/* EcoLoop storefront — 设计系统(2026-07-14 定稿)
   品牌绿 #2E8B57(CTA/hover/Logo/图标,≈8%) · 浅绿 #EAF7F0(hero/悬停/徽章,≈3-10%)
   亮绿 #78C850(仅 Success/Warranty/Certified,不用于按钮) · 白底 72% · 深灰字 18%
   圆角:统一 12 / 卡 16 / hero 24 · 阴影:0 6px 18px .08,hover 0 12px 30px .12 · 动画 200ms ease */
:root {
  --primary: #2E8B57; --primary-dark: #256F47;
  --light: #EAF7F0; --accent: #78C850;
  --ink: #1F2937; --muted: #6B7280; --faint: #9CA3AF;
  --bg: #FFFFFF; --card: #FFFFFF; --line: #E5E7EB;
  --sale: #DC2626; --sale-soft: #FF6B6B;
  --r: 12px; --r-card: 16px; --r-hero: 24px;
  --shadow: 0 6px 18px rgba(0,0,0,.08); --shadow-hover: 0 12px 30px rgba(0,0,0,.12);
  --tr: 200ms ease;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: Inter, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--ink); background: var(--bg);
  line-height: 1.6; font-size: 16px; min-height: 100vh; display: flex; flex-direction: column; }
main { flex: 1; }
a { color: var(--ink); text-decoration: none; transition: color var(--tr); }
a:hover { color: var(--primary); }
img { max-width: 100%; display: block; }
h1 { font-size: 1.8rem; font-weight: 700; margin: .6em 0; }
h2 { font-size: 1.35rem; font-weight: 700; margin: .8em 0 .4em; }
h3 { margin: .9em 0 .4em; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 880px; }
.muted { color: var(--muted); font-size: .95em; }

/* header(72px 白底,无色条) */
.topbar { background: var(--light); color: var(--primary-dark); text-align: center; font-size: .8rem; font-weight: 500; padding: 6px 10px; }
.site-header { background: #fff; border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 50; }
.header-row { display: flex; align-items: center; gap: 20px; height: 72px; padding: 0 20px; }
.logo { font-size: 1.55rem; font-weight: 800; color: var(--ink); letter-spacing: -.5px; display: inline-flex; align-items: center; }
.logo-mark { flex-shrink: 0; margin-right: 10px; width: 42px; height: 42px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.05; }
.logo-text .lt-loop { color: var(--primary); display: inline; }
.logo-text { display: block; }
.logo-tagline { display: block; font-size: .56rem; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; color: var(--muted); margin-top: 3px; }
.logo-tagline em { font-style: normal; color: var(--primary); }
.logo:hover { color: var(--ink); }
.search { flex: 1; display: flex; max-width: 460px; }
.search input { flex: 1; border: 1.5px solid var(--line); border-right: 0; border-radius: var(--r) 0 0 var(--r); padding: 10px 14px;
  font-size: .95rem; background: #F8FAFC; transition: background var(--tr), box-shadow var(--tr); font-family: inherit; }
.search input:hover, .search input:focus { background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,.08); outline: none; }
.search button { border: 1.5px solid var(--line); background: #F8FAFC; border-radius: 0 var(--r) var(--r) 0; padding: 0 15px; cursor: pointer; }
.cart-link { font-weight: 600; color: var(--ink); white-space: nowrap; position: relative; }
.cart-count { background: var(--primary); color: #fff; border-radius: 10px; font-size: .75rem; padding: 1px 7px; margin-left: 4px; }
.nav-toggle { display: none; font-size: 1.4rem; background: none; border: 0; cursor: pointer; }
.main-nav { border-top: 1px solid var(--line); background: #fff; }
.nav-row { display: flex; gap: 4px; flex-wrap: wrap; }
.nav-item { position: relative; }
.nav-item > a { display: block; padding: 11px 13px; color: #374151; font-weight: 600; font-size: .93rem; position: relative; }
.nav-item > a::after { content: ''; position: absolute; left: 13px; right: 13px; bottom: 0; height: 2px; background: var(--primary);
  transform: scaleX(0); transition: transform var(--tr); }
.nav-item > a:hover { color: var(--primary); }
.nav-item > a:hover::after { transform: scaleX(1); }
.nav-item > a.sale { color: var(--sale); }
.dropdown { display: none; position: absolute; top: 100%; left: 0; background: #fff; border: 1px solid var(--line);
  border-radius: 0 0 var(--r) var(--r); box-shadow: var(--shadow); min-width: 190px; z-index: 60; }
.dropdown a { display: block; padding: 9px 15px; color: var(--ink); font-size: .92rem; }
.dropdown a:hover { background: var(--light); }
.nav-item.has-children:hover .dropdown { display: block; }

/* hero(560px,45/55,淡绿渐变,圆角24) */
.hero-light { padding: 24px 0 10px; }
.hero-box { background: linear-gradient(180deg, #F6FFF9 0%, #EAF7F0 100%); border-radius: var(--r-hero);
  min-height: 560px; display: grid; grid-template-columns: 45fr 55fr; gap: 30px; align-items: center; padding: 40px 56px; }
.hero-kicker { font-size: .8rem; font-weight: 700; letter-spacing: .12em; color: var(--primary); margin-bottom: 12px; }
.hero-box h1 { font-size: 48px; font-weight: 700; line-height: 1.1; margin: 0 0 16px; letter-spacing: -1px; }
.hero-sub { color: var(--muted); max-width: 460px; margin-bottom: 26px; font-size: 18px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-img { text-align: center; }
.hero-img img { max-height: 420px; margin: 0 auto; mix-blend-mode: multiply; }   /* 商品图白底融入渐变背景,不露白角 */

/* buttons(高48 圆角12;主=品牌绿,副=白底绿框) */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 0 24px; height: 48px; border-radius: var(--r);
  font-weight: 700; border: 2px solid transparent; cursor: pointer; font-size: .97rem; font-family: inherit; transition: all var(--tr); }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); box-shadow: 0 6px 18px rgba(46,139,87,.18); color: #fff; }
.btn-ghost { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-ghost:hover { background: var(--light); color: var(--primary-dark); }
.btn-lg { padding: 0 30px; font-size: 1.05rem; }

/* feature cards(信任条) */
.trust-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin: 40px auto; }
.trust { display: flex; gap: 12px; align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: var(--r-card);
  padding: 18px 20px; font-size: .88rem; transition: all var(--tr); }
.trust:hover { background: #F8FFFA; border-color: #D9EFE3; }
.trust span { font-size: 1.5rem; width: 44px; height: 44px; border-radius: 50%; background: var(--light); color: var(--primary);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; }
.section-head a { color: var(--primary); font-weight: 600; }
section.wrap { padding-top: 28px; padding-bottom: 28px; }

/* category cards(顶部淡绿圆形,像 Reebelo) */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 24px; margin: 18px 0 20px; }
.cat-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-card); text-align: center; color: var(--ink);
  font-weight: 600; transition: all var(--tr); padding: 24px 12px 14px; }
.cat-card:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(0,0,0,.08); color: var(--ink); }
.cat-circle { width: 120px; height: 120px; border-radius: 50%; background: var(--light); margin: 0 auto; display: flex;
  align-items: center; justify-content: center; overflow: hidden; }
.cat-circle img { width: 82%; height: 82%; object-fit: contain; mix-blend-mode: multiply; }   /* 白底商品图融入淡绿圆底 */
.cat-name { padding: 12px 0 0; font-size: .92rem; }

/* product cards(圆角16,hover 上浮) */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(215px, 1fr)); gap: 24px; margin: 18px 0 36px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-card); overflow: hidden; color: var(--ink);
  display: flex; flex-direction: column; transition: all var(--tr); }
.card:hover { box-shadow: 0 16px 40px rgba(0,0,0,.08); transform: translateY(-6px); color: var(--ink); }
.card-img { position: relative; height: 200px; background: #fff; display: flex; align-items: center; justify-content: center; }
.card-img img { width: 100%; height: 100%; object-fit: contain; padding: 16px; }
.noimg { font-size: 3rem; opacity: .3; } .noimg.big { font-size: 6rem; text-align: center; padding: 80px 0; }
.badge { font-size: .72rem; font-weight: 700; padding: 3px 9px; border-radius: 20px; }
.sale-badge { position: absolute; top: 12px; left: 12px; background: var(--sale-soft); color: #fff; }
.oos-badge { position: absolute; top: 12px; right: 12px; background: #6B7280; color: #fff; }
.card-body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.card-title { font-size: .88rem; font-weight: 600; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 3;
  -webkit-box-orient: vertical; overflow: hidden; min-height: 3.5em; }
.card-price { margin-top: auto; display: flex; gap: 8px; align-items: baseline; }
.price { font-weight: 800; color: var(--primary); font-size: 1.05rem; }
.price.big { font-size: 1.75rem; }
s { color: var(--faint); font-size: .9em; }
.from-label { font-size: .78rem; color: var(--muted); font-weight: 600; margin-right: 2px; }
.card-configs { font-size: .78rem; color: var(--muted); }
.cert-badge { position: absolute; top: 12px; left: 12px; background: var(--accent); color: #fff; z-index: 2; }

/* 型号页选择器 */
.opt-group { margin: 16px 0; }
.opt-label { font-size: .88rem; color: var(--muted); margin-bottom: 8px; }
.opt-label strong { color: var(--ink); }
.opt-values { display: flex; flex-wrap: wrap; gap: 8px; }
.opt-btn { border: 1.5px solid var(--line); background: #fff; border-radius: var(--r); padding: 9px 15px; cursor: pointer;
  font-size: .92rem; font-weight: 600; color: var(--ink); transition: all var(--tr); font-family: inherit; }
.opt-btn:hover { border-color: var(--primary); }
.opt-btn.on { border-color: var(--primary); box-shadow: 0 0 0 1.5px var(--primary); background: var(--light); }
.opt-btn.dim { opacity: .45; }
.opt-cond { flex-direction: column; }
.opt-cond .opt-btn { width: 100%; text-align: left; display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; padding: 12px 16px; }
.opt-cond .ob-name { font-weight: 700; }
.opt-cond .ob-price { font-weight: 800; color: var(--primary); }
.opt-cond .ob-desc { grid-column: 1 / -1; font-weight: 400; font-size: .8rem; color: var(--muted); line-height: 1.45; }
.stock-note { color: var(--primary-dark); font-size: .9rem; font-weight: 600; }
.stock-note.oos { color: var(--sale); }
#addBtn:disabled { background: #A7BDB2; border-color: #A7BDB2; cursor: not-allowed; box-shadow: none; }

/* 分类页筛选 chips */
.filter-chips { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin: 4px 0 14px; }
.fc-label { font-size: .8rem; font-weight: 700; color: var(--muted); margin-left: 6px; }
.fc-label:first-child { margin-left: 0; }
.chip { border: 1.5px solid var(--line); background: #fff; border-radius: 20px; padding: 5px 14px; font-size: .85rem;
  font-weight: 600; color: var(--ink); transition: all var(--tr); }
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.on { background: var(--primary); border-color: var(--primary); color: #fff; }

/* product page */
.crumbs { font-size: .84rem; color: var(--muted); margin: 14px 0; }
.crumbs a { color: var(--muted); } .crumbs a:hover { color: var(--primary); }
.product-layout { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 36px; margin-bottom: 30px; }
.gallery-main { position: relative; border: 1px solid var(--line); border-radius: var(--r-card); background: #fff; display: flex;
  align-items: center; justify-content: center; min-height: 320px; }
.gallery-main img { max-height: 480px; object-fit: contain; padding: 16px; }
.thumbs { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.thumbs img { width: 64px; height: 64px; object-fit: contain; border: 1.5px solid var(--line); border-radius: var(--r);
  cursor: pointer; background: #fff; padding: 4px; transition: border-color var(--tr); }
.thumbs img:hover { border-color: var(--primary); }
.product-info h1 { font-size: 1.4rem; line-height: 1.35; }
.pi-price { display: flex; gap: 12px; align-items: baseline; margin: 8px 0 2px; }
.pi-price .badge { position: static; background: var(--sale-soft); color: #fff; }
.pi-trust { display: flex; flex-direction: column; gap: 6px; background: var(--light); border-radius: var(--r);
  padding: 14px 16px; margin: 14px 0; font-size: .9rem; color: var(--primary-dark); }
.pi-trust a { color: var(--primary-dark); text-decoration: underline; }
.add-form { display: flex; gap: 14px; align-items: end; margin: 12px 0 4px; }
.add-form label { font-size: .85rem; color: var(--muted); display: flex; flex-direction: column; gap: 4px; }
.add-form input { width: 74px; padding: 11px 10px; border: 1.5px solid var(--line); border-radius: var(--r); font-size: 1rem; font-family: inherit; }
.oos-note { background: #FEF2F2; border: 1px solid #FECACA; padding: 12px 16px; border-radius: var(--r); }
.pi-desc { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 14px; font-size: .95rem; }
.pi-desc ul { padding-left: 20px; margin: .5em 0; }
.pi-desc h2, .pi-desc h3 { font-size: 1.05rem; }

/* cart & checkout */
.cart-table { width: 100%; border-collapse: collapse; margin: 14px 0; }
.cart-table td { border-bottom: 1px solid var(--line); padding: 12px 8px; vertical-align: middle; }
.ct-img img { width: 64px; height: 64px; object-fit: contain; background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 4px; }
.ct-total { text-align: right; font-weight: 700; white-space: nowrap; }
.qty-input { width: 64px; padding: 8px; border: 1.5px solid var(--line); border-radius: var(--r); font-family: inherit; }
.cart-actions { display: flex; justify-content: space-between; align-items: start; gap: 20px; flex-wrap: wrap; }
.cart-summary { text-align: right; display: flex; flex-direction: column; gap: 8px; align-items: end; }
.subtotal { font-size: 1.15rem; }
.checkout-layout { display: grid; grid-template-columns: 1.4fr 1fr; gap: 36px; align-items: start; margin: 10px 0 40px; }
.checkout-form label { display: block; margin: 10px 0; font-size: .9rem; font-weight: 600; }
.checkout-form input, .checkout-form textarea { width: 100%; padding: 11px 13px; border: 1.5px solid var(--line);
  border-radius: var(--r); font-size: .97rem; margin-top: 4px; font-family: inherit; }
.checkout-form .radio { font-weight: 500; display: flex; gap: 8px; align-items: baseline; }
.checkout-form .radio input { width: auto; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.checkout-form button { margin-top: 16px; width: 100%; }
.order-summary { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-card); padding: 24px; position: sticky; top: 130px; }
.os-line { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; font-size: .92rem; border-bottom: 1px dashed var(--line); }
.os-line.total { border: 0; font-weight: 800; font-size: 1.08rem; padding-top: 12px; }
.alert { background: #FEF2F2; border: 1px solid #FECACA; color: #991B1B; padding: 12px 16px; border-radius: var(--r); margin: 12px 0; }
.alert.ok { background: var(--light); border-color: #D9EFE3; color: var(--primary-dark); }

/* order page(状态徽章:成功态用亮绿) */
.order-status { display: flex; gap: 10px; margin: 12px 0; }
.st-pending { background: #FEF9C3; color: #854D0E; }
.st-paid { background: var(--light); color: var(--primary-dark); }
.st-refunded, .st-cancelled { background: #F3F4F6; color: #4B5563; }
.st-f { background: #F3F4F6; color: #374151; }

/* misc */
.sort-form select { padding: 9px 11px; border: 1.5px solid var(--line); border-radius: var(--r); background: #fff; font-family: inherit; }
.coll-desc { max-width: 760px; color: var(--muted); margin-bottom: 8px; }
.pagination { display: flex; gap: 6px; justify-content: center; margin: 10px 0 36px; flex-wrap: wrap; }
.pg { padding: 7px 13px; border: 1.5px solid var(--line); border-radius: var(--r); background: #fff; color: var(--ink); transition: all var(--tr); }
.pg:hover { border-color: var(--primary); color: var(--primary); }
.pg.current { background: var(--primary); color: #fff; border-color: var(--primary); }
.content-page { padding: 10px 0 40px; }
.rte img { border-radius: var(--r); margin: 10px 0; }
.rte ul, .rte ol { padding-left: 22px; margin: .6em 0; }
.rte table { border-collapse: collapse; } .rte td, .rte th { border: 1px solid var(--line); padding: 6px 10px; }
.rte h2, .rte h3 { margin-top: 1.2em; }
.rte a { color: var(--primary); text-decoration: underline; }

/* 顾客账户 */
.auth-wrap { display: flex; justify-content: center; padding: 40px 0 56px; }
.auth-box { background: #fff; border: 1px solid var(--line); border-radius: var(--r-card); padding: 28px 32px; width: 100%; max-width: 420px; }
.auth-box h1 { font-size: 1.4rem; margin-top: 0; }
.auth-box label { display: block; margin: 12px 0; font-weight: 600; font-size: .9rem; }
.auth-box input { width: 100%; padding: 11px 13px; border: 1.5px solid var(--line); border-radius: var(--r); margin-top: 4px;
  font-size: .97rem; font-family: inherit; }
.auth-box .btn { margin-top: 10px; }
.auth-links { margin-top: 14px; text-align: center; }
.auth-links a { color: var(--primary); }
.btn-google { display: flex; align-items: center; justify-content: center; gap: 10px; width: 100%; background: #fff;
  border: 1.5px solid var(--line); color: var(--ink); }
.btn-google:hover { border-color: var(--primary); background: #fff; }
.auth-or { text-align: center; color: var(--muted); font-size: .8rem; margin: 14px 0 4px; display: flex; align-items: center; gap: 12px; }
.auth-or::before, .auth-or::after { content: ''; flex: 1; height: 1px; background: var(--line); }

/* footer(深灰,不再用深色彩) */
.site-footer { background: #1F2937; color: #D1D5DB; padding: 56px 0 20px; font-size: .9rem; margin-top: auto; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 26px; }
.site-footer h4 { color: #fff; margin-bottom: 10px; }
.tagline { font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: #D1D5DB; margin-bottom: 8px; }
.tagline span { color: var(--accent); }
.site-footer a { display: block; color: #9CA3AF; padding: 3px 0; }
.site-footer a:hover { color: var(--accent); }
.copyright { border-top: 1px solid #374151; margin-top: 30px; padding-top: 14px; font-size: .8rem; color: #6B7280; }

/* responsive */
@media (max-width: 900px) {
  .trust-row { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .product-layout, .checkout-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .order-summary { position: static; }
  .hero-box { grid-template-columns: 1fr; min-height: 0; padding: 32px 26px; }
  .hero-box h1 { font-size: 32px; }
  .hero-img img { max-height: 240px; }
}
@media (max-width: 640px) {
  .header-row { flex-wrap: wrap; height: auto; padding: 10px 16px; }
  .search { order: 3; max-width: none; width: 100%; }
  .nav-toggle { display: block; }
  .main-nav { display: none; }
  body.nav-open .main-nav { display: block; }
  .nav-row { flex-direction: column; }
  .dropdown { position: static; display: block; box-shadow: none; border: 0; padding-left: 14px; }
  .grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .cat-circle { width: 92px; height: 92px; }
}