/* ============================================================
   今智善馨 官网样式 — 今智善馨信息技术（上海）有限公司
   设计理念：专业、克制、内容驱动
   ============================================================ */

/* ---- CSS 变量 ---- */
:root {
    --color-primary: #0a1628;
    --color-primary-light: #132240;
    --color-accent: #c9a84c;
    --color-accent-light: #e8d08a;
    --color-accent-dark: #a88a30;
    --color-bg: #ffffff;
    --color-bg-alt: #f7f8fa;
    --color-bg-dark: #0a1628;
    --color-text: #2c3e50;
    --color-text-light: #5a6c7d;
    --color-text-muted: #7a8a9b;
    --color-border: #e8ecf2;
    --color-border-light: #edf2f7;
    --color-success: #38a169;
    --color-danger: #e53e3e;

    --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06), 0 2px 6px rgba(0,0,0,0.04);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 48px rgba(0,0,0,0.12);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --max-width: 1200px;
    --nav-height: 72px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.75;
    color: var(--color-text);
    background: var(--color-bg);
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ---- Container ---- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- 导航 ---- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    background: rgba(10, 22, 40, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transition: all 0.3s ease;
}
.nav.scrolled {
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-brand {
    display: flex;
    align-items: center;
    font-weight: 700;
}
.nav-logo-img {
    display: block;
    height: 36px;
    width: auto;
}
.nav-slogan {
    margin-left: 14px;
    padding-left: 14px;
    border-left: 1px solid rgba(255,255,255,0.2);
    font-size: 13px;
    font-weight: 400;
    color: rgba(255,255,255,0.7);
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: rgba(255,255,255,0.75);
    position: relative;
    padding: 4px 0;
    transition: color 0.2s;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-accent);
    transform: scaleX(0);
    transition: transform 0.2s;
}
.nav-link:hover { color: #fff; }
.nav-link:hover::after { transform: scaleX(1); }
.nav-cta {
    color: var(--color-accent) !important;
    font-weight: 600;
}
.nav-cta::after { display: none; }
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.3s;
}

/* ---- 按钮 ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font-sans);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.25s;
    border: none;
}
.btn-primary {
    background: var(--color-accent);
    color: var(--color-primary);
}
.btn-primary:hover {
    background: var(--color-accent-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}
.btn-outline {
    background: transparent;
    color: rgba(255,255,255,0.7);
    border: 1.5px solid rgba(255,255,255,0.2);
}
.btn-outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}
.btn-full { width: 100%; }

/* ---- Section 通用 ---- */
section {
    padding: 100px 0;
}
.section-title {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    text-align: center;
    line-height: 1.3;
    margin-bottom: 16px;
}
.section-subtitle {
    font-size: 17px;
    color: rgba(255,255,255,0.6);
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
    line-height: 1.7;
}
/* ==================== Hero ==================== */
.hero {
    padding: 160px 0 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: var(--color-bg-dark);
}
.hero-bg {
    display: none;
}
.hero-tagline {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-accent-light);
    letter-spacing: 1px;
    margin-bottom: 16px;
}
.hero-title {
    font-size: 52px;
    font-weight: 900;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -1px;
}
.hero-subtitle {
    font-size: 19px;
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
    max-width: 560px;
    margin: 0 auto 40px;
}
.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 64px;
}
.hero-cta .btn-outline {
    color: rgba(255,255,255,0.75);
    border-color: rgba(255,255,255,0.25);
}
.hero-cta .btn-outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 64px;
}
.hero-stat {
    text-align: center;
}
.hero-stat-num {
    display: block;
    font-size: 40px;
    font-weight: 900;
    color: #fff;
    line-height: 1;
}
.hero-stat-label {
    display: block;
    font-size: 14px;
    color: rgba(255,255,255,0.5);
    margin-top: 6px;
}
.text-accent { color: var(--color-accent); }

/* ==================== 十大核心缺口 ==================== */
.pain {
    background: var(--color-bg-dark);
}
.pain .section-title { color: #fff; }
.pain .section-subtitle { color: rgba(255,255,255,0.6); }

.gaps-diagnostic {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1px;
    background: rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.gap-item {
    background: rgba(255,255,255,0.03);
    padding: 32px 28px;
    transition: background 0.25s;
}
.gap-item:hover {
    background: rgba(255,255,255,0.07);
}
.gap-idx {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.6;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 12px;
}
.gap-text h3 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 6px;
}
.gap-text p {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    line-height: 1.6;
}

/* ==================== 产品线 ==================== */
.products {
    background: var(--color-bg-dark);
}
.products .section-title { color: #fff; }
.products .section-subtitle { color: rgba(255,255,255,0.6); }

/* 产品线标签导航 */
.product-tabs-wrapper {
    position: relative;
    margin-bottom: 48px;
}
.product-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}
.product-tab {
    padding: 10px 22px;
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-sans);
    background: rgba(255,255,255,0.06);
    border: 1.5px solid rgba(255,255,255,0.1);
    border-radius: 100px;
    color: rgba(255,255,255,0.7);
    cursor: pointer;
    transition: all 0.2s;
}
.product-tab:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}
.product-tab.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg-dark);
}

/* 轮播进度条 */
.product-carousel-progress {
    width: 100%;
    height: 2px;
    background: rgba(255,255,255,0.06);
    border-radius: 1px;
    overflow: hidden;
    margin-top: 16px;
}
.product-carousel-progress::before {
    content: '';
    display: block;
    height: 100%;
    width: 0%;
    background: var(--color-accent);
    border-radius: 1px;
}
.product-carousel-progress.running::before {
    animation: carouselProgress 5s linear forwards;
}
.product-carousel-progress.paused::before {
    animation-play-state: paused;
}

@keyframes carouselProgress {
    from { width: 0%; }
    to { width: 100%; }
}

/* 产品线详情 */
.product-detail {
    display: none;
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255,255,255,0.08);
    overflow: hidden;
}
.product-detail.active { display: block; }

.product-header {
    padding: 48px 48px 32px;
    background: var(--color-primary);
    color: #fff;
}
.product-badge {
    display: inline-block;
    padding: 4px 14px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}
.badge-open,
.badge-probe,
.badge-retain { background: rgba(201, 168, 76, 0.25); color: var(--color-accent-light); }
.badge-full { background: rgba(255, 255, 255, 0.2); color: #fff; }
.badge-transform { background: rgba(72, 187, 120, 0.25); color: #9ae6b4; }
.badge-depth { background: rgba(99, 179, 237, 0.25); color: #90cdf4; }
.badge-upward { background: rgba(183, 148, 244, 0.25); color: #d6bcfa; }

.product-header h3 {
    font-size: 32px;
    font-weight: 900;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}
.product-tagline {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.75);
}

.product-body {
    padding: 40px 48px 48px;
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 40px;
}
.product-meta {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.meta-item {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    padding: 12px 16px;
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255,255,255,0.08);
}
.meta-item strong {
    display: block;
    font-size: 22px;
    color: #fff;
    margin-bottom: 2px;
}
.product-desc h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-top: 20px;
    margin-bottom: 8px;
}
.product-desc h4:first-child { margin-top: 0; }
.product-desc p {
    font-size: 15px;
    color: rgba(255,255,255,0.65);
    line-height: 1.7;
    margin-bottom: 12px;
}
.product-desc ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.product-desc ul li {
    font-size: 14px;
    color: rgba(255,255,255,0.75);
    padding: 10px 16px;
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-accent);
    line-height: 1.6;
}
.product-desc ul li strong {
    color: var(--color-accent);
}

/* ==================== 方法论 做→思→验 ==================== */
.method {
    background: var(--color-bg-dark);
}
.method .section-title { color: #fff; }
.method .section-subtitle { color: rgba(255,255,255,0.6); }
.method-loop {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}
.method-step {
    flex: 1;
    max-width: 300px;
    padding: 40px 28px;
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.08);
    text-align: center;
    transition: all 0.3s;
}
.method-step:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.4);
    border-color: rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.06);
}
.step-char {
    display: inline-block;
    width: 56px;
    height: 56px;
    line-height: 56px;
    font-size: 28px;
    font-weight: 900;
    color: var(--color-bg-dark);
    background: var(--color-accent);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}
.method-step h4 {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}
.method-step p {
    font-size: 14px;
    color: rgba(255,255,255,0.65);
    line-height: 1.7;
}
.method-arrow {
    flex-shrink: 0;
    color: var(--color-accent);
    opacity: 0.4;
}

/* ==================== 行业覆盖 ==================== */
.industries {
    background: var(--color-bg-dark);
}
.industries .section-title { color: #fff; }
.industries .section-subtitle { color: rgba(255,255,255,0.6); }
.industry-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 36px;
}
.industry-card {
    padding: 40px 32px;
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.08);
    transition: all 0.3s;
}
.industry-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.4);
    border-color: rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.06);
}
.industry-icon {
    font-size: 36px;
    margin-bottom: 16px;
}
.industry-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}
.industry-card p {
    font-size: 14px;
    color: rgba(255,255,255,0.65);
    line-height: 1.7;
    margin-bottom: 16px;
}
.industry-lines {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.industry-lines span {
    padding: 4px 12px;
    background: var(--color-accent);
    color: var(--color-bg-dark);
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
}
.cross-industry {
    display: flex;
    align-items: center;
    gap: 24px;
    max-width: 640px;
    margin: 0 auto;
    padding: 28px 36px;
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius-lg);
    border: 1.5px dashed rgba(255,255,255,0.12);
}
.cross-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    white-space: nowrap;
    flex-shrink: 0;
}
.cross-content h4 {
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}
.cross-content p {
    font-size: 14px;
    color: rgba(255,255,255,0.65);
}

/* ==================== 信任 ==================== */
.trust {
    background: var(--color-bg-dark);
}
.trust .section-title { color: #fff; }
.trust .section-subtitle { color: rgba(255,255,255,0.6); }
.trust-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.trust-card {
    padding: 36px;
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.08);
    transition: all 0.3s;
}
.trust-card:hover {
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.12);
}
.trust-card h3 {
    font-size: 19px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
    padding-left: 16px;
    border-left: 3px solid var(--color-accent);
}
.trust-card p {
    font-size: 15px;
    color: rgba(255,255,255,0.65);
    line-height: 1.7;
}

/* ==================== 关于 ==================== */
.about {
    background: var(--color-bg-dark);
}
.about .section-title { color: #fff; }
.about .section-subtitle { color: rgba(255,255,255,0.6); }
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    max-width: 960px;
    margin: 0 auto;
}
.about-text h3 {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 8px;
}
.about-brand {
    font-size: 15px;
    color: var(--color-accent);
    margin-bottom: 20px;
    font-weight: 500;
}
.about-brand strong {
    font-weight: 700;
    color: var(--color-accent-light);
}
.about-text p {
    font-size: 15px;
    color: rgba(255,255,255,0.65);
    line-height: 1.8;
    margin-bottom: 14px;
}
.about-values {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.value-item {
    padding: 20px 24px;
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255,255,255,0.08);
}
.value-item h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}
.value-item p {
    font-size: 14px;
    color: rgba(255,255,255,0.55);
}

/* ==================== 联系 ==================== */
.contact {
    background: var(--color-bg-dark);
}
.contact .section-title { color: #fff; }
.contact .section-subtitle { color: rgba(255,255,255,0.6); }
.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    max-width: 960px;
    margin: 0 auto;
    align-items: start;
}
.contact-form {
    background: rgba(255,255,255,0.04);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.08);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.form-group.full-width { grid-column: 1 / -1; }
.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: rgba(255,255,255,0.8);
}
.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    font-size: 15px;
    font-family: var(--font-sans);
    border: 1.5px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.06);
    color: #fff;
    transition: all 0.2s;
    outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255,255,255,0.3);
}

/* 下拉框：统一暗色主题 + 自定义箭头 */
.form-group select {
    appearance: none;
    -webkit-appearance: none;
    color-scheme: dark;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23c9a84c' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
    cursor: pointer;
}
.form-group select option {
    background: #1a253a;
    color: #fff;
    padding: 8px 12px;
}
.form-group select option:hover,
.form-group select option:focus {
    background: var(--color-accent);
    color: #0a1628;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    background: rgba(255,255,255,0.08);
    box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.1);
}
.form-group textarea { resize: vertical; min-height: 100px; }

/* 表单消息 */
.form-message {
    grid-column: 1 / -1;
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    line-height: 1.6;
}
.form-message-success {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}
.form-message-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.contact-info {
    padding: 40px 36px;
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    color: #fff;
}
.contact-info h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 28px;
}
.info-item {
    margin-bottom: 16px;
}
.info-item strong {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 2px;
}
.info-item p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.85);
}
.contact-note {
    margin-top: 24px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

/* ==================== Footer ==================== */
.footer {
    background: var(--color-bg-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 28px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}
.footer-logo-img {
    display: block;
    height: 32px;
    width: auto;
    margin-bottom: 12px;
}
.footer-icp {
    margin-top: 8px;
    font-size: 12px !important;
    color: rgba(255, 255, 255, 0.4) !important;
}
.footer-icp a {
    color: inherit;
    text-decoration: none;
}
.footer-icp a:hover {
    color: rgba(255, 255, 255, 0.6);
}
.footer-links h4 {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}
.footer-links a {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 8px;
    transition: color 0.2s;
}
.footer-links a:hover { color: var(--color-accent-light); }
.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
}

/* ==================== 手机响应 ==================== */
@media (max-width: 1024px) {
    .product-body {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .product-meta {
        flex-direction: row;
        flex-wrap: wrap;
    }
    .meta-item { flex: 1; min-width: 120px; }

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

@media (max-width: 768px) {
    section { padding: 64px 0; }
    .hero { padding: 120px 0 80px; }
    .hero-tagline { font-size: 13px; }
    .hero-title { font-size: 34px; }
    .hero-subtitle { font-size: 17px; }
    .hero-stats { gap: 32px; }
    .hero-stat-num { font-size: 30px; }
    .hero-stat-label { font-size: 12px; }
    .section-title { font-size: 28px; }

    .nav-links { display: none; }
    .nav-slogan { display: none; }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--color-bg-dark);
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
        box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    }
    .nav-toggle { display: flex; }

    .gaps-diagnostic { grid-template-columns: 1fr; }
    .method-loop { flex-direction: column; gap: 0; }
    .method-step { max-width: 100%; }
    .method-arrow { transform: rotate(90deg); margin: 4px 0; }
    .industry-grid { grid-template-columns: 1fr; }
    .trust-grid { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }

    .product-header { padding: 32px 24px 24px; }
    .product-body { padding: 24px; }
    .contact-form { padding: 24px; grid-template-columns: 1fr; }
    .product-tabs { gap: 6px; }
    .product-tab { padding: 8px 16px; font-size: 13px; }
    .hero-cta { flex-direction: column; align-items: center; }
    .btn { padding: 12px 28px; font-size: 14px; }

    .cross-industry {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }
}