/* 功能全景：静态页面，所有动态内容均为功能示意。 */
:root {
    color-scheme:dark;
    --bg:#0b0d16;
    --panel:#121522;
    --text:#f2f2f5;
    --muted:#9599a1;
    --accent:#8e9aff;
    --cyan:#77b0ff;
    --brand-gradient:linear-gradient(115deg,#5065ef,#7945e5);
    --line:rgba(199,202,242,.12);
    --radius:24px;
}

* {
    box-sizing:border-box;
}

html {
    scroll-behavior:smooth;
    scroll-padding-top:96px;
}

body {
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
    -webkit-font-smoothing:antialiased;
    line-height:1.6;
}

body::before {
    content:"";
    position:absolute;
    inset:0 0 auto;
    height:920px;
    z-index:-1;
    background:radial-gradient(ellipse at 76% 34%,#201e3c3b,transparent 58%);
    pointer-events:none;
}

a {
    color:inherit;
    text-decoration:none;
}

button {
    font:inherit;
    color:inherit;
    cursor:pointer;
}

button,a {
    -webkit-tap-highlight-color:transparent;
}

button:focus-visible,a:focus-visible {
    outline:2px solid var(--accent);
    outline-offset:6px;
}

button {
    touch-action:manipulation;
}

img {
    display:block;
    max-width:100%;
}

button svg,a svg {
    pointer-events:none;
}

svg.icon {
    width:22px;
    height:22px;
    flex-shrink:0;
    fill:none;
    stroke:currentColor;
    stroke-width:1.6;
    stroke-linecap:round;
    stroke-linejoin:round;
}

.svg-library {
    position:absolute;
    width:0;
    height:0;
    overflow:hidden;
}

.shell {
    width:min(1200px,calc(100% - 80px));
    margin-inline:auto;
}

.skip-link {
    position:fixed;
    top:12px;
    left:12px;
    padding:12px 20px;
    background:var(--accent);
    color:#0d0c1b;
    transform:translateY(-160%);
    z-index:20;
    border-radius:8px;
}

.skip-link:focus {
    transform:translateY(0);
}

.site-header {
    border-bottom:1px solid var(--line);
}

.header-inner {
    height:90px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
}

.brand {
    display:flex;
    align-items:center;
    gap:11px;
    flex-shrink:0;
}

.brand img {
    border-radius:11px;
    width:36px;
    height:36px;
}

.brand>span {
    font-size:21px;
    font-weight:750;
    letter-spacing:1px;
    display:flex;
    align-items:center;
    gap:13px;
}


.header-nav {
    display:flex;
    align-items:center;
    gap:32px;
    font-size:13px;
    color:var(--muted);
}

.header-nav a {
    transition:color .2s;
}

.header-nav a:hover,.header-nav .current {
    color:var(--text);
}

.current::after {
    content:"";
    display:block;
    height:3px;
    width:15px;
    margin:5px auto -8px;
    border-radius:2px;
    background:var(--accent);
}

.button {
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:22px;
    min-height:52px;
    padding:13px 23px;
    border:1px solid #8d8aff70;
    border-radius:8px;
    color:#fff;
    background:var(--brand-gradient);
    box-shadow:0 6px 24px #5764f52b;
    font-size:14px;
    font-weight:650;
    transition:background .2s,transform .2s;
}

.button:hover {
    background:linear-gradient(115deg,#5367f0,#8551ed);
    transform:translateY(-2px);
}

.button-small {
    min-height:39px;
    padding:7px 16px;
    font-size:12px;
    gap:16px;
}

.button-small .icon {
    width:16px;
    height:16px;
}

.hero {
    display:grid;
    grid-template-columns:.95fr 1.05fr;
    align-items:center;
    gap:28px;
    padding-block:92px 86px;
    min-height:690px;
}

.eyebrow {
    display:flex;
    align-items:center;
    gap:9px;
    font-size:11px;
    letter-spacing:2px;
    color:var(--accent);
    font-weight:550;
    margin:0 0 25px;
}

.live-dot {
    display:inline-block;
    width:6px;
    height:6px;
    border-radius:50%;
    background:var(--accent);
    box-shadow:0 0 12px #8c82f555;
    flex-shrink:0;
}

h1,h2,h3,p,figure {
    margin-top:0;
}

h1 {
    font-size:clamp(48px,4.7vw,68px);
    line-height:1.26;
    letter-spacing:-2.6px;
    font-weight:700;
    margin-bottom:26px;
}

h1>span,h2>span {
    color:var(--accent);
}

.hero h1>span {
    background:linear-gradient(110deg,#6c8cff,#ab70ff);
    background-clip:text;
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}

.hero-description {
    font-size:20px;
    line-height:1.85;
    color:#d7d6de;
    letter-spacing:.5px;
    margin-bottom:14px;
}

.hero-detail {
    font-size:13px;
    color:var(--muted);
    line-height:1.95;
    margin-bottom:28px;
}

.hero-actions {
    display:flex;
    align-items:center;
    gap:26px;
    flex-wrap:wrap;
}

.text-link {
    display:inline-flex;
    align-items:center;
    gap:12px;
    font-size:12px;
    color:#cac9d1;
    transition:color .2s;
}

.text-link:hover {
    color:var(--accent);
}

.text-link .icon {
    width:17px;
    height:17px;
}

.text-link>span {
    font-size:16px;
}

.hero-stats {
    display:flex;
    gap:29px;
    align-items:center;
    margin-top:42px;
}

.hero-stats>div {
    display:flex;
    flex-direction:column;
    gap:3px;
}

.hero-stats strong {
    font-size:30px;
    font-weight:550;
    line-height:1.2;
    letter-spacing:-1px;
    font-variant-numeric:tabular-nums;
}

.hero-stats strong>span {
    font-size:11px;
    letter-spacing:0;
    color:#b5b4c2;
}

.hero-stats div>span {
    color:var(--muted);
    font-size:10px;
}

.stat-divider {
    width:1px;
    height:35px;
    background:var(--line);
}

.hero-visual {
    position:relative;
    min-width:0;
    padding-top:15px;
    isolation:isolate;
}

.visual-orbit {
    position:absolute;
    border:1px solid #b5b2d40a;
    border-radius:50%;
    z-index:-1;
    pointer-events:none;
}

.orbit-one {
    width:530px;
    height:530px;
    top:-50px;
    left:0;
}

.orbit-two {
    width:660px;
    height:660px;
    top:-115px;
    left:-65px;
}

.visual-label {
    color:#858396;
    display:flex;
    align-items:center;
    gap:10px;
    font-size:10px;
    letter-spacing:2px;
    margin:0 0 22px 18px;
}

.cross {
    color:var(--accent);
    font-size:20px;
    font-weight:200;
}

.hud-device {
    border-radius:18px;
    background:linear-gradient(145deg,#181c23,#101321 45%,#10141b);
    border:1px solid #55546580;
    padding:19px 22px 16px;
    box-shadow:0 30px 80px #0007,inset 0 0 0 5px #13161c,0 0 90px #7169c506;
    transform:perspective(1100px) rotateY(-8deg) rotateX(5deg) rotateZ(-2deg);
    transition:transform .6s;
    position:relative;
}

.hud-device::before {
    content:"";
    position:absolute;
    inset:5px;
    border:1px solid #6c6b7b20;
    border-radius:13px;
    pointer-events:none;
}

.device-top,.device-bottom {
    display:flex;
    align-items:center;
    justify-content:space-between;
    font-size:9px;
    color:#838198;
    letter-spacing:1px;
    position:relative;
    z-index:1;
}

.device-top>span:first-child {
    color:#d9d8e9;
    display:flex;
    gap:8px;
    align-items:center;
}

.device-signal {
    margin-left:8px;
    color:var(--accent);
}

.hud-screen {
    height:280px;
    position:relative;
    display:grid;
    grid-template-columns:1fr .85fr;
    gap:10px;
    margin-block:22px 18px;
}

.hud-navigation {
    position:relative;
    min-width:0;
}

.turn-instruction {
    display:flex;
    align-items:center;
    gap:12px;
    position:relative;
    z-index:2;
}

.turn-arrow {
    font-size:46px;
    line-height:1;
    color:var(--accent);
}

.turn-instruction div {
    display:flex;
    flex-direction:column;
    gap:0;
}

.turn-instruction b {
    font-size:25px;
    font-weight:500;
    letter-spacing:1px;
}

.turn-instruction b small {
    font-size:12px;
    color:var(--muted);
}

.turn-instruction div>span {
    font-size:10px;
    color:#adacbc;
}

.route-map {
    width:100%;
    height:178px;
    margin-top:2px;
    mask-image:linear-gradient(transparent,#000 15%,#000 80%,transparent);
}

.map-road {
    stroke:#384050;
    stroke-width:5;
    fill:none;
}

.map-route-shadow {
    stroke:#59539f55;
    stroke-width:20;
    fill:none;
    stroke-linejoin:round;
}

.map-route {
    stroke:var(--accent);
    stroke-width:6;
    fill:none;
    stroke-linejoin:round;
}

.map-location-halo {
    fill:#729ef522;
    stroke:#729ef533;
}

.map-caption {
    display:flex;
    justify-content:space-between;
    font-size:9px;
    color:#9291a3;
    margin-top:-6px;
}

.map-caption b {
    font-weight:450;
    color:#d4d3e1;
}

.hud-speed {
    display:flex;
    align-items:center;
    flex-direction:column;
    padding-top:21px;
}

.speed-label {
    font-size:10px;
    color:#9391a5;
    letter-spacing:3px;
}

.hud-speed>strong {
    font-size:100px;
    line-height:1.15;
    letter-spacing:-5px;
    font-weight:300;
    font-variant-numeric:tabular-nums;
    color:#eae8ff;
    text-shadow:0 0 35px #a79fff14;
}

.speed-unit {
    font-size:11px;
    color:#9f9db3;
    letter-spacing:2px;
}

.speed-sub {
    display:flex;
    align-items:center;
    gap:20px;
    margin-top:25px;
}

.gear {
    color:var(--accent);
    font-size:30px;
    font-weight:400;
}

.range {
    display:flex;
    flex-direction:column;
    gap:3px;
}

.range small {
    font-size:9px;
    color:#8b899f;
}

.range b {
    font-size:16px;
    font-weight:400;
}

.hud-music {
    display:flex;
    align-items:center;
    gap:12px;
    grid-column:1 / -1;
    margin-top:8px;
    border-top:1px solid #77758b24;
    padding-top:13px;
}

.album-art {
    width:34px;
    height:34px;
    border-radius:6px;
    display:grid;
    place-items:center;
    background:linear-gradient(135deg,#403c67,#827db4);
    color:#d9d6fb;
    position:relative;
    flex-shrink:0;
}

.album-art::before {
    content:"";
    width:25px;
    height:25px;
    position:absolute;
    border:1px solid #d4d2ea44;
    border-radius:50%;
}

.album-art .icon {
    width:16px;
    height:16px;
}

.music-info {
    display:flex;
    align-items:center;
    gap:12px;
    font-size:9px;
    flex:1;
}

.music-info>span {
    color:#827f9d;
}

.music-info b {
    font-size:10px;
    font-weight:500;
    color:#c3c1d6;
}

.music-info small {
    display:none;
}

.sound-wave {
    display:flex;
    align-items:center;
    gap:3px;
    height:20px;
}

.sound-wave i {
    height:7px;
    width:2px;
    background:var(--accent);
    animation:sound 1s ease-in-out infinite alternate;
}

.sound-wave i:nth-child(2) {
    height:14px;
    animation-delay:-.6s;
}

.sound-wave i:nth-child(3) {
    height:19px;
    animation-delay:-.2s;
}

.sound-wave i:nth-child(4) {
    height:11px;
    animation-delay:-.8s;
}

.sound-wave i:nth-child(5) {
    animation-delay:-.4s;
}

.device-bottom {
    font-size:8px;
    border-top:1px solid #77758b24;
    padding-top:12px;
    letter-spacing:.5px;
}

.device-bottom>span:first-child {
    display:flex;
    align-items:center;
    gap:5px;
}

.device-bottom i {
    width:4px;
    height:4px;
    border-radius:50%;
    background:var(--accent);
}

.floating-label {
    position:absolute;
    display:flex;
    align-items:center;
    background:#191823ee;
    border:1px solid #b0add130;
    box-shadow:0 14px 40px #0005;
    backdrop-filter:blur(12px);
    border-radius:10px;
    font-size:10px;
    z-index:2;
}

.label-components {
    top:18px;
    right:-10px;
    gap:13px;
    padding:13px 17px;
    transform:rotate(3deg);
}

.label-components>.icon {
    color:var(--accent);
    width:25px;
    height:25px;
}

.label-components b {
    font-weight:500;
    font-size:11px;
    color:#d7d5ea;
}

.label-components span {
    color:#9391a9;
    line-height:1.8;
}

.label-components .label-plus {
    font-size:22px;
    font-weight:250;
    margin-left:8px;
    color:var(--accent);
}

.label-auto {
    left:-24px;
    bottom:110px;
    gap:8px;
    padding:12px 17px;
    transform:rotate(-3deg);
    color:#c6c4d6;
}

.mini-check {
    display:inline-grid;
    place-items:center;
    width:18px;
    height:18px;
    flex-shrink:0;
    border-radius:50%;
    color:var(--accent);
    background:#7b72e215;
    font-size:11px;
}

.demo-note {
    text-align:center;
    font-size:9px;
    color:#838291;
    letter-spacing:.5px;
    margin:12px 0 0;
}

.feature-nav-wrap {
    position:sticky;
    top:0;
    z-index:10;
    border-block:1px solid var(--line);
    background:#0b0d11ed;
    backdrop-filter:blur(18px);
}

.feature-nav {
    display:grid;
    grid-template-columns:repeat(4,1fr);
}

.feature-nav a {
    display:flex;
    align-items:center;
    gap:10px;
    position:relative;
    padding:22px 20px;
    color:#9998a6;
    font-size:12px;
    white-space:nowrap;
    border-right:1px solid var(--line);
    transition:color .2s,background .2s;
}

.feature-nav a:first-child {
    border-left:1px solid var(--line);
}

.feature-nav a>.icon {
    width:19px;
    height:19px;
}

.feature-nav a>span {
    margin-left:auto;
    font-size:10px;
    color:#616071;
}

.feature-nav a.active,.feature-nav a:hover {
    color:var(--accent);
    background:#8c82f504;
}

.feature-nav a.active::after {
    content:"";
    position:absolute;
    inset:auto 0 -1px;
    height:2px;
    background:var(--accent);
}

.section {
    padding-top:102px;
    scroll-margin-top:0;
}

.section-heading {
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:30px;
    margin-bottom:35px;
}

.section .eyebrow {
    font-size:10px;
    letter-spacing:2px;
    margin-bottom:16px;
}

h2 {
    font-size:38px;
    line-height:1.4;
    letter-spacing:-1.4px;
    font-weight:600;
    margin-bottom:0;
}

.section-description {
    font-size:13px;
    line-height:1.95;
    color:var(--muted);
    margin-bottom:3px;
}

.panel {
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
}

.hud-feature-grid {
    display:grid;
    grid-template-columns:.8fr 1.2fr;
    gap:22px;
}

.component-panel {
    padding:30px;
    display:flex;
    flex-direction:column;
    align-items:flex-start;
}

.panel-heading {
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    font-size:11px;
}

.panel-heading>span {
    display:flex;
    align-items:center;
    gap:7px;
}

.chip {
    display:inline-flex;
    align-items:center;
    gap:6px;
    border:1px solid #a39de826;
    color:#b4b1db;
    border-radius:5px;
    padding:4px 9px;
    font-size:9px;
    white-space:nowrap;
}

.subtle {
    color:#838195;
    font-size:10px;
}

.component-count {
    font-size:88px;
    font-weight:350;
    line-height:1.2;
    letter-spacing:-5px;
    color:var(--accent);
    margin-top:23px;
}

.component-count>span {
    font-size:15px;
    letter-spacing:0;
    color:#bcbbc8;
    margin-left:12px;
}

h3 {
    font-weight:550;
    font-size:21px;
    line-height:1.5;
    letter-spacing:-.4px;
    margin-bottom:11px;
}

.component-panel>p,.general-grid article>p {
    color:var(--muted);
    font-size:12px;
    line-height:1.9;
    margin-bottom:23px;
}

.component-tags {
    display:flex;
    gap:7px;
    flex-wrap:wrap;
    margin-bottom:26px;
    max-width:350px;
}

.component-tags>span {
    display:flex;
    align-items:center;
    gap:5px;
    font-size:10px;
    padding:6px 10px;
    border-radius:5px;
    background:#cac7e607;
    border:1px solid #bab7d712;
    color:#bebdcc;
}

.component-tags .icon {
    width:12px;
    height:12px;
}

.component-tags>.more-tag {
    color:var(--accent);
    border-color:#948ce730;
}

.component-panel .text-link {
    margin-top:auto;
    font-size:11px;
}

.hud-photo {
    margin:0;
    position:relative;
    min-height:440px;
    display:grid;
    grid-template-rows:minmax(170px,1fr) auto;
    background:#0c1114;
}

.hud-photo-media {
    position:relative;
    overflow:hidden;
}

.hud-photo-media>img {
    position:absolute;
    inset:0;
    width:100%;
    height:100%;
    object-fit:cover;
    object-position:center 52%;
    opacity:.95;
}

.hud-photo-media::after {
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg,#0c111400 80%,#0c1114);
}

.hud-photo figcaption {
    position:relative;
    z-index:1;
    padding:30px;
    width:100%;
}

.photo-tag {
    display:inline-flex;
    gap:6px;
    align-items:center;
    font-size:9px;
    color:#c6c5d4;
    padding:5px 9px;
    background:#0a0f18bb;
    border:1px solid #a9a7c433;
    border-radius:4px;
    margin-bottom:15px;
}

.hud-photo figcaption h3 {
    font-size:24px;
    margin-bottom:5px;
}

.hud-photo figcaption p {
    font-size:12px;
    color:#a1a0b1;
    margin-bottom:0;
}

.feature-strip {
    display:grid;
    grid-template-columns:repeat(3,1fr);
    margin-top:24px;
    padding:23px 0;
    border-bottom:1px solid var(--line);
}

.feature-strip>div {
    display:flex;
    align-items:center;
    justify-content:center;
    gap:14px;
    border-right:1px solid var(--line);
}

.feature-strip>div:last-child {
    border:0;
}

.feature-strip .icon {
    color:var(--accent);
    width:25px;
    height:25px;
}

.feature-strip span {
    display:flex;
    flex-direction:column;
    gap:3px;
}

.feature-strip b {
    font-size:12px;
    font-weight:500;
}

.feature-strip small {
    font-size:10px;
    color:var(--muted);
}

.general-grid {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:22px;
}

.general-grid article {
    padding:30px 30px 0;
}

.card-kicker {
    display:flex;
    align-items:center;
    gap:9px;
    color:var(--cyan);
    font-size:11px;
    letter-spacing:1px;
    margin-bottom:22px;
}

.card-kicker .icon {
    width:19px;
    height:19px;
}

.orb-panel .card-kicker {
    color:var(--accent);
}

.general-grid h3 {
    font-size:22px;
}

.general-grid article>p {
    margin-bottom:18px;
}

.traffic-scene {
    background:linear-gradient(160deg,#151a24,#0f131b);
}

.scene-road {
    position:absolute;
    inset:-50px;
    background:repeating-linear-gradient(0deg,transparent 0 56px,#ada9d807 57px 58px,transparent 59px 98px),repeating-linear-gradient(90deg,transparent 0 88px,#ada9d807 89px 90px,transparent 91px 135px);
    transform:rotate(-18deg) scale(1.1);
}

.scene-route {
    position:absolute;
    inset:45px 0 0 15%;
    width:80%;
    height:200px;
    overflow:visible;
}

.scene-route>path {
    fill:none;
    stroke:#5874ab30;
    stroke-width:16;
    stroke-linejoin:round;
}

.scene-route>path.route-dash {
    stroke:var(--cyan);
    stroke-width:4;
}

.street {
    position:absolute;
    font-size:9px;
    color:#525c6f;
    letter-spacing:2px;
}

.street-one {
    left:13%;
    top:70px;
    transform:rotate(-18deg);
}

.street-two {
    right:18%;
    bottom:35px;
    transform:rotate(-18deg);
}

.scene-position {
    position:absolute;
    bottom:29px;
    left:53%;
    color:var(--cyan);
    font-size:25px;
    text-shadow:0 0 18px #7e9ede70;
}

.scene-note {
    position:absolute;
    bottom:14px;
    left:20px;
    font-size:8px;
    color:#706e81;
}

.status-section {
    display:grid;
    grid-template-columns:.85fr 1.15fr;
    gap:80px;
    align-items:center;
}

.automation-layout {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:40px;
    align-items:center;
}

.automation-options {
    display:flex;
    flex-direction:column;
    gap:8px;
}

.automation-option {
    display:flex;
    align-items:center;
    gap:18px;
    padding:20px;
    border:1px solid transparent;
    border-radius:12px;
    background:transparent;
    text-align:left;
    width:100%;
    transition:background .2s,border .2s;
}

.automation-option[aria-pressed="true"] {
    background:#8a82e709;
    border-color:#8a82e730;
}

.automation-option:hover {
    background:#8a82e706;
}

.scenario-icon {
    width:40px;
    height:40px;
    display:grid;
    place-items:center;
    background:#a19fb409;
    border:1px solid var(--line);
    border-radius:10px;
    font-size:23px;
    font-weight:400;
    color:#a6a5b6;
    flex-shrink:0;
}

.scenario-icon .icon {
    width:21px;
    height:21px;
}

.automation-option[aria-pressed="true"] .scenario-icon {
    background:#8a82e712;
    color:var(--accent);
    border-color:#8a82e720;
}

.automation-option>span:nth-child(2) {
    display:flex;
    flex-direction:column;
    gap:5px;
}

.automation-option b {
    font-size:14px;
    font-weight:500;
}

.automation-option small {
    font-size:10px;
    color:var(--muted);
}

.automation-option>.icon {
    margin-left:auto;
    color:#67657b;
    width:17px;
    height:17px;
}

.automation-option[aria-pressed="true"]>.icon {
    color:var(--accent);
}

.automation-demo {
    padding:26px 30px;
    background:radial-gradient(ellipse at 50% 45%,#5c54af20,transparent 65%),#101319;
}

.automation-demo .chip {
    border:0;
    background:#8c82f50b;
}

.flow {
    max-width:330px;
    margin:34px auto 25px;
}

.flow-caption {
    display:block;
    font-size:9px;
    color:#85839c;
    letter-spacing:1px;
    margin:0 0 8px 4px;
}

.flow-node {
    display:flex;
    align-items:center;
    gap:13px;
    border:1px solid #8f8bb92e;
    border-radius:9px;
    padding:17px;
    background:#1c1b27;
    color:#cbc8e8;
    font-size:13px;
}

.flow-symbol {
    display:grid;
    place-items:center;
    width:27px;
    height:27px;
    border-radius:5px;
    font-size:19px;
    background:#9b95dc14;
    color:var(--accent);
}

.flow-check {
    margin-left:auto;
    color:var(--accent);
    font-size:11px;
}

.flow-connector {
    height:48px;
    position:relative;
    margin-left:28px;
    display:flex;
    align-items:center;
    gap:12px;
    color:#757292;
    font-size:9px;
}

.flow-connector::before {
    content:"";
    position:absolute;
    left:0;
    top:0;
    bottom:0;
    width:1px;
    background:#7d75d845;
}

.flow-connector i {
    width:5px;
    height:5px;
    border-radius:50%;
    background:var(--accent);
    transform:translateX(-2px);
    animation:flow 2.2s ease-in-out infinite;
}

.flow-connector>span {
    margin-left:4px;
    background:#161520;
}

.action-node {
    border-color:#8a82e74d;
    background:#8a82e70c;
}

.action-node>.icon {
    color:var(--accent);
    width:27px;
    height:27px;
}

.automation-result {
    display:flex;
    gap:9px;
    align-items:center;
    justify-content:center;
    padding-top:20px;
    border-top:1px solid var(--line);
    font-size:10px;
    color:#a29fc4;
}

.automation-demo .demo-note {
    font-size:8px;
    margin-top:15px;
}

.continuing {
    display:flex;
    align-items:center;
    justify-content:center;
    gap:9px;
    margin:33px 0 0;
    color:#acaac2;
    font-size:11px;
}

.continuing>span:last-child {
    color:#6e6c83;
    margin-left:7px;
}

.cta-section {
    position:relative;
    overflow:hidden;
    border:1px solid #978ff526;
    border-radius:var(--radius);
    background:linear-gradient(115deg,#171621,#0c0f14);
    padding:54px 55px;
    margin-top:110px;
    min-height:330px;
}

.cta-content {
    position:relative;
    z-index:1;
}

.cta-content .eyebrow {
    font-size:10px;
    margin-bottom:16px;
}

.cta-content h2 {
    font-size:36px;
    line-height:1.4;
    margin-bottom:15px;
}

.cta-content>p:not(.eyebrow) {
    font-size:12px;
    color:#918fab;
    margin-bottom:24px;
}

.cta-content .button {
    min-height:46px;
    font-size:12px;
    padding:10px 19px;
}

.cta-art {
    position:absolute;
    right:9%;
    top:50%;
    width:320px;
    height:320px;
    transform:translateY(-50%);
    display:grid;
    place-items:center;
}

.cta-art>span {
    font-size:76px;
    letter-spacing:-5px;
    color:#9b94ed29;
    font-weight:600;
    transform:rotate(-18deg);
}

.cta-art>div {
    position:absolute;
    width:100%;
    height:100%;
    border:1px solid #9b95db20;
    border-radius:50%;
    transform:rotateX(55deg) rotateZ(-25deg);
}

.cta-art>div:nth-of-type(2) {
    width:135%;
    height:135%;
    border-color:#9b95db10;
}

.cta-art>div:nth-of-type(3) {
    width:170%;
    height:170%;
    border-color:#9b95db09;
}

.availability {
    font-size:9px;
    color:#7d7c8c;
    line-height:1.9;
    margin-block:21px 65px;
    text-align:center;
}

.availability a {
    color:#9e9cba;
    text-decoration:underline;
    text-underline-offset:3px;
}

.site-footer {
    padding-block:25px 35px;
    border-top:1px solid var(--line);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    font-size:9px;
    color:#7c7b8b;
}

.footer-brand {
    font-size:18px;
    letter-spacing:.5px;
    color:#abaabb;
    font-weight:600;
    display:flex;
    align-items:center;
    gap:10px;
}

.footer-brand span {
    font-size:10px;
    font-weight:400;
    color:#716f84;
}

.site-footer>a:last-child:hover {
    color:var(--accent);
}

.motion-enabled .reveal {
    opacity:0;
    transform:translateY(20px);
    transition:opacity .65s,transform .65s;
}

.motion-enabled .reveal.is-visible {
    opacity:1;
    transform:translateY(0);
}

@keyframes sound {
    to {
        transform:scaleY(.4);
    }
}

@keyframes flow {
    0%,100% {
        transform:translate(-2px,-16px);
        opacity:.2;
    }
    50% {
        transform:translate(-2px,16px);
        opacity:1;
    }
}

@media(min-width:1500px) {
    .hero {
        padding-block:110px;
    }
    .hud-screen {
        height:295px;
    }
    .route-map {
        height:190px;
    }
}

@media(max-width:1100px) {
    .shell {
        width:calc(100% - 56px);
    }
    .hero {
        gap:20px;
        padding-block:70px;
    }
    .hero-visual {
        padding-left:10px;
    }
    .hud-device {
        padding-inline:17px;
    }
    .hud-screen {
        height:265px;
    }
    .hud-speed>strong {
        font-size:82px;
    }
    .route-map {
        height:163px;
    }
    .music-info>span {
        display:none;
    }
    .label-components {
        right:-5px;
    }
    .label-auto {
        left:-5px;
    }
    .orbit-one {
        width:420px;
        height:420px;
    }
    .orbit-two {
        width:530px;
        height:530px;
    }
    .status-section {
        gap:35px;
    }
    .component-panel {
        padding:25px;
    }
    .automation-layout {
        gap:20px;
    }
    .automation-option {
        gap:13px;
        padding:18px 14px;
    }
}

@media(max-width:800px) {
    .header-inner {
        height:76px;
    }
    .header-nav {
        gap:20px;
        font-size:12px;
    }
    .hero {
        grid-template-columns:1fr;
        padding-block:58px 45px;
        gap:46px;
        max-width:640px;
    }
    .hero-copy {
        position:relative;
    }
    .hero h1 {
        font-size:58px;
    }
    .hero-description {
        font-size:18px;
    }
    .hero-detail {
        font-size:12px;
    }
    .hero-stats {
        position:absolute;
        bottom:4px;
        right:0;
        flex-direction:column;
        align-items:flex-start;
        gap:20px;
        margin:0;
    }
    .hero-stats strong {
        font-size:26px;
    }
    .stat-divider {
        display:none;
    }
    .hero-actions {
        gap:22px;
    }
    .hero-visual {
        width:100%;
        max-width:500px;
        margin:auto;
        padding-left:0;
    }
    .visual-label {
        margin-left:15px;
    }
    .hud-screen {
        height:280px;
    }
    .route-map {
        height:178px;
    }
    .hud-speed>strong {
        font-size:100px;
    }
    .music-info>span {
        display:inline;
    }
    .label-auto {
        left:-12px;
    }
    .label-components {
        right:-7px;
    }
    .visual-orbit {
        display:none;
    }
    .feature-nav .icon {
        display:none;
    }
    .feature-nav a {
        padding:19px 13px;
        font-size:11px;
    }
    .feature-nav a>span {
        font-size:8px;
    }
    .section {
        padding-top:75px;
    }
    .section-heading {
        align-items:flex-start;
        flex-direction:column;
        gap:15px;
        margin-bottom:26px;
    }
    .section-heading .section-description br {
        display:none;
    }
    h2 {
        font-size:32px;
    }
    .hud-feature-grid {
        grid-template-columns:1fr 1fr;
        gap:16px;
    }
    .component-panel {
        padding:23px;
    }
    .component-count {
        font-size:72px;
    }
    .component-count>span {
        font-size:12px;
        margin-left:8px;
    }
    .component-panel h3 {
        font-size:18px;
    }
    .component-tags {
        gap:5px;
    }
    .component-tags>span {
        padding:5px 7px;
        font-size:9px;
    }
    .hud-photo {
        min-height:430px;
    }
    .hud-photo figcaption {
        padding:22px;
    }
    .hud-photo figcaption h3 {
        font-size:20px;
    }
    .hud-photo figcaption p {
        font-size:11px;
    }
    .general-grid {
        gap:16px;
    }
    .general-grid article {
        padding:24px 23px 0;
    }
    .general-grid h3 {
        font-size:18px;
    }
    .general-grid article>p {
        font-size:11px;
    }
    .feature-strip>div {
        gap:10px;
    }
    .feature-strip .icon {
        width:20px;
        height:20px;
    }
    .feature-strip b {
        font-size:11px;
    }
    .feature-strip small {
        font-size:8px;
    }
    .status-section {
        grid-template-columns:1fr 1.2fr;
        gap:25px;
    }
    .automation-layout {
        gap:15px;
        grid-template-columns:1fr 1fr;
    }
    .automation-option {
        padding:17px 10px;
        gap:10px;
    }
    .scenario-icon {
        width:32px;
        height:32px;
        font-size:19px;
    }
    .automation-option b {
        font-size:11px;
    }
    .automation-option small {
        font-size:9px;
    }
    .automation-option>.icon {
        display:none;
    }
    .automation-demo {
        padding:22px 18px;
    }
    .flow-node {
        font-size:11px;
        padding:15px 10px;
        gap:8px;
    }
    .flow-symbol {
        width:24px;
        height:24px;
    }
    .automation-result {
        font-size:9px;
    }
    .cta-section {
        margin-top:80px;
        padding:40px 35px;
    }
    .cta-art {
        right:-15%;
        opacity:.65;
    }
    .cta-content h2 {
        font-size:32px;
    }
    .site-footer {
        flex-wrap:wrap;
    }
    .site-footer>span {
        order:3;
        width:100%;
        font-size:8px;
    }
}

@media(max-width:540px) {
    .shell {
        width:calc(100% - 40px);
    }
    .header-inner {
        height:68px;
        gap:12px;
        flex-wrap:wrap;
    }
    .brand {
        gap:9px;
    }
    .brand img {
        width:31px;
        height:31px;
        border-radius:9px;
    }
    .brand>span {
        font-size:16px;
        letter-spacing:0;
    }
    .header-nav {
        gap:12px;
        margin-left:auto;
        font-size:10px;
    }
    .header-download {
        display:none;
    }
    .hero {
        padding-top:44px;
        gap:30px;
    }
    .eyebrow {
        font-size:10px;
        letter-spacing:1.5px;
        margin-bottom:21px;
    }
    .hero h1 {
        font-size:49px;
        letter-spacing:-2px;
        margin-bottom:21px;
    }
    .hero-description {
        font-size:17px;
        margin-bottom:12px;
        line-height:1.8;
    }
    .hero-detail {
        font-size:11px;
        line-height:1.95;
        margin-bottom:25px;
    }
    .hero-actions {
        gap:20px;
    }
    .hero-actions .button {
        font-size:12px;
        gap:17px;
        min-height:47px;
        padding:11px 18px;
    }
    .hero-actions .text-link {
        font-size:11px;
        gap:6px;
    }
    .hero-stats {
        position:static;
        flex-direction:row;
        gap:29px;
        margin-top:30px;
        align-items:center;
    }
    .hero-stats strong {
        font-size:26px;
    }
    .hero-stats div>span {
        font-size:9px;
    }
    .stat-divider {
        display:block;
        height:28px;
    }
    .hero-visual {
        padding-top:9px;
    }
    .visual-label {
        font-size:8px;
        letter-spacing:1px;
        margin:0 0 20px 8px;
    }
    .hud-device {
        transform:perspective(1100px) rotateY(-4deg) rotateX(3deg) rotateZ(-1deg);
        padding:16px 17px 13px;
        border-radius:15px;
    }
    .hud-screen {
        height:255px;
        gap:4px;
        margin-block:21px 14px;
    }
    .turn-instruction {
        gap:7px;
    }
    .turn-arrow {
        font-size:37px;
    }
    .turn-instruction b {
        font-size:22px;
    }
    .turn-instruction div>span {
        font-size:8px;
    }
    .route-map {
        height:151px;
    }
    .map-caption {
        font-size:7px;
    }
    .hud-speed {
        padding-top:20px;
    }
    .speed-label {
        font-size:8px;
        letter-spacing:2px;
    }
    .hud-speed>strong {
        font-size:79px;
    }
    .speed-unit {
        font-size:9px;
    }
    .speed-sub {
        gap:15px;
        margin-top:24px;
    }
    .gear {
        font-size:25px;
    }
    .range b {
        font-size:14px;
    }
    .range small {
        font-size:8px;
    }
    .hud-music {
        gap:9px;
        padding-top:12px;
    }
    .album-art {
        width:30px;
        height:30px;
    }
    .music-info {
        gap:7px;
    }
    .music-info>span {
        display:none;
    }
    .music-info b {
        font-size:9px;
    }
    .device-top {
        font-size:8px;
    }
    .device-bottom {
        font-size:7px;
    }
    .floating-label {
        font-size:8px;
    }
    .label-components {
        top:11px;
        right:-3px;
        padding:9px 11px;
        gap:9px;
    }
    .label-components>.icon {
        width:19px;
        height:19px;
    }
    .label-components b {
        font-size:9px;
    }
    .label-components .label-plus {
        font-size:18px;
        margin-left:2px;
    }
    .label-auto {
        bottom:104px;
        left:-6px;
        padding:9px 12px;
    }
    .demo-note {
        font-size:8px;
    }
    .feature-nav.shell {
        width:100%;
    }
    .feature-nav a {
        font-size:10px;
        justify-content:center;
        padding:19px 4px;
        gap:0;
        border:0;
    }
    .feature-nav a:first-child {
        border:0;
    }
    .feature-nav a>span {
        display:none;
    }
    .section {
        padding-top:62px;
    }
    .section-heading {
        gap:13px;
        margin-bottom:24px;
    }
    .section .eyebrow {
        font-size:9px;
        margin-bottom:14px;
    }
    h2 {
        font-size:29px;
        letter-spacing:-1px;
    }
    .section-description {
        font-size:11px;
    }
    .hud-feature-grid,.general-grid {
        grid-template-columns:1fr;
        gap:16px;
    }
    .component-panel {
        padding:25px;
    }
    .component-count {
        font-size:80px;
        margin-top:18px;
    }
    .component-count>span {
        font-size:13px;
    }
    .component-panel h3 {
        font-size:21px;
    }
    .component-panel>p {
        font-size:12px;
    }
    .component-tags {
        gap:7px;
        margin-bottom:23px;
        max-width:none;
    }
    .component-tags>span {
        font-size:10px;
        padding:6px 9px;
    }
    .hud-photo {
        min-height:295px;
    }
    .hud-photo figcaption {
        padding:23px;
    }
    .hud-photo figcaption h3 {
        font-size:21px;
    }
    .feature-strip {
        padding:12px 0 18px;
        margin-top:15px;
        gap:8px;
    }
    .feature-strip>div {
        align-items:flex-start;
        justify-content:flex-start;
        flex-direction:column;
        gap:8px;
        padding:5px 6px;
        border:0;
    }
    .feature-strip b {
        font-size:10px;
    }
    .feature-strip small {
        font-size:8px;
        line-height:1.7;
        max-width:85px;
    }
    .feature-strip .icon {
        width:21px;
        height:21px;
    }
    .general-grid article {
        padding:26px 25px 0;
    }
    .general-grid h3 {
        font-size:21px;
    }
    .general-grid article>p {
        font-size:12px;
    }
    .card-kicker {
        margin-bottom:18px;
    }
    .status-section {
        grid-template-columns:1fr;
        gap:27px;
    }
    .automation-layout {
        grid-template-columns:1fr;
        gap:20px;
    }
    .automation-option {
        padding:17px 15px;
        gap:14px;
    }
    .scenario-icon {
        width:37px;
        height:37px;
        font-size:22px;
    }
    .automation-option b {
        font-size:13px;
    }
    .automation-option small {
        font-size:10px;
    }
    .automation-option>.icon {
        display:block;
    }
    .automation-demo {
        padding:25px;
    }
    .flow {
        margin-block:28px 24px;
    }
    .flow-node {
        padding:17px 14px;
        font-size:12px;
        gap:12px;
    }
    .flow-caption {
        font-size:9px;
    }
    .flow-symbol {
        width:27px;
        height:27px;
    }
    .automation-result {
        font-size:10px;
    }
    .continuing {
        font-size:10px;
        gap:7px;
        flex-wrap:wrap;
    }
    .continuing>span:last-child {
        display:block;
        width:100%;
        margin-left:0;
        text-align:center;
        font-size:9px;
    }
    .cta-section {
        margin-top:65px;
        padding:34px 25px;
        min-height:340px;
    }
    .cta-content h2 {
        font-size:29px;
    }
    .cta-content>p:not(.eyebrow) {
        font-size:11px;
        max-width:230px;
        line-height:1.9;
    }
    .cta-content .eyebrow {
        font-size:9px;
    }
    .cta-content .hero-actions {
        gap:17px;
    }
    .cta-content .text-link {
        font-size:10px;
    }
    .cta-content .button {
        font-size:11px;
        padding-inline:13px;
        gap:12px;
    }
    .cta-art {
        width:210px;
        height:210px;
        right:-105px;
        top:32%;
        opacity:.65;
    }
    .cta-art>span {
        font-size:48px;
    }
    .availability {
        font-size:8px;
        margin-block:19px 40px;
    }
    .site-footer {
        padding-block:24px 28px;
        gap:13px;
    }
    .footer-brand {
        font-size:17px;
    }
    .footer-brand span {
        font-size:9px;
    }
    .site-footer>a:last-child {
        font-size:9px;
    }
}

@media(prefers-reduced-motion:reduce) {
    html {
        scroll-behavior:auto;
    }
    *,*::before,*::after {
        animation:none!important;
        transition:none!important;
    }
    .motion-enabled .reveal {
        opacity:1;
        transform:none;
    }
}

/* HUD 核心功能、在线分享、方控与收费范围。 */
.feature-nav { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.back-to-top { position: fixed; right: 24px; bottom: calc(24px + env(safe-area-inset-bottom, 0px)); z-index: 20; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; width: 54px; height: 62px; border: 1px solid #8c82f550; border-radius: 14px; background: #131220f2; color: var(--accent); box-shadow: 0 6px 24px #0005; backdrop-filter: blur(12px); transition: background .2s, transform .2s; }
.back-to-top[hidden] { display: none; }
.back-to-top:hover { background: #24223c; transform: translateY(-3px); }
.back-to-top .icon { width: 21px; height: 21px; transform: rotate(-90deg); }
.back-to-top>span { font-size: 10px; letter-spacing: 1px; }
.section-heading h2>span,.access-heading h2>span { display: inline-block; }
.hero-cost { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 13px; margin: 20px 0 0; font-size: 10px; }
.hero-cost>span { color: var(--accent); background: #968ee90b; border: 1px solid #968ee920; padding: 4px 8px; border-radius: 4px; }
.hero-cost a { color: #adacb9; text-underline-offset: 4px; }
.hero-cost a:hover { color: var(--accent); text-decoration: underline; }
.hero-stats { margin-top: 25px; }
.free-chip,.paid-chip { display: inline-flex; width: fit-content; align-items: center; padding: 4px 8px; border: 1px solid #968ee925; border-radius: 4px; background: #968ee909; color: #8c82f5; font-size: 10px; font-weight: 450; line-height: 1.5; letter-spacing: .3px; }
.paid-chip { color: #eac68b; background: #eac68b08; border-color: #eac68b26; }
.paid-inline { color: #eac68b; font-size: 8px; padding-left: 1px; }
.online-layout-panel { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 60px; padding: 40px; margin-top: 34px; background: radial-gradient(ellipse at 83% 40%,#726acf08,transparent 65%),var(--panel); }
.online-layout-copy { min-width: 0; }
.online-layout-copy .card-kicker { color: var(--accent); gap: 10px; margin-bottom: 19px; flex-wrap: wrap; }
.online-layout-copy h3 { font-size: 30px; line-height: 1.5; letter-spacing: -.8px; margin-bottom: 16px; }
.online-layout-copy>p:not(.card-kicker) { font-size: 12px; line-height: 1.95; color: var(--muted); }
.online-benefits { display: flex; flex-direction: column; gap: 10px; margin: 22px 0; padding: 0; list-style: none; }
.online-benefits li { display: flex; align-items: center; gap: 9px; font-size: 12px; color: #c6c5d7; }
.online-benefits .icon { width: 15px; height: 15px; color: var(--accent); }
.online-layout-copy>p.online-entry { font-size: 10px; color: #9391ad; margin-bottom: 0; }
.share-journey { border: 1px solid #a49fd724; background: #0b0a11; border-radius: 14px; padding: 25px; }
.share-step { display: flex; align-items: center; gap: 12px; }
.share-step-number { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; border: 1px solid #8c82f530; color: var(--accent); font-size: 10px; flex-shrink: 0; }
.share-step>div { display: flex; flex-direction: column; gap: 4px; }
.share-step b { font-size: 13px; font-weight: 500; }
.share-step div>span { font-size: 10px; color: #8987a2; }
.share-step>.icon { width: 20px; height: 20px; color: #adaad2; margin-left: auto; }
.share-code { text-align: center; margin-block: 23px; padding-block: 25px; border-block: 1px solid #8c82f515; }
.share-code>span { display: block; color: #85839c; font-size: 10px; }
.share-code-digits { display: grid; grid-template-columns: repeat(6,minmax(0,1fr)); gap: 7px; max-width: 320px; margin: 15px auto 17px; }
.share-code-digits>span { display: grid; place-items: center; height: 55px; border: 1px solid #a49fd730; border-radius: 6px; background: #8c82f505; font-size: 27px; font-weight: 350; color: #beb8fb; font-variant-numeric: tabular-nums; }
.steering-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 65px; align-items: center; padding: 40px; background: radial-gradient(ellipse at 83% 45%,#7e9ede09,transparent 60%),var(--panel); }
.steering-copy .card-kicker { color: var(--cyan); margin-bottom: 22px; flex-wrap: wrap; }
.steering-copy h3 { font-size: 30px; line-height: 1.5; margin-bottom: 17px; }
.steering-copy>p:not(.card-kicker) { font-size: 12px; color: var(--muted); line-height: 1.95; }
.steering-capabilities { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 23px; }
.steering-capabilities>span { padding: 6px 10px; border: 1px solid #7e9ede26; border-radius: 5px; font-size: 10px; color: #bbc4d5; background: #7e9ede05; }
.steering-diagram { padding: 23px; background: #0b1316; border: 1px solid #7e9ede24; border-radius: 14px; }
.steering-input { display: flex; align-items: center; gap: 21px; padding: 21px; border: 1px solid #7e9ede23; border-radius: 10px; background: #151b27; }
.steering-input>.icon { width: 50px; height: 50px; color: #b4c6e9; }
.steering-input>div { display: flex; flex-direction: column; gap: 8px; }
.steering-input b { font-size: 15px; font-weight: 500; }
.steering-input div>span { color: #959fb3; font-size: 10px; }
.steering-connection { display: flex; align-items: center; justify-content: center; gap: 12px; margin-block: 22px; color: #8894ab; font-size: 10px; }
.steering-connection i { display: block; width: 25px; height: 1px; background: #7e9ede40; }
.voice-input { border-color: #968ee920; background: #171620; }
.voice-input>.icon { width: 42px; height: 42px; margin-inline: 4px; color: #b7b3e1; }
.voice-phrases { display: flex; flex-wrap: wrap; gap: 8px; }
.voice-phrases>span { padding: 4px 7px; border-radius: 4px; border: 1px solid #968ee920; color: #b1aed5; font-size: 11px; }
.access-section { margin-top: 100px; scroll-margin-top: 100px; }
.access-heading { margin-bottom: 30px; }
.access-heading .eyebrow { margin-bottom: 17px; font-size: 10px; }
.access-heading>p:last-child { color: var(--muted); font-size: 13px; margin: 16px 0 0; }
.access-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.access-card { border: 1px solid #968ee922; border-radius: 18px; padding: 30px; background: #968ee904; }
.access-card h3 { font-size: 23px; margin: 23px 0 13px; }
.access-card>p { color: var(--muted); font-size: 12px; line-height: 1.95; margin: 0; max-width: 440px; }
.paid-access { background: #eac68b03; border-color: #eac68b22; }
.paid-access h3>span { font-size: 14px; color: var(--muted); margin-inline: 4px; }
.paid-feature-links { display: flex; gap: 27px; flex-wrap: wrap; margin-top: 22px; font-size: 11px; color: #d0bd9e; }
.paid-feature-links a { display: inline-flex; align-items: center; gap: 8px; }
.paid-feature-links a:hover { color: #f8d799; }
.compatibility-section { display: grid; grid-template-columns: 250px minmax(0,1fr); gap: 40px; align-items: center; margin-top: 60px; padding: 30px; border: 1px solid var(--line); border-radius: 18px; background: #ffffff02; }
.compatibility-heading .eyebrow { font-size: 10px; margin-bottom: 12px; }
.compatibility-heading h2 { font-size: 26px; letter-spacing: -.5px; scroll-margin-top: 110px; }
.compatibility-heading>p:not(.eyebrow) { font-size: 11px; color: var(--muted); margin: 12px 0 15px; }
.compatible-models { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0; list-style: none; }
.compatible-models li { max-width: 100%; padding: 9px 12px; border: 1px solid #968ee91c; border-radius: 6px; background: #968ee904; color: #c4c3d4; font-size: 12px; line-height: 1.7; }

@media (max-width: 1100px) {
    .online-layout-panel,.steering-panel { gap: 30px; padding: 30px; }
    .share-journey,.steering-diagram { padding: 20px; }
    .feature-nav a { padding-inline: 14px; }
}
@media (max-width: 800px) {
    .compatibility-section { grid-template-columns: minmax(0,1fr); gap: 25px; margin-top: 45px; padding: 25px; }
    .hero-stats { position: static; flex-direction: row; align-items: center; margin-top: 25px; }
    .stat-divider { display: block; }
    .feature-nav a { padding-inline: 9px; font-size: 10px; }
    .online-layout-panel,.steering-panel { gap: 23px; padding: 25px; }
    .online-layout-copy h3,.steering-copy h3 { font-size: 26px; }
    .online-layout-copy>p:not(.card-kicker),.steering-copy>p:not(.card-kicker) { font-size: 11px; }
    .online-benefits li { font-size: 10px; gap: 6px; }
    .online-benefits .icon { width: 12px; height: 12px; }
    .share-journey,.steering-diagram { padding: 17px; }
    .share-step { gap: 8px; }
    .share-step-number { width: 24px; height: 24px; font-size: 8px; }
    .share-step b { font-size: 11px; }
    .share-step div>span { font-size: 8px; }
    .share-step>.icon { width: 16px; height: 16px; }
    .share-code-digits { gap: 4px; }
    .share-code-digits>span { height: 41px; font-size: 22px; }
    .share-code>span { font-size: 8px; }
    .steering-input { gap: 13px; padding: 15px 12px; }
    .steering-input>.icon { width: 35px; height: 35px; }
    .steering-input b { font-size: 12px; }
    .steering-input div>span { font-size: 8px; }
    .voice-input>.icon { width: 29px; height: 29px; margin-inline: 3px; }
    .voice-phrases { gap: 5px; }
    .voice-phrases>span { font-size: 9px; padding: 3px 5px; }
    .steering-connection { font-size: 8px; gap: 7px; }
    .steering-connection i { width: 14px; }
    .access-section { margin-top: 75px; }
    .access-card { padding: 24px; }
    .access-card h3 { font-size: 20px; }
    .access-card>p { font-size: 11px; }
}
@media (max-width: 540px) {
    .back-to-top { width: 48px; height: 56px; right: 16px; bottom: calc(16px + env(safe-area-inset-bottom, 0px)); }
    .compatibility-section { margin-top: 35px; }
    .compatible-models { gap: 8px; }
    .compatible-models li { font-size: 11px; padding: 8px 10px; }
    .hero-cost { font-size: 9px; gap: 8px 10px; }
    .feature-nav a { font-size: 9px; padding: 18px 3px; }
    .online-layout-panel,.steering-panel { grid-template-columns: minmax(0,1fr); gap: 26px; padding: 25px; }
    .online-layout-panel { margin-top: 25px; }
    .online-layout-copy h3,.steering-copy h3 { font-size: 27px; }
    .online-layout-copy>p:not(.card-kicker),.steering-copy>p:not(.card-kicker) { font-size: 12px; }
    .online-benefits { gap: 12px; margin-block: 20px; }
    .online-benefits li { font-size: 11px; line-height: 1.8; }
    .online-benefits .icon { width: 14px; height: 14px; }
    .online-layout-copy>p.online-entry { font-size: 10px; }
    .share-journey { padding: 20px 17px; }
    .share-step b { font-size: 12px; }
    .share-step div>span { font-size: 9px; }
    .share-code { margin-block: 20px; padding-block: 22px; }
    .share-code-digits { gap: 5px; }
    .share-code-digits>span { height: 46px; font-size: 24px; }
    .share-code>span { font-size: 9px; }
    .steering-diagram { padding: 17px; }
    .steering-input { gap: 15px; padding: 17px 12px; }
    .steering-input b { font-size: 13px; }
    .steering-input div>span { font-size: 9px; }
    .voice-phrases>span { font-size: 10px; }
    .steering-connection { font-size: 9px; }
    .access-section { margin-top: 65px; }
    .access-heading h2 { font-size: 28px; }
    .access-heading>p:last-child { font-size: 12px; line-height: 1.9; }
    .access-grid { grid-template-columns: minmax(0,1fr); gap: 16px; }
    .access-card { padding: 25px; }
    .access-card h3 { font-size: 22px; }
    .access-card>p { font-size: 12px; }
}