/* ==========================================================================
   广州恩次方网络科技有限公司 - 网站主样式
   主题：快手橙 #FF6633 + 商务深色 #1A1A2E
   【非技术人员请勿修改本文件】
   ========================================================================== */

/* ---------------- 设计令牌（颜色/字体/阴影） ---------------- */
:root {
    /* 品牌色 */
    --orange: #FF6633;
    --orange-light: #FF8855;
    --orange-dark: #E54E1A;
    --orange-soft: rgba(255, 102, 51, 0.1);

    /* 背景色 */
    --bg-dark: #1A1A2E;
    --bg-dark-2: #16162a;
    --bg-darker: #0F0F1E;
    --bg-card: #ffffff;
    --bg-soft: #F7F8FC;

    /* 文字色 */
    --text-dark: #1A1A2E;
    --text-body: #4A4A5E;
    --text-mute: #8A8A9E;
    --text-light: #FFFFFF;
    --text-light-mute: rgba(255, 255, 255, 0.7);

    /* 辅助 */
    --gold: #FFD700;
    --border: #E8E8F0;
    --border-dark: rgba(255, 255, 255, 0.12);

    /* 渐变 */
    --grad-orange: linear-gradient(135deg, #FF6633 0%, #FF9558 100%);
    --grad-dark: linear-gradient(180deg, #1A1A2E 0%, #0F0F1E 100%);
    --grad-hero: linear-gradient(135deg, #1A1A2E 0%, #2A1A2E 50%, #1A1A2E 100%);

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
    --shadow-md: 0 8px 24px rgba(26, 26, 46, 0.1);
    --shadow-lg: 0 16px 48px rgba(26, 26, 46, 0.15);
    --shadow-orange: 0 12px 32px rgba(255, 102, 51, 0.3);

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-full: 999px;

    /* 间距 */
    --container: 1200px;
    --header-h: 76px;

    /* 字体 */
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
            "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-body);
    background: #ffffff;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: color .25s; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ---------------- 通用容器与排版 ---------------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.section-dark { background: var(--grad-dark); color: var(--text-light-mute); }

.section-head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section-head .eyebrow {
    display: inline-block; font-size: 14px; font-weight: 600; color: var(--orange);
    letter-spacing: 2px; margin-bottom: 14px; text-transform: uppercase;
}
.section-head h2 {
    font-size: clamp(28px, 4vw, 42px); font-weight: 800; color: var(--text-dark);
    line-height: 1.3; margin-bottom: 18px;
}
.section-dark .section-head h2 { color: #fff; }
.section-head p { font-size: 17px; color: var(--text-mute); }
.section-dark .section-head p { color: var(--text-light-mute); }

.text-gradient {
    background: var(--grad-orange);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: transparent;
}

/* ---------------- 按钮 ---------------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 30px; border-radius: var(--radius-full);
    font-size: 16px; font-weight: 600; cursor: pointer;
    transition: all .3s cubic-bezier(.4,0,.2,1); white-space: nowrap;
    border: 2px solid transparent;
}
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-lg { padding: 16px 40px; font-size: 17px; }
.btn-primary { background: var(--grad-orange); color: #fff; box-shadow: var(--shadow-orange); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(255,102,51,.45); color:#fff; }
.btn-outline { background: transparent; border-color: rgba(255,255,255,.4); color: #fff; }
.btn-outline:hover { background: #fff; color: var(--text-dark); border-color: #fff; }
.btn-dark { background: var(--bg-dark); color: #fff; }
.btn-dark:hover { background: var(--bg-darker); transform: translateY(-2px); color:#fff; }
.btn-ghost { background: var(--orange-soft); color: var(--orange); }
.btn-ghost:hover { background: var(--orange); color: #fff; }

/* ==========================================================================
   顶部导航
   ========================================================================== */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    height: var(--header-h); display: flex; align-items: center;
    transition: all .35s ease; background: transparent;
}
.site-header.scrolled {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    height: 66px;
}
/* 未滚动时（在深色 hero 上）文字白色 */
.site-header:not(.scrolled) .logo-text,
.site-header:not(.scrolled) .nav-menu a,
.site-header:not(.scrolled) .nav-phone { color: #fff; }
.site-header:not(.scrolled) .logo-mark { background: rgba(255,255,255,.15); color: #fff; }
.site-header:not(.scrolled) .nav-phone { border-color: rgba(255,255,255,.35); }
/* 滚动后文字深色 */
.site-header.scrolled .logo-text,
.site-header.scrolled .nav-menu a,
.site-header.scrolled .nav-phone { color: var(--text-dark); }
.site-header.scrolled .logo-mark { background: var(--orange); color: #fff; }
.site-header.scrolled .nav-phone { border-color: var(--border); }

.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
    width: 40px; height: 40px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 20px; background: var(--orange); color: #fff;
    transition: all .3s;
}
.logo-text { font-size: 22px; font-weight: 800; color: #fff; transition: color .3s; letter-spacing: 1px; }
.logo-text small { font-size: 13px; font-weight: 500; opacity: .7; margin-left: 2px; }

.nav-menu { display: flex; gap: 8px; }
.nav-menu a {
    position: relative; padding: 8px 16px; font-size: 16px; font-weight: 500;
    color: #fff; border-radius: 8px; transition: all .25s;
}
.nav-menu a::after {
    content: ""; position: absolute; left: 50%; bottom: 2px; transform: translateX(-50%);
    width: 0; height: 2px; background: var(--orange); transition: width .3s; border-radius: 2px;
}
.nav-menu a:hover::after, .nav-menu a.active::after { width: 22px; }
.nav-menu a:hover, .nav-menu a.active { color: var(--orange); }
.site-header.scrolled .nav-menu a:hover,
.site-header.scrolled .nav-menu a.active { color: var(--orange); }

.nav-action { display: flex; align-items: center; gap: 12px; }
.nav-phone {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px; border: 2px solid; border-radius: var(--radius-full);
    font-size: 15px; font-weight: 600; color: #fff; transition: all .25s;
}
.nav-phone svg { color: var(--orange); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span {
    width: 26px; height: 3px; background: currentColor; border-radius: 2px;
    transition: all .3s; color: inherit;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ==========================================================================
   首屏 Hero
   ========================================================================== */
.hero {
    position: relative; min-height: 100vh; display: flex; align-items: center;
    background: var(--grad-hero); color: #fff; overflow: hidden;
    padding-top: var(--header-h);
}
/* hero 背景光晕装饰 */
.hero::before {
    content: ""; position: absolute; top: -10%; right: -10%;
    width: 600px; height: 600px; border-radius: 50%;
    background: radial-gradient(circle, rgba(255,102,51,.35) 0%, transparent 70%);
    filter: blur(40px);
}
.hero::after {
    content: ""; position: absolute; bottom: -20%; left: -10%;
    width: 500px; height: 500px; border-radius: 50%;
    background: radial-gradient(circle, rgba(255,215,0,.15) 0%, transparent 70%);
    filter: blur(40px);
}
.hero-inner {
    position: relative; z-index: 2; max-width: 880px; padding: 80px 0;
}
.hero .badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 18px; border-radius: var(--radius-full);
    background: rgba(255,102,51,.15); border: 1px solid rgba(255,102,51,.4);
    color: var(--orange-light); font-size: 14px; font-weight: 600; margin-bottom: 28px;
}
.hero .badge::before {
    content: ""; width: 8px; height: 8px; border-radius: 50%;
    background: var(--orange); box-shadow: 0 0 12px var(--orange);
}
.hero h1 {
    font-size: clamp(36px, 6vw, 64px); font-weight: 900; line-height: 1.15;
    margin-bottom: 24px; color: #fff; letter-spacing: 1px;
}
.hero h1 .text-gradient { display: inline-block; }
.hero p.lead {
    font-size: clamp(16px, 2vw, 20px); color: var(--text-light-mute);
    max-width: 680px; margin-bottom: 40px; line-height: 1.8;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }

/* hero 下面的滚动提示 */
.hero-scroll-hint {
    position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
    z-index: 2; color: rgba(255,255,255,.5); font-size: 13px; text-align: center;
    animation: bounce 2s infinite;
}
@keyframes bounce {
    0%,100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ==========================================================================
   数据统计条
   ========================================================================== */
.stats-bar {
    background: var(--bg-dark); padding: 56px 0; margin-top: -1px;
}
.stats-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center;
}
.stat-item { padding: 12px; position: relative; }
.stat-item:not(:last-child)::after {
    content: ""; position: absolute; right: 0; top: 20%; height: 60%;
    width: 1px; background: var(--border-dark);
}
.stat-num {
    font-size: clamp(34px, 5vw, 52px); font-weight: 900; line-height: 1;
    background: var(--grad-orange);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.stat-label { margin-top: 12px; color: var(--text-light-mute); font-size: 15px; }

/* ==========================================================================
   业务卡片（首页 + 业务页通用）
   ========================================================================== */
.services-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
}
.service-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 38px 30px; transition: all .4s cubic-bezier(.4,0,.2,1);
    position: relative; overflow: hidden;
}
.service-card::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
    background: var(--grad-orange); transform: scaleX(0); transform-origin: left;
    transition: transform .4s;
}
.service-card:hover {
    transform: translateY(-10px); box-shadow: var(--shadow-lg); border-color: transparent;
}
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
    width: 72px; height: 72px; border-radius: 18px; display: flex;
    align-items: center; justify-content: center; font-size: 36px;
    background: var(--orange-soft); margin-bottom: 22px;
}
.service-tag {
    display: inline-block; padding: 4px 12px; font-size: 12px; font-weight: 600;
    background: var(--orange-soft); color: var(--orange); border-radius: var(--radius-full);
    margin-bottom: 14px;
}
.service-card h3 { font-size: 22px; font-weight: 800; color: var(--text-dark); margin-bottom: 12px; }
.service-card p { font-size: 15px; color: var(--text-mute); margin-bottom: 18px; line-height: 1.7; }
.service-points li {
    display: flex; align-items: center; gap: 8px; font-size: 14px;
    color: var(--text-body); padding: 5px 0;
}
.service-points li::before {
    content: "✓"; color: var(--orange); font-weight: 800; font-size: 16px;
}

/* ==========================================================================
   优势 / 为什么选择我们
   ========================================================================== */
.adv-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.adv-card {
    background: rgba(255,255,255,.04); border: 1px solid var(--border-dark);
    border-radius: var(--radius-lg); padding: 34px 28px; transition: all .35s;
    backdrop-filter: blur(8px);
}
.adv-card:hover {
    background: rgba(255,102,51,.08); border-color: rgba(255,102,51,.4);
    transform: translateY(-6px);
}
.adv-icon {
    width: 60px; height: 60px; border-radius: 16px; display: flex;
    align-items: center; justify-content: center; font-size: 30px;
    background: var(--grad-orange); margin-bottom: 20px;
}
.adv-card h3 { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.adv-card p { font-size: 15px; color: var(--text-light-mute); line-height: 1.8; }

/* ==========================================================================
   流程（四步走）
   ========================================================================== */
.process-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative;
}
.process-grid::before {
    content: ""; position: absolute; top: 36px; left: 12%; right: 12%; height: 2px;
    background: repeating-linear-gradient(90deg, var(--border) 0 8px, transparent 8px 16px);
    z-index: 0;
}
.process-item { text-align: center; position: relative; z-index: 1; }
.process-step {
    width: 72px; height: 72px; border-radius: 50%; margin: 0 auto 22px;
    display: flex; align-items: center; justify-content: center;
    font-size: 26px; font-weight: 900; color: #fff;
    background: var(--grad-orange); box-shadow: var(--shadow-orange);
    border: 5px solid #fff;
}
.process-item h3 { font-size: 20px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.process-item p { font-size: 15px; color: var(--text-mute); }

/* ==========================================================================
   CTA 行动召唤条
   ========================================================================== */
.cta-band {
    background: var(--grad-orange); color: #fff; border-radius: var(--radius-lg);
    padding: 56px 60px; display: flex; align-items: center; justify-content: space-between;
    gap: 32px; flex-wrap: wrap; box-shadow: var(--shadow-orange); position: relative; overflow: hidden;
}
.cta-band::before {
    content: ""; position: absolute; top: -50%; right: -5%; width: 300px; height: 300px;
    border-radius: 50%; background: rgba(255,255,255,.1);
}
.cta-band h3 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; margin-bottom: 10px; position: relative; }
.cta-band p { font-size: 17px; opacity: .9; position: relative; }
.cta-band .btn { background: #fff; color: var(--orange); position: relative; }
.cta-band .btn:hover { background: var(--bg-dark); color: #fff; }

/* ==========================================================================
   内页通用 Banner（非首页的小头图）
   ========================================================================== */
.page-banner {
    background: var(--grad-hero); color: #fff; padding: calc(var(--header-h) + 70px) 0 70px;
    text-align: center; position: relative; overflow: hidden;
}
.page-banner::before {
    content: ""; position: absolute; top: 10%; right: 5%; width: 400px; height: 400px;
    border-radius: 50%; background: radial-gradient(circle, rgba(255,102,51,.25), transparent 70%);
    filter: blur(40px);
}
.page-banner h1 {
    font-size: clamp(32px, 5vw, 48px); font-weight: 900; margin-bottom: 18px;
    position: relative;
}
.page-banner p { font-size: 18px; color: var(--text-light-mute); position: relative; max-width: 680px; margin: 0 auto; }
.breadcrumb {
    display: flex; justify-content: center; gap: 8px; margin-top: 24px;
    font-size: 14px; color: var(--text-light-mute); position: relative;
}
.breadcrumb a:hover { color: var(--orange-light); }
.breadcrumb span { opacity: .5; }

/* ==========================================================================
   关于我们 - 特色
   ========================================================================== */
.about-feature { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-text h2 {
    font-size: clamp(28px, 4vw, 40px); font-weight: 800; color: var(--text-dark);
    line-height: 1.3; margin-bottom: 22px;
}
.about-text p { font-size: 16px; color: var(--text-body); margin-bottom: 16px; line-height: 1.9; }
.about-list { margin-top: 24px; }
.about-list li {
    display: flex; align-items: flex-start; gap: 12px; padding: 10px 0; font-size: 16px; color: var(--text-dark);
}
.about-list li::before {
    content: "✓"; flex-shrink: 0; width: 24px; height: 24px; border-radius: 50%;
    background: var(--grad-orange); color: #fff; font-size: 14px; font-weight: 800;
    display: flex; align-items: center; justify-content: center; margin-top: 3px;
}
.about-visual {
    border-radius: var(--radius-lg); padding: 50px; text-align: center;
    background: var(--grad-hero); color: #fff; position: relative; overflow: hidden;
}
.about-visual::before {
    content: ""; position: absolute; bottom: -30%; right: -20%; width: 350px; height: 350px;
    border-radius: 50%; background: radial-gradient(circle, rgba(255,102,51,.3), transparent 70%);
}
.about-visual .big-num {
    font-size: 80px; font-weight: 900; line-height: 1; background: var(--grad-orange);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
    position: relative;
}
.about-visual p { margin-top: 14px; color: var(--text-light-mute); position: relative; }

/* 里程碑/历程 */
.milestone-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.milestone-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md);
    padding: 28px; text-align: center; transition: all .3s;
}
.milestone-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: transparent; }
.milestone-year { font-size: 30px; font-weight: 900; color: var(--orange); }
.milestone-card h4 { font-size: 17px; color: var(--text-dark); margin: 10px 0 6px; }
.milestone-card p { font-size: 14px; color: var(--text-mute); }

/* ==========================================================================
   案例页
   ========================================================================== */
.case-filter { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-bottom: 40px; }
.case-filter button {
    padding: 9px 22px; border-radius: var(--radius-full); font-size: 15px; font-weight: 500;
    color: var(--text-body); background: var(--bg-soft); transition: all .25s;
}
.case-filter button.active, .case-filter button:hover {
    background: var(--grad-orange); color: #fff; box-shadow: var(--shadow-orange);
}
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.case-card {
    background: #fff; border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow-sm); transition: all .4s; border: 1px solid var(--border);
}
.case-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.case-cover {
    height: 200px; background: var(--grad-hero); position: relative;
    display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.case-cover::before {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(circle at 30% 30%, rgba(255,102,51,.4), transparent 60%);
}
.case-cover .case-cat {
    position: relative; padding: 6px 16px; background: rgba(255,255,255,.15);
    backdrop-filter: blur(8px); border-radius: var(--radius-full); color: #fff;
    font-size: 13px; font-weight: 600; border: 1px solid rgba(255,255,255,.25);
}
.case-body { padding: 26px; }
.case-body h3 { font-size: 20px; font-weight: 800; color: var(--text-dark); margin-bottom: 10px; }
.case-body p { font-size: 14px; color: var(--text-mute); margin-bottom: 18px; line-height: 1.7; }
.case-metrics { display: flex; gap: 20px; padding-top: 18px; border-top: 1px solid var(--border); }
.case-metric .v { font-size: 22px; font-weight: 900; color: var(--orange); }
.case-metric .l { font-size: 12px; color: var(--text-mute); }

/* ==========================================================================
   联系我们
   ========================================================================== */
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-info-list { margin-bottom: 30px; }
.contact-info-item {
    display: flex; gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--border);
}
.contact-info-item:last-child { border-bottom: none; }
.contact-info-ic {
    flex-shrink: 0; width: 52px; height: 52px; border-radius: 14px;
    background: var(--orange-soft); display: flex; align-items: center; justify-content: center;
    font-size: 24px;
}
.contact-info-item h4 { font-size: 15px; color: var(--text-mute); margin-bottom: 4px; font-weight: 500; }
.contact-info-item p { font-size: 18px; color: var(--text-dark); font-weight: 600; }

.contact-form {
    background: var(--bg-soft); border-radius: var(--radius-lg); padding: 40px;
}
.contact-form h3 { font-size: 24px; font-weight: 800; color: var(--text-dark); margin-bottom: 8px; }
.contact-form .sub { color: var(--text-mute); margin-bottom: 28px; font-size: 15px; }
.form-row { margin-bottom: 18px; }
.form-row label { display: block; font-size: 14px; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; }
.form-row input, .form-row textarea, .form-row select {
    width: 100%; padding: 13px 16px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    font-size: 15px; font-family: inherit; background: #fff; transition: border-color .25s; color: var(--text-dark);
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus {
    outline: none; border-color: var(--orange);
}
.form-row textarea { resize: vertical; min-height: 110px; }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-tip { font-size: 13px; color: var(--text-mute); margin-top: 12px; text-align: center; }

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer { background: var(--bg-darker); color: var(--text-light-mute); padding-top: 70px; }
.footer-top {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 50px;
}
.footer-logo { margin-bottom: 18px; }
.footer-desc { font-size: 14px; line-height: 1.8; margin-bottom: 20px; max-width: 340px; }
.footer-contact p { font-size: 14px; padding: 4px 0; display: flex; gap: 8px; }
.footer-contact .ic { flex-shrink: 0; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 20px; }
.footer-col ul li { padding: 7px 0; }
.footer-col ul li a { font-size: 14px; color: var(--text-light-mute); transition: all .25s; }
.footer-col ul li a:hover { color: var(--orange-light); padding-left: 4px; }
.footer-qr { text-align: center; }
.qr-box {
    width: 130px; height: 130px; background: #fff; border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center; margin: 0 auto 12px;
    color: var(--text-dark); font-size: 15px; font-weight: 700; text-align: center;
}
.footer-qr p { font-size: 13px; }
.footer-bottom { border-top: 1px solid var(--border-dark); padding: 22px 0; }
.footer-bottom-inner {
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
    font-size: 13px; color: rgba(255,255,255,.5);
}
.footer-bottom-inner a:hover { color: var(--orange-light); }

/* ==========================================================================
   右侧悬浮咨询条
   ========================================================================== */
.float-bar {
    position: fixed; right: 20px; top: 50%; transform: translateY(-50%); z-index: 900;
    display: flex; flex-direction: column; gap: 12px;
}
.float-item {
    width: 60px; height: 60px; border-radius: var(--radius-md); background: #fff;
    box-shadow: var(--shadow-md); display: flex; flex-direction: column;
    align-items: center; justify-content: center; gap: 2px; transition: all .3s;
    color: var(--text-body); font-size: 12px;
}
.float-item:hover { background: var(--orange); color: #fff; transform: scale(1.08); }
.float-ic { font-size: 22px; line-height: 1; }
#floatTop { opacity: 0; visibility: hidden; transform: scale(.6); transition: all .3s; }
.float-bar.show-top #floatTop { opacity: 1; visibility: visible; transform: scale(1); }

/* ==========================================================================
   滚动入场动画
   ========================================================================== */
[data-reveal] {
    opacity: 0; transform: translateY(40px); transition: opacity .7s ease, transform .7s ease;
}
[data-reveal].revealed { opacity: 1; transform: translateY(0); }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1024px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .adv-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-top { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
    :root { --header-h: 64px; }
    .section { padding: 64px 0; }
    .container { padding: 0 18px; }

    /* 手机端导航 */
    .nav-toggle { display: flex; }
    .nav-menu {
        position: fixed; top: var(--header-h); left: 0; right: 0;
        background: rgba(15,15,30,.98); backdrop-filter: blur(16px);
        flex-direction: column; padding: 20px; gap: 0;
        transform: translateY(-120%); transition: transform .35s ease; visibility: hidden;
    }
    .nav-menu.open { transform: translateY(0); visibility: visible; }
    .nav-menu a { padding: 14px 16px; font-size: 17px; border-bottom: 1px solid var(--border-dark); }
    .nav-menu a::after { display: none; }
    .nav-phone { display: none; }
    .nav-action .btn-primary { display: none; }

    /* 手机端导航栏文字强制白色（深色抽屉） */
    .site-header.scrolled .logo-text,
    .site-header.scrolled .nav-menu a,
    .site-header.scrolled .nav-phone { color: inherit; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 12px; }
    .stat-item:nth-child(2)::after { display: none; }
    .services-grid, .adv-grid, .case-grid, .milestone-grid { grid-template-columns: 1fr; }
    .process-grid { grid-template-columns: repeat(2, 1fr); gap: 36px 20px; }
    .process-grid::before { display: none; }

    .about-feature, .contact-wrap { grid-template-columns: 1fr; gap: 36px; }
    .cta-band { padding: 40px 28px; flex-direction: column; text-align: center; }
    .footer-top { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }

    .float-bar { right: 12px; }
    .float-item { width: 50px; height: 50px; }
    .float-tx { display: none; }

    .form-grid-2 { grid-template-columns: 1fr; }
    .contact-form { padding: 28px 22px; }
}

@media (max-width: 480px) {
    .hero-actions .btn { flex: 1; min-width: 140px; }
    .hero-actions { width: 100%; }
}