/*
 * 广州龙狮营销策划有限公司 官网主样式表
 * 设计方向：创意营销型 Agency 视觉
 */

:root {
    --color-ink: #18181B;
    --color-ink-strong: #0A0A0D;
    --color-muted: #71717A;
    --color-line: #E4E4E7;
    --color-surface: #F4F4F5;
    --color-surface-strong: #EDEEF0;
    --color-white: #FFFFFF;
    --color-accent: #EA580C;
    --color-accent-dark: #C2410C;
    --color-blue: #0EA5E9;
    --color-blue-dark: #0284C7;

    --font-display: 'ZCOOL KuHei', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-body: 'Source Han Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;

    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-5: 48px;
    --space-6: 64px;
    --space-7: 96px;

    --radius-sm: 4px;
    --radius-md: 8px;

    --shadow-sm: 0 6px 18px rgba(24, 24, 27, 0.08);
    --shadow-md: 0 16px 36px rgba(24, 24, 27, 0.12);
    --shadow-lg: 0 30px 60px rgba(24, 24, 27, 0.18);

    --nav-height: 72px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-ink);
    background-color: var(--color-white);
    padding-top: calc(var(--nav-height) + var(--space-2));
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s ease;
}

a:hover {
    color: var(--color-accent);
}

p {
    margin-bottom: var(--space-2);
    color: var(--color-muted);
}

h1, h2, h3, h4, h5 {
    font-family: var(--font-display);
    color: var(--color-ink);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.6rem, 4vw, 4rem);
}

h2 {
    font-size: clamp(1.8rem, 2.6vw, 2.6rem);
}

h3 {
    font-size: 1.4rem;
}

ul {
    padding-left: 1.2rem;
    margin-bottom: var(--space-2);
}

li {
    margin-bottom: 0.4rem;
    color: var(--color-muted);
}

main {
    overflow: hidden;
}

.container {
    width: 92%;
    max-width: 1240px;
    margin: 0 auto;
}

.container-wide {
    width: 96%;
    max-width: 1400px;
    margin: 0 auto;
}

.section {
    padding: var(--space-6) 0;
}

.section-tight {
    padding: var(--space-4) 0;
}

.section-dark {
    background-color: var(--color-ink);
    color: var(--color-white);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark p,
.section-dark li {
    color: var(--color-white);
}

.bg-light {
    background-color: var(--color-surface);
}

.section-header {
    display: grid;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.75rem;
    color: var(--color-accent);
    font-weight: 700;
}

.lead {
    font-size: 1.1rem;
    color: var(--color-muted);
}

.muted {
    color: var(--color-muted);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-3);
}

.grid-1 {
    display: grid;
    gap: var(--space-3);
}

.stack-lg {
    display: grid;
    gap: var(--space-4);
}

.stack-md {
    display: grid;
    gap: var(--space-3);
}

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

.text-right {
    text-align: right;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border: 1px solid var(--color-line);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--color-ink);
    background-color: var(--color-white);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.85rem;
    border: 1px solid transparent;
    transition: transform 0.25s ease, background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background-color: var(--color-accent-dark);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-ink);
    border-color: var(--color-ink);
}

.btn-outline:hover {
    background-color: var(--color-ink);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-dark {
    background-color: var(--color-ink);
    color: var(--color-white);
    border-color: var(--color-ink);
}

.btn-dark:hover {
    background-color: var(--color-ink-strong);
}

.divider {
    height: 1px;
    background-color: var(--color-line);
    margin: var(--space-4) 0;
}

/* Header */
.header {
    position: fixed;
    top: var(--space-2);
    left: 0;
    right: 0;
    z-index: 2000;
    pointer-events: none;
}

.nav-shell {
    pointer-events: auto;
    background-color: var(--color-ink);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    padding: 0 var(--space-3);
    min-height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    max-width: 1240px;
    margin: 0 auto;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--color-white);
    letter-spacing: 0.08em;
}

.nav-toggle {
    display: none;
}

.nav-toggle-label {
    display: none;
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: var(--color-white);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.75rem;
}

.nav-menu {
    list-style: none;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0;
    margin: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--color-white);
    font-size: 0.9rem;
    padding: 10px 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.nav-link::after {
    content: '';
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width 0.25s ease;
    display: block;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--color-white);
}

.dropdown-menu {
    list-style: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background-color: var(--color-ink);
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: var(--space-2);
    display: none;
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.nav-item:hover > .dropdown-menu {
    display: grid;
    gap: 8px;
}

.dropdown-menu a {
    color: var(--color-white);
    font-size: 0.85rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.dropdown-menu a:hover {
    color: var(--color-accent);
}

/* Hero */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    color: var(--color-white);
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: var(--hero-bg);
    background-size: cover;
    background-position: center;
    filter: brightness(0.45);
    z-index: -2;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(24, 24, 27, 0.75);
    z-index: -1;
}

.hero.parallax::before {
    background-attachment: fixed;
}

.hero-inner {
    display: grid;
    gap: var(--space-4);
    max-width: 760px;
}

.hero-frame {
    border: 2px solid rgba(255, 255, 255, 0.5);
    padding: var(--space-4);
    background: rgba(24, 24, 27, 0.85);
}

.hero-frame h1,
.hero-frame p {
    color: var(--color-white);
}

.hero-actions {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.hero-marquee {
    margin-top: var(--space-5);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--space-2);
    overflow: hidden;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    font-size: 0.75rem;
}

.hero-marquee span {
    display: inline-block;
    padding-right: 40px;
    animation: marquee 16s linear infinite;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Service blocks */
.service-blocks {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
}

.service-block {
    position: relative;
    min-height: 320px;
    padding: var(--space-4);
    border: 1px solid var(--color-line);
    background-color: var(--color-white);
    overflow: hidden;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.service-block::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: var(--bg);
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.service-block::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(24, 24, 27, 0.7), rgba(24, 24, 27, 0.4));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.service-block > * {
    position: relative;
    z-index: 1;
}

.service-block:hover {
    transform: translateY(-6px);
    border-color: var(--color-accent);
}

.service-block:hover::before,
.service-block:hover::after {
    opacity: 1;
}

.service-block h3,
.service-block p,
.service-block li {
    color: var(--color-ink);
}

.service-block:hover h3,
.service-block:hover p,
.service-block:hover li {
    color: var(--color-white);
}

.service-block .tag {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background-color: rgba(255, 255, 255, 0.9);
}

.service-block:hover .tag {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.5);
}

.service-block ul {
    padding-left: 1.2rem;
}

/* Cases masonry */
.case-masonry {
    column-count: 3;
    column-gap: var(--space-3);
}

.case-card {
    display: inline-block;
    width: 100%;
    border: 1px solid var(--color-line);
    margin-bottom: var(--space-3);
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.case-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.case-body {
    padding: var(--space-3);
    display: grid;
    gap: var(--space-2);
}

.case-meta {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-muted);
}

.case-actions {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

/* Insights */
.magazine-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-4);
}

.magazine-feature {
    border: 1px solid var(--color-line);
    padding: var(--space-4);
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.magazine-feature img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    margin-bottom: var(--space-3);
}

.magazine-list {
    display: grid;
    gap: var(--space-3);
}

.magazine-card {
    border: 1px solid var(--color-line);
    padding: var(--space-3);
    background-color: var(--color-white);
    display: grid;
    gap: var(--space-2);
}

.magazine-card .tag {
    border-color: var(--color-blue);
    color: var(--color-blue);
}

/* About + stats */
.about-panel {
    border: 1px solid var(--color-line);
    padding: var(--space-4);
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-3);
}

.stat-card {
    border: 1px solid var(--color-line);
    padding: var(--space-3);
    background-color: var(--color-white);
}

.stat-card h3 {
    font-size: 2rem;
    color: var(--color-accent);
}

/* Partners marquee */
.partners-marquee {
    display: grid;
    gap: var(--space-4);
}

.marquee-grid {
    display: grid;
    gap: var(--space-3);
}

.marquee-card {
    border: 1px solid var(--color-line);
    background-color: var(--color-white);
    padding: var(--space-3);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-md);
    display: grid;
    gap: var(--space-2);
}

.marquee-head h3 {
    margin-bottom: 4px;
}

.marquee-row {
    --marquee-speed: 24s;
    position: relative;
    overflow: hidden;
    border: 1px dashed var(--color-line);
    background: linear-gradient(90deg, rgba(234, 88, 12, 0.05), rgba(14, 165, 233, 0.05));
    padding: var(--space-2) 0;
    border-radius: var(--radius-md);
    min-height: 96px;
}

.marquee-track {
    position: absolute;
    top: 50%;
    left: 0;
    display: inline-flex;
    gap: var(--space-2);
    min-width: max-content;
    transform: translate(-100%, -50%);
    animation: marquee-right var(--marquee-speed) linear infinite;
}

.marquee-row:hover .marquee-track {
    animation-play-state: paused;
}

.marquee-track:nth-child(2) {
    animation-delay: calc(var(--marquee-speed) / -2);
}

@keyframes marquee-right {
    0% {
        transform: translate(-100%, -50%);
    }
    100% {
        transform: translate(100%, -50%);
    }
}

.partner-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-line);
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    white-space: nowrap;
}

.chip-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-blue) 100%);
    color: var(--color-white);
    font-weight: 700;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
}

.chip-text {
    font-weight: 700;
    color: var(--color-ink);
}

/* Logo wall */
.logo-wall {
    display: grid;
    gap: var(--space-4);
}

.logo-group {
    display: grid;
    gap: var(--space-2);
}

.logo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-2);
}

.logo-item {
    border: 1px solid var(--color-line);
    padding: var(--space-2);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80px;
    background-color: var(--color-white);
}

.logo-item img {
    max-height: 48px;
    width: auto;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}

.logo-item:hover img {
    filter: grayscale(0%);
}

/* Page hero */
.page-hero {
    position: relative;
    padding: var(--space-6) 0;
    color: var(--color-white);
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: var(--hero-bg);
    background-size: cover;
    background-position: center;
    filter: brightness(0.4);
    z-index: -2;
}

.page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(24, 24, 27, 0.8);
    z-index: -1;
}

.page-hero h1,
.page-hero p {
    color: var(--color-white);
}

/* Timeline */
.timeline {
    display: grid;
    gap: var(--space-3);
    border-left: 2px solid var(--color-line);
    padding-left: var(--space-4);
}

.timeline-item {
    position: relative;
    padding-left: var(--space-3);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -16px;
    top: 6px;
    width: 10px;
    height: 10px;
    background-color: var(--color-accent);
}

.timeline-item h3 {
    margin-bottom: var(--space-1);
}

/* Forms */
.form-card {
    border: 1px solid var(--color-line);
    padding: var(--space-4);
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-2);
}

.form-field {
    display: grid;
    gap: 8px;
}

input,
textarea,
select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
}

textarea {
    min-height: 160px;
    resize: vertical;
}

/* Detail pages */
.detail-header {
    border: 1px solid var(--color-line);
    padding: var(--space-4);
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-4);
}

.detail-meta {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-muted);
    margin-top: var(--space-1);
}

.detail-body img {
    border: 1px solid var(--color-line);
    margin: var(--space-3) 0;
}

.callout {
    border: 1px solid var(--color-accent);
    padding: var(--space-3);
    background-color: rgba(234, 88, 12, 0.08);
    margin: var(--space-3) 0;
}

/* Parallax */
.parallax {
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
}

/* Cursor */
.cursor-dot,
.cursor-ring {
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 3000;
}

.cursor-dot {
    width: 6px;
    height: 6px;
    background-color: var(--color-accent);
    transform: translate(calc(var(--cursor-dot-x, 0px) - 3px), calc(var(--cursor-dot-y, 0px) - 3px));
}

.cursor-ring {
    width: 28px;
    height: 28px;
    border: 1px solid var(--color-accent);
    opacity: 0.6;
    transform: translate(calc(var(--cursor-ring-x, 0px) - 14px), calc(var(--cursor-ring-y, 0px) - 14px)) scale(var(--cursor-ring-scale, 1));
    transition: transform 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
}

body.cursor-hover .cursor-ring {
    border-color: var(--color-blue);
    opacity: 0.9;
    --cursor-ring-scale: 1.6;
}

/* Footer */
.footer {
    background-color: var(--color-ink);
    color: var(--color-white);
    padding: var(--space-6) 0 var(--space-4);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.footer-col h4 {
    color: var(--color-white);
    margin-bottom: var(--space-2);
}

.footer-col a {
    color: rgba(255, 255, 255, 0.75);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding-top: var(--space-3);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* Modal */
.case-modal {
    position: fixed;
    inset: 0;
    background: rgba(24, 24, 27, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-3);
    z-index: 2500;
}

.case-modal:target {
    display: flex;
}

.case-modal-card {
    max-width: 860px;
    width: 100%;
    background-color: var(--color-white);
    border: 1px solid var(--color-line);
    padding: var(--space-4);
    box-shadow: var(--shadow-lg);
    display: grid;
    gap: var(--space-3);
}

.case-modal-close {
    justify-self: end;
    border: 1px solid var(--color-ink);
    padding: 6px 12px;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
}

/* Responsive */
@media (max-width: 1100px) {
    .nav-shell {
        max-width: 92%;
    }

    .case-masonry {
        column-count: 2;
    }
}

@media (max-width: 980px) {
    body {
        padding-top: calc(var(--nav-height) + var(--space-5));
    }

    .nav-shell {
        flex-wrap: wrap;
        padding: var(--space-2);
        gap: var(--space-2);
    }

    .nav-toggle-label {
        display: inline-flex;
    }

    .nav-menu {
        width: 100%;
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-1);
        padding-bottom: var(--space-2);
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding-top: var(--space-2);
    }

    .nav-toggle:checked ~ .nav-menu {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: var(--space-2);
    }

    .dropdown-menu {
        position: static;
        display: none;
        box-shadow: none;
        border: 1px solid rgba(255, 255, 255, 0.12);
        padding: var(--space-1);
    }

    .nav-item:hover > .dropdown-menu {
        display: grid;
    }

    .hero {
        min-height: 80vh;
    }

    .service-blocks {
        grid-template-columns: 1fr;
    }

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

    .grid-2,
    .grid-3,
    .grid-4,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .case-masonry {
        column-count: 1;
    }
}

@media (max-width: 640px) {
    .hero-frame {
        padding: var(--space-3);
    }

    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav-toggle:checked ~ .nav-menu {
        grid-template-columns: 1fr;
    }
}

@media (pointer: coarse), (prefers-reduced-motion: reduce) {
    .cursor-dot,
    .cursor-ring {
        display: none;
    }
}