/* ==========================================================
   明安会计 - 一站式企业财税服务
   风格：淡蓝清新 · 专业可信 · 大留白
   ========================================================== */

:root {
    --primary: #3E9BFF;
    --primary-dark: #1F7AD6;
    --primary-deep: #14508F;
    --primary-soft: #E6F2FF;
    --primary-mist: #F2F8FF;
    --bg: #FFFFFF;
    --bg-tint: #F5FAFF;
    --ink: #1C3A5C;
    --ink-light: #5E7D9E;
    --line: #E3EEFA;
    --radius: 18px;
    --shadow-sm: 0 4px 16px rgba(62, 155, 255, 0.08);
    --shadow-md: 0 12px 36px rgba(62, 155, 255, 0.12);
    --shadow-lg: 0 24px 60px rgba(62, 155, 255, 0.16);
    --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    color: var(--ink);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    transition: box-shadow .3s ease, border-color .3s ease;
}

.navbar.scrolled {
    border-bottom-color: var(--line);
    box-shadow: 0 8px 24px rgba(28, 58, 92, 0.06);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 74px;
}

.logo { display: flex; align-items: center; gap: 12px; }

.logo-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 2px;
    display: flex;
    flex-direction: column;
    line-height: 1.25;
}

.logo-text small {
    font-size: 9px;
    font-weight: 500;
    letter-spacing: 3px;
    color: var(--ink-light);
    margin-top: 2px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 34px;
}

.nav-menu a {
    font-size: 15px;
    color: var(--ink);
    opacity: .85;
    position: relative;
    padding: 6px 0;
    transition: color .25s ease, opacity .25s ease;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--primary);
    transition: width .3s ease;
}

.nav-menu a:hover,
.nav-menu a.active { color: var(--primary); opacity: 1; }

.nav-menu a:hover::after,
.nav-menu a.active::after { width: 100%; }

.nav-cta {
    background: linear-gradient(135deg, #5FB3FF 0%, #2E8BF0 100%);
    color: #fff !important;
    padding: 9px 22px !important;
    border-radius: 999px;
    box-shadow: 0 8px 20px rgba(62, 155, 255, 0.3);
    opacity: 1 !important;
}

.nav-cta::after { display: none; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(62, 155, 255, 0.4); }

/* 移动端汉堡按钮 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    border-radius: 2px;
    background: var(--ink);
    transition: transform .3s ease, opacity .3s ease;
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==================== Hero ==================== */
.hero {
    position: relative;
    padding: 170px 0 120px;
    background: linear-gradient(160deg, #DFF0FF 0%, #EFF7FF 45%, #FAFDFF 75%, #FFFFFF 100%);
    overflow: hidden;
}

.hero-deco {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

.deco-1 {
    width: 480px;
    height: 480px;
    background: radial-gradient(circle, rgba(94, 173, 255, 0.22) 0%, transparent 70%);
    top: -140px;
    right: -100px;
}

.deco-2 {
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(94, 173, 255, 0.16) 0%, transparent 70%);
    bottom: -120px;
    left: -120px;
}

.hero-inner {
    display: flex;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 2;
}

.hero-content { flex: 1; }

.hero-tag {
    display: inline-block;
    font-size: 13px;
    letter-spacing: 2px;
    color: var(--primary-dark);
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(62, 155, 255, 0.35);
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 22px;
}

.hero h1 {
    font-size: 52px;
    line-height: 1.25;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--ink);
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 17px;
    color: var(--ink-light);
    max-width: 520px;
    margin-bottom: 34px;
}

.hero-btns { display: flex; gap: 16px; margin-bottom: 40px; }

.btn {
    display: inline-block;
    padding: 14px 34px;
    border-radius: 999px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #5FB3FF 0%, #2E8BF0 100%);
    color: #fff;
    box-shadow: 0 10px 26px rgba(62, 155, 255, 0.35);
}

.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 32px rgba(62, 155, 255, 0.45); }

.btn-ghost {
    background: rgba(255, 255, 255, 0.85);
    color: var(--primary-dark);
    border: 1.5px solid rgba(62, 155, 255, 0.45);
}

.btn-ghost:hover { background: #fff; transform: translateY(-3px); box-shadow: var(--shadow-sm); }

.btn-block { width: 100%; text-align: center; }

.hero-trust { display: flex; gap: 26px; }

.trust-item {
    font-size: 14px;
    color: var(--ink-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.trust-item i {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, #5FB3FF, #2E8BF0);
    color: #fff;
    font-size: 12px;
    font-style: normal;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Hero 右侧卡片 */
.hero-visual {
    flex: 1;
    position: relative;
    display: flex;
    justify-content: center;
}

.hero-card {
    background: #fff;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
}

.card-main {
    width: 380px;
    padding: 32px;
    position: relative;
    z-index: 2;
    transform: rotate(1.2deg);
}

.card-title {
    display: flex;
    align-items: center;
    gap: 14px;
    padding-bottom: 20px;
    margin-bottom: 18px;
    border-bottom: 1.5px dashed var(--line);
}

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: var(--primary-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.card-title strong { font-size: 18px; display: block; }
.card-title small { color: var(--ink-light); font-size: 13px; }

.card-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    font-size: 15px;
}

.card-list li + li { border-top: 1px dashed var(--line); }
.card-list span { font-weight: 600; color: var(--ink); }

.card-list em {
    font-style: normal;
    font-size: 12px;
    color: var(--primary-dark);
    background: var(--primary-soft);
    padding: 3px 12px;
    border-radius: 999px;
}

.card-link {
    display: block;
    margin-top: 18px;
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-dark);
    background: var(--primary-mist);
    padding: 11px;
    border-radius: 12px;
    transition: background .25s ease, color .25s ease;
}

.card-link:hover { background: var(--primary); color: #fff; }

.card-float {
    position: absolute;
    right: 2%;
    top: -12px;
    z-index: 3;
    padding: 16px 26px;
    border-radius: 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, #fff 0%, #EDF6FF 100%);
    transform: rotate(-4deg);
}

.float-num {
    font-size: 30px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
}

.card-float small { color: var(--ink-light); font-size: 12px; }

/* Hero 底部波浪 */
.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    z-index: 3;
    line-height: 0;
}

.hero-wave svg { width: 100%; height: 70px; }

/* ==================== 通用区块 ==================== */
.section { padding: 100px 0; position: relative; }
.section-tint { background: var(--bg-tint); }

.section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 4px;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    margin-bottom: 14px;
}

.section-head h2 {
    font-size: 38px;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--ink);
    margin-bottom: 14px;
}

.section-head p { color: var(--ink-light); font-size: 16px; }

/* ==================== 服务项目 ==================== */
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 36px 32px;
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #5FB3FF, #2E8BF0);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .35s ease;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.service-card:hover::before { transform: scaleX(1); }

.service-icon {
    width: 62px;
    height: 62px;
    border-radius: 18px;
    background: var(--primary-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 22px;
    transition: transform .3s ease, background .3s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.08) rotate(-6deg);
    background: linear-gradient(135deg, #5FB3FF, #2E8BF0);
}

.service-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; color: var(--ink); }
.service-card p { font-size: 14.5px; color: var(--ink-light); }

/* ==================== 关于我们 ==================== */
.about-inner {
    display: flex;
    align-items: center;
    gap: 70px;
}

.about-visual { flex: 1.05; }

.about-panel {
    background: #fff;
    border-radius: 24px;
    padding: 40px 38px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--line);
}

.about-panel h3 { font-size: 26px; font-weight: 800; margin-bottom: 18px; }
.about-panel h3 span { color: var(--primary); }
.about-panel p { color: var(--ink-light); font-size: 15px; margin-bottom: 14px; }

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-top: 26px;
}

.stat-item {
    background: #fff;
    border-radius: 16px;
    padding: 22px 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--line);
}

.stat-item strong {
    font-size: 30px;
    font-weight: 800;
    color: var(--primary);
    display: block;
    line-height: 1.2;
}

.stat-item span { font-size: 13px; color: var(--ink-light); }

.about-content { flex: 1; }

.about-lead {
    font-size: 17px;
    color: var(--ink);
    font-weight: 600;
    margin-bottom: 26px;
}

.about-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 15px;
    color: var(--ink-light);
    margin-bottom: 16px;
}

.about-list i {
    font-style: normal;
    color: var(--primary);
    font-size: 13px;
    margin-top: 3px;
}

.client-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 30px;
}

.client-tags span {
    font-size: 13px;
    color: var(--primary-dark);
    background: #fff;
    border: 1px solid rgba(62, 155, 255, 0.3);
    padding: 6px 18px;
    border-radius: 999px;
    transition: all .25s ease;
}

.client-tags span:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ==================== 核心优势 ==================== */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.advantage-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 34px 28px;
    border: 1px solid var(--line);
    transition: transform .3s ease, box-shadow .3s ease;
    position: relative;
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.adv-num {
    font-size: 40px;
    font-weight: 800;
    color: var(--primary-soft);
    line-height: 1;
    margin-bottom: 18px;
    transition: color .3s ease;
}

.advantage-card:hover .adv-num { color: var(--primary); }

.advantage-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.advantage-card p { font-size: 14px; color: var(--ink-light); }

/* ==================== 服务流程 ==================== */
.process-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 22px;
    position: relative;
}

.process-grid::before {
    content: '';
    position: absolute;
    top: 34px;
    left: 8%;
    right: 8%;
    height: 2px;
    background: repeating-linear-gradient(90deg, #A8D4FF 0 10px, transparent 10px 20px);
    z-index: 0;
}

.process-item {
    text-align: center;
    position: relative;
    z-index: 1;
    padding: 0 8px;
}

.process-step {
    width: 68px;
    height: 68px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--primary);
    color: var(--primary);
    font-size: 19px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 20px rgba(62, 155, 255, 0.18);
    transition: all .3s ease;
    position: relative;
    z-index: 2;
}

.process-item:hover .process-step {
    background: linear-gradient(135deg, #5FB3FF, #2E8BF0);
    color: #fff;
    transform: scale(1.08);
}

.process-item h3 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.process-item p { font-size: 13px; color: var(--ink-light); }

/* ==================== 案例分享 ==================== */
.case-card {
    display: flex;
    background: #fff;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--line);
}

.case-result {
    flex: 0 0 300px;
    background: linear-gradient(160deg, #3E9BFF 0%, #1F6FD0 100%);
    color: #fff;
    padding: 48px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.case-result::after {
    content: '';
    position: absolute;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    right: -70px;
    bottom: -70px;
}

.case-label {
    font-size: 13px;
    letter-spacing: 2px;
    background: rgba(255, 255, 255, 0.2);
    display: inline-block;
    width: fit-content;
    padding: 5px 14px;
    border-radius: 999px;
    margin-bottom: 18px;
}

.case-result strong {
    font-size: 58px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 8px;
    position: relative;
    z-index: 1;
}

.case-result strong span { font-size: 26px; }

.case-result small { font-size: 14px; opacity: .9; position: relative; z-index: 1; }

.case-body { flex: 1; padding: 42px 44px; }

.case-body h3 { font-size: 22px; font-weight: 800; margin-bottom: 22px; }

.case-row {
    display: flex;
    gap: 14px;
    margin-bottom: 16px;
}

.case-row p { font-size: 14.5px; color: var(--ink-light); }
.case-row b { color: var(--ink); }

.case-dot {
    flex: 0 0 12px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-top: 7px;
}

.dot-bg { background: #9CC9FF; }
.dot-risk { background: #FFB84D; }
.dot-act { background: #4ADE80; }
.dot-done { background: #3E9BFF; }

/* 案例导语 */
.case-intro {
    font-size: 14.5px;
    color: var(--ink-light);
    line-height: 1.9;
}

/* 案例经过 */
.case-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 28px;
}

.case-detail {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 30px 30px 26px;
    box-shadow: var(--shadow-sm);
    transition: transform .3s ease, box-shadow .3s ease;
}

.case-detail:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.detail-head {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 10px;
}

.detail-num {
    width: 40px;
    height: 40px;
    flex: 0 0 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, #5FB3FF 0%, #2E8BF0 100%);
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 14px rgba(62, 155, 255, 0.3);
}

.detail-head h3 { font-size: 18px; font-weight: 700; color: var(--ink); }

.detail-desc {
    font-size: 13.5px;
    color: var(--ink-light);
    margin-bottom: 14px;
    padding-left: 54px;
}

.case-detail ul { padding-left: 54px; }

.case-detail li {
    font-size: 14px;
    color: var(--ink-light);
    margin-bottom: 10px;
    line-height: 1.8;
    position: relative;
}

.case-detail li::before {
    content: '';
    position: absolute;
    left: -16px;
    top: 9px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
}

.case-detail li b { color: var(--ink); }

/* 案例启示 */
.case-insights {
    margin-top: 32px;
    background: linear-gradient(160deg, #EAF4FF 0%, #F5FAFF 100%);
    border: 1px solid rgba(62, 155, 255, 0.18);
    border-radius: 24px;
    padding: 40px 44px;
}

.case-insights h3 {
    font-size: 22px;
    font-weight: 800;
    color: var(--ink);
    margin-bottom: 26px;
    text-align: center;
}

.insight-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.insight-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: #fff;
    border-radius: 14px;
    padding: 20px 22px;
    box-shadow: var(--shadow-sm);
    transition: transform .25s ease, box-shadow .25s ease;
}

.insight-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.insight-wide { grid-column: 1 / -1; }

.insight-num {
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
    border-radius: 50%;
    background: var(--primary-soft);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.insight-item p { font-size: 14px; color: var(--ink-light); line-height: 1.8; }
.insight-item p b { color: var(--ink); }

/* ==================== 联系我们 ==================== */
.contact-inner {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 56px;
    align-items: start;
}

.contact-lead {
    color: var(--ink-light);
    font-size: 15px;
    margin-bottom: 32px;
    max-width: 420px;
}

.contact-list li {
    display: flex;
    gap: 18px;
    align-items: flex-start;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 20px 24px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
    transition: transform .25s ease, box-shadow .25s ease;
}

.contact-list li:hover { transform: translateX(6px); box-shadow: var(--shadow-md); }

.contact-icon {
    width: 48px;
    height: 48px;
    flex: 0 0 48px;
    border-radius: 14px;
    background: var(--primary-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.contact-list small {
    display: block;
    font-size: 12px;
    color: var(--ink-light);
    margin-bottom: 2px;
}

.contact-list strong { font-size: 15px; color: var(--ink); }

/* 咨询表单 */
.contact-form-wrap {
    background: #fff;
    border-radius: 24px;
    padding: 38px 36px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--line);
}

.contact-form-wrap h3 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 24px;
    position: relative;
    padding-left: 16px;
}

.contact-form-wrap h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 4px;
    border-radius: 4px;
    background: linear-gradient(180deg, #5FB3FF, #2E8BF0);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.consultation-form input,
.consultation-form select,
.consultation-form textarea {
    width: 100%;
    font-family: inherit;
    font-size: 14.5px;
    color: var(--ink);
    background: var(--primary-mist);
    border: 1.5px solid transparent;
    border-radius: 12px;
    padding: 13px 16px;
    margin-bottom: 14px;
    outline: none;
    transition: border-color .25s ease, background .25s ease, box-shadow .25s ease;
    -webkit-appearance: none;
    appearance: none;
}

.consultation-form textarea { resize: vertical; }

.consultation-form select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235E7D9E' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.consultation-form input:focus,
.consultation-form select:focus,
.consultation-form textarea:focus {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(62, 155, 255, 0.12);
}

.consultation-form input::placeholder,
.consultation-form textarea::placeholder {
    color: #9BB6D2;
}

.form-message {
    font-size: 14px;
    margin: 4px 0 14px;
    min-height: 20px;
}

.form-message.success { color: #16A34A; }
.form-message.error { color: #DC2626; }

/* ==================== 页脚 ==================== */
.footer {
    background: linear-gradient(180deg, #123A63 0%, #0D2C4D 100%);
    color: #B9CDE4;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
    gap: 40px;
    padding: 64px 24px 44px;
}

.footer-brand .logo-text { color: #fff; }
.footer-brand .logo-text small { color: #7FA6CC; }
.footer-brand p { font-size: 14px; margin-top: 18px; line-height: 1.9; }

.footer h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
}

.footer-links a {
    display: block;
    font-size: 14px;
    margin-bottom: 10px;
    transition: color .25s ease, transform .25s ease;
}

.footer-links a:hover { color: #7FC1FF; transform: translateX(4px); }

.footer-contact p { font-size: 14px; margin-bottom: 12px; line-height: 1.9; }

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 20px 0;
}

.footer-bottom p {
    text-align: center;
    font-size: 13px;
    color: #7FA6CC;
}

.footer-bottom p + p { margin-top: 6px; }

.footer-bottom .beian a {
    color: #7FA6CC;
    transition: color .3s ease;
}

.footer-bottom .beian a:hover { color: #fff; }

/* ==================== 滚动动画 ==================== */
.fade-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .7s ease, transform .7s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .hero h1 { font-size: 42px; }
    .hero-inner { gap: 40px; }
    .service-grid { grid-template-columns: repeat(2, 1fr); }
    .advantage-grid { grid-template-columns: repeat(2, 1fr); }
    .process-grid { grid-template-columns: repeat(3, 1fr); row-gap: 40px; }
    .process-grid::before { display: none; }
    .about-inner { flex-direction: column; gap: 50px; }
    .case-card { flex-direction: column; }
    .case-result { flex: auto; }
}

@media (max-width: 768px) {
    .section { padding: 72px 0; }
    .section-head h2 { font-size: 30px; }

    /* 移动端导航 */
    .hamburger { display: flex; }
    .nav-menu {
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: #fff;
        box-shadow: 0 20px 40px rgba(28, 58, 92, 0.12);
        padding: 12px 24px 20px;
        display: none;
        border-radius: 0 0 20px 20px;
    }
    .nav-menu.active { display: flex; }
    .nav-menu a { padding: 14px 0; border-bottom: 1px solid var(--line); }
    .nav-menu a::after { display: none; }
    .nav-cta { margin-top: 14px; text-align: center; border-bottom: none !important; }

    /* Hero */
    .hero { padding: 130px 0 90px; }
    .hero-inner { flex-direction: column; text-align: center; }
    .hero-desc { margin-left: auto; margin-right: auto; }
    .hero-btns { justify-content: center; }
    .hero-trust { justify-content: center; flex-wrap: wrap; }
    .card-main { width: 100%; max-width: 380px; transform: none; }
    .card-float { right: 4%; }

    /* 服务 */
    .service-grid { grid-template-columns: 1fr; }
    .advantage-grid { grid-template-columns: 1fr; }
    .process-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: repeat(2, 1fr); }
    .contact-inner { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; padding: 48px 24px 32px; }
    .case-body { padding: 30px 26px; }
    .case-result { padding: 36px 30px; }
    .case-detail-grid { grid-template-columns: 1fr; }
    .case-detail { padding: 24px 22px; }
    .detail-desc { padding-left: 0; }
    .case-detail ul { padding-left: 16px; }
    .case-insights { padding: 30px 24px; }
    .insight-grid { grid-template-columns: 1fr; }
}