/* ============================================================
   Cosway Health 站点共享样式
   页面: index.html(首页) / products.html(产品中心) / product.html(商品详情)
   注意: 部署环境为 Linux 宝塔面板, 文件名严格区分大小写
   ============================================================ */

:root {
  --blue: #1d4ed8;
  --blue-dark: #1e3a8a;
  --navy: #0f1f4b;
  --navy-deep: #0b1533;
  --blue-bg: #eef2fb;
  --blue-icon-bg: #e3eafc;
  --text-dark: #16213e;
  --text-gray: #6b7280;
  --whatsapp: #25d366;
  --whatsapp-dark: #1eb855;
  --orange: #d97706;
  --card-border: #e5e7eb;
  --radius: 12px;
  --shadow: 0 4px 18px rgba(15, 31, 75, 0.08);
  --font-sans: "Noto Sans TC", "Noto Sans SC", "PingFang TC", "Microsoft JhengHei", "Microsoft YaHei", -apple-system, "Segoe UI", Arial, sans-serif;
  --font-serif: "Noto Serif TC", "Noto Serif SC", Georgia, "Times New Roman", serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--text-dark);
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ 顶部公告跑马灯 ============ */
.ticker {
  background: var(--navy-deep);
  color: #fff;
  overflow: hidden;
  white-space: nowrap;
  height: 38px;
  display: flex;
  align-items: center;
  font-size: 13px;
}
.ticker__track {
  display: inline-flex;
  align-items: center;
  animation: ticker-scroll 28s linear infinite;
}
.ticker__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 42px;
  flex-shrink: 0;
}
.ticker__item svg { width: 15px; height: 15px; stroke: #93b4f5; }
@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ============ 导航栏 ============ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  box-shadow: 0 2px 10px rgba(15, 31, 75, 0.06);
}
.navbar__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand__logo { width: 40px; height: 40px; object-fit: contain; }
.brand__name {
  font-size: 21px;
  font-weight: 800;
  color: var(--navy);
  line-height: 1.05;
  letter-spacing: .2px;
}
.brand__name small {
  display: block;
  font-size: 17px;
  font-weight: 800;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 15px;
  font-weight: 500;
}
.nav-menu a { color: #333; transition: color .2s; white-space: nowrap; }
.nav-menu a:hover { color: #111; }
.nav-menu a.active { color: var(--blue); font-weight: 700; }

/* ===== 产品中心导航下拉 ===== */
.nav-drop-wrap { position: relative; display: flex; align-items: center; }
.nav-drop-wrap > a { display: inline-flex; align-items: center; gap: 5px; padding: 26px 0; }
.nav-drop-caret { width: 14px; height: 14px; transition: transform .2s; }
.nav-drop-toggle { display: none; }

.nav-drop {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 620px;
  background: #fff;
  border: 1px solid #eef0f5;
  border-radius: 14px;
  box-shadow: 0 18px 44px rgba(15, 31, 75, .14);
  padding: 18px 20px 12px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
  z-index: 120;
}
.nav-drop-wrap:hover .nav-drop,
.nav-drop-wrap:focus-within .nav-drop {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-drop-wrap:hover .nav-drop-caret { transform: rotate(180deg); }

.nav-drop__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 26px;
}
.nav-drop__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 9px 12px;
  border-radius: 9px;
  transition: background .15s;
}
.nav-drop__item:hover { background: #f5f7fc; }
.nav-drop__title { font-size: 14px; font-weight: 700; color: var(--navy); }
.nav-drop__item:hover .nav-drop__title { color: var(--blue); }
.nav-drop__desc { font-size: 12px; color: #8a93a6; line-height: 1.5; }

.nav-drop__all {
  display: block;
  margin-top: 10px;
  padding: 12px;
  border-top: 1px solid #eef0f5;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--blue);
  text-align: center;
}
.nav-drop__all:hover { text-decoration: underline; }
.lang-select {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--card-border);
  border-radius: 6px;
  padding: 8px 14px;
  font-size: 14px;
  color: #333;
  background: #fff;
  cursor: pointer;
  white-space: nowrap;
}

/* 语言下拉菜单 */
.lang-dropdown {
  position: relative;
}
.lang-select__icon {
  width: 18px;
  height: 18px;
  stroke: #333;
}
.lang-select__arrow {
  width: 14px;
  height: 14px;
  stroke: #666;
  transition: transform 0.2s;
}
.lang-dropdown.open .lang-select__arrow {
  transform: rotate(180deg);
}
.lang-dropdown__menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  min-width: 150px;
  z-index: 100;
  display: none;
  list-style: none;
  padding: 4px 0;
}
.lang-dropdown.open .lang-dropdown__menu {
  display: block;
}
.lang-dropdown__menu li a {
  display: block;
  padding: 10px 16px;
  font-size: 14px;
  color: #333;
  text-decoration: none;
  transition: background 0.2s;
}
.lang-dropdown__menu li a:hover {
  background: #f5f5f5;
}
.lang-dropdown__menu li a.active {
  color: var(--blue);
  font-weight: 600;
  background: #eef2fb;
}

/* RTL 支持 */
[dir="rtl"] .lang-dropdown__menu {
  right: auto;
  left: 0;
}
[dir="rtl"] .lang-select__arrow {
  transform: rotate(0deg);
}
[dir="rtl"] .lang-dropdown.open .lang-select__arrow {
  transform: rotate(180deg);
}

.nav-burger { display: none; font-size: 26px; color: var(--navy); }

/* ============ 悬浮按钮 ============ */
.fab-whatsapp {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 90;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: var(--whatsapp);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 8px rgba(37, 211, 102, .18), 0 6px 16px rgba(0,0,0,.2);
  transition: transform .2s;
}
.fab-whatsapp:hover { transform: scale(1.07); }
.fab-whatsapp svg { width: 30px; height: 30px; fill: #fff; }
.fab-whatsapp::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: 50%;
  background: var(--whatsapp);
  animation: fab-ripple 2s ease-out infinite;
  z-index: -1;
}
@keyframes fab-ripple {
  0% { transform: scale(1); opacity: .6; }
  100% { transform: scale(1.8); opacity: 0; }
}
.fab-cart {
  position: fixed;
  right: 28px;
  bottom: 100px;
  z-index: 90;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(15,31,75,.2);
  color: #101828;
  transition: transform .2s;
}
.fab-cart:hover { transform: scale(1.07); }
.fab-cart svg { width: 30px; height: 30px; }
.fab-cart::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: 50%;
  background: rgba(16,24,40,.12);
  animation: fab-ripple 2s ease-out infinite;
  z-index: -1;
}
.fab-cart__badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  border-radius: 10px;
  background: #101828;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 5px;
}

/* ============ 通用区块标题 ============ */
.section { padding: 60px 0; }
.section--alt { background: var(--blue-bg); }
.section-head { text-align: center; margin-bottom: 36px; }
.section-head h2 {
  font-size: 34px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 14px;
}
.section-head p { font-size: 17px; color: var(--text-gray); }

/* ============ 首页 Hero ============ */
.hero {
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
  min-height: 860px;
  display: flex;
  flex-direction: column;
}
.hero__inner {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 70px 24px 0;
  width: 100%;
}
.hero__actions {
  position: relative;
  z-index: 3;
  margin-top: auto;
  display: flex;
  justify-content: center;
  gap: 18px;
  padding: 40px 24px 46px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 38px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  transition: transform .15s, box-shadow .15s, background .15s;
}
.btn:hover { transform: translateY(-2px); }
.btn--white { background: #fff; color: var(--navy); box-shadow: 0 4px 14px rgba(15,31,75,.12); }
.btn--blue { background: var(--blue); color: #fff; box-shadow: 0 4px 14px rgba(29,78,216,.3); }
.btn--green { background: var(--whatsapp); color: #fff; border-radius: 6px; }
.btn--green:hover { background: var(--whatsapp-dark); }

/* ============ 首页 产品方案卡片 ============ */
.plan-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
  max-width: 1080px;
  margin: 0 auto;
}
.plan-card {
  background: #fff;
  border-radius: var(--radius);
  border-top: 4px solid var(--blue);
  box-shadow: var(--shadow);
  padding: 34px 34px 40px;
}
.plan-card__img {
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 26px;
  overflow: hidden;
}
.plan-card__img img { max-height: 100%; width: auto; object-fit: contain; transform: scale(1.07); }
.plan-card h3 { font-size: 24px; font-weight: 800; color: var(--navy); margin-bottom: 16px; }
.plan-card h3 sup { font-size: 13px; }
.plan-card p { font-size: 15px; color: #4b5563; line-height: 1.9; margin-bottom: 26px; }

/* ============ 首页 四步服务 ============ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}
.step-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 40px 26px;
  text-align: center;
}
.icon-badge {
  width: 62px;
  height: 62px;
  border-radius: 14px;
  background: var(--blue-icon-bg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}
.icon-badge svg { width: 30px; height: 30px; stroke: var(--blue); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.step-card h3 { font-size: 19px; font-weight: 700; color: var(--navy); margin-bottom: 14px; }
.step-card p { font-size: 14px; color: #5b6472; line-height: 1.9; }

/* ============ 首页 科学原理卡片 ============ */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  max-width: 1120px;
  margin: 0 auto;
}
.why-card {
  background: var(--blue-bg);
  border-radius: var(--radius);
  padding: 34px 30px 38px;
}
.why-card .icon-badge { background: #fff; }
.why-card h3 { font-size: 19px; font-weight: 700; color: var(--navy); margin-bottom: 16px; }
.why-card p { font-size: 14.5px; color: #4b5563; line-height: 2; }

/* ============ 首页 FAQ ============ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border-radius: 8px;
  margin-bottom: 14px;
  box-shadow: 0 2px 8px rgba(15,31,75,.05);
  overflow: hidden;
}
.faq-item__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 26px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--navy);
  text-align: left;
}
.faq-item__q svg { width: 18px; height: 18px; stroke: #6b7280; fill: none; stroke-width: 2; flex-shrink: 0; transition: transform .25s; }
.faq-item.open .faq-item__q svg { transform: rotate(180deg); }
.faq-item__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease, opacity .3s ease;
  font-size: 14.5px;
  color: #556;
  opacity: 0;
}
.faq-item.open .faq-item__a {
  opacity: 1;
}
.faq-item__a > div { padding: 0 26px 22px; line-height: 1.95; }

/* ============ 首页 CTA 深蓝区 ============ */
.cta {
  background: linear-gradient(120deg, rgba(22, 41, 95, .35) 0%, rgba(29, 78, 216, .3) 100%), url('https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=scientist%20in%20white%20lab%20coat%20holding%20peptide%20vial%20with%20blue%20liquid%2C%20modern%20laboratory%20background%2C%20professional%20research%20setting%2C%20clean%20and%20bright&image_size=landscape_16_9') center/cover;
  color: #fff;
  text-align: center;
  padding: 92px 24px 84px;
  position: relative;
  overflow: hidden;
}
.cta--about {
  background: linear-gradient(120deg, rgba(22, 41, 95, .35) 0%, rgba(29, 78, 216, .3) 100%), url('https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=microscope%20close%20up%20with%20peptide%20sample%20analysis%2C%20blue%20and%20white%20tones%2C%20scientific%20research%20environment%2C%20high%20tech%20laboratory%20equipment&image_size=landscape_16_9') center/cover;
}
.cta--quality {
  background: linear-gradient(120deg, rgba(22, 41, 95, .35) 0%, rgba(29, 78, 216, .3) 100%), url('https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=quality%20control%20laboratory%20with%20HPLC%20equipment%20and%20peptide%20vials%2C%20professional%20biotech%20testing%20facility%2C%20blue%20and%20white%20color%20scheme&image_size=landscape_16_9') center/cover;
}
.cta--team {
  background: linear-gradient(120deg, rgba(22, 41, 95, .35) 0%, rgba(29, 78, 216, .3) 100%), url('https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=team%20of%20scientists%20in%20white%20lab%20coats%20collaborating%20in%20modern%20biotechnology%20laboratory%2C%20professional%20teamwork%2C%20blue%20and%20white%20tones&image_size=landscape_16_9') center/cover;
}

/* ============ 团队成员卡片 ============ */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.team-card {
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .3s, box-shadow .3s;
}
.team-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px rgba(15,31,75,.14);
}
.team-card__img {
  width: 100%;
  aspect-ratio: 3/4;
  overflow: hidden;
  background: var(--blue-bg);
}
.team-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transform: scale(1.07);
  transition: transform .5s;
}
.team-card:hover .team-card__img img {
  transform: scale(1.12);
}
.team-card__info {
  padding: 24px;
  text-align: center;
}
.team-card__info h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 6px;
}
.team-card__title {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--blue);
  background: var(--blue-bg);
  padding: 3px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}
.team-card__info p {
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
}
@media (max-width: 768px) {
  .team-grid { grid-template-columns: 1fr; gap: 24px; }
}
.cta::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,.08) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(255,255,255,.05) 0%, transparent 40%);
  pointer-events: none;
}
.cta__content { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }
.cta__title { font-size: 38px; font-weight: 800; margin-bottom: 16px; }
.cta__subtitle { font-size: 17px; color: #dbe6ff; margin-bottom: 36px; line-height: 1.7; }
.cta__actions { margin-bottom: 40px; }
.cta__actions .btn--green { padding: 18px 46px; font-size: 17px; border-radius: 8px; }
.cta__actions .btn--white { padding: 18px 46px; font-size: 17px; border-radius: 8px; }
.cta__features {
  display: flex;
  justify-content: center;
  gap: 40px;
}
.cta__feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #dbe6ff;
}
.cta__feature svg { width: 18px; height: 18px; stroke: #fff; fill: none; stroke-width: 1.8; }
.cta__note {
  margin-top: 34px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: #dbe6ff;
}
.cta__note svg { width: 18px; height: 18px; stroke: #fff; fill: none; stroke-width: 1.8; }

/* ============ 信任徽章条 ============ */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.trust-item .icon-badge { border-radius: 50%; background: var(--blue-icon-bg); }
.trust-item h3 { font-size: 17px; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.trust-item p { font-size: 13.5px; color: var(--text-gray); }

/* ============ 页脚 ============ */
.footer { background: var(--blue-bg); padding: 64px 0 0; }
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 44px;
  padding-bottom: 48px;
}
.footer__about p { font-size: 14px; color: #4b5563; line-height: 1.95; margin-top: 18px; max-width: 320px; }
.footer h4 { font-size: 16px; font-weight: 700; color: var(--navy); margin-bottom: 20px; }
.footer__links li { margin-bottom: 13px; }
.footer__links a { font-size: 14px; color: #4b5563; transition: color .2s; }
.footer__links a:hover { color: var(--blue); }
.footer__contact p { font-size: 14px; color: #4b5563; margin-bottom: 14px; line-height: 1.85; }
.footer__bottom {
  border-top: 1px solid #d8e0f0;
  padding: 22px 0 30px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: #6b7280;
}
.pay-badge {
  background: #fff;
  border: 1px solid #dbe2f0;
  border-radius: 5px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 700;
  color: #1d4ed8;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.pay-badge--mc { color: #333; }
.pay-badge--mc .mc-circles { display: inline-flex; }
.pay-badge--mc .mc-circles i { width: 14px; height: 14px; border-radius: 50%; display: inline-block; }
.pay-badge--mc .mc-circles i:first-child { background: #eb001b; }
.pay-badge--mc .mc-circles i:last-child { background: #f79e1b; margin-left: -6px; opacity: .9; }
.pay-badge--cod { color: #333; }

/* ============================================================
   产品中心 (COA 列表)
   ============================================================ */
.coa { padding: 24px 0 52px; }

.coa-hero {
  background: radial-gradient(900px 320px at 88% -10%, rgba(201, 162, 94, .16), transparent 62%), linear-gradient(120deg, #0b1220 0%, #131c2b 55%, #1b2536 100%);
  border-radius: 20px;
  color: #fff;
  padding: 36px 44px 32px;
  margin-bottom: 18px;
}
.coa-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #f59e0b;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.6px;
  margin-bottom: 16px;
}
.coa-hero__eyebrow::before { content: ""; width: 22px; height: 1px; background: #f59e0b; }
.coa-hero h1 {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 700;
  letter-spacing: .5px;
  margin-bottom: 14px;
}
.coa-hero p { font-size: 14.5px; color: #b9c2d8; max-width: 640px; line-height: 1.7; margin-bottom: 16px; }
.coa-hero__badges { display: flex; flex-wrap: wrap; gap: 10px; }
.coa-hero__title {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 700;
  letter-spacing: .5px;
  margin-bottom: 14px;
  color: #fff;
}
.coa-hero__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.coa-hero__pills li {
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 12.5px;
  color: #e6eaf5;
}
.coa-pill {
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 12.5px;
  color: #e6eaf5;
}

.coa-list { display: flex; flex-direction: column; gap: 14px; }
.coa-card {
  background: #fff;
  border: 1px solid var(--card-border);
  border-left: 3px solid #f59e0b;
  border-radius: 12px;
  padding: 18px 22px;
  box-shadow: 0 2px 10px rgba(15,31,75,.04);
}
.coa-card__top {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 22px;
  align-items: center;
}
.coa-card__name { font-size: 16.5px; font-weight: 700; color: #101828; margin-bottom: 8px; }
.coa-card__meta { display: flex; flex-wrap: wrap; gap: 18px; font-size: 12.5px; color: #8a93a6; }
.coa-card__meta b { color: #333; font-weight: 700; margin-left: 4px; }
.coa-card__actions { display: flex; flex-direction: column; gap: 10px; }
.btn-product {
  border: 1px solid var(--card-border);
  color: #101828;
  background: #fff;
  border-radius: 8px;
  padding: 9px 26px;
  font-size: 13.5px;
  font-weight: 600;
  text-align: center;
  transition: border-color .2s;
}
.btn-product:hover { border-color: #101828; }
.coa-empty { text-align: center; color: #8a93a6; padding: 40px 0; font-size: 14px; display: none; }

/* ============================================================
   商品详情页
   ============================================================ */
.pdp { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; padding: 32px 0 48px; }
.pdp__gallery { position: relative; }
.pdp__stage {
  position: relative;
  height: 460px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.pdp__stage img { 
  max-height: 100%; 
  width: auto; 
  object-fit: contain; 
  transform: scale(1.07);
  will-change: transform, opacity;
}
.pdp__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--card-border);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(15,31,75,.08);
  z-index: 2;
}
.pdp__arrow svg { width: 17px; height: 17px; stroke: #101828; fill: none; stroke-width: 2; }
.pdp__arrow--prev { left: 6px; }
.pdp__arrow--next { right: 6px; }
.pdp__thumbs { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 14px; }
.pdp__thumbs button {
  width: 72px;
  height: 84px;
  border: 1px solid transparent;
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pdp__thumbs button.active { border-color: #101828; }
.pdp__thumbs img { max-height: 100%; width: auto; object-fit: contain; }

.pdp__badge {
  display: inline-block;
  background: #e7f6ec;
  color: #177245;
  font-size: 12.5px;
  font-weight: 600;
  border-radius: 4px;
  padding: 4px 12px;
  margin-bottom: 10px;
}
.pdp__title {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  color: #101828;
  margin-bottom: 12px;
}
.pdp__desc { font-size: 14.5px; color: #4b5563; line-height: 1.7; margin-bottom: 10px; }
.pdp__guide { color: var(--blue); font-size: 14px; font-weight: 600; display: inline-flex; align-items: center; gap: 6px; margin-bottom: 18px; }

.price-card {
  background: #f7f8fb;
  border-radius: 12px;
  padding: 20px 22px;
  margin-bottom: 18px;
}
.price-card__price { font-size: 28px; font-weight: 800; color: #101828; margin-bottom: 12px; }
.coa-box {
  background: #fff;
  border: 1px solid #dbe7f9;
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 16px;
  box-shadow: 0 1px 4px rgba(15, 31, 75, .04);
}
.coa-box__head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.coa-box__badge {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--blue) 0%, #3b82f6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 8px rgba(29, 78, 216, .28);
}
.coa-box__badge svg { width: 17px; height: 17px; fill: none; stroke: #fff; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.coa-box__titles { flex: 1; min-width: 0; }
.coa-box__title { display: block; font-size: 13.5px; font-weight: 700; color: var(--navy); line-height: 1.3; }
.coa-box__sub { display: block; font-size: 11.5px; color: #6b7280; margin-top: 2px; }
.coa-box__link {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--blue);
  font-size: 12.5px;
  font-weight: 600;
  border: 1px solid #c9dcf7;
  border-radius: 999px;
  padding: 6px 12px;
  background: #f5f9ff;
  transition: background .2s, border-color .2s;
}
.coa-box__link:hover { background: #e8f1fe; border-color: var(--blue); }
.coa-box__stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.coa-stat {
  background: #f7faff;
  border: 1px solid #e3ecfa;
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.coa-stat__label { font-size: 11.5px; color: #6b7280; }
.coa-stat__value { font-size: 18px; font-weight: 800; color: var(--navy); margin-top: 2px; line-height: 1.2; }
.coa-stat__bar { display: block; height: 4px; border-radius: 2px; background: #e5eaf5; margin-top: 8px; overflow: hidden; }
.coa-stat__bar i { display: block; height: 100%; border-radius: 2px; background: linear-gradient(90deg, var(--blue), #60a5fa); }
.coa-stat__bar--green i { background: linear-gradient(90deg, #16a34a, #4ade80); }
.price-card__discount { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: #333; padding: 2px 2px 12px; }
.price-card__discount .check { color: #16a34a; font-weight: 800; }
.price-card__discount b { color: #d97706; }
.qty-row { display: grid; grid-template-columns: 1fr 1.4fr; gap: 14px; align-items: end; }
.qty-row label { display: block; font-size: 13.5px; font-weight: 700; color: #101828; margin-bottom: 8px; }
.stepper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  background: #fff;
  height: 46px;
  padding: 0 6px;
}
.stepper button { width: 40px; height: 40px; font-size: 20px; color: #101828; border-radius: 6px; }
.stepper button:hover { background: #f1f3f8; }
.stepper input { width: 56px; text-align: center; border: none; outline: none; font-size: 16px; font-weight: 700; background: transparent; }
.btn-cart {
  height: 46px;
  background: #101828;
  color: #fff;
  border-radius: 8px;
  font-size: 15.5px;
  font-weight: 700;
  width: 100%;
  transition: background .2s;
}
.btn-cart:hover { background: #1f2d4d; }

.ship-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  background: #fff;
  margin-bottom: 16px;
}
.ship-item { text-align: center; padding: 14px 8px; border-right: 1px solid #eef0f5; }
.ship-item:last-child { border-right: none; }
.ship-item .ic {
  width: 34px; height: 34px;
  margin: 0 auto 10px;
  border-radius: 50%;
  border: 1.5px solid var(--blue);
  display: flex; align-items: center; justify-content: center;
  color: var(--blue);
  font-size: 15px;
}
.ship-item .ic svg { width: 16px; height: 16px; stroke: var(--blue); fill: none; stroke-width: 1.8; }
.ship-item b { display: block; font-size: 12.5px; color: #101828; margin-bottom: 3px; }
.ship-item span { font-size: 11px; color: #8a93a6; }
.ship-item .ic .code { font-size: 11px; font-weight: 700; color: var(--blue); letter-spacing: .3px; }

/* ---------- 详情页：复溶建议 / 规格选择 ---------- */
.pdp__reco { font-size: 14.5px; color: #4b5563; line-height: 1.9; margin-bottom: 14px; }
.pdp__reco b { color: #101828; }
.pdp__reco a { color: var(--blue); font-weight: 700; text-decoration: underline; text-underline-offset: 3px; }
.pdp__reco a:hover { color: var(--blue-dark); }

.pdp-size { margin-bottom: 18px; }
.pdp-size__label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #101828;
  margin-bottom: 10px;
}
.pdp-size__opts { display: flex; flex-wrap: wrap; gap: 10px; }
.pdp-size__opt {
  position: relative;
  height: 44px;
  min-width: 84px;
  padding: 0 14px;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  background: #fff;
  font-size: 14px;
  font-weight: 600;
  color: #101828;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: border-color .18s, background .18s, color .18s;
}
.pdp-size__opt:hover { border-color: #c9a25e; }
.pdp-size__opt.is-active {
  border-color: #c9a25e;
  border-width: 1.5px;
  background: #fdf9f1;
  color: #101828;
}
.pdp-size__tick { display: none; color: #b0894a; font-weight: 800; }
.pdp-size__opt.is-active .pdp-size__tick { display: inline; }

.notice-research {
  background: #fdf6e3;
  border-radius: 10px;
  padding: 16px 20px;
  font-size: 13px;
  color: #556;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  line-height: 1.8;
}
.notice-research .warn {
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 1.5px solid #b45309;
  color: #b45309;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800;
  margin-top: 2px;
}
.notice-research b { color: #92400e; }

.disclaimer {
  background: #000;
  color: #e5e7eb;
  padding: 84px 24px;
  text-align: center;
  font-size: 14.5px;
  line-height: 2.1;
}
.disclaimer b { color: #fff; }
.disclaimer .container { max-width: 860px; }

/* ============================================================
   内页通用 (health / faq / about / contact)
   ============================================================ */

/* ---------- 健康直达: BMI 计算器 ---------- */
.bmi-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
  max-width: 1040px;
  margin: 0 auto;
}
.bmi-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px 34px;
}
.bmi-card h3 { font-size: 20px; font-weight: 700; color: var(--navy); margin-bottom: 24px; }
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 14px; font-weight: 600; color: var(--navy); margin-bottom: 8px; }
.field input, .field select, .field textarea {
  width: 100%;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 14.5px;
  outline: none;
  background: #fff;
  transition: border-color .2s;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--blue); }
.field textarea { min-height: 120px; resize: vertical; }
.bmi-result {
  display: none;
  margin-top: 22px;
  border-radius: 10px;
  padding: 20px 22px;
  background: var(--blue-bg);
}
.bmi-result.show { display: block; }
.bmi-result .num { font-size: 34px; font-weight: 800; color: var(--navy); }
.bmi-result .tag {
  display: inline-block;
  margin-left: 12px;
  font-size: 13px;
  font-weight: 700;
  border-radius: 999px;
  padding: 4px 14px;
  color: #fff;
}
.bmi-result p { font-size: 13.5px; color: #4b5563; margin-top: 8px; line-height: 1.8; }
.bmi-scale { display: flex; border-radius: 8px; overflow: hidden; margin-top: 16px; font-size: 11.5px; color: #fff; text-align: center; }
.bmi-scale span { padding: 6px 2px; }
.bmi-scale .s1 { background: #3b82f6; flex: 1.4; }
.bmi-scale .s2 { background: #16a34a; flex: 1.2; }
.bmi-scale .s3 { background: #f59e0b; flex: 1; }
.bmi-scale .s4 { background: #ef4444; flex: 1; }
.bmi-intro h2 { font-size: 28px; font-weight: 800; color: var(--navy); margin-bottom: 18px; }
.bmi-intro p { font-size: 15px; color: #4b5563; line-height: 2; margin-bottom: 14px; }

/* ---------- 健康直达: 服务通道 ---------- */
.channel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.channel-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px 30px;
  text-align: center;
}
.channel-card .icon-badge { background: var(--blue-icon-bg); border-radius: 50%; }
.channel-card h3 { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 12px; }
.channel-card p { font-size: 14px; color: #5b6472; line-height: 1.9; margin-bottom: 22px; }

/* ---------- FAQ 内页 ---------- */
.faq-cats { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-bottom: 44px; }
.faq-cat {
  border: 1px solid var(--card-border);
  background: #fff;
  border-radius: 999px;
  padding: 9px 22px;
  font-size: 14px;
  font-weight: 600;
  color: #4b5563;
  transition: all .2s;
}
.faq-cat.active, .faq-cat:hover { background: var(--blue); border-color: var(--blue); color: #fff; }
.faq-list--wide { max-width: 860px; }

/* ---------- 关于高士威 ---------- */
.about-intro { max-width: 820px; margin: 0 auto 64px; text-align: center; }
.about-intro p { font-size: 16px; color: #4b5563; line-height: 2.1; }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-bottom: 72px; }
.value-card {
  background: var(--blue-bg);
  border-radius: var(--radius);
  padding: 34px 28px;
  text-align: center;
}
.value-card .icon-badge { background: #fff; border-radius: 50%; }
.value-card h3 { font-size: 18px; font-weight: 700; color: var(--navy); margin-bottom: 12px; }
.value-card p { font-size: 14px; color: #4b5563; line-height: 1.9; }
.timeline { max-width: 760px; margin: 0 auto; position: relative; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px; width: 2px; background: #d5e0f5; }
.timeline-item { position: relative; padding: 0 0 34px 26px; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -30px; top: 5px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--blue);
}
.timeline-item h3 { font-size: 16px; font-weight: 800; color: var(--navy); margin-bottom: 6px; }
.timeline-item h3 em { font-style: normal; color: var(--blue); margin-right: 10px; }
.timeline-item p { font-size: 14px; color: #5b6472; line-height: 1.9; }

/* ---------- 联系我们 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 44px;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 18px; }
.contact-item {
  display: flex;
  gap: 18px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px 26px;
  align-items: flex-start;
}
.contact-item .icon-badge { width: 50px; height: 50px; border-radius: 50%; margin: 0; flex-shrink: 0; }
.contact-item .icon-badge svg { width: 24px; height: 24px; }
.contact-item h3 { font-size: 16px; font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.contact-item p { font-size: 14px; color: #5b6472; line-height: 1.8; }
/* 邮箱列表（带头像） */
.contact-emails { display: flex; flex-direction: column; gap: 10px; }
.contact-email { display: flex; align-items: center; gap: 10px; font-size: 14px; color: #5b6472; }
.contact-email a { color: var(--blue); font-weight: 600; }
.contact-email a:hover { text-decoration: underline; }
.contact-email__label { display: block; font-size: 12px; color: #8a93a6; font-weight: 600; margin-bottom: 1px; }
.contact-email__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top center;
  flex-shrink: 0;
  border: 2px solid #fff;
  box-shadow: 0 2px 8px rgba(15, 31, 75, .18);
}
.contact-email__desc { font-size: 13px; color: #8a93a6; line-height: 1.6; margin-top: 2px; }
.contact-form {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px 34px;
}
.contact-form h3 { font-size: 20px; font-weight: 700; color: var(--navy); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-error { font-size: 12.5px; color: #dc2626; margin-top: 6px; display: none; }
.field.invalid .form-error { display: block; }
.field.invalid input, .field.invalid textarea, .field.invalid select { border-color: #dc2626; }
.form-ok {
  display: none;
  margin-top: 18px;
  background: #e7f6ec;
  color: #177245;
  border-radius: 8px;
  padding: 14px 18px;
  font-size: 14px;
}
.form-ok.show { display: block; }

@media (max-width: 1024px) {
  .bmi-wrap, .contact-grid { grid-template-columns: 1fr; }
  .channel-grid, .value-grid { grid-template-columns: 1fr; max-width: 520px; margin-left: auto; margin-right: auto; }
}
@media (max-width: 768px) {
  .form-row { grid-template-columns: 1fr; }
}

/* ============================================================
   购物车侧边面板
   ============================================================ */
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s, visibility .3s;
}
.cart-overlay.open { opacity: 1; visibility: visible; }

.cart-panel {
  position: fixed;
  top: 0; right: 0;
  width: 400px;
  max-width: 92vw;
  height: 100vh;
  background: #fff;
  z-index: 210;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform .35s cubic-bezier(.4,0,.2,1);
  box-shadow: -6px 0 30px rgba(0,0,0,.15);
}
.cart-panel.open { transform: translateX(0); }

.cart-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 24px;
  border-bottom: 1px solid #eceff3;
  flex-shrink: 0;
}
.cart-panel__head h3 {
  font-size: 18px;
  font-weight: 700;
  color: #101828;
  margin: 0;
}
.cart-panel__close {
  width: 36px; height: 36px;
  border-radius: 8px;
  border: 1px solid #eceff3;
  background: #fff;
  font-size: 22px;
  color: #556;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .15s;
}
.cart-panel__close:hover { background: #f4f5f8; }

.cart-panel__body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 24px;
}

/* 空购物车 */
.cart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: #98a2b3;
  gap: 12px;
}
.cart-empty__icon { width: 56px; height: 56px; opacity: .35; }
.cart-empty__text { font-size: 14px; }

/* 购物车商品行 */
.cart-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid #f0f2f5;
  align-items: start;
}
.cart-item:last-child { border-bottom: none; }

.cart-item__img {
  width: 64px;
  height: 64px;
  border-radius: 10px;
  overflow: hidden;
  background: #f7f8fb;
  border: 1px solid #eceff3;
  flex-shrink: 0;
}
.cart-item__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.07);
}
.cart-item__img--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #c5cad4;
}
.cart-item__img--empty svg { width: 28px; height: 28px; }

.cart-item__body { min-width: 0; }

.cart-item__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
}

.cart-item__info { min-width: 0; flex: 1; }
.cart-item__name {
  font-size: 13.5px;
  font-weight: 700;
  color: #101828;
  margin: 0 0 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.cart-item__size {
  font-size: 12px;
  color: #667;
  margin: 0;
}

.cart-item__price-col { text-align: right; flex-shrink: 0; }
.cart-item__price {
  font-size: 15px;
  font-weight: 700;
  color: #101828;
  white-space: nowrap;
}
.cart-item__unit {
  font-size: 11px;
  color: #98a2b3;
  margin-top: 2px;
}

.cart-item__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.cart-item__qty {
  display: inline-flex;
  align-items: center;
  gap: 0;
  border: 1px solid #e4e7ec;
  border-radius: 6px;
  overflow: hidden;
  height: 32px;
}
.cart-item__qty button {
  width: 32px; height: 32px;
  font-size: 16px;
  color: #101828;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
}
.cart-item__qty button:hover { background: #f4f5f8; }
.cart-item__qty span {
  width: 36px;
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  color: #101828;
  border-left: 1px solid #e4e7ec;
  border-right: 1px solid #e4e7ec;
  line-height: 32px;
}

.cart-item__remove {
  font-size: 12px;
  color: #98a2b3;
  background: none;
  border: none;
  padding: 2px 0;
  cursor: pointer;
  transition: color .15s;
}
.cart-item__remove:hover { color: #ef4444; }

/* 底部 */
.cart-panel__foot {
  padding: 18px 24px;
  border-top: 1px solid #eceff3;
  flex-shrink: 0;
  background: #fff;
}
.cart-panel__total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  font-size: 15px;
  color: #556;
}
.cart-panel__total-price {
  font-size: 22px;
  font-weight: 800;
  color: #101828;
}
.cart-panel__discount {
  font-size: 12px;
  color: #16a34a;
  margin-bottom: 14px;
}
.cart-panel__checkout {
  width: 100%;
  height: 48px;
  background: #101828;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: background .2s;
}
.cart-panel__checkout:hover { background: #1f2d4d; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .steps-grid, .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; max-width: 560px; }
  .pdp { grid-template-columns: 1fr; gap: 36px; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .ship-grid { grid-template-columns: repeat(3, 1fr); }
  .ship-item { border-bottom: 1px solid #eef0f5; }
}
@media (max-width: 768px) {
  .nav-menu, .lang-select { display: none; }
  .nav-burger { display: block; }
  .nav-menu.open {
    display: flex;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    padding: 20px;
    gap: 18px;
    box-shadow: 0 8px 20px rgba(15,31,75,.12);
  }
  /* 移动端：产品中心下拉改为点击折叠面板 */
  .nav-drop-wrap { position: relative; width: 100%; }
  .nav-drop-caret { display: none; }
  .nav-drop-toggle {
    display: inline-flex; position: absolute; top: -6px; right: 0;
    width: 34px; height: 34px; border: none; background: transparent; cursor: pointer;
  }
  .nav-drop-toggle::after {
    content: ""; width: 8px; height: 8px;
    border-right: 2px solid #333; border-bottom: 2px solid #333;
    transform: rotate(45deg); margin-top: -4px;
    transition: transform .2s;
  }
  .nav-drop-wrap.open .nav-drop-toggle::after { transform: rotate(-135deg); margin-top: 4px; }
  .nav-drop {
    display: none; position: static; transform: none;
    min-width: 0; width: 100%; opacity: 1; visibility: visible; pointer-events: auto;
    box-shadow: none; border: none; border-radius: 0; padding: 12px 0 0;
  }
  .nav-drop-wrap.open .nav-drop { display: block; }
  .nav-drop__grid { grid-template-columns: 1fr; gap: 2px; }
  .plan-grid { grid-template-columns: 1fr; }
  .coa-card__top { grid-template-columns: 1fr; gap: 16px; }
  .coa-card__actions { flex-direction: row; }
  .coa-hero__title { font-size: 32px; }
  .qty-row { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
}