* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    /* zzidc 智算页真实配色 */
    --dark-bg: #1e1d2b;
    --dark-bg-2: #17161f;
    --dark-header: #14131c;
    --dark-border: #363a40;

    --light-bg: #ffffff;
    --light-bg-2: #f5f6fa;
    --light-border: #e5e8ef;

    --text-dark: #ffffff;
    --text-sub-dark: #97a0b4;
    --text-dim-dark: #6d7488;

    --text-light: #213152;
    --text-sub-light: #5a6580;
    --text-dim-light: #97a0b4;

    --primary: #4251b6;
    --primary-2: #5c6cd0;
    --primary-dark: #34419a;

    --orange: #f5a623;
    --orange-2: #ffb949;
    --orange-dark: #d18b0e;

    --teal: #3fd7c1;
    --teal-2: #5ee8d3;
    --teal-dark: #2ab5a1;

    --danger: #ff5a5f;
}
body { font-family: "Microsoft YaHei","PingFang SC",-apple-system,sans-serif; background: var(--light-bg); color: var(--text-light); font-size: 14px; line-height: 1.6; }
a { color: inherit; text-decoration: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header - dark navy like zzidc top */
header { background: var(--dark-header); border-bottom: 1px solid rgba(255,255,255,0.06); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; }
.brand-icon { width: 34px; height: 34px; background: linear-gradient(135deg, var(--primary), var(--primary-2)); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 800; font-size: 15px; }
.brand b { font-size: 17px; letter-spacing: 0.5px; }
.brand small { color: var(--text-dim-dark); font-size: 12px; margin-left: 6px; }
nav ul { display: flex; list-style: none; gap: 2px; }
nav li a { display: block; padding: 8px 16px; color: var(--text-sub-dark); font-size: 14px; border-radius: 4px; transition: color 0.2s; }
nav li a:hover, nav li a.active { color: #fff; }
.header-phone { font-size: 12px; color: var(--text-dim-dark); }
.header-phone strong { color: var(--orange); font-size: 16px; font-weight: 700; }

/* Hero - deep navy-purple like zzidc smart computing banner */
.hero {
    position: relative;
    overflow: hidden;
    padding: 100px 20px 110px;
    text-align: center;
    color: #fff;
    background:
            radial-gradient(ellipse at 20% 30%, rgba(66,81,182,0.32), transparent 50%),
            radial-gradient(ellipse at 80% 70%, rgba(92,108,208,0.18), transparent 50%),
            #1e1d2b;
}
.hero::before {
    content: '';
    position: absolute; inset: 0;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='60' height='60'><path d='M0 30H60M30 0V60' stroke='%235c6cd0' stroke-width='0.4' opacity='0.12'/></svg>");
    pointer-events: none;
}
.hero-content { position: relative; z-index: 1; }
.hero h1 { font-size: 46px; font-weight: 700; margin-bottom: 20px; line-height: 1.25; letter-spacing: -0.5px; }
.cunchu-tit em { color: var(--primary-2); font-style: normal; }
.hero p { color: var(--text-sub-dark); font-size: 15px; max-width: 760px; margin: 0 auto 32px; line-height: 1.9; }
.fwq-detail b { color: var(--orange); font-weight: 500; }
.fwq-detail .hi { color: var(--primary-2); font-weight: 500; }
.fwq-detail .po { color: var(--teal); font-weight: 500; }
.hero-btns { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; height: 44px; padding: 0 28px; border-radius: 4px; font-size: 14px; font-weight: 500; border: 1px solid transparent; cursor: pointer; transition: all 0.25s; gap: 6px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); box-shadow: 0 6px 20px rgba(66,81,182,0.4); }
.btn-orange { background: var(--orange); color: #1e1d2b; }
.btn-orange:hover { background: var(--orange-2); box-shadow: 0 6px 20px rgba(245,166,35,0.35); }
.btn-white { background: #fff; color: #213152; }
.btn-white:hover { background: #f0f2f8; box-shadow: 0 6px 20px rgba(0,0,0,0.15); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.35); }
.btn-ghost:hover { border-color: #fff; }

/* Section */
section { padding: 80px 0; position: relative; }
.sec-head { margin-bottom: 40px; text-align: center; }
.sec-head.left { text-align: left; }
.sec-num { font-size: 12px; color: var(--text-dim-light); letter-spacing: 2px; margin-bottom: 6px; font-family: "Consolas", monospace; }
.sec-num em { color: var(--text-sub-light); margin-left: 6px; font-style: normal; }
.sec-head h2 { font-size: 34px; font-weight: 700; letter-spacing: -0.5px; margin-bottom: 14px; color: var(--text-light); }
.sec-head p { color: var(--text-sub-light); font-size: 14px; max-width: 660px; line-height: 1.9; }
.sec-head.center p { margin: 0 auto; }

/* Category Tag */
.cat-tag { display: inline-flex; align-items: center; gap: 12px; padding: 8px 18px; border-radius: 4px; font-size: 13px; margin-bottom: 22px; font-weight: 500; }
.cat-tag .en { font-family: "Consolas","Arial",sans-serif; font-weight: 700; letter-spacing: 2px; }
.cat-tag .cn { padding: 0 12px; opacity: 0.85; }
.cat-orange { background: rgba(245,166,35,0.12); color: var(--orange-dark); border: 1px solid rgba(245,166,35,0.35); }
.cat-blue { background: rgba(66,81,182,0.10); color: var(--primary); border: 1px solid rgba(66,81,182,0.35); }
.cat-teal { background: rgba(63,215,193,0.12); color: var(--teal-dark); border: 1px solid rgba(63,215,193,0.4); }

/* GPU Cards - light theme */
.light-block { background: var(--light-bg-2); }
.gpu-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 60px; }
.gpu-card {
    background: #fff;
    border: 1px solid var(--light-border);
    border-radius: 10px;
    padding: 26px;
    transition: all 0.3s;
    position: relative;
    display: flex;
    flex-direction: column;
}
.gpu-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(66,81,182,0.12); }
.gpu-card.flagship { border-top: 3px solid var(--orange); }
.gpu-card.highend { border-top: 3px solid var(--primary); }
.gpu-card.popular { border-top: 3px solid var(--teal); }
.gpu-card.flagship:hover { border-color: var(--orange); border-top-color: var(--orange); }
.gpu-card.highend:hover { border-color: var(--primary-2); border-top-color: var(--primary); }
.gpu-card.popular:hover { border-color: var(--teal); border-top-color: var(--teal); }

.gpu-head { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 6px; }
.gpu-name { font-size: 22px; font-weight: 700; letter-spacing: 0.5px; color: var(--text-light); }
.gpu-badge { padding: 3px 10px; border-radius: 4px; font-size: 11px; font-weight: 500; }
.gpu-badge.orange { color: var(--orange-dark); border: 1px solid rgba(245,166,35,0.5); background: rgba(245,166,35,0.10); }
.gpu-badge.blue { color: var(--primary); border: 1px solid rgba(66,81,182,0.4); background: rgba(66,81,182,0.08); }
.gpu-badge.teal { color: var(--teal-dark); border: 1px solid rgba(63,215,193,0.5); background: rgba(63,215,193,0.10); }
.gpu-sub { color: var(--text-dim-light); font-size: 12.5px; margin-bottom: 22px; letter-spacing: 0.5px; }

.vram-row { display: flex; justify-content: space-between; align-items: baseline; padding: 8px 0 4px; }
.vram-row .label { color: var(--text-sub-light); font-size: 13px; }
.vram-row .value { font-size: 20px; font-weight: 700; letter-spacing: 0.5px; }
.vram-row.orange .value { color: var(--orange-dark); }
.vram-row.blue .value { color: var(--primary); }
.vram-row.teal .value { color: var(--teal-dark); }
.vram-bar { height: 3px; border-radius: 2px; background: #eef0f5; margin-bottom: 14px; overflow: hidden; }
.vram-bar .fill { height: 100%; border-radius: 2px; }
.vram-bar.orange .fill { background: linear-gradient(90deg, var(--orange), var(--orange-2)); }
.vram-bar.blue .fill { background: linear-gradient(90deg, var(--primary), var(--primary-2)); }
.vram-bar.teal .fill { background: linear-gradient(90deg, var(--teal), var(--teal-2)); }

.spec-rows { border-top: 1px solid var(--light-border); padding-top: 8px; margin-bottom: 20px; flex: 1 0 auto; }
.spec-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 9px 0; border-bottom: 1px dashed #edeff5; font-size: 13px; }
.spec-row:last-child { border-bottom: none; }
.spec-row .k { color: var(--text-sub-light); flex: 1 1 auto; min-width: 0; line-height: 1.5; }
.spec-row .k em { font-style: normal; }
.spec-row .k em.o { color: var(--orange-dark); font-weight: 700; }
.spec-row .k em.b { color: var(--primary); font-weight: 700; }
.spec-row .k em.t { color: var(--teal-dark); font-weight: 700; }
.spec-row .v { color: var(--text-light); font-weight: 600; white-space: nowrap; text-align: right; flex: 0 0 auto; font-variant-numeric: tabular-nums; }

.pill-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; padding-top: 14px; border-top: 1px solid var(--light-border); }
.pill { padding: 4px 10px; font-size: 11.5px; border-radius: 3px; }
.pill.orange { background: rgba(245,166,35,0.10); color: var(--orange-dark); border: 1px solid rgba(245,166,35,0.3); }
.pill.blue { background: rgba(66,81,182,0.08); color: var(--primary); border: 1px solid rgba(66,81,182,0.3); }
.pill.teal { background: rgba(63,215,193,0.10); color: var(--teal-dark); border: 1px solid rgba(63,215,193,0.35); }

/* Sub category head (inside light block) */
.subcat-head { text-align: center; margin-top: 20px; margin-bottom: 40px; }

/* Compare table block */
.compare-block { background: #fff; }
.compare-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--light-border);
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 8px 28px rgba(20, 27, 54, 0.06);
    position: relative;
}
.compare-table-wrap::before {
    content: '';
    position: absolute;
    left: 0; right: 0; top: 0; height: 3px;
    background: linear-gradient(90deg, var(--orange) 0%, var(--orange) 33%, var(--primary) 33%, var(--primary) 66%, var(--teal) 66%, var(--teal) 100%);
    border-radius: 12px 12px 0 0;
    z-index: 1;
}
.compare-table { width: 100%; border-collapse: collapse; font-size: 13px; table-layout: auto; }
.compare-table thead th {
    background: linear-gradient(180deg, #f8f9fc 0%, #f2f4f9 100%);
    color: var(--text-sub-light);
    font-weight: 600;
    text-align: left;
    padding: 16px 12px;
    border-bottom: 2px solid var(--light-border);
    white-space: nowrap;
    letter-spacing: 0.3px;
    font-size: 12.5px;
}
.compare-table thead th:first-child { padding-left: 20px; }
.compare-table thead th:last-child { padding-right: 20px; }
.compare-table tbody td {
    padding: 14px 12px;
    border-bottom: 1px solid #eef0f5;
    color: var(--text-light);
    white-space: nowrap;
    vertical-align: middle;
}
.compare-table tbody td:first-child { padding-left: 20px; }
.compare-table tbody td:last-child { padding-right: 20px; }
.compare-table tbody tr:nth-child(even) td { background: #fafbfd; }
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr { transition: background 0.2s; }
.compare-table tbody tr:hover td { background: rgba(66,81,182,0.06); }
.compare-table td.name { font-weight: 700; color: var(--text-light); font-size: 13.5px; }
.compare-table td.compute { font-weight: 700; font-variant-numeric: tabular-nums; color: var(--text-light); }
.compare-table td.compute .unit {
    display: inline-block;
    margin-left: 6px;
    padding: 1px 6px;
    font-size: 10.5px;
    font-style: normal;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--text-sub-light);
    background: #eef1f7;
    border-radius: 3px;
    vertical-align: 1px;
}
.compare-table td.rec { white-space: normal; min-width: 200px; color: var(--text-sub-light); line-height: 1.6; font-size: 12.5px; }
.compare-table .tier-badge {
    display: inline-block;
    padding: 3px 10px;
    font-size: 11.5px;
    border-radius: 3px;
    font-weight: 600;
    letter-spacing: 0.5px;
}
.compare-table .tier-badge.orange { background: rgba(245,166,35,0.12); color: var(--orange-dark); border: 1px solid rgba(245,166,35,0.32); }
.compare-table .tier-badge.blue { background: rgba(66,81,182,0.10); color: var(--primary); border: 1px solid rgba(66,81,182,0.32); }
.compare-table .tier-badge.teal { background: rgba(63,215,193,0.12); color: var(--teal-dark); border: 1px solid rgba(63,215,193,0.38); }
.tier-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 8px; vertical-align: middle; }
.tier-dot.orange { background: var(--orange); box-shadow: 0 0 0 3px rgba(245,166,35,0.16); }
.tier-dot.blue { background: var(--primary); box-shadow: 0 0 0 3px rgba(66,81,182,0.14); }
.tier-dot.teal { background: var(--teal); box-shadow: 0 0 0 3px rgba(63,215,193,0.18); }
.compare-note { margin-top: 16px; color: var(--text-dim-light); font-size: 12.5px; line-height: 1.9; }
.compare-note b { color: var(--text-sub-light); font-weight: 600; }

/* Scenarios - white block */
.scene-block { background: #fff; }
.scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.scene-card {
    background: var(--light-bg-2);
    border: 1px solid var(--light-border);
    border-radius: 10px;
    padding: 26px 22px;
    transition: all 0.3s;
}
.scene-card:hover { background: #fff; border-color: var(--primary-2); transform: translateY(-3px); box-shadow: 0 12px 28px rgba(66,81,182,0.12); }
.scene-icon { width: 40px; height: 40px; border-radius: 8px; background: rgba(66,81,182,0.10); color: var(--primary); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; font-size: 20px; }
.scene-card:nth-child(4n+2) .scene-icon { background: rgba(245,166,35,0.12); color: var(--orange-dark); }
.scene-card:nth-child(4n+3) .scene-icon { background: rgba(63,215,193,0.14); color: var(--teal-dark); }
.scene-card:nth-child(4n) .scene-icon { background: rgba(255,90,95,0.10); color: var(--danger); }
.scene-card h4 { font-size: 15.5px; font-weight: 700; margin-bottom: 10px; color: var(--text-light); }
.scene-card p { color: var(--text-sub-light); font-size: 12.5px; line-height: 1.8; }

/* Service Strip - dark navy accent bar */
.service-strip { padding: 44px 0; background: var(--dark-bg); color: #fff; }
.strip-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.strip-item .icon { font-size: 26px; color: var(--primary-2); margin-bottom: 8px; }
.strip-item b { display: block; font-size: 15px; margin-bottom: 3px; color: #fff; }
.strip-item small { color: var(--text-dim-dark); font-size: 12px; }

/* CTA - dark navy */
.cta { text-align: center; padding: 90px 20px; position: relative; overflow: hidden; color: #fff;
    background:
            radial-gradient(ellipse at 30% 50%, rgba(66,81,182,0.22), transparent 45%),
            radial-gradient(ellipse at 70% 50%, rgba(245,166,35,0.08), transparent 45%),
            var(--dark-bg);
}
.cta h2 { font-size: 32px; font-weight: 700; margin-bottom: 14px; }
.cta h2 em { color: var(--primary-2); font-style: normal; }
.cta p { color: var(--text-sub-dark); font-size: 14.5px; margin-bottom: 30px; }
.cta-info { display: flex; justify-content: center; gap: 56px; margin-top: 36px; flex-wrap: wrap; }
.cta-info small { display: block; color: var(--text-dim-dark); font-size: 12px; margin-bottom: 4px; }
.cta-info b { font-size: 18px; color: #fff; }

/* Footer - deepest navy */
footer { background: var(--dark-header); color: var(--text-sub-dark); padding: 40px 0 20px; font-size: 12.5px; border-top: 1px solid rgba(255,255,255,0.05); }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 20px; }
.footer-brand b { color: #fff; font-size: 15px; }
.footer-brand p { margin-top: 8px; max-width: 320px; line-height: 1.9; color: var(--text-dim-dark); }
.footer-links { display: flex; gap: 40px; }
.footer-links dt { color: #fff; font-size: 13px; font-weight: 600; margin-bottom: 12px; }
.footer-links dd { margin: 0 0 8px; }
.footer-links dd a { color: var(--text-dim-dark); }
.footer-links dd a:hover { color: var(--primary-2); }
.footer-copy { border-top: 1px solid rgba(255,255,255,0.05); margin-top: 26px; padding-top: 16px; text-align: center; color: var(--text-dim-dark); }

@media (max-width: 1024px) {
    .gpu-grid { grid-template-columns: 1fr; }
    .scene-grid { grid-template-columns: repeat(2, 1fr); }
    .strip-inner { grid-template-columns: repeat(2, 1fr); }
    .hero h1 { font-size: 32px; }
}
@media (max-width: 768px) {
    nav { display: none; }
    .hero h1 { font-size: 26px; }
    .sec-head h2 { font-size: 26px; }
    .scene-grid { grid-template-columns: 1fr; }
    .footer-links { flex-direction: column; gap: 16px; }
}