/* ==========================================================================
   responsive.css - 响应式适配
   ========================================================================== */

/* === 大屏 (≤1440px) === */
@media (max-width: 1440px) {
    .container { padding: 0 24px; }
    .section { padding: 76px 0; }
    .hero { padding: 104px 0 48px; }
    .visual-card { width: 280px; }
}

/* === 中屏 (≤1200px) === */
@media (max-width: 1200px) {
    .hero-title { font-size: clamp(36px, 5vw, 60px); }
    .hero-inner { gap: 40px; }
    .hero-visual { height: 460px; }
    .visual-card { width: 240px; }

    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .service-large { grid-column: span 2; }
    .service-cta { grid-column: 1 / -1; max-width: 760px; }

    .cases-grid { grid-template-columns: repeat(2, 1fr); }

    .process-grid { grid-template-columns: repeat(5, 1fr); }
    .process-arrow:nth-child(even) { display: none; }
}

/* === 平板 (≤1024px) === */
@media (max-width: 1024px) {
    .nav-list { gap: 4px; padding: 4px; }
    .nav-link { padding: 8px 14px; font-size: 13px; }

    .hero-inner { grid-template-columns: 1fr; }
    .hero-visual {
        height: 400px;
        order: 2;
        max-width: 600px;
        margin: 28px auto 0;
    }
    .hero-content { text-align: center; }
    .hero-subtitle { margin-left: auto; margin-right: auto; }
    .hero-cta { justify-content: center; }
    .hero-stats {
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }

    .about-grid { grid-template-columns: repeat(2, 1fr); }

    .contact-wrap { grid-template-columns: 1fr; gap: 40px; }
    .contact-info { padding-right: 0; }

    .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
    .footer-brand { grid-column: span 2; }
}

/* === 小平板 (≤900px) === */
@media (max-width: 900px) {
    .cursor, .cursor-follower { display: none; }

    .nav {
        position: fixed;
        top: 70px; left: 0; right: 0;
        background: rgba(5, 7, 13, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-top: 1px solid var(--border);
        padding: 24px;
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
        z-index: 99;
    }
    .nav.open { transform: translateX(0); }
    .nav-list {
        flex-direction: column;
        background: transparent;
        border: 0;
        padding: 0;
        border-radius: 0;
        gap: 4px;
        align-items: stretch;
    }
    .nav-link {
        padding: 14px 20px;
        font-size: 16px;
        text-align: left;
        border-radius: 10px;
    }
    .nav-link.active { background: rgba(124, 58, 237, 0.15); }
    .menu-toggle { display: flex; }

    .section { padding: 62px 0; }
    .section-head { margin-bottom: 32px; }

    .process-grid { grid-template-columns: repeat(3, 1fr); }
    .tech-body { grid-template-columns: 1fr; }
    .process-arrow { display: none !important; }

    .tech-cta {
        flex-direction: column;
        text-align: center;
        padding: 32px 28px;
    }
}

/* === 手机大屏 (≤768px) === */
@media (max-width: 768px) {
    .container { padding: 0 20px; }

    .header-inner { gap: 16px; }
    .logo-cn { font-size: 15px; }
    .logo-en { font-size: 9px; }
    .logo-mark svg { width: 30px; height: 30px; }

    .hero { padding: 86px 0 32px; min-height: auto; }
    .hero-title { font-size: 38px; margin-bottom: 20px; }
    .title-en { display: block; margin-left: 0; margin-top: 4px; }
    .hero-subtitle { font-size: 15px; }
    .hero-cta {
        flex-direction: column;
        gap: 12px;
    }
    .hero-cta .btn { width: 100%; justify-content: center; }
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 20px 0;
    }
    .stat-num { font-size: 28px; }

    .hero-visual { height: 360px; margin-top: 24px; }
    .visual-card { width: 220px; padding: 12px; }
    .card-1 { left: 10px; }
    .card-2 { right: 0; top: 60px; }
    .card-3 { left: 40px; }
    .ss-logo { font-size: 22px; }
    .ss-temp-num { font-size: 36px; }
    .ss-ceramic-title { font-size: 18px; }
    .ss-ceramic-title br { display: block; }

    .hero-scroll { display: none; }

    .section-title { font-size: clamp(28px, 7vw, 40px); }
    .section-eyebrow { font-size: 12px; }
    .section-desc { font-size: 15px; }

    .about-grid { grid-template-columns: 1fr; }
    .about-card { padding: 24px; }
    .about-philosophy { padding: 40px 24px; }
    .philosophy-quote p { font-size: 18px; }
    .quote-mark { font-size: 80px; top: -20px; left: -10px; }

    .services-grid { grid-template-columns: 1fr; }
    .service-large { grid-column: span 1; }
    .service-cta { grid-column: span 1; max-width: 760px; }

    .ceramic-grid { grid-template-columns: 1fr; gap: 40px; }
    .ceramic-showcase { order: -1; }

    .tech-cloud { padding: 20px 16px; }
    .service-card { padding: 28px 24px; }
    .service-large h3 { font-size: 26px; }
    .service-stat-row { gap: 20px; }
    .ss-num { font-size: 22px; }

    .cases-grid { grid-template-columns: 1fr; }
    .case-info { padding: 20px 22px 24px; }
    .case-info h3 { font-size: 18px; }

    .process-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .process-step { padding: 20px 12px; }
    .process-step h3 { font-size: 14px; }
    .process-step p { font-size: 11px; }
    .step-num { font-size: 24px; }

    .tech-body { gap: 24px; }
    .tech-cta { align-items: flex-start; text-align: left; gap: 24px; }

    .faq-item summary { padding: 20px; font-size: 15px; }
    .faq-body { padding: 0 20px 20px; font-size: 14px; }

    .contact-form { padding: 28px 20px; }
    .form-row { grid-template-columns: 1fr; gap: 12px; margin-bottom: 0; }
    .form-field { margin-bottom: 14px; }

    .footer-top { grid-template-columns: 1fr; }
    .footer-brand { grid-column: span 1; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

    .preloader-logo { font-size: 36px; }
    .preloader-bar { width: 180px; }
}

/* === 手机小屏 (≤480px) === */
@media (max-width: 480px) {
    .container { padding: 0 16px; }

    .hero-title { font-size: 32px; }
    .hero-stats { gap: 14px; }
    .stat-num { font-size: 24px; }
    .stat-plus { font-size: 18px; }
    .stat-label { font-size: 11px; }

    .ceramic-flow { margin: 24px 0; gap: 14px; }
    .ceramic-case { padding: 20px; }
    .ceramic-stage { height: 200px; gap: 10px; }
    .ceramic-vase { width: 44px; }
    .ceramic-vase.cv2 { width: 52px; }

    .hero-visual { height: 320px; }
    .visual-card { width: 180px; padding: 10px; }
    .card-title { font-size: 10px; }
    .ss-logo { font-size: 18px; }
    .ss-tagline { font-size: 7px; }
    .ss-temp-num { font-size: 28px; }
    .ss-bars { height: 30px; }
    .ss-charge-icon { width: 24px; height: 24px; }
    .ss-charge-num { font-size: 14px; }
    .ss-charge-lbl { font-size: 8px; }
    .ss-quants-title { font-size: 10px; }
    .ss-quants-price { font-size: 12px; }
    .ss-geo-logo { font-size: 12px; }
    .ss-geo-badge { font-size: 7px; }

    .section { padding: 48px 0; }
    .section-head { margin-bottom: 32px; }

    .about-card { padding: 20px; }
    .about-philosophy { padding: 32px 20px; }

    .service-card { padding: 24px 20px; }
    .service-card h3 { font-size: 20px; }
    .service-large h3 { font-size: 24px; }
    .service-icon { width: 48px; height: 48px; flex: 0 0 48px; }
    .service-icon svg { width: 24px; height: 24px; }
    .service-head { gap: 12px; }

    .process-grid { grid-template-columns: 1fr; }
    .process-step { display: flex; align-items: center; gap: 16px; text-align: left; padding: 16px 20px; }
    .process-step h3 { margin-bottom: 4px; }
    .process-step > div { flex: 1; }
    .step-num { margin-bottom: 0; font-size: 20px; }

    .tech-cta-text h3 { font-size: 20px; }

    .qr-block { flex-direction: column; text-align: center; }

    .tech-cloud { padding: 16px 12px; }

    .btn { padding: 14px 24px; font-size: 14px; }

    .float-actions { right: 14px; bottom: 14px; gap: 10px; }
    .float-btn { width: 50px; height: 50px; }
    .float-btn svg { width: 24px; height: 24px; }
    .float-qq-text { font-size: 16px; }
    .float-pop { right: 62px; width: 208px; padding: 16px; }
    .float-pop.float-pop-qr { width: 230px; }
    .float-qr-img { max-width: 180px; }
}

/* === 横屏手机 === */
@media (max-height: 500px) and (orientation: landscape) {
    .hero { min-height: auto; padding: 100px 0 40px; }
    .hero-inner { grid-template-columns: 1.2fr 0.8fr; }
    .hero-visual { height: 300px; }
    .visual-card { width: 200px; }
}

/* === 减少动效偏好 === */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .reveal-up, .reveal-fade, .reveal-left, .reveal-right {
        opacity: 1;
        transform: none;
    }
}

/* === 打印样式 === */
@media print {
    .header, .hero-scroll, .particle-canvas, .grid-bg, .orb,
    .cursor, .cursor-follower, .footer, .preloader {
        display: none !important;
    }
    body { background: #fff; color: #000; }
    .section { padding: 20px 0; }
    .hero { padding-top: 40px; min-height: auto; }
}