/* 官網首頁 */
.on-ink { background: var(--ink); color: var(--ink-text); }
.on-ink a:not(.btn) { color: var(--ink-text); }
code { font-family: var(--mono); font-size: .9em; padding: 1px 6px; border-radius: 6px; background: #eaf1ed; color: var(--text); white-space: nowrap; }
.on-ink code { background: rgba(255, 255, 255, .08); color: #d8f5e3; }

/* 導覽 */
.site-nav { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid var(--ink-line); background: rgba(7, 18, 13, .96); backdrop-filter: saturate(140%) blur(8px); }
.site-nav .wrap { max-width: 1380px; }
.nav-row { display: flex; align-items: center; gap: 22px; min-height: 68px; }
.nav-row .brand { flex: none; }
.nav-row .brand { margin-right: auto; }
.nav-links { display: flex; align-items: center; gap: 18px; font-size: 14.5px; font-weight: 600; }
.nav-links a { color: var(--ink-muted) !important; text-decoration: none; white-space: nowrap; }
.nav-links a:hover { color: #fff !important; }
.nav-model { font-size: 12px; padding: 1px 6px; border-radius: 5px; background: rgba(6, 199, 85, .14); color: var(--green); margin-left: 2px; }
.nav-admin { padding-left: 18px; border-left: 1px solid var(--ink-line); }
.nav-cta { display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; background: transparent; color: var(--ink-text); border-color: var(--ink-line); }
.nav-login-m { display: none !important; }

/* Hero */
.hero { padding: clamp(40px, 6vw, 72px) 0 clamp(36px, 5vw, 56px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(28px, 4vw, 56px); align-items: center; }
.hero h1 { font-size: clamp(32px, 4.2vw, 54px); font-weight: 800; line-height: 1.2; color: #fff; letter-spacing: 0; }
.hero-sub { margin-top: 20px; font-size: clamp(16px, 1.5vw, 18.5px); color: var(--ink-muted); max-width: 32em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-note { margin-top: 16px; font-size: 14px; color: var(--ink-muted); }

.appliance { margin: 0; padding: 10px; border-radius: 18px; background: linear-gradient(#13291e, #0e1f17); border: 1px solid rgba(220, 255, 232, .14); box-shadow: 0 30px 80px rgba(0, 0, 0, .45), inset 0 1px 0 rgba(255, 255, 255, .06); min-width: 0; }
.appliance-tabs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 4px; padding: 0 0 10px; }
.appliance-tabs button { min-height: 40px; padding: 6px 8px; border: 0; border-radius: 9px; background: transparent; color: var(--ink-muted); font-size: 14px; font-weight: 700; cursor: pointer; white-space: nowrap; }
.appliance-tabs button:hover { color: #fff; }
.appliance-tabs button[aria-selected="true"] { background: rgba(6, 199, 85, .14); color: #fff; box-shadow: inset 0 -2px 0 var(--green); }
.appliance-screen { position: relative; aspect-ratio: 1540 / 860; border-radius: 10px; overflow: hidden; background: #e9eeeb; }
.appliance-screen img { width: 100%; height: 100%; object-fit: cover; object-position: top center; transition: opacity .25s ease; }
.appliance-screen.is-phone { background: radial-gradient(circle at 50% 120%, #1d3a2b, #0b1912 70%); }
.appliance-screen.is-phone img { object-fit: contain; padding: 14px 0; filter: drop-shadow(0 12px 28px rgba(0, 0, 0, .45)); }
.appliance-screen.is-fading img { opacity: .2; }
.appliance-rail { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; padding: 12px 6px 4px; font-size: 13.5px; color: var(--ink-muted); }
.rail-led { width: 9px; height: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 rgba(6, 199, 85, .6); animation: led 2.4s ease-out infinite; flex: none; }
@keyframes led { 0% { box-shadow: 0 0 0 0 rgba(6, 199, 85, .55); } 70%, 100% { box-shadow: 0 0 0 9px rgba(6, 199, 85, 0); } }
.rail-text { flex: 1 1 240px; min-width: 0; }
.rail-ports { display: flex; flex-wrap: wrap; gap: 6px; }
.port { font-family: var(--mono); font-size: 12px; padding: 2px 8px; border-radius: 6px; border: 1px solid var(--ink-line); color: #cfe9da; white-space: nowrap; }

.spec-plate { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: clamp(36px, 5vw, 56px) 0 0; border-top: 1px solid var(--ink-line); }
.spec-plate > div { padding: 22px 20px 4px 0; min-width: 0; }
.spec-plate > div + div { padding-left: 20px; border-left: 1px solid var(--ink-line); }
.spec-plate dt { font-size: clamp(22px, 2.4vw, 30px); font-weight: 600; color: #fff; white-space: nowrap; }
.spec-plate dd { margin: 6px 0 0; color: var(--ink-muted); font-size: 14.5px; }

.hero-lead { margin-top: 20px; font-size: clamp(18px, 1.8vw, 22px); font-weight: 700; color: var(--green); }
.hero-lead + .hero-sub { margin-top: 10px; }

/* 區塊 */
.section { padding: clamp(64px, 8vw, 104px) 0; }
.section-white { background: var(--card); }
.section-head { max-width: 760px; margin-bottom: clamp(32px, 4vw, 48px); }
.section-head h2 { font-size: clamp(27px, 3.2vw, 40px); font-weight: 800; }
.section-head p { margin-top: 14px; font-size: 17px; color: var(--muted); }

/* AI Agent 智慧總機 */
.hub-flow { list-style: none; margin: 0 0 28px; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px; position: relative; }
.hub-flow li { position: relative; display: flex; flex-direction: column; gap: 4px; padding: 18px 20px; border-radius: var(--radius-l); border: 1px solid var(--line); background: var(--paper); min-width: 0; }
.hub-flow li + li::before { content: ""; position: absolute; left: -30px; top: 50%; width: 24px; height: 2px; background: var(--green-700); }
.hub-flow li + li::after { content: ""; position: absolute; left: -12px; top: calc(50% - 5px); border: 6px solid transparent; border-left-color: var(--green-700); }
.hub-flow .is-core { background: var(--ink); color: var(--ink-text); border-color: var(--ink); }
.hub-step-k { font-size: 13px; font-weight: 700; color: var(--faint); }
.hub-flow .is-core .hub-step-k { color: var(--ink-muted); }
.hub-flow b { font-size: 18px; }
.hub-flow .is-core b { color: var(--green); font-weight: 600; }
.hub-flow li > span:last-child { font-size: 14px; color: var(--muted); }
.hub-flow .is-core > span:last-child { color: var(--ink-muted); }
.hub-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 20px; align-items: start; }
.hub-picker { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.hub-card { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; padding: 16px; border-radius: var(--radius); border: 1.5px solid var(--line); background: var(--card); text-align: left; cursor: pointer; min-width: 0; color: var(--text); }
.hub-card:hover { border-color: var(--line-strong); }
.hub-card[aria-selected="true"] { border-color: var(--green-600); background: var(--green-050); box-shadow: inset 0 0 0 1px var(--green-600); }
.hub-card .icon { width: 36px; height: 36px; padding: 7px; border-radius: 10px; background: var(--ink); color: var(--green); }
.hub-card b { font-size: 15.5px; line-height: 1.35; }
.hub-card span { font-size: 13.5px; color: var(--muted); }
.hub-card .badge { margin-top: 2px; }
.hub-demo { border-radius: var(--radius-l); background: var(--ink); color: var(--ink-text); padding: 22px; min-width: 0; min-height: 100%; }
.hub-demo-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 12px; padding-bottom: 14px; border-bottom: 1px solid var(--ink-line); }
.hub-demo-head h3 { font-size: 18px; color: #fff; }
.hub-demo-head p { font-size: 13.5px; color: var(--ink-muted); }
.chat { display: grid; gap: 12px; padding: 16px 0 4px; }
.bubble { max-width: 86%; padding: 10px 14px; border-radius: 16px; font-size: 15px; line-height: 1.55; }
.bubble small { display: block; font-size: 12px; font-weight: 700; margin-bottom: 2px; opacity: .75; }
.bubble.in { justify-self: start; background: #fff; color: var(--text); border-top-left-radius: 4px; }
.bubble.out { justify-self: end; background: var(--green); color: #04140b; border-top-right-radius: 4px; }
.tl { list-style: none; margin: 4px 0 0; padding: 0; display: grid; gap: 0; }
.tl li { position: relative; padding: 8px 0 8px 26px; font-size: 14.5px; color: #dbeee3; }
.tl li::before { content: ""; position: absolute; left: 5px; top: 15px; width: 9px; height: 9px; border-radius: 50%; background: var(--green); }
.tl li + li::after { content: ""; position: absolute; left: 9px; top: -6px; height: 20px; width: 1px; background: var(--ink-3); }
.tl b { display: block; font-size: 12.5px; color: var(--ink-muted); font-weight: 700; }
.tl li.is-handoff::before { background: #f5b74a; }
.tl li.is-handoff b { color: #f5c46a; }
.hub-result { margin-top: 10px; padding: 12px 14px; border-radius: var(--radius); border: 1px dashed rgba(6, 199, 85, .45); font-size: 14.5px; color: #e9f8ef; }
.hub-result b { color: var(--green); }
.hub-note { margin-top: 10px; font-size: 12.5px; color: var(--ink-muted); }
.hub-anim .bubble, .hub-anim .tl li, .hub-anim .hub-result { animation: hub-in .35s ease-out both; }
@keyframes hub-in { from { opacity: 0; transform: translateY(6px); } }

/* 比較表 */
.compare { border: 1px solid var(--line); border-radius: var(--radius-l); background: var(--card); overflow: hidden; }
.compare-row { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.2fr); }
.compare-row + .compare-row { border-top: 1px solid var(--line); }
.compare-row > span { display: flex; align-items: flex-start; gap: 10px; padding: 16px 18px; font-size: 15px; color: var(--muted); min-width: 0; }
.compare-row > [role="rowheader"] { color: var(--text); font-weight: 700; }
.compare-head > span { font-size: 14px; font-weight: 700; color: var(--text); background: #f1f6f3; white-space: nowrap; }
.compare .is-us { background: var(--green-050); color: var(--text); font-weight: 600; }
.compare-head .is-us { background: var(--ink); color: #fff; }
.mark { position: relative; flex: none; width: 18px; height: 18px; margin-top: 3px; border-radius: 50%; }
.mark.ok { background: var(--green); }
.mark.ok::after { content: ""; position: absolute; left: 6px; top: 3px; width: 5px; height: 9px; border: solid #04140b; border-width: 0 2px 2px 0; transform: rotate(45deg); }
.mark.bad { background: #f6d3d0; }
.mark.bad::before, .mark.bad::after { content: ""; position: absolute; left: 8px; top: 4px; width: 2px; height: 10px; background: var(--red); transform: rotate(45deg); }
.mark.bad::after { transform: rotate(-45deg); }
.mark.mid { background: var(--amber-bg); box-shadow: inset 0 0 0 1.5px #dba64c; }
.mark.mid::after { content: ""; position: absolute; left: 5px; top: 8px; width: 8px; height: 2px; background: var(--amber); }

/* 架構圖 */
.arch { display: grid; grid-template-columns: minmax(0, 1.7fr) 56px minmax(0, 1fr); align-items: center; margin-top: clamp(28px, 4vw, 44px); }
.arch-pc { border: 1.5px solid var(--line-strong); border-radius: var(--radius-l); padding: 18px; background: var(--card); min-width: 0; }
.arch-label { font-weight: 800; font-size: 15px; margin-bottom: 12px; }
.arch-pc-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 14px; }
.arch-desk { display: flex; flex-direction: column; gap: 6px; padding: 16px; border-radius: var(--radius); background: #f1f6f3; color: var(--muted); font-size: 14px; min-width: 0; }
.arch-desk .icon { color: var(--green-700); width: 26px; height: 26px; }
.arch-desk strong { color: var(--text); font-size: 15.5px; }
.arch-box { padding: 14px; border-radius: var(--radius); min-width: 0; }
.arch-box-title { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 14px; color: var(--green); margin-bottom: 10px; }
.arch-node { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 12px; border-radius: 10px; background: var(--ink-2); border: 1px solid var(--ink-line); font-size: 13.5px; color: var(--ink-muted); }
.arch-node + .arch-node { margin-top: 8px; }
.arch-node b { color: #fff; font-size: 15px; }
.arch-node code { flex: none; }
.arch-links { position: relative; height: 100%; min-height: 40px; }
.arch-links span { position: absolute; left: 6px; right: 6px; top: 50%; height: 2px; background: repeating-linear-gradient(90deg, var(--green-700) 0 6px, transparent 6px 11px); }
.arch-links span::before, .arch-links span::after { content: ""; position: absolute; top: -4px; width: 10px; height: 10px; border-radius: 50%; background: var(--green); }
.arch-links span::before { left: -4px; }
.arch-links span::after { right: -4px; }
.arch-cloud { display: grid; gap: 12px; min-width: 0; }
.arch-ext { display: flex; align-items: flex-start; gap: 12px; padding: 16px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--line); font-size: 14px; color: var(--muted); min-width: 0; }
.arch-ext .icon { color: var(--green-700); width: 24px; height: 24px; margin-top: 2px; }
.arch-ext div { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.arch-ext b { color: var(--text); font-size: 15.5px; }
.arch-ext code { align-self: flex-start; }

/* 功能 */
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: clamp(24px, 3vw, 44px); }
.feature { padding: 28px 0 36px; border-top: 1px solid var(--line); min-width: 0; }
.feature .icon { width: 42px; height: 42px; padding: 9px; border-radius: 12px; background: var(--green-050); color: var(--green-700); }
.feature h3 { margin-top: 18px; font-size: 19px; }
.feature p { margin-top: 8px; color: var(--muted); font-size: 15.5px; }

/* 模型 */
.model { background: var(--ink); }
.model-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: start; }
.model h2 { font-size: clamp(27px, 3.1vw, 40px); font-weight: 800; color: #fff; }
.model h2 .mono { color: var(--green); font-weight: 600; }
.model-lead { margin-top: 18px; color: var(--ink-muted); font-size: 17px; }
.model-specs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 24px; margin: 28px 0 0; }
.model-specs > div { padding: 14px 0; border-top: 1px solid var(--ink-line); min-width: 0; }
.model-specs dt { font-size: 13.5px; color: var(--ink-muted); }
.model-specs dd { margin: 4px 0 0; color: #fff; font-weight: 600; }
.route { list-style: none; margin: 0; padding: 0; position: relative; }
.route::before { content: ""; position: absolute; left: 15px; top: 20px; bottom: 20px; width: 2px; background: var(--ink-3); }
.route li { position: relative; display: flex; flex-direction: column; gap: 4px; margin-left: 40px; padding: 16px 18px; border-radius: var(--radius); background: var(--ink-2); border: 1px solid var(--ink-line); }
.route li + li { margin-top: 12px; }
.route li::before { content: ""; position: absolute; left: -31px; top: 22px; width: 12px; height: 12px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px var(--ink); }
.route .route-alt { border-style: dashed; border-color: rgba(245, 183, 74, .45); background: transparent; }
.route .route-alt::before { background: #f5b74a; }
.route-k { font-size: 13px; color: var(--ink-muted); font-weight: 600; }
.route-v { color: #fff; font-weight: 600; }
.route-v.mono { color: var(--green); }
.route-alt .route-v.mono { color: #f5c46a; }
.route-n { font-size: 14px; color: var(--ink-muted); }

/* 安裝步驟 */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; counter-reset: s; }
.step { position: relative; padding: 28px; border-radius: var(--radius-l); background: var(--card); border: 1px solid var(--line); min-width: 0; }
.step-no { display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; background: var(--ink); color: var(--green); font-size: 20px; font-weight: 600; }
.step h3 { margin-top: 18px; font-size: 19px; }
.step p { margin-top: 8px; color: var(--muted); font-size: 15.5px; }
.install-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin-top: 32px; }
.install-cta p { color: var(--muted); }

/* 方案 */
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; align-items: stretch; }
.plans-loading { color: var(--muted); }
.plan { display: flex; flex-direction: column; padding: 28px; border-radius: var(--radius-l); border: 1px solid var(--line); background: var(--paper); min-width: 0; }
.plan.is-featured { background: var(--ink); color: var(--ink-text); border-color: var(--ink); box-shadow: 0 20px 50px rgba(7, 18, 13, .22); }
.plan-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; }
.plan h3 { font-size: 19px; }
.plan.is-featured h3 { color: #fff; }
.plan-sub { margin-top: 6px; color: var(--muted); font-size: 14.5px; min-height: 3em; }
.plan.is-featured .plan-sub { color: var(--ink-muted); }
.plan-price { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 8px; margin-top: 18px; }
.plan-price .cur { font-size: 15px; font-weight: 700; color: var(--muted); }
.plan.is-featured .plan-price .cur { color: var(--ink-muted); }
.plan-price .amt { font-size: 40px; font-weight: 800; line-height: 1.1; font-variant-numeric: tabular-nums; white-space: nowrap; }
.plan-price .cyc { font-size: 14.5px; color: var(--muted); white-space: nowrap; }
.plan.is-featured .plan-price .cyc { color: var(--ink-muted); }
.plan-model { margin-top: 10px; font-size: 13.5px; color: var(--muted); }
.plan.is-featured .plan-model { color: var(--ink-muted); }
.plan ul { list-style: none; margin: 20px 0 24px; padding: 18px 0 0; border-top: 1px solid var(--line); display: grid; gap: 10px; flex: 1; }
.plan.is-featured ul { border-color: var(--ink-line); }
.plan li { position: relative; padding-left: 26px; font-size: 15px; }
.plan li::before { content: ""; position: absolute; left: 3px; top: 6px; width: 6px; height: 11px; border: solid var(--green-700); border-width: 0 2px 2px 0; transform: rotate(45deg); }
.plan.is-featured li::before { border-color: var(--green); }
.plan .btn { width: 100%; }
.plans-note { margin-top: 16px; font-size: 14px; color: var(--faint); }

/* FAQ */
.faq-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.4fr); gap: clamp(24px, 4vw, 64px); align-items: start; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-child { border-top: 1px solid var(--line); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 0; font-size: 17px; font-weight: 700; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; flex: none; width: 12px; height: 12px; border: solid var(--muted); border-width: 0 2px 2px 0; transform: rotate(45deg); margin-right: 4px; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(-135deg); }
.faq details p { padding: 0 0 20px; color: var(--muted); max-width: 46em; }

/* CTA 與頁尾 */
.cta-band { padding: clamp(40px, 6vw, 64px) 0; border-top: 1px solid var(--ink-line); }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; }
.cta-row h2 { font-size: clamp(24px, 2.8vw, 34px); color: #fff; font-weight: 800; }
.site-foot { padding: 32px 0 40px; background: var(--ink-2); }
.foot-row { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 32px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: 14.5px; }
.foot-links a { color: var(--ink-muted) !important; text-decoration: none; }
.foot-links a:hover { color: #fff !important; }
.foot-copy { width: 100%; font-size: 13.5px; color: var(--ink-muted); }

/* 註冊登入 */
.auth-tabs { display: inline-flex; padding: 4px; border-radius: 12px; background: #eef3f0; gap: 4px; }
.auth-tabs button { min-height: 38px; padding: 6px 16px; border: 0; border-radius: 9px; background: transparent; font-weight: 700; color: var(--muted); cursor: pointer; white-space: nowrap; }
.auth-tabs button[aria-selected="true"] { background: var(--card); color: var(--text); box-shadow: 0 1px 3px rgba(7, 18, 13, .12); }
.auth-title { font-size: 22px; font-weight: 800; }
.auth-lead { margin: 6px 0 18px; color: var(--muted); font-size: 15px; }
.auth-submit { width: 100%; margin-top: 16px; }
.auth .form-error { margin-top: 12px; }

/* 響應式 */
@media (max-width: 1320px) {
  .nav-links { position: absolute; top: 100%; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 8px var(--gutter) 16px; background: var(--ink); border-bottom: 1px solid var(--ink-line); }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 12px 0; border-bottom: 1px solid var(--ink-line); font-size: 16px; }
  .nav-admin { padding-left: 0; border-left: 0; }
  .nav-toggle { display: inline-grid; }
}
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
  .spec-plate { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .spec-plate > div:nth-child(3) { padding-left: 0; border-left: 0; }
  .spec-plate > div:nth-child(n+3) { border-top: 1px solid var(--ink-line); }
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .model-grid, .faq-grid { grid-template-columns: minmax(0, 1fr); }
  .arch { grid-template-columns: minmax(0, 1fr); }
  .arch-links { height: 44px; }
  .arch-links span { left: 50%; right: auto; top: 6px; bottom: 6px; width: 2px; height: auto; background: repeating-linear-gradient(180deg, var(--green-700) 0 6px, transparent 6px 11px); }
  .arch-links span::before { left: -4px; top: -4px; }
  .arch-links span::after { left: -4px; right: auto; top: auto; bottom: -4px; }
  .plans { grid-template-columns: minmax(0, 1fr); max-width: 560px; }
  .hub-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 860px) {
  .hub-flow { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .hub-flow li + li::before { left: 28px; top: -22px; width: 2px; height: 16px; }
  .hub-flow li + li::after { left: 23px; top: -10px; border: 6px solid transparent; border-top-color: var(--green-700); border-left-color: transparent; }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .compare { border: 0; background: transparent; border-radius: 0; overflow: visible; display: grid; gap: 12px; }
  .compare-head { display: none; }
  .compare-row { grid-template-columns: minmax(0, 1fr); border: 1px solid var(--line) !important; border-radius: var(--radius); background: var(--card); overflow: hidden; }
  .compare-row > [role="rowheader"] { font-size: 16px; padding-bottom: 6px; }
  .compare-row > [role="cell"] { flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }
  .compare-row > [role="cell"]::before { content: attr(data-col); flex: 0 0 100%; font-size: 12.5px; font-weight: 700; color: var(--faint); margin-bottom: -4px; }
  .compare-row > .is-us { padding-bottom: 14px; }
  .compare-row > .is-us::before { color: var(--green-700); }
}
@media (max-width: 640px) {
  .nav-row { gap: 12px; }
  .brand-domain { display: none; }
  .nav-cta #navLogin { display: none; }
  .nav-login-m { display: block !important; }
  .features { grid-template-columns: minmax(0, 1fr); }
  .hub-picker { grid-template-columns: minmax(0, 1fr); }
  .hub-demo { padding: 16px; }
  .bubble { max-width: 94%; }
  .arch-pc-grid { grid-template-columns: minmax(0, 1fr); }
  .appliance { padding: 8px; border-radius: 14px; }
  .appliance-tabs button { font-size: 13px; padding: 6px 4px; }
  .model-specs { grid-template-columns: minmax(0, 1fr); }
  .spec-plate dt { font-size: 21px; }
  .hero-actions .btn { flex: 1 1 100%; }
  .cta-row .btn { width: 100%; }
}
@media (max-width: 380px) {
  .brand-name { font-size: 15px; }
  .nav-cta .btn-sm { padding: 6px 10px; }
}