/* ========================================
   变姐 · 青岛商业空间装修官网
   Design System: 暖色暗调·商业空间感
======================================== */

:root {
  /* 色彩：暖色暗调 */
  --bg: #14110F;            /* 主背景 暖深棕黑 */
  --bg-2: #1C1814;          /* 卡片背景 */
  --bg-3: #25201A;          /* 高亮卡片 */
  --warm: #C8956D;          /* 主暖色 铜棕 */
  --warm-2: #D9A77F;        /* 浅铜 */
  --warm-soft: #B07B53;     /* 深铜 */
  --amber: #E8B47A;         /* 琥珀点缀 */
  --gold-glow: rgba(200, 149, 109, 0.45);
  --cream: #F4E7D3;        /* 米白 */
  --white: #F8F3EA;         /* 主文字色 */
  --white-60: rgba(248, 243, 234, 0.62);
  --white-30: rgba(248, 243, 234, 0.32);
  --white-12: rgba(248, 243, 234, 0.12);
  --white-06: rgba(248, 243, 234, 0.06);
  --border: rgba(248, 243, 234, 0.10);
  --border-strong: rgba(248, 243, 234, 0.20);

  /* 字体 */
  --font-serif: 'Playfair Display', 'Noto Serif SC', Georgia, serif;
  --font-sans: 'DM Sans', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;

  /* 间距 */
  --section-py: clamp(80px, 12vw, 140px);
  --container-w: 1240px;
  --gap: clamp(16px, 2vw, 24px);

  /* 动效 */
  --ease: cubic-bezier(.22, .61, .36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--white);
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ 导航 ============ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 72px;
  z-index: 100;
  background: rgba(20, 17, 15, 0.72);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: all 0.4s var(--ease);
}
.nav.scrolled {
  background: rgba(20, 17, 15, 0.95);
  border-bottom-color: var(--border);
}

.nav-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-logo {
  display: flex;
  flex-direction: column;
  gap: 0;
  flex-shrink: 0;
}
.logo-mark {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 22px;
  color: var(--cream);
  letter-spacing: 0.04em;
  text-shadow: 0 0 16px var(--gold-glow);
}
.logo-en {
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--warm);
  text-transform: uppercase;
  font-weight: 500;
  margin-top: -2px;
}

.nav-links {
  display: flex;
  gap: 36px;
  align-items: center;
}
.nav-links a {
  font-size: 14px;
  color: var(--white-60);
  letter-spacing: 0.04em;
  position: relative;
  transition: color 0.3s var(--ease);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--white);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -8px; left: 50%;
  width: 0;
  height: 1px;
  background: var(--warm);
  transition: all 0.3s var(--ease);
  transform: translateX(-50%);
}
.nav-links a:hover::after, .nav-links a.active::after {
  width: 20px;
}

.nav-cta {
  font-size: 14px;
  font-weight: 500;
  padding: 10px 22px;
  border: 1px solid var(--warm);
  border-radius: 100px;
  color: var(--cream);
  transition: all 0.3s var(--ease);
  letter-spacing: 0.02em;
}
.nav-cta:hover {
  background: var(--warm);
  color: var(--bg);
  box-shadow: 0 0 24px var(--gold-glow);
}

.nav-lang {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 30px;
  min-width: 32px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--white-60);
  transition: all 0.3s var(--ease);
}
.nav-lang:hover {
  border-color: var(--warm);
  color: var(--cream);
}
.nav-lang-xhs {
  background: rgba(255, 36, 66, 0.12);
  border-color: rgba(255, 36, 66, 0.3);
  color: #FF5777;
  font-size: 13px;
}
.nav-lang-xhs:hover {
  background: #FF2442;
  color: #fff;
  border-color: #FF2442;
}

.nav-menu { display: none; font-size: 24px; color: var(--cream); }

/* ============ Hero ============ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 720px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
}

.hero-bg { position: absolute; inset: 0; }
.hero-img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.06);
  transition: opacity 1.4s var(--ease), transform 8s linear;
}
.hero-img.active {
  opacity: 1;
  transform: scale(1.0);
  animation: heroZoom 8s linear forwards;
}
@keyframes heroZoom {
  from { transform: scale(1.06); }
  to { transform: scale(1.0); }
}

.hero-mask {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(20, 17, 15, 0.62) 0%, rgba(20, 17, 15, 0.20) 32%, rgba(20, 17, 15, 0.28) 58%, rgba(20, 17, 15, 0.92) 100%),
    radial-gradient(ellipse at center, transparent 30%, rgba(20, 17, 15, 0.55) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 920px;
  margin: 0 auto;
  padding: 0 24px 12vh;
  text-align: center;
}

.hero-eyebrow {
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.32em;
  color: var(--warm);
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 28px;
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(40px, 7vw, 84px);
  line-height: 1.04;
  color: var(--cream);
  margin-bottom: 28px;
  letter-spacing: -0.01em;
  text-shadow: 0 4px 32px rgba(0,0,0,0.45);
}
.hero-title span { display: block; }
.hero-title em {
  font-style: italic;
  font-weight: 500;
  color: var(--amber);
  text-shadow: 0 0 40px var(--gold-glow);
}

.hero-sub {
  font-size: clamp(15px, 1.4vw, 18px);
  color: var(--white-60);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.7;
}
.hero-sub em {
  font-style: normal;
  color: var(--cream);
  font-weight: 500;
}

.hero-cta {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 36px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  background: linear-gradient(135deg, var(--warm) 0%, var(--warm-soft) 100%);
  color: var(--bg);
  border-radius: 100px;
  transition: all 0.4s var(--ease);
  box-shadow: 0 8px 32px rgba(200, 149, 109, 0.32);
  position: relative;
  overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--amber) 0%, var(--warm) 100%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px var(--gold-glow); }
.btn-primary:hover::before { opacity: 1; }
.btn-primary > * { position: relative; z-index: 1; }
.btn-primary.btn-large { padding: 18px 44px; font-size: 16px; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  padding: 16px 32px;
  font-size: 15px;
  font-weight: 500;
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  color: var(--cream);
  transition: all 0.4s var(--ease);
  background: rgba(248, 243, 234, 0.04);
}
.btn-ghost:hover {
  background: rgba(248, 243, 234, 0.10);
  border-color: var(--warm);
  color: var(--white);
}
.btn-ghost.btn-small { padding: 10px 20px; font-size: 13px; }

.hero-dots {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 2;
}
.dot {
  width: 32px; height: 3px;
  background: var(--white-12);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.4s var(--ease);
}
.dot.active {
  background: var(--warm);
  width: 48px;
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  right: 40px;
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--white-30);
  text-transform: uppercase;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-scroll span { animation: bounce 2s infinite; }
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

/* ============ Section 通用 ============ */
.section {
  padding: var(--section-py) 0;
  position: relative;
}

.section-eyebrow {
  font-size: 12px;
  letter-spacing: 0.32em;
  color: var(--warm);
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 24px;
}

.section-title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(34px, 5vw, 60px);
  line-height: 1.12;
  color: var(--cream);
  letter-spacing: -0.01em;
  margin-bottom: 24px;
  max-width: 880px;
}
.section-title em {
  font-style: italic;
  font-weight: 500;
  color: var(--amber);
}

.section-sub {
  font-size: clamp(15px, 1.3vw, 17px);
  color: var(--white-60);
  max-width: 720px;
  line-height: 1.7;
  margin-bottom: 72px;
}

/* ============ About ============ */
.about {
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(40px, 6vw, 96px);
  align-items: start;
}

.about-portrait {
  position: sticky;
  top: 120px;
}
.about-portrait img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: 4px;
  filter: contrast(1.05) saturate(0.95);
  box-shadow: 0 24px 80px rgba(0,0,0,0.5);
}
.about-portrait-tag {
  margin-top: 20px;
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--warm);
  text-transform: uppercase;
}

.about-text {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px 32px;
}
.about-item {
  padding: 28px 0;
  border-top: 1px solid var(--border);
}
.about-num {
  font-family: var(--font-serif);
  font-size: clamp(48px, 6vw, 72px);
  font-weight: 600;
  color: var(--amber);
  line-height: 1;
  margin-bottom: 12px;
}
.about-num small {
  font-size: 0.45em;
  color: var(--white-60);
  font-weight: 400;
  margin-left: 4px;
  letter-spacing: 0.1em;
}
.about-label {
  font-size: 14px;
  color: var(--white-60);
  line-height: 1.6;
}

.about-bio {
  grid-column: 1 / -1;
  padding: 32px 0 0;
  border-top: 1px solid var(--border);
  font-size: 16px;
  color: var(--white-60);
}
.about-bio p { margin-bottom: 14px; }
.about-bio strong { color: var(--cream); font-weight: 500; }

/* ============ Philosophy ============ */
.philosophy {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  border-top: 1px solid var(--border);
}

.truths {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.truth-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 48px 40px;
  transition: all 0.5s var(--ease);
  position: relative;
  overflow: hidden;
}
.truth-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--warm), transparent);
  opacity: 0;
  transition: opacity 0.5s var(--ease);
}
.truth-card:hover {
  background: var(--bg-3);
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: 0 24px 60px rgba(0,0,0,0.4);
}
.truth-card:hover::before { opacity: 1; }

.truth-num {
  font-family: var(--font-serif);
  font-size: 64px;
  font-weight: 500;
  color: var(--warm);
  opacity: 0.4;
  line-height: 1;
  margin-bottom: 24px;
}

.truth-card h3 {
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 500;
  line-height: 1.3;
  color: var(--cream);
  margin-bottom: 18px;
}
.truth-card h3 em {
  font-style: italic;
  color: var(--amber);
  font-weight: 400;
}

.truth-card p {
  color: var(--white-60);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 28px;
}

.truth-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--warm);
  text-transform: uppercase;
  padding: 8px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 100px;
}

/* ============ Cases ============ */
.cases {
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.case-card {
  display: block;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.5s var(--ease);
}
.case-card:hover {
  transform: translateY(-6px);
  border-color: var(--warm);
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}

.case-img {
  width: 100%;
  aspect-ratio: 4/3;
  background-size: cover;
  background-position: center;
  transition: transform 0.8s var(--ease);
  background-color: var(--bg-3);
}
.case-card:hover .case-img { transform: scale(1.04); }

.case-info {
  padding: 24px 28px 28px;
}
.case-cat {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--warm);
  text-transform: uppercase;
  margin-bottom: 12px;
  padding: 4px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 100px;
}
.case-info h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 500;
  color: var(--cream);
  margin-bottom: 8px;
  line-height: 1.3;
}
.case-info p {
  font-size: 13px;
  color: var(--white-60);
  line-height: 1.6;
}

.cases-cta { text-align: center; }

/* ============ Process ============ */
.process {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  border-top: 1px solid var(--border);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.step {
  padding: 32px 24px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.4s var(--ease);
  position: relative;
}
.step:hover {
  background: var(--bg-3);
  border-color: var(--warm);
  transform: translateY(-4px);
}
.step-num {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 500;
  color: var(--warm);
  opacity: 0.5;
  line-height: 1;
  margin-bottom: 20px;
}
.step h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 500;
  color: var(--cream);
  margin-bottom: 12px;
}
.step p {
  font-size: 13px;
  color: var(--white-60);
  line-height: 1.7;
}

/* ============ Contact CTA ============ */
.contact-cta {
  background:
    radial-gradient(ellipse at center, rgba(200, 149, 109, 0.15) 0%, transparent 60%),
    var(--bg);
  border-top: 1px solid var(--border);
  text-align: center;
}
.contact-inner {
  text-align: center;
}
.contact-inner .section-title { margin-left: auto; margin-right: auto; }
.contact-inner .section-sub { margin-left: auto; margin-right: auto; }
.contact-inner .hero-cta { justify-content: center; }

/* ============ Footer ============ */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 80px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 2fr;
  gap: 64px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--border);
}

.footer-brand p {
  margin-top: 16px;
  color: var(--white-60);
  font-size: 14px;
  line-height: 1.7;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col h4 {
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--warm);
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 500;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--white-60);
  margin-bottom: 10px;
  transition: color 0.3s var(--ease);
  cursor: pointer;
}
.footer-col a:hover { color: var(--cream); }

.footer-bottom {
  padding: 32px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--white-30);
  letter-spacing: 0.04em;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom-left, .footer-bottom-right {
  display: flex;
  align-items: center;
  gap: 10px;
}
.dot-sep {
  color: var(--white-12);
}
.icp-link, .xhs-link, .lang-switch {
  color: var(--white-30);
  transition: color 0.3s var(--ease);
  cursor: pointer;
}
.icp-link:hover, .xhs-link:hover { color: var(--warm); }
.lang-switch {
  padding: 2px 10px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 11px;
  letter-spacing: 0.18em;
}
.lang-switch:hover {
  border-color: var(--warm);
  color: var(--cream);
}
.footer-tagline {
  width: 100%;
  text-align: center;
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--white-12);
}
.xhs-link {
  color: #FF2442;
  font-weight: 500;
}
.xhs-link:hover { color: #FF5777; }

/* 奥邦入口：刻意低调，不抢戏 */
.aobang-link {
  color: rgba(248, 243, 234, 0.28);
  font-weight: 400;
  font-size: 11px;
  text-decoration: none;
  border-bottom: 1px dotted rgba(248, 243, 234, 0.18);
  padding-bottom: 1px;
  transition: color 0.2s;
}
.aobang-link:hover {
  color: rgba(248, 243, 234, 0.65);
  border-bottom-color: rgba(248, 243, 234, 0.4);
}

/* ============ 微信二维码弹层 ============ */
.footer-wechat {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.wx-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  background: #07C160;
  color: #fff;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.wx-popover {
  position: fixed;
  z-index: 200;
  pointer-events: none;
  opacity: 0;
  transform: translateY(8px) scale(0.96);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
}
.wx-popover.show {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.wx-popover-inner {
  background: #FFFFFF;
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
  width: 200px;
}
.wx-popover-inner img {
  width: 168px; height: 168px;
  border-radius: 6px;
  display: block;
  margin: 0 auto 8px;
}
.wx-popover-inner p {
  color: #14110F;
  font-size: 14px;
  font-weight: 500;
  margin: 0;
}
.wx-popover-inner small {
  display: block;
  color: #888;
  font-size: 11px;
  margin-top: 4px;
  letter-spacing: 0.04em;
}
.wx-popover-inner small em {
  font-style: normal;
  color: #07C160;
  font-weight: 500;
}
.wx-popover::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 12px; height: 12px;
  background: #FFFFFF;
  box-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-portrait { position: static; max-width: 480px; }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 720px) {
  .nav-links, .nav-cta { display: none; }
  .nav-menu { display: block; }
  .nav-lang-xhs { display: none; }   /* 移动端隐藏 xhs 图标，给汉堡让位 */
  .nav-lang { display: none; }       /* 移动端 EN 也进抽屉 */

  /* 头部：完全不透明背景，固定在顶部 */
  .nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 999;
    background: rgba(20,17,15,.98) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(212,175,109,.12);
  }

  /* 头部布局 */
  .nav-inner { padding: 0 12px !important; gap: 8px !important; height: 56px !important; }
  .nav-logo {
    min-width: 0;
    flex: 1;
    flex-direction: row;
    align-items: center;
    gap: 8px;
  }
  .logo-mark { font-size: 17px !important; color: #F8F3EA !important; }
  .logo-en { display: none !important; }

  /* 汉堡按钮：金色边框，清晰可辨 */
  .nav-menu {
    width: 38px;
    height: 38px;
    flex-shrink: 0;
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(212,175,109,.4);
    border-radius: 8px;
    color: #D4AF6D;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    align-items: center;
    justify-content: center;
  }

  /* hero 内容往下挪，不被固定 nav 挡住 */
  .hero { padding-top: 56px; }

  .truths { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; }
  .hero-content { padding: 0 24px 14vh; }
  .hero-scroll { display: none; }
  .about-text { grid-template-columns: 1fr; }
  .section-sub { margin-bottom: 48px; }
}

/* ============ 移动端导航抽屉 ============ */
.nav-drawer {
  position: fixed;
  top: 0; right: 0;
  width: 78vw;
  max-width: 360px;
  height: 100vh;
  background: linear-gradient(180deg, #14110F 0%, #1A1612 100%);
  border-left: 1px solid rgba(212,175,109,.18);
  box-shadow: -20px 0 60px rgba(0,0,0,.6);
  transform: translateX(100%);
  transition: transform .35s var(--ease);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  padding: 88px 32px 32px;
  overflow-y: auto;
}
.nav-drawer.open { transform: translateX(0); }

.nav-drawer a {
  display: block;
  padding: 18px 0;
  font-size: 18px;
  color: var(--white-60);
  letter-spacing: .04em;
  border-bottom: 1px solid rgba(255,255,255,.05);
  transition: color .2s var(--ease), padding .2s var(--ease);
}
.nav-drawer a:hover, .nav-drawer a.active {
  color: var(--gold);
  padding-left: 8px;
}
.nav-drawer a.nav-cta-drawer {
  margin-top: 24px;
  padding: 16px 20px;
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-2) 100%);
  color: #14110F !important;
  text-align: center;
  border-radius: 8px;
  font-weight: 600;
  border: none;
}
.nav-drawer a.nav-cta-drawer:hover { padding-left: 20px; }
.nav-drawer a.nav-lang-drawer {
  display: inline-block;
  width: auto;
  margin-right: 12px;
  margin-top: 16px;
  padding: 8px 16px;
  border: 1px solid rgba(212,175,109,.3);
  border-radius: 20px;
  font-size: 13px;
  color: var(--gold) !important;
  border-bottom: 1px solid rgba(212,175,109,.3) !important;
}
.nav-drawer .drawer-bottom {
  margin-top: auto;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,.05);
  font-size: 12px;
  color: rgba(255,255,255,.35);
  letter-spacing: .08em;
  line-height: 1.8;
}
.nav-drawer .drawer-bottom strong {
  display: block;
  color: var(--gold);
  font-size: 16px;
  letter-spacing: .04em;
  margin-bottom: 4px;
}

.nav-drawer-close {
  position: absolute;
  top: 24px; right: 24px;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 50%;
  color: var(--cream);
  font-size: 22px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}
.nav-drawer-close:hover { border-color: var(--gold); transform: rotate(90deg); }

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s var(--ease);
  z-index: 999;
}
.nav-overlay.open { opacity: 1; pointer-events: auto; }

/* body 锁滚动 */
body.nav-locked { overflow: hidden; }

@media (min-width: 721px) {
  .nav-drawer, .nav-overlay { display: none; }
}

/* ============ 动画入场 ============ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}