/* ---------- 字体 ---------- */
@font-face {
  font-family: Instrument Serif;
  src:
    local(Instrument Serif Regular Italic),
    local(Instrument Serif Italic),
    url(../fonts/svLEQR1NhVsKV3td5-qEdR3OcCyUB1uXwND4pueM24E-_ai0lJkLAXfhhHb6ZYIId61FSPBqXyGFmF0ftxqBrQ0.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+100-2BA, U+2BD-2C5, U+2C7-2CC, U+2CE-2D7, U+2DD-2FF, U+304, U+308, U+329, U+1D00-1DBF,
    U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
  font-weight: 400;
  font-style: italic;
}
@font-face {
  font-family: Instrument Serif;
  src:
    local(Instrument Serif Regular Italic),
    local(Instrument Serif Italic),
    url(../fonts/ATc0VqIXMNIEgWU4XzMMCAWoJJ4G11FKjX38DInsfx0-bGhSBtjl_XEffZBInMi-gJZBMjmF_0UQsncnDV02cEc.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+??, U+131, U+152-153, U+2BB-2BC, U+2C6, U+2DA, U+2DC, U+304, U+308, U+329, U+2000-206F,
    U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
  font-weight: 400;
  font-style: italic;
}
@font-face {
  font-family: Instrument Serif;
  src:
    local(Instrument Serif Regular),
    local(Instrument Serif),
    url(../fonts/4VzVfti7A9XwdTiq16lO4lLfZTtYPcEFGbpaWWH4bDo-xec7qfdrgCQ5lsquFv1xibvLzatcl3q_vTUpC4HNYZA.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+100-2BA, U+2BD-2C5, U+2C7-2CC, U+2CE-2D7, U+2DD-2FF, U+304, U+308, U+329, U+1D00-1DBF,
    U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
  font-weight: 400;
  font-style: normal;
}
@font-face {
  font-family: Instrument Serif;
  src:
    local(Instrument Serif Regular),
    local(Instrument Serif),
    url(../fonts/MkzsVVsVa19hNhuifJxuUyjYXA8QsnSlohE8Xis64wI-b_OhvLchONOxbaZEOWy7B_wZN5OrU3apyvlSa5_nXOQ.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+??, U+131, U+152-153, U+2BB-2BC, U+2C6, U+2DA, U+2DC, U+304, U+308, U+329, U+2000-206F,
    U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
  font-weight: 400;
  font-style: normal;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Regular Italic),
    local(Public Sans Italic),
    url(../fonts/8VR2wSMN-3U4NbWAVYXlkRV6hA0jFBXP-0RtL3X7fko-x2gYI4qfmkRdxyQQUPaBZdZdgl1TeVrquF_TxHeM4lM.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+102-103, U+110-111, U+128-129, U+168-169, U+1A0-1A1, U+1AF-1B0, U+300-301, U+303-304,
    U+308-309, U+323, U+329, U+1EA0-1EF9, U+20AB;
  font-weight: 400;
  font-style: italic;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Regular Italic),
    local(Public Sans Italic),
    url(../fonts/57NSSoFy1VLVs2gqly8Ls9awBnZMFyXGrefpmqvdqmc-zJfbBtpgM4cDmcXBsqZNW79_kFnlpPd62b48glgdydA.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+100-2BA, U+2BD-2C5, U+2C7-2CC, U+2CE-2D7, U+2DD-2FF, U+304, U+308, U+329, U+1D00-1DBF,
    U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
  font-weight: 400;
  font-style: italic;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Regular Italic),
    local(Public Sans Italic),
    url(../fonts/Ld1FnTo3yTIwDyGfTQ5-Fws9AWsCbKfMvgxduXr7JcY-W25bL8NF1fjpLRSOgJb7RoZPHqGQNwMTM7S9tHVoxx8.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+??, U+131, U+152-153, U+2BB-2BC, U+2C6, U+2DA, U+2DC, U+304, U+308, U+329, U+2000-206F,
    U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
  font-weight: 400;
  font-style: italic;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Medium Italic),
    url(../fonts/8VR2wSMN-3U4NbWAVYXlkRV6hA0jFBXP-0RtL3X7fko-x2gYI4qfmkRdxyQQUPaBZdZdgl1TeVrquF_TxHeM4lM.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+102-103, U+110-111, U+128-129, U+168-169, U+1A0-1A1, U+1AF-1B0, U+300-301, U+303-304,
    U+308-309, U+323, U+329, U+1EA0-1EF9, U+20AB;
  font-weight: 500;
  font-style: italic;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Medium Italic),
    url(../fonts/57NSSoFy1VLVs2gqly8Ls9awBnZMFyXGrefpmqvdqmc-zJfbBtpgM4cDmcXBsqZNW79_kFnlpPd62b48glgdydA.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+100-2BA, U+2BD-2C5, U+2C7-2CC, U+2CE-2D7, U+2DD-2FF, U+304, U+308, U+329, U+1D00-1DBF,
    U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
  font-weight: 500;
  font-style: italic;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Medium Italic),
    url(../fonts/Ld1FnTo3yTIwDyGfTQ5-Fws9AWsCbKfMvgxduXr7JcY-W25bL8NF1fjpLRSOgJb7RoZPHqGQNwMTM7S9tHVoxx8.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+??, U+131, U+152-153, U+2BB-2BC, U+2C6, U+2DA, U+2DC, U+304, U+308, U+329, U+2000-206F,
    U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
  font-weight: 500;
  font-style: italic;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans SemiBold Italic),
    url(../fonts/8VR2wSMN-3U4NbWAVYXlkRV6hA0jFBXP-0RtL3X7fko-x2gYI4qfmkRdxyQQUPaBZdZdgl1TeVrquF_TxHeM4lM.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+102-103, U+110-111, U+128-129, U+168-169, U+1A0-1A1, U+1AF-1B0, U+300-301, U+303-304,
    U+308-309, U+323, U+329, U+1EA0-1EF9, U+20AB;
  font-weight: 600;
  font-style: italic;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans SemiBold Italic),
    url(../fonts/57NSSoFy1VLVs2gqly8Ls9awBnZMFyXGrefpmqvdqmc-zJfbBtpgM4cDmcXBsqZNW79_kFnlpPd62b48glgdydA.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+100-2BA, U+2BD-2C5, U+2C7-2CC, U+2CE-2D7, U+2DD-2FF, U+304, U+308, U+329, U+1D00-1DBF,
    U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
  font-weight: 600;
  font-style: italic;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans SemiBold Italic),
    url(../fonts/Ld1FnTo3yTIwDyGfTQ5-Fws9AWsCbKfMvgxduXr7JcY-W25bL8NF1fjpLRSOgJb7RoZPHqGQNwMTM7S9tHVoxx8.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+??, U+131, U+152-153, U+2BB-2BC, U+2C6, U+2DA, U+2DC, U+304, U+308, U+329, U+2000-206F,
    U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
  font-weight: 600;
  font-style: italic;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Bold Italic),
    url(../fonts/8VR2wSMN-3U4NbWAVYXlkRV6hA0jFBXP-0RtL3X7fko-x2gYI4qfmkRdxyQQUPaBZdZdgl1TeVrquF_TxHeM4lM.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+102-103, U+110-111, U+128-129, U+168-169, U+1A0-1A1, U+1AF-1B0, U+300-301, U+303-304,
    U+308-309, U+323, U+329, U+1EA0-1EF9, U+20AB;
  font-weight: 700;
  font-style: italic;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Bold Italic),
    url(../fonts/57NSSoFy1VLVs2gqly8Ls9awBnZMFyXGrefpmqvdqmc-zJfbBtpgM4cDmcXBsqZNW79_kFnlpPd62b48glgdydA.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+100-2BA, U+2BD-2C5, U+2C7-2CC, U+2CE-2D7, U+2DD-2FF, U+304, U+308, U+329, U+1D00-1DBF,
    U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
  font-weight: 700;
  font-style: italic;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Bold Italic),
    url(../fonts/Ld1FnTo3yTIwDyGfTQ5-Fws9AWsCbKfMvgxduXr7JcY-W25bL8NF1fjpLRSOgJb7RoZPHqGQNwMTM7S9tHVoxx8.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+??, U+131, U+152-153, U+2BB-2BC, U+2C6, U+2DA, U+2DC, U+304, U+308, U+329, U+2000-206F,
    U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
  font-weight: 700;
  font-style: italic;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Regular),
    local(Public Sans),
    url(../fonts/NdzqRASp2bovDUhQT1IRE_EMqKJ2KYQdTCfFcBvL8yw-KhwZiS86o3fErOe5GGMExHUemmI_dBfaEFxjISZrBd0.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+102-103, U+110-111, U+128-129, U+168-169, U+1A0-1A1, U+1AF-1B0, U+300-301, U+303-304,
    U+308-309, U+323, U+329, U+1EA0-1EF9, U+20AB;
  font-weight: 400;
  font-style: normal;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Regular),
    local(Public Sans),
    url(../fonts/iTkrULNFJJkTvihIg1Vqi5IODRH_9btXCioVF5l98I8-AndUyau2HR2felA_ra8V2mutQgschhasE5FD1dXGJX8.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+100-2BA, U+2BD-2C5, U+2C7-2CC, U+2CE-2D7, U+2DD-2FF, U+304, U+308, U+329, U+1D00-1DBF,
    U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
  font-weight: 400;
  font-style: normal;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Regular),
    local(Public Sans),
    url(../fonts/GsKUclqeNLJ96g5AU593ug6yanivOiwjW_7zESNPChw-jHA4tBeM1bjF7LATGUpfBuSTyomIFrWBTzjF7txVYfg.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+??, U+131, U+152-153, U+2BB-2BC, U+2C6, U+2DA, U+2DC, U+304, U+308, U+329, U+2000-206F,
    U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
  font-weight: 400;
  font-style: normal;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Medium),
    url(../fonts/NdzqRASp2bovDUhQT1IRE_EMqKJ2KYQdTCfFcBvL8yw-KhwZiS86o3fErOe5GGMExHUemmI_dBfaEFxjISZrBd0.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+102-103, U+110-111, U+128-129, U+168-169, U+1A0-1A1, U+1AF-1B0, U+300-301, U+303-304,
    U+308-309, U+323, U+329, U+1EA0-1EF9, U+20AB;
  font-weight: 500;
  font-style: normal;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Medium),
    url(../fonts/iTkrULNFJJkTvihIg1Vqi5IODRH_9btXCioVF5l98I8-AndUyau2HR2felA_ra8V2mutQgschhasE5FD1dXGJX8.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+100-2BA, U+2BD-2C5, U+2C7-2CC, U+2CE-2D7, U+2DD-2FF, U+304, U+308, U+329, U+1D00-1DBF,
    U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
  font-weight: 500;
  font-style: normal;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Medium),
    url(../fonts/GsKUclqeNLJ96g5AU593ug6yanivOiwjW_7zESNPChw-jHA4tBeM1bjF7LATGUpfBuSTyomIFrWBTzjF7txVYfg.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+??, U+131, U+152-153, U+2BB-2BC, U+2C6, U+2DA, U+2DC, U+304, U+308, U+329, U+2000-206F,
    U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
  font-weight: 500;
  font-style: normal;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans SemiBold),
    url(../fonts/NdzqRASp2bovDUhQT1IRE_EMqKJ2KYQdTCfFcBvL8yw-KhwZiS86o3fErOe5GGMExHUemmI_dBfaEFxjISZrBd0.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+102-103, U+110-111, U+128-129, U+168-169, U+1A0-1A1, U+1AF-1B0, U+300-301, U+303-304,
    U+308-309, U+323, U+329, U+1EA0-1EF9, U+20AB;
  font-weight: 600;
  font-style: normal;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans SemiBold),
    url(../fonts/iTkrULNFJJkTvihIg1Vqi5IODRH_9btXCioVF5l98I8-AndUyau2HR2felA_ra8V2mutQgschhasE5FD1dXGJX8.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+100-2BA, U+2BD-2C5, U+2C7-2CC, U+2CE-2D7, U+2DD-2FF, U+304, U+308, U+329, U+1D00-1DBF,
    U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
  font-weight: 600;
  font-style: normal;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans SemiBold),
    url(../fonts/GsKUclqeNLJ96g5AU593ug6yanivOiwjW_7zESNPChw-jHA4tBeM1bjF7LATGUpfBuSTyomIFrWBTzjF7txVYfg.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+??, U+131, U+152-153, U+2BB-2BC, U+2C6, U+2DA, U+2DC, U+304, U+308, U+329, U+2000-206F,
    U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
  font-weight: 600;
  font-style: normal;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Bold),
    url(../fonts/NdzqRASp2bovDUhQT1IRE_EMqKJ2KYQdTCfFcBvL8yw-KhwZiS86o3fErOe5GGMExHUemmI_dBfaEFxjISZrBd0.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+102-103, U+110-111, U+128-129, U+168-169, U+1A0-1A1, U+1AF-1B0, U+300-301, U+303-304,
    U+308-309, U+323, U+329, U+1EA0-1EF9, U+20AB;
  font-weight: 700;
  font-style: normal;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Bold),
    url(../fonts/iTkrULNFJJkTvihIg1Vqi5IODRH_9btXCioVF5l98I8-AndUyau2HR2felA_ra8V2mutQgschhasE5FD1dXGJX8.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+100-2BA, U+2BD-2C5, U+2C7-2CC, U+2CE-2D7, U+2DD-2FF, U+304, U+308, U+329, U+1D00-1DBF,
    U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
  font-weight: 700;
  font-style: normal;
}
@font-face {
  font-family: Public Sans;
  src:
    local(Public Sans Bold),
    url(../fonts/GsKUclqeNLJ96g5AU593ug6yanivOiwjW_7zESNPChw-jHA4tBeM1bjF7LATGUpfBuSTyomIFrWBTzjF7txVYfg.woff2)
      format('woff2');
  font-display: swap;
  unicode-range:
    U+??, U+131, U+152-153, U+2BB-2BC, U+2C6, U+2DA, U+2DC, U+304, U+308, U+329, U+2000-206F,
    U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
  font-weight: 700;
  font-style: normal;
}

/* ---------- 设计令牌 ---------- */
:root {
  --ui-text-dimmed: #a3a3a3; /* neutral-400 */
  --ui-text-muted: #737373; /* neutral-500 */
  --ui-text: #404040; /* neutral-700 */
  --ui-text-highlighted: #171717; /* neutral-900 */
  --ui-bg: #fff;
  --ui-bg-muted: #fafafa; /* neutral-50 */
  --ui-bg-elevated: #f5f5f5; /* neutral-100 */
  --ui-bg-accented: #e5e5e5; /* neutral-200 */
  --ui-bg-inverted: #171717; /* neutral-900 */
  --ui-border: #e5e5e5; /* neutral-200 */
  --ui-border-muted: #e5e5e5; /* neutral-200 */
  --ui-primary: #3b82f6; /* blue-500 */
  color-scheme: light;
}

.dark {
  --ui-text-dimmed: #737373; /* neutral-500 */
  --ui-text-muted: #a3a3a3; /* neutral-400 */
  --ui-text: #e5e5e5; /* neutral-200 */
  --ui-text-highlighted: #fff;
  --ui-bg: #171717; /* neutral-900 */
  --ui-bg-muted: #262626; /* neutral-800 */
  --ui-bg-elevated: #262626; /* neutral-800 */
  --ui-bg-accented: #404040; /* neutral-700 */
  --ui-bg-inverted: #fff;
  --ui-border: #262626; /* neutral-800 */
  --ui-border-muted: #262626; /* neutral-800 */
  --ui-primary: #60a5fa; /* blue-400 */
  color-scheme: dark;
}

/* ---------- 基础 ---------- */
*,
::before,
::after {
  box-sizing: border-box;
  border: 0 solid;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  tab-size: 4;
  font-family:
    'Public Sans',
    ui-sans-serif,
    system-ui,
    -apple-system,
    'PingFang SC',
    'Hiragino Sans GB',
    'Microsoft YaHei',
    sans-serif;
}

body {
  background-color: var(--ui-bg);
  color: var(--ui-text);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}

img,
svg {
  display: block;
  vertical-align: middle;
}

a {
  color: inherit;
  text-decoration: inherit;
}

ul,
ol {
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

::selection {
  color: #282a30;
  background-color: #c8c8c8;
}
.dark ::selection {
  color: #fff;
  background-color: #474747;
}

/* 主题切换的圆形扩散动画（View Transitions） */
::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}
::view-transition-new(root) {
  z-index: 9999;
}
::view-transition-old(root) {
  z-index: 1;
}

/* ---------- 页面骨架 ---------- */
.page-container {
  width: 100%;
  max-width: 56rem; /* container-4xl = 896px */
  margin-inline: auto;
  padding-inline: 16px;
  padding-top: 40px; /* pt-10 */
  display: flex;
  flex-direction: column;
  min-height: 100vh; /* 内容不足一屏时也让边框线通到屏幕底部 */
  min-height: 100dvh;
}

.page-container > main {
  flex: 1;
}

@media (min-width: 640px) {
  .page-container {
    border-inline: 1px solid var(--ui-border);
    padding-inline: 24px;
  }
}

@media (min-width: 1024px) {
  .page-container {
    padding-inline: 32px;
  }
}

/* ---------- 顶部导航（固定胶囊） ---------- */
.site-nav {
  position: fixed;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}

@media (min-width: 640px) {
  .site-nav {
    top: 16px;
  }
}

.nav-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding-inline: 8px;
  border-radius: 9999px;
  border: 1px solid color-mix(in oklab, var(--ui-border-muted) 50%, transparent);
  background-color: color-mix(in oklab, var(--ui-bg-muted) 80%, transparent);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  box-shadow:
    0 10px 15px -3px rgb(10 10 10 / 0.05),
    0 4px 6px -4px rgb(10 10 10 / 0.05);
}

@media (min-width: 640px) {
  .nav-pill {
    padding-inline: 16px;
  }
}

.nav-list {
  display: flex;
  align-items: center;
}

.nav-list li {
  min-width: 0;
  padding-block: 8px;
}

.nav-list a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 14px;
  line-height: 1.42857;
  font-weight: 500;
  color: var(--ui-text-muted);
  transition: color 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-list a:hover {
  color: var(--ui-text-highlighted);
}

.nav-list a[aria-current='page'] {
  color: var(--ui-text-highlighted);
}

.nav-list a:focus-visible {
  outline: none;
}

.nav-list a:focus-visible::before {
  content: '';
  position: absolute;
  z-index: -1;
  inset-inline: 1px;
  inset-block: 0;
  border-radius: 6px;
  outline: 3px solid color-mix(in oklab, var(--ui-bg-inverted) 25%, transparent);
}

/* 主题切换按钮 */
.theme-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 9999px;
  color: var(--ui-text);
  transition: background-color 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-btn:hover {
  background-color: color-mix(in oklab, var(--ui-bg-muted) 50%, transparent);
}

.theme-btn svg {
  width: 16px;
  height: 16px;
}

html.dark .theme-btn .icon-sun {
  display: none;
}

html:not(.dark) .theme-btn .icon-moon {
  display: none;
}

/* ---------- 通用 Section ---------- */
.section {
  display: flex;
  flex-direction: column;
  padding: 64px 16px;
  gap: 32px;
}

.section--pt-0 {
  padding-top: 0;
}

.section--px-0 {
  padding-inline: 0;
}

@media (min-width: 640px) {
  .section {
    padding: 96px 24px;
    gap: 64px;
  }
  .section--pt-0 {
    padding-top: 0;
  }
  .section--px-0 {
    padding-inline: 24px;
  }
}

@media (min-width: 1024px) {
  .section {
    padding: 128px 32px;
  }
  .section--pt-0 {
    padding-top: 0;
  }
  .section--px-0 {
    padding-inline: 32px;
  }
}

/* FAQ 区块间距更紧凑（gap-4 sm:gap-4） */
.section--faq {
  gap: 16px;
}

/* ---------- Hero ---------- */
.hero-title {
  max-width: 36rem; /* max-w-xl */
  font-size: 30px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--ui-text-highlighted);
  text-wrap: pretty;
}

.hero-description {
  margin-top: 8px;
  max-width: 42rem; /* max-w-2xl */
  font-size: 16px;
  line-height: 1.5;
  color: var(--ui-text-muted);
  text-wrap: pretty;
}

@media (min-width: 640px) {
  .hero-title {
    font-size: 36px;
    line-height: 1.11111;
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: 48px;
    line-height: 1;
  }
}

/* ---------- 项目卡片 ---------- */
.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  border-radius: 8px;
}

.project-card:has(> .card-overlay:focus-visible) {
  outline: 3px solid color-mix(in oklab, var(--ui-primary) 25%, transparent);
}

.card-text {
  display: flex;
  flex-direction: column;
  flex: 1;
  align-items: flex-start;
  order: 2;
}

.card-image {
  order: 1;
}

.card-year {
  display: inline-flex;
  align-items: center;
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.42857;
  color: var(--ui-text-muted);
}

.card-title {
  font-size: 16px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--ui-text-highlighted);
  text-wrap: pretty;
}

.card-description {
  margin-top: 4px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ui-text-muted);
  text-wrap: pretty;
}

.card-footer {
  padding-top: 16px;
  margin-top: auto;
}

.view-link {
  display: flex;
  align-items: center;
  border-radius: 6px;
  font-size: 14px;
  line-height: 1.42857;
  color: var(--ui-primary);
  transition: color 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.view-link:hover {
  color: var(--ui-text);
}

.view-link:focus-visible {
  outline: 3px solid color-mix(in oklab, var(--ui-primary) 25%, transparent);
}

.card-overlay {
  position: absolute;
  inset: 0;
}

.card-overlay:focus {
  outline: none;
}

.view-link svg {
  width: 16px;
  height: 16px;
  margin-left: 4px;
  opacity: 0;
  transform: translateX(0);
  transition:
    opacity 0.15s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card:hover .view-link svg {
  opacity: 1;
  transform: translateX(4px);
}

.card-image img {
  width: 100%;
  height: 192px; /* h-48 */
  object-fit: cover;
  border-radius: 8px;
}

@media (min-width: 1024px) {
  .project-card {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
    row-gap: 16px;
    align-items: center;
  }
  .card-text {
    order: 1;
  }
  .card-image {
    order: 2;
  }
  .project-card--reverse .card-text {
    order: 2;
  }
  .project-card--reverse .card-image {
    order: 1;
  }
}

/* ---------- 滚动进场动画 ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(10px);
}

.js .reveal.in-view {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 0.3s cubic-bezier(0.32, 0.72, 0, 1),
    transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
}

/* ---------- 客户评价轮播 ---------- */
.carousel {
  position: relative;
  outline: none;
}

.carousel-viewport {
  overflow: hidden;
  max-width: 56rem;
  margin-inline: -16px;
  background-color: color-mix(in oklab, var(--ui-bg-elevated) 50%, transparent);
}

@media (min-width: 640px) {
  .carousel-viewport {
    margin-inline: -48px;
  }
}

@media (min-width: 1024px) {
  .carousel-viewport {
    margin-inline: -64px;
  }
}

.carousel-track {
  display: flex;
  align-items: flex-start;
  margin-inline-start: -16px;
  will-change: transform;
}

.carousel-track.transition {
  transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
}

.carousel-slide {
  flex: 0 0 100%;
  min-width: 0;
  padding-inline-start: 16px;
}

.testimonial {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding: 48px 24px;
}

@media (min-width: 640px) {
  .testimonial {
    padding-inline: 48px;
  }
}

@media (min-width: 1024px) {
  .testimonial {
    padding-inline: 64px;
  }
}

.quote {
  position: relative;
  font-size: 16px;
  line-height: 1.5;
  text-align: center;
  color: var(--ui-text-muted);
  text-wrap: balance;
  quotes: '“' '”';
}

.quote::before {
  content: open-quote;
  position: absolute;
  display: inline-block;
  font-size: 48px;
  line-height: 1;
  color: var(--ui-text-dimmed);
  margin-left: -24px;
  margin-top: -8px;
}

.quote::after {
  content: close-quote;
  position: absolute;
  display: inline-block;
  font-size: 48px;
  line-height: 1;
  color: var(--ui-text-dimmed);
  margin-left: 4px;
  margin-top: 4px;
}

@media (min-width: 1024px) {
  .quote::before {
    font-size: 72px;
    margin-left: -40px;
    margin-top: -16px;
  }
  .quote::after {
    font-size: 72px;
    margin-left: 8px;
    margin-top: 0;
  }
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.testimonial-author img {
  width: 40px;
  height: 40px;
  border-radius: 9999px;
  object-fit: cover;
  background-color: var(--ui-bg-elevated);
  flex-shrink: 0;
}

.author-name {
  font-size: 16px;
  line-height: 1.5;
  font-weight: 500;
  color: var(--ui-text-highlighted);
}

.author-description {
  font-size: 14px;
  line-height: 1.42857;
  color: var(--ui-text-muted);
}

.carousel-dots {
  position: absolute;
  inset-inline: 0;
  bottom: -28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.carousel-dot {
  width: 12px;
  height: 12px;
  padding: 0;
  border-radius: 9999px;
  background-color: var(--ui-bg-accented);
  transition: background-color 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-dot[data-active] {
  background-color: var(--ui-bg-inverted);
}

/* ---------- FAQ ---------- */
.faq-title,
.contact-title {
  font-size: 20px;
  line-height: 1.4;
  font-weight: 500;
  letter-spacing: -0.025em;
  color: var(--ui-text-highlighted);
  text-wrap: pretty;
}

.faq-description,
.contact-description {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.42857;
  color: var(--ui-text-muted);
}

@media (min-width: 1024px) {
  .faq-title,
  .contact-title {
    font-size: 24px;
    line-height: 1.33333;
  }
}

.faq-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
}

.faq-tab {
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.42857;
  color: var(--ui-text-muted);
  transition:
    color 0.15s cubic-bezier(0.4, 0, 0.2, 1),
    background-color 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-tab:hover {
  background-color: color-mix(in oklab, var(--ui-bg-muted) 50%, transparent);
}

.faq-tab[data-active] {
  color: var(--ui-text-highlighted);
  background-color: color-mix(in oklab, var(--ui-bg-elevated) 60%, transparent);
}

.faq-group {
  display: none;
}

.faq-group[data-active] {
  display: block;
}

.faq-item {
  border: none;
}

.faq-trigger {
  display: flex;
  flex: 1;
  align-items: center;
  gap: 6px;
  width: 100%;
  min-width: 0;
  padding: 14px 16px;
  margin-bottom: 8px;
  border-radius: 8px;
  font-size: 16px;
  line-height: 1.5;
  font-weight: 500;
  text-align: start;
  color: var(--ui-text);
  background-color: color-mix(in oklab, var(--ui-bg-elevated) 60%, transparent);
  transform: translateZ(0);
  transition: background-color 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-trigger:hover {
  background-color: color-mix(in oklab, var(--ui-bg-muted) 50%, transparent);
}

.faq-trigger:focus-visible {
  outline: 3px solid color-mix(in oklab, var(--ui-primary) 25%, transparent);
  outline-offset: 0;
}

.faq-label {
  text-align: start;
  overflow-wrap: break-word;
}

.faq-trigger svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-left: auto;
  color: var(--ui-text-muted);
  transform: rotate(0deg);
  transition: transform 0.2s;
}

.faq-item[data-open] .faq-trigger svg {
  transform: rotate(135deg);
}

.faq-content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.2s ease-out;
}

.faq-item[data-open] .faq-content {
  grid-template-rows: 1fr;
}

.faq-content > div {
  overflow: hidden;
}

.faq-answer {
  padding-inline: 16px;
  padding-bottom: 14px;
  font-size: 14px;
  line-height: 1.42857;
  color: var(--ui-text);
}

/* ---------- 联系方式 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 16px;
}

@media (min-width: 640px) {
  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  border-radius: 8px;
  border: 1px solid var(--ui-border-muted);
  background-color: color-mix(in oklab, var(--ui-bg-elevated) 40%, transparent);
  transition: border-color 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-card:hover {
  border-color: var(--ui-text-dimmed);
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  color: var(--ui-text);
  background-color: color-mix(in oklab, var(--ui-bg-elevated) 60%, transparent);
  transition: color 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-card:hover .contact-icon {
  color: var(--ui-primary);
}

.contact-icon svg {
  width: 20px;
  height: 20px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.contact-label {
  font-size: 14px;
  line-height: 1.42857;
  color: var(--ui-text-muted);
}

.contact-value {
  font-size: 16px;
  line-height: 1.5;
  font-weight: 500;
  color: var(--ui-text-highlighted);
  overflow-wrap: anywhere;
}

a.contact-value {
  border-radius: 6px;
  transition: color 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

a.contact-value:hover {
  color: var(--ui-primary);
}

a.contact-value:focus-visible {
  outline: 3px solid color-mix(in oklab, var(--ui-primary) 25%, transparent);
}

/* ---------- 页脚 ---------- */
.site-footer {
  z-index: 10;
  background-color: var(--ui-bg);
}

.footer-container {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
}

@media (min-width: 1024px) {
  .footer-container {
    padding-block: 16px;
  }
}

.footer-link {
  border-radius: 6px;
  font-size: 12px;
  line-height: 1.33333;
  color: var(--ui-text-muted);
  transition: color 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.footer-link:hover {
  color: var(--ui-text);
}