:root {
    --ink-900: #071525;
    --ink-700: #15314d;
    --ink-500: #2d5073;
    --ink-300: #7a9bb8;
    --surface-0: #f3f7fb;
    --surface-1: #ffffff;
    --surface-2: #e8eff7;
    --brand-500: #0f6db3;
    --brand-400: #1e8ad9;
    --brand-300: #49b1ef;
    --teal-400: #14b8a6;
    --amber-400: #f59e0b;
    --shadow-soft: 0 24px 60px rgba(8, 29, 54, 0.12);
    --shadow-card: 0 14px 34px rgba(9, 31, 58, 0.09);
    --radius-lg: 20px;
    --radius-md: 14px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--ink-900);
    background:
        radial-gradient(950px 620px at 7% -12%, rgba(30, 138, 217, 0.24), transparent 70%),
        radial-gradient(780px 500px at 96% 2%, rgba(20, 184, 166, 0.16), transparent 65%),
        linear-gradient(180deg, #eaf5ff 0%, #f6f9fe 32%, #eef5ff 100%);
    line-height: 1.7;
    isolation: isolate;
}

body::before,
body::after {
    content: "";
    position: fixed;
    inset: auto;
    pointer-events: none;
    z-index: -1;
    filter: blur(56px);
}

body::before {
    width: 36vw;
    height: 36vw;
    min-width: 260px;
    min-height: 260px;
    left: -8vw;
    top: 34vh;
    background: rgba(69, 137, 239, 0.22);
}

body::after {
    width: 32vw;
    height: 32vw;
    min-width: 220px;
    min-height: 220px;
    right: -10vw;
    bottom: 6vh;
    background: rgba(20, 184, 166, 0.2);
}

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

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

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    left: -1000px;
    top: 8px;
    background: #fff;
    color: #000;
    z-index: 9999;
    padding: 10px 14px;
    border-radius: 8px;
}

.skip-link:focus {
    left: 12px;
}

.container {
    width: min(1540px, calc(100% - 3.8rem));
    margin-inline: auto;
}

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 3px;
    z-index: 80;
    background: linear-gradient(90deg, var(--teal-400), var(--brand-400));
}

.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 70;
    display: flex;
    justify-content: center;
    transition:
        background-color 0.35s ease,
        backdrop-filter 0.35s ease,
        box-shadow 0.35s ease,
        transform 0.4s ease,
        opacity 0.35s ease;
}

.site-header.is-hidden {
    transform: translateY(-130%);
    opacity: 0;
    pointer-events: none;
}

.site-header.is-scrolled {
    background: rgba(231, 243, 255, 0.48);
    backdrop-filter: blur(16px);
    box-shadow: 0 12px 28px rgba(6, 19, 39, 0.12);
    border-bottom: 1px solid rgba(193, 220, 247, 0.32);
}

.nav-shell {
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 22px;
    transition:
        width 0.45s ease,
        min-height 0.35s ease,
        margin-top 0.35s ease,
        padding 0.35s ease,
        border-radius 0.35s ease,
        background-color 0.35s ease,
        border-color 0.35s ease,
        box-shadow 0.35s ease,
        backdrop-filter 0.35s ease,
        gap 0.35s ease;
}

.site-header.is-compact {
    background: transparent;
    backdrop-filter: none;
    box-shadow: none;
    border-bottom: 0;
}

.site-header.is-compact .nav-shell {
    width: fit-content;
    max-width: min(1320px, calc(100% - 1.4rem));
    min-height: 58px;
    margin-top: 8px;
    padding: 8px 18px;
    border-radius: 999px;
    background: rgba(231, 243, 255, 0.46);
    border: 1px solid rgba(255, 255, 255, 0.48);
    box-shadow: 0 14px 34px rgba(8, 26, 48, 0.16);
    backdrop-filter: blur(18px);
    justify-content: center;
    gap: 18px;
}

.site-header.is-compact .brand-text {
    color: rgba(8, 30, 52, 0.94);
    text-shadow: none;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.brand-mark {
    width: 36px;
    aspect-ratio: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.24);
    border: 1px solid rgba(255, 255, 255, 0.35);
    box-shadow: 0 8px 20px rgba(11, 102, 176, 0.24);
    overflow: hidden;
}

.brand-mark img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.brand-text {
    font-weight: 700;
    letter-spacing: 0.01em;
    color: #fff;
    text-shadow: 0 5px 16px rgba(2, 18, 38, 0.4);
}

.site-header.is-scrolled .brand-text {
    color: var(--ink-900);
    text-shadow: none;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.site-nav a {
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.site-header.is-scrolled .site-nav a {
    color: var(--ink-700);
}

.site-header.is-compact .site-nav a {
    color: rgba(10, 40, 67, 0.9);
}

.site-nav a:hover,
.site-nav a:focus-visible {
    background: rgba(255, 255, 255, 0.18);
    outline: none;
}

.site-header.is-scrolled .site-nav a:hover,
.site-header.is-scrolled .site-nav a:focus-visible {
    background: rgba(19, 78, 126, 0.1);
}

.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    padding: 9px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: #fff;
    margin: 6px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.site-header.is-scrolled .mobile-menu-toggle span {
    background: var(--ink-900);
}

.site-header.is-compact .mobile-menu-toggle span {
    background: var(--ink-900);
}

.hero {
    position: relative;
    min-height: 100svh;
    display: flex;
    align-items: center;
    isolation: isolate;
    color: #fff;
    padding-top: 88px;
}

.hero-media,
.hero-overlay,
.hero-grid {
    position: absolute;
    inset: 0;
}

.hero-media {
    overflow: hidden;
    background: #051628;
    transition: transform 0.35s ease;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.2);
    will-change: transform;
    animation: hero-scale 16s ease-out forwards;
}

.hero-overlay {
    background:
        linear-gradient(115deg, rgba(7, 20, 37, 0.82), rgba(15, 47, 74, 0.48) 50%, rgba(11, 61, 102, 0.68)),
        radial-gradient(650px 420px at 80% 12%, rgba(73, 177, 239, 0.3), transparent 70%);
}

.hero-grid {
    opacity: 0.22;
    background-image:
        linear-gradient(to right, rgba(255, 255, 255, 0.24) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.24) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: min(1160px, 100%);
}

.hero-main {
    display: grid;
}

.hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    padding: 7px 14px;
    border-radius: 999px;
    background: rgba(232, 245, 255, 0.22);
    border: 1px solid rgba(255, 255, 255, 0.35);
    font-size: 0.86rem;
    font-weight: 500;
}

.hero h1 {
    margin: 16px 0 18px;
    max-width: 860px;
    font-family: "Outfit", "Noto Sans SC", sans-serif;
    font-size: clamp(2.2rem, 5vw, 4.2rem);
    line-height: 1.12;
    letter-spacing: 0.01em;
}

.hero-lead {
    margin: 0;
    max-width: 920px;
    font-size: clamp(1.02rem, 2.2vw, 1.24rem);
    color: rgba(255, 255, 255, 0.9);
}

.hero-actions {
    margin-top: 30px;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 700;
    transition: transform 0.28s ease, box-shadow 0.28s ease, background-color 0.28s ease;
}

.btn:hover,
.btn:focus-visible {
    transform: translateY(-2px);
    outline: none;
}

.btn-primary {
    background: linear-gradient(145deg, var(--teal-400), var(--brand-400));
    color: #fff;
    box-shadow: 0 12px 24px rgba(18, 112, 176, 0.36);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
}

.hero-tags {
    margin: 30px 0 0;
    padding: 0;
    list-style: none;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.hero-tags li {
    border-radius: 999px;
    padding: 7px 14px;
    font-size: 0.85rem;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(2px);
}

.scroll-cue {
    position: absolute;
    left: 50%;
    bottom: 24px;
    transform: translateX(-50%);
    z-index: 3;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.88);
}

.scroll-cue i {
    width: 14px;
    height: 14px;
    border-right: 2px solid rgba(255, 255, 255, 0.85);
    border-bottom: 2px solid rgba(255, 255, 255, 0.85);
    transform: rotate(45deg);
    animation: bounce-down 1.2s infinite;
}

.section {
    padding: clamp(4.2rem, 8vw, 7rem) 0;
    position: relative;
}

.metric-section {
    margin-top: 0;
    padding-top: 24px;
    position: relative;
    z-index: 4;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.45s ease, transform 0.45s ease;
}

.metric-section.is-ready {
    opacity: 1;
    transform: translateY(0);
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.metric-card {
    background: linear-gradient(155deg, rgba(255, 255, 255, 0.94), rgba(238, 247, 255, 0.92));
    border: 1px solid rgba(19, 95, 151, 0.1);
    border-radius: var(--radius-lg);
    padding: 18px 20px;
    box-shadow: var(--shadow-card);
}

.about-section {
    background:
        linear-gradient(180deg, rgba(241, 248, 255, 0.9), rgba(236, 246, 255, 0.92));
}

.metric-label {
    margin: 0;
    font-size: 0.9rem;
    color: var(--ink-500);
}

.metric-value {
    margin: 6px 0 0;
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.metric-number {
    font-family: "Outfit", sans-serif;
    font-size: clamp(1.7rem, 2.9vw, 2.3rem);
    color: var(--ink-700);
    line-height: 1;
}

.metric-suffix {
    font-weight: 700;
    color: var(--ink-500);
}

.split-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.95fr);
    gap: 24px;
    align-items: start;
}

.panel {
    background: rgba(255, 255, 255, 0.86);
    border: 1px solid rgba(20, 79, 125, 0.11);
    backdrop-filter: blur(6px);
    border-radius: var(--radius-lg);
    padding: clamp(22px, 4vw, 34px);
    box-shadow: var(--shadow-card);
}

.section-tag {
    margin: 0;
    font-size: 0.77rem;
    text-transform: uppercase;
    letter-spacing: 0.13em;
    color: var(--brand-500);
    font-weight: 700;
}

.panel h2,
.panel h3,
.section-head h2 {
    margin: 12px 0 16px;
    line-height: 1.25;
    font-family: "Outfit", "Noto Sans SC", sans-serif;
}

.panel h2 {
    font-size: clamp(1.7rem, 4vw, 2.35rem);
}

.panel h3 {
    font-size: clamp(1.25rem, 3vw, 1.58rem);
}

.panel p {
    margin: 0 0 12px;
    color: var(--ink-700);
}

.check-list,
.fact-list {
    margin: 14px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 9px;
}

.check-list li,
.fact-list li {
    position: relative;
    padding-left: 20px;
    color: var(--ink-700);
}

.check-list li::before,
.fact-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: linear-gradient(140deg, var(--teal-400), var(--brand-400));
}

.geo-panel {
    background:
        linear-gradient(155deg, rgba(255, 255, 255, 0.94), rgba(233, 247, 255, 0.96));
}

.geo-note {
    margin-top: 14px;
    font-size: 0.9rem;
    color: var(--ink-500);
}

.innovation-section {
    background:
        radial-gradient(840px 380px at 10% 16%, rgba(72, 158, 235, 0.14), transparent 72%),
        linear-gradient(180deg, rgba(238, 247, 255, 0.9), rgba(234, 245, 255, 0.9));
}

.section-head {
    max-width: min(1260px, 100%);
    margin-bottom: 28px;
}

.section-head h2 {
    font-size: clamp(1.75rem, 4.1vw, 2.6rem);
}

.section-head p {
    margin: 0;
    color: var(--ink-500);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.feature-card {
    background: var(--surface-1);
    border-radius: var(--radius-md);
    border: 1px solid rgba(18, 78, 123, 0.1);
    padding: 20px;
    box-shadow: var(--shadow-card);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.feature-card h3 {
    margin: 0 0 9px;
    font-size: 1.13rem;
    color: var(--ink-900);
}

.feature-card p {
    margin: 0;
    color: var(--ink-700);
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 42px rgba(14, 57, 98, 0.16);
}

.scenario-grid {
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.scenario-card {
    border-radius: var(--radius-md);
    border: 1px solid rgba(22, 94, 145, 0.14);
    background: #f8fcff;
    padding: 20px;
}

.scenario-card h3 {
    margin: 0;
    font-size: 1.05rem;
}

.scenario-card p {
    margin: 8px 0 0;
    color: var(--ink-700);
    font-size: 0.95rem;
}

.product-section {
    background:
        radial-gradient(920px 340px at 52% -8%, rgba(63, 146, 228, 0.18), transparent 76%),
        radial-gradient(780px 320px at 94% 88%, rgba(20, 184, 166, 0.1), transparent 72%),
        linear-gradient(180deg, rgba(236, 246, 255, 0.93), rgba(232, 243, 255, 0.92));
    color: var(--ink-900);
}

.product-section .section-tag {
    color: var(--brand-500);
}

.product-section .section-head h2 {
    color: var(--ink-900);
}

.product-section .section-head p {
    color: var(--ink-500);
}

.product-marquee-wrap {
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    overflow: hidden;
    padding: 8px 0;
}

.product-carousel {
    position: relative;
    overflow: hidden;
    border-radius: 0;
    padding: 0;
    background: transparent;
    border: 0;
}

.product-track {
    display: flex;
    gap: 18px;
    width: max-content;
    transform: translate3d(0, 0, 0);
    will-change: transform;
    padding-inline: 20px;
}

.product-slide {
    width: min(380px, calc(100vw - 3.2rem));
    border-radius: 18px;
    overflow: hidden;
    background: linear-gradient(154deg, rgba(255, 255, 255, 0.95), rgba(237, 247, 255, 0.92));
    border: 1px solid rgba(148, 196, 235, 0.32);
    box-shadow: 0 16px 34px rgba(10, 40, 67, 0.16);
    flex-shrink: 0;
}

.product-image-wrap {
    aspect-ratio: 8 / 5;
    background: #e5f0f8;
    overflow: hidden;
}

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

.product-content {
    padding: 16px;
}

.category-pill {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0 10px;
    border-radius: 999px;
    font-size: 0.77rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.category-baby {
    color: #7a4a0f;
    background: #fff2e1;
}

.category-teen {
    color: #0f4974;
    background: #e7f5ff;
}

.category-family {
    color: #0c6157;
    background: #e5fbf6;
}

.product-content h3 {
    margin: 4px 0 8px;
    font-size: 1.15rem;
    color: #08223d;
}

.audience {
    margin: 0 0 9px;
    font-size: 0.84rem;
    color: var(--brand-500);
    font-weight: 600;
}

.product-content p {
    margin: 0;
    color: #295074;
}

.product-content ul {
    margin: 14px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 8px;
}

.product-content li {
    font-size: 0.9rem;
    color: #386082;
    padding-left: 18px;
    position: relative;
}

.product-content li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: var(--brand-400);
}

.card-link {
    margin-top: 14px;
    display: inline-flex;
    align-items: center;
    font-weight: 700;
    color: #0f6db3;
}

.card-link:hover {
    color: var(--brand-400);
}

.assistant-section {
    background:
        radial-gradient(760px 330px at 12% 14%, rgba(59, 143, 235, 0.14), transparent 74%),
        linear-gradient(180deg, rgba(236, 246, 255, 0.92), rgba(239, 248, 255, 0.9));
}

.assistant-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.9fr);
    gap: 18px;
}

.assistant-panel,
.assistant-side {
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.84);
    border: 1px solid rgba(19, 95, 151, 0.17);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-card);
    padding: clamp(20px, 4vw, 30px);
}

.assistant-head h2 {
    margin: 12px 0 10px;
    font-family: "Outfit", "Noto Sans SC", sans-serif;
    font-size: clamp(1.55rem, 4vw, 2.2rem);
    line-height: 1.2;
}

.assistant-head p {
    margin: 0;
    color: var(--ink-600, #275074);
}

.assistant-log {
    margin-top: 18px;
    height: 360px;
    border-radius: 14px;
    background:
        linear-gradient(180deg, rgba(241, 248, 255, 0.92), rgba(230, 243, 255, 0.9));
    border: 1px solid rgba(20, 91, 143, 0.12);
    padding: 14px;
    overflow-y: auto;
    display: grid;
    gap: 10px;
}

.assistant-msg {
    max-width: min(92%, 520px);
    border-radius: 14px;
    padding: 10px 12px;
    line-height: 1.5;
    font-size: 0.94rem;
    box-shadow: 0 8px 20px rgba(15, 58, 94, 0.08);
}

.assistant-msg p {
    margin: 0;
}

.assistant-msg--bot {
    justify-self: start;
    background: #fff;
    border: 1px solid rgba(20, 91, 143, 0.12);
    color: var(--ink-700);
}

.assistant-msg--user {
    justify-self: end;
    color: #fff;
    background: linear-gradient(145deg, var(--brand-500), var(--brand-400));
}

.assistant-form {
    margin-top: 12px;
    display: flex;
    gap: 8px;
}

.assistant-form input {
    flex: 1;
    min-height: 46px;
    border-radius: 12px;
    border: 1px solid rgba(20, 91, 143, 0.22);
    padding: 0 14px;
    font: inherit;
    color: var(--ink-900);
}

.assistant-form input:focus {
    outline: 2px solid rgba(30, 138, 217, 0.3);
    border-color: var(--brand-400);
}

.assistant-form button {
    min-height: 46px;
    border-radius: 12px;
    border: none;
    padding: 0 20px;
    color: #fff;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    background: linear-gradient(145deg, var(--teal-400), var(--brand-400));
}

.assistant-form button:hover,
.assistant-form button:focus-visible {
    opacity: 0.92;
    outline: none;
}

.assistant-side h3 {
    margin: 0 0 12px;
    font-size: 1.08rem;
}

.assistant-quick-list {
    display: grid;
    gap: 8px;
}

.assistant-quick {
    border-radius: 12px;
    border: 1px solid rgba(20, 91, 143, 0.18);
    background: #f6fbff;
    color: var(--ink-700);
    font: inherit;
    text-align: left;
    padding: 10px 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.assistant-quick:hover,
.assistant-quick:focus-visible {
    background: #e9f6ff;
    border-color: rgba(20, 91, 143, 0.3);
    outline: none;
}

.testimonial-section {
    background:
        linear-gradient(180deg, rgba(239, 248, 255, 0.92), rgba(235, 246, 255, 0.9));
}

.testimonial-stage {
    position: relative;
    min-height: 220px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(17, 92, 145, 0.14);
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.94), rgba(237, 247, 255, 0.9));
    box-shadow: var(--shadow-card);
    padding: clamp(20px, 4vw, 36px);
    overflow: hidden;
}

.testimonial-card {
    position: absolute;
    inset: 24px;
    opacity: 0;
    transform: translateX(14px);
    transition: opacity 0.36s ease, transform 0.36s ease;
    pointer-events: none;
}

.testimonial-card.is-active {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

.quote {
    margin: 0;
    color: var(--ink-700);
    font-size: clamp(1rem, 2.6vw, 1.25rem);
}

.person {
    margin: 20px 0 0;
    font-weight: 700;
    color: var(--ink-900);
}

.role {
    margin: 0;
    color: var(--ink-500);
    font-size: 0.9rem;
}

.testimonial-controls {
    position: absolute;
    right: 18px;
    bottom: 16px;
    display: flex;
    gap: 8px;
    z-index: 3;
}

.testimonial-controls button {
    border: 1px solid rgba(19, 95, 151, 0.25);
    background: #fff;
    color: var(--ink-700);
    border-radius: 999px;
    padding: 7px 12px;
    cursor: pointer;
    font-weight: 600;
}

.testimonial-controls button:hover,
.testimonial-controls button:focus-visible {
    background: var(--brand-500);
    color: #fff;
    outline: none;
    border-color: transparent;
}

.timeline-track {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(300px, 1fr);
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 8px;
}

.timeline-section {
    background:
        radial-gradient(740px 280px at 90% 4%, rgba(20, 184, 166, 0.1), transparent 72%),
        linear-gradient(180deg, rgba(236, 246, 255, 0.92), rgba(233, 245, 255, 0.9));
}

.timeline-card {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(19, 95, 151, 0.14);
    border-radius: var(--radius-md);
    padding: 18px;
    box-shadow: var(--shadow-card);
}

.timeline-card .year {
    margin: 0;
    display: inline-flex;
    min-height: 26px;
    align-items: center;
    padding: 0 9px;
    border-radius: 999px;
    background: #e6f5ff;
    color: var(--brand-500);
    font-weight: 700;
    font-size: 0.82rem;
}

.timeline-card h3 {
    margin: 10px 0 6px;
    font-size: 1.04rem;
}

.timeline-card p {
    margin: 0;
    font-size: 0.92rem;
    color: var(--ink-700);
}

.contact-section {
    background:
        linear-gradient(180deg, rgba(238, 247, 255, 0.92), rgba(233, 244, 255, 0.9));
    padding-top: clamp(4rem, 7vw, 6rem);
    padding-bottom: clamp(4.5rem, 8vw, 7rem);
}

.contact-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.92fr);
    gap: 18px;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(16, 86, 136, 0.15);
    box-shadow: var(--shadow-soft);
}

.contact-shell > div {
    padding: clamp(22px, 4vw, 34px);
    background: #fff;
}

.contact-shell h2 {
    margin: 12px 0 14px;
    font-family: "Outfit", "Noto Sans SC", sans-serif;
    font-size: clamp(1.7rem, 4vw, 2.4rem);
    line-height: 1.2;
}

.contact-shell p {
    margin: 0;
    color: var(--ink-700);
}

.contact-card {
    background: linear-gradient(150deg, #f0f8ff, #e2f2ff);
}

.contact-card p {
    margin: 0 0 8px;
}

.site-footer {
    padding: 30px 0 44px;
    background: #061323;
    color: rgba(255, 255, 255, 0.9);
}

.footer-shell {
    display: grid;
    gap: 6px;
}

.footer-shell p {
    margin: 0;
    font-size: 0.93rem;
}

.back-to-top {
    position: fixed;
    right: 18px;
    bottom: 18px;
    width: 42px;
    aspect-ratio: 1;
    border-radius: 12px;
    border: 1px solid rgba(20, 87, 137, 0.2);
    background: rgba(255, 255, 255, 0.92);
    color: var(--ink-700);
    font-size: 1.1rem;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: all 0.25s ease;
    z-index: 65;
}

.back-to-top.is-visible {
    opacity: 1;
    pointer-events: auto;
}

.back-to-top:hover,
.back-to-top:focus-visible {
    transform: translateY(-2px);
    color: #fff;
    background: var(--brand-500);
    outline: none;
}

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: transform 0.56s ease, opacity 0.56s ease;
}

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

@keyframes hero-scale {
    to {
        transform: scale(1.12);
    }
}

@keyframes float-y {
    0%,
    100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-7px);
    }
}

@keyframes bounce-down {
    0%,
    100% {
        transform: rotate(45deg) translateY(0);
    }
    50% {
        transform: rotate(45deg) translateY(5px);
    }
}

@media (max-width: 1080px) {
    .site-nav {
        position: absolute;
        top: 74px;
        left: 12px;
        right: 12px;
        display: grid;
        gap: 2px;
        background: rgba(255, 255, 255, 0.96);
        border-radius: 14px;
        padding: 8px;
        border: 1px solid rgba(19, 95, 151, 0.12);
        box-shadow: 0 20px 44px rgba(9, 31, 58, 0.14);
        opacity: 0;
        transform: translateY(-8px);
        pointer-events: none;
        transition: all 0.24s ease;
    }

    .site-nav a {
        color: var(--ink-700);
    }

    .site-nav.is-open {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .mobile-menu-toggle {
        display: inline-block;
    }

    .metric-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .split-layout,
    .assistant-shell,
    .contact-shell {
        grid-template-columns: 1fr;
    }

    .scenario-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 700px) {
    .container {
        width: min(1540px, calc(100% - 1.3rem));
    }

    .nav-shell {
        min-height: 72px;
    }

    .hero {
        min-height: 92svh;
    }

    .hero h1 {
        margin-top: 12px;
    }

    .hero-actions {
        margin-top: 22px;
    }

    .hero-tags {
        margin-top: 20px;
    }

    .metric-grid {
        grid-template-columns: 1fr;
    }

    .product-slide {
        width: min(300px, calc(100vw - 2rem));
    }

    .testimonial-card {
        inset: 18px;
    }

    .testimonial-stage {
        min-height: 280px;
    }

    .testimonial-controls {
        right: 12px;
        bottom: 12px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .hero-image {
        transform: none;
    }
}