/* ============================================================
   集和品牌官网 · 全局样式 main.css
   高端咨询级视觉 · 主色 #C8102E / 深灰 #0A0A0A
   ============================================================ */

:root {
    /* 主色 */
    --red-primary: #C8102E;
    --red-dark: #8E0B1F;
    --red-50: #FBECEF;
    --red-100: #F4D3D8;

    /* 中性色 */
    --black: #0A0A0A;
    --ink-900: #141414;
    --ink-800: #1C1C1E;
    --ink-700: #2C2C2E;
    --ink-500: #6B6B70;
    --ink-400: #8E8E93;
    --ink-200: #D1D1D6;
    --ink-100: #E5E5EA;
    --ink-50:  #F2F2F7;
    --white: #FFFFFF;

    /* 背景层 */
    --bg-canvas: #FAFAFA;
    --bg-slab: #0A0A0A;

    /* 尺寸 */
    --max-width: 1320px;
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 18px;
    --radius-xl: 24px;

    /* 多层阴影 */
    --shadow-1: 0 1px 2px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.04);
    --shadow-2: 0 4px 12px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-3: 0 16px 40px -12px rgba(0,0,0,0.18), 0 4px 12px rgba(0,0,0,0.06);
    --shadow-dark: 0 30px 80px -20px rgba(0,0,0,0.35), 0 8px 24px rgba(0,0,0,0.1);

    /* 字体系统 */
    --font-serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", Georgia, serif;
    --font-mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
                 "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei",
                 "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--black);
    background: var(--bg-canvas);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: "ss01", "ss02";
}

html { scroll-behavior: smooth; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: transparent; color: inherit; }
ul, ol { padding: 0; margin: 0; list-style: none; }
h1, h2, h3, h4 { letter-spacing: -0.015em; }

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 40px;
}
@media (max-width: 900px) { .container { padding: 0 20px; } }

/* ============ Navbar ============ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.nav-inner {
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
    text-decoration: none;
    color: var(--black);
    line-height: 1;
}

.brand-en,
.brand-cn {
    font-size: 18px;
    font-weight: 700;
    color: var(--black);
    font-family: 'PingFang SC', 'Microsoft YaHei', Helvetica, Arial, sans-serif;
}
.brand-en { letter-spacing: 0.1em; }
.brand-cn { letter-spacing: 0.08em; color: var(--red-primary); }

.brand-sep {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    margin: 0 4px;
}
.brand-sep .sep {
    display: inline-block;
    background: var(--black);
    border-radius: 1px;
    font-style: normal;
}
.brand-sep .dash {
    width: 14px;
    height: 2px;
}
.brand-sep .bar {
    width: 2px;
    height: 12px;
}

/* 保留旧结构兼容（若其他页面复用） */
.brand-mark {
    width: 36px;
    height: 36px;
    background: var(--black);
    color: #fff;
    font-weight: 700;
    font-family: var(--font-mono);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: 16px;
    letter-spacing: 0;
    position: relative;
}
.brand-mark::after {
    content: "";
    position: absolute;
    right: 4px; bottom: 4px;
    width: 6px; height: 6px;
    background: var(--red-primary);
    border-radius: 2px;
}

.brand-text { display: inline-flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: 14px; letter-spacing: 0.18em; color: var(--black); font-weight: 700; }
.brand-text small { font-size: 10px; letter-spacing: 0.35em; color: var(--ink-400); margin-top: 3px; }

.nav-links {
    display: flex;
    gap: 28px;
    align-items: center;
    flex-wrap: nowrap;
    justify-content: center;
}

.nav-links a {
    font-size: 14px;
    color: var(--ink-700);
    padding: 8px 0;
    position: relative;
    transition: color 0.2s;
    white-space: nowrap;
    font-weight: 500;
}

.nav-links a::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: 2px;
    height: 1px;
    background: var(--red-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s ease;
}
.nav-links a:hover,
.nav-links a.active { color: var(--black); }
.nav-links a.active::after,
.nav-links a:hover::after { transform: scaleX(1); }

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.nav-cta { padding: 10px 22px !important; font-size: 13px; }

.hamburger {
    display: none;
    width: 36px;
    height: 36px;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    border-radius: 6px;
}
.hamburger span {
    display: block;
    height: 1.5px;
    background: var(--black);
    margin: 0 auto;
    width: 20px;
    transition: transform 0.2s, opacity 0.2s;
}

@media (max-width: 1080px) {
    .nav-links { gap: 18px; }
    .nav-links a { font-size: 13px; }
}
@media (max-width: 900px) {
    .nav-links {
        position: absolute;
        top: 72px;
        left: 0; right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 6px 0 12px;
        border-bottom: 1px solid var(--ink-100);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
        box-shadow: var(--shadow-2);
    }
    .nav-links.open { max-height: 720px; }
    .nav-links a {
        padding: 14px 24px;
        border-bottom: 1px solid var(--ink-50);
        font-size: 14px;
    }
    .nav-links a::after { display: none; }
    .hamburger { display: flex; }
}

/* ============ Buttons ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 13px 28px;
    font-size: 13.5px;
    font-weight: 500;
    letter-spacing: 0.04em;
    border-radius: 999px;
    transition: all 0.25s ease;
    border: 1px solid transparent;
    white-space: nowrap;
    cursor: pointer;
    line-height: 1;
}

.btn-primary {
    background: var(--black);
    color: #fff;
    border-color: var(--black);
}
.btn-primary:hover {
    background: var(--red-primary);
    border-color: var(--red-primary);
    transform: translateY(-1px);
    box-shadow: 0 10px 22px -8px rgba(200,16,46,0.55);
}

.btn-outline {
    border-color: var(--ink-200);
    color: var(--black);
    background: #fff;
}
.btn-outline:hover {
    border-color: var(--black);
    background: var(--black);
    color: #fff;
}

.btn-outline-light {
    border-color: rgba(255,255,255,0.35);
    color: #fff;
    background: transparent;
}
.btn-outline-light:hover {
    background: #fff;
    color: var(--black);
}

.btn-ghost {
    color: var(--black);
    font-size: 13px;
    padding: 4px 0;
    border-bottom: 1px solid transparent;
    transition: color 0.2s, border-color 0.2s;
    background: transparent;
    font-weight: 500;
    letter-spacing: 0.02em;
}
.btn-ghost::after { content: " →"; display: inline-block; transition: transform 0.2s; }
.btn-ghost:hover { color: var(--red-primary); }
.btn-ghost:hover::after { transform: translateX(4px); }

/* ============ Section 通用 ============ */
.section { padding: 120px 0; }
.section-sm { padding: 72px 0; }

@media (max-width: 768px) {
    .section { padding: 80px 0; }
    .section-sm { padding: 48px 0; }
}

/* 针对指定区块的微调 */
section#business { padding-top: 50px; padding-bottom: 50px; }
section#business > div.container { padding-top: 0; padding-bottom: 0; }
section#cases { padding-top: 50px; padding-bottom: 50px; }

.section-head {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-bottom: 56px;
    max-width: 860px;
    padding-left: 22px;
    border-left: 2px solid var(--red-primary);
}
.section-head small {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    font-size: 12px;
    letter-spacing: 0.3em;
    color: var(--red-primary);
    font-weight: 600;
    text-transform: uppercase;
    line-height: 1.4;
}
.section-head small::before {
    content: "";
    width: 28px;
    height: 1px;
    background: var(--red-primary);
    display: inline-block;
}

.section-head h2 {
    font-size: 38px;
    color: var(--black);
    margin: 0;
    letter-spacing: -0.02em;
    font-weight: 700;
    line-height: 1.25;
}
.section-head p {
    color: var(--ink-500);
    font-size: 15px;
    margin: 0;
    line-height: 1.85;
    max-width: 720px;
}

@media (max-width: 768px) {
    .section-head {
        padding-left: 16px;
        margin-bottom: 40px;
        gap: 14px;
    }
    .section-head h2 { font-size: 26px; }
}

/* ============ Hero 首屏 ============ */
.hero {
    position: relative;
    padding: 72px 0 140px;
    background:
        linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(250,250,250,1) 100%),
        radial-gradient(1200px 500px at 85% -10%, rgba(200,16,46,0.08), transparent 60%),
        radial-gradient(900px 500px at 5% 20%, rgba(10,10,10,0.06), transparent 70%),
        #fff;
    overflow: hidden;
}

/* 极细的网格背景 */
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, rgba(0,0,0,0.035) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0,0,0,0.035) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,0.7), rgba(0,0,0,0));
    -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.7), rgba(0,0,0,0));
    pointer-events: none;
}

/* 主视觉行 */
.hero-row {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 72px;
    align-items: stretch;
    position: relative;
    z-index: 2;
    padding-top: 56px;
}

.hero-text {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    min-height: 0;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    color: var(--ink-500);
    letter-spacing: 0.3em;
    margin-bottom: 28px;
    font-weight: 500;
}
.hero-eyebrow::before {
    content: "";
    display: inline-block;
    width: 8px; height: 8px;
    background: var(--red-primary);
    border-radius: 2px;
    transform: rotate(45deg);
    box-shadow: 0 0 0 4px rgba(200,16,46,0.12);
}

.hero h1 {
    font-size: clamp(34px, 4.6vw, 64px);
    font-weight: 700;
    line-height: 1.08;
    color: var(--black);
    margin: 0 0 24px;
    letter-spacing: -0.03em;
}
.hero h1 em {
    color: var(--red-primary);
    font-style: normal;
    position: relative;
    display: block;
    margin-top: 15px;
}

.hero-desc {
    color: var(--ink-500);
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 36px;
    white-space: nowrap;
}

.hero-ctas {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 40px;
    margin-bottom: 48px;
}
.hero-ctas .btn-primary { padding: 15px 32px; font-size: 14px; }
.hero-ctas .btn-outline { padding: 15px 26px; font-size: 14px; }

/* 指标行 */
.hero-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding-top: 28px;
    margin-top: 40px;
    border-top: 1px solid var(--ink-100);
    flex-wrap: wrap;
}
.hero-meta-item {
    position: relative;
    background: #fff;
    border: 1px solid var(--ink-100);
    border-radius: 12px;
    padding: 18px 20px 18px 28px;
    box-shadow: 0 6px 18px rgba(10,10,10,0.06);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.hero-meta-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(10,10,10,0.1);
}
.hero-meta-item::before {
    content: "";
    position: absolute;
    left: 10px;
    top: 18px;
    bottom: 18px;
    width: 3px;
    border-radius: 2px;
    background: var(--red-primary);
}
.hero-meta-item strong {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--black);
    letter-spacing: -0.02em;
    font-family: var(--font-mono);
    line-height: 1;
}
.hero-meta-item strong::after {
    content: "+";
    color: var(--red-primary);
    margin-left: 2px;
    font-weight: 500;
    font-size: 0.75em;
}
.hero-meta-item span {
    display: block;
    font-size: 12px;
    color: var(--ink-400);
    letter-spacing: 0.1em;
    margin-top: 8px;
}

/* Hero 右侧媒体卡 */
.hero-media {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: visible;
    aspect-ratio: 4 / 4.5;
    background: var(--black);
    box-shadow: var(--shadow-dark);
    perspective: 1200px;
}
.hero-media-inner {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(120% 80% at 100% 0%, rgba(200,16,46,0.35), transparent 55%),
        linear-gradient(160deg, #1a1a1a 0%, #0a0a0a 50%, #2a0a12 100%);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
}
.hero-media-inner::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, rgba(255,255,255,0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(circle at 60% 40%, #000 0%, transparent 75%);
    -webkit-mask-image: radial-gradient(circle at 60% 40%, #000 0%, transparent 75%);
}

.hero-media {
    --tilt-x: 0;
    --tilt-y: 0;
    --tilt-rot: 0deg;
    --float-mx: 0px;
    --float-my: 0px;
    --float-scale: 1;
}

.hero-media-inner {
    transform: translate3d(var(--tilt-x), var(--tilt-y), 0) rotate(var(--tilt-rot));
}

/* 浮动的红色焦点圆 - 跟随鼠标晃动 */
.hero-media-float {
    position: absolute;
    width: 220px;
    height: 220px;
    background: radial-gradient(circle, var(--red-primary) 0%, var(--red-dark) 70%);
    border-radius: 50%;
    top: 14%;
    left: 16%;
    filter: blur(2px);
    box-shadow: 0 0 80px rgba(200,16,46,0.55);
    transform: translate3d(var(--float-mx), var(--float-my), 0) scale(var(--float-scale));
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
                box-shadow 0.45s ease;
    will-change: transform;
}
.hero-media-float::after {
    content: "";
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.18);
    transform: rotate(25deg) scale(1);
    opacity: 0.5;
    pointer-events: none;
}

/* 角标信息 */
.hero-media-badge {
    position: absolute;
    top: 24px;
    left: 24px;
    right: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: rgba(255,255,255,0.75);
    font-size: 11px;
    letter-spacing: 0.22em;
    font-family: var(--font-mono);
    z-index: 3;
}
.hero-media-badge .dot {
    display: inline-block;
    width: 6px; height: 6px; border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 0 4px rgba(74,222,128,0.2);
    margin-right: 6px;
    vertical-align: middle;
}

/* Hero 中心文字 */
.hero-media-text {
    position: absolute;
    bottom: 40px;
    left: 36px;
    right: 36px;
    color: #fff;
    z-index: 3;
}
.hero-media-text .theme-scroll {
    position: relative;
    overflow: hidden;
    width: 100%;
}
.hero-media-text .theme-scroll-year {
    height: 18px;
    margin-bottom: 8px;
}
.hero-media-text .theme-scroll-headline {
    height: 35px;
    margin-bottom: 14px;
}
.hero-media-text .theme-scroll-track {
    list-style: none;
    margin: 0;
    padding: 0;
    will-change: transform;
}
.hero-media-text .theme-scroll-year .theme-scroll-track {
    transform: translateY(0);
}
.hero-media-text .theme-scroll-headline .theme-scroll-track {
    transform: translateY(0);
}
.hero-media-text .theme-scroll-year li {
    height: 18px;
    line-height: 18px;
    font-size: 11px;
    letter-spacing: 0.2em;
    color: rgba(255,255,255,0.6);
    font-family: var(--font-mono);
    text-transform: uppercase;
    font-weight: 500;
}
.hero-media-text .theme-scroll-headline li {
    height: 35px;
    line-height: 35px;
    font-size: 24px;
    font-weight: 600;
    color: #fff;
}
.hero-media-text .theme-scroll-headline li em {
    color: var(--red-primary);
    font-style: normal;
    font-weight: 700;
}
@keyframes theme-hero-year {
    0%          { transform: translateY(0); }
    2.17%       { transform: translateY(-18px); }
    4.35%       { transform: translateY(-36px); }
    6.52%       { transform: translateY(-54px); }
    8.70%       { transform: translateY(-72px); }
    10.87%      { transform: translateY(-90px); }
    13.04%      { transform: translateY(-108px); }
    15.22%      { transform: translateY(-126px); }
    17.39%      { transform: translateY(-144px); }
    19.57%      { transform: translateY(-162px); }
    21.74%      { transform: translateY(-180px); }
    23.91%      { transform: translateY(-198px); }
    26.09%      { transform: translateY(-216px); }
    28.26%      { transform: translateY(-234px); }
    30.43%      { transform: translateY(-252px); }
    32.61%      { transform: translateY(-270px); }
    34.78%      { transform: translateY(-288px); }
    36.96%      { transform: translateY(-306px); }
    39.13%      { transform: translateY(-324px); }
    41.30%      { transform: translateY(-342px); }
    43.48%      { transform: translateY(-360px); }
    45.65%      { transform: translateY(-378px); }
    47.83%      { transform: translateY(-396px); }
    50.00%      { transform: translateY(-414px); }
    52.17%      { transform: translateY(-432px); }
    54.35%      { transform: translateY(-450px); }
    56.52%      { transform: translateY(-468px); }
    58.70%      { transform: translateY(-486px); }
    60.87%      { transform: translateY(-504px); }
    63.04%      { transform: translateY(-522px); }
    65.22%      { transform: translateY(-540px); }
    67.39%      { transform: translateY(-558px); }
    69.57%      { transform: translateY(-576px); }
    71.74%      { transform: translateY(-594px); }
    73.91%      { transform: translateY(-612px); }
    76.09%      { transform: translateY(-630px); }
    78.26%      { transform: translateY(-648px); }
    80.43%      { transform: translateY(-666px); }
    82.61%      { transform: translateY(-684px); }
    84.78%      { transform: translateY(-702px); }
    86.96%      { transform: translateY(-720px); }
    89.13%      { transform: translateY(-738px); }
    91.30%      { transform: translateY(-756px); }
    93.48%      { transform: translateY(-774px); }
    95.65%      { transform: translateY(-792px); }
    97.83%      { transform: translateY(-810px); }
    100%        { transform: translateY(-828px); }
}
@keyframes theme-hero-headline {
    0%          { transform: translateY(0); }
    2.17%       { transform: translateY(-35px); }
    4.35%       { transform: translateY(-70px); }
    6.52%       { transform: translateY(-105px); }
    8.70%       { transform: translateY(-140px); }
    10.87%      { transform: translateY(-175px); }
    13.04%      { transform: translateY(-210px); }
    15.22%      { transform: translateY(-245px); }
    17.39%      { transform: translateY(-280px); }
    19.57%      { transform: translateY(-315px); }
    21.74%      { transform: translateY(-350px); }
    23.91%      { transform: translateY(-385px); }
    26.09%      { transform: translateY(-420px); }
    28.26%      { transform: translateY(-455px); }
    30.43%      { transform: translateY(-490px); }
    32.61%      { transform: translateY(-525px); }
    34.78%      { transform: translateY(-560px); }
    36.96%      { transform: translateY(-595px); }
    39.13%      { transform: translateY(-630px); }
    41.30%      { transform: translateY(-665px); }
    43.48%      { transform: translateY(-700px); }
    45.65%      { transform: translateY(-735px); }
    47.83%      { transform: translateY(-770px); }
    50.00%      { transform: translateY(-805px); }
    52.17%      { transform: translateY(-840px); }
    54.35%      { transform: translateY(-875px); }
    56.52%      { transform: translateY(-910px); }
    58.70%      { transform: translateY(-945px); }
    60.87%      { transform: translateY(-980px); }
    63.04%      { transform: translateY(-1015px); }
    65.22%      { transform: translateY(-1050px); }
    67.39%      { transform: translateY(-1085px); }
    69.57%      { transform: translateY(-1120px); }
    71.74%      { transform: translateY(-1155px); }
    73.91%      { transform: translateY(-1190px); }
    76.09%      { transform: translateY(-1225px); }
    78.26%      { transform: translateY(-1260px); }
    80.43%      { transform: translateY(-1295px); }
    82.61%      { transform: translateY(-1330px); }
    84.78%      { transform: translateY(-1365px); }
    86.96%      { transform: translateY(-1400px); }
    89.13%      { transform: translateY(-1435px); }
    91.30%      { transform: translateY(-1470px); }
    93.48%      { transform: translateY(-1505px); }
    95.65%      { transform: translateY(-1540px); }
    97.83%      { transform: translateY(-1575px); }
    100%        { transform: translateY(-1610px); }
}
.hero-media-text .meta-row {
    display: flex;
    gap: 18px;
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid rgba(255,255,255,0.12);
    font-family: var(--font-mono);
    font-size: 12px;
    color: rgba(255,255,255,0.6);
}
.hero-media-text .meta-row span strong {
    color: #fff;
    font-weight: 600;
    margin-right: 4px;
}

/* Hero 下方的浮动卡 */
.hero-floater {
    position: absolute;
    right: -24px;
    bottom: 8%;
    background: #fff;
    padding: 18px 22px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-3);
    display: flex;
    align-items: center;
    gap: 14px;
    z-index: 4;
    min-width: 240px;
}
.hero-floater .ico {
    width: 36px;
    height: 36px;
    background: var(--red-50);
    color: var(--red-primary);
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: var(--font-mono);
    font-size: 14px;
}
.hero-floater .txt strong {
    display: block;
    font-size: 13px;
    color: var(--black);
    font-weight: 600;
}
.hero-floater .txt span {
    font-size: 12px;
    color: var(--ink-400);
}

@media (max-width: 900px) {
    .hero-row { grid-template-columns: 1fr; gap: 40px; padding-top: 24px; }
    .hero { padding: 36px 0 88px; }
    .hero-meta { grid-template-columns: 1fr; gap: 12px; }
    .hero-meta-item { padding: 14px 18px 14px 24px; }
    .hero-meta-item strong { font-size: 24px; }
    .hero-floater { display: none; }
}

/* ============ 信任区块 ============ */
.hero-trust {
    position: relative;
    margin-top: 72px;
    background: #fff;
    border: 1px solid var(--ink-100);
    border-radius: var(--radius-xl);
    padding: 56px 56px 52px;
    box-shadow: 0 24px 60px -30px rgba(10,10,10,0.18), 0 2px 4px rgba(10,10,10,0.04);
    z-index: 2;
    overflow: hidden;
}
.hero-trust::before {
    content: "";
    position: absolute;
    left: 0; top: 0;
    width: 4px; height: 56px;
    background: var(--red-primary);
    border-radius: 0 2px 2px 0;
}

.trust-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 24px;
    margin-bottom: 40px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--ink-100);
    flex-wrap: wrap;
}

/* 年度主题垂直滚动（两行 23 组） */
.theme-scroll {
    position: relative;
    overflow: hidden;
    width: 100%;
}
.theme-scroll-small {
    height: 22px;
    margin-bottom: 14px;
    mask-image: linear-gradient(180deg, transparent 0%, #000 18%, #000 82%, transparent 100%);
    -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 18%, #000 82%, transparent 100%);
}
.theme-scroll-title {
    height: 34px;
    margin-bottom: 10px;
    mask-image: linear-gradient(180deg, transparent 0%, #000 18%, #000 82%, transparent 100%);
    -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 18%, #000 82%, transparent 100%);
}
.theme-scroll-track {
    list-style: none;
    margin: 0;
    padding: 0;
    will-change: transform;
}
.theme-scroll-small .theme-scroll-track {
    animation: theme-scroll-small 69s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}
.theme-scroll-title .theme-scroll-track {
    animation: theme-scroll-title 69s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}
.theme-scroll-small li {
    height: 22px;
    line-height: 22px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--red-primary);
    letter-spacing: 0.12em;
    font-weight: 600;
    text-transform: uppercase;
}
.theme-scroll-title li {
    height: 34px;
    line-height: 34px;
    font-size: 24px;
    font-weight: 700;
    color: var(--black);
    letter-spacing: -0.01em;
}
.theme-scroll-title li em {
    color: var(--red-primary);
    font-style: normal;
    font-weight: 700;
}
@keyframes theme-scroll-small {
    0%   { transform: translateY(0); }
    100% { transform: translateY(calc(-22px * 46)); }
}
@keyframes theme-scroll-title {
    0%   { transform: translateY(0); }
    100% { transform: translateY(calc(-34px * 46)); }
}

.trust-head-text {
    transform: translateY(-20px);
}
.trust-head-text p {
    margin: 0;
    font-size: 14px;
    color: var(--ink-400);
    letter-spacing: 0.04em;
}
.trust-head-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-400);
    letter-spacing: 0.2em;
    padding: 8px 14px;
    border: 1px solid var(--ink-100);
    border-radius: 999px;
    white-space: nowrap;
}
.trust-head-tag .dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--red-primary);
    display: inline-block;
    box-shadow: 0 0 0 4px rgba(200,16,46,0.12);
}

.trust-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 40px;
}
.trust-stats-item {
    padding: 32px 26px 28px;
    border: 1px solid #ececee;
    border-radius: 6px;
    background: linear-gradient(160deg, #fff8f5 0%, #fff 55%, #fff6f3 100%);
    position: relative;
    transition: all 0.3s ease;
    overflow: hidden;
}
.trust-stats-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #c8102e 0%, #e85262 50%, #c8102e 100%);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.35s ease;
}
.trust-stats-item:hover {
    background: linear-gradient(160deg, #fff0e8 0%, #fff8f5 55%, #ffe9df 100%);
    border-color: #e85262;
    box-shadow: 0 18px 40px rgba(200,16,46,0.08);
    transform: translateY(-4px);
}
.trust-stats-item:hover::before {
    transform: scaleX(1);
}
.trust-stats-item strong {
    display: block;
    font-size: 40px;
    font-weight: 700;
    color: #c8102e;
    line-height: 1;
    margin-bottom: 14px;
    letter-spacing: -0.02em;
}
.trust-stats-item sup {
    color: #c8102e;
    font-size: 16px;
    vertical-align: top;
    margin-left: 2px;
    font-weight: 500;
}
.trust-stats-item span {
    font-size: 13.5px;
    color: #5a4d43;
    letter-spacing: 0.06em;
    display: block;
}

.trust-logos {
    position: relative;
    overflow: hidden;
    padding: 24px 0 30px;
    margin-top: 6px;
    mask-image: linear-gradient(90deg, transparent 0%, #000 5%, #000 95%, transparent 100%);
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 5%, #000 95%, transparent 100%);
}
.trust-logos-row {
    display: flex;
    width: 100%;
    overflow: hidden;
}
.trust-logos-row + .trust-logos-row {
    margin-top: 14px;
}
.trust-logos-track {
    display: flex;
    flex-shrink: 0;
    gap: 14px;
    padding-left: 14px;
    width: max-content;
}
.trust-logos-row-ltr .trust-logos-track {
    animation: marquee-ltr 80s linear infinite;
}
.trust-logos-row-rtl .trust-logos-track {
    animation: marquee-rtl 100s linear infinite;
}
.trust-logos-item {
    flex: 0 0 auto;
    min-width: 160px;
    padding: 18px 28px;
    text-align: center;
    font-size: 14px;
    color: #111;
    font-weight: 600;
    letter-spacing: 0.08em;
    background: #fff;
    border: 1px solid #e8e8e8;
    border-radius: 6px;
    box-shadow: 0 2px 6px rgba(10, 10, 10, 0.04);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
}
.trust-logos-item::before {
    content: "";
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #111;
    flex-shrink: 0;
    transition: background 0.2s ease;
}
.trust-logos-item:nth-child(6n+1) {
    border-color: #e9a28e;
}
.trust-logos-item:nth-child(6n+1)::before {
    background: #e9a28e;
}
.trust-logos-item:nth-child(6n+2) {
    border-color: #e5b982;
}
.trust-logos-item:nth-child(6n+2)::before {
    background: #e5b982;
}
.trust-logos-item:nth-child(6n+3) {
    border-color: #a6c59a;
}
.trust-logos-item:nth-child(6n+3)::before {
    background: #a6c59a;
}
.trust-logos-item:nth-child(6n+4) {
    border-color: #96b8cf;
}
.trust-logos-item:nth-child(6n+4)::before {
    background: #96b8cf;
}
.trust-logos-item:nth-child(6n+5) {
    border-color: #b59ac0;
}
.trust-logos-item:nth-child(6n+5)::before {
    background: #b59ac0;
}
.trust-logos-item:nth-child(6n+6) {
    border-color: #c8102e;
}
.trust-logos-item:nth-child(6n+6)::before {
    background: #c8102e;
}
.trust-logos-item:hover {
    background: linear-gradient(135deg, #c8102e 0%, #e85262 100%);
    color: #fff;
    border-color: #c8102e;
    box-shadow: 0 8px 18px rgba(200, 16, 46, 0.2);
    transform: translateY(-2px);
}
@keyframes marquee-ltr {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}
@keyframes marquee-rtl {
    0%   { transform: translateX(-50%); }
    100% { transform: translateX(0); }
}

@media (max-width: 900px) {
    .hero-trust { padding: 32px 22px 36px; margin-top: 48px; }
    .trust-head { margin-bottom: 28px; padding-bottom: 20px; }
    .trust-head-text h3 { font-size: 20px; }
    .trust-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 28px; }
    .trust-stats-item { padding: 18px 18px 20px; }
    .trust-stats-item strong { font-size: 28px; }
    .trust-logos { padding: 10px 0 16px; }
    .trust-logos-row + .trust-logos-row { margin-top: 10px; }
    .trust-logos-track { gap: 10px; padding-left: 10px; }
    .trust-logos-item { min-width: 126px; padding: 13px 18px; font-size: 12px; box-shadow: 0 2px 4px rgba(10,10,10,0.04); }

    .theme-scroll-small { height: 20px; margin-bottom: 10px; }
    .theme-scroll-title { height: 28px; margin-bottom: 8px; }
    .theme-scroll-small li { height: 20px; line-height: 20px; font-size: 10px; letter-spacing: 0.2em; }
    .theme-scroll-title li { height: 28px; line-height: 28px; font-size: 18px; }
    @keyframes theme-scroll-small {
        0%   { transform: translateY(0); }
        100% { transform: translateY(calc(-20px * 46)); }
    }
    @keyframes theme-scroll-title {
        0%   { transform: translateY(0); }
        100% { transform: translateY(calc(-28px * 46)); }
    }
}

/* ============ About intro / 品牌主张 ============ */
.about-intro.section {
    padding: 50px 0;
    background: var(--bg-canvas);
    position: relative;
}
.about-intro-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 80px;
    align-items: flex-start;
}
.about-intro-left small {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 11.5px;
    letter-spacing: 0.32em;
    color: var(--red-primary);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 22px;
}
.about-intro-left small::before {
    content: "";
    width: 28px;
    height: 1px;
    background: var(--red-primary);
    display: inline-block;
}
.about-intro-left h2 {
    font-size: 42px;
    color: var(--black);
    margin: 0 0 16px;
    letter-spacing: -0.015em;
    font-weight: 700;
    line-height: 1.2;
}
.about-intro-left .about-intro-sub {
    font-size: 16px;
    color: var(--red-primary);
    font-weight: 600;
    letter-spacing: 0.04em;
    margin: 0;
    line-height: 1.6;
}

.about-intro-right p {
    font-size: 15.5px;
    line-height: 1.9;
    color: var(--ink-500);
    margin: 0 0 28px;
}
.about-intro-ctas {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}
.about-intro-ctas .btn {
    padding: 13px 30px;
    font-size: 14px;
    letter-spacing: 0.03em;
    border-radius: 4px;
}
.about-intro-ctas .btn-primary {
    background: var(--red-primary);
    border-color: var(--red-primary);
    color: #fff;
}
.about-intro-ctas .btn-primary:hover {
    background: var(--black);
    border-color: var(--black);
}
.about-intro-ctas .btn-outline {
    background: transparent;
    border-color: var(--ink-200);
    color: var(--ink-500);
}
.about-intro-ctas .btn-outline:hover {
    border-color: var(--black);
    color: var(--black);
}

.about-intro-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 64px;
}
.a-card {
    display: flex;
    gap: 24px;
    padding: 28px 30px;
    background: #fff;
    border: 1px solid var(--ink-100);
    border-radius: var(--radius-md);
    transition: border-color 0.3s ease, transform 0.3s ease;
}
.a-card:hover {
    border-color: var(--red-primary);
    transform: translateY(-2px);
}
.a-card-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(200, 16, 46, 0.06);
    color: var(--red-primary);
    border-radius: 8px;
}
.a-card-body h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--black);
    margin: 0 0 10px;
    letter-spacing: -0.01em;
}
.a-card-body p {
    font-size: 14px;
    line-height: 1.75;
    color: var(--ink-500);
    margin: 0;
}

@media (max-width: 900px) {
    .about-intro.section { padding: 80px 0; }
    .about-intro-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .about-intro-left h2 { font-size: 28px; }
    .about-intro-right p { font-size: 14.5px; line-height: 1.8; }
    .about-intro-ctas .btn { padding: 12px 22px; font-size: 13px; }
    .about-intro-cards {
        grid-template-columns: 1fr;
        margin-top: 48px;
    }
    .a-card { padding: 24px; }
    .a-card-body h3 { font-size: 16px; }
}

/* ============ Business grid (六大业务板块) ============ */
.biz-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.biz-card {
    position: relative;
    background: #fff;
    border: 1px solid var(--ink-100);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
    display: flex;
    flex-direction: column;
}
.biz-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 40px rgba(10, 10, 10, 0.08);
    border-color: var(--ink-200);
}

/* 上半：深蓝渐变 + 数字 + 图标 + 标题 + 网络光点 */
.biz-top {
    position: relative;
    padding: 30px 28px 36px;
    color: #fff;
    background: linear-gradient(150deg, #243B7A 0%, #1A2856 55%, #0E1737 100%);
    overflow: hidden;
}
.biz-top::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.08), transparent 45%),
        radial-gradient(circle at 20% 80%, rgba(200, 16, 46, 0.18), transparent 55%);
    pointer-events: none;
}

.biz-top .num {
    position: absolute;
    top: 18px;
    left: 24px;
    font-size: 64px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.12);
    letter-spacing: 0.02em;
    user-select: none;
}

.biz-head {
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 54px;
    z-index: 2;
}
.biz-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 10px;
    color: #fff;
}
.biz-title small {
    display: block;
    font-size: 11px;
    letter-spacing: 0.18em;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 6px;
    text-transform: uppercase;
}
.biz-title h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 0;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

/* 网络光点装饰 */
.biz-net {
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    pointer-events: none;
    z-index: 1;
}
.biz-net .dot {
    position: absolute;
    left: var(--left);
    top: var(--top);
    width: var(--s);
    height: var(--s);
    background: #fff;
    border-radius: 50%;
    opacity: var(--o);
}
.biz-net .line {
    position: absolute;
    height: 1px;
    background: rgba(255, 255, 255, 0.15);
    transform-origin: left center;
}
.biz-net .l1 { left: 10%; top: 20%; width: 45%; transform: rotate(15deg); }
.biz-net .l2 { left: 40%; top: 55%; width: 55%; transform: rotate(-8deg); background: rgba(200, 16, 46, 0.22); }
.biz-net .l3 { left: 25%; top: 75%; width: 40%; transform: rotate(22deg); }

/* 下半：白色描述区 + 标签 + 红色链接 */
.biz-body {
    padding: 24px 28px 26px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    flex: 1;
}
.biz-body p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--ink-500);
    margin: 0;
}
.biz-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.biz-tags span {
    font-size: 12px;
    color: var(--ink-400);
    background: var(--bg-canvas);
    border: 1px solid var(--ink-100);
    padding: 6px 12px;
    border-radius: 999px;
    letter-spacing: 0.04em;
}
.biz-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--red-primary);
    font-weight: 600;
    text-decoration: none;
    margin-top: auto;
    transition: gap 0.25s ease;
}
.biz-more:hover {
    gap: 10px;
}

/* 每张卡片独立的渐变色调 */
.biz-card.b1 .biz-top { background: linear-gradient(150deg, #25388A 0%, #16204A 60%, #0B1230 100%); }
.biz-card.b2 .biz-top { background: linear-gradient(150deg, #4A1F2E 0%, #2B0F1C 60%, #180611 100%); }
.biz-card.b3 .biz-top { background: linear-gradient(150deg, #1F5244 0%, #103A31 60%, #071F1A 100%); }
.biz-card.b4 .biz-top { background: linear-gradient(150deg, #2A1F5E 0%, #1C1444 60%, #0E0827 100%); }
.biz-card.b5 .biz-top { background: linear-gradient(150deg, #6A3D14 0%, #3D210A 60%, #1E0F04 100%); }
.biz-card.b6 .biz-top { background: linear-gradient(150deg, #4D1A33 0%, #2F0E21 60%, #15050E 100%); }

@media (max-width: 1100px) {
    .biz-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .biz-grid { grid-template-columns: 1fr; }
    .biz-top { padding: 26px 22px 30px; }
    .biz-top .num { font-size: 52px; }
    .biz-body { padding: 20px 22px 22px; }
    .biz-title h3 { font-size: 18px; }
}

/* ============ Cases (大案例展示卡) ============ */
.cases-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 12px;
}
.cases-head .title h2 {
    font-size: 36px;
    margin: 0;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.cases-head .title small {
    display: block;
    color: var(--red-primary);
    letter-spacing: 0.32em;
    font-size: 11.5px;
    margin-bottom: 12px;
    font-weight: 600;
}
.cases-head .title p {
    color: var(--ink-400);
    font-size: 14px;
    margin: 12px 0 0;
    max-width: 560px;
    line-height: 1.8;
}

.case-list { display: flex; flex-direction: column; gap: 20px; }

.case-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    background: #141414;
    box-shadow: 0 8px 24px rgba(0,0,0,0.18);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.case-item:hover { box-shadow: 0 18px 40px rgba(0,0,0,0.4); transform: translateY(-2px); }

.case-media {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
}

/* 顶部图片区 */
.case-img {
    position: relative;
    overflow: hidden;
    min-height: 320px;
    background-color: #1e2a40;
    background-size: cover;
    background-position: center 20%;
    background-repeat: no-repeat;
    transition: transform 0.8s ease;
}
.case-item:hover .case-img { transform: scale(1.03); }
.case-img::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(10,10,20,0.55) 0%, rgba(10,10,20,0.15) 45%, rgba(10,10,20,0.0) 100%);
    pointer-events: none;
    z-index: 1;
}
.case-img::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 70%;
    background: linear-gradient(180deg, transparent 0%, rgba(8,8,12,0.82) 78%, rgba(8,8,12,0.92) 100%);
    z-index: 2;
    pointer-events: none;
}
.case-img img {
    width: 100%; height: 100%; object-fit: cover; position: relative; z-index: 0;
}

/* 红色 Badge */
.case-badge {
    position: absolute;
    top: 28px;
    left: 28px;
    z-index: 5;
    background: var(--red-primary);
    color: #fff;
    padding: 7px 16px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 999px;
    letter-spacing: 0.08em;
    box-shadow: 0 4px 14px rgba(224,32,32,0.3);
}

/* 左下角标题 */
.case-img-title {
    position: absolute;
    left: 28px;
    right: 28px;
    bottom: 28px;
    z-index: 5;
    color: #fff;
    max-width: 760px;
}
.case-img-title h3 {
    font-size: 34px;
    font-weight: 700;
    margin: 0 0 10px 0;
    letter-spacing: -0.015em;
    line-height: 1.2;
    text-shadow: 0 2px 18px rgba(0,0,0,0.45);
}
.case-img-title p {
    font-size: 14px;
    margin: 0;
    color: rgba(255,255,255,0.88);
    line-height: 1.7;
    text-shadow: 0 1px 6px rgba(0,0,0,0.4);
}

/* 底部内容区 — 高端分层版 */
.case-text {
    position: relative;
    padding: 28px 0 8px;
    color: #1a1a1a;
    background: #ffffff;
    display: flex;
    flex-direction: column;
    gap: 22px;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.case-desc {
    color: #2a2a2a;
    font-size: 14px;
    line-height: 1.8;
    margin: 0;
    letter-spacing: 0.02em;
    font-weight: 500;
    padding: 0 36px;
    position: relative;
}

/* 统计区 */
.case-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    margin: 0 36px;
    padding: 22px 0 6px;
    border-top: 1px solid rgba(0,0,0,0.06);
}
.case-stats .stat-col {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 6px 28px 14px;
    gap: 10px;
}
.case-stats .stat-col::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    bottom: 12px;
    width: 2px;
    background: linear-gradient(180deg, var(--red-primary) 0%, rgba(224,32,32,0.15) 100%);
    border-radius: 2px;
}
.case-stats .stat-col:first-child { padding-left: 28px; }
.case-stats .stat-col:first-child::before { display: none; }
.case-stats .stat-col:last-child { border-right: 0; }

/* 顶部小标签（品牌价值） */
.case-stats .stat-label {
    color: rgba(0,0,0,0.55);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    margin: 0;
    line-height: 1;
    font-weight: 500;
}

/* 数字行：小数字 → 大数字 */
.case-stats .stat-row {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: nowrap;
    white-space: nowrap;
}
.case-stats .stat-row span {
    color: rgba(0,0,0,0.4);
    font-size: 13px;
    font-weight: 400;
    font-variant-numeric: tabular-nums;
}
.case-stats .stat-row .arrow {
    color: rgba(224,32,32,0.55);
    font-size: 12px;
    font-weight: 400;
    position: relative;
    top: -1px;
}
.case-stats .stat-row strong {
    color: var(--red-primary);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.01em;
    font-variant-numeric: tabular-nums;
    line-height: 1;
}

@media (max-width: 900px) {
    .case-img { min-height: 220px; }
    .case-img-title h3 { font-size: 22px; }
    .case-text { padding: 24px 0 4px; gap: 16px; }
    .case-desc { padding: 0 22px; font-size: 13.5px; }
    .case-stats { margin: 0 22px; padding: 18px 0 4px; gap: 10px; }
    .case-stats .stat-col { padding: 6px 18px 12px; gap: 8px; }
    .case-stats .stat-col:first-child { padding-left: 18px; }
    .case-stats .stat-row strong { font-size: 18px; }
}
@media (max-width: 520px) {
    .case-stats {
        grid-template-columns: 1fr;
        gap: 4px;
        padding: 18px 0 4px;
    }
    .case-stats .stat-col {
        border-right: 0;
        padding: 10px 0 12px 18px !important;
        border-bottom: 1px solid rgba(0,0,0,0.05);
    }
    .case-stats .stat-col:last-child { border-bottom: 0; padding-bottom: 0; }
}

/* ============ Advantages / 为什么首选集和（高端杂志版）—— 四卡片同类元素垂直对齐 ============ */
.advantages {
    background: #f4f3ef;
    padding-top: 80px;
    padding-bottom: 80px;
}
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    align-items: stretch; /* 让四个卡片撑满整行高度 */
}
.advantages-item {
    position: relative;
    padding: 28px 24px 72px; /* 底部留 72px 给箭头按钮，保证箭头对齐 */
    background: #ffffff;
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: 6px;
    transition: all 0.35s cubic-bezier(0.2, 0.7, 0.2, 1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.advantages-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: 24px;
    right: 24px;
    height: 1px;
    background: linear-gradient(90deg, var(--red-primary) 0%, rgba(224,32,32,0) 100%);
    opacity: 0.9;
}
.advantages-item:hover {
    border-color: rgba(0,0,0,0.12);
    transform: translateY(-4px);
    box-shadow: 0 18px 40px -16px rgba(0,0,0,0.15);
}

/* 顶部：编号/英文 + 签名线 —— 固定高度，所有卡片在同一行显示 */
.advantages-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 22px;
    margin-bottom: 20px;
    flex-shrink: 0;
}
.advantages-item .num {
    font-size: 11px;
    letter-spacing: 0.3em;
    color: var(--red-primary);
    font-weight: 500;
    text-transform: uppercase;
    line-height: 1;
    white-space: nowrap;
}
.advantages-item .num em {
    color: rgba(0,0,0,0.35);
    font-style: normal;
    margin: 0 6px;
}
.advantages-item .icon-sig {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.advantages-item .sig-bar {
    display: inline-block;
    width: 22px;
    height: 1px;
    background: rgba(0,0,0,0.25);
}
.advantages-item .sig-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--red-primary);
}

/* 大图标：统一 32px 高度 + 固定间距 —— 保证四个图标垂直对齐 */
.advantages-item .big-icon {
    position: relative;
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 22px;
    padding-bottom: 10px;
    flex-shrink: 0;
}
.advantages-item .big-icon::before {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 22px;
    height: 2px;
    background: var(--red-primary);
    opacity: 0.95;
}
.advantages-item .big-icon::after {
    content: "";
    position: absolute;
    left: 24px;
    bottom: 0;
    width: 2px;
    height: 2px;
    background: #0c0c0c;
}
.advantages-item .big-icon svg {
    width: 32px;
    height: 32px;
    display: block;
    color: #0c0c0c;
}

/* 标题：固定行高 + 2 行最大高度，让四个卡片的标题对齐 */
.advantages-item h3 {
    font-size: 17px;
    line-height: 1.4;
    margin: 0 0 12px;
    color: #0c0c0c;
    font-weight: 600;
    letter-spacing: 0.02em;
    height: calc(17px * 1.4 * 2); /* 最多 2 行 —— 四个卡片的标题区高度一致 */
    flex-shrink: 0;
}

/* 描述文字：弹性填充剩余空间，让底部箭头对齐 */
.advantages-item p {
    font-size: 13.5px;
    color: rgba(0,0,0,0.55);
    line-height: 1.8;
    margin: 0;
    letter-spacing: 0.01em;
    flex: 1; /* 撑开内容空间 —— 使箭头在四卡片上位于同一绝对高度 */
}

/* 右下箭头：绝对定位，四卡片位置完全一致 */
.advantages-item .arrow {
    position: absolute;
    right: 24px;
    bottom: 24px;
    width: 32px;
    height: 32px;
    border: 1px solid rgba(0,0,0,0.15);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: rgba(0,0,0,0.55);
    font-size: 12px;
    font-weight: 400;
    transition: all 0.3s ease;
    background: #fff;
}
.advantages-item:hover .arrow {
    background: var(--red-primary);
    color: #fff;
    border-color: var(--red-primary);
    transform: translateX(3px);
}

@media (max-width: 1000px) {
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
    .advantages-grid { grid-template-columns: 1fr; gap: 14px; }
    .advantages-item { padding: 24px 20px 64px; min-height: auto; }
    .advantages-item h3 { height: auto; }
}

/* ============ Hub / 企业动态 · 知识库 · 社区内容（高端杂志版 · 三栏对齐） ============ */
.hub-section {
    background: #ffffff;
    padding-top: 120px;
    padding-bottom: 120px;
    position: relative;
}
.hub-section::before {
    /* 左侧极细红色装饰线 — 竖向章节标记 */
    content: "";
    position: absolute;
    top: 120px;
    left: 5%;
    width: 1px;
    height: 24px;
    background: var(--red-primary);
    opacity: 0.9;
}
.hub-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border-top: 1px solid rgba(0,0,0,0.12);
    border-bottom: 1px solid rgba(0,0,0,0.12);
    align-items: stretch;
}
.hub-column {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 42px 36px 36px;
    border-right: 1px solid rgba(0,0,0,0.08);
    transition: background 0.4s ease;
}
.hub-column:last-child {
    border-right: 0;
}
.hub-column::before {
    /* 每个栏的右上角「§」风格装饰红点 */
    content: "";
    position: absolute;
    top: 18px;
    right: 20px;
    width: 3px;
    height: 3px;
    background: var(--red-primary);
    opacity: 0.8;
}
.hub-column::after {
    /* 左下角细横装饰线 — 呼应整体书背风格 */
    content: "";
    position: absolute;
    left: 36px;
    bottom: 18px;
    width: 28px;
    height: 1px;
    background: rgba(0,0,0,0.12);
}
.hub-column:hover {
    background: #fcfbf9;
}

/* 栏头：固定高度 — 保证三栏的标题与 CTA 对齐 */
.hub-head {
    display: flex;
    flex-direction: column;
    flex: 0 0 auto; /* 不压缩也不拉伸，占据必要空间 */
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(0,0,0,0.08);
}
.hub-head-top {
    display: grid;
    grid-template-columns: auto 1fr; /* 左侧文字容器 + 右侧装饰线 */
    align-items: center;
    column-gap: 12px;
    margin-bottom: 18px;
    height: 16px; /* 固定高度 — 三栏对齐 */
}
.hub-head-left {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
    flex-shrink: 0;
}
.hub-head-line {
    height: 1px;
    background: rgba(0,0,0,0.12);
    min-width: 1px;
}
.hub-head-top small {
    display: inline-block;
    font-size: 10px;
    letter-spacing: 0.25em;
    color: var(--red-primary);
    font-weight: 500;
    white-space: nowrap;
    flex-shrink: 0;
}
.hub-head-main {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
    min-height: 110px; /* 保证三栏的标题块高度一致 */
}
.hub-head-main h3 {
    font-size: 26px;
    line-height: 1.25;
    margin: 0;
    color: #0c0c0c;
    font-weight: 300;
    letter-spacing: -0.01em;
}
.hub-head-main p {
    font-size: 13px;
    line-height: 1.85;
    color: rgba(0,0,0,0.55);
    margin: 0;
    letter-spacing: 0.02em;
}
.hub-cta {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: #0c0c0c;
    padding: 14px 18px;
    background: transparent;
    border: 1px solid rgba(0,0,0,0.15);
    transition: all 0.3s ease;
    letter-spacing: 0.15em;
    font-weight: 500;
    width: 100%;
}
.hub-cta .cta-arrow {
    display: inline-block;
    font-size: 14px;
    color: var(--red-primary);
    transition: transform 0.3s ease;
    margin-left: 6px;
}
.hub-cta:hover {
    background: #0c0c0c;
    color: #fff;
    border-color: #0c0c0c;
}
.hub-cta:hover .cta-arrow {
    color: #fff;
    transform: translateX(4px);
}

/* 列表 — flex:1 撑满剩余高度，三栏列表起点一致 */
.hub-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    flex: 1;
    justify-content: flex-start;
}
.hub-item {
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 0;
    height: 62px; /* 固定高度 — 三栏每条目等高 */
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: background 0.3s ease, padding 0.3s ease;
    box-sizing: border-box;
}
.hub-item:last-child {
    border-bottom: 0;
}
.hub-item:hover {
    padding-left: 6px;
}

/* 编号 — 浅灰小数字，等宽对齐 */
.hub-item-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    font-size: 12px;
    color: rgba(0,0,0,0.35);
    font-weight: 400;
    letter-spacing: 0.05em;
    font-variant-numeric: tabular-nums;
    flex-shrink: 0;
    transition: color 0.3s ease;
}
.hub-item:hover .hub-item-num {
    color: var(--red-primary);
}

/* 中间信息区 */
.hub-item-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.hub-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    height: 16px; /* 固定高度 — 三栏的元信息对齐 */
    margin-bottom: 4px;
    font-size: 11px;
    letter-spacing: 0.1em;
}
.hub-date {
    color: rgba(0,0,0,0.5);
    font-variant-numeric: tabular-nums;
}
.hub-tag {
    color: var(--red-primary);
    font-weight: 500;
    font-style: normal;
}

/* 标题 — 高端字体排印，单行省略 */
.hub-title {
    display: block;
    font-size: 15px;
    line-height: 1.4;
    height: 21px; /* 固定高度 — 三栏标题基线对齐 */
    color: #0c0c0c;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: color 0.25s ease;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.hub-item:hover .hub-title {
    color: var(--red-primary);
}

/* 右侧箭头 */
.hub-item-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    color: rgba(0,0,0,0.3);
    font-size: 14px;
    font-weight: 300;
    flex-shrink: 0;
    transition: color 0.3s ease, transform 0.3s ease;
}
.hub-item:hover .hub-item-arrow {
    color: var(--red-primary);
    transform: translateX(4px);
}

@media (max-width: 1000px) {
    .hub-section { padding-top: 80px; padding-bottom: 80px; }
    .hub-grid { grid-template-columns: 1fr; gap: 0; }
    .hub-column { border-right: 0; border-bottom: 1px solid rgba(0,0,0,0.08); padding: 32px 24px 28px; }
    .hub-head-main { min-height: auto; }
    .hub-head-main h3 { font-size: 22px; }
    .hub-item { height: auto; }
}
@media (max-width: 560px) {
    .hub-section { padding-top: 60px; padding-bottom: 60px; }
    .hub-column { padding: 28px 20px 24px; }
    .hub-head-main h3 { font-size: 20px; }
    .hub-title { font-size: 14px; white-space: normal; line-height: 1.6; height: auto; }
    .hub-item { padding: 14px 0; height: auto; }
    .hub-item:hover { padding-left: 4px; }
}

/* ============ Knowledge 知识中心 ============ */
.knowledge {
    background:
        linear-gradient(120deg, #111 0%, #1c1c1e 55%, #2c0a12 100%);
    color: #fff;
    border-radius: var(--radius-xl);
    padding: 64px;
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 56px;
    align-items: stretch;
    position: relative;
    overflow: hidden;
}
.knowledge::before {
    content: "";
    position: absolute;
    top: -120px;
    right: -120px;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(200,16,46,0.22), transparent 60%);
    pointer-events: none;
}

.knowledge-main {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding-right: 24px;
}
.knowledge-main small {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 11.5px;
    letter-spacing: 0.32em;
    color: rgba(255,255,255,0.55);
    font-weight: 600;
    font-family: var(--font-mono);
    margin-bottom: 28px;
}
.knowledge-main small::before {
    content: "";
    width: 28px; height: 1px;
    background: var(--red-primary);
}
.knowledge-main h3 {
    font-size: 44px;
    line-height: 1.15;
    margin: 0 0 20px;
    color: #fff;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.knowledge-main p {
    font-size: 14.5px;
    color: rgba(255,255,255,0.72);
    line-height: 1.95;
    margin: 0 0 36px;
}
.knowledge-main .btn {
    background: #fff;
    color: var(--black);
    align-self: flex-start;
    padding: 14px 28px;
}
.knowledge-main .btn:hover {
    background: var(--red-primary);
    color: #fff;
    transform: translateY(-1px);
}

.knowledge-list {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    align-content: start;
}
.knowledge-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 24px 22px;
    border-radius: var(--radius);
    transition: all 0.3s ease;
}
.knowledge-card:hover {
    background: rgba(255,255,255,0.07);
    border-color: rgba(200,16,46,0.5);
}
.knowledge-card .tag {
    display: inline-block;
    font-size: 10.5px;
    letter-spacing: 0.2em;
    background: var(--red-primary);
    color: #fff;
    padding: 4px 10px;
    border-radius: 999px;
    margin-bottom: 16px;
    font-family: var(--font-mono);
    font-weight: 500;
}
.knowledge-card h4 {
    font-size: 16px;
    color: #fff;
    line-height: 1.45;
    margin: 0 0 8px;
    font-weight: 600;
}
.knowledge-card p {
    font-size: 12.5px;
    color: rgba(255,255,255,0.6);
    margin: 0 0 16px;
    line-height: 1.75;
}
.knowledge-card a.btn-ghost {
    color: rgba(255,255,255,0.85);
    font-size: 12px;
}
.knowledge-card a.btn-ghost:hover { color: var(--red-primary); }

@media (max-width: 900px) {
    .knowledge { grid-template-columns: 1fr; padding: 40px 28px; }
    .knowledge-main { padding-right: 0; }
    .knowledge-main h3 { font-size: 28px; }
    .knowledge-list { grid-template-columns: 1fr; }
}

/* ============ Community 国牌社区 CTA ============ */
.community-cta {
    margin-top: 56px;
    padding: 56px 64px;
    background: #fff;
    border: 1px solid var(--ink-100);
    color: var(--black);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-1);
}
.community-cta::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px;
    background: var(--red-primary);
}
.community-cta h3 {
    font-size: 28px;
    margin: 6px 0 8px;
    color: var(--black);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.25;
}
.community-cta p {
    color: var(--ink-500);
    font-size: 14px;
    margin: 0;
    line-height: 1.8;
}
.community-cta small {
    font-size: 11.5px;
    letter-spacing: 0.32em;
    color: var(--red-primary);
    font-weight: 600;
}
.community-cta .btn {
    background: var(--red-primary);
    color: #fff;
    padding: 15px 30px;
    flex-shrink: 0;
}
.community-cta .btn:hover {
    background: var(--black);
    transform: translateY(-1px);
    box-shadow: 0 10px 24px -8px rgba(0,0,0,0.35);
}

@media (max-width: 768px) {
    .community-cta { flex-direction: column; text-align: left; padding: 40px 28px; align-items: flex-start; }
    .community-cta h3 { font-size: 22px; }
}

/* ============ Footer（高端风格） ============ */
.footer {
    background: #1a1414; /* 极深暖棕黑 */
    color: #9a9a9a;
    margin-top: 0;
    padding: 0;
    position: relative;
}

/* 顶部红色 banner */
.footer-cta {
    background: #c8102e;
    color: #fff;
    padding: 48px 0 56px;
    text-align: center;
    position: relative;
}
.footer-cta h3 {
    color: #fff;
    font-size: 22px;
    font-weight: 500;
    margin: 0 0 14px;
    letter-spacing: 0.18em;
}
.footer-cta .cta-label {
    font-size: 12px;
    color: rgba(255,255,255,0.8);
    margin: 4px 0;
    letter-spacing: 0.1em;
}
.footer-cta .cta-phone {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 500;
    letter-spacing: 0.05em;
    margin: 4px 0 4px;
}
.footer-cta .cta-address {
    font-size: 12px;
    color: rgba(255,255,255,0.75);
    margin: 8px 0 22px;
    letter-spacing: 0.08em;
}
.footer-cta .cta-btn {
    display: inline-block;
    background: #fff;
    color: #c8102e;
    padding: 10px 30px;
    font-size: 13px;
    letter-spacing: 0.2em;
    font-weight: 500;
    border-radius: 999px;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.footer-cta .cta-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px -8px rgba(0,0,0,0.35);
}

/* 主体 */
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 56px;
    padding: 56px 0 48px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

/* 品牌信息（使用 .brand 统一风格，深色底适配） */
.footer .brand {
    margin-bottom: 18px;
}
.footer .brand .brand-en,
.footer .brand .brand-cn {
    color: #fff;
}
.footer .brand .brand-sep .sep {
    background: #fff;
}
.footer-brand-desc {
    color: #888;
    font-size: 13px;
    line-height: 1.9;
    margin: 0 0 24px;
    max-width: 380px;
}
.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 10px;
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 12.5px;
    color: #777;
    letter-spacing: 0.05em;
}
.footer-contact li {
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-contact li svg {
    color: #c8102e;
    flex-shrink: 0;
}

/* 分类标题 */
.footer h4 {
    color: #fff;
    font-size: 13px;
    margin: 0 0 20px;
    letter-spacing: 0.25em;
    font-weight: 500;
    text-transform: none;
    position: relative;
    padding-bottom: 14px;
}
.footer h4::after {
    content: "";
    position: absolute;
    left: 0; bottom: 0;
    width: 32px;
    height: 1px;
    background: #c8102e;
}
.footer ul { display: flex; flex-direction: column; gap: 10px; list-style: none; padding: 0; margin: 0; }
.footer a { color: #9a9a9a; font-size: 13px; transition: color 0.2s; letter-spacing: 0.04em; }
.footer a:hover { color: #fff; }

/* 品牌升级侧 */
.upgrade-desc {
    color: #888;
    font-size: 12.5px;
    line-height: 1.9;
    margin: 0 0 16px;
    max-width: 260px;
}
.upgrade-btn {
    display: inline-block;
    background: #c8102e;
    color: #fff;
    padding: 10px 22px;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.2em;
    border-radius: 999px;
    transition: background 0.2s ease, transform 0.2s ease;
    margin-bottom: 20px;
}
.upgrade-btn:hover {
    background: #b00e2a;
    transform: translateY(-1px);
}
.qrcode-label {
    color: #777;
    font-size: 11px;
    letter-spacing: 0.15em;
    margin: 0 0 8px;
}
.qrcode {
    width: 72px;
    height: 72px;
    background:
        linear-gradient(135deg, #2a2a2a 25%, transparent 25%),
        linear-gradient(225deg, #2a2a2a 25%, transparent 25%),
        linear-gradient(315deg, #2a2a2a 25%, transparent 25%),
        linear-gradient(45deg, #2a2a2a 25%, transparent 25%),
        #333;
    background-size: 8px 8px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 2px;
    position: relative;
}
.qrcode::before, .qrcode::after {
    content: "";
    position: absolute;
    width: 14px;
    height: 14px;
    background: #000;
    border: 2px solid #fff;
}
.qrcode::before { top: 4px; left: 4px; }
.qrcode::after { top: 4px; right: 4px; }

/* 底部版权 */
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    font-size: 11.5px;
    color: #666;
    flex-wrap: wrap;
    gap: 10px;
    letter-spacing: 0.05em;
}
.footer-bottom .fb-credit {
    display: inline-flex;
    gap: 18px;
}
.footer-bottom .fb-credit a {
    color: #777;
    font-size: 11.5px;
}
.footer-bottom .fb-credit a:hover {
    color: #fff;
}

@media (max-width: 960px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
    .footer-cta h3 { font-size: 20px; }
}
@media (max-width: 560px) {
    .footer-cta { padding: 36px 0 44px; }
    .footer-cta h3 { font-size: 18px; letter-spacing: 0.14em; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; padding: 40px 0 32px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .footer-bottom .fb-credit { gap: 12px; flex-wrap: wrap; justify-content: center; }
}

/* ============ Page hero (内页通用) ============ */
.page-hero {
    padding: 80px 0 56px;
    background:
        linear-gradient(120deg, #fff, #f5f5f7 60%);
    border-bottom: 1px solid var(--ink-100);
    position: relative;
    overflow: hidden;
}
.page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, rgba(0,0,0,0.035) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0,0,0,0.035) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,0.5), transparent);
    -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.5), transparent);
    pointer-events: none;
}

.page-hero-text {
    position: relative;
    z-index: 1;
}
.page-hero-text small {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 11.5px;
    letter-spacing: 0.32em;
    color: var(--red-primary);
    font-weight: 600;
}
.page-hero-text small::before {
    content: "";
    width: 28px; height: 1px;
    background: var(--red-primary);
}
.page-hero-text h1 {
    font-size: clamp(30px, 4vw, 52px);
    margin: 20px 0 16px;
    color: var(--black);
    font-weight: 700;
    letter-spacing: -0.025em;
    line-height: 1.15;
}
.page-hero-text p {
    color: var(--ink-500);
    font-size: 15px;
    max-width: 720px;
    line-height: 1.9;
    margin: 0;
}

/* 内页：业务版块条目 */
.biz-section-row {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 64px;
    align-items: stretch;
    padding: 72px 0;
    border-bottom: 1px solid var(--ink-100);
}
.biz-section-row:last-child { border-bottom: 0; }

.biz-section-text small {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 11.5px;
    letter-spacing: 0.32em;
    color: var(--red-primary);
    font-weight: 600;
    margin-bottom: 20px;
}
.biz-section-text small::before {
    content: "";
    width: 24px; height: 1px;
    background: var(--red-primary);
}
.biz-section-text h2 {
    font-size: 34px;
    margin: 0 0 16px;
    color: var(--black);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}
.biz-section-text p {
    color: var(--ink-500);
    line-height: 1.9;
    font-size: 15px;
    margin-bottom: 24px;
}
.biz-section-text > div.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 24px;
}
.biz-section-text > div.tags span {
    background: var(--red-50);
    color: var(--red-primary);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 12.5px;
}

.biz-section-media {
    border-radius: var(--radius-xl);
    overflow: hidden;
    min-height: 320px;
    box-shadow: var(--shadow-2);
    position: relative;
}
.biz-section-media > div {
    padding: 40px;
    color: #fff;
    height: 100%;
    min-height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.biz-section-media > div::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(to right, rgba(255,255,255,0.06) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,0.06) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(circle at 60% 40%, #000, transparent 80%);
    -webkit-mask-image: radial-gradient(circle at 60% 40%, #000, transparent 80%);
}
.biz-section-media h3 {
    font-size: 28px;
    margin: 10px 0 12px;
    color: #fff;
    font-weight: 600;
    letter-spacing: -0.015em;
    position: relative;
    z-index: 1;
}

@media (max-width: 900px) {
    .biz-section-row { grid-template-columns: 1fr; gap: 28px; padding: 48px 0; }
    .biz-section-text h2 { font-size: 24px; }
}
/* ============ 国牌一号页 page-hero 的覆盖样式统一在 assets/css/guochao.css 中定义 ============ */