/*!
 * Imprestora Theme — Design System
 * Ink Navy #1B2A41 · White #FFFFFF · Slate #5A6673
 * Simple / Clean / Trustworthy / Practical
 */

/* ==========================================================================
   1. Tokens
   ========================================================================== */
:root {
  --ink: #1B2A41;
  --ink-90: #2b3c56;
  --ink-80: #3c4d66;
  --ink-05: #f1f3f6;
  --ink-08: #eaedf2;
  --white: #ffffff;
  --slate: #5A6673;
  --slate-70: #7a848f;
  --line: #e2e6ec;
  --line-soft: #eef1f5;
  --mist: #f7f8fa;
  --focus: #1B2A41;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;

  --step--1: 0.875rem;
  --step-0: 1rem;
  --step-1: 1.125rem;
  --step-2: 1.375rem;
  --step-3: 1.75rem;
  --step-4: 2.25rem;
  --step-5: 2.875rem;
  --step-6: 3.5rem;

  --radius: 4px;
  --radius-lg: 8px;
  --wrap: 1200px;
  --header-h: 76px;

  --shadow-sm: 0 1px 2px rgba(27, 42, 65, .05);
  --shadow-md: 0 6px 24px rgba(27, 42, 65, .07);
  --ease: cubic-bezier(.25, .8, .25, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.7;
  color: var(--slate);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg, video { max-width: 100%; height: auto; display: block; }
figure { margin: 0; }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--ink-80); }
ul, ol { margin: 0 0 1rem; padding-left: 1.25rem; }
li { margin-bottom: .35rem; }
p { margin: 0 0 1.15rem; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font);
  color: var(--ink);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: -.015em;
  margin: 0 0 .75rem;
}
h1 { font-size: var(--step-5); }
h2 { font-size: var(--step-4); }
h3 { font-size: var(--step-3); }
h4 { font-size: var(--step-2); }
h5 { font-size: var(--step-1); }
h6 { font-size: var(--step-0); }

:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ==========================================================================
   2. Layout
   ========================================================================== */
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.wrap--narrow { max-width: 820px; }
.wrap--tight { max-width: 680px; }

.section { padding: 88px 0; }
.section--tight { padding: 64px 0; }
.section--mist { background: var(--mist); }
.section--ink { background: var(--ink); color: #cfd6e0; }
.section--ink h1, .section--ink h2, .section--ink h3, .section--ink h4 { color: var(--white); }
.section--ink p { color: #b6c0cd; }
.section--ink a { color: var(--white); }

.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { margin-bottom: .6rem; }
.section-head .lede { font-size: var(--step-1); color: var(--slate); margin: 0; }
.section--ink .section-head .lede { color: #b6c0cd; }

.eyebrow {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: .75rem;
}
.section--ink .eyebrow { color: #8fa0b5; }

.grid { display: grid; gap: 28px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

.stack-sm > * + * { margin-top: 12px; }
.stack > * + * { margin-top: 20px; }

.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ==========================================================================
   3. Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font);
  font-size: .95rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: .01em;
  padding: 15px 26px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  text-align: center;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease), transform .18s var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary { background: var(--ink); color: var(--white); }
.btn--primary:hover { background: var(--ink-90); color: var(--white); }

.btn--outline { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn--outline:hover { background: var(--ink); color: var(--white); }

.btn--onink { background: var(--white); color: var(--ink); }
.btn--onink:hover { background: var(--ink-05); color: var(--ink); }
.section--ink .btn--onink { color: var(--ink); }

.btn--ghostink { background: transparent; color: var(--white); border-color: rgba(255,255,255,.45); }
.btn--ghostink:hover { background: rgba(255,255,255,.1); color: var(--white); }

.btn--sm { padding: 11px 18px; font-size: .875rem; }
.btn--block { width: 100%; }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }
.btn-row--center { justify-content: center; }

.link-arrow {
  font-weight: 600;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}
.link-arrow:hover { border-color: var(--ink); }
.link-arrow::after { content: "\2192"; transition: transform .18s var(--ease); }
.link-arrow:hover::after { transform: translateX(4px); }

/* ==========================================================================
   4. Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
}

.wordmark {
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -.02em;
  color: var(--ink);
  line-height: 1;
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}
.wordmark:hover { color: var(--ink); }
.wordmark .dot { color: var(--slate); }

/* 最终版组合标（图标 + 字标 + 标语） */
.brand-link { display: inline-flex; align-items: center; }
.brand-img { display: block; height: 54px; width: auto; }
.brand-img--sm { height: 40px; }
.footer-brand .brand-img--footer { height: 48px; margin-bottom: 16px; }

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.primary-nav li { margin: 0; }
.primary-nav a {
  font-size: .95rem;
  font-weight: 500;
  color: var(--slate);
  padding: 6px 0;
  position: relative;
}
.primary-nav a:hover,
.primary-nav .current-menu-item > a,
.primary-nav .current-menu-ancestor > a { color: var(--ink); }
.primary-nav .current-menu-item > a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: var(--ink);
}

.header-actions { display: flex; align-items: center; gap: 16px; }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 0;
  position: relative;
}
.nav-toggle span {
  display: block;
  width: 20px; height: 1.5px;
  background: var(--ink);
  margin: 4px auto;
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

.topbar {
  background: var(--ink);
  color: #b6c0cd;
  font-size: .8125rem;
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 40px;
}
.topbar a { color: var(--white); }
.topbar a:hover { color: #cfd6e0; }
.topbar__links { display: flex; gap: 20px; list-style: none; margin: 0; padding: 0; }
.topbar__links li { margin: 0; }

/* ==========================================================================
   5. Hero
   ========================================================================== */
.hero { padding: 96px 0 84px; background: var(--white); }
.hero--ink { background: var(--ink); color: #cfd6e0; }
.hero--ink h1 { color: var(--white); }
.hero--ink .hero__lede { color: #b6c0cd; }
.hero__inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: center; }
.hero h1 { font-size: var(--step-6); letter-spacing: -.025em; margin-bottom: 1.1rem; }
.hero__lede { font-size: var(--step-1); color: var(--slate); max-width: 620px; margin-bottom: 2rem; }
.hero__art { position: relative; }
.hero__art img { border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }

.hero__panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.hero__panel h2 { font-size: var(--step-2); }

.hero-stats { display: flex; flex-wrap: wrap; gap: 40px; margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--line-soft); list-style: none; padding-left: 0; }
.section--ink .hero-stats, .hero--ink .hero-stats { border-color: rgba(255,255,255,.15); }
.hero-stats li { margin: 0; }
.hero-stats strong { display: block; font-size: var(--step-3); color: var(--ink); line-height: 1.1; }
.hero--ink .hero-stats strong { color: var(--white); }
.hero-stats span { font-size: .8125rem; color: var(--slate); }
.hero--ink .hero-stats span { color: #8fa0b5; }

/* ==========================================================================
   6. Trust / logo strip
   ========================================================================== */
.trustbar { border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); padding: 26px 0; background: var(--white); }
.trustbar__inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.trustbar__label { font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: var(--slate-70); font-weight: 700; }
.trustbar__items { display: flex; align-items: center; gap: 34px; flex-wrap: wrap; list-style: none; margin: 0; padding: 0; }
.trustbar__items li { margin: 0; font-size: .9375rem; font-weight: 600; color: var(--ink); display: flex; align-items: center; gap: 8px; }
.trustbar__items svg { width: 16px; height: 16px; flex: none; }

/* ==========================================================================
   7. Cards
   ========================================================================== */
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease), transform .18s var(--ease);
}
.card:hover { border-color: var(--ink); box-shadow: var(--shadow-sm); }
.card h3 { font-size: var(--step-2); }
.card p:last-child { margin-bottom: 0; }
.card__foot { margin-top: auto; padding-top: 22px; }
.card__num {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--slate-70);
  margin-bottom: 14px;
}
.card--plain { border: 0; padding: 0; background: transparent; }
.card--plain:hover { border: 0; box-shadow: none; }

.solution-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.solution-card:hover { border-color: var(--ink); box-shadow: var(--shadow-md); }
.solution-card__media { aspect-ratio: 4 / 3; overflow: hidden; background: var(--mist); }
.solution-card__media img { width: 100%; height: 100%; object-fit: cover; }
.solution-card__body { padding: 26px 28px 30px; }
.solution-card__body h3 { font-size: var(--step-2); margin-bottom: .5rem; }
.solution-card__meta { font-size: .8125rem; color: var(--slate-70); margin-bottom: 1rem; }

/* ==========================================================================
   8. Products
   ========================================================================== */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding-bottom: 24px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--line);
}
.filter-chips { display: flex; gap: 10px; flex-wrap: wrap; list-style: none; margin: 0; padding: 0; }
.filter-chips li { margin: 0; }
.filter-chips a {
  display: inline-block;
  font-size: .875rem;
  font-weight: 600;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--slate);
}
.filter-chips a:hover { border-color: var(--ink); color: var(--ink); }
.filter-chips .is-active a { background: var(--ink); border-color: var(--ink); color: var(--white); }
.result-count { font-size: .875rem; color: var(--slate-70); }

.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.product-grid--3 { grid-template-columns: repeat(3, 1fr); }

.product-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  display: flex;
  flex-direction: column;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.product-card:hover { border-color: var(--ink); box-shadow: var(--shadow-sm); }
.product-card__media { aspect-ratio: 1 / 1; background: var(--mist); overflow: hidden; }
.product-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s var(--ease); }
.product-card:hover .product-card__media img { transform: scale(1.04); }
.product-card__body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.product-card__line { font-size: .6875rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--slate-70); margin-bottom: 8px; }
.product-card__title { font-size: var(--step-1); font-weight: 600; margin: 0 0 .5rem; }
.product-card__title a { color: var(--ink); }
.product-card__excerpt { font-size: .9375rem; margin-bottom: 1rem; }
.product-card__foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.product-card__moq { font-size: .8125rem; color: var(--slate-70); }

/* Product single */
.pdp { padding: 40px 0 88px; }
.pdp__grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: start; }
.pdp__gallery { position: sticky; top: calc(var(--header-h) + 24px); }
.pdp__main-img {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--mist);
  aspect-ratio: 1 / 1;
}
.pdp__main-img img { width: 100%; height: 100%; object-fit: contain; }
.pdp__thumbs { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; margin-top: 12px; }
.pdp__thumb {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  padding: 0;
  cursor: pointer;
  overflow: hidden;
  aspect-ratio: 1 / 1;
}
.pdp__thumb img { width: 100%; height: 100%; object-fit: cover; }
.pdp__thumb.is-active { border-color: var(--ink); }
.pdp__thumb:hover { border-color: var(--slate); }

.pdp__title { font-size: var(--step-4); margin-bottom: .4rem; }
.pdp__sku { font-size: .8125rem; color: var(--slate-70); letter-spacing: .04em; }
.pdp__summary { font-size: var(--step-1); margin: 1.25rem 0 1.5rem; }
.pdp__price-note {
  background: var(--mist);
  border-left: 3px solid var(--ink);
  padding: 18px 22px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 1.75rem;
  font-size: .9375rem;
}
.pdp__price-note strong { color: var(--ink); }

.kv-list { list-style: none; margin: 0 0 1.5rem; padding: 0; }
.kv-list li { display: flex; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line-soft); font-size: .9375rem; margin: 0; }
.kv-list li:first-child { border-top: 1px solid var(--line-soft); }
.kv-list dt, .kv-list .k { flex: 0 0 44%; color: var(--slate); }
.kv-list .v { color: var(--ink); font-weight: 600; }

.badge {
  display: inline-block;
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 3px;
  background: var(--ink-05);
  color: var(--ink);
}
.badge--line { background: transparent; border: 1px solid var(--line); color: var(--slate); }
.badge--onink { background: rgba(255,255,255,.14); color: var(--white); }

.tabs { margin-top: 72px; border-top: 1px solid var(--line); }
.tabs__nav { display: flex; gap: 4px; border-bottom: 1px solid var(--line); overflow-x: auto; }
.tabs__btn {
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 16px 20px;
  font-family: var(--font);
  font-size: .9375rem;
  font-weight: 600;
  color: var(--slate);
  cursor: pointer;
  white-space: nowrap;
}
.tabs__btn[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--ink); }
.tabs__panel { padding: 36px 0 0; display: none; }
.tabs__panel.is-active { display: block; }

/* Data table */
.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: .9375rem; }
.data-table th, .data-table td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.data-table thead th { font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--slate-70); border-bottom: 1px solid var(--ink); }
.data-table td { color: var(--ink); }
.data-table tbody tr:hover { background: var(--mist); }
.data-table .num { font-variant-numeric: tabular-nums; }
.data-table td.tbd { color: var(--slate-70); font-style: italic; }

.tier-table { width: 100%; border-collapse: collapse; font-size: .9375rem; }
.tier-table th, .tier-table td { padding: 14px 18px; border: 1px solid var(--line); text-align: left; }
.tier-table thead th { background: var(--ink); color: var(--white); font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; border-color: var(--ink); }
.tier-table td { color: var(--ink); }
.tier-table td.tbd { color: var(--slate-70); }

/* ==========================================================================
   9b. Media list (Blog / Media Room)
   ========================================================================== */
.media-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.media-list li { margin: 0; padding: 28px 0; border-bottom: 1px solid var(--line); }
.media-list__date { display: block; font-size: .8125rem; letter-spacing: .04em; color: var(--slate-70); margin-bottom: 8px; }
.media-list h3 { font-size: var(--step-1); margin-bottom: .4rem; }
.media-list h3 a { color: var(--ink); }
.media-list h3 a:hover { color: var(--slate); }
.media-list p { margin: 0; font-size: .9375rem; color: var(--slate); }

.pager { margin-top: 40px; }
.pager .nav-links { display: flex; gap: 12px; align-items: center; }
.pager .page-numbers, .pager a.page-numbers {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 40px; height: 40px; padding: 0 12px;
  border: 1px solid var(--line); border-radius: var(--radius);
  font-size: .875rem; color: var(--ink);
}
.pager .page-numbers.current { background: var(--ink); border-color: var(--ink); color: var(--white); }

/* ==========================================================================
   9. Steps / process
   ========================================================================== */
.process-map { margin-top: 56px; overflow-x: auto; }
.process-map svg { display: block; width: 100%; min-width: 680px; height: auto; }
.process-map text { font-family: inherit; }
.section--ink .process-map { padding-bottom: 4px; }

.process-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.process-list li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  margin: 0;
}
.process-list .n { font-size: .8125rem; font-weight: 700; letter-spacing: .1em; color: var(--slate-70); padding-top: 4px; }
.process-list h3 { font-size: var(--step-2); margin-bottom: .35rem; }
.process-list p { margin: 0; }

/* ==========================================================================
   10. Value / feature blocks
   ========================================================================== */
.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.feature--reverse .feature__media { order: 2; }
.feature__media img { border-radius: var(--radius-lg); width: 100%; }
.feature__media { border-radius: var(--radius-lg); overflow: hidden; background: var(--mist); }

.checklist { list-style: none; margin: 0 0 1.5rem; padding: 0; }
.checklist li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 12px;
  font-size: var(--step-0);
  color: var(--slate);
}
.checklist li::before {
  content: "\2713";
  position: absolute;
  left: 0; top: 0;
  color: var(--ink);
  font-weight: 700;
}
.section--ink .checklist li::before { color: var(--white); }

.compare { width: 100%; border-collapse: collapse; font-size: .9375rem; }
.compare th, .compare td { padding: 16px 18px; border-bottom: 1px solid var(--line); text-align: left; }
.compare thead th { color: var(--ink); font-size: 1rem; }
.compare tbody th { font-weight: 600; color: var(--ink); width: 26%; }
.compare .is-us { background: var(--ink-05); }
.compare .is-us th { border-left: 3px solid var(--ink); }

.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { border-left: 2px solid var(--ink); padding-left: 18px; }
.stat strong { display: block; font-size: var(--step-4); color: var(--ink); line-height: 1.05; }
.section--ink .stat { border-color: rgba(255,255,255,.4); }
.section--ink .stat strong { color: var(--white); }
.stat span { font-size: .875rem; color: var(--slate); }
.section--ink .stat span { color: #8fa0b5; }

/* ==========================================================================
   11. FAQ accordion
   ========================================================================== */
.faq { border-top: 1px solid var(--line); }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__q {
  width: 100%;
  background: none;
  border: 0;
  padding: 22px 44px 22px 0;
  text-align: left;
  font-family: var(--font);
  font-size: var(--step-1);
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  position: relative;
}
.faq__q::after {
  content: "+";
  position: absolute;
  right: 4px; top: 50%;
  transform: translateY(-50%);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--slate);
}
.faq__q[aria-expanded="true"]::after { content: "\2212"; }
.faq__a { display: none; padding: 0 44px 24px 0; }
.faq__a.is-open { display: block; }
.faq__a p:last-child { margin-bottom: 0; }

/* ==========================================================================
   12. Forms
   ========================================================================== */
.form-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: .8125rem; font-weight: 600; color: var(--ink); }
.field .req { color: var(--slate-70); font-weight: 400; }
.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field input[type="number"],
.field select,
.field textarea {
  font-family: var(--font);
  font-size: .9375rem;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  width: 100%;
  transition: border-color .18s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(27,42,65,.08);
}
.field textarea { min-height: 120px; resize: vertical; }
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235A6673' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
.field .hint { font-size: .8125rem; color: var(--slate-70); }
.form-note { font-size: .8125rem; color: var(--slate-70); margin: 18px 0 0; }

.form-msg { padding: 16px 18px; border-radius: var(--radius); font-size: .9375rem; margin-bottom: 22px; }
.form-msg--ok { background: var(--ink-05); border-left: 3px solid var(--ink); color: var(--ink); }
.form-msg--err { background: #fdf1f1; border-left: 3px solid #b4544f; color: #8a3f3b; }

.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.contact-card { border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 26px; background: var(--white); }
.contact-card h3 { font-size: var(--step-1); margin-bottom: .35rem; }
.contact-card p { font-size: .9375rem; margin: 0; }
.contact-card a { font-weight: 600; }

/* ==========================================================================
   13. CTA band
   ========================================================================== */
.cta-band { background: var(--ink); color: #cfd6e0; padding: 84px 0; }
.cta-band h2 { color: var(--white); font-size: var(--step-4); max-width: 780px; }
.cta-band p { color: #b6c0cd; max-width: 640px; }
.cta-band__inner { display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; }

/* ==========================================================================
   14. Footer
   ========================================================================== */
.site-footer { background: var(--ink); color: #aab5c3; padding: 72px 0 0; font-size: .9375rem; }
.site-footer h4 { color: var(--white); font-size: .8125rem; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 18px; }
.site-footer a { color: #dfe4ea; }
.site-footer a:hover { color: var(--white); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 56px; }
.footer-brand .wordmark { color: var(--white); font-size: 1.5rem; margin-bottom: 14px; }
.footer-brand .wordmark .dot { color: #6c7d92; }
.footer-brand p { max-width: 340px; color: #aab5c3; }
.footer-list { list-style: none; margin: 0; padding: 0; }
.footer-list li { margin-bottom: 10px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: .8125rem;
  color: #8a97a7;
}
.footer-bottom a { color: #aab5c3; }
.footer-bottom ul { display: flex; gap: 20px; list-style: none; margin: 0; padding: 0; }
.footer-bottom li { margin: 0; }

/* ==========================================================================
   15. Content / misc
   ========================================================================== */
.page-hero { background: var(--ink); color: #cfd6e0; padding: 72px 0 64px; }
.page-hero h1 { color: var(--white); font-size: var(--step-5); margin-bottom: .6rem; }
.page-hero p { color: #b6c0cd; font-size: var(--step-1); max-width: 680px; margin: 0; }

.breadcrumbs { font-size: .8125rem; color: var(--slate-70); padding: 20px 0; }
.breadcrumbs a { color: var(--slate); }
.breadcrumbs ol { list-style: none; margin: 0; padding: 0; display: flex; gap: 8px; flex-wrap: wrap; }
.breadcrumbs li { margin: 0; }
.breadcrumbs li + li::before { content: "/"; margin-right: 8px; color: var(--line); }

.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 56px; list-style: none; padding: 0; }
.pagination li { margin: 0; }
.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px; height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: .9375rem;
  font-weight: 600;
}
.pagination .current span { background: var(--ink); border-color: var(--ink); color: var(--white); }

.notice {
  border: 1px dashed var(--line);
  border-left: 3px solid var(--slate);
  background: var(--mist);
  padding: 18px 22px;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: .875rem;
  color: var(--slate);
}

.entry-content h2 { margin-top: 2.5rem; }
.entry-content h3 { margin-top: 2rem; }
.entry-content > :last-child { margin-bottom: 0; }

.empty-state { text-align: center; padding: 80px 0; }

/* Mobile drawer */
.nav-drawer {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--white);
  padding: 24px;
  overflow-y: auto;
}
.nav-drawer.is-open { display: block; }
.nav-drawer__head { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.nav-drawer ul { list-style: none; margin: 24px 0; padding: 0; }
.nav-drawer li { border-bottom: 1px solid var(--line-soft); margin: 0; }
.nav-drawer a { display: block; padding: 16px 0; font-size: 1.125rem; font-weight: 600; color: var(--ink); }
.nav-drawer .btn { margin-top: 20px; }
.nav-close { border: 1px solid var(--line); background: var(--white); width: 44px; height: 44px; border-radius: var(--radius); cursor: pointer; font-size: 1.25rem; line-height: 1; color: var(--ink); }
body.nav-open { overflow: hidden; }

/* ==========================================================================
   16. Responsive
   ========================================================================== */
@media (max-width: 1080px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero__inner, .pdp__grid, .feature { gap: 40px; }
}

@media (max-width: 900px) {
  :root { --step-5: 2.375rem; --step-6: 2.75rem; }
  body { font-size: 16px; }
  .section { padding: 64px 0; }
  .primary-nav, .header-actions .btn { display: none; }
  .nav-toggle { display: block; }
  .hero__inner, .pdp__grid, .feature { grid-template-columns: 1fr; }
  .pdp__gallery { position: static; }
  .feature--reverse .feature__media { order: 0; }
  .grid-3, .grid-4, .steps, .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
  .product-grid, .product-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .cta-band__inner { grid-template-columns: 1fr; }
  .process-list li { grid-template-columns: 44px 1fr; gap: 16px; }
  .pdp__thumbs { grid-template-columns: repeat(5, 1fr); }
}

@media (max-width: 620px) {
  :root { --step-4: 1.875rem; --step-5: 2rem; --step-6: 2.25rem; }
  .wrap { padding: 0 18px; }
  .hero { padding: 56px 0 48px; }
  .grid-3, .grid-4, .stat-grid, .product-grid, .product-grid--3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-card { padding: 24px; }
  .trustbar__inner { gap: 16px; }
  .pdp__thumbs { grid-template-columns: repeat(4, 1fr); }
  .tabs__nav { gap: 0; }
  .tabs__btn { padding: 14px 14px; }
  .process-map .pm-cap { display: none; }

  /* 窄屏：顶栏只留邮箱，避免折行；组合标按屏宽收缩 */
  .topbar__inner > span { display: none; }
  .topbar__inner { justify-content: flex-end; min-height: 34px; }
  .topbar__links li:first-child { display: none; }
  .brand-img { height: 42px; }
  .brand-img--sm { height: 32px; }
  .footer-brand .brand-img--footer { height: 40px; }
  .hero-stats { gap: 24px 28px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

@media print {
  .site-header, .site-footer, .cta-band, .nav-drawer { display: none; }
}

/* ==========================================================================
   16. Cookie consent
   ========================================================================== */
.cc[hidden] { display: none; }

.cc {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 90;
  background: var(--ink);
  color: var(--white);
  border-top: 1px solid rgba(255, 255, 255, .12);
  box-shadow: 0 -8px 32px rgba(27, 42, 65, .14);
}
.cc:focus { outline: none; }
.cc:focus-visible { outline: 2px solid var(--white); outline-offset: -4px; }

.cc__inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cc__title { margin: 0 0 4px; font-size: var(--step-0); color: var(--white); }
.cc__text { margin: 0; font-size: .875rem; line-height: 1.6; color: #b6c0cd; max-width: 76ch; }
.cc__text a { color: var(--white); text-decoration: underline; }
.cc__actions { display: flex; gap: 10px; flex-wrap: wrap; }
.cc__actions .btn { padding: 11px 20px; font-size: .875rem; }

.cc--noscript { position: static; box-shadow: none; }
.cc--noscript .cc__inner { padding: 12px 24px; }

/* Footer legal row: copyright, privacy link, cookie settings control */
.footer-legal {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 20px;
}
.footer-linklike {
  background: none;
  border: 0;
  padding: 0;
  margin: 0;
  font: inherit;
  color: #aab5c3;
  cursor: pointer;
  text-decoration: underline;
}
.footer-linklike:hover { color: var(--white); }

@media (max-width: 620px) {
  .cc__inner { padding: 16px 20px; gap: 14px; }
  .cc__actions { width: 100%; }
  .cc__actions .btn { flex: 1 1 auto; justify-content: center; }
}

@media print {
  .cc { display: none !important; }
}