/* ════════════════════════════════════════════════════
   NewCard — Black & Gold Design System
   ════════════════════════════════════════════════════ */
:root {
  --ink:        #0a0907;
  --ink-2:      #100e0a;
  --panel:      #16130d;
  --panel-2:    #1c1810;
  --line:       rgba(201, 162, 75, .16);
  --line-hi:    rgba(201, 162, 75, .38);
  --gold:       #c9a24b;
  --gold-hi:    #ecd9a0;
  --gold-pale:  #f6ecd2;
  --gold-deep:  #7d5f24;
  --text:       #ede4d3;
  --muted:      #9c9078;
  --serif:      'Cormorant Garamond', 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
  --sans:       -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --ease:       cubic-bezier(.22, .8, .3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--ink);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: var(--gold); color: var(--ink); }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img, svg { display: block; }
.container { width: min(1200px, 92vw); margin: 0 auto; }
.latin { font-family: 'Cormorant Garamond', serif; letter-spacing: .04em; }

/* ── 通用点缀 ─────────────────────────────── */
.eyebrow {
  font-size: 12px;
  letter-spacing: .32em;
  color: var(--gold);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}
.eyebrow-dot {
  width: 7px; height: 7px;
  background: var(--gold);
  transform: rotate(45deg);
  flex: none;
}
.eyebrow-dot.pulse { animation: pulse 2.2s infinite; }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(201,162,75,.5); }
  60%      { box-shadow: 0 0 0 9px rgba(201,162,75,0); }
}

.section { padding: 130px 0; position: relative; }
.section-alt { background: var(--ink-2); border-block: 1px solid var(--line); }
.section-dark {
  background:
    radial-gradient(900px 500px at 85% 0%, rgba(201,162,75,.07), transparent 60%),
    var(--ink-2);
  border-block: 1px solid var(--line);
}
.section-head { max-width: 640px; margin-bottom: 72px; }
.section-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(34px, 4.6vw, 56px);
  line-height: 1.22;
  letter-spacing: .02em;
}
.section-title em { font-style: normal; color: var(--gold); }
.section-title em.latin { font-style: italic; }
.section-lede { color: var(--muted); margin-top: 18px; font-size: 17px; }

/* ── 按钮 ────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 34px;
  font-size: 15px;
  letter-spacing: .12em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .35s var(--ease);
  font-family: var(--sans);
  white-space: nowrap;
}
.btn-sm { padding: 10px 22px; font-size: 13px; }
.btn-block { width: 100%; }
.btn-gold {
  background: linear-gradient(120deg, var(--gold-deep), var(--gold) 45%, var(--gold-hi));
  color: #14100a;
  font-weight: 600;
}
.btn-gold:hover { filter: brightness(1.12); transform: translateY(-2px); }
.btn-ghost {
  border-color: var(--line-hi);
  color: var(--text);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold-hi); }
.btn-outline-gold {
  border-color: var(--gold);
  color: var(--gold);
  background: transparent;
}
.btn-outline-gold:hover { background: rgba(201,162,75,.1); color: var(--gold-hi); }
.btn-arrow { transition: transform .35s var(--ease); }
.btn:hover .btn-arrow { transform: translateX(5px); }

/* ── 导航 ────────────────────────────────── */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background .4s, border-color .4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(10, 9, 7, .88);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.nav-inner {
  width: min(1280px, 94vw);
  margin: 0 auto;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border: 1px solid var(--gold);
  color: var(--gold);
  transform: rotate(45deg);
  font-size: 0;
  flex: none;
}
.brand-mark::after {
  content: 'NC';
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .06em;
  transform: rotate(-45deg);
}
.brand-word { display: flex; flex-direction: column; line-height: 1.3; }
.brand-name { font-family: var(--serif); font-size: 21px; font-weight: 600; letter-spacing: .06em; }
.brand-sub { font-size: 11px; color: var(--muted); letter-spacing: .2em; }
.nav-links { display: flex; gap: 38px; }
.nav-links a {
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--muted);
  position: relative;
  padding: 6px 0;
  transition: color .3s;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--gold);
  transition: width .35s var(--ease);
}
.nav-links a:hover { color: var(--gold-hi); }
.nav-links a:hover::after { width: 100%; }
.nav-actions { display: flex; align-items: center; gap: 16px; }
.nav-toggle {
  display: none;
  background: none; border: none;
  width: 34px; height: 30px;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
}
.nav-toggle span { height: 1px; background: var(--gold); transition: transform .3s, opacity .3s; }
.nav-toggle.open span:first-child { transform: translateY(4.5px) rotate(45deg); }
.nav-toggle.open span:last-child { transform: translateY(-4.5px) rotate(-45deg); }

/* ── 首屏 ────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 150px 0 90px;
  position: relative;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1000px 620px at 78% 30%, rgba(201,162,75,.12), transparent 62%),
    radial-gradient(700px 500px at 8% 85%, rgba(125,95,36,.10), transparent 60%);
  pointer-events: none;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 120px 120px;
  opacity: .14;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, black 30%, transparent 75%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 60px;
  align-items: center;
  position: relative;
}
.hero-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(44px, 6.4vw, 84px);
  line-height: 1.16;
  letter-spacing: .03em;
  margin-bottom: 28px;
}
.hero-title em.latin {
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(100deg, var(--gold-deep), var(--gold) 40%, var(--gold-pale) 65%, var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lede { color: var(--muted); font-size: 17px; max-width: 480px; margin-bottom: 42px; }
.hero-cta { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 64px; }
.hero-stats {
  display: flex;
  border-top: 1px solid var(--line);
}
.hero-stats .stat {
  padding: 26px 34px 0 0;
  margin-right: 34px;
  border-right: 1px solid var(--line);
}
.hero-stats .stat:last-child { border-right: none; }
.hero-stats dt { font-size: 12px; letter-spacing: .22em; color: var(--muted); margin-bottom: 8px; }
.hero-stats dd {
  font-family: var(--serif);
  font-size: 42px;
  font-weight: 500;
  color: var(--gold-hi);
  line-height: 1;
}
.hero-stats dd i { font-style: normal; font-size: 20px; color: var(--gold); margin-left: 2px; }

/* ── 3D 银行卡 ───────────────────────────── */
.hero-card-wrap { display: flex; flex-direction: column; align-items: center; gap: 22px; }
.card-scene { perspective: 1400px; width: min(440px, 100%); }
.bank-card {
  position: relative;
  width: 100%;
  aspect-ratio: 1.586;
  transform-style: preserve-3d;
  transition: transform .9s var(--ease);
  cursor: pointer;
  will-change: transform;
}
.bank-card.flipped { transform: rotateY(180deg); }
.card-face {
  position: absolute;
  inset: 0;
  border-radius: 18px;
  backface-visibility: hidden;
  overflow: hidden;
  padding: 7% 8%;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(236, 217, 160, .35);
  box-shadow:
    0 30px 70px -18px rgba(0, 0, 0, .85),
    0 0 0 1px rgba(0,0,0,.6),
    inset 0 1px 0 rgba(246, 236, 210, .25);
}
.card-front {
  background:
    linear-gradient(115deg, rgba(246,236,210,.10), transparent 40%),
    radial-gradient(130% 160% at 85% -20%, rgba(201,162,75,.55), transparent 55%),
    radial-gradient(120% 150% at -10% 120%, rgba(125,95,36,.5), transparent 55%),
    linear-gradient(160deg, #221c10, #0d0b07 55%, #171208);
  justify-content: space-between;
}
.card-back {
  transform: rotateY(180deg);
  background:
    radial-gradient(130% 160% at 15% -20%, rgba(201,162,75,.4), transparent 55%),
    linear-gradient(200deg, #1d180e, #0c0a06 60%, #151009);
  justify-content: flex-start;
  gap: 9%;
  padding-top: 0;
  padding-inline: 0;
}
.card-sheen {
  position: absolute;
  inset: -40%;
  background: linear-gradient(105deg, transparent 42%, rgba(246,236,210,.16) 50%, transparent 58%);
  transform: translateX(-60%);
  animation: sheen 5.5s var(--ease) infinite;
  pointer-events: none;
}
@keyframes sheen {
  0%, 55% { transform: translateX(-70%); }
  85%, 100% { transform: translateX(70%); }
}
.card-top { display: flex; justify-content: space-between; align-items: flex-start; }
.card-brand {
  font-family: var(--serif);
  letter-spacing: .28em;
  font-size: clamp(13px, 1.6vw, 16px);
  color: var(--gold-pale);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.card-brand span {
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: .42em;
  color: var(--gold);
}
.card-nfc { width: 26px; color: var(--gold-hi); opacity: .9; }
.card-nfc svg { width: 100%; }
.card-chip {
  width: 15%;
  aspect-ratio: 1.32;
  border-radius: 6px;
  background:
    linear-gradient(135deg, #f6ecd2, #c9a24b 55%, #8a6a2a);
  position: relative;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.35);
}
.card-chip i {
  position: absolute;
  inset: 18% 12%;
  border: 1px solid rgba(20,16,10,.5);
  border-radius: 3px;
}
.card-chip i::before, .card-chip i::after {
  content: '';
  position: absolute;
  background: rgba(20,16,10,.5);
}
.card-chip i::before { left: 0; right: 0; top: 50%; height: 1px; }
.card-chip i::after { top: 0; bottom: 0; left: 50%; width: 1px; }
.card-number {
  font-family: var(--serif);
  font-size: clamp(19px, 2.6vw, 26px);
  letter-spacing: .14em;
  color: var(--gold-pale);
  text-shadow: 0 1px 0 rgba(0,0,0,.6);
}
.card-bottom { display: flex; align-items: flex-end; gap: 12%; }
.card-field { display: flex; flex-direction: column; gap: 4px; }
.card-field span {
  font-size: 9px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--muted);
}
.card-field strong {
  font-family: var(--serif);
  font-size: clamp(12px, 1.5vw, 15px);
  letter-spacing: .12em;
  color: var(--text);
  font-weight: 500;
}
.card-network {
  margin-left: auto;
  font-style: italic;
  font-weight: 600;
  font-size: clamp(17px, 2.2vw, 22px);
  color: var(--gold-hi);
  letter-spacing: .06em;
}
.card-strip {
  height: 20%;
  margin-top: 7%;
  background: linear-gradient(#050403, #191510, #050403);
}
.card-sign-row {
  display: flex;
  align-items: stretch;
  gap: 4%;
  padding-inline: 8%;
}
.card-sign {
  flex: 1;
  background: repeating-linear-gradient(0deg, #e8dfc9 0 3px, #d9cfb4 3px 6px);
  color: #4a3f28;
  font-size: 7px;
  letter-spacing: .14em;
  display: flex;
  align-items: center;
  padding: 0 10px;
  font-style: italic;
  overflow: hidden;
  white-space: nowrap;
}
.card-cvv {
  background: rgba(246,236,210,.08);
  border: 1px solid var(--line-hi);
  padding: 6px 12px;
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}
.card-cvv span { font-size: 8px; letter-spacing: .2em; color: var(--muted); }
.card-cvv strong { font-family: var(--serif); color: var(--gold-pale); letter-spacing: .2em; }
.card-back-foot {
  margin-top: auto;
  padding: 0 8% 7%;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  font-size: 8px;
  letter-spacing: .22em;
  color: var(--muted);
}
.card-hint {
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--muted);
}
.hero-badges { display: flex; gap: 0; border: 1px solid var(--line); }
.hero-badges li {
  padding: 12px 26px;
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--gold-hi);
  border-right: 1px solid var(--line);
}
.hero-badges li:last-child { border-right: none; }

/* ── 合作伙伴 ────────────────────────────── */
.trust {
  border-block: 1px solid var(--line);
  padding: 44px 0;
  background: var(--ink-2);
  text-align: center;
}
.trust-label {
  font-size: 11px;
  letter-spacing: .4em;
  color: var(--muted);
  margin-bottom: 22px;
}
.trust-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 18px 52px;
}
.trust-list li {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: .1em;
  color: var(--text);
  opacity: .55;
  transition: opacity .3s, color .3s;
}
.trust-list li:hover { opacity: 1; color: var(--gold-hi); }
.trust-feats {
  margin-top: 22px;
  font-size: 13px;
  letter-spacing: .3em;
  color: var(--gold);
}

/* ── 为何选择 ────────────────────────────── */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.why-item {
  padding: 44px 34px 50px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background .4s;
}
.why-item:hover { background: rgba(201,162,75,.05); }
.why-num {
  font-size: 15px;
  color: var(--gold-deep);
  letter-spacing: .2em;
  display: block;
  margin-bottom: 26px;
}
.why-item:hover .why-num { color: var(--gold); }
.why-item h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: .06em;
  margin-bottom: 14px;
}
.why-item p { font-size: 14px; color: var(--muted); line-height: 1.9; }

/* ── 全球生态 ────────────────────────────── */
.eco-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  margin-bottom: 60px;
}
.eco-grid li {
  padding: 26px 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 2px;
  transition: background .35s;
}
.eco-grid li:hover { background: rgba(201,162,75,.06); }
.eco-grid strong { font-size: 16px; font-weight: 500; letter-spacing: .04em; }
.eco-grid span { font-size: 12px; color: var(--muted); }
.eco-grid em {
  font-style: normal;
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--gold-deep);
  margin-top: 8px;
}
.eco-stats {
  display: flex;
  justify-content: center;
  gap: 90px;
}
.eco-stats div { text-align: center; }
.eco-stats dt { font-size: 12px; letter-spacing: .26em; color: var(--muted); margin-bottom: 8px; }
.eco-stats dd {
  font-family: var(--serif);
  font-size: 46px;
  color: var(--gold-hi);
  line-height: 1;
}

/* ── 产品体系 · 三档 ─────────────────────── */
.tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
  margin-bottom: 110px;
}
.tier {
  position: relative;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 46px 38px 42px;
  display: flex;
  flex-direction: column;
  transition: transform .45s var(--ease), border-color .45s, box-shadow .45s;
}
.tier:hover { transform: translateY(-8px); border-color: var(--line-hi); }
.tier-pop {
  border-color: var(--gold);
  background:
    radial-gradient(120% 90% at 50% -20%, rgba(201,162,75,.14), transparent 60%),
    var(--panel-2);
  box-shadow: 0 34px 80px -30px rgba(201,162,75,.25);
  transform: scale(1.03);
}
.tier-pop:hover { transform: scale(1.03) translateY(-8px); }
.tier-seal {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(120deg, var(--gold-deep), var(--gold), var(--gold-hi));
  color: #14100a;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .3em;
  padding: 6px 20px 6px 24px;
}
.tier-kicker {
  font-size: 12px;
  letter-spacing: .34em;
  color: var(--gold);
  margin-bottom: 14px;
}
.tier-name {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 600;
  letter-spacing: .04em;
  margin-bottom: 12px;
}
.tier-elite .tier-name {
  background: linear-gradient(100deg, var(--gold-deep), var(--gold-hi) 60%, var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.tier-desc { font-size: 14px; color: var(--muted); margin-bottom: 28px; min-height: 3.6em; }
.tier-price {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 500;
  color: var(--gold-pale);
  line-height: 1;
  padding-bottom: 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}
.tier-cur { font-size: 26px; vertical-align: super; color: var(--gold); }
.tier-per { font-size: 15px; font-family: var(--sans); color: var(--muted); margin-left: 6px; }
.tier-feats { display: flex; flex-direction: column; gap: 13px; margin-bottom: 30px; flex: 1; }
.tier-feats li {
  font-size: 14px;
  color: var(--text);
  padding-left: 22px;
  position: relative;
}
.tier-feats li::before {
  content: '';
  position: absolute;
  left: 0; top: .62em;
  width: 6px; height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
}
.tier-aud {
  font-size: 12.5px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: 18px;
  margin-bottom: 26px;
  line-height: 1.8;
}
.tier-aud span {
  display: block;
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--gold-deep);
  margin-bottom: 4px;
}

/* ── 权益对比表 ──────────────────────────── */
.compare { margin-bottom: 110px; }
.compare-head { text-align: center; margin-bottom: 44px; }
.compare-head h3 {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 600;
  letter-spacing: .06em;
  margin-bottom: 10px;
}
.compare-head p { color: var(--muted); font-size: 14px; letter-spacing: .14em; }
.compare-scroll { overflow-x: auto; border: 1px solid var(--line); }
.compare-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 14.5px;
}
.compare-table th, .compare-table td {
  padding: 17px 26px;
  text-align: center;
  border-bottom: 1px solid var(--line);
}
.compare-table th {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--gold-hi);
  background: var(--panel);
}
.compare-table td:first-child, .compare-table th:first-child {
  text-align: left;
  color: var(--muted);
  letter-spacing: .06em;
}
.compare-table tbody tr:hover td { background: rgba(201,162,75,.05); }
.compare-table .col-pop { background: rgba(201,162,75,.07); color: var(--gold-pale); }
.compare-table tfoot td { border-bottom: none; padding: 22px 26px; background: var(--panel); }

/* ── FAQ ─────────────────────────────────── */
.faq { max-width: 780px; margin: 0 auto; }
.faq-title {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 600;
  letter-spacing: .08em;
  text-align: center;
  margin-bottom: 40px;
}
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:first-of-type { border-top: 1px solid var(--line); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 24px 44px 24px 4px;
  font-size: 16.5px;
  font-weight: 500;
  letter-spacing: .04em;
  position: relative;
  transition: color .3s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 8px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--serif);
  font-size: 26px;
  color: var(--gold);
  transition: transform .4s var(--ease);
}
.faq-item[open] summary { color: var(--gold-hi); }
.faq-item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-item p {
  padding: 0 40px 26px 4px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.9;
}

/* ── 安全枢纽 ────────────────────────────── */
.sec-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 80px;
  align-items: start;
  margin-bottom: 80px;
}
.sec-stats { display: flex; gap: 0; margin-top: 48px; border: 1px solid var(--line); }
.sec-stats div {
  flex: 1;
  padding: 24px 10px;
  text-align: center;
  border-right: 1px solid var(--line);
}
.sec-stats div:last-child { border-right: none; }
.sec-stats dt { font-size: 11px; letter-spacing: .26em; color: var(--muted); margin-bottom: 8px; }
.sec-stats dd { font-family: var(--serif); font-size: 34px; color: var(--gold-hi); line-height: 1.1; }
.sec-stats dd span { font-size: 16px; color: var(--gold); }
.sec-list { display: flex; flex-direction: column; }
.sec-list li {
  display: flex;
  gap: 34px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}
.sec-list li:first-child { border-top: 1px solid var(--line); }
.sec-list .why-num { margin: 6px 0 0; }
.sec-list h3 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: .06em;
  margin-bottom: 8px;
}
.sec-list p { font-size: 14px; color: var(--muted); line-height: 1.85; }
.certs {
  border: 1px solid var(--line);
  padding: 36px 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  background: rgba(201,162,75,.04);
}
.certs p { font-size: 13.5px; color: var(--muted); max-width: 480px; line-height: 1.9; }
.certs ul { display: flex; gap: 14px; flex-wrap: wrap; }
.certs li {
  border: 1px solid var(--line-hi);
  color: var(--gold-hi);
  font-size: 13px;
  letter-spacing: .14em;
  padding: 10px 20px;
}

/* ── 联系我们 ────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  margin-bottom: 90px;
}
.contact-info { display: flex; flex-direction: column; gap: 34px; }
.ci-block { border-left: 1px solid var(--line-hi); padding-left: 26px; }
.ci-block h3 {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: .06em;
  margin-bottom: 10px;
}
.ci-block p { font-size: 14.5px; color: var(--muted); line-height: 2; }
.ci-big { font-size: 17px !important; color: var(--gold-hi) !important; }
.ci-mail { color: var(--gold); border-bottom: 1px solid var(--line-hi); transition: color .3s; }
.ci-mail:hover { color: var(--gold-hi); }
.ci-stats { display: flex; border: 1px solid var(--line); }
.ci-stats div { flex: 1; text-align: center; padding: 20px 8px; border-right: 1px solid var(--line); }
.ci-stats div:last-child { border-right: none; }
.ci-stats dt { font-size: 11px; letter-spacing: .2em; color: var(--muted); margin-bottom: 6px; }
.ci-stats dd { font-family: var(--serif); font-size: 24px; color: var(--gold-hi); }

.contact-form {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 46px 44px;
}
.contact-form h3 {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: .06em;
}
.cf-sub { font-size: 13px; color: var(--muted); margin: 8px 0 30px; }
.cf-field { display: block; margin-bottom: 22px; }
.cf-field span {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--muted);
  margin-bottom: 9px;
}
.cf-field span i { font-style: normal; letter-spacing: .08em; }
.cf-field input, .cf-field select, .cf-field textarea {
  width: 100%;
  background: var(--ink);
  border: 1px solid var(--line);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  padding: 13px 16px;
  transition: border-color .3s;
  border-radius: 0;
  appearance: none;
}
.cf-field textarea { resize: vertical; min-height: 110px; }
.cf-field input:focus, .cf-field select:focus, .cf-field textarea:focus {
  outline: none;
  border-color: var(--gold);
}
.cf-err {
  display: none;
  font-style: normal;
  font-size: 12px;
  color: #d98a7a;
  margin-top: 6px;
}
.cf-field.invalid .cf-err { display: block; }
.cf-field.invalid input, .cf-field.invalid textarea { border-color: #a05a4c; }

.offices {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.offices li {
  padding: 38px 36px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.offices h4 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--gold-hi);
  margin-bottom: 14px;
}
.offices p { font-size: 14px; color: var(--text); line-height: 1.9; }
.offices .of-meta { font-size: 12.5px; color: var(--muted); margin-top: 10px; }

/* ── 页脚 ────────────────────────────────── */
.footer { border-top: 1px solid var(--line); background: var(--ink-2); }
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  padding: 52px 0 34px;
  flex-wrap: wrap;
}
.footer-brand { display: flex; align-items: center; gap: 18px; }
.footer-name { font-family: var(--serif); font-size: 20px; font-weight: 600; letter-spacing: .08em; }
.footer-tag { font-size: 12px; letter-spacing: .3em; color: var(--muted); margin-top: 4px; }
.footer-nav { display: flex; gap: 32px; }
.footer-nav a { font-size: 13px; letter-spacing: .16em; color: var(--muted); transition: color .3s; }
.footer-nav a:hover { color: var(--gold-hi); }
.footer-copy {
  text-align: center;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--gold-deep);
  padding: 22px 0 30px;
  border-top: 1px solid var(--line);
}

/* ── 弹层 ────────────────────────────────── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  background: rgba(5, 4, 3, .8);
  backdrop-filter: blur(6px);
}
.modal[hidden] { display: none; }
.modal-box {
  background: var(--panel-2);
  border: 1px solid var(--gold);
  padding: 56px 60px;
  text-align: center;
  max-width: 420px;
  animation: modalIn .5s var(--ease);
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: none; }
}
.modal-seal {
  display: inline-grid;
  place-items: center;
  width: 58px; height: 58px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  color: var(--gold);
  font-size: 24px;
  margin-bottom: 24px;
}
.modal-box h3 {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: .1em;
  margin-bottom: 12px;
}
.modal-box p { color: var(--muted); font-size: 14px; margin-bottom: 32px; }

/* ── 入场动效 ────────────────────────────── */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ── 响应式 ──────────────────────────────── */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 70px; }
  .hero { padding-top: 130px; }
  .hero-copy { text-align: center; }
  .hero-lede { margin-inline: auto; }
  .hero-cta, .eyebrow { justify-content: center; }
  .hero-stats { justify-content: center; }
  .why-grid, .eco-grid { grid-template-columns: repeat(2, 1fr); }
  .tiers { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; margin-bottom: 90px; }
  .tier-pop { transform: none; }
  .tier-pop:hover { transform: translateY(-8px); }
  .sec-grid { grid-template-columns: 1fr; gap: 60px; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .section { padding: 90px 0; }
  .nav-links {
    position: fixed;
    inset: 76px 0 auto 0;
    background: rgba(10,9,7,.97);
    flex-direction: column;
    gap: 0;
    padding: 10px 6vw 26px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    transition: transform .45s var(--ease);
  }
  .nav-links.open { transform: none; }
  .nav-links a { padding: 15px 0; border-bottom: 1px solid var(--line); }
  .nav-toggle { display: flex; }
  .hero-stats .stat { padding-right: 20px; margin-right: 20px; }
  .hero-stats dd { font-size: 32px; }
  .hero-badges li { padding: 10px 16px; font-size: 12px; }
  .why-grid, .eco-grid, .offices { grid-template-columns: 1fr; }
  .eco-stats { gap: 36px; }
  .eco-stats dd { font-size: 34px; }
  .sec-stats dd { font-size: 26px; }
  .contact-form { padding: 34px 26px; }
  .certs { padding: 28px 24px; }
  .footer-inner { justify-content: center; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}