/* ============================================================
   中印（重庆）广告有限公司 · 官网主样式
   风格：深蓝 + 金色 · 大气专业
   ============================================================ */

/* ================= 变量 ================= */
:root {
    --ink-900: #050b14;
    --ink-800: #0a1628;
    --ink-700: #102544;
    --navy: #14325f;
    --blue: #1e4d8c;
    --blue-2: #2f6bb5;
    --gold: #e3b23c;
    --gold-2: #f2cd6b;
    --gold-deep: #c8971f;
    --text: #161f2e;
    --muted: #66768d;
    --line: #e6ecf4;
    --bg-soft: #f4f7fb;
    --white: #ffffff;

    --ff: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', 'Source Han Sans SC', 'Noto Sans SC', sans-serif;
    --shadow-sm: 0 6px 18px rgba(10, 22, 40, .06);
    --shadow-md: 0 14px 40px rgba(10, 22, 40, .10);
    --shadow-lg: 0 26px 70px rgba(10, 22, 40, .16);
    --ease: cubic-bezier(.22, .61, .36, 1);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--ff);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text);
    background-color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: color .3s var(--ease), background .3s var(--ease); }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section { padding: 100px 0; position: relative; }
.bg-soft { background-color: var(--bg-soft); }
.text-center { text-align: center; }

::selection { background: var(--gold); color: var(--ink-800); }

/* ================= 按钮 ================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 34px;
    border-radius: 2px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: .5px;
    line-height: 1;
    cursor: pointer;
    transition: all .35s var(--ease);
    border: 1px solid transparent;
    white-space: nowrap;
}
.btn-lg { padding: 17px 44px; font-size: 16px; }
.btn-sm { padding: 10px 22px; font-size: 14px; }

.btn-gold { background: linear-gradient(135deg, var(--gold) 0%, var(--gold-deep) 100%); color: #1a1206; box-shadow: 0 10px 26px rgba(227, 178, 60, .32); }
.btn-gold:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(227, 178, 60, .45); }

.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--blue); transform: translateY(-3px); box-shadow: var(--shadow-md); }

.btn-ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .5); }
.btn-ghost:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }

.btn-outline { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; transform: translateY(-3px); }

/* ================= 顶部导航 ================= */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all .4s var(--ease);
    background: linear-gradient(to bottom, rgba(5, 11, 20, .55), rgba(5, 11, 20, 0));
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

/* 品牌 */
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
    width: 46px; height: 46px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-deep) 100%);
    color: #1a1206;
    font-size: 17px;
    font-weight: 800;
    letter-spacing: 1px;
    border-radius: 3px;
    box-shadow: 0 6px 18px rgba(227, 178, 60, .35);
    flex-shrink: 0;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 20px; font-weight: 800; letter-spacing: 2px; color: #fff; }
.brand-text em { font-size: 9px; font-style: normal; letter-spacing: 2.5px; color: rgba(255, 255, 255, .6); }

/* 导航菜单 */
.main-nav ul { display: flex; align-items: center; gap: 34px; }
.nav-link {
    position: relative;
    font-size: 15.5px;
    font-weight: 500;
    color: rgba(255, 255, 255, .92);
    padding: 6px 0;
    letter-spacing: .5px;
}
.nav-link::after {
    content: '';
    position: absolute;
    left: 50%; bottom: -2px;
    width: 0; height: 2px;
    background: var(--gold);
    transform: translateX(-50%);
    transition: width .35s var(--ease);
}
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-link:hover, .nav-link.active { color: #fff; }

.header-cta {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 11px 20px;
    border: 1px solid rgba(255, 255, 255, .35);
    border-radius: 2px;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: .5px;
    transition: all .35s var(--ease);
}
.header-cta svg { width: 17px; height: 17px; }
.header-cta:hover { background: var(--gold); border-color: var(--gold); color: #1a1206; }

/* 滚动后（实心白底） */
.site-header.is-scrolled {
    background: rgba(255, 255, 255, .97);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 30px rgba(10, 22, 40, .09);
    padding: 12px 0;
}
.site-header.is-scrolled .brand-text strong { color: var(--ink-800); }
.site-header.is-scrolled .brand-text em { color: var(--muted); }
.site-header.is-scrolled .nav-link { color: var(--text); }
.site-header.is-scrolled .nav-link:hover,
.site-header.is-scrolled .nav-link.active { color: var(--navy); }
.site-header.is-scrolled .header-cta { color: var(--navy); border-color: rgba(20, 50, 95, .3); }
.site-header.is-scrolled .header-cta:hover { background: var(--navy); border-color: var(--navy); color: #fff; }
.site-header.is-scrolled .nav-toggle span { background: var(--ink-800); }

/* 汉堡按钮 */
.nav-toggle { display: none; width: 30px; height: 22px; position: relative; z-index: 1002; }
.nav-toggle span {
    position: absolute; left: 0;
    width: 100%; height: 2px;
    background: #fff;
    transition: all .3s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 0; }
.nav-toggle span:nth-child(2) { top: 10px; }
.nav-toggle span:nth-child(3) { top: 20px; }
.nav-toggle.is-active span:nth-child(1) { top: 10px; transform: rotate(45deg); }
.nav-toggle.is-active span:nth-child(2) { opacity: 0; }
.nav-toggle.is-active span:nth-child(3) { top: 10px; transform: rotate(-45deg); }

/* ================= Hero 轮播 ================= */
.hero {
    position: relative;
    height: 100vh;
    min-height: 660px;
    overflow: hidden;
    background: var(--ink-900);
}
.hero-slides { position: absolute; inset: 0; }
.hero-slide {
    position: absolute; inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1s var(--ease), visibility 1s;
}
.hero-slide.is-active { opacity: 1; visibility: visible; }

.hero-bg {
    position: absolute; inset: 0;
    background-color: var(--ink-800);
    background-size: cover;
    background-position: center;
    transform: scale(1.06);
    transition: transform 7s linear;
}
.hero-slide.is-active .hero-bg { transform: scale(1); }
.hero-bg::after {
    content: '';
    position: absolute; inset: 0;
    background:
        linear-gradient(100deg, rgba(5, 11, 20, .94) 0%, rgba(10, 22, 40, .82) 42%, rgba(10, 22, 40, .45) 100%),
        radial-gradient(circle at 78% 30%, rgba(227, 178, 60, .18), transparent 45%);
}

/* 网格装饰线（广告设计感） */
.hero-grid-lines {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
    background-size: 90px 90px;
    mask-image: radial-gradient(circle at 30% 50%, #000 0%, transparent 75%);
    -webkit-mask-image: radial-gradient(circle at 30% 50%, #000 0%, transparent 75%);
}

.hero-inner {
    position: relative;
    z-index: 3;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    max-width: 1200px;
}
.hero-eyebrow {
    display: inline-block;
    position: relative;
    padding-left: 54px;
    margin-bottom: 26px;
    font-size: 15px;
    letter-spacing: 3px;
    color: var(--gold-2);
    font-weight: 600;
    opacity: 0;
    transform: translateY(24px);
}
.hero-eyebrow::before {
    content: '';
    position: absolute; left: 0; top: 50%;
    width: 40px; height: 2px;
    background: var(--gold);
    transform: translateY(-50%);
}
.hero-inner h1 {
    font-size: 60px;
    line-height: 1.18;
    font-weight: 800;
    color: #fff;
    letter-spacing: 1px;
    margin-bottom: 24px;
    opacity: 0;
    transform: translateY(30px);
}
.hero-inner h1 .gold { color: var(--gold-2); }
.hero-desc {
    font-size: 19px;
    color: rgba(255, 255, 255, .8);
    letter-spacing: 1px;
    margin-bottom: 40px;
    opacity: 0;
    transform: translateY(30px);
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; opacity: 0; transform: translateY(30px); }

/* 逐项进入动画 */
.hero-slide.is-active .hero-eyebrow { animation: heroUp .8s .25s var(--ease) forwards; }
.hero-slide.is-active .hero-inner h1 { animation: heroUp .9s .4s var(--ease) forwards; }
.hero-slide.is-active .hero-desc { animation: heroUp .9s .55s var(--ease) forwards; }
.hero-slide.is-active .hero-actions { animation: heroUp .9s .7s var(--ease) forwards; }
@keyframes heroUp { to { opacity: 1; transform: translateY(0); } }

/* 控制区 */
.hero-controls { position: absolute; left: 0; right: 0; bottom: 48px; z-index: 5; }
.hero-controls-inner { display: flex; align-items: center; gap: 26px; }
.hero-arrow {
    width: 52px; height: 52px;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid rgba(255, 255, 255, .35);
    color: #fff;
    border-radius: 50%;
    transition: all .35s var(--ease);
    flex-shrink: 0;
}
.hero-arrow svg { width: 22px; height: 22px; }
.hero-arrow:hover { background: var(--gold); border-color: var(--gold); color: #1a1206; }

.hero-dots { display: flex; gap: 26px; flex: 1; }
.hero-dot {
    display: flex; align-items: center; gap: 10px;
    color: rgba(255, 255, 255, .5);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    transition: color .35s var(--ease);
}
.hero-dot i { display: block; width: 30px; height: 2px; background: rgba(255, 255, 255, .3); transition: all .45s var(--ease); }
.hero-dot.is-active { color: var(--gold-2); }
.hero-dot.is-active i { width: 56px; background: var(--gold); }
.hero-dot:hover { color: #fff; }

.hero-scroll {
    position: absolute;
    right: 40px; bottom: 48px;
    z-index: 5;
    display: flex; align-items: center; gap: 12px;
    font-size: 13px;
    letter-spacing: 2px;
    color: rgba(255, 255, 255, .7);
    writing-mode: horizontal-tb;
}
.hero-scroll span {
    width: 42px; height: 42px;
    border: 1px solid rgba(255, 255, 255, .35);
    border-radius: 50%;
    position: relative;
}
.hero-scroll span::after {
    content: '';
    position: absolute; left: 50%; top: 50%;
    width: 7px; height: 7px;
    border-right: 2px solid #fff;
    border-bottom: 2px solid #fff;
    transform: translate(-50%, -70%) rotate(45deg);
    animation: scrollDown 1.6s infinite;
}
@keyframes scrollDown {
    0%, 100% { transform: translate(-50%, -80%) rotate(45deg); opacity: .4; }
    50% { transform: translate(-50%, -40%) rotate(45deg); opacity: 1; }
}
.hero-scroll:hover { color: var(--gold-2); }

/* ================= 数据统计 ================= */
.stats {
    background: var(--ink-800);
    border-top: 1px solid rgba(255, 255, 255, .06);
    padding: 54px 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat-item { text-align: center; position: relative; }
.stat-item:not(:last-child)::after {
    content: '';
    position: absolute; right: 0; top: 50%;
    width: 1px; height: 54px;
    background: rgba(255, 255, 255, .1);
    transform: translateY(-50%);
}
.stat-value { display: flex; align-items: baseline; justify-content: center; gap: 2px; }
.stat-num { font-size: 46px; font-weight: 800; color: var(--gold-2); line-height: 1; letter-spacing: -1px; }
.stat-value i { font-style: normal; font-size: 24px; font-weight: 700; color: var(--gold); }
.stat-item p { margin-top: 10px; font-size: 14.5px; color: rgba(255, 255, 255, .62); letter-spacing: 1px; }

/* ================= 区块标题 ================= */
.section-head { text-align: center; max-width: 720px; margin: 0 auto 62px; }
.section-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--gold-deep);
    margin-bottom: 16px;
    position: relative;
    padding: 0 12px;
}
.section-eyebrow::before, .section-eyebrow::after {
    content: ''; position: absolute; top: 50%; width: 26px; height: 1px; background: var(--gold);
}
.section-eyebrow::before { left: -24px; }
.section-eyebrow::after { right: -24px; }
.section-title { font-size: 38px; font-weight: 800; color: var(--ink-800); letter-spacing: 1px; line-height: 1.3; }
.section-title.left { text-align: left; }
.section-sub { margin-top: 16px; font-size: 16px; color: var(--muted); }

.section-head.light .section-title { color: #fff; }
.section-head.light .section-sub { color: rgba(255, 255, 255, .65); }
.section-head.light .section-eyebrow { color: var(--gold-2); }

.section-more { text-align: center; margin-top: 54px; }

/* ================= 深色区块通用 ================= */
.dark { background: var(--ink-800); color: #fff; overflow: hidden; }
.dark .section-title { color: #fff; }
.glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5; pointer-events: none; }
.glow-a { width: 420px; height: 420px; background: rgba(30, 77, 140, .55); top: -120px; right: -100px; }
.glow-b { width: 360px; height: 360px; background: rgba(227, 178, 60, .18); bottom: -140px; left: -110px; }

/* ================= 图片占位框 ================= */
.img-box {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--ink-700) 0%, var(--blue) 100%);
    border-radius: 2px;
}
.img-box::before {
    content: '';
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
    background-size: 26px 26px;
}
.img-box img {
    position: relative;
    z-index: 2;
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .7s var(--ease), opacity .5s;
}
.img-box img.is-broken { display: none; }
.ph {
    position: absolute;
    z-index: 1;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: rgba(255, 255, 255, .55);
    font-size: 12.5px;
    letter-spacing: .5px;
    padding: 0 14px;
    text-align: center;
}
.ph svg { width: 34px; height: 34px; stroke: rgba(242, 205, 107, .75); }
.ph em { font-style: normal; }
/* 仅在图片确实加载成功后才提示可点击放大 */
.img-box.is-ready { cursor: zoom-in; }

/* ================= 核心业务 ================= */
.business-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.biz-card {
    position: relative;
    padding: 44px 30px 36px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 3px;
    overflow: hidden;
    transition: all .45s var(--ease);
}
.biz-card::before {
    content: '';
    position: absolute; left: 0; top: 0;
    width: 100%; height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--gold-deep));
    transform: scaleX(0); transform-origin: left;
    transition: transform .45s var(--ease);
}
.biz-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); border-color: transparent; }
.biz-card:hover::before { transform: scaleX(1); }
.biz-num {
    position: absolute; right: 26px; top: 26px;
    font-size: 44px; font-weight: 800; line-height: 1;
    color: rgba(20, 50, 95, .07);
    transition: color .45s var(--ease);
}
.biz-card:hover .biz-num { color: rgba(227, 178, 60, .22); }
.biz-icon {
    width: 62px; height: 62px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 3px;
    background: linear-gradient(135deg, rgba(20, 50, 95, .07), rgba(30, 77, 140, .12));
    color: var(--navy);
    margin-bottom: 24px;
    transition: all .45s var(--ease);
}
.biz-icon svg { width: 30px; height: 30px; }
.biz-card:hover .biz-icon { background: linear-gradient(135deg, var(--gold), var(--gold-deep)); color: #1a1206; }
.biz-card h3 { font-size: 20px; color: var(--ink-800); margin-bottom: 14px; letter-spacing: .5px; }
.biz-card p { font-size: 14.5px; color: var(--muted); line-height: 1.85; margin-bottom: 22px; }
.biz-link { font-size: 14px; font-weight: 700; color: var(--navy); letter-spacing: .5px; display: inline-flex; align-items: center; gap: 6px; }
.biz-link span { transition: transform .35s var(--ease); }
.biz-link:hover { color: var(--gold-deep); }
.biz-link:hover span { transform: translateX(5px); }

/* ================= 公司优势 ================= */
.advantages { background: var(--bg-soft); }
.adv-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 70px; align-items: center; }
.adv-media { position: relative; }
.adv-media .img-box { aspect-ratio: 4 / 3.4; box-shadow: var(--shadow-lg); }
.adv-media .img-box img { transition: transform 7s var(--ease); }
.adv-media:hover .img-box img { transform: scale(1.05); }
.adv-badge {
    position: absolute; right: -22px; bottom: 34px;
    background: linear-gradient(135deg, var(--navy), var(--blue));
    color: #fff;
    padding: 24px 30px;
    border-radius: 3px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    border-left: 4px solid var(--gold);
}
.adv-badge strong { display: block; font-size: 42px; font-weight: 800; line-height: 1; color: var(--gold-2); }
.adv-badge sup { font-size: 22px; }
.adv-badge span { font-size: 13px; letter-spacing: 1px; opacity: .85; }
.adv-content .section-eyebrow { padding-left: 0; }
.adv-content .section-eyebrow::before, .adv-content .section-eyebrow::after { display: none; }
.adv-lead { color: var(--muted); font-size: 16px; margin: 20px 0 36px; }
.adv-list { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 34px; }
.adv-list li { display: flex; gap: 16px; }
.adv-idx {
    font-size: 18px; font-weight: 800; color: var(--gold-deep);
    line-height: 1.4; flex-shrink: 0;
    font-family: 'Georgia', serif;
}
.adv-list h4 { font-size: 17px; color: var(--ink-800); margin-bottom: 6px; }
.adv-list p { font-size: 14px; color: var(--muted); line-height: 1.75; }

/* ================= 办公场地画廊 ================= */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 220px; gap: 18px; }
.gallery .img-box { cursor: pointer; height: 100%; }
.gallery .img-box:hover img { transform: scale(1.08); }
.gallery .img-box::after {
    content: '';
    position: absolute; inset: 0; z-index: 3;
    background: rgba(10, 22, 40, 0);
    transition: background .4s var(--ease);
}
.gallery .img-box:hover::after { background: rgba(10, 22, 40, .28); }
.gallery-office .img-box:nth-child(1) { grid-column: span 2; grid-row: span 2; }
.gallery-office .img-box:nth-child(4) { grid-column: span 2; }

/* ================= 机器设备 ================= */
.equip-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.equip-card { background: #fff; border: 1px solid var(--line); border-radius: 3px; overflow: hidden; transition: all .45s var(--ease); }
.equip-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.equip-card .img-box { aspect-ratio: 4 / 3.2; }
.equip-card:hover .img-box img { transform: scale(1.08); }
.equip-info { padding: 26px 24px 30px; }
.equip-info h3 { font-size: 18px; color: var(--ink-800); margin-bottom: 10px; position: relative; padding-left: 16px; }
.equip-info h3::before { content: ''; position: absolute; left: 0; top: 50%; width: 4px; height: 18px; background: var(--gold); transform: translateY(-50%); }
.equip-info p { font-size: 14px; color: var(--muted); line-height: 1.8; }

/* ================= 安装作业 ================= */
.install { background: var(--bg-soft); }
.install-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.install-card { display: flex; background: #fff; border-radius: 3px; overflow: hidden; box-shadow: var(--shadow-sm); transition: all .45s var(--ease); }
.install-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.install-card .img-box { width: 46%; flex-shrink: 0; min-height: 210px; }
.install-card:hover .img-box img { transform: scale(1.08); }
.install-info { padding: 34px 30px; display: flex; flex-direction: column; justify-content: center; }
.install-idx { font-family: 'Georgia', serif; font-size: 15px; font-weight: 700; color: var(--gold-deep); letter-spacing: 2px; margin-bottom: 12px; }
.install-info h3 { font-size: 19px; color: var(--ink-800); margin-bottom: 10px; }
.install-info p { font-size: 14px; color: var(--muted); line-height: 1.8; }

/* ================= 合作客户 ================= */
.client-groups { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 50px; }
.client-group {
    padding: 34px 30px;
    background: rgba(255, 255, 255, .04);
    border: 1px solid rgba(255, 255, 255, .09);
    border-radius: 3px;
    transition: all .4s var(--ease);
}
.client-group:hover { background: rgba(255, 255, 255, .07); border-color: rgba(227, 178, 60, .4); transform: translateY(-5px); }
.client-group h3 { display: flex; align-items: center; gap: 12px; font-size: 19px; color: #fff; margin-bottom: 12px; }
.client-group h3 svg { width: 26px; height: 26px; stroke: var(--gold-2); }
.client-group p { font-size: 14.5px; color: rgba(255, 255, 255, .62); line-height: 1.8; }

.client-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255, 255, 255, .09); border: 1px solid rgba(255, 255, 255, .09); }
.client-logo {
    display: flex; align-items: center; justify-content: center;
    min-height: 96px;
    background: var(--ink-800);
    color: rgba(255, 255, 255, .5);
    font-size: 15px;
    letter-spacing: 1px;
    text-align: center;
    padding: 12px;
    transition: all .4s var(--ease);
}
.client-logo:hover { background: var(--ink-700); color: var(--gold-2); }
.client-note { margin-top: 26px; text-align: center; font-size: 13px; color: rgba(255, 255, 255, .38); letter-spacing: .5px; }

/* ================= 精选案例 ================= */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.case-card { background: #fff; border-radius: 3px; overflow: hidden; box-shadow: var(--shadow-sm); transition: all .45s var(--ease); }
.case-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.case-card .img-box { aspect-ratio: 4 / 3; }
.case-card:hover .img-box img { transform: scale(1.08); }
.case-info { padding: 24px 26px 28px; }
.case-tag {
    display: inline-block;
    padding: 4px 12px;
    font-size: 12px;
    letter-spacing: .5px;
    color: var(--gold-deep);
    background: rgba(227, 178, 60, .12);
    border-radius: 2px;
    margin-bottom: 12px;
}
.case-info h3 { font-size: 17px; color: var(--ink-800); margin-bottom: 8px; }
.case-info p { font-size: 13.5px; color: var(--muted); line-height: 1.75; }

/* ================= 服务流程 ================= */
.flow-steps { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; position: relative; }
.flow-step { text-align: center; position: relative; padding-top: 10px; }
.flow-step::before {
    content: '';
    position: absolute; top: 32px; left: 60%; width: 80%; height: 1px;
    background: repeating-linear-gradient(90deg, var(--line) 0 6px, transparent 6px 12px);
}
.flow-step:last-child::before { display: none; }
.step-num {
    display: inline-flex; align-items: center; justify-content: center;
    width: 54px; height: 54px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--navy);
    color: var(--navy);
    font-weight: 800;
    font-size: 17px;
    margin-bottom: 18px;
    position: relative; z-index: 2;
    transition: all .4s var(--ease);
}
.flow-step:hover .step-num { background: var(--navy); color: #fff; transform: translateY(-4px); box-shadow: 0 12px 24px rgba(20, 50, 95, .25); }
.flow-step h3 { font-size: 16px; color: var(--ink-800); margin-bottom: 6px; }
.flow-step p { font-size: 13px; color: var(--muted); }

/* ================= CTA ================= */
.cta { position: relative; background: linear-gradient(120deg, var(--navy) 0%, var(--ink-800) 100%); padding: 74px 0; overflow: hidden; }
.cta::before {
    content: '';
    position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
    background-size: 60px 60px;
}
.cta-inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.cta-inner h2 { font-size: 34px; color: #fff; letter-spacing: 1px; margin-bottom: 12px; }
.cta-inner p { font-size: 16px; color: rgba(255, 255, 255, .7); }
.cta-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ================= 底部 ================= */
.site-footer { background: var(--ink-900); color: rgba(255, 255, 255, .7); padding: 76px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 44px; padding-bottom: 56px; }
.footer-brand .brand { margin-bottom: 22px; }
.footer-brand p { font-size: 14px; line-height: 1.9; color: rgba(255, 255, 255, .55); margin-bottom: 16px; }
.footer-slogan { color: var(--gold-2) !important; letter-spacing: 3px; font-weight: 600; }
.footer-col h4 { font-size: 16px; color: #fff; margin-bottom: 22px; position: relative; padding-bottom: 12px; }
.footer-col h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 30px; height: 2px; background: var(--gold); }
.footer-links li { margin-bottom: 12px; }
.footer-links a { font-size: 14px; color: rgba(255, 255, 255, .55); }
.footer-links a:hover { color: var(--gold-2); padding-left: 5px; }
.footer-contact li { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 14px; font-size: 14px; color: rgba(255, 255, 255, .55); }
.footer-contact li svg { width: 18px; height: 18px; stroke: var(--gold); flex-shrink: 0; margin-top: 3px; }
.footer-contact a:hover { color: var(--gold-2); }
.footer-qr { display: flex; align-items: center; gap: 14px; margin-top: 20px; }
.qr-box {
    width: 84px; height: 84px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 3px;
    font-size: 12px; color: rgba(255, 255, 255, .5);
    flex-shrink: 0;
}
.footer-qr p { font-size: 12.5px; line-height: 1.6; color: rgba(255, 255, 255, .5); }
.footer-bottom {
    display: flex; align-items: center; justify-content: space-between;
    gap: 16px; flex-wrap: wrap;
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, .08);
    font-size: 13px;
    color: rgba(255, 255, 255, .45);
}
.footer-meta { display: flex; gap: 10px; align-items: center; }
.footer-meta a:hover { color: var(--gold-2); }

/* ================= Lightbox ================= */
.lightbox {
    position: fixed; inset: 0; z-index: 2000;
    background: rgba(5, 11, 20, .94);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden;
    transition: opacity .35s var(--ease), visibility .35s;
    padding: 40px;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox-img { max-width: 92%; max-height: 88%; object-fit: contain; box-shadow: var(--shadow-lg); }
.lightbox-close {
    position: absolute; top: 28px; right: 34px;
    width: 48px; height: 48px;
    font-size: 30px; line-height: 1;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .3);
    border-radius: 50%;
    transition: all .3s var(--ease);
}
.lightbox-close:hover { background: var(--gold); border-color: var(--gold); color: #1a1206; transform: rotate(90deg); }

/* ================= 返回顶部 ================= */
.back-top {
    position: fixed; right: 28px; bottom: 28px; z-index: 900;
    width: 50px; height: 50px;
    display: flex; align-items: center; justify-content: center;
    background: var(--navy);
    color: #fff;
    border-radius: 3px;
    box-shadow: var(--shadow-md);
    opacity: 0; visibility: hidden; transform: translateY(16px);
    transition: all .4s var(--ease);
}
.back-top svg { width: 22px; height: 22px; }
.back-top.is-show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--gold); color: #1a1206; }

/* ================= 内页页头 ================= */
.page-header {
    position: relative;
    padding: 190px 0 90px;
    background: linear-gradient(120deg, var(--ink-800) 0%, var(--navy) 100%);
    color: #fff;
    overflow: hidden;
    text-align: center;
}
.page-header::before {
    content: '';
    position: absolute; inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
    background-size: 70px 70px;
    mask-image: radial-gradient(circle at 50% 0%, #000, transparent 80%);
    -webkit-mask-image: radial-gradient(circle at 50% 0%, #000, transparent 80%);
}
.page-header::after {
    content: '';
    position: absolute; left: 50%; bottom: -160px;
    width: 500px; height: 320px;
    transform: translateX(-50%);
    background: radial-gradient(circle, rgba(227, 178, 60, .22), transparent 70%);
    filter: blur(50px);
}
.page-header .container { position: relative; z-index: 2; }
.page-header h1 { font-size: 44px; font-weight: 800; letter-spacing: 2px; margin-bottom: 18px; }
.breadcrumb { display: inline-flex; align-items: center; gap: 12px; font-size: 14px; color: rgba(255, 255, 255, .65); }
.breadcrumb a:hover { color: var(--gold-2); }
.breadcrumb span { color: rgba(255, 255, 255, .4); }

/* ================= 通用内页组件 ================= */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-content .section-title { margin-bottom: 24px; }
.lead { font-size: 18px; color: var(--ink-800); margin-bottom: 18px; font-weight: 600; }
.about-content > p { color: var(--muted); margin-bottom: 14px; }
.about-stats { display: flex; gap: 44px; margin-top: 38px; padding-top: 30px; border-top: 1px solid var(--line); }
.stat-item2 { text-align: center; }
.stat-number { display: block; font-size: 36px; font-weight: 800; color: var(--navy); line-height: 1.1; }
.stat-label { font-size: 14px; color: var(--muted); }
.about-image { aspect-ratio: 4 / 3.2; }
.about-image.img-box { border-radius: 3px; box-shadow: var(--shadow-lg); }

/* 时间线 */
.timeline-container { position: relative; max-width: 820px; margin: 0 auto; }
.timeline-container::before { content: ''; position: absolute; top: 0; bottom: 0; left: 50%; width: 2px; transform: translateX(-50%); background: var(--line); }
.timeline-item { position: relative; width: 50%; padding: 20px 46px; }
.timeline-item:nth-child(odd) { left: 0; text-align: right; }
.timeline-item:nth-child(even) { left: 50%; }
.timeline-year {
    position: absolute; top: 22px;
    width: 66px; height: 66px;
    display: flex; align-items: center; justify-content: center;
    background: var(--navy); color: #fff;
    border-radius: 50%; font-weight: 800; font-size: 15px;
    border: 4px solid #fff; box-shadow: var(--shadow-sm);
}
.timeline-item:nth-child(odd) .timeline-year { right: -33px; }
.timeline-item:nth-child(even) .timeline-year { left: -33px; }
.timeline-content h3 { font-size: 18px; color: var(--ink-800); margin-bottom: 8px; }
.timeline-content p { font-size: 14px; color: var(--muted); }

/* 理念 */
.philosophy-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.philosophy-card { text-align: center; padding: 44px 30px; background: #fff; border: 1px solid var(--line); border-radius: 3px; transition: all .45s var(--ease); }
.philosophy-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); border-color: transparent; }
.philosophy-card h3 { font-size: 21px; color: var(--navy); margin-bottom: 14px; }
.philosophy-card h3::after { content: ''; display: block; width: 34px; height: 2px; background: var(--gold); margin: 14px auto 0; }
.philosophy-card p { font-size: 14px; color: var(--muted); line-height: 1.85; }

/* 服务详情 */
.service-category { margin-bottom: 20px; }
.category-title { font-size: 26px; color: var(--ink-800); margin-bottom: 34px; padding-left: 18px; position: relative; }
.category-title::before { content: ''; position: absolute; left: 0; top: 50%; width: 5px; height: 26px; background: linear-gradient(var(--gold), var(--gold-deep)); transform: translateY(-50%); }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.service-detail-card { padding: 34px 32px; background: #fff; border: 1px solid var(--line); border-radius: 3px; transition: all .4s var(--ease); }
.service-detail-card:hover { box-shadow: var(--shadow-md); transform: translateY(-5px); border-color: transparent; }
.service-detail-card h3 { font-size: 18px; color: var(--ink-800); margin-bottom: 12px; }
.service-detail-card p { font-size: 14.5px; color: var(--muted); line-height: 1.85; }

/* 筛选 */
.filter-tabs { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-bottom: 44px; }
.filter-btn { padding: 11px 26px; border: 1px solid var(--line); background: #fff; color: var(--ink-800); border-radius: 2px; font-size: 14.5px; transition: all .35s var(--ease); }
.filter-btn:hover { border-color: var(--navy); color: var(--navy); }
.filter-btn.active { background: var(--navy); color: #fff; border-color: var(--navy); }

/* 分页 */
.pagination { display: flex; justify-content: center; gap: 10px; margin-top: 54px; }
.page-link { min-width: 44px; height: 44px; display: inline-flex; align-items: center; justify-content: center; padding: 0 14px; border: 1px solid var(--line); background: #fff; color: var(--ink-800); border-radius: 2px; transition: all .3s var(--ease); }
.page-link:hover, .page-link.active { background: var(--navy); color: #fff; border-color: var(--navy); }

/* 新闻 */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card { background: #fff; border-radius: 3px; overflow: hidden; box-shadow: var(--shadow-sm); transition: all .45s var(--ease); }
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.news-card .img-box { aspect-ratio: 16 / 10; }
.news-card:hover .img-box img { transform: scale(1.08); }
.news-content { padding: 24px 26px 28px; }
.news-meta { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.news-date { font-size: 13px; color: var(--muted); }
.news-tag { font-size: 12px; color: var(--gold-deep); background: rgba(227, 178, 60, .12); padding: 3px 10px; border-radius: 2px; }
.news-content h3 { font-size: 17px; color: var(--ink-800); margin-bottom: 10px; line-height: 1.5; }
.news-content p { font-size: 14px; color: var(--muted); line-height: 1.75; margin-bottom: 14px; }
.read-more { font-size: 14px; font-weight: 700; color: var(--navy); }
.read-more:hover { color: var(--gold-deep); }

/* 联系我们 */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; margin-bottom: 60px; }
.contact-info h2, .contact-form h2 { font-size: 26px; color: var(--ink-800); margin-bottom: 30px; padding-left: 18px; position: relative; }
.contact-info h2::before, .contact-form h2::before { content: ''; position: absolute; left: 0; top: 50%; width: 5px; height: 24px; background: linear-gradient(var(--gold), var(--gold-deep)); transform: translateY(-50%); }
.contact-item { display: flex; gap: 18px; margin-bottom: 26px; }
.contact-icon { width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; background: var(--bg-soft); border-radius: 3px; color: var(--navy); flex-shrink: 0; }
.contact-icon svg { width: 22px; height: 22px; }
.contact-item h4 { font-size: 16px; color: var(--ink-800); margin-bottom: 4px; }
.contact-item p { font-size: 14.5px; color: var(--muted); }
.contact-item a:hover { color: var(--gold-deep); }
.qr-section { margin-top: 34px; padding-top: 30px; border-top: 1px solid var(--line); }
.qr-section h4 { font-size: 16px; color: var(--ink-800); margin-bottom: 16px; }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: 3px; padding: 40px; box-shadow: var(--shadow-sm); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; color: var(--ink-800); margin-bottom: 8px; font-weight: 600; }
.form-group label .req { color: #d64545; }
.form-group input, .form-group textarea {
    width: 100%; padding: 13px 16px;
    border: 1px solid var(--line); border-radius: 2px;
    font-size: 14.5px; font-family: inherit; color: var(--text);
    transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
    background: #fafcff;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--navy); background: #fff; box-shadow: 0 0 0 3px rgba(20, 50, 95, .08); }
.form-group textarea { resize: vertical; min-height: 130px; }
.form-success { text-align: center; padding: 50px 20px; display: none; }
.form-success svg { width: 64px; height: 64px; color: #2f9e5f; margin-bottom: 18px; }
.form-success p { font-size: 16px; color: var(--ink-800); }
.form-success .sub { font-size: 14px; color: var(--muted); margin-top: 8px; }

.map-section h3 { font-size: 22px; color: var(--ink-800); margin-bottom: 20px; }
.map-placeholder { height: 420px; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 3px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px; color: var(--muted); }
.map-placeholder svg { width: 48px; height: 48px; color: var(--navy); }
.map-addr { font-size: 19px; font-weight: 700; color: var(--navy); margin: 0; letter-spacing: .3px; }
.map-tip { font-size: 14px; margin: 0; }
.map-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 6px; }
@media (max-width: 560px) { .map-addr { font-size: 16px; } }

/* ================= 进场动画 ================= */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }