/* Shared Header/Footer markup styles. Tokens live in design-tokens.css. */
[data-site-header] { display: block; height: var(--header-height); }
/* Exceptions to the shared Chinese regular-weight policy stay with the shell. */
html:lang(zh) .brand { --zh-text-weight: var(--brand-weight); }
html:lang(zh) .footer h4 { --zh-text-weight: 700; }
.skip {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  transform: translateY(-160%);
  padding: var(--space-10) var(--space-14);
  background: var(--color-white);
  border: 1px solid var(--line);
  border-radius: var(--radius-12);
}

.skip:focus {
  transform: none;
}

.header {
  height: var(--header-height);
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-surface);
  backdrop-filter: var(--header-blur);
  border-bottom: 1px solid var(--header-line);
  line-height: normal;
}

.header-inner {
  height: 100%;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
}

.brand {
  font-family: var(--font-brand);
  display: flex;
  align-items: center;
  gap: var(--brand-gap);
  font-size: var(--text-18);
  font-weight: var(--brand-weight);
  letter-spacing: var(--brand-tracking);
  justify-self: start;
}

.logo {
  width: 36px;
  height: 36px;
  border-radius: var(--logo-radius);
  position: relative;
  background: transparent url('/mixso-assets/assets/mixso-logo-transparent.png?v=3f47e12f3258') center/contain no-repeat;
  box-shadow: var(--logo-glow);
}

.header .brand,
.footer .brand {
  color: var(--color-brand);
}

.header .brand .logo,
.footer .brand .logo {
  display: block;
  position: relative;
  flex: 0 0 36px;
  width: 36px;
  min-width: 36px;
  max-width: 36px;
  height: 36px;
  overflow: visible;
  background: transparent;
}

.header .brand .logo img,
.footer .brand .logo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transform: none;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--nav-gap);
}

.nav a {
  font-family: var(--font-navigation);
  position: relative;
  height: var(--header-height);
  padding: 0 var(--nav-padding);
  display: inline-flex;
  align-items: center;
  font-size: var(--text-16);
  color: var(--nav-color);
  font-weight: var(--nav-weight);
  transition: var(--nav-transition);
}

.nav a:hover {
  color: var(--nav-active);
}

.nav a.active {
  color: var(--nav-active);
}

.nav a.active:after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: var(--indicator-width);
  height: var(--indicator-height);
  transform: translateX(-50%);
  border-radius: var(--radius-2);
  background: linear-gradient(90deg,var(--color-brand-dark),var(--color-brand-light));
  box-shadow: none;
}

@keyframes nav-indicator-in { from { transform: translateX(-50%) scaleX(0); } to { transform: translateX(-50%) scaleX(1); } }
/* Hover, keyboard focus and the active page share the same indicator. */
@media (min-width:901px) {
  .header .nav a { isolation: isolate; }
  .header .nav a::before {
    content: "";
    position: absolute;
    z-index: -1;
    inset: 18px -8px;
    border-radius: var(--radius-6);
    background: var(--color-eaf7f3);
    opacity: 0;
    transition: opacity 160ms ease-out;
  }
  .header .nav a:hover::before,
  .header .nav a:focus-visible::before { opacity: 1; }
  .header .nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 0;
    width: var(--indicator-width);
    height: 2px;
    border-radius: 2px;
    background: var(--nav-active);
    transform: translateX(-50%) scaleX(0);
    transition: transform 160ms ease-out;
  }
  .header .nav a.active::after,
  .header .nav a:hover::after,
  .header .nav a:focus-visible::after { transform: translateX(-50%) scaleX(1); }
  .header .nav a.active::after { animation: nav-indicator-in 180ms ease-out both; }
  .header .nav a:focus-visible { outline: 2px solid var(--nav-active); outline-offset: -12px; }
}
@media (prefers-reduced-motion:reduce) {
  .header .nav a::before, .header .nav a::after, .header .nav a.active::after { transition: none; animation: none; }
}

.header-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: var(--space-10);
}

.signin {
  height: 40px;
  border: 1px solid var(--control-line);
  background: var(--color-white);
  border-radius: var(--control-radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--control-shadow);
}

.signin {
  font-family: var(--font-navigation);
  padding: 0 var(--signin-padding);
  font-size: var(--text-14);
  font-weight: var(--signin-weight);
  cursor: var(--signin-cursor);
}

.signin:hover {
  background: var(--control-hover);
  border-color: var(--control-hover-line);
}

.signin-label { white-space: nowrap; }

html:lang(en) .nav a {
  font-weight: var(--nav-weight);
  letter-spacing: 0;
}

html:lang(en) .signin {
  font-weight: var(--signin-weight);
  letter-spacing: 0;
}

.footer {
  letter-spacing: 0;
  font-family: var(--font-body);
  line-height: 1.75;
  padding: var(--footer-padding);
  border-top: 1px solid var(--line);
  background: var(--color-white);
}

.footer-grid {
  display: grid;
  grid-template-columns: var(--footer-columns);
  gap: var(--footer-gap);
}

.footer-brand p {
  max-width: var(--footer-copy-width);
  color: var(--footer-copy-color);
  font-size: var(--text-14);
  line-height: var(--footer-copy-leading);
}

.footer h4 {
  margin: var(--footer-title-margin);
  font-size: var(--footer-title-size);
  color: var(--footer-title-color);
  font-weight: 600;
}

.footer a {
  display: block;
  margin: var(--space-10) 0;
  color: var(--footer-copy-color);
  font-size: var(--text-14);
}

.footer a:hover {
  color: var(--color-brand);
}

.footer a.brand {
  font-size: 18px;
  font-weight: var(--brand-weight);
  letter-spacing: 0;
  display: flex;
  align-items: center;
  gap: var(--space-12);
  margin: 0;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: var(--footer-bottom-gap);
  margin-top: var(--space-38);
  padding-top: var(--space-20);
  border-top: 1px solid var(--line);
  color: var(--footer-bottom-color);
  font-size: var(--text-14);
}

@media(max-width:1050px) {
  .header-inner {
    grid-template-columns: auto 1fr auto;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media(max-width:720px) {
  .footer {
    padding: 32px 0 24px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 20px;
  }

  .footer-brand {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 16px;
  }

  .footer-brand .brand {
    flex-shrink: 0;
  }

  .footer-brand p {
    min-width: 0;
    margin: 0;
  }

  .footer-col {
    min-width: 0;
  }

  .footer-col h4 {
    margin-bottom: 4px;
  }

  .footer-col a {
    display: flex;
    align-items: center;
    min-height: 44px;
    margin: 0;
    padding: 4px 0;
    overflow-wrap: anywhere;
  }

  .footer-bottom {
    margin-top: 24px;
    padding-top: 16px;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-8);
  }
}

.account-entry {
  overflow: hidden;
}

.account-avatar {
  display: none;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  object-fit: cover;
}

.account-avatar-fallback {
  display: none;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  align-items: center;
  justify-content: center;
  background: var(--color-brand);
  color: var(--color-white);
  font-size: var(--text-14);
  font-weight: 600;
}

.account-entry.is-authenticated .signin-label {
  display: none;
}

.account-entry.is-authenticated .account-avatar:not([hidden]) {
  display: block;
}

.account-entry.is-authenticated .account-avatar[hidden]+.account-avatar-fallback {
  display: flex;
}

@media(max-width:900px) {
  .signin {
    display: inline-flex;
  }
}

@media(max-width:640px) {
  .header-actions {
    gap: var(--space-8);
  }

  .signin {
    min-width: 48px;
    height: 38px;
    padding: 0 var(--space-10);
    font-size: var(--text-14);
  }

}

.menu-toggle {
  display: none;
}

.nav-scrim {
  display: none;
}

@media(max-width:900px) {
  [data-site-header] { height: 68px; }

  body.menu-open {
    overflow: hidden;
  }

  .header {
    height: 68px;
  }

  .header-inner {
    height: 68px;
    grid-template-columns: minmax(0,1fr) auto;
    grid-template-rows: 68px;
    column-gap: var(--space-12);
  }

  .brand {
    grid-column: 1;
    grid-row: 1;
  }

  .header-actions {
    grid-column: 2;
    grid-row: 1;
    position: relative;
    z-index: 132;
  }

  .menu-toggle {
    display: inline-flex;
    position: relative;
    width: 40px;
    height: 40px;
    flex: 0 0 40px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--line);
    border-radius: var(--radius-3);
    background: var(--color-white);
    color: var(--color-brand);
    cursor: pointer;
  }

  .menu-toggle span {
    position: absolute;
    width: 18px;
    height: 2px;
    border-radius: var(--radius-5);
    background: currentColor;
    transition: transform .24s cubic-bezier(.22,.8,.22,1),top .24s cubic-bezier(.22,.8,.22,1),opacity .16s ease;
  }

  .menu-toggle span:nth-child(1) {
    top: 14px;
  }

  .menu-toggle span:nth-child(2) {
    top: 19px;
  }

  .menu-toggle span:nth-child(3) {
    top: 24px;
  }

  .menu-toggle.is-open span:nth-child(1) {
    top: 19px;
    transform: rotate(45deg);
  }

  .menu-toggle.is-open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(.4);
  }

  .menu-toggle.is-open span:nth-child(3) {
    top: 19px;
    transform: rotate(-45deg);
  }

  .nav {
    display: flex;
    position: fixed;
    z-index: 130;
    top: 68px;
    bottom: 0;
    left: 0;
    width: min(82vw,360px);
    height: calc(100dvh - 68px);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: var(--space-8);
    padding: var(--space-24) var(--space-14) calc(var(--space-24) + env(safe-area-inset-bottom));
    overflow-y: auto;
    border: 0;
    border-right: 1px solid var(--color-dfe8e5);
    background: rgba(255,255,255,.98);
    box-shadow: var(--shadow-4);
    transform: translate3d(-104%,0,0);
    visibility: hidden;
    transition: transform .3s cubic-bezier(.22,.8,.22,1),visibility 0s linear .3s;
  }

  .menu-open .nav {
    transform: translate3d(0,0,0);
    visibility: visible;
    transition-delay: 0s;
  }

  .nav a {
    display: flex;
    position: relative;
    flex: 0 0 auto;
    height: 64px;
    align-items: center;
    gap: var(--space-18);
    padding: 0 var(--space-22);
    border-radius: var(--radius-6);
    color: var(--color-718097);
    font-size: var(--text-16);
    font-weight: var(--nav-weight);
    opacity: 0;
    transform: translateX(-10px);
    transition: background .18s ease,color .18s ease,opacity .2s ease,transform .28s cubic-bezier(.22,.8,.22,1);
  }

  .menu-open .nav a {
    opacity: 1;
    transform: none;
  }

  .menu-open .nav a:nth-child(1) {
    transition-delay: .05s;
  }

  .menu-open .nav a:nth-child(2) {
    transition-delay: .08s;
  }

  .menu-open .nav a:nth-child(3) {
    transition-delay: .11s;
  }

  .menu-open .nav a:nth-child(4) {
    transition-delay: .14s;
  }

  .nav a:hover {
    background: var(--color-eaf7f3);
    color: var(--color-brand);
  }

  .nav a.active {
    background: var(--color-eaf7f3);
    color: var(--color-brand);
  }

  .nav a.active:after {
    top: 10px;
    bottom: 10px;
    left: 0;
    width: 4px;
    height: auto;
    transform: none;
    border-radius: var(--radius-7);
    background: linear-gradient(90deg,var(--color-brand-dark),var(--color-brand-light));
  }

  .nav a:before {
    content: "";
    display: block;
    width: 24px;
    height: 24px;
    flex: 0 0 24px;
    background: currentColor;
    mask: var(--nav-icon) center/contain no-repeat;
    -webkit-mask: var(--nav-icon) center/contain no-repeat;
  }

  .nav a[data-nav-icon="home"] {
    --nav-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cg fill='none' stroke='black' stroke-width='1.8'%3E%3Crect x='3' y='3' width='6' height='6' rx='1'/%3E%3Crect x='15' y='3' width='6' height='6' rx='1'/%3E%3Crect x='3' y='15' width='6' height='6' rx='1'/%3E%3Crect x='15' y='15' width='6' height='6' rx='1'/%3E%3C/g%3E%3C/svg%3E");
  }

  .nav a[data-nav-icon="download"] {
    --nav-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cg fill='none' stroke='black' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 3v11m-4-4 4 4 4-4'/%3E%3Cpath d='M4 17v3h16v-3'/%3E%3C/g%3E%3C/svg%3E");
  }

  .nav a[data-nav-icon="plugins"] {
    --nav-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cg fill='none' stroke='black' stroke-width='1.8' stroke-linejoin='round'%3E%3Cpath d='M4 4h7v7H4zM13 4h7v7h-7zM4 13h7v7H4z'/%3E%3Cpath d='M16.5 13v7M13 16.5h7'/%3E%3C/g%3E%3C/svg%3E");
  }

  .nav a[data-nav-icon="help"] {
    --nav-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cg fill='none' stroke='black' stroke-width='1.8' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M9.8 9a2.3 2.3 0 1 1 3.5 2c-.9.5-1.3 1-1.3 2M12 17h.01'/%3E%3C/g%3E%3C/svg%3E");
  }

  .nav-scrim {
    display: block;
    position: fixed;
    z-index: 90;
    inset: 68px 0 0;
    border: 0;
    background: rgba(26,51,46,.25);
    opacity: 0;
    visibility: hidden;
    backdrop-filter: blur(3px);
    transition: opacity .22s ease,visibility 0s linear .3s;
    cursor: pointer;
  }

  .menu-open .nav-scrim {
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
  }
}

@media(max-width:420px) {
  .header-actions {
    gap: var(--space-6);
  }

  .menu-toggle {
    width: 38px;
    height: 38px;
    flex-basis: 38px;
  }

  .signin {
    min-width: 46px;
    padding: 0 var(--space-10);
  }
}

@media(prefers-reduced-motion:reduce) {
  .menu-toggle span {
    transition-duration: .01ms!important;
    transition-delay: 0s!important;
  }

  .nav {
    transition-duration: .01ms!important;
    transition-delay: 0s!important;
  }

  .nav a {
    transition-duration: .01ms!important;
    transition-delay: 0s!important;
  }

  .nav-scrim {
    transition-duration: .01ms!important;
    transition-delay: 0s!important;
  }
}

/* Match Account's header controls; keep the guest sign-in link unchanged. */
.header-popup {
  position: relative;
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  font-family: "Segoe UI", "Microsoft YaHei UI", sans-serif;
}
.header-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 140;
  background: var(--color-white);
}
.header-dropdown[hidden] { display: none; }
.header-popup button { font: inherit; cursor: pointer; }
.header-popup button:focus-visible,
.header-popup a:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 3px;
}
.language-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  width: 104px;
  flex: 0 0 104px;
  height: 44px;
  padding: 0 4px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--color-brand);
}
.language-trigger:hover,
.language-trigger[aria-expanded="true"] { color: var(--color-brand-dark); }
.language-trigger svg { width: 20px; height: 20px; flex: 0 0 20px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.language-current { font-size: 15px; line-height: 22px; font-weight: 400; white-space: nowrap; }
.language-trigger:hover .language-current,
.language-trigger[aria-expanded="true"] .language-current { text-decoration: underline; text-underline-offset: 4px; }
/* Keep the full language name and controls usable on narrow phones. */
@media(max-width:380px) { .header .brand > span:last-child { display: none; } }
.language-dropdown {
  width: 180px;
  padding: 6px;
  border: 1px solid #e2ebe8;
  border-radius: 12px;
  box-shadow: 0 6px 18px rgb(17 28 47 / 10%);
}
.language-dropdown button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  min-height: 44px;
  padding: 8px 12px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #344054;
  font-size: 15px;
  line-height: 22px;
  text-align: left;
}
.language-dropdown button + button { margin-top: 2px; }
.language-dropdown button[aria-checked="true"] {
  --zh-text-weight: 600;
  background: #e7f7f1;
  color: #087e68;
  font-weight: 600;
}
.language-dropdown button:hover { background: #f0f8f5; }
.language-dropdown button[aria-checked="true"]:hover { background: #def2ea; }
.language-dropdown button:focus-visible { outline-offset: -2px; }
.language-dropdown svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; }
.account-entry.is-authenticated {
  width: 42px;
  min-width: 42px;
  height: 42px;
  padding: 2px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  box-shadow: none;
  overflow: visible;
}
.account-entry.is-authenticated:hover,
.account-entry.is-authenticated[aria-expanded="true"] { background: #eaf8f4; }
.account-entry.is-authenticated .account-avatar,
.account-entry.is-authenticated .account-avatar-fallback {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  border-radius: 50%;
}
.account-entry.is-authenticated .account-avatar-fallback {
  --zh-text-weight: 400;
  background: linear-gradient(145deg, #087e68, #079b7d);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: .02em;
  line-height: 1;
  box-shadow: 0 5px 14px rgb(7 155 125 / 18%);
}
.account-dropdown {
  width: 232px;
  max-width: calc(100vw - 32px);
  padding: 9px;
  border: 1px solid #e3ebe8;
  border-radius: 14px;
  box-shadow: 0 18px 44px rgb(17 28 47 / 9%);
}
.account-identity { padding: 11px 11px 13px; border-bottom: 1px solid #e3ebe8; margin-bottom: 6px; }
.account-name {
  --zh-text-weight: 600;
  display: block;
  color: #111c2f;
  font-size: 15px;
  font-weight: 600;
  overflow-wrap: anywhere;
}
.account-email {
  display: block;
  margin-top: 4px;
  color: #6b778b;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.account-email[hidden] { display: none; }
.account-dropdown a {
  display: flex;
  width: 100%;
  min-height: 44px;
  align-items: center;
  padding: 10px 11px;
  border-radius: 9px;
  color: #344054;
  font-size: 14px;
  text-align: left;
}
.account-dropdown a:hover { background: #f3fbf8; }
.account-dropdown .account-signout { color: #b42318; }
.signin-notice {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px 16px;
  margin: 0;
  padding: 12px 16px;
  text-align: center;
  font-size: var(--text-14);
  line-height: 1.5;
  color: var(--color-brand);
  background: var(--control-hover, #f5f7fa);
  border-bottom: 1px solid var(--header-line, var(--line));
}
.signin-retry {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 4px;
}

/* Reserve the same header slot before and after session verification. */
html { scrollbar-gutter: stable; }
.account-slot { position: relative; display: flex; justify-content: flex-end; align-items: center; width: 80px; flex: 0 0 80px; min-height: 42px; }
html:lang(zh) .account-slot { width: 60px; flex-basis: 60px; }
.async-reveal { animation: async-content-in 180ms ease-out; }
@keyframes async-content-in { from { opacity: 0; } to { opacity: 1; } }
@media(max-width:640px) { .account-slot { width: 72px; flex-basis: 72px; } html:lang(zh) .account-slot { width: 52px; flex-basis: 52px; } }
/* Keep the last appearance while verifying. With no account snapshot, the
   prerendered sign-in button is already the correct anonymous appearance.
   Checking is a network state, not a reason to resize or hide this control. */
html[data-account-display] .header .account-slot,
html[data-session="ready"] .header .account-slot { width: 42px; flex-basis: 42px; }
.header .header-actions { gap: 10px; }
/* Restore only the previous appearance before deferred scripts/session finish. */
html[data-account-display="preview"] .account-slot > * { visibility: hidden; }
html[data-account-display="preview"] .account-slot > .account-menu { visibility: visible; }
html[data-account-display="preview"] .account-avatar-fallback { visibility: hidden; }
html[data-account-display="preview"] .account-slot::after {
  content: var(--account-preview-initials, ""); display: grid; place-items: center;
  width: 36px; height: 36px; position: absolute; right: 3px; border-radius: 50%;
  background: #edf3f1;
  color: #262626; font-size: 13px; font-weight: 400;
}
html[data-account-display="preview"] .account-slot > .account-preview-image:not([hidden]) {
  position: absolute; right: 3px; width: 36px; height: 36px; border-radius: 50%;
  object-fit: cover; visibility: visible; z-index: 1; pointer-events: none;
}
.account-preview-image { display: none; }
html[data-account-display="preview"] .account-preview-image:not([hidden]) { display: block; }
@media(prefers-reduced-motion:reduce) { .async-reveal, html[data-session="ready"] .account-slot > * { animation: none; } }