18px;
    margin-top: 4px;
    background: var(--grad-blue);
    -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'><path d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/></svg>") center/contain no-repeat;
    mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'><path d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/></svg>") center/contain no-repeat;
}

/* ========== 荣誉/资质墙 ========== */
.honors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.honor-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 30px 22px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--c-border);
    transition: all .3s;
}
.honor-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(44, 113, 128, .42);
}
.honor-icon {
    width: 56px; height: 56px;
    margin: 0 auto 16px;
    background: var(--grad-blue-soft);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-primary);
    font-size: 24px;
    font-weight: 800;
}
.honor-card h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--c-text);
}
.honor-card p {
    font-size: 13px;
    color: var(--c-text-3);
    line-height: 1.5;
}

.honors-wall {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-top: 48px;
}
.honors-wall img { width: 100%; height: auto; display: block; }

/* ========== 产品详情（产品中心页） ========== */
.product-detail {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
}
.product-detail .product-image { aspect-ratio: auto; min-height: 480px; padding: 24px; }
.product-detail-body { padding: 48px; display: flex; flex-direction: column; justify-content: center; }
.product-detail-body h3 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 8px;
    line-height: 1.2;
}
.product-detail-body .sub {
    font-size: 14px;
    color: var(--c-gold);
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 20px;
}
.product-detail-body p {
    color: var(--c-text-2);
    font-size: 15px;
    line-height: 1.75;
    margin-bottom: 20px;
}
.spec-list {
    margin: 16px 0 24px;
    border-top: 1px solid var(--c-border);
    padding-top: 20px;
}
.spec-list li {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px dashed var(--c-border);
    font-size: 14px;
    gap: 24px;
}
.spec-list .k { color: var(--c-text-3); }
.spec-list .v { color: var(--c-text); font-weight: 600; }

/* ========== 时间线（科研） ========== */
.timeline { position: relative; padding: 20px 0; }
.timeline::before {
    content: "";
    position: absolute;
    left: 120px; top: 0; bottom: 0;
    width: 2px;
    background: var(--c-border);
}
.tl-item {
    display: flex;
    align-items: flex-start;
    gap: 40px;
    padding: 20px 0;
    position: relative;
}
.tl-year {
    flex-shrink: 0;
    width: 90px;
    text-align: right;
    font-size: 20px;
    font-weight: 800;
    color: var(--c-primary);
    padding-top: 2px;
}
.tl-dot {
    position: absolute;
    left: 112px; top: 30px;
    width: 18px; height: 18px;
    background: #fff;
    border: 3px solid var(--c-primary);
    border-radius: 50%;
    z-index: 1;
}
.tl-content {
    flex: 1;
    padding-left: 36px;
}
.tl-content h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 4px;
}
.tl-content p {
    color: var(--c-text-2);
    font-size: 14px;
    line-height: 1.65;
}

/* ========== 联系卡片 ========== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.contact-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--c-border);
    transition: all .3s;
}
.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.contact-icon {
    width: 56px; height: 56px;
    margin: 0 auto 18px;
    background: var(--grad-blue);
    color: #fff;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 700;
}
.contact-card h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
}
.contact-card p {
    font-size: 14px;
    color: var(--c-text-2);
    line-height: 1.6;
}
.contact-card .big {
    font-size: 20px;
    color: var(--c-primary);
    font-weight: 700;
    margin: 8px 0 4px;
}

/* ========== 表单 ========== */
.contact-form {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 48px;
    margin-top: 48px;
    box-shadow: var(--shadow-md);
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 13px;
    color: var(--c-text-2);
    margin-bottom: 6px;
    font-weight: 500;
}
.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--c-border);
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    color: var(--c-text);
    background: #fff;
    transition: border-color .2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: 0;
    border-color: var(--c-primary);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-note {
    margin-top: 12px;
    color: var(--c-text-3);
    font-size: 12px;
    line-height: 1.6;
    text-align: center;
}

/* ========== 页脚 ========== */
.footer {
    background: linear-gradient(145deg, #102A33 0%, #123F4C 100%);
    color: #B8C9C9;
    padding: 64px 0 32px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}
.footer-brand {
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.footer-brand img { height: 36px; background: #fff; border-radius: 8px; padding: 4px 8px; }
.footer p { font-size: 14px; line-height: 1.7; opacity: .8; }
.footer h5 {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 18px;
}
.footer ul li { padding: 6px 0; font-size: 14px; }
.footer ul a { transition: color .2s; }
.footer ul a:hover { color: var(--c-cyan); }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 13px;
    opacity: .7;
}

/* ========== 页面头（子页 banner） ========== */
.page-hero {
    padding: 160px 0 80px;
    background:
        radial-gradient(ellipse at 80% 20%, rgba(88, 166, 166, .15) 0%, transparent 50%),
        radial-gradient(ellipse at 18% 70%, rgba(180, 135, 74, .09) 0%, transparent 42%),
        linear-gradient(180deg, #F4F8F6 0%, #FCFDFB 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-hero::before {
    content: "";
    position: absolute;
    top: -100px; right: -100px;
    width: 400px; height: 400px;
    background: var(--grad-blue-soft);
    border-radius: 50%;
    filter: blur(60px);
    opacity: .5;
}
.page-hero-inner { position: relative; z-index: 1; }
.page-hero h1 {
    font-size: 52px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}
.page-hero h1 .grad {
    background: var(--grad-blue);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.page-hero p {
    font-size: 18px;
    color: var(--c-text-2);
    max-width: 680px;
    margin: 0 auto;
}
.breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--c-text-3);
    margin-bottom: 16px;
}
.breadcrumb a { color: var(--c-text-3); }
.breadcrumb a:hover { color: var(--c-primary); }

/* ========== 信息与合规提示 ========== */
.product-notice-wrap {
    margin-top: -30px;
    position: relative;
    z-index: 3;
}
.compliance-panel {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    max-width: 920px;
    margin: 46px auto 0;
    padding: 22px 26px;
    border: 1px solid rgba(44, 113, 128, .2);
    border-left: 4px solid var(--c-primary-2);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, .84);
    box-shadow: var(--shadow-sm);
}
.compliance-panel.compact { margin-top: 0; }
.compliance-mark {
    flex: 0 0 auto;
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: #fff;
    background: var(--grad-blue);
    font-family: Georgia, serif;
    font-weight: 700;
}
.compliance-panel strong { display: block; color: var(--c-text); font-size: 15px; margin-bottom: 4px; }
.compliance-panel p { color: var(--c-text-2); font-size: 13px; line-height: 1.75; }
.footer-disclaimer {
    margin: 8px 0 28px;
    padding: 16px 18px;
    border-radius: 12px;
    background: rgba(255, 255, 255, .055);
    border: 1px solid rgba(255, 255, 255, .08);
    color: #B8C9C9;
    font-size: 12px;
    line-height: 1.75;
}

/* ========== 动画 ========== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .8s, transform .8s;
}
.fade-in.show {
    opacity: 1;
    transform: translateY(0);
}

/* ========== 响应式 ========== */
@media (max-width: 960px) {
    .nav-list { display: none; position: absolute; top: 76px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px; border-bottom: 1px solid var(--c-border); box-shadow: var(--shadow-md); gap: 0; }
    .nav-list.open { display: flex; }
    .nav-list a { padding: 12px 0; border-bottom: 1px solid var(--c-border); }
    .nav-list a:last-child { border-bottom: 0; }
    .nav-toggle { display: flex; }
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero { min-height: auto; }
    .hero h1 { font-size: 42px; }
    .hero-sub { font-size: 17px; }
    .hero-visual { max-width: 400px; margin: 0 auto; }
    .hero-floating.f1 { left: 0; }
    .hero-floating.f2 { right: 0; }
    .section { padding: 60px 0; }
    .section-title { font-size: 30px; }
    .page-hero { padding: 120px 0 60px; }
    .page-hero h1 { font-size: 34px; }
    .products-grid { grid-template-columns: 1fr; }
    .story-grid { grid-template-columns: 1fr; gap: 32px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .honors-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .product-detail { grid-template-columns: 1fr; }
    .product-detail .product-image { min-height: 320px; }
    .product-detail-body { padding: 32px 24px; }
    .form-row { grid-template-columns: 1fr; }
    .contact-form { padding: 28px 20px; }
    .timeline::before { left: 12px; }
    .tl-year { width: 60px; font-size: 14px; }
    .tl-dot { left: 4px; }
    .tl-content { padding-left: 28px; }
    .tl-item { gap: 12px; }
}
@media (max-width: 600px) {
    .container { padding: 0 16px; }
    .hero { padding: 110px 0 50px; }
    .hero h1 { font-size: 32px; }
    .hero-sub { font-size: 15px; }
    .section-title { font-size: 26px; }
    .stat-num { font-size: 36px; }
    .footer-grid { grid-template-columns: 1fr; }
    .hero-floating { padding: 10px 14px; }
    .hero-floating.f1 { left: -10px; top: 5%; }
    .hero-floating.f2 { right: -10px; bottom: 8%; }
    .compliance-panel { padding: 18px; gap: 12px; }
    .compliance-mark { width: 30px; height: 30px; }
    .spec-list li { align-items: flex-start; }
    .spec-list .v { text-align: right; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
}