/* ============================================================
   深圳市顺心机械设备有限公司 — 共享样式系统
   配色沿用原站：深蓝 #1a1a2e / 品牌红 #e63946 / 金 #f0c040
   在原风格基础上升级：字阶层次、卡片质感、留白节奏、交互动效
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
    /* 品牌色 */
    --brand-red: #e63946;
    --brand-red-dark: #c0392b;
    --brand-gold: #f0c040;
    --brand-gold-light: #ffd700;

    /* 深色系（原站主色，保留） */
    --navy-900: #0d0d1a;
    --navy-800: #1a1a2e;
    --navy-700: #16213e;
    --navy-600: #0f3460;

    /* 中性色 */
    --ink: #1a1a2e;
    --body-text: #4a4a55;
    --text-muted: #767685;
    --line: #ebedf0;
    --line-soft: #f3f4f6;
    --surface: #ffffff;
    --surface-alt: #f8f9fa;

    /* 语义色 */
    --ok: #17916a;
    --warn: #d97706;

    /* 圆角与阴影 */
    --r-sm: 8px;
    --r-md: 12px;
    --r-lg: 16px;
    --r-xl: 20px;
    --shadow-xs: 0 1px 2px rgba(16, 24, 40, 0.05);
    --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.06);
    --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.08);
    --shadow-lg: 0 16px 48px rgba(16, 24, 40, 0.12);
    --shadow-brand: 0 8px 24px rgba(230, 57, 70, 0.28);
    --shadow-brand-lg: 0 14px 36px rgba(230, 57, 70, 0.38);

    /* 版心与节奏 */
    --container: 1200px;
    --gutter: 20px;
    --section-y: 88px;
    --nav-h: 68px;

    /* 动效 */
    --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
    --dur: 0.3s;
}

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

html {
    scroll-behavior: smooth;
    /* 锚点跳转时为吸顶导航预留空间 */
    scroll-padding-top: calc(var(--nav-h) + 16px);
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--body-text);
    line-height: 1.85;
    background: var(--surface);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

h1, h2, h3, h4, h5 {
    color: var(--ink);
    line-height: 1.35;
    font-weight: 700;
    /* 中文标题避免孤字换行 */
    text-wrap: balance;
}

p { text-wrap: pretty; }

:focus-visible {
    outline: 3px solid var(--brand-gold);
    outline-offset: 3px;
    border-radius: 4px;
}

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

.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 9999;
    background: var(--brand-red);
    color: #fff;
    padding: 12px 22px;
    border-radius: 0 0 var(--r-sm) 0;
    font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ============================================================
   顶部信息栏
   ============================================================ */
.top-bar {
    background: var(--navy-900);
    color: #9aa0b5;
    font-size: 13px;
    padding: 9px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}
.top-info { letter-spacing: 0.3px; display: flex; align-items: center; gap: 8px; }
.top-info svg { width: 15px; height: 15px; flex-shrink: 0; opacity: 0.8; }
.top-contact { display: flex; gap: 20px; align-items: center; }
.top-contact .divider { width: 1px; height: 12px; background: rgba(255, 255, 255, 0.16); }

.phone-link {
    color: var(--brand-gold);
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 0.3px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.phone-link svg { width: 13px; height: 13px; }
.phone-link:hover { color: var(--brand-gold-light); }

/* ============================================================
   主导航
   ============================================================ */
.main-nav {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    box-shadow: var(--shadow-xs);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow var(--dur) var(--ease);
}
.main-nav.fixed { box-shadow: var(--shadow-sm); }

.nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--nav-h);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: var(--brand-red);
    flex-shrink: 0;
    letter-spacing: -0.2px;
}
.logo-mark {
    width: 38px; height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--brand-red), var(--brand-red-dark));
    display: grid;
    place-items: center;
    color: #fff;
    box-shadow: var(--shadow-brand);
    flex-shrink: 0;
}
.logo-mark svg { width: 21px; height: 21px; }
.logo-text { white-space: nowrap; }
.logo-text small {
    display: block;
    font-size: 10px;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 0.6px;
    line-height: 1.2;
    margin-top: 1px;
}

.nav-list { display: flex; gap: 2px; }
.nav-list a {
    display: block;
    padding: 9px 13px;
    font-size: 15px;
    color: #3d3d4a;
    border-radius: var(--r-sm);
    transition: all var(--dur) var(--ease);
    white-space: nowrap;
    position: relative;
}
.nav-list a::after {
    content: "";
    position: absolute;
    left: 13px; right: 13px; bottom: 4px;
    height: 2px;
    background: var(--brand-red);
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform var(--dur) var(--ease);
}
.nav-list a:hover { color: var(--brand-red); }
.nav-list a:hover::after { transform: scaleX(1); }
.nav-list a.active { color: var(--brand-red); background: #fff5f5; font-weight: 600; }
.nav-list a.active::after { transform: scaleX(1); }

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    width: 40px;
    height: 40px;
    align-items: flex-end;
    justify-content: center;
}
.mobile-menu-btn span {
    display: block;
    width: 24px; height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: all var(--dur) var(--ease);
}
.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; width: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============================================================
   按钮
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 34px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    transition: all var(--dur) var(--ease);
    cursor: pointer;
    border: 1px solid transparent;
    line-height: 1.4;
}
.btn svg { width: 17px; height: 17px; flex-shrink: 0; }

.btn-primary {
    background: linear-gradient(135deg, var(--brand-red), var(--brand-red-dark));
    color: #fff;
    box-shadow: var(--shadow-brand);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-brand-lg);
    color: #fff;
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.45);
}
.btn-secondary:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

/* 浅色底上的描边按钮 */
.btn-outline {
    background: #fff;
    color: var(--brand-red);
    border-color: rgba(230, 57, 70, 0.28);
}
.btn-outline:hover {
    border-color: var(--brand-red);
    background: #fff5f5;
    color: var(--brand-red-dark);
}

.btn-sm { padding: 10px 22px; font-size: 14px; border-radius: var(--r-sm); }
.btn-lg { padding: 16px 42px; font-size: 17px; border-radius: 12px; }

/* ============================================================
   区块标题
   ============================================================ */
.section { padding: var(--section-y) 0; }
.section-alt { background: var(--surface-alt); }

.section-head { margin-bottom: 52px; }

.section-title {
    text-align: center;
    font-size: clamp(26px, 3.4vw, 34px);
    font-weight: 800;
    color: var(--ink);
    letter-spacing: -0.4px;
    position: relative;
    padding-bottom: 18px;
}
.section-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 56px;
    height: 3px;
    background: linear-gradient(90deg, var(--brand-red), var(--brand-gold));
    border-radius: 2px;
}
.section-desc {
    text-align: center;
    color: var(--text-muted);
    font-size: 16.5px;
    max-width: 760px;
    margin: 16px auto 0;
    line-height: 1.8;
}

/* 深色区块内的标题 */
.section-dark { color: #fff; }
.section-dark .section-title { color: #fff; }
.section-dark .section-title::after { background: linear-gradient(90deg, var(--brand-gold), var(--brand-red)); }
.section-dark .section-desc { color: #a8adc0; }

/* ============================================================
   首屏 Banner
   ============================================================ */
.hero {
    position: relative;
    background: linear-gradient(135deg, var(--navy-800) 0%, var(--navy-700) 52%, var(--navy-600) 100%);
    color: #fff;
    padding: 104px 0 92px;
    overflow: hidden;
    isolation: isolate;
}
/* 背景实拍图 + 深色蒙层，弱化处理以保证文字对比度 */
.hero-media {
    position: absolute;
    inset: 0;
    z-index: -2;
}
.hero-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.2;
    filter: saturate(0.7);
}
.hero::before {
    content: '';
    position: absolute;
    top: -45%;
    right: -18%;
    width: 620px; height: 620px;
    background: radial-gradient(circle, rgba(230, 57, 70, 0.22) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -32%;
    left: -8%;
    width: 440px; height: 440px;
    background: radial-gradient(circle, rgba(240, 192, 64, 0.14) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
}

.hero-content { position: relative; text-align: center; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.16);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 7px 18px;
    border-radius: 999px;
    font-size: 13.5px;
    color: var(--brand-gold);
    font-weight: 500;
    margin-bottom: 26px;
    letter-spacing: 0.3px;
}
.hero-badge .dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: #34d399;
    box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.2);
    animation: dotPulse 2.4s infinite;
}
@keyframes dotPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.35; }
}

.hero h1 {
    font-size: clamp(28px, 4.6vw, 46px);
    font-weight: 800;
    line-height: 1.25;
    color: #fff;
    letter-spacing: -0.8px;
    margin-bottom: 22px;
    text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}
.hero h1 em {
    font-style: normal;
    background: linear-gradient(100deg, var(--brand-gold), #ffe58a);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--brand-gold);
}

.hero-subtitle {
    font-size: clamp(15px, 1.6vw, 17.5px);
    color: #c3c8d8;
    max-width: 860px;
    margin: 0 auto 30px;
    line-height: 1.85;
}

.hero-brands {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 9px;
    margin-bottom: 38px;
}
.hero-brands span {
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.14);
    padding: 6px 17px;
    border-radius: 999px;
    font-size: 13.5px;
    color: var(--brand-gold);
    font-weight: 500;
    transition: all var(--dur) var(--ease);
}
.hero-brands span:hover {
    background: rgba(240, 192, 64, 0.14);
    border-color: rgba(240, 192, 64, 0.4);
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

/* 首屏数据条 */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--r-lg);
    overflow: hidden;
    max-width: 860px;
    margin: 0 auto;
}
.hero-stat {
    background: rgba(255, 255, 255, 0.03);
    padding: 22px 12px;
    transition: background var(--dur) var(--ease);
}
.hero-stat:hover { background: rgba(255, 255, 255, 0.07); }
.hero-stat b {
    display: block;
    font-size: clamp(22px, 2.6vw, 30px);
    font-weight: 800;
    color: var(--brand-gold);
    line-height: 1.2;
    letter-spacing: -0.5px;
}
.hero-stat b span { font-size: 15px; font-weight: 600; }
.hero-stat em {
    display: block;
    font-style: normal;
    font-size: 13px;
    color: #9aa0b5;
    margin-top: 4px;
}

/* ============================================================
   服务区域导航
   ============================================================ */
.area-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.area-item {
    background: var(--surface);
    border-radius: var(--r-md);
    padding: 24px 24px 22px;
    border: 1px solid var(--line);
    transition: all var(--dur) var(--ease);
    display: block;
    position: relative;
    overflow: hidden;
}
.area-item::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--brand-red), var(--brand-gold));
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--dur) var(--ease);
}
.area-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(230, 57, 70, 0.3);
}
.area-item:hover::before { transform: scaleY(1); }

.area-item h3 {
    font-size: 16.5px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}
.area-item h3 .go {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 400;
    opacity: 0;
    transform: translateX(-4px);
    transition: all var(--dur) var(--ease);
    flex-shrink: 0;
}
.area-item:hover h3 .go { opacity: 1; transform: translateX(0); color: var(--brand-red); }
.area-item p { font-size: 13.5px; color: var(--text-muted); line-height: 1.7; }

/* ============================================================
   公司介绍
   ============================================================ */
.about-content {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 64px;
    align-items: start;
}
.about-text h3 {
    font-size: 21px;
    color: var(--ink);
    margin: 30px 0 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.about-text h3::before {
    content: "";
    width: 4px; height: 18px;
    background: var(--brand-red);
    border-radius: 2px;
    flex-shrink: 0;
}
.about-text h3:first-child { margin-top: 0; }
.about-text p { color: var(--body-text); margin-bottom: 14px; font-size: 15.5px; }
.about-text strong { color: var(--brand-red); font-weight: 700; }

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    position: sticky;
    top: calc(var(--nav-h) + 24px);
}
.stat-item {
    background: linear-gradient(150deg, var(--navy-800), var(--navy-600));
    color: #fff;
    border-radius: var(--r-lg);
    padding: 30px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.stat-item::after {
    content: "";
    position: absolute;
    top: -40px; right: -40px;
    width: 110px; height: 110px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(240, 192, 64, 0.18), transparent 70%);
}
.stat-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.stat-number {
    font-size: 34px;
    font-weight: 800;
    color: var(--brand-gold);
    margin-bottom: 4px;
    letter-spacing: -1px;
    line-height: 1.2;
}
.stat-number span { font-size: 17px; font-weight: 600; }
.stat-label { font-size: 13.5px; color: #b8bdd0; }

/* ============================================================
   产品展示
   ============================================================ */
.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
    margin-bottom: 32px;
}
.product-card {
    background: var(--surface);
    border-radius: var(--r-lg);
    border: 1px solid var(--line);
    overflow: hidden;
    transition: all var(--dur) var(--ease);
    display: flex;
    flex-direction: column;
}
.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(230, 57, 70, 0.28);
}
.product-media {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--navy-800);
}
.product-media img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.5s var(--ease);
}
.product-card:hover .product-media img { transform: scale(1.05); }
.product-power {
    position: absolute;
    top: 14px; left: 14px;
    background: linear-gradient(135deg, var(--brand-red), var(--brand-red-dark));
    color: #fff;
    padding: 5px 15px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.3px;
    box-shadow: var(--shadow-brand);
}
.product-body { padding: 26px 28px 28px; display: flex; flex-direction: column; flex: 1; }
.product-card h3 { font-size: 19.5px; color: var(--ink); margin-bottom: 10px; }
.product-card > .product-body > p {
    color: var(--text-muted);
    font-size: 14.5px;
    margin-bottom: 16px;
    flex: 1;
}
.product-features { margin-bottom: 20px; display: grid; gap: 6px; }
.product-features li {
    font-size: 14px;
    color: var(--body-text);
    padding-left: 22px;
    position: relative;
    line-height: 1.7;
}
.product-features li::before {
    content: "";
    position: absolute;
    left: 0; top: 8px;
    width: 13px; height: 7px;
    border-left: 2px solid var(--brand-red);
    border-bottom: 2px solid var(--brand-red);
    transform: rotate(-45deg);
}
.product-card .btn-sm {
    background: var(--brand-red);
    color: #fff;
    align-self: flex-start;
}
.product-card .btn-sm:hover { background: var(--brand-red-dark); color: #fff; }

.power-list {
    background: var(--surface);
    border-radius: var(--r-md);
    padding: 22px 28px;
    border-left: 4px solid var(--brand-red);
    margin-bottom: 28px;
    box-shadow: var(--shadow-xs);
}
.power-list h3 { font-size: 15px; color: var(--ink); font-weight: 600; margin-bottom: 8px; }
.power-list p { font-size: 14.5px; color: var(--text-muted); line-height: 1.9; }

.product-types {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.type-card {
    background: var(--surface);
    border-radius: var(--r-md);
    padding: 30px 26px;
    border: 1px solid var(--line);
    transition: all var(--dur) var(--ease);
}
.type-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: rgba(230, 57, 70, 0.25); }
.type-icon {
    width: 54px; height: 54px;
    border-radius: 14px;
    background: linear-gradient(135deg, #fff5f5, #ffecec);
    color: var(--brand-red);
    display: grid;
    place-items: center;
    margin-bottom: 16px;
}
.type-icon svg { width: 27px; height: 27px; }
.type-card h4 { font-size: 17.5px; color: var(--ink); margin-bottom: 10px; }
.type-card p { font-size: 14.5px; color: var(--text-muted); }

/* ============================================================
   六大优势
   ============================================================ */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.advantage-card {
    background: var(--surface);
    border-radius: var(--r-lg);
    padding: 34px 30px;
    border: 1px solid var(--line);
    transition: all var(--dur) var(--ease);
    position: relative;
    overflow: hidden;
}
.advantage-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 4px;
    background: linear-gradient(90deg, var(--brand-red), var(--brand-gold));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease);
}
.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(230, 57, 70, 0.25);
}
.advantage-card:hover::before { transform: scaleX(1); }

.advantage-top {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
}
.advantage-icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    background: linear-gradient(135deg, #fff5f5, #ffecec);
    color: var(--brand-red);
    display: grid;
    place-items: center;
    flex-shrink: 0;
    transition: all var(--dur) var(--ease);
}
.advantage-icon svg { width: 26px; height: 26px; }
.advantage-card:hover .advantage-icon {
    background: linear-gradient(135deg, var(--brand-red), var(--brand-red-dark));
    color: #fff;
    box-shadow: var(--shadow-brand);
}
.advantage-num {
    display: inline-block;
    background: #fff5f5;
    color: var(--brand-red);
    padding: 3px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.4px;
}
.advantage-card h3 { font-size: 18.5px; color: var(--ink); margin-bottom: 10px; }
.advantage-card p { font-size: 14.5px; color: var(--text-muted); line-height: 1.8; }

/* ============================================================
   深色区块：出租优势
   ============================================================ */
.rental-benefits {
    background: linear-gradient(150deg, var(--navy-800) 0%, var(--navy-700) 55%, var(--navy-600) 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.rental-benefits::before {
    content: "";
    position: absolute;
    top: -30%; right: -12%;
    width: 520px; height: 520px;
    background: radial-gradient(circle, rgba(230, 57, 70, 0.16), transparent 70%);
    border-radius: 50%;
}
.benefit-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    position: relative;
}
.benefit-item {
    display: flex;
    gap: 18px;
    align-items: flex-start;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--r-md);
    padding: 26px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--dur) var(--ease);
}
.benefit-item:hover {
    background: rgba(255, 255, 255, 0.09);
    border-color: rgba(240, 192, 64, 0.35);
    transform: translateY(-3px);
}
.benefit-icon {
    width: 46px; height: 46px;
    border-radius: 12px;
    background: rgba(240, 192, 64, 0.14);
    color: var(--brand-gold);
    display: grid;
    place-items: center;
    flex-shrink: 0;
}
.benefit-icon svg { width: 23px; height: 23px; }
.benefit-item h3 { font-size: 17.5px; color: var(--brand-gold); margin-bottom: 5px; }
.benefit-item p { font-size: 14.5px; color: #b8bdd0; }

/* ============================================================
   租赁流程
   ============================================================ */
.process-steps {
    display: grid;
    grid-template-columns: 1fr 56px 1fr 56px 1fr;
    align-items: center;
    margin-bottom: 36px;
}
.step { text-align: center; position: relative; }
.step-num {
    width: 62px; height: 62px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--brand-red), var(--brand-red-dark));
    color: #fff;
    font-size: 23px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    box-shadow: 0 6px 18px rgba(230, 57, 70, 0.32);
    position: relative;
}
.step-num::after {
    content: "";
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 2px solid rgba(230, 57, 70, 0.22);
}
.step-content {
    background: var(--surface);
    border-radius: var(--r-md);
    padding: 26px 24px;
    border: 1px solid var(--line);
    height: 100%;
    transition: all var(--dur) var(--ease);
}
.step:hover .step-content {
    box-shadow: var(--shadow-md);
    border-color: rgba(230, 57, 70, 0.28);
    transform: translateY(-3px);
}
.step-content h3 { font-size: 18px; color: var(--ink); margin-bottom: 10px; }
.step-content p { font-size: 14.5px; color: var(--text-muted); }
.step-connector {
    height: 2px;
    background: linear-gradient(90deg, var(--brand-red), var(--brand-gold));
    position: relative;
}
.step-connector::after {
    content: "";
    position: absolute;
    right: -1px; top: 50%;
    transform: translateY(-50%);
    border-left: 7px solid var(--brand-gold);
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
}

.process-note {
    background: #fffbf0;
    border-radius: var(--r-md);
    padding: 20px 26px;
    border-left: 4px solid var(--brand-gold);
    max-width: 860px;
    margin: 0 auto;
}
.process-note p { font-size: 14px; color: #7a6435; line-height: 1.85; }

/* ============================================================
   客户案例
   ============================================================ */
.case-categories {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
    margin-bottom: 26px;
}
.case-category {
    background: var(--surface);
    border-radius: var(--r-md);
    padding: 30px;
    border: 1px solid var(--line);
    transition: all var(--dur) var(--ease);
}
.case-category:hover { box-shadow: var(--shadow-md); border-color: rgba(230, 57, 70, 0.22); }
.case-category h3 {
    font-size: 18px;
    color: var(--ink);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--line-soft);
    display: flex;
    align-items: center;
    gap: 9px;
}
.case-category h3 svg { width: 20px; height: 20px; color: var(--brand-red); flex-shrink: 0; }
.case-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.case-tags span {
    background: var(--surface-alt);
    border: 1px solid var(--line);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    color: #55555f;
    transition: all var(--dur) var(--ease);
}
.case-tags span:hover {
    border-color: var(--brand-red);
    color: var(--brand-red);
    background: #fff5f5;
}
.case-note {
    text-align: center;
    padding: 18px;
    color: var(--text-muted);
    font-size: 14px;
    max-width: 760px;
    margin: 0 auto;
}

/* ============================================================
   FAQ 手风琴
   ============================================================ */
.faq-list {
    max-width: 940px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.faq-item {
    background: var(--surface);
    border-radius: var(--r-md);
    border: 1px solid var(--line);
    overflow: hidden;
    transition: all var(--dur) var(--ease);
}
.faq-item:hover { border-color: rgba(230, 57, 70, 0.3); box-shadow: var(--shadow-sm); }
.faq-item.open { border-color: rgba(230, 57, 70, 0.35); box-shadow: var(--shadow-sm); }

.faq-item h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    padding: 20px 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    list-style: none;
    transition: color var(--dur) var(--ease);
}
.faq-item h3::-webkit-details-marker { display: none; }
.faq-item h3:hover { color: var(--brand-red); }

.faq-q {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 27px; height: 27px;
    border-radius: 50%;
    background: var(--brand-red);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
}
.faq-q.a { background: var(--navy-800); }
.faq-toggle {
    margin-left: auto;
    width: 22px; height: 22px;
    flex-shrink: 0;
    position: relative;
    transition: transform var(--dur) var(--ease);
}
.faq-toggle::before,
.faq-toggle::after {
    content: "";
    position: absolute;
    background: var(--text-muted);
    border-radius: 2px;
    transition: all var(--dur) var(--ease);
}
.faq-toggle::before { top: 50%; left: 3px; right: 3px; height: 2px; margin-top: -1px; }
.faq-toggle::after { left: 50%; top: 3px; bottom: 3px; width: 2px; margin-left: -1px; }
.faq-item.open .faq-toggle { transform: rotate(180deg); }
.faq-item.open .faq-toggle::after { opacity: 0; }

.faq-answer {
    padding: 0 24px 24px 63px;
    font-size: 14.5px;
    color: var(--body-text);
    line-height: 1.95;
}
.faq-answer ol { padding-left: 22px; list-style: decimal; margin: 10px 0; }
.faq-answer ol li { margin-bottom: 7px; padding-left: 4px; }
.faq-answer ol li::marker { color: var(--brand-red); font-weight: 700; }
.faq-answer p + p { margin-top: 10px; }
.faq-answer strong { color: var(--ink); }

/* ============================================================
   品牌展示
   ============================================================ */
.brands { padding: 72px 0; }
.brand-list {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 14px;
}
.brand-item {
    background: var(--surface-alt);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    padding: 18px 10px;
    text-align: center;
    transition: all var(--dur) var(--ease);
}
.brand-item:hover {
    border-color: var(--brand-red);
    background: #fff;
    box-shadow: var(--shadow-sm);
    transform: translateY(-3px);
}
.brand-item strong { display: block; font-size: 15.5px; color: var(--ink); margin-bottom: 2px; }
.brand-item span { font-size: 10.5px; color: #a5a8b5; text-transform: uppercase; letter-spacing: 0.6px; }

/* ============================================================
   联系我们
   ============================================================ */
.contact {
    background: linear-gradient(150deg, var(--navy-800) 0%, var(--navy-700) 55%, var(--navy-600) 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.contact::after {
    content: "";
    position: absolute;
    bottom: -30%; left: -10%;
    width: 460px; height: 460px;
    background: radial-gradient(circle, rgba(240, 192, 64, 0.12), transparent 70%);
    border-radius: 50%;
}
.contact-grid {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 64px;
    align-items: start;
    position: relative;
}
.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 26px;
}
.contact-icon {
    width: 44px; height: 44px;
    border-radius: 12px;
    background: rgba(240, 192, 64, 0.12);
    color: var(--brand-gold);
    display: grid;
    place-items: center;
    flex-shrink: 0;
}
.contact-icon svg { width: 21px; height: 21px; }
.contact-item h3 { font-size: 16px; color: var(--brand-gold); margin-bottom: 4px; }
.contact-item p { font-size: 14.5px; color: #b8bdd0; }
.contact-item .hotline a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 21px;
    font-weight: 700;
    color: var(--brand-gold);
    margin: 3px 0;
    letter-spacing: 0.3px;
}
.contact-item .hotline a:hover { color: var(--brand-gold-light); }

.contact-cta {
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--r-lg);
    padding: 40px 36px;
    text-align: center;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}
.contact-cta h3 { font-size: 22px; margin-bottom: 12px; color: var(--brand-gold); }
.contact-cta > p { font-size: 14.5px; color: #b8bdd0; margin-bottom: 24px; }
.contact-cta .btn-primary { margin-bottom: 12px; display: flex; }
.contact-cta .btn-secondary {
    display: flex;
    margin-bottom: 16px;
    color: var(--brand-gold);
    border-color: rgba(240, 192, 64, 0.45);
}
.contact-cta .btn-secondary:hover { border-color: var(--brand-gold); background: rgba(240, 192, 64, 0.1); }
.cta-note { font-size: 13px !important; color: #8a90a5 !important; }
.cta-note a { color: var(--brand-gold); }

/* ============================================================
   Footer
   ============================================================ */
.footer {
    background: var(--navy-900);
    color: #8a8f9f;
    padding: 64px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 44px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.footer h3 {
    font-size: 16px;
    color: #fff;
    margin-bottom: 16px;
    padding-bottom: 10px;
    display: inline-block;
    border-bottom: 2px solid var(--brand-red);
}
.footer-about p { font-size: 13.5px; margin-bottom: 9px; line-height: 1.85; }
.footer-about a { color: var(--brand-gold); font-weight: 600; }
.footer-about .fco { color: #6b7080; font-size: 12.5px; }
.footer-links ul, .footer-service-area ul, .footer-friends ul {
    display: flex;
    flex-direction: column;
    gap: 9px;
}
.footer-links a, .footer-service-area a, .footer-friends a {
    font-size: 13.5px;
    color: #8a8f9f;
    transition: all var(--dur) var(--ease);
    display: inline-block;
}
.footer-links a:hover, .footer-service-area a:hover, .footer-friends a:hover {
    color: var(--brand-gold);
    transform: translateX(4px);
}
.footer-bottom {
    text-align: center;
    padding: 22px 0;
    font-size: 13px;
    color: #5f6474;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}
.footer-bottom a { color: #8a8f9f; }
.footer-bottom a:hover { color: var(--brand-gold); }

/* ============================================================
   浮动元素
   ============================================================ */
.float-phone {
    position: fixed;
    bottom: 88px;
    right: 24px;
    z-index: 999;
}
.float-phone a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px; height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--brand-red), var(--brand-red-dark));
    color: #fff;
    box-shadow: var(--shadow-brand);
    transition: transform var(--dur) var(--ease);
    animation: phonePulse 2.2s infinite;
}
.float-phone a:hover { transform: scale(1.1); color: #fff; }
.float-phone svg { width: 25px; height: 25px; }
@keyframes phonePulse {
    0%, 100% { box-shadow: 0 4px 15px rgba(230, 57, 70, 0.4); }
    50% { box-shadow: 0 4px 28px rgba(230, 57, 70, 0.75); }
}

.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 28px;
    width: 42px; height: 42px;
    border-radius: 50%;
    background: var(--navy-800);
    color: #fff;
    display: grid;
    place-items: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--dur) var(--ease);
    z-index: 999;
    box-shadow: var(--shadow-md);
    border: none;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--brand-red); transform: translateY(-2px); }
.back-to-top svg { width: 15px; height: 15px; }

/* 移动端底部吸底电话条 */
.mobile-bar {
    display: none;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    z-index: 998;
    background: #fff;
    border-top: 1px solid var(--line);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
    padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
    gap: 10px;
}
.mobile-bar a {
    flex: 1;
    padding: 11px;
    border-radius: var(--r-sm);
    font-size: 15px;
    font-weight: 700;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}
.mobile-bar .mb-primary { background: linear-gradient(135deg, var(--brand-red), var(--brand-red-dark)); color: #fff; }
.mobile-bar .mb-secondary { background: #fff5f5; color: var(--brand-red); border: 1px solid rgba(230, 57, 70, 0.25); }
.mobile-bar svg { width: 17px; height: 17px; }

/* ============================================================
   面包屑（区域页）
   ============================================================ */
.breadcrumb {
    background: var(--surface-alt);
    border-bottom: 1px solid var(--line);
    padding: 13px 0;
    font-size: 13.5px;
}
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 7px; align-items: center; }
.breadcrumb li { display: flex; align-items: center; gap: 7px; color: var(--text-muted); }
.breadcrumb li + li::before {
    content: "/";
    color: #c8cbd3;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--brand-red); }
.breadcrumb [aria-current] { color: var(--ink); font-weight: 600; }

/* ============================================================
   区域页专用
   ============================================================ */
.area-hero {
    background: linear-gradient(150deg, var(--navy-800) 0%, var(--navy-700) 55%, var(--navy-600) 100%);
    color: #fff;
    padding: 68px 0 60px;
    position: relative;
    overflow: hidden;
}
.area-hero::before {
    content: "";
    position: absolute;
    top: -40%; right: -14%;
    width: 520px; height: 520px;
    background: radial-gradient(circle, rgba(230, 57, 70, 0.18), transparent 70%);
    border-radius: 50%;
}
.area-hero-content { position: relative; max-width: 820px; }
.area-hero h1 {
    font-size: clamp(25px, 3.6vw, 38px);
    color: #fff;
    letter-spacing: -0.6px;
    margin-bottom: 16px;
}
.area-hero p { color: #c3c8d8; font-size: 16px; max-width: 740px; }
.area-hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}
.area-hero-meta span {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 13.5px;
    color: var(--brand-gold);
}

/* 街道网格 */
.street-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}
.street-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
    padding: 14px 16px;
    font-size: 14.5px;
    color: var(--ink);
    display: flex;
    align-items: center;
    gap: 9px;
    transition: all var(--dur) var(--ease);
}
.street-item svg { width: 15px; height: 15px; color: var(--brand-red); flex-shrink: 0; }
.street-item:hover {
    border-color: var(--brand-red);
    background: #fff5f5;
    transform: translateY(-2px);
}

/* 场景方案卡 */
.scenario-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.scenario-card {
    background: var(--surface);
    border-radius: var(--r-md);
    padding: 28px 26px;
    border: 1px solid var(--line);
    transition: all var(--dur) var(--ease);
}
.scenario-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(230, 57, 70, 0.25); }
.scenario-card h3 {
    font-size: 17.5px;
    color: var(--ink);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.scenario-card h3 svg { width: 20px; height: 20px; color: var(--brand-red); flex-shrink: 0; }
.scenario-card p { font-size: 14.5px; color: var(--text-muted); margin-bottom: 12px; }
.scenario-card .tagline {
    display: inline-block;
    font-size: 12.5px;
    color: var(--brand-red);
    background: #fff5f5;
    padding: 3px 11px;
    border-radius: 999px;
    font-weight: 600;
}

/* 内容分栏（正文 + 侧栏） */
.content-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    align-items: start;
}
.prose h2 {
    font-size: 25px;
    color: var(--ink);
    margin: 44px 0 16px;
    display: flex;
    align-items: center;
    gap: 11px;
}
.prose h2:first-child { margin-top: 0; }
.prose h2::before {
    content: "";
    width: 4px; height: 20px;
    background: var(--brand-red);
    border-radius: 2px;
    flex-shrink: 0;
}
.prose h3 { font-size: 19px; color: var(--ink); margin: 30px 0 12px; }
.prose p { margin-bottom: 15px; font-size: 15.5px; }
.prose ul, .prose ol { padding-left: 22px; margin: 12px 0 18px; }
.prose ul { list-style: none; }
.prose ul li { position: relative; padding-left: 24px; margin-bottom: 9px; }
.prose ul li::before {
    content: "";
    position: absolute;
    left: 0; top: 10px;
    width: 12px; height: 6px;
    border-left: 2px solid var(--brand-red);
    border-bottom: 2px solid var(--brand-red);
    transform: rotate(-45deg);
}
.prose ol { list-style: decimal; }
.prose ol li { margin-bottom: 9px; padding-left: 4px; }
.prose ol li::marker { color: var(--brand-red); font-weight: 700; }
.prose strong { color: var(--ink); font-weight: 700; }
.prose a { color: var(--brand-red); font-weight: 500; }
.prose a:hover { text-decoration: underline; }
.prose table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 14.5px;
}
.prose th, .prose td {
    border: 1px solid var(--line);
    padding: 12px 14px;
    text-align: left;
}
.prose th { background: var(--surface-alt); color: var(--ink); font-weight: 700; }
.prose tbody tr:hover { background: #fffbfb; }

.figure { margin: 26px 0; }
.figure img { width: 100%; border-radius: var(--r-md); box-shadow: var(--shadow-sm); }
.figure figcaption {
    font-size: 13.5px;
    color: var(--text-muted);
    text-align: center;
    margin-top: 10px;
}

/* 侧栏卡片 */
.sidebar { position: sticky; top: calc(var(--nav-h) + 24px); display: grid; gap: 20px; }
.side-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    padding: 26px 24px;
}
.side-card.dark {
    background: linear-gradient(150deg, var(--navy-800), var(--navy-600));
    border: none;
    color: #fff;
}
.side-card h3 { font-size: 17px; color: var(--ink); margin-bottom: 16px; }
.side-card.dark h3 { color: var(--brand-gold); }
.side-list { display: grid; gap: 10px; }
.side-list a {
    font-size: 14px;
    color: var(--body-text);
    padding: 8px 12px;
    border-radius: var(--r-sm);
    background: var(--surface-alt);
    transition: all var(--dur) var(--ease);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}
.side-list a:hover { background: #fff5f5; color: var(--brand-red); padding-left: 16px; }
.side-list a::after { content: "›"; color: #c8cbd3; font-size: 16px; }
.side-list a:hover::after { color: var(--brand-red); }
.side-card.dark .side-list a { background: rgba(255, 255, 255, 0.07); color: #c3c8d8; }
.side-card.dark .side-list a:hover { background: rgba(240, 192, 64, 0.14); color: #fff; }

.side-hotline {
    font-size: 26px;
    font-weight: 800;
    color: var(--brand-gold);
    letter-spacing: -0.5px;
    display: block;
    margin-bottom: 6px;
}
.side-note { font-size: 13.5px; color: #b8bdd0; }

/* 区域页交叉链接 */
.cross-areas {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}
.cross-areas a {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
    padding: 14px 16px;
    font-size: 14.5px;
    color: var(--ink);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    transition: all var(--dur) var(--ease);
}
.cross-areas a:hover {
    border-color: var(--brand-red);
    background: #fff5f5;
    color: var(--brand-red);
    transform: translateY(-2px);
}
.cross-areas a::after { content: "→"; color: var(--text-muted); font-size: 14px; }
.cross-areas a:hover::after { color: var(--brand-red); }
.cross-areas [aria-current] {
    background: var(--brand-red);
    border-color: var(--brand-red);
    color: #fff;
    font-weight: 600;
}
.cross-areas [aria-current]::after { color: #fff; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1100px) {
    .area-grid { grid-template-columns: repeat(2, 1fr); }
    .street-grid { grid-template-columns: repeat(3, 1fr); }
    .content-layout { grid-template-columns: 1fr; }
    .sidebar { position: static; }
}

@media (max-width: 1024px) {
    .about-content { grid-template-columns: 1fr; gap: 40px; }
    .about-stats { position: static; }
    .advantage-grid { grid-template-columns: repeat(2, 1fr); }
    .benefit-list { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .brand-list { grid-template-columns: repeat(4, 1fr); }
    .cross-areas { grid-template-columns: repeat(3, 1fr); }
    .scenario-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
    :root { --section-y: 64px; }
    .process-steps { grid-template-columns: 1fr; gap: 0; }
    .step-connector { width: 2px; height: 30px; margin: 0 auto; background: linear-gradient(180deg, var(--brand-red), var(--brand-gold)); }
    .step-connector::after {
        right: auto; left: 50%; top: auto; bottom: -1px;
        transform: translateX(-50%);
        border-left: 4px solid transparent;
        border-right: 4px solid transparent;
        border-top: 7px solid var(--brand-red);
        border-bottom: none;
    }
    .step-content { padding: 22px 20px; }
}

@media (max-width: 768px) {
    .mobile-menu-btn { display: flex; }
    .nav-list {
        display: none;
        position: absolute;
        top: 100%; left: 0; right: 0;
        background: #fff;
        flex-direction: column;
        padding: 8px var(--gutter) 16px;
        box-shadow: var(--shadow-md);
        border-top: 1px solid var(--line);
        max-height: calc(100vh - var(--nav-h));
        overflow-y: auto;
    }
    .nav-list.active { display: flex; }
    .nav-list a { padding: 12px 12px; border-bottom: 1px solid var(--line-soft); border-radius: var(--r-sm); }
    .nav-list a::after { display: none; }
    .nav-list a.active { background: #fff5f5; }

    .logo { font-size: 17px; }
    .logo-mark { width: 34px; height: 34px; }
    .logo-text small { display: none; }

    .hero { padding: 62px 0 54px; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); }
    .hero-cta .btn { flex: 1; min-width: 140px; }

    .area-grid { grid-template-columns: 1fr; gap: 12px; }
    .area-item { padding: 18px 20px; }
    .area-item h3 .go { opacity: 1; transform: none; }
    .street-grid { grid-template-columns: repeat(2, 1fr); }
    .cross-areas { grid-template-columns: repeat(2, 1fr); }

    .product-grid { grid-template-columns: 1fr; }
    .product-body { padding: 22px 22px 24px; }
    .advantage-grid { grid-template-columns: 1fr; }
    .advantage-card { padding: 28px 24px; }
    .case-categories { grid-template-columns: 1fr; }
    .product-types { grid-template-columns: 1fr; }
    .brand-list { grid-template-columns: repeat(3, 1fr); }
    .scenario-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }

    .contact-cta { padding: 26px 22px; }
    .benefit-item { padding: 20px; }

    /* 移动端改用底部吸底电话条 */
    .float-phone { display: none; }
    .mobile-bar { display: flex; }
    .back-to-top { bottom: 84px; right: 16px; width: 40px; height: 40px; }
    body { padding-bottom: 66px; }

    .faq-answer { padding: 0 20px 22px 20px; }
    .faq-item h3 { padding: 18px 20px; font-size: 16px; }
    .prose h2 { font-size: 22px; }
    .prose table { font-size: 13.5px; display: block; overflow-x: auto; white-space: nowrap; }

    .area-hero { padding: 44px 0 40px; }
}

@media (max-width: 480px) {
    :root { --gutter: 16px; }
    .top-bar { font-size: 12px; }
    .top-info { display: none; }
    .top-contact { width: 100%; justify-content: center; gap: 14px; }
    .hero h1 { letter-spacing: -0.4px; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); }
    .hero-stat { padding: 16px 8px; }
    .btn { padding: 12px 22px; font-size: 15px; }
    .btn-lg { padding: 13px 26px; font-size: 16px; }
    .brand-list { grid-template-columns: repeat(2, 1fr); }
    .street-grid { grid-template-columns: 1fr; }
    .cross-areas { grid-template-columns: 1fr; }
    .stat-number { font-size: 27px; }
    .about-stats { gap: 12px; }
    .section-desc { font-size: 15px; }
}

/* ============================================================
   动效与打印
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

@media print {
    .top-bar, .main-nav, .float-phone, .mobile-bar, .back-to-top,
    .hero-cta, .contact-cta { display: none !important; }
    body { color: #000; font-size: 12pt; padding-bottom: 0; }
    .section, .rental-benefits, .contact, .area-hero {
        background: #fff !important;
        color: #000 !important;
        padding: 16pt 0;
        break-inside: avoid;
    }
    .section-title, .section-dark .section-title { color: #000 !important; }
    .section-title::after { display: none; }
    .product-card, .advantage-card, .case-category, .faq-item, .side-card {
        border: 1px solid #ccc;
        box-shadow: none !important;
        break-inside: avoid;
    }
    a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 9pt; color: #666; }
}