/* ============================================
   vip.khb.com — KHB VIP 定制服务专用样式
   色彩：KHB 橙红 + 黄金金 + 深邃黑
   字体：Sora / Noto Sans SC
   调性：高端定制 · 商务感 · 质感
   ============================================ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --bg: #111418;          /* 主背景：深石墨黑 */
    --surface: #1A202C;     /* 卡片背景 */
    --surface-2: #202838;   /* 卡片 Hover 背景 */
    --surface-3: #151A21;   /* 深色区域背景 */
    --text: #FFFFFF;        /* 主标题 */
    --text-dim: #CBD5E1;    /* 正文文字 */
    --muted: #94A3B8;       /* 辅助文字 */
    --border: #2D3748;      /* 边框 */
    --border-strong: #263140; /* 弱边框 */
    --orange: #F97316;      /* CTA 橙 */
    --orange-2: #FB923C;    /* 亮橙 */
    --orange-dim: rgba(249,115,22,0.08);
    --orange-glow: rgba(249,115,22,0.32);
    --amber: #3B82F6;       /* AI 蓝 */
    --amber-2: #60A5FA;     /* 浅蓝 */
    --amber-dim: rgba(59,130,246,0.1);
    --gold-grad: linear-gradient(135deg,#3B82F6 0%,#60A5FA 50%,#3B82F6 100%);
    --orange-grad: linear-gradient(135deg,#F97316 0%,#FB923C 100%);
    --dark-grad: linear-gradient(180deg,#111418 0%,#151A21 100%);
}
body.light-mode {
    --bg: #F5F6F8; --surface: #FFFFFF; --surface-2: #F8F9FB; --surface-3: #EEF0F4;
    --text: #1a1a2e; --text-dim: #4A5165; --muted: #6B7280;
    --border: rgba(0,0,0,0.08); --border-strong: rgba(0,0,0,0.16);
    --orange-dim: rgba(249,115,22,0.06); --orange-glow: rgba(249,115,22,0.18);
    --amber-dim: rgba(59,130,246,0.08);
    --dark-grad: linear-gradient(180deg,#FAFAFA 0%,#F0F1F4 100%);
}
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
    font-family: 'Noto Sans SC', 'Sora', system-ui, sans-serif;
    font-size: 16px;
    background: var(--bg); color: var(--text);
    overflow-x: hidden; line-height: 1.65;
    transition: background 0.4s, color 0.4s;
}

/* 选区 */
::selection { background: var(--orange); color: #fff; }

/* =============== NAV =============== */
nav.top-nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; justify-content: space-between; align-items: center;
    padding: 1rem 3rem; transition: all 0.4s;
    background: transparent;
}
nav.top-nav.scrolled {
    background: rgba(17,20,24,0.92); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}
body.light-mode nav.top-nav.scrolled { background: rgba(245,246,248,0.92); }

.nav-logo {
    display: flex; align-items: center; gap: 0.6rem;
    text-decoration: none; color: var(--text);
    font-weight: 500; font-size: 1.05rem; letter-spacing: 3px;
}
.nav-logo img { height: 32px; }
.nav-logo .vip-tag {
    font-size: 0.55rem; letter-spacing: 2px;
    padding: 3px 8px; border: 1px solid var(--amber);
    color: var(--amber); border-radius: 4px;
    margin-left: 0.4rem; font-weight: 500;
}

.nav-links { display: flex; gap: 2.2rem; align-items: center; }
.nav-links a {
    font-size: 0.78rem; font-weight: 400; letter-spacing: 1.5px;
    color: var(--text-dim); text-decoration: none; transition: color 0.3s;
    position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--orange); }
.nav-links a.active::after {
    content: ''; position: absolute; bottom: -8px; left: 0; right: 0;
    height: 2px; background: var(--orange);
}

.nav-actions { display: flex; align-items: center; gap: 0.8rem; }

.nav-theme-btn, .nav-menu-btn {
    display: flex; align-items: center; justify-content: center;
    background: none; border: 1px solid var(--border); border-radius: 6px;
    width: 36px; height: 36px; cursor: pointer; transition: all 0.3s;
    color: var(--text-dim); padding: 0;
}
.nav-theme-btn:hover, .nav-menu-btn:hover { border-color: var(--orange); color: var(--orange); }
.nav-theme-btn svg { width: 16px; height: 16px; }
.nav-theme-btn .icon-sun { display: none; }
body.light-mode .nav-theme-btn .icon-moon { display: none; }
body.light-mode .nav-theme-btn .icon-sun { display: block; }

.nav-menu-btn { display: none; flex-direction: column; gap: 4px; }
.nav-menu-btn span { display: block; width: 18px; height: 1.5px; background: currentColor; transition: 0.3s; border-radius: 1px; }
.nav-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(4px,4px); }
.nav-menu-btn.active span:nth-child(2) { opacity: 0; }
.nav-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(4px,-4px); }

.mobile-menu {
    position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
    background: var(--surface); z-index: 999; padding: 80px 0 40px;
    transition: right 0.4s cubic-bezier(0.4,0,0.2,1);
    box-shadow: -10px 0 40px rgba(0,0,0,0.3);
    overflow-y: auto;
}
.mobile-menu.open { right: 0; }
.mobile-menu-inner { display: flex; flex-direction: column; }
.mobile-menu-link {
    display: block; padding: 1.1rem 2rem; font-size: 0.88rem;
    color: var(--text); text-decoration: none; font-weight: 400;
    letter-spacing: 1.5px; transition: all 0.3s; border-left: 2px solid transparent;
}
.mobile-menu-link:hover, .mobile-menu-link.active { background: var(--orange-dim); color: var(--orange); border-left-color: var(--orange); }
.mobile-menu-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.5);
    z-index: 998; opacity: 0; visibility: hidden; transition: all 0.3s;
}
.mobile-menu-overlay.open { opacity: 1; visibility: visible; }

/* =============== 通用组件 =============== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 2rem; }

.eyebrow {
    display: inline-block; font-size: 0.7rem; letter-spacing: 3px;
    color: var(--amber); text-transform: uppercase; font-weight: 500;
    padding-bottom: 0.4rem; border-bottom: 1px solid var(--amber-dim);
    margin-bottom: 1.2rem;
}

.section-title {
    font-size: 34px;
    font-weight: 600; color: var(--text);
    letter-spacing: 0.5px; line-height: 1.3; margin-bottom: 1rem;
}
.section-title em {
    font-style: normal; background: var(--orange-grad);
    -webkit-background-clip: text; background-clip: text; color: transparent;
}

.section-sub {
    font-size: 1.05rem; color: var(--text-dim); line-height: 1.7;
    max-width: 720px;
}

.btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 0.5rem; padding: 0 1.5rem; border-radius: 6px;
    font-size: 0.88rem; font-weight: 500; letter-spacing: 1px;
    text-decoration: none; cursor: pointer; transition: all 0.3s;
    border: 1px solid transparent; white-space: nowrap;
    height: 44px;
}
.btn-primary { background: var(--orange); color: #fff; border-color: var(--orange); }
.btn-primary:hover { background: var(--orange-2); transform: translateY(-2px); box-shadow: 0 10px 30px var(--orange-glow); }
.btn-amber { background: var(--amber); color: #1a1a2e; border-color: var(--amber); font-weight: 600; }
.btn-amber:hover { background: var(--amber-2); transform: translateY(-2px); box-shadow: 0 10px 30px rgba(255,184,0,0.32); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { border-color: var(--orange); color: var(--orange); }
.btn-outline-orange { background: transparent; color: var(--orange); border-color: var(--orange); }
.btn-outline-orange:hover { background: var(--orange); color: #fff; }
.btn-lg { padding: 1.05rem 2.2rem; font-size: 0.95rem; }

.btn .arrow { display: inline-block; transition: transform 0.3s; }
.btn:hover .arrow { transform: translateX(4px); }

/* =============== HERO =============== */
.hero {
    position: relative; min-height: 100vh; padding: 8rem 0 5rem;
    display: flex; align-items: center; overflow: hidden;
    background: var(--bg);
}
.hero-bg {
    position: absolute; inset: 0; z-index: 0; pointer-events: none;
    background-color: #111418;
}
.hero-bg::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(10,10,25,0.08) 0%, rgba(15,15,35,0.04) 50%, rgba(10,10,25,0.10) 100%);
}

/* ===== HERO base background (canvas draws dynamic effects on top) ===== */
.hero-bg {
    position: absolute; inset: 0; z-index: 0; pointer-events: none;
    overflow: hidden;
    box-shadow: inset 0 -80px 120px rgba(0,0,0,0.6), inset 0 40px 80px rgba(0,0,0,0.3);
}

.page-index .hero-bg { background: linear-gradient(135deg, #111418 0%, #151A21 30%, #111418 60%, #0D1117 100%); }
.page-services .hero-bg { background: linear-gradient(160deg, #111418 0%, #151A21 25%, #111418 55%, #0D1117 100%); }
.page-process .hero-bg { background: linear-gradient(180deg, #111418 0%, #151A21 30%, #111418 65%, #0D1117 100%); }
.page-cases .hero-bg { background: linear-gradient(145deg, #111418 0%, #151A21 25%, #111418 55%, #0D1117 100%); }
.page-resources .hero-bg { background: linear-gradient(170deg, #111418 0%, #151A21 30%, #111418 60%, #0D1117 100%); }
.page-contact .hero-bg { background: linear-gradient(150deg, #111418 0%, #151A21 25%, #111418 55%, #0D1117 100%); }
.page-diagnostic .hero-bg { background: linear-gradient(180deg, #111418 0%, #151A21 30%, #111418 60%, #0D1117 100%); }

/* Hero ambient orbs (enhanced glow) */
.hero::before {
    content: ''; position: absolute; top: -20%; right: -10%;
    width: 70%; height: 70%;
    background: radial-gradient(closest-side, var(--orange-glow) 0%, transparent 70%);
    filter: blur(80px); pointer-events: none; z-index: 1;
    opacity: 0.7;
}
.hero::after {
    content: ''; position: absolute; bottom: -20%; left: -10%;
    width: 60%; height: 60%;
    background: radial-gradient(closest-side, rgba(255,184,0,0.2) 0%, transparent 70%);
    filter: blur(80px); pointer-events: none; z-index: 1;
    opacity: 0.7;
}

.hero .container { position: relative; z-index: 3; }

.hero-grid {
    display: grid; grid-template-columns: 1.4fr 1fr; gap: 4rem;
    align-items: center;
}
.hero-eyebrow {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.45rem 1rem; border: 1px solid var(--amber-dim);
    border-radius: 100px; color: var(--amber); font-size: 0.7rem;
    letter-spacing: 2.5px; margin-bottom: 1.5rem; background: var(--amber-dim);
}
.hero-eyebrow .dot { width: 6px; height: 6px; background: var(--amber); border-radius: 50%; box-shadow: 0 0 12px var(--amber); }

.hero-title {
    font-size: 44px; font-weight: 700;
    line-height: 1.15; letter-spacing: -0.5px; margin-bottom: 1.5rem;
    color: var(--text);
}
.hero-title em {
    font-style: normal; background: var(--gold-grad);
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-title .accent {
    background: var(--orange-grad);
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
    font-size: 1.15rem; color: var(--text-dim); line-height: 1.75;
    margin-bottom: 2.5rem; max-width: 640px;
}
.hero-stats {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
    margin: 3rem 0; padding: 2rem 0; border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.hero-stat .v {
    font-size: clamp(1.6rem, 2.4vw, 2.2rem); font-weight: 700;
    background: var(--gold-grad);
    -webkit-background-clip: text; background-clip: text; color: transparent;
    line-height: 1; margin-bottom: 0.4rem;
}
.hero-stat .l { font-size: 0.78rem; color: var(--text-dim); letter-spacing: 1px; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-card {
    background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
    border: 1px solid var(--border-strong); border-radius: 8px;
    padding: 2.5rem 2rem; position: relative; overflow: hidden;
}
.hero-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: var(--gold-grad);
}
.hero-card-tag {
    display: inline-block; font-size: 0.7rem; letter-spacing: 2px;
    color: var(--amber); margin-bottom: 1.2rem;
    padding: 4px 10px; border: 1px solid var(--amber-dim);
    border-radius: 4px; background: var(--amber-dim);
}
.hero-card-title {
    font-size: 1.3rem; font-weight: 600; color: var(--text);
    margin-bottom: 0.8rem;
}
.hero-card-desc {
    font-size: 0.9rem; color: var(--text-dim); line-height: 1.7; margin-bottom: 1.5rem;
}
.hero-card-list { list-style: none; }
.hero-card-list li {
    display: flex; gap: 0.6rem; padding: 0.5rem 0;
    font-size: 0.85rem; color: var(--text-dim);
    border-bottom: 1px dashed var(--border);
}
.hero-card-list li:last-child { border-bottom: none; }
.hero-card-list li::before {
    content: '◆'; color: var(--amber); font-size: 0.7rem; flex-shrink: 0; margin-top: 0.2rem;
}

@media (max-width: 980px) {
    .hero { padding: 7rem 0 4rem; }
    .hero-grid { grid-template-columns: 1fr; gap: 3rem; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
}

/* =============== SECTIONS =============== */
section { padding: 5rem 0; position: relative; }
section.section-alt { background: linear-gradient(180deg, transparent, var(--orange-dim), transparent); }

.section-head { text-align: center; max-width: 800px; margin: 0 auto 4rem; }
.section-head .eyebrow { display: inline-block; }
.section-head .section-sub { margin: 0.8rem auto 0; }

/* =============== 差异化 =============== */
.diff-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
}
.diff-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px; padding: 2rem 1.5rem;
    transition: all 0.3s; position: relative; overflow: hidden;
}
.diff-card:hover { transform: translateY(-4px); border-color: var(--orange); }
.diff-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 2px;
    background: var(--orange-grad); transform: scaleX(0); transform-origin: left;
    transition: transform 0.4s;
}
.diff-card:hover::before { transform: scaleX(1); }
.diff-icon {
    width: 52px; height: 52px; border-radius: 12px;
    background: var(--orange-dim); color: var(--orange);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; margin-bottom: 1.2rem;
}
.diff-card h3 { font-size: 22px; font-weight: 600; margin-bottom: 0.6rem; color: var(--text); }
.diff-card p { font-size: 0.88rem; color: var(--text-dim); line-height: 1.7; }

@media (max-width: 900px) { .diff-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .diff-grid { grid-template-columns: 1fr; } }

/* =============== 服务包卡片 =============== */
.packages { display: flex; flex-direction: column; gap: 1.5rem; }
.pkg {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px; padding: 2.5rem; position: relative;
    transition: all 0.3s; display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 0.8fr; gap: 2rem;
    align-items: center;
}
.pkg:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.pkg.featured {
    background: linear-gradient(135deg, rgba(255,85,0,0.08) 0%, var(--surface) 60%);
    border-color: var(--orange);
    box-shadow: 0 20px 60px -20px var(--orange-glow);
}
.pkg.featured::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: var(--orange-grad);
}
.pkg-flag {
    position: absolute; top: -12px; right: 24px;
    background: var(--orange); color: #fff;
    font-size: 0.7rem; letter-spacing: 2px; padding: 4px 14px;
    border-radius: 100px; font-weight: 500;
}
.pkg-flag.amber { background: var(--amber); color: #1a1a2e; }

.pkg-info { min-width: 0; }
.pkg-tier {
    display: inline-block; font-size: 0.7rem; letter-spacing: 2.5px;
    color: var(--amber); margin-bottom: 0.6rem; font-weight: 600;
}
.pkg-name {
    font-size: 1.4rem; font-weight: 600; color: var(--text);
    margin-bottom: 0.6rem; letter-spacing: 0.5px;
}
.pkg-tag {
    display: inline-block; font-size: 0.7rem; letter-spacing: 1.5px;
    padding: 3px 10px; border: 1px solid var(--border);
    border-radius: 4px; color: var(--text-dim); margin-right: 0.4rem;
    margin-bottom: 0.4rem;
}
.pkg-tag.amber { border-color: var(--amber); color: var(--amber); }
.pkg-desc { font-size: 0.92rem; color: var(--text-dim); line-height: 1.7; margin-top: 0.6rem; }

.pkg-feature { min-width: 0; }
.pkg-feature h4 {
    font-size: 0.75rem; letter-spacing: 2px; color: var(--amber);
    margin-bottom: 1rem; font-weight: 500;
}
.pkg-feature ul { list-style: none; }
.pkg-feature li {
    display: flex; gap: 0.5rem; padding: 0.35rem 0;
    font-size: 0.85rem; color: var(--text-dim);
}
.pkg-feature li::before {
    content: '✓'; color: var(--orange); font-weight: 600; flex-shrink: 0;
}

.pkg-price { text-align: right; min-width: 0; }
.pkg-price-label { font-size: 0.7rem; color: var(--muted); letter-spacing: 2px; margin-bottom: 0.4rem; }
.pkg-price-v {
    font-size: 2rem; font-weight: 700;
    background: var(--gold-grad);
    -webkit-background-clip: text; background-clip: text; color: transparent;
    line-height: 1; margin-bottom: 0.3rem;
}
.pkg-price-v small { font-size: 0.85rem; color: var(--text-dim); font-weight: 400; }
.pkg-price-tip { font-size: 0.72rem; color: var(--muted); margin-top: 0.4rem; }

.pkg-cta { text-align: center; }
.pkg-cta .btn { width: 100%; }

@media (max-width: 980px) {
    .pkg { grid-template-columns: 1fr; gap: 1.5rem; text-align: left; }
    .pkg-price { text-align: left; }
}

/* =============== 流程时间轴 =============== */
.timeline { position: relative; max-width: 880px; margin: 0 auto; }
.timeline::before {
    content: ''; position: absolute; top: 0; bottom: 0; left: 50%;
    width: 1px; background: var(--border-strong); transform: translateX(-50%);
}
.timeline-item {
    display: grid; grid-template-columns: 1fr 60px 1fr;
    gap: 0; margin-bottom: 2.5rem; align-items: center;
}
.timeline-content {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px; padding: 1.5rem; transition: all 0.3s;
}
.timeline-content:hover { border-color: var(--orange); transform: translateY(-2px); }
.timeline-item:nth-child(odd) .timeline-content { grid-column: 1; text-align: right; }
.timeline-item:nth-child(even) .timeline-content { grid-column: 3; }
.timeline-item:nth-child(odd) .timeline-empty { grid-column: 3; }
.timeline-item:nth-child(even) .timeline-empty { grid-column: 1; }
.timeline-num {
    grid-column: 2; width: 50px; height: 50px;
    background: var(--orange-grad); color: #fff;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 1.1rem; margin: 0 auto;
    box-shadow: 0 0 0 6px var(--bg), 0 0 0 7px var(--orange);
    z-index: 1; position: relative;
}
.timeline-content .day {
    display: inline-block; font-size: 0.7rem; letter-spacing: 2px;
    color: var(--amber); margin-bottom: 0.4rem;
    padding: 3px 10px; border: 1px solid var(--amber-dim);
    border-radius: 4px; background: var(--amber-dim);
}
.timeline-content h3 { font-size: 22px; font-weight: 600; margin-bottom: 0.5rem; color: var(--text); }
.timeline-content p { font-size: 0.88rem; color: var(--text-dim); line-height: 1.7; }
@media (max-width: 768px) {
    .timeline { overflow-x: hidden; padding-left: 0; }
    .timeline::before { left: 18px; }
    .timeline-item { grid-template-columns: 36px 1fr; gap: 0.8rem; margin-bottom: 1.5rem; }
    .timeline-num {
        grid-column: 1;
        width: 36px; height: 36px;
        font-size: 0.8rem;
        box-shadow: 0 0 0 3px var(--bg), 0 0 0 4px var(--orange);
    }
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content { grid-column: 2; text-align: left; }
    .timeline-item:nth-child(odd) .timeline-empty,
    .timeline-item:nth-child(even) .timeline-empty { display: none; }
    .timeline-content { padding: 1rem 1.1rem; }
    .timeline-content h3 { font-size: 0.92rem; }
    .timeline-content p { font-size: 0.8rem; line-height: 1.6; }
    .timeline-content .day { font-size: 0.65rem; padding: 2px 8px; }
}

/* =============== 案例 =============== */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.case-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px; padding: 2rem; transition: all 0.3s;
    position: relative; overflow: hidden;
}
.case-card:hover { border-color: var(--orange); transform: translateY(-4px); }
.case-head { display: flex; gap: 0.8rem; margin-bottom: 1.2rem; align-items: center; }
.case-badge {
    width: 44px; height: 44px; border-radius: 10px;
    background: var(--orange-dim); color: var(--orange);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; flex-shrink: 0;
}
.case-name { font-size: 1.05rem; font-weight: 600; color: var(--text); margin-bottom: 0.2rem; }
.case-meta { font-size: 0.78rem; color: var(--muted); }
.case-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; margin: 1.2rem 0; }
.case-compare .ci {
    background: var(--surface-2); border: 1px solid var(--border);
    border-radius: 8px; padding: 0.8rem; text-align: center;
}
.case-compare .ci.before .v { color: var(--muted); }
.case-compare .ci.after .v { color: var(--orange); font-weight: 700; }
.case-compare .l { font-size: 0.7rem; color: var(--text-dim); margin-bottom: 0.3rem; }
.case-compare .v { font-size: 1.05rem; font-weight: 600; color: var(--text); }
.case-summary { font-size: 0.85rem; color: var(--text-dim); line-height: 1.7; }
@media (max-width: 900px) {
    .case-grid { grid-template-columns: 1fr !important; }
    .case-grid[style*="1.4fr"] { grid-template-columns: 1fr !important; }
    .case-card { padding: 1.5rem !important; }
    .case-compare { gap: 0.6rem; }
    .case-compare .ci { padding: 0.6rem; }
    .case-compare .v { font-size: 0.92rem; }
    .case-compare .l { font-size: 0.65rem; }
    .case-head { margin-bottom: 1rem; }
    .case-name { font-size: 0.95rem; }
    .case-meta { font-size: 0.72rem; }
    .case-summary { font-size: 0.82rem; line-height: 1.6; }
    .case-badge { width: 36px; height: 36px; font-size: 1rem; }
}

/* =============== 对比表 =============== */
.compare-table {
    width: 100%; border-collapse: separate; border-spacing: 0;
    background: var(--surface); border-radius: 8px; overflow: hidden;
    border: 1px solid var(--border);
}
.compare-table th, .compare-table td {
    padding: 1.1rem 1.2rem; text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}
.compare-table th {
    background: var(--surface-2); color: var(--amber);
    font-weight: 500; font-size: 0.78rem; letter-spacing: 2px;
    text-transform: uppercase;
}
.compare-table th strong {
    display: inline-block;
    font-size: 1.4rem; font-weight: 800;
    background: var(--gold-grad);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    text-transform: none; letter-spacing: 0;
    margin: 0; padding: 0 0.15rem;
    vertical-align: middle;
}
.compare-table td { color: var(--text-dim); }
.compare-table td:first-child { color: var(--text); font-weight: 500; }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table .us { color: var(--orange); font-weight: 600; }
.compare-table .others { color: var(--muted); }
@media (max-width: 700px) {
    .compare-table th, .compare-table td { padding: 0.75rem 0.6rem; font-size: 0.78rem; white-space: normal; word-break: break-word; }
    .compare-table th { font-size: 0.65rem; letter-spacing: 1px; }
    .compare-table th strong { font-size: 1rem; }
    .compare-table td:first-child, .compare-table th:first-child { width: auto; min-width: 50px; }
    .compare-table td:nth-child(2), .compare-table th:nth-child(2) { width: auto; }
    .compare-table td:last-child, .compare-table th:last-child { width: auto; }
    .compare-table { min-width: 480px; table-layout: auto; }
    .table-scroll {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        width: 100%;
    }
    .table-scroll::-webkit-scrollbar { height: 4px; }
    .table-scroll::-webkit-scrollbar-track { background: var(--surface-2); border-radius: 2px; }
    .table-scroll::-webkit-scrollbar-thumb { background: var(--orange); border-radius: 2px; }
    .overview-table, .table-scroll { display: none; }
    .overview-cards { display: grid; gap: 1rem; }
    .ov-card {
        background: var(--surface); border: 1px solid var(--border);
        border-radius: 8px; padding: 1.2rem;
    }
    .ov-card-head {
        display: flex; justify-content: space-between; align-items: center;
        margin-bottom: 0.6rem;
    }
    .ov-tier {
        background: var(--orange-dim); color: var(--orange);
        font-size: 0.7rem; font-weight: 700; padding: 3px 10px;
        border-radius: 6px; letter-spacing: 1px;
    }
    .ov-price { color: var(--orange); font-weight: 700; font-size: 1rem; }
    .ov-name { font-size: 0.95rem; font-weight: 600; color: var(--text); margin-bottom: 0.8rem; }
    .ov-meta { display: flex; flex-direction: column; gap: 0.5rem; }
    .ov-meta-item {
        display: flex; justify-content: space-between; gap: 1rem;
        font-size: 0.78rem; line-height: 1.5;
    }
    .ov-meta-item span { color: var(--muted); flex-shrink: 0; min-width: 2rem; }
}
@media (min-width: 701px) {
    .overview-cards { display: none; }
}

/* =============== CTA =============== */
.cta-banner {
    background: linear-gradient(135deg, var(--surface) 0%, rgba(249,115,22,0.08) 100%);
    border: 1px solid var(--border-strong); border-radius: 8px;
    padding: 4rem 3rem; text-align: center; position: relative; overflow: hidden;
}
.cta-banner::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: var(--gold-grad);
}
.cta-banner h2 { font-size: 34px; font-weight: 600; margin-bottom: 1rem; color: var(--text); }
.cta-banner h2 em {
    font-style: normal; background: var(--gold-grad);
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.cta-banner p { font-size: 1.05rem; color: var(--text-dim); margin-bottom: 2rem; max-width: 640px; margin-left: auto; margin-right: auto; }
.cta-banner .actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* =============== FAQ =============== */
.faq-list { max-width: 880px; margin: 0 auto; }
.faq-item {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px; margin-bottom: 0.8rem; overflow: hidden;
    transition: all 0.3s;
}
.faq-item.open { border-color: var(--orange); }
.faq-q {
    padding: 1.3rem 1.5rem; cursor: pointer;
    display: flex; justify-content: space-between; align-items: center; gap: 1rem;
    font-size: 1rem; font-weight: 500; color: var(--text);
}
.faq-q::after {
    content: '+'; font-size: 1.5rem; color: var(--amber);
    transition: transform 0.3s; flex-shrink: 0;
}
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a {
    padding: 0 1.5rem; max-height: 0; overflow: hidden;
    transition: all 0.4s; color: var(--text-dim); font-size: 0.92rem; line-height: 1.8;
}
.faq-item.open .faq-a { padding: 0 1.5rem 1.3rem; max-height: 600px; }

/* =============== 团队/专家 =============== */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.team-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px; padding: 1.5rem; text-align: center;
    transition: all 0.3s;
}
.team-card:hover { border-color: var(--amber); transform: translateY(-4px); }
.team-avatar {
    width: 80px; height: 80px; border-radius: 50%;
    background: var(--orange-dim); color: var(--orange);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; margin: 0 auto 1rem;
    border: 2px solid var(--amber);
}
.team-name { font-size: 1rem; font-weight: 600; color: var(--text); margin-bottom: 0.2rem; }
.team-role { font-size: 0.78rem; color: var(--amber); letter-spacing: 1.5px; margin-bottom: 0.6rem; }
.team-bio { font-size: 0.82rem; color: var(--text-dim); line-height: 1.6; }
@media (max-width: 900px) { .team-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .team-grid { grid-template-columns: 1fr; } }

/* =============== 承诺 =============== */
.commit-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.commit {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px; padding: 2rem 1.5rem; text-align: center;
    transition: all 0.3s;
}
.commit:hover { border-color: var(--amber); transform: translateY(-3px); }
.commit-icon {
    width: 64px; height: 64px; border-radius: 16px;
    background: var(--gold-grad); color: #1a1a2e;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; margin: 0 auto 1.2rem; font-weight: 700;
}
.commit h3 { font-size: 22px; font-weight: 600; margin-bottom: 0.5rem; color: var(--text); }
.commit p { font-size: 0.88rem; color: var(--text-dim); line-height: 1.7; }

/* 服务详情卡片 */
.service-detail-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2.2rem;
    text-align: left;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}
.service-detail-card:hover {
    border-color: var(--amber);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}
.service-detail-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 184, 0, 0.4), transparent);
    opacity: 0;
    transition: opacity 0.35s;
}
.service-detail-card:hover::before { opacity: 1; }
.service-detail-head {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.6rem;
    padding-bottom: 1.3rem;
    border-bottom: 1px solid var(--border);
}
.service-detail-icon {
    width: 52px; height: 52px;
    border-radius: 12px;
    background: linear-gradient(145deg, rgba(255, 184, 0, 0.15), rgba(255, 140, 0, 0.1));
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
    border: 1px solid rgba(255, 184, 0, 0.2);
}
.service-detail-head h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text);
    margin: 0;
}
.service-detail-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.service-detail-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.6;
}
.service-detail-list li::before {
    content: '';
    flex-shrink: 0;
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--gold-grad);
    margin-top: 0.55rem;
    box-shadow: 0 0 8px rgba(255, 184, 0, 0.5);
}
.service-detail-list li strong {
    color: var(--text);
    font-weight: 600;
}

@media (max-width: 900px) { .commit-grid { grid-template-columns: repeat(2, 1fr) !important; } }
@media (max-width: 600px) {
    .commit-grid { grid-template-columns: 1fr !important; gap: 1rem !important; }
    .commit { padding: 1.5rem 1.2rem; }
    .commit-icon { width: 48px; height: 48px; font-size: 1.2rem; margin-bottom: 0.8rem; }
    .commit h3 { font-size: 0.95rem; }
    .commit p { font-size: 0.82rem; }
    .service-detail-card { padding: 1.5rem 1.2rem; }
}

/* =============== Footer =============== */
footer.site-footer {
    background: #0D1117; border-top: 1px solid var(--border);
    padding: 4rem 0 2rem; margin-top: 5rem;
}
.footer-grid {
    display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1.4fr;
    gap: 2.5rem; margin-bottom: 3rem;
}
.footer-brand-block { min-width: 0; }
.footer-brand { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 1rem; }
.footer-brand img { height: 32px; }
.footer-brand .vip-tag {
    font-size: 0.55rem; letter-spacing: 2px;
    padding: 3px 8px; border: 1px solid var(--amber);
    color: var(--amber); border-radius: 4px;
}
.footer-desc { font-size: 0.85rem; color: var(--text-dim); line-height: 1.7; margin-bottom: 1rem; }
.footer-tag {
    display: inline-block; font-size: 0.65rem; letter-spacing: 2.5px;
    color: var(--amber); padding: 4px 10px;
    border: 1px solid var(--amber-dim); border-radius: 4px;
    background: var(--amber-dim);
}
.footer-col h4 {
    font-size: 0.75rem; letter-spacing: 2.5px; color: var(--amber);
    margin-bottom: 1.2rem; font-weight: 500; text-transform: uppercase;
}
.footer-col a {
    display: block; font-size: 0.85rem; color: var(--text-dim);
    text-decoration: none; padding: 0.35rem 0; transition: color 0.3s;
}
.footer-col a:hover { color: var(--orange); }
.footer-bottom {
    border-top: 1px solid var(--border); padding-top: 1.5rem;
    display: flex; justify-content: space-between; align-items: center;
    font-size: 0.78rem; color: var(--muted); flex-wrap: wrap; gap: 1rem;
}
.footer-beian a {
    color: inherit !important; text-decoration: none !important;
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 2rem; } }
@media (max-width: 500px) { .footer-grid { grid-template-columns: 1fr; } }

/* =============== 浮动按钮 =============== */
.float-actions {
    position: fixed; right: 1.5rem; bottom: 1.5rem;
    display: flex; flex-direction: column; gap: 0.7rem; z-index: 90;
}
.float-btn {
    width: 48px; height: 48px; border-radius: 50%;
    background: var(--orange); color: #fff;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 6px 20px var(--orange-glow);
    cursor: pointer; transition: all 0.3s; border: none;
    font-size: 1.2rem;
}
.float-btn.amber { background: var(--amber); color: #1a1a2e; box-shadow: 0 6px 20px rgba(255,184,0,0.32); }
.float-btn:hover { transform: translateY(-2px) scale(1.06); }
.float-btn svg { width: 22px; height: 22px; }

/* 响应式菜单触发 */
@media (max-width: 900px) {
    .nav-links, .nav-actions .btn { display: none; }
    .nav-menu-btn { display: flex; }
    .container { padding: 0 1.5rem; }
    nav.top-nav { padding: 1rem 1.5rem; }
}
@media (min-width: 901px) {
    .mobile-menu, .mobile-menu-overlay { display: none; }
}

/* 简单工具类 */
.text-center { text-align: center; }
.text-amber { color: var(--amber); }
.text-orange { color: var(--orange); }
.mt-1 { margin-top: 1rem; } .mt-2 { margin-top: 2rem; } .mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; } .mb-2 { margin-bottom: 2rem; } .mb-3 { margin-bottom: 3rem; }

/* 提示免责 */
.disclaimer {
    font-size: 0.72rem; color: var(--muted);
    text-align: center; padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    background: var(--surface);
}

/* ============================================
   MAIA™ 方法论 / AI Agent / Resource 新增样式
   ============================================ */

/* MAIA 品牌色（AI 蓝，V2.6 统一色系） */
:root {
    --tech-blue: #3B82F6;
    --tech-blue-2: #60A5FA;
    --tech-blue-dim: rgba(59,130,246,0.1);
    --tech-blue-glow: rgba(59,130,246,0.28);
}

/* ============== MAIA™ 品牌标识 ============== */
.maia-brand {
    display: inline-flex; align-items: baseline; gap: 0.3rem;
    font-family: 'Sora', sans-serif; font-weight: 700;
    background: linear-gradient(135deg, #3B82F6 0%, #60A5FA 50%, #F97316 100%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
    letter-spacing: 2px;
}
.maia-brand sup { font-size: 0.5em; font-weight: 500; opacity: 0.85; }
.maia-tag {
    display: inline-block; font-size: 0.65rem; letter-spacing: 2.5px;
    padding: 4px 10px; border: 1px solid var(--tech-blue);
    color: var(--tech-blue); border-radius: 4px;
    background: var(--tech-blue-dim); font-weight: 500;
}

/* ============== MAIA 7 步法（7列网格） ============== */
.maia-steps {
    display: grid; grid-template-columns: repeat(7, 1fr);
    gap: 0.8rem; margin: 3rem 0;
}
.maia-step {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px; padding: 1.5rem 1rem; text-align: center;
    position: relative; transition: all 0.3s; overflow: hidden;
}
.maia-step:hover { transform: translateY(-4px); border-color: var(--tech-blue); box-shadow: 0 10px 30px var(--tech-blue-glow); }
.maia-step::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--tech-blue), var(--orange));
    transform: scaleX(0); transform-origin: left; transition: transform 0.4s;
}
.maia-step:hover::before { transform: scaleX(1); }
.maia-step .num {
    font-family: 'Sora', sans-serif; font-size: 0.75rem;
    color: var(--tech-blue); letter-spacing: 2px; font-weight: 600;
    margin-bottom: 0.6rem;
}
.maia-step .icon {
    width: 48px; height: 48px; margin: 0 auto 0.8rem;
    background: var(--tech-blue-dim); color: var(--tech-blue);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem;
}
.maia-step h4 { font-size: 0.92rem; font-weight: 600; color: var(--text); margin-bottom: 0.4rem; }
.maia-step p { font-size: 0.75rem; color: var(--text-dim); line-height: 1.5; }
@media (max-width: 1200px) {
    .maia-steps {
        grid-template-columns: 1fr !important;
        gap: 1rem;
        margin: 2rem 0;
        padding-left: 0;
        position: relative;
    }
    .maia-steps::before { display: none; }
    .maia-step {
        padding: 1.2rem 1.3rem;
        text-align: left;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: 8px;
        position: relative;
    }
    .maia-step:nth-child(5),
    .maia-step:nth-child(6),
    .maia-step:nth-child(7) { grid-column: auto; }
    .maia-step::before { display: none; }
    .maia-step:hover { transform: none; box-shadow: none; border-color: var(--border); }
    .maia-step::after {
        content: '↓';
        position: absolute;
        left: 50%;
        bottom: -0.9rem;
        transform: translateX(-50%);
        font-size: 0.8rem;
        color: var(--tech-blue);
        opacity: 0.6;
        z-index: 2;
        background: var(--bg);
        width: 1.4rem;
        text-align: center;
    }
    .maia-step:last-child::after { display: none; }
    .maia-step .num {
        position: static;
        width: auto;
        height: auto;
        margin: 0 0 0.6rem 0;
        background: transparent;
        border: none;
        border-radius: 0;
        display: flex;
        align-items: center;
        gap: 0.7rem;
        font-size: 0.72rem;
        letter-spacing: 2px;
        color: var(--tech-blue);
        font-weight: 600;
        z-index: 2;
        box-shadow: none;
    }
    .maia-step .num::before {
        content: '';
        width: 2rem;
        height: 2rem;
        border-radius: 50%;
        background: var(--tech-blue-dim);
        border: 1.5px solid var(--tech-blue);
        flex-shrink: 0;
    }
    .maia-step .icon { display: none; }
    .maia-step h4 {
        font-size: 1rem;
        font-weight: 600;
        margin: 0 0 0.5rem 0;
        color: var(--text);
    }
    .maia-step p {
        font-size: 0.82rem;
        line-height: 1.6;
        color: var(--text-dim);
        margin: 0;
    }
}

/* ============== AI 董事会 Agent 矩阵 ============== */
.agent-matrix {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem;
    margin: 2.5rem 0;
}
.agent-card {
    background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
    border: 1px solid var(--border); border-radius: 8px; padding: 1.8rem 1.3rem;
    text-align: center; transition: all 0.3s; position: relative; overflow: hidden;
}
.agent-card:hover { transform: translateY(-4px); border-color: var(--tech-blue); box-shadow: 0 12px 30px var(--tech-blue-glow); }
.agent-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--tech-blue), var(--tech-blue-2));
}
.agent-avatar {
    width: 64px; height: 64px; margin: 0 auto 1rem;
    background: linear-gradient(135deg, var(--tech-blue-dim), rgba(255,85,0,0.06));
    border: 2px solid var(--tech-blue);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; color: var(--tech-blue); font-weight: 700;
    font-family: 'Sora', sans-serif;
}
.agent-name { font-size: 1rem; font-weight: 600; color: var(--text); margin-bottom: 0.2rem; }
.agent-role { font-size: 0.7rem; color: var(--tech-blue); letter-spacing: 1.5px; margin-bottom: 0.8rem; font-weight: 500; }
.agent-cap { font-size: 0.78rem; color: var(--text-dim); line-height: 1.5; }
@media (max-width: 900px) { .agent-matrix { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .agent-matrix { grid-template-columns: 1fr; } }

/* Agent 协作工作流 */
.agent-flow {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px; padding: 2rem; margin: 2rem 0;
}
.agent-flow-title {
    font-size: 0.75rem; color: var(--tech-blue); letter-spacing: 2.5px;
    margin-bottom: 1.5rem; font-weight: 500;
}
.agent-flow-chain {
    display: flex; align-items: center; flex-wrap: wrap;
    gap: 0.5rem; justify-content: center;
}
.agent-flow-node {
    padding: 0.6rem 1.1rem; background: var(--tech-blue-dim);
    border: 1px solid var(--tech-blue); border-radius: 8px;
    color: var(--tech-blue); font-size: 0.85rem; font-weight: 500;
}
.agent-flow-arrow { color: var(--tech-blue-2); font-size: 1.1rem; }
.agent-flow-output {
    margin-top: 1.5rem; padding: 1rem; background: var(--surface-2);
    border: 1px dashed var(--tech-blue); border-radius: 8px;
    text-align: center; font-size: 0.85rem; color: var(--text-dim);
}
.agent-flow-output strong { color: var(--tech-blue); }

/* ============== GEO 白皮书系列 ============== */
.whitepaper-series {
    padding: 2rem 0 3rem;
}
.whitepaper-series-head {
    text-align: center;
    margin-bottom: 2rem;
}
.whitepaper-series-head .eyebrow {
    margin-bottom: 0.8rem;
}
.whitepaper-series-head h2 {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}
.whitepaper-series-head p {
    color: var(--text-dim);
    font-size: 0.9rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}
.whitepaper-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.whitepaper-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.8rem;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
}
.whitepaper-card:hover {
    transform: translateY(-4px);
    border-color: var(--amber);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25);
}
.whitepaper-card:hover .wp-icon {
    transform: scale(1.08);
}
.wp-no {
    font-size: 0.7rem;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-bottom: 0.8rem;
    font-weight: 500;
}
.wp-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(145deg, rgba(255, 184, 0, 0.18), rgba(255, 140, 0, 0.08));
    border: 1px solid rgba(255, 184, 0, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.2rem;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.wp-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.3rem;
    line-height: 1.4;
}
.wp-subtitle {
    font-size: 0.68rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 0.9rem;
}
.wp-desc {
    font-size: 0.82rem;
    color: var(--text-dim);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 1.2rem;
}
.wp-meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    margin-bottom: 1rem;
}
.wp-meta-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.72rem;
    color: var(--text-muted);
}
.wp-meta-item span {
    font-weight: 500;
    color: var(--text-dim);
}
.wp-cta {
    font-size: 0.82rem;
    color: var(--amber);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    transition: gap 0.3s;
}
.whitepaper-card:hover .wp-cta {
    gap: 0.6rem;
}

@media (max-width: 900px) {
    .whitepaper-grid { grid-template-columns: 1fr; }
}

/* ============== 联系页面 ============== */
.contact-section {
    padding: 3rem 0 5rem;
}
.contact-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 2.5rem;
    max-width: 1100px;
    margin: 0 auto;
}
.contact-form-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 2.8rem;
}
.form-head {
    margin-bottom: 2rem;
}
.form-head .eyebrow {
    margin-bottom: 0.8rem;
}
.form-head h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}
.form-head h2 em {
    font-style: normal;
    color: var(--amber);
}
.form-head p {
    color: var(--text-dim);
    font-size: 0.88rem;
    line-height: 1.7;
    max-width: 400px;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.2rem;
}
.form-group {
    margin-bottom: 1.2rem;
}
.form-label {
    display: block;
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    letter-spacing: 0.5px;
}
.form-label .req {
    color: var(--orange);
    margin-left: 2px;
}
.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-size: 0.88rem;
    font-family: inherit;
    transition: all 0.3s;
    box-sizing: border-box;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--amber);
    box-shadow: 0 0 0 3px rgba(255, 184, 0, 0.1);
}
.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%233B82F6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
    cursor: pointer;
}
.form-textarea {
    resize: vertical;
    min-height: 100px;
    line-height: 1.6;
}
.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    margin: 1.5rem 0;
    font-size: 0.78rem;
    color: var(--text-dim);
    line-height: 1.5;
}
.form-checkbox input[type="checkbox"] {
    margin-top: 2px;
    accent-color: var(--amber);
    cursor: pointer;
}
.form-checkbox a {
    color: var(--amber);
    text-decoration: none;
}
.form-checkbox a:hover {
    text-decoration: underline;
}
.form-submit {
    width: 100%;
    padding: 0.9rem;
    font-size: 0.92rem;
    font-weight: 600;
}

/* 右侧信息栏 */
.contact-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: sticky;
    top: 6rem;
    align-self: flex-start;
}
.info-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.8rem;
    transition: all 0.3s;
}
.info-card:hover {
    border-color: rgba(255, 184, 0, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}
.info-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.info-card h4::before {
    content: '';
    width: 3px;
    height: 14px;
    background: var(--amber);
    border-radius: 2px;
}
.info-item {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--border);
}
.info-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.info-item-icon {
    width: 36px;
    height: 36px;
    border-radius: 9px;
    background: linear-gradient(145deg, rgba(255, 184, 0, 0.15), rgba(255, 140, 0, 0.06));
    border: 1px solid rgba(255, 184, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.9rem;
}
.info-item-content {
    flex: 1;
    min-width: 0;
}
.info-item-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}
.info-item-value {
    font-size: 0.88rem;
    color: var(--text);
    font-weight: 500;
    word-break: break-all;
}
.info-item-value a {
    color: var(--amber);
    text-decoration: none;
    transition: color 0.3s;
}
.info-item-value a:hover {
    color: var(--orange);
}

/* QQ / 微信号码展示 */
.qq-wechat-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.qq-wechat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.4rem 0;
}
.qq-wechat-tag {
    font-size: 0.72rem;
    color: var(--amber);
    background: rgba(255, 184, 0, 0.1);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-weight: 500;
}
.qq-wechat-num {
    font-size: 0.9rem;
    font-family: 'SF Mono', 'Menlo', monospace;
    font-weight: 600;
    color: var(--orange);
    letter-spacing: 1.5px;
}

/* 席位卡 */
.seat-card {
    background: linear-gradient(160deg, rgba(59, 130, 246, 0.08), rgba(59, 130, 246, 0.02));
    border: 1.5px solid var(--amber);
    border-radius: 8px;
    padding: 1.8rem;
    position: relative;
    overflow: hidden;
}
.seat-card::before {
    content: '';
    position: absolute;
    top: -30px;
    right: -30px;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(255, 184, 0, 0.2), transparent 70%);
    pointer-events: none;
}
.seat-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
}
.seat-card h4::before {
    content: '';
    width: 3px;
    height: 14px;
    background: var(--amber);
    border-radius: 2px;
}
.seat-big-num {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.3rem;
    background: linear-gradient(135deg, var(--amber), var(--orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Sora', sans-serif;
}
.seat-big-num small {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-dim);
    -webkit-text-fill-color: var(--text-dim);
}
.seat-desc {
    font-size: 0.78rem;
    color: var(--text-dim);
    line-height: 1.6;
    margin: 1rem 0 1.2rem;
}
.seat-card .btn {
    width: 100%;
    justify-content: center;
}

@media (max-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .contact-sidebar {
        position: static;
    }
}
@media (max-width: 600px) {
    .contact-form-card {
        padding: 1.8rem;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .form-head h2 {
        font-size: 1.4rem;
    }
}

/* ============== 资源中心卡片 ============== */
.resource-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.resource-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px; padding: 1.5rem; transition: all 0.3s;
    display: flex; flex-direction: column; min-height: 280px;
}
.resource-card:hover { transform: translateY(-4px); border-color: var(--amber); }
.resource-cover {
    width: 100%; height: 140px; border-radius: 10px;
    background: var(--dark-grad);
    display: flex; align-items: center; justify-content: center;
    color: var(--amber); font-size: 2.2rem; margin-bottom: 1rem;
    position: relative; overflow: hidden;
    border: 1px solid var(--border);
}
.resource-cover::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, transparent 60%, var(--orange-dim) 100%);
}
.resource-cover-icon { position: relative; z-index: 1; }
.resource-meta {
    display: flex; gap: 0.5rem; margin-bottom: 0.6rem; flex-wrap: wrap;
}
.resource-tag {
    font-size: 0.65rem; letter-spacing: 1.5px;
    padding: 3px 8px; border: 1px solid var(--border);
    border-radius: 4px; color: var(--text-dim);
}
.resource-tag.amber { border-color: var(--amber); color: var(--amber); }
.resource-tag.blue { border-color: var(--tech-blue); color: var(--tech-blue); }
.resource-title {
    font-size: 1rem; font-weight: 600; color: var(--text);
    margin-bottom: 0.5rem; line-height: 1.4;
}
.resource-desc {
    font-size: 0.82rem; color: var(--text-dim); line-height: 1.6;
    flex: 1; margin-bottom: 0.8rem;
}
.resource-foot {
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 0.8rem; border-top: 1px solid var(--border);
    font-size: 0.75rem; color: var(--muted);
}
.resource-foot a { color: var(--orange); text-decoration: none; font-weight: 500; }
@media (max-width: 900px) { .resource-grid { grid-template-columns: 1fr; } }

/* ============== AI 体检落地页 ============== */
.diag-hero {
    position: relative; overflow: hidden;
    text-align: center; padding: 4rem 0 3rem;
    background: radial-gradient(ellipse at top, var(--tech-blue-dim) 0%, transparent 60%);
}
.diag-hero .hero-bg {
    position: absolute; inset: 0; z-index: 0; pointer-events: none;
    background:
        radial-gradient(ellipse 50% 45% at 60% 35%, rgba(0,200,180,0.10) 0%, transparent 55%),
        radial-gradient(ellipse 40% 35% at 35% 70%, rgba(0,160,220,0.07) 0%, transparent 50%),
        linear-gradient(160deg, #060e14 0%, #0a1820 35%, #081418 65%, #040c10 100%);
}
.diag-hero .hero-bg::before {
    content: ''; position: absolute; inset: 0;
    background:
        radial-gradient(circle at 30% 40%, rgba(0,200,200,0.04) 0%, transparent 2px),
        radial-gradient(circle at 70% 60%, rgba(0,180,220,0.03) 0%, transparent 2px),
        radial-gradient(circle at 50% 20%, rgba(0,220,180,0.03) 0%, transparent 1.5px);
}
.diag-hero .hero-bg::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(10,10,25,0.85) 0%, rgba(15,15,35,0.72) 50%, rgba(10,10,25,0.88) 100%);
}
.diag-hero .container { position: relative; z-index: 2; }
.diag-meters { display: flex; justify-content: center; gap: 1rem; margin: 2rem 0; flex-wrap: wrap; }
.diag-meter {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 100px; padding: 0.5rem 1.2rem;
    font-size: 0.78rem; color: var(--text-dim);
    display: inline-flex; align-items: center; gap: 0.5rem;
}
.diag-meter .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--tech-blue); }
.diag-meter.live .dot { background: #00E676; box-shadow: 0 0 8px #00E676; animation: pulse 1.5s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.diag-form {
    max-width: 720px; margin: 0 auto;
    background: var(--surface); border: 1px solid var(--border-strong);
    border-radius: 8px; padding: 2.5rem;
}
.diag-step-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .diag-step-row { grid-template-columns: 1fr; } }

.diag-progress {
    display: flex; gap: 0.4rem; margin-bottom: 2rem;
}
.diag-progress-item {
    flex: 1; height: 4px; background: var(--border); border-radius: 2px;
    transition: background 0.4s;
}
.diag-progress-item.active { background: var(--tech-blue); }
.diag-progress-item.done { background: var(--amber); }

.diag-output {
    background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
    border: 1px solid var(--tech-blue); border-radius: 8px;
    padding: 2rem; margin-top: 2rem;
}
.diag-score {
    text-align: center; padding: 1.5rem 0;
}
.diag-score .v {
    font-size: 3.5rem; font-weight: 700;
    background: linear-gradient(135deg, var(--tech-blue), var(--orange));
    -webkit-background-clip: text; background-clip: text; color: transparent;
    line-height: 1; margin-bottom: 0.4rem;
}
.diag-score .l { font-size: 0.85rem; color: var(--text-dim); letter-spacing: 2px; }
.diag-bars { margin: 1.5rem 0; }
.diag-bar {
    display: grid; grid-template-columns: 100px 1fr 50px;
    gap: 1rem; align-items: center; margin: 0.6rem 0;
    font-size: 0.82rem;
}
.diag-bar .lbl { color: var(--text-dim); }
.diag-bar .trk {
    height: 6px; background: var(--border); border-radius: 3px; overflow: hidden;
}
.diag-bar .fil {
    height: 100%; background: linear-gradient(90deg, var(--tech-blue), var(--orange));
    border-radius: 3px; transition: width 0.6s;
}
.diag-bar .val { text-align: right; color: var(--orange); font-weight: 600; }

/* ============== 4 层漏斗 ============== */
.funnel {
    display: grid; grid-template-columns: 1fr; gap: 1rem; max-width: 880px; margin: 0 auto;
}
.funnel-row {
    display: grid; grid-template-columns: 80px 1fr 120px 100px;
    gap: 1.5rem; align-items: center;
    padding: 1.2rem 1.8rem;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px; transition: all 0.3s;
}
.funnel-row:hover { border-color: var(--orange); transform: translateX(4px); }
.funnel-row.tier-free { border-left: 3px solid #6B7280; }
.funnel-row.tier-pro { border-left: 3px solid var(--tech-blue); }
.funnel-row.tier-vip { border-left: 3px solid var(--amber); }
.funnel-row.tier-ent { border-left: 3px solid var(--orange); }
.funnel-tier {
    font-family: 'Sora', sans-serif; font-weight: 700;
    font-size: 0.95rem; color: var(--text);
}
.funnel-name { font-size: 0.92rem; color: var(--text); font-weight: 500; }
.funnel-desc { font-size: 0.78rem; color: var(--text-dim); margin-top: 0.2rem; }
.funnel-price { font-size: 0.78rem; color: var(--amber); text-align: right; font-weight: 500; }
.funnel-cta { text-align: right; }
.funnel-cta .btn { padding: 0.5rem 1rem; font-size: 0.78rem; }
@media (max-width: 768px) {
    .funnel-row { grid-template-columns: 1fr; gap: 0.6rem; text-align: left; }
    .funnel-price, .funnel-cta { text-align: left; }
}


/* GEO 增强：权威参考 + 信息图样式 */
.ref-link { display:flex; flex-direction:column; align-items:center; gap:0.4rem; padding:1.2rem 0.5rem; background:var(--surface); border:1px solid var(--border); border-radius:8px; text-decoration:none; transition:all 0.3s; }
.ref-link:hover { border-color:var(--orange); transform:translateY(-3px); }
.ref-icon { width:40px; height:40px; border-radius:8px; background:var(--orange-dim); color:var(--orange); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:1rem; }
.ref-name { font-size:0.85rem; font-weight:600; color:var(--text); }
.ref-desc { font-size:0.7rem; color:var(--text-dim); }
@media (max-width:768px) {
  section .ref-link { grid-column: span 2; }
}

/* ============== 头部计划 · 波浪动态效果 ============== */
.head-program-section {
    position: relative;
    padding: 6rem 0;
    overflow: hidden;
    background: linear-gradient(180deg, #0A0D18 0%, #121829 50%, #0A0D18 100%);
}
.head-program-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}
.head-program-bg .wave {
    position: absolute;
    left: -20%;
    right: -20%;
    height: 45%;
    background-repeat: repeat-x;
    background-size: 50% 100%;
    opacity: 0.2;
}
.head-program-bg .wave1 {
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 300' preserveAspectRatio='none'%3E%3Cpath d='M0,150 C150,50 300,250 500,150 C700,50 900,250 1200,150 L1200,300 L0,300 Z' fill='%23F97316'/%3E%3C/svg%3E");
    animation: waveMove1 6s ease-in-out infinite alternate;
}
.head-program-bg .wave2 {
    bottom: 8%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 300' preserveAspectRatio='none'%3E%3Cpath d='M0,180 C200,80 400,260 650,180 C900,100 1050,260 1200,180 L1200,300 L0,300 Z' fill='%233B82F6'/%3E%3C/svg%3E");
    animation: waveMove2 9s ease-in-out infinite alternate;
    opacity: 0.18;
}
.head-program-bg .wave3 {
    bottom: 15%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 300' preserveAspectRatio='none'%3E%3Cpath d='M0,120 C100,200 250,60 450,150 C650,240 850,80 1200,120 L1200,300 L0,300 Z' fill='%23FB923C'/%3E%3C/svg%3E");
    animation: waveMove3 7s ease-in-out infinite alternate;
    opacity: 0.15;
}
@keyframes waveMove1 {
    0%   { transform: translateX(0) scaleY(0.7); }
    50%  { transform: translateX(-8%) scaleY(1.2); }
    100% { transform: translateX(-12%) scaleY(0.9); }
}
@keyframes waveMove2 {
    0%   { transform: translateX(-8%) scaleY(0.8); }
    50%  { transform: translateX(5%) scaleY(1.3); }
    100% { transform: translateX(-3%) scaleY(1); }
}
@keyframes waveMove3 {
    0%   { transform: translateX(3%) scaleY(1.1); }
    50%  { transform: translateX(-10%) scaleY(0.7); }
    100% { transform: translateX(6%) scaleY(1.2); }
}
.head-program-bg .glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
}
.head-program-bg .glow-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,85,0,0.6) 0%, transparent 70%);
    top: -100px;
    left: 10%;
    animation: glowFloat1 6s ease-in-out infinite alternate;
}
.head-program-bg .glow-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255,184,0,0.4) 0%, transparent 70%);
    bottom: -150px;
    right: 5%;
    animation: glowFloat2 8s ease-in-out infinite alternate;
}
@keyframes glowFloat1 {
    0%   { transform: translate(0, 0) scale(1); opacity: 0.25; }
    100% { transform: translate(30px, 20px) scale(1.15); opacity: 0.4; }
}
@keyframes glowFloat2 {
    0%   { transform: translate(0, 0) scale(1); opacity: 0.2; }
    100% { transform: translate(-40px, -30px) scale(1.2); opacity: 0.35; }
}
.head-program-bg .particles {
    position: absolute;
    inset: 0;
}
.head-program-bg .particles span {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--amber);
    border-radius: 50%;
    opacity: 0;
    box-shadow: 0 0 8px var(--amber);
    animation: particleFloat 6s ease-in-out infinite;
}
.head-program-bg .particles span:nth-child(1)  { left: 10%;  top: 20%; animation-delay: 0s; }
.head-program-bg .particles span:nth-child(2)  { left: 25%;  top: 60%; animation-delay: 0.8s; }
.head-program-bg .particles span:nth-child(3)  { left: 40%;  top: 30%; animation-delay: 1.5s; }
.head-program-bg .particles span:nth-child(4)  { left: 55%;  top: 70%; animation-delay: 2.2s; }
.head-program-bg .particles span:nth-child(5)  { left: 70%;  top: 25%; animation-delay: 3s; }
.head-program-bg .particles span:nth-child(6)  { left: 85%;  top: 55%; animation-delay: 3.8s; }
.head-program-bg .particles span:nth-child(7)  { left: 15%;  top: 80%; animation-delay: 4.5s; }
.head-program-bg .particles span:nth-child(8)  { left: 60%;  top: 15%; animation-delay: 1s; }
.head-program-bg .particles span:nth-child(9)  { left: 80%;  top: 85%; animation-delay: 2.5s; }
.head-program-bg .particles span:nth-child(10) { left: 35%;  top: 45%; animation-delay: 4s; }
.head-program-bg .particles span:nth-child(11) { left: 50%;  top: 90%; animation-delay: 0.5s; }
.head-program-bg .particles span:nth-child(12) { left: 90%;  top: 40%; animation-delay: 3.2s; }
.head-program-bg .particles span:nth-child(13) { left: 5%;   top: 50%; animation-delay: 1.8s; }
.head-program-bg .particles span:nth-child(14) { left: 75%;  top: 10%; animation-delay: 5s; }
.head-program-bg .particles span:nth-child(15) { left: 45%;  top: 65%; animation-delay: 2.8s; }
@keyframes particleFloat {
    0%   { opacity: 0; transform: translateY(30px) scale(0.5); }
    20%  { opacity: 0.8; }
    80%  { opacity: 0.6; }
    100% { opacity: 0; transform: translateY(-40px) scale(1); }
}
@media (max-width: 768px) {
    .head-program-section { padding: 4rem 0; }
    .head-program-bg .wave { height: 120px; }
    .head-program-bg .glow-1 { width: 250px; height: 250px; }
    .head-program-bg .glow-2 { width: 300px; height: 300px; }
}