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

body {
    font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    color: #111;
    background: #fff;
    line-height: 1.5;
}

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

button {
    font-family: inherit;
    border: none;
    cursor: pointer;
}

.container {
    width: 1180px;
    max-width: calc(100% - 64px);
    margin: 0 auto;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(11, 15, 26, 0.88);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav {
    height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 180px;
    height: 50px;
    background: linear-gradient(135deg, #7c3aed, #a855f7);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: bold;
}

.logo-text {
    font-size: 24px;
    font-weight: 800;
    color: #7c3aed;
    letter-spacing: 0.5px;
}

.logo-text.purple {
    color: #7c3aed;
}

.nav-menu {
    display: flex;
    gap: 42px;
    color: #e5e7eb;
    font-size: 15px;
}

.nav-menu a {
    opacity: 0.9;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn {
    border-radius: 999px;
    padding: 10px 20px;
    transition: all 0.25s ease;
}

.btn-login {
    color: #fff;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.45);
}

.btn-try {
    background: linear-gradient(135deg, #7c3aed, #a855f7);
    color: #fff;
    padding: 10px 18px;
}

.btn-purple {
    background: linear-gradient(135deg, #6f3cff, #7c3aed);
    color: #fff;
    box-shadow: 0 10px 24px rgba(124, 58, 237, 0.25);
}

.btn-purple.small {
    padding: 8px 16px;
    font-size: 14px;
}

.btn-white {
    background: #fff;
    color: #111;
    padding: 10px 20px;
}

/* Hero */
.hero {
    position: relative;
    min-height: 720px;
    background:
            radial-gradient(circle at 50% 0%, rgba(76, 110, 245, 0.2), transparent 45%),
            #07101b;
    overflow: hidden;
}

.hero-bg-grid {
    position: absolute;
    inset: 0;
    transform: perspective(800px) rotateX(70deg) scale(2);
    transform-origin: top center;
    opacity: 0.28;
    background-image:
            linear-gradient(rgba(255, 255, 255, 0.18) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-inner {
    position: relative;
    z-index: 2;
    padding-top: 90px;
}

.hero-title {
    text-align: center;
    color: #fff;
    font-size: 72px;
    line-height: 1.18;
    font-weight: 600;
    letter-spacing: 1px;
    margin: 60px auto 40px;
}

.hero-card {
    border-radius: 28px;
    background:
            radial-gradient(circle at 80% 60%, rgba(255,255,255,0.55), transparent 28%),
            radial-gradient(circle at 20% 20%, rgba(255,255,255,0.16), transparent 22%),
            linear-gradient(135deg, #6d28d9 0%, #8b5cf6 48%, #c4b5fd 100%);
    min-height: 340px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 30px 80px rgba(76, 29, 149, 0.32);
}

.hero-card-content {
    width: 100%;
    text-align: center;
}

.hero-card-content h2 {
    color: #fff;
    font-size: 28px;
    font-weight: 500;
    margin-bottom: 44px;
}

.search-bar {
    width: 520px;
    max-width: calc(100% - 60px);
    height: 52px;
    margin: 0 auto;
    border-radius: 999px;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 18px;
    color: #444;
    box-shadow: 0 18px 40px rgba(0,0,0,0.12);
    font-size: 15px;
}

.search-prefix {
    color: #666;
    margin-right: 10px;
}

.search-text {
    flex: 1;
    text-align: left;
    color: #444;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-mic {
    color: #222;
    margin-left: 12px;
}

.search-mic button {
    background: transparent;
    border: none;
    padding: 0;
    display: flex;
    align-items: center;
}

/* 通用 section */
.section {
    padding: 76px 0;
}

.white-section {
    background: #fff;
}

.big-title {
    font-size: 24px;
    line-height: 1.45;
    font-weight: 700;
    max-width: 980px;
    margin-bottom: 42px;
}

/* 服务卡 */
.service-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 28px;
}

.service-card {
    border: 1px solid #e6e6e6;
    border-radius: 22px;
    padding: 26px 22px 28px;
    min-height: 250px;
    background: #fff;
    box-shadow: 0 6px 24px rgba(0,0,0,0.03);
}

.service-icon {
    color: #6fd9ef;
    font-size: 28px;
    margin-bottom: 28px;
}

.service-card h3 {
    font-size: 22px;
    margin-bottom: 34px;
    font-weight: 500;
}

.service-card p {
    font-size: 18px;
    line-height: 1.7;
    color: #222;
}

.left-action {
    margin-top: 18px;
}

/* logo section */
.logo-section {
    padding-top: 30px;
    padding-bottom: 60px;
}

.logo-title {
    text-align: center;
    font-size: 18px;
    color: #222;
    margin-bottom: 36px;
}

.brand-row {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 24px;
    align-items: center;
    text-align: center;
    color: #222;
    font-size: 20px;
    opacity: 0.8;
    padding: 10px 0;
}

/* title */
.sub-tag {
    color: #777;
    font-size: 18px;
    margin-bottom: 8px;
}

.section-title {
    font-size: 24px;
    margin-bottom: 14px;
}

.section-desc {
    font-size: 16px;
    color: #222;
    max-width: 1040px;
    margin-bottom: 36px;
}

/* 功能卡 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 26px;
}

.feature-card {
    min-height: 350px;
    border-radius: 28px;
    padding: 40px 36px;
    background:
            linear-gradient(rgba(255,255,255,0.05), rgba(255,255,255,0.05)),
            radial-gradient(circle at 20% 0%, rgba(255,255,255,0.15), transparent 35%),
            linear-gradient(135deg, #8b5cf6, #4c1d95);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
            linear-gradient(rgba(255,255,255,0.08) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255,255,255,0.08) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.3;
}

.feature-card h3,
.feature-card p,
.feature-card .quote {
    position: relative;
    z-index: 1;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 14px;
}

.quote {
    font-size: 72px;
    line-height: 1;
    opacity: 0.75;
    margin-bottom: 22px;
}

.feature-card p {
    font-size: 18px;
    line-height: 1.7;
    max-width: 86%;
}

/* 关键词管理 */
.keyword-section {
    padding-top: 10px;
}

.keyword-header {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    align-items: center;
    gap: 40px;
    margin-bottom: 36px;
}

.keyword-left-text {
    font-size: 22px;
    color: #222;
}

.keyword-right h2 {
    font-size: 30px;
    margin-bottom: 18px;
}

.keyword-right p {
    font-size: 16px;
    max-width: 680px;
    line-height: 1.8;
}

.gradient-border {
    background: linear-gradient(180deg, #7c3aed, #7dd3fc);
    padding: 16px;
    border-radius: 0;
}

.panel {
    margin-top: 20px;
}

.dashboard-top {
    background: #f6f6f8;
    padding: 30px 28px 18px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.stat-card {
    background: #fff;
    border-radius: 18px;
    border: 1px solid #e6e6e6;
    padding: 24px;
    min-height: 160px;
}

.stat-title {
    color: #777;
    font-size: 18px;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 52px;
    font-weight: 700;
    margin-bottom: 16px;
}

.stat-desc {
    color: #666;
    font-size: 16px;
}

.table-mock {
    background: #f6f6f8;
    padding: 0 28px 28px;
}

.table-row {
    display: grid;
    grid-template-columns: 50px 1.4fr 1fr 1fr 1fr 1fr 1fr 1fr;
    gap: 12px;
    background: #fff;
    padding: 18px 16px;
    border-bottom: 1px solid #eee;
    font-size: 15px;
}

.table-head {
    font-weight: 700;
    background: #fafafa;
}

/* split */
.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.split-layout.reverse {
    grid-template-columns: 1fr 1fr;
}

.split-text .small-gray {
    color: #8a8a8a;
    font-size: 18px;
    margin-bottom: 6px;
}

.split-text h2 {
    font-size: 24px;
    line-height: 1.5;
    margin-bottom: 18px;
}

.split-text p {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 16px;
    color: #222;
}

.split-text.long h2 {
    font-size: 22px;
}

.image-card {
    border-radius: 28px;
    min-height: 430px;
    padding: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-card.pastel {
    background: linear-gradient(135deg, rgba(125,211,252,0.55), rgba(255,220,181,0.55));
}

.image-card.mint {
    background: linear-gradient(135deg, rgba(45,212,191,0.55), rgba(255,220,181,0.7));
}

/* Calendar mock */
.calendar-mock,
.competitor-mock {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border-radius: 22px;
    padding: 20px;
    box-shadow: 0 14px 40px rgba(0,0,0,0.08);
}

.calendar-stats,
.comp-top {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 18px;
}

.calendar-stats div,
.comp-top div {
    background: #fafafa;
    border: 1px solid #eee;
    border-radius: 14px;
    padding: 12px;
}

.calendar-stats strong,
.comp-top strong {
    display: block;
    font-size: 24px;
    margin-bottom: 4px;
}

.calendar-stats span,
.comp-top span {
    color: #777;
    font-size: 12px;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}

.calendar-grid div {
    height: 54px;
    border-radius: 10px;
    background: #f6f7f9;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.calendar-grid div.green {
    background: #dcfce7;
}

.calendar-grid div.red {
    background: #fee2e2;
}

.comp-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.comp-item {
    border: 1px solid #ececec;
    border-radius: 14px;
    padding: 14px;
    background: #fff;
}

.comp-item-title {
    font-weight: 700;
    margin-bottom: 6px;
}

.comp-item-data {
    color: #666;
    font-size: 14px;
}

/* 媒体条 */
.media-strip {
    padding: 54px 0;
    background:
            linear-gradient(rgba(255,255,255,0.05), rgba(255,255,255,0.05)),
            linear-gradient(180deg, #d8b4fe 0%, #6d28d9 100%);
    position: relative;
    overflow: hidden;
}

.media-strip::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
            linear-gradient(rgba(255,255,255,0.16) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255,255,255,0.16) 1px, transparent 1px);
    background-size: 60px 60px;
    transform: perspective(800px) rotateX(72deg) scale(1.8);
    transform-origin: center top;
    opacity: 0.35;
}

.media-strip .container {
    position: relative;
    z-index: 1;
}

.media-strip h2 {
    text-align: center;
    font-size: 24px;
    margin-bottom: 36px;
    color: #111;
}

.media-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 34px;
    font-size: 26px;
    font-weight: 700;
    color: #111;
}

/* growth */
.growth-title {
    font-size: 24px;
    margin-bottom: 34px;
}

.growth-card {
    height: 300px;
    border-radius: 22px;
    background:
            linear-gradient(rgba(0,0,0,0.16), rgba(0,0,0,0.16)),
            linear-gradient(135deg, #d6b38a, #6a3a24 70%);
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
}

.growth-card::after {
    content: "";
    position: absolute;
    top: 0;
    right: 8%;
    width: 320px;
    height: 100%;
    background: linear-gradient(180deg, #111, #1f4d26);
    border-top-left-radius: 140px;
    border-top-right-radius: 140px;
    transform: rotate(12deg);
    opacity: 0.7;
}

.growth-label {
    position: absolute;
    left: 24px;
    bottom: 24px;
    color: #fff;
    font-size: 22px;
    z-index: 1;
}

/* AI platforms */
.ai-platforms {
    padding-top: 20px;
}

.ai-platforms-inner {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 40px;
    align-items: start;
}

.ai-left h3 {
    font-size: 30px;
    margin-bottom: 8px;
}

.ai-left p {
    font-size: 18px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(120px, 1fr));
    gap: 18px 28px;
    font-size: 26px;
    font-weight: 700;
    color: #111;
}

/* CTA dark */
.cta-dark {
    background: #181818;
    padding: 62px 0;
    color: #fff;
}

.cta-dark-inner {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    align-items: center;
}

.cta-left h2 {
    font-size: 28px;
    margin-bottom: 24px;
}

.cta-right {
    display: flex;
    flex-direction: column;
    gap: 18px;
    font-size: 20px;
}

/* footer */
.footer {
    background: #fff;
    padding: 56px 0 40px;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 60px;
}

.footer-brand p {
    margin-top: 22px;
    font-size: 18px;
    line-height: 1.6;
    max-width: 660px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 16px;
}

.footer-col a {
    display: block;
    font-size: 16px;
    color: #333;
    margin-bottom: 12px;
}

/* 响应式 */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 52px;
    }

    .service-cards,
    .feature-grid,
    .split-layout,
    .footer-inner,
    .cta-dark-inner,
    .ai-platforms-inner,
    .keyword-header {
        grid-template-columns: 1fr;
    }

    .brand-row {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .dashboard-top {
        grid-template-columns: 1fr;
    }

    .table-row {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        max-width: calc(100% - 32px);
    }

    .nav-menu {
        display: none;
    }

    .hero {
        min-height: 620px;
    }

    .hero-title {
        font-size: 38px;
        margin-top: 30px;
    }

    .hero-card {
        min-height: 260px;
        padding: 30px 0;
    }

    .hero-card-content h2 {
        font-size: 24px;
    }

    .search-bar {
        height: auto;
        min-height: 50px;
        padding: 12px 16px;
        flex-wrap: wrap;
        gap: 6px;
    }

    .service-cards,
    .feature-grid {
        grid-template-columns: 1fr;
    }

    .brand-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .media-logos {
        font-size: 20px;
        gap: 18px;
    }

    .platform-grid {
        grid-template-columns: 1fr 1fr;
        font-size: 22px;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
    }
}