/* ============================================================
   style.css — 全网担保网(中国) · 品牌形象型一页式官网
   设计基调：权威 · 信任 · 品质
   品牌色：主色 #1A3C6E | 辅色 #C9A96E | 强调色 #E8491D
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
    --color-primary: #1A3C6E;
    --color-primary-dark: #0F2A4A;
    --color-primary-light: #2A5A8F;
    --color-secondary: #C9A96E;
    --color-secondary-light: #DECAA6;
    --color-secondary-dark: #B8944A;
    --color-accent: #E8491D;
    --color-accent-hover: #D13A10;
    --color-white: #FFFFFF;
    --color-off-white: #F8F7F4;
    --color-gray-100: #F0EFEC;
    --color-gray-200: #E0DED9;
    --color-gray-300: #C5C2BC;
    --color-gray-500: #8A8680;
    --color-gray-700: #4A4742;
    --color-gray-900: #1F1D1A;
    --color-text: #2C2A27;
    --color-text-light: #5A5650;

    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

    --radius-card: 12px;
    --radius-btn: 6px;
    --shadow-card: 0 8px 30px rgba(26, 60, 110, 0.08);
    --shadow-card-hover: 0 16px 48px rgba(26, 60, 110, 0.15);
    --shadow-btn: 0 4px 16px rgba(232, 73, 29, 0.30);
    --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);

    --max-width: 1200px;
    --section-padding: 5rem 1.5rem;
    --card-gap: 2rem;

    --h1-size: 2.5rem;
    --h2-size: 2rem;
    --h3-size: 1.5rem;
    --p-size: 1rem;
}

/* ---------- 重置 & 基础 ---------- */
*,
*::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-stack);
    font-weight: 400;
    font-size: var(--p-size);
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-white);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-primary);
    margin-bottom: 0.5em;
}

h1 {
    font-size: var(--h1-size);
}
h2 {
    font-size: var(--h2-size);
}
h3 {
    font-size: var(--h3-size);
}
p {
    font-size: var(--p-size);
    color: var(--color-text-light);
    margin-bottom: 1rem;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-smooth);
}
a:hover {
    color: var(--color-secondary);
}

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

ul,
ol {
    list-style: none;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: var(--section-padding);
}
.section--light {
    background-color: var(--color-off-white);
}
.section--white {
    background-color: var(--color-white);
}
.section--primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}
.section--primary h2,
.section--primary h3,
.section--primary p {
    color: var(--color-white);
}
.section--primary .section-subtitle {
    color: var(--color-secondary-light);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 680px;
    margin: 0 auto 2.5rem auto;
    text-align: center;
}
.section--primary .section-subtitle {
    color: var(--color-secondary-light);
}

.text-center {
    text-align: center;
}
.text-gold {
    color: var(--color-secondary);
}
.text-accent {
    color: var(--color-accent);
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 2rem;
    font-family: var(--font-stack);
    font-weight: 700;
    font-size: 1rem;
    line-height: 1.4;
    border: none;
    border-radius: var(--radius-btn);
    cursor: pointer;
    transition: all var(--transition-smooth);
    text-align: center;
    min-width: 160px;
}

.btn--primary {
    background-color: var(--color-accent);
    color: var(--color-white);
    box-shadow: var(--shadow-btn);
}
.btn--primary:hover {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
    color: var(--color-white);
    box-shadow: 0 8px 32px rgba(232, 73, 29, 0.45);
    transform: scale(1.05);
}

.btn--secondary {
    background-color: var(--color-secondary);
    color: var(--color-white);
    box-shadow: 0 4px 16px rgba(201, 169, 110, 0.30);
}
.btn--secondary:hover {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-dark));
    color: var(--color-white);
    box-shadow: 0 8px 32px rgba(201, 169, 110, 0.45);
    transform: scale(1.05);
}

.btn--outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}
.btn--outline:hover {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 8px 32px rgba(26, 60, 110, 0.30);
    transform: scale(1.05);
}

.btn--outline-light {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}
.btn--outline-light:hover {
    background: var(--color-white);
    color: var(--color-primary);
    box-shadow: 0 8px 32px rgba(255, 255, 255, 0.30);
    transform: scale(1.05);
}

.btn--gold {
    background-color: var(--color-secondary);
    color: var(--color-white);
    box-shadow: 0 4px 16px rgba(201, 169, 110, 0.30);
}
.btn--gold:hover {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-dark));
    color: var(--color-white);
    box-shadow: 0 8px 32px rgba(201, 169, 110, 0.45);
    transform: scale(1.05);
}

.btn--block {
    width: 100%;
    justify-content: center;
}

/* ---------- 导航栏 ---------- */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(26, 60, 110, 0.06);
    padding: 0 1.5rem;
    height: 72px;
    display: flex;
    align-items: center;
    transition: box-shadow 0.3s ease;
}
.navbar.scrolled {
    box-shadow: 0 4px 24px rgba(26, 60, 110, 0.08);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0;
}

/* Logo */
.navbar-logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-shrink: 0;
}
.navbar-logo .logo-shield {
    display: inline-block;
    font-size: 1.6rem;
    line-height: 1;
    color: var(--color-secondary);
}
.navbar-logo .logo-text {
    color: var(--color-primary);
}
.navbar-logo .logo-text-gold {
    color: var(--color-secondary);
}

/* 导航菜单 */
.navbar-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin: 0;
}
.navbar-menu a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
    position: relative;
    padding: 0.25rem 0;
    transition: color var(--transition-smooth);
}
.navbar-menu a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-secondary);
    transition: width var(--transition-smooth);
}
.navbar-menu a:hover {
    color: var(--color-primary);
}
.navbar-menu a:hover::after {
    width: 100%;
}
.navbar-menu a.active {
    color: var(--color-primary);
}
.navbar-menu a.active::after {
    width: 100%;
}

.navbar-cta {
    flex-shrink: 0;
}
.navbar-cta .btn {
    min-width: auto;
    padding: 0.5rem 1.25rem;
    font-size: 0.9rem;
}

/* 汉堡按钮 */
.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background 0.2s;
}
.navbar-toggle:hover {
    background: rgba(26, 60, 110, 0.06);
}
.navbar-toggle span {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: center;
}
.navbar-toggle.active span:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
}
.navbar-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.navbar-toggle.active span:nth-child(3) {
    transform: translateY(-7.5px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    min-height: 88vh;
    display: flex;
    align-items: center;
    padding: 6rem 1.5rem 4rem;
    background-color: var(--color-primary-dark);
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('/images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
            rgba(15, 42, 74, 0.88) 0%,
            rgba(26, 60, 110, 0.78) 60%,
            rgba(26, 60, 110, 0.70) 100%);
    z-index: 1;
}
.hero .container {
    position: relative;
    z-index: 2;
    max-width: 820px;
    margin: 0 auto;
    padding: 0;
}
.hero-badge {
    display: inline-block;
    background: rgba(201, 169, 110, 0.20);
    color: var(--color-secondary);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    border: 1px solid rgba(201, 169, 110, 0.25);
    margin-bottom: 1.5rem;
}
.hero h1 {
    font-size: clamp(2.2rem, 6vw, 3.6rem);
    color: var(--color-white);
    margin-bottom: 0.4em;
    line-height: 1.15;
    letter-spacing: -0.02em;
}
.hero h1 .highlight {
    color: var(--color-secondary);
}
.hero p {
    font-size: clamp(1rem, 1.4vw, 1.25rem);
    color: rgba(255, 255, 255, 0.80);
    max-width: 600px;
    margin-bottom: 2rem;
    line-height: 1.7;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
}
.hero-actions .btn {
    min-width: 180px;
}
.hero-trust {
    margin-top: 2.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem 2.5rem;
    align-items: center;
}
.hero-trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.70);
    font-size: 0.9rem;
}
.hero-trust-item .icon {
    font-size: 1.2rem;
}
.hero-trust-item strong {
    color: var(--color-white);
    font-weight: 600;
}

/* ---------- 痛点 Pain Points ---------- */
.pain-points .grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--card-gap);
    margin-top: 0.5rem;
}
.pain-card {
    background: var(--color-white);
    padding: 2rem 1.5rem;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    border-top: 4px solid var(--color-accent);
    transition: all var(--transition-smooth);
    text-align: center;
}
.pain-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}
.pain-card .icon {
    font-size: 2.8rem;
    display: block;
    margin-bottom: 1rem;
}
.pain-card h3 {
    font-size: 1.1rem;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}
.pain-card p {
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* ---------- 解决方案 Solutions ---------- */
.solutions .grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--card-gap);
    margin-top: 0.5rem;
}
.solution-card {
    background: var(--color-white);
    padding: 2rem 1.75rem;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(26, 60, 110, 0.06);
    transition: all var(--transition-smooth);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-secondary), var(--color-primary));
    opacity: 0;
    transition: opacity var(--transition-smooth);
}
.solution-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-6px);
}
.solution-card:hover::before {
    opacity: 1;
}
.solution-card .icon {
    font-size: 2.8rem;
    display: block;
    margin-bottom: 1rem;
}
.solution-card h3 {
    font-size: 1.2rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}
.solution-card p {
    font-size: 0.95rem;
    margin-bottom: 0;
}
.solution-card .badge {
    display: inline-block;
    margin-top: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-secondary);
    background: rgba(201, 169, 110, 0.12);
    padding: 0.2rem 0.8rem;
    border-radius: 50px;
}

/* ---------- 信任背书 Social Proof ---------- */
.testimonials .grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--card-gap);
    margin-top: 0.5rem;
}
.testimonial-card {
    background: var(--color-white);
    padding: 2rem 1.75rem;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-smooth);
    border: 1px solid rgba(26, 60, 110, 0.04);
}
.testimonial-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}
.testimonial-card .quote {
    font-size: 1rem;
    color: var(--color-text);
    font-style: italic;
    line-height: 1.6;
    margin-bottom: 1.25rem;
    position: relative;
    padding-left: 1.2rem;
    border-left: 3px solid var(--color-secondary);
}
.testimonial-card .author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.testimonial-card .avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-gray-200);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-primary);
    background: rgba(26, 60, 110, 0.08);
}
.testimonial-card .author-info {
    display: flex;
    flex-direction: column;
}
.testimonial-card .author-name {
    font-weight: 700;
    color: var(--color-primary);
    font-size: 0.95rem;
}
.testimonial-card .author-title {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* 数据徽章 */
.stats-badge {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
    padding: 2rem 1.5rem;
    background: var(--color-white);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(201, 169, 110, 0.15);
}
.stat-item {
    text-align: center;
}
.stat-item .number {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.1;
}
.stat-item .number .gold {
    color: var(--color-secondary);
}
.stat-item .label {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: 0.15rem;
}

/* ---------- 关于我们 About ---------- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
    margin-top: 0.5rem;
}
.about-content h3 {
    color: var(--color-primary);
    margin-top: 1.25rem;
    margin-bottom: 0.25rem;
}
.about-content h3:first-of-type {
    margin-top: 0;
}
.about-content p {
    margin-bottom: 0.75rem;
}

.about-info {
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(26, 60, 110, 0.06);
}
.about-info .info-item {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-gray-100);
}
.about-info .info-item:last-child {
    border-bottom: none;
}
.about-info .info-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
    margin-top: 0.1rem;
}
.about-info .info-label {
    font-weight: 600;
    color: var(--color-primary);
    font-size: 0.9rem;
}
.about-info .info-value {
    color: var(--color-text-light);
    font-size: 0.95rem;
}
.about-info .info-value a {
    color: var(--color-primary);
}
.about-info .info-value a:hover {
    color: var(--color-secondary);
}

.about-image {
    margin-top: 1.5rem;
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}
.about-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* ---------- 常见问题 FAQ ---------- */
.faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.faq-item {
    background: var(--color-white);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(26, 60, 110, 0.05);
    overflow: hidden;
    transition: all var(--transition-smooth);
}
.faq-item:hover {
    box-shadow: var(--shadow-card-hover);
}
.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.75rem;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--color-primary);
    list-style: none;
    transition: background 0.2s;
    gap: 1rem;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary:hover {
    background: rgba(26, 60, 110, 0.02);
}
.faq-item summary .icon {
    font-size: 1.2rem;
    color: var(--color-secondary);
    flex-shrink: 0;
    transition: transform 0.3s ease;
}
.faq-item[open] summary .icon {
    transform: rotate(45deg);
}
.faq-item .answer {
    padding: 0 1.75rem 1.5rem 1.75rem;
    color: var(--color-text-light);
    line-height: 1.7;
    font-size: 0.98rem;
}
.faq-item .answer p {
    margin-bottom: 0;
}

/* ---------- 最终 CTA ---------- */
.final-cta {
    background: var(--color-primary);
    position: relative;
    overflow: hidden;
}
.final-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(201, 169, 110, 0.06) 0%, transparent 70%);
    pointer-events: none;
}
.final-cta .container {
    position: relative;
    z-index: 1;
}
.final-cta h2 {
    color: var(--color-white);
}
.final-cta .section-subtitle {
    color: rgba(255, 255, 255, 0.70);
}

.cta-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2.5rem;
    margin-top: 1rem;
    align-items: start;
}

/* 表单 */
.cta-form {
    background: var(--color-white);
    padding: 2.25rem 2rem;
    border-radius: var(--radius-card);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.15);
}
.cta-form .form-group {
    margin-bottom: 1.25rem;
}
.cta-form label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-primary);
    margin-bottom: 0.3rem;
}
.cta-form input,
.cta-form textarea {
    width: 100%;
    padding: 0.7rem 1rem;
    font-family: var(--font-stack);
    font-size: 1rem;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-btn);
    transition: border-color var(--transition-smooth), box-shadow var(--transition-smooth);
    background: var(--color-off-white);
    color: var(--color-text);
}
.cta-form input:focus,
.cta-form textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 4px rgba(201, 169, 110, 0.15);
    background: var(--color-white);
}
.cta-form textarea {
    min-height: 100px;
    resize: vertical;
}
.cta-form .btn {
    margin-top: 0.5rem;
    width: 100%;
}

/* 联系方式卡片 */
.cta-contact {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(4px);
    padding: 2rem 2rem;
    border-radius: var(--radius-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.cta-contact h3 {
    color: var(--color-white);
    font-size: 1.2rem;
    margin-bottom: 1.25rem;
}
.cta-contact .contact-item {
    display: flex;
    gap: 0.75rem;
    padding: 0.6rem 0;
    color: rgba(255, 255, 255, 0.80);
    font-size: 0.95rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.cta-contact .contact-item:last-child {
    border-bottom: none;
}
.cta-contact .contact-item .icon {
    font-size: 1.2rem;
    flex-shrink: 0;
    margin-top: 0.05rem;
}
.cta-contact .contact-item strong {
    color: var(--color-white);
}
.cta-contact .contact-item a {
    color: var(--color-secondary);
}
.cta-contact .contact-item a:hover {
    color: var(--color-white);
}
.cta-contact .contact-note {
    margin-top: 1.25rem;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.50);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 1.25rem;
}

/* ---------- 页尾 Footer ---------- */
.footer {
    background: var(--color-primary-dark);
    padding: 2.5rem 1.5rem 2rem;
    border-top: 2px solid rgba(201, 169, 110, 0.15);
}
.footer .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
}
.footer-copy {
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.9rem;
}
.footer-copy a {
    color: var(--color-secondary);
}
.footer-copy a:hover {
    color: var(--color-white);
}
.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}
.footer-links a {
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.9rem;
    transition: color var(--transition-smooth);
}
.footer-links a:hover {
    color: var(--color-secondary);
}
.footer .beian {
    color: rgba(255, 255, 255, 0.40);
    font-size: 0.8rem;
}
.footer .beian a {
    color: rgba(255, 255, 255, 0.40);
}
.footer .beian a:hover {
    color: var(--color-secondary);
}

/* ============================================================
   响应式设计 — 移动优先 (断点 768px)
   ============================================================ */

/* ---------- 768px 及以上 (平板/桌面) ---------- */
@media (min-width: 768px) {
    :root {
        --section-padding: 6rem 2rem;
    }

    .navbar {
        padding: 0 2rem;
    }

    .hero {
        min-height: 80vh;
        padding: 8rem 2rem 5rem;
    }
    .hero h1 {
        font-size: 3.2rem;
    }

    .pain-points .grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .solutions .grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .testimonials .grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .stats-badge {
        grid-template-columns: repeat(4, 1fr);
        padding: 2.5rem 2rem;
    }

    .about-grid {
        grid-template-columns: 1fr 1fr;
        gap: 3.5rem;
    }

    .cta-grid {
        grid-template-columns: 1.2fr 0.8fr;
        gap: 3rem;
    }

    .footer .container {
        flex-direction: row;
    }
}

/* ---------- 1024px 及以上 (大桌面) ---------- */
@media (min-width: 1024px) {
    :root {
        --section-padding: 7rem 2rem;
    }

    .hero {
        min-height: 78vh;
        padding: 9rem 2rem 6rem;
    }
    .hero h1 {
        font-size: 4rem;
    }

    .container {
        padding: 0 2rem;
    }
}

/* ---------- 768px 以下 (手机) ---------- */
@media (max-width: 767px) {
    /* 导航栏汉堡菜单 */
    .navbar-menu {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        padding: 1.5rem 2rem 2rem;
        gap: 1.25rem;
        border-bottom: 1px solid rgba(26, 60, 110, 0.06);
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.06);
        transform: translateY(-120%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        z-index: 999;
        align-items: stretch;
        text-align: center;
    }
    .navbar-menu.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .navbar-menu a {
        font-size: 1.05rem;
        padding: 0.5rem 0;
        width: 100%;
        border-bottom: 1px solid rgba(26, 60, 110, 0.04);
    }
    .navbar-menu a:last-child {
        border-bottom: none;
    }
    .navbar-menu a::after {
        display: none;
    }
    .navbar-cta {
        display: none;
    }
    .navbar-cta--mobile {
        display: flex !important;
        margin-top: 0.5rem;
    }
    .navbar-cta--mobile .btn {
        width: 100%;
        justify-content: center;
        min-width: auto;
    }

    .navbar-toggle {
        display: flex;
    }

    /* 移动端显示移动CTA */
    .navbar-cta--mobile {
        display: flex !important;
    }

    /* Hero */
    .hero {
        min-height: 70vh;
        padding: 5rem 1.5rem 3rem;
        text-align: center;
    }
    .hero p {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-actions {
        justify-content: center;
    }
    .hero-trust {
        justify-content: center;
    }

    /* 关于 */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    /* CTA */
    .cta-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .cta-form {
        padding: 1.75rem 1.5rem;
    }
    .cta-contact {
        padding: 1.75rem 1.5rem;
    }

    /* 页尾 */
    .footer .container {
        flex-direction: column;
        text-align: center;
    }
    .footer-links {
        justify-content: center;
    }

    /* 统计徽章 */
    .stats-badge {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    .stat-item .number {
        font-size: 2rem;
    }

    /* 区块标题 */
    h1 {
        font-size: 2.2rem;
    }
    h2 {
        font-size: 1.75rem;
    }
    h3 {
        font-size: 1.3rem;
    }

    /* 卡片间距 */
    .pain-points .grid,
    .solutions .grid,
    .testimonials .grid {
        gap: 1.25rem;
    }
}

/* 当菜单打开时禁止 body 滚动 (由 JS 控制) */
body.no-scroll {
    overflow: hidden;
}

/* ---------- 辅助类 ---------- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* 图片占位样式 (用于 trust-badge / office) */
.img-placeholder {
    background: var(--color-gray-100);
    border-radius: var(--radius-card);
    overflow: hidden;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-500);
    font-size: 0.9rem;
}
.img-placeholder img {
    width: 100%;
    height: auto;
    display: block;
}

/* 徽标中的金色装饰 */
.gold-accent {
    color: var(--color-secondary);
}
.border-gold {
    border-color: var(--color-secondary);
}

/* ---------- 打印样式 ---------- */
@media print {
    .navbar {
        position: static;
        box-shadow: none;
    }
    .hero {
        min-height: auto;
        padding: 2rem 0;
        background: var(--color-primary);
    }
    .hero-overlay {
        display: none;
    }
    .hero-bg {
        display: none;
    }
    .btn {
        box-shadow: none !important;
        transform: none !important;
    }
    .section {
        padding: 2rem 0;
    }
    .navbar-toggle,
    .navbar-cta--mobile {
        display: none !important;
    }
    .navbar-menu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        flex-direction: row;
        background: transparent;
        box-shadow: none;
        padding: 0;
        gap: 1.5rem;
    }
    .navbar-menu a {
        color: var(--color-white) !important;
        border-bottom: none !important;
    }
    .navbar-menu a::after {
        display: none !important;
    }
    .navbar-logo {
        color: var(--color-white);
    }
    .navbar-logo .logo-text {
        color: var(--color-white);
    }
    .faq-item[open] summary .icon {
        transform: none;
    }
    .faq-item summary .icon {
        display: none;
    }
}