/* /skin/css/css.css */
:root {
    --tttf-red: #c41e3a;
    --tttf-red-hover: #a0182f;
    --tttf-red-light: #fef5f6;
    --tttf-black: #1a1a1a;
    --tttf-gray-900: #2d2d2d;
    --tttf-gray-700: #555;
    --tttf-gray-500: #888;
    --tttf-gray-300: #c5c5c5;
    --tttf-gray-100: #f4f4f4;
    --tttf-gray-50: #fafafa;
    --tttf-white: #fff;
    --tttf-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --tttf-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --tttf-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
    --tttf-radius: 6px;
    --tttf-radius-lg: 12px;
    --tttf-transition: 0.22s cubic-bezier(0.33, 1, 0.68, 1);
    --tttf-transition-fast: 0.14s cubic-bezier(0.33, 1, 0.68, 1);
    --tttf-max-width: 1260px;
    --tttf-header-height: 60px;
}

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--tttf-header-height);
    -webkit-text-size-adjust: 100%;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--tttf-gray-900);
    background-color: var(--tttf-white);
    background-image: radial-gradient(circle, #e8e8e8 0.5px, transparent 0.5px);
    background-size: 28px 28px;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--tttf-transition-fast);
}

a:hover {
    color: var(--tttf-red);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font: inherit;
    color: inherit;
}

em {
    font-style: normal;
    font-weight: 700;
    font-size: 1.35em;
    color: var(--tttf-red);
}

.tttf-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    height: var(--tttf-header-height);
    display: flex;
    align-items: center;
}

.tttf-header-wrap {
    width: 100%;
    max-width: var(--tttf-max-width);
    margin: 0 auto;
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.tttf-logo-link {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.tttf-logo-img {
    height: 36px;
    width: auto;
}

.tttf-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.tttf-nav-list {
    display: flex;
    gap: 6px;
    align-items: center;
}

.tttf-nav-link {
    display: block;
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--tttf-gray-700);
    border-radius: var(--tttf-radius);
    transition: color var(--tttf-transition-fast), background var(--tttf-transition-fast);
    white-space: nowrap;
}

.tttf-nav-link:hover,
.tttf-nav-link.tttf-active {
    color: var(--tttf-red);
    background: var(--tttf-red-light);
}

.tttf-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.tttf-search-btn {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--tttf-gray-700);
    transition: background var(--tttf-transition-fast);
}

.tttf-search-btn:hover {
    background: var(--tttf-gray-100);
    color: var(--tttf-red);
}

.tttf-header-tel {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--tttf-red);
    padding: 6px 14px;
    border: 1.5px solid var(--tttf-red);
    border-radius: 20px;
    transition: all var(--tttf-transition-fast);
    white-space: nowrap;
}

.tttf-header-tel:hover {
    background: var(--tttf-red);
    color: #fff;
}

.tttf-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    width: 40px;
    height: 36px;
    justify-content: center;
    align-items: center;
    border-radius: var(--tttf-radius);
}

.tttf-menu-bar {
    width: 22px;
    height: 2px;
    background: var(--tttf-gray-900);
    border-radius: 2px;
    transition: all var(--tttf-transition-fast);
    transform-origin: center;
}

.tttf-menu-toggle[aria-expanded="true"] .tttf-menu-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.tttf-menu-toggle[aria-expanded="true"] .tttf-menu-bar:nth-child(2) {
    opacity: 0;
}

.tttf-menu-toggle[aria-expanded="true"] .tttf-menu-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.tttf-hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 580px;
    max-height: 820px;
    overflow: hidden;
    margin-top: 0;
    background: #1a1a1a;
}

.tttf-hero-slider {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.tttf-hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.6s cubic-bezier(0.33, 1, 0.68, 1);
    z-index: 1;
}

.tttf-hero-slide.tttf-active {
    opacity: 1;
    z-index: 2;
}

.tttf-hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.tttf-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.35) 0%, rgba(0, 0, 0, 0.5) 60%, rgba(0, 0, 0, 0.7) 100%);
    z-index: 3;
}

.tttf-hero-content {
    position: relative;
    z-index: 4;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 40px 28px;
    text-align: center;
}

.tttf-hero-logo-icon {
    width: 160px;
    height: auto;
    margin-bottom: 22px;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.4));
    display: block;
}

.tttf-hero-title {
    font-size: clamp(1.6rem, 3.5vw, 2.6rem);
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.03em;
    margin-bottom: 6px;
    line-height: 1.25;
}

.tttf-hero-subtitle {
    display: block;
    font-size: 0.55em;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.8);
    letter-spacing: 0.05em;
    margin-top: 4px;
}

.tttf-hero-cta-group {
    display: flex;
    gap: 16px;
    margin-top: 24px;
    flex-wrap: wrap;
    justify-content: center;
}

.tttf-hero-dots {
    display: flex;
    gap: 10px;
    margin-top: 28px;
    justify-content: center;
    align-items: center;
}

.tttf-hero-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.45);
    cursor: pointer;
    transition: all var(--tttf-transition-fast);
    border: 2px solid transparent;
}

.tttf-hero-dot.tttf-active {
    background: #fff;
    border-color: var(--tttf-red);
    transform: scale(1.25);
}

/* Buttons */
.tttf-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 13px 30px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--tttf-radius);
    transition: all var(--tttf-transition-fast);
    white-space: nowrap;
    letter-spacing: 0.02em;
    cursor: pointer;
    min-width: 120px;
    min-height: 48px;
}

.tttf-btn-primary {
    background: var(--tttf-red);
    color: #fff;
    border: 2px solid var(--tttf-red);
}

.tttf-btn-primary:hover {
    background: var(--tttf-red-hover);
    border-color: var(--tttf-red-hover);
    color: #fff;
}

.tttf-btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.7);
}

.tttf-btn-outline:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: #fff;
    color: #fff;
}

.tttf-btn-stroke {
    background: transparent;
    color: var(--tttf-gray-900);
    border: 1.5px solid var(--tttf-gray-300);
}

.tttf-btn-stroke:hover {
    border-color: var(--tttf-red);
    color: var(--tttf-red);
}

/* Section */
.tttf-section {
    padding: 70px 28px;
    position: relative;
}

.tttf-section:nth-child(even) {
    background-color: var(--tttf-gray-50);
    background-image: radial-gradient(circle, #e0e0e0 0.5px, transparent 0.5px);
    background-size: 24px 24px;
}

.tttf-section:nth-child(odd) {
    background-color: var(--tttf-white);
}

.tttf-section-inner {
    max-width: var(--tttf-max-width);
    margin: 0 auto;
}

.tttf-section-head {
    margin-bottom: 44px;
    text-align: left;
}

.tttf-section-head--left {
    text-align: left;
}

.tttf-section-tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--tttf-red);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 10px;
    padding: 3px 12px;
    border: 1px solid rgba(196, 30, 58, 0.25);
    border-radius: 20px;
}

.tttf-section-title {
    font-size: clamp(1.5rem, 2.8vw, 2.1rem);
    font-weight: 700;
    color: var(--tttf-black);
    letter-spacing: 0.01em;
    margin-bottom: 8px;
}

.tttf-section-desc {
    font-size: 0.95rem;
    color: var(--tttf-gray-500);
    max-width: 600px;
}

/* Services Grid */
.tttf-services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.tttf-service-card {
    background: var(--tttf-white);
    border-radius: var(--tttf-radius-lg);
    overflow: hidden;
    box-shadow: var(--tttf-shadow-sm);
    transition: box-shadow var(--tttf-transition), transform var(--tttf-transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.tttf-service-card:hover {
    box-shadow: var(--tttf-shadow-md);
    transform: translateY(-3px);
}

.tttf-service-card-img-wrap {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--tttf-gray-100);
}

.tttf-service-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s cubic-bezier(0.33, 1, 0.68, 1);
}

.tttf-service-card:hover .tttf-service-card-img {
    transform: scale(1.04);
}

.tttf-service-card-body {
    padding: 18px 16px 16px;
}

.tttf-service-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--tttf-black);
    margin-bottom: 6px;
}

.tttf-service-card-desc {
    font-size: 0.82rem;
    color: var(--tttf-gray-500);
    margin-bottom: 10px;
    line-height: 1.5;
}

.tttf-service-card-price {
    font-size: 0.85rem;
    color: var(--tttf-gray-700);
    font-weight: 500;
}

/* Products */
.tttf-products-layout {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.tttf-products-block {
    background: var(--tttf-white);
    padding: 26px 28px;
    border-radius: var(--tttf-radius-lg);
    border-left: 3px solid var(--tttf-red);
    box-shadow: var(--tttf-shadow-sm);
    transition: box-shadow var(--tttf-transition);
}

.tttf-products-block:hover {
    box-shadow: var(--tttf-shadow-md);
}

.tttf-products-block-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--tttf-black);
    margin-bottom: 8px;
}

.tttf-products-block-text {
    font-size: 0.88rem;
    color: var(--tttf-gray-700);
    line-height: 1.7;
}

/* Advantages */
.tttf-advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.tttf-advantage-item {
    background: var(--tttf-white);
    padding: 24px 20px;
    border-radius: var(--tttf-radius-lg);
    display: flex;
    align-items: flex-start;
    gap: 16px;
    box-shadow: var(--tttf-shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: box-shadow var(--tttf-transition);
}

.tttf-advantage-item:hover {
    box-shadow: var(--tttf-shadow-md);
}

.tttf-advantage-num {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--tttf-red-light);
    color: var(--tttf-red);
    font-weight: 700;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tttf-advantage-num--sm {
    font-size: 0.8rem;
}

.tttf-advantage-info strong {
    display: block;
    font-size: 0.95rem;
    color: var(--tttf-black);
    margin-bottom: 4px;
}

.tttf-advantage-info p {
    font-size: 0.8rem;
    color: var(--tttf-gray-500);
    line-height: 1.5;
}

/* Process */
.tttf-process-steps {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}

.tttf-process-step {
    background: var(--tttf-white);
    padding: 24px 18px;
    border-radius: var(--tttf-radius-lg);
    text-align: left;
    box-shadow: var(--tttf-shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.04);
    position: relative;
    transition: box-shadow var(--tttf-transition), border-color var(--tttf-transition);
}

.tttf-process-step:hover {
    box-shadow: var(--tttf-shadow-md);
    border-color: rgba(196, 30, 58, 0.2);
}

.tttf-process-step-num {
    display: block;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--tttf-red);
    margin-bottom: 8px;
    letter-spacing: 0.02em;
}

.tttf-process-step-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--tttf-black);
    margin-bottom: 6px;
}

.tttf-process-step p {
    font-size: 0.8rem;
    color: var(--tttf-gray-500);
    line-height: 1.5;
}

/* News */
.tttf-news-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.tttf-news-card {
    background: var(--tttf-white);
    border-radius: var(--tttf-radius-lg);
    overflow: hidden;
    box-shadow: var(--tttf-shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: box-shadow var(--tttf-transition), transform var(--tttf-transition);
}

.tttf-news-card:hover {
    box-shadow: var(--tttf-shadow-md);
    transform: translateY(-2px);
}

.tttf-news-card-img-wrap {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--tttf-gray-100);
}

.tttf-news-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s cubic-bezier(0.33, 1, 0.68, 1);
}

.tttf-news-card:hover .tttf-news-card-img {
    transform: scale(1.04);
}

.tttf-news-card-body {
    padding: 16px;
}

.tttf-news-date {
    font-size: 0.75rem;
    color: var(--tttf-gray-500);
    display: block;
    margin-bottom: 6px;
}

.tttf-news-title {
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1.45;
    margin-bottom: 6px;
}

.tttf-news-title a {
    color: var(--tttf-black);
}

.tttf-news-title a:hover {
    color: var(--tttf-red);
}

.tttf-news-excerpt {
    font-size: 0.78rem;
    color: var(--tttf-gray-500);
    line-height: 1.5;
}

.tttf-news-more-wrap {
    margin-top: 32px;
    text-align: left;
}

/* Contact */
.tttf-contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
}

.tttf-contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.tttf-contact-item {
    background: var(--tttf-white);
    padding: 18px 20px;
    border-radius: var(--tttf-radius);
    box-shadow: var(--tttf-shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.tttf-contact-label {
    display: block;
    font-size: 0.75rem;
    color: var(--tttf-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 4px;
}

.tttf-contact-val {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--tttf-black);
    word-break: break-all;
}

a.tttf-contact-val:hover {
    color: var(--tttf-red);
}

.tttf-contact-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
}

/* Footer */
.tttf-footer {
    background: #1a1a1a;
    color: #bbb;
    padding: 50px 28px 28px;
}

.tttf-footer-inner {
    max-width: var(--tttf-max-width);
    margin: 0 auto;
}

.tttf-footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-bottom: 36px;
}

.tttf-footer-heading {
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
    letter-spacing: 0.03em;
}

.tttf-footer-list li {
    margin-bottom: 8px;
}

.tttf-footer-list a {
    font-size: 0.82rem;
    color: #999;
    transition: color var(--tttf-transition-fast);
}

.tttf-footer-list a:hover {
    color: #fff;
}

.tttf-footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 22px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.tttf-footer-social {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.tttf-footer-social-label {
    font-size: 0.8rem;
    color: #888;
}

.tttf-footer-social-link {
    font-size: 0.8rem;
    color: #bbb;
    padding: 4px 10px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 14px;
    transition: all var(--tttf-transition-fast);
}

.tttf-footer-social-link:hover {
    color: #fff;
    border-color: #fff;
}

.tttf-footer-legal {
    font-size: 0.75rem;
    color: #777;
    line-height: 1.8;
}

.tttf-footer-legal a {
    color: #999;
}

.tttf-footer-legal a:hover {
    color: #fff;
}

/* Back to Top */
.tttf-back-top {
    position: fixed;
    right: 22px;
    bottom: 30px;
    z-index: 900;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--tttf-white);
    box-shadow: var(--tttf-shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--tttf-gray-700);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity var(--tttf-transition), visibility var(--tttf-transition), transform var(--tttf-transition), box-shadow var(--tttf-transition-fast);
    border: 1px solid rgba(0, 0, 0, 0.08);
}

.tttf-back-top.tttf-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.tttf-back-top:hover {
    box-shadow: var(--tttf-shadow-lg);
    color: var(--tttf-red);
}

/* Responsive */
@media (max-width: 1024px) {
    .tttf-services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .tttf-advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .tttf-process-steps {
        grid-template-columns: repeat(3, 1fr);
    }
    .tttf-news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .tttf-products-layout {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .tttf-nav {
        position: fixed;
        top: var(--tttf-header-height);
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.97);
        backdrop-filter: blur(14px);
        -webkit-backdrop-filter: blur(14px);
        padding: 16px 20px;
        flex-direction: column;
        display: none;
        border-bottom: 1px solid rgba(0, 0, 0, 0.08);
        box-shadow: var(--tttf-shadow-md);
    }
    .tttf-nav.tttf-nav-open {
        display: flex;
    }
    .tttf-nav-list {
        flex-direction: column;
        width: 100%;
        gap: 2px;
    }
    .tttf-nav-link {
        padding: 13px 16px;
        font-size: 0.95rem;
        border-radius: var(--tttf-radius);
        width: 100%;
    }
    .tttf-menu-toggle {
        display: flex;
    }
    .tttf-header-tel {
        display: none;
    }
    .tttf-services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    .tttf-advantages-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .tttf-process-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .tttf-news-grid {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }
    .tttf-contact-grid {
        grid-template-columns: 1fr;
    }
    .tttf-contact-info {
        grid-template-columns: 1fr 1fr;
    }
    .tttf-footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 22px;
    }
    .tttf-products-layout {
        grid-template-columns: 1fr;
    }
    .tttf-hero {
        min-height: 500px;
        max-height: 640px;
    }
    .tttf-hero-logo-icon {
        width: 120px;
    }
    .tttf-section {
        padding: 48px 18px;
    }
}

@media (max-width: 480px) {
    .tttf-services-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .tttf-advantages-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .tttf-process-steps {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .tttf-news-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .tttf-contact-info {
        grid-template-columns: 1fr;
    }
    .tttf-footer-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    .tttf-hero-cta-group {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    .tttf-hero-cta-group .tttf-btn {
        width: 100%;
        max-width: 260px;
    }
    .tttf-hero-logo-icon {
        width: 100px;
    }
    .tttf-btn {
        padding: 12px 22px;
        font-size: 0.9rem;
        min-height: 44px;
    }
    .tttf-section {
        padding: 36px 14px;
    }
    .tttf-section-title {
        font-size: 1.3rem;
    }
    .tttf-header-wrap {
        padding: 0 14px;
    }
    .tttf-footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}