/* ============================================================
   APPEARANCE INSPECTION PAGE — 外观检测
   namespace: .ai-*
   reuses .sa-hero / .sa-head from smart-applying.css
   ============================================================ */

/* ---------- HERO tags (replaces sa-hero-stats) ---------- */
.ai-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 36px 0 0;
}
.ai-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 18px 11px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(30, 160, 151, 0.28);
  box-shadow: 0 4px 14px rgba(15, 30, 60, 0.05);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-2);
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.ai-hero-tag .tk {
  width: 22px;
  height: 22px;
  border-radius: 7px;
  background: rgba(30, 160, 151, 0.14);
  color: var(--green-600);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.ai-hero-tag:nth-child(2) .tk {
  background: rgba(22, 80, 168, 0.12);
  color: var(--blue);
}
@media (max-width: 920px) {
  .ai-hero-tag { white-space: normal; }
}

/* ============================================================
   2 · 三大核心检测场景
   ============================================================ */
.ai-scenes {
  background: white;
  padding: clamp(80px, 9vw, 130px) 0;
}
.ai-scene-stack {
  display: flex;
  flex-direction: column;
  gap: clamp(48px, 6vw, 80px);
}
.ai-scene {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  align-items: stretch;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  overflow: hidden;
}
.ai-scene-text {
  padding: clamp(30px, 3.4vw, 48px);
  border-right: 1px solid var(--line);
}
.ai-scene-media-wrap { display: contents; }

.ai-scene-index {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.18em;
  margin-bottom: 20px;
}
.ai-scene-index::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--green);
}
.ai-scene-index .no {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}
.ai-scene-index .en {
  color: var(--green-600);
  text-transform: uppercase;
  white-space: nowrap;
}
.ai-scene-text h3 {
  font-size: clamp(26px, 2.6vw, 34px);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}
.ai-scene-text > p {
  font-size: 15.5px;
  color: var(--muted);
  line-height: 1.75;
  margin: 0;
  max-width: 460px;
}

/* metric chips (尺寸检测) */
.ai-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}
.ai-metric {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px 22px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--line);
}
.ai-metric .v {
  font-family: var(--font-en);
  font-size: 27px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.ai-metric .v .u {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-2);
  margin-left: 2px;
}
.ai-metric .k {
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* tag groups (外观 / 防错) */
.ai-taggroup {
  margin-top: 26px;
}
.ai-taggroup + .ai-taggroup {
  margin-top: 20px;
}
.ai-tg-label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--green-600);
  letter-spacing: 0.01em;
  margin-bottom: 11px;
}
.ai-taggroup .ai-mod-tags {
  margin-top: 0;
}

/* sub-categories (防错检测) */
.ai-subcats {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 26px;
}
.ai-subcat {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  border-radius: 12px;
  background: #FBFBF8;
  border: 1px solid var(--line);
}
.ai-subcat .sc-ic {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: rgba(22, 80, 168, 0.10);
  color: var(--blue);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.ai-subcat:first-child .sc-ic {
  background: rgba(30, 160, 151, 0.12);
  color: var(--green-600);
}
.ai-subcat .sc-body strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 3px;
}
.ai-subcat .sc-body span {
  font-size: 13.5px;
  color: var(--muted);
  letter-spacing: 0.01em;
}

/* media placeholders */
.ai-scene-media {
  display: grid;
  gap: 16px;
  align-content: start;
  padding: clamp(26px, 3vw, 44px);
}
.ai-scene-media.mosaic {
  grid-template-columns: 0.92fr 1.08fr;
}
.ai-scene-media.mosaic .ai-shot { aspect-ratio: 2 / 1; }
.ai-scene-media.mosaic .ai-shot.tall {
  grid-row: 1 / 3;
  aspect-ratio: auto;
}
.ai-scene-media.single {
  grid-template-columns: 1fr;
}
.ai-scene-media.single .ai-shot { aspect-ratio: 16 / 10; }
.ai-scene-media.dual {
  grid-template-columns: 1fr 1fr;
}
.ai-scene-media.dual .ai-shot { aspect-ratio: 1 / 1; }
.ai-shot {
  position: relative;
  border-radius: 14px;
  border: 1px solid var(--line);
  background-color: #EEF2EE;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(40, 88, 66, 0.045) 0,
    rgba(40, 88, 66, 0.045) 9px,
    transparent 9px,
    transparent 19px
  );
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 9px;
  text-align: center;
  padding: 16px;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.ai-shot:hover {
  border-color: rgba(30, 160, 151, 0.40);
  box-shadow: 0 10px 26px rgba(15, 40, 30, 0.07);
}
.ai-shot .ai-shot-tag {
  font-family: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(45, 75, 60, 0.5);
}
.ai-shot .ai-shot-cap {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.ai-shot .ai-shot-sub {
  font-family: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;
  font-size: 10.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* shots with a real image */
.ai-shot.has-img {
  padding: 0;
  display: block;
  background-image: none;
  background-color: #0c0f0d;
}
.ai-shot.has-img > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.ai-shot-label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  text-align: left;
  padding: 30px 16px 13px;
  background: linear-gradient(to top, rgba(8, 16, 12, 0.85) 0%, rgba(8, 16, 12, 0.45) 55%, rgba(8, 16, 12, 0) 100%);
}
.ai-shot.has-img .ai-shot-tag { color: rgba(255, 255, 255, 0.66); }
.ai-shot.has-img .ai-shot-cap { color: #fff; }
.ai-shot.has-img .ai-shot-sub { color: rgba(255, 255, 255, 0.66); }

/* beautified software-UI showcase (尺寸检测) */
.ai-shot-stage {
  border-radius: 18px;
  padding: clamp(18px, 2.4vw, 34px);
  border: 1px solid var(--line);
  background:
    radial-gradient(130% 120% at 18% -10%, rgba(30, 160, 151, 0.14), transparent 55%),
    linear-gradient(140deg, #f4f7f5 0%, #e7eeea 100%);
}
.ai-screenshot {
  border-radius: 11px;
  overflow: hidden;
  background: #0b1226;
  border: 1px solid rgba(12, 30, 55, 0.14);
  box-shadow: 0 28px 58px -24px rgba(10, 26, 50, 0.5), 0 5px 16px rgba(10, 26, 50, 0.12);
}
.ai-screenshot img {
  display: block;
  width: 100%;
  height: auto;
}
.ai-shot-stage-cap {
  display: block;
  margin-top: 16px;
  text-align: center;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--muted);
}

@media (max-width: 920px) {
  .ai-scene {
    grid-template-columns: 1fr;
  }
  .ai-scene-text {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }
  .ai-scene-text > p { max-width: none; }
}
@media (max-width: 560px) {
  .ai-scene-media.mosaic,
  .ai-scene-media.dual {
    grid-template-columns: 1fr;
  }
  .ai-scene-media.mosaic .ai-shot,
  .ai-scene-media.mosaic .ai-shot.tall {
    grid-row: auto;
    aspect-ratio: 16 / 10;
  }
}

/* ============================================================
   3 · 从成像到判定的一体化检测链路
   ============================================================ */
.ai-chain {
  position: relative;
  background: #F4F7FC;
  padding: clamp(80px, 9vw, 130px) 0;
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  isolation: isolate;
}
.ai-chain-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(22, 80, 168, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 80, 168, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(75% 60% at 50% 38%, black 30%, transparent 95%);
  -webkit-mask-image: radial-gradient(75% 60% at 50% 38%, black 30%, transparent 95%);
  pointer-events: none;
}
.ai-chain .container { position: relative; z-index: 1; }

.ai-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: 0;
  max-width: 1120px;
  margin: 0 auto;
}
.ai-node {
  position: relative;
  background: white;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px 24px 26px;
  text-align: center;
  box-shadow: 0 6px 18px rgba(15, 30, 60, 0.05);
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.ai-node:hover {
  transform: translateY(-3px);
  border-color: rgba(30, 160, 151, 0.4);
  box-shadow: 0 16px 34px rgba(15, 30, 60, 0.10);
}
.ai-node-ic {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  background: rgba(30, 160, 151, 0.10);
  color: var(--green-600);
}
.ai-node.blue .ai-node-ic {
  background: rgba(22, 80, 168, 0.10);
  color: var(--blue);
}
.ai-node-step {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin-bottom: 8px;
}
.ai-node h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 8px;
}
.ai-node p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
  margin: 0;
}
.ai-arrow {
  display: grid;
  place-items: center;
  width: 52px;
  color: rgba(22, 80, 168, 0.4);
  align-self: center;
}
.ai-arrow svg { display: block; }

/* co-optimisation band */
.ai-coop {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  max-width: 1120px;
  margin: 36px auto 0;
  padding: 18px 28px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(30, 160, 151, 0.08), rgba(22, 80, 168, 0.08));
  border: 1px solid rgba(22, 80, 168, 0.16);
}
.ai-coop .ce {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
}
.ai-coop .swap {
  color: var(--blue);
  display: grid;
  place-items: center;
}
.ai-coop .ctxt {
  font-size: 14px;
  color: var(--ink-2);
  letter-spacing: 0.01em;
}
.ai-coop .ctxt b { color: var(--green-600); }

@media (max-width: 920px) {
  .ai-flow {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .ai-arrow { display: none; }
}
@media (max-width: 520px) {
  .ai-flow { grid-template-columns: 1fr; }
}

/* ============================================================
   3b · 核心优势
   ============================================================ */
.ai-adv {
  background: #fff;
  padding: clamp(80px, 9vw, 130px) 0;
}
.ai-adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: clamp(40px, 5vw, 64px);
}
.ai-adv-card {
  display: flex;
  flex-direction: column;
  padding: 30px 26px 28px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}
.ai-adv-card:hover {
  border-color: rgba(30, 160, 151, 0.4);
  box-shadow: 0 16px 36px -16px rgba(15, 40, 30, 0.16);
  transform: translateY(-3px);
}
.ai-adv-no {
  font-family: var(--font-en);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--green-600);
}
.ai-adv-card h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  margin: 18px 0 11px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.ai-adv-card p {
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.75;
  margin: 0;
}
@media (max-width: 980px) {
  .ai-adv-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 540px) {
  .ai-adv-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   4 · 模块化设计 + 四种异常处理闸口
   ============================================================ */
.ai-control {
  background: #FBFBF8;
  padding: clamp(80px, 9vw, 130px) 0;
}
.ai-control-grid {
  display: flex;
  flex-direction: column;
  gap: clamp(40px, 5vw, 64px);
}

/* modular design panel */
.ai-modular {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(34px, 5vw, 76px);
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: clamp(32px, 4vw, 50px);
  overflow: hidden;
}
.ai-modular::before {
  content: none;
}
.ai-modular > * { position: relative; }
.ai-block-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green-600);
  margin-bottom: 14px;
}
.ai-block-eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--green);
}
.ai-modular h3 {
  font-size: clamp(24px, 2.4vw, 30px);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}
.ai-modular-desc {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.78;
  margin: 0 0 24px;
  max-width: 460px;
}
.ai-mod-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.ai-mod-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 2px 0;
}
.ai-mod-item .mi-ic {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(30, 160, 151, 0.12);
  color: var(--green-600);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.ai-mod-item .mi-body strong {
  display: block;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}
.ai-mod-item .mi-body span {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.55;
}
.ai-mod-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
.ai-mod-tags span {
  font-size: 13px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 8px;
  background: rgba(30, 160, 151, 0.10);
  color: var(--green-600);
  letter-spacing: 0.02em;
}
.ai-modular .ai-mod-tags span {
  padding: 8px 16px;
  border-radius: 999px;
}

/* gates */
.ai-gates {
  display: flex;
  flex-direction: column;
}
.ai-gates-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 18px;
}
.ai-gates-head h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--ink);
  margin: 0;
}
.ai-gates-head .gh-en {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.ai-gate-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.ai-gate {
  position: relative;
  background: white;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 26px 24px 24px;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
  display: flex;
  flex-direction: column;
}
.ai-gate:hover {
  transform: translateY(-3px);
  border-color: rgba(30, 160, 151, 0.4);
  box-shadow: 0 16px 34px rgba(15, 40, 30, 0.10);
}
.ai-gate-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.ai-gate-ic {
  width: 48px;
  height: 48px;
  border-radius: 13px;
  background: #0E1A14;
  color: #34C9BD;
  display: grid;
  place-items: center;
}
.ai-gate-no {
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: rgba(20, 40, 30, 0.26);
}
.ai-gate h4 {
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 9px;
}
.ai-gate p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
}

.ai-control-note {
  margin: 36px auto 0;
  max-width: 760px;
  text-align: center;
  font-size: 15px;
  color: var(--ink-2);
  line-height: 1.7;
}
.ai-control-note b { color: var(--green-600); }

@media (max-width: 860px) {
  .ai-modular { grid-template-columns: 1fr; gap: 30px; align-items: start; }
  .ai-modular-desc { max-width: none; }
  .ai-gate-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .ai-gate-grid { grid-template-columns: 1fr; }
}