/* =========================================================
   莘选供应链 · 品牌官网单页
   Design tokens / Layout / Components
   ========================================================= */

:root {
  --ink: #0F1512;
  --ink-2: #18211D;
  --ink-3: #24302A;
  --muted: #5C6B63;
  --muted-2: #8A9991;
  --paper: #FBF9F5;
  --paper-2: #F4F0E8;
  --paper-3: #EDE7DB;
  --accent: #FF6A00;
  --accent-dark: #E25C00;
  --accent-soft: rgba(255, 106, 0, .10);
  --line: rgba(15, 21, 18, .10);
  --line-strong: rgba(15, 21, 18, .18);
  --line-light: rgba(255, 255, 255, .12);
  --radius: 16px;
  --radius-sm: 10px;
  --wrap: 1180px;
  --shadow-sm: 0 1px 2px rgba(15, 21, 18, .05);
  --shadow-md: 0 12px 32px -12px rgba(15, 21, 18, .18);
  --shadow-lg: 0 28px 60px -24px rgba(15, 21, 18, .30);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC",
          Roboto, Helvetica, Arial, sans-serif;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  font-feature-settings: "tnum" 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.2; letter-spacing: -.02em; font-weight: 700; }
p { margin: 0; }
ul, ol, dl, dd { margin: 0; padding: 0; }
li { list-style: none; }

::selection { background: var(--accent); color: #fff; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--ink);
  color: #fff;
  padding: 12px 20px;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Top bar (关联店铺) ---------- */
.topbar {
  background: var(--ink);
  color: rgba(255, 255, 255, .72);
  font-size: 12.5px;
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 36px;
  padding-top: 4px;
  padding-bottom: 4px;
  flex-wrap: wrap;
}
.topbar-tag {
  display: inline-flex;
  align-items: center;
  height: 18px;
  padding: 0 7px;
  border-radius: 999px;
  background: rgba(255, 106, 0, .16);
  color: #ffb27a;
  font-size: 11px;
  letter-spacing: .04em;
}
.topbar-link {
  color: rgba(255, 255, 255, .88);
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.topbar-link:hover { color: #fff; border-bottom-color: var(--accent); }
.topbar-arrow { margin-left: 6px; color: var(--accent); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .01em;
  white-space: nowrap;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .22s var(--ease), background .22s var(--ease),
              color .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
}
.btn-lg { height: 52px; padding: 0 30px; font-size: 15px; }
.btn-solid {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 24px -10px rgba(255, 106, 0, .7);
}
.btn-solid:hover { background: var(--accent-dark); transform: translateY(-1px); }
.btn-line {
  border-color: var(--line-strong);
  color: var(--ink);
  background: transparent;
}
.btn-line:hover { border-color: var(--ink); background: rgba(15, 21, 18, .04); }
.btn-ghost { color: var(--ink); }
.btn-ghost:hover { background: rgba(15, 21, 18, .05); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 249, 245, .82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(251, 249, 245, .94);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 76px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  width: 34px;
  height: 34px;
  color: var(--accent);
  display: grid;
  place-items: center;
}
.brand-mark svg { width: 100%; height: 100%; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 17px; letter-spacing: -.01em; }
.brand-text em {
  font-style: normal;
  font-size: 10.5px;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.5vw, 28px);
  flex-wrap: nowrap;
  margin-left: auto;
}
.nav a {
  position: relative;
  white-space: nowrap;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--muted);
  padding: 6px 0;
  transition: color .2s var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width .24s var(--ease);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after,
.nav a.is-active::after { width: 100%; }
.nav a.is-active { color: var(--ink); }

.header-cta { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.header-cta .btn { white-space: nowrap; }

/* 旗下店铺优先：婵娴饰品店 */
.btn-cx { color: var(--accent); }
.btn-cx:hover { background: rgba(255, 106, 0, .08); }
.btn-line.btn-cx { border-color: rgba(255, 106, 0, .45); color: var(--accent); }
.btn-line.btn-cx:hover { border-color: var(--accent); background: rgba(255, 106, 0, .05); }
.footer-cx { color: var(--accent); }
.footer-cx:hover { color: #fff; }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .25s var(--ease), opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- Eyebrow ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 18px;
}
.eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 72px 0 0;
  overflow: hidden;
  background:
    radial-gradient(1100px 520px at 78% -12%, rgba(255, 106, 0, .10), transparent 62%),
    radial-gradient(900px 480px at 6% 8%, rgba(24, 33, 29, .06), transparent 58%),
    var(--paper);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(15, 21, 18, .045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 21, 18, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(760px 460px at 42% 18%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(760px 460px at 42% 18%, #000 0%, transparent 78%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 56px;
  align-items: start;
  padding-bottom: 64px;
}
.hero-copy h1 {
  font-size: clamp(34px, 4.6vw, 56px);
  line-height: 1.14;
  letter-spacing: -.035em;
  margin-bottom: 22px;
}
.hero-copy h1 .hl {
  position: relative;
  white-space: nowrap;
  color: var(--ink);
}
.hero-copy h1 .hl::after {
  content: "";
  position: absolute;
  left: -2px;
  right: -2px;
  bottom: .08em;
  height: .30em;
  background: rgba(255, 106, 0, .26);
  z-index: -1;
  border-radius: 2px;
}
.lead {
  font-size: 17px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 62ch;
  margin-bottom: 30px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 26px; }
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  font-size: 13px;
  color: var(--muted);
}
.hero-tags li {
  position: relative;
  padding-left: 16px;
}
.hero-tags li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
}

/* Hero card */
.hero-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-md);
  position: relative;
  top: 4px;
}
.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 6px;
}
.chip {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 999px;
}
.live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  color: var(--muted-2);
}
.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #29A36A;
  box-shadow: 0 0 0 3px rgba(41, 163, 106, .16);
}
.stat-list > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line);
}
.stat-list > div:last-child { border-bottom: 0; }
.stat-list dt { font-size: 14px; color: var(--muted); }
.stat-list dd {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
}
.stat-list .unit {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted-2);
  margin-left: 2px;
  letter-spacing: 0;
}
.card-foot {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--muted-2);
  line-height: 1.6;
}

/* Metrics strip */
.metrics {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .5);
}
.metric {
  padding: 24px 18px 26px;
  border-right: 1px solid var(--line);
}
.metric:last-child { border-right: 0; }
.metric b {
  display: block;
  font-size: clamp(22px, 2.2vw, 30px);
  font-weight: 700;
  letter-spacing: -.035em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.metric b small {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--muted-2);
  margin-left: 3px;
}
.metric span {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--muted-2);
  letter-spacing: .01em;
}

/* ---------- Section shell ---------- */
.section { padding: 92px 0; }
.section-alt {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-head { max-width: 760px; margin-bottom: 46px; }
.section-head h2 {
  font-size: clamp(26px, 3vw, 38px);
  letter-spacing: -.03em;
  margin-bottom: 14px;
}
.section-sub {
  font-size: 15.5px;
  color: var(--muted);
  line-height: 1.8;
}
.body-lg { font-size: 17px; line-height: 1.85; color: var(--ink-2); }

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .85fr);
  gap: 64px;
  align-items: start;
}
.about-main h2 {
  font-size: clamp(26px, 3vw, 38px);
  letter-spacing: -.03em;
  margin-bottom: 26px;
}
.about-main p + p { margin-top: 18px; }
.about-main p { color: var(--muted); font-size: 15.5px; line-height: 1.9; }
.about-main .body-lg { color: var(--ink-2); }
.about-main b { color: var(--ink); font-weight: 600; }

.about-side {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  box-shadow: var(--shadow-sm);
}
.side-title {
  font-size: 13px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted-2);
  font-weight: 700;
  padding-bottom: 14px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--line);
}
.profile > div {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 13.5px;
}
.profile > div:last-child { border-bottom: 0; padding-bottom: 0; }
.profile dt { color: var(--muted-2); }
.profile dd { color: var(--ink-2); font-weight: 500; line-height: 1.6; }

/* ---------- Products ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.product-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px 26px;
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.product-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.product-card:hover::before { transform: scaleX(1); }
.p-idx {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--muted-2);
  margin-bottom: 14px;
  font-variant-numeric: tabular-nums;
}
.product-card h3 { font-size: 19px; margin-bottom: 12px; letter-spacing: -.02em; }
.product-card p { font-size: 13.5px; line-height: 1.85; color: var(--muted); }
.p-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 18px;
}
.p-tags li {
  font-size: 11.5px;
  color: var(--ink-2);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 10px;
}
.grid-note {
  margin-top: 26px;
  font-size: 13.5px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.grid-note a {
  color: var(--accent-dark);
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 106, 0, .35);
  transition: border-color .2s var(--ease);
}
.grid-note a:hover { border-bottom-color: var(--accent); }

/* ---------- Hot products ---------- */
.hot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}
.hot-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.hot-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.hot-link { display: flex; flex-direction: column; height: 100%; }
.hot-media {
  position: relative;
  margin: 0;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--paper-2);
}
.hot-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s var(--ease);
}
.hot-card:hover .hot-media img { transform: scale(1.045); }
.hot-sold {
  position: absolute;
  left: 10px;
  top: 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .02em;
  color: #fff;
  background: rgba(15, 21, 18, .72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  padding: 4px 9px;
  border-radius: 999px;
}
.hot-body {
  padding: 15px 16px 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.hot-body h3 {
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.55;
  letter-spacing: 0;
  color: var(--ink-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  /* 固定两行高度，保证不带阶梯价小字的卡片价格行与同排对齐 */
  min-height: calc(2 * 1.55em);
}
.hot-price {
  margin-top: 0;
  padding-top: 12px;
  color: var(--accent-dark);
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.hot-price b {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
}
.hot-price span { font-size: 11.5px; color: var(--muted-2); }
.hot-tier {
  margin-top: 2px;
  font-size: 11.5px;
  color: var(--muted-2);
}

.hot-card-more {
  background: var(--ink);
  border-color: transparent;
}
.hot-more-inner {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 10px;
  padding: 26px 24px;
  color: #fff;
}
.hot-more-inner strong {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -.04em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.hot-more-inner strong span { color: var(--accent); }
.hot-more-inner p {
  font-size: 12.5px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .62);
  /* 窄屏下按分隔符换行，避免把「发带」拆成两行 */
  word-break: keep-all;
}
.hot-more-btn {
  margin-top: 6px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 16px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  transition: background .22s var(--ease);
}
.hot-card-more:hover .hot-more-btn { background: var(--accent-dark); }

.hot-note {
  margin-top: 22px;
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--muted-2);
  max-width: 78ch;
}

/* ---------- Capability ---------- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.cap-card {
  background: var(--paper);
  padding: 30px 26px;
  transition: background .3s var(--ease);
}
.cap-card:hover { background: #fff; }
.cap-ico {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  margin-bottom: 20px;
}
.cap-ico svg { width: 22px; height: 22px; }
.cap-card h3 { font-size: 16.5px; margin-bottom: 10px; }
.cap-card p { font-size: 13.5px; line-height: 1.85; color: var(--muted); }

.honor {
  margin-top: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
}
.honor h3 {
  font-size: 13px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted-2);
  font-weight: 700;
  margin-bottom: 20px;
}
.honor-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}
.honor-list li { padding-left: 14px; border-left: 2px solid var(--accent); }
.honor-list b { display: block; font-size: 15px; margin-bottom: 6px; letter-spacing: -.01em; }
.honor-list span { font-size: 12.5px; color: var(--muted-2); line-height: 1.7; }

/* ---------- Custom (dark) ---------- */
.section-dark {
  background: var(--ink);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.section-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(900px 420px at 88% 0%, rgba(255, 106, 0, .16), transparent 60%),
    radial-gradient(700px 380px at 0% 100%, rgba(255, 255, 255, .05), transparent 60%);
  pointer-events: none;
}
.section-dark .wrap { position: relative; }
.section-head-light .eyebrow { color: rgba(255, 255, 255, .55); }
.section-head-light h2 { color: #fff; }
.section-head-light .section-sub { color: rgba(255, 255, 255, .62); }

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 26px 22px 24px;
  background: rgba(255, 255, 255, .045);
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
  transition: background .3s var(--ease), transform .3s var(--ease);
}
.step:hover { background: rgba(255, 255, 255, .075); transform: translateY(-3px); }
.step-no {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--accent);
  margin-bottom: 16px;
  font-variant-numeric: tabular-nums;
}
.step h3 { font-size: 17px; margin-bottom: 12px; color: #fff; }
.step p { font-size: 13.5px; line-height: 1.85; color: rgba(255, 255, 255, .62); }
.step-meta {
  display: inline-block;
  margin-top: 18px;
  font-size: 11.5px;
  letter-spacing: .04em;
  color: rgba(255, 255, 255, .75);
  background: rgba(255, 255, 255, .08);
  border-radius: 999px;
  padding: 3px 11px;
}

.custom-note {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.custom-note p {
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .60);
  background: rgba(255, 255, 255, .035);
  border: 1px solid var(--line-light);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
}
.custom-note b { color: #fff; font-weight: 600; }

/* ---------- FAQ ---------- */
.faq-wrap { max-width: 920px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details {
  border-bottom: 1px solid var(--line);
  transition: background .25s var(--ease);
}
.faq-list details[open] { background: rgba(255, 255, 255, .6); }
.faq-list summary {
  position: relative;
  cursor: pointer;
  list-style: none;
  padding: 22px 52px 22px 4px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--ink);
  transition: color .2s var(--ease);
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary:hover { color: var(--accent-dark); }
.faq-list summary::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 50%;
  width: 11px;
  height: 11px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: translateY(-70%) rotate(45deg);
  transition: transform .28s var(--ease);
}
.faq-list details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq-list details p {
  padding: 0 52px 24px 4px;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--muted);
  max-width: 74ch;
}

/* ---------- Contact ---------- */
.section-contact {
  background: var(--paper-3);
  border-top: 1px solid var(--line);
}
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: 64px;
  align-items: start;
}
.contact-copy h2 {
  font-size: clamp(26px, 3.2vw, 40px);
  letter-spacing: -.035em;
  line-height: 1.25;
  margin-bottom: 22px;
}
.contact-copy .body-lg { color: var(--muted); max-width: 46ch; }
/* 业务电话：联系区块的主入口 */
.contact-phone {
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.contact-phone-label {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--accent-dark);
}
.contact-phone-num {
  font-size: clamp(32px, 3.6vw, 42px);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  transition: color .2s var(--ease);
}
.contact-phone-num:hover { color: var(--accent-dark); }
.contact-phone-note { font-size: 12.5px; color: var(--muted-2); }

.contact-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

.contact-card {
  font-style: normal;
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius);
  padding: 30px 28px;
  box-shadow: var(--shadow-lg);
}
.contact-card h3 {
  font-size: 16px;
  padding-bottom: 18px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line-light);
}
.contact-card dl > div {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
  font-size: 13.5px;
}
.contact-card dl > div:last-child { border-bottom: 0; }
.contact-card dt { color: rgba(255, 255, 255, .58); }
.contact-card dd { color: rgba(255, 255, 255, .92); line-height: 1.7; }
.contact-card a {
  color: var(--accent);
  border-bottom: 1px solid rgba(255, 106, 0, .35);
  transition: border-color .2s var(--ease);
  word-break: break-all;
}
.contact-card a:hover { border-bottom-color: var(--accent); }
.contact-sub { display: inline-block; margin-top: 2px; font-size: 12.5px; color: rgba(255, 255, 255, .55); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, .6);
  padding: 52px 0 40px;
  border-top: 1px solid rgba(255, 255, 255, .08);
}
.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px 56px;
  padding-bottom: 28px;
}
.footer-brand strong { display: block; color: #fff; font-size: 17px; margin-bottom: 8px; }
.footer-brand p { font-size: 13px; line-height: 1.8; max-width: 34ch; }
.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 10px 32px;
  font-size: 13.5px;
  padding-top: 2px;
}
.footer-nav a { transition: color .2s var(--ease); white-space: nowrap; }
.footer-nav a:hover { color: #fff; }
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 28px;
  font-size: 12.5px;
  line-height: 1.9;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, .08);
}
.footer-legal a { transition: color .2s var(--ease); }
.footer-legal a:hover { color: #fff; }
.footer-tel {
  color: rgba(255, 255, 255, .88);
  font-variant-numeric: tabular-nums;
  border-bottom: 1px solid rgba(255, 255, 255, .28);
}
.footer-tel:hover { color: #fff; border-bottom-color: var(--accent); }

/* ---------- Reveal animation ---------- */
/* 仅在 JS 可用时启用，保证无脚本/AI 抓取时内容始终可见 */
.js-reveal .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.js-reveal .reveal.is-in { opacity: 1; transform: none; }

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

/* ---------- Responsive ---------- */
@media (max-width: 1120px) {
  .header-cta .btn-ghost { display: none; }
}
@media (max-width: 1080px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-card { max-width: 460px; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hot-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
  .cap-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .honor-list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-top { gap: 26px 40px; }
}

@media (max-width: 860px) {
  .header-cta .btn-ghost { display: none; }
  .nav {
    position: fixed;
    inset: 76px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 8px 28px 20px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s var(--ease), transform .25s var(--ease);
    box-shadow: 0 24px 40px -24px rgba(15, 21, 18, .3);
  }
  .nav.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .nav a { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
  .nav a::after { display: none; }
  .nav-toggle { display: flex; }
  .header-inner { gap: 16px; }
  .header-cta { margin-left: auto; }
  .header-cta .btn { height: 40px; padding: 0 16px; font-size: 13px; }
}

@media (max-width: 720px) {
  .wrap { padding: 0 20px; }
  .section { padding: 64px 0; }
  .hero { padding-top: 44px; }
  .hero-inner { padding-bottom: 44px; }
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric { border-right: 1px solid var(--line); }
  .metric:nth-child(2n) { border-right: 0; }
  .metric:nth-child(n+3) { border-top: 1px solid var(--line); }
  .hot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .hot-body { padding: 12px 12px 14px; }
  .hot-body h3 { font-size: 12.5px; }
  .hot-price b { font-size: 18px; }
  .hot-more-inner { padding: 20px 18px; }
  .hot-more-inner strong { font-size: 28px; }
  .product-grid, .cap-grid, .steps, .custom-note { grid-template-columns: 1fr; }
  .honor-list { grid-template-columns: 1fr; }
  .brand-text em { display: none; }
  .header-cta .btn-solid { display: none; }
  .faq-list summary { font-size: 15px; padding-right: 40px; }
  .faq-list details p { padding-right: 8px; }
  .footer-top { flex-direction: column; gap: 22px; }
  .footer-nav { grid-template-columns: repeat(4, auto); gap: 8px 20px; }
  .footer-legal { flex-direction: column; gap: 10px; }
  .contact-card dl > div { grid-template-columns: 76px minmax(0, 1fr); }
  .profile > div { grid-template-columns: 80px minmax(0, 1fr); }
}

/* ---------- Print ---------- */
@media print {
  .site-header, .nav-toggle, .hero-actions, .contact-actions, .site-footer { display: none; }
  body { background: #fff; }
  .section { padding: 24px 0; break-inside: avoid; }
  .section-dark { background: #fff; color: #000; }
  .section-dark * { color: #000 !important; }
}