/* A · 冷白 / 雾蓝. Append to the original site styles; color changes only. */
:root {
  --cold-white-join: #eef4fb;
  --cold-white-hero: linear-gradient(165deg,
    #fff 0%, #f7fafe 20%, #e9f1fb 46%, #dce8f6 76%, #fff 100%);
  --cold-white-surface: linear-gradient(165deg,
    #fff 0%, #f6f9fe 22%, #eaf2fb 48%, #e0ebf7 77%, #fff 100%);
  --cold-white-soft: linear-gradient(150deg,
    #fff 0%, #f7faff 24%, #edf4fc 52%, #e4edf8 80%, #fff 100%);
}
body { background: #fff; color: #1d1d1f; }
.nav {
  background: rgba(255, 255, 255, .9);
  border-bottom-color: rgba(30, 40, 55, .07);
  box-shadow: none;
}
.hero {
  background:
    linear-gradient(180deg, transparent calc(100% - 140px), var(--cold-white-join) 100%),
    var(--cold-white-hero);
}
.hero-heading { color: #1d1d1f; background: none; }
.hero-eyebrow, .hero .sub { color: #6e747c; }
.hero-shot figcaption { color: #737a83; }
.equipment-link { box-shadow: 0 22px 60px -42px rgba(30, 45, 65, .38); }
.equipment-controls { background: #e9edf2; }
.equipment-switch[aria-pressed="true"] {
  background: #fff; color: #1d1d1f;
  box-shadow: 0 2px 6px rgba(27, 37, 49, .07);
}
.hero .links .link-cta:first-child,
.nav-links li:last-child a,
.repair-section .repair-button { background: #0071e3; box-shadow: none; }
.hero .links .link-cta:first-child:hover,
.repair-section .repair-button:hover { background: #0077ed; }
.repair-services {
  margin-bottom: 0;
  background: linear-gradient(180deg,
    var(--cold-white-join) 0%, #e9f1fb 30%, #e0ebf7 65%, var(--cold-white-join) 100%);
}
.repair-service-card { background: #fff; box-shadow: none; }
#tech {
  background: linear-gradient(180deg,
    var(--cold-white-join) 0%, #eaf2fb 30%, #e0ebf7 65%, #f5f9fe 90%, #fff 100%);
  max-width: none; width: 100%;
  /* Paint the former collapsed gaps without moving the content below them. */
  margin: 0; padding-block: 100px 118px;
  padding-inline: max(24px, calc((100% - 1120px) / 2));
}
.grid-wrap, #about { background: var(--cold-white-surface); }
#repair-verification {
  background: linear-gradient(180deg, #fff 0%, #f5f9fe 25%, #e6eff9 70%, var(--cold-white-join) 100%);
}
.scientist {
  background: linear-gradient(180deg, var(--cold-white-join) 0%, #e5eef9 32%, #f3f7fc 70%, #fff 100%);
}
.repair-cooperation {
  background: linear-gradient(180deg, #fff 0%, #f6f9fe 22%, #e9f1fb 48%, #e0ebf7 77%, var(--cold-white-join) 100%);
}
.contact {
  background: linear-gradient(180deg, #f5f8fc 0%, #edf2f9 46%, #e8eef7 100%);
  box-shadow: inset 0 1px 0 rgba(107, 126, 153, .16);
}
.contact .sub { color: #6e7784; }
.contact-rows {
  max-width: 570px;
  padding: 0 24px;
  border: 1px solid rgba(128, 147, 174, .2);
  border-radius: 20px;
  background: rgba(255, 255, 255, .78);
  box-shadow: 0 16px 40px -30px rgba(40, 62, 94, .22), inset 0 1px 0 rgba(255, 255, 255, .9);
}
.contact .crow { border-bottom-color: #e1e7f0; }
.contact .crow:last-child { border-bottom: 0; }
.card, .atag, .repair-form-panel {
  background: rgba(255, 255, 255, .9);
  box-shadow: 0 0 0 1px rgba(81, 110, 149, .07), 0 16px 34px -28px rgba(32, 61, 99, .2);
}
#apps {
  background: linear-gradient(135deg, #10151e 0%, #1b293a 55%, #25364b 100%);
  color: #f5f5f7;
}
#apps .eyebrow { color: #a9bcd2 !important; }
#apps .sub { color: #adbdd0; }
#apps .apps-title-accent {
  background: linear-gradient(120deg, #7ab8ff, #a78bff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.apps-panel {
  background: rgba(208, 222, 242, .025);
  box-shadow: none;
}
.appcard {
  background: linear-gradient(135deg, rgba(255, 255, 255, .045), rgba(255, 255, 255, .02));
  border-color: rgba(255, 255, 255, .08);
}
.appcard .n { background: rgba(185, 204, 226, .08); color: #b6cbe1; }
.appcard .proc { color: #b6cbe1; }
.appcard .csub { color: #a3abb7; }
.stats { background: linear-gradient(125deg, #10151e 0%, #243246 60%, #111a27 100%); }
/* Retain the original blue-to-violet emphasis explicitly preferred by the user. */
.stat .big {
  background: linear-gradient(120deg, #7ab8ff, #a78bff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat .cap { color: #a9afb8; }
.stat .note { color: #858d98; }
.pbd { background: linear-gradient(140deg, #0b1018 0%, #182537 60%, #28394d 100%); }
.pbd::before { background-image: none; }
.pbd-frame {
  border-color: rgba(205, 217, 232, .15);
  box-shadow: 0 22px 60px -40px rgba(0, 0, 0, .6);
}
.pbd-text h2 {
  background: linear-gradient(120deg, #7ab8ff, #a78bff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.pbd-eyebrow, .pbd-sign span { color: #b7cbe0; }
.pbd-quote { border-left-color: rgba(183, 203, 224, .28); }
.credo {
  background:
    radial-gradient(ellipse 110% 170% at 85% 100%, rgba(55, 78, 108, .35), transparent 78%),
    linear-gradient(135deg, #10151e 0%, #203044 65%, #131d2b 100%);
}
.credo-mark { color: #3c4653; }
.credo-en {
  background: linear-gradient(120deg, #7ab8ff, #a78bff);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.credo-zh { color: #adb4bf; }
.credo-by { color: #87909d; }
footer { background: linear-gradient(180deg, #e8eef7, #edf3f9); border-top-color: transparent; }
@media (max-width: 760px) {
  .nav-links { background: rgba(255, 255, 255, .98); border-bottom-color: #e5e5e7; }
  #tech { padding-block: 70px 72px; }
  .contact-rows { padding-inline: 18px; border-radius: 16px; }
}

/* Responsive refinements: retain the approved desktop composition. */
@media (max-width: 960px) {
  .pbd-inner { flex-direction: column; gap: 40px; text-align: center; }
  .pbd-figure { flex: 0 0 auto; width: min(360px, 80vw); }
  .pbd-text { width: 100%; }
  .pbd-text h2 { max-width: 680px; margin-inline: auto; text-wrap: balance; }
  .pbd-body p, .pbd-quote { margin-inline: auto; }
  .pbd-quote { text-align: left; }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 76px; }
  .nav-inner { gap: 8px; padding-inline: 18px; }
  .nav-links { top: var(--nav-h); }
  .nav-links li:last-child a { min-height: 44px; }

  #apps { min-height: 0; padding: 72px 20px; }
  #apps h2 { font-size: clamp(30px, 7.7vw, 36px); line-height: 1.2; text-wrap: balance; }
  #apps .apps-title-accent { display: inline-block; }
  #apps .sub { font-size: 17px; line-height: 1.6; }
  .apps-panel { width: 100%; margin-top: 32px; padding: 12px; border-radius: 20px; }
  .appgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .appcard { min-width: 0; min-height: 156px; padding: 18px 14px; border-radius: 14px; }
  .appcard h3 { font-size: 17px; line-height: 1.4; text-wrap: balance; }
  .appcard .n { width: 28px; height: 28px; font-size: 13px; margin-bottom: 12px; }
  .appcard .proc { font-size: 13px; line-height: 1.5; }
  .appcard .csub { font-size: 12px; }

  .stats { padding: 72px 20px; }
  .stats h2 { font-size: 32px; margin-bottom: 26px; }
  .stat-grid { grid-template-columns: 1fr; gap: 0; max-width: 460px; }
  .stat { display: grid; grid-template-columns: 104px minmax(0, 1fr); gap: 20px; align-items: center; padding: 22px 0; border-bottom: 1px solid rgba(207, 222, 242, .12); text-align: left; }
  .stat:last-child { border-bottom: 0; }
  .stat .big { font-size: 32px; line-height: 1.25; }
  .stat .cap { margin-top: 0; font-size: 15px; line-height: 1.65; }

  .pbd { padding: 76px 20px; }
  .pbd-inner { gap: 32px; }
  .pbd-figure { width: min(288px, 82vw); }
  .pbd-text h2 { font-size: clamp(26px, 7vw, 32px); line-height: 1.25; }
  .pbd-body p { font-size: 16px; line-height: 1.8; text-align: left; }
  .pbd-quote p { font-size: 14px; }
  .pbd-sign { font-size: 15px; line-height: 1.65; }

  .credo { padding: 80px 20px; }
  .credo-en { font-size: clamp(25px, 6.8vw, 31px); line-height: 1.25; }
  .credo-mark { font-size: 64px; height: 30px; }
  .credo-mark-close { height: 44px; margin-top: 14px; }
  .credo-zh { margin-top: 20px; font-size: 16px; line-height: 1.7; }
  .credo-by { margin-top: 24px; font-size: 12px; line-height: 1.7; }

  .repair-form .repair-button { width: 100%; }
  .contact { padding: 76px 20px; }
  .contact h2 { font-size: 34px; }
  .contact .sub { font-size: 18px; line-height: 1.6; margin-bottom: 28px; }
  .contact .crow { flex-direction: column; align-items: stretch; gap: 7px; padding: 18px 0; }
  .contact .crow .k { font-size: 13px; line-height: 1.5; color: #697585; }
  .contact .crow .v { min-width: 0; text-align: left; font-size: 16px; line-height: 1.7; overflow-wrap: anywhere; }
  .contact .crow.addr .v { max-width: none; font-size: 15px; line-height: 1.8; word-break: normal; }
  .contact .crow a { overflow-wrap: anywhere; }
}
@media (max-width: 359px) {
  .appgrid { grid-template-columns: 1fr; }
  .appcard { min-height: 132px; padding: 18px; }
  .appcard h3 { font-size: 19px; }
  .stat { grid-template-columns: 96px minmax(0, 1fr); gap: 14px; }
  .stat .big { font-size: 30px; }
  .stat .cap { font-size: 14px; }
  .contact-rows { padding-inline: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}