/* shandianyx.com · 对齐 Proxy-Cheap 视觉（主色 #0452fb） */
:root {
  --pc-blue: #0452fb;
  --pc-blue-dark: #0342c9;
  --pc-blue-700: #023197;
  --pc-blue-soft: #e6eeff;
  --pc-blue-100: #cddcfe;
  --pc-text: #011032;
  --pc-muted: #5a6b85;
  --pc-gray: #7a8699;
  --pc-border: #e6edf7;
  --pc-bg: #ffffff;
  --pc-bg-soft: #f6f9ff;
  --pc-radius: 12px;
  --pc-radius-sm: 8px;
  --pc-shadow: 0 8px 28px rgba(4, 82, 251, 0.1);
  --pc-wrap: 1180px;
  --pc-header-h: 80px;
  --pc-font: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body.pc-body {
  margin: 0;
  font-family: var(--pc-font);
  color: var(--pc-text);
  background: var(--pc-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
.pc-wrap { width: min(100% - 40px, var(--pc-wrap)); margin-inline: auto; }

/* Buttons */
.pc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  transition: background .2s, color .2s, box-shadow .2s, border-color .2s;
}
.pc-btn--primary { background: var(--pc-blue); color: #fff; }
.pc-btn--primary:hover { background: var(--pc-blue-dark); box-shadow: 0 8px 20px rgba(4, 82, 251, .28); }
.pc-btn--ghost {
  background: var(--pc-blue-soft);
  color: var(--pc-blue);
}
.pc-btn--ghost:hover { background: var(--pc-blue-100); }
.pc-btn--outline {
  background: #fff;
  color: var(--pc-text);
  border: 1px solid var(--pc-border);
}
.pc-btn--outline:hover { border-color: var(--pc-blue); color: var(--pc-blue); }
.pc-btn--sm { height: 40px; padding: 0 16px; font-size: 14px; border-radius: 8px; }
.pc-btn--lg { height: 52px; padding: 0 28px; font-size: 16px; }
.pc-btn--block { width: 100%; }

/* Header */
.pc-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--pc-header-h);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
}
.pc-header.is-scrolled {
  border-bottom-color: var(--pc-border);
  box-shadow: 0 4px 20px rgba(1, 16, 50, .04);
}
.pc-header__inner {
  height: var(--pc-header-h);
  display: flex;
  align-items: center;
  gap: 20px;
  position: relative;
}
.pc-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 22px;
  color: var(--pc-text);
  flex-shrink: 0;
}
.pc-logo img { width: 30px; height: 26px; }
.pc-nav { margin-left: 12px; flex: 1; }
.pc-nav > ul { display: flex; align-items: center; gap: 4px; }
.pc-nav__link,
.pc-nav > ul > li > button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  font-size: 20px;
  font-weight: 600;
  color: var(--pc-text);
  border-radius: 8px;
}
.pc-nav__link:hover,
.pc-nav > ul > li > button:hover { color: var(--pc-blue); background: var(--pc-blue-soft); }
.pc-nav__chev { width: 11px; height: 7px; opacity: .55; }
.pc-header__actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; margin-left: auto; }
/* 顶栏按钮单独放大，不影响页内其它 sm 按钮 */
.pc-header__actions .pc-btn {
  height: 48px;
  padding: 0 24px;
  font-size: 20px;
  border-radius: 10px;
}
.pc-toggle {
  display: none;
  width: 40px;
  height: 40px;
  margin-left: auto;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}
.pc-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--pc-text);
  border-radius: 2px;
  transition: transform .2s, opacity .2s;
}
.pc-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.pc-toggle.open span:nth-child(2) { opacity: 0; }
.pc-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Dropdown */
.pc-nav > ul > li { position: relative; }
/* Mega 相对顶栏定位，避免面板宽于触发项时悬停断层 */
.pc-nav > ul > li[data-mega] { position: static; }
.pc-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  /* 透明顶区作悬停桥，消除下移断层 */
  padding-top: 10px;
  background: transparent;
  border: none;
  box-shadow: none;
  z-index: 50;
}
.pc-dropdown__panel {
  width: 100%;
  background: #fff;
  border: 1px solid var(--pc-border);
  border-radius: 12px;
  box-shadow: var(--pc-shadow);
  padding: 16px;
}
.pc-dropdown--mega {
  left: 0;
  right: auto;
  transform: none;
  min-width: 640px;
  max-width: min(720px, calc(100% - 40px));
}
.pc-dropdown__label {
  margin: 0 0 10px;
  padding: 0 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--pc-gray);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.pc-dropdown__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}
.pc-dropdown__list { display: flex; flex-direction: column; gap: 2px; }
.pc-dropdown__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 12px;
  border-radius: 8px;
}
.pc-dropdown__item:hover { background: var(--pc-bg-soft); }
.pc-dropdown__item strong { font-size: 14px; font-weight: 600; color: var(--pc-text); }
.pc-dropdown__item span { font-size: 12px; color: var(--pc-muted); }
[data-dropdown].is-open > .pc-dropdown { display: block; }
@media (min-width: 901px) {
  [data-dropdown]:hover > .pc-dropdown,
  [data-dropdown].is-open > .pc-dropdown { display: block; }
}

/* Hero */
.pc-hero {
  padding: 72px 0 48px;
  text-align: center;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(4, 82, 251, .08), transparent 60%),
    var(--pc-bg);
}
.pc-hero__rating {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--pc-text);
}
.pc-hero__stars { color: #f5a623; letter-spacing: 2px; }
.pc-hero__g2 { color: #ff492c; letter-spacing: 1px; }
.pc-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
}
.pc-hero__lead {
  margin: 0 auto 28px;
  max-width: 560px;
  font-size: 18px;
  color: var(--pc-muted);
}
.pc-hero__cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
}
.pc-hero__note {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--pc-gray);
}

/* Clients band */
.pc-clients {
  padding: 40px 0 48px;
  text-align: center;
  overflow: hidden;
}
.pc-clients h2 {
  margin: 0 0 28px;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -.02em;
}
/* 「满意客户」橙色高亮，对齐目标站 */
.pc-clients h2 mark {
  display: inline-block;
  padding: 2px 12px;
  margin-left: 4px;
  background: #ff9f1a;
  color: var(--pc-text);
  border-radius: 8px;
  font-style: normal;
}
.pc-clients__marquee {
  max-width: 960px;
  margin: 0 auto;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.pc-clients__track {
  display: flex;
  align-items: center;
  gap: 48px;
  width: max-content;
  animation: pc-clients-scroll 28s linear infinite;
}
.pc-clients__track img {
  height: 32px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  filter: grayscale(1);
  opacity: .72;
  flex-shrink: 0;
}
@keyframes pc-clients-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce) {
  .pc-clients__track { animation: none; flex-wrap: wrap; justify-content: center; width: auto; }
  .pc-clients__marquee { mask-image: none; -webkit-mask-image: none; }
}

/* Section common */
.pc-section { padding: 64px 0; }
.pc-section--soft { background: var(--pc-bg-soft); }
.pc-section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
}
.pc-section-head h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 800;
  letter-spacing: -.02em;
}
.pc-section-head p {
  margin: 0;
  font-size: 16px;
  color: var(--pc-muted);
}

/* Product pricing tabs */
.pc-ptabs {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  overflow-y: hidden; /* 禁止纵向滚动条（overflow-x 时易误出） */
  border-bottom: 1px solid var(--pc-border);
  margin-bottom: 28px;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}
.pc-ptabs__btn {
  flex: 0 0 auto;
  padding: 14px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--pc-gray);
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  margin-bottom: -1px;
}
.pc-ptabs__btn:hover { color: var(--pc-text); }
.pc-ptabs__btn.is-active {
  color: var(--pc-text);
  border-bottom-color: var(--pc-blue);
}
.pc-ppanel { display: none; }
.pc-ppanel.is-active { display: block; }
.pc-price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.pc-price-card {
  display: flex;
  flex-direction: column;
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--pc-border);
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(1, 16, 50, .04);
}
.pc-price-card__plan {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
}
.pc-price-card__price {
  margin: 0;
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.1;
}
.pc-price-card__unit {
  margin: 6px 0 20px;
  font-size: 14px;
  color: var(--pc-muted);
}
.pc-price-card .pc-btn { margin-bottom: 20px; }
.pc-price-card ul { display: flex; flex-direction: column; gap: 10px; }
.pc-price-card li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--pc-text);
}
.pc-price-card li::before {
  content: "";
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 1px;
  border-radius: 50%;
  background: var(--pc-blue) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath fill='none' stroke='%23fff' stroke-width='2' d='M2.5 6l2.5 2.5 4.5-5'/%3E%3C/svg%3E") center/10px no-repeat;
}
.pc-secure {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 28px;
  font-size: 13px;
  color: var(--pc-muted);
}

/* Locations grid */
.pc-loc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.pc-loc-card {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 72px;
  padding: 20px 24px;
  background: #fff;
  border: 1px solid var(--pc-border);
  border-radius: 14px;
  font-weight: 700;
  font-size: 17px;
  transition: border-color .2s, box-shadow .2s;
}
.pc-loc-card:hover {
  border-color: var(--pc-blue-100);
  box-shadow: var(--pc-shadow);
}
.pc-loc-card img {
  width: 40px;
  height: 30px;
  border-radius: 4px;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(0,0,0,.06);
  flex-shrink: 0;
}
.pc-loc-card--all {
  justify-content: center;
  color: var(--pc-blue);
  background: var(--pc-blue-soft);
  border-color: transparent;
  font-size: 17px;
}
.pc-loc-request {
  margin: 20px 0 0;
  text-align: center;
  font-size: 14px;
  color: var(--pc-muted);
}
.pc-loc-request a { color: var(--pc-blue); font-weight: 600; }

/* Testimonials */
.pc-reviews {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.pc-review {
  padding: 24px;
  background: #fff;
  border: 1px solid var(--pc-border);
  border-radius: 16px;
}
.pc-review__text {
  margin: 0 0 20px;
  font-size: 15px;
  color: var(--pc-text);
  line-height: 1.65;
}
.pc-review__author { font-weight: 700; font-size: 14px; }
.pc-review__role { font-size: 13px; color: var(--pc-muted); }
.pc-kpi-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 36px;
}
.pc-kpi {
  text-align: center;
  padding: 24px 16px;
  background: #fff;
  border: 1px solid var(--pc-border);
  border-radius: 16px;
}
.pc-kpi__label { font-size: 13px; color: var(--pc-muted); margin-bottom: 6px; }
.pc-kpi__value { font-size: 22px; font-weight: 800; color: var(--pc-blue); }

/* Features */
.pc-feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
/* 定价页等四卡区块：两行两列，卡片更大 */
.pc-feat-grid--2x2 {
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}
.pc-feat-grid--2x2 .pc-feat {
  padding: 36px 32px;
  min-height: 180px;
}
.pc-feat-grid--2x2 .pc-feat h3 {
  font-size: 20px;
}
.pc-feat-grid--2x2 .pc-feat p {
  font-size: 15px;
  line-height: 1.65;
}
.pc-feat {
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--pc-border);
  border-radius: 16px;
}
.pc-feat__icon {
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  border-radius: 10px;
  background: var(--pc-blue-soft);
  color: var(--pc-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
}
.pc-feat h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
}
.pc-feat p {
  margin: 0;
  font-size: 14px;
  color: var(--pc-muted);
}
.pc-feat-cta {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 36px;
}

/* Product cards */
.pc-prod-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.pc-prod-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--pc-border);
  border-radius: 16px;
  transition: border-color .2s, box-shadow .2s;
}
.pc-prod-card:hover {
  border-color: var(--pc-blue-100);
  box-shadow: var(--pc-shadow);
}
.pc-prod-card h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}
.pc-prod-card p {
  margin: 0;
  font-size: 14px;
  color: var(--pc-muted);
  flex: 1;
}
.pc-prod-card__price {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 8px;
}
.pc-prod-card__price strong {
  font-size: 22px;
  font-weight: 800;
  color: var(--pc-text);
}
.pc-prod-card__price del {
  font-size: 14px;
  color: var(--pc-gray);
}
.pc-prod-card__badge {
  font-size: 12px;
  font-weight: 700;
  color: #0a7a3e;
  background: #e8f8ef;
  padding: 2px 8px;
  border-radius: 999px;
}

/* SOCKS5 points */
.pc-socks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.pc-socks-item {
  padding: 20px;
  border-radius: 12px;
  background: var(--pc-bg-soft);
}
.pc-socks-item h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
}
.pc-socks-item p {
  margin: 0;
  font-size: 13px;
  color: var(--pc-muted);
}

/* Use cases */
.pc-use-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.pc-use-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--pc-border);
  border-radius: 16px;
  transition: border-color .2s, box-shadow .2s;
}
.pc-use-card:hover {
  border-color: var(--pc-blue-100);
  box-shadow: var(--pc-shadow);
}
.pc-use-card h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
}
.pc-use-card p {
  margin: 0;
  font-size: 14px;
  color: var(--pc-muted);
  flex: 1;
}
.pc-use-card__more {
  font-size: 14px;
  font-weight: 600;
  color: var(--pc-blue);
}

/* FAQ */
.pc-faq { max-width: 800px; margin: 0 auto; }
.pc-faq-item {
  border-bottom: 1px solid var(--pc-border);
}
.pc-faq-item__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 4px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--pc-text);
}
.pc-faq-item__q::after {
  content: "+";
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--pc-blue-soft);
  color: var(--pc-blue);
  font-size: 18px;
  font-weight: 500;
  transition: transform .2s;
}
.pc-faq-item.is-open .pc-faq-item__q::after {
  content: "−";
}
.pc-faq-item__a {
  display: none;
  padding: 0 4px 18px;
  font-size: 15px;
  color: var(--pc-muted);
  line-height: 1.7;
}
.pc-faq-item.is-open .pc-faq-item__a { display: block; }

/* Bottom CTA */
.pc-cta {
  padding: 72px 0;
  text-align: center;
  background:
    linear-gradient(180deg, var(--pc-blue-700) 0%, var(--pc-blue) 100%);
  color: #fff;
}
.pc-cta h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 800;
}
.pc-cta p {
  margin: 0 auto 28px;
  max-width: 520px;
  opacity: .9;
}
.pc-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.pc-cta .pc-btn--primary {
  background: #fff;
  color: var(--pc-blue);
}
.pc-cta .pc-btn--primary:hover {
  background: var(--pc-blue-soft);
  box-shadow: none;
}
.pc-cta .pc-btn--outline {
  background: transparent;
  border-color: rgba(255,255,255,.45);
  color: #fff;
}
.pc-cta .pc-btn--outline:hover {
  background: rgba(255,255,255,.1);
  border-color: #fff;
  color: #fff;
}

/* Footer */
.pc-footer {
  padding: 56px 0 24px;
  background: #011032;
  color: rgba(255,255,255,.78);
  font-size: 14px;
}
.pc-footer__top {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.pc-footer .pc-logo { color: #fff; margin-bottom: 16px; }
.pc-footer__emails {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.pc-footer__emails a:hover { color: #fff; }
.pc-footer__cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(160px, 220px));
  gap: 40px;
  justify-content: start;
}
.pc-footer h5 {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.pc-footer ul { display: flex; flex-direction: column; gap: 8px; }
.pc-footer a:hover { color: #fff; }
.pc-footer__bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 20px;
  font-size: 13px;
  color: rgba(255,255,255,.5);
}

/* Responsive */
@media (max-width: 1024px) {
  .pc-price-grid { grid-template-columns: 1fr; max-width: 400px; margin-inline: auto; }
  .pc-loc-grid { grid-template-columns: repeat(2, 1fr); }
  .pc-reviews,
  .pc-feat-grid,
  .pc-use-grid,
  .pc-socks-grid,
  .pc-kpi-row { grid-template-columns: 1fr 1fr; }
  .pc-prod-grid { grid-template-columns: 1fr; }
  .pc-footer__cols { grid-template-columns: repeat(2, minmax(140px, 200px)); }
  .pc-dropdown--mega { min-width: 480px; }
}
@media (max-width: 900px) {
  .pc-toggle { display: flex; }
  .pc-nav {
    display: none;
    position: absolute;
    top: var(--pc-header-h);
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--pc-border);
    padding: 12px 20px 20px;
    max-height: calc(100vh - var(--pc-header-h));
    overflow-y: auto;
    margin: 0;
  }
  .pc-nav.open { display: block; }
  .pc-nav > ul { flex-direction: column; align-items: stretch; }
  .pc-nav__link,
  .pc-nav > ul > li > button {
    width: 100%;
    justify-content: space-between;
    padding: 14px 12px;
  }
  .pc-dropdown,
  .pc-dropdown--mega {
    position: static;
    transform: none;
    min-width: 0;
    box-shadow: none;
    border: none;
    padding: 0 0 8px 12px;
    display: none;
  }
  .pc-dropdown__grid { grid-template-columns: 1fr; }
  .pc-header__actions { display: none; }
}
@media (max-width: 640px) {
  .pc-hero { padding: 48px 0 32px; }
  .pc-section { padding: 48px 0; }
  .pc-loc-grid,
  .pc-reviews,
  .pc-feat-grid,
  .pc-use-grid,
  .pc-socks-grid,
  .pc-kpi-row { grid-template-columns: 1fr; }
  .pc-footer__top { grid-template-columns: 1fr; }
  .pc-footer__cols { grid-template-columns: 1fr 1fr; }
  .pc-hero__cta { flex-direction: column; align-items: stretch; }
  .pc-hero__cta .pc-btn { width: 100%; }
}

/* ========== 产品页 ========== */
.pc-crumb {
  padding: 16px 0 0;
  font-size: 13px;
  color: var(--pc-muted);
}
.pc-crumb a:hover { color: var(--pc-blue); }
.pc-crumb span { margin: 0 6px; opacity: .5; }
.pc-prod-hero {
  padding: 40px 0 48px;
  text-align: center;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(4, 82, 251, .08), transparent 60%),
    var(--pc-bg);
}
.pc-prod-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 4.5vw, 48px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.2;
}
.pc-prod-hero__lead {
  margin: 0 auto 28px;
  max-width: 640px;
  font-size: 17px;
  color: var(--pc-muted);
}
.pc-prod-stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-top: 40px;
}
.pc-prod-stat {
  padding: 18px 12px;
  background: #fff;
  border: 1px solid var(--pc-border);
  border-radius: 12px;
  text-align: center;
}
.pc-prod-stat__val {
  font-size: 20px;
  font-weight: 800;
  color: var(--pc-blue);
  line-height: 1.2;
}
.pc-prod-stat__label {
  margin-top: 4px;
  font-size: 12px;
  color: var(--pc-muted);
}
.pc-price-card__badge {
  display: inline-block;
  margin-bottom: 8px;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 700;
  color: #0a7a3e;
  background: #e8f8ef;
  border-radius: 999px;
}
.pc-usecase-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 24px;
}
.pc-usecase-tabs button {
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--pc-muted);
  background: #fff;
  border: 1px solid var(--pc-border);
  border-radius: 999px;
}
.pc-usecase-tabs button.is-active,
.pc-usecase-tabs button:hover {
  color: var(--pc-blue);
  border-color: var(--pc-blue-100);
  background: var(--pc-blue-soft);
}
.pc-usecase-panel { display: none; max-width: 720px; margin: 0 auto; text-align: center; }
.pc-usecase-panel.is-active { display: block; }
.pc-usecase-panel h3 { margin: 0 0 10px; font-size: 22px; font-weight: 700; }
.pc-usecase-panel p { margin: 0; font-size: 15px; color: var(--pc-muted); line-height: 1.7; }
.pc-services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (max-width: 1024px) {
  .pc-prod-stats { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .pc-prod-stats { grid-template-columns: repeat(2, 1fr); }
  .pc-services-grid { grid-template-columns: 1fr; }
  .pc-price-grid--4 { grid-template-columns: 1fr; }
}
.pc-price-grid--4 { grid-template-columns: repeat(4, 1fr); }
.pc-price-grid--5 { grid-template-columns: repeat(3, 1fr); }
.pc-mid-link { text-align: center; margin-top: 28px; }
@media (max-width: 1024px) {
  .pc-price-grid--4 { grid-template-columns: repeat(2, 1fr); }
}

/* ========== 联系页 / 博客 ========== */
.pc-contact-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 24px;
  align-items: stretch;
}
.pc-contact-card {
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--pc-border);
  border-radius: 16px;
}
.pc-contact-card h2 {
  margin: 0 0 16px;
  font-size: 22px;
  font-weight: 800;
}
.pc-contact-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.pc-contact-list li {
  font-size: 15px;
  color: var(--pc-text);
  line-height: 1.6;
}
.pc-contact-list strong {
  display: block;
  margin-bottom: 2px;
  font-size: 13px;
  color: var(--pc-muted);
  font-weight: 600;
}
.pc-contact-list a { color: var(--pc-blue); font-weight: 600; }
.pc-contact-list a:hover { text-decoration: underline; }
.pc-contact-cta {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  padding: 28px 24px;
  background: var(--pc-blue-soft);
  border-radius: 16px;
}
.pc-contact-cta p { margin: 0; font-size: 15px; color: var(--pc-muted); }
.pc-contact-cta h3 {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  color: var(--pc-text);
}
.pc-blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.pc-blog-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--pc-border);
  border-radius: 16px;
  overflow: hidden;
  transition: box-shadow .2s, border-color .2s;
}
.pc-blog-card:hover {
  border-color: var(--pc-blue-100);
  box-shadow: var(--pc-shadow);
}
.pc-blog-card__cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.pc-blog-card__body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  flex: 1;
}
.pc-blog-card time {
  font-size: 13px;
  color: var(--pc-muted);
}
.pc-blog-card h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
}
.pc-blog-card h3 a:hover { color: var(--pc-blue); }
.pc-blog-card p {
  margin: 0;
  font-size: 14px;
  color: var(--pc-muted);
  flex: 1;
}
.pc-blog-card__more {
  font-size: 14px;
  font-weight: 600;
  color: var(--pc-blue);
}
.pc-article {
  max-width: 800px;
  margin: 0 auto;
}
.pc-article__cover {
  margin: 0 0 28px;
  border-radius: 16px;
  overflow: hidden;
}
.pc-article__cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.pc-article__body h2 {
  margin: 28px 0 12px;
  font-size: 22px;
  font-weight: 800;
}
.pc-article__body p {
  margin: 0 0 14px;
  font-size: 16px;
  color: var(--pc-text);
  line-height: 1.8;
}
.pc-article__body ul {
  margin: 0 0 16px;
  padding-left: 1.2em;
  list-style: disc;
}
.pc-article__body li {
  margin-bottom: 8px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--pc-text);
}
.pc-article__body a { color: var(--pc-blue); font-weight: 600; }
.pc-article__back {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--pc-border);
}
@media (max-width: 900px) {
  .pc-contact-grid { grid-template-columns: 1fr; }
  .pc-blog-grid { grid-template-columns: 1fr; }
}