:root {
  --ink: #17324d;
  --ink-deep: #102a43;
  --ink-soft: #244a63;
  --paper: #f7faf8;
  --paper-bright: #ffffff;
  --blue: #9fc9da;
  --blue-deep: #5d96ad;
  --blue-soft: #eaf5f8;
  --gold: #e5c77a;
  --gold-soft: #fff8e8;
  --danger: #ca6b61;
  --mint: var(--blue);
  --mint-deep: var(--blue-deep);
  --coral: var(--gold);
  --line-dark: rgba(23, 50, 77, .14);
  --line-light: rgba(255, 255, 255, .16);
  --display: "Avenir Next", "HarmonyOS Sans SC", "PingFang SC", sans-serif;
  --body: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius-large: 28px;
  --radius-medium: 20px;
  --shadow-soft: 0 28px 70px rgba(10, 34, 55, .18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; color: var(--ink); background: var(--paper); font-family: var(--body); -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }

.skip-link { position: fixed; top: -80px; left: 16px; z-index: 100; padding: 12px 18px; color: var(--ink); border-radius: 999px; background: var(--paper-bright); transition: top .2s; }
.skip-link:focus { top: 16px; }
.site-header { position: absolute; inset: 0 0 auto; z-index: 10; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 28px; height: 82px; padding: 0 clamp(24px, 5vw, 78px); color: #fff; border-bottom: 1px solid rgba(255, 255, 255, .12); }
.brand { display: inline-flex; align-items: center; gap: 12px; width: max-content; text-decoration: none; font-family: var(--display); }
.brand img { width: 50px; height: 50px; flex: 0 0 auto; padding: 2px; object-fit: contain; border: 1px solid rgba(255, 255, 255, .72); border-radius: 15px; background: #fff; box-shadow: 0 9px 24px rgba(3, 19, 32, .2); }
.brand span { display: grid; }
.brand strong { font-size: 18px; line-height: 1; letter-spacing: -.03em; }
.brand small { margin-top: 6px; font-size: 8px; letter-spacing: .14em; opacity: .64; }
.site-header nav { display: flex; gap: clamp(18px, 3vw, 36px); font: 500 13px/1 var(--body); }
.site-header nav a { position: relative; text-decoration: none; }
.site-header nav a::after { position: absolute; right: 100%; bottom: -10px; left: 0; height: 1px; content: ""; background: var(--gold); transition: right .25s ease; }
.site-header nav a:hover::after { right: 0; }
.header-cta { justify-self: end; min-height: 42px; display: inline-flex; align-items: center; padding: 0 18px; border: 1px solid rgba(255, 255, 255, .32); border-radius: 999px; text-decoration: none; font: 700 13px/1 var(--body); transition: background .2s ease, color .2s ease, transform .2s ease; }
.header-cta:hover { color: var(--ink); background: #fff; transform: translateY(-1px); }
.header-cta span { margin-left: 9px; color: var(--gold); }

.hero { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(430px, 1fr); align-items: center; gap: 48px; min-height: 760px; height: min(900px, 100vh); padding: 128px clamp(24px, 7vw, 110px) 78px; overflow: hidden; color: #fff; background: radial-gradient(circle at 83% 18%, rgba(229, 199, 122, .18), transparent 23%), radial-gradient(circle at 73% 68%, rgba(159, 201, 218, .2), transparent 32%), linear-gradient(135deg, #102a43 0%, #17324d 72%, #1d4058 100%); }
.hero::before { position: absolute; inset: 0; content: ""; opacity: .08; background-image: linear-gradient(rgba(255, 255, 255, .08) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .08) 1px, transparent 1px); background-size: 80px 80px; }
.contour { position: absolute; border: 1px solid rgba(159, 201, 218, .2); border-radius: 50%; }
.contour::before, .contour::after { position: absolute; inset: 28px; border: inherit; border-radius: inherit; content: ""; }
.contour::after { inset: 58px; border-color: rgba(229, 199, 122, .18); }
.contour-one { bottom: -250px; left: -260px; width: 620px; height: 620px; }
.contour-two { top: 85px; right: -260px; width: 690px; height: 690px; }
.hero-copy { position: relative; z-index: 2; min-width: 0; max-width: 680px; animation: rise .75s cubic-bezier(.2, .8, .2, 1) both; }
.eyebrow { display: flex; align-items: center; gap: 11px; margin: 0 0 24px; color: var(--blue); font: 700 11px/1 var(--body); letter-spacing: .14em; }
.eyebrow span { width: 27px; height: 2px; background: currentColor; }
.eyebrow.dark { color: var(--blue-deep); }
.hero h1, .section-heading h2, .safety-copy h2, .partnership-application h2 { margin: 0; font-family: var(--display); font-weight: 650; letter-spacing: -.045em; }
.hero h1 { max-width: 720px; font-size: clamp(56px, 5.15vw, 74px); line-height: 1.06; }
.hero h1 span, .section-heading h2 span, .safety-copy h2 span, .partnership-application h2 span { color: var(--blue); font: inherit; }
.hero-lead { max-width: 600px; margin: 30px 0 0; color: rgba(223, 236, 242, .78); font-size: clamp(16px, 1.3vw, 18px); line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 54px; padding: 0 24px; border: 1px solid transparent; border-radius: 999px; color: var(--ink); cursor: pointer; text-decoration: none; font: 700 14px/1 var(--body); transition: transform .2s ease, background .2s ease, color .2s ease, box-shadow .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: #fff; box-shadow: 0 15px 34px rgba(3, 19, 32, .22); }
.button.ghost { border-color: rgba(255, 255, 255, .32); color: #fff; background: rgba(255, 255, 255, .03); }
.button.coral { color: #fff; background: var(--ink); }
.hero-notes { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 26px; color: rgba(223, 236, 242, .72); font-size: 11px; }
.hero-notes span { display: inline-flex; align-items: center; gap: 7px; }
.hero-notes i { color: var(--blue); font-style: normal; font-weight: 800; }

.hero-stage { position: relative; z-index: 2; min-width: 0; min-height: 540px; animation: rise .8s .12s cubic-bezier(.2, .8, .2, 1) both; }
.hero-halo { position: absolute; top: 50%; left: 50%; width: min(38vw, 520px); height: min(38vw, 520px); border-radius: 50%; background: linear-gradient(145deg, rgba(159, 201, 218, .48), rgba(229, 199, 122, .26)); filter: blur(2px); transform: translate(-50%, -48%); }
.hero-endpoints { position: absolute; top: 22px; right: 8px; z-index: 3; display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; max-width: 320px; }
.hero-endpoints span { padding: 7px 10px; color: #516b7b; border: 1px solid rgba(255, 255, 255, .9); border-radius: 999px; background: rgba(255, 255, 255, .8); backdrop-filter: blur(12px); font-size: 8px; letter-spacing: .04em; }
.hero-conversation { position: absolute; top: 86px; left: 0; z-index: 2; width: min(84%, 440px); overflow: hidden; color: var(--ink); border: 1px solid rgba(255, 255, 255, .86); border-radius: var(--radius-large); background: rgba(255, 255, 255, .94); box-shadow: var(--shadow-soft); backdrop-filter: blur(16px); }
.hero-conversation header { min-height: 82px; display: flex; align-items: center; justify-content: space-between; padding: 17px 20px; border-bottom: 1px solid #dce8eb; }
.hero-conversation header > div { display: flex; align-items: center; gap: 12px; }
.hero-conversation header i { width: 42px; height: 42px; border: 9px solid var(--blue-soft); border-radius: 50%; background: var(--blue-deep); box-shadow: 0 0 0 1px #d7e7eb; }
.hero-conversation header span { display: grid; gap: 5px; }
.hero-conversation header strong { font-size: 13px; }
.hero-conversation header small { color: #728895; font-size: 9px; }
.hero-conversation header b { color: #94a8b2; letter-spacing: .14em; }
.hero-dialogue { min-height: 290px; padding: 24px 20px; background: linear-gradient(180deg, #fbfdfc, #f3f9fa); }
.hero-dialogue p { max-width: 82%; margin: 0; padding: 14px 16px; font-size: 12px; line-height: 1.7; }
.dialogue-user { margin-left: auto !important; color: #fff; border-radius: 17px 17px 5px 17px; background: var(--ink); }
.dialogue-agent { margin-top: 18px !important; color: var(--ink-soft); border: 1px solid #d6e9ee; border-radius: 17px 17px 17px 5px; background: var(--blue-soft); }
.dialogue-signal { width: max-content; max-width: 92%; display: grid; gap: 5px; margin-top: 19px; padding: 11px 14px; color: #725f2e; border: 1px solid #efdda8; border-radius: 14px; background: var(--gold-soft); }
.dialogue-signal span { font-size: 9px; font-weight: 800; letter-spacing: .08em; }
.dialogue-signal strong { font-size: 10px; font-weight: 600; }
.hero-conversation footer { min-height: 60px; display: flex; align-items: center; justify-content: space-between; padding: 0 16px 0 20px; color: #8296a0; font-size: 10px; }
.hero-conversation footer i { width: 36px; height: 36px; display: grid; place-items: center; color: #fff; border-radius: 50%; background: var(--ink); font-style: normal; }
.hero-guard { position: absolute; right: 0; bottom: 42px; z-index: 3; width: 244px; display: grid; gap: 4px; padding: 18px 20px; color: #fff; border: 1px solid rgba(255, 255, 255, .16); border-radius: 18px; background: rgba(23, 50, 77, .96); box-shadow: 0 24px 55px rgba(3, 19, 32, .28); }
.hero-guard span { color: var(--blue); font-size: 9px; letter-spacing: .1em; }
.hero-guard strong { font-size: 15px; }
.hero-guard small { color: #bdd0d9; font-size: 9px; line-height: 1.5; }

.section { width: 100%; min-width: 0; padding: clamp(82px, 8vw, 120px) clamp(24px, 7vw, 110px); }
.section-heading { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(280px, .6fr); align-items: end; gap: 48px; margin-bottom: 58px; }
.section-heading h2, .safety-copy h2 { font-size: clamp(42px, 4.6vw, 64px); line-height: 1.08; }
.section-heading h2 span { color: var(--blue-deep); }
.section-heading > p { max-width: 480px; justify-self: end; margin: 0 0 6px; color: rgba(8, 43, 56, .65); font-size: 16px; line-height: 1.8; }
.section-heading.inverted { color: var(--paper); }
.section-heading.inverted > p { color: rgba(244, 239, 227, .66); }

.capabilities { background: #fff; }
.capability-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.capability-card { position: relative; display: flex; flex-direction: column; min-width: 0; min-height: 470px; padding: 34px; overflow: hidden; color: var(--ink); border: 1px solid var(--line-dark); border-radius: 24px; background: #fafcfb; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.capability-card:nth-child(1) { background: var(--blue-soft); }
.capability-card:nth-child(2) { background: var(--gold-soft); }
.capability-card:nth-child(3) { color: #fff; border-color: var(--ink); background: var(--ink); }
.capability-card:hover { z-index: 1; transform: translateY(-4px); border-color: rgba(93, 150, 173, .45); box-shadow: 0 22px 46px rgba(36, 74, 99, .1); }
.capability-card small, .scenario-grid small, .partnership-grid small { color: var(--mint-deep); font: 700 10px/1 var(--display); letter-spacing: .16em; }
.capability-card:nth-child(3) small, .capability-card:nth-child(3) > p, .capability-card:nth-child(3) .capability-detail p { color: #bfd0d9; }
.capability-visual { position: relative; height: 205px; margin: 20px 0 22px; overflow: hidden; border: 1px solid rgba(255, 255, 255, .72); border-radius: 18px; background: rgba(255, 255, 255, .5); }
.capability-visual::after { position: absolute; inset: auto 14% -42% 14%; height: 54%; content: ""; border-radius: 50%; background: currentColor; opacity: .06; filter: blur(28px); }
.capability-visual img { position: relative; z-index: 1; width: 100%; height: 100%; display: block; object-fit: contain; transform: scale(1.03); transition: transform .35s ease; }
.capability-card:hover .capability-visual img { transform: scale(1.075); }
.capability-card:nth-child(3) .capability-visual { border-color: rgba(255, 255, 255, .12); background: rgba(255, 255, 255, .045); }
.capability-card h3 { margin: 0 0 12px; font: 650 31px/1 var(--display); letter-spacing: -.035em; }
.capability-card > p { max-width: 430px; margin: 0; color: #597282; font-size: 14px; line-height: 1.75; }
.capability-toggle { width: max-content; min-height: 44px; margin-top: auto; padding: 14px 0 4px; border: 0; border-bottom: 1px solid currentColor; color: inherit; cursor: pointer; background: transparent; font: 700 12px/1 var(--body); }
.capability-detail { padding-top: 22px; }
.capability-detail[hidden] { display: none; }
.capability-detail h4 { margin: 14px 0 5px; color: var(--mint-deep); font: 700 10px/1 var(--display); letter-spacing: .12em; }
.capability-detail p { margin: 0; color: rgba(9, 43, 56, .7); font-size: 13px; line-height: 1.65; }

.collaboration, .partnerships, .safety { color: var(--paper); background: var(--ink-deep); }
.handoff-panel { position: relative; padding: clamp(24px, 3.2vw, 44px); overflow: hidden; border: 1px solid var(--line-light); border-radius: 28px; background: radial-gradient(circle at 36% 16%, rgba(159, 201, 218, .1), transparent 30%), radial-gradient(circle at 72% 78%, rgba(229, 199, 122, .08), transparent 28%), rgba(255, 255, 255, .025); }
.handoff-panel::before { position: absolute; top: -230px; left: 50%; width: 460px; height: 460px; content: ""; border: 1px solid rgba(159, 201, 218, .08); border-radius: 50%; transform: translateX(-50%); }
.handoff-lanes { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 44px; margin-bottom: 18px; }
.handoff-lanes span { display: flex; align-items: center; gap: 9px; min-width: 0; padding: 0 4px; }
.handoff-lanes i { width: 8px; height: 8px; flex: 0 0 auto; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 5px rgba(159, 201, 218, .1); }
.handoff-lanes span:last-child i { background: var(--gold); box-shadow: 0 0 0 5px rgba(229, 199, 122, .1); }
.handoff-lanes strong { color: #fff; font: 650 13px/1 var(--display); }
.handoff-lanes small { margin-left: auto; color: rgba(223, 236, 242, .48); font-size: 9px; letter-spacing: .1em; }
.handoff-flow { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; padding: 0; margin: 0; list-style: none; }
.handoff-flow li { position: relative; min-width: 0; min-height: 330px; display: flex; flex-direction: column; padding: 24px; overflow: visible; border: 1px solid rgba(159, 201, 218, .16); border-radius: 20px; background: linear-gradient(180deg, rgba(159, 201, 218, .085), rgba(255, 255, 255, .025)); }
.handoff-flow li[data-owner="human"] { border-color: rgba(229, 199, 122, .18); background: linear-gradient(180deg, rgba(229, 199, 122, .08), rgba(255, 255, 255, .025)); }
.handoff-flow li:nth-child(3) { color: var(--ink-deep); border-color: var(--gold); background: var(--gold-soft); box-shadow: 0 20px 45px rgba(3, 19, 32, .2); }
.handoff-flow li:nth-child(2)::after { position: absolute; top: 47%; right: -29px; z-index: 3; width: 40px; height: 40px; display: grid; place-items: center; content: "→"; color: var(--ink-deep); border: 6px solid var(--ink-deep); border-radius: 50%; background: var(--gold); font: 800 16px/1 var(--display); }
.handoff-step-head { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.handoff-step-head b { color: var(--blue); font: 700 11px/1 var(--display); letter-spacing: .1em; }
.handoff-flow li[data-owner="human"] .handoff-step-head b { color: var(--gold); }
.handoff-flow li:nth-child(3) .handoff-step-head b { color: #917322; }
.handoff-step-head small { color: rgba(223, 236, 242, .52); font-size: 9px; letter-spacing: .06em; }
.handoff-flow li:nth-child(3) .handoff-step-head small { color: rgba(16, 42, 67, .54); }
.handoff-flow h3 { margin: 60px 0 13px; font: 650 clamp(22px, 2vw, 29px)/1.08 var(--display); letter-spacing: -.025em; }
.handoff-flow p { margin: 0; color: rgba(223, 236, 242, .64); font-size: 12px; line-height: 1.75; }
.handoff-flow li:nth-child(3) p { color: rgba(16, 42, 67, .68); }
.handoff-output { display: grid; gap: 6px; margin-top: auto; padding-top: 24px; color: #fff; font-size: 11px; font-weight: 650; line-height: 1.5; }
.handoff-output i { color: var(--blue); font: 700 8px/1 var(--body); letter-spacing: .12em; }
.handoff-flow li[data-owner="human"] .handoff-output i { color: var(--gold); }
.handoff-flow li:nth-child(3) .handoff-output { color: var(--ink-deep); }
.handoff-flow li:nth-child(3) .handoff-output i { color: #917322; }
.responsibility-boundary { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; padding: 1px; margin: 30px 0 0; border-radius: 16px; background: var(--line-light); overflow: hidden; }
.responsibility-boundary > div { min-width: 0; padding: 20px 22px; background: rgba(16, 42, 67, .96); }
.responsibility-boundary dt { margin-bottom: 9px; color: var(--blue); font: 700 10px/1 var(--display); letter-spacing: .08em; }
.responsibility-boundary > div:nth-child(2) dt { color: #d7b6b0; }
.responsibility-boundary > div:nth-child(3) dt { color: var(--gold); }
.responsibility-boundary dd { margin: 0; color: rgba(223, 236, 242, .62); font-size: 11px; line-height: 1.65; }

.scenario-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 16px; }
.scenario-grid article, .partnership-grid article { position: relative; display: flex; flex-direction: column; min-width: 0; padding: 30px; overflow: hidden; border-radius: 24px; }
.scenario-grid article { grid-column: span 4; min-height: 390px; border: 1px solid var(--line-dark); background: #f9fbfa; transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.scenario-grid article:nth-child(1) { grid-column: span 7; background: var(--blue-soft); }
.scenario-grid article:nth-child(2) { grid-column: span 5; background: var(--gold-soft); }
.scenario-grid article:hover { transform: translateY(-3px); border-color: rgba(93, 150, 173, .45); box-shadow: 0 20px 45px rgba(36, 74, 99, .08); }
.card-topline { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.card-topline > span { flex: 0 0 auto; padding: 7px 10px; color: var(--ink-soft); border: 1px solid rgba(23, 50, 77, .12); border-radius: 999px; background: rgba(255, 255, 255, .58); font-size: 9px; font-weight: 700; letter-spacing: .06em; }
.scenario-grid h3, .partnership-grid h3 { margin: 42px 0 12px; font: 650 clamp(26px, 2.5vw, 35px)/1.05 var(--display); letter-spacing: -.025em; }
.card-summary { max-width: 610px; margin: 0; color: #587180; font-size: 14px; line-height: 1.75; }
.card-facts { display: grid; margin: 28px 0 0; border-top: 1px solid var(--line-dark); }
.card-facts > div { display: grid; grid-template-columns: 78px minmax(0, 1fr); gap: 16px; padding: 13px 0; border-bottom: 1px solid var(--line-dark); }
.card-facts dt { color: var(--blue-deep); font-size: 10px; font-weight: 800; letter-spacing: .06em; }
.card-facts dd { margin: 0; color: var(--ink-soft); font-size: 12px; line-height: 1.55; }

.partnership-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.partnership-grid article { min-height: 470px; border: 1px solid var(--line-light); background: rgba(255, 255, 255, .035); transition: background .2s ease, border-color .2s ease, transform .2s ease; }
.partnership-grid article::before { position: absolute; top: 0; right: 0; width: 150px; height: 150px; content: ""; border-radius: 0 0 0 100%; background: radial-gradient(circle at 100% 0, rgba(159, 201, 218, .14), transparent 70%); }
.partnership-grid article:hover { transform: translateY(-3px); border-color: rgba(159, 201, 218, .34); background: rgba(255, 255, 255, .055); }
.partnership-grid small { color: var(--blue); }
.partnership-grid .card-topline > span { color: var(--gold); border-color: rgba(229, 199, 122, .2); background: rgba(229, 199, 122, .07); }
.partnership-grid h3 { color: #fff; }
.partnership-grid .card-summary { color: rgba(223, 236, 242, .68); }
.partnership-grid .card-facts { border-color: var(--line-light); }
.partnership-grid .card-facts > div { border-color: var(--line-light); }
.partnership-grid .card-facts dt { color: var(--blue); }
.partnership-grid .card-facts dd { color: rgba(244, 248, 249, .72); }
.partnership-link { width: max-content; display: inline-flex; align-items: center; gap: 12px; margin-top: auto; padding-top: 24px; color: #fff; text-decoration: none; font-size: 12px; font-weight: 750; }
.partnership-link span { width: 30px; height: 30px; display: grid; place-items: center; color: var(--ink-deep); border-radius: 50%; background: var(--gold); transition: transform .2s ease; }
.partnership-link:hover span { transform: translateX(4px); }
.roadmap-note { width: max-content; display: block; margin-top: 24px; padding: 9px 12px; color: var(--blue); border: 1px solid rgba(159, 201, 218, .24); border-radius: 999px; background: rgba(159, 201, 218, .08); font: 700 10px/1 var(--body); letter-spacing: .08em; }

.safety { display: grid; grid-template-columns: minmax(0, .75fr) minmax(0, 1.25fr); gap: 55px 8vw; }
.safety-copy p:last-child { max-width: 500px; color: rgba(244, 239, 227, .66); font-size: 16px; line-height: 1.8; }
.safety-rules { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-self: end; gap: 1px; padding: 1px; margin: 0; list-style: none; background: var(--line-light); }
.safety-rules li { min-height: 180px; padding: 24px; background: var(--ink-deep); }
.safety-rules b { color: var(--gold); font: 700 10px/1 var(--display); }
.safety-rules span { display: block; margin-top: 36px; font: 650 24px/1 var(--display); }
.safety-rules p { margin: 10px 0 0; color: rgba(244, 239, 227, .58); font-size: 12px; line-height: 1.6; }

.partnership-application { display: grid; grid-template-columns: minmax(0, .8fr) minmax(420px, 1.2fr); gap: 8vw; padding: clamp(75px, 9vw, 130px) clamp(24px, 7vw, 110px); color: var(--ink); background: radial-gradient(circle at 8% 25%, rgba(229, 199, 122, .26), transparent 24%), var(--gold-soft); }
.partnership-application h2 { font-size: clamp(42px, 5vw, 75px); line-height: 1; }
.partnership-application > div > p:last-child { max-width: 480px; color: var(--muted, #647b8b); line-height: 1.8; }
.partnership-form, #partnership-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-self: center; gap: 18px; padding: 30px; border: 1px solid #eadcb5; border-radius: var(--radius-large); background: rgba(255, 255, 255, .74); box-shadow: 0 24px 60px rgba(74, 61, 31, .08); }
#partnership-form label { display: grid; gap: 8px; color: #667b88; font: 700 10px/1 var(--body); letter-spacing: .06em; }
#partnership-form input, #partnership-form select, #partnership-form textarea { width: 100%; min-width: 0; min-height: 48px; padding: 12px 14px; border: 1px solid #dce7e9; border-radius: 12px; color: var(--ink); background: rgba(255, 255, 255, .94); }
#partnership-form option { color: var(--ink); }
#partnership-form textarea { min-height: 130px; resize: vertical; }
#partnership-form label:has(textarea), #partnership-form .button, #partnership-message { grid-column: 1 / -1; }
.partnership-form :disabled { cursor: not-allowed; opacity: .58; }
.partnership-form .field-error { display: block; min-height: 1.4em; color: var(--danger); font: 500 11px/1.4 var(--body); letter-spacing: 0; }
.partnership-form [aria-invalid="true"] { border-color: var(--danger); }
.field-error, #partnership-message[data-state="error"] { color: var(--danger); }
#partnership-message[data-state="success"] { color: var(--mint); }
#partnership-message { margin: 0; color: #718691; font-size: 12px; line-height: 1.6; }
.noscript-notice { grid-column: 2; margin: 0; padding: 18px; color: var(--ink); border: 1px solid var(--danger); border-radius: 14px; background: rgba(202, 107, 97, .08); line-height: 1.7; }
.noscript-notice a { color: var(--blue-deep); }

.site-footer { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 25px; min-height: 115px; padding: 20px clamp(24px, 5vw, 78px); color: var(--paper); border-top: 1px solid var(--line-light); background: var(--ink); }
.site-footer p { font-size: 10px; opacity: .45; }
.footer-links { justify-self: end; display: flex; flex-wrap: wrap; justify-content: end; gap: 12px 18px; }
.footer-links a { color: var(--blue); text-decoration: none; font: 600 11px/1 var(--body); }

/* 开发文档页：与首页的能力门户样式分隔，保留文档入口。 */
.docs-page { background: var(--paper-bright); }
.doc-header { display: flex; align-items: center; justify-content: space-between; height: 82px; padding: 0 clamp(22px, 5vw, 76px); color: var(--paper); border-bottom: 1px solid var(--line-light); background: var(--ink-deep); }.doc-header > a:last-child { color: var(--mint); text-decoration: none; font: 650 11px/1 var(--display); letter-spacing: .08em; }
.doc-layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); max-width: 1440px; margin: 0 auto; }
.doc-nav { position: sticky; top: 0; align-self: start; display: flex; flex-direction: column; height: 100vh; padding: 55px 30px; border-right: 1px solid var(--line-dark); background: var(--paper); }.doc-nav > p { margin: 0 0 35px; color: var(--mint-deep); font: 700 9px/1 var(--display); letter-spacing: .2em; }.doc-nav nav { display: grid; }.doc-nav nav a { padding: 13px 0; border-bottom: 1px solid var(--line-dark); text-decoration: none; font: 650 13px/1 var(--display); }.doc-nav nav a:hover { color: var(--coral); }.doc-nav > small { margin-top: auto; color: rgba(9, 43, 56, .42); font: 600 9px/1 var(--display); letter-spacing: .08em; }
.doc-content { min-width: 0; padding: 72px clamp(28px, 7vw, 100px) 120px; }.doc-content > header { padding-bottom: 75px; border-bottom: 1px solid var(--line-dark); }.doc-content h1 { margin: 0; font: 650 clamp(48px, 6vw, 82px)/1 var(--display); letter-spacing: -.04em; }.doc-content > header > p:last-child { max-width: 690px; margin: 25px 0 0; color: rgba(9, 43, 56, .62); font-size: 16px; line-height: 1.8; }
.doc-content > section { position: relative; padding: 75px 0; border-bottom: 1px solid var(--line-dark); scroll-margin-top: 30px; }.doc-index { position: absolute; top: 78px; right: 0; color: rgba(9, 43, 56, .2); font: 700 12px/1 var(--display); }.doc-content h2 { margin: 0 0 26px; font: 650 38px/1 var(--display); }.doc-content h3 { font-family: var(--display); }.doc-content section > p, .doc-content section > ul { max-width: 800px; color: rgba(9, 43, 56, .67); font-size: 14px; line-height: 1.8; }.doc-content pre { max-width: 900px; margin: 25px 0; padding: 24px; overflow: auto; color: #cbe7df; border-left: 4px solid var(--mint); background: var(--ink-deep); font: 12px/1.75 "SFMono-Regular", Consolas, monospace; }
.api-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line-dark); border-left: 1px solid var(--line-dark); }.api-list article { min-height: 180px; padding: 22px; border-right: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }.api-list code { color: var(--mint-deep); font: 600 10px/1.3 "SFMono-Regular", Consolas, monospace; }.api-list h3 { margin: 28px 0 8px; font-size: 20px; }.api-list p { margin: 0; color: rgba(9, 43, 56, .58); font-size: 12px; line-height: 1.7; }.api-list b { color: var(--ink); }
.error-table { max-width: 900px; border-top: 1px solid var(--line-dark); }.error-table div { display: grid; grid-template-columns: minmax(220px, .45fr) 1fr; gap: 25px; padding: 17px 0; border-bottom: 1px solid var(--line-dark); }.error-table code { color: var(--coral); font-size: 11px; }.error-table span { color: rgba(9, 43, 56, .64); font-size: 13px; }
.doc-footer { display: flex; justify-content: space-between; padding: 28px clamp(22px, 5vw, 76px); color: rgba(244, 239, 227, .5); background: var(--ink-deep); font: 600 10px/1 var(--display); letter-spacing: .08em; }.doc-footer a { color: var(--mint); text-decoration: none; }

@keyframes rise { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 1080px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-header nav { display: none; }
  .hero { grid-template-columns: minmax(0, .98fr) minmax(390px, 1.02fr); gap: 34px; padding-inline: 40px; }
  .hero h1 { font-size: clamp(52px, 5.8vw, 62px); }
  .hero-conversation { width: 88%; }
  .scenario-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .scenario-grid article, .scenario-grid article:nth-child(1), .scenario-grid article:nth-child(2) { grid-column: auto; }
  .scenario-grid article:last-child { grid-column: 1 / -1; }
  .safety { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .site-header { height: 76px; grid-template-columns: 1fr; gap: 8px; padding: 0 18px; }.site-header .brand small { display: none; }.site-header .brand strong { font-size: 15px; }.site-header .brand img { width: 44px; height: 44px; border-radius: 13px; }.header-cta { display: none; }
  .hero { grid-template-columns: minmax(0, 1fr); gap: 36px; min-height: 0; height: auto; padding: 130px 20px 74px; }.hero-copy { width: calc(100vw - 40px); max-width: calc(100vw - 40px); }.hero h1 { max-width: 100%; font-size: clamp(42px, 11vw, 48px); overflow-wrap: anywhere; }.hero-actions { flex-direction: column; align-items: stretch; }.hero-actions .button { width: 100%; }.hero-notes { gap: 11px 16px; }
  .hero-stage { width: calc(100vw - 40px); max-width: calc(100vw - 40px); min-height: 475px; }.hero-halo { width: 390px; height: 390px; }.hero-endpoints { top: 0; right: 0; left: 0; justify-content: center; max-width: calc(100vw - 40px); }.hero-conversation { top: 56px; left: 0; width: calc(100vw - 64px); max-width: none; }.hero-dialogue { min-height: 260px; padding: 20px 16px; }.hero-guard { right: 0; bottom: 14px; width: 220px; }
  .section { padding: 82px 20px; }.section-heading { grid-template-columns: 1fr; gap: 25px; margin-bottom: 40px; }.section-heading > p { justify-self: start; }.section-heading h2, .safety-copy h2 { font-size: clamp(42px, 12vw, 58px); }
  .capability-grid, .scenario-grid, .partnership-grid, .partnership-application, .partnership-form { grid-template-columns: 1fr; }
  .safety-rules { grid-template-columns: 1fr; }
  .capability-card { min-height: 440px; padding: 28px; }.capability-visual { height: 190px; margin-top: 18px; }
  .handoff-panel { padding: 20px; }
  .handoff-lanes { grid-template-columns: 1fr; gap: 12px; margin-bottom: 20px; }
  .handoff-lanes small { margin-left: 0; }
  .handoff-flow { grid-template-columns: 1fr; }
  .handoff-flow li { min-height: 270px; padding: 22px; }
  .handoff-flow li:nth-child(2)::after { top: auto; right: calc(50% - 20px); bottom: -29px; content: "↓"; }
  .handoff-flow h3 { margin-top: 46px; }
  .responsibility-boundary { grid-template-columns: 1fr; }
  .scenario-grid article, .scenario-grid article:nth-child(1), .scenario-grid article:nth-child(2), .scenario-grid article:last-child { grid-column: 1; min-height: 0; padding: 26px; }
  .partnership-grid article { min-height: 0; padding: 26px; }
  .scenario-grid h3, .partnership-grid h3 { margin-top: 34px; }
  .card-facts > div { grid-template-columns: 70px minmax(0, 1fr); gap: 12px; }
  .partnership-application { padding-inline: 20px; gap: 42px; }.partnership-form, #partnership-form { grid-template-columns: 1fr; padding: 20px; }
  .site-footer { grid-template-columns: 1fr; align-items: start; padding: 35px 20px; }.footer-links { justify-self: start; justify-content: start; }
  .noscript-notice { grid-column: 1; }
  .doc-header { height: 72px; padding: 0 18px; }.doc-header .brand img { width: 42px; height: 42px; border-radius: 12px; }.doc-header .brand small { display: none; }.doc-layout { grid-template-columns: 1fr; }.doc-nav { position: static; width: 100%; height: auto; padding: 24px 20px; border-right: 0; border-bottom: 1px solid var(--line-dark); }.doc-nav > p, .doc-nav > small { display: none; }.doc-nav nav { display: flex; gap: 16px; overflow-x: auto; }.doc-nav nav a { flex: 0 0 auto; border: 0; }.doc-content { padding: 58px 20px 90px; }.doc-content > header { padding-bottom: 55px; }.doc-content > section { padding: 58px 0; }.doc-index { top: 61px; }.api-list, .error-table div { grid-template-columns: 1fr; }.error-table div { gap: 7px; }.doc-footer { flex-direction: column; gap: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}