/* 内页 · 首屏、面包屑、子导航、图文、特性、数据、卡片、收尾 CTA */

.nav__link.is-current { color: var(--ink-hi); }
.section { --sec-bg: var(--bg-0); }
.section--raised { --sec-bg: var(--bg-1); }
.section--paper { --sec-bg: var(--paper); }
.section--black { --sec-bg: #000; }
.section--tight { padding-block: clamp(56px, 7vw, 104px); }
:is(.section, .phero--short) + .section--flush { padding-top: 0; }
[hidden]:not([data-totop]) { display: none !important; }
/* 同一版块内的多个内容块：块与块之间留出间距，后接的小标题同样适用 */
.container > :is(.feats, .split, .steps, .cards, .kpis, .spec, .tbl-wrap, .formula, .scenes, .gallery, .apis, .mgroups, .brief, .facts, .code, .stack)
  + :is(.feats, .split, .steps, .cards, .kpis, .spec, .tbl-wrap, .formula, .scenes, .gallery, .apis, .mgroups, .brief, .facts, .code, .stack, .head) {
  margin-top: clamp(56px, 7vw, 104px);
}

/* 首屏：默认是照片铺底、文案左下 */
.phero {
  position: relative; isolation: isolate; overflow: hidden; display: grid; align-content: end;
  min-height: clamp(540px, 82vh, 860px); padding: calc(var(--header-h) + var(--s-9)) 0 clamp(56px, 8vw, 112px);
  background: var(--bg-0);
}
.phero__media { position: absolute; inset: 0; z-index: -1; }
.phero__media > img { width: 100%; height: 100%; object-fit: cover; }
.phero__media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgb(4 7 11 / 0.8), rgb(4 7 11 / 0.36) 52%, rgb(4 7 11 / 0.08)),
    linear-gradient(rgb(4 7 11 / 0.5), transparent 26%, transparent 60%, rgb(4 7 11 / 0.7));
}
.phero__crumbs { position: absolute; inset: calc(var(--header-h) + 18px) 0 auto; }
.phero__copy { display: grid; justify-items: start; gap: var(--s-4); }
.phero h1 { font-size: clamp(36px, 4.8vw, 72px); max-width: 15em; }
.phero__lead { font-size: var(--fs-lead); color: var(--ink-mid); max-width: 620px; }
.phero .links { margin-top: var(--s-3); }
.phero__chip { position: absolute; right: var(--gutter); bottom: var(--s-5); }

/* 首屏 · 短版：列表页、表单页，不放大图 */
.phero--short {
  min-height: 0; align-content: start;
  padding: calc(var(--header-h) + clamp(88px, 10vw, 148px)) 0 clamp(56px, 6vw, 88px);
  background: radial-gradient(60% 90% at 85% 0%, color-mix(in oklch, var(--brand) 26%, transparent), transparent 70%), var(--bg-0);
}
.phero--short .phero__media > img { opacity: 0.32; }
.phero--short .phero__media::after { background: linear-gradient(90deg, var(--bg-0) 18%, rgb(10 15 23 / 0.4)), linear-gradient(transparent 60%, var(--bg-0)); }

/* 首屏 · 产品舞台：标题居中在上，产品图压在下半屏 */
.phero--stage {
  align-content: start; text-align: center; min-height: clamp(660px, 100svh, 1000px);
  padding-top: calc(var(--header-h) + clamp(56px, 9vh, 112px));
  background: radial-gradient(70% 60% at 50% 82%, #3a4657, #141c27 58%, #06090d);
}
.phero--stage .phero__copy { justify-items: center; }
.phero--stage .phero__lead { margin-inline: auto; }
.phero--stage .links { justify-content: center; }
.phero--black { background: #000; }
.phero__figure {
  position: absolute; z-index: -1; left: 50%; bottom: 7%; translate: -50% 0; width: auto; max-width: 86vw;
  height: min(50%, 100% - 440px); object-fit: contain; filter: drop-shadow(0 40px 50px rgb(0 0 0 / 0.5));
}
.phero__figure--render {
  bottom: 0; height: min(66%, 100% - 340px); max-width: none; filter: none;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent), linear-gradient(transparent, #000 26%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent), linear-gradient(transparent, #000 26%);
  mask-composite: intersect;
}

/* 首屏 · 浅底：白底产品图，图文左右排 */
.phero--paper {
  align-content: center; min-height: clamp(560px, 78vh, 800px); color: var(--ink);
  padding: calc(var(--header-h) + var(--s-8)) 0 var(--s-8); background: linear-gradient(#fff, var(--paper));
}
.phero__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); align-items: center; gap: clamp(32px, 5vw, 80px); }
.phero__grid > figure img { width: 100%; mix-blend-mode: multiply; }
.phero--paper .phero__lead { color: var(--ink-2); }
.phero--paper .eyebrow { color: var(--brand); }
.phero--paper .btn--ghost { color: var(--ink); border-color: rgb(14 20 28 / 0.2); }
.phero--paper .btn--ghost:hover { border-color: var(--ink-2); }

/* 首屏 · 界面截图：标题居中，截图从底部露出 */
.phero--screen {
  min-height: 0; align-content: start; text-align: center; padding-bottom: 0;
  padding-top: calc(var(--header-h) + clamp(72px, 10vh, 128px));
  background: radial-gradient(50% 60% at 50% 100%, color-mix(in oklch, var(--brand) 34%, transparent), transparent 70%), var(--bg-0);
}
.phero--screen .phero__copy { justify-items: center; }
.phero--screen .links { justify-content: center; }
.phero__screen {
  width: min(1180px, 100% - 2 * var(--gutter)); margin: clamp(48px, 6vw, 80px) auto 0; border-radius: 12px 12px 0 0; overflow: hidden;
  box-shadow: 0 0 0 1px var(--line-strong), 0 -30px 120px -50px var(--brand);
  -webkit-mask-image: linear-gradient(#000 55%, transparent); mask-image: linear-gradient(#000 55%, transparent);
}
.phero__screen img { width: 100%; }

@media (max-width: 900px) {
  .phero__grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .phero { min-height: clamp(520px, 86svh, 720px); padding-bottom: var(--s-7); }
  .phero__media::after { background: linear-gradient(rgb(4 7 11 / 0.6), transparent 26%, rgb(4 7 11 / 0.5) 52%, rgb(4 7 11 / 0.94)); }
  .phero h1 { font-size: clamp(30px, 8.4vw, 40px); }
  .phero__chip { top: calc(var(--header-h) + 52px); bottom: auto; }
  .phero--short, .phero--screen, .phero--paper { min-height: 0; }
  .phero--stage { min-height: clamp(600px, 92svh, 760px); }
  .phero__figure { width: 92vw; height: auto; max-width: none; bottom: 8%; }
  .phero__figure--render { width: 150vw; bottom: 0; }
}

/* 面包屑 */
.crumbs ol { display: flex; flex-wrap: wrap; gap: 4px 0; font-size: 13px; color: var(--ink-lo); }
.crumbs li + li::before { content: "/"; margin: 0 10px; opacity: 0.6; }
.crumbs a { transition: color var(--t-fast) var(--ease); }
.crumbs a:hover { color: var(--ink-hi); }
.crumbs [aria-current] { color: var(--ink-mid); }
.phero--paper .crumbs ol { color: var(--ink-2); }
.phero--paper .crumbs a:hover, .phero--paper .crumbs [aria-current] { color: var(--ink); }
.phero--stage .phero__crumbs, .phero--screen .phero__crumbs { text-align: left; }

/* 产品页吸顶子导航 */
:root:has(.subnav) { scroll-padding-top: calc(var(--header-h) + 56px); }
.subnav {
  position: sticky; top: var(--header-h); z-index: 40; height: 56px;
  background: rgb(10 15 23 / 0.9); box-shadow: 0 1px 0 var(--line);
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
}
.subnav__in { height: 100%; display: flex; align-items: center; gap: var(--s-6); }
.subnav__name { font: 600 16px/1 var(--font-display); white-space: nowrap; }
.subnav__list { display: flex; gap: var(--s-5); margin-inline: auto; height: 100%; overflow-x: auto; scrollbar-width: none; }
.subnav__list::-webkit-scrollbar { display: none; }
.subnav__list a {
  display: flex; align-items: center; height: 100%; font-size: 14px; color: var(--ink-lo); white-space: nowrap;
  box-shadow: inset 0 -2px 0 transparent; transition: color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}
.subnav__list a:hover { color: var(--ink-hi); }
.subnav__list a[aria-current="true"] { color: var(--ink-hi); box-shadow: inset 0 -2px 0 var(--brand-hi); }
@media (max-width: 720px) {
  .subnav { height: 48px; }
  :root:has(.subnav) { scroll-padding-top: calc(var(--header-h) + 48px); }
  .subnav__name, .subnav .btn { display: none; }
  .subnav__in { width: 100%; padding-inline: var(--gutter); }
  .subnav__list { margin-inline: 0; gap: var(--s-5); }
}

/* 图文左右排 */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; gap: clamp(32px, 6vw, 96px); }
.split + .split { margin-top: clamp(64px, 8vw, 128px); }
.split--rev > :first-child { order: 2; }
.split--wide { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); }
.split__media { position: relative; overflow: hidden; border-radius: var(--r-card); background: var(--bg-2); }
.split__media > img { width: 100%; height: 100%; object-fit: cover; }
.split__media .chip { position: absolute; left: var(--s-3); top: var(--s-3); }
.split__media--paper { background: linear-gradient(#fff, var(--paper-2)); box-shadow: 0 0 0 1px var(--paper-line); }
.split__media--paper > img { object-fit: contain; mix-blend-mode: multiply; padding: 6%; }
.split__media--bare { background: none; border-radius: 0; overflow: visible; }
.split__media--bare > img { mix-blend-mode: multiply; }
.split__media figcaption, .figcap { margin-top: var(--s-3); font-size: 13px; color: var(--ink-lo); }
.section--paper .figcap { color: var(--ink-2); }
.split__text { display: grid; align-content: start; justify-items: start; gap: var(--s-4); }
.split__text h2 { font-size: var(--fs-h2); }
.split__text > p { font-size: var(--fs-lead); color: var(--ink-mid); }
.section--paper .split__text > p { color: var(--ink-2); }
@media (max-width: 900px) {
  .split, .split--wide { grid-template-columns: 1fr; }
  .split--rev > :first-child { order: 0; }
}

/* 勾选列表 */
.ticks { display: grid; gap: var(--s-3); margin-top: var(--s-2); }
.ticks li { position: relative; padding-left: 26px; color: var(--ink-mid); }
.ticks li::before {
  content: ""; position: absolute; left: 2px; top: 0.62em; width: 12px; height: 7px;
  border: solid var(--brand-hi); border-width: 0 0 1.6px 1.6px; rotate: -45deg; translate: 0 -60%;
}
.ticks b { color: var(--ink-hi); font-weight: 500; margin-right: 6px; }
.section--paper .ticks li { color: var(--ink-2); }
.section--paper .ticks li::before { border-color: var(--brand); }
.section--paper .ticks b { color: var(--ink); }

/* 特性格：细线分隔的 2/3/4 列 */
.feats {
  --cols: 3; display: grid; grid-template-columns: repeat(var(--cols), minmax(0, 1fr)); gap: 1px;
  background: var(--line); border-block: 1px solid var(--line);
}
.feats--2 { --cols: 2; }
.feats--4 { --cols: 4; }
.feat { display: grid; align-content: start; gap: var(--s-2); padding: var(--s-6) var(--s-5); background: var(--sec-bg); }
.feat__idx { font: 500 12px/1 var(--font-display); letter-spacing: 0.16em; color: var(--brand-hi); }
.feat h3 { font-size: clamp(18px, 1.5vw, 22px); }
.feat p { font-size: 15px; color: var(--ink-lo); }
.feat .num { font-size: clamp(30px, 3vw, 44px); line-height: 1.05; }
.section--paper .feats { background: var(--paper-line); border-color: var(--paper-line); }
.section--paper .feat__idx { color: var(--brand); }
.section--paper .feat p { color: var(--ink-2); }
@media (max-width: 1100px) { .feats--4 { --cols: 2; } }
@media (max-width: 900px) { .feats { --cols: 2; } }
@media (max-width: 560px) {
  .feats, .feats--4 { --cols: 1; }
  .feats > .feat { padding-inline: 0; }
}
/* 特性格两列时，奇数个的最后一格占满一行，避免露出空格 */
@media (min-width: 561px) and (max-width: 900px) {
  .feats:not(.feats--2) > .feat:last-child:nth-child(odd) { grid-column: 1 / -1; }
}
@media (min-width: 561px) and (max-width: 1100px) {
  .feats--4 > .feat:last-child:nth-child(odd), .feats--5 > .feat:last-child:nth-child(odd) { grid-column: 1 / -1; }
}

/* 数据：大数字 + 说明 */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: var(--s-5); }
.kpi { display: grid; gap: 6px; padding-top: var(--s-4); border-top: 1px solid var(--line-strong); }
.kpi .num { font-size: clamp(36px, 3.8vw, 56px); line-height: 1; color: var(--ink-hi); }
.kpi p { font-size: 14px; color: var(--ink-lo); }
.section--paper .kpi { border-color: rgb(14 20 28 / 0.16); }
.section--paper .kpi .num { color: var(--ink); }
.section--paper .kpi p { color: var(--ink-2); }
.kpis + .note { margin-top: var(--s-5); }
.kpis--band { padding: var(--s-6) 0 0; }

/* 卡片 */
.cards { --min: 280px; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(var(--min), 100%), 1fr)); gap: var(--s-4); }
.cards--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cards--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1100px) { .cards--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 900px) { .cards--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .cards--2, .cards--3, .cards--4 { grid-template-columns: 1fr; } }
.card {
  position: relative; display: grid; grid-template-rows: auto 1fr; overflow: hidden;
  border-radius: var(--r-card); background: var(--bg-2); box-shadow: inset 0 0 0 1px var(--line);
  transition: box-shadow var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.card:has(a:hover), .card:focus-within { box-shadow: inset 0 0 0 1px color-mix(in oklch, var(--brand-hi) 60%, transparent); }
.card__media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-1); }
.card__media > img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-slow) var(--ease); }
.card:has(h3 a:hover) .card__media > img { transform: scale(1.04); }
.card__media .chip { position: absolute; left: var(--s-3); top: var(--s-3); }
.card__media--paper { background: linear-gradient(#fff, var(--paper-2)); }
.card__media--paper > img { object-fit: contain; mix-blend-mode: multiply; padding: 8%; }
.card__body { display: grid; align-content: start; gap: var(--s-2); padding: var(--s-5); }
.card__meta { font-size: 13px; letter-spacing: 0.06em; color: var(--brand-hi); }
.card h3 { font-size: var(--fs-h3); }
.card h3 a::after { content: ""; position: absolute; inset: 0; }
.card p { font-size: 15px; color: var(--ink-lo); }
.card__foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--s-3); margin-top: auto; padding-top: var(--s-3); }
.card__foot > * { position: relative; z-index: 1; }
.card__kpi { display: flex; align-items: baseline; gap: var(--s-2); margin-top: var(--s-2); padding-top: var(--s-3); border-top: 1px solid var(--line); }
.card__kpi .num { font-size: 30px; line-height: 1; color: var(--ink-hi); }
.card__kpi span:last-child { font-size: 13px; color: var(--ink-lo); }
.section--paper .card { background: #fff; box-shadow: 0 0 0 1px var(--paper-line); }
.section--paper .card:has(a:hover), .section--paper .card:focus-within { box-shadow: 0 0 0 1px color-mix(in oklch, var(--brand) 55%, transparent), 0 24px 48px -28px rgb(14 20 28 / 0.35); }
.section--paper .card h3 { color: var(--ink); }
.section--paper .card p { color: var(--ink-2); }
.section--paper .card__meta { color: var(--brand); }
.section--paper .card__kpi { border-color: var(--paper-line); }
.section--paper .card__kpi .num { color: var(--ink); }
.section--paper .card__kpi span:last-child { color: var(--ink-2); }

/* 标签 */
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  display: inline-flex; align-items: center; height: 30px; padding: 0 12px; border-radius: 999px;
  font-size: 13px; color: var(--ink-mid); box-shadow: inset 0 0 0 1px var(--line-strong);
}
a.tag { transition: color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease); }
a.tag:hover { color: var(--ink-hi); box-shadow: inset 0 0 0 1px var(--brand-hi); }
.section--paper .tag { color: var(--ink-2); box-shadow: inset 0 0 0 1px rgb(14 20 28 / 0.16); }
.section--paper a.tag:hover { color: var(--brand); box-shadow: inset 0 0 0 1px var(--brand); }

/* 收尾 CTA（与首页一致） */
.endcta { text-align: center; overflow: hidden; background: radial-gradient(60% 70% at 50% 115%, color-mix(in oklch, var(--brand) 42%, transparent), transparent 72%), var(--bg-0); }
.endcta__phone { display: inline-block; font-size: clamp(32px, 4.2vw, 60px); line-height: 1; color: var(--ink-hi); letter-spacing: 0.02em; }
.endcta__phone:hover { color: var(--brand-hi); }
.endcta .links { justify-content: center; margin-top: var(--s-6); }
.endcta .note { margin-top: var(--s-5); }

/* 版块底部的说明与链接行 */
.foot-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: var(--s-3) var(--s-6); margin-top: var(--s-6); }
.callout {
  display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: var(--s-3) var(--s-5);
  margin-top: var(--s-7); padding: var(--s-5) var(--s-6); border-radius: var(--r-card);
  background: var(--brand-tint); box-shadow: inset 0 0 0 1px color-mix(in oklch, var(--brand-hi) 30%, transparent);
}
.callout__tag { font: 500 12px/1 var(--font-display); letter-spacing: 0.16em; color: var(--brand-hi); }
.callout p { color: var(--ink-hi); }
.section--paper .callout { background: color-mix(in oklch, var(--brand) 7%, white); box-shadow: inset 0 0 0 1px color-mix(in oklch, var(--brand) 22%, transparent); }
.section--paper .callout__tag { color: var(--brand); }
.section--paper .callout p { color: var(--ink); }
@media (max-width: 720px) { .callout { grid-template-columns: 1fr; padding: var(--s-5); } }

/* 型号公式：F + G + Air / Pro */
.formula { display: flex; flex-wrap: wrap; align-items: stretch; gap: var(--s-3); }
.formula__op { align-self: center; font: 300 32px/1 var(--font-display); color: var(--ink-lo); }
.formula__part {
  flex: 1 1 160px; display: grid; align-content: start; gap: 6px; padding: var(--s-5);
  border-radius: var(--r-card); background: var(--bg-2); box-shadow: inset 0 0 0 1px var(--line);
}
.formula__part .num { font-size: clamp(36px, 3.6vw, 52px); line-height: 1; color: var(--brand-hi); }
.formula__part b { font-weight: 500; }
.formula__part span { font-size: 13px; color: var(--ink-lo); }
@media (max-width: 720px) { .formula__op { display: none; } .formula__part { flex-basis: calc(50% - var(--s-3)); } }

/* 分层架构图（开发者、关于） */
.stack { display: grid; gap: 6px; }
.stack__row {
  display: grid; grid-template-columns: 180px minmax(0, 1fr); align-items: center; gap: var(--s-5);
  padding: var(--s-4) var(--s-5); border-radius: 10px; background: var(--bg-2); box-shadow: inset 0 0 0 1px var(--line);
}
.stack__row > b { font: 600 15px/1.3 var(--font-display); }
.stack__row > b small { display: block; margin-top: 4px; font: 500 11px/1 var(--font-display); letter-spacing: 0.14em; color: var(--ink-lo); }
.stack__row--hi { background: var(--brand-tint); box-shadow: inset 0 0 0 1px color-mix(in oklch, var(--brand-hi) 40%, transparent); }
.stack__row--hi > b small { color: var(--brand-hi); }
@media (max-width: 720px) { .stack__row { grid-template-columns: 1fr; gap: var(--s-3); } }