/* ============================================================
 * 喷雾干燥机主题 - 打包合并样式
 * 包含: header.css + main.css
 * 合并以减少 HTTP 请求数，缩短渲染阻塞时间
 * ============================================================ */

/* === Tailwind 自定义工具类 === */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.content-auto { content-visibility: auto; }
.text-shadow { text-shadow: 0 2px 8px rgba(0,0,0,0.25); }
.card-hover { transition: transform 0.3s ease, box-shadow 0.3s ease; }
.card-hover:hover { transform: translateY(-6px); box-shadow: 0 10px 24px rgba(0,87,184,0.12); }
.btn-flow { position: relative; overflow: hidden; }
.btn-flow::after {
    content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.6s ease;
}
.btn-flow:hover::after { left: 100%; }
.scroll-fade { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; will-change: opacity, transform; }
.scroll-fade.active { opacity: 1; transform: translateY(0); }
.img-scale { transition: transform 0.4s ease; }
.img-scale:hover { transform: scale(1.03); }
.touch-block { min-height: 48px; min-width: 48px; display: flex; align-items: center; }
.scrollbar-hide::-webkit-scrollbar { display: none; }
.scrollbar-hide { -ms-overflow-style: none; scrollbar-width: none; }
.line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.line-clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* === 全局基础重置 === */
* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; font-size: 14px; }
@media (min-width: 640px) { html { font-size: 15px; } }
@media (min-width: 1024px) { html { font-size: 16px; } }
body { overflow-x: hidden; line-height: 1.6; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
input, select, textarea { font-family: inherit; font-size: 1rem; }
img { max-width: 100%; height: auto; display: block; }
button { border: none; background: transparent; cursor: pointer; }

/* === 导航栏 === */
#navbar { box-shadow: 0 2px 20px rgba(0,0,0,0.04); will-change: background, box-shadow; transition: background 0.35s ease, box-shadow 0.35s ease; }
.nav-scrolled { background: rgba(255,255,255,0.97) !important; box-shadow: 0 4px 24px rgba(0,0,0,0.08) !important; }
#navProgressBar { position: absolute; bottom: 0; left: 0; height: 3px; border-radius: 0 3px 0 0; background: linear-gradient(90deg, #0057b8, #ff6b00); transition: width 0.25s ease; will-change: width; }

/* === 菜单项下划线动画 === */
.nav-link-underline { position: relative; }
.nav-link-underline::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 0; height: 2px; background: #0057b8; border-radius: 2px; transition: width 0.3s ease; }
.nav-link-underline:hover::after, .nav-link-underline.active::after { width: 24px; }

/* === PC 下拉菜单 === */
.dropdown-group { position: relative; }
.dropdown-menu { position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%) translateY(10px); background: #fff; border-radius: 16px; box-shadow: 0 20px 50px rgba(0,0,0,0.12), 0 0 0 1px rgba(0,0,0,0.04); padding: 12px 0; min-width: 200px; opacity: 0; visibility: hidden; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); pointer-events: none; z-index: 50; }
.dropdown-group:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); pointer-events: auto; }
.dropdown-menu::before { content: ''; position: absolute; top: -6px; left: 50%; transform: translateX(-50%) rotate(45deg); width: 12px; height: 12px; background: #fff; border-left: 1px solid rgba(0,0,0,0.04); border-top: 1px solid rgba(0,0,0,0.04); border-radius: 3px; }

/* === 移动端菜单 === */
.mobile-mask { position: fixed; inset: 0; background: rgba(0,0,0,0.45); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); z-index: 40; opacity: 0; visibility: hidden; transition: all 0.4s ease; }
.mobile-mask.show { opacity: 1; visibility: visible; }
.mobile-panel { position: fixed; top: 0; right: 0; width: 85%; max-width: 380px; height: 100%; background: #fff; z-index: 50; box-shadow: -10px 0 40px rgba(0,0,0,0.2); transform: translateX(100%); transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1); overflow-y: auto; }
.mobile-panel.show { transform: translateX(0); }
.hamburger-line { transition: all 0.35s ease; transform-origin: center; }
.hamburger.active .line1 { transform: translateY(7px) rotate(45deg); }
.hamburger.active .line2 { opacity: 0; transform: scaleX(0); }
.hamburger.active .line3 { transform: translateY(-7px) rotate(-45deg); }
.mobile-sub-toggle i { transition: transform 0.3s ease; }
.mobile-sub-toggle.active i { transform: rotate(180deg); }

/* === Logo === */
.logo-wrapper { display: flex; align-items: center; gap: 12px; }
.logo-img { max-height: 50px; width: auto; object-fit: contain; transition: opacity 0.3s; }
@media (max-width: 640px) { .logo-img { max-height: 40px; } }

/* === 移动端底部信息 === */
.mobile-bottom-info { padding: 16px; background: #f9fafb; border-radius: 12px; margin: 24px 0; font-size: 12px; color: #6b7280; line-height: 1.8; }

/* === Banner 轮播 === */
.banner-carousel { position: relative; overflow: hidden; }
.carousel-track { position: relative; }
.carousel-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity 0.8s ease, visibility 0.8s ease; will-change: opacity; backface-visibility: hidden; }
.carousel-slide:first-child { position: relative; }
.carousel-slide.active { opacity: 1; visibility: visible; z-index: 2; }
.carousel-dots { position: absolute; bottom: 64px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 10; }
.carousel-dot { width: 12px; height: 12px; border-radius: 50%; background: rgba(255,255,255,0.45); border: 1px solid rgba(255,255,255,0.7); transition: all 0.3s ease; cursor: pointer; }
.carousel-dot.active, .carousel-dot:hover { background: #fff; border-color: #fff; transform: scale(1.2); }
.carousel-arrow { position: absolute; top: 50%; transform: translateY(-50%); z-index: 10; width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,0.2); color: #fff; font-size: 22px; display: flex; align-items: center; justify-content: center; border: none; cursor: pointer; opacity: 0; transition: opacity 0.3s ease, background 0.3s ease; }
.carousel-arrow:hover { background: rgba(255,255,255,0.3); }
.banner-carousel:hover .carousel-arrow { opacity: 1; }
.carousel-prev { left: 20px; }
.carousel-next { right: 20px; }
@media (max-width: 640px) {
    .carousel-dots { bottom: 56px; gap: 8px; }
    .carousel-dot { width: 10px; height: 10px; }
    .carousel-arrow { width: 36px; height: 36px; font-size: 18px; }
    .carousel-prev { left: 10px; }
    .carousel-next { right: 10px; }
}

/* === FAQ 手风琴 === */
.faq-content { max-height: 0; overflow: hidden; transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1); will-change: max-height; }
.faq-item.active .faq-content { max-height: 800px; }

/* === 返回顶部 === */
#backTop { opacity: 0; visibility: hidden; transition: opacity 0.35s ease, visibility 0.35s ease, transform 0.35s ease; transform: translateY(8px); will-change: opacity, transform; }
#backTop.visible { opacity: 1; visibility: visible; transform: translateY(0); }

/* === 全局导航文字抗锯齿 === */
#navbar .nav-link-underline { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

/* ============================================================
   以下为 main.css 内容
   ============================================================ */

/* WordPress 管理栏偏移修复 */
@media screen and (min-width: 783px) { body.admin-bar #navbar { top: 32px; } }
@media screen and (max-width: 782px) { body.admin-bar #navbar { top: 46px; } }
html { margin-top: 0 !important; }

/* FAQ 图标旋转 */
.faq-toggle .fa-angle-down { transition: transform 0.3s ease; }

/* FAQ 折叠动画 - grid 方案 */
.faq-item .faq-content {
    display: grid;
    grid-template-rows: 1fr;
    transition: grid-template-rows 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: grid-template-rows;
}
.faq-item .faq-content > div { overflow: hidden; }
.faq-item .faq-content.faq-collapsed { grid-template-rows: 0fr; }
.faq-item .faq-toggle {
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}
.faq-item .faq-toggle i {
    transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}
.faq-item .faq-toggle i.rotate-180 { transform: rotate(180deg); }

/* 表单消息 */
.form-message { padding: 0.75rem 1rem; border-radius: 0.5rem; font-size: 0.875rem; font-weight: 500; text-align: center; }
.form-message.success { background-color: #f0fdf4; border: 1px solid #bbf7d0; color: #16a34a; }
.form-message.error { background-color: #fef2f2; border: 1px solid #fecaca; color: #dc2626; }
.form-message.hidden { display: none; }

/* 表单提交按钮加载状态 */
#quoteForm button[type="submit"].loading { opacity: 0.7; pointer-events: none; }
#quoteForm button[type="submit"].loading::after {
    content: ''; display: inline-block; width: 1rem; height: 1rem; margin-left: 0.5rem;
    border: 2px solid transparent; border-top-color: white; border-radius: 50%;
    animation: spin 0.6s linear infinite; vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* SVG 工作原理图响应式 */
.working-svg { max-width: 100%; height: auto; }
@media (min-width: 1024px) { .working-svg { height: 320px; } }

/* 底部页脚补充 */
footer a { display: inline-block; }
footer .fa { width: 1.25rem; text-align: center; }

/* 打印样式 */
@media print {
    .floating-contact, #mobileMask, #mobileMenuPanel, #backTop, #navbar { display: none !important; }
    body { background: white !important; color: black !important; }
}

/* 产品列表页样式 */
#category-filter-bar::-webkit-scrollbar { height: 0; }
#category-filter-bar { scrollbar-width: none; }
.group:hover .group-hover\:opacity-100 { transition-delay: 0.05s; }

/* 分页导航 */
.nav-links { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; justify-content: center; }
.nav-links .page-numbers {
    display: flex; align-items: center; justify-content: center; min-width: 2.5rem; height: 2.5rem;
    padding: 0 0.75rem; border-radius: 0.5rem; font-size: 0.875rem; font-weight: 500;
    color: #4b5563; background: #f4f7fa; transition: all 0.2s ease; text-decoration: none;
}
.nav-links .page-numbers.current { background: #0057b8; color: #fff; box-shadow: 0 4px 12px rgba(0,87,184,0.3); }
.nav-links .page-numbers:hover:not(.current):not(.dots) { background: #e5e7eb; color: #0057b8; }
.nav-links .page-numbers.dots { background: transparent; cursor: default; }
.nav-links .page-numbers.next, .nav-links .page-numbers.prev { padding: 0 1rem; font-size: 0.8rem; }

/* 产品详情页图片切换 */
#product-main-image { transition: opacity 0.3s ease; }

/* 文章正文排版 */
.article-content { color: #4b5563; font-size: 16px; line-height: 1.85; }
.article-content h1 { font-size: 32px; color: #222831; font-weight: 700; margin: 2rem 0 1rem; }
.article-content h2 { font-size: 26px; color: #222831; font-weight: 700; margin: 2.5rem 0 1rem; padding-bottom: 0.75rem; border-bottom: 2px solid #f3f4f6; }
.article-content h3 { font-size: 21px; color: #222831; font-weight: 700; margin: 2rem 0 0.75rem; padding-left: 1rem; border-left: 3px solid #0057b8; }
.article-content h4 { font-size: 18px; color: #222831; font-weight: 700; margin: 1.5rem 0 0.5rem; }
.article-content h5 { font-size: 16px; color: #222831; font-weight: 600; margin: 1.25rem 0 0.5rem; }
.article-content h6 { font-size: 15px; color: #222831; font-weight: 600; margin: 1rem 0 0.5rem; }
.article-content p { margin: 0 0 1.25rem; }
.article-content a { color: #0057b8; text-decoration: none; transition: color 0.2s; }
.article-content a:hover { color: #0091ff; text-decoration: underline; }
.article-content strong { color: #222831; }
.article-content img { border-radius: 0.75rem; box-shadow: 0 4px 12px rgba(0,0,0,0.08); max-width: 100%; height: auto; margin: 1.5rem 0; }
.article-content figure { margin: 1.5rem 0; }
.article-content figcaption { text-align: center; font-size: 14px; color: #9ca3af; margin-top: 0.5rem; }
.article-content ul, .article-content ol { margin: 1rem 0 1.25rem; padding-left: 1.5rem; }
.article-content li { margin: 0.4rem 0; padding-left: 0.25rem; }
.article-content ul li::marker { color: #0057b8; }
.article-content blockquote {
    border-left: 4px solid #0057b8; background: #fffbeb; border-radius: 0 0.75rem 0.75rem 0;
    padding: 1.25rem 1.5rem; margin: 1.5rem 0; font-style: normal; color: #4b5563; font-size: 15px; line-height: 1.8;
}
.article-content code { background: #f3f4f6; color: #0057b8; padding: 0.15rem 0.5rem; border-radius: 0.375rem; font-size: 0.9em; }
.article-content pre { background: #1e293b; color: #e2e8f0; padding: 1.25rem 1.5rem; border-radius: 0.75rem; overflow-x: auto; margin: 1.5rem 0; line-height: 1.7; }
.article-content pre code { background: none; color: inherit; padding: 0; }
.article-content table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; border-radius: 0.75rem; overflow: hidden; font-size: 14px; }
.article-content thead { background: rgba(0,87,184,0.06); }
.article-content th { padding: 0.75rem 1rem; text-align: left; font-weight: 600; color: #222831; border-bottom: 1px solid #e5e7eb; }
.article-content td { padding: 0.75rem 1rem; border-bottom: 1px solid #f3f4f6; color: #4b5563; }
.article-content tbody tr:hover { background: #f9fafb; }
.article-content hr { border: 0; border-top: 1px solid #e5e7eb; margin: 2.5rem 0; }
.article-content .wp-block-button__link { border-radius: 9999px; font-weight: 500; padding: 0.75rem 1.5rem; transition: all 0.2s; text-decoration: none; }

.single-product table { width: 100%; border-collapse: collapse; }
.single-product table td { padding: 0.75rem 1rem; }
.single-product .prose h3 { color: #222831; font-size: 1.1rem; font-weight: 700; margin: 1.5rem 0 0.75rem; }
.single-product .prose ul { list-style: none; padding-left: 0; }
.single-product .prose ul li { padding: 0.35rem 0; padding-left: 1.5rem; position: relative; color: #4b5563; }
.single-product .prose ul li::before {
    content: '\f00c'; font-family: FontAwesome; position: absolute; left: 0; color: #0057b8; font-size: 0.85em;
}
.single-product .page-links { display: flex; gap: 0.5rem; margin-top: 2rem; justify-content: center; }
.single-product .page-links .post-page-numbers { padding: 0.5rem 1rem; background: #f4f7fa; border-radius: 0.5rem; font-weight: 500; }
.single-product .page-links .post-page-numbers.current { background: #0057b8; color: white; }
@media (max-width: 767px) { .single-product h1 { font-size: 1.5rem; } }

/* 无障碍焦点 */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid #0057b8; outline-offset: 2px;
}

/* 工厂证书轮播 */
.scrollbar-hide::-webkit-scrollbar { display: none; width: 0; height: 0; }
.scrollbar-hide { -ms-overflow-style: none; scrollbar-width: none; }
.factory-cert-track { cursor: grab; user-select: none; -webkit-user-select: none; -webkit-overflow-scrolling: touch; }
.factory-cert-track:active { cursor: grabbing; }
.factory-cert-slide { transition: transform 0.3s ease, z-index 0s 0.3s; }
.factory-cert-slide img { transition: transform 0.35s ease, filter 0.3s ease; }
.factory-cert-slide:hover { z-index: 20; }
.factory-cert-slide:hover img { transform: scale(1.15); filter: drop-shadow(0 4px 12px rgba(0,0,0,0.18)); }
.factory-cert-prev, .factory-cert-next { transition: opacity 0.3s ease, background-color 0.2s ease; }
@media (max-width: 479px) { .factory-cert-slide { width: 100% !important; } }
@media (min-width: 480px) and (max-width: 639px) { .factory-cert-slide { width: 50% !important; } }
@media (min-width: 640px) and (max-width: 899px) { .factory-cert-slide { width: 25% !important; } }
@media (min-width: 900px) { .factory-cert-slide { width: 12.5% !important; } }

/* 分类归档页 */
.category-description { line-height: 1.7; color: #d1d5db; }
.category-description p + p { margin-top: 0.5rem; }
#category-filter-bar { transition: box-shadow 0.3s ease; }
#category-filter-bar.scrolled { box-shadow: 0 2px 16px rgba(0,0,0,0.08); }
.category-sub-card { transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease; }
.category-sub-card:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(0,87,184,0.1); }

/* FAQ accordion */
details summary { user-select: none; }
details summary::-webkit-details-marker { display: none; }
details summary::marker { display: none; content: ''; }
details .fa-chevron-down { transition: transform 0.25s ease; }
details[open] .fa-chevron-down { transform: rotate(180deg); }
@media (min-width: 1024px) { .category-sidebar-sticky { position: sticky; top: 5rem; } }
@media (max-width: 639px) { .category-description { font-size: 0.8125rem; } }

/* 合作伙伴 Logo */
.client-logo-img { filter: grayscale(100%); opacity: 0.7; transition: all 0.35s ease; }
.client-logo-card:hover .client-logo-img { filter: grayscale(0%); opacity: 1; }
.client-logo-card { min-height: 80px; transition: box-shadow 0.3s ease, transform 0.25s ease, border-color 0.3s ease; }
.client-logo-card:hover { transform: translateY(-2px); }

/* 动态粒子 Banner */
.dynamic-banner {
    position: relative; width: 100%; max-width: 100vw;
    height: clamp(360px, 50vw, 100dvh); overflow: hidden; cursor: crosshair; background-color: #0a0f1a;
}
.tower-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; z-index: 0; pointer-events: none; }
.dynamic-banner canvas, #particleCanvas { display: block; position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; }
.dynamic-banner-content { position: absolute; z-index: 10; top: 50%; left: 8%; transform: translateY(-50%); color: #fff; pointer-events: none; max-width: 80vw; }
.dynamic-banner-content h1 {
    font-size: clamp(1.8rem, 4.5vw, 4rem); font-weight: 700; margin-bottom: 0.5rem; line-height: 1.15;
    text-shadow: 0 0 40px rgba(0,160,255,0.6); animation: fadeInUp 1.2s ease-out;
}
.dynamic-banner-subtitle {
    font-size: clamp(0.8rem, 1.8vw, 1.4rem); font-weight: 300; opacity: 0.9; margin-bottom: 2rem;
    letter-spacing: 0.15em; animation: fadeInUp 1.5s ease-out;
}
.dynamic-banner-btn {
    display: inline-block; pointer-events: auto; padding: clamp(0.5rem, 1vw, 0.7rem) clamp(1.5rem, 3vw, 2.2rem);
    border: 1px solid rgba(255,255,255,0.5); border-radius: 4px; color: #fff; text-decoration: none;
    font-weight: 500; font-size: clamp(0.8rem, 1vw, 1rem); letter-spacing: 0.1em;
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); background: rgba(255,255,255,0.1);
    transition: all 0.3s; animation: fadeInUp 1.8s ease-out; cursor: pointer;
}
.dynamic-banner-btn:hover { background: rgba(255,255,255,0.25); border-color: #fff; box-shadow: 0 0 30px rgba(0,160,255,0.5); color: #fff; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

.banner-overlay { position: absolute; bottom: 0; left: 0; width: 100%; height: 30%; background: linear-gradient(to top, rgba(10,15,26,0.85), transparent); z-index: 5; pointer-events: none; }
.nozzle-glow {
    position: absolute; top: 3%; left: 50%; transform: translateX(-50%); width: 24px; height: 24px;
    background: radial-gradient(circle, rgba(255,255,255,0.95) 0%, rgba(80,180,255,0.7) 50%, transparent 80%);
    border-radius: 50%; z-index: 6; pointer-events: none; box-shadow: 0 0 30px rgba(0,180,255,0.9);
    animation: nozzlePulse 2s infinite;
}
@keyframes nozzlePulse {
    0% { box-shadow: 0 0 25px rgba(0,180,255,0.7); }
    50% { box-shadow: 0 0 55px rgba(0,210,255,1); }
    100% { box-shadow: 0 0 25px rgba(0,180,255,0.7); }
}

@media (max-width: 480px) {
    .dynamic-banner-content { left: 5%; max-width: 90vw; }
    .dynamic-banner-content h1 { font-size: clamp(1.4rem, 6.5vw, 1.8rem); text-shadow: 0 0 20px rgba(0,160,255,0.5); margin-bottom: 0.35rem; }
    .dynamic-banner-subtitle { font-size: clamp(0.7rem, 3.2vw, 0.85rem); letter-spacing: 0.06em; margin-bottom: 1.2rem; }
    .dynamic-banner-btn { padding: 0.45rem 1.3rem; font-size: 0.78rem; letter-spacing: 0.06em; }
    .nozzle-glow { width: 14px; height: 14px; box-shadow: 0 0 18px rgba(0,180,255,0.6); }
    .banner-overlay { height: 25%; }
}
@media (min-width: 481px) and (max-width: 768px) {
    .dynamic-banner-content { left: 6%; max-width: 85vw; }
    .dynamic-banner-content h1 { font-size: clamp(1.7rem, 6vw, 2.2rem); }
    .dynamic-banner-subtitle { font-size: clamp(0.8rem, 2.5vw, 0.95rem); letter-spacing: 0.1em; margin-bottom: 1.6rem; }
    .dynamic-banner-btn { padding: 0.55rem 1.6rem; font-size: 0.88rem; }
    .nozzle-glow { width: 18px; height: 18px; }
}
@media (min-width: 769px) and (max-width: 1024px) {
    .dynamic-banner-content { left: 7%; max-width: 75vw; }
    .dynamic-banner-content h1 { font-size: clamp(2rem, 4vw, 3rem); }
    .dynamic-banner-subtitle { font-size: clamp(0.9rem, 1.6vw, 1.2rem); }
    .dynamic-banner-btn { padding: 0.6rem 1.8rem; }
    .nozzle-glow { width: 21px; height: 21px; }
}
@media (min-width: 1600px) {
    .dynamic-banner-content { left: 10%; max-width: 70vw; }
    .dynamic-banner-content h1 { font-size: clamp(3rem, 4vw, 5rem); }
    .dynamic-banner-subtitle { font-size: clamp(1.1rem, 1.5vw, 1.6rem); margin-bottom: 2.5rem; }
    .dynamic-banner-btn { padding: 0.85rem 2.6rem; font-size: 1.05rem; }
    .nozzle-glow { width: 30px; height: 30px; box-shadow: 0 0 40px rgba(0,180,255,0.9); }
}

/* ============================================================
 * 验证码组件样式
 * ============================================================ */
.captcha-row {
    display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap;
}
.captcha-input-group {
    flex: 1; min-width: 100px;
}
.captcha-label {
    display: block; font-size: 0.75rem; font-weight: 500; color: #6b7280; margin-bottom: 0.25rem;
}
.captcha-input {
    width: 100%; border: 1px solid #d1d5db; border-radius: 0.5rem; padding: 0.65rem 0.75rem;
    font-size: 1rem; font-weight: 700; text-align: center; letter-spacing: 0.15em;
    outline: none; transition: border-color 0.2s, box-shadow 0.2s;
}
.captcha-input:focus {
    border-color: #0057b8; box-shadow: 0 0 0 3px rgba(0,87,184,0.1);
}
.captcha-image-wrap {
    display: flex; align-items: center; gap: 0.35rem; flex-shrink: 0;
}
.captcha-img {
    height: 42px; width: auto; min-width: 100px; max-width: 160px;
    border: 1px solid #e5e7eb; border-radius: 0.5rem; background: #f9fafb;
    cursor: pointer; object-fit: contain;
    transition: opacity 0.3s ease, filter 0.3s ease;
}
.captcha-refresh {
    display: flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; border: 1px solid #d1d5db; border-radius: 0.5rem;
    background: #fff; color: #6b7280; cursor: pointer; font-size: 0.875rem;
    transition: all 0.2s; flex-shrink: 0;
}
.captcha-refresh:hover {
    background: #0057b8; color: #fff; border-color: #0057b8;
}
.captcha-img.loading,.captcha-img.captcha-loading {
    opacity: 0.45; filter: blur(1px); pointer-events: none;
    animation: captcha-pulse 0.8s ease-in-out infinite;
}
@keyframes captcha-pulse {
    0%,100%{opacity:.45}50%{opacity:.7}
}
@media (max-width: 480px) {
    .captcha-row { flex-direction: column; align-items: stretch; }
    .captcha-image-wrap { justify-content: center; }
    .captcha-input { font-size: 0.9rem; padding: 0.55rem 0.5rem; }
}