* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    color: #ffffff;
    background:
        radial-gradient(circle at top left, rgba(85, 120, 255, 0.28), transparent 36%),
        radial-gradient(circle at top right, rgba(162, 89, 255, 0.25), transparent 35%),
        linear-gradient(180deg, #050816 0%, #071022 42%, #050816 100%);
    line-height: 1.7;
}

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

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(18px);
    background: rgba(5, 8, 22, 0.74);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo-box {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-mark {
    width: 44px;
    height: 44px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #5ee7ff, #8f5cff 52%, #ffcc70);
    color: #071022;
    font-size: 24px;
    font-weight: 900;
    box-shadow: 0 12px 34px rgba(113, 99, 255, 0.35);
}

.logo-title {
    font-size: 18px;
    font-weight: 800;
    line-height: 1.2;
}

.logo-subtitle {
    font-size: 12px;
    color: #aeb8d8;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 26px;
    color: #cfd6f6;
    font-size: 15px;
}

.nav-links a {
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: #ffffff;
}

.header-button {
    padding: 10px 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.16);
    color: #ffffff;
    font-size: 14px;
}

.hero-section {
    position: relative;
    overflow: hidden;
    padding: 86px 20px 92px;
}

.hero-bg-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(10px);
    opacity: 0.7;
    pointer-events: none;
}

.hero-glow-one {
    width: 360px;
    height: 360px;
    left: -140px;
    top: 80px;
    background: rgba(84, 174, 255, 0.18);
}

.hero-glow-two {
    width: 420px;
    height: 420px;
    right: -160px;
    top: 120px;
    background: rgba(172, 94, 255, 0.18);
}

.hero-inner {
    position: relative;
    max-width: 1180px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(105, 129, 255, 0.14);
    border: 1px solid rgba(137, 159, 255, 0.28);
    color: #d7ddff;
    font-size: 14px;
    margin-bottom: 22px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #5ee7ff;
    border-radius: 50%;
    box-shadow: 0 0 18px #5ee7ff;
}

.hero-left h1 {
    margin: 0;
    font-size: clamp(42px, 6vw, 72px);
    line-height: 1.08;
    letter-spacing: -2px;
}

.hero-desc {
    margin: 24px 0 0;
    max-width: 660px;
    color: #c4ccef;
    font-size: 18px;
}

.hero-actions {
    margin-top: 34px;
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.primary-button,
.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 24px;
    border-radius: 999px;
    font-weight: 700;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.primary-button {
    color: #06101f;
    background: linear-gradient(135deg, #5ee7ff, #9effc3);
    box-shadow: 0 16px 36px rgba(94, 231, 255, 0.24);
}

.secondary-button {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
}

.primary-button:hover,
.secondary-button:hover {
    transform: translateY(-2px);
}

.hero-stats {
    margin-top: 46px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    max-width: 520px;
}

.stat-item {
    padding: 18px 16px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.075);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-number {
    font-size: 30px;
    font-weight: 900;
    color: #ffffff;
}

.stat-label {
    color: #aeb8d8;
    font-size: 14px;
}

.hero-right {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.op-card {
    position: relative;
    width: min(100%, 440px);
    padding: 24px;
    border-radius: 34px;
    background:
        linear-gradient(145deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.05)),
        radial-gradient(circle at top, rgba(94, 231, 255, 0.14), transparent 55%);
    border: 1px solid rgba(255, 255, 255, 0.16);
    box-shadow: 0 30px 90px rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(20px);
}

.op-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #d8dfff;
}

.op-status {
    padding: 5px 10px;
    border-radius: 999px;
    background: rgba(158, 255, 195, 0.12);
    color: #9effc3;
    font-size: 12px;
}

.op-center {
    padding: 34px 0;
    display: flex;
    justify-content: center;
}

.op-circle {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.4), transparent 22%),
        linear-gradient(135deg, rgba(94, 231, 255, 0.95), rgba(143, 92, 255, 0.95));
    box-shadow:
        0 0 0 14px rgba(255, 255, 255, 0.05),
        0 0 80px rgba(94, 231, 255, 0.25);
    color: #071022;
}

.op-circle span {
    font-size: 17px;
    opacity: 0.78;
}

.op-circle strong {
    font-size: 34px;
    line-height: 1.1;
}

.op-flow {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.op-flow-item {
    padding: 14px;
    border-radius: 18px;
    background: rgba(5, 8, 22, 0.42);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.op-flow-item span {
    color: #5ee7ff;
    font-weight: 800;
    font-size: 13px;
}

.op-flow-item p {
    margin: 4px 0 0;
    color: #ffffff;
}

.float-card {
    position: absolute;
    padding: 14px 16px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.16);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(18px);
}

.float-card span {
    display: block;
    color: #aeb8d8;
    font-size: 12px;
}

.float-card strong {
    display: block;
    margin-top: 2px;
    color: #ffffff;
    font-size: 15px;
}

.float-card-one {
    left: 12px;
    top: 86px;
}

.float-card-two {
    right: 8px;
    bottom: 72px;
}

.section-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 84px 20px;
}

.section-title-box {
    max-width: 720px;
    margin-bottom: 34px;
}

.section-title-box.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-kicker {
    color: #5ee7ff;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.section-title-box h2,
.tools-left h2,
.cta-box h2 {
    margin: 0;
    font-size: clamp(30px, 4vw, 46px);
    line-height: 1.18;
    letter-spacing: -1px;
}

.section-title-box p,
.tools-left p,
.cta-box p {
    color: #b8c1e2;
    font-size: 17px;
    margin: 16px 0 0;
}

.problem-section,
.paths-section,
.experiment-section {
    background: rgba(255, 255, 255, 0.025);
}

.problem-grid,
.thinking-grid,
.path-grid,
.interview-grid {
    display: grid;
    gap: 18px;
}

.problem-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.problem-card,
.thinking-card,
.path-card,
.interview-card,
.tool-card {
    border-radius: 26px;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 18px 55px rgba(0, 0, 0, 0.18);
}

.problem-card {
    padding: 28px;
}

.problem-icon,
.card-index {
    color: #5ee7ff;
    font-weight: 900;
}

.problem-card h3,
.thinking-card h3,
.path-card h3,
.interview-card h3 {
    margin: 10px 0 8px;
    font-size: 21px;
}

.problem-card p,
.thinking-card p,
.path-card p,
.interview-card p,
.tool-card p {
    margin: 0;
    color: #b8c1e2;
}

.thinking-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.thinking-card {
    padding: 24px;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.thinking-card:hover {
    transform: translateY(-4px);
    border-color: rgba(94, 231, 255, 0.35);
}

.path-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.path-card {
    padding: 24px;
    min-height: 320px;
}

.path-card.highlight {
    background:
        linear-gradient(180deg, rgba(94, 231, 255, 0.16), rgba(143, 92, 255, 0.08)),
        rgba(255, 255, 255, 0.07);
    border-color: rgba(94, 231, 255, 0.28);
}

.path-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.path-tag {
    padding: 5px 11px;
    border-radius: 999px;
    background: rgba(94, 231, 255, 0.12);
    color: #5ee7ff;
    font-size: 13px;
}

.path-icon {
    color: #ffcc70;
}

.path-card ul {
    padding-left: 18px;
    margin: 18px 0 0;
    color: #d9def6;
}

.path-card li {
    margin: 6px 0;
}

.interview-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.interview-card {
    padding: 24px;
}

.interview-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.interview-meta span {
    padding: 5px 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.09);
    color: #cfd6f6;
    font-size: 12px;
}

.point-list {
    margin-top: 18px;
    display: grid;
    gap: 12px;
}

.point-list strong {
    color: #ffffff;
}

.money-tip {
    margin-top: 20px;
    padding: 16px;
    border-radius: 18px;
    background: rgba(158, 255, 195, 0.1);
    border: 1px solid rgba(158, 255, 195, 0.18);
    color: #cffff0;
    font-size: 14px;
}

.timeline {
    max-width: 860px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 18px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, #5ee7ff, rgba(143, 92, 255, 0.2));
}

.timeline-item {
    position: relative;
    padding-left: 58px;
    margin-bottom: 24px;
}

.timeline-dot {
    position: absolute;
    left: 8px;
    top: 28px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #5ee7ff;
    box-shadow: 0 0 0 8px rgba(94, 231, 255, 0.12);
}

.timeline-content {
    padding: 24px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.timeline-content span {
    color: #5ee7ff;
    font-weight: 800;
}

.timeline-content h3 {
    margin: 8px 0;
    font-size: 22px;
}

.timeline-content p {
    margin: 0;
    color: #b8c1e2;
}

.tools-panel {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 30px;
    align-items: center;
    padding: 32px;
    border-radius: 34px;
    background:
        radial-gradient(circle at top right, rgba(94, 231, 255, 0.12), transparent 44%),
        rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.tool-card {
    display: block;
    padding: 22px;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.tool-card:hover {
    transform: translateY(-3px);
    border-color: rgba(94, 231, 255, 0.32);
}

.tool-card span {
    color: #5ee7ff;
    font-weight: 900;
}

.tool-card strong {
    display: block;
    margin: 8px 0;
    font-size: 18px;
}

.cta-section {
    padding-bottom: 30px;
}

.cta-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 26px;
    padding: 34px;
    border-radius: 34px;
    background:
        linear-gradient(135deg, rgba(94, 231, 255, 0.16), rgba(143, 92, 255, 0.16)),
        rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.site-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(5, 8, 22, 0.82);
}

.footer-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 34px 20px;
    display: flex;
    justify-content: space-between;
    gap: 24px;
    align-items: center;
}

.footer-logo {
    font-size: 22px;
    font-weight: 900;
}

.footer-inner p {
    margin: 6px 0 0;
    color: #aeb8d8;
}

.footer-links {
    display: flex;
    gap: 18px;
    color: #cfd6f6;
}

@media (max-width: 980px) {
    .nav-links {
        display: none;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-right {
        min-height: auto;
    }

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

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

    .tools-panel {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .header-inner {
        padding: 12px 16px;
    }

    .header-button {
        display: none;
    }

    .hero-section {
        padding: 58px 16px 64px;
    }

    .hero-left h1 {
        font-size: 42px;
    }

    .hero-desc {
        font-size: 16px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .op-card {
        border-radius: 26px;
    }

    .op-circle {
        width: 180px;
        height: 180px;
    }

    .op-circle strong {
        font-size: 28px;
    }

    .float-card {
        display: none;
    }

    .section-inner {
        padding: 58px 16px;
    }

    .problem-grid,
    .thinking-grid,
    .path-grid,
    .interview-grid,
    .tools-grid {
        grid-template-columns: 1fr;
    }

    .cta-box {
        align-items: flex-start;
        flex-direction: column;
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-links {
        flex-wrap: wrap;
    }
}

.visit-soft-line {
    margin-top: 18px;
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    padding: 9px 13px;
    border-radius: 999px;
    color: rgba(207, 214, 246, 0.72);
    background: rgba(255, 255, 255, 0.055);
    border: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 13px;
    backdrop-filter: blur(14px);
}

.visit-soft-line em {
    font-style: normal;
    color: rgba(158, 255, 195, 0.92);
    font-weight: 800;
}

.visit-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: rgba(158, 255, 195, 0.9);
    box-shadow: 0 0 14px rgba(158, 255, 195, 0.55);
}

.visit-separator {
    color: rgba(207, 214, 246, 0.38);
}

.hero-feature-row {
    margin-top: 34px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    max-width: 720px;
}

.hero-feature-item {
    padding: 18px 17px;
    border-radius: 22px;
    background:
        linear-gradient(145deg, rgba(255, 255, 255, 0.095), rgba(255, 255, 255, 0.045));
    border: 1px solid rgba(255, 255, 255, 0.09);
    box-shadow: 0 14px 38px rgba(0, 0, 0, 0.14);
}

.hero-feature-item span {
    display: inline-flex;
    margin-bottom: 10px;
    color: #5ee7ff;
    font-size: 13px;
    font-weight: 900;
}

.hero-feature-item strong {
    display: block;
    color: #ffffff;
    font-size: 17px;
    line-height: 1.25;
}

.hero-feature-item p {
    margin: 7px 0 0;
    color: #aeb8d8;
    font-size: 14px;
    line-height: 1.55;
}
@media (max-width: 640px) {
    .visit-soft-line {
        align-items: flex-start;
        border-radius: 18px;
        line-height: 1.6;
    }

    .hero-feature-row {
        grid-template-columns: 1fr;
        margin-top: 26px;
    }
}