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

html {
    scroll-behavior: smooth;
}

:root {
    --brand-red: #D71920;
    --brand-red-dark: #A90F14;
    --brand-clay: #B86A4A;
    --brand-paper: #F7F3EA;
    --brand-mist: #ECE7DC;
    --brand-stone: #CFC8BA;
    --brand-gray: #6F6A61;
    --brand-silver: #DED8CC;
    --ink: #0B0B0D;
    --paper: #FFFFFF;

    --ink-900: #0B0B0D;
    --ink-800: #141418;
    --ink-700: #1E1E24;
    --line-dark: rgba(255,255,255,.08);
    --text-dim: rgba(255,255,255,.6);
    --text-faint: rgba(255,255,255,.4);
    --accent-primary: var(--brand-red);
    --accent-secondary: var(--brand-clay);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--ink);
    background: var(--brand-paper);
    font-weight: 300;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

section {
    scroll-margin-top: 120px;
}

.navbar {
    position: fixed;
    top: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    padding: 0;
    background: transparent;
    border: none;
}

.nav-capsule {
    display: flex;
    align-items: stretch;
    gap: 1.65rem;
    background: rgba(247, 243, 234, 0.88);
    backdrop-filter: saturate(180%) blur(24px);
    -webkit-backdrop-filter: saturate(180%) blur(24px);
    border: 1px solid rgba(11, 11, 13, 0.06);
    border-radius: 999px;
    min-height: 54px;
    padding: 0 0.95rem 0 0;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06),
                0 1px 4px rgba(0, 0, 0, 0.04),
                inset 0 1px 0 rgba(255, 255, 255, 0.72);
    transition: all 0.45s cubic-bezier(0.19, 1, 0.22, 1);
}

.nav-capsule:hover {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08),
                0 2px 8px rgba(0, 0, 0, 0.06),
                inset 0 1px 0 rgba(255, 255, 255, 0.9);
    background: rgba(247, 243, 234, 0.94);
}

.nav-logo {
    min-width: 126px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 1.15rem;
    background: var(--ink-900);
    border-radius: 999px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.16),
                8px 0 24px rgba(0,0,0,.12);
    text-decoration: none;
    cursor: pointer;
    transition: min-width 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                box-shadow 0.45s cubic-bezier(0.19, 1, 0.22, 1);
}

.nav-logo:hover {
    min-width: 136px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.2),
                10px 0 28px rgba(0,0,0,.18);
}

.nav-logo img {
    height: 28px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    align-items: center;
}

.nav-links a {
    color: #000;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    padding: 0.45rem 0.95rem;
    border-radius: 999px;
    transition: color 0.25s ease, background 0.25s ease, transform 0.25s ease;
    display: inline-block;
    position: relative;
}

.nav-links a:hover,
.nav-links a.is-active {
    background: var(--ink-900);
    color: #fff;
    transform: translateY(-1px);
}

.nav-links a.is-active {
    box-shadow: inset 0 1px 0 rgba(255,255,255,.18);
}

.hero {
    background: var(--ink);
    color: var(--paper);
    padding: 0;
    position: relative;
}

.hero-fullscreen {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 700px;
    overflow: hidden;
}

.hero-banner {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-fullscreen::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.05) 40%, rgba(0,0,0,0.35) 100%);
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0 6rem;
    z-index: 2;
}

.hero-left-content {
    max-width: 45%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2rem;
}

.hero-logo {
    width: 100%;
    max-width: 420px;
    min-width: 260px;
    height: auto;
    display: block;
    filter: brightness(0) invert(1) drop-shadow(0 4px 40px rgba(0,0,0,0.3));
}

.hero-tagline {
    font-size: 1.4rem;
    font-weight: 200;
    letter-spacing: 4px;
    color: var(--paper);
    margin: 0;
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.hero-content {
    padding: 6rem 40px;
    text-align: center;
    background: var(--paper);
    color: var(--ink);
}

.hero-title {
    font-size: 4.5rem;
    margin-bottom: 2rem;
    font-weight: 300;
    letter-spacing: -2px;
    color: #000;
    line-height: 1.15;
    text-align: center;
}

.highlight {
    color: #000;
    font-weight: 300;
    font-size: 0.5em;
    vertical-align: super;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    font-weight: 300;
    letter-spacing: 0.5px;
    color: rgba(0, 0, 0, 0.7);
    text-align: center;
}

.hero-desc {
    font-size: 0.9rem;
    margin-bottom: 3rem;
    color: rgba(0, 0, 0, 0.5);
    max-width: 580px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 300;
    letter-spacing: 0.3px;
    text-align: center;
    line-height: 1.75;
}

.manifesto {
    background: var(--brand-red);
    color: var(--paper);
    padding: 10rem 0;
    overflow: hidden;
}

.manifesto-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    text-align: center;
}

.manifesto-text {
    font-size: 10rem;
    font-weight: 700;
    letter-spacing: -4px;
    line-height: 1;
    margin-bottom: 2rem;
    color: var(--paper);
}

.manifesto-sub {
    font-size: 1.2rem;
    font-weight: 300;
    letter-spacing: 4px;
    opacity: 0.8;
    text-transform: uppercase;
}

.works-section {
    background: var(--brand-paper);
    padding: 10rem 0;
}

.work-item {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 5rem;
    align-items: center;
    padding: 6rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    transition: opacity 0.3s ease;
}

.work-item:last-child {
    border-bottom: none;
}

.work-image {
    width: 100%;
    overflow: hidden;
    background: var(--brand-mist);
    border-radius: 4px;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04),
                0 1px 4px rgba(0, 0, 0, 0.02);
}

.work-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.work-image:hover img {
    transform: scale(1.02);
}

.work-title {
    font-size: 2.2rem;
    font-weight: 400;
    letter-spacing: -0.5px;
    margin-bottom: 1.25rem;
    color: var(--ink);
    line-height: 1.3;
}

.work-meta {
    font-size: 0.8rem;
    color: rgba(0, 0, 0, 0.45);
    letter-spacing: 0.5px;
    margin-bottom: 1.75rem;
    text-transform: uppercase;
    font-weight: 400;
}

.work-desc {
    font-size: 0.95rem;
    line-height: 1.85;
    color: rgba(0, 0, 0, 0.65);
    margin-bottom: 2rem;
    font-weight: 300;
}

.work-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #000;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-bottom: 1px solid rgba(0, 0, 0, 0.2);
    padding-bottom: 0.4rem;
    transition: all 0.3s ease;
}

.work-link:hover {
    border-bottom-color: #000;
    gap: 0.85rem;
}

.work-placeholder {
    grid-template-columns: 1.2fr 1fr;
    padding: 6rem 0;
}

.work-placeholder .work-image {
    aspect-ratio: 4 / 3;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.work-placeholder .work-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.work-pending {
    grid-template-columns: 1fr;
    max-width: 800px;
    padding: 4rem 0;
    opacity: 0.5;
}

.work-status {
    display: inline-block;
    font-size: 0.75rem;
    color: rgba(0, 0, 0, 0.5);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    border: 1px solid rgba(0, 0, 0, 0.15);
    padding: 0.5rem 1.2rem;
    border-radius: 2px;
    font-weight: 400;
}

.btn {
    display: inline-block;
    background: var(--ink-900);
    color: #fff;
    padding: 1rem 3.5rem;
    border-radius: 2px;
    text-decoration: none;
    font-weight: 400;
    font-size: 0.8rem;
    letter-spacing: 1.5px;
    transition: all 0.45s cubic-bezier(0.19, 1, 0.22, 1);
    border: 1px solid var(--ink-900);
    text-transform: uppercase;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

button.btn {
    appearance: none;
    cursor: pointer;
    font: inherit;
}

.btn:hover {
    background: var(--brand-paper);
    color: var(--ink-900);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.16);
    transform: translateY(-2px);
}

.section {
    padding: 8rem 0;
}

.section-alt {
    background: var(--brand-mist);
}

.section-title {
    font-size: 3rem;
    margin-bottom: 5rem;
    text-align: center;
    color: #000;
    font-weight: 300;
    letter-spacing: -1px;
}

.section-text {
    font-size: 1rem;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    line-height: 2;
    color: rgba(0, 0, 0, 0.65);
    font-weight: 300;
}

.about-content {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 6rem;
    max-width: 1100px;
    margin: 0 auto;
    align-items: start;
}

.profile-image {
    width: 100%;
}

.profile-image img {
    width: 100%;
    height: auto;
    display: block;
    filter: grayscale(100%);
}

.profile-text {
    text-align: left;
    padding-top: 1rem;
}

.profile-text p {
    margin-bottom: 2rem;
    line-height: 2;
    color: rgba(0, 0, 0, 0.65);
    font-weight: 300;
    font-size: 0.95rem;
}

.profile-text strong {
    font-weight: 500;
    color: #000;
}

@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .profile-image {
        max-width: 250px;
        margin: 0 auto;
    }

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

.projects-grid {
    display: flex;
    flex-direction: column;
    gap: 1px;
    margin-top: 4rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    background: rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.08);
}

.project-card {
    background: #fff;
    padding: 2.5rem 3rem;
    border-radius: 0;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 3rem;
    align-items: center;
}

.project-card:hover {
    background: #000;
    color: #fff;
    transform: none;
}

.project-card h3 {
    color: #000;
    margin-bottom: 0;
    font-weight: 400;
    font-size: 1.2rem;
    letter-spacing: 0.3px;
    transition: color 0.35s ease;
}

.project-card:hover h3 {
    color: #fff;
}

.project-card p {
    color: rgba(0, 0, 0, 0.65);
    font-weight: 300;
    line-height: 1.85;
    font-size: 0.95rem;
    margin: 0;
    transition: all 0.35s ease;
}

.project-card:hover p {
    color: rgba(255, 255, 255, 0.85);
}

.capability-box {
    max-width: 900px;
    margin: 0 auto;
    background: #fff;
    padding: 5rem 4.5rem;
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
}

.capability-box h3 {
    font-size: 2.2rem;
    color: #000;
    margin-bottom: 3rem;
    text-align: center;
    font-weight: 300;
    letter-spacing: -0.5px;
}

.capability-box > p {
    text-align: center;
    margin-bottom: 3rem;
    color: rgba(0, 0, 0, 0.65);
    font-weight: 300;
    line-height: 2;
    font-size: 0.95rem;
}

.capability-list {
    list-style: none;
    margin: 3rem 0;
}

.capability-list li {
    padding: 2rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    font-size: 1rem;
    color: rgba(0, 0, 0, 0.65);
    font-weight: 300;
    line-height: 1.85;
}

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

.capability-list li strong {
    font-weight: 500;
    color: #000;
    font-size: 1.05rem;
}

.highlight-text {
    margin-top: 3rem;
    padding: 2.5rem;
    background: #000;
    color: #fff;
    border-radius: 2px;
    font-weight: 300;
    text-align: center;
    line-height: 2;
    font-size: 1rem;
}

.footer {
    background: #000;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    padding: 3.5rem 0;
    font-weight: 300;
    font-size: 0.8rem;
    letter-spacing: 1.5px;
}

@media (max-width: 768px) {
    .hero-overlay {
        padding: 0 2rem;
        justify-content: center;
        text-align: center;
    }

    .hero-left-content {
        max-width: 100%;
        align-items: center;
    }

    .hero-logo {
        max-width: 280px;
    }

    .hero-tagline {
        font-size: 1rem;
        letter-spacing: 3px;
    }

    .hero-split {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
        height: auto;
        min-height: auto;
    }

    .hero-left {
        padding: 3rem;
        min-height: 300px;
    }

    .hero-logo {
        width: 70%;
        max-width: 300px;
    }

    .hero-right {
        height: 400px;
    }

    .hero-content {
        padding: 4rem 20px;
    }

    .hero-title {
        font-size: 3rem;
        letter-spacing: -1.5px;
    }

    .manifesto {
        padding: 6rem 0;
    }

    .manifesto-text {
        font-size: 4rem;
        letter-spacing: -2px;
    }

    .manifesto-sub {
        font-size: 0.9rem;
        letter-spacing: 2px;
    }

    .works-section {
        padding: 5rem 0;
    }

    .work-item {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 3rem 0;
    }

    .work-title {
        font-size: 1.8rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .section {
        padding: 5rem 0;
    }

    .container {
        padding: 0 20px;
    }

    .capability-box {
        padding: 3rem 2rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .profile-image {
        max-width: 280px;
        margin: 0 auto;
    }
}

/* ========================================
   深色主题基础样式
   ======================================== */

.section--dark {
    background: var(--ink-900);
    color: #fff;
}

.btn-accent {
    background: var(--brand-red);
    color: #fff;
    border: 1px solid var(--brand-red);
    font-weight: 500;
    box-shadow: 0 8px 24px rgba(215, 25, 32, 0.18);
}

.btn-accent:hover {
    background: var(--brand-red-dark);
    color: #fff;
    border-color: var(--brand-red-dark);
    box-shadow: 0 12px 30px rgba(215, 25, 32, 0.24);
}

.btn-ghost {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255,255,255,.3);
}

.btn-ghost:hover {
    background: rgba(255,255,255,.08);
    border-color: rgba(255,255,255,.5);
    color: #fff;
}

/* ========================================
   Hero 首屏
   ======================================== */

.hero.section--dark {
    padding: 0;
    min-height: 100vh;
    min-height: 100svh;
    background: var(--ink-900);
    color: #fff;
    overflow: hidden;
    position: relative;
}

.hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 15%;
    display: block;
    transform-origin: 58% 42%;
    will-change: transform;
}

.hero-overlay-dark {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg,
        rgba(11,11,13,0.88) 0%,
        rgba(11,11,13,0.75) 35%,
        rgba(11,11,13,0.35) 65%,
        rgba(11,11,13,0.1) 100%);
    z-index: 1;
}

.hero-inner {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: flex-start;
    padding: clamp(9rem, 17vh, 12rem) 40px 4rem;
}

.hero-content-wrapper {
    max-width: 620px;
    margin-bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    text-align: left;
}

.hero-brand {
    font-size: 0.8rem;
    letter-spacing: 2.5px;
    color: var(--text-dim);
    margin-bottom: 2.5rem;
    text-transform: uppercase;
    font-weight: 400;
}

.reg {
    font-size: 0.65em;
    vertical-align: super;
}

.hero-h1 {
    font-size: clamp(2.55rem, 4.05vw, 3.55rem);
    font-weight: 200;
    letter-spacing: 0;
    line-height: 1.16;
    margin-bottom: 1.75rem;
    color: #fff;
}

.hero-lead {
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--text-dim);
    margin-bottom: 2rem;
    max-width: 740px;
    font-weight: 300;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.hero-tagline {
    font-size: 0.85rem;
    letter-spacing: 4px;
    color: var(--text-faint);
    margin: 0;
}

.hero .btn {
    transition: background 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                color 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                border-color 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                box-shadow 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                transform 0.45s cubic-bezier(0.19, 1, 0.22, 1);
}

.hero .btn:hover {
    transform: translateY(-4px);
}

@media (prefers-reduced-motion: no-preference) {
    .hero-bg img {
        animation: hero-image-arrive 2.2s cubic-bezier(0.19, 1, 0.22, 1) both;
    }

    .hero-content-wrapper > * {
        opacity: 0;
        transform: translateY(28px) scale(0.985);
        animation: hero-copy-arrive 1.05s cubic-bezier(0.16, 1, 0.3, 1) both;
        will-change: transform, opacity;
    }

    .hero-h1 {
        animation-delay: 0.32s;
    }

    .hero-lead {
        animation-delay: 0.62s;
    }

    .hero-cta {
        animation-delay: 0.9s;
    }

    .hero-tagline {
        animation-delay: 1.14s;
    }
}

@keyframes hero-image-arrive {
    from {
        transform: scale(1.035);
        filter: brightness(0.82) saturate(0.92);
    }

    to {
        transform: scale(1);
        filter: brightness(1) saturate(1);
    }
}

@keyframes hero-copy-arrive {
    0% {
        opacity: 0;
        transform: translateY(28px) scale(0.985);
        filter: blur(6px);
    }

    65% {
        opacity: 1;
        transform: translateY(-2px) scale(1.006);
        filter: blur(0);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

.hero-visual {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: 220px 220px;
    gap: 1rem;
}

.visual-tile {
    overflow: hidden;
    border-radius: 8px;
    background: rgba(255,255,255,.03);
    border: 1px solid var(--line-dark);
}

.visual-main {
    grid-row: 1 / 3;
}

.visual-tile img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.7s ease;
}

.visual-tile:hover img {
    transform: scale(1.04);
}

/* ========================================
   信任背书条
   ======================================== */

.trust-strip {
    background: var(--brand-paper);
    padding: 2.5rem 0;
    border-bottom: 1px solid rgba(11,11,13,.06);
    overflow: hidden;
}

.trust-track {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.25rem 2rem;
    padding: 0 2rem;
}

.trust-item {
    font-size: 0.82rem;
    letter-spacing: 0.8px;
    color: rgba(11,11,13,.58);
    font-weight: 400;
    white-space: nowrap;
}

.trust-dot {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--brand-stone);
    flex-shrink: 0;
}

/* ========================================
   通用区块样式
   ======================================== */

.section-head {
    text-align: center;
    margin-bottom: 5rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.js-enabled .section-head,
.js-enabled .method-step,
.js-enabled .logic-card,
.js-enabled .case-item,
.js-enabled .service-card,
.js-enabled .problem-card,
.js-enabled .plan-card,
.js-enabled .about-grid,
.js-enabled .contact-content {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.8s cubic-bezier(0.19, 1, 0.22, 1),
                transform 0.8s cubic-bezier(0.19, 1, 0.22, 1);
}

.js-enabled .section-head.is-visible,
.js-enabled .method-step.is-visible,
.js-enabled .logic-card.is-visible,
.js-enabled .case-item.is-visible,
.js-enabled .service-card.is-visible,
.js-enabled .problem-card.is-visible,
.js-enabled .plan-card.is-visible,
.js-enabled .about-grid.is-visible,
.js-enabled .contact-content.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.js-enabled .method-step:nth-child(2),
.js-enabled .logic-card:nth-child(2),
.js-enabled .service-card:nth-child(2),
.js-enabled .problem-card:nth-child(2),
.js-enabled .plan-card:nth-child(2) {
    transition-delay: 0.06s;
}

.js-enabled .method-step:nth-child(3),
.js-enabled .logic-card:nth-child(3),
.js-enabled .service-card:nth-child(3),
.js-enabled .problem-card:nth-child(3),
.js-enabled .plan-card:nth-child(3) {
    transition-delay: 0.12s;
}

.js-enabled .method-step:nth-child(4),
.js-enabled .logic-card:nth-child(4),
.js-enabled .service-card:nth-child(4),
.js-enabled .problem-card:nth-child(4) {
    transition-delay: 0.18s;
}

.section-eyebrow {
    font-size: 0.75rem;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    opacity: 0.55;
    font-weight: 400;
}

.section-h2 {
    font-size: 2.6rem;
    font-weight: 300;
    letter-spacing: -0.8px;
    line-height: 1.3;
}

/* ========================================
   品牌问题区
   ======================================== */

.problems {
    padding: 9rem 0;
}

.problems .section-head {
    max-width: 820px;
    margin-bottom: 4.25rem;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--line-dark);
    border: 1px solid var(--line-dark);
}

.problem-card {
    background: var(--ink-900);
    border: 0;
    border-radius: 0;
    padding: 2.4rem 2.55rem 2.6rem;
    position: relative;
    overflow: hidden;
    transition: background 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                border-color 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                transform 0.45s cubic-bezier(0.19, 1, 0.22, 1);
}

.problem-card::after,
.method-step::after,
.plan-card::after {
    content: '';
    position: absolute;
    inset: auto 1.5rem 1.5rem auto;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-secondary);
    opacity: 0;
    transform: scale(0.4);
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.problem-card:hover {
    background: #111116;
    border-color: rgba(255,255,255,.15);
    transform: translateY(-4px);
}

.problem-card:hover::after,
.method-step:hover::after,
.plan-card:hover::after {
    opacity: 1;
    transform: scale(1);
}

.problem-num {
    font-size: 0.7rem;
    letter-spacing: 2.5px;
    color: var(--brand-stone);
    display: block;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.problem-card h3 {
    font-size: 1.46rem;
    font-weight: 400;
    margin-bottom: 1.15rem;
    color: #fff;
    letter-spacing: -0.2px;
    line-height: 1.35;
}

.problem-card p {
    font-size: 0.92rem;
    line-height: 1.9;
    color: var(--text-dim);
    font-weight: 300;
    max-width: 29em;
}

/* ========================================
   核心服务
   ======================================== */

.services {
    padding: 10rem 0;
    background: var(--brand-paper);
}

.service-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1px;
    background: rgba(11,11,13,.09);
    border: 1px solid rgba(11,11,13,.09);
    max-width: 1100px;
    margin: 0 auto;
}

.service-card {
    background: var(--paper);
    padding: 2rem 3rem;
    display: grid;
    grid-template-columns: 60px 1fr 2fr;
    gap: 1.5rem 2.5rem;
    align-items: start;
    position: relative;
    transition: background 0.4s cubic-bezier(0.19, 1, 0.22, 1),
                color 0.4s cubic-bezier(0.19, 1, 0.22, 1),
                transform 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}

.service-card::before {
    content: '';
    position: absolute;
    inset: 0 auto 0 0;
    width: 0;
    background: var(--ink-900);
    transition: width 0.45s cubic-bezier(0.19, 1, 0.22, 1);
}

.service-card:hover {
    background: #FBF8F1;
    transform: translateX(8px);
}

.service-card:hover::before {
    width: 4px;
}

.service-num {
    font-size: 0.75rem;
    letter-spacing: 2px;
    color: var(--brand-red);
    font-weight: 500;
    padding-top: 0.3rem;
}

.service-card h3 {
    font-size: 1.75rem;
    font-weight: 400;
    color: #000;
    letter-spacing: 0;
    line-height: 1.35;
}

.service-desc {
    font-size: 0.92rem;
    line-height: 1.65;
    color: rgba(0,0,0,.65);
    font-weight: 300;
    grid-column: 2 / 4;
    margin-top: 0.35rem;
}

.service-meta {
    display: grid;
    grid-template-columns: 90px 1fr;
    gap: 0.35rem 1.5rem;
    font-size: 0.82rem;
    grid-column: 2 / 4;
    margin-top: 0.2rem;
}

.service-meta dt {
    color: rgba(0,0,0,.4);
    font-weight: 400;
    letter-spacing: 0.3px;
}

.service-meta dd {
    color: rgba(0,0,0,.7);
    margin: 0;
}

/* ========================================
   方法论
   ======================================== */

.method {
    padding: 10rem 0;
}

.method-flow {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
}

.method-step {
    text-align: center;
    padding: 2.5rem 1.5rem;
    background: rgba(255,255,255,.03);
    border: 1px solid var(--line-dark);
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    transition: background 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                border-color 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                box-shadow 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                transform 0.45s cubic-bezier(0.19, 1, 0.22, 1);
    will-change: transform;
}

.method-step:hover {
    background: rgba(255,255,255,.06);
    border-color: rgba(255,255,255,.24);
    box-shadow: 0 24px 54px rgba(0, 0, 0, 0.28);
    transform: translateY(-10px) scale(1.045);
}

.step-num {
    font-size: 0.7rem;
    letter-spacing: 2.5px;
    color: var(--brand-stone);
    display: block;
    margin-bottom: 1.75rem;
    font-weight: 500;
}

.step-en {
    font-size: 1.2rem;
    font-weight: 400;
    color: #fff;
    margin-bottom: 0.5rem;
    letter-spacing: 0.3px;
}

.step-cn {
    font-size: 0.95rem;
    color: var(--text-dim);
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.step-desc {
    font-size: 0.82rem;
    line-height: 1.7;
    color: var(--text-faint);
    font-weight: 300;
}

/* ========================================
   商业设计核心逻辑
   ======================================== */

.logic {
    padding: 10rem 0;
    background: var(--brand-paper);
}

.logic-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1px;
    background: rgba(11, 11, 13, 0.1);
    border: 1px solid rgba(11, 11, 13, 0.1);
}

.logic-card {
    grid-column: span 2;
    min-height: 330px;
    padding: 2.4rem;
    background: #fbf8f1;
    position: relative;
    overflow: hidden;
    transition: background 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                transform 0.45s cubic-bezier(0.19, 1, 0.22, 1);
}

.logic-card-primary {
    grid-column: span 4;
    background: var(--ink-900);
    color: #fff;
}

.logic-card::after {
    content: '';
    position: absolute;
    inset: auto 0 0;
    height: 3px;
    background: var(--brand-red);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.45s cubic-bezier(0.19, 1, 0.22, 1);
}

.logic-card:hover {
    background: #fffdf7;
    transform: translateY(-4px);
}

.logic-card-primary:hover {
    background: #151515;
}

.logic-card:hover::after {
    transform: scaleX(1);
}

.logic-num {
    display: block;
    color: var(--brand-red);
    font-size: 0.76rem;
    letter-spacing: 2px;
    margin-bottom: 3rem;
}

.logic-kicker {
    margin-bottom: 1rem;
    color: rgba(11, 11, 13, 0.44);
    font-size: 0.72rem;
    letter-spacing: 1.8px;
    text-transform: uppercase;
}

.logic-card-primary .logic-kicker {
    color: rgba(255, 255, 255, 0.42);
}

.logic-card h3 {
    max-width: 420px;
    margin-bottom: 1.25rem;
    color: inherit;
    font-size: clamp(1.55rem, 2.5vw, 2.4rem);
    font-weight: 300;
    line-height: 1.22;
    letter-spacing: 0;
}

.logic-card p:last-child {
    max-width: 520px;
    color: rgba(11, 11, 13, 0.62);
    font-size: 0.95rem;
    line-height: 1.9;
    font-weight: 300;
}

.logic-card-primary p:last-child {
    color: rgba(255, 255, 255, 0.68);
}

.logic-note {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(11, 11, 13, 0.1);
    color: rgba(11, 11, 13, 0.52);
    font-size: 0.88rem;
    line-height: 1.7;
}

.logic-note a {
    color: var(--ink-900);
    text-decoration: none;
    border-bottom: 1px solid rgba(11, 11, 13, 0.24);
    white-space: nowrap;
    transition: color 0.3s ease, border-color 0.3s ease;
}

.logic-note a:hover {
    color: var(--brand-red);
    border-bottom-color: var(--brand-red);
}

/* ========================================
   项目实践
   ======================================== */

.cases {
    padding: 10rem 0;
    background: var(--brand-paper);
    counter-reset: case;
}

.case-item {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 5rem;
    align-items: start;
    padding: 5rem 0;
    border-bottom: 1px solid rgba(11,11,13,.08);
    counter-increment: case;
}

.case-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.case-item:first-of-type {
    padding-top: 0;
}

.case-visual {
    position: sticky;
    top: 8rem;
    overflow: hidden;
    border-radius: 8px;
    background: var(--ink-900);
    box-shadow: 0 6px 28px rgba(0,0,0,.08);
}

.case-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(180deg, rgba(0,0,0,0) 50%, rgba(0,0,0,.38) 100%);
    opacity: 0;
    transition: opacity 0.45s cubic-bezier(0.19, 1, 0.22, 1);
}

.case-visual::after {
    content: '0' counter(case) ' / CASE';
    position: absolute;
    left: 1.25rem;
    bottom: 1.15rem;
    z-index: 2;
    color: #fff;
    font-size: 0.72rem;
    letter-spacing: 2px;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                transform 0.45s cubic-bezier(0.19, 1, 0.22, 1);
}

.case-visual img {
    width: 100%;
    display: block;
    transition: transform 0.8s cubic-bezier(0.19, 1, 0.22, 1),
                filter 0.8s cubic-bezier(0.19, 1, 0.22, 1);
}

.case-item:hover .case-visual::before {
    opacity: 1;
}

.case-item:hover .case-visual::after {
    opacity: 1;
    transform: translateY(0);
}

.case-item:hover .case-visual img {
    transform: scale(1.045);
    filter: saturate(1.06) contrast(1.03);
}

.case-title {
    font-size: 1.9rem;
    font-weight: 400;
    margin-bottom: 0.6rem;
    color: #000;
    letter-spacing: -0.5px;
    line-height: 1.25;
    transition: color 0.35s ease, transform 0.35s ease;
}

.case-item:hover .case-title {
    color: var(--brand-red);
    transform: translateX(4px);
}

.case-meta {
    font-size: 0.78rem;
    color: rgba(0,0,0,.45);
    letter-spacing: 1px;
    margin-bottom: 2.5rem;
    text-transform: uppercase;
}

.case-story {
    display: grid;
    gap: 1.5rem;
}

.case-story dt {
    font-size: 0.72rem;
    letter-spacing: 1.5px;
    color: var(--brand-red);
    font-weight: 500;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

.case-story dd {
    font-size: 0.92rem;
    line-height: 1.85;
    color: rgba(0,0,0,.72);
    margin: 0 0 0.5rem 0;
    font-weight: 300;
}

/* ========================================
   关于发起人
   ======================================== */

.about.section--dark {
    padding: 9rem 0;
}

.about-grid {
    display: grid;
    grid-template-columns: minmax(260px, 360px) minmax(0, 1fr);
    gap: 6rem;
    align-items: start;
    max-width: 1060px;
    margin: 0 auto;
}

.about-visual img {
    width: 100%;
    border-radius: 8px;
    display: block;
    transition: transform 0.8s cubic-bezier(0.19, 1, 0.22, 1),
                filter 0.8s cubic-bezier(0.19, 1, 0.22, 1);
}

.about-visual {
    overflow: hidden;
    border-radius: 8px;
}

.about-visual:hover img {
    transform: scale(1.035);
    filter: contrast(1.04) saturate(1.05);
}

.about-logic {
    margin-top: 1.35rem;
    padding: 1.25rem 0 0;
    border-top: 1px solid var(--line-dark);
}

.about-logic-label {
    margin-bottom: 1rem;
    color: var(--text-faint);
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.about-logic-list {
    display: grid;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
}

.about-logic-list li {
    display: grid;
    grid-template-columns: 2.5rem minmax(0, 1fr);
    gap: 0.22rem 0.8rem;
    align-items: start;
    padding: 0.58rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    color: rgba(255, 255, 255, 0.74);
    font-size: 0.92rem;
    line-height: 1.5;
    font-weight: 300;
    transition: color 0.3s ease, transform 0.3s ease;
}

.about-logic-list li:first-child {
    border-top: 0;
}

.about-logic-list li span {
    grid-row: span 2;
    color: var(--brand-red);
    font-size: 0.68rem;
    letter-spacing: 1.4px;
    padding-top: 0.18rem;
}

.about-logic-list li strong {
    color: rgba(255, 255, 255, 0.78);
    font-size: 0.86rem;
    font-weight: 300;
    line-height: 1.35;
}

.about-logic-list li em {
    color: rgba(255, 255, 255, 0.34);
    font-size: 0.72rem;
    font-style: normal;
    line-height: 1.45;
}

.about-logic-list li:hover {
    color: #fff;
    transform: translateX(4px);
}

.about-logic-list li:hover strong {
    color: #fff;
}

.about-logic-list li:hover em {
    color: rgba(255, 255, 255, 0.56);
}

.about-h2 {
    font-size: 2.7rem;
    font-weight: 400;
    margin: 1.35rem 0 2rem;
    color: #fff;
    letter-spacing: -0.5px;
    line-height: 1.12;
}

.about-lead {
    font-size: 1.16rem;
    line-height: 1.82;
    color: var(--text-dim);
    margin-bottom: 2.4rem;
    font-weight: 300;
    max-width: 34em;
}

.about-copy {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2.2rem;
    padding-top: 2.15rem;
    border-top: 1px solid var(--line-dark);
}

.about-body {
    font-size: 1rem;
    line-height: 1.9;
    color: rgba(255, 255, 255, 0.46);
    margin-bottom: 0;
    font-weight: 300;
}

.awards-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.65rem;
    list-style: none;
    margin-top: 2.35rem;
    padding-top: 1.8rem;
    border-top: 1px solid var(--line-dark);
}

.awards-list li {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--text-dim);
    border: 1px solid var(--line-dark);
    border-radius: 999px;
    min-height: 2.55rem;
    padding: 0.45rem 0.72rem 0.45rem 0.45rem;
    font-size: 0.72rem;
    letter-spacing: 0.2px;
    white-space: nowrap;
    transition: color 0.3s ease, border-color 0.3s ease, transform 0.3s ease, background 0.3s ease;
}

.awards-list li:hover {
    color: #fff;
    border-color: rgba(255,255,255,.28);
    background: rgba(255,255,255,.035);
    transform: translateY(-2px);
}

.award-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.4rem;
    height: 1.4rem;
    border-radius: 50%;
    flex: 0 0 auto;
    color: #fff;
    font-size: 0.56rem;
    font-weight: 500;
    letter-spacing: 0;
    line-height: 1;
}

.award-icon-red {
    background: #d71920;
    color: #d71920;
    box-shadow: inset 0 0 0 5px #d71920, inset 0 0 0 7px rgba(255,255,255,0.92);
}

.award-icon-if {
    background: #101010;
    border: 1px solid rgba(255,255,255,.2);
    font-weight: 600;
}

.award-icon-a {
    background: #cc0000;
    font-size: 0.55rem;
    font-weight: 700;
}

.award-icon-jin {
    background: linear-gradient(135deg, #c99b47, #f0d28a);
    color: #101010;
    font-size: 0.62rem;
    font-weight: 600;
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--line-dark);
}

.award-item {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: 6px;
    background: rgba(255,255,255,.04);
    border: 1px solid var(--line-dark);
}

.award-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.award-item:hover img {
    transform: scale(1.05);
}

.contact-channels {
    display: flex;
    justify-content: center;
    gap: 0;
    margin: 0 auto;
    flex-wrap: wrap;
    border-top: 1px solid var(--line-dark);
    border-bottom: 1px solid var(--line-dark);
    max-width: 760px;
}

.contact-channel {
    text-align: center;
    flex: 1 1 280px;
    padding: 1.6rem 2rem;
    transition: background 0.35s ease;
}

.contact-channel + .contact-channel {
    border-left: 1px solid var(--line-dark);
}

.contact-channel:hover {
    background: rgba(255,255,255,.035);
}

.channel-label {
    font-size: 0.75rem;
    letter-spacing: 2px;
    color: var(--text-faint);
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}

.channel-value {
    font-size: 0.95rem;
    color: var(--text-dim);
    font-weight: 300;
    letter-spacing: 0.3px;
    text-decoration: none;
    transition: color 0.3s ease;
}

a.channel-value:hover {
    color: #fff;
}

.contact-qr {
    width: 140px;
    height: 140px;
    padding: 10px;
    background: #fff;
    border-radius: 8px;
    margin: 0 auto;
}

.contact-qr img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

/* ========================================
   合作方式
   ======================================== */

.plans {
    padding: 9rem 0;
    background: var(--brand-mist);
}

.plans .section-head {
    max-width: 760px;
    margin-bottom: 4.35rem;
}

.plan-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: rgba(11,11,13,.09);
    border: 1px solid rgba(11,11,13,.09);
}

.plan-card {
    background: var(--paper);
    border: 0;
    border-radius: 0;
    padding: 2.55rem 2.35rem 2.7rem;
    position: relative;
    overflow: hidden;
    transition: border-color 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                box-shadow 0.45s cubic-bezier(0.19, 1, 0.22, 1),
                transform 0.45s cubic-bezier(0.19, 1, 0.22, 1);
}

.plan-card:hover {
    border-color: rgba(0,0,0,.15);
    box-shadow: 0 18px 48px rgba(0,0,0,.07);
    transform: translateY(-5px);
}

.plan-card::after {
    background: var(--brand-red);
}

.plan-num {
    font-size: 0.7rem;
    letter-spacing: 2.5px;
    color: var(--brand-red);
    display: block;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.plan-card h3 {
    font-size: 1.55rem;
    font-weight: 400;
    margin-bottom: 1.15rem;
    color: #000;
    letter-spacing: -0.2px;
    line-height: 1.32;
}

.plan-desc {
    font-size: 0.92rem;
    line-height: 1.9;
    color: rgba(0,0,0,.65);
    margin-bottom: 2.3rem;
    font-weight: 300;
}

.plan-meta {
    display: grid;
    gap: 0;
    font-size: 0.82rem;
    padding-top: 0.6rem;
    border-top: 1px solid rgba(0,0,0,.06);
}

.plan-meta div {
    padding: 0.92rem 0;
    border-bottom: 1px solid rgba(0,0,0,.055);
}

.plan-meta dt {
    color: rgba(0,0,0,.4);
    font-weight: 400;
    margin-bottom: 0.3rem;
    letter-spacing: 0.3px;
}

.plan-meta dd {
    color: rgba(0,0,0,.72);
    margin: 0;
    line-height: 1.68;
}

.plan-meta div:last-child {
    border-bottom: 0;
}

/* ========================================
   联系
   ======================================== */

.contact.section--dark {
    padding: 9rem 0 8rem;
}

.contact-content {
    text-align: center;
    max-width: 960px;
    margin: 0 auto;
}

.contact-h2 {
    font-size: 2.85rem;
    font-weight: 300;
    letter-spacing: -0.5px;
    line-height: 1.38;
    margin-bottom: 1.5rem;
    color: #fff;
}

.contact-sub {
    max-width: 640px;
    margin: 0 auto 3rem;
    font-size: 0.96rem;
    line-height: 1.95;
    color: var(--text-dim);
    font-weight: 300;
}

.contact-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3.2rem;
    flex-wrap: wrap;
}

.wechat-copy-hint {
    min-height: 1.4rem;
    margin: -2.4rem auto 2rem;
    color: rgba(255, 255, 255, 0.44);
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    text-align: center;
}

/* ========================================
   响应式 - 新增部分
   ======================================== */

@media (max-width: 968px) {
    .navbar {
        top: 0.75rem;
        width: auto;
        max-width: calc(100vw - 24px);
    }

    .nav-capsule {
        width: auto;
        gap: 0.8rem;
        min-height: 48px;
        padding: 0 0.45rem 0 0;
        overflow-x: auto;
        border-radius: 28px;
    }

    .nav-logo {
        min-width: 108px;
        padding: 0 0.85rem;
        flex: 0 0 auto;
    }

    .nav-logo img {
        height: 22px;
    }

    .nav-links {
        flex: 0 0 auto;
        gap: 0;
    }

    .nav-links a {
        font-size: 0.78rem;
        padding: 0.38rem 0.62rem;
        white-space: nowrap;
    }

    .hero-bg img {
        object-position: 66% center;
    }

    .hero-overlay-dark {
        background: linear-gradient(90deg,
            rgba(11,11,13,0.92) 0%,
            rgba(11,11,13,0.76) 52%,
            rgba(11,11,13,0.3) 100%);
    }

    .hero-inner {
        padding-top: 8rem;
    }

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

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

    .logic-card,
    .logic-card-primary {
        grid-column: span 1;
        min-height: auto;
    }

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

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

    .service-card {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .service-desc,
    .service-meta {
        grid-column: 1;
    }

    .hero-h1 {
        font-size: 2.35rem;
    }

    .section-h2 {
        font-size: 1.8rem;
    }

    .hero-visual {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }

    .visual-main {
        grid-row: auto;
    }

    .case-item {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .case-visual {
        position: static;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .about-visual {
        max-width: 260px;
    }

    .about-copy {
        grid-template-columns: 1fr;
        gap: 1.35rem;
    }

    .hero-cta,
    .contact-cta {
        flex-direction: column;
    }

    .trust-track {
        justify-content: flex-start;
        overflow-x: auto;
        padding: 0 2rem;
        flex-wrap: nowrap;
    }
}

@media (max-width: 560px) {
    .container {
        padding: 0 20px;
    }

    .navbar {
        top: 0.65rem;
        max-width: calc(100vw - 18px);
    }

    .nav-capsule {
        width: calc(100vw - 24px);
        gap: 0.2rem;
        min-height: 42px;
        padding: 0 0.46rem 0 0;
        border-radius: 24px;
        overflow: visible;
    }

    .nav-logo {
        min-width: 104px;
        padding: 0 0.58rem;
    }

    .nav-logo:hover {
        min-width: 104px;
    }

    .nav-logo img {
        height: 20px;
    }

    .nav-links {
        flex: 1 1 auto;
        justify-content: space-between;
        min-width: 0;
    }

    .nav-links a {
        font-size: 0.74rem;
        line-height: 1;
        padding: 0.35rem 0.32rem;
        letter-spacing: 0;
        background: transparent;
        color: #000;
        box-shadow: none;
        transform: none;
    }

    .nav-links a:hover,
    .nav-links a.is-active {
        background: transparent;
        color: #000;
        box-shadow: none;
        transform: none;
    }

    .nav-links a.is-active {
        font-weight: 500;
    }

    .nav-links a.is-active::after {
        content: '';
        position: absolute;
        left: 50%;
        bottom: -0.45rem;
        width: 4px;
        height: 4px;
        border-radius: 999px;
        background: var(--brand-red);
        transform: translateX(-50%);
    }

    .hero.section--dark,
    .hero-inner {
        min-height: 720px;
    }

    .hero-bg img {
        object-position: 69% center;
    }

    .hero-overlay-dark {
        background: linear-gradient(180deg,
            rgba(11,11,13,0.78) 0%,
            rgba(11,11,13,0.72) 34%,
            rgba(11,11,13,0.82) 100%);
    }

    .hero-inner {
        padding-top: 7.6rem;
        padding-bottom: 2.5rem;
        align-items: flex-start;
    }

    .hero-content-wrapper {
        max-width: 100%;
    }

    .hero-h1 {
        max-width: 8.8em;
        font-size: 1.74rem;
        line-height: 1.22;
        letter-spacing: 0;
        margin-bottom: 1.35rem;
    }

    .hero-lead {
        max-width: 18.5em;
        font-size: 0.88rem;
        line-height: 1.82;
        margin-bottom: 1.6rem;
        color: rgba(255, 255, 255, 0.54);
    }

    .hero-cta {
        gap: 0.8rem;
        margin-bottom: 1.75rem;
    }

    .btn {
        width: min(100%, 15.2rem);
        text-align: center;
        padding: 0.88rem 1.1rem;
        font-size: 0.78rem;
    }

    .hero-tagline {
        font-size: 0.76rem;
        letter-spacing: 3px;
    }

    .method-flow,
    .logic-grid,
    .problem-grid {
        grid-template-columns: 1fr;
    }

    .service-card,
    .plan-card,
    .problem-card,
    .method-step,
    .logic-card {
        border-radius: 8px;
    }

    .services,
    .method,
    .logic,
    .cases,
    .problems,
    .plans,
    .about.section--dark,
    .contact.section--dark {
        padding: 6rem 0;
    }

    .service-card,
    .plan-card,
    .problem-card,
    .logic-card {
        padding: 1.65rem;
    }

    .logic-note {
        align-items: flex-start;
        flex-direction: column;
    }

    .awards-list {
        grid-template-columns: 1fr;
    }

    .service-meta {
        grid-template-columns: 1fr;
        gap: 0.35rem;
    }

    .case-title,
    .about-h2,
    .contact-h2 {
        font-size: 1.75rem;
    }

    .contact-sub {
        font-size: 0.9rem;
    }

    .contact-channel {
        padding: 1.35rem 1rem;
        flex-basis: 100%;
    }

    .contact-channel + .contact-channel {
        border-left: 0;
        border-top: 1px solid var(--line-dark);
    }
}