/* ============ 设计变量 ============ */
:root {
    --blue: #56A0FD;
    --blue-deep: #3B82F6;
    --blue-soft: #EAF3FF;
    --ink: #1A1C1D;
    --ink-2: #4B5563;
    --ink-3: #9CA3AF;
    --bg: #F6F8FB;
    --card: #FFFFFF;
    --line: #E8EDF3;
    --radius: 22px;
    --shadow-sm: 0 2px 10px rgba(26, 42, 74, .06);
    --shadow-md: 0 12px 36px rgba(26, 42, 74, .10);
    --font: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; background: var(--bg); }

body {
    font-family: var(--font);
    color: var(--ink);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

.container {
    width: min(1240px, 100% - 3rem);
    margin-inline: auto;
}

/* ============ 导航 ============ */
.nav {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 100;
    background: transparent;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    border-bottom: 1px solid transparent;
    transition: background .3s, backdrop-filter .3s, border-color .3s, box-shadow .3s;
}

.nav.scrolled {
    background: rgba(255, 255, 255, .7);
    -webkit-backdrop-filter: saturate(1.6) blur(18px);
    backdrop-filter: saturate(1.6) blur(18px);
    border-color: var(--line);
    box-shadow: var(--shadow-sm);
}

.nav-inner {
    width: min(1240px, 100% - 3rem);
    margin-inline: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

.nav-logo img { height: 34px; width: auto; }

.nav-links { display: flex; align-items: center; gap: .4rem; }

.nav-links a {
    padding: .45rem 1rem;
    border-radius: 999px;
    font-size: .95rem;
    color: var(--ink-2);
    transition: color .2s, background .2s;
}

.nav-links a:hover { color: var(--blue-deep); background: var(--blue-soft); }
.nav-links a.active { color: var(--blue-deep); font-weight: 600; }

.nav-links .nav-cta {
    color: #fff;
    background: linear-gradient(135deg, var(--blue), var(--blue-deep));
    font-weight: 600;
    box-shadow: 0 6px 16px rgba(86, 160, 253, .35);
}
.nav-links .nav-cta:hover { color: #fff; background: var(--blue-deep); }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: 0;
    padding: 8px;
}
.nav-toggle span {
    width: 22px; height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform .3s, opacity .3s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
    position: relative;
    padding: 150px 0 90px;
    overflow: hidden;
    background:
        radial-gradient(720px 420px at 12% 0%, rgba(86, 160, 253, .16), transparent 65%),
        radial-gradient(640px 480px at 92% 18%, rgba(140, 120, 255, .12), transparent 65%),
        radial-gradient(520px 360px at 70% 90%, rgba(86, 200, 253, .10), transparent 65%),
        var(--bg);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    align-items: center;
    gap: clamp(2rem, 5vw, 4rem);
}

.hero-badge {
    display: inline-block;
    padding: .35rem 1rem;
    border-radius: 999px;
    background: var(--blue-soft);
    color: var(--blue-deep);
    font-size: .88rem;
    font-weight: 600;
    margin-bottom: 1.2rem;
}

.hero h1 {
    font-size: clamp(2.1rem, 4.6vw, 3.4rem);
    line-height: 1.25;
    letter-spacing: .02em;
    font-weight: 800;
}
.hero h1 .dot { color: var(--blue); }

.hero-sub {
    margin-top: 1.1rem;
    max-width: 30em;
    color: var(--ink-2);
    font-size: clamp(1rem, 1.4vw, 1.1rem);
}

.hero-actions { display: flex; gap: .9rem; margin-top: 2rem; flex-wrap: wrap; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .8rem 1.7rem;
    border-radius: 999px;
    border: 0;
    font-size: 1rem;
    font-weight: 600;
    transition: transform .2s, box-shadow .2s, background .2s;
}
.btn:active { transform: scale(.97); }

.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--blue), var(--blue-deep));
    box-shadow: 0 10px 24px rgba(86, 160, 253, .40);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(86, 160, 253, .48); }

.btn-ghost {
    color: var(--ink);
    background: var(--card);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
}
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--blue); color: var(--blue-deep); }

/* 手机样机 */
.hero-phones {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: clamp(.6rem, 1.6vw, 1.2rem);
}

.phone {
    border-radius: clamp(18px, 2.4vw, 30px);
    padding: clamp(5px, .7vw, 8px);
    background: linear-gradient(160deg, #fff, #eef3fa);
    box-shadow: var(--shadow-md), inset 0 0 0 1px rgba(255, 255, 255, .8);
    transition: transform .35s ease;
    flex: 0 1 176px;
}
.phone video {
    border-radius: clamp(13px, 1.8vw, 23px);
    aspect-ratio: 9 / 19.5;
    object-fit: cover;
    width: 100%;
    background: var(--blue-soft);
}
.phone-1 { transform: rotate(-5deg) translateY(14px); }
.phone-2 { transform: translateY(-12px); z-index: 1; flex-basis: 190px; }
.phone-3 { transform: rotate(5deg) translateY(14px); }
.phone:hover { transform: translateY(-8px) rotate(0); }

/* 数据条 */
.hero-stats {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: clamp(2.5rem, 5vw, 4rem);
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 1.8rem clamp(1rem, 3vw, 2.5rem);
}
.hero-stats li { text-align: center; }
.hero-stats li + li { border-left: 1px solid var(--line); }
.hero-stats strong {
    display: block;
    font-size: clamp(1.3rem, 2.6vw, 1.9rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--blue-deep), var(--blue));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-stats span { font-size: .88rem; color: var(--ink-3); }

/* ============ 通用 Section ============ */
.section { padding: clamp(5rem, 10vw, 9rem) 0; }
.section-tinted { background: linear-gradient(180deg, #fff, var(--bg)); }

.section-head { text-align: center; margin-bottom: clamp(2.8rem, 6vw, 4.5rem); }

.section-eyebrow {
    font-size: .82rem;
    font-weight: 700;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--blue);
}

.section-head h2 {
    font-size: clamp(1.7rem, 3.4vw, 2.4rem);
    font-weight: 800;
    margin-top: .3rem;
}

.section-sub { color: var(--ink-2); margin: .8rem auto 0; max-width: 42em; font-size: clamp(1rem, 1.3vw, 1.08rem); }

/* ============ 创作理解 ============ */
.phi-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(1.4rem, 3vw, 2.4rem);
}

.phi-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: clamp(1.8rem, 3vw, 2.6rem);
    box-shadow: var(--shadow-sm);
    transition: transform .3s, box-shadow .3s;
}
.phi-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }

.phi-figure {
    height: 168px;
    display: grid;
    place-items: center;
    border-radius: 16px;
    background: radial-gradient(circle at 50% 100%, var(--blue-soft), #fff 75%);
    margin-bottom: 1.4rem;
}
.phi-figure img { max-height: 120px; width: auto; }

.phi-card h3 { font-size: 1.18rem; margin-bottom: .7rem; }
.phi-card h3::after {
    content: "";
    display: block;
    width: 32px; height: 3px;
    margin-top: .5rem;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--blue), transparent);
}
.phi-card p { color: var(--ink-2); font-size: .97rem; line-height: 1.8; }

/* ============ 用户评论 ============ */
/* 厂商筛选：分段滑块 */
.rev-filter {
    display: flex;
    width: max-content;
    max-width: 100%;
    margin: 1.4rem auto 0;
    padding: .3rem;
    gap: .2rem;
    background: #EEF2F7;
    border-radius: 999px;
}
.rev-chip {
    border: 0;
    background: transparent;
    color: var(--ink-2);
    font: inherit;
    font-size: .86rem;
    font-weight: 600;
    padding: .5rem 1.15rem;
    border-radius: 999px;
    cursor: pointer;
    transition: color .25s, background .25s, box-shadow .25s;
}
.rev-chip:hover { color: var(--ink); }
.rev-chip.active {
    background: var(--card);
    color: var(--blue-deep);
    box-shadow: var(--shadow-sm);
}

/* 评论墙：双行同向自动滚动，悬停暂停 */
.review-wall {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
    overflow: hidden;
    margin-top: 1.6rem;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
            mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}
.rev-row { overflow: hidden; }
.rev-track {
    display: flex;
    width: max-content;
    will-change: transform;
    animation: rev-scroll 110s linear infinite;
}
.review-wall:hover .rev-track { animation-play-state: paused; }
@keyframes rev-scroll {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}

.rev-card {
    flex: 0 0 clamp(258px, 24vw, 322px);
    margin-right: 1.4rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 1.4rem 1.5rem;
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: transform .3s, box-shadow .3s;
}
.rev-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.rev-card::before {
    content: "“";
    position: absolute;
    top: .1rem; left: .8rem;
    font-size: 2.4rem;
    line-height: 1;
    color: var(--blue);
    opacity: .26;
    font-family: Georgia, serif;
}

.rev-card p {
    font-size: .93rem;
    color: var(--ink);
    line-height: 1.75;
    padding-top: .6rem;
    min-height: 3.5em;
}

.rev-card figcaption {
    margin-top: .9rem;
    padding-top: .7rem;
    border-top: 1px dashed var(--line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .6rem;
}
.rev-theme {
    font-size: .8rem;
    color: var(--ink-3);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.rev-badge {
    flex: none;
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .02em;
    color: var(--ink-3);
}

@media (prefers-reduced-motion: reduce) {
    .rev-row { overflow-x: auto; }
    .rev-track { animation: none; }
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(14px); }
    to { opacity: 1; transform: none; }
}

/* ============ 关于我们 ============ */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.15fr;
    gap: clamp(2rem, 4.5vw, 4rem);
    align-items: stretch;
}

.about-text {
    background: linear-gradient(150deg, var(--blue-soft), #fff 70%);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: clamp(2rem, 3.4vw, 2.8rem);
    box-shadow: var(--shadow-sm);
}
.about-text p { color: var(--ink-2); line-height: 1.85; }
.about-text p + p { margin-top: 1.15rem; }

.about-cards { display: grid; gap: 1.2rem; grid-auto-rows: 1fr; }

.qr-group {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.6rem;
    box-shadow: var(--shadow-sm);
}
.qr-group h3 { font-size: 1.05rem; margin-bottom: 1.1rem; }
.qr-group h3 small { color: var(--ink-3); font-weight: 500; margin-left: .5rem; }

.qr-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.qr-card { display: block; text-align: center; text-decoration: none; color: inherit; }
.qr-card img {
    display: block;
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 20%;
    transition: transform .3s, box-shadow .3s;
}
.qr-card:hover img { transform: scale(1.05); box-shadow: var(--shadow-md); }
.qr-caption { display: block; margin-top: .55rem; line-height: 1.4; }
.qr-caption strong { display: block; font-size: .92rem; color: var(--ink); }
.qr-caption span { font-size: .78rem; color: var(--ink-3); }

/* ============ 超级棒的同事 ============ */
.cowork-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.cowork-gallery figure {
    margin: 0;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: var(--card);
}
.cowork-gallery img {
    display: block;
    width: 100%;
    height: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform .5s ease;
}
.cowork-gallery figure:hover img { transform: scale(1.04); }
.cowork-hero { grid-column: 1 / -1; }
.cowork-hero img { aspect-ratio: 16 / 6; object-position: center bottom; }

@media (max-width: 720px) {
    .cowork-gallery { grid-template-columns: 1fr 1fr; }
    .cowork-hero { grid-column: 1 / -1; }
    .cowork-hero img { aspect-ratio: 16 / 9; }
}

/* ============ 联系我们 ============ */
.section-contact { padding-top: 0; }

.contact-card {
    text-align: center;
    background:
        radial-gradient(560px 260px at 18% -30%, rgba(255, 255, 255, .22), transparent 70%),
        linear-gradient(135deg, var(--blue), var(--blue-deep));
    border-radius: calc(var(--radius) + 6px);
    padding: clamp(2.5rem, 6vw, 4rem) clamp(1.4rem, 4vw, 3rem);
    color: #fff;
    box-shadow: 0 24px 60px rgba(86, 160, 253, .38);
}

.contact-card h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; }
.contact-card > p {
    max-width: 34em;
    margin: .8rem auto 1.8rem;
    opacity: .92;
    font-size: .98rem;
}

.email-pill {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    background: rgba(255, 255, 255, .96);
    border-radius: 999px;
    padding: .5rem .5rem .5rem 1.5rem;
    box-shadow: 0 10px 30px rgba(17, 45, 92, .25);
    max-width: 100%;
}
.email-pill span {
    color: var(--ink);
    font-weight: 700;
    font-size: clamp(.95rem, 2.6vw, 1.15rem);
    letter-spacing: .02em;
    overflow-wrap: anywhere;
}
.btn-copy { padding: .6rem 1.3rem; font-size: .92rem; flex: none; }

/* ============ 页脚 ============ */
.footer {
    border-top: 1px solid var(--line);
    background: #fff;
    padding: 1.6rem 0;
}
.footer-inner {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem 2rem;
    justify-content: space-between;
    font-size: .82rem;
    color: var(--ink-3);
}
.footer-beian { display: flex; flex-wrap: wrap; gap: .4rem 1.4rem; }
.footer-beian a { display: inline-flex; align-items: center; gap: .35rem; transition: color .2s; }
.footer-beian a:hover { color: var(--blue-deep); }
.footer-beian img { height: 16px; width: auto; }

/* ============ 视频弹层 ============ */
.modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: grid;
    place-items: center;
    padding: 1.2rem;
    visibility: hidden;
    opacity: 0;
    transition: opacity .3s, visibility .3s;
}
.modal.open { visibility: visible; opacity: 1; }

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(10, 16, 28, .82);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}

.modal-body {
    position: relative;
    width: min(960px, 100%);
    transform: translateY(16px) scale(.97);
    transition: transform .3s;
}
.modal.open .modal-body { transform: none; }

.modal-body video {
    width: 100%;
    border-radius: 18px;
    background: #000;
    box-shadow: 0 30px 80px rgba(0, 0, 0, .5);
    max-height: 80vh;
}

.modal-close {
    position: absolute;
    top: -46px; right: 0;
    width: 36px; height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, .35);
    background: rgba(255, 255, 255, .12);
    color: #fff;
    font-size: .95rem;
    display: grid;
    place-items: center;
    transition: background .2s, transform .2s;
}
.modal-close:hover { background: rgba(255, 255, 255, .28); transform: rotate(90deg); }

/* ============ Toast ============ */
.toast {
    position: fixed;
    left: 50%;
    bottom: 2.2rem;
    transform: translate(-50%, 20px);
    background: var(--ink);
    color: #fff;
    padding: .7rem 1.5rem;
    border-radius: 999px;
    font-size: .92rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s, transform .3s, visibility .3s;
    z-index: 300;
}
.toast.show { opacity: 1; visibility: visible; transform: translate(-50%, 0); }

/* ============ 滚动渐入（仅 JS 可用时隐藏，避免无 JS 内容不可见） ============ */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }

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

/* ============ 响应式 ============ */
@media (max-width: 960px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-copy { display: flex; flex-direction: column; align-items: center; }
    .hero-phones { margin-top: 1rem; }
    .about-grid { grid-template-columns: 1fr; }
    .phi-grid { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; }
}

@media (max-width: 720px) {
    .nav-toggle { display: flex; }

    .nav-links {
        position: absolute;
        top: 68px;
        left: 0; right: 0;
        flex-direction: column;
        align-items: stretch;
        background: rgba(255, 255, 255, .97);
        -webkit-backdrop-filter: blur(18px);
        backdrop-filter: blur(18px);
        border-bottom: 1px solid var(--line);
        padding: .8rem 1.2rem 1.2rem;
        gap: .3rem;
        box-shadow: var(--shadow-md);
        display: none;
    }
    .nav-links.open { display: flex; animation: fadeUp .25s ease; }
    .nav-links a { padding: .8rem 1rem; text-align: center; }
    .nav-links .nav-cta { margin-top: .4rem; }

    .hero { padding-top: 108px; }

    .phone-1, .phone-3 { flex-basis: 130px; }
    .phone-2 { flex-basis: 148px; }

    .hero-stats { grid-template-columns: 1fr; gap: 1.1rem; padding: 1.5rem; }
    .hero-stats li + li { border-left: 0; border-top: 1px solid var(--line); padding-top: 1.1rem; }

    .rev-card { flex-basis: clamp(230px, 78vw, 300px); }

    .qr-grid { gap: .7rem; }

    .job-card { flex-direction: column; text-align: center; }

    .email-pill {
        flex-direction: column;
        border-radius: 24px;
        padding: 1.1rem;
        gap: .8rem;
        width: 100%;
    }
    .btn-copy { width: 100%; justify-content: center; }

    .footer-inner { justify-content: center; text-align: center; }
    .footer-beian { justify-content: center; }
}