:root {
    --ink: #10211f;
    --ink-soft: #30433f;
    --paper: #f7f8f4;
    --white: #ffffff;
    --line: #dce3de;
    --teal: #087f70;
    --teal-dark: #055c54;
    --mint: #d9eee7;
    --coral: #f06449;
    --yellow: #f1c75b;
    --max-width: 1200px;
    --header-height: 72px;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    margin: 0;
    color: var(--ink);
    background: var(--paper);
    font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: 0;
    line-height: 1.7;
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

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

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

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

button {
    font: inherit;
}

.skip-link {
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 999;
    padding: 8px 12px;
    background: var(--white);
    color: var(--ink);
    transform: translateY(-150%);
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    background: rgba(247, 248, 244, 0.94);
    border-bottom: 1px solid rgba(16, 33, 31, 0.1);
    backdrop-filter: blur(14px);
}

.nav-shell {
    width: min(calc(100% - 48px), var(--max-width));
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 36px;
}

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

.brand-mark {
    width: 42px;
    height: 42px;
    display: block;
    flex: 0 0 42px;
}

.brand-copy {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.brand-copy strong {
    font-size: 19px;
}

.brand-copy small {
    margin-top: 4px;
    color: #62706d;
    font-size: 9px;
    font-weight: 700;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 34px;
    margin-left: auto;
}

.site-nav a {
    position: relative;
    padding: 23px 0 20px;
    color: var(--ink-soft);
    font-size: 15px;
    font-weight: 600;
}

.site-nav a::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 15px;
    left: 0;
    height: 2px;
    background: var(--teal);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a[aria-current="page"]::after {
    transform: scaleX(1);
}

.site-nav a[aria-current="page"] {
    color: var(--ink);
}

.header-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 18px;
    border: 1px solid var(--ink);
    border-radius: 4px;
    font-size: 14px;
    font-weight: 700;
    transition: background 180ms ease, color 180ms ease;
}

.header-action:hover,
.header-action:focus-visible {
    background: var(--ink);
    color: var(--white);
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    padding: 10px;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    margin: 5px 0;
    background: var(--ink);
    transition: transform 180ms ease, opacity 180ms ease;
}

.hero {
    position: relative;
    height: clamp(560px, calc(100svh - 120px), 720px);
    min-height: 560px;
    overflow: hidden;
    background: #dce7e5;
}

.hero-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(6, 23, 22, 0.53);
}

.hero-inner {
    position: relative;
    z-index: 1;
    width: min(calc(100% - 48px), var(--max-width));
    height: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    color: var(--white);
}

.eyebrow,
.section-kicker {
    margin: 0 0 14px;
    color: var(--teal);
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
}

.hero .eyebrow {
    color: #a7e7d8;
}

.hero h2 {
    margin: 0;
    font-size: clamp(54px, 7vw, 92px);
    line-height: 1.03;
    font-weight: 800;
}

.hero-lead {
    max-width: 820px;
    margin: 25px 0 0;
    font-size: clamp(22px, 3vw, 36px);
    line-height: 1.35;
    font-weight: 700;
}

.hero-note {
    max-width: 680px;
    margin: 20px 0 0;
    color: rgba(255, 255, 255, 0.8);
    font-size: 16px;
}

.hero-actions {
    display: flex;
    gap: 12px;
    margin-top: 34px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 24px;
    border: 1px solid transparent;
    border-radius: 4px;
    font-size: 15px;
    font-weight: 750;
    transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
    transform: translateY(-2px);
}

.button-primary {
    background: var(--coral);
    color: var(--white);
}

.button-primary:hover,
.button-primary:focus-visible {
    background: #d94d35;
}

.button-ghost {
    border-color: rgba(255, 255, 255, 0.65);
    color: var(--white);
}

.button-ghost:hover,
.button-ghost:focus-visible {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--white);
}

.hero-scroll {
    position: absolute;
    z-index: 2;
    right: max(24px, calc((100vw - var(--max-width)) / 2));
    bottom: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 12px;
    font-weight: 700;
}

.scroll-arrow {
    display: grid;
    width: 34px;
    height: 34px;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.46);
    border-radius: 50%;
}

.overview {
    background: var(--ink);
    color: var(--white);
}

.overview-inner {
    width: min(calc(100% - 48px), var(--max-width));
    min-height: 154px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(260px, 1fr) minmax(520px, 1.6fr);
    align-items: center;
    gap: 54px;
}

.overview-intro {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-right: 28px;
    border-right: 1px solid rgba(255, 255, 255, 0.18);
}

.overview-intro span {
    color: rgba(255, 255, 255, 0.58);
    font-size: 13px;
}

.overview-intro strong {
    font-size: 20px;
}

.overview-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin: 0;
}

.overview-list div {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-left: 34px;
    border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.overview-list div:first-child {
    border-left: 0;
}

.overview-list dt {
    font-size: 24px;
    font-weight: 800;
}

.overview-list dd {
    margin: 0;
    color: rgba(255, 255, 255, 0.58);
    font-size: 13px;
}

.section {
    padding: 110px 0;
}

.section-inner {
    width: min(calc(100% - 48px), var(--max-width));
    margin: 0 auto;
}

.section-heading {
    max-width: 900px;
    margin-bottom: 52px;
}

.section-heading h2,
.solutions-copy h2,
.about-copy h2,
.contact-copy h2 {
    margin: 0;
    font-size: clamp(34px, 4vw, 52px);
    line-height: 1.2;
}

.section-heading > p:last-child,
.solutions-copy > p:last-of-type {
    max-width: 660px;
    margin: 18px 0 0;
    color: #5c6c68;
}

.product-showcase {
    padding: 34px 0 112px;
    background: #f0f2f4;
}

.product-showcase-heading {
    max-width: 760px;
    margin-bottom: 30px;
}

.product-showcase-heading h1 {
    margin: 0;
    font-size: clamp(30px, 3vw, 42px);
    line-height: 1.2;
}

.product-showcase-heading > p:last-child {
    margin-top: 12px;
}

.product-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
}

.product-item {
    --product-accent: #5ce1c1;
    min-width: 0;
    overflow: hidden;
    color: var(--white);
    background: #092827;
    border: 1px solid rgba(16, 33, 31, 0.08);
    border-radius: 8px;
    box-shadow: 0 22px 54px rgba(27, 40, 68, 0.18);
    transition: box-shadow 220ms ease, transform 220ms ease;
}

.product-ai-note {
    --product-accent: #7cb6ff;
    background: #1f2a3a;
}

.product-parent {
    --product-accent: #ff9b76;
    background: #352b2c;
}

.product-item:hover {
    box-shadow: 0 28px 64px rgba(27, 40, 68, 0.24);
    transform: translateY(-3px);
}

.product-card {
    display: grid;
    min-height: 450px;
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
}

.product-content {
    position: relative;
    z-index: 3;
    display: flex;
    min-width: 0;
    flex-direction: column;
    padding: 42px 24px 36px 50px;
}

.product-brand {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 10px;
}

.product-brand img {
    width: 26px;
    height: 26px;
    flex: 0 0 26px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
}

.product-brand h2 {
    margin: 0;
    color: var(--white);
    font-size: 15px;
    line-height: 1.3;
}

.product-brand > span {
    margin-left: 2px;
    padding-left: 12px;
    color: rgba(255, 255, 255, 0.55);
    border-left: 1px solid rgba(255, 255, 255, 0.24);
    font-size: 11px;
    font-weight: 700;
}

.product-headline {
    margin: 34px 0 0;
    color: var(--white);
    font-size: clamp(32px, 3vw, 46px);
    font-weight: 850;
    line-height: 1.14;
}

.product-headline span {
    display: block;
    color: var(--product-accent);
}

.product-description {
    max-width: 460px;
    margin: 18px 0 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.8;
}

.product-content ul {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    margin: 19px 0 0;
    padding: 0;
    color: rgba(255, 255, 255, 0.82);
    list-style: none;
}

.product-content li {
    position: relative;
    padding-left: 12px;
    font-size: 12px;
    font-weight: 650;
    line-height: 1.5;
}

.product-content li::before {
    content: "";
    position: absolute;
    top: 0.62em;
    left: 0;
    width: 4px;
    height: 4px;
    background: var(--product-accent);
}

.product-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: auto;
    padding-top: 24px;
}

.product-action {
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 16px;
    color: var(--white);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.38);
    border-radius: 4px;
    font-size: 13px;
    font-weight: 750;
    line-height: 1.2;
    transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.product-action:hover {
    color: var(--ink);
    background: var(--white);
    border-color: var(--white);
    transform: translateY(-2px);
}

.product-action-primary {
    color: var(--ink);
    background: var(--product-accent);
    border-color: var(--product-accent);
}

.product-action-primary:hover {
    background: var(--white);
    border-color: var(--white);
}

.product-action:focus-visible {
    outline: 3px solid var(--coral);
    outline-offset: 3px;
}

.product-feature-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin: 0 46px 44px;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.product-feature {
    min-width: 0;
    min-height: 188px;
    padding: 27px 26px 28px;
}

.product-feature + .product-feature {
    border-left: 1px solid rgba(255, 255, 255, 0.16);
}

.product-feature-number {
    display: block;
    color: var(--product-accent);
    font-size: 11px;
    font-weight: 850;
}

.product-feature h3 {
    margin: 12px 0 0;
    color: var(--product-accent);
    font-size: 19px;
    line-height: 1.4;
}

.product-feature p {
    margin: 12px 0 0;
    color: rgba(255, 255, 255, 0.66);
    font-size: 13px;
    line-height: 1.75;
}
.product-media {
    position: relative;
    isolation: isolate;
    min-width: 0;
    min-height: 450px;
    overflow: hidden;
}

.product-media-screen::before,
.product-media-screen::after {
    content: "";
    position: absolute;
    z-index: 0;
    border: 1px solid rgba(255, 255, 255, 0.14);
}

.product-media-screen::before {
    top: 30px;
    left: 36px;
    width: 112px;
    height: 112px;
}

.product-media-screen::after {
    right: 28px;
    bottom: 28px;
    width: 86px;
    height: 86px;
    border-color: color-mix(in srgb, var(--product-accent) 52%, transparent);
}

.product-window {
    position: absolute;
    top: 74px;
    right: 42px;
    bottom: 56px;
    left: 0;
    z-index: 2;
    overflow: hidden;
    background: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.32);
    border-radius: 8px;
    box-shadow: 0 24px 52px rgba(4, 12, 24, 0.42);
    transition: box-shadow 350ms ease, transform 350ms ease;
}

.product-window-bar {
    position: relative;
    z-index: 2;
    height: 22px;
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 0 9px;
    background: #f8faf8;
    border-bottom: 1px solid rgba(16, 33, 31, 0.08);
}

.product-window-bar i {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #b9c5c0;
}

.product-window-bar b {
    width: 34%;
    height: 5px;
    margin-left: 7px;
    border-radius: 2px;
    background: #e0e6e3;
}

.product-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-window img {
    position: absolute;
    top: 22px;
    right: 0;
    bottom: 0;
    left: 0;
    height: calc(100% - 22px);
    object-position: left top;
}

.product-item:hover .product-window {
    box-shadow: 0 30px 58px rgba(4, 12, 24, 0.5);
    transform: translateY(-5px);
}

.product-media-guardian::after {
    content: "";
    position: absolute;
    inset: 38px 38px 38px 0;
    z-index: 1;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 8px;
    background: rgba(5, 92, 84, 0.24);
}

.guardian-photo {
    position: absolute;
    top: 38px;
    right: 38px;
    bottom: 38px;
    left: 0;
    width: calc(100% - 38px);
    height: calc(100% - 76px);
    border-radius: 8px;
    object-position: center;
    filter: saturate(0.76) contrast(0.94);
    transition: transform 400ms ease;
}

.guardian-device {
    position: absolute;
    z-index: 2;
    right: 66px;
    bottom: 28px;
    width: 124px;
    height: 202px;
    padding: 26px 12px 14px;
    border: 5px solid rgba(255, 255, 255, 0.94);
    border-radius: 18px 18px 0 0;
    background: #f7f8f4;
    box-shadow: 0 16px 34px rgba(9, 20, 18, 0.34);
    transform: rotate(-2deg);
    transition: transform 350ms ease;
}

.guardian-speaker {
    position: absolute;
    top: 11px;
    left: 50%;
    width: 30px;
    height: 4px;
    border-radius: 2px;
    background: #c7d0cc;
    transform: translateX(-50%);
}

.guardian-ring {
    width: 64px;
    height: 64px;
    display: grid;
    place-items: center;
    margin: 0 auto 14px;
    border-radius: 50%;
    background: conic-gradient(var(--coral) 0 28%, var(--teal) 28% 76%, #dce3de 76% 100%);
}

.guardian-ring i {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: #f7f8f4;
}

.guardian-row {
    display: grid;
    grid-template-columns: 10px 1fr;
    align-items: center;
    gap: 7px;
    height: 21px;
    border-top: 1px solid #e3e8e5;
}

.guardian-row i {
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: var(--teal);
}

.guardian-row b {
    height: 4px;
    border-radius: 2px;
    background: #ccd6d1;
}

.guardian-row:nth-child(4) i {
    background: var(--yellow);
}

.guardian-row:nth-child(5) i {
    background: var(--coral);
}

.product-parent:hover .guardian-photo {
    transform: scale(1.035);
}

.product-parent:hover .guardian-device {
    transform: translateY(-5px) rotate(-2deg);
}
.solutions {
    padding: 110px 0;
    background: var(--mint);
}

.solutions-inner {
    display: grid;
    grid-template-columns: minmax(0, 0.92fr) minmax(480px, 1.08fr);
    gap: 82px;
    align-items: center;
}

.solution-tabs {
    display: inline-grid;
    grid-template-columns: repeat(4, 1fr);
    margin-top: 34px;
    padding: 4px;
    border: 1px solid rgba(16, 33, 31, 0.16);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.45);
}

.solution-tab {
    min-width: 76px;
    min-height: 42px;
    padding: 0 15px;
    border: 0;
    border-radius: 4px;
    color: var(--ink-soft);
    background: transparent;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
}

.solution-tab.is-active {
    color: var(--white);
    background: var(--ink);
}

.solution-panel {
    position: relative;
    min-height: 430px;
    padding: 60px 64px;
    overflow: hidden;
    background: var(--ink);
    color: var(--white);
    border-radius: 6px;
}

.solution-number {
    position: absolute;
    right: 24px;
    top: -42px;
    color: rgba(255, 255, 255, 0.06);
    font-size: 180px;
    line-height: 1;
    font-weight: 900;
}

.solution-label {
    position: relative;
    margin: 0 0 20px;
    color: var(--yellow);
    font-size: 12px;
    font-weight: 800;
}

.solution-panel h3 {
    position: relative;
    margin: 0;
    font-size: 34px;
}

.solution-description {
    position: relative;
    max-width: 500px;
    margin: 16px 0 0;
    color: rgba(255, 255, 255, 0.72);
}

.solution-points {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 34px 0 0;
    padding: 0;
    list-style: none;
}

.solution-points li {
    min-height: 70px;
    padding-top: 12px;
    border-top: 2px solid var(--teal);
    color: rgba(255, 255, 255, 0.86);
    font-size: 13px;
}

.text-link {
    position: relative;
    display: inline-flex;
    gap: 10px;
    margin-top: 30px;
    color: var(--white);
    font-size: 14px;
    font-weight: 800;
}

.text-link span {
    color: var(--coral);
}

.about-grid {
    display: grid;
    grid-template-columns: minmax(400px, 1fr) minmax(0, 1fr);
    gap: 82px;
    align-items: center;
}

.about-image-wrap {
    position: relative;
    min-width: 0;
}

.about-image-wrap > img {
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: cover;
    border-radius: 6px;
}

.about-caption {
    position: absolute;
    right: -26px;
    bottom: 34px;
    width: min(300px, 80%);
    padding: 24px 26px;
    background: var(--coral);
    color: var(--white);
    border-radius: 4px;
}

.about-caption strong,
.about-caption span {
    display: block;
}

.about-caption strong {
    font-size: 19px;
}

.about-caption span {
    margin-top: 4px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 13px;
}

.about-lead {
    margin: 24px 0 0;
    color: var(--ink);
    font-size: 19px;
    font-weight: 650;
}

.about-copy > p:not(.section-kicker):not(.about-lead) {
    color: #5d6d69;
}

.about-values {
    margin-top: 32px;
    border-top: 1px solid var(--line);
}

.about-values > div {
    display: grid;
    grid-template-columns: 38px 74px 1fr;
    gap: 12px;
    align-items: center;
    padding: 17px 0;
    border-bottom: 1px solid var(--line);
}

.about-values span {
    color: var(--teal);
    font-size: 12px;
    font-weight: 800;
}

.about-values strong {
    font-size: 16px;
}

.about-values p {
    margin: 0;
    color: #65736f;
    font-size: 14px;
}

.contact {
    position: relative;
    overflow: hidden;
    background: var(--ink);
    color: var(--white);
}

.contact-photo {
    position: absolute;
    inset: 0 0 0 50%;
    background: rgba(7, 31, 28, 0.78) url("images/hero.jpg") center / cover no-repeat;
    background-blend-mode: multiply;
    opacity: 0.35;
}

.contact-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 0.88fr;
    gap: 110px;
    padding-top: 100px;
    padding-bottom: 100px;
}

.contact .section-kicker {
    color: var(--yellow);
}

.contact-copy p:not(.section-kicker) {
    max-width: 590px;
    margin: 20px 0 0;
    color: rgba(255, 255, 255, 0.68);
}

.button-accent {
    margin-top: 30px;
    background: var(--coral);
    color: var(--white);
}

.button-accent:hover,
.button-accent:focus-visible {
    background: #d94d35;
}

.contact-details {
    display: grid;
    align-content: center;
    gap: 28px;
    font-style: normal;
}

.contact-details div {
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.contact-details span {
    display: block;
    margin-bottom: 6px;
    color: rgba(255, 255, 255, 0.48);
    font-size: 12px;
    font-weight: 800;
}

.contact-details a,
.contact-details p {
    margin: 0;
    color: var(--white);
    font-size: 17px;
    font-weight: 650;
}

.contact-details a:hover,
.contact-details a:focus-visible {
    color: var(--yellow);
}

.site-footer {
    background: #091412;
    color: rgba(255, 255, 255, 0.55);
}

.footer-inner {
    width: min(calc(100% - 48px), var(--max-width));
    min-height: 128px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    font-size: 12px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--white);
}

.footer-brand div {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.footer-brand strong {
    font-size: 16px;
}

.footer-brand span {
    color: rgba(255, 255, 255, 0.48);
    font-size: 11px;
}

/* Contact page */
.contact-page {
    background: #f2f6f4;
}

.contact-hero {
    position: relative;
    min-height: 248px;
    overflow: hidden;
    background: #e9f1ee;
    border-bottom: 1px solid #d9e5e0;
}

.contact-hero::before,
.contact-hero::after {
    content: "";
    position: absolute;
    border: 1px solid rgba(8, 127, 112, 0.16);
    transform: rotate(16deg);
}

.contact-hero::before {
    top: 54px;
    right: 9%;
    width: 116px;
    height: 76px;
}

.contact-hero::after {
    bottom: -28px;
    left: 7%;
    width: 170px;
    height: 88px;
}

.contact-hero-inner {
    position: relative;
    z-index: 1;
    width: min(calc(100% - 48px), var(--max-width));
    margin: 0 auto;
    padding: 52px 0 80px;
    text-align: center;
}

.contact-hero-inner .section-kicker {
    margin-bottom: 7px;
}

.contact-hero h1 {
    margin: 0;
    font-size: 52px;
    line-height: 1.2;
}

.contact-hero-inner > p:not(.section-kicker) {
    margin: 10px 0 0;
    color: #526460;
    font-size: 17px;
}

.contact-title-rule {
    display: block;
    width: 46px;
    height: 3px;
    margin: 22px auto 0;
    background: var(--coral);
}

.contact-page-main {
    position: relative;
    z-index: 2;
    padding: 0 24px 90px;
}

.contact-workspace {
    width: min(100%, 1120px);
    margin: -38px auto 0;
    display: grid;
    grid-template-columns: minmax(0, 1.28fr) minmax(320px, 0.72fr);
    overflow: hidden;
    background: var(--white);
    border: 1px solid #dfe8e4;
    border-radius: 8px;
    box-shadow: 0 20px 55px rgba(28, 56, 50, 0.1);
}

.contact-form-panel {
    padding: 44px 54px 46px;
}

.contact-panel-heading {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 32px;
}

.contact-heading-icon {
    display: grid;
    width: 38px;
    height: 38px;
    flex: 0 0 38px;
    place-items: center;
    color: var(--teal);
    background: var(--mint);
    border-radius: 6px;
    font-size: 20px;
    font-weight: 800;
}

.contact-panel-heading h2,
.contact-support-copy h2 {
    margin: 0;
    font-size: 23px;
    line-height: 1.35;
}

.contact-panel-heading p,
.contact-support-copy p {
    margin: 5px 0 0;
    color: #64736f;
    font-size: 14px;
}

.contact-form {
    display: grid;
    gap: 20px;
}

.contact-field label {
    display: block;
    margin-bottom: 7px;
    color: #21332f;
    font-size: 14px;
    font-weight: 700;
}

.contact-field label span {
    color: var(--coral);
}

.contact-field input,
.contact-field select,
.contact-field textarea {
    width: 100%;
    color: var(--ink);
    background: #fbfcfb;
    border: 1px solid #d6e0dc;
    border-radius: 5px;
    font: inherit;
    font-size: 14px;
    outline: none;
    transition: background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.contact-field input,
.contact-field select {
    height: 48px;
    padding: 0 14px;
}

.contact-field textarea {
    min-height: 126px;
    padding: 12px 14px;
    resize: vertical;
}

.contact-field input:focus,
.contact-field select:focus,
.contact-field textarea:focus {
    background: var(--white);
    border-color: var(--teal);
    box-shadow: 0 0 0 3px rgba(8, 127, 112, 0.11);
}

.contact-field [aria-invalid="true"] {
    border-color: var(--coral);
}

.contact-select-wrap {
    position: relative;
}

.contact-select-wrap::after {
    content: "⌄";
    position: absolute;
    top: 50%;
    right: 15px;
    color: #687b76;
    pointer-events: none;
    transform: translateY(-58%);
}

.contact-field select {
    appearance: none;
    padding-right: 42px;
}

.contact-field-error {
    min-height: 18px;
    margin: 3px 0 0;
    color: #c54632;
    font-size: 12px;
    line-height: 1.5;
}

.contact-submit {
    display: flex;
    width: 100%;
    min-height: 50px;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 8px;
    color: var(--white);
    background: var(--teal);
    border: 0;
    border-radius: 5px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 800;
    transition: background 160ms ease, transform 160ms ease;
}

.contact-submit:hover,
.contact-submit:focus-visible {
    background: var(--teal-dark);
    transform: translateY(-1px);
}

.contact-submit:disabled {
    cursor: wait;
    opacity: 0.64;
    transform: none;
}

.contact-submit-arrow {
    font-size: 17px;
}

.contact-privacy,
.contact-form-status {
    margin: 0;
    text-align: center;
    color: #7a8985;
    font-size: 12px;
}

.contact-form-status {
    min-height: 20px;
    font-weight: 700;
}

.contact-form-status.is-success {
    color: var(--teal-dark);
}

.contact-form-status.is-error {
    color: #c54632;
}

.contact-support-panel {
    display: flex;
    min-width: 0;
    flex-direction: column;
    padding: 32px;
    background: #eef4f1;
    border-left: 1px solid #dfe8e4;
}

.contact-visual {
    position: relative;
    height: 214px;
    overflow: hidden;
    background: #dcebe6;
    border: 1px solid #cfdfd9;
    border-radius: 6px;
}

.contact-visual::before {
    content: "";
    position: absolute;
    top: 30px;
    right: 34px;
    width: 62px;
    height: 42px;
    border-top: 2px solid rgba(8, 127, 112, 0.25);
    border-right: 2px solid rgba(8, 127, 112, 0.25);
    transform: skew(-22deg) rotate(-10deg);
}

.contact-visual-line {
    position: absolute;
    height: 1px;
    background: rgba(8, 127, 112, 0.25);
    transform-origin: left;
}

.contact-visual-line-one {
    top: 54px;
    left: 18px;
    width: 92px;
    transform: rotate(16deg);
}

.contact-visual-line-two {
    right: 8px;
    bottom: 38px;
    width: 84px;
    transform: rotate(-18deg);
}

.contact-envelope {
    position: absolute;
    top: 65px;
    left: 50%;
    width: 144px;
    height: 96px;
    background: var(--teal);
    border: 1px solid #087164;
    border-radius: 5px;
    box-shadow: 0 18px 28px rgba(5, 92, 84, 0.18);
    transform: translateX(-50%);
}

.contact-envelope::before,
.contact-envelope::after {
    content: "";
    position: absolute;
    top: 0;
    width: 0;
    height: 0;
    border-top: 48px solid #169587;
    border-bottom: 48px solid transparent;
}

.contact-envelope::before {
    left: 0;
    border-right: 72px solid transparent;
}

.contact-envelope::after {
    right: 0;
    border-left: 72px solid transparent;
}

.contact-envelope img {
    position: absolute;
    z-index: 2;
    top: -24px;
    left: 51px;
    width: 42px;
    height: 42px;
    border: 4px solid #eef4f1;
    border-radius: 8px;
}

.contact-envelope span {
    position: absolute;
    z-index: 1;
    right: 19px;
    bottom: 15px;
    left: 19px;
    height: 6px;
    background: rgba(255, 255, 255, 0.35);
}

.contact-message {
    position: absolute;
    display: grid;
    place-items: center;
    color: var(--white);
    background: var(--coral);
    border: 3px solid #dcebe6;
    border-radius: 50%;
    font-size: 13px;
    font-weight: 850;
}

.contact-message-one {
    top: 42px;
    left: 32px;
    width: 46px;
    height: 46px;
    padding-bottom: 7px;
}

.contact-message-two {
    right: 28px;
    bottom: 26px;
    width: 38px;
    height: 38px;
    background: var(--yellow);
    color: var(--ink);
}

.contact-support-copy {
    padding: 26px 0 21px;
}

.contact-support-copy p {
    line-height: 1.75;
}

.contact-support-list {
    border-top: 1px solid #cfddd7;
}

.contact-support-list > div {
    display: grid;
    grid-template-columns: 36px 1fr;
    gap: 12px;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px solid #cfddd7;
}

.support-index {
    color: var(--coral);
    font-size: 12px;
    font-weight: 850;
}

.contact-support-list p {
    display: flex;
    flex-direction: column;
    margin: 0;
    line-height: 1.5;
}

.contact-support-list strong {
    font-size: 14px;
}

.contact-support-list small {
    color: #71817d;
    font-size: 12px;
}

.contact-email {
    margin-top: auto;
    padding-top: 22px;
    color: var(--teal-dark);
    font-size: 14px;
    font-weight: 750;
}

.contact-email:hover,
.contact-email:focus-visible {
    color: var(--coral);
}

@media (max-width: 980px) {
    .site-nav {
        gap: 22px;
    }

    .header-action {
        display: none;
    }

    .product-card {
        min-height: 420px;
        grid-template-columns: minmax(0, 0.96fr) minmax(0, 1.04fr);
    }

    .product-content {
        padding: 36px 22px 32px 38px;
    }

    .product-headline {
        margin-top: 28px;
        font-size: 34px;
    }

    .product-description {
        font-size: 13px;
    }

    .product-media {
        min-height: 420px;
    }

    .product-feature-strip {
        margin: 0 34px 38px;
    }

    .product-feature {
        min-height: 180px;
        padding: 24px 18px 25px;
    }

    .product-feature h3 {
        font-size: 17px;
    }

    .product-actions {
        gap: 8px;
    }

    .product-action {
        padding: 0 12px;
    }

    .product-window {
        top: 84px;
        right: 28px;
        bottom: 68px;
    }

    .product-media-guardian::after,
    .guardian-photo {
        right: 28px;
    }

    .guardian-device {
        right: 50px;
    }
    .overview-inner {
        grid-template-columns: 1fr;
        gap: 22px;
        padding: 28px 0;
    }

    .overview-intro {
        border-right: 0;
    }

    .overview-list div:first-child {
        border-left: 1px solid rgba(255, 255, 255, 0.12);
    }

    .solutions-inner,
    .about-grid,
    .contact-inner {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .about-image-wrap {
        max-width: 680px;
    }

    .about-image-wrap > img {
        aspect-ratio: 16 / 10;
    }

    .contact-photo {
        inset: 50% 0 0;
    }

    .contact-workspace {
        grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
    }

    .contact-form-panel {
        padding: 40px 36px;
    }
}

@media (max-width: 760px) {
    :root {
        --header-height: 66px;
    }

    .nav-shell,
    .hero-inner,
    .overview-inner,
    .section-inner,
    .footer-inner {
        width: min(calc(100% - 32px), var(--max-width));
    }

    .menu-toggle {
        display: block;
        margin-left: auto;
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .site-nav {
        position: fixed;
        top: var(--header-height);
        right: 0;
        left: 0;
        display: grid;
        gap: 0;
        padding: 10px 16px 22px;
        background: var(--paper);
        border-bottom: 1px solid var(--line);
        box-shadow: 0 18px 38px rgba(16, 33, 31, 0.12);
        transform: translateY(-130%);
        opacity: 0;
        visibility: hidden;
        transition: transform 220ms ease, opacity 220ms ease, visibility 220ms ease;
    }

    .site-nav.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .site-nav a {
        padding: 14px 8px;
        border-bottom: 1px solid var(--line);
    }

    .site-nav a::after {
        display: none;
    }

    .hero {
        height: clamp(560px, calc(100svh - 96px), 680px);
        min-height: 560px;
    }

    .hero-image {
        object-position: 64% center;
    }

    .hero-overlay {
        background: rgba(6, 23, 22, 0.67);
    }

    .hero h2 {
        font-size: clamp(48px, 16vw, 68px);
    }

    .hero-lead {
        font-size: 25px;
    }

    .hero-note {
        font-size: 14px;
    }

    .hero-scroll {
        right: 16px;
        bottom: 20px;
    }

    .hero-scroll span:first-child {
        display: none;
    }

    .overview-list {
        grid-template-columns: 1fr;
    }

    .overview-list div,
    .overview-list div:first-child {
        display: grid;
        grid-template-columns: 110px 1fr;
        align-items: baseline;
        padding: 12px 0;
        border-top: 1px solid rgba(255, 255, 255, 0.12);
        border-left: 0;
    }

    .overview-list dt {
        font-size: 20px;
    }

    .section,
    .solutions {
        padding: 78px 0;
    }

    .section-heading {
        margin-bottom: 34px;
    }

    .section-heading h2,
    .solutions-copy h2,
    .about-copy h2,
    .contact-copy h2 {
        font-size: 34px;
    }

    .product-showcase {
        padding: 24px 0 68px;
    }

    .product-showcase-heading {
        margin-bottom: 22px;
    }

    .product-showcase-heading h1 {
        font-size: 30px;
    }

    .product-grid {
        gap: 18px;
    }

    .product-card {
        min-height: 0;
        grid-template-columns: 1fr;
    }

    .product-content {
        min-height: 0;
        padding: 30px 22px;
    }

    .product-brand > span {
        display: none;
    }

    .product-headline {
        margin-top: 30px;
        font-size: 34px;
    }

    .product-description {
        font-size: 14px;
    }

    .product-actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        margin-top: 0;
        padding-top: 28px;
    }

    .product-action {
        width: 100%;
        padding: 0 10px;
    }

    .product-media {
        min-height: 0;
        aspect-ratio: 16 / 10;
    }

    .product-window {
        top: 30px;
        right: 18px;
        bottom: 24px;
        left: 18px;
    }

    .product-media-screen::before {
        top: 16px;
        left: 12px;
        width: 72px;
        height: 72px;
    }

    .product-media-screen::after {
        right: 10px;
        bottom: 14px;
        width: 56px;
        height: 56px;
    }

    .product-media-guardian::after,
    .guardian-photo {
        top: 18px;
        right: 18px;
        bottom: 18px;
        left: 18px;
        width: calc(100% - 36px);
        height: calc(100% - 36px);
    }

    .guardian-device {
        right: 36px;
        bottom: 4px;
    }

    .product-feature-strip {
        grid-template-columns: 1fr;
        margin: 0 22px 26px;
    }

    .product-feature {
        min-height: 0;
        padding: 22px 0;
    }

    .product-feature + .product-feature {
        border-top: 1px solid rgba(255, 255, 255, 0.16);
        border-left: 0;
    }

    .product-feature h3 {
        font-size: 18px;
    }

    .product-feature p {
        font-size: 13px;
    }
    .solutions-inner {
        gap: 34px;
    }

    .solution-tabs {
        display: grid;
        width: 100%;
    }

    .solution-tab {
        min-width: 0;
        padding: 0 8px;
    }

    .solution-panel {
        min-height: 450px;
        padding: 42px 28px;
    }

    .solution-number {
        top: -18px;
        font-size: 120px;
    }

    .solution-points {
        grid-template-columns: 1fr;
    }

    .solution-points li {
        min-height: auto;
    }

    .about-grid {
        gap: 54px;
    }

    .about-image-wrap > img {
        aspect-ratio: 4 / 5;
    }

    .about-caption {
        right: -8px;
        bottom: -26px;
    }

    .about-values > div {
        grid-template-columns: 36px 62px 1fr;
    }

    .contact-inner {
        gap: 56px;
        padding-top: 78px;
        padding-bottom: 78px;
    }

    .contact-photo {
        inset: 45% 0 0;
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        gap: 8px;
        padding: 28px 0;
    }

    .footer-inner p {
        margin: 0;
    }

    .contact-hero {
        min-height: 220px;
    }

    .contact-hero-inner {
        width: min(calc(100% - 32px), var(--max-width));
        padding: 42px 0 68px;
    }

    .contact-hero h1 {
        font-size: 40px;
    }

    .contact-hero-inner > p:not(.section-kicker) {
        font-size: 15px;
    }

    .contact-page-main {
        padding: 0 16px 58px;
    }

    .contact-workspace {
        grid-template-columns: 1fr;
        margin-top: -30px;
    }

    .contact-form-panel {
        padding: 30px 22px 34px;
    }

    .contact-support-panel {
        padding: 22px;
        border-top: 1px solid #dfe8e4;
        border-left: 0;
    }

    .contact-visual {
        height: 210px;
    }

    .contact-email {
        margin-top: 0;
    }
}

@media (max-width: 420px) {
    .guardian-device {
        right: 18px;
        bottom: -18px;
        width: 108px;
        height: 170px;
        padding: 22px 10px 10px;
        border-width: 4px;
        border-radius: 14px 14px 0 0;
    }

    .guardian-speaker {
        top: 9px;
        width: 26px;
    }

    .guardian-ring {
        width: 52px;
        height: 52px;
        margin-bottom: 10px;
    }

    .guardian-ring i {
        width: 34px;
        height: 34px;
    }

    .guardian-row {
        height: 18px;
    }

    .hero-actions {
        width: 100%;
        flex-direction: column;
    }

    .hero-actions .button {
        width: 100%;
    }

    .about-values > div {
        grid-template-columns: 34px 1fr;
    }

    .about-values p {
        grid-column: 2;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *, *::before, *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}

/* 公共导航产品菜单 */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 23px 0 20px;
    border: 0;
    background: transparent;
    color: var(--ink-soft);
    font-size: 15px;
    font-weight: 600;
    line-height: inherit;
    cursor: pointer;
}

.nav-dropdown-toggle::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 15px;
    left: 0;
    height: 2px;
    background: var(--teal);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 180ms ease;
}

.nav-dropdown-toggle:hover::after,
.nav-dropdown-toggle:focus-visible::after,
.nav-dropdown.is-open .nav-dropdown-toggle::after {
    transform: scaleX(1);
}

.dropdown-arrow {
    width: 7px;
    height: 7px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: translateY(-2px) rotate(45deg);
    transition: transform 180ms ease;
}

.nav-dropdown.is-open .dropdown-arrow {
    transform: translateY(2px) rotate(225deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% - 10px);
    left: 50%;
    width: 190px;
    padding: 8px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 6px;
    box-shadow: 0 16px 34px rgba(16, 33, 31, 0.14);
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, -8px);
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
}

.nav-dropdown.is-open .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}

.nav-dropdown-menu a {
    display: block;
    padding: 10px 12px;
    border: 0;
    border-radius: 4px;
    color: var(--ink-soft);
    font-size: 14px;
    font-weight: 600;
}

.nav-dropdown-menu a::after {
    display: none;
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a:focus-visible {
    color: var(--teal-dark);
    background: var(--mint);
    outline: none;
}

@media (max-width: 760px) {
    .nav-dropdown-toggle {
        width: 100%;
        justify-content: space-between;
        padding: 14px 8px;
        border-bottom: 1px solid var(--line);
        text-align: left;
    }

    .nav-dropdown-toggle::after {
        display: none;
    }

    .nav-dropdown-menu {
        position: static;
        width: 100%;
        max-height: 0;
        padding: 0 8px;
        overflow: hidden;
        border: 0;
        border-radius: 0;
        box-shadow: none;
        background: #eef2ee;
        opacity: 1;
        transform: none;
        transition: max-height 220ms ease, padding 220ms ease;
    }

    .nav-dropdown.is-open .nav-dropdown-menu {
        max-height: 180px;
        padding-top: 6px;
        padding-bottom: 6px;
        visibility: visible;
        transform: none;
    }

    .nav-dropdown-menu a {
        padding: 9px 12px;
        border-bottom: 0;
    }
}