/* =========================================================
   车饰界汽车装饰 · 新淮海西路二店  |  style.css
   ========================================================= */

/* ---------- 设计变量 ---------- */
:root {
  --c-bg:        #0b0d12;
  --c-bg-2:      #12151d;
  --c-bg-3:      #1a1e29;
  --c-line:      rgba(255, 255, 255, 0.08);
  --c-text:      #e8ecf3;
  --c-muted:     #99a2b3;
  --c-brand:     #f5a524;
  --c-brand-2:   #ffcc66;
  --c-danger:    #ef4444;
  --c-ok:        #22c55e;

  --grad-brand:  linear-gradient(135deg, #f5a524 0%, #ff7a1a 100%);
  --grad-hero:   radial-gradient(1200px 600px at 20% 0%, rgba(245,165,36,.18), transparent 60%),
                 radial-gradient(900px 500px at 100% 30%, rgba(255,122,26,.14), transparent 60%);

  --shadow-sm:   0 2px 8px rgba(0,0,0,.25);
  --shadow-md:   0 12px 32px rgba(0,0,0,.35);
  --shadow-lg:   0 24px 60px rgba(0,0,0,.45);
  --shadow-brand:0 12px 30px rgba(245,165,36,.28);

  --radius-sm:   8px;
  --radius:      14px;
  --radius-lg:   22px;

  --container:   1200px;
  --header-h:    72px;

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

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
               "Hiragino Sans GB", "Source Han Sans CN", sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s var(--ease); }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.25; letter-spacing: .5px; }
p  { margin: 0; }

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .5px;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease),
              background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
  white-space: nowrap;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-lg { padding: 15px 30px; font-size: 16px; }
.btn-primary {
  background: var(--grad-brand);
  color: #1a1206;
  box-shadow: var(--shadow-brand);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 38px rgba(245,165,36,.42); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost {
  border-color: rgba(255,255,255,.18);
  color: var(--c-text);
  background: rgba(255,255,255,.03);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover { border-color: var(--c-brand); color: var(--c-brand); background: rgba(245,165,36,.08); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 100;
  background: rgba(11,13,18,.55);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: background .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header.is-scrolled {
  background: rgba(11,13,18,.92);
  border-bottom-color: var(--c-line);
  box-shadow: var(--shadow-sm);
}
.nav-wrap {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-mark {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: var(--grad-brand);
  color: #1a1206;
  font-weight: 900;
  font-size: 15px;
  letter-spacing: .5px;
  display: grid;
  place-items: center;
  box-shadow: 0 6px 18px rgba(245,165,36,.35);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text b { font-size: 18px; letter-spacing: 1px; }
.brand-text i {
  font-style: normal;
  font-size: 12px;
  color: var(--c-muted);
  margin-top: 3px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-link {
  position: relative;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--c-muted);
  border-radius: 8px;
  transition: color .25s var(--ease), background .25s var(--ease);
}
.nav-link:hover { color: var(--c-text); background: rgba(255,255,255,.04); }
.nav-link.active { color: var(--c-brand); }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 2px;
  transform: translateX(-50%);
  width: 20px; height: 2px;
  background: var(--grad-brand);
  border-radius: 2px;
}

.nav-cta {
  padding: 10px 18px;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--c-line);
}
.nav-toggle span {
  display: block;
  width: 20px; height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .2s var(--ease);
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  padding: calc(var(--header-h) + 60px) 0 80px;
  overflow: hidden;
  isolation: isolate;
}
.hero-bg {
  position: absolute; inset: 0;
  background: var(--grad-hero), var(--c-bg);
  z-index: -2;
}
.hero-bg::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 30%, transparent 75%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
  min-height: calc(100vh - var(--header-h) - 140px);
}

.eyebrow {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(245,165,36,.35);
  background: rgba(245,165,36,.08);
  color: var(--c-brand);
  font-size: 13px;
  letter-spacing: 2px;
  margin-bottom: 22px;
}

.hero-copy h1 {
  font-size: clamp(38px, 5.4vw, 68px);
  line-height: 1.1;
  letter-spacing: 2px;
  margin-bottom: 20px;
}
.grad-text {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-copy .lead {
  font-size: clamp(15px, 1.15vw, 17px);
  color: var(--c-muted);
  max-width: 560px;
  margin-bottom: 34px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 46px;
}
.hero-stats {
  display: flex;
  gap: 44px;
  padding-top: 30px;
  border-top: 1px solid var(--c-line);
}
.hero-stats li { display: flex; flex-direction: column; gap: 4px; }
.hero-stats b {
  font-size: 32px;
  color: var(--c-brand);
  font-weight: 800;
  line-height: 1;
}
.hero-stats b span { font-size: 18px; margin-left: 2px; }
.hero-stats span { font-size: 13px; color: var(--c-muted); letter-spacing: 1px; }

.hero-media { position: relative; }
.media-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,.08);
  transform: perspective(1400px) rotateY(-6deg) rotateX(2deg);
  transition: transform .6s var(--ease);
  aspect-ratio: 4 / 3;
  background: #111;
}
.media-frame:hover { transform: perspective(1400px) rotateY(-2deg) rotateX(0deg); }
.media-frame img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.media-frame::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(0,0,0,.55) 100%);
  pointer-events: none;
}
.media-badge {
  position: absolute;
  left: 20px; bottom: 20px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(11,13,18,.75);
  backdrop-filter: blur(10px);
  color: var(--c-text);
  font-size: 13px;
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(255,255,255,.1);
  z-index: 2;
}
.media-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--c-ok);
  box-shadow: 0 0 0 4px rgba(34,197,94,.2);
  animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.2); opacity: .7; }
}

.hero-scroll {
  position: absolute;
  bottom: 26px; left: 50%;
  transform: translateX(-50%);
  width: 24px; height: 40px;
  border: 2px solid rgba(255,255,255,.25);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}
.hero-scroll span {
  width: 3px; height: 8px;
  background: var(--c-brand);
  border-radius: 3px;
  animation: scrollDown 1.8s infinite;
}
@keyframes scrollDown {
  0%   { transform: translateY(0);    opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* ---------- Section 通用 ---------- */
.section {
  padding: 100px 0;
  position: relative;
}
.section-alt { background: var(--c-bg-2); }
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}
.section-head .tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--c-brand);
  padding: 4px 12px;
  border-radius: 4px;
  background: rgba(245,165,36,.1);
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(28px, 3.4vw, 42px);
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.section-head p {
  color: var(--c-muted);
  font-size: 15px;
}

/* ---------- 服务卡片 ---------- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.service-card {
  position: relative;
  padding: 32px 26px;
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  transition: transform .35s var(--ease), border-color .35s var(--ease), box-shadow .35s var(--ease), background .35s var(--ease);
  overflow: hidden;
}
.service-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: var(--grad-brand);
  opacity: 0;
  transition: opacity .35s var(--ease);
  z-index: -1;
  filter: blur(20px);
}
.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(245,165,36,.4);
  box-shadow: 0 20px 40px rgba(0,0,0,.4);
  background: linear-gradient(180deg, rgba(245,165,36,.06), rgba(255,255,255,.02));
}
.service-card:hover::before { opacity: .25; }
.service-card h3 {
  font-size: 19px;
  margin: 18px 0 10px;
  letter-spacing: 1px;
}
.service-card p {
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.7;
}
.s-icon {
  width: 54px; height: 54px;
  border-radius: 14px;
  background: rgba(245,165,36,.12);
  color: var(--c-brand);
  display: grid;
  place-items: center;
  transition: transform .35s var(--ease), background .35s var(--ease);
}
.s-icon svg { width: 26px; height: 26px; }
.service-card:hover .s-icon {
  background: var(--grad-brand);
  color: #1a1206;
  transform: rotate(-6deg) scale(1.05);
}
.s-tag {
  position: absolute;
  top: 16px; right: 16px;
  font-size: 11px;
  letter-spacing: 1.5px;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--c-danger);
  color: #fff;
  font-weight: 700;
}

.service-card--cta {
  background: var(--grad-brand);
  color: #1a1206;
  display: flex;
  align-items: center;
  border-color: transparent;
}
.service-card--cta::before { display: none; }
.service-card--cta:hover {
  background: var(--grad-brand);
  transform: translateY(-6px);
  border-color: transparent;
  box-shadow: var(--shadow-brand);
}
.service-card--cta h3 { color: #1a1206; margin-top: 0; }
.service-card--cta p  { color: rgba(26,18,6,.75); }
.service-card--cta .btn {
  background: #1a1206;
  color: var(--c-brand);
  margin-top: 18px;
  box-shadow: none;
}
.service-card--cta .btn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,.28); }

/* ---------- 品牌优势 ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.why-item {
  padding: 34px 28px;
  background: rgba(255,255,255,.02);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  position: relative;
  transition: transform .35s var(--ease), border-color .35s var(--ease), background .35s var(--ease);
}
.why-item:hover {
  transform: translateY(-4px);
  border-color: rgba(245,165,36,.35);
  background: rgba(245,165,36,.04);
}
.why-num {
  font-size: 42px;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(245,165,36,.55);
  line-height: 1;
  margin-bottom: 12px;
  letter-spacing: 2px;
}
.why-item h3 { font-size: 18px; margin-bottom: 8px; letter-spacing: 1px; }
.why-item p  { color: var(--c-muted); font-size: 14px; line-height: 1.7; }

/* ---------- 门店展示 Gallery ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 200px;
  gap: 16px;
}
.g-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  margin: 0;
  border: 1px solid var(--c-line);
  background: var(--c-bg-3);
  cursor: pointer;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.g-item:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-md);
  z-index: 2;
}
.g-big { grid-column: span 2; grid-row: span 2; }
.g-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .8s var(--ease);
}
.g-item:hover img { transform: scale(1.06); }
.g-item figcaption {
  position: absolute;
  left: 16px; bottom: 16px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(11,13,18,.72);
  backdrop-filter: blur(8px);
  font-size: 13px;
  letter-spacing: 1px;
  border: 1px solid rgba(255,255,255,.1);
}
.g-ph {
  width: 100%; height: 100%;
  display: grid;
  place-items: center;
  color: rgba(255,255,255,.85);
  font-size: 15px;
  letter-spacing: 2px;
  position: relative;
  overflow: hidden;
}
.g-ph::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,.15), rgba(0,0,0,.45));
}
.g-ph span { position: relative; z-index: 1; text-shadow: 0 2px 8px rgba(0,0,0,.6); }
.g-ph-1 { background: linear-gradient(135deg, #2b3a55, #0f1524); }
.g-ph-2 { background: linear-gradient(135deg, #7a2b2b, #2b0f14); }
.g-ph-3 { background: linear-gradient(135deg, #2b6d7a, #0f2226); }
.g-ph-4 { background: linear-gradient(135deg, #4d3d7a, #1a1226); }
.g-ph-5 { background: linear-gradient(135deg, #6d5a2b, #26200f); }
.g-ph-6 { background: linear-gradient(135deg, #2b7a4d, #0f2618); }
.g-ph-7 { background: linear-gradient(135deg, #7a4a2b, #26180f); }

/* ---------- 关于我们 ---------- */
.about-wrap {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 60px;
  align-items: center;
}
.about-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--c-line);
  aspect-ratio: 4 / 3;
}
.about-media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(245,165,36,.15), transparent 60%);
  pointer-events: none;
}
.about-media img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.about-copy .tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--c-brand);
  padding: 4px 12px;
  border-radius: 4px;
  background: rgba(245,165,36,.1);
  margin-bottom: 14px;
}
.about-copy h2 {
  font-size: clamp(26px, 3vw, 38px);
  margin-bottom: 18px;
  letter-spacing: 2px;
}
.about-copy p {
  color: var(--c-muted);
  margin-bottom: 14px;
  font-size: 15px;
  line-height: 1.85;
}
.about-copy p b { color: var(--c-text); }
.about-list { margin: 22px 0 28px; display: grid; gap: 10px; }
.about-list li {
  color: var(--c-text);
  font-size: 14.5px;
  letter-spacing: .5px;
}
.about-list li::first-letter { color: var(--c-brand); }

/* ---------- 联系我们 ---------- */
.contact {
  background:
    radial-gradient(800px 400px at 15% 0%, rgba(245,165,36,.12), transparent 60%),
    radial-gradient(600px 400px at 90% 100%, rgba(255,122,26,.10), transparent 60%),
    var(--c-bg);
}
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}
.contact-card {
  padding: 30px 24px;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  text-align: center;
  transition: transform .35s var(--ease), border-color .35s var(--ease), background .35s var(--ease);
}
.contact-card:hover {
  transform: translateY(-4px);
  border-color: rgba(245,165,36,.4);
  background: rgba(245,165,36,.05);
}
.c-icon {
  width: 56px; height: 56px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: rgba(245,165,36,.14);
  color: var(--c-brand);
  display: grid; place-items: center;
  transition: transform .35s var(--ease), background .35s var(--ease);
}
.c-icon svg { width: 26px; height: 26px; }
.contact-card:hover .c-icon {
  background: var(--grad-brand);
  color: #1a1206;
  transform: scale(1.06);
}
.contact-card h3 {
  font-size: 14px;
  color: var(--c-muted);
  font-weight: 500;
  letter-spacing: 2px;
  margin-bottom: 8px;
}
.c-value {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: var(--c-brand);
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.contact-card p {
  font-size: 13px;
  color: var(--c-muted);
}

.cta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 40px;
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, rgba(245,165,36,.14), rgba(255,122,26,.08));
  border: 1px solid rgba(245,165,36,.28);
  flex-wrap: wrap;
}
.cta-bar h3 { font-size: 22px; margin-bottom: 6px; letter-spacing: 1px; }
.cta-bar p  { color: var(--c-muted); font-size: 14px; }

.cta-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* 联系卡片内的复制按钮 */
.btn-copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 2px auto 8px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(245,165,36,.4);
  background: rgba(245,165,36,.1);
  color: var(--c-brand);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 1px;
  transition: background .25s var(--ease), color .25s var(--ease), transform .25s var(--ease), border-color .25s var(--ease);
}
.btn-copy:hover {
  background: var(--grad-brand);
  color: #1a1206;
  border-color: transparent;
  transform: translateY(-1px);
}
.btn-copy svg { flex-shrink: 0; }

/* ---------- 页脚 ---------- */
.site-footer {
  background: #07090d;
  border-top: 1px solid var(--c-line);
  padding-top: 60px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.brand--footer { margin-bottom: 16px; }
.f-col p { color: var(--c-muted); font-size: 14px; line-height: 1.8; }
.f-col h4 {
  font-size: 15px;
  letter-spacing: 2px;
  margin-bottom: 18px;
  color: var(--c-text);
  position: relative;
  padding-bottom: 10px;
}
.f-col h4::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 26px; height: 2px;
  background: var(--grad-brand);
  border-radius: 2px;
}
.f-col ul li { margin-bottom: 10px; }
.f-col ul a {
  color: var(--c-muted);
  font-size: 14px;
  transition: color .25s var(--ease), padding-left .25s var(--ease);
}
.f-col ul a:hover { color: var(--c-brand); padding-left: 4px; }
.f-contact li {
  color: var(--c-muted);
  font-size: 14px;
  display: flex;
  gap: 4px;
}
.f-contact li span { color: #6f7787; min-width: 62px; }
.f-contact li a:hover { color: var(--c-brand); }

/* 页脚电话行内联复制小按钮 */
.f-copy {
  display: inline-grid;
  place-items: center;
  width: 22px; height: 22px;
  margin-left: 6px;
  vertical-align: middle;
  border-radius: 6px;
  border: 1px solid var(--c-line);
  background: rgba(255,255,255,.04);
  color: var(--c-muted);
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.f-copy:hover {
  background: var(--grad-brand);
  color: #1a1206;
  border-color: transparent;
}

.footer-bottom {
  border-top: 1px solid var(--c-line);
  padding: 20px 0;
  text-align: center;
}
.footer-bottom p {
  color: #6f7787;
  font-size: 13px;
  letter-spacing: 1px;
}

/* ---------- 悬浮组件 ---------- */
.fab-call {
  position: fixed;
  right: 20px;
  bottom: 26px;
  z-index: 90;
  display: none;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  background: var(--grad-brand);
  color: #1a1206;
  font-weight: 700;
  font-size: 15px;
  box-shadow: var(--shadow-brand);
  animation: fabPulse 2.4s ease-in-out infinite;
}
.fab-call svg { width: 18px; height: 18px; }
@keyframes fabPulse {
  0%, 100% { box-shadow: 0 12px 30px rgba(245,165,36,.35), 0 0 0 0 rgba(245,165,36,.45); }
  50%      { box-shadow: 0 12px 30px rgba(245,165,36,.35), 0 0 0 14px rgba(245,165,36,0); }
}

.back-top {
  position: fixed;
  right: 24px;
  bottom: 100px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--c-line);
  color: var(--c-text);
  display: grid; place-items: center;
  z-index: 89;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity .3s var(--ease), transform .3s var(--ease), background .25s var(--ease);
  backdrop-filter: blur(10px);
}
.back-top.is-show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-top:hover { background: var(--grad-brand); color: #1a1206; border-color: transparent; }

/* ---------- 复制成功 Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translate(-50%, 20px);
  z-index: 200;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  background: rgba(11,13,18,.92);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(245,165,36,.4);
  color: var(--c-brand);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.toast.is-show {
  opacity: 1;
  transform: translate(-50%, 0);
}
.toast svg { color: var(--c-ok); flex-shrink: 0; }

/* ---------- 滚动动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* 服务卡片错开动画 */
.service-card.reveal:nth-child(1),
.why-item.reveal:nth-child(1) { transition-delay: .05s; }
.service-card.reveal:nth-child(2),
.why-item.reveal:nth-child(2) { transition-delay: .1s; }
.service-card.reveal:nth-child(3),
.why-item.reveal:nth-child(3) { transition-delay: .15s; }
.service-card.reveal:nth-child(4),
.why-item.reveal:nth-child(4) { transition-delay: .2s; }
.service-card.reveal:nth-child(5),
.why-item.reveal:nth-child(5) { transition-delay: .25s; }
.service-card.reveal:nth-child(6),
.why-item.reveal:nth-child(6) { transition-delay: .3s; }
.service-card.reveal:nth-child(7) { transition-delay: .35s; }
.service-card.reveal:nth-child(8) { transition-delay: .4s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* =========================================================
   响应式：平板 (≤ 1024px)
   ========================================================= */
@media (max-width: 1024px) {
  :root { --header-h: 66px; }
  .container { padding: 0 20px; }

  .hero { padding: calc(var(--header-h) + 40px) 0 60px; }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    min-height: auto;
    text-align: center;
  }
  .hero-copy .lead { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; gap: 30px; }
  .media-frame { transform: none; max-width: 640px; margin: 0 auto; }
  .media-frame:hover { transform: none; }

  .section { padding: 78px 0; }
  .service-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .why-grid     { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .gallery      { grid-template-columns: repeat(3, 1fr); grid-auto-rows: 180px; }
  .g-big        { grid-column: span 3; grid-row: span 2; }

  .about-wrap { grid-template-columns: 1fr; gap: 40px; }
  .about-media { max-width: 640px; margin: 0 auto; width: 100%; }

  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-bar { padding: 28px; text-align: center; justify-content: center; }

  .footer-inner { grid-template-columns: repeat(2, 1fr); gap: 32px; }

  .main-nav { display: none; }
  .nav-toggle { display: flex; }
}

/* =========================================================
   响应式：移动端 (≤ 768px)
   ========================================================= */
@media (max-width: 768px) {
  :root { --header-h: 60px; }
  body { font-size: 15px; }
  .container { padding: 0 16px; }

  /* 顶部导航：折叠菜单 */
  .nav-cta { display: none; }
  .brand-mark { width: 38px; height: 38px; font-size: 13px; border-radius: 10px; }
  .brand-text b { font-size: 16px; }
  .brand-text i { font-size: 11px; }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 16px 22px;
    background: rgba(11,13,18,.98);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--c-line);
    box-shadow: var(--shadow-md);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform .3s var(--ease), opacity .3s var(--ease);
    display: flex !important;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  .main-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .main-nav .nav-link {
    padding: 14px 12px;
    font-size: 16px;
    border-bottom: 1px solid rgba(255,255,255,.05);
    border-radius: 0;
    color: var(--c-text);
  }
  .main-nav .nav-link.active { background: rgba(245,165,36,.08); }
  .main-nav .nav-link.active::after { display: none; }
  .main-nav .nav-link:last-child { border-bottom: none; }
  .main-nav .btn {
    margin-top: 12px;
    padding: 13px;
    justify-content: center;
  }

  /* Hero */
  .hero {
    padding: calc(var(--header-h) + 30px) 0 50px;
    min-height: auto;
  }
  .hero-copy h1 { font-size: clamp(30px, 8vw, 42px); letter-spacing: 1px; }
  .eyebrow { font-size: 11px; letter-spacing: 1.5px; padding: 5px 12px; margin-bottom: 16px; }
  .hero-copy .lead { font-size: 14.5px; margin-bottom: 26px; }
  .hero-actions { flex-direction: column; align-items: stretch; gap: 10px; margin-bottom: 32px; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { gap: 16px; padding-top: 22px; flex-wrap: wrap; justify-content: space-between; }
  .hero-stats li { flex: 1; min-width: 84px; }
  .hero-stats b { font-size: 24px; }
  .hero-stats b span { font-size: 14px; }
  .hero-stats span { font-size: 11.5px; letter-spacing: .5px; }
  .hero-scroll { display: none; }

  /* Section */
  .section { padding: 60px 0; }
  .section-head { margin-bottom: 40px; }
  .section-head h2 { font-size: clamp(24px, 6.5vw, 30px); letter-spacing: 1.5px; }
  .section-head p { font-size: 14px; }

  /* 服务卡片 */
  .service-grid { grid-template-columns: 1fr; gap: 14px; }
  .service-card { padding: 24px 20px; }
  .service-card h3 { font-size: 17px; margin: 14px 0 8px; }
  .service-card p  { font-size: 13.5px; }
  .s-icon { width: 46px; height: 46px; border-radius: 12px; }
  .s-icon svg { width: 22px; height: 22px; }

  /* 品牌优势 */
  .why-grid { grid-template-columns: 1fr; gap: 14px; }
  .why-item { padding: 24px 20px; }
  .why-num { font-size: 32px; }
  .why-item h3 { font-size: 16px; }

  /* Gallery */
  .gallery {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 140px;
    gap: 12px;
  }
  .g-big { grid-column: span 2; grid-row: span 2; }
  .g-item figcaption { font-size: 11px; padding: 4px 10px; left: 10px; bottom: 10px; }
  .g-ph { font-size: 13px; letter-spacing: 1px; }

  /* 关于我们 */
  .about-wrap { gap: 28px; }
  .about-copy h2 { font-size: clamp(22px, 6vw, 28px); }
  .about-copy p { font-size: 14px; line-height: 1.8; }
  .about-list { margin: 18px 0 22px; gap: 8px; }
  .about-list li { font-size: 13.5px; }

  /* 联系我们 */
  .contact-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 24px; }
  .contact-card { padding: 22px 14px; }
  .c-icon { width: 46px; height: 46px; }
  .c-icon svg { width: 22px; height: 22px; }
  .c-value { font-size: 18px; }
  .contact-card h3 { font-size: 12px; letter-spacing: 1.5px; }
  .contact-card p { font-size: 12px; }

  .cta-bar {
    padding: 24px 18px;
    border-radius: var(--radius);
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }
  .cta-bar h3 { font-size: 18px; }
  .cta-bar p { font-size: 13px; }
  .cta-bar .btn { width: 100%; }
  .cta-actions { flex-direction: column; align-items: stretch; width: 100%; gap: 10px; }
  .btn-copy { font-size: 12px; padding: 6px 12px; }

  /* 页脚 */
  .site-footer { padding-top: 44px; }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 28px;
  }
  .f-col h4 { margin-bottom: 14px; padding-bottom: 8px; font-size: 14px; }
  .f-col ul li { margin-bottom: 8px; }
  .footer-bottom p { font-size: 12px; letter-spacing: .5px; }

  /* 悬浮组件 */
  .fab-call { display: inline-flex; right: 16px; bottom: 20px; padding: 11px 18px; font-size: 14px; }
  .back-top { right: 16px; bottom: 78px; width: 40px; height: 40px; }
}

/* =========================================================
   超小屏 (≤ 380px)
   ========================================================= */
@media (max-width: 380px) {
  .hero-copy h1 { font-size: 28px; }
  .hero-stats { gap: 10px; }
  .hero-stats b { font-size: 20px; }
  .contact-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; grid-auto-rows: 160px; }
  .g-big { grid-column: span 1; grid-row: span 1; }
}