/* ============================================================
   Design System —— 极简黑白灰
   改主题色：搜索 --accent 全局替换即可
   ============================================================ */
:root {
  --accent: #0f0f0f;
  --accent-soft: rgba(15, 15, 15, 0.05);
  --ink: #111111;
  --paper: #f8f8f8;
  --white: #ffffff;
  --dark: #111111;
  --muted: rgba(17, 17, 17, 0.32);
  --muted-2: #5f5f5f;
  --line: rgba(17, 17, 17, 0.1);
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --font-en: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-cn: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  font-size: 14px;
  background: #ffffff;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  width: 100%;
  overflow-x: hidden;
  line-height: 1.6;
  font-family: var(--font-en), var(--font-cn);
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0.01em;
}

body.menu-open,
body.page-transitioning { overflow: hidden; }

ul, ol { list-style: none; }
a { text-decoration: none; color: inherit; cursor: pointer; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button { font-family: inherit; font-size: inherit; border: none; background: none; cursor: pointer; color: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; outline: none; border: none; background: transparent; }

::selection { background: var(--accent); color: #fff; }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(17, 17, 17, 0.25); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(17, 17, 17, 0.45); }

/* ---------- 通用排版 ---------- */
.wrap { max-width: 1600px; margin: 0 auto; }

.section { padding: clamp(80px, 10vw, 160px) clamp(16px, 4vw, 40px); position: relative; }
.section-dark { background: var(--dark); color: #eee; }
.section-light { background: var(--white); }
.section-gray { background: var(--paper); }

.sec-label {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  font-weight: 400;
  color: var(--muted-2);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}
.sec-label::before { content: "/"; color: var(--accent); }
.section-dark .sec-label { color: #eee; }

.sec-title {
  margin-top: 16px;
  font-size: clamp(64px, 10vw, 160px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  text-transform: capitalize;
  color: var(--ink);
}
.section-dark .sec-title { color: #f2f2f2; }

.sec-head {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 16px;
  line-height: 16px;
  text-transform: uppercase;
  color: var(--ink);
  transition: color 0.3s var(--ease);
}
.link-arrow svg { transition: transform 0.3s var(--ease); }
.link-arrow:hover { color: var(--accent); }
.link-arrow:hover svg { transform: translateX(8px); }

.link-arrow::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.35s var(--ease);
}
.link-arrow { position: relative; }
.link-arrow:hover::after { width: 100%; }

/* 数字角标 */
.count-badge {
  font-size: clamp(48px, 8vw, 120px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--accent);
  text-transform: capitalize;
  white-space: nowrap;
}

.flex-col { display: flex; flex-direction: column; gap: 8px; }
.logo-link { display: inline-flex; align-items: center; height: 100px; }
.brand-text { display: none; }

/* ---------- 头部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px clamp(16px, 4vw, 40px);
  color: #fff;
  background: transparent;
  transition: color 0.4s var(--ease), background 0.4s var(--ease), padding 0.4s var(--ease);
}
.site-header .logo { height: 100px; width: auto; cursor: pointer; }

.site-header .nav {
  display: flex;
  align-items: center;
  gap: clamp(24px, 4vw, 64px);
}

.site-header .nav-item {
  position: relative;
  font-size: 16px;
  line-height: 16px;
  cursor: pointer;
}
.site-header .nav-item .txt { display: inline-block; }
.site-header .nav-item::after {
  content: "";
  position: absolute;
  left: 0; bottom: -8px;
  width: 0; height: 2px;
  background: currentColor;
  transition: width 0.35s var(--ease);
}
.site-header .nav-item:hover::after,
.site-header .nav-item.active::after { width: 100%; }

.site-header .nav-item.active { opacity: 0.55; }

.header-btn {
  font-size: 16px;
  line-height: 16px;
  position: relative;
  cursor: pointer;
}
.header-btn { display: inline-flex; align-items: center; gap: 10px; background: none; border: 0; padding: 0; color: inherit; }
.burger { display: none; }
.header-btn::after {
  content: "";
  position: absolute;
  left: 0; bottom: -8px;
  width: 0; height: 2px;
  background: currentColor;
  transition: width 0.35s var(--ease);
}
.header-btn:hover::after { width: 100%; }

/* 滚动后 / 浅色主题 */
.site-header.is-scrolled,
.site-header.theme-light {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line);
}

/* ---------- 全屏菜单 ---------- */
.menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 1001;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.45s var(--ease), visibility 0.45s;
}
.menu-overlay.open { visibility: visible; opacity: 1; }

.menu-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
}
.menu-panel {
  position: relative;
  height: 100%;
  background: var(--accent);
  color: #eee;
  padding: 25px clamp(16px, 4vw, 40px) 0;
  overflow: hidden;
}

.menu-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 16px;
  color: #eee;
}
.menu-top .close { cursor: pointer; position: relative; }
.menu-top .close::after {
  content: "";
  position: absolute;
  left: 0; bottom: -8px;
  width: 0; height: 2px;
  background: #eee;
  transition: width 0.35s var(--ease);
}
.menu-top .close:hover::after { width: 100%; }

.menu-body {
  position: absolute;
  left: clamp(16px, 4vw, 40px);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2.4vw, 40px);
  z-index: 2;
}

.menu-item {
  display: flex;
  align-items: baseline;
  gap: 16px;
  color: #eee;
  opacity: 0.72;
  transform: translateY(24px);
  transition: opacity 0.35s var(--ease), transform 0.45s var(--ease);
}
.menu-overlay.open .menu-item { opacity: 1; transform: translateY(0); }
.menu-overlay.open .menu-item:nth-child(2) { transition-delay: 0.06s; }
.menu-overlay.open .menu-item:nth-child(3) { transition-delay: 0.12s; }
.menu-overlay.open .menu-item:nth-child(4) { transition-delay: 0.18s; }
.menu-overlay.open .menu-item:nth-child(5) { transition-delay: 0.24s; }

.menu-item:hover { opacity: 1; }
.menu-item .en { font-size: clamp(40px, 4.5vw, 64px); line-height: 1; font-weight: 500; }
.menu-item .cn { font-size: clamp(20px, 2.2vw, 32px); font-weight: 300; }
.menu-item .arrow { opacity: 0; transform: translateX(-14px); transition: all 0.35s var(--ease); align-self: center; }
.menu-item:hover .arrow { opacity: 1; transform: translateX(6px); }

.menu-side {
  position: absolute;
  right: clamp(24px, 4vw, 40px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
}
.menu-quote {
  font-size: clamp(14px, 1.4vw, 20px);
  color: #eee;
  margin-bottom: clamp(24px, 4vw, 48px);
}
.menu-company { font-size: 14px; line-height: 2; color: #eee; opacity: 0.9; }

.menu-bottom {
  position: absolute;
  left: clamp(16px, 4vw, 40px);
  right: clamp(16px, 4vw, 40px);
  bottom: clamp(20px, 3vw, 40px);
  z-index: 2;
}
.menu-contact {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 223px;
  padding: 0 20px;
  height: 48px;
  border-left: 2px solid #fff;
  color: #fff;
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
}
.menu-contact:hover { background: #dce4ef; color: #000; }
.menu-contact:hover svg path { stroke: #000; }
.menu-contact span { font-size: 16px; white-space: nowrap; }
.menu-contact svg path { stroke: #fff; transition: stroke 0.3s var(--ease); }

.menu-socials {
  display: flex;
  justify-content: flex-end;
  gap: clamp(32px, 4vw, 60px);
  margin-top: 24px;
  font-size: clamp(14px, 1.6vw, 24px);
  color: #eee;
}
.menu-socials a { position: relative; }
.menu-socials a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 2px;
  background: #eee;
  transition: width 0.3s var(--ease);
}
.menu-socials a:hover::after { width: 100%; }

/* ---------- 按钮 ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: clamp(3px, 0.3vw, 4px);
  padding: clamp(3px, 0.3vw, 4px) clamp(12px, 1vw, 16px);
  border-radius: 44.44px;
  background: rgba(17, 17, 17, 0.06);
  font-size: clamp(18px, 1.5vw, 24px);
  line-height: clamp(24px, 2vw, 32px);
  font-weight: 400;
  color: var(--ink);
  border: 1px solid transparent;
  transition: all 0.3s var(--ease);
}
.pill img, .pill svg { width: clamp(18px, 1.5vw, 24px); height: clamp(18px, 1.5vw, 24px); }
.pill.active { color: var(--ink); background: transparent; border-color: var(--ink); }
.pill:hover { opacity: 0.75; }

.contact-btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 223px;
  height: 48px;
  padding: 0 20px;
  border-left: 2px solid currentColor;
  color: var(--ink);
  background: transparent;
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
}
.contact-btn:hover { background: var(--ink); color: #fff; }
.contact-btn span { font-size: 16px; white-space: nowrap; }
.contact-btn svg { transition: transform 0.3s var(--ease); }
.contact-btn:hover svg { transform: translateX(6px); }

/* ---------- 案例详情页 ---------- */
.detail-hero {
  position: relative;
  height: 72vh;
  min-height: 520px;
  display: flex;
  align-items: flex-end;
  background: var(--dark);
  overflow: hidden;
  color: #fff;
}
.detail-hero-media { position: absolute; inset: 0; z-index: 0; }
.detail-hero-media img { width: 100%; height: 100%; object-fit: cover; }
.detail-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(17, 17, 17, 0.3), rgba(17, 17, 17, 0.05) 45%, rgba(17, 17, 17, 0.72));
}
.detail-hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 0 clamp(16px, 4vw, 40px) clamp(40px, 6vw, 80px);
}
.detail-hero-content .sec-title { margin-top: 12px; font-size: clamp(36px, 5vw, 88px); }
.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 2.4vw, 28px);
}
.detail-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: 44px;
  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.28);
  font-size: 14px;
  letter-spacing: 0.05em;
  color: #fff;
}
.detail-body { max-width: 1200px; }
.detail-info .lead { max-width: 820px; }
.detail-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(28px, 4vw, 64px);
  margin-top: clamp(40px, 5vw, 72px);
  padding: clamp(28px, 3.5vw, 48px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.detail-nav {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(40px, 5vw, 64px);
  background: var(--line);
  border: 1px solid var(--line);
}
@media (min-width: 900px) { .detail-nav { grid-template-columns: 1fr 1fr; } }
.detail-nav-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(22px, 2.6vw, 36px);
  background: var(--white);
  transition: background 0.3s var(--ease);
}
.detail-nav-item:hover { background: var(--paper); }
.detail-nav-item .tag {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted-2);
}
.detail-nav-item .name { font-size: clamp(18px, 1.8vw, 26px); font-weight: 400; color: var(--ink); }
.detail-nav-item:last-child { text-align: right; }

/* ---------- 案例详情 · 实景图集 ---------- */
.gallery-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  margin-top: clamp(72px, 9vw, 140px);
}
.gallery-head .count-badge { font-size: clamp(32px, 4vw, 64px); }
.gallery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 1.2vw, 20px);
  margin-top: clamp(28px, 3.2vw, 52px);
}
@media (min-width: 720px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .gallery-grid { grid-template-columns: repeat(3, 1fr); } }
.gallery-item {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--paper);
  border-radius: 0;
  cursor: zoom-in;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.gallery-item:hover img { transform: scale(1.04); }

/* ---------- 图片灯箱 ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(10, 10, 10, 0.94);
  display: flex;
  align-items: center;
  justify-content: center;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s var(--ease), visibility 0.3s;
}
.lightbox.open { visibility: visible; opacity: 1; }
.lb-img {
  max-width: min(92vw, 1400px);
  max-height: 84vh;
  object-fit: contain;
}
.lb-close {
  position: absolute;
  top: 28px;
  right: 32px;
  color: #fff;
  font-size: 15px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  z-index: 2;
}
.lb-close:hover { text-decoration: underline; }
.lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: #fff;
  font-size: 44px;
  line-height: 1;
  padding: 16px;
  opacity: 0.65;
  transition: opacity 0.3s;
  z-index: 2;
}
.lb-nav:hover { opacity: 1; }
.lb-prev { left: 16px; }
.lb-next { right: 16px; }
.lb-counter {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  letter-spacing: 0.12em;
}
@media (max-width: 768px) {
  .lb-close { top: 18px; right: 18px; font-size: 13px; }
  .lb-nav { font-size: 32px; }
  .lb-img { max-height: 78vh; }
}

/* ---------- 首页首屏 ---------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 620px;
  display: flex;
  align-items: flex-end;
  background: var(--dark);
  overflow: hidden;
  color: #fff;
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-media video, .hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(17, 17, 17, 0.35), rgba(17, 17, 17, 0.15) 55%, rgba(17, 17, 17, 0.72));
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 0 clamp(16px, 4vw, 40px) clamp(56px, 8vh, 110px);
  transform-origin: left bottom;
}
.hero-slogan {
  font-size: clamp(48px, 9vw, 140px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.0375em;
  text-transform: capitalize;
  color: #fff;
}
.hero-slogan-cn {
  font-size: clamp(24px, 4vw, 64px);
  font-weight: 400;
  line-height: 1;
  margin-top: clamp(16px, 2vw, 32px);
  color: #fff;
}
.hero-scroll {
  position: absolute;
  right: clamp(16px, 4vw, 40px);
  bottom: clamp(28px, 4vh, 56px);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
}
.hero-scroll .line {
  width: 1px;
  height: 64px;
  background: rgba(255, 255, 255, 0.4);
  position: relative;
  overflow: hidden;
}
.hero-scroll .line::after {
  content: "";
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: #fff;
  animation: scrollLine 2.2s var(--ease) infinite;
}
@keyframes scrollLine {
  0% { top: -100%; }
  60%, 100% { top: 100%; }
}

/* 首页大字入场 */
.split-line { display: block; overflow: hidden; }
.split-line > span {
  display: block;
  transform: translateY(110%);
  animation: riseIn 0.9s var(--ease) forwards;
}
.split-line:nth-child(2) > span { animation-delay: 0.12s; }
.split-line:nth-child(3) > span { animation-delay: 0.24s; }
@keyframes riseIn { to { transform: translateY(0); } }

/* ---------- 跑马灯 ---------- */
.marquee {
  background: var(--dark);
  color: #eee;
  overflow: hidden;
  padding: clamp(20px, 3vw, 40px) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 28s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  font-size: clamp(24px, 3.4vw, 48px);
  font-weight: 400;
  line-height: 1;
  white-space: nowrap;
  padding-right: 0.8em;
  color: #eee;
}
.marquee-track span::after {
  content: "/";
  margin-left: 0.8em;
  color: var(--accent);
}
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 首页 · 2026 案例轮播 ---------- */
.home-carousel {
  position: relative;
  height: clamp(440px, 64vh, 760px);
  overflow: hidden;
  background: var(--dark);
}
.carousel-label {
  position: absolute;
  top: clamp(88px, 12vh, 140px);
  left: clamp(16px, 4vw, 40px);
  z-index: 5;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(17, 17, 17, 0.35);
  padding: 8px 16px;
  border-radius: 44px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.carousel-slide {
  position: absolute;
  inset: 0;
  display: block;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.9s var(--ease), visibility 0.9s;
  cursor: pointer;
}
.carousel-slide.active { opacity: 1; visibility: visible; }
.carousel-slide img { width: 100%; height: 100%; object-fit: cover; }
.carousel-slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(17, 17, 17, 0.25), transparent 45%, rgba(17, 17, 17, 0.72));
}
.carousel-info {
  position: absolute;
  left: clamp(16px, 4vw, 40px);
  bottom: clamp(28px, 5vw, 64px);
  z-index: 3;
  color: #fff;
  max-width: 720px;
}
.carousel-remark {
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
}
.carousel-info h3 {
  margin-top: 12px;
  font-size: clamp(28px, 4.4vw, 64px);
  font-weight: 500;
  line-height: 1.2;
}
.carousel-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(255, 255, 255, 0.6);
  padding-bottom: 4px;
}
.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 6;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  font-size: 28px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s var(--ease);
}
.carousel-arrow:hover { background: rgba(255, 255, 255, 0.3); }
.carousel-arrow.prev { left: clamp(16px, 3vw, 40px); }
.carousel-arrow.next { right: clamp(16px, 3vw, 40px); }
.carousel-dots {
  position: absolute;
  bottom: clamp(24px, 4vw, 44px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 6;
  display: flex;
  gap: 10px;
}
.carousel-dot {
  width: 34px;
  height: 4px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.35);
  transition: background 0.3s var(--ease), width 0.3s var(--ease);
}
.carousel-dot.active { background: #fff; width: 48px; }

/* ---------- 通用内容块 ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr; gap: clamp(32px, 5vw, 80px); }
@media (min-width: 1024px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
}

.lead {
  font-size: clamp(20px, 2.2vw, 32px);
  font-weight: 400;
  line-height: 1.5;
  color: var(--ink);
}
.body-copy {
  font-size: clamp(14px, 1.4vw, 18px);
  line-height: 2;
  color: var(--muted-2);
  max-width: 620px;
}
.section-dark .body-copy { color: rgba(255, 255, 255, 0.72); }

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-top: clamp(40px, 6vw, 80px);
  border-top: 1px solid var(--line);
  padding-top: clamp(24px, 3vw, 40px);
}
.stat .num {
  font-size: clamp(40px, 6vw, 88px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--accent);
}
.stat .name { margin-top: 12px; font-size: 14px; color: var(--muted-2); text-transform: uppercase; letter-spacing: 0.08em; }

/* ---------- 案例卡片 ---------- */
.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 1.5vw, 24px);
  margin-top: clamp(40px, 6vw, 80px);
}
.home-works-grid { margin-top: clamp(24px, 3vw, 48px); }
@media (min-width: 720px) { .project-grid.cols-3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .project-grid.cols-3 { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .project-grid.cols-4 { grid-template-columns: repeat(4, 1fr); } }

.project-card {
  display: block;
  min-width: 0;
  transition: transform 0.3s var(--ease);
}
.project-card:hover { transform: scale(1.004); }
.project-card .cover {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--accent);
}
.project-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease), opacity 0.6s var(--ease);
}
.project-card:hover .cover img { transform: scale(1.04); }
.project-card .view-more {
  position: absolute;
  top: 0; left: 0;
  padding: 16px 20px;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0;
  transform: translateY(-6px);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  pointer-events: none;
}
.project-card:hover .view-more { opacity: 1; transform: translateY(0); }

.project-card .meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: clamp(14px, 1.6vw, 24px) 0 0;
}
.project-card .title {
  font-size: clamp(16px, 1.6vw, 24px);
  font-weight: 400;
  line-height: 1.2;
  color: var(--ink);
}
.project-card .remark {
  font-size: clamp(11px, 1.1vw, 16px);
  font-weight: 400;
  line-height: 1;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

/* ---------- 案例页 · 环形视图 ---------- */
.case-ring-page { height: 100vh; min-height: 640px; background: var(--paper); overflow: hidden; }

.ring-head {
  position: absolute;
  top: clamp(300px, 34vh, 340px);
  left: clamp(16px, 4vw, 40px);
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ring-head .sec-title {
  font-size: clamp(44px, 5.5vw, 88px);
  margin-top: 0;
}

.ring-stage {
  position: absolute;
  inset: 0;
  perspective: 1600px;
  overflow: hidden;
}
.ring {
  position: absolute;
  top: 58%;
  left: 50%;
  transform-style: preserve-3d;
  will-change: transform;
}
.ring-item {
  position: absolute;
  width: var(--ring-w, clamp(240px, 22vw, 380px));
  aspect-ratio: 16 / 10;
  left: calc(var(--ring-w, clamp(240px, 22vw, 380px)) / -2);
  top: calc(var(--ring-w, clamp(240px, 22vw, 380px)) * 5 / 16 / -2);
  cursor: grab;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  user-select: none;
  -webkit-user-select: none;
}
.ring-dense .ring-item { --ring-w: 190px; }
.ring-dense .ring-item .ring-label { display: none; }
.ring-dense .ring-item .frame { border-radius: 8px; }
.ring-item:active { cursor: grabbing; }
.ring-item .frame {
  width: 100%;
  height: 100%;
  border-radius: 12px;
  overflow: hidden;
  background: #ddd;
}
.ring-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}
.ring-item .ring-label {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 16px;
  font-size: 15px;
  color: var(--ink);
  white-space: nowrap;
}

.center-display {
  position: absolute;
  top: 58%;
  left: 50%;
  transform: translate(-50%, calc(-50% + 10px));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  z-index: 10;
  pointer-events: none;
}
.center-text {
  font-size: clamp(20px, 2.5vw, 40px);
  font-weight: 400;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: 20px;
  max-width: 22vw;
  min-width: 180px;
  text-shadow: 0 2px 10px rgba(255, 255, 255, 0.8);
  transition: opacity 0.25s var(--ease);
}
.center-text.is-fading { opacity: 0; }
.center-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: opacity 0.25s var(--ease);
}
.center-image.is-fading { opacity: 0; }
.center-image-wrap {
  position: relative;
  display: block;
  width: clamp(384px, 36vw, 672px);
  max-width: 672px;
  min-width: 360px;
  border-radius: 0;
  overflow: hidden;
  cursor: pointer;
  pointer-events: auto;
}
.center-image-hint {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 34px 16px 12px;
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.6));
  color: #fff;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: left;
  opacity: 0;
  transition: opacity 0.3s var(--ease);
  pointer-events: none;
}
.center-image-wrap:hover .center-image-hint { opacity: 1; }
.center-group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  margin-top: 18px;
}
.center-group .remark {
  font-size: clamp(20px, 2.5vw, 40px);
  line-height: 1.2;
  color: var(--ink);
}
.center-group .label {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.view-case-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  padding: 10px 20px;
  border-radius: 44px;
  border: 1px solid var(--ink);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
  pointer-events: auto;
}
.view-case-btn:hover { background: var(--ink); color: #fff; }
.view-case-btn svg path { stroke: currentColor; }

.case-toggles {
  position: fixed;
  right: clamp(20px, 3vw, 40px);
  bottom: clamp(24px, 4vh, 40px);
  z-index: 80;
  display: flex;
  gap: 8px;
}
.case-hint {
  position: fixed;
  left: clamp(16px, 3vw, 40px);
  bottom: clamp(24px, 4vh, 40px);
  z-index: 80;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}

/* ---------- 案例页 · 列表视图 ---------- */
.case-list-page {
  min-height: 100vh;
  background: var(--white);
  padding: clamp(300px, 36vh, 420px) clamp(16px, 4vw, 40px) clamp(64px, 8vw, 120px);
}
.case-list-page .sec-head { margin-top: 20px; }

/* ---------- 案例页 · 筛选索引（导航下方常驻） ---------- */
.case-filter-bar {
  position: fixed;
  top: 148px;
  left: 0;
  right: 0;
  z-index: 90;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  padding: 16px clamp(16px, 4vw, 40px);
}
.case-filters {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.filter-group {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
}
.filter-label {
  min-width: 56px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-2);
}
.filter-pill {
  font-size: 13px;
  line-height: 1;
  padding: 8px 16px;
  border-radius: 44px;
  border: 1px solid transparent;
  color: var(--muted-2);
  background: transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.filter-pill:hover { color: var(--ink); }
.filter-pill.active {
  color: var(--ink);
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}
.filter-count {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted-2);
  white-space: nowrap;
  margin-top: 4px;
}

/* 案例 slogan 区 */
.project-slogan {
  margin-top: clamp(40px, 6vw, 80px);
  border-top: 1px solid var(--line);
  padding-top: clamp(28px, 4vw, 56px);
}
.slogan-label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted-2);
}
.project-slogan .content {
  margin-top: clamp(20px, 2.6vw, 34px);
  font-size: clamp(28px, 3.6vw, 56px);
  line-height: 1.3;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
  max-width: 1100px;
}
.project-slogan .sub {
  margin-top: 16px;
  font-family: "Noto Serif SC", var(--font-cn);
  font-size: clamp(20px, 2.2vw, 30px);
  line-height: 1.6;
  color: var(--muted-2);
  max-width: 760px;
}
.project-slogan .sub::before {
  content: "—— ";
  color: var(--accent);
}
.project-slogan .bottom {
  margin-top: 20px;
  font-size: 14px;
  line-height: 2;
  color: var(--muted-2);
  max-width: 720px;
}

/* ---------- 关于页 ---------- */
.page-hero {
  min-height: 76vh;
  display: flex;
  align-items: flex-end;
  padding: clamp(110px, 16vh, 200px) clamp(16px, 4vw, 40px) clamp(48px, 6vw, 96px);
  background: var(--paper);
}
.page-hero .sec-title { max-width: 10em; }

.value-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-top: clamp(48px, 6vw, 88px);
}
@media (min-width: 1024px) { .value-grid { grid-template-columns: repeat(4, 1fr); } }
.value-cell {
  background: var(--white);
  padding: clamp(24px, 3vw, 44px);
}
.value-cell .idx { font-size: 14px; color: var(--accent); letter-spacing: 0.1em; }
.value-cell h3 { margin-top: 18px; font-size: clamp(20px, 2vw, 28px); font-weight: 500; }
.value-cell p { margin-top: 12px; font-size: 14px; line-height: 1.9; color: var(--muted-2); }

/* ---------- 关于页 · 设计理念深色卡片 ---------- */
.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2vw, 28px);
  margin-top: clamp(40px, 5vw, 72px);
}
@media (min-width: 720px) { .philosophy-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1080px) { .philosophy-grid { grid-template-columns: repeat(3, 1fr); } }
.philosophy-card {
  position: relative;
  background: var(--dark);
  color: #eee;
  border-radius: 0;
  padding: clamp(30px, 3.4vw, 52px);
  overflow: hidden;
}
.philosophy-card .no {
  display: inline-flex;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 22px;
  position: relative;
  z-index: 1;
}
.philosophy-card .lead {
  font-size: clamp(22px, 2.4vw, 34px);
  font-weight: 500;
  line-height: 1.6;
  color: #fff;
  position: relative;
  z-index: 1;
}
.philosophy-card .body {
  margin-top: 18px;
  font-size: 15px;
  line-height: 2;
  color: rgba(255, 255, 255, 0.72);
  position: relative;
  z-index: 1;
}

/* 流程 */
.process-list { margin-top: clamp(40px, 5vw, 72px); }
.process-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: clamp(20px, 2.6vw, 36px) 0;
  border-top: 1px solid var(--line);
  align-items: baseline;
}
@media (min-width: 1024px) { .process-row { grid-template-columns: 120px 1fr 2fr; } }
.process-row .no { font-size: 16px; color: var(--accent); }
.process-row h3 { font-size: clamp(22px, 2.6vw, 40px); font-weight: 500; letter-spacing: -0.01em; }
.process-row p { font-size: 14px; line-height: 1.9; color: var(--muted-2); }

/* ---------- 博客 ---------- */
.post-list { display: grid; grid-template-columns: 1fr; gap: clamp(32px, 4vw, 56px); margin-top: clamp(40px, 6vw, 80px); }
@media (min-width: 900px) { .post-list { grid-template-columns: repeat(3, 1fr); } }
.post-card { display: block; }
.post-card .cover { aspect-ratio: 16 / 10; overflow: hidden; background: var(--paper); }
.post-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.post-card:hover .cover img { transform: scale(1.04); }
.post-card .meta { margin-top: 20px; display: flex; gap: 16px; font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted-2); }
.post-card .meta .cat { color: var(--accent); }
.post-card h3 { margin-top: 12px; font-size: clamp(20px, 2vw, 28px); font-weight: 500; line-height: 1.35; }
.post-card p { margin-top: 12px; font-size: 14px; line-height: 1.9; color: var(--muted-2); }

/* ---------- 联系页 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(40px, 6vw, 96px);
  margin-top: clamp(48px, 6vw, 88px);
}
@media (min-width: 1024px) { .contact-grid { grid-template-columns: 1fr 1.2fr; } }

.contact-line {
  display: block;
  padding: clamp(18px, 2vw, 28px) 0;
  border-bottom: 1px solid var(--line);
}
.contact-line:first-of-type { border-top: 1px solid var(--line); }
.contact-line .k { font-size: 12px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--muted-2); }
.contact-line .v { margin-top: 8px; font-size: clamp(18px, 1.8vw, 26px); font-weight: 400; color: var(--ink); }
.contact-line a:hover .v { color: var(--accent); }

.contact-form { display: flex; flex-direction: column; gap: 28px; }
.form-row { display: flex; flex-direction: column; gap: 10px; }
.form-row label { font-size: 13px; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted-2); }
.form-row input,
.form-row textarea {
  border-bottom: 1px solid var(--ink);
  padding: 10px 0;
  font-size: 18px;
  color: var(--ink);
  transition: border-color 0.3s var(--ease);
}
.form-row input:focus,
.form-row textarea:focus { border-color: var(--accent); }
.form-row textarea { resize: vertical; min-height: 120px; }
.form-submit {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
}
.form-submit svg { transition: transform 0.3s var(--ease); }
.form-submit:hover svg { transform: translateX(8px); }

/* ---------- CTA ---------- */
.cta-band {
  padding: clamp(80px, 12vw, 180px) clamp(16px, 4vw, 40px);
  background: var(--dark);
  color: #fff;
  text-align: center;
}
.cta-band .big {
  font-size: clamp(44px, 8vw, 128px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-transform: capitalize;
}
.cta-band .cn { margin-top: 16px; font-size: clamp(18px, 2.4vw, 36px); color: rgba(255, 255, 255, 0.85); }
.cta-band .contact-btn { color: #fff; margin-top: clamp(32px, 5vw, 56px); }
.cta-band .contact-btn:hover { background: #fff; color: var(--dark); }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--dark);
  color: #eee;
  padding: clamp(40px, 5vw, 72px) clamp(16px, 4vw, 40px) 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  padding-bottom: clamp(32px, 4vw, 56px);
}
@media (min-width: 900px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; } }
.footer-brand .big {
  font-size: clamp(36px, 5vw, 72px);
  font-weight: 500;
  letter-spacing: -0.02em;
  text-transform: lowercase;
}
.footer-brand p { margin-top: 16px; color: rgba(255, 255, 255, 0.6); max-width: 420px; line-height: 1.9; }
.footer-col h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.16em; color: rgba(255, 255, 255, 0.5); margin-bottom: 18px; }
.footer-col a, .footer-col span { display: block; color: rgba(255, 255, 255, 0.85); line-height: 2.2; font-size: 15px; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
}

/* ---------- 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(32px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }

.page-fade { opacity: 0; animation: pageIn 0.7s var(--ease) forwards; }
@keyframes pageIn { to { opacity: 1; } }

/* ---------- 关于页 · 设计交付标准大卡片 ---------- */
.deliver-big-card {
  display: block;
  background: var(--dark);
  color: #eee;
  border-radius: 0;
  padding: clamp(30px, 3.5vw, 56px);
  margin-top: clamp(40px, 5vw, 64px);
  position: relative;
  overflow: hidden;
  transition: transform 0.35s var(--ease);
}
.deliver-big-card:hover { transform: translateY(-2px); }
.deliver-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  position: relative;
  z-index: 1;
}
.deliver-title .sec-label { color: #bbb; }
.deliver-title h3 {
  margin-top: 14px;
  font-size: clamp(30px, 3.6vw, 52px);
  font-weight: 500;
  color: #fff;
}
.deliver-title p { margin-top: 10px; font-size: 15px; color: rgba(255, 255, 255, 0.65); }
.deliver-arrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  padding: 12px 20px;
  border-radius: 44px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: #fff;
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
}
.deliver-big-card:hover .deliver-arrow { background: #fff; color: var(--dark); }
.deliver-arrow svg path { stroke: currentColor; }
.deliver-items {
  margin-top: clamp(26px, 3vw, 40px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px 32px;
  position: relative;
  z-index: 1;
}
@media (min-width: 720px) { .deliver-items { grid-template-columns: 1fr 1fr; } }
.deliver-items li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 15px;
  color: rgba(255, 255, 255, 0.88);
}
.deliver-items li span {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.08em;
}

/* ---------- 交付标准页 ---------- */
.standard-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: clamp(40px, 5vw, 72px);
}
@media (min-width: 760px) { .standard-grid { grid-template-columns: 1fr 1fr; } }
.standard-item {
  display: flex;
  gap: 20px;
  background: var(--white);
  padding: clamp(22px, 2.4vw, 36px);
}
.standard-item .no {
  font-size: clamp(20px, 2vw, 30px);
  font-weight: 500;
  line-height: 1;
  color: var(--accent);
  flex-shrink: 0;
}
.standard-item .text h3 { font-size: clamp(18px, 1.7vw, 26px); font-weight: 500; color: var(--ink); }
.standard-item .text .en {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: capitalize;
  color: var(--muted);
}
.standard-item .text p { margin-top: 12px; font-size: 14px; line-height: 1.9; color: var(--muted-2); }
.delivery-doc {
  margin-top: clamp(32px, 4vw, 56px);
}
.delivery-page {
  width: 100%;
  max-width: 1100px;
  aspect-ratio: 4 / 3;
  margin: 0 auto clamp(18px, 2vw, 28px);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0;
  overflow: hidden;
}
.delivery-page img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
body.craft-doc .delivery-page {
  max-width: 1300px;
  aspect-ratio: 16 / 9;
}

/* ---------- 关于页 · 合作方式 ---------- */
.coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 1.6vw, 24px);
  margin-top: clamp(40px, 5vw, 72px);
}
@media (min-width: 900px) { .coop-grid { grid-template-columns: 1fr 1fr; } }
.coop-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  padding: clamp(28px, 3vw, 44px) clamp(24px, 2.6vw, 40px);
}
.coop-badge {
  position: absolute;
  top: -1px;
  right: 24px;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--dark);
  color: #fff;
  font-size: 20px;
  font-weight: 500;
}
.coop-card h3 {
  font-size: clamp(26px, 2.6vw, 38px);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.coop-scope {
  margin-top: 10px;
  font-size: 14px;
  color: var(--accent);
}
.coop-desc {
  margin-top: 18px;
  font-size: 14px;
  line-height: 2;
  color: var(--muted-2);
}
.coop-pros, .coop-cons {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted-2);
}
.coop-pros { color: var(--ink); }
.coop-cons { color: var(--muted-2); }

/* ---------- 关于页 · 收费标准 ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 1.4vw, 20px);
  margin-top: clamp(40px, 5vw, 72px);
}
@media (min-width: 720px) { .pricing-grid { grid-template-columns: repeat(3, 1fr); } }
.price-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: clamp(28px, 3vw, 44px) clamp(20px, 2vw, 32px);
  text-align: center;
  transition: background 0.3s var(--ease);
}
.price-card:hover { background: var(--white); }
.price-card h3 {
  font-size: clamp(18px, 1.6vw, 24px);
  font-weight: 400;
  color: var(--muted-2);
}
.price-card .price {
  margin-top: 18px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}
.price-card .num {
  font-size: clamp(44px, 5vw, 72px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--accent);
}
.price-card .dash { font-size: clamp(20px, 2vw, 28px); color: var(--muted); }
.price-card .unit { font-size: 16px; color: var(--ink); }
.pricing-notes {
  margin-top: clamp(28px, 3.5vw, 48px);
  max-width: 980px;
  padding-top: clamp(24px, 3vw, 40px);
  border-top: 1px solid var(--line);
}
.pricing-notes p {
  position: relative;
  padding-left: 18px;
  margin-top: 10px;
  font-size: 14px;
  line-height: 2;
  color: var(--muted-2);
}
.pricing-notes p::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ink);
}

/* ---------- 关于页 · 施工交底 ---------- */
.briefing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: clamp(40px, 5vw, 72px);
}
@media (min-width: 760px) { .briefing-grid { grid-template-columns: 1fr 1fr; } }
.briefing-item {
  display: flex;
  align-items: baseline;
  gap: 18px;
  background: var(--white);
  padding: clamp(18px, 2vw, 28px) clamp(20px, 2.4vw, 36px);
}
.briefing-item span {
  font-size: clamp(18px, 1.6vw, 24px);
  font-weight: 500;
  color: var(--accent);
  flex-shrink: 0;
}
.briefing-item p { font-size: 14px; line-height: 1.9; color: var(--ink); }
.briefing-note {
  margin-top: 24px;
  font-size: 14px;
  line-height: 2;
  color: var(--muted-2);
}

/* ---------- 关于页 · 预约设计 ---------- */
.booking-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: clamp(36px, 4vw, 56px);
}
@media (min-width: 900px) { .booking-list { grid-template-columns: repeat(4, 1fr); } }
.booking-item {
  background: var(--white);
  padding: clamp(22px, 2.4vw, 34px);
}
.booking-item .no {
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.booking-item h4 { margin-top: 14px; font-size: clamp(16px, 1.5vw, 22px); font-weight: 500; color: var(--ink); }
.booking-item p { margin-top: 8px; font-size: 13px; line-height: 1.9; color: var(--muted-2); }

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  /* 头部：压缩高度，保证手机比例协调 */
  .site-header { padding: 12px clamp(16px, 4vw, 40px); }
  .site-header .logo, .logo-link { height: 56px; }
  .brand-text { display: none; }
  /* 导航直接显示：中文简洁链接，固定透明头部 */
  .site-header .nav { gap: 16px; }
  .site-header .nav-item { display: block; font-size: 14px; line-height: 56px; }
  .site-header .nav-item .en { display: none; }
  .site-header .nav-item .txt { display: block; line-height: 56px; }
  .site-header,
  .site-header.is-scrolled,
  .site-header.theme-light {
    background: transparent !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
  .header-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0 10px 14px;
    background: none;
    border: 0;
    color: inherit;
  }
  .burger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 24px;
  }
  .burger i {
    display: block;
    height: 2px;
    border-radius: 1px;
    background: currentColor;
  }
  .menu-label { display: none; }

  /* 首页轮播：隐藏箭头、标签下移、信息区与圆点分开 */
  .carousel-label { top: 92px; font-size: 11px; padding: 6px 12px; }
  .carousel-info { bottom: 64px; }
  .carousel-arrow { display: none; }
  .carousel-dots { bottom: 22px; }
  .hero-slogan { font-size: clamp(40px, 12vw, 64px); }
  .hero-slogan-cn { font-size: clamp(20px, 6vw, 32px); }
  .carousel-info h3 { font-size: 26px; }
  .carousel-dot { width: 22px; }
  .carousel-dot.active { width: 32px; }
  .sec-title { letter-spacing: -0.02em; }
  .sec-head { flex-direction: column; align-items: flex-start; }
  .count-badge { font-size: 48px; letter-spacing: -0.06em; }
  .pill { padding: 3px 12px; font-size: 12px; line-height: 24px; }
  .pill img, .pill svg { width: 16px; height: 16px; }
  .menu-side { display: none; }
  .menu-body { top: 40%; left: 16px; }
  .menu-item { gap: 10px; }
  .menu-item .en { font-size: 40px; }
  .menu-item .cn { font-size: 20px; }
  .menu-contact { width: 100%; max-width: 223px; }
  .menu-socials { justify-content: flex-start; }
  /* 案例索引：导航下方常驻，三排展示（面积 / 类型 / 风格） */
  .case-filter-bar { top: 80px; padding: 8px 0 8px 16px; }
  .case-filters { flex-direction: column; gap: 8px; padding-right: 16px; overflow: visible; }
  .filter-group {
    flex-wrap: nowrap;
    align-items: center;
    gap: 8px;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 2px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .filter-group::-webkit-scrollbar { display: none; }
  .filter-group + .filter-group { border-left: none; padding-left: 0; }
  .filter-label { flex: none; min-width: 44px; font-size: 11px; }
  .filter-pill { flex: none; font-size: 12px; line-height: 1; padding: 6px 12px; }
  .filter-count { display: none; }

  /* 案例轮盘：纵向分区，预览图在上、轮盘在中、信息在下，互不遮挡 */
  .case-ring-page { min-height: 100vh; }
  .ring-stage { touch-action: none; }
  .ring { top: 56%; }
  .ring-head { display: none; }
  .ring-item { --ring-w: 100px; }
  .ring-dense .ring-item { --ring-w: 88px; }
  .ring-item .ring-label { display: none; }
  .center-display {
    top: 0;
    left: 0;
    transform: none;
    width: 100%;
    height: 100%;
    padding: 205px 20px 0;
    justify-content: flex-start;
    gap: 14px;
  }
  .project-count {
    order: 1;
    display: block;
    position: relative;
    align-self: flex-start;
    color: var(--accent);
    font-size: 34px;
    font-weight: 500;
    line-height: 40px;
    letter-spacing: -3px;
    margin: 0;
  }
  .center-text { display: none; }
  .center-image-wrap { order: 2; width: 100%; max-width: 100%; min-width: 0; }
  .center-image { width: 100%; max-width: 100%; min-width: 0; }
  .center-group {
    order: 3;
    position: absolute;
    left: 20px;
    right: 20px;
    bottom: 112px;
    width: auto;
    flex-direction: row;
    justify-content: space-between;
    align-items: baseline;
    gap: 8px;
    margin-top: 0;
  }
  .center-group .remark { font-size: 16px; line-height: 16px; }
  .center-group .label { font-size: 12px; line-height: 12px; margin-top: 0; }
  .view-case-btn { align-self: flex-start; margin-top: 6px; font-size: 13px; padding: 8px 16px; }
  .case-hint { display: block; font-size: 11px; opacity: 0.7; }
  /* 文字排版：能单行显示的尽量单行 */
  body.page-fade { animation-duration: 0.35s; }
  .home-works-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
  .home-works-grid .project-card .title { font-size: 15px; }
  .home-works-grid .project-card .remark { font-size: 11px; }
  .project-card .title,
  .project-card .meta .remark,
  .center-group .remark,
  .center-group .label {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
  }
  .project-slogan .content { font-size: 24px; line-height: 1.4; }
  .project-slogan .sub { font-size: 17px; }
  .project-slogan .bottom { font-size: 12px; line-height: 1.8; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}