/* ============================================
   无矩网络 WUJU — 官网样式
   深色科技感 / 极简 / 克制
   ============================================ */

:root {
  --bg:        #06070A;
  --bg-2:      #0A0C11;
  --surface:   #0E1116;
  --surface-2: #13171E;
  --line:      rgba(255, 255, 255, 0.075);
  --line-2:    rgba(255, 255, 255, 0.14);
  --text:      #EDEFF3;
  --muted:     #8B93A5;
  --muted-2:   #5E6675;
  --lime:      #CCF755;
  --lime-soft: rgba(204, 247, 85, 0.12);

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
               "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
               "Source Han Sans SC", sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "JetBrains Mono", Consolas,
               "Liberation Mono", monospace;

  --wrap: 1240px;
  --pad: 40px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.nav-open { overflow: hidden; }

img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, dl, dd { margin: 0; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

::selection { background: var(--lime); color: #06070A; }

/* ---------- 颗粒质感层 ---------- */
.grain {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* ---------- 通用容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ============================================
   NAV
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 900;
  transition: background 0.45s var(--ease), backdrop-filter 0.45s, border-color 0.45s;
  border-bottom: 1px solid transparent;
}

.nav.is-stuck {
  background: rgba(6, 7, 10, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--line);
}

.nav-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
  height: 76px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 30px;
  height: 30px;
  color: var(--text);
  transition: transform 0.6s var(--ease), color 0.3s;
}

.brand-mark .mark-accent { color: var(--lime); }

.brand:hover .brand-mark { transform: rotate(90deg); }

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text b {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.brand-text i {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 9.5px;
  letter-spacing: 0.28em;
  color: var(--muted-2);
  margin-top: 3px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  margin-left: auto;
}

.nav-links a {
  position: relative;
  font-size: 13.5px;
  color: var(--muted);
  letter-spacing: 0.06em;
  transition: color 0.3s;
  padding: 6px 0;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--lime);
  transition: width 0.4s var(--ease);
}

.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.lang-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  border: 1px solid var(--line-2);
  border-radius: 999px;
  padding: 7px 13px;
  transition: color 0.3s, border-color 0.3s, background 0.3s;
}

.lang-btn:hover {
  color: var(--lime);
  border-color: rgba(204, 247, 85, 0.5);
  background: var(--lime-soft);
}

.burger {
  display: none;
  width: 40px;
  height: 40px;
  position: relative;
}

.burger span {
  position: absolute;
  left: 9px;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.4s var(--ease), opacity 0.3s;
}

.burger span:first-child { top: 16px; }
.burger span:last-child  { top: 23px; }

.burger.is-active span:first-child { transform: translateY(3.5px) rotate(45deg); }
.burger.is-active span:last-child  { transform: translateY(-3.5px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 50px;
  padding: 0 26px;
  border-radius: 999px;
  background: var(--lime);
  color: #07080B;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.03em;
  white-space: nowrap;
  transition: transform 0.35s var(--ease), box-shadow 0.35s, background 0.35s;
  box-shadow: 0 0 0 0 rgba(204, 247, 85, 0);
}

.btn svg {
  width: 16px;
  height: 16px;
  transition: transform 0.35s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 34px -12px rgba(204, 247, 85, 0.55);
}

.btn:hover svg { transform: translateX(4px); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line-2);
  box-shadow: none;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.045);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: none;
}

.btn-sm {
  height: 40px;
  padding: 0 20px;
  font-size: 13px;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 140px 0 100px;
  overflow: hidden;
  isolation: isolate;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.85;
  mask-image: linear-gradient(to bottom, #000 0%, #000 52%, transparent 94%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 52%, transparent 94%);
}

.hero-glow {
  position: absolute;
  z-index: 0;
  width: 1100px;
  height: 1100px;
  left: 50%;
  top: 40%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle,
    rgba(204, 247, 85, 0.10) 0%,
    rgba(120, 180, 255, 0.045) 32%,
    transparent 62%);
  filter: blur(30px);
  pointer-events: none;
  animation: breathe 9s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { opacity: 0.75; transform: translate(-50%, -50%) scale(1); }
  50%      { opacity: 1;    transform: translate(-50%, -50%) scale(1.08); }
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.032) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.032) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 45%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 45%, #000 20%, transparent 78%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 11px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 34px;
}

.hero-meta .dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 12px 2px rgba(204, 247, 85, 0.65);
  animation: pulse 2.6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.35; transform: scale(0.8); }
}

.hero-title {
  display: flex;
  align-items: baseline;
  font-size: clamp(5.4rem, 17vw, 13.5rem);
  font-weight: 800;
  line-height: 0.86;
  letter-spacing: 0.02em;
  margin: 0 0 6px -0.04em;
}

.hero-title .t-solid { color: var(--text); }

.hero-title .t-accent {
  color: var(--lime);
  margin-left: 0.08em;
  text-shadow: 0 0 90px rgba(204, 247, 85, 0.28);
}

html[lang="en"] .hero-title {
  font-size: clamp(3.6rem, 12vw, 9.5rem);
  letter-spacing: 0.01em;
}

html[lang="en"] .hero-title .t-accent {
  margin-left: 0.03em;
}

.hero-en {
  font-family: var(--font-mono);
  font-size: clamp(0.72rem, 1.5vw, 0.95rem);
  letter-spacing: 0.55em;
  color: var(--lime);
  margin: 20px 0 0 0.35em;
  text-transform: uppercase;
}

html[lang="en"] .hero-en {
  font-size: clamp(0.66rem, 1.15vw, 0.8rem);
  letter-spacing: 0.3em;
  margin-left: 0.15em;
}

.hero-desc {
  max-width: 31em;
  margin-top: 40px;
  font-size: clamp(0.95rem, 1.35vw, 1.06rem);
  line-height: 1.95;
  color: var(--muted);
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 42px;
}

.hero-foot {
  position: absolute;
  bottom: 34px;
  left: 0;
  right: 0;
  z-index: 2;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--muted-2);
  text-transform: uppercase;
}

.scroll-hint {
  display: flex;
  align-items: center;
  gap: 12px;
}

.scroll-hint i {
  position: relative;
  display: block;
  width: 1px;
  height: 34px;
  background: linear-gradient(to bottom, var(--lime), transparent);
  overflow: hidden;
}

.scroll-hint i::after {
  content: "";
  position: absolute;
  top: -100%;
  left: 0;
  width: 1px;
  height: 100%;
  background: var(--lime);
  animation: scrollLine 2.2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%   { top: -100%; }
  60%  { top: 100%; }
  100% { top: 100%; }
}

/* ============================================
   SECTION 通用
   ============================================ */
.section {
  position: relative;
  padding: 130px 0;
  border-top: 1px solid var(--line);
}

.section-alt { background: var(--bg-2); }

.sec-head {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-bottom: 56px;
}

.sec-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--lime);
  padding: 5px 10px;
  border: 1px solid rgba(204, 247, 85, 0.28);
  border-radius: 3px;
  flex-shrink: 0;
}

.sec-head h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.sec-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--line-2), transparent);
}

.sec-lead {
  max-width: 32em;
  font-size: clamp(1.05rem, 1.7vw, 1.28rem);
  line-height: 1.85;
  color: var(--muted);
  margin-bottom: 60px;
  margin-top: -22px;
}

/* ============================================
   ABOUT
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
  gap: 90px;
  align-items: start;
}

.lead {
  font-size: clamp(1.25rem, 2.3vw, 1.72rem);
  font-weight: 600;
  line-height: 1.72;
  letter-spacing: 0.01em;
  color: var(--text);
  text-wrap: pretty;
}

.body-text {
  margin-top: 30px;
  max-width: 40em;
  color: var(--muted);
  line-height: 1.95;
  font-size: 15px;
  text-wrap: pretty;
}

.stats {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.stats li {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "no   num"
    "no   cap";
  align-items: baseline;
  column-gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.4s;
}

.stats li:hover { border-bottom-color: rgba(204, 247, 85, 0.4); }

.stat-num {
  grid-area: no;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted-2);
  align-self: start;
  padding-top: 8px;
}

.stats b {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text);
}

.stats em {
  grid-area: cap;
  font-style: normal;
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ============================================
   PRODUCTS — 主推产品
   ============================================ */
.fp {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 60px;
  align-items: center;
  padding: 56px 56px 56px 58px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 22px;
  background: linear-gradient(155deg, #12141C 0%, #0B0D12 62%);
  overflow: hidden;
}

.fp::before {
  content: "";
  position: absolute;
  right: -12%;
  top: -38%;
  width: 680px;
  height: 680px;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.17), transparent 62%);
  pointer-events: none;
}

.fp-body {
  position: relative;
  z-index: 2;
}

.fp-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.fp-type {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.fp-name {
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.15;
}

.fp-en {
  margin-top: 10px;
  font-size: 12.5px;
  letter-spacing: 0.18em;
  color: var(--muted-2);
}

.fp-desc {
  margin-top: 22px;
  max-width: 30em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
  text-wrap: pretty;
}

.fp-points {
  margin-top: 26px;
  display: grid;
  gap: 11px;
}

.fp-points li {
  position: relative;
  padding-left: 18px;
  font-size: 13.6px;
  line-height: 1.7;
  color: var(--text);
  opacity: 0.86;
}

.fp-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--lime);
  opacity: 0.8;
}

.fp-platforms {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.fp-platforms span {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding: 5px 11px;
  border: 1px solid var(--line-2);
  border-radius: 5px;
  transition: color 0.3s, border-color 0.3s;
}

.fp:hover .fp-platforms span { border-color: rgba(255, 255, 255, 0.24); }

.fp-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.fp-note {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--muted-2);
}

.fp-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.fp-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.32), transparent 66%);
  filter: blur(26px);
  pointer-events: none;
}

.fp-phone {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 286px;
  border-radius: 30px;
  overflow: hidden;
  background: #0A0C11;
  box-shadow:
    0 0 0 7px #15171E,
    0 0 0 8px rgba(255, 255, 255, 0.09),
    0 40px 80px -30px rgba(0, 0, 0, 0.95);
  transition: transform 0.8s var(--ease);
}

.fp:hover .fp-phone { transform: translateY(-6px); }

.fp-phone img {
  width: 100%;
  height: auto;
  display: block;
}

/* 功能亮点 */
.fp-features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 22px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}

.fp-feat {
  background: #0D1017;
  padding: 28px 26px 32px;
  transition: background 0.5s var(--ease);
}

.fp-feat:hover { background: #11151F; }

.fp-feat-no {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted-2);
}

.fp-feat h4 {
  margin-top: 12px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.fp-feat p {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
  text-wrap: pretty;
}

.prod-note {
  margin-top: 34px;
  font-size: 13px;
  color: var(--muted-2);
  letter-spacing: 0.03em;
}

/* ============================================
   CAPABILITY
   ============================================ */
.cap-list { border-top: 1px solid var(--line); }

.cap-row {
  display: grid;
  grid-template-columns: 62px minmax(0, 1.05fr) minmax(0, 2fr);
  align-items: start;
  gap: 30px;
  padding: 32px 8px;
  border-bottom: 1px solid var(--line);
  transition: background 0.45s var(--ease), padding-left 0.45s var(--ease);
  position: relative;
}

.cap-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--lime);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.45s var(--ease);
}

.cap-row:hover {
  background: rgba(255, 255, 255, 0.022);
  padding-left: 22px;
}

.cap-row:hover::before { transform: scaleY(1); }

.cap-no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted-2);
  padding-top: 6px;
  transition: color 0.4s;
}

.cap-row:hover .cap-no { color: var(--lime); }

.cap-row h3 {
  font-size: clamp(1.02rem, 1.6vw, 1.22rem);
  font-weight: 700;
  letter-spacing: 0.03em;
  padding-top: 3px;
}

.cap-row p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted);
}

/* ============================================
   PHILOSOPHY
   ============================================ */
.phil-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}

.phil {
  background: #0F1219;
  padding: 46px 34px 50px;
  transition: background 0.5s var(--ease);
  position: relative;
}

.phil::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s var(--ease);
}

.phil:hover { background: #0D1016; }
.phil:hover::before { transform: scaleX(1); }

.phil-cn {
  display: block;
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.2;
}

.phil-en {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.32em;
  color: var(--lime);
  margin-top: 12px;
  text-transform: uppercase;
}

.phil p {
  margin-top: 24px;
  font-size: 13.8px;
  line-height: 1.9;
  color: var(--muted);
}

/* ============================================
   CAREERS
   ============================================ */
.careers-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 80px;
  align-items: start;
}

.careers-grid .btn { margin-top: 34px; }

.job-list { border-top: 1px solid var(--line); }

.job-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 6px;
  border-bottom: 1px solid var(--line);
  transition: padding-left 0.4s var(--ease), background 0.4s;
  cursor: default;
}

.job-list li:hover {
  padding-left: 16px;
  background: rgba(255, 255, 255, 0.022);
}

.job-list span {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.job-list em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--muted-2);
}

/* ============================================
   CONTACT
   ============================================ */
.contact { border-bottom: 1px solid var(--line); }

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 80px;
  align-items: start;
}

.contact-big {
  font-size: clamp(1.4rem, 2.8vw, 2.1rem);
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: 0.01em;
  text-wrap: pretty;
}

.mail-link {
  display: inline-block;
  margin-top: 36px;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.2vw, 1.5rem);
  letter-spacing: 0.02em;
  color: var(--lime);
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(204, 247, 85, 0.35);
  transition: border-color 0.4s, letter-spacing 0.5s var(--ease);
  word-break: break-all;
}

.mail-link:hover {
  border-bottom-color: var(--lime);
  letter-spacing: 0.06em;
}

.contact-info {
  display: grid;
  gap: 26px;
  border-left: 1px solid var(--line);
  padding-left: 34px;
}

.contact-info dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--muted-2);
  text-transform: uppercase;
  margin-bottom: 7px;
}

.contact-info dd {
  font-size: 14.5px;
  color: var(--text);
  letter-spacing: 0.03em;
  word-break: break-all;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  position: relative;
  padding: 62px 0 54px;
  overflow: hidden;
}

.footer-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}

.footer-brand b {
  display: block;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
}

.footer-brand span {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  color: var(--muted-2);
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--muted-2);
  letter-spacing: 0.03em;
}

.footer-meta a { transition: color 0.3s; }
.footer-meta a:hover { color: var(--lime); }
.footer-sep { opacity: 0.4; }

.footer-glow {
  position: absolute;
  bottom: -260px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 340px;
  background: radial-gradient(ellipse, rgba(204, 247, 85, 0.09), transparent 68%);
  filter: blur(40px);
  pointer-events: none;
}

/* ============================================
   REVEAL 动画
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  will-change: opacity, transform;
}

.reveal.in {
  opacity: 1;
  transform: none;
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1080px) {
  :root { --pad: 32px; }
  .about-grid { grid-template-columns: 1fr; gap: 56px; }
  .fp { grid-template-columns: 1fr; gap: 44px; padding: 42px 40px; }
  .fp-features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .careers-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .contact-info {
    border-left: 0;
    padding-left: 0;
    border-top: 1px solid var(--line);
    padding-top: 32px;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .cap-row { grid-template-columns: 48px minmax(0, 1fr); }
  .cap-row p { grid-column: 2; margin-top: 4px; }
  .nav-links { gap: 24px; }
}

@media (max-width: 860px) {
  :root { --pad: 22px; }

  .nav-inner { height: 66px; gap: 12px; }
  .nav-links {
    position: fixed;
    inset: 66px 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(8, 9, 13, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    padding: 8px 22px 24px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
  }
  .nav-links.is-open {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  .nav-links a {
    width: 100%;
    padding: 16px 0;
    font-size: 16px;
    border-bottom: 1px solid var(--line);
  }
  .nav-links a::after { display: none; }

  .burger { display: block; }
  .nav-cta { display: none; }

  .hero { padding: 120px 0 96px; min-height: 92svh; }
  .hero-title { font-size: clamp(4.2rem, 21vw, 7rem); }
  .hero-foot { position: static; margin-top: 54px; padding-top: 0; }
  .hero-foot-right { display: none; }

  .section { padding: 84px 0; }
  .sec-head { gap: 14px; margin-bottom: 40px; }
  .sec-head h2 { white-space: normal; }
  .sec-lead { margin-top: -14px; margin-bottom: 42px; }

  .fp { grid-template-columns: 1fr; gap: 38px; padding: 34px 26px 38px; border-radius: 18px; }
  .fp::before { right: -40%; top: -20%; }
  .fp-visual { order: 2; }
  .fp-phone { max-width: 224px; }
  .fp-features { grid-template-columns: 1fr; }
  .fp-actions { gap: 12px; }
  .fp-actions .btn { flex: 1 1 100%; justify-content: center; }
  .fp-note { width: 100%; text-align: center; }

  .phil-grid { grid-template-columns: 1fr; }
  .phil { padding: 34px 26px 38px; }

  .contact-info { grid-template-columns: 1fr 1fr; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 24px; }

  .stats b { font-size: 26px; }
  .cap-row { gap: 16px; padding: 26px 6px; }
  .cap-row h3 { font-size: 1rem; }
  .cap-row p { font-size: 13.2px; }
}

@media (max-width: 520px) {
  .hero-title { font-size: clamp(3.6rem, 23vw, 6rem); }
  .hero-actions { gap: 10px; }
  .btn { height: 46px; padding: 0 20px; font-size: 13px; }
  .hero-actions .btn { flex: 1 1 100%; justify-content: center; }
  .contact-info { grid-template-columns: 1fr; }
}

/* 尊重减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}