/* =====================================================================
   auriga.css —— 纵横天下 Auriga（疗愈系列）页样式（类名前缀 au-）
   图文素材来自《纵横天下 产品手册.pdf》，渲染图 au-1.jpg ~ au-17.jpg
   ===================================================================== */

/* ---------- 内页 Banner ---------- */
.au-hero {
    position: relative;
    padding: 150px 0 70px;
    text-align: center;
    background:
        linear-gradient(180deg, rgba(10, 12, 18, 0) 0%, rgba(10, 12, 18, 0.6) 100%),
        url(banner/2-2.jpg) center center / cover no-repeat;
    overflow: hidden;
}
.au-hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 50% 0%, rgba(200, 160, 96, 0.14), transparent 70%);
    pointer-events: none;
}
.au-hero-content { position: relative; z-index: 1; }
.au-breadcrumb {
    font-size: 13px;
    color: var(--text-gray);
    letter-spacing: 1px;
    margin-bottom: 26px;
}
.au-breadcrumb a { color: var(--text-gray); transition: color 0.25s; }
.au-breadcrumb a:hover { color: var(--gold); }
.au-breadcrumb-sep { margin: 0 8px; opacity: 0.5; }
.au-breadcrumb-current { color: var(--silver); }
.au-hero-tag {
    display: inline-block;
    font-size: 13px;
    letter-spacing: 4px;
    color: var(--gold);
    border: 1px solid var(--border);
    padding: 8px 22px;
    margin-bottom: 26px;
}
.au-hero-title {
    font-size: 46px;
    font-weight: 700;
    letter-spacing: 6px;
    background: linear-gradient(120deg, #F5EBD8 20%, var(--gold) 55%, #F5EBD8 90%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 18px;
}
.au-hero-sub {
    font-size: 18px;
    letter-spacing: 3px;
    color: var(--silver);
    margin-bottom: 14px;
}
.au-hero-slogan {
    font-size: 15px;
    letter-spacing: 6px;
    color: var(--text-gray);
    margin-bottom: 26px;
}
.au-hero-limited {
    display: inline-block;
    font-size: 13px;
    letter-spacing: 3px;
    color: var(--gold);
    border: 1px solid var(--gold);
    padding: 8px 26px;
}
.au-cover { margin-top: 56px; }
.au-cover img {
    display: block;
    width: 100%;
    border: 1px solid var(--border);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

/* ---------- 全幅视觉横幅 ---------- */
.au-banner { margin-top: 76px; }
.au-banner img { display: block; width: 100%; }

/* ---------- 章节通用（左文右图 / 交替） ---------- */
.au-chapter { padding: 76px 0 0; }
.au-chapter-inner {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: center;
}
.au-chapter-inner.au-reverse .au-chapter-text { order: 2; }
.au-chapter-inner.au-reverse .au-chapter-pic { order: 1; }
.au-chapter-no {
    font-size: 12px;
    letter-spacing: 4px;
    color: var(--gold);
    margin-bottom: 12px;
}
.au-chapter-title {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--text-white);
    margin-bottom: 10px;
}
.au-chapter-lead {
    font-size: 15px;
    letter-spacing: 1px;
    color: var(--gold);
    margin-bottom: 18px;
}
.au-chapter-desc {
    font-size: 14px;
    line-height: 2;
    color: var(--text-gray);
    margin-bottom: 22px;
}
.au-points { list-style: none; }
.au-points li {
    position: relative;
    padding: 12px 0 12px 22px;
    border-top: 1px solid rgba(200, 160, 96, 0.1);
    font-size: 14px;
    line-height: 1.9;
    color: var(--text-gray);
}
.au-points li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 21px;
    width: 8px;
    height: 8px;
    background: var(--gold);
    transform: rotate(45deg);
}
.au-points b {
    display: block;
    font-size: 15px;
    letter-spacing: 1px;
    color: var(--text-white);
    margin-bottom: 2px;
}
.au-chapter-pic img {
    display: block;
    width: 100%;
    border: 1px solid var(--border);
    box-shadow: 0 18px 46px rgba(0, 0, 0, 0.45);
    transition: transform 0.4s;
}
.au-chapter-pic img:hover { transform: scale(1.015); }

/* ---------- 数字亮点条 ---------- */
.au-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 26px;
    border: 1px solid var(--border);
    background: var(--bg-card);
}
.au-stat {
    padding: 18px 12px;
    text-align: center;
    border-right: 1px solid rgba(200, 160, 96, 0.12);
}
.au-stat:last-child { border-right: none; }
.au-stat-num {
    font-size: 22px;
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 4px;
}
.au-stat-note {
    font-size: 12px;
    letter-spacing: 1px;
    color: var(--text-gray);
}

/* ---------- 四款内饰主题色卡 ---------- */
.au-colors {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-top: 22px;
}
.au-color {
    border: 1px solid rgba(200, 160, 96, 0.12);
    background: var(--bg-card);
    padding: 14px 10px;
    text-align: center;
}
.au-color-swatch {
    width: 40px;
    height: 40px;
    margin: 0 auto 10px;
    border-radius: 50%;
    border: 2px solid rgba(240, 242, 245, 0.25);
}
.au-color-name {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--text-white);
    margin-bottom: 4px;
}
.au-color-note { font-size: 11px; color: var(--text-gray); }
.au-color-violet .au-color-swatch { background: linear-gradient(135deg, #6E4A8E, #452C60); }
.au-color-gold .au-color-swatch { background: linear-gradient(135deg, #C87F3A, #8E5522); }
.au-color-blue .au-color-swatch { background: linear-gradient(135deg, #3A6EA5, #22456E); }
.au-color-brown .au-color-swatch { background: linear-gradient(135deg, #8E6A4A, #5C422C); }

/* ---------- 收尾区（封底背景） ---------- */
.au-cta {
    position: relative;
    margin-top: 90px;
    padding: 110px 0 120px;
    text-align: center;
    background: url(images/au-17.jpg) center center / cover no-repeat;
    overflow: hidden;
}
.au-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10, 12, 18, 0.9) 0%, rgba(10, 12, 18, 0.45) 45%, rgba(10, 12, 18, 0.9) 100%);
}
.au-cta-content { position: relative; z-index: 1; }
.au-cta-en {
    font-size: 14px;
    letter-spacing: 6px;
    color: var(--silver);
    margin-bottom: 16px;
}
.au-cta-title {
    font-size: 30px;
    font-weight: 700;
    letter-spacing: 4px;
    background: linear-gradient(120deg, #F5EBD8 20%, var(--gold) 55%, #F5EBD8 90%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 16px;
}
.au-cta-text {
    max-width: 640px;
    margin: 0 auto 32px;
    font-size: 14.5px;
    line-height: 2;
    color: var(--text-gray);
}
.au-cta-tel {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--gold);
    margin-bottom: 28px;
}
.au-btn-gold {
    display: inline-block;
    padding: 14px 44px;
    font-size: 15px;
    letter-spacing: 3px;
    color: #0A0C12;
    background: linear-gradient(120deg, var(--gold) 0%, #E0C088 50%, var(--gold) 100%);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s;
}
.au-btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(200, 160, 96, 0.35);
}
.au-btn-outline {
    display: inline-block;
    margin-left: 16px;
    padding: 13px 40px;
    font-size: 15px;
    letter-spacing: 3px;
    color: var(--gold);
    background: transparent;
    border: 1px solid var(--gold);
    text-decoration: none;
    transition: all 0.3s;
}
.au-btn-outline:hover { background: rgba(200, 160, 96, 0.1); }

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
    .au-chapter-inner { grid-template-columns: 1fr; gap: 28px; }
    .au-chapter-inner.au-reverse .au-chapter-text { order: 1; }
    .au-chapter-inner.au-reverse .au-chapter-pic { order: 2; }
    .au-hero-title { font-size: 34px; }
    .au-colors { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .au-hero { padding: 120px 0 50px; }
    .au-hero-title { font-size: 28px; letter-spacing: 3px; }
    .au-chapter-title { font-size: 23px; }
    .au-stats { grid-template-columns: 1fr; }
    .au-stat { border-right: none; border-bottom: 1px solid rgba(200, 160, 96, 0.12); }
    .au-stat:last-child { border-bottom: none; }
    .au-btn-outline { margin-left: 0; margin-top: 14px; }
    .au-cta-tel { font-size: 25px; }
}