:root {
    --black: #0b0b0b;
    --ink: #111111;
    --panel: #1a1a1a;
    --gold: #d6b37a;
    --gold-soft: #c8a46b;
    --text: #efe8dc;
    --muted: #a8a29a;
    --line: rgba(214, 179, 122, 0.22);
    --glass: rgba(20, 20, 20, 0.72);
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-width: 320px;
    background: var(--black);
    color: var(--text);
    font-family: Inter, "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
}

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

button,
input,
textarea {
    font: inherit;
}

.loader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: grid;
    place-items: center;
    background: var(--black);
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 42px;
    height: 42px;
    border: 1px solid rgba(214, 179, 122, 0.25);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes researchFlow {
    from {
        transform: translateX(-50%);
    }
    to {
        transform: translateX(0);
    }
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    width: 100%;
    min-height: 86px;
    padding: 0 clamp(22px, 4vw, 54px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text);
    background: linear-gradient(180deg, rgba(8, 8, 8, 0.88), rgba(8, 8, 8, 0));
}

.navbar.scrolled {
    background: rgba(8, 8, 8, 0.86);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(214, 179, 122, 0.12);
}

.brand {
    color: var(--gold);
    font-size: clamp(1.05rem, 2vw, 1.55rem);
    font-weight: 800;
    letter-spacing: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: clamp(24px, 4vw, 64px);
    font-size: 0.98rem;
    color: rgba(239, 232, 220, 0.86);
}

.nav-links a {
    position: relative;
    padding: 6px 0;
    transition: color 0.25s ease;
}

.nav-links a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -5px;
    height: 2px;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s ease;
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
    transform: scaleX(1);
}

.hamburger {
    width: 42px;
    height: 34px;
    display: none;
    flex-direction: column;
    justify-content: space-between;
    background: transparent;
    border: 0;
    cursor: pointer;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--gold);
}

.hero {
    position: relative;
    min-height: 100vh;
    padding: 126px clamp(22px, 4vw, 54px) 40px;
    overflow: hidden;
    background:
        radial-gradient(circle at 68% 28%, rgba(214, 179, 122, 0.16), transparent 28%),
        linear-gradient(90deg, rgba(0, 0, 0, 0.98), rgba(12, 12, 12, 0.64) 45%, rgba(0, 0, 0, 0.98)),
        #050505;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(90deg, rgba(0, 0, 0, 0.82) 0%, rgba(0, 0, 0, 0.22) 46%, rgba(0, 0, 0, 0.82) 100%),
        url("assets/hero-wangyufeng.png");
    background-size: cover;
    background-position: center;
    opacity: 0.88;
}

.hero-shade {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(0, 0, 0, 0.15), rgba(0, 0, 0, 0.7)),
        radial-gradient(circle at 50% 18%, transparent 0 22%, rgba(0, 0, 0, 0.62) 66%);
}

.hero-content {
    position: relative;
    z-index: 1;
    min-height: calc(100vh - 280px);
    display: grid;
    grid-template-columns: minmax(280px, 0.88fr) minmax(320px, 1.1fr) minmax(260px, 0.72fr);
    gap: clamp(24px, 3vw, 58px);
    align-items: center;
}

.hero-left {
    padding-top: 28px;
}

.eyebrow,
.section-kicker {
    color: var(--gold);
    font-size: 0.98rem;
    font-weight: 600;
    letter-spacing: 0;
}

.hero h1 {
    margin-top: 20px;
    padding-left: 24px;
    border-left: 3px solid var(--gold);
    color: #f3d4a2;
    font-size: clamp(4.8rem, 8vw, 7.2rem);
    font-weight: 800;
    line-height: 1;
    letter-spacing: 0;
    text-shadow: 0 0 35px rgba(214, 179, 122, 0.18);
}

.hero-subtitle {
    margin-top: 28px;
    color: rgba(239, 232, 220, 0.96);
    font-size: clamp(1.22rem, 2vw, 1.75rem);
    line-height: 1.85;
}

.mobile-years {
    display: none;
}

.hero-experience,
.hero-logic {
    display: inline;
}

.mobile-stat-copy {
    display: none;
}

.mobile-stat-title {
    display: none;
}

.hero-rule,
.mini-rule {
    width: 42px;
    height: 2px;
    margin: 34px 0;
    background: var(--gold);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.btn {
    min-height: 54px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 30px;
    border: 1px solid var(--gold);
    border-radius: 6px;
    color: var(--gold);
    background: rgba(0, 0, 0, 0.2);
    transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.btn:hover {
    transform: translateY(-2px);
    background: var(--gold);
    color: #0d0d0d;
}

.btn.primary::after {
    content: "→";
    margin-left: 18px;
}

.btn.ghost {
    border-color: rgba(239, 232, 220, 0.32);
    color: rgba(239, 232, 220, 0.86);
}

.hero-center {
    align-self: stretch;
    min-height: 530px;
}

.portrait-frame {
    width: 100%;
    height: 100%;
    min-height: 530px;
}

.hero-right {
    color: rgba(239, 232, 220, 0.88);
}

.hero-carousel {
    position: relative;
    min-height: 290px;
    padding: 8px 0 0;
}

.slide-index {
    display: flex;
    align-items: baseline;
    gap: 8px;
    color: rgba(239, 232, 220, 0.88);
}

.slide-index strong {
    color: #f3d4a2;
    font-size: clamp(3rem, 5vw, 4.4rem);
    font-weight: 500;
    line-height: 1;
}

.slide-index span {
    font-size: 1.5rem;
}

.progress-line {
    position: relative;
    width: min(100%, 290px);
    height: 2px;
    margin: 22px 0 54px;
    background: rgba(239, 232, 220, 0.22);
}

.progress-line::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 35%;
    height: 100%;
    background: var(--gold);
}

.hero-slide-copy {
    position: relative;
    min-height: 150px;
}

.hero-thought {
    position: absolute;
    inset: 0;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.7s ease, transform 0.7s ease;
    pointer-events: none;
}

.hero-thought.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.hero-thought h2 {
    color: #f0d2a0;
    font-size: clamp(1.45rem, 2.1vw, 2.15rem);
    font-weight: 500;
    line-height: 1.35;
    letter-spacing: 0;
}

.hero-thought p {
    margin-top: 22px;
    color: rgba(239, 232, 220, 0.78);
    font-size: clamp(1.02rem, 1.35vw, 1.22rem);
    line-height: 1.85;
}

.hero-carousel-controls {
    margin-top: 24px;
    display: flex;
    gap: 18px;
}

.hero-carousel-btn {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    color: rgba(243, 212, 162, 0.82);
    background: rgba(255, 255, 255, 0.035);
    border: 1px solid rgba(214, 179, 122, 0.2);
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.hero-carousel-btn:hover {
    color: #111;
    background: rgba(214, 179, 122, 0.86);
    border-color: rgba(214, 179, 122, 0.86);
}

.hero-stats {
    position: relative;
    z-index: 2;
    width: min(100%, 1360px);
    margin: 34px auto 0;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(12px, 1.4vw, 18px);
}

.stat-card {
    min-height: 178px;
    padding: clamp(22px, 2.2vw, 30px);
    display: grid;
    grid-template-columns: 42px 1fr;
    column-gap: 16px;
    row-gap: 12px;
    align-content: start;
    background: transparent;
    border: 1px solid rgba(214, 179, 122, 0.2);
    border-radius: 8px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.stat-card:last-child {
    border-right: 1px solid rgba(214, 179, 122, 0.2);
}

.stat-icon {
    grid-row: span 2;
    color: var(--gold);
    font-size: 2rem;
    line-height: 1.1;
}

.stat-card strong {
    display: block;
    color: var(--gold);
    font-size: clamp(1.38rem, 1.55vw, 2rem);
    font-weight: 500;
    line-height: 1.2;
}

.stat-card span {
    color: rgba(239, 232, 220, 0.75);
    font-size: 0.95rem;
    line-height: 1.45;
}

.stat-card p {
    grid-column: 2;
    color: rgba(239, 232, 220, 0.68);
    font-size: 0.92rem;
    line-height: 1.75;
}

.section {
    padding: clamp(78px, 8vw, 128px) clamp(22px, 4vw, 54px);
    background: #111;
}

.section:nth-of-type(odd) {
    background: #0b0b0b;
}

.dark-section {
    background:
        radial-gradient(circle at 16% 8%, rgba(214, 179, 122, 0.1), transparent 24%),
        #0d0d0d;
}

.section-inner {
    width: min(1180px, 100%);
    margin: 0 auto;
}

.split {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: clamp(32px, 6vw, 86px);
    align-items: start;
}

.section h2 {
    margin-top: 12px;
    max-width: 760px;
    color: #f1ddbd;
    font-size: clamp(2rem, 4vw, 4.4rem);
    line-height: 1.16;
    font-weight: 700;
    letter-spacing: 0;
}

.lead-copy p,
.contact-layout > div > p {
    color: rgba(239, 232, 220, 0.75);
    font-size: clamp(1.08rem, 1.8vw, 1.35rem);
    line-height: 1.9;
}

.feature-grid {
    margin-top: 34px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.feature-grid span,
.article-grid a {
    min-height: 54px;
    display: flex;
    align-items: center;
    padding: 14px 16px;
    color: rgba(239, 232, 220, 0.82);
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid rgba(214, 179, 122, 0.16);
    border-radius: 6px;
}

.insight-grid,
.service-grid,
.case-grid,
.article-grid {
    margin-top: 46px;
    display: grid;
    gap: 18px;
}

.insight-grid {
    grid-template-columns: repeat(3, 1fr);
}

.insight-grid article,
.service-panel,
.case-grid article,
.case-study {
    padding: clamp(24px, 3vw, 34px);
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid rgba(214, 179, 122, 0.15);
    border-radius: 8px;
    transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.insight-grid article:hover,
.service-panel:hover,
.case-grid article:hover,
.article-grid a:hover {
    transform: translateY(-4px);
    border-color: rgba(214, 179, 122, 0.42);
    background: rgba(214, 179, 122, 0.07);
}

.insight-grid span,
.service-panel > span,
.case-study span {
    color: var(--gold);
    font-size: 0.92rem;
    font-weight: 700;
}

.insight-grid h3,
.service-panel h3,
.case-grid h3,
.case-study h3 {
    margin-top: 14px;
    color: #f0dcc0;
    font-size: clamp(1.25rem, 2vw, 1.65rem);
}

.insight-grid p,
.case-grid p,
.case-study p {
    margin-top: 12px;
    color: rgba(239, 232, 220, 0.68);
    line-height: 1.85;
}

.service-grid {
    grid-template-columns: repeat(2, 1fr);
}

.service-panel ul {
    margin-top: 26px;
    display: grid;
    gap: 14px;
    list-style: none;
}

.service-panel li {
    position: relative;
    padding-left: 22px;
    color: rgba(239, 232, 220, 0.72);
}

.service-panel li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.75em;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--gold);
}

.research-section {
    padding-inline: 0;
    background:
        radial-gradient(circle at 78% 0%, rgba(72, 119, 166, 0.14), transparent 30%),
        linear-gradient(180deg, #101010, #080808);
    overflow: hidden;
}

.research-heading {
    padding: 0 clamp(22px, 4vw, 54px);
    display: grid;
    grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1.1fr);
    gap: clamp(28px, 5vw, 76px);
    align-items: end;
}

.research-heading p:last-child {
    color: rgba(239, 232, 220, 0.7);
    font-size: clamp(1.02rem, 1.4vw, 1.2rem);
    line-height: 1.9;
}

.research-marquee {
    position: relative;
    margin-top: 52px;
    width: 100%;
    overflow: hidden;
}

.research-marquee::before,
.research-marquee::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    z-index: 2;
    width: min(12vw, 180px);
    pointer-events: none;
}

.research-marquee::before {
    left: 0;
    background: linear-gradient(90deg, #080808, rgba(8, 8, 8, 0));
}

.research-marquee::after {
    right: 0;
    background: linear-gradient(270deg, #080808, rgba(8, 8, 8, 0));
}

.research-track {
    width: max-content;
    display: flex;
    gap: 24px;
    padding: 0 24px;
    animation: researchFlow 46s linear infinite;
}

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

.research-track figure {
    width: clamp(300px, 34vw, 520px);
    aspect-ratio: 0.86;
    flex: 0 0 auto;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(214, 179, 122, 0.15);
    border-radius: 8px;
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.36);
}

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

.case-grid {
    grid-template-columns: repeat(3, 1fr);
}

.case-study {
    margin-top: 18px;
    background: linear-gradient(135deg, rgba(214, 179, 122, 0.12), rgba(255, 255, 255, 0.035));
}

.article-grid {
    grid-template-columns: repeat(3, 1fr);
}

.articles-preview-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
}

.articles-preview-heading h2 {
    margin-top: 12px;
}

.articles-page,
.article-detail-page {
    background:
        radial-gradient(circle at 72% 12%, rgba(214, 179, 122, 0.12), transparent 28%),
        linear-gradient(180deg, #070707, #101010 48%, #070707);
}

.article-hero {
    min-height: 62vh;
    padding: 160px clamp(22px, 4vw, 54px) 86px;
    display: grid;
    align-items: end;
    border-bottom: 1px solid rgba(214, 179, 122, 0.14);
    background:
        linear-gradient(120deg, rgba(0, 0, 0, 0.82), rgba(9, 9, 9, 0.94)),
        radial-gradient(circle at 18% 18%, rgba(214, 179, 122, 0.16), transparent 30%);
}

.article-hero-inner {
    width: min(1180px, 100%);
    margin: 0 auto;
}

.article-hero h1,
.article-detail-header h1 {
    max-width: 980px;
    margin-top: 16px;
    color: #f1ddbd;
    font-size: clamp(3.2rem, 7vw, 6.4rem);
    line-height: 1.04;
    font-weight: 760;
    letter-spacing: 0;
}

.article-hero p:last-child,
.article-detail-header > p {
    max-width: 740px;
    margin-top: 26px;
    color: rgba(239, 232, 220, 0.72);
    font-size: clamp(1.05rem, 1.6vw, 1.28rem);
    line-height: 1.9;
}

.articles-list-section {
    background: transparent;
}

.articles-toolbar {
    padding-bottom: 18px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    color: rgba(214, 179, 122, 0.72);
    font-size: 0.86rem;
    font-weight: 700;
    text-transform: uppercase;
    border-bottom: 1px solid rgba(214, 179, 122, 0.2);
}

.articles-list {
    display: grid;
    gap: 0;
}

.article-list-card {
    border-bottom: 1px solid rgba(214, 179, 122, 0.16);
}

.article-list-card a {
    min-height: 260px;
    padding: clamp(30px, 4.4vw, 58px) 0;
    display: grid;
    grid-template-columns: minmax(160px, 0.26fr) minmax(0, 1fr) minmax(120px, 0.16fr);
    gap: clamp(24px, 4vw, 58px);
    align-items: start;
}

.article-list-card h2 {
    max-width: 760px;
    color: #f0dcc0;
    font-size: clamp(1.85rem, 3.3vw, 3.65rem);
    line-height: 1.16;
    font-weight: 680;
    letter-spacing: 0;
    transition: color 0.25s ease;
}

.article-list-card p {
    max-width: 620px;
    color: rgba(239, 232, 220, 0.66);
    font-size: clamp(1rem, 1.35vw, 1.16rem);
    line-height: 1.9;
}

.article-list-card.featured {
    background: linear-gradient(90deg, rgba(214, 179, 122, 0.07), transparent);
}

.article-list-card:hover h2 {
    color: var(--gold);
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    color: rgba(239, 232, 220, 0.58);
    font-size: 0.9rem;
}

.article-meta span {
    color: var(--gold);
}

.article-meta span::before {
    content: "";
    width: 6px;
    height: 6px;
    margin-right: 10px;
    display: inline-block;
    border-radius: 50%;
    background: var(--gold);
    vertical-align: middle;
}

.article-readmore {
    justify-self: end;
    color: rgba(214, 179, 122, 0.86);
    font-size: 0.96rem;
    white-space: nowrap;
}

.article-readmore::after,
.article-back::before {
    color: var(--gold);
}

.article-readmore::after {
    content: " →";
}

.article-detail {
    width: min(1040px, calc(100% - 44px));
    margin: 0 auto;
    padding: 156px 0 110px;
}

.article-detail-header {
    padding-bottom: clamp(44px, 7vw, 84px);
    border-bottom: 1px solid rgba(214, 179, 122, 0.18);
}

.article-back {
    display: inline-flex;
    margin-bottom: 34px;
    color: rgba(214, 179, 122, 0.86);
}

.article-back::before {
    content: "← ";
    margin-right: 8px;
}

.article-detail-header .article-meta {
    margin-bottom: 18px;
}

.article-body {
    width: min(760px, 100%);
    margin: 0 auto;
    padding-top: clamp(44px, 7vw, 80px);
    color: rgba(239, 232, 220, 0.8);
    font-size: clamp(1.05rem, 1.4vw, 1.18rem);
    line-height: 2.05;
}

.article-body p + p,
.article-body p + h2,
.article-body blockquote + h2 {
    margin-top: 30px;
}

.article-body h2 {
    color: #f1ddbd;
    font-size: clamp(1.55rem, 2.4vw, 2.35rem);
    line-height: 1.28;
    font-weight: 680;
}

.article-body blockquote {
    margin: 40px 0;
    padding: 26px clamp(22px, 3vw, 36px);
    color: #f0dcc0;
    font-size: clamp(1.2rem, 1.8vw, 1.55rem);
    line-height: 1.75;
    background: rgba(214, 179, 122, 0.08);
    border-left: 3px solid var(--gold);
    opacity: 1 !important;
}

.article-body ul,
.article-body ol {
    margin: 20px 0 20px 40px;
    opacity: 1 !important;
}

.article-body li {
    margin: 8px 0;
    opacity: 1 !important;
    color: rgba(239, 232, 220, 0.8);
}

.article-body a {
    color: var(--gold);
    text-decoration: underline;
    opacity: 1 !important;
}

.article-body a:hover {
    color: #f1ddbd;
}

.article-body hr {
    margin: 40px 0;
    border: none;
    border-top: 1px solid rgba(214, 179, 122, 0.22);
    opacity: 1 !important;
}

.contact-section {
    background:
        linear-gradient(120deg, rgba(0, 0, 0, 0.94), rgba(17, 17, 17, 0.86)),
        radial-gradient(circle at 76% 18%, rgba(214, 179, 122, 0.16), transparent 28%);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr minmax(320px, 430px);
    gap: clamp(32px, 6vw, 86px);
    align-items: start;
}

.contact-list {
    margin-top: 34px;
    display: grid;
    gap: 14px;
    color: rgba(239, 232, 220, 0.78);
}

.contact-list a:hover {
    color: var(--gold);
}

.contact-form {
    padding: clamp(24px, 3vw, 36px);
    display: grid;
    gap: 18px;
    background: rgba(255, 255, 255, 0.055);
    border: 1px solid rgba(214, 179, 122, 0.18);
    border-radius: 8px;
    backdrop-filter: blur(18px);
}

.contact-form label {
    display: grid;
    gap: 8px;
    color: rgba(239, 232, 220, 0.76);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    min-height: 48px;
    padding: 12px 14px;
    color: var(--text);
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(214, 179, 122, 0.24);
    border-radius: 6px;
    outline: 0;
}

.contact-form textarea {
    min-height: 132px;
    resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--gold);
}

.contact-form button {
    min-height: 52px;
    color: #111;
    font-weight: 700;
    background: var(--gold);
    border: 0;
    border-radius: 6px;
    cursor: pointer;
}

.footer {
    padding: 28px 22px;
    color: rgba(239, 232, 220, 0.52);
    text-align: center;
    background: #070707;
    border-top: 1px solid rgba(214, 179, 122, 0.12);
}

.floating-btn {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 900;
    width: 46px;
    height: 46px;
    display: none;
    align-items: center;
    justify-content: center;
    color: #111;
    background: var(--gold);
    border: 0;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.75s ease, transform 0.75s ease;
}

.fade-in.visible {
    opacity: 1 !important;
    transform: translateY(0);
}

/* 确保文章正文不被隐藏 */
.article-body {
    opacity: 1 !important;
    visibility: visible !important;
}

.article-body p,
.article-body h2,
.article-body h3,
.article-body blockquote,
.article-body ul,
.article-body ol,
.article-body li,
.article-body hr {
    opacity: 1 !important;
    visibility: visible !important;
}

::selection {
    color: #111;
    background: var(--gold);
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #080808;
}

::-webkit-scrollbar-thumb {
    background: rgba(214, 179, 122, 0.75);
}

@media (max-width: 1100px) {
    .hero-content {
        grid-template-columns: 1fr 0.9fr;
        min-height: auto;
    }

    .hero-right {
        padding-top: 90px;
    }

    .hero-stats,
    .insight-grid,
    .case-grid,
    .article-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-card:last-child {
        grid-column: auto;
    }
}

@media (min-width: 821px) and (max-width: 1100px) {
    .hero {
        min-height: 100svh;
        padding-top: 112px;
    }

    .hero-bg {
        background-size: cover;
        background-position: center center;
        opacity: 0.94;
    }

    .hero-content {
        min-height: calc(100svh - 280px);
        grid-template-columns: minmax(280px, 0.86fr) minmax(240px, 0.7fr);
        align-items: center;
    }

    .hero-center {
        position: absolute;
        inset: 0;
        z-index: -1;
        display: block;
        min-height: 100%;
        pointer-events: none;
    }

    .portrait-frame {
        min-height: 100%;
    }

    .hero-right {
        padding-top: 0;
    }
}

@media (max-width: 820px) {
    .navbar {
        min-height: 74px;
    }

    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 74px;
        left: 16px;
        right: 16px;
        display: none;
        padding: 20px;
        flex-direction: column;
        align-items: stretch;
        gap: 14px;
        background: rgba(8, 8, 8, 0.96);
        border: 1px solid rgba(214, 179, 122, 0.18);
        border-radius: 8px;
        backdrop-filter: blur(18px);
    }

    .nav-links.active {
        display: flex;
    }

    .hero {
        min-height: 100svh;
        padding: 0;
        display: block;
        background:
            radial-gradient(circle at 50% 42%, rgba(214, 179, 122, 0.15), transparent 36%),
            linear-gradient(180deg, #050505 0%, #070707 42%, #020202 100%);
    }

    .hero-content,
    .split,
    .service-grid,
    .research-heading,
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .hero-content {
        z-index: 3;
        width: 100%;
        min-height: 100svh;
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        padding: 0 24px;
    }

    .hero-left {
        position: absolute;
        top: clamp(84px, 12svh, 118px);
        left: 24px;
        right: 24px;
        z-index: 4;
        min-height: 0;
        max-width: min(76vw, 360px);
        padding-top: 0;
    }

    .hero-center {
        display: none;
    }

    .hero-bg {
        inset: 0;
        background-image: url("assets/hero-wangyufeng.png");
        background-repeat: no-repeat;
        background-size: cover;
        background-position: center center;
        opacity: 0.96;
        filter: brightness(1.14) contrast(1.08) saturate(0.98);
    }

    .hero-shade {
        z-index: 1;
        background:
            linear-gradient(180deg, rgba(0, 0, 0, 0.78) 0%, rgba(0, 0, 0, 0.34) 24%, rgba(0, 0, 0, 0.02) 48%, rgba(0, 0, 0, 0.72) 100%),
            linear-gradient(90deg, rgba(0, 0, 0, 0.82), rgba(0, 0, 0, 0.12) 48%, rgba(0, 0, 0, 0.58));
    }

    .hero .eyebrow,
    .hero-rule,
    .btn.ghost {
        display: none;
    }

    .hero h1 {
        margin-top: 0;
        padding-left: 14px;
        border-left-width: 2px;
        font-size: clamp(2.65rem, 12vw, 3.72rem);
        line-height: 1;
        font-weight: 720;
        text-shadow: 0 8px 28px rgba(0, 0, 0, 0.72);
    }

    .hero-subtitle {
        margin-top: 16px;
        color: rgba(249, 238, 222, 0.9);
        font-size: clamp(0.92rem, 3.9vw, 1.08rem);
        line-height: 1.7;
        font-weight: 400;
        text-shadow: 0 8px 24px rgba(0, 0, 0, 0.76);
    }

    .hero-experience,
    .hero-logic {
        display: block;
    }

    .hero-logic {
        position: static;
        margin-top: 5px;
        color: rgba(239, 232, 220, 0.58);
        font-size: 0.82rem;
        font-weight: 300;
        letter-spacing: 0.14em;
    }

    .desktop-plus {
        display: none;
    }

    .mobile-years {
        display: inline;
    }

    .hero-subtitle br {
        display: block;
    }

    .hero-actions {
        position: static;
        margin-top: 18px;
        display: block;
    }

    .hero-actions .btn.primary {
        width: auto;
        min-height: 38px;
        padding: 0 17px;
        color: rgba(243, 212, 162, 0.84);
        font-size: 0.84rem;
        font-weight: 500;
        background: rgba(0, 0, 0, 0.22);
        border-color: rgba(214, 179, 122, 0.28);
        border-radius: 999px;
        backdrop-filter: none;
        box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
    }

    .hero-actions .btn.primary::after {
        content: "↘";
        margin-left: 12px;
        opacity: 0.7;
    }

    .hero-right {
        display: block;
        width: 100%;
        margin-top: 0;
        margin-bottom: clamp(26px, 8svh, 62px);
        padding: 22px 0 18px;
        color: rgba(239, 232, 220, 0.8);
        background: transparent;
        border: 0;
        border-radius: 0;
        backdrop-filter: none;
        box-shadow: none;
    }

    .hero-carousel {
        position: relative;
        min-height: 168px;
        padding: 16px 0 0;
    }

    .hero-carousel::before {
        content: "";
        position: absolute;
        left: -24px;
        right: -24px;
        top: 34px;
        bottom: -4px;
        z-index: -1;
        background: linear-gradient(180deg, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.38) 38%, rgba(0, 0, 0, 0.58));
        pointer-events: none;
    }

    .slide-index strong {
        font-size: 2rem;
    }

    .slide-index span {
        font-size: 1rem;
    }

    .progress-line {
        width: 138px;
        margin: 12px 0 18px;
    }

    .hero-slide-copy {
        min-height: 82px;
    }

    .hero-thought h2 {
        color: rgba(255, 250, 242, 0.94);
        font-size: 1.02rem;
        line-height: 1.45;
        font-weight: 450;
        text-shadow: 0 2px 14px rgba(0, 0, 0, 0.72);
    }

    .hero-thought p {
        margin-top: 8px;
        color: rgba(255, 250, 242, 0.72);
        font-size: 0.82rem;
        line-height: 1.7;
        text-shadow: 0 2px 12px rgba(0, 0, 0, 0.7);
    }

    .hero-carousel-controls {
        margin-top: 12px;
        gap: 12px;
    }

    .hero-carousel-btn {
        width: 28px;
        height: 28px;
        color: rgba(243, 212, 162, 0.72);
        background: transparent;
        border: 0;
    }

    .hero-stats {
        z-index: 4;
        width: auto;
        margin: 16px 20px 0;
        padding: 0 0 32px;
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
        background: transparent;
        border: 0;
        border-radius: 0;
        backdrop-filter: none;
        box-shadow: none;
        overflow: visible;
    }

    .insight-grid,
    .case-grid,
    .article-grid,
    .feature-grid {
        grid-template-columns: 1fr;
    }

    .articles-preview-heading {
        align-items: start;
        flex-direction: column;
    }

    .article-hero {
        min-height: 54vh;
        padding: 118px 24px 62px;
    }

    .article-hero h1,
    .article-detail-header h1 {
        font-size: clamp(2.55rem, 13vw, 4rem);
    }

    .articles-toolbar {
        align-items: start;
        flex-direction: column;
        gap: 8px;
    }

    .article-list-card a {
        min-height: 0;
        padding: 34px 0;
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .article-list-card h2 {
        font-size: clamp(1.62rem, 8vw, 2.45rem);
    }

    .article-readmore {
        justify-self: start;
    }

    .article-detail {
        width: calc(100% - 44px);
        padding: 116px 0 78px;
    }

    .article-back {
        margin-bottom: 26px;
    }

    .article-body {
        line-height: 1.95;
    }

    .stat-card,
    .stat-card:nth-child(2),
    .stat-card:last-child {
        border-right: 0;
        border-top: 0;
        grid-column: auto;
    }

    .stat-card {
        min-height: 0;
        padding: 16px 13px;
        display: grid;
        grid-template-columns: 1fr;
        gap: 8px;
        text-align: left;
        background: transparent;
        border: 1px solid rgba(214, 179, 122, 0.12);
        border-radius: 9px;
        backdrop-filter: blur(9px);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035), 0 12px 24px rgba(0, 0, 0, 0.16);
        text-shadow: 0 8px 18px rgba(0, 0, 0, 0.45);
    }

    .stat-brands {
        order: 1;
    }

    .stat-years {
        order: 2;
    }

    .stat-growth {
        order: 3;
    }

    .stat-icon {
        display: none;
    }

    .stat-card strong {
        display: block;
        font-size: clamp(1.08rem, 4.6vw, 1.4rem);
        line-height: 1.25;
        font-weight: 500;
    }

    .stat-growth strong {
        font-size: clamp(1.08rem, 4.6vw, 1.4rem);
    }

    .stat-card span {
        display: block;
        margin-top: 5px;
        color: rgba(239, 232, 220, 0.66);
        font-size: 0.72rem;
        line-height: 1.45;
    }

    .stat-card p {
        display: block;
        grid-column: auto;
        color: rgba(239, 232, 220, 0.48);
        font-size: 0.72rem;
        line-height: 1.62;
    }

    .desktop-stat-copy {
        display: none;
    }

    .mobile-stat-copy {
        display: inline;
    }

    .desktop-stat-title {
        display: none;
    }

    .mobile-stat-title {
        display: inline;
    }
}

@media (max-width: 520px) {
    .hero-actions {
        display: block;
    }

    .btn {
        width: 100%;
    }

    .hero-actions .btn.primary {
        width: auto;
    }

    .stat-card {
        grid-template-columns: 1fr;
    }

    .stat-card p {
        grid-column: auto;
    }

    .section h2 {
        font-size: 2.05rem;
    }

    .research-track {
        gap: 14px;
        padding: 0 14px;
        animation-duration: 34s;
    }
}