/* ============================================================
   国鼎财税顾问官网 · 「鼎 · 东方财智」高端视觉
   宣纸暖白 × 深墨蓝 × 香槟金 · 衬线大标题
   ============================================================ */

:root {
  /* 色彩系统 */
  --paper: #f7f3ea;          /* 宣纸暖白（页面主底） */
  --paper-2: #fdfbf5;        /* 提亮纸白 */
  --paper-3: #efe9db;        /* 压暗纸色 */
  --ink: #22303d;            /* 正文墨色 */
  --ink-2: #5a6874;          /* 次级文字 */
  --ink-3: #939c9f;          /* 弱文字 */
  --navy: #142838;           /* 深墨蓝（深色区块） */
  --navy-2: #1c3648;         /* 墨蓝亮阶 */
  --navy-3: #24455c;         /* 墨蓝卡片 */
  --gold: #b08d4f;           /* 香槟金 */
  --gold-2: #d3b671;         /* 亮金 */
  --gold-3: #8f6f38;         /* 沉金 */
  --gold-soft: rgba(176, 141, 79, .12);
  --red: #a83232;            /* 品牌红（点睛） */
  --red-2: #c04343;
  --red-soft: #f9ecec;
  --line: #e3dccb;           /* 纸色描线 */
  --line-dark: rgba(211, 182, 113, .22);
  --shadow-lg: 0 24px 60px -18px rgba(20, 40, 56, .25);
  --shadow-md: 0 12px 34px -12px rgba(20, 40, 56, .18);
  --shadow-sm: 0 4px 14px -4px rgba(20, 40, 56, .12);

  /* 字体 */
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
.container-narrow { max-width: 880px; }

.section { padding: 108px 0; position: relative; }

/* ============================================================
   通用：区块标题 / 标签 / 按钮
   ============================================================ */
.section-head { text-align: center; max-width: 720px; margin: 0 auto 64px; }

.section-tag {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .42em;
  text-indent: .42em;
  color: var(--gold-3);
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}
.section-tag::before,
.section-tag::after {
  content: "";
  width: 34px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold));
}
.section-tag::after { background: linear-gradient(90deg, var(--gold), transparent); }

.section-title {
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.3;
  letter-spacing: .04em;
}
.section-title-light { color: #f3ecdc; }

.section-desc {
  margin-top: 16px;
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.9;
}
.section-desc-light { color: rgba(243, 236, 220, .66); }

/* 按钮 */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 34px;
  border-radius: 4px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .12em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .25s ease, box-shadow .25s ease, color .25s ease, border-color .25s ease, background .25s ease;
  overflow: hidden;
  white-space: nowrap;
}
.btn > span { position: relative; z-index: 1; }
.btn::before {
  content: "";
  position: absolute;
  top: 0; left: -80%;
  width: 50%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .35), transparent);
  transform: skewX(-22deg);
  transition: left .55s ease;
}
.btn:hover::before { left: 130%; }
.btn:hover { transform: translateY(-2px); }

.btn-gold {
  background: linear-gradient(135deg, var(--gold-2), var(--gold) 55%, var(--gold-3));
  color: #fff;
  box-shadow: 0 10px 26px -8px rgba(176, 141, 79, .55);
}
.btn-gold:hover { box-shadow: 0 14px 32px -8px rgba(176, 141, 79, .7); }

.btn-ghost {
  border-color: var(--gold);
  color: var(--gold-3);
  background: transparent;
}
.btn-ghost:hover { background: var(--gold-soft); }

.btn-red {
  background: linear-gradient(135deg, var(--red-2), var(--red));
  color: #fff;
  box-shadow: 0 10px 26px -8px rgba(168, 50, 50, .5);
}
.btn-sm { padding: 11px 26px; font-size: 13.5px; }
.btn-block { width: 100%; }

/* ============================================================
   顶部导航
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background .35s ease, box-shadow .35s ease, border-color .35s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(247, 243, 234, .88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px -12px rgba(20, 40, 56, .14);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
  height: 74px;
  display: flex;
  align-items: center;
  gap: 30px;
}

.brand { display: flex; align-items: center; gap: 11px; flex: none; }
.brand-logo { width: 30px; height: 30px; object-fit: contain; }
.brand-text strong {
  display: block;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: .06em;
  line-height: 1.2;
}
.brand-text em {
  display: block;
  font-style: normal;
  font-size: 9.5px;
  letter-spacing: .28em;
  color: var(--gold-3);
  margin-top: 2px;
}

.main-nav { margin-left: auto; display: flex; align-items: center; gap: 30px; }
.nav-link {
  position: relative;
  font-size: 14.5px;
  color: var(--ink);
  letter-spacing: .05em;
  padding: 6px 0;
  transition: color .25s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 0;
  width: 0; height: 2px;
  background: var(--gold);
  transition: width .3s ease, left .3s ease;
}
.nav-link:hover { color: var(--gold-3); }
.nav-link:hover::after { width: 100%; left: 0; }
.nav-hot { color: var(--red); font-weight: 600; }
.nav-hot::before {
  content: "";
  display: inline-block;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--red);
  margin-right: 5px;
  vertical-align: 2px;
}
.nav-cta {
  background: linear-gradient(135deg, var(--gold-2), var(--gold) 55%, var(--gold-3));
  color: #fff;
  padding: 9px 24px;
  border-radius: 4px;
  font-weight: 600;
  box-shadow: 0 8px 20px -6px rgba(176, 141, 79, .5);
  transition: transform .25s ease, box-shadow .25s ease;
}
.nav-cta::after { display: none; }
.nav-cta:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 12px 26px -6px rgba(176, 141, 79, .65); }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  width: 18px; height: 1.5px;
  background: var(--navy);
  transition: transform .3s ease, opacity .3s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  padding: 168px 0 0;
  background:
    radial-gradient(1100px 520px at 88% -10%, rgba(211, 182, 113, .16), transparent 62%),
    radial-gradient(900px 460px at -8% 12%, rgba(20, 40, 56, .05), transparent 60%),
    var(--paper);
  overflow: hidden;
}
.hero-grain {
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(34, 48, 61, .016) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(34, 48, 61, .012) 0 1px, transparent 1px 3px);
  pointer-events: none;
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  pointer-events: none;
}
.hero-glow-a { width: 420px; height: 420px; right: -60px; top: 40px; background: rgba(211, 182, 113, .18); }
.hero-glow-b { width: 340px; height: 340px; left: -100px; bottom: 60px; background: rgba(28, 54, 72, .08); }

.hero-inner {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 60px;
  align-items: center;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .3em;
  color: var(--gold-3);
  margin-bottom: 26px;
}
.hero-kicker i { width: 44px; height: 1px; background: linear-gradient(90deg, transparent, var(--gold)); }
.hero-kicker i:last-child { background: linear-gradient(90deg, var(--gold), transparent); }

.hero-title {
  font-family: var(--serif);
  font-size: clamp(46px, 6.4vw, 78px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: .06em;
  color: var(--navy);
}
.hero-gold {
  background: linear-gradient(105deg, var(--gold-3), var(--gold-2) 45%, var(--gold) 75%, var(--gold-3));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

.hero-sub {
  margin-top: 26px;
  font-size: 16.5px;
  line-height: 2;
  color: var(--ink-2);
  max-width: 480px;
}

.hero-actions { display: flex; gap: 16px; margin-top: 38px; flex-wrap: wrap; }

.hero-tel {
  margin-top: 34px;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-left: 18px;
  border-left: 2px solid var(--gold);
}
.ht-lbl { font-size: 12.5px; color: var(--ink-3); letter-spacing: .2em; }
.ht-num {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--red);
  letter-spacing: .04em;
  transition: color .25s;
}
.ht-num:hover { color: var(--red-2); }

/* Hero 右侧视觉 */
.hero-visual { position: relative; padding: 26px 30px 26px 0; }
.hv-frame {
  position: relative;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  animation: hvFloat 7s ease-in-out infinite;
}
.hv-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(211, 182, 113, .55);
  border-radius: 6px;
  z-index: 2;
  pointer-events: none;
}
.hv-frame::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(211, 182, 113, .25);
  z-index: 2;
  pointer-events: none;
}
.hv-frame img { width: 100%; aspect-ratio: 16 / 10.4; object-fit: cover; }

.hv-ring {
  position: absolute;
  right: 0; top: 50%;
  width: 200px; height: 200px;
  border: 1px solid var(--line-dark);
  border-radius: 50%;
  transform: translateY(-50%);
  animation: hvSpin 26s linear infinite;
}
.hv-ring::before {
  content: "";
  position: absolute;
  top: -4px; left: 50%;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 12px rgba(211, 182, 113, .9);
}

.hv-chip {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: rgba(253, 251, 245, .92);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 18px;
  box-shadow: var(--shadow-sm);
}
.hv-chip b { font-family: var(--serif); font-size: 20px; font-weight: 700; color: var(--navy); line-height: 1.2; }
.hv-chip span { font-size: 11.5px; color: var(--ink-2); letter-spacing: .1em; }
.hv-chip-a { left: -14px; top: 8%; animation: hvFloat 6s .8s ease-in-out infinite; }
.hv-chip-b { right: -6px; bottom: 10%; animation: hvFloat 6.6s .4s ease-in-out infinite; border-top: 2px solid var(--gold); }

@keyframes hvFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
.hv-chip-a { animation-name: hvFloatA; }
.hv-chip-b { animation-name: hvFloatA; }
@keyframes hvFloatA { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes hvSpin { to { transform: translateY(-50%) rotate(360deg); } }

/* Hero 统计条 */
.hero-stats-wrap {
  position: relative;
  max-width: 1200px;
  margin: 76px auto 0;
  padding: 0 28px;
}
.hero-stats {
  background: linear-gradient(120deg, var(--navy) 0%, var(--navy-2) 100%);
  border-radius: 10px;
  padding: 34px 20px;
  display: flex;
  align-items: center;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  margin-bottom: 0;
}
.hero-stats::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid var(--line-dark);
  border-radius: 6px;
  pointer-events: none;
}
.hero-stats::after {
  content: "";
  position: absolute;
  top: -60%; left: -30%;
  width: 60%; height: 220%;
  background: linear-gradient(100deg, transparent, rgba(211, 182, 113, .07), transparent);
  transform: skewX(-18deg);
  pointer-events: none;
}
.hstat {
  flex: 1 1 0;
  min-width: 0;
  text-align: center;
  padding: 4px 10px;
}
.hstat-num {
  font-family: var(--serif);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 700;
  color: var(--gold-2);
  line-height: 1.15;
  letter-spacing: .02em;
}
.hstat-unit { font-family: var(--serif); font-size: 22px; color: var(--gold-2); }
.hstat-lbl {
  display: block;
  margin-top: 7px;
  font-size: 13px;
  color: rgba(243, 236, 220, .62);
  letter-spacing: .14em;
}
.hstat-sep { align-self: center; height: 40px; width: 1px; background: var(--line-dark); }

/* ============================================================
   集团实力
   ============================================================ */
#about { padding-top: 150px; }

.about-grid {
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  gap: 64px;
  align-items: start;
}
.about-text .lead {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  color: var(--navy);
  line-height: 1.7;
  margin-bottom: 20px;
}
.about-text p { color: var(--ink-2); margin-bottom: 16px; }
.about-text strong { color: var(--navy); font-weight: 600; }

.about-promise {
  margin-top: 30px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: 8px;
  padding: 20px 22px;
}
.promise-seal {
  flex: none;
  width: 46px; height: 46px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--red-2), var(--red));
  color: #fff;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  box-shadow: 0 8px 18px -6px rgba(168, 50, 50, .45);
}
.about-promise p { margin: 0; font-size: 14.5px; color: var(--ink-2); line-height: 1.85; }

.about-media { position: relative; }
.about-photo {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: relative;
  z-index: 1;
}
.about-photo::after {
  content: "";
  position: absolute; inset: 0;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 8px;
  pointer-events: none;
}
.about-photo img { width: 100%; aspect-ratio: 4 / 2.55; object-fit: cover; }

.about-matrix {
  margin: -56px 26px 0;
  position: relative;
  z-index: 2;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.matrix-head {
  font-family: var(--serif);
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: .2em;
  color: #f3ecdc;
  background: linear-gradient(120deg, var(--navy), var(--navy-2));
  padding: 13px 24px;
}
.matrix-body { display: grid; grid-template-columns: 1fr 1fr; }
.matrix-item {
  padding: 16px 22px;
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  transition: background .25s ease;
}
.matrix-item:nth-child(2n) { border-right: none; }
.matrix-item:nth-child(-n+2) { border-top: none; }
.matrix-item:hover { background: var(--gold-soft); }
.matrix-item strong { display: block; font-size: 14.5px; color: var(--navy); margin-bottom: 3px; }
.matrix-item span { font-size: 12.5px; color: var(--ink-2); }

/* ============================================================
   电商财税旗舰（深墨蓝重点区）
   ============================================================ */
.section-flagship {
  background:
    radial-gradient(900px 420px at 82% 0%, rgba(211, 182, 113, .09), transparent 60%),
    linear-gradient(160deg, var(--navy) 0%, #10222f 100%);
  color: #dfe6ea;
  overflow: hidden;
}
.flagship-bg {
  position: absolute; inset: 0;
  background-image:
    repeating-linear-gradient(45deg, rgba(211, 182, 113, .028) 0 1px, transparent 1px 26px);
  pointer-events: none;
}
.section-flagship .section-tag { color: var(--gold-2); }
.section-flagship .section-tag::before { background: linear-gradient(90deg, transparent, var(--gold-2)); }
.section-flagship .section-tag::after { background: linear-gradient(90deg, var(--gold-2), transparent); }

.flagship-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
}
.flagship-card {
  background: var(--navy-2);
  border: 1px solid var(--line-dark);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 50px -20px rgba(0, 0, 0, .5);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}
.flagship-card:hover {
  transform: translateY(-8px);
  border-color: rgba(211, 182, 113, .45);
  box-shadow: 0 30px 64px -20px rgba(0, 0, 0, .6);
}
.flagship-photo { position: relative; overflow: hidden; }
.flagship-photo img {
  width: 100%;
  aspect-ratio: 16 / 8.6;
  object-fit: cover;
  transition: transform .8s cubic-bezier(.2, .6, .2, 1);
}
.flagship-card:hover .flagship-photo img { transform: scale(1.06); }
.flagship-photo::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(16, 34, 47, 0) 45%, rgba(16, 34, 47, .82));
}
.flagship-badge {
  position: absolute;
  top: 18px; left: 18px;
  z-index: 2;
  background: linear-gradient(135deg, var(--gold-2), var(--gold-3));
  color: #fff;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .22em;
  padding: 7px 16px;
  border-radius: 3px;
  box-shadow: 0 8px 18px -6px rgba(0, 0, 0, .45);
}
.flagship-no {
  position: absolute;
  right: 20px; bottom: -26px;
  z-index: 2;
  font-family: var(--serif);
  font-size: 88px;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(211, 182, 113, .6);
  text-shadow: 0 10px 30px rgba(0, 0, 0, .4);
}
.flagship-body { padding: 26px 30px 28px; }
.flagship-body h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 700;
  color: #f3ecdc;
  letter-spacing: .04em;
}
.flagship-slogan {
  margin-top: 8px;
  font-size: 13.5px;
  letter-spacing: .1em;
  color: var(--gold-2);
}
.flagship-points { margin-top: 18px; display: grid; gap: 11px; }
.flagship-points li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(223, 230, 234, .82);
}
.flagship-points li::before {
  content: "";
  position: absolute;
  left: 2px; top: 11px;
  width: 7px; height: 7px;
  transform: rotate(45deg);
  background: linear-gradient(135deg, var(--gold-2), var(--gold-3));
}
.flagship-points strong { color: var(--gold-2); font-weight: 600; }
.flagship-foot {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line-dark);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.flagship-tag {
  font-size: 12.5px;
  letter-spacing: .18em;
  color: rgba(223, 230, 234, .55);
  border: 1px solid var(--line-dark);
  padding: 7px 14px;
  border-radius: 99px;
}

.flagship-note {
  position: relative;
  margin-top: 40px;
  display: flex;
  gap: 16px;
  align-items: center;
  background: rgba(211, 182, 113, .07);
  border: 1px solid var(--line-dark);
  border-radius: 10px;
  padding: 20px 26px;
}
.fn-ico {
  flex: none;
  width: 40px; height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line-dark);
  color: var(--gold-2);
  font-size: 16px;
}
.flagship-note p { color: rgba(223, 230, 234, .8); font-size: 14.5px; }
.flagship-note strong { color: var(--gold-2); }

/* ============================================================
   全业务矩阵（浅色）
   ============================================================ */
.section-services {
  background:
    radial-gradient(760px 380px at 8% 8%, rgba(211, 182, 113, .1), transparent 62%),
    var(--paper-2);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.svc-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 30px 28px 26px;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  overflow: hidden;
}
.svc-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold-2), var(--gold), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s ease;
}
.svc-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(176, 141, 79, .4); }
.svc-card:hover::before { transform: scaleX(1); }
.svc-no {
  font-family: var(--serif);
  font-size: 38px;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(176, 141, 79, .55);
  margin-bottom: 14px;
}
.svc-card h3 {
  font-family: var(--serif);
  font-size: 18.5px;
  font-weight: 700;
  color: var(--navy);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.svc-flag {
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--red);
  background: var(--red-soft);
  border: 1px solid rgba(168, 50, 50, .25);
  border-radius: 3px;
  padding: 2.5px 8px;
}
.svc-card p { font-size: 13.8px; color: var(--ink-2); line-height: 1.85; }
.svc-price {
  display: inline-block;
  margin-top: 16px;
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--gold-3);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 5px 14px;
  background: var(--paper);
}
.svc-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--red);
  transition: letter-spacing .3s ease;
}
.svc-link:hover { letter-spacing: .06em; }

.services-more {
  margin-top: 34px;
  text-align: center;
  background: var(--paper-3);
  border: 1px dashed rgba(176, 141, 79, .4);
  border-radius: 10px;
  padding: 20px 26px;
}
.services-more p { color: var(--ink-2); font-size: 14px; }
.services-more strong { color: var(--gold-3); }

/* ============================================================
   专家团队
   ============================================================ */
.section-team { background: var(--paper); }
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.team-card {
  position: relative;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 34px 28px 28px;
  text-align: center;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease, background .3s ease;
}
.team-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(176, 141, 79, .45);
  background: #fff;
}
.team-avatar {
  width: 84px; height: 84px;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(140deg, var(--navy-2), var(--navy));
  border: 2px solid var(--gold);
  box-shadow: 0 0 0 5px rgba(176, 141, 79, .14), var(--shadow-sm);
  transition: box-shadow .3s ease;
}
.team-card:hover .team-avatar { box-shadow: 0 0 0 7px rgba(176, 141, 79, .16), var(--shadow-sm); }
.team-card h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: .1em;
}
.team-role {
  margin-top: 6px;
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--gold-3);
}
.team-card ul {
  margin: 16px auto 0;
  display: inline-grid;
  gap: 5px;
  padding: 10px 18px;
  background: var(--paper-3);
  border-radius: 8px;
}
.team-card ul li { font-size: 12.5px; color: var(--ink-2); position: relative; padding-left: 14px; }
.team-card ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 8.5px;
  width: 5px; height: 5px;
  transform: rotate(45deg);
  background: var(--gold);
}
.team-note {
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-2);
  text-align: justify;
}

/* ============================================================
   案例见证（深墨蓝）
   ============================================================ */
.section-cases {
  background:
    radial-gradient(880px 400px at 90% 100%, rgba(211, 182, 113, .08), transparent 60%),
    linear-gradient(200deg, #10222f, var(--navy) 60%);
  color: #dfe6ea;
}
.cases-head {
  display: flex;
  align-items: center;
  gap: 54px;
  margin-bottom: 56px;
}
.cases-head .section-head { text-align: left; margin: 0; flex: 1; }
.cases-photo {
  flex: none;
  width: 380px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 24px 54px -18px rgba(0, 0, 0, .55);
  transform: rotate(-1.4deg);
  border: 1px solid var(--line-dark);
  position: relative;
}
.cases-photo::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(16, 34, 47, .5));
}
.cases-photo img { width: 100%; aspect-ratio: 16/9.6; object-fit: cover; }

.case-card {
  background: rgba(28, 54, 72, .55);
  border: 1px solid var(--line-dark);
  border-radius: 12px;
  padding: 30px 32px;
  margin-bottom: 22px;
  backdrop-filter: blur(4px);
  transition: border-color .3s ease, transform .3s ease;
}
.case-card:hover { border-color: rgba(211, 182, 113, .4); transform: translateX(4px); }
.case-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
}
.case-head h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  color: #f3ecdc;
  letter-spacing: .03em;
}
.case-meta { margin-top: 6px; font-size: 12.5px; color: rgba(223, 230, 234, .55); letter-spacing: .05em; }
.case-badge {
  flex: none;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--gold-2);
  border: 1px solid rgba(211, 182, 113, .4);
  border-radius: 99px;
  padding: 6px 16px;
}
.case-cols {
  display: grid;
  grid-template-columns: 1fr 46px 1fr;
  align-items: stretch;
}
.case-col {
  border-radius: 8px;
  padding: 20px 22px;
}
.case-col h4 {
  font-family: var(--serif);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: .24em;
  margin-bottom: 12px;
}
.case-before { background: rgba(16, 34, 47, .5); border: 1px solid rgba(255, 255, 255, .05); }
.case-before h4 { color: rgba(223, 230, 234, .55); }
.case-after { background: rgba(211, 182, 113, .1); border: 1px solid rgba(211, 182, 113, .3); }
.case-after h4 { color: var(--gold-2); }
.case-col li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(223, 230, 234, .78);
  margin-bottom: 6px;
}
.case-col li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 6px; height: 6px;
  border-radius: 50%;
}
.case-before li::before { background: rgba(223, 230, 234, .35); }
.case-after li::before { background: var(--gold-2); }
.case-arrow {
  display: grid;
  place-items: center;
  color: var(--gold-2);
  font-size: 20px;
  animation: caseArrow 2.2s ease-in-out infinite;
}
@keyframes caseArrow { 0%, 100% { transform: translateX(0); opacity: .6; } 50% { transform: translateX(5px); opacity: 1; } }

/* ============================================================
   数据见证（浅金调）
   ============================================================ */
.section-cred {
  background:
    radial-gradient(700px 340px at 50% 0%, rgba(211, 182, 113, .12), transparent 65%),
    var(--paper-2);
}
.cred-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 980px;
  margin: 0 auto;
}
.cred-tags span {
  font-size: 13.5px;
  color: var(--ink);
  letter-spacing: .06em;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 9px 22px;
  transition: all .25s ease;
  cursor: default;
}
.cred-tags span:hover {
  border-color: var(--gold);
  color: var(--gold-3);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}
.cred-quote {
  position: relative;
  max-width: 780px;
  margin: 52px auto 0;
  text-align: center;
  padding: 36px 44px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}
.cred-quote::before {
  content: "“";
  position: absolute;
  top: -4px; left: 22px;
  font-family: var(--serif);
  font-size: 84px;
  line-height: 1;
  color: rgba(176, 141, 79, .28);
}
.cred-quote p {
  font-family: var(--serif);
  font-size: 17.5px;
  line-height: 2;
  color: var(--navy);
  text-align: left;
}
.cred-quote > span {
  display: block;
  margin-top: 14px;
  text-align: right;
  font-size: 13px;
  color: var(--ink-3);
  letter-spacing: .1em;
}

/* ============================================================
   FAQ
   ============================================================ */
.section-faq { background: var(--paper); }
.faq-list { display: grid; gap: 14px; }
.faq-item {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  transition: border-color .3s ease, box-shadow .3s ease;
}
.faq-item.open { border-color: rgba(176, 141, 79, .5); box-shadow: var(--shadow-sm); background: #fff; }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  padding: 21px 26px;
  font-family: var(--serif);
  font-size: 16.5px;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: .02em;
  transition: color .25s ease;
}
.faq-q:hover { color: var(--gold-3); }
.faq-ico {
  flex: none;
  position: relative;
  width: 22px; height: 22px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  transition: transform .35s ease, background .35s ease;
}
.faq-ico::before, .faq-ico::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  background: var(--gold-3);
  transform: translate(-50%, -50%);
}
.faq-ico::before { width: 9px; height: 1.5px; }
.faq-ico::after { width: 1.5px; height: 9px; transition: opacity .25s; }
.faq-item.open .faq-ico { transform: rotate(180deg); background: var(--gold-soft); }
.faq-item.open .faq-ico::after { opacity: 0; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}
.faq-a p {
  margin: 0 26px 22px;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--ink-2);
}

/* ============================================================
   联系我们（深墨蓝 + 金）
   ============================================================ */
.section-contact {
  background:
    radial-gradient(820px 420px at 12% 10%, rgba(211, 182, 113, .1), transparent 60%),
    linear-gradient(150deg, var(--navy), #0f2130 85%);
  color: #dfe6ea;
  overflow: hidden;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 460px;
  gap: 60px;
  align-items: stretch;
}
.contact-info .section-tag { color: var(--gold-2); }
.contact-info .section-tag::before { background: linear-gradient(90deg, transparent, var(--gold-2)); }
.contact-info .section-tag::after { background: linear-gradient(90deg, var(--gold-2), transparent); }
.contact-info .section-title { text-align: left; }
.contact-info .section-desc { text-align: left; max-width: 520px; }
.contact-rows { margin-top: 34px; display: grid; gap: 8px; }
.c-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  border: 1px solid var(--line-dark);
  border-radius: 10px;
  background: rgba(28, 54, 72, .45);
  transition: border-color .3s ease, transform .3s ease;
  max-width: 520px;
}
.c-row:hover { border-color: rgba(211, 182, 113, .5); transform: translateX(4px); }
.c-ico {
  flex: none;
  width: 42px; height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(211, 182, 113, .4);
  color: var(--gold-2);
  font-size: 16px;
}
.c-lbl { font-size: 12px; letter-spacing: .18em; color: rgba(223, 230, 234, .5); }
.c-val { font-size: 15px; color: #eef2ee; margin-top: 2px; }
.c-val a { color: var(--gold-2); font-family: var(--serif); font-weight: 700; font-size: 17px; letter-spacing: .04em; }

.contact-photo {
  margin-top: 26px;
  max-width: 520px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line-dark);
  box-shadow: 0 20px 48px -18px rgba(0, 0, 0, .55);
  position: relative;
}
.contact-photo::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(15, 33, 48, .55));
}
.contact-photo img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.contact-note { margin-top: 20px; display: grid; gap: 4px; }
.contact-note p { font-size: 13.5px; color: rgba(223, 230, 234, .55); position: relative; padding-left: 16px; }
.contact-note p::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 6px; height: 6px;
  transform: rotate(45deg);
  background: var(--gold-2);
}

/* 表单 */
.contact-form {
  background: var(--paper-2);
  border-radius: 12px;
  padding: 38px 36px 34px;
  align-self: flex-end;
  box-shadow: 0 30px 70px -20px rgba(0, 0, 0, .55);
  border-top: 3px solid var(--gold);
  position: relative;
}
.contact-form h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 24px;
  letter-spacing: .06em;
}
.f-field { display: block; margin-bottom: 18px; }
.f-field > span {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: .1em;
  margin-bottom: 8px;
}
.f-field input,
.f-field select,
.f-field textarea {
  width: 100%;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 15px;
  font-family: var(--sans);
  font-size: 14.5px;
  color: var(--ink);
  transition: border-color .25s ease, box-shadow .25s ease;
  outline: none;
}
.f-field textarea { resize: vertical; min-height: 96px; }
.f-field input:focus,
.f-field select:focus,
.f-field textarea:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(176, 141, 79, .15);
}
.f-field input::placeholder,
.f-field textarea::placeholder { color: var(--ink-3); }
.form-tip {
  margin-top: 14px;
  font-size: 13px;
  text-align: center;
  min-height: 20px;
}
.form-tip.ok { color: #2f7d4f; }
.form-tip.err { color: var(--red); }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  background: #0c1a26;
  color: rgba(223, 230, 234, .66);
  padding: 66px 0 0;
  border-top: 1px solid rgba(211, 182, 113, .16);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 46px;
}
.footer-brand .brand-text strong { color: #f3ecdc; }
.footer-brand > p { margin-top: 18px; font-size: 13.5px; line-height: 1.9; max-width: 320px; }
.footer-col h4 {
  font-family: var(--serif);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--gold-2);
  letter-spacing: .2em;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 12px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 26px; height: 1px;
  background: var(--gold);
}
.footer-col a {
  display: block;
  font-size: 13.5px;
  color: rgba(223, 230, 234, .62);
  padding: 5px 0;
  transition: color .25s ease, transform .25s ease;
}
.footer-col a:hover { color: var(--gold-2); transform: translateX(4px); }
.footer-col p { font-size: 13.5px; padding: 5px 0; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .06);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-bottom p { font-size: 12.5px; color: rgba(223, 230, 234, .4); }
.footer-beian a { color: rgba(223, 230, 234, .55); text-decoration: none; }
.footer-beian a:hover { color: var(--gold-2); }

/* 返回顶部 */
.back-top {
  position: fixed;
  right: 26px; bottom: 30px;
  width: 46px; height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-2), var(--gold-3));
  color: #fff;
  font-size: 17px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: all .35s ease;
  box-shadow: 0 12px 28px -8px rgba(176, 141, 79, .6);
  z-index: 90;
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { transform: translateY(-4px); }

/* ============================================================
   入场动画
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .8s cubic-bezier(.2, .6, .2, 1), transform .8s cubic-bezier(.2, .6, .2, 1);
  will-change: opacity, transform;
}
.reveal.in { opacity: 1; transform: translateY(0); }

/* hero 元素依次入场 */
.hero .reveal { transition-delay: 0s; }
.hero .hero-visual.reveal { transform: none; }
.hero-visual .hv-frame { will-change: transform; }
.hero .hero-kicker.reveal { transition-delay: .05s; }
.hero .hero-title.reveal { transition-delay: .15s; }
.hero .hero-sub.reveal { transition-delay: .3s; }
.hero .hero-actions.reveal { transition-delay: .42s; }
.hero .hero-tel.reveal { transition-delay: .52s; }
.hero .hero-visual.reveal { transition-delay: .25s; }
.hero .hero-stats.reveal { transition-delay: .1s; }

.flagship-grid .flagship-card:nth-child(2).reveal,
.services-grid .svc-card:nth-child(3n+2).reveal,
.team-grid .team-card:nth-child(3n+2).reveal { transition-delay: .12s; }
.flagship-grid .flagship-card:nth-child(3).reveal,
.services-grid .svc-card:nth-child(3n).reveal,
.team-grid .team-card:nth-child(3n).reveal { transition-delay: .24s; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { max-width: 560px; padding: 20px 24px 20px 0; }
  .hero-sub { max-width: 100%; }
  .about-grid { grid-template-columns: 1fr; gap: 52px; }
  .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .contact-form { max-width: 560px; }
  .cases-head { flex-direction: column; gap: 30px; }
  .cases-photo { width: min(100%, 520px); }
}

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 74px; left: 0; right: 0;
    background: rgba(247, 243, 234, .97);
    backdrop-filter: blur(14px);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 28px 22px;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: all .3s ease;
  }
  .main-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-link { padding: 13px 4px; border-bottom: 1px dashed var(--line); }
  .nav-cta { margin-top: 14px; justify-content: center; border-bottom: none; }

  .section { padding: 78px 0; }
  #about { padding-top: 110px; }
  .hero { padding-top: 132px; }
  .services-grid, .team-grid { grid-template-columns: 1fr 1fr; }
  .flagship-grid { grid-template-columns: 1fr; }
  .hero-stats { display: flex; flex-wrap: wrap; gap: 16px 0; justify-content: center; }
  .hstat { flex: 1 1 45%; }
  .hstat-sep { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .case-cols { grid-template-columns: 1fr; }
  .case-arrow { padding: 8px 0; transform: rotate(90deg); animation: none; }
  .cred-quote { padding: 28px 26px; }
  .cred-quote::before { left: 12px; }
}

@media (max-width: 620px) {
  .container { padding: 0 20px; }
  .hero-inner, .hero-stats-wrap { padding: 0 20px; }
  .services-grid, .team-grid { grid-template-columns: 1fr; }
  .about-matrix { margin: -40px 12px 0; }
  .matrix-body { grid-template-columns: 1fr; }
  .matrix-item { border-right: none; }
  .matrix-item:nth-child(2) { border-top: 1px solid var(--line); }
  .hero-actions .btn { width: 100%; }
  .hv-chip-a { left: -4px; }
  .hv-chip-b { right: -2px; }
  .flagship-no { font-size: 64px; right: 14px; }
  .flagship-body { padding: 22px 20px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .cred-quote p { font-size: 15.5px; }
  .contact-form { padding: 28px 22px; }
}

/* 减弱动态效果偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   动态烫金星链底纹（Gold-Foil Nebula）
   【设计约束】深墨蓝区块保留原配色，叠加金色星点；
   其余背景一律纯白，烫金线条+星链作为点缀性动态装饰。
   ============================================================ */

/* 全站基底：纯白（金链在此之上浮动） */
body { background: #ffffff; }

/* 星链 Canvas 层：固定全屏，位于浅色区块之下 */
#starfield {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* 浅色区块 → 纯白（质感由深层卡片承担，非深墨蓝一律白底） */
.hero,
.section#about,
.section-services,
.section-cred,
.section-team,
.section-faq {
  position: relative;
  z-index: 1;
  background: #ffffff;
}

/* 深墨蓝区块：星点前景层（配色与布局保持不变） */
.stars-field {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: .62;
  background-image:
    radial-gradient(1.5px 1.5px at 32% 30%, rgba(243, 236, 220, .95) 50%, transparent 51%),
    radial-gradient(1px 1px at 68% 62%, rgba(211, 182, 113, .85) 50%, transparent 51%),
    radial-gradient(.8px .8px at 50% 84%, rgba(243, 236, 220, .6) 50%, transparent 51%),
    radial-gradient(1.1px 1.1px at 12% 74%, rgba(211, 182, 113, .7) 50%, transparent 51%);
  background-size: 180px 150px, 220px 200px, 130px 130px, 260px 170px;
  animation:
    starDrift 46s linear infinite,
    starTwinkle 6s ease-in-out infinite;
}
@keyframes starDrift {
  from { background-position: 0 0, 0 0, 0 0, 0 0; }
  to   { background-position: -180px 30px, -220px -120px, -130px 80px, -260px -40px; }
}
@keyframes starTwinkle {
  0%, 100% { opacity: .45; }
  50%      { opacity: .72; }
}

/* 深区块内容上移，置于星点层之上 */
.section-flagship > .container,
.section-cases > .container,
.section-contact > .container,
.site-footer > .container { position: relative; z-index: 2; }