/* 静态信息页共用样式:/client-services/、/client-services/returns/、/member/、/member/terms/,
   以及以后同类的信息页。
   - 页头 / 汉堡菜单 / 页脚(.sc-*):照首页 index.html 的 .wb-nav / .wb-menu / .wb-footer 做,
     颜色、字体、尺寸跟首页一致;首页改了这里也要一起改。
   - 信息页版式(.ip-*):白底;居中大标题(Tinos/Times)+ 小字副标题;内容区网格
     电脑 3 列、平板 2 列、手机 1 列;每块 = 加粗小标题 + 正文 + 底部一行链接;
     文字左对齐、不两端对齐;FAQ 是 Dior 风格的折叠列表。
   - 不使用 backdrop-filter / blur(手机上会卡)。 */
:root {
  --wb-bg: #FFFFFF;
  --wb-line: #E8E8E8;
  --ip-ink: #1a1a1a;
  --ip-muted: #515559;
  --ip-soft: #8C8A86;
  --wb-accent: #6E1F2A;
  --ip-err: #A3262E;
  --ip-font: 'Questrial', 'Century Gothic', 'Futura', 'Avenir Next', sans-serif;
  --ip-serif: "Times New Roman", Times, Tinos, serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
html.sc-menu-lock { overflow: hidden; }
body { margin: 0; background: var(--wb-bg); color: var(--ip-ink); overflow-x: hidden; font-family: var(--ip-font); font-size: 15px; line-height: 1.65; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
[hidden] { display: none !important; }

/* 语言:每段文字都有越南文和英文两份(data-l),按 <html lang> 只显示一份(member/lang.js) */
html[lang="vi"] [data-l="en"], html[lang="en"] [data-l="vi"] { display: none !important; }

/* ========== 导航栏 ========== */
.sc-nav { position: sticky; top: 0; z-index: 20; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; column-gap: 24px; padding: 14px 6%; background: var(--wb-bg); border-bottom: 1px solid var(--wb-line); color: #2B2622; }
.sc-burger { justify-self: start; display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; margin-left: -12px; border: none; background: transparent; padding: 0; cursor: pointer; color: inherit; }
.sc-brand { grid-column: 2; display: inline-flex; align-items: center; justify-content: center; min-height: 44px; font-family: 'Bodoni Moda', serif; font-size: 22px; letter-spacing: 4px; font-weight: 600; color: #2B2622; text-decoration: none; line-height: 1.2; }
.sc-nav-right { grid-column: 3; justify-self: end; display: flex; align-items: center; }
.sc-lang { font-family: var(--ip-font); font-size: 11px; letter-spacing: 1.5px; line-height: 1; min-height: 32px; padding: 8px 14px; background: transparent; color: inherit; border: 1px solid currentColor; border-radius: 0; cursor: pointer; transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease; }
/* 按钮看起来小(32px 高),用一个透明的伪元素把点击区域撑到 46px 高 */
.sc-lang { position: relative; }
.sc-lang::before { content: ''; position: absolute; inset: -7px -4px; }
@media (hover: hover) { .sc-lang:hover { background: #2B2622; border-color: #2B2622; color: var(--wb-bg); } }
.sc-burger:focus-visible, .sc-brand:focus-visible, .sc-lang:focus-visible { outline: 2px solid var(--wb-accent); outline-offset: 3px; }
@media (max-width: 640px) {
  .sc-nav { grid-template-columns: 44px 1fr auto; column-gap: 8px; padding: 10px 5%; }
  .sc-brand { text-align: center; }
}

/* ========== 汉堡菜单(浮动圆角面板 + 50% 黑色遮罩,跟首页一样) ========== */
.sc-overlay { position: fixed; inset: 0; z-index: 199; background: rgba(0,0,0,0.5); opacity: 0; visibility: hidden; transition: opacity 0.25s ease, visibility 0s linear 0.25s; }
.sc-overlay.sc-open { opacity: 1; visibility: visible; transition: opacity 0.25s ease, visibility 0s linear 0s; }
.sc-menu { position: fixed; top: 16px; bottom: 16px; left: 16px; width: 360px; max-width: calc(100% - 32px); z-index: 200; display: flex; flex-direction: column; background: var(--wb-bg); color: #2B2622; border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04); overflow: hidden; opacity: 0; transform: translateX(-12px); transition: opacity 0.25s ease, transform 0.25s ease; font-family: var(--ip-font); }
.sc-menu.sc-open { opacity: 1; transform: none; }
.sc-menu:focus { outline: none; }
.sc-menu-head { flex: none; padding: 18px 28px 6px; }
.sc-menu-close { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; border: none; background: transparent; color: inherit; padding: 0; cursor: pointer; font-family: inherit; font-size: 13px; letter-spacing: 0.8px; }
.sc-menu-x { font-size: 20px; line-height: 1; }
.sc-menu-body { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; padding: 4px 28px 28px; }
.sc-menu-list { list-style: none; margin: 0; padding: 0; }
.sc-menu-item { display: flex; align-items: center; justify-content: space-between; gap: 16px; width: 100%; min-height: 48px; padding: 12px 0; border: none; background: transparent; color: inherit; text-align: left; text-decoration: none; font-family: inherit; font-size: 15px; letter-spacing: 0.6px; line-height: 1.4; cursor: pointer; transition: color 0.2s ease; }
.sc-menu-arrow { font-size: 20px; line-height: 1; color: var(--ip-soft); flex: none; transition: transform 0.2s ease; }
.sc-menu-item[aria-expanded="true"] .sc-menu-arrow { transform: rotate(90deg); }
.sc-menu-item.sc-current, .sc-menu-item.sc-current .sc-menu-arrow { color: var(--wb-accent); }
.sc-menu-sub { list-style: none; margin: 0 0 8px; padding: 0 0 0 16px; border-left: 1px solid var(--wb-line); }
.sc-menu-subitem { font-size: 14px; min-height: 44px; padding: 10px 0; }
.sc-menu-divider { border: none; border-top: 1px solid var(--wb-line); margin: 10px 0; }
.sc-menu-item-sm { font-size: 13px; }
@media (hover: hover) { .sc-menu-item:hover, .sc-menu-close:hover { color: var(--wb-accent); } }
.sc-menu :focus-visible { outline: 1px solid var(--wb-accent); outline-offset: 3px; }
@media (max-width: 640px) {
  .sc-menu { top: 12px; bottom: 12px; left: 12px; right: 12px; width: auto; max-width: none; }
  .sc-menu-head { padding: 14px 22px 4px; }
  .sc-menu-body { padding: 4px 22px 24px; }
}
@media (prefers-reduced-motion: reduce) { .sc-menu, .sc-overlay { transition-duration: 0s !important; } }

/* ========== 页脚 ========== */
.sc-footer { background: var(--wb-bg); color: var(--ip-soft); border-top: 1px solid var(--wb-line); padding: 64px 6% 36px; text-align: center; }
.sc-footer-logo { display: inline-flex; align-items: center; min-height: 44px; font-family: 'Bodoni Moda', serif; font-size: 22px; letter-spacing: 4px; font-weight: 600; color: #2B2622; text-decoration: none; }
.sc-footer-follow { display: flex; flex-wrap: wrap; justify-content: center; align-items: baseline; gap: 4px 28px; margin: 22px auto 8px; font-size: 13px; }
.sc-footer-social { display: flex; flex-wrap: wrap; justify-content: center; gap: 0 24px; }
.sc-footer a { color: var(--ip-muted); text-decoration: none; transition: color 0.2s ease; }
.sc-footer-social a, .sc-footer-links a { display: inline-block; padding: 12px 0; }
@media (hover: hover) { .sc-footer a:hover { color: var(--wb-accent); } }
.sc-footer a:focus-visible { outline: 1px solid var(--wb-accent); outline-offset: 3px; }
.sc-footer-links { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 0 12px; font-size: 13px; line-height: 1.6; margin: 0 auto 28px; }
.sc-footer-dot { color: var(--ip-soft); }
.sc-footer-legal { border-top: 1px solid var(--wb-line); padding-top: 24px; max-width: 1200px; margin: 0 auto; }
.sc-footer-copy { font-size: 11px; letter-spacing: 0.5px; color: var(--ip-soft); }
@media (max-width: 480px) { .sc-footer-follow { flex-direction: column; align-items: center; } }

/* ========== 信息页版式 ========== */
.ip-main { max-width: 1120px; margin: 0 auto; padding: 104px 6% 120px; }
.ip-head { text-align: center; max-width: 760px; margin: 0 auto 100px; }
.ip-title { font-family: var(--ip-serif); font-weight: 400; font-size: 60px; line-height: 1.08; letter-spacing: 0.3px; margin: 0; color: var(--ip-ink); }
.ip-subtitle { font-family: var(--ip-serif); font-size: 15px; letter-spacing: 0.4px; color: var(--ip-muted); margin: 18px 0 0; }
.ip-intro { font-size: 15px; line-height: 1.7; color: var(--ip-muted); margin: 14px auto 0; max-width: 560px; }
@media (max-width: 640px) {
  .ip-main { padding: 64px 6% 88px; }
  .ip-head { margin-bottom: 64px; }
  .ip-title { font-size: 38px; }
}

/* 内容网格:6 块 = 电脑 3 列 / 平板 2 列 / 手机 1 列。
   3 块的网格(.ip-grid-3)平板也排 3 列,避免 2 列时最后一行只剩一块。 */
.ip-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: 72px; row-gap: 56px; }
@media (max-width: 1023px) {
  .ip-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 48px; }
  .ip-grid.ip-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: 36px; }
}
@media (max-width: 767px) {
  .ip-grid, .ip-grid.ip-grid-3 { grid-template-columns: 1fr; row-gap: 44px; }
}
.ip-block { display: flex; flex-direction: column; min-width: 0; text-align: left; scroll-margin-top: 96px; }
/* Questrial 只有常规体,浏览器的"假粗体"在很多手机上几乎看不出来,所以再加一圈 0.45px 的描边,
   让小标题稳定地显示成加粗 */
.ip-block-title { font-family: var(--ip-font); font-weight: 700; font-size: 16px; letter-spacing: 0.4px; line-height: 1.4; margin: 0 0 12px; color: var(--ip-ink); -webkit-text-stroke: 0.45px currentColor; }
.ip-p { font-size: 15px; line-height: 1.65; color: #333333; margin: 0 0 12px; text-align: left; }
.ip-p:last-child { margin-bottom: 0; }
.ip-p strong { font-weight: 700; color: var(--ip-ink); -webkit-text-stroke: 0.3px currentColor; }
.ip-em { color: var(--ip-muted); }
.ip-list { margin: 0 0 12px; padding-left: 18px; font-size: 15px; line-height: 1.8; color: #333333; }
.ip-block-links { margin-top: auto; padding-top: 14px; display: flex; flex-direction: column; align-items: flex-start; }
:target.ip-block .ip-block-title { color: var(--wb-accent); }

/* 纯文字链接(带 →,不加句号),悬停加下划线;点击区域至少 44px 高 */
.ip-link { display: inline-flex; align-items: center; min-height: 44px; font-size: 15px; letter-spacing: 0.3px; color: var(--ip-ink); text-decoration: none; text-underline-offset: 4px; text-decoration-thickness: 1px; }
@media (hover: hover) { .ip-link:hover { text-decoration: underline; color: var(--wb-accent); } }
.ip-link:focus-visible { outline: 1px solid var(--wb-accent); outline-offset: 2px; }

/* 网格下方居中的小字段落(退换货页的 How to Request、会员页的 VIP 引导等) */
.ip-center { text-align: center; max-width: 640px; margin: 88px auto 0; }
.ip-center-title { font-family: var(--ip-font); font-weight: 700; font-size: 15px; letter-spacing: 0.4px; margin: 0 0 10px; -webkit-text-stroke: 0.4px currentColor; }
.ip-center p { font-size: 14px; line-height: 1.7; color: var(--ip-muted); margin: 0; }
.ip-center + .ip-center { margin-top: 40px; }

/* 衬线副标题(条款页的 Your Information 等) */
.ip-h2 { font-family: var(--ip-serif); font-weight: 400; font-size: 36px; line-height: 1.15; text-align: center; margin: 0 0 48px; }
.ip-section { margin-top: 112px; }
@media (max-width: 640px) { .ip-h2 { font-size: 28px; margin-bottom: 36px; } .ip-section { margin-top: 80px; } }

/* 页尾:一句话 + 一个链接,上面一条发丝线 */
.ip-closing { text-align: center; margin-top: 112px; padding-top: 48px; border-top: 1px solid var(--wb-line); }
.ip-closing p { font-size: 15px; color: var(--ip-muted); margin: 0 0 6px; }
@media (max-width: 640px) { .ip-closing { margin-top: 80px; } }

/* ========== FAQ(Dior 风格):居中大写标题 + 折叠问答,默认全部收起 ========== */
.ip-faq { max-width: 760px; margin: 120px auto 0; }
.ip-faq-title { font-family: var(--ip-font); font-weight: 400; font-size: 15px; letter-spacing: 3px; text-transform: uppercase; text-align: center; margin: 0 0 48px; }
.ip-faq-group { margin: 0 0 40px; }
.ip-faq-group-title { font-family: var(--ip-serif); font-weight: 400; font-size: 22px; margin: 0 0 8px; }
.ip-qa { border-bottom: 1px solid var(--wb-line); }
.ip-qa:first-of-type { border-top: 1px solid var(--wb-line); }
.ip-qa summary { display: flex; justify-content: space-between; align-items: center; gap: 20px; min-height: 56px; padding: 14px 0; cursor: pointer; list-style: none; font-size: 15px; line-height: 1.5; }
.ip-qa summary::-webkit-details-marker { display: none; }
.ip-qa summary::after { content: '+'; flex: none; font-size: 20px; line-height: 1; color: var(--ip-muted); transition: transform 0.2s ease; }
.ip-qa[open] summary::after { transform: rotate(45deg); }
@media (hover: hover) { .ip-qa summary:hover { color: var(--wb-accent); } }
.ip-qa summary:focus-visible { outline: 1px solid var(--wb-accent); outline-offset: 3px; }
.ip-qa-a { padding: 0 0 20px; }
.ip-qa-a p { font-size: 14px; line-height: 1.7; color: var(--ip-muted); margin: 0; }
@media (max-width: 640px) { .ip-faq { margin-top: 88px; } }