/* finesse · register=brand · A=warm-paper+charcoal+champagne · B=noto-sans-sc 900/300
 * C=fullbleed-photo-hero+editorial-split+asymmetric-grid · D=css-reveal+ken-burns
 * E=machined-aluminum-hairline · SOUL=7 SPECTACLE=3 DENSITY=5 */

/* ================= tokens ================= */
:root {
  --c-ink: #22262b;          /* 深灰正文 */
  --c-ink-2: #3c434b;
  --c-ink-3: #5c646d;        /* 辅助灰 */
  --c-silver: #8b939c;       /* 金属银 */
  --c-silver-l: #c3c9cf;
  --c-paper: #f6f5f1;        /* 暖白底 */
  --c-paper-2: #efeeea;
  --c-cool: #e9ecef;         /* 冷调浅灰带 */
  --c-dark: #1a1e23;         /* 深灰反白段 */
  --c-dark-2: #242a31;
  --c-gold: #c2a062;         /* 浅金点缀 */
  --c-gold-d: #a6854a;
  --c-gold-l: #dcc28d;
  --c-line: rgba(34, 38, 43, 0.09);
  --c-line-l: rgba(246, 245, 241, 0.14);
  --shadow-s: 0 2px 10px rgba(26, 30, 35, 0.06);
  --shadow-m: 0 10px 30px rgba(26, 30, 35, 0.10);
  --shadow-l: 0 24px 60px rgba(26, 30, 35, 0.16);
  --f-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --f-num: "Avenir Next", "Helvetica Neue", "Segoe UI", Arial, sans-serif;
  --nav-h: 76px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --z-nav: 900;
  --z-float: 940;
  --z-modal: 960;
  --z-toast: 980;
}

/* ================= reset / base ================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: clip; }
body {
  font-family: var(--f-sans);
  color: var(--c-ink);
  background: var(--c-paper);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: 15px; }
::selection { background: rgba(194, 160, 98, 0.28); }

/* 全局细颗粒质感层 */
body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 9990;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

.skip-link {
  position: absolute; left: -999px; top: 8px; z-index: 9999;
  background: var(--c-ink); color: var(--c-paper);
  padding: 10px 18px; border-radius: 4px;
}
.skip-link:focus { left: 8px; }

.container { width: min(1240px, 92vw); margin-inline: auto; }
.container-wide { width: min(1480px, 94vw); margin-inline: auto; }

/* ================= 通用模块头 ================= */
.sec { padding: clamp(64px, 8vw, 120px) 0; }
.sec-head { margin-bottom: clamp(36px, 5vw, 64px); }
.sec-eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 13px; letter-spacing: 0.32em; color: var(--c-gold-d);
  text-transform: uppercase; font-weight: 500;
}
.sec-eyebrow::before { content: ""; width: 34px; height: 1px; background: var(--c-gold); }
.sec-title {
  margin-top: 14px;
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 900; letter-spacing: -0.02em; line-height: 1.18;
}
.sec-sub { margin-top: 14px; color: var(--c-ink-3); font-size: 16px; font-weight: 300; max-width: 640px; }
.sec-head--center { text-align: center; }
.sec-head--center .sec-eyebrow::before { display: none; }
.sec-head--center .sec-eyebrow::after { content: ""; width: 34px; height: 1px; background: var(--c-gold); }
.sec-head--center .sec-sub { margin-inline: auto; }
.dark .sec-title { color: var(--c-paper); }
.dark .sec-sub { color: rgba(246, 245, 241, 0.62); }
.dark .sec-eyebrow { color: var(--c-gold-l); }

/* ================= 按钮 ================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 50px; padding: 0 34px;
  font-size: 16px; font-weight: 500; letter-spacing: 0.06em;
  border-radius: 3px;
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), color 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
  will-change: transform;
}
.btn:focus-visible { outline: 2px solid var(--c-gold); outline-offset: 3px; }
.btn-gold {
  background: linear-gradient(160deg, var(--c-gold-l), var(--c-gold) 55%, var(--c-gold-d));
  color: #241d10; box-shadow: 0 8px 24px rgba(166, 133, 74, 0.32);
}
.btn-gold:hover { transform: translateY(-2px) scale(1.015); box-shadow: 0 12px 30px rgba(166, 133, 74, 0.42); }
.btn-ghost {
  border: 1px solid rgba(246, 245, 241, 0.55); color: var(--c-paper);
  background: rgba(26, 30, 35, 0.12); backdrop-filter: blur(4px);
}
.btn-ghost:hover { background: rgba(246, 245, 241, 0.14); transform: translateY(-2px); }
.btn-dark { background: var(--c-ink); color: var(--c-paper); }
.btn-dark:hover { background: var(--c-dark); transform: translateY(-2px); box-shadow: var(--shadow-m); }
.btn-line { border: 1px solid var(--c-line); color: var(--c-ink); }
.btn-line:hover { border-color: var(--c-gold); color: var(--c-gold-d); transform: translateY(-2px); }
.btn .arr { transition: transform 0.35s var(--ease); }
.btn:hover .arr { transform: translateX(5px); }

/* ================= 顶部导航 ================= */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: var(--z-nav);
  height: var(--nav-h);
  transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease), backdrop-filter 0.4s var(--ease);
}
.nav-inner {
  width: min(1480px, 94vw); margin-inline: auto; height: 100%;
  display: flex; align-items: center; gap: 32px;
}
.nav.is-over-hero { background: transparent; }
.nav.is-solid {
  background: rgba(246, 245, 241, 0.88);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--c-line), var(--shadow-s);
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark {
  width: 40px; height: 40px; flex: none; border-radius: 6px;
  background: #fcfcfb;
  display: grid; place-items: center;
  box-shadow: var(--shadow-s);
}
.brand-mark svg { width: 22px; height: 22px; }
.brand-txt { display: flex; flex-direction: column; line-height: 1.25; }
.brand-name {
  font-size: 19px; font-weight: 900; letter-spacing: 0.12em;
  color: var(--c-paper); transition: color 0.4s var(--ease);
}
.brand-en { font-size: 10px; letter-spacing: 0.34em; color: var(--c-gold-l); text-transform: uppercase; transition: color 0.4s var(--ease); }
.nav.is-solid .brand-name { color: var(--c-ink); }
.nav.is-solid .brand-en { color: var(--c-gold-d); }

.nav-menu { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.nav-menu a {
  position: relative; padding: 8px 14px; font-size: 15px; letter-spacing: 0.04em;
  color: rgba(246, 245, 241, 0.85); transition: color 0.3s var(--ease);
  white-space: nowrap;
}
.nav-menu a::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px;
  background: var(--c-gold); transform: scaleX(0); transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.nav-menu a:hover::after, .nav-menu a.active::after { transform: scaleX(1); }
.nav-menu a.active { color: var(--c-gold-l); font-weight: 500; }
.nav.is-solid .nav-menu a { color: var(--c-ink-2); }
.nav.is-solid .nav-menu a:hover { color: var(--c-ink); }
.nav.is-solid .nav-menu a.active { color: var(--c-gold-d); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-tel {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--f-num); font-size: 15px; font-weight: 600; letter-spacing: 0.04em;
  color: var(--c-paper); transition: color 0.3s var(--ease);
}
.nav-tel svg { width: 17px; height: 17px; }
.nav.is-solid .nav-tel { color: var(--c-ink); }
.nav-btn { min-height: 42px; padding: 0 22px; font-size: 14px; }
.nav-burger {
  display: none; margin-left: auto; width: 46px; height: 46px;
  border-radius: 6px; position: relative;
}
.nav-burger span {
  position: absolute; left: 12px; right: 12px; height: 2px; border-radius: 2px;
  background: var(--c-paper); transition: transform 0.35s var(--ease), opacity 0.25s, background 0.3s;
}
.nav.is-solid .nav-burger span, .nav.drawer-open .nav-burger span { background: var(--c-ink); }
.nav-burger span:nth-child(1) { top: 16px; }
.nav-burger span:nth-child(2) { top: 22px; }
.nav-burger span:nth-child(3) { top: 28px; }
.nav.drawer-open .nav-burger span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav.drawer-open .nav-burger span:nth-child(2) { opacity: 0; }
.nav.drawer-open .nav-burger span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav.drawer-open { background: rgba(246, 245, 241, 0.97); }
.nav.drawer-open .brand-name { color: var(--c-ink); }
.nav.drawer-open .brand-en { color: var(--c-gold-d); }

/* 移动端抽屉菜单 */
.drawer {
  position: fixed; inset: var(--nav-h) 0 0 0; z-index: calc(var(--z-nav) - 1);
  background: rgba(246, 245, 241, 0.98); backdrop-filter: blur(16px);
  padding: 32px 6vw calc(96px + env(safe-area-inset-bottom, 0px));
  transform: translateY(-8px); opacity: 0; visibility: hidden;
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease), visibility 0.35s;
  overflow-y: auto;
}
.drawer.open { transform: none; opacity: 1; visibility: visible; }
.drawer a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 17px 4px; font-size: 18px; font-weight: 500; color: var(--c-ink);
  border-bottom: 1px solid var(--c-line);
}
.drawer a small { font-size: 12px; color: var(--c-silver); letter-spacing: 0.18em; font-family: var(--f-num); }
.drawer-cta { margin-top: 28px; display: grid; gap: 12px; }
.drawer-cta .btn { width: 100%; }

/* ================= 首屏 HERO ================= */
.hero {
  position: relative; min-height: max(640px, 100svh);
  display: flex; align-items: center;
  color: var(--c-paper); overflow: clip;
  background: var(--c-dark);
}
.hero-media { position: absolute; inset: 0; z-index: 0; }
.hero-slide {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: center 42%;
  transform-origin: 52% 46%;
  opacity: 0; transition: opacity 1.6s var(--ease);
}
.hero-slide.is-active { opacity: 1; }
.hero.is-anim .hero-slide.is-active { animation: kenburns 26s var(--ease) infinite alternate; }
@keyframes kenburns {
  from { transform: scale(1); }
  to { transform: scale(1.08) translate(-0.6%, 0.8%); }
}
/* 轮播指示条 */
.hero-dots { position: absolute; right: 4vw; bottom: 34px; z-index: 6; display: flex; gap: 10px; }
.hero-dot {
  width: 26px; height: 3px; border-radius: 2px;
  background: rgba(246, 245, 241, 0.32);
  transition: background 0.4s var(--ease), width 0.4s var(--ease);
}
.hero-dot:hover { background: rgba(246, 245, 241, 0.6); }
.hero-dot.is-active { background: var(--c-gold-l); width: 44px; }
.hero-dot:focus-visible { outline: 2px solid var(--c-gold); outline-offset: 3px; }
/* 压暗层：底部文字区 + 顶部导航区 + 四周暗角 */
.hero-scrim {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% 30%, transparent 52%, rgba(15, 17, 20, 0.42) 100%),
    linear-gradient(to top, rgba(14, 16, 19, 0.86) 0%, rgba(14, 16, 19, 0.42) 30%, rgba(14, 16, 19, 0.08) 58%, rgba(14, 16, 19, 0.32) 100%);
}
.hero-inner {
  position: relative; z-index: 5;
  width: min(1480px, 92vw); margin-inline: auto;
  padding: calc(var(--nav-h) + 48px) 0 96px;
}
.hero-kicker {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 13px; letter-spacing: 0.4em; color: var(--c-gold-l); font-weight: 500;
}
.hero-kicker::before { content: ""; width: 44px; height: 1px; background: var(--c-gold); }
.hero-title {
  margin-top: 22px;
  font-size: clamp(38px, 6.2vw, 76px);
  font-weight: 900; letter-spacing: 0.01em; line-height: 1.14;
  text-shadow: 0 2px 30px rgba(10, 12, 14, 0.35);
  max-width: 14em;
}
.hero-title em { font-style: normal; color: var(--c-gold-l); }
.hero-sub {
  margin-top: 20px; max-width: 46em;
  font-size: clamp(15px, 1.5vw, 18px); font-weight: 300; letter-spacing: 0.08em;
  color: rgba(246, 245, 241, 0.82);
}
.hero-tags { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 10px 18px; border-radius: 3px;
  border: 1px solid rgba(246, 245, 241, 0.24);
  background: rgba(22, 25, 29, 0.34); backdrop-filter: blur(6px);
  font-size: 15px; font-weight: 500; letter-spacing: 0.14em;
  transition: border-color 0.3s, background 0.3s, transform 0.3s var(--ease);
}
.hero-tag:hover { border-color: rgba(194, 160, 98, 0.65); background: rgba(194, 160, 98, 0.14); transform: translateY(-2px); }
.hero-tag svg { width: 16px; height: 16px; color: var(--c-gold-l); flex: none; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 40px; }
.hero-scroll {
  position: absolute; left: 50%; bottom: 26px; z-index: 5;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: rgba(246, 245, 241, 0.55); font-size: 11px; letter-spacing: 0.34em;
}
.hero-scroll i {
  width: 1px; height: 40px; background: rgba(246, 245, 241, 0.28); position: relative; overflow: hidden;
}
.hero-scroll i::after {
  content: ""; position: absolute; left: 0; top: -40%; width: 100%; height: 40%;
  background: var(--c-gold-l);
  animation: scrolldrop 2.2s var(--ease) infinite;
}
@keyframes scrolldrop { to { top: 110%; } }

/* ================= 品牌简介 ================= */
.brand-intro { background: var(--c-paper); }
.intro-grid {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(36px, 5vw, 72px); align-items: center;
}
.intro-copy p { color: var(--c-ink-2); font-weight: 300; margin-top: 18px; }
.intro-copy p strong { font-weight: 600; color: var(--c-ink); }
.intro-stats {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 34px; border-top: 1px solid var(--c-line);
}
.intro-stat { padding: 22px 8px 0; }
.intro-stat + .intro-stat { border-left: 1px solid var(--c-line); padding-left: 24px; }
.intro-stat b { font-family: var(--f-num); font-size: clamp(24px, 2.4vw, 32px); font-weight: 700; letter-spacing: -0.01em; color: var(--c-ink); }
.intro-stat b sup { font-size: 0.5em; color: var(--c-gold-d); margin-left: 2px; }
.intro-stat span { display: block; margin-top: 4px; font-size: 13px; color: var(--c-ink-3); letter-spacing: 0.06em; }
.intro-figure { position: relative; }
.intro-figure .fig-main {
  border-radius: 6px; overflow: hidden; box-shadow: var(--shadow-l);
  aspect-ratio: 4 / 3.4;
}
.intro-figure .fig-main img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.intro-figure:hover .fig-main img { transform: scale(1.035); }
.intro-figure .fig-badge {
  position: absolute; left: -26px; bottom: -26px; z-index: 2;
  background: var(--c-dark); color: var(--c-paper);
  padding: 22px 30px; border-radius: 6px; box-shadow: var(--shadow-m);
}
.fig-badge b { display: block; font-size: 17px; font-weight: 700; letter-spacing: 0.1em; }
.fig-badge span { font-size: 12.5px; color: rgba(246, 245, 241, 0.62); letter-spacing: 0.16em; }

/* ================= 产品速览 ================= */
.products { background: var(--c-cool); }
.prod-flag {
  position: relative; border-radius: 6px; overflow: hidden;
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  background: var(--c-dark); color: var(--c-paper);
  box-shadow: var(--shadow-l); margin-bottom: 26px;
  min-height: 380px;
}
.prod-flag-media { position: relative; overflow: hidden; min-height: 280px; }
.prod-flag-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.prod-flag:hover .prod-flag-media img { transform: scale(1.045); }
.prod-flag-body { padding: clamp(28px, 3.4vw, 52px); display: flex; flex-direction: column; justify-content: center; }
.prod-flag-tag { font-size: 12.5px; letter-spacing: 0.3em; color: var(--c-gold-l); }
.prod-flag-body h3 { margin-top: 12px; font-size: clamp(24px, 2.6vw, 34px); font-weight: 900; letter-spacing: 0.02em; }
.prod-flag-body p { margin-top: 14px; font-weight: 300; color: rgba(246, 245, 241, 0.72); font-size: 15px; max-width: 30em; }
.prod-flag-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.prod-flag-points li {
  padding: 6px 14px; font-size: 13px; letter-spacing: 0.1em;
  border: 1px solid rgba(246, 245, 241, 0.22); border-radius: 2px; color: rgba(246, 245, 241, 0.85);
}
.prod-flag-link {
  margin-top: 26px; display: inline-flex; align-items: center; gap: 8px;
  color: var(--c-gold-l); font-size: 15px; letter-spacing: 0.08em; align-self: flex-start;
}
.prod-flag-link .arr { transition: transform 0.3s var(--ease); }
.prod-flag-link:hover .arr { transform: translateX(6px); }

.prod-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.prod-card {
  position: relative; background: #fbfaf8; border-radius: 6px; overflow: hidden;
  box-shadow: var(--shadow-s); border: 1px solid var(--c-line);
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease);
  display: flex; flex-direction: column;
}
.prod-card:hover { transform: translateY(-7px); box-shadow: var(--shadow-l); }
.prod-card-media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; }
.prod-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease); }
.prod-card:hover .prod-card-media img { transform: scale(1.06); }
.prod-card-media::after {
  content: ""; position: absolute; inset: auto 0 0 0; height: 54%;
  background: linear-gradient(to top, rgba(20, 23, 27, 0.38), transparent);
  opacity: 0; transition: opacity 0.5s var(--ease);
}
.prod-card:hover .prod-card-media::after { opacity: 1; }
.prod-num {
  position: absolute; top: 12px; left: 14px; z-index: 2;
  font-family: var(--f-num); font-size: 12px; letter-spacing: 0.22em;
  color: var(--c-paper); background: rgba(26, 30, 35, 0.55); backdrop-filter: blur(4px);
  padding: 4px 10px; border-radius: 2px;
}
.prod-card-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.prod-card-body h3 { font-size: 19px; font-weight: 700; letter-spacing: 0.06em; }
.prod-card-body p { margin-top: 8px; font-size: 14px; color: var(--c-ink-3); font-weight: 300; flex: 1; }
.prod-card-link {
  margin-top: 16px; display: inline-flex; align-items: center; gap: 7px;
  font-size: 14px; color: var(--c-gold-d); letter-spacing: 0.06em;
}
.prod-card-link .arr { transition: transform 0.3s var(--ease); }
.prod-card-link:hover .arr { transform: translateX(5px); }
.products-more { margin-top: 40px; text-align: center; }

/* ================= 核心优势 ================= */
.advantages { background: var(--c-paper); }
.adv-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--c-line); border-left: 1px solid var(--c-line);
}
.adv-item {
  position: relative; padding: clamp(26px, 3vw, 42px);
  border-right: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line);
  background: transparent; transition: background 0.4s var(--ease);
}
.adv-item:hover { background: #fbfaf7; }
.adv-num {
  font-family: var(--f-num); font-size: 15px; font-weight: 600; letter-spacing: 0.18em;
  color: var(--c-gold-d); display: flex; align-items: center; gap: 10px;
}
.adv-num::after { content: ""; height: 1px; width: 42px; background: var(--c-gold); opacity: 0.6; }
.adv-item h3 { margin-top: 16px; font-size: 19px; font-weight: 700; letter-spacing: 0.05em; }
.adv-item p { margin-top: 10px; font-size: 14.5px; color: var(--c-ink-3); font-weight: 300; }

/* ================= 工程案例 ================= */
.cases { background: var(--c-cool); }
.case-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 34px; }
.case-tab {
  padding: 10px 22px; font-size: 14.5px; letter-spacing: 0.08em; border-radius: 3px;
  border: 1px solid var(--c-line); color: var(--c-ink-2); background: transparent;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease), background 0.3s var(--ease); min-height: 44px;
}
.case-tab:hover { border-color: var(--c-gold); color: var(--c-gold-d); }
.case-tab.active { background: var(--c-dark); border-color: var(--c-dark); color: var(--c-paper); }
.case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.case-card {
  position: relative; border-radius: 6px; overflow: hidden; cursor: zoom-in;
  aspect-ratio: 4 / 3; box-shadow: var(--shadow-s);
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease), opacity 0.4s, scale 0.4s;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-l); }
.case-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease); }
.case-card:hover img { transform: scale(1.06); }
.case-cap {
  position: absolute; inset: auto 0 0 0; padding: 40px 20px 16px;
  background: linear-gradient(to top, rgba(16, 18, 21, 0.82), transparent);
  color: var(--c-paper);
}
.case-cap small { display: block; font-size: 12px; letter-spacing: 0.24em; color: var(--c-gold-l); }
.case-cap b { display: block; margin-top: 4px; font-size: 16.5px; font-weight: 700; letter-spacing: 0.05em; }
.case-card.hide { display: none; }
/* 灯箱 */
.lightbox {
  position: fixed; inset: 0; z-index: var(--z-modal);
  background: rgba(14, 16, 19, 0.92); backdrop-filter: blur(8px);
  display: grid; place-items: center; padding: 5vh 4vw;
  opacity: 0; visibility: hidden; transition: opacity 0.35s var(--ease), visibility 0.35s;
}
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox img {
  max-width: min(1080px, 92vw); max-height: 78vh; border-radius: 4px;
  box-shadow: var(--shadow-l); object-fit: contain;
  transform: scale(0.96); transition: transform 0.4s var(--ease);
}
.lightbox.open img { transform: none; }
.lightbox-cap { margin-top: 18px; text-align: center; color: rgba(246, 245, 241, 0.85); font-size: 15px; letter-spacing: 0.06em; }
.lightbox-close {
  position: absolute; top: 22px; right: 26px; width: 48px; height: 48px;
  color: var(--c-paper); font-size: 26px; border-radius: 50%;
  display: grid; place-items: center; border: 1px solid rgba(246, 245, 241, 0.3);
  transition: background 0.3s, transform 0.3s;
}
.lightbox-close:hover { background: rgba(246, 245, 241, 0.12); transform: rotate(90deg); }

/* ================= 工厂实力（深灰反白段） ================= */
.factory { background: var(--c-dark); color: var(--c-paper); position: relative; overflow: clip; }
.factory::before {
  content: ""; position: absolute; top: -180px; right: -140px; width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(194, 160, 98, 0.1), transparent 68%);
  pointer-events: none;
}
.factory-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(36px, 5vw, 72px); align-items: center; }
.factory-copy p { margin-top: 18px; color: rgba(246, 245, 241, 0.72); font-weight: 300; }
.factory-list { margin-top: 28px; display: grid; gap: 14px; }
.factory-list li {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 14px 18px; border: 1px solid rgba(246, 245, 241, 0.1); border-radius: 4px;
  background: rgba(246, 245, 241, 0.03);
  transition: border-color 0.3s, background 0.3s;
}
.factory-list li:hover { border-color: rgba(194, 160, 98, 0.5); background: rgba(194, 160, 98, 0.06); }
.factory-list svg { width: 19px; height: 19px; color: var(--c-gold-l); flex: none; margin-top: 3px; }
.factory-list b { display: block; font-size: 15.5px; letter-spacing: 0.05em; }
.factory-list span { font-size: 13.5px; color: rgba(246, 245, 241, 0.6); font-weight: 300; }
.factory-strip { display: grid; grid-template-columns: 1.35fr 1fr; grid-template-rows: 1fr 1fr; gap: 16px; min-height: 460px; }
.factory-strip figure { position: relative; border-radius: 6px; overflow: hidden; }
.factory-strip figure:first-child { grid-row: 1 / 3; }
.factory-strip img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.factory-strip figure:hover img { transform: scale(1.05); }
.factory-strip figcaption {
  position: absolute; left: 0; bottom: 0; z-index: 2;
  padding: 8px 16px; font-size: 12.5px; letter-spacing: 0.2em;
  background: rgba(20, 23, 27, 0.66); backdrop-filter: blur(4px); color: var(--c-gold-l);
}

/* ================= 服务流程 ================= */
.process { background: var(--c-paper); }
.process-track {
  display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 0;
  position: relative; margin-top: 10px;
}
.process-track::before {
  content: ""; position: absolute; top: 27px; left: 6%; right: 6%; height: 1px;
  background: linear-gradient(to right, transparent, var(--c-silver-l) 12%, var(--c-silver-l) 88%, transparent);
}
.process-step { position: relative; text-align: center; padding: 0 10px; }
.ps-dot {
  width: 54px; height: 54px; margin-inline: auto; border-radius: 50%;
  display: grid; place-items: center; position: relative; z-index: 2;
  background: var(--c-paper); border: 1px solid var(--c-line);
  font-family: var(--f-num); font-weight: 700; font-size: 16px; color: var(--c-ink-2);
  transition: background 0.4s var(--ease), color 0.4s var(--ease), border-color 0.4s var(--ease), transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.process-step:hover .ps-dot {
  background: var(--c-dark); color: var(--c-gold-l); border-color: var(--c-dark);
  transform: translateY(-4px); box-shadow: var(--shadow-m);
}
.process-step h3 { margin-top: 16px; font-size: 16px; font-weight: 700; letter-spacing: 0.08em; }
.process-step p { margin-top: 6px; font-size: 12.5px; color: var(--c-ink-3); font-weight: 300; line-height: 1.6; }

/* ================= 客户口碑 ================= */
.voices { background: var(--c-cool); }
.voice-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.voice-card {
  position: relative; background: #fbfaf8; border: 1px solid var(--c-line);
  border-radius: 6px; padding: 30px 28px 26px; box-shadow: var(--shadow-s);
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease);
}
.voice-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-m); }
.voice-card::before {
  content: "\201C"; position: absolute; top: 6px; left: 20px;
  font-size: 74px; line-height: 1; color: var(--c-gold); opacity: 0.32; font-family: Georgia, serif;
}
.voice-stars { display: flex; gap: 3px; margin-top: 14px; }
.voice-stars svg { width: 15px; height: 15px; color: var(--c-gold); }
.voice-card p { margin-top: 14px; font-size: 15px; color: var(--c-ink-2); }
.voice-who { margin-top: 20px; display: flex; align-items: center; gap: 12px; border-top: 1px solid var(--c-line); padding-top: 16px; }
.voice-ava {
  width: 42px; height: 42px; border-radius: 50%; flex: none;
  display: grid; place-items: center;
  background: linear-gradient(150deg, #39404a, var(--c-dark)); color: var(--c-gold-l);
  font-weight: 700; font-size: 16px;
}
.voice-who b { display: block; font-size: 14.5px; }
.voice-who span { font-size: 12.5px; color: var(--c-ink-3); }
.voice-note { margin-top: 22px; font-size: 12px; color: var(--c-silver); text-align: right; }

/* ================= 咨询转化区 ================= */
.contact {
  position: relative; background: var(--c-dark); color: var(--c-paper); overflow: clip;
}
.contact::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(60% 90% at 85% 10%, rgba(194, 160, 98, 0.13), transparent 60%),
    radial-gradient(50% 80% at 8% 95%, rgba(139, 147, 156, 0.12), transparent 60%);
  pointer-events: none;
}
.contact-grid {
  position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(36px, 5vw, 80px); align-items: center;
}
.contact-copy .sec-title { color: var(--c-paper); }
.contact-copy p { margin-top: 18px; color: rgba(246, 245, 241, 0.7); font-weight: 300; max-width: 30em; }
.contact-lines { margin-top: 30px; display: grid; gap: 16px; }
.contact-line { display: flex; align-items: center; gap: 14px; }
.contact-line svg { width: 20px; height: 20px; color: var(--c-gold-l); flex: none; }
.contact-line b { font-family: var(--f-num); font-size: 20px; font-weight: 700; letter-spacing: 0.04em; }
.contact-line span { font-size: 13px; color: rgba(246, 245, 241, 0.55); margin-left: 10px; letter-spacing: 0.1em; }
.contact-form {
  background: rgba(246, 245, 241, 0.045); border: 1px solid rgba(246, 245, 241, 0.12);
  border-radius: 8px; padding: clamp(26px, 3vw, 40px);
  backdrop-filter: blur(6px);
}
.contact-form h3 { font-size: 19px; font-weight: 700; letter-spacing: 0.08em; }
.contact-form .form-tip { margin-top: 6px; font-size: 13px; color: rgba(246, 245, 241, 0.55); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-field { margin-top: 18px; }
.form-field label { display: block; font-size: 13px; letter-spacing: 0.08em; color: rgba(246, 245, 241, 0.7); margin-bottom: 7px; }
.form-field label i { color: var(--c-gold-l); font-style: normal; margin-left: 2px; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; padding: 12px 14px; border-radius: 4px;
  border: 1px solid rgba(246, 245, 241, 0.18); background: rgba(20, 23, 27, 0.4);
  color: var(--c-paper); transition: border-color 0.3s, background 0.3s;
}
.form-field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23c2a062' fill='none' stroke-width='1.6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }
.form-field select option { color: var(--c-ink); background: var(--c-paper); }
.form-field textarea { resize: vertical; min-height: 84px; }
.form-field input::placeholder, .form-field textarea::placeholder { color: rgba(246, 245, 241, 0.35); }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none; border-color: var(--c-gold); background: rgba(20, 23, 27, 0.62);
}
.form-field.err input, .form-field.err select { border-color: #d0735e; }
.form-err-msg { display: none; font-size: 12px; color: #e2907d; margin-top: 5px; }
.form-field.err .form-err-msg { display: block; }
.contact-form .btn { width: 100%; margin-top: 24px; min-height: 52px; }
.form-privacy { margin-top: 12px; font-size: 12px; color: rgba(246, 245, 241, 0.45); text-align: center; }

/* ================= 页脚 ================= */
.footer { background: #14171b; color: rgba(246, 245, 241, 0.62); font-size: 14px; }
.footer-main {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: clamp(28px, 4vw, 56px);
  padding: clamp(48px, 6vw, 72px) 0 44px;
  border-bottom: 1px solid rgba(246, 245, 241, 0.08);
}
.footer-brand .brand-name { color: var(--c-paper); }
.footer-brand p { margin-top: 16px; font-weight: 300; font-size: 13.5px; max-width: 26em; }
.footer h4 { color: var(--c-paper); font-size: 15px; letter-spacing: 0.12em; margin-bottom: 18px; }
.footer-links { display: grid; gap: 11px; }
.footer-links a { transition: color 0.3s; font-weight: 300; }
.footer-links a:hover { color: var(--c-gold-l); }
.footer-contact { display: grid; gap: 13px; font-weight: 300; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact svg { width: 16px; height: 16px; color: var(--c-gold); flex: none; margin-top: 4px; }
.footer-bottom {
  display: flex; flex-wrap: wrap; gap: 10px 26px; align-items: center; justify-content: space-between;
  padding: 22px 0 calc(22px + env(safe-area-inset-bottom, 0px)); font-size: 12.5px; color: rgba(246, 245, 241, 0.4);
}
.footer-bottom a:hover { color: var(--c-gold-l); }

/* ================= 悬浮咨询（Web 右侧） ================= */
.floatbar {
  position: fixed; right: 22px; top: 50%; transform: translateY(-50%);
  z-index: var(--z-float); display: grid; gap: 10px;
}
.float-item { position: relative; }
.float-btn {
  width: 56px; height: 56px; border-radius: 8px;
  display: grid; place-items: center;
  background: rgba(24, 27, 32, 0.88); backdrop-filter: blur(8px);
  color: var(--c-paper); border: 1px solid rgba(246, 245, 241, 0.1);
  box-shadow: var(--shadow-m);
  transition: background 0.3s, transform 0.3s var(--ease);
}
.float-btn svg { width: 22px; height: 22px; }
.float-btn:hover { background: var(--c-gold-d); transform: translateY(-3px); }
.float-item--gold .float-btn { background: linear-gradient(160deg, var(--c-gold-l), var(--c-gold-d)); color: #241d10; }
.float-pop {
  position: absolute; right: calc(100% + 14px); top: 50%; transform: translateY(-50%) translateX(8px);
  background: rgba(24, 27, 32, 0.94); color: var(--c-paper); backdrop-filter: blur(8px);
  border: 1px solid rgba(246, 245, 241, 0.12); border-radius: 8px;
  padding: 14px 18px; white-space: nowrap; font-size: 13.5px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
}
.float-item:hover .float-pop, .float-item:focus-within .float-pop {
  opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); pointer-events: auto;
}
.float-pop b { display: block; font-family: var(--f-num); font-size: 16px; letter-spacing: 0.04em; color: var(--c-gold-l); }
.float-pop span { color: rgba(246, 245, 241, 0.6); font-size: 12px; }
.float-top { opacity: 0; visibility: hidden; transform: translateY(-50%) translateX(12px); transition: opacity 0.4s var(--ease), visibility 0.4s, transform 0.4s var(--ease); }
.float-top.show { opacity: 1; visibility: visible; transform: none; }
.float-top .float-btn { width: 46px; height: 46px; margin-left: auto; }

/* H5 底部固定咨询条 */
.mobile-cta {
  display: none;
  position: fixed; left: 0; right: 0; bottom: 0; z-index: var(--z-float);
  background: rgba(24, 27, 32, 0.94); backdrop-filter: blur(12px);
  border-top: 1px solid rgba(246, 245, 241, 0.1);
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom, 0px));
  gap: 12px;
}
.mobile-cta .btn { flex: 1; min-height: 48px; font-size: 15px; }
.mobile-cta .btn-wechat { flex: 0 0 52px; padding: 0; width: 52px; }
.mobile-cta .btn-wechat svg { width: 22px; height: 22px; }

/* ================= 弹窗 / 提示 ================= */
.modal {
  position: fixed; inset: 0; z-index: var(--z-modal);
  display: grid; place-items: center; padding: 20px;
  background: rgba(14, 16, 19, 0.6); backdrop-filter: blur(6px);
  opacity: 0; visibility: hidden; transition: opacity 0.35s var(--ease), visibility 0.35s;
}
.modal.open { opacity: 1; visibility: visible; }
.modal-box {
  width: min(520px, 100%); background: var(--c-paper); border-radius: 10px;
  box-shadow: var(--shadow-l); padding: clamp(24px, 4vw, 40px);
  transform: translateY(16px) scale(0.98); transition: transform 0.4s var(--ease);
  max-height: 90vh; overflow-y: auto;
}
.modal.open .modal-box { transform: none; }
.modal-box h3 { font-size: 21px; font-weight: 900; letter-spacing: 0.04em; }
.modal-box .form-tip { margin-top: 6px; font-size: 13px; color: var(--c-ink-3); }
.modal .form-field label { color: var(--c-ink-2); }
.modal .form-field input, .modal .form-field select, .modal .form-field textarea {
  background: #fdfdfb; border-color: rgba(34, 38, 43, 0.14); color: var(--c-ink);
}
.modal .form-field input::placeholder, .modal .form-field textarea::placeholder { color: rgba(34, 38, 43, 0.35); }
.modal .form-field input:focus, .modal .form-field select:focus, .modal .form-field textarea:focus {
  border-color: var(--c-gold); background: #fefefd;
}
.modal .form-field.err input, .modal .form-field.err select { border-color: #c2543c; }
.modal .form-err-msg { color: #c2543c; }
.modal-close {
  position: absolute; top: 14px; right: 14px; width: 40px; height: 40px;
  display: grid; place-items: center; border-radius: 50%; color: var(--c-ink-3);
  font-size: 20px; transition: background 0.3s, color 0.3s;
}
.modal-close:hover { background: rgba(34, 38, 43, 0.06); color: var(--c-ink); }
.modal-box-wrap { position: relative; width: min(520px, 100%); }
.toast {
  position: fixed; left: 50%; bottom: 36px; z-index: var(--z-toast);
  transform: translateX(-50%) translateY(16px);
  background: var(--c-dark); color: var(--c-paper);
  border: 1px solid rgba(246, 245, 241, 0.14);
  padding: 14px 26px; border-radius: 6px; box-shadow: var(--shadow-l);
  font-size: 15px; letter-spacing: 0.05em;
  opacity: 0; visibility: hidden; transition: opacity 0.4s var(--ease), visibility 0.4s, transform 0.4s var(--ease);
  display: flex; align-items: center; gap: 10px; max-width: 90vw;
}
.toast.show { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.toast svg { width: 19px; height: 19px; color: var(--c-gold-l); flex: none; }

/* ================= 滚动渐入 ================= */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* ================= 响应式 ================= */
@media (max-width: 1200px) {
  .prod-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process-track { grid-template-columns: repeat(4, minmax(0, 1fr)); row-gap: 34px; }
  .process-track::before { display: none; }
}
@media (max-width: 960px) {
  :root { --nav-h: 64px; }
  .nav-menu, .nav-cta { display: none; }
  .nav-burger { display: block; }
  .floatbar { display: none; }
  .mobile-cta { display: flex; }
  body { padding-bottom: calc(66px + env(safe-area-inset-bottom, 0px)); }
  .hero { min-height: max(560px, 92svh); }
  .hero-inner { padding-bottom: 72px; }
  .hero-scroll { display: none; }
  .hero-dots { right: auto; left: 50%; transform: translateX(-50%); bottom: calc(88px + env(safe-area-inset-bottom, 0px)); }
  .intro-grid, .factory-grid, .contact-grid { grid-template-columns: 1fr; }
  .intro-figure .fig-badge { left: 14px; bottom: -20px; padding: 16px 22px; }
  .intro-figure { margin-bottom: 26px; }
  .prod-flag { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .factory-strip { min-height: 0; grid-template-rows: auto auto; }
  .factory-strip figure { aspect-ratio: 4 / 3; }
  .factory-strip figure:first-child { grid-row: auto; grid-column: 1 / 3; }
  .voice-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-bottom { justify-content: center; text-align: center; }
  .hero-title { font-size: clamp(32px, 8.6vw, 44px); }
}
@media (max-width: 640px) {
  .prod-grid, .case-grid { grid-template-columns: 1fr; }
  .process-track { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 12px; }
  .adv-grid { grid-template-columns: 1fr; }
  .intro-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .intro-stat + .intro-stat { padding-left: 14px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 34px; }
  .hero-tags { gap: 8px; }
  .hero-tag { padding: 8px 13px; font-size: 13.5px; letter-spacing: 0.08em; }
  .hero-cta .btn { flex: 1; min-width: 0; padding: 0 18px; }
  .case-tabs { gap: 8px; }
  .case-tab { padding: 8px 15px; font-size: 13.5px; }
  .drawer { padding-top: 22px; }
}

/* ================= 内页（产品中心 / 单品详情） ================= */
.page-hero {
  position: relative; background: var(--c-dark); color: var(--c-paper);
  padding: calc(var(--nav-h) + clamp(48px, 7vw, 92px)) 0 clamp(44px, 6vw, 80px);
  overflow: clip;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(52% 90% at 82% 0%, rgba(194, 160, 98, 0.14), transparent 62%),
    radial-gradient(40% 70% at 6% 100%, rgba(139, 147, 156, 0.12), transparent 60%);
  pointer-events: none;
}
.page-hero .container { position: relative; }
.crumbs {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  font-size: 13px; letter-spacing: 0.08em; color: rgba(246, 245, 241, 0.55);
}
.crumbs a { transition: color 0.3s; }
.crumbs a:hover { color: var(--c-gold-l); }
.crumbs i { font-style: normal; color: rgba(246, 245, 241, 0.3); }
.page-hero h1 {
  margin-top: 18px; font-size: clamp(30px, 4.4vw, 52px);
  font-weight: 900; letter-spacing: 0.01em; line-height: 1.15;
}
.page-hero h1 em { font-style: normal; color: var(--c-gold-l); }
.page-hero .ph-sub {
  margin-top: 14px; max-width: 40em; font-weight: 300;
  color: rgba(246, 245, 241, 0.7); font-size: clamp(14px, 1.4vw, 16.5px);
}

/* 产品中心列表 */
.plist { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.plist-card {
  position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  background: #fbfaf8; border: 1px solid var(--c-line); border-radius: 6px;
  overflow: hidden; box-shadow: var(--shadow-s);
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease);
}
.plist-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-l); }
.plist-media { position: relative; overflow: hidden; min-height: 260px; }
.plist-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease); }
.plist-card:hover .plist-media img { transform: scale(1.05); }
.plist-body { padding: clamp(22px, 2.6vw, 36px); display: flex; flex-direction: column; }
.plist-num { font-family: var(--f-num); font-size: 12px; letter-spacing: 0.24em; color: var(--c-gold-d); }
.plist-body h3 { margin-top: 8px; font-size: 22px; font-weight: 900; letter-spacing: 0.04em; }
.plist-body .pl-tag { margin-top: 6px; font-size: 13px; color: var(--c-gold-d); letter-spacing: 0.1em; }
.plist-body p { margin-top: 12px; font-size: 14px; color: var(--c-ink-3); font-weight: 300; flex: 1; }
.plist-points { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.plist-points li {
  padding: 5px 12px; font-size: 12.5px; letter-spacing: 0.06em;
  border: 1px solid var(--c-line); border-radius: 2px; color: var(--c-ink-2);
}
.plist-link { margin-top: 18px; display: inline-flex; align-items: center; gap: 7px; font-size: 14.5px; color: var(--c-gold-d); letter-spacing: 0.06em; align-self: flex-start; }
.plist-link .arr { transition: transform 0.3s var(--ease); }
.plist-link:hover .arr { transform: translateX(5px); }

/* 选型指引带 */
.guide-band {
  margin-top: clamp(44px, 6vw, 72px);
  background: var(--c-dark); color: var(--c-paper); border-radius: 8px;
  padding: clamp(28px, 4vw, 48px) clamp(24px, 4vw, 56px);
  display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 56px); align-items: center;
}
.guide-band h3 { font-size: clamp(20px, 2.4vw, 28px); font-weight: 900; letter-spacing: 0.02em; }
.guide-band p { margin-top: 12px; color: rgba(246, 245, 241, 0.68); font-weight: 300; font-size: 15px; }
.guide-band .btn { justify-self: end; }

/* 单品详情 */
.pd-hero { background: var(--c-paper); }
.pd-hero-grid {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: clamp(30px, 4.5vw, 64px); align-items: center;
}
.pd-media { position: relative; border-radius: 6px; overflow: hidden; box-shadow: var(--shadow-l); aspect-ratio: 4 / 3; }
.pd-media img { width: 100%; height: 100%; object-fit: cover; }
.pd-media .pd-badge {
  position: absolute; top: 16px; left: 16px;
  background: rgba(26, 30, 35, 0.72); backdrop-filter: blur(6px); color: var(--c-gold-l);
  font-size: 12.5px; letter-spacing: 0.22em; padding: 7px 14px; border-radius: 2px;
}
.pd-info h2 { font-size: clamp(26px, 3vw, 38px); font-weight: 900; letter-spacing: 0.02em; margin-top: 14px; }
.pd-info .pd-tagline { margin-top: 10px; color: var(--c-gold-d); font-size: 16px; letter-spacing: 0.12em; font-weight: 500; }
.pd-info .pd-intro { margin-top: 18px; color: var(--c-ink-2); font-weight: 300; }
.pd-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.pd-meta { margin-top: 26px; border-top: 1px solid var(--c-line); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.pd-meta div { padding: 16px 6px 0; }
.pd-meta div + div { border-left: 1px solid var(--c-line); padding-left: 20px; }
.pd-meta b { display: block; font-size: 14.5px; letter-spacing: 0.04em; }
.pd-meta span { font-size: 12.5px; color: var(--c-ink-3); }

.pd-section { padding: clamp(52px, 6vw, 88px) 0; }
.pd-section--cool { background: var(--c-cool); }
.pd-adv-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.pd-adv {
  background: #fbfaf8; border: 1px solid var(--c-line); border-radius: 6px;
  padding: 26px 22px; box-shadow: var(--shadow-s);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.pd-adv:hover { transform: translateY(-5px); box-shadow: var(--shadow-m); }
.pd-adv i {
  display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(150deg, #39404a, var(--c-dark)); color: var(--c-gold-l);
  font-family: var(--f-num); font-style: normal; font-weight: 700; font-size: 15px;
}
.pd-adv h3 { margin-top: 16px; font-size: 16.5px; font-weight: 700; letter-spacing: 0.05em; }
.pd-adv p { margin-top: 8px; font-size: 13.5px; color: var(--c-ink-3); font-weight: 300; }

.pd-scenes { display: flex; flex-wrap: wrap; gap: 14px; }
.pd-scene {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 24px; border-radius: 4px;
  background: #fbfaf8; border: 1px solid var(--c-line);
  font-size: 15px; letter-spacing: 0.08em; font-weight: 500;
  transition: border-color 0.3s, background 0.3s, transform 0.3s var(--ease);
}
.pd-scene:hover { border-color: var(--c-gold); background: #fdfcf9; transform: translateY(-3px); }
.pd-scene svg { width: 17px; height: 17px; color: var(--c-gold-d); flex: none; }

.pd-craft-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 4vw, 56px); align-items: center; }
.pd-craft-media { border-radius: 6px; overflow: hidden; box-shadow: var(--shadow-m); aspect-ratio: 4 / 3; }
.pd-craft-media img { width: 100%; height: 100%; object-fit: cover; }
.pd-craft-list { display: grid; gap: 16px; margin-top: 24px; }
.pd-craft-list li { display: flex; gap: 14px; align-items: flex-start; padding-bottom: 16px; border-bottom: 1px solid var(--c-line); }
.pd-craft-list li:last-child { border-bottom: none; }
.pd-craft-list i {
  flex: none; width: 30px; height: 30px; border-radius: 50%;
  display: grid; place-items: center; font-style: normal;
  border: 1px solid var(--c-gold); color: var(--c-gold-d);
  font-family: var(--f-num); font-size: 12.5px; font-weight: 700;
}
.pd-craft-list b { display: block; font-size: 15.5px; letter-spacing: 0.04em; }
.pd-craft-list span { font-size: 13.5px; color: var(--c-ink-3); font-weight: 300; }

.pd-cases-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.pd-cases-grid .case-card { cursor: zoom-in; }

/* 上下篇 */
.pd-nav { border-top: 1px solid var(--c-line); background: var(--c-paper); }
.pd-nav-inner { display: grid; grid-template-columns: 1fr auto 1fr; gap: 18px; align-items: center; padding: 26px 0; }
.pd-nav a { display: flex; flex-direction: column; gap: 4px; font-size: 14.5px; color: var(--c-ink-2); transition: color 0.3s; min-width: 0; }
.pd-nav a small { font-size: 11.5px; letter-spacing: 0.2em; color: var(--c-silver); }
.pd-nav a:hover { color: var(--c-gold-d); }
.pd-nav a.next { text-align: right; align-items: flex-end; }
.pd-nav a span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }
.pd-nav .mid { font-size: 12.5px; letter-spacing: 0.16em; color: var(--c-silver); white-space: nowrap; }

@media (max-width: 1200px) {
  .pd-adv-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 960px) {
  .plist { grid-template-columns: 1fr; }
  .plist-card { grid-template-columns: 1fr; }
  .plist-media { aspect-ratio: 16 / 10; min-height: 0; }
  .guide-band { grid-template-columns: 1fr; }
  .guide-band .btn { justify-self: start; }
  .pd-hero-grid, .pd-craft-grid { grid-template-columns: 1fr; }
  .pd-meta div + div { padding-left: 14px; }
  .pd-nav-inner { grid-template-columns: 1fr; gap: 12px; }
  .pd-nav .mid { display: none; }
  .pd-nav a.next { text-align: left; align-items: flex-start; }
}
@media (max-width: 640px) {
  .pd-adv-grid, .pd-cases-grid { grid-template-columns: 1fr; }
  .pd-meta { grid-template-columns: 1fr; gap: 12px; }
  .pd-meta div + div { border-left: none; padding-left: 6px; border-top: 1px solid var(--c-line); padding-top: 12px; }
}

/* ================= 阶段三：案例 / 实力 / 新闻内页 ================= */
/* 数据带 */
.stat-band { background: var(--c-dark); color: var(--c-paper); }
.stat-band-inner {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: clamp(30px, 4vw, 52px) 0;
}
.stat-band-inner > div { text-align: center; padding: 6px 12px; }
.stat-band-inner > div + div { border-left: 1px solid rgba(246, 245, 241, 0.1); }
.stat-band b {
  display: block; font-family: var(--f-num); font-size: clamp(22px, 2.6vw, 34px);
  font-weight: 700; letter-spacing: 0.02em; color: var(--c-gold-l);
}
.stat-band span { display: block; margin-top: 6px; font-size: 13px; letter-spacing: 0.14em; color: rgba(246, 245, 241, 0.6); }

/* 案例详情卡 */
.case2-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.case2-card {
  background: #fbfaf8; border: 1px solid var(--c-line); border-radius: 6px;
  overflow: hidden; box-shadow: var(--shadow-s); display: flex; flex-direction: column;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease);
}
.case2-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-l); }
.case2-media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; cursor: zoom-in; }
.case2-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease); }
.case2-card:hover .case2-media img { transform: scale(1.05); }
.case2-tag {
  position: absolute; top: 14px; left: 14px;
  background: rgba(26, 30, 35, 0.72); backdrop-filter: blur(6px); color: var(--c-gold-l);
  font-size: 12px; letter-spacing: 0.2em; padding: 6px 13px; border-radius: 2px;
}
.case2-body { padding: 24px 26px 26px; display: flex; flex-direction: column; flex: 1; }
.case2-body h3 { font-size: 19px; font-weight: 700; letter-spacing: 0.04em; }
.case2-meta { margin-top: 16px; display: grid; gap: 10px; flex: 1; }
.case2-meta li { display: flex; gap: 12px; font-size: 14px; padding-bottom: 10px; border-bottom: 1px dashed var(--c-line); }
.case2-meta li:last-child { border-bottom: none; }
.case2-meta b { flex: none; font-size: 12.5px; letter-spacing: 0.14em; color: var(--c-gold-d); padding-top: 2px; }
.case2-meta span { color: var(--c-ink-2); font-weight: 300; }
.case2-foot { margin-top: 16px; display: flex; justify-content: space-between; align-items: center; }
.case2-foot small { font-size: 12.5px; color: var(--c-silver); letter-spacing: 0.1em; }
.case2-foot button { font-size: 14px; color: var(--c-gold-d); letter-spacing: 0.06em; display: inline-flex; gap: 6px; align-items: center; }
.case2-foot button .arr { transition: transform 0.3s var(--ease); }
.case2-foot button:hover .arr { transform: translateX(5px); }

/* 品牌实力 */
.ab-split { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(30px, 4.5vw, 64px); align-items: center; }
.ab-split + .ab-split { margin-top: clamp(48px, 6vw, 84px); }
.ab-copy p { margin-top: 16px; color: var(--c-ink-2); font-weight: 300; }
.ab-list { margin-top: 24px; display: grid; gap: 13px; }
.ab-list li { display: flex; gap: 13px; align-items: flex-start; }
.ab-list i {
  flex: none; width: 28px; height: 28px; margin-top: 2px; border-radius: 50%;
  display: grid; place-items: center; font-style: normal;
  border: 1px solid var(--c-gold); color: var(--c-gold-d);
  font-family: var(--f-num); font-size: 12px; font-weight: 700;
}
.ab-list b { display: block; font-size: 15.5px; letter-spacing: 0.04em; }
.ab-list span { font-size: 13.5px; color: var(--c-ink-3); font-weight: 300; }
.ab-media { border-radius: 6px; overflow: hidden; box-shadow: var(--shadow-l); aspect-ratio: 4 / 3; }
.ab-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.ab-media:hover img { transform: scale(1.04); }
.ab-media--tall { aspect-ratio: 4 / 4.4; }

/* 资质证书 */
.cert-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.cert-card {
  border: 1px dashed rgba(34, 38, 43, 0.22); border-radius: 6px;
  padding: 26px 18px; text-align: center; background: rgba(251, 250, 248, 0.6);
  transition: border-color 0.3s, background 0.3s, transform 0.3s var(--ease);
}
.cert-card:hover { border-color: var(--c-gold); background: #fbfaf8; transform: translateY(-4px); }
.cert-card svg { width: 30px; height: 30px; color: var(--c-gold-d); margin-inline: auto; }
.cert-card b { display: block; margin-top: 12px; font-size: 14.5px; letter-spacing: 0.05em; }
.cert-card span { display: block; margin-top: 5px; font-size: 12px; color: var(--c-silver); }

/* 合作客户 */
.client-strip { display: flex; flex-wrap: wrap; gap: 14px; }
.client-strip li {
  padding: 14px 26px; border: 1px solid var(--c-line); border-radius: 4px;
  background: #fbfaf8; font-size: 15px; letter-spacing: 0.12em; color: var(--c-ink-2);
  transition: border-color 0.3s, color 0.3s, transform 0.3s var(--ease);
}
.client-strip li:hover { border-color: var(--c-gold); color: var(--c-gold-d); transform: translateY(-3px); }
.placeholder-note { margin-top: 18px; font-size: 12px; color: var(--c-silver); }

/* 新闻列表 */
.news-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.news-card {
  display: flex; flex-direction: column; background: #fbfaf8;
  border: 1px solid var(--c-line); border-radius: 6px; overflow: hidden;
  box-shadow: var(--shadow-s); transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease);
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-m); }
.news-card-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.news-tag {
  align-self: flex-start; font-size: 11.5px; letter-spacing: 0.2em; color: var(--c-gold-d);
  border: 1px solid rgba(166, 133, 74, 0.4); padding: 4px 11px; border-radius: 2px;
}
.news-card h3 { margin-top: 13px; font-size: 17px; font-weight: 700; letter-spacing: 0.03em; line-height: 1.5; }
.news-card h3 a { transition: color 0.3s; }
.news-card h3 a:hover { color: var(--c-gold-d); }
.news-card p { margin-top: 10px; font-size: 13.5px; color: var(--c-ink-3); font-weight: 300; flex: 1; }
.news-date { margin-top: 16px; font-size: 12.5px; color: var(--c-silver); font-family: var(--f-num); letter-spacing: 0.08em; }

/* 文章详情 */
.article { max-width: 780px; margin-inline: auto; }
.article-head { text-align: center; }
.article-head h1 { margin-top: 16px; font-size: clamp(24px, 3.4vw, 38px); font-weight: 900; letter-spacing: 0.01em; line-height: 1.35; }
.article-meta { margin-top: 14px; font-size: 13px; color: var(--c-silver); letter-spacing: 0.1em; }
.article-body { margin-top: clamp(30px, 4vw, 48px); }
.article-body p { margin-top: 18px; color: var(--c-ink-2); font-weight: 300; line-height: 1.95; }
.article-body h2 { margin-top: 34px; font-size: 20px; font-weight: 700; letter-spacing: 0.04em; padding-left: 16px; position: relative; }
.article-body h2::before { content: ""; position: absolute; left: 0; top: 0.18em; bottom: 0.18em; width: 3px; background: var(--c-gold); border-radius: 2px; }
.article-body figure { margin-top: 26px; border-radius: 6px; overflow: hidden; box-shadow: var(--shadow-m); }
.article-body figure img { width: 100%; }
.article-body figcaption { padding: 10px 14px; font-size: 12.5px; color: var(--c-ink-3); background: #fbfaf8; letter-spacing: 0.08em; }
.article-back { margin-top: 40px; text-align: center; }

@media (max-width: 1200px) {
  .cert-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .news-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 960px) {
  .stat-band-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 26px; }
  .stat-band-inner > div:nth-child(3) { border-left: none; }
  .case2-grid, .ab-split { grid-template-columns: 1fr; }
  .ab-media--tall { aspect-ratio: 4 / 3; }
}
@media (max-width: 640px) {
  .case2-grid, .news-grid, .cert-grid { grid-template-columns: 1fr; }
  .stat-band-inner { grid-template-columns: 1fr 1fr; }
}

.news-card.hide { display: none; }

/* ================= 企业 LOGO ================= */
.brand-mark img { width: 26px; height: 26px; object-fit: contain; }
.brand-chip {
  display: inline-flex; align-items: center;
  background: #fcfcfb; border-radius: 8px; padding: 9px 14px;
  box-shadow: var(--shadow-s);
}
.brand-chip img { height: 54px; width: auto; display: block; }
@media (max-width: 960px) {
  .brand-chip { padding: 7px 11px; }
  .brand-chip img { height: 42px; }
}

/* ================= 语言切换 ================= */
.lang-switch {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 42px; min-height: 34px; padding: 0 11px;
  border: 1px solid rgba(246, 245, 241, 0.4); border-radius: 4px;
  font-size: 13px; letter-spacing: 0.12em; color: var(--c-paper);
  transition: border-color 0.3s, color 0.3s;
  white-space: nowrap;
}
.lang-switch:hover { border-color: var(--c-gold); color: var(--c-gold-l); }
.nav.is-solid .lang-switch, .nav.drawer-open .lang-switch { border-color: var(--c-line); color: var(--c-ink-2); }
.nav.is-solid .lang-switch:hover, .nav.drawer-open .lang-switch:hover { border-color: var(--c-gold); color: var(--c-gold-d); }
.drawer a.lang-switch { border-bottom: 1px solid var(--c-line); }

/* ================= 实拍视频 ================= */
.vd-wrap { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 22px; align-items: stretch; }
.vd-player {
  position: relative; border-radius: 8px; overflow: hidden; background: #101317;
  box-shadow: var(--shadow-l); min-height: 300px; display: flex;
}
.vd-player video { width: 100%; height: 100%; object-fit: contain; display: block; }
.vd-rail { display: grid; grid-template-columns: 1fr; gap: 12px; }
.vd-thumb {
  position: relative; display: grid; grid-template-columns: 96px 1fr; align-items: center; gap: 12px;
  text-align: left; background: #fbfaf8; border: 1px solid var(--c-line); border-radius: 6px;
  padding: 8px; overflow: hidden;
  transition: border-color 0.3s, background 0.3s, transform 0.3s var(--ease);
}
.vd-thumb:hover { border-color: var(--c-gold); transform: translateY(-2px); }
.vd-thumb.is-active { border-color: var(--c-gold); background: #fdfcf7; box-shadow: var(--shadow-s); }
.vd-thumb img { width: 96px; height: 60px; object-fit: cover; border-radius: 4px; display: block; }
.vd-thumb span { font-size: 13.5px; letter-spacing: 0.04em; color: var(--c-ink-2); padding-right: 8px; line-height: 1.45; }
.vd-thumb.is-active span { color: var(--c-gold-d); font-weight: 600; }
.vd-thumb::after {
  content: ""; position: absolute; left: 12px; top: 26px; width: 0; height: 0;
  border-left: 12px solid rgba(246, 245, 241, 0.92); border-top: 7px solid transparent; border-bottom: 7px solid transparent;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.4)); pointer-events: none;
}
.vd-flag-link { display: inline-flex; align-items: center; gap: 7px; margin-top: 14px; font-size: 14px; color: var(--c-gold-d); letter-spacing: 0.06em; }
.vd-flag-link svg { width: 16px; height: 16px; }
.vd-flag-link .arr { transition: transform 0.3s var(--ease); }
.vd-flag-link:hover .arr { transform: translateX(5px); }
@media (max-width: 960px) {
  .vd-wrap { grid-template-columns: 1fr; }
  .vd-rail { grid-template-columns: 1fr 1fr; }
  .vd-player { aspect-ratio: 16 / 9; min-height: 0; }
}
@media (max-width: 640px) {
  .vd-rail { grid-template-columns: 1fr; }
}

/* ================= 移动端体检优化 ================= */
/* 指示条加大点击热区（视觉仍是 3px 细条） */
.hero-dot { padding: 10px 0; background-clip: content-box; }
/* 老内核不支持 svh 时回退 vh */
section.hero { min-height: 100vh; min-height: max(640px, 100svh); }
@media (max-width: 960px) {
  section.hero { min-height: 92vh; min-height: max(560px, 92svh); }
  /* 提示条移到底部咨询条上方，避免遮挡 */
  .toast { bottom: calc(84px + env(safe-area-inset-bottom, 0px)); }
}
@media (max-width: 640px) {
  /* iOS Safari 聚焦不缩放 */
  input, select, textarea { font-size: 16px; }
}

/* ================= 真实资质证书 ================= */
.cert-fig {
  position: relative; margin: 0; border: 1px solid var(--c-line); border-radius: 6px;
  overflow: hidden; background: #fcfcfb; box-shadow: var(--shadow-s); cursor: zoom-in;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.cert-fig:hover { transform: translateY(-4px); box-shadow: var(--shadow-m); }
.cert-fig img { width: 100%; aspect-ratio: 1000 / 1418; object-fit: cover; display: block; }
.cert-fig figcaption {
  padding: 10px 12px; font-size: 13px; letter-spacing: 0.08em; text-align: center;
  color: var(--c-ink-2); background: #fbfaf8; border-top: 1px solid var(--c-line);
}
@media (max-width: 640px) {
  .cert-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
}

/* ================= FAQ ================= */
.faq-list { max-width: 860px; margin-inline: auto; }
.faq-item { border: 1px solid var(--c-line); border-radius: 6px; background: #fbfaf8; margin-bottom: 12px; overflow: hidden; }
.faq-item summary {
  padding: 16px 20px; cursor: pointer; font-weight: 600; font-size: 15.5px; letter-spacing: 0.03em;
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 20px; color: var(--c-gold-d); transition: transform 0.3s var(--ease); flex: none; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 20px 18px; color: var(--c-ink-2); font-weight: 300; font-size: 14.5px; line-height: 1.9; }
.faq-item[open] { box-shadow: var(--shadow-s); }