/* ============================================================
 * 北京尧图网络科技有限公司 · 高端定制建站官网
 * 全新设计系统 v2.0 —— 亮红 + 深空黑 + 暖白
 * 原创差异化：大留白、悬浮卡片、渐变光晕、超大数字、折叠菜单
 * ============================================================ */

:root {
    --primary-red: #E63946;
    --red-deep: #C6283A;
    --red-light: #FF6B76;
    --deep-black: #131318;
    --black-2: #1C1C24;
    --soft-gray: #F5F6F8;
    --medium-gray: #7A7E8C;
    --light-white: #FFFFFF;
    --line-gray: #E9EAEF;
    --gradient-red: linear-gradient(135deg, #E63946 0%, #C6283A 100%);
    --gradient-dark: linear-gradient(160deg, #1C1C24 0%, #131318 60%, #2A1113 130%);
    --shadow-soft: 0 6px 24px rgba(19, 19, 24, 0.06);
    --shadow-mid: 0 12px 40px rgba(19, 19, 24, 0.10);
    --shadow-bold: 0 18px 60px rgba(230, 57, 70, 0.28);
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: 'PingFang SC', 'Helvetica Neue', 'Microsoft YaHei', Arial, sans-serif;
    background-color: var(--soft-gray);
    color: var(--deep-black);
    line-height: 1.7;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: var(--transition-smooth); }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.container-fluid { width: 100%; }

/* ========== 顶部导航 · 折叠式 ========== */
.header {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    z-index: 1200;
    background: transparent;
    transition: var(--transition-smooth);
    padding: 18px 0;
}

.header.scrolled {
    background: rgba(19, 19, 24, 0.96);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding: 12px 0;
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.35);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1360px;
    margin: 0 auto;
    padding: 0 32px;
    position: relative;
}

.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo img { height: 46px; width: auto; }
.logo-text {
    font-size: 22px;
    font-weight: 800;
    color: var(--light-white);
    letter-spacing: 1px;
    white-space: nowrap;
}

.logo-tag {
    font-size: 11px;
    color: var(--red-light);
    letter-spacing: 2px;
    text-transform: uppercase;
    display: block;
    margin-top: -2px;
}

/* 主导航 */
.nav-menu { display: flex; align-items: center; gap: 4px; }

.nav-item { position: relative; }

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--light-white);
    font-size: 15px;
    font-weight: 500;
    padding: 10px 15px;
    border-radius: 30px;
    opacity: 0.92;
    white-space: nowrap;
    position: relative;
}

.nav-link .caret {
    font-size: 10px;
    transition: transform 0.3s ease;
    opacity: 0.8;
}

.nav-item:hover .caret,
.nav-item.dropdown-open .caret { transform: rotate(180deg); }

.nav-link:hover,
.nav-link.active { opacity: 1; color: var(--red-light); background: rgba(230, 57, 70, 0.12); }

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 40%;
    height: 2px;
    background: var(--red-light);
    transition: var(--transition-smooth);
    border-radius: 2px;
}

.nav-link.active::after { transform: translateX(-50%) scaleX(1); }

/* 折叠菜单容器 */
.dropdown-menu {
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;
    transform: translateX(-50%) translateY(12px);
    background: rgba(28, 28, 36, 0.98);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 18px;
    min-width: 260px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.5);
}

.nav-item:hover > .dropdown-menu,
.nav-item.dropdown-open > .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* 巨型菜单 */
.dropdown-menu.mega {
    min-width: 780px;
    max-width: 880px;
    left: 50%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px 24px;
}

.dropdown-menu.mega .mega-col {
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    padding-right: 20px;
}
.dropdown-menu.mega .mega-col:last-child { border-right: none; }

.dropdown-menu.mega .mega-col:first-child { padding-left: 4px; }

.mega-title {
    font-size: 12px;
    color: var(--red-light);
    letter-spacing: 2px;
    font-weight: 700;
    padding: 6px 12px 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.dropdown-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: 9px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 14px;
    transition: var(--transition-smooth);
}

.dropdown-link:hover {
    background: rgba(230, 57, 70, 0.14);
    color: var(--light-white);
    padding-left: 16px;
}

.dropdown-link .d-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--red-light);
    flex-shrink: 0;
    opacity: 0.7;
}

.dropdown-link:hover .d-dot { opacity: 1; }

.dropdown-foot {
    grid-column: 1 / -1;
    margin-top: 10px;
    padding: 12px 14px;
    background: rgba(230, 57, 70, 0.12);
    border-radius: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.dropdown-foot a { color: var(--red-light); font-weight: 600; font-size: 14px; }
.dropdown-foot a:hover { letter-spacing: 1px; }

/* 紧凑下拉（案例/资讯/关于） */
.dropdown-menu.compact .dropdown-link { justify-content: flex-start; }
.dropdown-menu .dropdown-link { text-align: left; }

/* 导航 CTA */
.nav-cta {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.nav-tel {
    color: var(--light-white);
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0.9;
}
.nav-tel:hover { color: var(--red-light); }

.btn-nav {
    display: inline-block;
    padding: 11px 26px;
    background: var(--gradient-red);
    color: var(--light-white) !important;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 8px 24px rgba(230, 57, 70, 0.35);
    white-space: nowrap;
}
.btn-nav:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(230, 57, 70, 0.5); }

/* 汉堡 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 6px;
    z-index: 1300;
}
.hamburger span { width: 26px; height: 3px; background: var(--light-white); border-radius: 2px; transition: var(--transition-smooth); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

/* ========== 通用按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 36px;
    border-radius: 40px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    line-height: 1.4;
}
.btn-red { background: var(--gradient-red); color: var(--light-white); box-shadow: 0 10px 28px rgba(230, 57, 70, 0.32); }
.btn-red:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(230, 57, 70, 0.46); }
.btn-dark { background: var(--deep-black); color: var(--light-white); }
.btn-dark:hover { transform: translateY(-3px); box-shadow: var(--shadow-mid); }
.btn-outline { background: transparent; color: var(--light-white); border: 2px solid rgba(255, 255, 255, 0.35); }
.btn-outline:hover { border-color: var(--red-light); color: var(--red-light); transform: translateY(-3px); }
.btn-outline-dark { background: transparent; color: var(--deep-black); border: 2px solid var(--deep-black); }
.btn-outline-dark:hover { background: var(--deep-black); color: var(--light-white); transform: translateY(-3px); }
.btn-white { background: var(--light-white); color: var(--deep-black); }
.btn-white:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(255, 255, 255, 0.25); }

.btn-sm { padding: 10px 24px; font-size: 13px; }

/* ========== 英雄区（多款变体，各页面差异化） ========== */
.hero {
    position: relative;
    min-height: 88vh;
    display: flex;
    align-items: center;
    background: var(--gradient-dark);
    color: var(--light-white);
    overflow: hidden;
    padding: 140px 0 100px;
}

.hero-bg {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: 0.30;
    z-index: 0;
}

.hero-bg-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(120deg, rgba(19,19,24,0.92) 0%, rgba(19,19,24,0.62) 45%, rgba(230,57,70,0.25) 100%);
    z-index: 1;
}

.hero-inner {
    position: relative;
    z-index: 2;
    width: 100%;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(230, 57, 70, 0.16);
    border: 1px solid rgba(230, 57, 70, 0.4);
    color: var(--red-light);
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 26px;
}

.hero-title {
    font-size: 60px;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: 1px;
    margin-bottom: 24px;
    max-width: 900px;
}

.hero-title .accent {
    background: linear-gradient(135deg, var(--red-light), var(--primary-red));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.hero-sub {
    font-size: 19px;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.82);
    max-width: 720px;
    margin-bottom: 36px;
    line-height: 1.9;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }

.hero-stats {
    display: flex;
    gap: 44px;
    margin-top: 60px;
    flex-wrap: wrap;
}
.hero-stat .num { font-size: 42px; font-weight: 800; color: var(--light-white); }
.hero-stat .num i { font-style: normal; color: var(--red-light); }
.hero-stat .lab { font-size: 13px; color: rgba(255, 255, 255, 0.6); margin-top: 4px; }

/* 英雄区分屏变体 */
.hero-split .hero-inner { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 50px; align-items: center; }
.hero-visual {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 40px 90px rgba(0,0,0,0.5);
    transform: rotate(1.5deg);
}
.hero-visual img { width: 100%; height: auto; }
.hero-visual::after { content:''; position:absolute; inset:0; border:1px solid rgba(255,255,255,0.15); border-radius:24px; }

/* 英雄区居中变体 */
.hero-center { text-align: center; justify-content: center; }
.hero-center .hero-title, .hero-center .hero-sub { margin-left: auto; margin-right: auto; }
.hero-center .hero-actions { justify-content: center; }
.hero-center .hero-stats { justify-content: center; }

/* ========== 区块 ========== */
.section { padding: 110px 0; position: relative; }
.section-alt { background: var(--light-white); }
.section-gray { background: var(--soft-gray); }
.section-dark { background: var(--deep-black); color: var(--light-white); }
.section-dark-grad { background: var(--gradient-dark); color: var(--light-white); }
.section-red { background: var(--gradient-red); color: var(--light-white); }

.section-header { text-align: center; margin-bottom: 70px; max-width: 800px; margin-left: auto; margin-right: auto; }
.section-header.left { text-align: left; margin-left: 0; margin-right: 0; }

.sec-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--primary-red);
    text-transform: uppercase;
    margin-bottom: 14px;
}
.section-dark .sec-eyebrow, .section-dark-grad .sec-eyebrow { color: var(--red-light); }

.section-title { font-size: 42px; font-weight: 800; line-height: 1.25; margin-bottom: 18px; position: relative; }
.section-title .accent { color: var(--primary-red); }
.section-dark .section-title .accent, .section-dark-grad .section-title .accent { color: var(--red-light); }

.section-title::after {
    content: '';
    display: block;
    width: 64px;
    height: 4px;
    border-radius: 2px;
    background: var(--gradient-red);
    margin-top: 18px;
}
.section-header.center .section-title::after { margin-left: auto; margin-right: auto; }
.section-header.left .section-title::after { margin-left: 0; }

.section-desc { font-size: 17px; color: var(--medium-gray); line-height: 1.9; max-width: 700px; }
.section-header.center .section-desc { margin: 0 auto; }
.section-dark .section-desc, .section-dark-grad .section-desc { color: rgba(255, 255, 255, 0.68); }
.section-red .section-desc { color: rgba(255, 255, 255, 0.85); }

/* ========== 卡片体系 ========== */

/* 服务卡片 */
.svc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 28px; }
.svc-card {
    background: var(--light-white);
    border-radius: var(--radius-lg);
    padding: 38px 32px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.03);
}
.svc-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 5px;
    background: var(--gradient-red);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-smooth);
}
.svc-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-mid); }
.svc-card:hover::before { transform: scaleX(1); }
.svc-icon {
    width: 68px; height: 68px;
    border-radius: 16px;
    background: rgba(230, 57, 70, 0.08);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 22px;
    font-size: 30px;
}
.svc-card .num-tag {
    position: absolute;
    top: 22px; right: 24px;
    font-size: 44px;
    font-weight: 800;
    color: rgba(230, 57, 70, 0.08);
    line-height: 1;
}
.svc-card h3 { font-size: 21px; font-weight: 700; margin-bottom: 12px; }
.svc-card p { font-size: 14.5px; color: var(--medium-gray); line-height: 1.85; margin-bottom: 18px; }
.svc-more { font-size: 14px; color: var(--primary-red); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.svc-more:hover { gap: 10px; }

/* 特性列表 */
.feat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 26px; }
.feat-item {
    display: flex;
    gap: 18px;
    padding: 26px 24px;
    background: var(--light-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    border: 1px solid rgba(0,0,0,0.03);
}
.feat-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-mid); }
.feat-ico {
    width: 52px; height: 52px;
    flex-shrink: 0;
    border-radius: 13px;
    background: var(--gradient-red);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px;
}
.feat-item h4 { font-size: 17px; font-weight: 700; margin-bottom: 7px; }
.feat-item p { font-size: 13.5px; color: var(--medium-gray); line-height: 1.75; }

/* 步骤时间线 */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 26px; counter-reset: step; }
.step-card {
    background: var(--light-white);
    border-radius: var(--radius-lg);
    padding: 34px 28px;
    position: relative;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    border-top: 4px solid transparent;
}
.step-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-mid); border-top-color: var(--primary-red); }
.step-num {
    font-size: 46px;
    font-weight: 800;
    color: rgba(230, 57, 70, 0.14);
    line-height: 1;
    margin-bottom: 16px;
    font-style: italic;
}
.step-card h4 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--medium-gray); line-height: 1.8; }

/* 数字统计 */
.stat-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 30px; text-align: center; }
.stat-item .num { font-size: 56px; font-weight: 800; color: var(--light-white); line-height: 1.1; }
.stat-item .num i { font-style: normal; color: var(--red-light); }
.stat-item .lab { font-size: 15px; color: rgba(255,255,255,0.72); margin-top: 8px; }

/* 案例卡片 */
.case-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 30px; }
.case-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    display: block;
    box-shadow: var(--shadow-soft);
}
.case-card img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition-smooth); }
.case-card:hover img { transform: scale(1.08); }
.case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(19,19,24,0.94) 0%, rgba(19,19,24,0.1) 55%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 30px;
    color: var(--light-white);
    opacity: 0.96;
    transition: var(--transition-smooth);
}
.case-card:hover .case-overlay { padding-bottom: 40px; }
.case-cat { font-size: 12px; color: var(--red-light); font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 8px; }
.case-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.case-card p { font-size: 14px; opacity: 0.85; }

/* 团队卡片 */
.team-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 28px; }
.team-card {
    background: var(--light-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    text-align: center;
}
.team-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-mid); }
.team-photo { aspect-ratio: 1/1.1; overflow: hidden; position: relative; }
.team-photo img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition-smooth); }
.team-card:hover .team-photo img { transform: scale(1.05); }
.team-card h3 { font-size: 20px; font-weight: 700; margin: 20px 0 4px; }
.team-card .role { font-size: 13px; color: var(--primary-red); font-weight: 600; letter-spacing: 1px; }
.team-card .bio { font-size: 13.5px; color: var(--medium-gray); padding: 14px 22px 24px; line-height: 1.8; }

/* 新闻卡片 */
.news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 28px; }
.news-card {
    background: var(--light-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    display: block;
}
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-mid); }
.news-thumb { aspect-ratio: 16/9; overflow: hidden; position: relative; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition-smooth); }
.news-card:hover .news-thumb img { transform: scale(1.07); }
.news-date {
    position: absolute;
    top: 14px; right: 14px;
    background: var(--gradient-red);
    color: #fff;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}
.news-body { padding: 24px; }
.news-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; line-height: 1.5; }
.news-body p { font-size: 14px; color: var(--medium-gray); line-height: 1.8; margin-bottom: 14px; }
.news-more { font-size: 13px; color: var(--primary-red); font-weight: 600; display: flex; align-items: center; gap: 5px; }
.news-more:hover { gap: 9px; }

/* 报价卡片 */
.price-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; align-items: stretch; }
.price-card {
    background: var(--light-white);
    border-radius: var(--radius-lg);
    padding: 40px 34px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    position: relative;
    display: flex;
    flex-direction: column;
}
.price-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-mid); }
.price-card.featured { background: var(--gradient-dark); color: var(--light-white); border: 1px solid rgba(230,57,70,0.5); }
.price-card.featured:hover { transform: translateY(-10px) scale(1.02); }
.price-badge {
    position: absolute;
    top: 20px; right: 20px;
    background: var(--gradient-red);
    color: #fff;
    padding: 5px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
}
.price-name { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.price-desc { font-size: 14px; opacity: 0.7; margin-bottom: 22px; }
.price-num { font-size: 46px; font-weight: 800; color: var(--primary-red); margin-bottom: 24px; }
.price-card.featured .price-num { color: var(--red-light); }
.price-num span { font-size: 15px; font-weight: 400; opacity: 0.6; }
.price-list { margin-bottom: 30px; flex: 1; }
.price-list li { padding: 10px 0; border-bottom: 1px solid rgba(0,0,0,0.06); font-size: 14px; display: flex; align-items: center; gap: 10px; }
.price-card.featured .price-list li { border-color: rgba(255,255,255,0.12); }
.price-list li::before { content: '✓'; color: var(--primary-red); font-weight: 800; }
.price-card.featured .price-list li::before { color: var(--red-light); }

/* 客户评价 */
.review-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 28px; }
.review-card {
    background: var(--light-white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-soft);
    position: relative;
    transition: var(--transition-smooth);
}
.review-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-mid); }
.review-card .quote { font-size: 42px; color: var(--primary-red); line-height: 1; opacity: 0.3; margin-bottom: 10px; }
.review-card p { font-size: 14.5px; color: #3a3d46; line-height: 1.9; margin-bottom: 20px; }
.reviewer { display: flex; align-items: center; gap: 14px; }
.reviewer img { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; }
.reviewer strong { display: block; font-size: 15px; }
.reviewer span { font-size: 13px; color: var(--medium-gray); }

/* FAQ 手风琴 */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
    background: var(--light-white);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    box-shadow: var(--shadow-soft);
    overflow: hidden;
    transition: var(--transition-smooth);
}
.faq-item.open { box-shadow: var(--shadow-mid); }
.faq-q {
    padding: 22px 28px;
    font-size: 17px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}
.faq-q .plus { font-size: 24px; color: var(--primary-red); font-weight: 300; transition: var(--transition-smooth); flex-shrink: 0; }
.faq-item.open .faq-q .plus { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-a-inner { padding: 0 28px 24px; font-size: 14.5px; color: var(--medium-gray); line-height: 1.9; }

/* 分屏内容块 */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.split-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-mid); position: relative; }
.split-img img { width: 100%; height: 100%; object-fit: cover; }
.split-img .img-tag {
    position: absolute;
    bottom: 20px; left: 20px;
    background: rgba(19,19,24,0.85);
    color: #fff;
    padding: 10px 18px;
    border-radius: 10px;
    font-size: 13px;
    backdrop-filter: blur(6px);
}
.split h3 { font-size: 32px; font-weight: 800; margin-bottom: 18px; line-height: 1.3; }
.split h3 .accent { color: var(--primary-red); }
.split p { font-size: 15.5px; color: var(--medium-gray); line-height: 2; margin-bottom: 18px; }
.split ul { margin-bottom: 26px; }
.split ul li { padding: 8px 0; font-size: 15px; display: flex; align-items: center; gap: 10px; }
.split ul li::before { content: '✓'; color: var(--primary-red); font-weight: 800; }

/* CTA 横幅 */
.cta-banner {
    position: relative;
    background: var(--gradient-red);
    border-radius: 28px;
    padding: 70px 60px;
    overflow: hidden;
    color: #fff;
}
.cta-banner::before {
    content: '';
    position: absolute;
    right: -80px; top: -80px;
    width: 320px; height: 320px;
    border-radius: 50%;
    background: rgba(255,255,255,0.10);
}
.cta-banner::after {
    content: '';
    position: absolute;
    right: 40px; bottom: -100px;
    width: 260px; height: 260px;
    border-radius: 50%;
    background: rgba(255,255,255,0.07);
}
.cta-inner { position: relative; z-index: 2; display: flex; justify-content: space-between; align-items: center; gap: 40px; flex-wrap: wrap; }
.cta-inner h3 { font-size: 34px; font-weight: 800; margin-bottom: 10px; }
.cta-inner p { font-size: 16px; opacity: 0.92; }

/* 联系表单 */
.form-box { background: var(--light-white); border-radius: var(--radius-lg); padding: 44px; box-shadow: var(--shadow-mid); }
.form-box h3 { font-size: 26px; font-weight: 700; margin-bottom: 8px; }
.form-box .form-sub { font-size: 14px; color: var(--medium-gray); margin-bottom: 30px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-grid .full { grid-column: 1 / -1; }
.form-group { margin-bottom: 0; }
.form-label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 9px; color: var(--deep-black); }
.form-input, .form-textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--line-gray);
    border-radius: 12px;
    font-size: 15px;
    background: #FBFBFC;
    transition: var(--transition-smooth);
    font-family: inherit;
    color: var(--deep-black);
}
.form-input:focus, .form-textarea:focus { outline: none; border-color: var(--primary-red); background: #fff; box-shadow: 0 0 0 4px rgba(230,57,70,0.08); }
.form-textarea { min-height: 130px; resize: vertical; }

/* 联系信息卡 */
.contact-info { background: var(--gradient-dark); color: #fff; border-radius: var(--radius-lg); padding: 44px; }
.contact-info h3 { font-size: 26px; font-weight: 700; margin-bottom: 26px; }
.info-line { display: flex; align-items: flex-start; gap: 16px; padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,0.08); }
.info-line:last-child { border-bottom: none; }
.info-ico { width: 48px; height: 48px; border-radius: 13px; background: rgba(230,57,70,0.18); display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 20px; }
.info-line strong { display: block; font-size: 13px; opacity: 0.65; margin-bottom: 3px; }
.info-line span { font-size: 16px; font-weight: 600; }

/* 页脚 */
.footer { background: #0E0E12; color: var(--light-white); padding: 80px 0 0; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1.4fr; gap: 44px; padding-bottom: 56px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand p { font-size: 14px; line-height: 1.9; opacity: 0.62; margin-bottom: 22px; }
.footer-social { display: flex; gap: 12px; }
.social-link {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: flex; align-items: center; justify-content: center;
    font-size: 16px;
    transition: var(--transition-smooth);
}
.social-link:hover { background: var(--primary-red); transform: translateY(-3px); }
.footer-title { font-size: 17px; font-weight: 700; margin-bottom: 22px; position: relative; padding-bottom: 12px; }
.footer-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 28px; height: 2px; background: var(--primary-red); }
.footer-links li { margin-bottom: 11px; }
.footer-links a { font-size: 14px; opacity: 0.65; transition: var(--transition-smooth); }
.footer-links a:hover { opacity: 1; color: var(--red-light); padding-left: 6px; }
.footer-contact p { font-size: 14px; opacity: 0.65; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.footer-bottom { padding: 24px 0; text-align: center; font-size: 13px; opacity: 0.5; }

/* 返回顶部 */
.back-top {
    position: fixed;
    right: 28px; bottom: 28px;
    width: 46px; height: 46px;
    border-radius: 50%;
    background: var(--gradient-red);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    box-shadow: 0 10px 26px rgba(230,57,70,0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-smooth);
    z-index: 900;
    cursor: pointer;
    border: none;
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { transform: translateY(-4px); }

/* 浮动咨询 */
.float-cta {
    position: fixed;
    left: 24px; bottom: 28px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 900;
}
.float-cta a {
    width: 52px; height: 52px;
    border-radius: 50%;
    background: var(--gradient-red);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    box-shadow: 0 10px 26px rgba(230,57,70,0.4);
    transition: var(--transition-smooth);
}
.float-cta a:hover { transform: translateY(-4px) scale(1.05); }

/* ========== 动画 ========== */
.fade-in { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-left { opacity: 0; transform: translateX(-40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.fade-left.visible { opacity: 1; transform: translateX(0); }
.fade-right { opacity: 0; transform: translateX(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.fade-right.visible { opacity: 1; transform: translateX(0); }

@keyframes floatY { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
.float-anim { animation: floatY 5s ease-in-out infinite; }

@keyframes pulseGlow { 0%,100% { box-shadow: 0 0 0 0 rgba(230,57,70,0.5); } 50% { box-shadow: 0 0 0 16px rgba(230,57,70,0); } }
.pulse { animation: pulseGlow 2.6s ease-out infinite; }

/* ========== 响应式 ========== */
@media (max-width: 1200px) {
    .dropdown-menu.mega { min-width: 640px; }
    .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; }
    .hero-title { font-size: 48px; }
}

@media (max-width: 1024px) {
    .nav-menu {
        position: fixed;
        top: 0; right: -100%;
        width: 340px;
        height: 100vh;
        background: #131318;
        flex-direction: column;
        align-items: stretch;
        padding: 100px 24px 40px;
        gap: 4px;
        transition: var(--transition-smooth);
        box-shadow: -10px 0 40px rgba(0,0,0,0.5);
        overflow-y: auto;
    }
    .nav-menu.active { right: 0; }
    .hamburger { display: flex; }
    .nav-cta { display: none; }

    .nav-link { padding: 14px 16px; border-radius: 10px; justify-content: space-between; width: 100%; }
    .nav-link::after { display: none; }
    .nav-item { width: 100%; }

    .dropdown-menu, .dropdown-menu.mega {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        background: transparent;
        border: none;
        box-shadow: none;
        display: none;
        padding: 6px 0 6px 16px;
        width: 100%;
        min-width: 0;
        max-width: none;
    }
    .nav-item.open > .dropdown-menu, .nav-item.open > .dropdown-menu.mega { display: block; }
    .dropdown-menu.mega { grid-template-columns: 1fr; }
    .dropdown-menu.mega .mega-col { border-right: none; padding-right: 0; }
    .dropdown-foot { display: none; }
    .dropdown-link { padding: 11px 12px; font-size: 14px; }
    .mega-title { border-bottom: none; margin-bottom: 0; padding-bottom: 4px; }

    .hero-split .hero-inner { grid-template-columns: 1fr; }
    .split { grid-template-columns: 1fr; gap: 40px; }
    .hero-title { font-size: 42px; }
    .cta-banner { padding: 50px 34px; }
}

@media (max-width: 768px) {
    .section { padding: 70px 0; }
    .section-title { font-size: 32px; }
    .hero { min-height: auto; padding: 120px 0 70px; }
    .hero-title { font-size: 34px; }
    .hero-sub { font-size: 16px; }
    .hero-stats { gap: 24px; }
    .hero-stat .num { font-size: 30px; }
    .form-grid { grid-template-columns: 1fr; }
    .form-box { padding: 28px 22px; }
    .footer-grid { grid-template-columns: 1fr; gap: 34px; }
    .cta-inner { flex-direction: column; text-align: center; }
    .cta-inner h3 { font-size: 26px; }
    .nav-container { padding: 0 18px; }
    .logo-text { font-size: 18px; }
    .logo img { height: 38px; }
}