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

:root {
    --black: #0e0e0c;
    --gold: #c9a96e;
    --gold-dark: #8b6914;
    --gold-light: #e8d5b0;
    --white: #ffffff;
    --bg-warm: #faf8f5;
    --bg-dark: #111110;
    --text-body: #3a3834;
    --text-mute: #7a7570;
    --border: rgba(201,169,110,0.2);
    --radius: 6px;
    --radius-lg: 12px;
    --shadow-sm: 0 2px 12px rgba(14,14,12,0.06);
    --shadow-md: 0 8px 32px rgba(14,14,12,0.10);
    --shadow-lg: 0 20px 60px rgba(14,14,12,0.14);
    --trans: 0.35s cubic-bezier(0.4,0,0.2,1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Outfit', 'PingFang SC', sans-serif;
    background: var(--white);
    color: var(--black);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.container {
    max-width: 1260px;
    margin: 0 auto;
    padding: 0 40px;
}

/* ============================================================ 导航 ============================================================ */
.nav-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
    box-shadow: 0 1px 0 var(--border);
}

.nav-inner {
    max-width: 1260px;
    margin: 0 auto;
    padding: 0 40px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 55px;
    width: auto;
    display: block;
    object-fit: contain;
}

.logo-vv {
    width: 40px;
    height: 40px;
    background: var(--black);
    color: var(--gold);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 1px;
    flex-shrink: 0;
}

.logo-text {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--black);
    line-height: 1;
    margin-left: 10px;
}

.logo-text em {
    font-style: normal;
    font-size: 12px;
    font-weight: 400;
    color: var(--gold);
    display: block;
    letter-spacing: 2px;
    margin-top: 2px;
    font-family: 'Noto Serif SC', serif;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.5px;
    color: var(--black);
    transition: color var(--trans);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--gold);
    transition: width var(--trans);
}

.nav-links a:hover {
    color: var(--gold);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--gold);
}

.nav-links a.active::after {
    width: 100%;
}

.nav-cta {
    padding: 9px 22px;
    border-radius: var(--radius);
    font-size: 13px !important;
    letter-spacing: 1px;
    transition: background var(--trans) !important;
}

.nav-cta::after {
    display: none !important;
}

.nav-header .nav-links .nav-cta {
    background: var(--black) !important;
    color: var(--white) !important;
}

.nav-header .nav-links .nav-cta:hover {
    background: var(--gold) !important;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--black);
    border-radius: 2px;
    transition: var(--trans);
}

.hamburger.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
    opacity: 0;
}

.hamburger.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
    position: fixed;
    inset: 0;
    background: var(--bg-dark);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    transform: translateX(100%);
    transition: transform var(--trans);
}

.mobile-menu.open {
    transform: translateX(0);
}

.mobile-menu a {
    font-size: 24px;
    font-weight: 600;
    color: var(--white);
    letter-spacing: 3px;
    transition: color var(--trans);
}

.mobile-menu a:hover {
    color: var(--gold);
}

.mobile-close {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 28px;
    color: var(--white);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================================ 图片占位 ============================================================ */
.img-ph {
    position: relative;
    background: linear-gradient(135deg, #f5f0e8 0%, #ede4d4 50%, #e8d5b0 100%);
    border: 1.5px dashed var(--gold);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.img-ph::before {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(45deg, transparent, transparent 18px, rgba(201,169,110,0.07) 18px, rgba(201,169,110,0.07) 19px);
}

.img-ph-label {
    position: absolute;
    bottom: 10px;
    right: 12px;
    font-size: 11px;
    color: var(--gold-dark);
    background: rgba(255,255,255,0.82);
    padding: 2px 8px;
    border-radius: 3px;
    z-index: 2;
}

.img-ph img {
    opacity: 0;
    position: relative;
    z-index: 2;
    transition: opacity 0.5s;
}

.img-ph img.loaded {
    opacity: 1;
}

/* ============================================================ HERO ============================================================ */
.hero {
    min-height: 60vh;
    display: flex;
    align-items: center;
    background: var(--black);
    position: relative;
    overflow: hidden;
    padding-top: 72px;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 80% at 70% 50%, rgba(201,169,110,0.07) 0%, transparent 65%), repeating-linear-gradient(0deg, transparent, transparent 79px, rgba(201,169,110,0.03) 80px);
}

.hero-inner {
    max-width: 1260px;
    margin: 0 auto;
    width: 100%;
    padding: 80px 40px 60px;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-text {
    flex: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 16px;
}

.hero-badge::before {
    content: '';
    width: 28px;
    height: 1px;
    background: var(--gold);
}

.hero-title {
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(34px, 5vw, 52px);
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 14px;
}

.hero-title span {
    color: var(--gold);
}

.hero-sub {
    font-size: 15px;
    color: rgba(255,255,255,0.45);
    max-width: 520px;
    line-height: 1.9;
}

.hero-img {
    flex: 0 0 480px;
}

.hero-img .img-ph {
    height: 380px;
}

/* ============================================================ 通用 SECTION ============================================================ */
.section {
    padding: 88px 0;
}

.section-dark {
    background: var(--black);
}

.section-warm {
    background: var(--bg-warm);
}

.section-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-label::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--gold);
}

.section-title {
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(26px, 3vw, 36px);
    font-weight: 700;
    color: var(--black);
    line-height: 1.3;
    margin-bottom: 12px;
}

.section-warm .section-title {
    color: var(--white);
}

.section-desc {
    font-size: 15px;
    color: var(--text-mute);
    max-width: 600px;
    line-height: 1.8;
}

.section-dark .section-desc {
    color: rgba(255,255,255,0.45);
}

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

.sec-head-center {
    text-align: center;
    margin-bottom: 52px;
}

.sec-head-center .section-desc {
    margin: 0 auto;
}

/* ============================================================ 合作模式 TAB ============================================================ */
.mode-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 48px;
    background: rgba(14,14,12,0.04);
    border-radius: var(--radius-lg);
    padding: 4px;
    max-width: 480px;
}

.mode-tab {
    flex: 1;
    padding: 14px 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-mute);
    border-radius: 8px;
    transition: all var(--trans);
    cursor: pointer;
    text-align: center;
}

.mode-tab.active {
    background: var(--white);
    color: var(--black);
    box-shadow: var(--shadow-sm);
}

.mode-tab:hover:not(.active) {
    color: var(--text-body);
}

.mode-panel {
    display: none;
}

.mode-panel.active {
    display: block;
}

.mode-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.mode-info h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 14px;
    line-height: 1.4;
}

.mode-info p {
    font-size: 14px;
    color: var(--text-mute);
    line-height: 1.9;
    margin-bottom: 24px;
}

.mode-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mode-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.mode-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(201,169,110,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--gold);
    font-size: 16px;
}

.mode-item-text strong {
    font-size: 14px;
    font-weight: 600;
    color: var(--black);
    display: block;
    margin-bottom: 2px;
}

.mode-item-text span {
    font-size: 13px;
    color: var(--text-mute);
}

.mode-img .img-ph {
    height: 400px;
}

/* ============================================================ 经销商加盟 ============================================================ */
.dealer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: stretch;
}

.dealer-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
    overflow: hidden;
}

.dealer-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
}

.dealer-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    transition: all var(--trans);
}

.dealer-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: rgba(201,169,110,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}

.dealer-card h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 20px;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 10px;
}

.dealer-card > p {
    font-size: 13px;
    color: var(--text-mute);
    line-height: 1.8;
    margin-bottom: 24px;
    flex: 1;
}

.dealer-highlight {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
}

.dealer-stat {
    text-align: center;
}

.dealer-stat-num {
    font-size: 28px;
    font-weight: 800;
    color: var(--gold-dark);
    font-family: 'Outfit', sans-serif;
    line-height: 1;
}

.dealer-stat-label {
    font-size: 11px;
    color: var(--text-mute);
    margin-top: 4px;
}

.dealer-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.dealer-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-body);
}

.dealer-feature::before {
    content: '✓';
    color: var(--gold);
    font-weight: 700;
    flex-shrink: 0;
}

.dealer-apply {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
    padding: 12px 28px;
    background: var(--black);
    color: var(--white);
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    transition: background var(--trans);
    align-self: flex-start;
}

.dealer-apply:hover {
    background: var(--gold);
}

.dealer-img {
    margin-top: 32px;
}

.dealer-img .img-ph {
    height: 260px;
    border-radius: var(--radius);
    border-style: solid;
}

/* ============================================================ 加盟支持 ============================================================ */
.support-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.support-card {
    background: var(--bg-dark);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: transform var(--trans), box-shadow var(--trans);
}

.support-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(201,169,110,0.08) 0%, transparent 70%);
}

.support-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(201,169,110,0.12);
}

.support-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: rgba(201,169,110,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
}

.support-card h4 {
    font-family: 'Noto Serif SC', serif;
    font-size: 17px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 10px;
}

.support-card p {
    font-size: 13px;
    color: rgba(255,255,255,0.4);
    line-height: 1.8;
}

.support-tag {
    display: inline-block;
    margin-top: 16px;
    padding: 5px 14px;
    border: 1px solid rgba(201,169,110,0.3);
    border-radius: 20px;
    font-size: 11px;
    color: var(--gold);
    letter-spacing: 0.5px;
}

/* ============================================================ 为什么选VICVIK ============================================================ */
.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.why-card {
    text-align: center;
    padding: 36px 20px;
}

.why-num {
    font-family: 'Outfit', sans-serif;
    font-size: 52px;
    font-weight: 800;
    color: var(--gold);
    line-height: 1;
    margin-bottom: 8px;
    opacity: 0.9;
}

.why-unit {
    font-size: 14px;
    color: rgba(255,255,255,0.5);
    margin-bottom: 12px;
}

.why-card h4 {
    font-family: 'Noto Serif SC', serif;
    font-size: 16px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}

.why-card p {
    font-size: 13px;
    color: rgba(255,255,255,0.35);
    line-height: 1.7;
}

/* ============================================================ 合作流程 ============================================================ */
.process-track {
    display: flex;
    align-items: flex-start;
    gap: 0;
    position: relative;
}

.process-track::before {
    content: '';
    position: absolute;
    top: 36px;
    left: 48px;
    right: 48px;
    height: 1px;
    background: rgba(201,169,110,0.2);
}

.process-step {
    flex: 1;
    text-align: center;
    position: relative;
    padding: 0 16px;
}

.process-num {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--white);
    border: 2px solid rgba(201,169,110,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-family: 'Outfit', sans-serif;
    font-size: 22px;
    font-weight: 800;
    color: var(--gold);
    transition: all var(--trans);
    position: relative;
    z-index: 1;
}

.process-step:hover .process-num {
    background: var(--gold);
    color: var(--white);
    border-color: var(--gold);
    transform: scale(1.08);
}

.process-step h5 {
    font-family: 'Noto Serif SC', serif;
    font-size: 15px;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 6px;
}

.process-step p {
    font-size: 12px;
    color: var(--text-mute);
    line-height: 1.7;
}

/* ============================================================ CTA ============================================================ */
.cta-section {
    background: var(--black);
    padding: 30px 0;
    text-align: center;
}

.cta-label {
    font-size: 11px;
    letter-spacing: 3px;
    color: var(--gold);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.cta-title {
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(24px, 3.5vw, 38px);
    color: var(--white);
    font-weight: 700;
    margin-bottom: 14px;
}

.cta-sub {
    font-size: 42px;
    color: rgb(174 134 81);
    margin-bottom: 36px;
}

.cta-btn {
    display: inline-block;
    padding: 15px 40px;
    background: var(--gold);
    color: var(--white);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1.5px;
    transition: background var(--trans);
}

.cta-btn:hover {
    background: var(--gold-dark);
}

/* ============================================================ 咨询表单 ============================================================ */
.form-section {
    background: var(--bg-warm);
    padding: 72px 0;
}

.form-card {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: var(--shadow-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-row-full {
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-body);
    letter-spacing: 0.3px;
}

.form-group input, .form-group select, .form-group textarea {
    padding: 12px 16px;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    color: var(--black);
    background: var(--white);
    transition: border-color var(--trans), box-shadow var(--trans);
    outline: none;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(201,169,110,0.12);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-submit {
    width: 100%;
    padding: 15px;
    background: var(--black);
    color: var(--white);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1.5px;
    cursor: pointer;
    border: none;
    font-family: inherit;
    transition: background var(--trans);
    margin-top: 8px;
}

.form-submit:hover {
    background: var(--gold);
}

.form-tip {
    font-size: 12px;
    color: var(--text-mute);
    text-align: center;
    margin-top: 12px;
}

/* ============================================================ FOOTER ============================================================ */
.footer {
    background: var(--bg-dark);
    padding: 60px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-brand .logo-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-brand .logo-vv-sm {
    width: 36px;
    height: 36px;
    background: var(--gold);
    color: var(--black);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 800;
}

.footer-brand-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 1px;
}

.footer-brand-name em {
    display: block;
    font-style: normal;
    font-size: 11px;
    color: var(--gold);
    letter-spacing: 2px;
    margin-top: 2px;
}

.footer-desc {
    font-size: 13px;
    color: rgba(255,255,255,0.35);
    line-height: 1.8;
    max-width: 260px;
}

.footer-col h5 {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    color: rgba(255,255,255,0.4);
    text-transform: uppercase;
    margin-bottom: 16px;
}

.footer-col a {
    display: block;
    font-size: 13px;
    color: rgba(255,255,255,0.55);
    margin-bottom: 10px;
    transition: color var(--trans);
}

.footer-col a:hover {
    color: var(--gold);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copy {
    font-size: 12px;
    color: rgba(255,255,255,0.25);
}

/* ============================================================ 响应式 ============================================================ */
@media (max-width: 900px) {
    .container, .nav-inner, .hero-inner, .tabs-inner {
        padding-left: 20px;
        padding-right: 20px;
    }

    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero-inner {
        flex-direction: column;
        gap: 32px;
    }

    .hero-img {
        flex: none;
        width: 100%;
    }

    .mode-content {
        grid-template-columns: 1fr;
    }

    .dealer-grid {
        grid-template-columns: 1fr;
    }

    .support-grid, .why-grid {
        grid-template-columns: 1fr 1fr;
    }

    .process-track {
        flex-wrap: wrap;
        gap: 32px;
    }

    .process-track::before {
        display: none;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .form-card {
        padding: 28px 20px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .support-grid, .why-grid, .dealer-features {
        grid-template-columns: 1fr;
    }

    .mode-tabs {
        flex-direction: column;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
}