/* ============================================================
   万川官网 · 能力页
   系统结构感、低饱和、紧凑信息密度。不展示或仿造产品后台。
   ============================================================ */

/* ── 深色能力首屏 ── */
.capability-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-top: -68px;
  padding: 150px 0 94px;
  color: var(--text-onDark);
  background:
    radial-gradient(circle at 75% 21%, rgba(79, 119, 225, .19), transparent 26%),
    radial-gradient(circle at 13% 86%, rgba(43, 76, 166, .16), transparent 32%),
    linear-gradient(148deg, #07102d 0%, #0a143b 52%, #08102d 100%);
}
.capability-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: auto -12% -58% 34%;
  height: 76%;
  border: 1px solid rgba(156, 181, 255, .10);
  border-radius: 50%;
  transform: rotate(-7deg);
  box-shadow: 0 0 0 72px rgba(102, 137, 231, .025), 0 0 0 146px rgba(102, 137, 231, .018);
}
.capability-hero-grid {
  position: absolute;
  z-index: -1;
  inset: 0;
  opacity: .72;
  background-image:
    linear-gradient(rgba(157, 182, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(157, 182, 255, .04) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(ellipse 78% 72% at 70% 42%, #000 25%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 78% 72% at 70% 42%, #000 25%, transparent 78%);
  animation: capability-grid-drift 26s linear infinite;
}
.capability-hero-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(360px, .78fr) minmax(570px, 1.22fr);
  gap: 70px;
  align-items: center;
}
.capability-hero-copy { position: relative; z-index: 2; }
.capability-hero-copy .eyebrow { margin-bottom: 18px; color: var(--moon-300); font-size: 11px; letter-spacing: .12em; }
.capability-hero-copy h1 {
  max-width: 520px;
  color: #f6f8ff;
  font-size: clamp(38px, 3.7vw, 50px);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: -.035em;
}
.capability-hero-copy h1 span { color: #a9bef9; }
.capability-hero-copy > p:not(.eyebrow) {
  max-width: 520px;
  margin-top: 24px;
  color: #aab7de;
  font-size: 15.5px;
  line-height: 1.82;
}
.capability-hero-actions { display: flex; align-items: center; gap: 22px; margin-top: 31px; }
.capability-hero-actions .btn-primary {
  background: linear-gradient(135deg, var(--moon-300), var(--moon-400));
  color: var(--ink-950);
  box-shadow: 0 12px 30px -15px rgba(242, 180, 95, .68);
}
.capability-hero-actions .btn-primary:hover { background: linear-gradient(135deg, var(--moon-200), var(--moon-300)); }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: #c9d5f7; font-size: 13px; font-weight: 600; }
.text-link::after { content: "→"; color: var(--moon-300); transition: transform .18s ease; }
.text-link:hover::after { transform: translateX(4px); }

/* 首屏右侧不是产品截图，而是一张可读的处理拓扑。 */
.chain-board {
  position: relative;
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(151, 176, 245, .16);
  border-radius: 20px;
  color: #eaf0ff;
  background: linear-gradient(155deg, rgba(20, 36, 89, .74), rgba(5, 13, 42, .88));
  box-shadow: 0 30px 70px -40px rgba(0, 0, 0, .9), inset 0 1px 0 rgba(255, 255, 255, .035);
  backdrop-filter: blur(10px);
}
.chain-board::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .28;
  background-image: radial-gradient(circle, rgba(181, 199, 255, .34) 1px, transparent 1px);
  background-size: 18px 18px;
}
.chain-board-head {
  position: relative;
  z-index: 2;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border-bottom: 1px solid rgba(157, 182, 255, .10);
  color: #c7d2f3;
  font-size: 10px;
}
.chain-board-head b { color: #6f80b4; font-family: var(--font-mono); font-size: 8px; font-weight: 500; }
.chain-stages { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); min-height: 260px; padding: 31px 14px 25px; }
.chain-stages li { position: relative; min-width: 0; padding: 0 14px; border-right: 1px solid rgba(157, 182, 255, .09); }
.chain-stages li:last-child { border-right: 0; }
.chain-index { color: #6073aa; font-family: var(--font-mono); font-size: 8px; letter-spacing: .08em; }
.chain-stages h2 { margin-top: 19px; color: #f1f4ff; font-size: 12px; font-weight: 600; }
.chain-stages p { margin-top: 7px; color: #7e8ebd; font-size: 8px; line-height: 1.55; }
.chain-icon {
  position: relative;
  width: 52px;
  height: 52px;
  display: grid;
  place-content: center;
  gap: 4px;
  margin-top: 17px;
  border: 1px solid rgba(157, 182, 255, .15);
  border-radius: 14px;
  background: rgba(255, 255, 255, .025);
}
.chain-icon::after { content: ""; position: absolute; right: -23px; top: 25px; width: 22px; height: 1px; background: linear-gradient(90deg, rgba(111, 151, 240, .58), transparent); }
.chain-stages li:last-child .chain-icon::after { display: none; }
.chain-icon i { display: block; }
.chain-icon--source i { width: 25px; height: 1px; border-radius: 2px; background: #7895e4; }
.chain-icon--source i:nth-child(2) { width: 18px; }
.chain-icon--complete i { width: 25px; height: 25px; border: 1px solid #7895e4; border-radius: 50%; }
.chain-icon--complete i::after { content: ""; display: block; width: 10px; height: 5px; margin: 7px 0 0 6px; border-left: 1px solid #7895e4; border-bottom: 1px solid #7895e4; transform: rotate(-45deg); }
.chain-icon--rules { grid-template-columns: repeat(2, 8px); grid-template-rows: repeat(2, 8px); gap: 4px; }
.chain-icon--rules i { border: 1px solid #7895e4; border-radius: 2px; }
.chain-icon--rules i:nth-child(2), .chain-icon--rules i:nth-child(3) { background: rgba(120, 149, 228, .46); }
.chain-icon--result i { width: 25px; height: 25px; border: 1px solid var(--moon-300); border-radius: 7px; }
.chain-icon--result i::after { content: ""; display: block; width: 10px; height: 5px; margin: 7px 0 0 6px; border-left: 1px solid var(--moon-300); border-bottom: 1px solid var(--moon-300); transform: rotate(-45deg); }
.chain-line { position: absolute; z-index: 1; left: 8%; right: 8%; top: 124px; height: 1px; background: rgba(111, 151, 240, .10); }
.chain-line i { position: absolute; top: -2px; width: 5px; height: 5px; border-radius: 50%; background: var(--moon-300); box-shadow: 0 0 12px rgba(252, 217, 160, .68); animation: capability-beam 5.6s ease-in-out infinite; }

/* ── 四项核心能力：由长篇交替布局收成两列系统网格 ── */
.capability-intro { overflow: hidden; background: var(--bg-subtle); }
.capability-intro .section-head { max-width: 650px; margin: 0 0 42px; text-align: left; }
.capability-intro .section-head--center { margin-left: 0; margin-right: 0; }
.capability-intro .section-title { max-width: 620px; font-size: clamp(28px, 3vw, 36px); font-weight: 600; letter-spacing: -.025em; }
.capability-intro .section-lede { max-width: 620px; font-size: 14.5px; }
.chapter-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.capability-chapter {
  position: relative;
  min-width: 0;
  min-height: 640px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 32px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: var(--bg-card);
  box-shadow: 0 24px 60px -52px rgba(12, 27, 79, .42);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.capability-chapter:hover { transform: translateY(-3px); border-color: rgba(76, 116, 221, .26); box-shadow: 0 30px 70px -50px rgba(12, 27, 79, .34); }
.capability-chapter--reverse .chapter-copy,
.capability-chapter--reverse .chapter-visual { order: initial; }
.chapter-copy { position: relative; padding-left: 0; }
.chapter-index { position: static; display: inline-flex; color: var(--moon-500); font-family: var(--font-mono); font-size: 11px; font-weight: 600; letter-spacing: .06em; }
.chapter-kicker { display: inline-flex; margin-left: 12px; color: var(--accent); font-size: 10.5px; font-weight: 700; letter-spacing: .09em; }
.chapter-copy h3 { max-width: 420px; margin-top: 16px; font-size: clamp(21px, 2vw, 25px); font-weight: 600; letter-spacing: -.02em; }
.chapter-copy > p:not(.chapter-kicker) { margin-top: 13px; color: var(--text-soft); font-size: 13.5px; line-height: 1.76; }
.chapter-points { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 18px; }
.chapter-points li { position: relative; padding: 4px 0 4px 13px; color: var(--text-muted); font-size: 12.5px; line-height: 1.6; }
.chapter-points li::before { content: ""; position: absolute; left: 0; top: 10px; width: 4px; height: 4px; border-radius: 50%; background: var(--moon-400); }
.chapter-visual {
  position: relative;
  width: 100%;
  min-height: 270px;
  margin-top: auto;
  overflow: hidden;
  border: 1px solid var(--border-soft);
  border-radius: 17px;
  background: var(--bg-subtle);
}
.chapter-visual::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(circle at 74% 20%, rgba(59, 111, 224, .09), transparent 40%); }

/* 01 来源合并 */
.source-merge { display: grid; grid-template-columns: 112px 64px minmax(0, 1fr); align-items: center; gap: 10px; padding: 29px; }
.source-stack { display: grid; gap: 11px; }
.source-stack span { display: flex; align-items: center; min-height: 42px; padding: 0 12px; border: 1px solid var(--border); border-radius: 10px; color: var(--text); background: var(--bg-card); font-size: 10px; font-weight: 600; }
.source-stack span::before { content: ""; width: 5px; height: 5px; margin-right: 7px; border-radius: 50%; background: #56cba1; }
.merge-lines { position: relative; height: 138px; }
.merge-lines::after { content: ""; position: absolute; right: 0; top: 50%; width: 32px; height: 1px; background: rgba(77, 119, 238, .36); }
.merge-lines i { position: absolute; left: 0; right: 30px; height: 1px; background: rgba(77, 119, 238, .24); transform-origin: right; }
.merge-lines i:nth-child(1) { top: 22px; transform: rotate(24deg); }
.merge-lines i:nth-child(2) { top: 69px; }
.merge-lines i:nth-child(3) { bottom: 22px; transform: rotate(-24deg); }
.canonical-card { position: relative; z-index: 2; padding: 15px; border: 1px solid rgba(59, 111, 224, .18); border-radius: 13px; background: var(--bg-card); }
.canonical-card::before { content: "MYRIAD / CORE"; display: block; margin-bottom: 7px; color: var(--accent); font-family: var(--font-mono); font-size: 7px; letter-spacing: .10em; }
.canonical-card > div { display: flex; justify-content: space-between; gap: 9px; padding: 10px 0; border-top: 1px solid var(--border-soft); font-size: 9px; }
.canonical-card span { color: var(--text-muted); }
.canonical-card b { color: var(--text); font-weight: 600; }

/* 02 类目求解 */
.category-solve { display: grid; grid-template-columns: minmax(0, .76fr) 32px minmax(0, 1.24fr); align-items: center; gap: 9px; padding: 34px; color: #eaf0ff; border-color: rgba(157, 182, 255, .12); background: radial-gradient(circle at 70% 32%, rgba(71, 112, 226, .20), transparent 39%), linear-gradient(145deg, #101c4d, #07102f); }
.solve-source, .solve-result { position: relative; z-index: 2; padding: 15px; border: 1px solid rgba(157, 182, 255, .13); border-radius: 12px; background: rgba(8, 17, 52, .62); }
.solve-source span, .solve-result > span { color: #7183b9; font-size: 8px; }
.solve-source b, .solve-result > b { display: block; margin-top: 10px; color: #fff; font-size: 12px; font-weight: 600; }
.solve-source small { display: block; margin-top: 7px; color: #91a0ca; font-size: 8px; }
.solve-arrow { color: var(--moon-300); text-align: center; font-size: 12px; }
.solve-result > div { display: grid; grid-template-columns: 5px 1fr; align-items: center; gap: 6px; margin-top: 13px; padding-top: 11px; border-top: 1px solid rgba(157, 182, 255, .10); }
.solve-result i { width: 5px; height: 5px; border-radius: 50%; background: #56cba1; }
.solve-result i.pending { background: var(--moon-300); }
.solve-result em { color: #a7b4da; font-size: 8px; font-style: normal; }

/* 03 平台字段转换 */
.platform-transform { display: grid; grid-template-columns: 122px minmax(0, 1fr); gap: 32px; align-items: center; padding: 29px; }
.platform-transform::after { content: ""; position: absolute; left: 151px; top: 50%; width: 31px; height: 1px; background: rgba(77, 119, 238, .32); }
.transform-origin { position: relative; z-index: 2; padding: 18px 15px; border: 1px solid rgba(59, 111, 224, .17); border-radius: 13px; background: linear-gradient(145deg, rgba(59, 111, 224, .10), rgba(252, 217, 160, .06)); }
.transform-origin span { color: var(--text-muted); font-size: 8px; }
.transform-origin b { display: block; margin-top: 13px; font-size: 11px; }
.transform-origin strong { display: inline-flex; margin-top: 7px; padding: 3px 7px; border-radius: 999px; color: #8d5d18; background: rgba(252, 217, 160, .30); font-size: 9px; }
.transform-targets { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.transform-targets > div { min-height: 74px; padding: 11px; border: 1px solid var(--border); border-radius: 11px; background: var(--bg-card); }
.transform-targets span { color: var(--accent); font-size: 8px; font-weight: 700; }
.transform-targets b { display: block; margin-top: 6px; font-size: 9.5px; }
.transform-targets em { display: block; margin-top: 4px; color: var(--text-muted); font-size: 8px; font-style: normal; }

/* 04 发布检查 */
.publish-check { display: grid; grid-template-columns: minmax(0, 1fr) 145px; gap: 14px; align-items: center; padding: 30px; }
.check-list { position: relative; z-index: 2; border: 1px solid var(--border); border-radius: 13px; background: var(--bg-card); }
.check-list > div { display: grid; grid-template-columns: 6px 1fr auto; align-items: center; gap: 8px; min-height: 42px; padding: 0 12px; border-bottom: 1px solid var(--border-soft); font-size: 9px; }
.check-list > div:last-child { border-bottom: 0; }
.check-list i { width: 6px; height: 6px; border-radius: 50%; background: #56cba1; }
.check-list i.review { background: var(--moon-400); }
.check-list span { color: var(--text); }
.check-list b { color: #299775; font-size: 7.5px; }
.check-list i.review + span + b { color: var(--moon-500); }
.publish-result { position: relative; z-index: 2; padding: 20px 15px; border: 1px solid rgba(242, 180, 95, .25); border-radius: 13px; background: linear-gradient(150deg, rgba(252, 217, 160, .22), var(--bg-card)); }
.publish-result span { color: var(--text-muted); font-size: 8px; }
.publish-result b { display: block; margin-top: 8px; color: var(--text); font-size: 11px; line-height: 1.55; }

/* ── 人工与自动化 ── */
.automation { position: relative; overflow: hidden; padding: 88px 0; background: linear-gradient(145deg, #101c4d, #07102f 76%); }
.automation::after { content: ""; position: absolute; right: -180px; top: -310px; width: 620px; height: 620px; border-radius: 50%; background: radial-gradient(circle, rgba(252, 217, 160, .10), transparent 68%); }
.automation-layout { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, .75fr) minmax(0, 1.25fr); gap: 70px; align-items: center; }
.automation-copy .section-title { max-width: 420px; font-size: clamp(27px, 3vw, 36px); font-weight: 600; }
.automation-copy .section-lede { max-width: 440px; font-size: 14px; }
.automation-modes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid rgba(157, 182, 255, .13); border-radius: 17px; overflow: hidden; background: rgba(255, 255, 255, .018); }
.automation-modes article { position: relative; min-height: 214px; padding: 25px 21px; border-right: 1px solid rgba(157, 182, 255, .10); }
.automation-modes article:last-child { border-right: 0; }
.automation-modes article > span { color: #7b8dc2; font-family: var(--font-mono); font-size: 11px; font-weight: 600; }
.automation-modes h3 { margin-top: 35px; color: #fff; font-size: 16px; font-weight: 600; }
.automation-modes p { margin-top: 10px; color: #96a5d0; font-size: 12.5px; line-height: 1.7; }
.automation-mode--active { background: linear-gradient(160deg, rgba(73, 112, 221, .18), rgba(252, 217, 160, .035)); }
.automation-mode--active::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: var(--moon-300); }
.automation-modes em { position: absolute; right: 13px; top: 13px; padding: 3px 6px; border-radius: 999px; color: var(--moon-300); background: rgba(252, 217, 160, .07); font-size: 7px; font-style: normal; }

/* ── 配套能力 ── */
.supporting { padding: 88px 0; }
.supporting .section-head { margin-bottom: 38px; }
.supporting .section-title,
.platform-coverage .section-title,
.surfaces .section-title { font-size: clamp(27px, 3vw, 36px); font-weight: 600; letter-spacing: -.025em; }
.supporting-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.supporting-grid article {
  position: relative;
  min-height: 174px;
  padding: 25px 25px 24px 76px;
  border: 1px solid var(--border);
  border-radius: 15px;
  background: var(--bg-card);
  transition: transform .2s ease, border-color .2s ease;
}
.supporting-grid article:hover { transform: translateY(-2px); border-color: rgba(59, 111, 224, .25); }
.supporting-icon { position: absolute; left: 24px; top: 25px; color: var(--moon-500); font-family: var(--font-mono); font-size: 11px; font-weight: 600; letter-spacing: .06em; }
.supporting-icon::after { content: ""; display: block; width: 24px; height: 1px; margin-top: 8px; background: rgba(59, 111, 224, .26); }
.supporting-grid h3 { font-size: 16px; font-weight: 600; }
.supporting-grid p { max-width: 410px; margin-top: 10px; color: var(--text-soft); font-size: 13.5px; line-height: 1.72; }
.supporting-grid a { min-height: 44px; display: inline-flex; align-items: center; margin-top: 13px; color: var(--accent); font-size: 12px; font-weight: 600; }
.supporting-grid a::after { content: "→"; margin-left: 6px; }

/* ── 平台范围 ── */
.platform-coverage { padding: 88px 0; }
.platform-layout { display: grid; grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr); gap: 72px; align-items: start; }
.platform-layout .section-head { margin-bottom: 0; }
.platform-groups { display: grid; gap: 10px; }
.platform-groups article { padding: 19px 20px; border: 1px solid var(--border); border-radius: 13px; background: var(--bg-card); }
.platform-groups article > span { display: block; color: var(--text-muted); font-size: 10.5px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; }
.platform-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 11px; }
.platform-chips b { padding: 6px 9px; border: 1px solid var(--border); border-radius: 999px; color: var(--text-soft); background: var(--bg-subtle); font-size: 10.5px; font-weight: 600; white-space: nowrap; }
.platform-chips--live b { color: #247e63; border-color: rgba(5, 150, 105, .17); background: rgba(5, 150, 105, .055); }

/* ── 三个使用入口 ── */
.surfaces { padding: 88px 0; }
.surfaces .section-head { margin-bottom: 38px; }
.surface-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; overflow: hidden; border: 1px solid var(--border); border-radius: 17px; background: var(--border); }
.surface-grid article { min-height: 210px; padding: 27px; background: var(--bg-card); }
.surface-number { color: var(--moon-500); font-family: var(--font-mono); font-size: 11px; font-weight: 600; letter-spacing: .04em; }
.surface-grid h3 { margin-top: 35px; font-size: 17px; font-weight: 600; }
.surface-grid p { margin-top: 11px; color: var(--text-soft); font-size: 13.5px; line-height: 1.72; }
.surface-grid a { min-height: 44px; display: inline-flex; align-items: center; margin-top: 14px; color: var(--accent); font-size: 12px; font-weight: 600; }
.surface-grid a::after { content: "→"; margin-left: 6px; }

@keyframes capability-beam { 0% { left: 0; opacity: 0; } 8%, 90% { opacity: 1; } 100% { left: 100%; opacity: 0; } }
@keyframes capability-grid-drift { to { background-position: 58px 58px; } }

:root[data-theme="dark"] .capability-chapter { box-shadow: none; }
:root[data-theme="dark"] .source-stack span,
:root[data-theme="dark"] .canonical-card,
:root[data-theme="dark"] .transform-targets > div,
:root[data-theme="dark"] .check-list,
:root[data-theme="dark"] .platform-groups article { background: var(--bg-card); }
:root[data-theme="dark"] .transform-origin,
:root[data-theme="dark"] .publish-result { background: linear-gradient(150deg, rgba(104, 77, 29, .16), var(--bg-card)); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .capability-chapter { box-shadow: none; }
  :root:not([data-theme]) .source-stack span,
  :root:not([data-theme]) .canonical-card,
  :root:not([data-theme]) .transform-targets > div,
  :root:not([data-theme]) .check-list,
  :root:not([data-theme]) .platform-groups article { background: var(--bg-card); }
  :root:not([data-theme]) .transform-origin,
  :root:not([data-theme]) .publish-result { background: linear-gradient(150deg, rgba(104, 77, 29, .16), var(--bg-card)); }
}

@media (max-width: 1080px) {
  .capability-hero-layout { grid-template-columns: minmax(0, 1fr); gap: 44px; }
  .capability-hero-copy { max-width: 680px; }
  .chain-board { max-width: 780px; }
  .chapter-list { grid-template-columns: minmax(0, 1fr); }
  .capability-chapter { min-height: auto; }
  .chapter-visual { min-height: 300px; }
  .automation-layout { grid-template-columns: minmax(0, 1fr); gap: 40px; }
}

@media (max-width: 780px) {
  .capability-hero { padding-top: 126px; padding-bottom: 76px; }
  .chain-stages { grid-template-columns: repeat(2, minmax(0, 1fr)); padding-bottom: 13px; }
  .chain-stages li { min-height: 158px; border-bottom: 1px solid rgba(157, 182, 255, .09); }
  .chain-stages li:nth-child(2) { border-right: 0; }
  .chain-stages li:nth-child(n+3) { border-bottom: 0; }
  .chain-line { display: none; }
  .platform-layout { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .platform-layout .section-head { margin-bottom: 0; }
  .automation-modes { grid-template-columns: minmax(0, 1fr); }
  .automation-modes article { min-height: 150px; border-right: 0; border-bottom: 1px solid rgba(157, 182, 255, .10); }
  .automation-modes article:last-child { border-bottom: 0; }
  .automation-modes h3 { margin-top: 24px; }
  .supporting-grid { grid-template-columns: minmax(0, 1fr); }
  .surface-grid { grid-template-columns: minmax(0, 1fr); }
  .surface-grid article { min-height: 180px; }
}

@media (max-width: 580px) {
  .capability-hero-layout { gap: 38px; }
  .capability-hero-copy h1 { font-size: 34px; line-height: 1.18; }
  .capability-hero-copy > p:not(.eyebrow) { font-size: 14.5px; }
  .capability-hero-actions { flex-direction: column; align-items: stretch; gap: 14px; }
  .capability-hero-actions .btn { width: 100%; }
  .capability-hero-actions .text-link { justify-content: center; }
  .chain-board-head b { display: none; }
  .chain-stages li { padding: 0 12px; }
  .capability-intro, .supporting, .platform-coverage, .surfaces { padding: 72px 0; }
  .capability-intro .section-head { margin-bottom: 30px; }
  .capability-chapter { gap: 22px; padding: 22px; border-radius: 18px; }
  .chapter-copy h3 { font-size: 21px; }
  .chapter-points { display: grid; gap: 2px; }
  .chapter-visual { min-height: 258px; }
  .source-merge { grid-template-columns: 78px 32px minmax(0, 1fr); gap: 5px; padding: 20px 14px; }
  .source-stack span { min-height: 39px; padding: 0 8px; }
  .merge-lines::after { width: 17px; }
  .merge-lines i { right: 15px; }
  .canonical-card { padding: 10px; }
  .canonical-card > div { display: grid; gap: 3px; }
  .category-solve { grid-template-columns: minmax(0, 1fr); gap: 8px; padding: 22px 17px; }
  .solve-arrow { transform: rotate(90deg); }
  .platform-transform { grid-template-columns: minmax(0, 1fr); gap: 15px; padding: 22px 17px; }
  .platform-transform::after { display: none; }
  .publish-check { grid-template-columns: minmax(0, 1fr); padding: 22px 17px; }
  .automation { padding: 72px 0; }
  .supporting-grid article { min-height: 164px; padding-left: 66px; }
  .supporting-icon { left: 20px; }
}

@media (max-width: 480px) {
  /* 2×2 卡格在 320px 下每格只剩约 120px，英文步骤只能用 8px 字挤着读。
     窄屏改成四行流程：序号、图标、标题与说明在同一行建立关系。 */
  .chain-stages { grid-template-columns: minmax(0, 1fr); padding: 8px 14px 13px; }
  .chain-stages li {
    min-height: 88px;
    display: grid;
    grid-template-columns: 28px 44px minmax(0, 1fr);
    grid-template-rows: auto auto;
    column-gap: 12px;
    align-items: center;
    padding: 14px 6px;
    border-right: 0;
    border-bottom: 1px solid rgba(157, 182, 255, .09);
  }
  .chain-stages li:nth-child(n) { border-right: 0; border-bottom: 1px solid rgba(157, 182, 255, .09); }
  .chain-stages li:last-child { border-bottom: 0; }
  .chain-index { grid-column: 1; grid-row: 1 / span 2; }
  .chain-icon { grid-column: 2; grid-row: 1 / span 2; width: 44px; height: 44px; margin-top: 0; border-radius: 12px; }
  .chain-icon::after { display: none; }
  .chain-stages h2 { grid-column: 3; grid-row: 1; margin-top: 0; font-size: 13px; }
  .chain-stages p { grid-column: 3; grid-row: 2; margin-top: 3px; font-size: 9.5px; }
}

@media (prefers-reduced-motion: reduce) {
  .chain-line i { animation: none; left: 50%; }
  .capability-hero-grid { animation: none; }
}