/* ============================================================
   contact-us.css — 联系我们 落地页专用样式（cu- 命名空间）
   浅色科技商务风(qibo式)：白/#f5f9ff 交替分区 + 白卡轻阴影 +
   var(--accent) 强调；仅 Hero 深蓝压阵。骨架类(btn/wrap/section/
   sec-head/eyebrow/form/field/inquiry-panel/cta-banner/faq-list/
   cards/grid-3/anchor-row)复用 site.css，不在此重复定义。
   ============================================================ */

/* ---------- Hero：深蓝压阵 + 左文右联系卡 ---------- */
.cu-hero {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    background:
        radial-gradient(1200px 520px at 82% -10%, rgba(37, 99, 235, .38), transparent 60%),
        radial-gradient(900px 480px at 6% 120%, rgba(38, 192, 160, .20), transparent 60%),
        linear-gradient(160deg, #10203a 0%, #16202e 55%, #0f1a2b 100%);
    color: #fff;
}
.cu-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image:
        linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
    background-size: 46px 46px;
    mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 78%);
    -webkit-mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 78%);
}
.cu-hero-grid {
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    gap: 3rem;
    align-items: center;
    padding: 5.2rem 0 4.6rem;
}
.cu-hero-eyebrow {
    display: inline-block;
    font-size: .74rem;
    font-weight: 700;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: #7fb2ff;
    margin-bottom: 1rem;
    padding: .34rem .9rem;
    border: 1px solid rgba(127, 178, 255, .35);
    border-radius: 999px;
    background: rgba(37, 99, 235, .14);
}
.cu-hero-title {
    font-size: clamp(2rem, 4.4vw, 3.1rem);
    font-weight: 800;
    line-height: 1.16;
    margin: 0 0 1rem;
    color: #fff;
}
.cu-hero-title .accent { color: #59a5ff; }
.cu-hero-sub {
    color: rgba(226, 234, 245, .82);
    font-size: 1.06rem;
    max-width: 34rem;
    margin: 0 0 1.8rem;
}
.cu-hero-points {
    list-style: none;
    margin: 0 0 2rem;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: .6rem 1.4rem;
}
.cu-hero-points li {
    position: relative;
    padding-left: 1.5rem;
    font-size: .94rem;
    color: rgba(226, 234, 245, .9);
}
.cu-hero-points li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    top: 0;
    color: #26c0a0;
    font-weight: 700;
}
.cu-hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.cu-hero .btn-ghost {
    border-color: rgba(255, 255, 255, .28);
    color: #fff;
}
.cu-hero .btn-ghost:hover {
    border-color: rgba(255, 255, 255, .6);
    background: rgba(255, 255, 255, .08);
}

/* Hero 右侧：微信二维码 + 热线速览卡 */
.cu-hero-card {
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .16);
    border-radius: 16px;
    padding: 1.6rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 24px 60px rgba(0, 0, 0, .32);
}
.cu-hero-card h3 {
    color: #fff;
    font-size: 1.02rem;
    margin: 0 0 .3rem;
}
.cu-hero-card .cu-hc-tip {
    color: rgba(226, 234, 245, .72);
    font-size: .82rem;
    margin: 0 0 1.1rem;
}
.cu-qr {
    background: #fff;
    border-radius: 12px;
    padding: .7rem;
    width: 176px;
    margin: 0 auto 1.1rem;
}
.cu-qr img { width: 100%; height: auto; border-radius: 6px; }
.cu-qr-cap {
    text-align: center;
    font-size: .78rem;
    color: rgba(226, 234, 245, .72);
    margin: -.5rem 0 1.1rem;
}
.cu-hotline {
    display: flex;
    align-items: center;
    gap: .8rem;
    padding: .7rem .8rem;
    border-radius: 10px;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .1);
    text-decoration: none;
    transition: background .2s ease, border-color .2s ease;
}
.cu-hotline + .cu-hotline { margin-top: .6rem; }
.cu-hotline:hover { background: rgba(255, 255, 255, .1); border-color: rgba(127, 178, 255, .5); }
.cu-hotline .hl-ico {
    width: 34px; height: 34px; flex-shrink: 0;
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(37, 99, 235, .28); color: #9cc4ff; font-size: 1rem;
}
.cu-hotline .hl-k { font-size: .72rem; color: rgba(226, 234, 245, .66); letter-spacing: .04em; }
.cu-hotline .hl-v { font-size: .98rem; font-weight: 700; color: #fff; }

/* ---------- 快捷联系带（4 联） ---------- */
.cu-quickbar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.2rem;
}
.cu-quick {
    display: flex;
    align-items: flex-start;
    gap: .9rem;
    padding: 1.3rem 1.4rem;
    background: var(--ink-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}
.cu-quick .q-ico {
    width: 42px; height: 42px; flex-shrink: 0;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    background: var(--accent-dim); color: var(--accent); font-size: 1.2rem;
}
.cu-quick .q-k {
    font-size: .74rem; font-weight: 700; letter-spacing: .1em;
    text-transform: uppercase; color: var(--muted); margin-bottom: .25rem;
}
.cu-quick .q-v { font-size: .98rem; font-weight: 600; color: var(--paper); line-height: 1.5; }
.cu-quick .q-v a { color: var(--accent); text-decoration: none; }
.cu-quick .q-v a:hover { text-decoration: underline; }

/* ---------- 商务顾问团队 ---------- */
.cu-team {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.4rem;
}
.cu-advisor {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.8rem;
    background: var(--ink-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}
.cu-advisor::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent 72%);
}
.cu-advisor-top { display: flex; align-items: center; gap: 1rem; }
.cu-avatar {
    width: 56px; height: 56px; flex-shrink: 0;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem; font-weight: 800; color: #fff;
    background: linear-gradient(135deg, var(--accent), #26c0a0);
}
.cu-advisor-name { font-size: 1.16rem; font-weight: 700; margin: 0; }
.cu-advisor-role { font-size: .84rem; color: var(--muted); margin: .15rem 0 0; }
.cu-advisor-desc { font-size: .92rem; color: var(--paper-soft); line-height: 1.65; margin: 0; }
.cu-advisor-rows { display: flex; flex-direction: column; gap: .55rem; margin-top: .2rem; }
.cu-advisor-row {
    display: flex; align-items: center; gap: .55rem;
    padding: .7rem .9rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--ink-3);
    font-size: .92rem; color: var(--paper);
    text-decoration: none;
    transition: border-color .2s ease;
}
.cu-advisor-row:hover { border-color: var(--accent); }
.cu-advisor-row .ar-ico { color: var(--accent); font-size: 1rem; flex-shrink: 0; }
.cu-advisor-row .ar-k {
    color: var(--muted); font-size: .78rem; margin-right: auto;
    min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cu-advisor-row .ar-v { font-weight: 700; letter-spacing: .01em; white-space: nowrap; flex-shrink: 0; }
.cu-advisor-tags { display: flex; flex-wrap: wrap; gap: .45rem; margin-top: .3rem; }
.cu-advisor-tags span {
    font-size: .76rem; color: var(--paper-soft);
    padding: .28rem .7rem; border-radius: 999px;
    border: 1px solid var(--line-strong); background: var(--surface-alt);
}

/* ---------- 合作流程 ---------- */
.cu-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.2rem;
    counter-reset: cu-step;
}
.cu-step {
    position: relative;
    padding: 1.6rem 1.4rem;
    background: var(--ink-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}
.cu-step-no {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: 10px;
    background: var(--accent-dim); color: var(--accent);
    font-weight: 800; font-size: 1.05rem; margin-bottom: .9rem;
}
.cu-step h3 { font-size: 1.04rem; margin: 0 0 .4rem; }
.cu-step p { font-size: .88rem; color: var(--muted); line-height: 1.6; margin: 0; }

/* ---------- 咨询表单区 band（自包含，不依赖 home.css 的 cta-grid） ---------- */
.cu-cta {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 2.5rem;
    align-items: start;
    background: linear-gradient(115deg, var(--ink-2) 55%, var(--accent-dim));
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    padding: 2.6rem;
    box-shadow: var(--shadow-sm);
}
.cu-cta h2 { font-size: 1.5rem; margin-bottom: .3rem; }
.cu-cta-info {
    list-style: none; margin: 1.6rem 0 0; padding: 0;
    display: flex; flex-direction: column; gap: .75rem;
}
.cu-cta-info li {
    display: flex; gap: .65rem; align-items: flex-start;
    font-size: .92rem; color: var(--paper-soft); line-height: 1.55;
}
.cu-cta-info li .ci-ico { color: var(--accent); flex-shrink: 0; font-size: 1rem; line-height: 1.5; }
.cu-cta-info li b { color: var(--paper); font-weight: 600; }

/* ---------- 咨询表单两列 ---------- */
.cu-form-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.cu-form-note {
    display: flex; gap: .7rem; align-items: flex-start;
    color: var(--muted); font-size: .82rem; margin: .4rem 0 0;
}
.cu-form-note b { color: var(--accent); }

/* 表单区左侧：服务承诺清单 */
.cu-promise { list-style: none; margin: 1.4rem 0 0; padding: 0; display: flex; flex-direction: column; gap: .9rem; }
.cu-promise li { position: relative; padding-left: 1.7rem; color: var(--paper-soft); font-size: .95rem; line-height: 1.6; }
.cu-promise li::before {
    content: "\2713"; position: absolute; left: 0; top: 0;
    width: 20px; height: 20px; border-radius: 50%;
    background: var(--accent-dim); color: var(--accent);
    font-size: .74rem; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
}
.cu-promise li b { color: var(--paper); }

/* ---------- 解决方案入口 ---------- */
.cu-sol-card .cu-sol-body { padding: 1.3rem 1.4rem; display: flex; flex-direction: column; gap: .6rem; }
.cu-sol-card h3 { font-size: 1.06rem; margin: 0; }
.cu-sol-card p { font-size: .88rem; color: var(--muted); line-height: 1.6; margin: 0; }
.cu-sol-card .cu-sol-go { margin-top: .3rem; font-size: .86rem; color: var(--accent); font-weight: 600; }
.cu-sol-ico {
    width: 46px; height: 46px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    background: var(--accent-dim); color: var(--accent); font-size: 1.35rem;
}

/* ---------- 响应式塌缩 ---------- */
@media (max-width: 1024px) {
    .cu-hero-grid { grid-template-columns: 1fr; gap: 2.4rem; padding: 4rem 0; }
    .cu-hero-card { max-width: 420px; }
    .cu-quickbar { grid-template-columns: 1fr 1fr; }
    .cu-steps { grid-template-columns: 1fr 1fr; }
    .cu-team { grid-template-columns: 1fr; }
    .cu-cta { grid-template-columns: 1fr; gap: 2rem; padding: 2rem; }
}
@media (max-width: 900px) {
    .cu-team { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .cu-quickbar { grid-template-columns: 1fr; }
    .cu-steps { grid-template-columns: 1fr; }
    .cu-form-2col { grid-template-columns: 1fr; }
    .cu-cta { padding: 1.5rem; }
    .cu-hero-actions .btn { width: 100%; justify-content: center; }
}