/* PWMM4 手机端收口补丁。所有规则仅在窄屏生效，不改变桌面版。 */
@media (max-width: 620px) {
    .site-nav {
        width: calc(100% - 28px);
        min-height: 76px;
        gap: 10px;
    }

    .brand-topline {
        height: 40px;
        gap: 7px;
    }

    .brand-cat-logo {
        height: 36px;
    }

    .brand-home-hint {
        display: inline-flex !important;
        padding: 3px 6px;
        font-size: 8px;
    }

    .nav-actions {
        gap: 8px;
    }

    .mobile-nav-menu { display: block; }
    .mobile-nav-menu > summary { min-height:38px;padding:0 11px;display:flex;align-items:center;gap:5px;border:1px solid rgba(0,0,0,.08);border-radius:999px;background:#f5f5f7;color:#202124;font-size:12px;font-weight:650;cursor:pointer; }
    .mobile-nav-menu > summary span:first-child { font-size:15px;line-height:1; }
    .mobile-nav-menu[open] > summary { color:#0071e3;background:#edf6ff;border-color:rgba(0,113,227,.2); }
    .mobile-nav-panel { position:fixed;left:14px;right:14px;top:82px;z-index:1300;max-height:calc(100vh - 102px);padding:12px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;overflow:auto;border:1px solid rgba(0,0,0,.08);border-radius:22px;background:rgba(255,255,255,.97);box-shadow:0 24px 70px rgba(20,35,55,.2);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px); }
    .mobile-nav-panel a { min-width:0;padding:13px 12px;display:flex;flex-direction:column;gap:3px;border-radius:14px;background:#f6f7f9; }
    .mobile-nav-panel a:active { background:#eaf4ff; }
    .mobile-nav-panel strong { font-size:14px;color:#1d1d1f; }
    .mobile-nav-panel span { overflow:hidden;color:#747b84;font-size:10px;line-height:1.35;text-overflow:ellipsis;white-space:nowrap; }

    .icon-button {
        width: 38px;
        height: 38px;
    }

    .account-login-button,
    .account-menu-trigger {
        min-height: 38px;
        padding: 0 13px;
        font-size: 13px;
    }

    .hero-section {
        min-height: 0 !important;
        padding: 46px 18px 48px !important;
    }

    .hero-section h1 {
        margin-bottom: 14px;
        font-size: clamp(31px, 8.6vw, 38px) !important;
        letter-spacing: -1.4px !important;
    }

    .hero-platform-name {
        display: inline !important;
        margin-top: 0 !important;
        font-size: inherit !important;
        letter-spacing: inherit !important;
    }

    .hero-section p {
        padding: 0 8px;
        margin-top: 6px;
        font-size: 15px !important;
        line-height: 1.55;
    }

    .hero-actions {
        display: grid !important;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        width: 100%;
        max-width: 430px;
        gap: 8px;
        margin: 30px auto 0;
    }

    .hero-actions .primary-button,
    .hero-actions .secondary-button {
        min-width: 0 !important;
        padding: 11px 4px;
        font-size: 13px;
        white-space: nowrap;
    }

    .daily-wind-section {
        padding: 62px 18px 52px !important;
    }

    .daily-wind-heading {
        margin-bottom: 20px;
    }

    .daily-wind-heading h2 {
        margin: 8px 0 8px;
        font-size: 30px !important;
        font-weight: 700;
        letter-spacing: -0.9px !important;
    }

    .daily-wind-heading p {
        margin: 0;
        font-size: 14px !important;
    }

    .daily-wind-card {
        padding: 20px 18px !important;
        border-radius: 22px !important;
    }

    .daily-wind-card h3 {
        font-size: 22px;
    }

    .daily-wind-summary {
        margin: 18px 0;
        font-size: 16px !important;
        line-height: 1.65 !important;
    }

    .daily-wind-summary.is-scrollable {
        max-height: 390px;
        padding-right: 7px;
    }

    .daily-wind-summary .daily-wind-summary-line {
        margin: 0 0 10px;
        white-space: normal;
    }

    .daily-wind-summary .daily-wind-summary-line.is-numbered {
        display: block;
        margin-top: 8px;
        padding: 10px 12px;
        border-left: 3px solid rgba(0, 113, 227, 0.64);
        border-radius: 0 10px 10px 0;
        background: rgba(255, 255, 255, 0.58);
    }

    .daily-wind-sources {
        gap: 7px;
    }

    .daily-wind-sources a {
        font-size: 12px;
    }

    .modules-section {
        padding: 54px 0 !important;
    }

    .modules-section .section-heading {
        margin-bottom: 24px;
    }

    .modules-section .section-heading h2 {
        margin-top: 8px;
        font-size: 32px;
        line-height: 1.15;
        letter-spacing: -1.2px;
    }

    .module-grid {
        gap: 14px;
    }

    .module-card {
        min-height: 230px;
        padding: 24px;
        border-radius: 24px;
    }

    .module-icon {
        width: 46px;
        height: 46px;
        border-radius: 14px;
        font-size: 20px;
    }

    .module-card h3 {
        margin: 24px 0 8px;
        font-size: 23px;
    }

    .module-card p {
        margin-bottom: 18px;
        font-size: 14px;
        line-height: 1.65;
    }

    .container.py-5 {
        padding-top: 38px !important;
        padding-bottom: 58px !important;
    }

    .container.py-5 h1 {
        font-size: 30px;
    }

    .container.py-5 .lead,
    .container.py-5 .text-muted {
        line-height: 1.55;
    }

    .container.py-5 .card-body.p-4 {
        padding: 18px !important;
    }

    .container.py-5 .input-group-lg > .form-control,
    .container.py-5 .input-group-lg > .btn {
        min-height: 50px;
        font-size: 16px;
    }
}

@media (max-width: 380px) {
    .brand-home-hint {
        font-size: 7px;
        padding: 3px 5px;
    }

    .account-login-button,
    .account-menu-trigger {
        max-width: 112px;
    }

    .mobile-nav-menu > summary { width:38px;padding:0;justify-content:center; }
    .mobile-nav-menu > summary span:last-child { display:none; }

    .hero-actions .primary-button,
    .hero-actions .secondary-button {
        font-size: 12px;
    }
}