/* ============================================
   聚合仓官网 — Apple-inspired Design System
   ============================================ */

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

:root {
    /* Palette */
    --c-black:   #1d1d1f;
    --c-white:   #fbfbfd;
    --c-gray:    #86868b;
    --c-gray-lt: #f5f5f7;
    --c-accent:  #7061a8;
    --c-accent-lt: #8c78c8;
    --c-accent-bg: rgba(112, 97, 168, .06);
    --c-accent-bg2:rgba(112, 97, 168, .10);

    /* Type */
    --f-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text',
              'Helvetica Neue', Arial, sans-serif;

    /* Spacing */
    --s-section: 160px;
    --s-gap:     60px;
    --s-pad:     24px;

    /* Radius */
    --r-sm: 12px;
    --r-md: 20px;
    --r-lg: 28px;

    /* Transition */
    --t-base: .45s cubic-bezier(.25, .1, .25, 1);
    --t-fast: .25s cubic-bezier(.25, .1, .25, 1);
}

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

body {
    font-family: var(--f-sans);
    color: var(--c-black);
    background: var(--c-white);
    line-height: 1.5;
    overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a   { color: inherit; text-decoration: none; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 var(--s-pad); }

/* ---------- Reveal Animation ---------- */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity .8s cubic-bezier(.16, 1, .3, 1),
                transform .8s cubic-bezier(.16, 1, .3, 1);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   NAVIGATION
   ============================================ */
.acme-nav {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 9999;
    background: rgba(251, 251, 253, .72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: .5px solid rgba(0,0,0,.08);
    transition: background var(--t-fast);
}
.acme-nav.scrolled {
    background: rgba(251, 251, 253, .92);
}

.acme-nav-inner {
    max-width: 1120px; margin: 0 auto;
    padding: 0 var(--s-pad);
    height: 52px;
    display: flex; align-items: center; justify-content: space-between;
}

.acme-logo {
    display: flex; align-items: center; gap: 10px;
}
.acme-logo-img { height: 32px; width: auto; }
.acme-logo-label {
    font-size: 1.05rem; font-weight: 600;
    color: var(--c-accent);
    letter-spacing: -.01em;
}

.acme-nav-links { display: flex; gap: 32px; }
.acme-nav-links a {
    font-size: .82rem; font-weight: 500;
    color: var(--c-black);
    opacity: .8;
    transition: opacity var(--t-fast);
    letter-spacing: -.01em;
}
.acme-nav-links a:hover { opacity: 1; color: var(--c-accent); }

.acme-nav-toggle {
    display: none;
    background: none; border: none; cursor: pointer;
    width: 28px; height: 20px;
    position: relative;
}
.acme-nav-toggle span {
    display: block; width: 100%; height: 2px;
    background: var(--c-black);
    position: absolute; left: 0;
    transition: var(--t-fast);
}
.acme-nav-toggle span:first-child { top: 0; }
.acme-nav-toggle span:last-child  { top: 14px; }
.acme-nav-toggle.open span:first-child { top: 9px; transform: rotate(45deg); }
.acme-nav-toggle.open span:last-child  { top: 9px; transform: rotate(-45deg); }

.acme-mobile-menu {
    display: none;
    flex-direction: column;
    background: rgba(251,251,253,.98);
    backdrop-filter: saturate(180%) blur(20px);
    padding: 16px var(--s-pad) 24px;
    border-bottom: .5px solid rgba(0,0,0,.08);
}
.acme-mobile-menu a {
    font-size: 1rem; font-weight: 500;
    padding: 12px 0;
    color: var(--c-black);
    border-bottom: .5px solid rgba(0,0,0,.06);
}
.acme-mobile-menu a:last-child { border-bottom: none; }

/* ============================================
   HERO
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
    background: var(--c-black);
    text-align: center;
    padding: 120px var(--s-pad) 80px;
}

.hero-bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% 45%, rgba(112,97,168,.35) 0%, transparent 70%),
        radial-gradient(ellipse 50% 40% at 30% 70%, rgba(140,120,200,.20) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 75% 30%, rgba(80,60,160,.18) 0%, transparent 60%);
    z-index: 1;
    animation: heroPulse 8s ease-in-out infinite alternate;
}
@keyframes heroPulse {
    0%   { opacity: .75; transform: scale(1); }
    100% { opacity: 1;   transform: scale(1.06); }
}

.hero-content { position: relative; z-index: 2; max-width: 780px; }

.hero-logo {
    height: 80px; width: auto;
    margin: 0 auto 28px;
}

.hero-eyebrow {
    font-size: .95rem; font-weight: 600;
    color: var(--c-accent-lt);
    letter-spacing: .08em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 700;
    color: #fff;
    line-height: 1.05;
    letter-spacing: -.035em;
    margin-bottom: 24px;
}

.hero-sub {
    font-size: clamp(1rem, 2.2vw, 1.35rem);
    color: rgba(255,255,255,.6);
    font-weight: 400;
    max-width: 680px; margin: 0 auto 56px;
    letter-spacing: -.01em;
    white-space: nowrap;
}

.hero-stats {
    display: flex; justify-content: center; gap: 48px;
    flex-wrap: wrap;
}

.hero-stat {
    text-align: center;
}
.hero-stat-num {
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    font-weight: 700;
    color: #fff;
    letter-spacing: -.03em;
    font-variant-numeric: tabular-nums;
}
.hero-stat-unit {
    font-size: clamp(1rem, 2vw, 1.4rem);
    font-weight: 600;
    color: var(--c-accent-lt);
}
.hero-stat-label {
    display: block;
    font-size: .85rem;
    color: rgba(255,255,255,.45);
    margin-top: 4px;
    letter-spacing: .02em;
}

/* Scroll hint */
.hero-scroll-hint {
    position: absolute;
    bottom: 32px; left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}
.scroll-line {
    width: 1px; height: 56px;
    background: linear-gradient(to bottom, rgba(255,255,255,.5), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
    0%, 100% { opacity: 1; transform: scaleY(1); }
    50%      { opacity: .3; transform: scaleY(.6); }
}

/* ============================================
   SECTION SHARED
   ============================================ */
.section {
    padding: var(--s-section) 0;
    position: relative;
}

.section--light { background: var(--c-white); }
.section--dark  { background: var(--c-black); color: #fff; }
.section--tint  { background: var(--c-gray-lt); }
.section--cinematic {
    background: var(--c-black);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.section--cinematic::before {
    content: '';
    position: absolute; inset: 0;
    background: url('images/equipment.jpg') center / cover no-repeat;
    opacity: .35;
    filter: saturate(1.15);
    z-index: 0;
}
.vision-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(29,29,31,.80), rgba(29,29,31,.55));
    z-index: 1;
}
.section--cinematic .container { position: relative; z-index: 2; }

.section-eyebrow {
    font-size: .85rem; font-weight: 600;
    color: var(--c-accent);
    letter-spacing: .06em;
    text-transform: uppercase;
    margin-bottom: 12px;
    text-align: center;
}
.section--dark .section-eyebrow { color: var(--c-accent-lt); }

.section-title {
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    font-weight: 700;
    letter-spacing: -.03em;
    line-height: 1.08;
    text-align: center;
    margin-bottom: 24px;
}
.section--dark .section-title { color: #fff; }

.section-desc {
    font-size: clamp(1rem, 1.8vw, 1.2rem);
    color: var(--c-gray);
    max-width: 680px;
    text-align: center;
    margin: 0 auto var(--s-gap);
    line-height: 1.65;
    letter-spacing: -.01em;
}
.section--dark .section-desc { color: rgba(255,255,255,.55); }

/* ============================================
   ABOUT
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--s-gap);
    margin-top: var(--s-gap);
}

.about-card {
    text-align: center;
    padding: 48px 32px;
    border-radius: var(--r-lg);
    background: var(--c-gray-lt);
    transition: transform var(--t-base), box-shadow var(--t-base);
    position: relative;
    overflow: hidden;
}
.about-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(112,97,168,.12);
}

/* About card background images */
.about-card-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: .12;
    transition: opacity var(--t-base);
    z-index: 0;
    pointer-events: none;
}
.about-card:hover .about-card-bg { opacity: .18; }

.about-card--capital .about-card-bg {
    background-image: url('images/guimo.png');
}
.about-card--location .about-card-bg {
    background-image: url('images/dili.png');
}
.about-card--cert .about-card-bg {
    background-image: url('images/zhengjian.png');
}

/* Ensure content sits above bg */
.about-card > :not(.about-card-bg) {
    position: relative;
    z-index: 1;
}

.about-card-icon {
    font-size: 2.8rem;
    margin-bottom: 16px;
}
.about-card-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--c-accent);
    letter-spacing: -.02em;
}
.about-card-label {
    font-size: .9rem;
    color: var(--c-gray);
    margin-bottom: 12px;
}
.about-card-detail {
    font-size: .95rem;
    color: var(--c-gray);
    line-height: 1.55;
}

/* ============================================
   SERVICES (Dark Section)
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: var(--s-gap);
}

.service-tile {
    padding: 44px 32px;
    border-radius: var(--r-lg);
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.08);
    transition: transform var(--t-base), background var(--t-base), border-color var(--t-base);
}
.service-tile:hover {
    transform: translateY(-4px);
    background: rgba(255,255,255,.10);
    border-color: var(--c-accent);
}

.service-tile-icon {
    font-size: 2.4rem;
    margin-bottom: 20px;
}
.service-tile h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #fff;
    letter-spacing: -.01em;
    margin-bottom: 10px;
}
.service-tile p {
    font-size: .95rem;
    color: rgba(255,255,255,.55);
    line-height: 1.55;
}

/* ============================================
   TECHNOLOGY
   ============================================ */
.tech-showcase {
    display: flex; flex-direction: column;
    gap: var(--s-gap);
    margin-top: var(--s-gap);
}

.tech-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.tech-row--reverse .tech-row-visual { order: 2; }
.tech-row--reverse .tech-row-info  { order: 1; }

.tech-row-visual {
    border-radius: var(--r-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--c-gray-lt);
}
.tech-row-visual img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform var(--t-base);
}
.tech-row:hover .tech-row-visual img {
    transform: scale(1.04);
}

.tech-row-info h3 {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 700;
    letter-spacing: -.02em;
    margin-bottom: 16px;
    color: var(--c-black);
}
.tech-row-info p {
    font-size: 1.1rem;
    color: #48484a;
    line-height: 1.65;
}

/* ============================================
   FAQ
   ============================================ */
.faq-list {
    max-width: 760px;
    margin: var(--s-gap) auto 0;
}

.faq-item {
    border-bottom: .5px solid rgba(0,0,0,.1);
}
.faq-item:first-child { border-top: .5px solid rgba(0,0,0,.1); }

.faq-item summary {
    list-style: none;
    padding: 22px 0;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex; justify-content: space-between; align-items: center;
    letter-spacing: -.01em;
    transition: color var(--t-fast);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--c-gray);
    transition: transform var(--t-fast);
    flex-shrink: 0;
    margin-left: 16px;
}
.faq-item[open] summary::after {
    transform: rotate(45deg);
}
.faq-item summary:hover { color: var(--c-accent); }

.faq-answer {
    padding: 0 0 22px;
    animation: faqIn .35s ease;
}
@keyframes faqIn {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}
.faq-answer p {
    font-size: 1rem;
    color: var(--c-gray);
    line-height: 1.7;
}

/* ============================================
   VISION (Cinematic)
   ============================================ */
.vision-quote {
    font-size: clamp(1.6rem, 3.5vw, 2.6rem);
    font-weight: 500;
    color: rgba(255,255,255,.85);
    text-align: center;
    line-height: 1.35;
    letter-spacing: -.02em;
    margin: 56px auto;
    max-width: 640px;
    font-style: italic;
}
.vision-quote strong {
    display: block;
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 700;
    color: var(--c-accent-lt);
    margin-top: 12px;
    font-style: normal;
}

.vision-goals-card {
    max-width: 560px;
    margin: 0 auto;
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--r-lg);
    padding: 40px 44px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}
.vision-goals-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
}
.vision-goals-card ul { list-style: none; }
.vision-goals-card li {
    font-size: 1rem;
    color: rgba(255,255,255,.65);
    padding: 8px 0 8px 24px;
    position: relative;
    line-height: 1.55;
}
.vision-goals-card li::before {
    content: '✓';
    position: absolute; left: 0;
    color: #30d158;
    font-weight: 700;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--c-black);
    color: rgba(255,255,255,.5);
    padding: 64px 0 32px;
}

.footer-top {
    display: flex; justify-content: space-between; align-items: flex-start;
    padding-bottom: 36px;
    border-bottom: .5px solid rgba(255,255,255,.1);
    margin-bottom: 28px;
}
.footer-brand {
    display: flex; align-items: center; gap: 16px;
}
.footer-brand-img { height: 40px; width: auto; opacity: .85; }
.footer-brand h3 {
    font-size: 1rem; font-weight: 600; color: rgba(255,255,255,.85);
    margin-bottom: 2px;
}
.footer-brand p {
    font-size: .82rem; color: rgba(255,255,255,.35);
}

.footer-links {
    display: flex; gap: 28px;
}
.footer-links a {
    font-size: .85rem; font-weight: 500;
    color: rgba(255,255,255,.45);
    transition: color var(--t-fast);
}
.footer-links a:hover { color: var(--c-accent-lt); }

.footer-contact {
    display: flex; gap: 48px;
    padding-bottom: 28px;
    border-bottom: .5px solid rgba(255,255,255,.1);
    margin-bottom: 24px;
}
.footer-contact-item {
    display: flex; flex-direction: column; gap: 4px;
}
.footer-contact-label {
    font-size: .75rem;
    color: rgba(255,255,255,.3);
    text-transform: uppercase;
    letter-spacing: .04em;
}
.footer-contact-item span:last-child {
    font-size: .9rem;
    color: rgba(255,255,255,.55);
}

.footer-bottom {
    text-align: center;
}
.footer-bottom p {
    font-size: .8rem;
    color: rgba(255,255,255,.3);
}
.footer-icp { margin-top: 6px; }
.footer-icp a {
    font-size: .78rem;
    color: rgba(255,255,255,.25);
    transition: color var(--t-fast);
}
.footer-icp a:hover { color: var(--c-accent-lt); }

/* ============================================
   RESPONSIVE — Tablet (≤960px)
   ============================================ */
@media (max-width: 960px) {
    :root { --s-section: 120px; --s-gap: 40px; }

    .about-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .tech-row { grid-template-columns: 1fr; gap: 28px; }
    .tech-row--reverse .tech-row-visual { order: 0; }
    .tech-row--reverse .tech-row-info  { order: 0; }
}

/* ============================================
   MOBILE — Portrait / Small Tablets (≤768px)
   ============================================ */
@media (max-width: 768px) {
    :root {
        --s-section: 96px;
        --s-gap: 32px;
        --s-pad: 20px;
    }

    /* ---- Nav ---- */
    .acme-nav-links { display: none; }
    .acme-nav-toggle { display: block; }
    .acme-mobile-menu.open {
        display: flex;
    }

    /* ---- Hero ---- */
    .hero {
        min-height: 100dvh;
        padding: 88px var(--s-pad) 56px;
    }
    .hero-logo { height: 52px; margin-bottom: 18px; }
    .hero-eyebrow {
        font-size: .8rem;
        letter-spacing: .06em;
        margin-bottom: 14px;
    }
    .hero-title {
        font-size: clamp(2.2rem, 10vw, 3.6rem);
        line-height: 1.12;
        margin-bottom: 18px;
    }
    .hero-sub {
        font-size: .95rem;
        white-space: normal;
        max-width: 480px;
        line-height: 1.55;
        margin-bottom: 44px;
    }
    .hero-stats {
        gap: 20px;
    }
    .hero-stat-num {
        font-size: clamp(2rem, 7vw, 2.8rem);
    }
    .hero-stat-unit { font-size: 1.05rem; }
    .hero-stat-label { font-size: .78rem; }
    .hero-scroll-hint { bottom: 24px; }

    /* ---- About ---- */
    .about-card {
        padding: 36px 24px;
        border-radius: var(--r-md);
    }
    .about-card-icon { font-size: 2.3rem; }
    .about-card-value { font-size: 1.55rem; }
    .about-card-detail { font-size: .9rem; }

    /* ---- Services ---- */
    .services-grid { grid-template-columns: 1fr; gap: 16px; }
    .service-tile {
        padding: 28px 22px;
        border-radius: var(--r-md);
    }
    .service-tile-icon { font-size: 2rem; }
    .service-tile h3 { font-size: 1.15rem; }
    .service-tile p { font-size: .9rem; }

    /* ---- Tech ---- */
    .tech-row { gap: 20px; }
    .tech-row-visual {
        aspect-ratio: 16/9;
        border-radius: var(--r-md);
    }
    .tech-row-info { padding-top: 0; }
    .tech-row-info h3 {
        font-size: 1.3rem;
        margin-bottom: 10px;
    }
    .tech-row-info p {
        font-size: .95rem;
        color: #48484a;
        line-height: 1.7;
        -webkit-text-size-adjust: 100%;
    }

    /* ---- FAQ ---- */
    .faq-item summary {
        font-size: 1.02rem;
        padding: 18px 0;
    }
    .faq-item summary::after { font-size: 1.3rem; }
    .faq-answer p { font-size: .92rem; }

    /* ---- Vision ---- */
    .vision-quote {
        font-size: clamp(1.35rem, 4.5vw, 1.85rem);
        margin: 40px auto 0;
        line-height: 1.45;
    }
    .vision-quote strong {
        font-size: clamp(1.7rem, 5.5vw, 2.4rem);
    }
    .vision-goals-card {
        padding: 28px 22px;
        border-radius: var(--r-md);
    }
    .vision-goals-card h3 { font-size: 1.08rem; }
    .vision-goals-card li {
        font-size: .92rem;
        padding: 7px 0 7px 20px;
    }

    /* ---- Footer ---- */
    .footer { padding: 48px 0 24px; }
    .footer-top {
        flex-direction: column;
        gap: 20px;
        padding-bottom: 28px;
    }
    .footer-brand-img { height: 34px; }
    .footer-brand h3 { font-size: .95rem; }
    .footer-links {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 10px 16px;
    }
    .footer-links a {
        font-size: .82rem;
        padding: 6px 0;
    }
    .footer-contact {
        flex-direction: column;
        gap: 12px;
        padding-bottom: 22px;
    }
    .footer-contact-label { font-size: .7rem; }
    .footer-contact-item span:last-child { font-size: .86rem; }

    /* ---- Section shared ---- */
    .section-eyebrow { font-size: .78rem; letter-spacing: .05em; }
    .section-title { font-size: clamp(1.8rem, 6vw, 2.6rem); margin-bottom: 18px; }
    .section-desc { font-size: .95rem; max-width: 520px; }
}

/* ============================================
   MOBILE — Small phones (≤480px)
   ============================================ */
@media (max-width: 480px) {
    :root {
        --s-section: 72px;
        --s-gap: 24px;
        --s-pad: 16px;
    }

    .acme-nav-inner { height: 46px; }
    .acme-logo-label { font-size: .95rem; }
    .hero { padding: 80px var(--s-pad) 48px; }
    .hero-logo { height: 44px; margin-bottom: 14px; }
    .hero-eyebrow { font-size: .74rem; margin-bottom: 12px; }
    .hero-title {
        font-size: clamp(1.9rem, 11vw, 2.8rem);
        margin-bottom: 14px;
    }
    .hero-sub {
        font-size: .87rem;
        margin-bottom: 36px;
    }
    .hero-stats {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }
    .hero-stat-num { font-size: 2.2rem; }
    .hero-stat-unit { font-size: 1rem; }

    .about-card { padding: 26px 18px; border-radius: var(--r-sm); }
    .about-card-icon { font-size: 2rem; }
    .about-card-value { font-size: 1.35rem; }
    .about-card-label { font-size: .82rem; }
    .about-card-detail { font-size: .84rem; }

    .service-tile { padding: 24px 18px; border-radius: var(--r-sm); }
    .service-tile-icon { font-size: 1.8rem; }
    .service-tile h3 { font-size: 1.05rem; margin-bottom: 8px; }
    .service-tile p { font-size: .84rem; }

    .tech-row { gap: 16px; }
    .tech-row-visual { aspect-ratio: 16/9; border-radius: var(--r-sm); }
    .tech-row-info { padding-top: 0; }
    .tech-row-info h3 {
        font-size: 1.15rem;
        margin-bottom: 8px;
    }
    .tech-row-info p {
        font-size: .88rem;
        color: #48484a;
        line-height: 1.7;
        -webkit-text-size-adjust: 100%;
    }

    .faq-item summary { font-size: .94rem; padding: 16px 0; }
    .faq-answer p { font-size: .86rem; }

    .vision-quote { font-size: 1.25rem; margin: 32px auto 0; }
    .vision-quote strong { font-size: 1.55rem; }
    .vision-goals-card { padding: 22px 18px; border-radius: var(--r-sm); }
    .vision-goals-card li { font-size: .86rem; padding: 6px 0 6px 18px; }

    .section-eyebrow { font-size: .72rem; }
    .section-title { font-size: 1.7rem; margin-bottom: 14px; }
    .section-desc { font-size: .88rem; }

    .footer { padding: 40px 0 20px; }
    .footer-brand-img { height: 30px; }
    .footer-brand h3 { font-size: .9rem; }
    .footer-brand p { font-size: .76rem; }
    .footer-bottom p { font-size: .75rem; }
    .footer-icp a { font-size: .73rem; }
}

/* ============================================
   TOUCH OPTIMISATION — all mobile
   ============================================ */
@media (hover: none) and (pointer: coarse) {
    /* Disable hover transforms on touch devices to avoid sticky states */
    .about-card:hover,
    .service-tile:hover,
    .tech-row:hover .tech-row-visual img,
    .faq-item summary::after {
        transform: none !important;
    }
    /* Tap target minimum 44px for nav links */
    .acme-nav-links a,
    .acme-mobile-menu a {
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        -webkit-tap-highlight-color: rgba(112,97,168,.15);
    }
    /* Card tap feedback */
    .about-card,
    .service-tile,
    .faq-item summary {
        -webkit-tap-highlight-color: rgba(112,97,168,.12);
        cursor: pointer;
    }
    /* Smooth scroll on iOS Safari */
    html {
        scroll-behavior: smooth;
        -webkit-overflow-scrolling: touch;
    }
}

/* ============================================
   SAFE AREA INSETS — notched devices
   ============================================ */
@supports (padding: env(safe-area-inset-bottom)) {
    body {
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }
    .footer {
        padding-bottom: calc(24px + env(safe-area-inset-bottom));
    }
    .acme-nav {
        padding-top: env(safe-area-inset-top);
    }
}