/* ════════════════════════════════════════════════════════════
   DESIGN TOKENS — 主色蓝 #1D4E89 + 灰阶辅色
   ════════════════════════════════════════════════════════════ */
:root {
  /* paper bg — 纯白 + 微差灰白层次 */
  --paper:        #FFFFFF;   /* pure white — main bg */
  --paper-2:      #F7F7F5;   /* very subtle off-white for sections */
  --paper-3:      #EFEFEC;   /* card/surface */
  --paper-dark:   #1A1A1A;

  /* 灰阶 grays */
  --ink:          #1A1A1A;   /* near black */
  --ink-2:        #3A3A38;   /* 深灰 */
  --ink-3:        #5C5C58;   /* 中深灰 */
  --ink-4:        #8A8A82;   /* 中灰 */
  --ink-5:        #B0B0A6;   /* 浅灰 */
  --gray-6:       #D0CFC4;
  --gray-7:       #E2E0D5;

  /* 主色蓝 — primary blue */
  --blue:         #002850;
  --blue-2:       #2A5F9E;
  --blue-3:       #3D72B0;
  --blue-4:       #5A8AC2;   /* 浅蓝 */
  --blue-5:       #B5CADD;   /* 极浅蓝 wash */
  --blue-deep:    #14365E;
  --blue-6:       #002850;

  /* 同色系语义别名（保留旧变量名以兼容样式） */
  --structure:    var(--blue-6);
  --structure-2:  var(--blue-2);
  --growth:       var(--ink-3);    /* 生长 → 中深灰 */
  --growth-2:     var(--ink-2);
  --bloom:        var(--blue);     /* bloom → blue 强调 */
  --bloom-2:      var(--blue-4);

  /* lines */
  --line:         rgba(26,26,26,0.12);
  --line-2:       rgba(26,26,26,0.22);
  --line-soft:    rgba(26,26,26,0.06);
  --blue-line:    rgba(29,78,137,0.18);
  --blue-soft:    rgba(29,78,137,0.08);

  /* dark section */
  --night:        #14181C;
  --night-2:      #1F252B;

  /* spacing */
  --gutter:       clamp(20px, 4vw, 64px);
  --section:      clamp(50px, 12vw, 100px);
}

/* ════════════════════════════════════════════════════════════
   RESET & BASE
   ════════════════════════════════════════════════════════════ */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.7;
  font-weight: 300;
  font-size: 15px;
  letter-spacing: 0.02em;
  overflow-x: hidden;
  position: relative;
}

/* 白底干净纯粹，不再使用纸张纹理 */
body::before { display: none; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

::selection { background: var(--structure); color: var(--paper); }

/* ════════════════════════════════════════════════════════════
   TYPOGRAPHY HELPERS
   ════════════════════════════════════════════════════════════ */
.eyebrow {
  font-family: var(--sans-cn);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.32em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.eyebrow-cn {
  font-family: var(--sans-cn);
  font-size:20px;
  letter-spacing: 0.5em;
  color: var(--ink-3);
  text-transform: uppercase;
  font-weight: 500;
}

.rule       { width: 100%; height: 1px; background: var(--line); border: 0; }
.rule-soft  { width: 100%; height: 1px; background: var(--line-soft); border: 0; }
.rule-thick { width: 100%; height: 2px; background: var(--ink); border: 0; }

.dot { display: inline-block; width: 4px; height: 4px; border-radius: 50%; background: currentColor; vertical-align: middle; margin: 0 .6em; }

/* container */
.wrap { max-width: 1320px; margin: 0 auto; padding: 0 var(--gutter); position: relative; }

/* ════════════════════════════════════════════════════════════
   NAV
   ════════════════════════════════════════════════════════════ */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--gutter);
  max-width: 1320px; margin: 0 auto;
}
.brand-mark {
  display: flex; align-items: baseline; gap: 6px;
  font-family: var(--sans-cn);
  font-weight: 700;
}
.brand-en  { font-family: var(--sans-cn); font-size: 18px; letter-spacing: 0.32em; color: var(--ink-2); font-weight: 600;  color: var(--blue-6);}
.brand-cn  { font-size: 18px; letter-spacing: 0.15em; color: var(--blue-6); font-weight: 500;}

.nav-links {
  display: flex; gap: 36px; align-items: center;
  font-family: var(--sans-cn); font-size: 13px; font-weight: 400;
  letter-spacing: 0.12em; color: var(--ink-2);
}
.nav-links a { position: relative; padding: 4px 0; transition: color .3s; }
.nav-links a::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--ink); transform: scaleX(0); transform-origin: right;
  transition: transform .4s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }

.nav-cta {
  background: var(--structure); color: var(--paper);
  padding: 10px 20px; border-radius: 0;
  font-family: var(--sans-cn); font-size: 12px; font-weight: 500;
  letter-spacing: 0.2em;
  transition: all .3s; display: inline-flex; align-items: center; gap: 8px;
}
.nav-cta:hover { background: var(--structure); transform: translate(2px, -2px); box-shadow: -4px 4px 0 var(--ink); }
.nav-cta::after { content: '→'; font-family: var(--sans-cn); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 6px;
  cursor: pointer;
  background: transparent;
  border: none;
  z-index: 110;
}
.nav-toggle span {
  width: 100%;
  height: 2px;
  background: var(--ink);
  transition: all .3s ease;
  border-radius: 1px;
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(7px, -6px); }

.mobile-nav {
  position: fixed;
  top: 70px;
  right: -100%;
  width: 200px;
  max-height: calc(100vh - 90px);
  background: var(--paper);
  box-shadow: -4px 4px 20px rgba(26,26,26,0.15);
  border-radius: 8px 0 0 8px;
  z-index: 105;
  transition: right .35s ease;
  display: flex;
  flex-direction: column;
}
.mobile-nav.active { right: 0; }

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  padding: 16px;
  gap: 4px;
}
.mobile-nav-links a {
  padding: 16px 20px;
  font-family: var(--sans-cn);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--ink-2);
  transition: all .25s;
  border-radius: 4px;
}
.mobile-nav-links a:hover {
  background: var(--paper-2);
  color: var(--ink);
}
.mobile-nav-cta {
  background: var(--structure);
  color: var(--paper) !important;
  margin-top: 16px;
  text-align: center;
}
.mobile-nav-cta:hover {
  background: var(--ink) !important;
}

@media (max-width: 800px) {
  body { padding-top: 70px; }
  .nav { position: fixed; width: 100%; }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
}

/* ════════════════════════════════════════════════════════════
   HERO SLIDER
   ════════════════════════════════════════════════════════════ */
.hero-slider {
  position: relative;
  width: 100vw;
  aspect-ratio: 1920 / 1080;
  overflow: hidden;
  background: var(--paper-2);
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
}

.slider-track {
  position: relative;
  width: 100%;
  height: 100%;
}

.slider-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s ease-in-out, visibility 0.6s ease-in-out;
}

.slider-slide.active {
  opacity: 1;
  visibility: visible;
}

.slider-link {
  display: block;
  width: 100%;
  height: 100%;
}

.slider-image {
  width: 100%;
  height: 100%;
  margin: 0;
}

.slider-image img,
.slider-image source {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.slider-content {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    to bottom,
    rgba(26, 26, 26, 0.3) 0%,
    rgba(26, 26, 26, 0.1) 50%,
    rgba(26, 26, 26, 0.4) 100%
  );
  pointer-events: none;
}

.slider-content-inner {
  text-align: center;
  padding: 0 var(--gutter);
  max-width: 900px;
}

.slider-title {
  font-family: var(--sans-cn);
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 600;
  color: var(--paper);
  margin: 0 0 16px;
  letter-spacing: 0.05em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.slider-subtitle {
  font-family: var(--sans-cn);
  font-size: clamp(16px, 2vw, 24px);
  font-weight: 400;
  color: var(--paper);
  margin: 0;
  letter-spacing: 0.08em;
  opacity: 0.9;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

/* Slider Navigation Buttons */
.slider-prev,
.slider-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  color: var(--ink-3);
}


.slider-prev { left: 24px; }
.slider-next { right: 24px; }

.slider-prev svg,
.slider-next svg {
  width: 50px;
  height: 50px;
}

/* Slider Dots */
.slider-dots {
  position: absolute;
  bottom: 3px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 12px;
  padding: 8px 16px;
  border-radius: 24px;
}

.slider-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink-4);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
}

.slider-dot:hover {
  background: var(--ink-2);
}

.slider-dot.active {
  background: var(--blue);
  width: 6px;
  border-radius: 6px;
}

/* Slider Responsive */
@media (max-width: 768px) {
  .slider-prev,
  .slider-next {
    width: 40px;
    height: 40px;
  }

  .slider-prev { left: 12px; }
  .slider-next { right: 12px; }

  .slider-prev svg,
  .slider-next svg {
    width: 20px;
    height: 20px;
  }

  .slider-dots {
    bottom: 16px;
    gap: 8px;
    padding: 6px 12px;
  }

  .slider-dot {
    width: 6px;
    height: 6px;
  }

  .slider-dot.active {
    width: 6px;
  }

  .slider-title {
    font-size: clamp(24px, 4vw, 36px);
  }

  .slider-subtitle {
    font-size: clamp(14px, 1.8vw, 18px);
  }
}

/* ════════════════════════════════════════════════════════════
   HERO
   ════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  padding: clamp(40px, 8vw, 96px) 0 clamp(60px, 10vw, 120px);
  min-height: calc(100vh - 70px);
  display: flex; flex-direction: column; justify-content: space-between;
  overflow: hidden;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
  margin-bottom: clamp(40px, 6vw, 72px);
}
.hero-meta-item {
  display: flex; flex-direction: column; gap: 2px;
}
.hero-meta-label {
  font-family: var(--sans-cn); font-size: 11px; letter-spacing: 0.15em; color: var(--ink-4);
}
.hero-meta-value {
  font-family: var(--sans-cn); font-size: 13px; color: var(--ink-2); letter-spacing: 0.05em;
  font-weight: 500;
}

.hero-title-block { position: relative; z-index: 2; }

.hero-eyebrow-row {
  display: flex; align-items: center; gap: 18px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.hero-circle {
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--ink); position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--sans-cn); font-size: 13px;
}
.hero-circle::after {
  content:''; position: absolute; inset: 4px; border-radius: 50%;
  border: 1px dashed var(--line-2);
  animation: rotate 24s linear infinite;
}
@keyframes rotate { to { transform: rotate(360deg); } }

.hero-title {
  font-family: var(--sans-cn); font-weight: 700;
  font-size: clamp(52px, 10vw, 156px);
  line-height: 0.96;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 28px;
}
.hero-title .ital {
  font-family: var(--sans-cn);
  font-weight: 300;
  font-size: 0.55em;
  color: var(--ink-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: inline-block;
  transform: translateY(-0.15em);
}
.hero-title .underline-ink {
  display: inline-block;
  position: relative;
}
.hero-title .underline-ink::after {
  content:''; position: absolute; left: 4px; right: 4px; bottom: 8px;
  height: 6px; background: var(--growth); opacity: 0.55; z-index: -1;
}

.hero-sub-cn {
  font-family: var(--sans-cn); font-weight: 400;
  font-size: clamp(16px, 2vw, 22px);
  letter-spacing: 0.45em;
  color: var(--ink-2);
  margin-bottom: 12px;
  padding-left: 4px;
}
.hero-sub-en {
  font-family: var(--sans-cn);
  font-size: clamp(14px, 1.4vw, 18px);
  letter-spacing: 0.32em;
  color: var(--ink-3);
  margin-bottom: 56px;
  padding-left: 4px;
}

.hero-bottom {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  gap: 40px;
}
.hero-quote {
  font-family: var(--sans-cn); font-weight: 400;
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 1.85;
  color: var(--ink-2);
  max-width: 420px;
  border-left: 2px solid var(--ink);
  padding-left: 22px;
}
.hero-quote em {
  font-family: var(--sans-cn); font-style: normal;
  color: var(--structure);
}

.hero-cta-stack {
  display: flex; flex-direction: column; gap: 14px;
  align-items: flex-end; justify-self: end;
}
.hero-cta-primary {
  background: var(--structure); color: var(--paper);
  padding: 18px 32px;
  font-family: var(--sans-cn); font-size: 14px; font-weight: 500;
  letter-spacing: 0.25em;
  display: inline-flex; align-items: center; gap: 14px;
  transition: all .3s;
  position: relative;
}
.hero-cta-primary:hover {
  background: var(--structure);
  transform: translate(3px, -3px);
  box-shadow: -6px 6px 0 var(--ink);
}
.hero-cta-primary .arrow-en {
  font-family: var(--sans-cn); font-size: 18px;
}
.hero-cta-secondary {
  font-family: var(--sans-cn); font-size: 13px;
  color: var(--ink-3);
  border-bottom: 1px solid var(--line-2);
  padding-bottom: 4px;
  letter-spacing: 0.05em;
  transition: color .3s, border-color .3s;
}
.hero-cta-secondary:hover { color: var(--ink); border-color: var(--ink); }

@media (max-width: 768px) {
  .hero-meta { grid-template-columns: repeat(2, 1fr); gap: 12px 24px; }
  .hero-bottom { grid-template-columns: 1fr; row-gap: 28px; }
  .hero-bottom > div:nth-child(2):empty { display: none; }
  .hero-cta-stack { align-items: flex-start; justify-self: start; }
}



/* ════════════════════════════════════════════════════════════
   MANIFESTO
   ════════════════════════════════════════════════════════════ */
.manifesto {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  padding: var(--section) 0;
  position: relative;
}
.manifesto-grid {
  display: grid;
  grid-template-columns: 1fr 2.4fr;
  gap: clamp(40px, 6vw, 100px);
  align-items: start;
}
.manifesto-aside .eyebrow {
  display: block; margin-bottom: 4px;
}
.manifesto-aside .eyebrow-cn {
  display: block; margin-bottom: 16px;
}
.manifesto-mark {
  width: 60px; height: 1px;
  background: var(--ink);
  margin: 16px 0 16px;
}
.manifesto-meta {
  font-family: var(--sans-cn); font-size: 13px; color: var(--ink-3);
  line-height: 1.9;
}

.manifesto-text {
  font-family: var(--sans-cn);
  font-weight: 300;
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.7;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.manifesto-text p { margin-bottom: 1.4em; }
.manifesto-text p:last-child { margin-bottom: 0; }
.manifesto-text strong {
  font-weight: 700;
  background: linear-gradient(to top, var(--bloom) 28%, transparent 28%);
  padding: 0 4px;
}
.manifesto-text em {
  font-family: var(--sans-cn); font-style: normal;
  color: var(--structure);
  font-size: 0.92em;
  letter-spacing: 0.04em;
}

@media (max-width: 768px) {
  .manifesto-grid { grid-template-columns: 1fr; }
}

/* ════════════════════════════════════════════════════════════
   PILLARS — 3 core principles
   ════════════════════════════════════════════════════════════ */
.pillars {
  padding: var(--section) 0;
  border-top: 1px solid var(--line);
}
.pillars-head {
  display: flex; justify-content: space-between; align-items: end;
  margin-bottom: 80px; flex-wrap: wrap; gap: 20px;
}
.pillars-head h2 {
  font-family: var(--sans-cn); font-weight: 600;
  font-size: clamp(32px, 4vw, 56px);
  letter-spacing: 0.04em;
  line-height: 1.2;
  max-width: 760px;
}
.pillars-head h2 em {
  font-family: var(--sans-cn); font-style: normal;
  font-weight: 400; color: var(--ink-3);
  font-size: 0.6em;
  display: block; margin-top: 12px; letter-spacing: 0.18em;
}

.pillar-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 0;
}
.pillar {
  padding: 48px 36px 56px;
  border-right: 1px solid var(--line);
  position: relative;
  transition: background .4s;
}
.pillar:last-child { border-right: none; }
.pillar:hover { background: var(--paper); }

.pillar-num {
  font-family: var(--sans-cn);
  font-size: 14px;
  letter-spacing: 0.3em;
  color: var(--ink-4);
  margin-bottom: 24px;
}
.pillar-icon {
  width: 56px; height: 56px;
  margin-bottom: 28px;
}
.pillar-icon svg { width: 100%; height: 100%; }

.pillar-title {
  font-family: var(--sans-cn);
  font-weight: 600;
  font-size: 26px;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.pillar-title-en {
  font-family: var(--sans-cn); font-size: 16px;
  color: var(--ink-3);
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}
.pillar-desc {
  font-family: var(--sans-cn);
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.95;
  font-weight: 300;
}
.pillar:nth-child(1) .pillar-icon svg { color: var(--blue); }
.pillar:nth-child(2) .pillar-icon svg { color: var(--ink-2); }
.pillar:nth-child(3) .pillar-icon svg { color: var(--blue-deep); }

@media (max-width: 768px) {
  .pillar-grid { grid-template-columns: 1fr; }
  .pillar { border-right: none; border-bottom: 1px solid var(--line); }
  .pillar:last-child { border-bottom: none; }
}

/* ════════════════════════════════════════════════════════════
   WHY-US — why choose 本来有异 (4 value props)
   ════════════════════════════════════════════════════════════ */
.whyus {
  padding: var(--section) 0;
  background: var(--paper-2);
  border-top: 1px solid var(--line);
}
.whyus-head {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: clamp(40px, 6vw, 100px);
  margin-bottom: 72px;
  align-items: end;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--ink);
}
.whyus-head-left .eyebrow { display: block; margin-bottom: 4px; }
.whyus-head-left .eyebrow-cn { display: block; }
.whyus-head h2 {
  font-family: var(--sans-cn); font-weight: 700;
  font-size: clamp(32px, 4.5vw, 56px);
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink);
}
.whyus-head h2 em {
  font-family: var(--sans-cn); font-weight: 200;
  color: var(--ink-3); font-size: 0.55em;
  letter-spacing: 0.06em;
  display: block; margin-top: 16px;
  text-transform: uppercase;
}

.whyus-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--line);
}
@media (max-width: 768px) { .whyus-grid { grid-template-columns: 1fr; } }

.whyus-item {
  padding: clamp(32px, 4vw, 48px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: background .35s;
}
.whyus-item:nth-child(2n) { border-right: none; }
.whyus-item:nth-child(n+3) { border-bottom: none; }
@media (max-width: 768px) {
  .whyus-item { border-right: none; border-bottom: 1px solid var(--line); }
  .whyus-item:last-child { border-bottom: none; }
}
.whyus-item:hover { background: var(--paper-2); }
.whyus-item:hover .whyus-num { color: var(--blue); }

.whyus-num {
  font-family: var(--sans-cn); font-weight: 200;
  font-size: clamp(46px, 5.5vw, 72px);
  line-height: 1;
  color: var(--ink-4);
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  transition: color .35s;
}
.whyus-formula {
  font-family: var(--sans-cn); font-weight: 700;
  font-size: clamp(17px, 1.7vw, 22px);
  letter-spacing: 0.04em;
  color: var(--ink);
  margin-bottom: 12px;
  line-height: 1.4;
}
.whyus-formula .x {
  color: var(--blue);
  font-weight: 300;
  margin: 0 6px;
  font-size: 0.85em;
}
.whyus-tagline {
  font-family: var(--sans-cn); font-weight: 500;
  font-size: 13px;
  color: var(--ink-3);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.whyus-desc {
  font-family: var(--sans-cn); font-weight: 300;
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.95;
  letter-spacing: 0.02em;
}

@media (max-width: 768px) {
  .whyus-head { grid-template-columns: 1fr; }
}

/* ════════════════════════════════════════════════════════════
   ESSENCE — 本来有异 brand name philosophy
   ════════════════════════════════════════════════════════════ */
.essence {
  padding: var(--section) 0;
  border-top: 1px solid var(--line);
  color: var(--ink);
  position: relative;
  overflow: hidden;
}
.essence::before {
  content:''; position: absolute; inset: 0;
  pointer-events: none;
}
.essence-inner { position: relative; z-index: 2; }

.essence-eyebrow {
  font-family: var(--sans-cn); font-weight: 500;
  font-size: 11px; letter-spacing: 0.4em; text-transform: uppercase;
  color: var(--blue-4);
  margin-bottom: 32px; text-align: center;
}

.essence-headline {
  font-family: var(--sans-cn); font-weight: 700;
  font-size: clamp(30px, 9vw, 80px);
  text-align: center;
  letter-spacing: 0.02em;
  line-height: 1.1;
  margin-bottom: 24px;
  color: var(--ink);
}
.essence-headline .ben { color: var(--ink); }
.essence-headline .pivot {
  color: var(--blue);
  font-weight: 300;
  font-size: 0.85em;
  margin: 0 -0.2em;
}
.essence-headline .yi { color: var(--ink); }

.essence-headline-en {
  font-family: var(--sans-cn); font-weight: 200;
  font-size: clamp(15px, 1.6vw, 22px);
  text-align: center;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: clamp(60px, 8vw, 100px);
}

.essence-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(24px, 3vw, 48px);
  max-width: 1400px; margin: 0 auto;
  padding: 0 var(--gutter);
}
@media (max-width: 1024px) { .essence-cards { grid-template-columns: 1fr 1fr; } }
@media (max-width: 768px) { .essence-cards { grid-template-columns: 1fr; } }

.essence-card {
  padding: 40px 36px 44px;
  background: var(--paper);
  border: 1px solid var(--line);
  position: relative;
}
.essence-card::before {
  content:''; position: absolute; top: -1px; left: -1px; right: -1px;
  height: 2px; background: var(--blue);
}
.essence-card-char {
  font-family: var(--sans-cn); font-weight: 700;
  font-size: clamp(30px, 8vw, 80px);
  line-height: 1;
  color: var(--blue);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.essence-card-title {
  font-family: var(--sans-cn); font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.essence-card-meta {
  font-family: var(--sans-cn); font-weight: 500;
  font-size: 14px;
  color: var(--blue);
  letter-spacing: 0.04em;
  margin-bottom: 18px;
  line-height: 1.6;
}
.essence-card-desc {
  font-family: var(--sans-cn); font-weight: 300;
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.95;
  letter-spacing: 0.02em;
}
.essence-card-desc strong {
  color: var(--ink); font-weight: 500;
}

.essence-mission {
  margin-top: clamp(80px, 10vw, 120px);
  text-align: center;
  max-width: 760px; margin-left: auto; margin-right: auto;
  padding: 0 var(--gutter);
}
.essence-mission-eyebrow {
  font-family: var(--sans-cn); font-weight: 500;
  font-size: 11px; letter-spacing: 0.4em; text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 24px;
}
.essence-mission-text {
  font-family: var(--sans-cn); font-weight: 300;
  font-size: clamp(18px, 2.2vw, 28px);
  line-height: 1.7;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.essence-mission-text strong {
  font-weight: 700; color: var(--ink);
}
.essence-mission-text em {
  font-style: normal;
  color: var(--blue);
  font-weight: 500;
}

/* ════════════════════════════════════════════════════════════
   GROWTH FRAMEWORK — the 10 modules visualization
   ════════════════════════════════════════════════════════════ */
.framework {
  padding: var(--section) 0;
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.framework-head {
  text-align: center;
  margin-bottom: 80px;
}
.framework-head .eyebrow { margin-bottom: 12px; display: inline-block; }
.framework-head h2 {
  font-family: var(--sans-cn); font-weight: 700;
  font-size: clamp(36px, 5.5vw, 76px);
  line-height: 1.1;
  letter-spacing: 0.04em;
  margin-bottom: 18px;
}


.framework-sub {
  font-family: var(--sans-cn); font-size: clamp(16px, 1.8vw, 22px);
  color: var(--ink-3);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.framework-stages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-top: 60px;
}
.stage {
  padding: 32px 28px 36px;
  border-right: 1px solid var(--line);
  position: relative;
}
.stage:last-child { border-right: none; }
.stage-bar {
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
}
.stage:nth-child(1) .stage-bar { background: var(--blue-deep); }
.stage:nth-child(2) .stage-bar { background: var(--blue); }
.stage:nth-child(3) .stage-bar { background: var(--blue-3); }
.stage:nth-child(4) .stage-bar { background: var(--blue-4); }

.stage-head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 8px;
}
.stage-name-cn {
  font-family: var(--sans-cn); font-weight: 600;
  font-size: 18px; letter-spacing: 0.18em;
}
.stage-num {
  font-family: var(--sans-cn);
  font-size: 14px; color: var(--ink-4); letter-spacing: 0.15em;
}
.stage-name-en {
  font-family: var(--sans-cn); font-size: 13px; color: var(--ink-3);
  letter-spacing: 0.08em;
  margin-bottom: 24px;
  border-bottom: 1px dashed var(--line-2);
  padding-bottom: 14px;
}

.modules-row {
  display: flex; gap: 12px; margin-bottom: 18px;
}
.module-cell {
  flex: 1;
  display: flex; flex-direction: column; align-items: center;
  text-align: center;
  position: relative;
}
.module-icon-wrap {
  width: 58px; height: 58px;
  border-radius: 50%;
  background: var(--paper-3);
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 12px;
  transition: transform .35s, box-shadow .35s;
}
.module-cell:hover .module-icon-wrap {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(26,26,26,0.08);
}
.module-icon-wrap svg { width: 26px; height: 26px; }

.module-label-num {
  font-family: var(--sans-cn);
  font-size: 11px;
  color: var(--ink-4);
  letter-spacing: 0.15em;
  margin-bottom: 4px;
}
.module-label-cn {
  font-family: var(--sans-cn); font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.12em;
  margin-bottom: 2px;
}
.module-label-en {
  font-family: var(--sans-cn); font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}
.module-desc {
  font-family: var(--sans-cn);
  font-size: 11px;
  color: var(--ink-3);
  line-height: 1.6;
  letter-spacing: 0.02em;
  font-weight: 300;
}

.framework-cta {
  text-align: center;
  margin-top: 64px;
}
.framework-cta-btn {
  display: inline-flex; align-items: center; gap: 16px;
  padding: 22px 40px;
  background: var(--structure);
  color: var(--paper);
  font-family: var(--sans-cn);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.3em;
  transition: all .35s;
  position: relative;
}
.framework-cta-btn::before {
  content:'';
  position: absolute; inset: -8px; border: 1px solid var(--structure);
  z-index: -1;
  transition: inset .35s;
}
.framework-cta-btn:hover { transform: translate(4px, -4px); box-shadow: -8px 8px 0 var(--ink); }
.framework-cta-btn:hover::before { inset: -12px; }
.framework-cta-btn .arrow-en { font-family: var(--sans-cn); font-size: 22px; }
.framework-cta-note {
  font-family: var(--sans-cn); font-size: 13px; color: var(--ink-3);
  margin-top: 18px;
  letter-spacing: 0.05em;
}

@media (max-width: 1024px) {
  .framework-stages { grid-template-columns: repeat(2, 1fr); }
  .stage:nth-child(2) { border-right: none; }
  .stage:nth-child(1), .stage:nth-child(2) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 600px) {
  .framework-stages { grid-template-columns: 1fr; }
  .stage { border-right: none; border-bottom: 1px solid var(--line); }
}

/* ════════════════════════════════════════════════════════════
   SERVICES — what we do
   ════════════════════════════════════════════════════════════ */
.services {
  border-top: 1px solid var(--line);
  color: var(--ink);
  padding: var(--section) 0;
  position: relative;
}
.services::before {
  content:''; position: absolute; inset: 0;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
  opacity: 0.08; pointer-events: none;
}

.services-head {
  margin-bottom: 80px;
  display: grid; grid-template-columns: 1fr 1.5fr;
  gap: 60px; align-items: end;
}
.services-head .eyebrow { color: var(--ink-5); }
.services-head h2 {
  font-family: var(--sans-cn); font-weight: 600;
  font-size: clamp(36px, 5vw, 64px);
  letter-spacing: 0.04em;
  line-height: 1.2;
  color: var(--ink);
  margin-top: 16px;
  word-break: keep-all;
}
.services-head h2 .ital {
  font-family: var(--sans-cn); font-style: normal;
  font-weight: 400;
  color: var(--bloom-2);
  font-size: 0.85em;
}
.services-head-sub {
  font-family: var(--sans-cn);
  font-size: 16px; color: var(--ink-3);
  font-weight: 300;
  line-height: 1.95;
  border-left: 1px solid var(--line);
  padding-left: 24px;
}

.service-list {
  display: grid; grid-template-columns: 1fr;
  border-top: 1px solid var(--line);
}
.service-row {
  display: grid;
  grid-template-columns: 80px 1.5fr 2fr 1fr;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
  transition: padding-left .4s, color .4s;
  cursor: default;
  position: relative;
}
.service-row:hover {
  padding-left: 20px;
}
.service-row::after {
  content:''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 0; height: 1px; background: var(--bloom);
  transition: width .4s ease;
}
.service-row:hover::after { width: 12px; }

.service-num {
  font-family: var(--sans-cn);
  font-size: 20px;
  letter-spacing: 0.15em;
  color: var(--ink-5);
}
.service-name {
  display: flex; flex-direction: column; gap: 2px;
}
.service-name-cn {
  font-family: var(--sans-cn); font-weight: 500;
  font-size: 22px;
  letter-spacing: 0.12em;
  color: var(--ink);
}
.service-name-en {
  font-family: var(--sans-cn); font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}
.service-desc {
  font-family: var(--sans-cn);
  font-size: 16px;
  color: var(--ink-2);
  font-weight: 300;
  line-height: 1.85;
}
.service-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
  font-family: var(--sans-cn); font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
}
.service-tags span::after { content: ' · '; opacity: 0.4; }
.service-tags span:last-child::after { content: ''; }

@media (max-width: 900px) {
  .services-head { grid-template-columns: 1fr; }
  .service-row {
    grid-template-columns: 50px 1fr;
    grid-template-rows: auto auto;
    gap: 14px 20px;
  }
  .service-num { grid-row: span 2; align-self: start; }
  .service-desc { grid-column: 2; }
  .service-tags { display: none; }
}

/* ════════════════════════════════════════════════════════════
   WORKS — case studies (cover-style)
   ════════════════════════════════════════════════════════════ */
.works {
  padding: var(--section) 0;
  background: var(--paper-2);
  border-top: 1px solid var(--line);
}
.works-head {
  display: grid; grid-template-columns: 1fr auto;
  align-items: end; gap: 24px;
  margin-bottom: 64px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--ink);
}
.works-head h2 {
  font-family: var(--sans-cn); font-weight: 700;
  font-size: clamp(40px, 6vw, 65px);
  letter-spacing: 0.02em;
  line-height: 1;
}
.works-head h2 .ital {
  font-family: var(--sans-cn); font-style: normal;
  font-weight: 400; font-size: 0.6em; color: var(--ink-3);
  letter-spacing: 0.18em;
  margin-left: 16px;
}
.works-head-meta {
  font-family: var(--sans-cn); font-size: 14px;
  color: var(--ink-3);
  text-align: right;
  line-height: 1.7;
}
.works-head-meta strong { color: var(--ink); font-style: normal; font-weight: 500; }

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

@media (min-width: 1025px) {
  .works .wrap {
    max-width: 80%;
  }
}

.work-card {
  position: relative;
  background: var(--paper-3);
  border: 1px solid var(--line);
  overflow: hidden;
  cursor: pointer;
  transition: transform .4s, box-shadow .4s;
  display: flex;
  flex-direction: column;
}
.work-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(26,26,26,0.1); }

.work-card-large { grid-column: span 1; grid-row: span 2; aspect-ratio: 4/6; }

.work-cover {
  flex: 1;
  position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  width: 100%;
}
.work-cover img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}
.work-cover svg { width: 90%; height: 90%; }

.work-info {
  background: var(--paper);
  padding: 20px 22px;
  display: flex; flex-direction: column; gap: 6px;
}
.work-category {
  font-family: var(--sans-cn);
  font-size: 11px;
  color: var(--ink);
  letter-spacing: 0.12em;
}
.work-title {
  font-family: var(--sans-cn);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: 0.06em;
  margin: 0;
  line-height: 1.3;
}
.work-title-en {
  font-family: var(--sans-cn);
  font-size: 12px;
  color: var(--ink);
  letter-spacing: 0.04em;
}
.work-meta {
  display: flex;
  align-items: baseline;
  font-family: var(--sans-cn);
  font-size: 11px;
  color: var(--ink);
  letter-spacing: 0.04em;
  margin-top: 4px;
  gap: 4px;
}
.work-meta .dot {
  display: inline;
  width: auto;
  height: auto;
  border-radius: 0;
  background: none;
  vertical-align: baseline;
  margin: 0;
}

/* work cover backgrounds — 蓝灰色系组合 */
.cover-bg-1 { background: linear-gradient(135deg, #2A5F9E, #14365E); }   /* 主蓝深 */
.cover-bg-2 { background: linear-gradient(135deg, #5A8AC2, #1D4E89); }   /* 中蓝 */
.cover-bg-3 { background: linear-gradient(135deg, #5C5C58, #2C2C28); }   /* 深灰 */
.cover-bg-4 { background: linear-gradient(135deg, #8A8A82, #3A3A38); }   /* 中灰 */
.cover-bg-5 { background: linear-gradient(135deg, #1A1A1A, #14365E); }   /* 黑蓝 */

.works-footer {
  display: flex; justify-content: center;
  margin-top: 56px;
}
.view-all {
  font-family: var(--sans-cn); font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.25em;
  color: var(--ink);
  display: inline-flex; align-items: center; gap: 14px;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 8px;
  transition: gap .3s;
}
.view-all:hover { gap: 22px; }
.view-all .arrow-en {
  font-family: var(--sans-cn); font-size: 18px;
}

/* ════════════════════════════════════════════════════════════
   NUMBERS — credibility strip
   ════════════════════════════════════════════════════════════ */
.numbers {
  padding: clamp(60px, 8vw, 100px) 0;
  border-top: 1px solid var(--line);
}
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.num-item {
  padding: 16px 28px;
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 6px;
}
.num-item:last-child { border-right: none; }

.num-figure {
  font-family: var(--sans-cn);
  font-size: clamp(56px, 8vw, 104px);
  line-height: 1;
  color: var(--ink);
  font-weight: 200;
  letter-spacing: -0.04em;
  display: flex; align-items: baseline; gap: 4px;
}
.num-figure sup {
  font-family: var(--sans-cn); font-size: 0.22em; color: var(--ink-3);
  font-weight: 400;
  vertical-align: top;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-left: 2px;
}
.num-label-cn {
  font-family: var(--sans-cn); font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.18em;
  color: var(--ink-2);
  margin-top: 12px;
}
.num-label-en {
  font-family: var(--sans-cn); font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.06em;
}

@media (max-width: 800px) {
  .numbers-grid { grid-template-columns: repeat(2, 1fr); }
  .num-item:nth-child(2) { border-right: none; }
  .num-item:nth-child(1), .num-item:nth-child(2) { border-bottom: 1px solid var(--line); padding-bottom: 32px; }
  .num-item:nth-child(3), .num-item:nth-child(4) { padding-top: 32px; }
}

/* ════════════════════════════════════════════════════════════
   PROCESS
   ════════════════════════════════════════════════════════════ */
.process {
  padding: var(--section) 0;
  background: var(--paper-2);
  border-top: 1px solid var(--line);
}
.process-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(40px, 6vw, 100px);
  align-items: start;
}
.process-aside .eyebrow { display: block; margin-bottom: 4px; }
.process-aside h2 {
  font-family: var(--sans-cn); font-weight: 600;
  font-size: clamp(28px, 3.5vw, 44px);
  letter-spacing: 0.04em;
  line-height: 1.3;
  margin-top: 32px;
  margin-bottom: 24px;
}
.process-aside h2 em {
  font-family: var(--sans-cn); font-style: normal;
  color: var(--growth);
  font-weight: 400;
}
.process-aside-text {
  font-family: var(--sans-cn);
  font-size: 14px; color: var(--ink-2);
  line-height: 1.95;
  font-weight: 300;
}

.process-steps {
  border-top: 1px solid var(--line);
}
.process-step {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: background .3s;
}
.process-step:hover { background: var(--paper-2); padding-left: 12px; }

.step-num {
  display: flex; flex-direction: column; gap: 4px;
}
.step-num-fig {
  font-family: var(--sans-cn);
  font-size: 46px;
  line-height: 1;
  color: var(--ink);
  font-weight: 200;
  letter-spacing: -0.04em;
}
.step-num-lbl {
  font-family: var(--sans-cn); font-size: 11px;
  color: var(--ink-4);
  letter-spacing: 0.18em;
}
.step-body {
  display: flex; flex-direction: column; gap: 10px;
}
.step-title {
  font-family: var(--sans-cn); font-weight: 600;
  font-size: 22px; letter-spacing: 0.08em;
}
.step-title-en {
  font-family: var(--sans-cn); font-size: 14px; color: var(--ink-3);
  letter-spacing: 0.04em;
}
.step-desc {
  font-family: var(--sans-cn);
  font-size: 14px; color: var(--ink-2);
  line-height: 1.85; font-weight: 300;
  margin-top: 4px;
}
.step-tags {
  font-family: var(--sans-cn); font-size: 12px; color: var(--ink-4);
  letter-spacing: 0.04em;
  margin-top: 6px;
}

@media (max-width: 768px) {
  .process-grid { grid-template-columns: 1fr; }
  .process-step { grid-template-columns: 70px 1fr; gap: 18px; }
  .step-num-fig { font-size: 32px; }
}

/* ════════════════════════════════════════════════════════════
   CTA — final
   ════════════════════════════════════════════════════════════ */
.cta-final {
  padding: var(--section) 0;
  background: var(--paper-2);
  color: var(--ink);
  position: relative;
  overflow: hidden;
}
.cta-final::before {
  content:''; position: absolute; inset: 0;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
  opacity: 0.08; pointer-events: none;
}
.cta-final-inner { position: relative; z-index: 2; text-align: center; }

.cta-final .eyebrow {
  color: var(--blue); margin-bottom: 24px; display: inline-block;
}
.cta-final h2 {
  font-family: var(--sans-cn); font-weight: 700;
  font-size: clamp(40px, 6vw, 84px);
  line-height: 1.15;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin-bottom: 32px;
  max-width: 1000px; margin-left: auto; margin-right: auto;
}
.cta-final h2 em {
  font-family: var(--sans-cn); font-style: normal;
  font-weight: 400;
  color: var(--blue);
  font-size: 0.85em;
  display: inline-block;
}
.cta-final-sub {
  font-family: var(--sans-cn); font-size: clamp(16px, 2vw, 22px);
  color: var(--ink-3);
  letter-spacing: 0.06em;
  margin-bottom: 56px;
  max-width: 700px; margin-left: auto; margin-right: auto;
}

.cta-final-buttons {
  display: flex; gap: 18px; justify-content: center; flex-wrap: wrap;
}
.cta-btn-pri {
  background: var(--ink);
  color: var(--paper);
  padding: 22px 38px;
  font-family: var(--sans-cn); font-size: 14px; font-weight: 500;
  letter-spacing: 0.3em;
  display: inline-flex; align-items: center; gap: 16px;
  transition: all .35s;
}
.cta-btn-pri:hover {
  background: var(--blue);
  transform: translate(3px, -3px);
  box-shadow: -6px 6px 0 var(--ink);
}
.cta-btn-pri .arrow-en { font-family: var(--sans-cn); font-size: 22px; }

.cta-btn-sec {
  border: 1px solid var(--ink);
  color: var(--ink);
  padding: 22px 38px;
  font-family: var(--sans-cn); font-size: 14px; font-weight: 500;
  letter-spacing: 0.3em;
  display: inline-flex; align-items: center; gap: 16px;
  transition: all .35s;
}
.cta-btn-sec:hover { background: var(--ink); color: var(--paper); }

/* ════════════════════════════════════════════════════════════
   INSIGHTS — Field notes from the shelf
   ════════════════════════════════════════════════════════════ */
.insights {
  padding: var(--section) 0;
  border-top: 1px solid var(--line);
  color: var(--ink);
  position: relative;
}

.insights-head {
  margin-bottom: 80px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--ink);
}

.insights-head .eyebrow {
  display: block;
  margin-bottom: 4px;
}

.insights-title-cn {
  font-family: var(--sans-cn);
  font-weight: 700;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.2;
  letter-spacing: 0.04em;
  color: var(--ink);
  margin: 0 0 16px;
}

.insights-title-cn .ital {
  font-family: var(--sans-cn);
  font-style: normal;
  font-weight: 400;
  color: var(--ink-3);
  font-size: 0.55em;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  display: block;
  margin-top: 12px;
}

.insights-subtitle-cn {
  font-family: var(--sans-cn);
  font-weight: 400;
  font-size: clamp(16px, 1.8vw, 22px);
  color: var(--ink-2);
  letter-spacing: 0.12em;
  margin-bottom: 24px;
}

.insights-intro {
  font-family: var(--sans-cn);
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-3);
  max-width: 720px;
  margin: 0;
  font-weight: 300;
  border-left: 1px solid var(--line);
  padding-left: 24px;
}

/* —— 卡片网格 —— */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 80px;
}

.insight-card {
  border: 1px solid var(--line);
  padding: 32px;
  display: flex;
  flex-direction: column;
  transition: transform .4s, box-shadow .4s;
  cursor: pointer;
}
.insight-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(26,26,26,0.1);
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.card-tag {
  font-family: var(--sans-cn);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink);
}

.card-date {
  font-family: var(--sans-cn);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-3);
}

.card-title {
  font-family: var(--sans-cn);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.06em;
  color: var(--ink);
  margin: 0 0 16px;
  line-height: 1.4;
}

.card-excerpt {
  font-family: var(--sans-cn);
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink-2);
  margin: 0 0 auto 0;
  font-weight: 300;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--sans-cn);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--ink-3);
  margin-top: 20px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line-2);
  transition: color .3s, border-color .3s, gap .3s;
}
.insight-card:hover .card-link {
  color: var(--ink);
  border-color: var(--ink);
  gap: 20px;
}

.card-link .arrow-en {
  font-family: var(--sans-cn);
  font-size: 18px;
}

/* —— 底部按钮 —— */
.insights-footer {
  display: flex;
  justify-content: center;
}

.insights-view-all {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--sans-cn);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.25em;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 8px;
  transition: gap .3s;
}
.insights-view-all:hover {
  gap: 22px;
}

.insights-view-all .arrow-en {
  font-family: var(--sans-cn);
  font-size: 18px;
}

/* —— 响应式 —— */
@media (max-width: 900px) {
  .insights-head { margin-bottom: 64px; }
  .insights-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 64px;
  }
  .insight-card { padding: 24px; }
}

@media (max-width: 600px) {
  .insights-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 48px;
  }
  .insight-card { padding: 20px; }
  .insights-view-all { font-size: 12px; }
}

/* ════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════ */
.footer {
  background: var(--blue-6);
  color: var(--paper);
  padding: 80px 0 32px;
  position: relative;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}
.footer-brand-cn {
  font-family: var(--sans-cn); font-weight: 700;
  font-size: 28px; letter-spacing: 0.18em;
  margin-bottom: 6px;
  color: var(--paper);
  text-decoration: none;
  display: block;
  cursor: pointer;
}
.footer-brand-en {
  font-family: var(--sans-cn);
  font-size: 16px; letter-spacing: 0.32em;
  color: var(--ink-5); margin-bottom: 24px;
}
.footer-tagline {
  font-family: var(--sans-cn); font-size: 16px; color: rgba(255,255,255,0.5);
  letter-spacing: 0.04em; line-height: 1.7;
  max-width: 360px;
}

.footer-col h4 {
  font-family: var(--sans-cn); font-size: 13px;
  color: var(--bloom-2);
  letter-spacing: 0.18em;
  margin-bottom: 20px;
  font-weight: 400;
}
.footer-col ul { list-style: none; }
.footer-col ul li {
  margin-bottom: 6px;
  font-family: var(--sans-cn); font-size: 13px;
  color: rgba(255,255,255,0.65);
  font-weight: 300;
  letter-spacing: 0.04em;
}
.footer-col a { transition: color .25s; }
.footer-col a:hover { color: var(--paper); }
.footer-col .em { color: var(--paper); font-weight: 400; }

.footer-qrcode {
  display: flex;
  gap: 20px;
  margin-top: 16px;
}
.footer-qrcode .qrcode-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.footer-qrcode .qrcode-item img {
  border-radius: 4px;
  background: #fff;
  padding: 4px;
}
.footer-qrcode .qrcode-item span {
  font-family: var(--sans-cn);
  font-size: 11px;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.04em;
}

.footer-bot {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
  font-family: var(--sans-cn); font-size: 12px; color: rgba(255,255,255,0.4);
  letter-spacing: 0.06em;
}

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 500px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ════════════════════════════════════════════════════════════
   ANIMATIONS — entrance reveals
   ════════════════════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 1s ease, transform 1s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .8s ease, transform .8s ease;
}
.reveal-stagger.in > * { opacity: 1; transform: translateY(0); }
.reveal-stagger.in > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger.in > *:nth-child(2) { transition-delay: .1s; }
.reveal-stagger.in > *:nth-child(3) { transition-delay: .2s; }
.reveal-stagger.in > *:nth-child(4) { transition-delay: .3s; }
.reveal-stagger.in > *:nth-child(5) { transition-delay: .4s; }
.reveal-stagger.in > *:nth-child(6) { transition-delay: .5s; }