/* =========================================================
 * 鼎牌照明 - 组件样式
 * 头部 / 底部 / 产品卡片 / 横幅 / 浮动按钮等
 * ========================================================= */

/* ====== 顶部公告条 ====== */
.topbar {
  background: var(--brand-navy-dark);
  color: rgba(255, 255, 255, .85);
  font-size: var(--fs-12);
  padding: 0.5rem 0;
  letter-spacing: .04em;
}
.topbar .container {
  display: flex; justify-content: space-between; align-items: center; gap: var(--sp-4);
  flex-wrap: wrap;
}
.topbar a:hover { color: var(--brand-gold); }
.topbar i { font-style: normal; opacity: .6; margin: 0 .4rem; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}
.skip-link:focus {
  left: 0; top: 0;
  width: auto; height: auto;
  clip: auto;
  background: var(--brand-navy);
  color: var(--white);
  padding: .6rem 1.2rem;
  z-index: var(--z-modal);
  font-size: var(--fs-14);
}

/* ====== 头部导航 ====== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, .98);
  border-bottom: 1px solid var(--ink-200);
  padding-top: var(--sat, env(safe-area-inset-top));
}
.site-header::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: var(--sat, env(safe-area-inset-top));
  background: #fff;
  z-index: -1;
  pointer-events: none;
}
.nav {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
  color: var(--ink-900);
}
.brand__mark {
  width: 48px; height: 48px;
  border-radius: var(--radius);
  background: var(--white);
  display: grid; place-items: center;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.brand__mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 3px;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name {
  font-family: var(--font-serif);
  font-size: var(--fs-20);
  font-weight: var(--fw-bold);
  color: var(--ink-900);
  letter-spacing: .04em;
}
.brand__sub {
  font-size: 0.7rem;
  letter-spacing: .25em;
  color: var(--ink-500);
  text-transform: uppercase;
  margin-top: 2px;
}

.nav__menu {
  display: flex;
  gap: var(--sp-1);
  align-items: center;
}
.nav__link {
  position: relative;
  padding: 0.6rem 1rem;
  font-size: var(--fs-16);
  font-weight: var(--fw-medium);
  color: var(--ink-700);
  border-radius: var(--radius);
  transition: all var(--dur-fast) var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 4px;
  width: 0; height: 2px;
  background: var(--brand-orange);
  transition: all var(--dur) var(--ease);
  transform: translateX(-50%);
}
.nav__link:hover { color: var(--brand-navy); }
.nav__link:hover::after,
.nav__link.is-active::after { width: 24px; }
.nav__link.is-active { color: var(--brand-navy); }

.nav__actions { display: flex; align-items: center; gap: var(--sp-3); }
.nav__cta { padding: 0.55rem 1.2rem; }

.nav__toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: var(--radius);
  background: var(--ink-100);
  align-items: center; justify-content: center;
}
.nav__toggle span {
  position: relative;
  width: 22px; height: 2px;
  background: var(--ink-900);
  display: block;
  transition: all var(--dur) var(--ease);
}
.nav__toggle span::before,
.nav__toggle span::after {
  content: ""; position: absolute; left: 0; width: 100%; height: 2px;
  background: var(--ink-900);
  transition: all var(--dur) var(--ease);
}
.nav__toggle span::before { top: -7px; }
.nav__toggle span::after  { top:  7px; }
.nav__toggle.is-open span { background: transparent; }
.nav__toggle.is-open span::before { top: 0; transform: rotate(45deg); }
.nav__toggle.is-open span::after  { top: 0; transform: rotate(-45deg); }

/* ====== 移动端菜单 ====== */
@media (max-width: 960px) {
  .topbar { display: none; }
  .announce-bar { display: none; }
  .nav__menu {
    display: none;
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    background: var(--white);
    border-bottom: 1px solid var(--ink-200);
    padding: var(--sp-6);
    gap: var(--sp-2);
    box-shadow: var(--shadow-md);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  .nav__menu.is-open {
    display: flex;
    animation: menuIn .22s ease;
  }
  @keyframes menuIn {
    from { opacity: 0; transform: translateY(-10px); }
    to   { opacity: 1; transform: none; }
  }
  .nav__link { padding: 0.9rem 1rem; width: 100%; }
  .nav__link::after { display: none; }
  .nav__link.is-active { background: var(--ink-100); }
  .nav__toggle { display: inline-flex; position: relative; z-index: 60; box-shadow: var(--shadow-sm); border: 1px solid var(--ink-200); background: var(--white); }
  .nav__cta { display: none; }
}

/* ====== 底部 ====== */
.site-footer {
  background: var(--brand-navy-dark);
  color: rgba(255, 255, 255, .78);
  padding-top: var(--sp-20);
  position: relative;
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand-gold), transparent);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: var(--sp-10);
  margin-bottom: var(--sp-12);
}
.footer h4 {
  color: var(--white);
  font-family: var(--font-sans);
  font-size: var(--fs-16);
  font-weight: var(--fw-semi);
  letter-spacing: .04em;
  margin-bottom: var(--sp-5);
}
.footer p { color: rgba(255, 255, 255, .65); }
.footer ul li { margin-bottom: var(--sp-3); }
.footer ul a {
  color: rgba(255, 255, 255, .7);
  font-size: var(--fs-14);
  transition: color var(--dur-fast) var(--ease);
}
.footer ul a:hover { color: var(--brand-gold); }
.footer__brand .brand__name { color: var(--white); }
.footer__brand .brand__sub { color: rgba(255, 255, 255, .6); }
.footer__contact li { display: flex; gap: var(--sp-3); align-items: flex-start; font-size: var(--fs-14); }
.footer__contact svg { flex-shrink: 0; color: var(--brand-gold); margin-top: 2px; }
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: var(--sp-5) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-3);
  font-size: var(--fs-12);
  color: rgba(255, 255, 255, .5);
}
.footer__bottom a { color: rgba(255, 255, 255, .5); }
.footer__bottom a:hover { color: var(--brand-gold); }
.footer__legal { display: flex; gap: var(--sp-5); flex-wrap: wrap; }

@media (max-width: 960px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer__grid { grid-template-columns: 1fr; gap: var(--sp-8); }
  .footer__bottom { flex-direction: column; text-align: center; }
}

/* ====== 通用页面头（Banner） ====== */
.page-banner {
  position: relative;
  background: linear-gradient(135deg, var(--brand-navy-dark) 0%, var(--brand-navy) 100%);
  color: var(--white);
  padding: clamp(var(--sp-16), 10vw, var(--sp-24)) 0 clamp(var(--sp-12), 8vw, var(--sp-20));
  overflow: hidden;
  text-align: center;
}
.page-banner::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(201, 169, 97, .25), transparent 50%),
              radial-gradient(circle at 80% 70%, rgba(249, 115, 22, .15), transparent 50%);
  pointer-events: none;
}
.page-banner__title { color: var(--white); position: relative; z-index: 1; }
.page-banner__crumb {
  position: relative; z-index: 1;
  display: inline-flex; gap: var(--sp-2);
  font-size: var(--fs-14);
  color: rgba(255, 255, 255, .7);
  margin-top: var(--sp-5);
}
.page-banner__crumb a:hover { color: var(--brand-gold); }
.page-banner__crumb .sep { color: var(--brand-gold); }

/* ====== 产品卡片 ====== */
.product-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--ink-200);
  transition: all var(--dur) var(--ease);
  display: flex;
  flex-direction: column;
  position: relative;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-gold);
}
.product-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #f7f8fb 0%, #ecedf3 100%);
  overflow: hidden;
}
.product-card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s var(--ease);
}
.product-card:hover .product-card__media img { transform: scale(1.08); }
.product-card__badges {
  position: absolute;
  top: var(--sp-3); left: var(--sp-3);
  display: flex; gap: var(--sp-1); flex-wrap: wrap;
  z-index: 1;
}
.product-card__cat {
  position: absolute;
  top: var(--sp-3); right: var(--sp-3);
  font-size: var(--fs-12);
  color: var(--ink-500);
  background: rgba(255, 255, 255, .85);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(4px);
  z-index: 1;
}
.product-card__body {
  padding: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  flex: 1;
}
.product-card__title {
  font-family: var(--font-serif);
  font-size: var(--fs-20);
  font-weight: var(--fw-semi);
  color: var(--ink-900);
  line-height: var(--lh-snug);
}
.product-card__desc {
  color: var(--ink-500);
  font-size: var(--fs-14);
  line-height: var(--lh-normal);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.product-card__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--sp-3);
  padding-top: var(--sp-3);
  border-top: 1px solid var(--ink-200);
}
.product-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--brand-navy);
  font-weight: var(--fw-semi);
  font-size: var(--fs-14);
  transition: gap var(--dur) var(--ease);
}
.product-card__link:hover { gap: 0.7rem; color: var(--brand-orange); }
.product-card__tags { display: flex; gap: 0.3rem; flex-wrap: wrap; }

/* 占位图（无图片时优雅降级） */
.product-card__placeholder {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  color: var(--ink-300);
  font-family: var(--font-serif);
  font-size: var(--fs-36);
  background:
    radial-gradient(circle at 50% 40%, rgba(201, 169, 97, .12), transparent 60%),
    linear-gradient(180deg, #f5f6fa 0%, #e9ebf2 100%);
}
.product-card__placeholder svg { opacity: .55; }

/* ====== 工具条（搜索 + 筛选） ====== */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  margin-bottom: var(--sp-8);
  flex-wrap: wrap;
}
.toolbar__search {
  position: relative;
  flex: 1;
  max-width: 380px;
  min-width: 220px;
}
.toolbar__search input {
  padding-left: 2.5rem;
  background: var(--white);
}
.toolbar__search svg {
  position: absolute;
  left: 0.9rem; top: 50%;
  transform: translateY(-50%);
  color: var(--ink-400);
  pointer-events: none;
}
.filter-pills { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.filter-pill {
  padding: 0.45rem 1rem;
  font-size: var(--fs-14);
  font-weight: var(--fw-medium);
  color: var(--ink-700);
  background: var(--white);
  border: 1.5px solid var(--ink-200);
  border-radius: var(--radius-pill);
  transition: all var(--dur-fast) var(--ease);
  cursor: pointer;
}
.filter-pill:hover { border-color: var(--brand-navy); color: var(--brand-navy); }
.filter-pill.is-active {
  background: var(--brand-navy);
  color: var(--white);
  border-color: var(--brand-navy);
}

.empty-state {
  text-align: center;
  padding: var(--sp-16) 0;
  color: var(--ink-500);
}
.empty-state__icon {
  width: 64px; height: 64px;
  margin: 0 auto var(--sp-4);
  color: var(--ink-300);
}

/* ====== Hero ====== */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--brand-navy-dark) 0%, var(--brand-navy) 100%);
  color: var(--white);
  padding: clamp(var(--sp-16), 10vw, var(--sp-32)) 0 clamp(var(--sp-16), 8vw, var(--sp-24));
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 600px at 85% 30%, rgba(249, 115, 22, .25), transparent 60%),
    radial-gradient(700px 500px at 15% 80%, rgba(201, 169, 97, .18), transparent 60%);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--sp-16);
  align-items: center;
}
.hero__title {
  color: var(--white);
  font-size: clamp(2.4rem, 4.5vw + 1rem, 4.5rem);
  line-height: 1.1;
  margin-bottom: var(--sp-6);
  letter-spacing: -0.02em;
}
.hero__title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--brand-gold-light) 0%, var(--brand-gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero__lead {
  color: rgba(255, 255, 255, .85);
  font-size: var(--fs-18);
  max-width: 520px;
  margin-bottom: var(--sp-8);
  line-height: var(--lh-loose);
}
.hero__cta { display: flex; gap: var(--sp-3); flex-wrap: wrap; }
.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
  margin-top: var(--sp-10);
  padding-top: var(--sp-8);
  border-top: 1px solid rgba(255, 255, 255, .15);
}
.hero__stat .num {
  font-family: var(--font-serif);
  font-size: clamp(var(--fs-30), 4vw, var(--fs-48));
  font-weight: var(--fw-bold);
  color: var(--brand-gold);
  line-height: 1;
  margin-bottom: var(--sp-2);
}
.hero__stat .lbl {
  font-size: var(--fs-14);
  color: rgba(255, 255, 255, .7);
  letter-spacing: .04em;
}

/* Hero 视觉：产品光感球 */
.hero__visual {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 480px;
  margin-left: auto;
}
.hero__glow {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(249, 115, 22, .7) 0%, rgba(249, 115, 22, .15) 35%, transparent 70%);
  filter: blur(40px);
  animation: pulseGlow 4s var(--ease) infinite;
}
@keyframes pulseGlow {
  0%, 100% { transform: scale(1); opacity: .9; }
  50% { transform: scale(1.1); opacity: 1; }
}
.hero__bulb {
  position: absolute;
  inset: 15%;
  background: radial-gradient(circle at 50% 30%, #fff7e6 0%, var(--brand-gold) 40%, var(--brand-gold-dark) 100%);
  border-radius: 50% 50% 45% 45% / 55% 55% 45% 45%;
  box-shadow:
    inset 0 -20px 40px rgba(0, 0, 0, .25),
    0 30px 80px rgba(249, 115, 22, .5);
  animation: float 6s var(--ease) infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.hero__rays {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  color: rgba(255, 255, 255, .3);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  animation: spin 30s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; gap: var(--sp-10); }
  .hero__visual { max-width: 320px; margin: 0 auto; }
}

/* ====== 优势 / Features ====== */
.feature {
  padding: var(--sp-8);
  border-radius: var(--radius-md);
  background: var(--white);
  border: 1px solid var(--ink-200);
  transition: all var(--dur) var(--ease);
  height: 100%;
}
.feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-gold);
}
.feature__icon {
  width: 56px; height: 56px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(30, 58, 138, .08), rgba(201, 169, 97, .15));
  color: var(--brand-navy);
  display: grid; place-items: center;
  margin-bottom: var(--sp-5);
  transition: all var(--dur) var(--ease);
}
.feature:hover .feature__icon {
  background: linear-gradient(135deg, var(--brand-navy) 0%, var(--brand-navy-light) 100%);
  color: var(--brand-gold);
}
.feature__title {
  font-family: var(--font-serif);
  font-size: var(--fs-20);
  font-weight: var(--fw-semi);
  margin-bottom: var(--sp-3);
  color: var(--ink-900);
}
.feature__desc { color: var(--ink-500); font-size: var(--fs-14); line-height: var(--lh-loose); }

/* ====== 时间线 / Process ====== */
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-6);
  counter-reset: step;
}
.process__step {
  counter-increment: step;
  position: relative;
  padding: var(--sp-8) var(--sp-5);
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--ink-200);
  text-align: center;
  transition: all var(--dur) var(--ease);
}
.process__step::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: -16px; left: 50%;
  transform: translateX(-50%);
  width: 36px; height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-gold) 0%, var(--brand-gold-dark) 100%);
  color: var(--brand-navy-dark);
  font-family: var(--font-serif);
  font-weight: var(--fw-bold);
  font-size: var(--fs-14);
  display: grid; place-items: center;
  box-shadow: var(--shadow-gold);
}
.process__step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.process__step h4 { font-size: var(--fs-18); margin-bottom: var(--sp-2); }
.process__step p { font-size: var(--fs-14); color: var(--ink-500); }

@media (max-width: 960px) {
  .process { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .process { grid-template-columns: 1fr; }
}

/* ====== 通用两栏布局 ====== */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-16);
  align-items: center;
}
@media (max-width: 960px) {
  .split { grid-template-columns: 1fr; gap: var(--sp-10); }
}

/* ====== 浮动按钮：返回顶部 + 微信 ====== */
.float-actions {
  position: fixed;
  right: var(--sp-5);
  bottom: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  z-index: var(--z-sticky);
}
.float-btn {
  width: 50px; height: 50px;
  border-radius: 50%;
  background: var(--white);
  color: var(--brand-navy);
  display: grid; place-items: center;
  box-shadow: var(--shadow-md);
  transition: all var(--dur) var(--ease);
  border: 1px solid var(--ink-200);
  cursor: pointer;
}
.float-btn:hover {
  background: var(--brand-navy);
  color: var(--white);
  transform: translateY(-3px);
}
.float-btn--top { opacity: 0; pointer-events: none; }
.float-btn--top.is-visible { opacity: 1; pointer-events: auto; }
.float-btn--wechat { position: relative; }
.float-btn--wechat .qr {
  position: absolute;
  right: calc(100% + 12px); top: 50%;
  transform: translateY(-50%);
  width: 140px; height: 170px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: var(--sp-3);
  display: none;
  text-align: center;
}
.float-btn--wechat .qr strong { font-size: var(--fs-12); color: var(--ink-700); display: block; margin-bottom: var(--sp-1); }
.float-btn--wechat .qr .qr-img {
  width: 110px; height: 110px;
  margin: 0 auto;
  background: var(--ink-100);
  border-radius: var(--radius-sm);
  display: grid; place-items: center;
  color: var(--ink-400);
  font-size: var(--fs-12);
}
.float-btn--wechat:hover .qr { display: block; }

/* ====== 详情页样式 ====== */
.detail__layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--sp-12);
  margin-top: var(--sp-8);
}
@media (max-width: 960px) {
  .detail__layout { grid-template-columns: 1fr; }
}
.gallery {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--ink-200);
  overflow: hidden;
}
.gallery__main {
  aspect-ratio: 4 / 3;
  background: var(--bg-soft);
  position: relative;
  overflow: hidden;
}
.gallery__main img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.gallery__thumbs {
  display: flex;
  gap: 0.5rem;
  padding: var(--sp-3);
  overflow-x: auto;
}
.gallery__thumb {
  width: 80px; height: 80px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  overflow: hidden;
  cursor: pointer;
  background: var(--ink-100);
  transition: border-color var(--dur-fast) var(--ease);
}
.gallery__thumb.is-active { border-color: var(--brand-gold); }
.gallery__thumb img { width: 100%; height: 100%; object-fit: cover; }

.detail__info { padding: 0; }
.detail__cat { font-size: var(--fs-14); color: var(--brand-orange); font-weight: var(--fw-semi); letter-spacing: .12em; text-transform: uppercase; margin-bottom: var(--sp-3); }
.detail__title { font-size: clamp(var(--fs-30), 3vw, var(--fs-36)); margin-bottom: var(--sp-4); }
.detail__meta {
  display: flex; gap: var(--sp-5); flex-wrap: wrap;
  color: var(--ink-500); font-size: var(--fs-14);
  margin-bottom: var(--sp-6);
}
.detail__meta .star { color: var(--brand-gold); }
.detail__desc { color: var(--ink-700); line-height: var(--lh-loose); margin-bottom: var(--sp-6); }

.spec {
  background: var(--bg-soft);
  border-radius: var(--radius);
  padding: var(--sp-6);
  margin-bottom: var(--sp-6);
}
.spec h4 { font-size: var(--fs-18); margin-bottom: var(--sp-4); font-family: var(--font-sans); font-weight: var(--fw-semi); }
.spec__row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: var(--sp-4);
  padding: var(--sp-3) 0;
  border-bottom: 1px dashed var(--ink-200);
  font-size: var(--fs-14);
}
.spec__row:last-child { border-bottom: 0; }
.spec__row dt { color: var(--ink-500); }
.spec__row dd { color: var(--ink-900); font-weight: var(--fw-medium); }

.detail__cta { display: flex; gap: var(--sp-3); flex-wrap: wrap; }

.detail__tabs {
  margin-top: var(--sp-16);
}
.tabs__nav {
  display: flex; gap: 0; border-bottom: 2px solid var(--ink-200);
  margin-bottom: var(--sp-8);
  overflow-x: auto;
}
.tabs__nav button {
  padding: var(--sp-4) var(--sp-6);
  font-size: var(--fs-16);
  font-weight: var(--fw-semi);
  color: var(--ink-500);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.tabs__nav button:hover { color: var(--brand-navy); }
.tabs__nav button.is-active { color: var(--brand-navy); border-bottom-color: var(--brand-orange); }
.tabs__panel { display: none; }
.tabs__panel.is-active { display: block; animation: fadeUp .4s var(--ease); }
.tabs__panel h4 { margin-bottom: var(--sp-3); }
.tabs__panel p, .tabs__panel li { color: var(--ink-700); line-height: var(--lh-loose); margin-bottom: var(--sp-3); }
.tabs__panel ul { padding-left: var(--sp-5); list-style: disc; }

/* ====== 关于/联系页 ====== */
.about-hero {
  position: relative;
  background: linear-gradient(135deg, var(--brand-navy-dark), var(--brand-navy));
  color: var(--white);
  padding: clamp(var(--sp-20), 10vw, var(--sp-32)) 0 clamp(var(--sp-16), 8vw, var(--sp-24));
  text-align: center;
  overflow: hidden;
}
.about-hero::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 100%, rgba(201, 169, 97, .25), transparent 60%);
}
.about-hero__inner { position: relative; z-index: 1; max-width: 760px; margin: 0 auto; }
.about-hero h1 { color: var(--white); }
.about-hero p { color: rgba(255, 255, 255, .85); font-size: var(--fs-18); margin-top: var(--sp-5); }

.value-card {
  padding: var(--sp-8);
  border-radius: var(--radius-md);
  background: var(--white);
  border-top: 4px solid var(--brand-gold);
  text-align: center;
  transition: all var(--dur) var(--ease);
}
.value-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.value-card__num {
  font-family: var(--font-serif);
  font-size: var(--fs-60);
  font-weight: var(--fw-bold);
  color: var(--brand-navy);
  line-height: 1;
  margin-bottom: var(--sp-2);
}
.value-card__lbl { color: var(--ink-500); font-size: var(--fs-14); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--sp-10);
}
@media (max-width: 960px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-info {
  background: linear-gradient(160deg, var(--brand-navy) 0%, var(--brand-navy-dark) 100%);
  color: var(--white);
  padding: var(--sp-10);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
}
.contact-info::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 100% 0%, rgba(201, 169, 97, .25), transparent 50%);
}
.contact-info > * { position: relative; z-index: 1; }
.contact-info h3 { color: var(--white); margin-bottom: var(--sp-6); }
.contact-info li {
  display: flex; gap: var(--sp-4); align-items: flex-start;
  padding: var(--sp-4) 0;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
  color: rgba(255, 255, 255, .85);
  font-size: var(--fs-14);
}
.contact-info li:last-child { border-bottom: 0; }
.contact-info li .ic { color: var(--brand-gold); flex-shrink: 0; margin-top: 2px; }
.contact-info strong { display: block; color: var(--brand-gold); font-size: var(--fs-12); letter-spacing: .15em; text-transform: uppercase; margin-bottom: var(--sp-1); }
.contact-info a { color: var(--white); }
.contact-info a:hover { color: var(--brand-gold); }

.contact-form {
  background: var(--white);
  padding: var(--sp-10);
  border-radius: var(--radius-md);
  border: 1px solid var(--ink-200);
}

/* ====== 杂项 ====== */
.divider-gold {
  width: 60px; height: 3px;
  background: linear-gradient(90deg, var(--brand-gold), var(--brand-orange));
  border-radius: var(--radius-pill);
  margin: var(--sp-5) 0;
}
.divider-gold.center { margin: var(--sp-5) auto; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 80px;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink-900);
  color: var(--white);
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius);
  font-size: var(--fs-14);
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: all var(--dur) var(--ease);
  z-index: var(--z-modal);
}
.toast.is-show { opacity: 1; transform: translateX(-50%) translateY(0); }


/* ====== 移动端综合响应式加强（2026-08-19） ====== */
@media (max-width: 960px) {
  .announce-bar { font-size: var(--fs-12); }
  .detail__cta { flex-wrap: wrap; }
  .detail__cta .btn { flex: 1 1 auto; min-width: 0; }
}
@media (max-width: 560px) {
  .announce-bar { display: none; }
  .site-header { padding: 0.6rem 1rem; }
  .brand__name { font-size: var(--fs-16); }
  .nav__toggle { width: 44px; height: 44px; background: var(--white); }
  .hero { padding: 3rem 0; }
  .hero__title { font-size: clamp(1.8rem, 7vw, 2.4rem); }
  .hero__sub { font-size: var(--fs-15); }
  .section { padding: 2.5rem 0; }
  .container { padding: 0 1rem; }
  .product-card__media { max-width: 100%; }
  .product-card__media img,
  .product-card__media .placeholder,
  .product-card__media svg { max-width: 100%; height: auto; }
  .gallery__main { aspect-ratio: 1 / 1; }
  .gallery__thumbs { gap: 0.4rem; padding: 0.5rem; }
  .gallery__thumb { width: 64px; height: 64px; }
  .detail__title { font-size: 1.4rem; }
  .spec-table, .kv-table, .tabs__panel table { font-size: var(--fs-14); }
  .spec-table th, .spec-table td,
  .kv-table th, .kv-table td { padding: .5rem .6rem; word-break: break-word; }
  .page-banner { padding: 2rem 0; }
  .page-banner__title { font-size: 1.5rem; }
  .float-actions { right: 0.75rem; bottom: 0.75rem; }
  .float-actions .btn { width: 44px; height: 44px; }
  .toast { width: calc(100vw - 2rem); max-width: none; }
  img, svg, video { max-width: 100%; }
  /* 防止任何元素超出视口 */
  .detail__layout, .contact-grid, .split, .about__hero, .about__content { min-width: 0; }
  .card, .feature, .process__step { padding: 1.25rem; }
  .form-grid { grid-template-columns: 1fr; }
  .detail__cta { flex-direction: column; gap: .5rem; }
  .detail__cta .btn { width: 100%; }
}