/* =========================================================
   灯下鼎办 · 商务咨询服务部
   设计语言：深海藏青 × 香槟金  |  高级商务风
   ========================================================= */

/* ---------- CSS 变量 ---------- */
:root {
    --navy:        #0D1B2A;
    --navy-mid:    #1A2F45;
    --navy-light:  #243B55;
    --gold:        #C9A84C;
    --gold-light:  #E8C97A;
    --gold-pale:   #F5E9C8;
    --white:       #FFFFFF;
    --off-white:   #F8F9FA;
    --gray-100:    #F0F2F5;
    --gray-200:    #E4E8EE;
    --gray-400:    #9BA8B8;
    --gray-600:    #5A6A7E;
    --gray-800:    #2C3A4A;
    --text-main:   #1A2535;
    --text-sub:    #4A5A6E;
    --shadow-sm:   0 2px 12px rgba(13,27,42,0.08);
    --shadow-md:   0 8px 32px rgba(13,27,42,0.12);
    --shadow-lg:   0 20px 60px rgba(13,27,42,0.18);
    --radius-sm:   8px;
    --radius-md:   14px;
    --radius-lg:   20px;
    --radius-xl:   28px;
    --transition:  0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --font-serif:  'Noto Serif SC', 'STSong', Georgia, serif;
    --font-sans:   'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-sans);
    background: var(--off-white);
    color: var(--text-main);
    line-height: 1.7;
    min-height: 100vh;
}

/* =========================================================
   导航栏
   ========================================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 900;
    background: rgba(13, 27, 42, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(201, 168, 76, 0.2);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    color: var(--navy);
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 8px;
    flex-shrink: 0;
}

.brand-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 0.05em;
}

.nav-tagline {
    font-size: 0.78rem;
    color: var(--gold);
    letter-spacing: 0.15em;
    font-weight: 500;
}

/* =========================================================
   Hero 首屏
   ========================================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--navy);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(201,168,76,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(201,168,76,0.05) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    pointer-events: none;
}

.hero-glow-1 {
    width: 700px;
    height: 700px;
    top: -200px;
    right: -150px;
    background: radial-gradient(circle, rgba(36,59,85,0.8) 0%, transparent 70%);
}

.hero-glow-2 {
    width: 550px;
    height: 550px;
    bottom: -120px;
    left: -100px;
    background: radial-gradient(circle, rgba(201,168,76,0.1) 0%, transparent 70%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 120px 24px 80px;
    max-width: 860px;
    width: 100%;
    animation: heroFadeUp 0.9s ease both;
}

@keyframes heroFadeUp {
    from { opacity: 0; transform: translateY(36px); }
    to   { opacity: 1; transform: translateY(0); }
}

.hero-badge {
    display: inline-block;
    padding: 6px 22px;
    border: 1px solid rgba(201,168,76,0.45);
    border-radius: 100px;
    font-size: 0.75rem;
    letter-spacing: 0.22em;
    color: var(--gold);
    margin-bottom: 36px;
    animation: heroFadeUp 0.9s 0.1s ease both;
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 20px;
    animation: heroFadeUp 0.9s 0.2s ease both;
}

.hero-title-main {
    font-family: var(--font-serif);
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    font-weight: 700;
    color: var(--white);
    letter-spacing: 0.06em;
    line-height: 1.2;
}

.hero-title-sub {
    font-size: clamp(1rem, 2.5vw, 1.4rem);
    font-weight: 300;
    color: var(--gold-light);
    letter-spacing: 0.3em;
}

.hero-desc {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    color: rgba(255,255,255,0.6);
    margin-bottom: 48px;
    letter-spacing: 0.05em;
    animation: heroFadeUp 0.9s 0.3s ease both;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 52px;
    flex-wrap: wrap;
    animation: heroFadeUp 0.9s 0.4s ease both;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 12px;
}

.hf-icon {
    color: var(--gold);
    font-size: 0.6rem;
    flex-shrink: 0;
}

.hf-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.hf-text strong {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--white);
    line-height: 1.3;
}

.hf-text span {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.45);
    letter-spacing: 0.05em;
}

.hero-cta {
    display: inline-block;
    padding: 15px 44px;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    color: var(--navy);
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.1em;
    border-radius: 100px;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 4px 24px rgba(201,168,76,0.35);
    animation: heroFadeUp 0.9s 0.5s ease both;
}

.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 36px rgba(201,168,76,0.5);
}

.hero-scroll-hint {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.3);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    animation: heroFadeUp 1s 0.8s ease both;
}

.scroll-arrow {
    width: 1px;
    height: 36px;
    background: linear-gradient(to bottom, rgba(201,168,76,0.6), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.4; transform: scaleY(1); }
    50%       { opacity: 1;   transform: scaleY(1.2); transform-origin: top; }
}

/* =========================================================
   简介条带
   ========================================================= */
.intro-strip {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
}

.intro-strip-inner {
    max-width: 860px;
    margin: 0 auto;
    padding: 48px 32px;
    text-align: center;
}

.intro-strip-inner p {
    font-size: 1.05rem;
    color: var(--text-sub);
    line-height: 1.9;
}

.intro-strip-inner strong {
    color: var(--navy-mid);
    font-weight: 600;
}

/* =========================================================
   服务区域
   ========================================================= */
.services {
    padding: 96px 24px;
    background: var(--off-white);
}

.services-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-label {
    font-size: 0.72rem;
    letter-spacing: 0.28em;
    color: var(--gold);
    font-weight: 600;
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 14px;
    letter-spacing: 0.04em;
}

.section-desc {
    font-size: 0.95rem;
    color: var(--gray-600);
    letter-spacing: 0.02em;
}

/* 服务卡片网格 */
.service-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    align-items: start;
}

/* 单个服务卡片 */
.service-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px 32px 32px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    display: flex;
    flex-direction: column;
}

.card-accent {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
    opacity: 0;
    transition: opacity var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(201,168,76,0.3);
}

.service-card:hover .card-accent {
    opacity: 1;
}

/* 精选卡片 */
.service-card--featured {
    background: var(--navy);
    border-color: rgba(201,168,76,0.4);
    box-shadow: var(--shadow-md);
}

.service-card--featured .card-accent {
    opacity: 1;
}

.service-card--featured:hover {
    box-shadow: 0 24px 72px rgba(13,27,42,0.3);
    border-color: rgba(201,168,76,0.65);
}

.service-tier {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    font-weight: 600;
    color: var(--gray-400);
    margin-bottom: 16px;
    text-transform: uppercase;
}

.service-card--featured .service-tier {
    color: rgba(201,168,76,0.7);
}

.featured-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    color: var(--navy);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: 4px 12px;
    border-radius: 100px;
}

.service-header {
    margin-bottom: 28px;
}

.service-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 14px;
    line-height: 1.4;
    letter-spacing: 0.02em;
}

.service-card--featured .service-header h3 {
    color: var(--white);
}

.price {
    display: flex;
    align-items: baseline;
    gap: 2px;
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--gold);
    line-height: 1;
    font-family: 'Georgia', var(--font-serif);
}

.price-symbol {
    font-size: 1.2rem;
    font-weight: 600;
}

.service-body {
    flex: 1;
    margin-bottom: 28px;
}

.service-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.service-list li {
    font-size: 0.88rem;
    color: var(--text-sub);
    padding: 9px 0 9px 20px;
    position: relative;
    border-bottom: 1px solid var(--gray-100);
    line-height: 1.6;
}

.service-card--featured .service-list li {
    color: rgba(255,255,255,0.65);
    border-bottom-color: rgba(255,255,255,0.08);
}

.service-list li:last-child {
    border-bottom: none;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--gold);
    opacity: 0.7;
}

.buy-btn {
    width: 100%;
    padding: 14px 0;
    background: transparent;
    border: 1.5px solid var(--navy-light);
    border-radius: var(--radius-sm);
    color: var(--navy);
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.buy-btn:hover {
    background: var(--navy);
    border-color: var(--navy);
    color: var(--white);
    transform: none;
}

.service-card--featured .buy-btn {
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    border-color: transparent;
    color: var(--navy);
    box-shadow: 0 4px 20px rgba(201,168,76,0.4);
}

.service-card--featured .buy-btn:hover {
    box-shadow: 0 6px 28px rgba(201,168,76,0.55);
    transform: none;
}

/* =========================================================
   弹窗通用
   ========================================================= */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal[style*="block"] {
    display: flex !important;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(13, 27, 42, 0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    animation: overlayIn 0.3s ease both;
}

@keyframes overlayIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.modal-content {
    position: relative;
    z-index: 1;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 44px 40px 40px;
    width: 90%;
    max-width: 480px;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes modalSlideIn {
    from { opacity: 0; transform: translateY(24px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-close {
    position: absolute;
    top: 18px;
    right: 20px;
    width: 32px;
    height: 32px;
    border: none;
    background: var(--gray-100);
    border-radius: 50%;
    font-size: 0.8rem;
    color: var(--gray-600);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    line-height: 1;
}

.modal-close:hover {
    background: var(--gray-200);
    color: var(--text-main);
}

.modal-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.modal-icon {
    color: var(--gold);
    font-size: 0.75rem;
}

.modal-header h3 {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--navy);
    letter-spacing: 0.03em;
}

.modal-meta {
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--gray-200);
}

#modalService {
    font-size: 0.88rem;
    color: var(--gray-600);
    margin-bottom: 4px;
}

#modalPrice {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--gold);
    font-family: Georgia, var(--font-serif);
    line-height: 1.2;
}

/* 支付按钮 */
.payment-methods {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.payment-btn {
    width: 100%;
    padding: 16px 24px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    letter-spacing: 0.06em;
    font-family: var(--font-sans);
    border: 2px solid transparent;
}

.payment-logo {
    width: 28px;
    height: 28px;
    object-fit: contain;
    border-radius: 4px;
}

.payment-btn.wechat {
    background: #f0faf0;
    color: #07a559;
    border-color: #b7e4c7;
}

.payment-btn.wechat:hover {
    background: #07a559;
    color: var(--white);
    border-color: #07a559;
    box-shadow: 0 4px 20px rgba(7,165,89,0.3);
    transform: translateY(-2px);
}

.payment-btn.alipay {
    background: #f0f5ff;
    color: #1677ff;
    border-color: #bdd7ff;
}

.payment-btn.alipay:hover {
    background: #1677ff;
    color: var(--white);
    border-color: #1677ff;
    box-shadow: 0 4px 20px rgba(22,119,255,0.3);
    transform: translateY(-2px);
}

/* =========================================================
   支付成功弹窗
   ========================================================= */
.success-content {
    text-align: center;
}

.success-icon-wrap {
    margin: 0 auto 20px;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    display: flex;
    align-items: center;
    justify-content: center;
    animation: scaleIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes scaleIn {
    from { transform: scale(0); opacity: 0; }
    to   { transform: scale(1); opacity: 1; }
}

.success-icon {
    font-size: 1.8rem;
    color: var(--navy);
    font-weight: 700;
    line-height: 1;
}

.success-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 24px;
    letter-spacing: 0.04em;
}

.success-info {
    background: var(--gray-100);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 24px;
    text-align: left;
}

.info-row {
    margin-bottom: 16px;
}

.info-row:last-of-type {
    margin-bottom: 0;
}

.info-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--gray-600);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.key-box,
.qq-box {
    background: var(--white);
    border: 1.5px dashed var(--gold);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--navy);
    letter-spacing: 0.08em;
    word-break: break-all;
}

.instructions {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-200);
}

.instructions p {
    font-size: 0.85rem;
    color: var(--text-sub);
    line-height: 1.7;
    margin-bottom: 6px;
}

.note {
    color: var(--gold) !important;
    font-weight: 600 !important;
}

.confirm-btn {
    padding: 14px 48px;
    background: linear-gradient(135deg, var(--navy-mid), var(--navy-light));
    color: var(--white);
    border: none;
    border-radius: 100px;
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.confirm-btn:hover {
    box-shadow: 0 6px 24px rgba(13,27,42,0.3);
    transform: translateY(-2px);
}

/* =========================================================
   页脚
   ========================================================= */
.footer {
    background: var(--navy);
    color: var(--white);
    padding: 64px 32px 0;
    margin-top: 0;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0.5;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 48px;
    padding-bottom: 48px;
    flex-wrap: wrap;
}

.footer-brand {
    flex: 1;
    min-width: 220px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.footer-logo .brand-icon {
    width: 38px;
    height: 38px;
    font-size: 1.1rem;
}

.footer-logo span:last-child {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    letter-spacing: 0.04em;
}

.footer-slogan {
    font-size: 0.82rem;
    color: rgba(201,168,76,0.7);
    letter-spacing: 0.2em;
    padding-left: 2px;
}

.footer-cols {
    display: flex;
    gap: 64px;
    flex-wrap: wrap;
}

.footer-col h5 {
    font-size: 0.72rem;
    letter-spacing: 0.2em;
    color: var(--gold);
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.footer-col p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
    margin-bottom: 8px;
    line-height: 1.7;
    transition: color 0.2s;
}

.footer-col p:hover {
    color: rgba(255,255,255,0.8);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0 24px;
    border-top: 1px solid rgba(255,255,255,0.08);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.25);
    letter-spacing: 0.06em;
}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 900px) {
    .service-cards {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
    }

    .service-card--featured {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-inner {
        padding: 0 20px;
    }

    .nav-tagline {
        display: none;
    }

    .hero-features {
        gap: 24px;
    }

    .services {
        padding: 64px 16px;
    }

    .intro-strip-inner {
        padding: 36px 20px;
    }

    .modal-content {
        padding: 32px 24px 28px;
    }

    .footer {
        padding: 48px 20px 0;
    }

    .footer-content {
        flex-direction: column;
        gap: 32px;
        padding-bottom: 36px;
    }

    .footer-cols {
        gap: 36px;
    }

    .payment-btn {
        padding: 14px 20px;
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: 100px 20px 60px;
    }

    .hero-features {
        flex-direction: column;
        align-items: flex-start;
        padding-left: 16px;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .service-card {
        padding: 28px 22px 24px;
    }

    .modal-content {
        padding: 28px 18px 24px;
        border-radius: var(--radius-lg);
    }

    .confirm-btn {
        width: 100%;
    }
}