/* ===========================
   INI Investment · 共享样式 v2
   =========================== */

:root {
  --bg-deep: #0F1F1A;
  --bg-mid: #162A22;
  --bg-card: #1E342B;
  --gold: #C8A04C;
  --gold-light: #DAB76E;
  --gold-dim: rgba(200, 160, 76, 0.2);
  --gold-soft: rgba(200, 160, 76, 0.06);
  --text: #F0EBDC;
  --text-soft: rgba(240, 235, 220, 0.78);
  --text-muted: rgba(240, 235, 220, 0.55);
  --divider: rgba(200, 160, 76, 0.22);
  --warn-soft: rgba(180, 90, 90, 0.08);
  --warn-border: rgba(180, 90, 90, 0.3);
  --warn-text: rgba(220, 160, 160, 0.85);
  
  --f-serif: "Noto Serif SC", "Songti SC", "STSong", serif;
  --f-sans: "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --f-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-deep);
  color: var(--text);
  font-family: var(--f-sans);
  font-weight: 300;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
  background: 
    radial-gradient(circle at 15% 20%, rgba(200, 160, 76, 0.025) 0%, transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(200, 160, 76, 0.018) 0%, transparent 50%);
}

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

/* === NAV === */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.1rem 2.5rem;
  background: rgba(15, 31, 26, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
nav.scrolled { border-bottom-color: var(--divider); }
.nav-inner {
  max-width: 1320px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
}
.logo {
  display: flex; align-items: center; gap: 0.85rem;
  text-decoration: none;
}
.logo-mark {
  width: 36px; height: 36px;
  border: 1.5px solid var(--gold);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--gold);
  font-family: var(--f-serif);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  background: var(--bg-deep);
}
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text .main {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 1.15rem;
  letter-spacing: 0.18em;
  color: var(--gold);
}
.logo-text .sub {
  font-family: var(--f-mono);
  font-size: 0.55rem;
  letter-spacing: 0.18em;
  color: rgba(200, 160, 76, 0.6);
  margin-top: 4px;
}
.nav-links {
  display: flex; gap: 1.8rem; list-style: none;
}
.nav-links a {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--text-soft);
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: color 0.2s;
  position: relative;
}
.nav-links a::before {
  content: attr(data-num);
  color: var(--gold);
  margin-right: 0.5rem;
  font-weight: 500;
}
.nav-links a:hover, .nav-links a.current { color: var(--gold); }
.nav-lang {
  display: flex; gap: 0.2rem; align-items: center;
  font-family: var(--f-mono); font-size: 0.7rem;
  letter-spacing: 0.05em;
}
.nav-lang span {
  padding: 0.3rem 0.55rem; border-radius: 2px;
  cursor: pointer; transition: all 0.2s;
}
.nav-lang .active { background: var(--gold); color: var(--bg-deep); font-weight: 500; }
.nav-lang .inactive { color: var(--text-muted); }
.nav-lang .disabled { color: rgba(240, 235, 220, 0.3); }

/* === COMMON === */
.container {
  max-width: 1320px; margin: 0 auto;
  padding: 0 2.5rem;
  position: relative;
  z-index: 2;
}
.section-label {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: inline-flex; align-items: center; gap: 0.7rem;
}
.section-label::before {
  content: ""; width: 22px; height: 1px; background: var(--gold);
}
.center .section-label { justify-content: center; }
.center .section-label::before { display: none; }

h2.h-display {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  line-height: 1.25;
  letter-spacing: 0.02em;
  color: var(--text);
  margin-bottom: 1.2rem;
}
h2.h-display .gold {
  color: var(--gold);
  font-weight: 500;
  letter-spacing: 0.08em;
  padding: 0 0.05em;
}
.lede {
  font-size: 1rem;
  color: var(--text-soft);
  line-height: 1.9;
  max-width: 640px;
}
.center .lede { margin-left: auto; margin-right: auto; text-align: center; }

/* === HERO === */
.hero {
  min-height: 100vh;
  padding: 9rem 0 5rem;
  display: flex; align-items: center;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  top: 20%; right: -10%;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(200, 160, 76, 0.06) 0%, transparent 60%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero-eyebrow {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  margin-bottom: 2rem;
}
.hero h1 {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: clamp(2rem, 3.8vw, 3.4rem);
  line-height: 1.25;
  letter-spacing: 0.04em;
  color: var(--text);
  margin-bottom: 1.5rem;
}
.hero h1 .accent {
  color: var(--gold);
  font-weight: 500;
  letter-spacing: 0.12em;
}
.hero-twolines {
  margin: 1.8rem 0 2rem;
  padding-left: 1.5rem;
  border-left: 2px solid var(--gold);
}
.hero-twolines .line {
  font-family: var(--f-serif);
  font-size: 1.05rem;
  color: var(--text);
  margin-bottom: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  line-height: 1.5;
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  flex-wrap: wrap;
}
.hero-twolines .line:last-child { margin-bottom: 0; }
.hero-twolines .label {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  color: var(--gold);
  letter-spacing: 0.15em;
  white-space: nowrap;
}
.hero-statement {
  font-family: var(--f-serif);
  font-size: 0.92rem;
  color: var(--gold);
  font-style: italic;
  margin-top: 1.2rem;
  letter-spacing: 0.02em;
}
.hero-support {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--text-soft);
  max-width: 30rem;
  margin-bottom: 2.5rem;
}
.hero-cta-row {
  display: flex; gap: 1.5rem; align-items: center;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}
.btn-primary {
  font-family: var(--f-sans);
  font-size: 0.88rem;
  padding: 0.9rem 2rem;
  background: var(--gold);
  color: var(--bg-deep);
  text-decoration: none;
  border-radius: 2px;
  font-weight: 500;
  transition: all 0.3s;
  display: inline-flex; align-items: center; gap: 0.5rem;
  letter-spacing: 0.02em;
  border: none;
  cursor: pointer;
}
.btn-primary:hover { background: var(--gold-light); transform: translateX(2px); }
.btn-primary::after { content: "→"; transition: transform 0.3s; }
.btn-primary:hover::after { transform: translateX(3px); }
.btn-ghost {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--text-soft);
  text-decoration: none;
  letter-spacing: 0.05em;
  border-bottom: 1px solid rgba(240, 235, 220, 0.3);
  padding-bottom: 2px;
  transition: all 0.2s;
}
.btn-ghost:hover { color: var(--gold); border-bottom-color: var(--gold); }
.hero-locations {
  display: flex; gap: 2rem;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  color: var(--text-soft);
  letter-spacing: 0.1em;
}
.hero-locations span {
  display: inline-flex; align-items: center; gap: 0.6rem;
}
.dot { width: 5px; height: 5px; border-radius: 50%; background: var(--gold); }

.hero-card {
  background: var(--bg-mid);
  border: 1px solid var(--divider);
  border-radius: 3px;
  padding: 2.5rem;
  position: relative;
}
.hero-card::before {
  content: "INI / 001";
  position: absolute;
  top: -10px; left: 2rem;
  background: var(--bg-deep);
  padding: 0 0.8rem;
  font-family: var(--f-mono);
  font-size: 0.65rem;
  color: var(--gold);
  letter-spacing: 0.15em;
}
.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 2.5rem;
}
.stat {
  border-top: 1px solid var(--divider);
  padding-top: 1.2rem;
}
.stat-num {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 2.2rem;
  line-height: 1;
  color: var(--gold);
  display: flex; align-items: baseline; gap: 0.3rem;
}
.stat-num .unit {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-soft);
}
.stat-num.compact {
  font-size: 1.5rem;
}
.stat-label {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  margin-top: 0.8rem;
  text-transform: uppercase;
}

/* === TRACK OVERVIEW (首页 minimal) === */
.overview {
  padding: 6rem 0;
  background: var(--bg-mid);
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
}
.section-head { text-align: center; margin-bottom: 3.5rem; }
.section-head .section-label { justify-content: center; }
.section-head .section-label::before { display: none; }

.track-overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: 1080px;
  margin: 0 auto;
}
.track-card {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 3px;
  padding: 2.5rem 2.2rem;
  transition: all 0.3s;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}
.track-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 50px -25px rgba(0, 0, 0, 0.6);
  border-color: var(--gold);
}
.track-tag {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--gold);
  border-radius: 2px;
  color: var(--gold);
  margin-bottom: 1.3rem;
  align-self: flex-start;
}
.track-card h3 {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 1.5rem;
  color: var(--text);
  margin-bottom: 1rem;
  letter-spacing: 0.03em;
}
.track-card p {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--text-soft);
  margin-bottom: 1.8rem;
  flex-grow: 1;
}
.track-card-cta {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--gold);
  display: inline-flex; align-items: center; gap: 0.4rem;
  transition: gap 0.3s;
}
.track-card-cta::after { content: "→"; transition: transform 0.3s; }
.track-card:hover .track-card-cta::after { transform: translateX(4px); }

.independence-note {
  max-width: 880px;
  margin: 3rem auto 0;
  padding: 1.5rem 2rem;
  border: 1px dashed var(--gold-dim);
  border-radius: 3px;
  text-align: center;
  font-size: 0.92rem;
  color: var(--text-soft);
  line-height: 1.9;
}
.independence-note strong {
  color: var(--gold);
  font-weight: 500;
}

.see-more-cta {
  text-align: center;
  margin-top: 2.5rem;
}
.see-more-cta a {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  padding-bottom: 3px;
  transition: all 0.2s;
}
.see-more-cta a:hover { color: var(--gold-light); border-bottom-color: var(--gold-light); }
.see-more-cta a::after { content: " →"; }

/* === DETAIL HERO === */
.detail-hero {
  padding: 9rem 0 5rem;
  text-align: center;
  position: relative;
}
.detail-hero::before {
  content: "";
  position: absolute;
  top: 30%; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(200, 160, 76, 0.05) 0%, transparent 60%);
  pointer-events: none;
}
.detail-hero-inner {
  max-width: 760px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}
.detail-line {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.25em;
  color: var(--gold);
  margin-bottom: 1.5rem;
}
.detail-hero h1 {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: clamp(2rem, 3.6vw, 3.2rem);
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 1.2rem;
  letter-spacing: 0.04em;
}
.detail-hero h1 .gold { color: var(--gold); }
.mini-divider {
  width: 32px; height: 1px;
  background: var(--gold);
  margin: 1.5rem auto;
}
.detail-hero p {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-soft);
}

.track-section {
  padding: 4rem 0;
}
.track-section.alt {
  background: var(--bg-mid);
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
}
.track-section-label {
  text-align: center;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--gold);
  margin-bottom: 2.5rem;
}

/* 出海定义 */
.definition {
  max-width: 880px;
  margin: 0 auto;
  padding: 2.8rem 2.5rem;
  background: var(--bg-card);
  border-left: 2px solid var(--gold);
  border-radius: 2px;
  position: relative;
}
.definition::before {
  content: "认知前提";
  position: absolute;
  top: -10px; left: 2rem;
  background: var(--bg-deep);
  padding: 0 0.8rem;
  font-family: var(--f-mono);
  font-size: 0.65rem;
  color: var(--gold);
  letter-spacing: 0.18em;
}
.track-section.alt .definition::before {
  background: var(--bg-mid);
}
.definition-label {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  margin-bottom: 0.8rem;
}
.definition h3 {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 1.55rem;
  color: var(--text);
  margin-bottom: 1rem;
  letter-spacing: 0.03em;
  line-height: 1.4;
}
.definition h3 .gold {
  color: var(--gold);
  letter-spacing: 0.1em;
}
.def-explanation {
  font-size: 0.95rem;
  color: var(--text-soft);
  line-height: 1.9;
  margin-bottom: 2rem;
}
.def-explanation strong {
  color: var(--text);
  font-weight: 400;
}

.formula {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}
.formula-block {
  background: var(--bg-mid);
  border: 1px solid var(--divider);
  border-radius: 3px;
  padding: 1.3rem 1.5rem;
  min-width: 160px;
  text-align: center;
}
.formula-block.result {
  background: rgba(200, 160, 76, 0.12);
  border-color: var(--gold);
}
.formula-tag {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  margin-bottom: 0.6rem;
}
.formula-text {
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.5;
}
.formula-op {
  font-family: var(--f-serif);
  font-size: 1.6rem;
  color: var(--gold);
  font-weight: 400;
}

/* 客户阶段 */
.stages {
  max-width: 880px;
  margin: 0 auto;
}
.stage-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}
.stage {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 3px;
  padding: 1.8rem 1.6rem;
}
.track-section.alt .stage { background: var(--bg-deep); }
.stage-tag {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--gold);
  border-radius: 2px;
  color: var(--gold);
  margin-bottom: 1rem;
}
.stage h4 {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--text);
  margin-bottom: 0.7rem;
  letter-spacing: 0.02em;
  line-height: 1.45;
}
.stage p {
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--text-soft);
}

/* 服务对象 */
.audience {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  max-width: 740px;
  margin: 0 auto;
}
.audience-card {
  background: var(--gold-soft);
  border: 1px solid var(--divider);
  border-radius: 2px;
  padding: 1.2rem 1.4rem;
}
.audience-flag {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
.audience-list {
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.7;
}

/* 流程步骤 */
.process-wrap {
  max-width: 1180px;
  margin: 0 auto;
}
.process {
  display: grid;
  gap: 0.7rem;
  position: relative;
}
.process-5 { grid-template-columns: repeat(5, 1fr); }
.process-4 { grid-template-columns: repeat(4, 1fr); }
.process::before {
  content: "";
  position: absolute;
  top: 32px;
  left: 6%; right: 6%;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--gold-dim) 0, var(--gold-dim) 5px, transparent 5px, transparent 11px);
  z-index: 0;
}
.step {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 3px;
  padding: 1.4rem 0.6rem 1.2rem;
  text-align: center;
  transition: all 0.3s;
  position: relative;
  z-index: 1;
}
.track-section.alt .step { background: var(--bg-deep); }
.step:hover { border-color: var(--gold); transform: translateY(-3px); }
.step-icon {
  width: 40px; height: 40px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  margin: 0 auto 0.9rem;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-deep);
}
.step-icon svg { width: 18px; height: 18px; }
.step-num {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 0.62rem;
  padding: 0.12rem 0.5rem;
  border: 1px solid var(--gold-dim);
  border-radius: 2px;
  color: var(--gold);
  margin-bottom: 0.5rem;
  letter-spacing: 0.1em;
}
.step-title {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text);
  margin-bottom: 0.3rem;
  letter-spacing: 0.02em;
  line-height: 1.4;
}
.step-sub {
  font-size: 0.74rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 长流程横向滚动（Track 02 投资流程） */
.process-scroll {
  max-width: 1180px;
  margin: 0 auto;
  overflow-x: auto;
  padding: 0.5rem 0 1rem;
}
.process-scroll::-webkit-scrollbar {
  height: 6px;
}
.process-scroll::-webkit-scrollbar-track {
  background: var(--bg-mid);
  border-radius: 3px;
}
.process-scroll::-webkit-scrollbar-thumb {
  background: var(--gold-dim);
  border-radius: 3px;
}
.process-long {
  display: flex;
  gap: 0.6rem;
  min-width: max-content;
  padding: 0 0.5rem;
}
.step-mini {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 3px;
  padding: 1.1rem 1rem;
  min-width: 130px;
  text-align: center;
  transition: all 0.3s;
}
.track-section.alt .step-mini { background: var(--bg-deep); }
.step-mini:hover { border-color: var(--gold); }
.step-mini .step-num {
  margin-bottom: 0.5rem;
}
.step-mini-title {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--text);
  margin-bottom: 0.3rem;
}
.step-mini-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* 核心交付 */
.deliverables {
  max-width: 740px;
  margin: 0 auto;
}
.deliv-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}
.deliv-item {
  font-size: 0.88rem;
  padding: 0.85rem 1.2rem;
  background: var(--gold-soft);
  border-left: 2px solid var(--gold);
  border-radius: 2px;
  color: var(--text);
  line-height: 1.6;
}
.deliv-item.featured {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(200, 160, 76, 0.2) 0%, rgba(200, 160, 76, 0.08) 100%);
  border-left-width: 3px;
  padding: 1.2rem 1.5rem;
}
.deliv-item.featured .star {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--gold);
  letter-spacing: 0.18em;
  margin-right: 0.7rem;
}
.deliv-item.featured .featured-text {
  font-family: var(--f-serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.05em;
}

/* === FIT / NOT-FIT === */
.fit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  max-width: 1080px;
  margin: 0 auto;
}
.fit-card {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 3px;
  padding: 2rem 1.8rem;
}
.track-section.alt .fit-card { background: var(--bg-deep); }
.fit-card.unfit {
  background: var(--warn-soft);
  border-color: var(--warn-border);
}
.fit-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--gold);
  border-radius: 2px;
  color: var(--gold);
  margin-bottom: 1.2rem;
}
.fit-tag.unfit-tag {
  border-color: var(--warn-border);
  color: var(--warn-text);
}
.fit-card h4 {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--text);
  margin-bottom: 1.2rem;
  letter-spacing: 0.02em;
}
.fit-list {
  list-style: none;
}
.fit-list li {
  font-size: 0.9rem;
  color: var(--text-soft);
  line-height: 1.7;
  padding: 0.55rem 0 0.55rem 1.5rem;
  position: relative;
  border-bottom: 1px solid rgba(200, 160, 76, 0.08);
}
.fit-list li:last-child { border-bottom: none; }
.fit-list li::before {
  position: absolute;
  left: 0;
  top: 0.6rem;
  font-family: var(--f-mono);
  font-size: 0.85rem;
  font-weight: 500;
}
.fit-list.yes li::before { content: "+"; color: var(--gold); }
.fit-list.no li::before { content: "−"; color: var(--warn-text); }

/* === COOPERATION MODES === */
.modes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: 1080px;
  margin: 0 auto;
}
.mode {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-top: 2px solid var(--gold);
  border-radius: 3px;
  padding: 1.6rem 1.3rem;
  text-align: center;
}
.track-section.alt .mode { background: var(--bg-deep); }
.mode-num {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  color: var(--gold);
  letter-spacing: 0.18em;
  margin-bottom: 0.7rem;
}
.mode h5 {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 0.5rem;
  letter-spacing: 0.02em;
  line-height: 1.4;
}
.mode p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* === DIMENSION MATRIX (Track 02) === */
.matrix {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.2rem;
  max-width: 1080px;
  margin: 0 auto;
}
.matrix-col {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 3px;
  padding: 1.8rem 1.6rem;
}
.track-section.alt .matrix-col { background: var(--bg-deep); }
.matrix-col-head {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
.matrix-col h5 {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 1.1rem;
  color: var(--text);
  margin-bottom: 1.2rem;
  letter-spacing: 0.03em;
}
.matrix-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.matrix-list li {
  font-family: var(--f-mono);
  font-size: 0.74rem;
  padding: 0.35rem 0.7rem;
  background: var(--gold-soft);
  border: 1px solid var(--gold-dim);
  border-radius: 2px;
  color: var(--text);
  letter-spacing: 0.04em;
}

/* === BOUNDARY SECTION === */
.boundary {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.boundary-card {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 3px;
  padding: 2.2rem 2rem;
  position: relative;
}
.track-section.alt .boundary-card { background: var(--bg-deep); }
.boundary-label {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  margin-bottom: 1rem;
}
.boundary-card h4 {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 1.3rem;
  color: var(--text);
  margin-bottom: 1.2rem;
  letter-spacing: 0.03em;
}
.boundary-list {
  list-style: none;
}
.boundary-list li {
  font-size: 0.9rem;
  color: var(--text-soft);
  line-height: 1.7;
  padding: 0.5rem 0 0.5rem 1.3rem;
  position: relative;
  border-bottom: 1px solid rgba(200, 160, 76, 0.08);
}
.boundary-list li:last-child { border-bottom: none; }
.boundary-list li::before {
  content: "·";
  color: var(--gold);
  font-weight: 700;
  position: absolute;
  left: 0.4rem;
  top: 0.3rem;
}

/* === SELECTOR === */
.selector {
  max-width: 980px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.selector-card {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 3px;
  padding: 2rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s;
}
.track-section.alt .selector-card { background: var(--bg-deep); }
.selector-card:hover {
  border-color: var(--gold);
  transform: translateY(-3px);
}
.selector-q {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
}
.selector-trigger {
  font-family: var(--f-serif);
  font-size: 1.1rem;
  color: var(--text);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}
.selector-arrow {
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--gold);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--divider);
}
.selector-arrow::after { content: "→"; transition: transform 0.3s; }
.selector-card:hover .selector-arrow::after { transform: translateX(4px); }

/* === METHOD (solutions page) === */
.method-block {
  padding: 5rem 0;
}
.commitment-formula {
  max-width: 920px;
  margin: 0 auto 4rem;
  padding: 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 3px;
  position: relative;
}
.track-section.alt .commitment-formula { background: var(--bg-deep); }
.commitment-formula::before {
  content: "交付公式";
  position: absolute;
  top: -10px; left: 2rem;
  background: var(--bg-mid);
  padding: 0 0.8rem;
  font-family: var(--f-mono);
  font-size: 0.65rem;
  color: var(--gold);
  letter-spacing: 0.18em;
}
.commitment-formula-lede {
  text-align: center;
  font-size: 0.95rem;
  color: var(--text-soft);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.milestones {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5rem;
  max-width: 1080px;
  margin: 3rem auto 4rem;
  position: relative;
}
.milestones::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 10%; right: 10%;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--gold) 0, var(--gold) 5px, transparent 5px, transparent 11px);
  opacity: 0.4;
  z-index: 0;
}
.milestone {
  text-align: center;
  position: relative;
  z-index: 1;
  background: var(--bg-mid);
  padding: 0 1rem;
}
.milestone-dot {
  width: 56px; height: 56px;
  background: var(--bg-mid);
  border: 2px solid var(--gold);
  border-radius: 50%;
  margin: 0 auto 1.3rem;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: 0.85rem;
  color: var(--gold);
  letter-spacing: 0.05em;
  transition: all 0.3s;
}
.milestone:hover .milestone-dot {
  background: var(--gold);
  color: var(--bg-deep);
}
.milestone-title {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--text);
  margin-bottom: 0.7rem;
  letter-spacing: 0.02em;
}
.milestone-actions {
  list-style: none;
  text-align: left;
  display: inline-block;
}
.milestone-actions li {
  font-size: 0.85rem;
  color: var(--text-soft);
  line-height: 1.7;
  padding-left: 1rem;
  position: relative;
}
.milestone-actions li::before {
  content: "·";
  color: var(--gold);
  position: absolute;
  left: 0.3rem;
  font-weight: 700;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  max-width: 1080px;
  margin: 0 auto;
  padding-top: 3rem;
  border-top: 1px solid var(--divider);
}
.pillar-num {
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--gold);
  margin-bottom: 1rem;
}
.pillar h4 {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 1.25rem;
  color: var(--text);
  margin-bottom: 0.4rem;
  letter-spacing: 0.03em;
}
.pillar h4 .accent {
  color: var(--gold);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--f-mono);
}
.pillar p {
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--text-soft);
}

/* === ABOUT === */
.about-page {
  padding: 9rem 0 5rem;
}
.about-hero {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 5rem;
}
.about-hero h1 {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: clamp(2rem, 3.6vw, 3.2rem);
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 1.2rem;
  letter-spacing: 0.04em;
}
.about-hero h1 .gold { color: var(--gold); }

.about-body {
  max-width: 880px;
  margin: 0 auto;
}
.about-body p {
  font-size: 1.05rem;
  line-height: 2;
  color: var(--text-soft);
  margin-bottom: 1.6rem;
}
.about-body strong {
  color: var(--gold);
  font-weight: 500;
}
.about-tagline {
  max-width: 720px;
  margin: 4rem auto 0;
  padding: 2.5rem;
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
  text-align: center;
  font-family: var(--f-serif);
  font-size: 1.25rem;
  color: var(--text);
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0.03em;
}
.about-tagline .gold { color: var(--gold); }

.about-creds {
  padding: 5rem 0;
  background: var(--bg-mid);
  border-top: 1px solid var(--divider);
}
.credentials-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: 1080px;
  margin: 0 auto;
}
.cred {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 3px;
  padding: 1.8rem 1.4rem;
  text-align: center;
}
.cred-value {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 1.5rem;
  color: var(--gold);
  margin-bottom: 0.5rem;
  line-height: 1.25;
  letter-spacing: 0.03em;
}
.cred-value.small { font-size: 1.05rem; }
.cred-label {
  font-family: var(--f-mono);
  font-size: 0.66rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* === CROSS-LINK (减弱) === */
.cross-link {
  padding: 4rem 0;
  background: var(--bg-deep);
  border-top: 1px solid var(--divider);
}
.track-section.alt + .cross-link, .track-section + .cross-link { border-top: none; }
.cross-link-row {
  max-width: 880px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.cross-link-item {
  background: transparent;
  border: 1px solid var(--divider);
  border-radius: 2px;
  padding: 1.4rem 1.6rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: all 0.25s;
}
.cross-link-item:hover {
  border-color: var(--gold);
  background: var(--bg-mid);
}
.cross-link-meta {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}
.cross-link-title {
  font-family: var(--f-serif);
  font-size: 0.95rem;
  color: var(--text);
  letter-spacing: 0.02em;
}
.cross-link-arrow-small {
  font-family: var(--f-mono);
  font-size: 0.85rem;
  color: var(--gold);
}

/* === CONTACT === */
.contact-page {
  padding: 9rem 0 5rem;
}
.contact-hero {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 4rem;
}
.contact-hero h1 {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: clamp(2rem, 3.6vw, 3.2rem);
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 1.2rem;
  letter-spacing: 0.04em;
}
.contact-hero h1 .gold { color: var(--gold); }
.contact-hero p {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-soft);
  max-width: 580px;
  margin: 1.5rem auto 0;
}
.contact {
  padding: 6rem 0;
  background: var(--bg-mid);
  border-top: 1px solid var(--divider);
}
.contact-inner {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}
.contact h2 { text-align: center; }
.contact-lede {
  margin: 0 auto 3.5rem;
  max-width: 580px;
}
.office-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  margin-bottom: 3rem;
}
.office {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-radius: 3px;
  padding: 2rem 1.8rem;
  text-align: left;
}
.contact-page .office { background: var(--bg-mid); }
.office-flag {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  margin-bottom: 0.8rem;
}
.office-name {
  font-family: var(--f-serif);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--text);
  margin-bottom: 0.7rem;
  letter-spacing: 0.03em;
}
.office-addr {
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--text-soft);
}
.email-block {
  padding-top: 2.5rem;
  border-top: 1px solid var(--divider);
  text-align: center;
}
.email-label {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  margin-bottom: 0.7rem;
}
.email-addr {
  font-family: var(--f-serif);
  font-size: 1.35rem;
  color: var(--gold);
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
}
.email-addr:hover { color: var(--gold-light); }

footer {
  padding: 2.2rem 0;
  background: var(--bg-deep);
  border-top: 1px solid var(--divider);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  nav { padding: 1rem 1.2rem; }
  .nav-links { display: none; }
  .container { padding: 0 1.5rem; }
  .hero { padding: 7rem 0 4rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 3rem; }
  .track-overview-grid { grid-template-columns: 1fr; }
  .stage-grid, .audience { grid-template-columns: 1fr; }
  .process-5, .process-4 { grid-template-columns: 1fr; }
  .process::before { display: none; }
  .deliv-list { grid-template-columns: 1fr; }
  .milestones { grid-template-columns: 1fr; }
  .milestones::before { display: none; }
  .pillars { grid-template-columns: 1fr; gap: 2.5rem; }
  .fit-grid, .boundary, .selector { grid-template-columns: 1fr; }
  .modes-grid { grid-template-columns: 1fr 1fr; }
  .matrix { grid-template-columns: 1fr; }
  .office-grid { grid-template-columns: 1fr; }
  .credentials-grid { grid-template-columns: 1fr 1fr; }
  .cross-link-row { grid-template-columns: 1fr; }
  .formula { flex-direction: column; }
  .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }
  .detail-hero { padding: 7rem 0 3rem; }
  .track-section, .overview, .method-block, .about-page, .about-creds, .contact, .contact-page, .cross-link { padding: 4rem 0; }
}