/* ==========================================================================
   企业级厚重设计层（Enterprise Gravitas）
   实底 · 密排 · 摄影 · 单一品牌色纪律 · 数据化
   ========================================================================== */

:root {
    --ent-ink: #0A1628;        /* 主文字：近黑海军蓝 */
    --ent-ink-2: #334155;      /* 次级文字 */
    --ent-ink-3: #64748B;      /* 辅助文字 */
    --ent-navy: #0A2540;       /* 品牌深色：实色块 */
    --ent-navy-2: #123A5E;     /* 深色块层次 */
    --ent-paper: #FFFFFF;      /* 主底色 */
    --ent-paper-2: #F5F7FA;    /* 交替底色 */
    --ent-line: #DDE3EA;       /* 分隔线 */
    --ent-gold: #B08D4F;       /* 唯一点缀色：香槟金 */
    --ent-gold-soft: #C9A96E;
}

/* ---- 基础排版 ---- */
.ent-zone { background: var(--ent-paper); color: var(--ent-ink); }
.ent-display {
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1.06;
    color: var(--ent-ink);
}
.ent-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ent-gold);
    margin-bottom: 1.25rem;
}
.ent-eyebrow::before {
    content: '';
    width: 28px;
    height: 2px;
    background: var(--ent-gold);
}
.ent-eyebrow-no { color: var(--ent-ink-3); font-variant-numeric: tabular-nums; }
.ent-lead {
    font-size: clamp(1.0625rem, 1.4vw, 1.25rem);
    line-height: 1.85;
    color: var(--ent-ink-2);
    max-width: 44rem;
}
.ent-rule { height: 1px; background: var(--ent-line); border: 0; margin: 0; }

/* ---- Hero：全幅摄影 + 实色压字 ---- */
.ent-hero {
    position: relative;
    min-height: 92svh;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
    background: var(--ent-navy);
}
.ent-hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center 30%;
    transform: scale(1.04);
    animation: entHeroZoom 18s ease-out forwards;
}
@keyframes entHeroZoom {
    to { transform: scale(1); }
}
.ent-hero-veil {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(10, 37, 64, 0.55) 0%, rgba(10, 37, 64, 0.78) 55%, rgba(10, 22, 40, 0.94) 100%),
        linear-gradient(90deg, rgba(10, 37, 64, 0.72) 0%, rgba(10, 37, 64, 0.35) 60%, transparent 100%);
}
.ent-hero-inner {
    position: relative;
    z-index: 2;
    width: 100%;
    padding: 8rem 0 0;
}
.ent-hero-title {
    font-size: clamp(2.5rem, 6.2vw, 5.25rem);
    font-weight: 900;
    letter-spacing: -0.035em;
    line-height: 1.04;
    color: #fff;
    max-width: 60rem;
    margin-bottom: 1.75rem;
    text-wrap: balance;
}
.ent-hero-title em {
    font-style: normal;
    color: var(--ent-gold-soft);
}
.ent-hero-sub {
    font-size: clamp(1rem, 1.35vw, 1.1875rem);
    line-height: 1.85;
    color: rgba(226, 232, 240, 0.82);
    max-width: 38rem;
    margin-bottom: 2.5rem;
}
.ent-hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; }
.ent-btn-solid {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2.25rem;
    background: var(--ent-gold);
    color: #1a1408;
    font-weight: 700;
    font-size: 1rem;
    border: 0;
    transition: background 0.25s ease, transform 0.25s ease;
}
.ent-btn-solid:hover { background: var(--ent-gold-soft); transform: translateY(-2px); }
.ent-btn-line {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: transparent;
    color: #fff;
    font-weight: 600;
    font-size: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.35);
    transition: border-color 0.25s ease, background 0.25s ease;
}
.ent-btn-line:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }

/* Hero 底部能力条（密度信号） */
.ent-hero-strip {
    position: relative;
    z-index: 2;
    margin-top: 4.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}
.ent-hero-strip-item {
    padding: 1.5rem 1.75rem 1.75rem;
    border-right: 1px solid rgba(255, 255, 255, 0.14);
}
.ent-hero-strip-item:last-child { border-right: 0; }
.ent-hero-strip-no {
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: var(--ent-gold-soft);
    margin-bottom: 0.5rem;
}
.ent-hero-strip-title { font-size: 1.0625rem; font-weight: 700; color: #fff; margin-bottom: 0.25rem; }
.ent-hero-strip-desc { font-size: 0.8125rem; line-height: 1.7; color: rgba(203, 213, 225, 0.65); }

/* ---- 能力带（白底密排四列）---- */
.ent-capability { padding: 5.5rem 0; }
.ent-capability-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 2px solid var(--ent-ink);
}
.ent-capability-col {
    padding: 2.25rem 1.75rem 2.5rem;
    border-right: 1px solid var(--ent-line);
}
.ent-capability-col:last-child { border-right: 0; }
.ent-capability-no {
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    color: var(--ent-line);
    line-height: 1;
    margin-bottom: 1.25rem;
    font-variant-numeric: tabular-nums;
}
.ent-capability-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--ent-ink);
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}
.ent-capability-desc {
    font-size: 0.875rem;
    line-height: 1.8;
    color: var(--ent-ink-3);
    margin-bottom: 1.25rem;
}
.ent-capability-list { list-style: none; padding: 0; margin: 0; }
.ent-capability-list li {
    font-size: 0.8125rem;
    line-height: 1.7;
    color: var(--ent-ink-2);
    padding: 0.5rem 0 0.5rem 1rem;
    border-top: 1px solid var(--ent-line);
    position: relative;
}
.ent-capability-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 1.05rem;
    width: 4px;
    height: 4px;
    background: var(--ent-gold);
}

/* ---- 深色叙事带 ---- */
.ent-arc {
    background: var(--ent-navy);
    color: #fff;
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}
.ent-arc::after {
    content: '';
    position: absolute;
    right: -8%;
    top: -20%;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(176, 141, 79, 0.14), transparent 65%);
    pointer-events: none;
}
.ent-arc .ent-eyebrow { color: var(--ent-gold-soft); }
.ent-arc-title { font-size: clamp(1.875rem, 3.2vw, 2.75rem); font-weight: 900; letter-spacing: -0.03em; color: #fff; margin-bottom: 0.75rem; }
.ent-arc-sub { color: rgba(203, 213, 225, 0.7); margin-bottom: 3.5rem; }
.ent-arc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid rgba(255, 255, 255, 0.16); }
.ent-arc-cell { padding: 2.5rem 2rem 2.5rem 0; border-right: 1px solid rgba(255, 255, 255, 0.16); }
.ent-arc-cell:last-child { border-right: 0; padding-right: 0; }
.ent-arc-cell:not(:first-child) { padding-left: 2rem; }
.ent-arc-no {
    font-size: 3.5rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    color: rgba(255, 255, 255, 0.14);
    line-height: 1;
    margin-bottom: 1.25rem;
    font-variant-numeric: tabular-nums;
}
.ent-arc-stage {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    color: var(--ent-gold-soft);
    border: 1px solid rgba(201, 169, 110, 0.4);
    padding: 0.25rem 0.625rem;
    margin-bottom: 1rem;
}
.ent-arc-name { font-size: 1.5rem; font-weight: 800; color: #fff; margin-bottom: 0.625rem; }
.ent-arc-desc { font-size: 0.9375rem; line-height: 1.85; color: rgba(203, 213, 225, 0.75); margin-bottom: 1.25rem; }
.ent-arc-link { font-size: 0.875rem; font-weight: 600; color: var(--ent-gold-soft); display: inline-flex; align-items: center; gap: 0.375rem; }
.ent-arc-link:hover { gap: 0.625rem; }
.ent-arc-link { transition: gap 0.25s ease; }

/* ---- 服务矩阵（白底 + 1px 网格，非浮动卡）---- */
.ent-matrix { padding: 6rem 0; background: var(--ent-paper); }
.ent-matrix-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    border-top: 2px solid var(--ent-ink);
    border-left: 1px solid var(--ent-line);
}
.ent-matrix-cell {
    padding: 2.5rem;
    border-right: 1px solid var(--ent-line);
    border-bottom: 1px solid var(--ent-line);
    transition: background 0.3s ease;
    display: block;
    text-decoration: none;
    color: inherit;
}
.ent-matrix-cell:hover { background: var(--ent-paper-2); }
.ent-matrix-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 1.5rem; margin-bottom: 1.5rem; }
.ent-matrix-icon {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ent-navy);
    color: #fff;
    font-size: 1.25rem;
    flex-shrink: 0;
}
.ent-matrix-no { font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.18em; color: var(--ent-ink-3); font-variant-numeric: tabular-nums; }
.ent-matrix-title { font-size: 1.375rem; font-weight: 800; color: var(--ent-ink); margin-bottom: 0.875rem; letter-spacing: -0.015em; }
.ent-matrix-rows { display: grid; gap: 0.875rem; }
.ent-matrix-row { display: grid; grid-template-columns: 5.5rem 1fr; gap: 1rem; align-items: start; }
.ent-matrix-label {
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--ent-ink-3);
    padding-top: 0.15rem;
}
.ent-matrix-value { font-size: 0.875rem; line-height: 1.75; color: var(--ent-ink-2); }
.ent-matrix-more {
    margin-top: 1.5rem;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--ent-navy);
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}
.ent-matrix-cell:hover .ent-matrix-more { gap: 0.625rem; color: var(--ent-gold); }
.ent-matrix-more { transition: gap 0.25s ease, color 0.25s ease; }

/* ---- 数据与方法（交替浅底）---- */
.ent-data { padding: 6rem 0; background: var(--ent-paper-2); }
.ent-data-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 4rem; align-items: center; }
.ent-data-figure {
    background: var(--ent-paper);
    border: 1px solid var(--ent-line);
    padding: 2rem 2rem 1.5rem;
}
.ent-data-figure-title {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--ent-ink-3);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}
.ent-data-figure svg { width: 100%; height: auto; display: block; }
.ent-data-figure-note {
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid var(--ent-line);
    font-size: 0.75rem;
    color: var(--ent-ink-3);
    line-height: 1.7;
}
/* 方法四步 */
.ent-steps { display: grid; gap: 0; border-top: 2px solid var(--ent-ink); }
.ent-step {
    display: grid;
    grid-template-columns: 4.5rem 1fr auto;
    gap: 1.5rem;
    align-items: baseline;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--ent-line);
}
.ent-step-no {
    font-size: 1.75rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    color: var(--ent-gold);
    font-variant-numeric: tabular-nums;
}
.ent-step-name { font-size: 1.125rem; font-weight: 800; color: var(--ent-ink); margin-bottom: 0.25rem; }
.ent-step-desc { font-size: 0.875rem; line-height: 1.75; color: var(--ent-ink-2); }
.ent-step-cycle {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--ent-ink-3);
    white-space: nowrap;
    border: 1px solid var(--ent-line);
    padding: 0.25rem 0.625rem;
}

/* ---- 差异化图文 ---- */
.ent-beyond { padding: 6rem 0; background: var(--ent-paper); }
.ent-beyond-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 4rem; align-items: center; }
.ent-beyond-title { font-size: clamp(1.75rem, 2.8vw, 2.5rem); font-weight: 900; letter-spacing: -0.03em; color: var(--ent-ink); margin-bottom: 1.25rem; line-height: 1.2; }
.ent-beyond-text { font-size: 1rem; line-height: 1.9; color: var(--ent-ink-2); margin-bottom: 1.75rem; }
.ent-beyond-points { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 2px solid var(--ent-ink); }
.ent-beyond-point { padding: 1.25rem 1rem 0 0; }
.ent-beyond-point:not(:first-child) { padding-left: 1rem; border-left: 1px solid var(--ent-line); }
.ent-beyond-point-title { font-size: 0.9375rem; font-weight: 800; color: var(--ent-ink); margin-bottom: 0.25rem; }
.ent-beyond-point-desc { font-size: 0.75rem; color: var(--ent-ink-3); line-height: 1.7; }
.ent-beyond-media { position: relative; }
.ent-beyond-media img { width: 100%; display: block; }
.ent-beyond-media-tag {
    position: absolute;
    left: 0;
    bottom: 1.5rem;
    background: var(--ent-navy);
    color: #fff;
    padding: 1rem 1.5rem;
    max-width: 82%;
}
.ent-beyond-media-tag-title { font-size: 1rem; font-weight: 800; margin-bottom: 0.25rem; }
.ent-beyond-media-tag-desc { font-size: 0.75rem; color: rgba(203, 213, 225, 0.8); }

/* ---- CTA 实色带 ---- */
.ent-cta {
    background: var(--ent-navy);
    padding: 5.5rem 0;
    position: relative;
    overflow: hidden;
}
.ent-cta::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: var(--ent-gold);
}
.ent-cta-title { font-size: clamp(1.875rem, 3vw, 2.75rem); font-weight: 900; letter-spacing: -0.03em; color: #fff; margin-bottom: 1rem; }
.ent-cta-desc { color: rgba(203, 213, 225, 0.75); max-width: 40rem; margin-bottom: 2.25rem; line-height: 1.85; }
.ent-cta-row { display: flex; align-items: center; gap: 2rem; flex-wrap: wrap; }
.ent-cta-note { font-size: 0.8125rem; color: rgba(203, 213, 225, 0.55); }

/* ---- 滚动显现（克制）---- */
.ent-reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 1, 0.36, 1); }
.ent-reveal.is-visible { opacity: 1; transform: none; }

/* ---- 响应式 ---- */
@media (max-width: 1023px) {
    .ent-hero-strip { grid-template-columns: repeat(2, 1fr); }
    .ent-hero-strip-item:nth-child(2) { border-right: 0; }
    .ent-hero-strip-item:nth-child(-n+2) { border-bottom: 1px solid rgba(255, 255, 255, 0.14); }
    .ent-capability-grid { grid-template-columns: repeat(2, 1fr); }
    .ent-capability-col:nth-child(2) { border-right: 0; }
    .ent-capability-col:nth-child(-n+2) { border-bottom: 1px solid var(--ent-line); }
    .ent-arc-grid { grid-template-columns: 1fr; }
    .ent-arc-cell { border-right: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.16); padding: 2rem 0; }
    .ent-arc-cell:not(:first-child) { padding-left: 0; }
    .ent-matrix-grid { grid-template-columns: 1fr; }
    .ent-data-grid, .ent-beyond-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}
@media (max-width: 767px) {
    .ent-hero { min-height: 88svh; }
    .ent-hero-strip { grid-template-columns: 1fr; }
    .ent-hero-strip-item { border-right: 0; border-bottom: 1px solid rgba(255, 255, 255, 0.14); }
    .ent-capability-grid { grid-template-columns: 1fr; }
    .ent-capability-col { border-right: 0; border-bottom: 1px solid var(--ent-line); }
    .ent-matrix-cell { padding: 1.75rem; }
    .ent-matrix-row { grid-template-columns: 1fr; gap: 0.25rem; }
    .ent-step { grid-template-columns: 3rem 1fr; }
    .ent-step-cycle { grid-column: 2; justify-self: start; margin-top: 0.5rem; }
    .ent-beyond-points { grid-template-columns: 1fr; }
    .ent-beyond-point:not(:first-child) { padding-left: 0; border-left: 0; border-top: 1px solid var(--ent-line); }
}

@media (prefers-reduced-motion: reduce) {
    .ent-hero-bg { animation: none; transform: none; }
    .ent-reveal { opacity: 1; transform: none; transition: none; }
}