/* ==========================================================================
   至悦 BEYOND CONSULTING · 官网首页设计系统 v3
   墨紫 Ink × 香槟金 Champagne Gold · 编辑级排版 Editorial Layout
   ========================================================================== */

:root {
  --ink: #16102b;
  --ink-2: #1e1540;
  --ink-3: #251a4d;
  --paper: #faf7f2;
  --paper-2: #f3eee6;
  --gold: #c2a15e;
  --gold-2: #e0c996;
  --gold-deep: #a5813d;
  --violet: #6c4ba6;
  --violet-soft: #9b7fd0;
  --text-main: #241d33;
  --text-muted: #6e6680;
  --text-inv: #f4f0e8;
  --text-inv-muted: #b3aac6;
  --hairline: rgba(22, 16, 43, 0.12);
  --hairline-inv: rgba(244, 240, 232, 0.16);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--text-main);
  background: var(--paper);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--gold); color: var(--ink); }

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}

/* ---------- 通用排版 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--gold-deep);
}
.eyebrow::before {
  content: "";
  width: 40px;
  height: 1px;
  background: var(--gold);
  flex: none;
}
.eyebrow.inv { color: var(--gold-2); }

.display-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.28;
  letter-spacing: 0.02em;
}
.display-title em {
  font-style: normal;
  color: var(--gold-deep);
}
.display-title.inv { color: var(--text-inv); }
.display-title.inv em { color: var(--gold-2); }

.section-lead {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 640px;
}
.section-lead.inv { color: var(--text-inv-muted); }

/* ---------- 滚动渐显 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.12s; }
.reveal.d2 { transition-delay: 0.24s; }
.reveal.d3 { transition-delay: 0.36s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(22, 16, 43, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--hairline-inv);
}
.header-inner {
  width: min(1320px, 94vw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand img { height: 44px; width: auto; }
.brand-text .brand-name {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--text-inv);
  letter-spacing: 0.12em;
  line-height: 1.2;
}
.brand-text .brand-en {
  font-size: 9.5px;
  letter-spacing: 0.3em;
  color: var(--gold-2);
  text-transform: uppercase;
  margin-top: 3px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 38px;
}
.nav-links a {
  font-size: 14px;
  letter-spacing: 0.14em;
  color: var(--text-inv-muted);
  position: relative;
  padding: 4px 0;
  transition: color 0.3s;
}
.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}
.nav-links a:not(.nav-cta):hover { color: var(--text-inv); }
.nav-links a:not(.nav-cta):hover::after {
  transform: scaleX(1);
  transform-origin: left;
}
.nav-links a.active { color: var(--gold-2); }
.nav-cta {
  border: 1px solid var(--gold);
  color: var(--gold-2) !important;
  padding: 10px 26px;
  border-radius: 999px;
  transition: background 0.35s, color 0.35s !important;
}
.nav-cta:hover { background: var(--gold); color: var(--ink) !important; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; }
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-inv);
  margin: 5px 0;
  transition: 0.3s;
}

/* ==========================================================================
   HERO —— 墨紫全屏开场
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    radial-gradient(1100px 620px at 82% 18%, rgba(108, 75, 166, 0.32), transparent 60%),
    radial-gradient(760px 520px at 8% 92%, rgba(194, 161, 94, 0.12), transparent 65%),
    linear-gradient(158deg, #171030 0%, #16102b 42%, #1d1244 100%);
  color: var(--text-inv);
  overflow: hidden;
  padding: 140px 0 90px;
}
/* 巨型水印「悦」 */
.hero-watermark {
  position: absolute;
  right: -4vw;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--serif);
  font-size: clamp(320px, 44vw, 640px);
  font-weight: 600;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(224, 201, 150, 0.14);
  pointer-events: none;
  user-select: none;
}
/* 发丝网格线 */
.hero-gridline {
  position: absolute;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(244, 240, 232, 0.07) 30%, rgba(244, 240, 232, 0.07) 70%, transparent);
  pointer-events: none;
}
.hero-gridline.g1 { left: 38%; }
.hero-gridline.g2 { left: 62%; }

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(1200px, 92vw);
  margin: 0 auto;
  max-width: 900px;
}
.hero .eyebrow { margin-bottom: 34px; }
.hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(42px, 6.2vw, 82px);
  line-height: 1.22;
  letter-spacing: 0.02em;
}
.hero h1 .gold {
  color: var(--gold-2);
  position: relative;
  white-space: nowrap;
}
.hero h1 .gold::after {
  content: "";
  position: absolute;
  left: 2%;
  right: 2%;
  bottom: 6px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.hero-sub {
  margin-top: 34px;
  font-size: 17px;
  line-height: 2;
  color: var(--text-inv-muted);
  max-width: 600px;
}
.hero-actions {
  margin-top: 48px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 40px;
  font-size: 15px;
  letter-spacing: 0.12em;
  border-radius: 999px;
  transition: all 0.35s var(--ease);
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-gold {
  background: linear-gradient(120deg, var(--gold-2), var(--gold) 55%, var(--gold-deep));
  color: var(--ink);
  font-weight: 600;
  box-shadow: 0 12px 34px rgba(194, 161, 94, 0.28);
}
.btn-gold:hover { transform: translateY(-3px); box-shadow: 0 18px 44px rgba(194, 161, 94, 0.4); }
.btn-ghost {
  border-color: rgba(244, 240, 232, 0.35);
  color: var(--text-inv);
}
.btn-ghost:hover { border-color: var(--gold-2); color: var(--gold-2); }
.btn-outline {
  border-color: var(--ink);
  color: var(--ink);
}
.btn-outline:hover { background: var(--ink); color: var(--gold-2); }

/* Hero 底部数据行 */
.hero-metrics {
  position: relative;
  z-index: 2;
  margin-top: 96px;
  padding-top: 34px;
  border-top: 1px solid var(--hairline-inv);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  width: min(1200px, 92vw);
  margin-left: auto;
  margin-right: auto;
}
.hero-metric .num {
  font-family: var(--serif);
  font-size: clamp(30px, 3.4vw, 46px);
  font-weight: 600;
  color: var(--gold-2);
  line-height: 1.1;
}
.hero-metric .num small { font-size: 0.55em; margin-left: 2px; }
.hero-metric .lab {
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--text-inv-muted);
}

/* ==========================================================================
   信任条
   ========================================================================== */
.trust-bar {
  background: var(--ink);
  color: var(--text-inv-muted);
  padding: 30px 0;
  border-bottom: 1px solid var(--hairline-inv);
}
.trust-inner {
  width: min(1200px, 92vw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 44px;
  overflow-x: auto;
  scrollbar-width: none;
}
.trust-inner::-webkit-scrollbar { display: none; }
.trust-label {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold-2);
}
.trust-logo {
  flex: none;
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: 0.14em;
  color: rgba(244, 240, 232, 0.55);
  transition: color 0.3s;
  white-space: nowrap;
}
.trust-logo:hover { color: var(--gold-2); }
.trust-sep { flex: none; width: 1px; height: 14px; background: var(--hairline-inv); }

/* ==========================================================================
   数字统计带（McKinsey 式）
   ========================================================================== */
.stats-band {
  background: var(--paper);
  padding: 110px 0 100px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat-cell {
  padding: 10px 36px;
  border-left: 1px solid var(--hairline);
}
.stat-cell:first-child { border-left: none; padding-left: 0; }
.stat-cell .num {
  font-family: var(--serif);
  font-size: clamp(44px, 5vw, 68px);
  font-weight: 600;
  line-height: 1;
  color: var(--ink);
}
.stat-cell .num sup {
  font-size: 0.42em;
  color: var(--gold-deep);
  margin-left: 4px;
  font-family: var(--sans);
  font-weight: 500;
}
.stat-cell .lab {
  margin-top: 16px;
  font-size: 13.5px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}

/* ==========================================================================
   01 定位 —— 编辑式左右分栏
   ========================================================================== */
.positioning {
  background: var(--paper);
  padding: 30px 0 130px;
}
.pos-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 90px;
  align-items: start;
}
.pos-left .eyebrow { margin-bottom: 30px; }
.pos-quote {
  margin-top: 44px;
  padding-left: 34px;
  border-left: 2px solid var(--gold);
  font-family: var(--serif);
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.7;
  color: var(--ink);
}
.pos-quote cite {
  display: block;
  margin-top: 18px;
  font-family: var(--sans);
  font-style: normal;
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--text-muted);
}
.pos-body { margin-top: 36px; }
.pos-body p {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 560px;
}
.pos-body p + p { margin-top: 18px; }

.pos-right {
  border-top: 2px solid var(--ink);
}
.pos-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 26px 4px;
  border-bottom: 1px solid var(--hairline);
}
.pos-row .num {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 600;
  color: var(--ink);
}
.pos-row .num sup { font-size: 0.5em; color: var(--gold-deep); }
.pos-row .lab { font-size: 13.5px; letter-spacing: 0.14em; color: var(--text-muted); }

/* ==========================================================================
   02 服务 —— 编号式行列表（非卡片）
   ========================================================================== */
.services-sec {
  background: var(--paper-2);
  padding: 130px 0;
  border-top: 1px solid var(--hairline);
}
.sec-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 70px;
  flex-wrap: wrap;
}
.sec-head .eyebrow { margin-bottom: 22px; }

.service-rows { border-top: 1px solid rgba(22, 16, 43, 0.2); }
.service-row {
  display: grid;
  grid-template-columns: 110px 1.15fr 1.5fr auto;
  gap: 40px;
  align-items: center;
  padding: 46px 8px;
  border-bottom: 1px solid rgba(22, 16, 43, 0.2);
  position: relative;
  transition: background 0.4s var(--ease), padding 0.4s var(--ease);
}
.service-row::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 3px; height: 100%;
  background: linear-gradient(var(--gold-2), var(--gold-deep));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.45s var(--ease);
}
.service-row:hover { background: rgba(255, 255, 255, 0.55); }
.service-row:hover::before { transform: scaleY(1); }
.sr-idx {
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.2em;
  color: var(--gold-deep);
}
.sr-title {
  font-family: var(--serif);
  font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
}
.sr-title small {
  display: block;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 8px;
  font-weight: 500;
}
.sr-desc {
  font-size: 15px;
  color: var(--text-muted);
}
.sr-desc li {
  display: inline-block;
  margin: 4px 14px 0 0;
  font-size: 13.5px;
  padding-left: 14px;
  position: relative;
}
.sr-desc li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.72em;
  width: 6px; height: 1px;
  background: var(--gold);
}
.sr-arrow {
  font-family: var(--serif);
  font-size: 26px;
  color: var(--ink);
  transition: transform 0.35s var(--ease), color 0.35s;
}
.service-row:hover .sr-arrow { transform: translateX(8px); color: var(--gold-deep); }

/* ==========================================================================
   03 PEAK 模型 —— 深色 + 描边大字母
   ========================================================================== */
.peak-sec {
  background:
    radial-gradient(900px 500px at 15% 0%, rgba(108, 75, 166, 0.25), transparent 60%),
    linear-gradient(180deg, #171030, #16102b);
  color: var(--text-inv);
  padding: 140px 0 130px;
  overflow: hidden;
}
.peak-sec .sec-head { margin-bottom: 80px; }
.peak-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--hairline-inv);
  border: 1px solid var(--hairline-inv);
}
.peak-cell {
  background: var(--ink);
  padding: 46px 34px 50px;
  position: relative;
  transition: background 0.45s;
}
.peak-cell:hover { background: var(--ink-3); }
.peak-letter {
  font-family: var(--serif);
  font-size: 96px;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--gold);
  transition: color 0.45s;
}
.peak-cell:hover .peak-letter { color: var(--gold); }
.peak-step {
  margin-top: 30px;
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold-2);
}
.peak-cell h3 {
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 600;
  margin-top: 12px;
  color: var(--text-inv);
}
.peak-cell p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-inv-muted);
}

/* ==========================================================================
   04 案例 —— 大数字行
   ========================================================================== */
.cases-sec {
  background: var(--paper);
  padding: 130px 0;
}
.case-rows { border-top: 1px solid rgba(22, 16, 43, 0.2); }
.case-row {
  display: grid;
  grid-template-columns: 280px 1fr auto;
  gap: 50px;
  align-items: center;
  padding: 52px 8px;
  border-bottom: 1px solid rgba(22, 16, 43, 0.2);
  transition: background 0.4s, padding-left 0.4s var(--ease);
}
.case-row:hover { background: #fff; padding-left: 22px; }
.cr-metric .num {
  font-family: var(--serif);
  font-size: clamp(44px, 4.6vw, 62px);
  font-weight: 600;
  line-height: 1;
  color: var(--gold-deep);
}
.cr-metric .lab {
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--text-muted);
}
.cr-body h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
}
.cr-body p {
  margin-top: 12px;
  font-size: 15px;
  color: var(--text-muted);
  max-width: 560px;
}
.cr-tag {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  border: 1px solid var(--hairline);
  padding: 8px 18px;
  border-radius: 999px;
  white-space: nowrap;
}

/* ==========================================================================
   05 MSM-96
   ========================================================================== */
.msm-sec {
  background: var(--paper-2);
  border-top: 1px solid var(--hairline);
  padding: 130px 0;
}
.msm-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 90px;
  align-items: center;
}
.msm-features { margin-top: 40px; border-top: 1px solid rgba(22,16,43,0.18); }
.msm-features li {
  display: flex;
  gap: 20px;
  padding: 20px 4px;
  border-bottom: 1px solid rgba(22, 16, 43, 0.18);
  font-size: 15.5px;
  color: var(--text-main);
}
.msm-features li b {
  font-family: var(--serif);
  color: var(--gold-deep);
  font-weight: 600;
  flex: none;
  width: 72px;
}
.msm-panel {
  background: linear-gradient(160deg, var(--ink-2), var(--ink));
  border-radius: 6px;
  padding: 56px 50px;
  color: var(--text-inv);
  position: relative;
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(22, 16, 43, 0.28);
}
.msm-panel::before {
  content: "96";
  position: absolute;
  right: -20px;
  top: -50px;
  font-family: var(--serif);
  font-size: 260px;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px rgba(224, 201, 150, 0.18);
  line-height: 1;
}
.msm-badge {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 600;
  color: var(--gold-2);
}
.msm-badge span {
  display: block;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--text-inv-muted);
  margin-top: 8px;
  text-transform: uppercase;
}
.msm-panel p.msm-desc {
  margin-top: 26px;
  font-size: 14.5px;
  color: var(--text-inv-muted);
  position: relative;
}
.dim-tags {
  margin-top: 30px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  position: relative;
}
.dim-tag {
  border: 1px solid var(--hairline-inv);
  padding: 12px 16px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-inv);
  border-radius: 3px;
  transition: border-color 0.3s, color 0.3s;
}
.dim-tag:hover { border-color: var(--gold); color: var(--gold-2); }

/* ==========================================================================
   CTA
   ========================================================================== */
.cta-sec {
  position: relative;
  background:
    radial-gradient(800px 400px at 50% 120%, rgba(194, 161, 94, 0.22), transparent 60%),
    linear-gradient(180deg, #171030, #16102b);
  color: var(--text-inv);
  text-align: center;
  padding: 150px 0 140px;
  overflow: hidden;
}
.cta-sec h2 {
  font-family: var(--serif);
  font-size: clamp(34px, 4.6vw, 60px);
  font-weight: 600;
  line-height: 1.3;
}
.cta-sec h2 em { font-style: normal; color: var(--gold-2); }
.cta-sec p {
  margin-top: 26px;
  color: var(--text-inv-muted);
  font-size: 16.5px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.cta-sec .btn { margin-top: 46px; }
.cta-contacts {
  margin-top: 56px;
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
}
.cta-contact {
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--text-inv-muted);
}
.cta-contact b {
  display: block;
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold-2);
  margin-bottom: 10px;
  font-weight: 600;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: #100b20;
  color: var(--text-inv-muted);
  padding: 80px 0 40px;
  border-top: 1px solid var(--hairline-inv);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 60px;
}
.footer-brand .brand-name {
  font-family: var(--serif);
  font-size: 30px;
  color: var(--text-inv);
  letter-spacing: 0.14em;
}
.footer-brand .brand-en {
  font-size: 10px;
  letter-spacing: 0.34em;
  color: var(--gold-2);
  margin-top: 6px;
  text-transform: uppercase;
}
.footer-brand p {
  margin-top: 26px;
  font-size: 14px;
  line-height: 2;
  max-width: 340px;
}
.footer-col h4 {
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold-2);
  margin-bottom: 24px;
  font-weight: 600;
}
.footer-col ul li { margin-bottom: 14px; }
.footer-col ul a {
  font-size: 14.5px;
  color: var(--text-inv-muted);
  transition: color 0.3s;
}
.footer-col ul a:hover { color: var(--gold-2); }
.footer-mini-qr {
  margin-top: 22px;
  border: 1px solid var(--hairline-inv);
  border-radius: 4px;
  padding: 14px 16px;
  font-size: 12.5px;
  line-height: 1.9;
  text-align: center;
  letter-spacing: 0.06em;
}
.footer-bottom {
  margin-top: 70px;
  padding-top: 26px;
  border-top: 1px solid var(--hairline-inv);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: rgba(244, 240, 232, 0.4);
}

/* ==========================================================================
   子页面通用组件 v3 设计系统
   ========================================================================== */

/* ---------- 页面级 Hero（紧凑深色） ---------- */
.page-hero {
  position: relative;
  padding: 190px 0 110px;
  background:
    radial-gradient(800px 420px at 85% 10%, rgba(108, 75, 166, 0.3), transparent 60%),
    radial-gradient(600px 380px at 5% 95%, rgba(194, 161, 94, 0.1), transparent 65%),
    linear-gradient(158deg, #171030 0%, #16102b 55%, #1d1244 100%);
  color: var(--text-inv);
  overflow: hidden;
}
.page-hero::after {
  content: attr(data-mark);
  position: absolute;
  right: -2vw;
  bottom: -14vw;
  font-family: var(--serif);
  font-size: 24vw;
  font-weight: 600;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(224, 201, 150, 0.12);
  pointer-events: none;
  user-select: none;
}
.page-hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(32px, 4.4vw, 54px);
  line-height: 1.32;
  letter-spacing: 0.02em;
  margin-top: 26px;
  position: relative;
  z-index: 1;
}
.page-hero h1 em { font-style: normal; color: var(--gold-2); }
.page-hero p {
  position: relative;
  z-index: 1;
  margin-top: 26px;
  font-size: 16.5px;
  line-height: 2;
  color: var(--text-inv-muted);
  max-width: 640px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12.5px;
  letter-spacing: 0.18em;
  color: var(--text-inv-muted);
}
.breadcrumb a { color: var(--gold-2); transition: opacity 0.3s; }
.breadcrumb a:hover { opacity: 0.75; }

/* ---------- 通用分节 ---------- */
.section { padding: 110px 0; }
.section-light { background: var(--paper); }
.section-paper2 { background: var(--paper-2); border-top: 1px solid var(--hairline); }
.text-center { text-align: center; }
.sec-head-left { margin-bottom: 60px; }
.sec-head-left .eyebrow { margin-bottom: 20px; }
.sec-head-left .section-lead { margin-top: 20px; }

/* ---------- 价值卡（编号式，无图标） ---------- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  margin-top: 60px;
}
.value-cell {
  background: var(--paper);
  padding: 44px 34px;
  transition: background 0.4s;
}
.value-cell:hover { background: #fff; }
.value-cell .num {
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 0.2em;
  color: var(--gold-deep);
}
.value-cell h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  margin-top: 20px;
  color: var(--ink);
}
.value-cell p {
  margin-top: 14px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-muted);
}

/* ---------- 产品卡（服务页） ---------- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
  margin-top: 60px;
}
.products-grid.two-col { grid-template-columns: repeat(2, 1fr); }
.product-card {
  background: #fff;
  border: 1px solid var(--hairline);
  padding: 46px 40px;
  display: flex;
  flex-direction: column;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s;
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--gold-2), var(--gold-deep));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 54px rgba(22, 16, 43, 0.12);
  border-color: transparent;
}
.product-card:hover::before { transform: scaleX(1); }
.product-card .product-tag {
  font-size: 11.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold-deep);
  font-weight: 600;
}
.product-card h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  margin-top: 16px;
  color: var(--ink);
  line-height: 1.45;
}
.product-card > p {
  margin-top: 16px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-muted);
}
.product-features {
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--hairline);
  flex: 1;
}
.product-features li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-main);
  margin-bottom: 10px;
}
.product-features li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.7em;
  width: 8px; height: 1px;
  background: var(--gold);
}

/* ---------- 时间线（关于页） ---------- */
.timeline {
  margin-top: 60px;
  position: relative;
  padding-left: 40px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 0; top: 8px; bottom: 8px;
  width: 1px;
  background: linear-gradient(var(--gold), rgba(194, 161, 94, 0.15));
}
.timeline-item {
  position: relative;
  padding: 0 0 46px 34px;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -45px;
  top: 10px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--gold);
}
.timeline-item.milestone::before { background: var(--gold); }
.timeline-year {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 600;
  color: var(--gold-deep);
  line-height: 1;
}
.timeline-item h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin-top: 12px;
}
.timeline-item p {
  margin-top: 10px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-muted);
  max-width: 620px;
}

/* ---------- FAQ 手风琴 ---------- */
.faq-list { margin-top: 50px; border-top: 1px solid var(--hairline); }
.faq-item { border-bottom: 1px solid var(--hairline); }
.faq-question {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  padding: 30px 4px;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  transition: color 0.3s;
}
.faq-question:hover { color: var(--gold-deep); }
.faq-question::after {
  content: "+";
  font-family: var(--sans);
  font-size: 24px;
  font-weight: 300;
  color: var(--gold-deep);
  flex: none;
  transition: transform 0.35s var(--ease);
}
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.45s var(--ease);
}
.faq-answer-inner {
  padding: 0 4px 32px;
  font-size: 15.5px;
  line-height: 2;
  color: var(--text-muted);
  max-width: 780px;
}

/* ---------- 联系页 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 80px;
  align-items: start;
}
.form-group { margin-bottom: 26px; }
.form-group label {
  display: block;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--text-main);
  margin-bottom: 10px;
  font-weight: 600;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 15px 18px;
  border: 1px solid var(--hairline);
  background: #fff;
  font-family: var(--sans);
  font-size: 15px;
  color: var(--text-main);
  transition: border-color 0.3s, box-shadow 0.3s;
  border-radius: 2px;
  appearance: none;
}
.form-group textarea { min-height: 130px; resize: vertical; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(194, 161, 94, 0.15);
}
.contact-side h3 {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  color: var(--ink);
}
.contact-side > p { margin-top: 12px; font-size: 14.5px; color: var(--text-muted); }
.qr-list { margin-top: 28px; display: grid; gap: 22px; }
.qr-item {
  display: flex;
  gap: 20px;
  align-items: center;
  border: 1px solid var(--hairline);
  background: #fff;
  padding: 18px;
  transition: border-color 0.3s;
}
.qr-item:hover { border-color: var(--gold); }
.qr-item img {
  width: 96px; height: 96px;
  object-fit: cover;
  border-radius: 2px;
  flex: none;
}
.qr-item h4 {
  font-family: var(--serif);
  font-size: 16.5px;
  font-weight: 600;
  color: var(--ink);
}
.qr-item p { margin-top: 6px; font-size: 13px; color: var(--text-muted); line-height: 1.7; }
.contact-meta-block {
  margin-top: 36px;
  padding-top: 30px;
  border-top: 1px solid var(--hairline);
}
.contact-meta-block h3 { margin-bottom: 10px; }
.contact-meta-block .big-mail {
  font-size: 18px;
  font-weight: 600;
  color: var(--gold-deep);
  word-break: break-all;
}

/* ---------- 洞察列表 ---------- */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
}
.insight-card a {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--hairline);
  background: #fff;
  height: 100%;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.insight-card a:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 54px rgba(22, 16, 43, 0.12);
}
.insight-thumb {
  height: 170px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--gold-2);
  background:
    radial-gradient(500px 200px at 80% 20%, rgba(108, 75, 166, 0.4), transparent 60%),
    linear-gradient(150deg, #1e1540, #16102b);
}
.insight-body { padding: 30px 30px 34px; }
.insight-meta {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-deep);
}
.insight-body h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  margin-top: 14px;
}
.insight-body p {
  margin-top: 12px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-muted);
}

/* ---------- 文章页 ---------- */
.article-page { padding: 60px 0 130px; }
.article-wrap { max-width: 780px; margin: 0 auto; }
.article-header {
  padding: 60px 0 44px;
  border-bottom: 1px solid var(--hairline);
}
.article-header h1 {
  font-family: var(--serif);
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
  margin-top: 20px;
}
.article-meta {
  margin-top: 22px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}
.article-content { padding-top: 46px; }
.article-content h2 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--ink);
  margin: 52px 0 22px;
  padding-left: 18px;
  border-left: 3px solid var(--gold);
}
.article-content p {
  font-size: 16.5px;
  line-height: 2.15;
  color: #3a3350;
  margin-bottom: 20px;
}
.article-content strong { color: var(--ink); }
.article-content ul {
  margin: 0 0 20px;
  padding-left: 4px;
  list-style: none;
}
.article-content ul li {
  position: relative;
  padding-left: 22px;
  font-size: 16px;
  line-height: 2.05;
  color: #3a3350;
  margin-bottom: 6px;
}
.article-content ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.95em;
  width: 10px; height: 1px;
  background: var(--gold);
}
.article-cta {
  margin-top: 66px;
  padding: 46px 44px;
  background:
    radial-gradient(500px 220px at 90% 0%, rgba(108, 75, 166, 0.35), transparent 60%),
    linear-gradient(150deg, #1e1540, #16102b);
  color: var(--text-inv);
  text-align: center;
}
.article-cta p {
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--text-inv-muted);
  margin-bottom: 28px;
}
.article-nav {
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.article-nav a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.3s;
}
.article-nav a:hover { color: var(--gold-deep); }

/* ---------- 精彩瞬间（照片视频占位） ---------- */
.moment-cat { margin-bottom: 90px; }
.moment-cat-head {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 36px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--hairline);
}
.moment-cat-head h2 {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 600;
  color: var(--ink);
}
.moment-cat-head span {
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold-deep);
}
.moment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.moment-tile {
  position: relative;
  aspect-ratio: 4 / 3;
  border: 1.5px dashed rgba(22, 16, 43, 0.25);
  background:
    repeating-linear-gradient(45deg, rgba(22, 16, 43, 0.02) 0 12px, transparent 12px 24px),
    var(--paper-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  transition: border-color 0.3s, background 0.3s;
  overflow: hidden;
}
.moment-tile:hover { border-color: var(--gold); }
.moment-tile img,
.moment-tile video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.moment-tile .ph-icon {
  font-size: 34px;
  color: rgba(22, 16, 43, 0.28);
  font-family: var(--serif);
}
.moment-tile .ph-label {
  font-size: 13.5px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-align: center;
  padding: 0 20px;
  line-height: 1.7;
}
.moment-tile .ph-badge {
  position: absolute;
  top: 14px; left: 14px;
  z-index: 2;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold-deep);
  background: rgba(250, 247, 242, 0.92);
  border: 1px solid var(--gold);
  padding: 5px 12px;
  border-radius: 999px;
}
.moment-tile.feature { grid-column: span 2; aspect-ratio: 8 / 3; }
.moment-note {
  margin-top: 40px;
  padding: 26px 30px;
  border: 1px solid var(--gold);
  background: rgba(194, 161, 94, 0.07);
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-main);
}
.moment-note b { color: var(--gold-deep); }

/* ---------- 隐私/条款正文 ---------- */
.legal-content h2 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  margin: 40px 0 16px;
}
.legal-content p {
  font-size: 15.5px;
  line-height: 2;
  color: var(--text-muted);
  margin-bottom: 14px;
}

/* ---------- 客户行业标签 ---------- */
.client-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-top: 44px;
}
.client-cat {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--text-main);
  border: 1px solid var(--hairline);
  padding: 9px 22px;
  border-radius: 999px;
  transition: border-color 0.3s, color 0.3s;
}
.client-cat:hover { border-color: var(--gold); color: var(--gold-deep); }
.client-wall {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  margin-top: 44px;
}
.client-wall span {
  background: #fff;
  padding: 30px 16px;
  text-align: center;
  font-family: var(--serif);
  font-size: 16.5px;
  letter-spacing: 0.12em;
  color: var(--ink);
  transition: background 0.3s, color 0.3s;
}
.client-wall span:hover { background: var(--ink); color: var(--gold-2); }

/* ---------- 响应式补充 ---------- */
@media (max-width: 1024px) {
  .values-grid { grid-template-columns: 1fr 1fr; }
  .products-grid, .products-grid.two-col { grid-template-columns: 1fr 1fr; }
  .insights-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 60px; }
  .client-wall { grid-template-columns: 1fr 1fr; }
  .moment-grid { grid-template-columns: 1fr 1fr; }
  .moment-tile.feature { grid-column: span 2; }
}
@media (max-width: 768px) {
  .section { padding: 80px 0; }
  .page-hero { padding: 150px 0 80px; }
  .values-grid, .products-grid, .products-grid.two-col, .insights-grid { grid-template-columns: 1fr; }
  .moment-grid { grid-template-columns: 1fr; }
  .moment-tile.feature { grid-column: span 1; aspect-ratio: 4 / 3; }
  .faq-question { font-size: 17px; }
}

@media (max-width: 1024px) {
  .pos-grid, .msm-grid { grid-template-columns: 1fr; gap: 60px; }
  .peak-grid { grid-template-columns: 1fr 1fr; }
  .service-row { grid-template-columns: 80px 1fr auto; }
  .sr-desc { grid-column: 2 / 4; }
  .case-row { grid-template-columns: 220px 1fr; }
  .cr-tag { display: none; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 40px 0; }
  .stat-cell:nth-child(3) { border-left: none; padding-left: 0; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 44px; }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed;
    inset: 0;
    background: rgba(22, 16, 43, 0.97);
    flex-direction: column;
    justify-content: center;
    gap: 34px;
    transform: translateY(-100%);
    transition: transform 0.45s var(--ease);
    z-index: 99;
  }
  .nav-links.open { transform: none; }
  .nav-links a { font-size: 18px; }
  .hero { padding: 120px 0 70px; }
  .hero-watermark { font-size: 70vw; right: -20vw; }
  .hero-metrics { grid-template-columns: 1fr; gap: 26px; margin-top: 60px; }
  .service-row { grid-template-columns: 1fr; gap: 16px; padding: 36px 4px; }
  .sr-desc { grid-column: auto; }
  .sr-arrow { display: none; }
  .case-row { grid-template-columns: 1fr; gap: 20px; padding: 40px 4px; }
  .peak-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-cell { border-left: none; padding-left: 0; }
  .sec-head { margin-bottom: 46px; }
  .footer-inner { grid-template-columns: 1fr; }
  .cta-contacts { gap: 34px; }
  .dim-tags { grid-template-columns: 1fr; }
  .msm-panel { padding: 40px 30px; }
}