/* ============================================================
   鼎驰云 商业视觉层 v1
   独立文件，只覆盖首页/产品卡/页脚，不动后台与其它页面
   ============================================================ */

:root {
    --dc-navy: #0F2B57;
    --dc-navy-2: #123A72;
    --dc-blue: #2E8BFF;
    --dc-blue-deep: #1450C4;
    --dc-amber: #FFB020;
    --dc-ink: #0B1B33;
    --dc-line: #E3EBF5;
    --dc-grid: rgba(255, 255, 255, 0.06);
}

/* ---------- 品牌标识 ---------- */
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .5px; }
.logo .logo-icon {
    width: 34px; height: 34px; border-radius: 9px;
    background: var(--dc-navy);
    display: inline-flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 12px rgba(15, 43, 87, .22);
    flex: 0 0 auto;
}
.logo .logo-icon svg { width: 22px; height: 22px; display: block; }
.logo .logo-text { display: flex; flex-direction: column; line-height: 1.05; }
.logo .logo-cn { font-size: 18px; color: var(--dc-ink); }
.logo .logo-en { font-size: 9px; letter-spacing: 2.2px; color: var(--gray-light); font-weight: 600; }

/* ---------- 首屏 ---------- */
.dc-hero {
    position: relative;
    background:
        radial-gradient(1100px 520px at 78% -10%, rgba(46, 139, 255, .38), transparent 62%),
        radial-gradient(700px 420px at 8% 110%, rgba(20, 80, 196, .30), transparent 60%),
        linear-gradient(160deg, #0B1F3F 0%, #0F2B57 48%, #103764 100%);
    color: #fff;
    overflow: hidden;
    padding: 76px 0 84px;
}
/* 网格底纹，增强"机房/网络"质感 */
.dc-hero::before {
    content: '';
    position: absolute; inset: 0;
    background-image:
        linear-gradient(var(--dc-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--dc-grid) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(circle at 50% 40%, #000 35%, transparent 78%);
    -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 35%, transparent 78%);
    pointer-events: none;
}
.dc-hero > .container { position: relative; z-index: 2; }
.dc-hero .dc-hero-inner {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 48px;
    align-items: center;
}
.dc-hero h1 {
    font-size: 46px;
    line-height: 1.16;
    font-weight: 800;
    letter-spacing: -.5px;
    margin-bottom: 18px;
    color: #fff;
}
.dc-hero h1 em {
    font-style: normal;
    background: linear-gradient(100deg, #7CC0FF, #2E8BFF 55%, #FFB020);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.dc-hero .dc-sub {
    font-size: 16px;
    line-height: 1.85;
    color: rgba(255, 255, 255, .72);
    max-width: 520px;
    margin-bottom: 30px;
}
.dc-hero .dc-hero-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.dc-btn-light {
    background: #fff; color: var(--dc-navy) !important;
    padding: 14px 30px; border-radius: 10px; font-weight: 700; font-size: 15px;
    box-shadow: 0 10px 26px rgba(0, 0, 0, .22);
    transition: transform .18s, box-shadow .18s;
    display: inline-block;
}
.dc-btn-light:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(0, 0, 0, .3); }
.dc-btn-ghost {
    background: rgba(255, 255, 255, .06); color: #fff !important;
    border: 1px solid rgba(255, 255, 255, .26);
    padding: 14px 28px; border-radius: 10px; font-weight: 600; font-size: 15px;
    transition: background .18s, border-color .18s;
    display: inline-block;
}
.dc-btn-ghost:hover { background: rgba(255, 255, 255, .13); border-color: rgba(255, 255, 255, .48); }

/* 首屏指标 */
.dc-hero-stats { display: flex; gap: 0; border-top: 1px solid rgba(255, 255, 255, .14); padding-top: 24px; }
.dc-hero-stat { padding-right: 30px; margin-right: 30px; border-right: 1px solid rgba(255, 255, 255, .12); }
.dc-hero-stat:last-child { border-right: none; margin-right: 0; padding-right: 0; }
.dc-hero-stat strong { display: block; font-size: 26px; font-weight: 800; color: #fff; line-height: 1.2; }
.dc-hero-stat span { font-size: 12.5px; color: rgba(255, 255, 255, .6); letter-spacing: .3px; }

/* 首屏右侧：节点可视化 */
.dc-hero-visual { position: relative; }
.dc-hero-visual svg { width: 100%; height: auto; display: block; }
.dc-pulse { animation: dcPulse 3.2s ease-in-out infinite; transform-origin: center; }
.dc-pulse-2 { animation-delay: 1.1s; }
.dc-pulse-3 { animation-delay: 2.1s; }
@keyframes dcPulse {
    0%, 100% { opacity: .35; r: 4; }
    50%      { opacity: 1;   r: 5.4; }
}
@media (prefers-reduced-motion: reduce) {
    .dc-pulse { animation: none; }
}

/* ---------- 支付能力条 ---------- */
.dc-paybar {
    background: var(--dc-navy);
    border-top: 1px solid rgba(255, 255, 255, .08);
}
.dc-paybar .container {
    display: flex; align-items: center; gap: 22px;
    padding: 15px 20px; flex-wrap: wrap;
}
.dc-paybar .dc-paybar-label {
    font-size: 12px; letter-spacing: 1.6px; text-transform: uppercase;
    color: rgba(255, 255, 255, .45); font-weight: 700;
}
.dc-paybar .dc-pay-item {
    display: inline-flex; align-items: center; gap: 8px;
    color: rgba(255, 255, 255, .88); font-size: 13.5px; font-weight: 600;
}
.dc-paybar .dc-pay-item b { color: var(--dc-amber); font-weight: 800; }
.dc-paybar .dc-dot {
    width: 7px; height: 7px; border-radius: 50%; background: #2ECC71;
    box-shadow: 0 0 0 3px rgba(46, 204, 113, .18);
}

/* ---------- 自助流程（4 步）---------- */
.dc-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 44px; }
.dc-step { position: relative; padding: 0 26px 0 0; }
.dc-step:last-child { padding-right: 0; }
.dc-step .dc-step-no {
    width: 40px; height: 40px; border-radius: 11px;
    background: var(--primary-light); color: var(--dc-blue-deep);
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 15px; margin-bottom: 16px;
}
.dc-step h4 { font-size: 15.5px; color: var(--dc-ink); margin-bottom: 7px; }
.dc-step p { font-size: 13.5px; color: var(--gray); line-height: 1.75; }
.dc-step::after {
    content: ''; position: absolute; top: 20px; right: 6px;
    width: calc(100% - 52px); height: 1px;
    background: linear-gradient(90deg, var(--dc-line), transparent);
}
.dc-step:last-child::after { display: none; }

/* ---------- 产品卡片 v2 ---------- */
.dc-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(285px, 1fr));
    gap: 22px;
    margin-top: 40px;
}
.dc-card {
    background: #fff;
    border: 1px solid var(--dc-line);
    border-radius: 14px;
    padding: 24px 22px 20px;
    display: flex; flex-direction: column;
    transition: transform .22s, box-shadow .22s, border-color .22s;
    position: relative;
    overflow: hidden;
}
.dc-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--dc-blue), var(--dc-blue-deep));
    opacity: 0; transition: opacity .22s;
}
.dc-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(15, 43, 87, .13);
    border-color: #C9DBF2;
}
.dc-card:hover::before { opacity: 1; }
.dc-card.is-hot { border-color: #FFD98A; background: linear-gradient(180deg, #FFFCF4, #fff 42%); }
.dc-card.is-hot::before { opacity: 1; background: linear-gradient(90deg, var(--dc-amber), #FF8A00); }

.dc-card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; margin-bottom: 4px; }
.dc-card-region {
    font-size: 11.5px; font-weight: 700; letter-spacing: .6px;
    color: var(--dc-blue-deep); background: var(--primary-light);
    padding: 3px 9px; border-radius: 5px;
}
.dc-card-hot {
    font-size: 11px; font-weight: 700; color: #8A5A00;
    background: #FFF0CC; border: 1px solid #FFD98A;
    padding: 3px 9px; border-radius: 5px;
}
.dc-card h3 {
    font-size: 17px; font-weight: 700; color: var(--dc-ink);
    line-height: 1.4; margin: 10px 0 14px;
}
.dc-card-price {
    display: flex; align-items: baseline; gap: 5px;
    padding-bottom: 16px; margin-bottom: 16px;
    border-bottom: 1px dashed var(--dc-line);
}
.dc-card-price .amt { font-size: 30px; font-weight: 800; color: var(--dc-navy); letter-spacing: -.5px; line-height: 1; }
.dc-card-price .cur { font-size: 15px; font-weight: 700; color: var(--dc-navy); }
.dc-card-price .unit { font-size: 12.5px; color: var(--gray-light); }

.dc-card-specs { list-style: none; margin-bottom: 18px; flex: 1; }
.dc-card-specs li {
    display: flex; align-items: flex-start; justify-content: space-between;
    gap: 12px; font-size: 13px; padding: 5px 0;
}
.dc-card-specs .k { color: var(--gray-light); flex: 0 0 auto; }
.dc-card-specs .v { color: var(--dark); font-weight: 600; text-align: right; }
.dc-card-specs .v.accent { color: var(--dc-blue-deep); }

.dc-card-foot { display: flex; gap: 10px; }
.dc-card-foot .btn { flex: 1; width: auto; }

/* ---------- 页脚 v2 ---------- */
.footer { background: var(--dc-navy); color: rgba(255, 255, 255, .72); }
.footer .logo .logo-cn { color: #fff; }
.footer .logo .logo-en { color: rgba(255, 255, 255, .42); }
.footer h3 { color: #fff; }
.footer a { color: rgba(255, 255, 255, .68); }
.footer a:hover { color: #fff; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    color: rgba(255, 255, 255, .45);
}

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
    .dc-hero { padding: 52px 0 58px; }
    .dc-hero .dc-hero-inner { grid-template-columns: 1fr; gap: 34px; }
    .dc-hero h1 { font-size: 34px; }
    .dc-hero-visual { max-width: 460px; margin: 0 auto; }
    .dc-steps { grid-template-columns: 1fr 1fr; gap: 26px 20px; }
    .dc-step::after { display: none; }
}
@media (max-width: 620px) {
    .dc-hero h1 { font-size: 27px; }
    .dc-hero .dc-sub { font-size: 14.5px; }
    .dc-hero-stats { flex-wrap: wrap; gap: 18px 0; }
    .dc-hero-stat { padding-right: 20px; margin-right: 20px; }
    .dc-steps { grid-template-columns: 1fr; gap: 22px; }
    .dc-card-grid { grid-template-columns: 1fr; }
    .dc-card-price .amt { font-size: 26px; }
    .dc-paybar .container { gap: 12px; }
}

/* ---------- 流程 / 数据 分列区块 ---------- */
.dc-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
    margin-top: 40px;
}
.dc-split-card {
    background: #fff;
    border: 1px solid var(--dc-line);
    border-radius: 14px;
    padding: 30px 28px 26px;
    display: flex;
    flex-direction: column;
}
.dc-split-card-dark {
    background: linear-gradient(160deg, #0F2B57, #123A72);
    border-color: transparent;
    color: rgba(255, 255, 255, .8);
    box-shadow: 0 14px 36px rgba(15, 43, 87, .2);
}
.dc-split-head { margin-bottom: 20px; }
.dc-split-tag {
    display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: 1.6px;
    padding: 3px 10px; border-radius: 5px;
    background: var(--primary-light); color: var(--dc-blue-deep); margin-bottom: 12px;
}
.dc-split-tag-amber { background: rgba(255, 176, 32, .16); color: var(--dc-amber); }
.dc-split-head h3 { font-size: 19px; color: var(--dc-ink); }
.dc-split-card-dark .dc-split-head h3 { color: #fff; }
.dc-split-list { list-style: none; flex: 1; margin-bottom: 22px; }
.dc-split-list li { padding: 13px 0; border-bottom: 1px dashed var(--dc-line); }
.dc-split-card-dark .dc-split-list li { border-bottom-color: rgba(255, 255, 255, .12); }
.dc-split-list li:last-child { border-bottom: none; }
.dc-split-list strong {
    display: block; font-size: 14.5px; color: var(--dc-ink); margin-bottom: 4px;
}
.dc-split-card-dark .dc-split-list strong { color: #fff; }
.dc-split-list span { font-size: 13px; line-height: 1.75; color: var(--gray); }
.dc-split-card-dark .dc-split-list span { color: rgba(255, 255, 255, .66); }
.dc-split-link { font-size: 13.5px; font-weight: 700; color: var(--dc-blue-deep); }
.dc-split-card-dark .dc-split-link:hover { color: #fff; }

@media (max-width: 860px) {
    .dc-split { grid-template-columns: 1fr; }
}

/* ============================================================
   v2 商务强化层
   ============================================================ */

/* ---------- 首屏 kicker ---------- */
.dc-hero-kicker {
    display: inline-flex; align-items: center; gap: 9px;
    font-size: 12.5px; letter-spacing: .6px; font-weight: 600;
    color: rgba(255, 255, 255, .72);
    background: rgba(255, 255, 255, .07);
    border: 1px solid rgba(255, 255, 255, .14);
    padding: 7px 15px; border-radius: 100px; margin-bottom: 26px;
}
.dc-kicker-dot {
    width: 6px; height: 6px; border-radius: 50%; background: #2ECC71;
    box-shadow: 0 0 0 3px rgba(46, 204, 113, .16);
    flex: 0 0 auto;
}

/* ---------- 三个零 ---------- */
.dc-zeros {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 1px; background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 12px; overflow: hidden;
    margin-bottom: 32px; max-width: 560px;
}
.dc-zero {
    background: rgba(10, 26, 51, .55);
    padding: 20px 18px 18px; text-align: center;
}
.dc-zero strong {
    display: block; font-size: 38px; font-weight: 800; line-height: 1;
    color: #FFB020; letter-spacing: -1px; margin-bottom: 8px;
    font-variant-numeric: tabular-nums;
}
.dc-zero span {
    font-size: 12px; color: rgba(255, 255, 255, .66); letter-spacing: .3px;
    line-height: 1.5; display: block;
}

/* ---------- 公告条 ---------- */
.dc-notice-bar {
    display: flex; align-items: center; gap: 16px;
    border: 1px solid var(--dc-line); border-radius: 10px;
    padding: 13px 20px; background: #FBFCFE;
}
.dc-notice-label {
    flex: 0 0 auto; font-size: 11.5px; font-weight: 800; letter-spacing: 1.4px;
    color: var(--dc-blue-deep); background: var(--primary-light);
    padding: 3px 9px; border-radius: 5px;
}
.dc-notice-list { flex: 1; display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.dc-notice-item {
    display: flex; align-items: center; gap: 9px; font-size: 13.5px;
    color: var(--dark); min-width: 0;
}
.dc-notice-item:hover .dc-notice-title { color: var(--primary); }
.dc-notice-pin {
    font-size: 10.5px; font-weight: 700; color: #8A5A00;
    background: #FFF0CC; padding: 1px 6px; border-radius: 4px; flex: 0 0 auto;
}
.dc-notice-title { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dc-notice-date { font-size: 12px; color: var(--gray-light); flex: 0 0 auto; font-variant-numeric: tabular-nums; }
.dc-notice-more { flex: 0 0 auto; font-size: 13px; color: var(--gray); }
.dc-notice-more:hover { color: var(--primary); }

/* ---------- 能力矩阵表 ---------- */
.dc-matrix {
    margin-top: 38px; border: 1px solid var(--dc-line);
    border-radius: 14px; overflow: hidden; background: #fff;
}
.dc-matrix-row {
    display: grid; grid-template-columns: 1.1fr 1.1fr 1.2fr 1.3fr;
    border-bottom: 1px solid var(--dc-line);
}
.dc-matrix-row:last-child { border-bottom: none; }
.dc-matrix-row:nth-child(even) { background: #FBFCFE; }
.dc-matrix-cell {
    padding: 16px 20px; font-size: 13.5px; color: var(--gray);
    display: flex; align-items: center; gap: 8px;
    border-right: 1px solid var(--dc-line);
}
.dc-matrix-cell:last-child { border-right: none; }
.dc-matrix-head {
    background: linear-gradient(180deg, #0F2B57, #123A72) !important;
}
.dc-matrix-head .dc-matrix-cell {
    color: rgba(255, 255, 255, .8); font-size: 12px;
    font-weight: 700; letter-spacing: .8px; text-transform: uppercase;
}
.dc-matrix-label strong { color: var(--dc-ink); font-size: 14px; }
.dc-matrix-head .dc-matrix-label { color: rgba(255, 255, 255, .8); }

.dc-chip {
    display: inline-block; font-size: 12px; font-weight: 700;
    padding: 3px 10px; border-radius: 5px; letter-spacing: .2px;
}
.dc-chip-blue  { background: var(--primary-light); color: var(--dc-blue-deep); }
.dc-chip-amber { background: #FFF0CC; color: #8A5A00; }
.dc-chip-plain { background: #F1F5F9; color: var(--gray); }

.dc-matrix-foot {
    margin-top: 16px; font-size: 13px; color: var(--gray-light); text-align: center;
}
.dc-matrix-foot a { font-weight: 700; }

/* ---------- 节点网格 ---------- */
.dc-netgrid {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 18px; margin-top: 38px;
}
.dc-netcard {
    background: #fff; border: 1px solid var(--dc-line);
    border-radius: 13px; padding: 22px 20px 18px;
    transition: transform .2s, box-shadow .2s, border-color .2s;
}
.dc-netcard:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 32px rgba(15, 43, 87, .1);
    border-color: #C9DBF2;
}
.dc-netcard-top {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 16px;
}
.dc-netcard-code {
    font-size: 11px; font-weight: 800; letter-spacing: 2px;
    color: var(--dc-blue-deep);
}
.dc-netcard-flag {
    font-size: 12.5px; font-weight: 700; color: var(--dc-ink);
}
.dc-netcard-metric {
    display: flex; align-items: baseline; gap: 7px;
    padding-bottom: 13px; margin-bottom: 13px;
    border-bottom: 1px dashed var(--dc-line);
}
.dc-netcard-metric strong {
    font-size: 21px; font-weight: 800; color: var(--dc-navy); letter-spacing: -.4px;
}
.dc-netcard-metric span { font-size: 12px; color: var(--gray-light); }
.dc-netcard-desc { font-size: 13px; color: var(--gray); line-height: 1.75; margin-bottom: 14px; min-height: 44px; }
.dc-netcard-count {
    font-size: 12px; font-weight: 700; color: var(--dc-blue-deep);
    background: var(--primary-light); display: inline-block;
    padding: 3px 10px; border-radius: 5px;
}

/* ---------- 网络指标条 ---------- */
.dc-netbar {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 1px; background: var(--dc-line);
    border: 1px solid var(--dc-line); border-radius: 12px;
    overflow: hidden; margin-top: 26px;
}
.dc-netbar-item { background: #fff; padding: 22px 20px; text-align: center; }
.dc-netbar-item strong {
    display: block; font-size: 26px; font-weight: 800;
    color: var(--dc-navy); line-height: 1.2; margin-bottom: 5px;
    font-variant-numeric: tabular-nums;
}
.dc-netbar-item span { font-size: 12.5px; color: var(--gray-light); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .dc-netgrid { grid-template-columns: repeat(2, 1fr); }
    .dc-matrix-row { grid-template-columns: 1fr 1fr; }
    .dc-matrix-head .dc-matrix-cell:nth-child(3),
    .dc-matrix-head .dc-matrix-cell:nth-child(4) { display: none; }
    .dc-matrix-row:not(.dc-matrix-head) .dc-matrix-cell:nth-child(3) { display: none; }
}
@media (max-width: 720px) {
    .dc-zeros { max-width: 100%; }
    .dc-zero strong { font-size: 30px; }
    .dc-netgrid { grid-template-columns: 1fr; }
    .dc-netbar { grid-template-columns: 1fr 1fr; }
    .dc-matrix-row { grid-template-columns: 1fr; }
    .dc-matrix-cell { border-right: none; border-bottom: 1px solid var(--dc-line); }
    .dc-matrix-cell:last-child { border-bottom: none; }
    .dc-matrix-head { display: none; }
    .dc-notice-bar { flex-wrap: wrap; }
    .dc-notice-list { flex-basis: 100%; }
}