/* ==========================================================================
   DoWell Software — corporate site (CargoSmart-inspired layout)
   Palette: brand blue #1d4f9c / brand red #d23a2c / deep navy #081f45
   ========================================================================== */

:root {
    --blue: #1d4f9c;
    --blue-dark: #123e7e;
    --navy: #081f45;
    --red: #d23a2c;
    --red-dark: #b02e22;
    --ink: #17233b;
    --muted: #5b6b85;
    --bg: #ffffff;
    --bg-alt: #f2f6fc;
    --line: #dfe7f3;
    --radius: 14px;
    --shadow: 0 10px 30px rgba(13, 47, 97, .10);
    --shadow-lg: 0 18px 50px rgba(13, 47, 97, .16);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.65;
}

img { max-width: 100%; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); }

.container { width: min(1160px, 92%); margin: 0 auto; }
.center { text-align: center; }

/* ---------- navbar ---------- */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, .95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
    transition: box-shadow .25s ease;
}
.navbar.scrolled { box-shadow: var(--shadow); }

.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }

.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { width: 44px; height: 38px; object-fit: contain; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 1.15rem; color: var(--navy); letter-spacing: .5px; }
.brand-text small { font-size: .72rem; color: var(--muted); }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links > a {
    padding: 9px 15px;
    color: var(--ink);
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: color .2s, border-color .2s;
}
.nav-links > a:hover { color: var(--blue); }
.nav-links > a.active { color: var(--blue); border-bottom-color: var(--blue); }
.nav-links > a.lang-switch { color: var(--muted); }
.nav-links > a.lang-switch:hover { color: var(--blue); }
.nav-links > a.nav-cta {
    margin-left: 12px;
    padding: 10px 22px;
    border: 0;
    border-radius: 6px;
    background: var(--blue);
    color: #fff;
    font-weight: 600;
    box-shadow: 0 6px 18px rgba(29, 79, 156, .30);
    transition: background .2s, transform .18s ease, box-shadow .2s;
}
.nav-links > a.nav-cta:hover { background: var(--blue-dark); color: #fff; transform: translateY(-1px); }
.nav-links > a.nav-cta.active { background: var(--blue-dark); color: #fff; border-bottom: 0; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: 0;
    cursor: pointer;
    padding: 8px;
}
.nav-toggle span { width: 24px; height: 2.5px; background: var(--navy); border-radius: 2px; transition: .25s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ---------- hero slider (CargoSmart style) ---------- */
.slider {
    position: relative;
    overflow: hidden;
    height: 540px;
    color: #fff;
    background: var(--navy);
}
.slides, .slide { position: absolute; inset: 0; }
.slide {
    opacity: 0;
    visibility: hidden;
    transition: opacity .7s ease, visibility .7s;
}
.slide.active { opacity: 1; visibility: visible; z-index: 2; }

.slide-1 { background:
        radial-gradient(900px 500px at 85% -10%, rgba(77, 163, 255, .35), transparent 60%),
        radial-gradient(700px 500px at 10% 110%, rgba(210, 58, 44, .28), transparent 55%),
        linear-gradient(135deg, #0a2a5e 0%, #0d2f61 45%, #081f45 100%); }
.slide-2 { background:
        radial-gradient(800px 480px at 85% 20%, rgba(125, 184, 255, .30), transparent 60%),
        linear-gradient(120deg, #10367c 0%, #1d4f9c 55%, #2a63b8 100%); }
.slide-3 { background:
        radial-gradient(800px 480px at 80% 30%, rgba(156, 214, 164, .25), transparent 60%),
        linear-gradient(120deg, #07223f 0%, #0d3a5c 55%, #14506e 100%); }

.slide-bg { position: absolute; inset: 0; pointer-events: none; }
.slide-deco { position: absolute; inset: 0; width: 100%; height: 100%; }

.hero-scene { position: absolute; left: 0; right: 0; bottom: 0; width: 100%; height: 100%; }
.hero-scene .ship { animation: float 6s ease-in-out infinite; }
.hero-scene .crate { animation: hoist 7s ease-in-out infinite; }
.hero-scene .crate2 { animation: hoist 8s ease-in-out infinite reverse; }
.hero-scene .circuit path { stroke-dasharray: 6 6; animation: dash 20s linear infinite; }
@keyframes float { 0%,100% { transform: translate(520px,330px) translateY(0); } 50% { transform: translate(520px,330px) translateY(-8px); } }
@keyframes hoist { 0%,100% { transform: translateY(0); } 50% { transform: translateY(26px); } }
@keyframes dash { to { stroke-dashoffset: -240; } }

.slide-inner {
    position: relative;
    z-index: 3;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding-bottom: 56px; /* room for dots */
}
.slide-tag {
    display: inline-block;
    padding: 6px 16px;
    border: 1px solid rgba(255, 255, 255, .45);
    border-radius: 999px;
    font-size: .9rem;
    letter-spacing: 2px;
    background: rgba(255, 255, 255, .08);
    margin: 0 0 4px;
}
.slide-title {
    font-size: clamp(1.9rem, 4.4vw, 3.1rem);
    font-weight: 800;
    line-height: 1.28;
    margin: 14px 0 14px;
    max-width: 18em;
    text-shadow: 0 2px 18px rgba(4, 18, 44, .35);
}
.slide-sub { font-size: 1.06rem; color: rgba(255, 255, 255, .88); max-width: 44em; margin: 0 0 30px; }
.slide-cta { display: flex; gap: 14px; flex-wrap: wrap; }

/* text entrance per active slide */
.slide .slide-tag, .slide .slide-title, .slide .slide-sub, .slide .slide-cta {
    transform: translateY(26px);
    opacity: 0;
    transition: transform .55s ease, opacity .55s ease;
}
.slide.active .slide-tag { transform: none; opacity: 1; transition-delay: .15s; }
.slide.active .slide-title { transform: none; opacity: 1; transition-delay: .28s; }
.slide.active .slide-sub { transform: none; opacity: 1; transition-delay: .42s; }
.slide.active .slide-cta { transform: none; opacity: 1; transition-delay: .55s; }

/* arrows + dots */
.slide-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 48px;
    height: 48px;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, .14);
    color: #fff;
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    transition: background .2s;
}
.slide-arrow:hover { background: rgba(255, 255, 255, .30); }
.slide-arrow.prev { left: 26px; }
.slide-arrow.next { right: 26px; }

.slide-dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 22px;
    z-index: 5;
    display: flex;
    justify-content: center;
    gap: 10px;
}
.slide-dots button {
    width: 34px;
    height: 4px;
    padding: 0;
    border: 0;
    border-radius: 2px;
    background: rgba(255, 255, 255, .35);
    cursor: pointer;
    transition: background .25s, width .25s;
}
.slide-dots button.active { background: #fff; width: 48px; }

/* ---------- buttons ---------- */
.btn {
    display: inline-block;
    padding: 13px 30px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    border: 1.5px solid transparent;
    cursor: pointer;
    transition: transform .18s ease, box-shadow .18s ease, background .18s, color .18s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--red); color: #fff; box-shadow: 0 8px 24px rgba(210, 58, 44, .35); }
.btn-primary:hover { background: var(--red-dark); color: #fff; }
.btn-blue { background: var(--blue); color: #fff; box-shadow: 0 8px 24px rgba(29, 79, 156, .32); }
.btn-blue:hover { background: var(--blue-dark); color: #fff; }
.btn-ghost { border-color: rgba(255, 255, 255, .7); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .14); color: #fff; }
.btn-outline { border-color: var(--blue); color: var(--blue); }
.btn-outline:hover { background: var(--blue); color: #fff; }
.btn-light { background: #fff; color: var(--blue); }
.btn-light:hover { background: #eef4fd; color: var(--blue-dark); }

/* ---------- stats ---------- */
.stats { margin-top: -58px; position: relative; z-index: 6; }
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 30px 26px;
}
.stat { text-align: center; }
.stat + .stat { border-left: 1px solid var(--line); }
.stat-num, .stat-text { font-size: 2rem; font-weight: 800; color: var(--blue); }
.stat-plus { font-size: 1.6rem; font-weight: 800; color: var(--red); }
.stat p { margin: 6px 0 0; color: var(--muted); font-size: .92rem; }

/* ---------- sections ---------- */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); }
.section-title { font-size: clamp(1.6rem, 3vw, 2.2rem); text-align: center; margin: 0 0 10px; color: var(--navy); }
.section-title::after {
    content: "";
    display: block;
    width: 64px;
    height: 4px;
    border-radius: 2px;
    margin: 14px auto 0;
    background: linear-gradient(90deg, var(--blue), var(--red));
}
.section-sub { text-align: center; color: var(--muted); max-width: 46em; margin: 14px auto 44px; }

/* ---------- solutions: horizontal cards (CargoSmart "Our Solutions") ---------- */
.sol-cards { display: grid; gap: 26px; margin-bottom: 44px; }
.sol-card {
    display: grid;
    grid-template-columns: 300px 1fr;
    align-items: stretch;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s;
}
.sol-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: #c9d9f2; }
.sol-media {
    display: grid;
    place-items: center;
    color: #fff;
    min-height: 170px;
}
.sol-media svg { width: 74px; height: 74px; opacity: .95; }
.media-blue { background: linear-gradient(135deg, #1d4f9c, #2a63b8); }
.media-teal { background: linear-gradient(135deg, #0e7d8a, #14a0ae); }
.media-navy { background: linear-gradient(135deg, #0d2f61, #1d4f9c); }
.sol-body { padding: 30px 34px; }
.sol-body h3 { margin: 0 0 10px; color: var(--navy); font-size: 1.35rem; }
.sol-body p { margin: 0; color: var(--muted); font-size: 1rem; }

/* ---------- why us: image-top cards (CargoSmart "We offer") ---------- */
.offer-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    margin-top: 44px;
}
.offer-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform .22s ease, box-shadow .22s ease;
}
.offer-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.offer-media {
    height: 130px;
    display: grid;
    place-items: center;
    color: #fff;
}
.offer-media svg { width: 54px; height: 54px; }
.om-1 { background: linear-gradient(135deg, #1d4f9c, #3d78d0); }
.om-2 { background: linear-gradient(135deg, #0e7d8a, #1bb3c2); }
.om-3 { background: linear-gradient(135deg, #b02e22, #d25a3a); }
.om-4 { background: linear-gradient(135deg, #0d2f61, #2456a8); }
.offer-body { padding: 20px 22px 24px; }
.offer-body h3 { margin: 0 0 8px; font-size: 1.12rem; color: var(--navy); }
.offer-body p { margin: 0; color: var(--muted); font-size: .94rem; }

/* ---------- generic cards (solutions / technology pages) ---------- */
.cards { display: grid; gap: 22px; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.cards.four { grid-template-columns: repeat(4, 1fr); }

.card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 30px 26px;
    box-shadow: var(--shadow);
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: #c9d9f2; }
.card h3 { margin: 14px 0 8px; color: var(--navy); font-size: 1.18rem; }
.card p { margin: 0; color: var(--muted); font-size: .96rem; }

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    color: var(--blue);
    background: linear-gradient(135deg, #e8f0fb, #f6f9ff);
}
.card-icon svg { width: 28px; height: 28px; }
.modules .card:nth-child(3n+2) .card-icon { color: var(--red); background: linear-gradient(135deg, #fdecea, #fff7f5); }

.mini-card {
    background: #fff;
    border: 1px solid var(--line);
    border-left: 4px solid var(--blue);
    border-radius: 10px;
    padding: 22px 20px;
    transition: transform .2s ease, box-shadow .2s ease;
}
.mini-card:nth-child(even) { border-left-color: var(--red); }
.mini-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.mini-card h3 { margin: 0 0 8px; font-size: 1.08rem; color: var(--navy); }
.mini-card p { margin: 0; color: var(--muted); font-size: .94rem; }
.mini-card .card-icon { margin-bottom: 12px; }

/* ---------- page head ---------- */
.page-head {
    padding: 84px 0 56px;
    color: #fff;
    background:
        radial-gradient(700px 320px at 90% 0%, rgba(77, 163, 255, .30), transparent 60%),
        linear-gradient(135deg, #0a2a5e, #081f45);
}
.page-head h1 { margin: 0 0 10px; font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
.page-head .lead { margin: 0; color: rgba(255, 255, 255, .85); font-size: 1.1rem; max-width: 44em; }

/* ---------- about ---------- */
.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: start; }
.about-text p { font-size: 1.05rem; color: var(--ink); }
.about-logo { width: 160px; margin-top: 18px; }

.info-panel {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px;
}
.info-panel h2 { margin: 0 0 16px; font-size: 1.25rem; color: var(--navy); }
.info-list { margin: 0; }
.info-list dt { font-weight: 700; color: var(--blue); margin-top: 14px; }
.info-list dt:first-child { margin-top: 0; }
.info-list dd { margin: 4px 0 0; color: var(--ink); }

/* ---------- technology ---------- */
.topo {
    margin: 0;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 18px;
}
.topo img { display: block; width: 100%; border-radius: 8px; }

/* ---------- contact (address + phone only) ---------- */
.contact-cards-wide {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
    max-width: 1060px;
    margin: 0 auto;
}
.contact-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px 30px;
    text-align: center;
    transition: transform .22s ease, box-shadow .22s ease;
}
.contact-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.contact-icon {
    width: 62px;
    height: 62px;
    margin: 0 auto 16px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    color: #fff;
    background: linear-gradient(135deg, var(--blue), #3d78d0);
}
.contact-icon svg { width: 30px; height: 30px; }
.contact-card h3 { margin: 0 0 10px; font-size: 1.2rem; color: var(--navy); }
.contact-card p { margin: 0; color: var(--muted); font-size: 1.05rem; line-height: 1.8; }

/* ---------- cta banner ---------- */
.cta-banner {
    padding: 72px 0;
    color: #fff;
    background:
        radial-gradient(600px 300px at 15% 20%, rgba(255, 255, 255, .12), transparent 60%),
        linear-gradient(120deg, var(--blue) 0%, var(--blue-dark) 55%, var(--navy) 100%);
}
.cta-banner h2 { margin: 0 0 10px; font-size: clamp(1.5rem, 2.8vw, 2rem); }
.cta-banner p { margin: 0 0 26px; color: rgba(255, 255, 255, .88); }

/* ---------- footer ---------- */
.footer { background: var(--navy); color: #c8d6ee; }
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 30px;
    padding: 54px 0 34px;
}
.footer-logo { width: 64px; border-radius: 8px; background: #fff; padding: 4px; }
.footer-brand p { margin: 10px 0 0; }
.footer-tag { color: #8fa7cf; font-size: .9rem; }
.footer-col h4 { color: #fff; margin: 0 0 12px; font-size: 1rem; }
.footer-col p { margin: 6px 0; font-size: .94rem; }
.footer-col a { color: #c8d6ee; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .14); padding: 16px 0; font-size: .88rem; color: #8fa7cf; }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 6px 18px; }
.footer-bottom a { color: #8fa7cf; }
.footer-bottom a:hover { color: #fff; }

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    .hero-scene .ship, .hero-scene .crate, .hero-scene .crate2, .hero-scene .circuit path { animation: none; }
    .slide, .slide .slide-tag, .slide .slide-title, .slide .slide-sub, .slide .slide-cta { transition: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 960px) {
    .cards.four { grid-template-columns: repeat(2, 1fr); }
    .cards.three { grid-template-columns: repeat(2, 1fr); }
    .offer-cards { grid-template-columns: repeat(2, 1fr); }
    .sol-card { grid-template-columns: 220px 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .stat + .stat { border-left: 0; }
    .about-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .slider { height: 500px; }
}

@media (max-width: 640px) {
    .nav-links {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: #fff;
        border-bottom: 1px solid var(--line);
        box-shadow: var(--shadow);
        padding: 8px 4% 14px;
    }
    .nav-links.open { display: flex; }
    .nav-links > a { padding: 12px 10px; border-bottom: 0; border-radius: 6px; }
    .nav-links > a:hover { background: var(--bg-alt); }
    .nav-links > a.lang-switch { text-align: left; }
    .nav-links > a.nav-cta { margin: 10px 0 0; text-align: center; }
    .nav-toggle { display: flex; }

    .slider { height: 460px; }
    .slide-arrow { width: 38px; height: 38px; font-size: 1rem; }
    .slide-arrow.prev { left: 10px; }
    .slide-arrow.next { right: 10px; }
    .slide-inner { padding-bottom: 70px; }

    .cards.three, .cards.four { grid-template-columns: 1fr; }
    .offer-cards { grid-template-columns: 1fr; }
    .sol-card { grid-template-columns: 1fr; }
    .sol-media { min-height: 120px; }
    .contact-cards-wide { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}