/* SimAsst 官网 — 整页滚动 + 混排布局 */

:root {
    --brand: #0a9676;
    --brand-dark: #087a60;
    --text: #1e2a36;
    --text-muted: #5a6a7a;
    --surface: rgba(255, 255, 255, 0.94);
    --shadow: 0 8px 24px rgba(15, 35, 55, 0.12);
    --radius: 10px;
    --nav-h: 52px;
    --icp-footer-h: 32px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-padding-top: var(--nav-h);
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    color: var(--text);
    user-select: text;
    overflow-y: scroll;
    margin: 0;
}

img,
video,
svg {
    max-width: 100%;
    height: auto;
}

#resume {
    width: 100%;
    padding-bottom: calc(var(--icp-footer-h) + env(safe-area-inset-bottom, 0px));
}

.site-section {
    min-height: 100vh;
    padding: calc(var(--nav-h) + 28px) 0 56px;
    box-sizing: border-box;
    scroll-margin-top: var(--nav-h);
}

.site-section.item-1 {
    min-height: 100vh;
    padding-top: var(--nav-h);
    padding-bottom: 40px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.navbar {
    min-height: var(--nav-h);
    margin-bottom: 0;
    background: rgba(20, 28, 36, 0.55);
    backdrop-filter: blur(8px);
}

.navbar-fixed-top {
    padding-top: env(safe-area-inset-top, 0px);
}

.navbar.black {
    background: rgba(20, 28, 36, 0.78);
}

.navbar.blue {
    background: rgba(10, 150, 118, 0.92);
}

.navbar-default .navbar-nav > .active > a,
.navbar-default .navbar-nav > .active > a:hover,
.navbar-default .navbar-nav > .active > a:focus {
    background-color: var(--brand-dark);
}

#menu li a {
    transition: background-color 0.25s ease, color 0.25s ease;
}

.navbar {
    transition: background-color 0.35s ease;
}

.section-heading {
    font-size: 28px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 8px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-muted);
    margin: 0 0 28px;
    font-weight: 400;
}

.section-block {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 16px;
}

.section-block-wide {
    max-width: 1100px;
}

/* 页内动效：进入视口时淡入，不触发切屏 */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal-on-scroll.is-revealed {
    opacity: 1;
    transform: translateY(0);
}

/* 左图右文 / 右图左文 卡片 */
.media-card {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 18px 20px;
    margin-bottom: 18px;
    text-align: left;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.media-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 32px rgba(15, 35, 55, 0.14);
}

.media-card.media-reverse {
    flex-direction: row-reverse;
}

.media-card .media-shot-wrap {
    flex: 0 0 42%;
    max-width: 420px;
}

.media-card .media-shot {
    width: 100%;
    height: auto;
    max-height: 220px;
    object-fit: cover;
    object-position: top center;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

.media-card .media-body {
    flex: 1;
    min-width: 0;
}

.media-card h3,
.media-card .media-heading {
    margin: 0 0 8px;
    font-size: 18px;
    font-weight: 600;
    color: var(--brand-dark);
}

.media-card p {
    margin: 0;
    font-size: 14px;
    line-height: 1.65;
    color: var(--text-muted);
}

.media-card .media-label {
    display: inline-block;
    margin-bottom: 8px;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 12px;
    background: rgba(10, 150, 118, 0.12);
    color: var(--brand-dark);
}

/* —— 首页 —— */
.item-1 .hero-content {
    position: relative;
    z-index: 2;
    margin: 0;
    padding: 0 20px;
    max-width: 100%;
    box-sizing: border-box;
}

.item-1 .word {
    position: relative;
    z-index: 2;
    margin: 0;
}

.item-1 .hero-brand {
    margin: 0;
    font-size: inherit;
    font-weight: inherit;
}

.item-1 .hero-title,
.item-1 .word > span:first-child {
    display: block;
    font-size: 48px;
    font-weight: 700;
    color: #0A9676;
    text-shadow: 5px -2px 8px #151414;
    line-height: 1.15;
}

.item-1 .hero-subtitle,
.item-1 .word > span.hidden-xs,
.item-1 .word > span.col-xs-12 {
    display: block;
    margin-top: 8px;
    font-size: 20px;
    color: #B6BF31;
    text-shadow: 9px -2px 15px #000;
    line-height: 1.35;
}

.item-1 .motto {
    font-size: 22px;
    color: #e8f5f0;
    margin-top: 12px;
    line-height: 1.45;
    padding: 0 8px;
}

.item-1 .hero-promo {
    display: inline-block;
    margin-top: 18px;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    color: #0b3d32;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 999px;
    text-decoration: none;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.item-1 .hero-promo:hover,
.item-1 .hero-promo:focus {
    color: #065a47;
    background: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.22);
    text-decoration: none;
}

.item-1 .corner {
    opacity: 0.92;
}

/* —— 产品概述 —— */
.item-2 .page2-title {
    display: block;
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 16px;
    color: #fff;
}

.item-2 .overview-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin: 24px 0 0;
}

.item-2 .overview-cards > [class*="col-"] {
    float: none;
    width: auto;
    padding: 0;
    margin: 0;
    display: flex;
    flex: 1 1 calc(50% - 10px);
    min-width: 0;
}

.item-2 .container .icon-infomation,
.item-2 .icon-infomation {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 22px 18px 20px;
    margin-bottom: 0;
    color: var(--text);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    height: auto;
    min-height: 0;
}

.item-2 .overview-cards .icon-infomation {
    flex: 1;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-sizing: border-box;
}

.item-2 .overview-cards .icon-infomation img {
    width: 56px;
    height: 56px;
    max-height: none;
    object-fit: contain;
    flex-shrink: 0;
}

.item-2 .icon-infomation h4 {
    color: var(--brand-dark);
    font-size: 16px;
    font-weight: 600;
    margin: 14px 0 8px;
    flex-shrink: 0;
}

.item-2 .icon-infomation p {
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.55;
    margin: 0;
}

.item-2 .overview-cards .icon-infomation p {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.item-2 .icon-infomation:hover {
    transform: translateY(-4px);
}

.item-2 .overview-highlight {
    margin-top: 28px;
}

@media (min-width: 992px) {
    .item-2 .overview-cards > [class*="col-"] {
        flex: 1 1 calc(25% - 15px);
    }
}

/* —— 核心功能 —— */
.item-3 {
    background: #eef2f6;
}

.item-3 .feature-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.item-3 .feature-tags span {
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 13px;
    background: rgba(10, 150, 118, 0.12);
    color: var(--brand-dark);
}

/* —— 应用场景：卡片网格（上图下文） —— */
.item-4 {
    background: linear-gradient(165deg, #eef2f6 0%, #e4ebf3 55%, #d8e2ec 100%);
}

.scenario-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.scenario-card {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    text-align: left;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.scenario-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 32px rgba(15, 35, 55, 0.14);
}

.scenario-card-photo {
    position: relative;
    width: 100%;
    aspect-ratio: 3 / 2;
    background: #c5d4e0;
    overflow: hidden;
}

.scenario-card-photo img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.scenario-photo-src {
    position: absolute;
    right: 8px;
    bottom: 7px;
    padding: 2px 6px;
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: rgba(255, 255, 255, 0.82);
    text-decoration: none;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
    background: rgba(0, 0, 0, 0.22);
    border-radius: 3px;
    opacity: 0.55;
    transition: opacity 0.2s ease, background 0.2s ease;
}

.scenario-card-photo:hover .scenario-photo-src,
.scenario-photo-src:hover,
.scenario-photo-src:focus-visible {
    opacity: 0.95;
    background: rgba(0, 0, 0, 0.38);
}

.scenario-card-body {
    flex: 1;
    padding: 18px 20px 20px;
}

.scenario-card-body h3 {
    margin: 0 0 10px;
    font-size: 18px;
    font-weight: 600;
    color: var(--brand-dark);
}

.scenario-points {
    margin: 0;
    padding-left: 18px;
    font-size: 14px;
    line-height: 1.65;
    color: var(--text-muted);
}

.scenario-points li {
    margin-bottom: 6px;
}

.scenario-points li:last-child {
    margin-bottom: 0;
}

.scenario-points code {
    font-size: 12px;
    padding: 1px 5px;
    border-radius: 4px;
    background: rgba(10, 150, 118, 0.1);
    color: var(--brand-dark);
}

.scenario-photo-credit {
    margin: 22px 0 0;
    font-size: 12px;
    line-height: 1.5;
    color: var(--text-muted);
    text-align: center;
}

.scenario-photo-credit a {
    color: inherit;
    text-decoration: underline;
    text-decoration-color: rgba(100, 116, 139, 0.45);
    text-underline-offset: 2px;
}

.scenario-photo-credit a:hover,
.scenario-photo-credit a:focus-visible {
    color: var(--brand);
    text-decoration-color: currentColor;
}

/* —— 功能亮点 —— */
.item-5-wrap {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 16px;
}

.item-5 .section-heading {
    color: #fff;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.35);
    margin-bottom: 20px;
}

.feature-showcase {
    background: rgba(255, 255, 255, 0.96);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 28px;
}

.feature-tabs {
    list-style: none;
    margin: 0;
    padding: 12px;
    width: 200px;
    background: #f4f7fa;
    border-right: 1px solid #e3e8ee;
}

.feature-tabs li {
    margin-bottom: 6px;
}

.feature-tabs li.active button {
    background: var(--brand);
    color: #fff;
}

.feature-tabs button {
    width: 100%;
    border: none;
    background: transparent;
    color: var(--text);
    text-align: left;
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.feature-tabs button:hover {
    background: rgba(10, 150, 118, 0.12);
}

.feature-data {
    display: none;
}

.feature-panel {
    flex: 1;
    min-width: 280px;
    display: flex;
    align-items: stretch;
}

.feature-panel .feature-image {
    width: 55%;
    min-height: 240px;
    object-fit: cover;
    object-position: top center;
    transition: opacity 0.35s ease;
}

.feature-copy {
    width: 45%;
    padding: 22px 24px;
    text-align: left;
}

.feature-copy .feature-title {
    margin: 0 0 10px;
    font-size: 20px;
    color: var(--brand-dark);
}

.feature-copy .feature-desc {
    margin: 0;
    font-size: 14px;
    line-height: 1.65;
    color: var(--text-muted);
}

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

.quick-tile {
    background: rgba(255, 255, 255, 0.92);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 14px 10px;
    text-align: center;
    transition: transform 0.25s ease;
}

.quick-tile:hover {
    transform: translateY(-3px);
}

.quick-tile img {
    width: 48px;
    height: 48px;
    margin-bottom: 8px;
}

.quick-tile h4 {
    margin: 0;
    font-size: 13px;
    color: var(--brand-dark);
}

.quick-tile p {
    margin: 4px 0 0;
    font-size: 11px;
    color: var(--text-muted);
}

/* —— 联系我们 —— */
.item-6 {
    background: linear-gradient(145deg, #0a9676 0%, #065a47 100%) !important;
    color: #fff !important;
    min-height: 60vh;
}

.item-6-inner {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
    box-sizing: border-box;
}

.item-6-inner a {
    color: #dff7ef;
    text-decoration: underline;
}

.item-6 h1,
.item-6 h2 {
    font-size: 40px;
    margin-bottom: 16px;
}

.item-6 .word {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 12px;
    color: #ecf8f3;
}

.trial-offer {
    text-align: left;
    margin: 20px auto 24px;
    padding: 22px 24px;
    max-width: 100%;
    width: 100%;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: var(--radius);
    backdrop-filter: blur(6px);
    box-sizing: border-box;
}

.trial-offer-badge {
    display: inline-block;
    margin-bottom: 10px;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #dff7ef;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 999px;
}

.trial-offer-title {
    font-size: 22px;
    font-weight: 600;
    margin: 0 0 10px;
    color: #fff;
    line-height: 1.35;
}

.trial-offer-title strong {
    font-size: 28px;
    font-weight: 800;
    color: #ffe08a;
}

.trial-offer-lead {
    font-size: 14px;
    line-height: 1.65;
    color: #ecf8f3;
    margin: 0 0 14px;
}

.trial-offer-steps {
    margin: 0 0 16px;
    padding: 0 0 0 18px;
    font-size: 14px;
    line-height: 1.6;
    color: #dff7ef;
}

.trial-offer-steps li {
    margin-bottom: 6px;
}

.trial-offer-steps li:last-child {
    margin-bottom: 0;
}

.trial-offer-link {
    display: inline-block;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 600;
    color: #065a47 !important;
    background: #fff;
    border-radius: 8px;
    text-decoration: none !important;
    transition: background 0.2s ease, transform 0.2s ease;
}

.trial-offer-link:hover,
.trial-offer-link:focus {
    background: #f0faf7;
    transform: translateY(-1px);
    text-decoration: none !important;
}

.trial-offer-code-wrap {
    position: relative;
    margin: 0 0 16px;
    padding: 14px 16px;
    background: rgba(0, 0, 0, 0.18);
    border: 1px dashed rgba(255, 224, 138, 0.55);
    border-radius: 10px;
}

.trial-offer-code-label {
    display: block;
    margin-bottom: 8px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #ffe08a;
}

.trial-offer-code-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.trial-offer-code {
    flex: 1 1 220px;
    margin: 0;
    padding: 10px 12px;
    font-family: Consolas, "Courier New", monospace;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.04em;
    word-break: break-all;
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 8px;
    transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.trial-offer-code.is-copied-flash {
    color: #fff;
    background: rgba(126, 255, 196, 0.14);
    border-color: rgba(126, 255, 196, 0.75);
    box-shadow: 0 0 0 3px rgba(126, 255, 196, 0.22);
    animation: trialCodeFlash 0.55s ease;
}

@keyframes trialCodeFlash {
    0% { transform: scale(1); }
    35% { transform: scale(1.015); }
    100% { transform: scale(1); }
}

.trial-offer-copy-btn {
    flex: 0 0 auto;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 600;
    color: #065a47;
    background: #ffe08a;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease, color 0.2s ease;
}

.trial-offer-copy-btn:hover,
.trial-offer-copy-btn:focus {
    background: #fff3c4;
    transform: translateY(-1px);
}

.trial-offer-copy-btn.is-copied {
    color: #0a5c3a;
    background: #7effc4;
    transform: scale(1.04);
    box-shadow: 0 4px 14px rgba(126, 255, 196, 0.35);
}

.trial-offer-copy-toast {
    display: block;
    margin-top: 10px;
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.45;
    color: #065a47;
    background: #dff7ef;
    border: 1px solid rgba(126, 255, 196, 0.55);
    border-radius: 8px;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 0.28s ease, transform 0.28s ease;
}

.trial-offer-copy-toast.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.trial-offer-copy-toast.is-error {
    color: #7a2e2e;
    background: #ffe8e8;
    border-color: rgba(255, 140, 140, 0.55);
}

.trial-offer-code-hint {
    margin: 10px 0 0;
    font-size: 12px;
    line-height: 1.5;
    color: rgba(236, 248, 243, 0.88);
}

.trial-offer-note {
    margin: 12px 0 0;
    font-size: 12px;
    line-height: 1.5;
    color: rgba(236, 248, 243, 0.82);
}

.trial-offer-note a {
    color: #ffe08a;
    text-decoration: underline;
}

.trial-offer-note a:hover,
.trial-offer-note a:focus {
    color: #fff3c4;
}

.download-offer {
    margin-bottom: 16px;
}

.download-channels {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.download-channel {
    display: grid;
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 14px;
    align-items: center;
    padding: 14px 16px;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-sizing: border-box;
}

.download-channel-label {
    display: block;
    margin-bottom: 8px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: #ffe08a;
}

.download-qr {
    flex-shrink: 0;
    margin: 0;
    text-align: center;
}

.download-qr img {
    display: block;
    width: 100px;
    height: 100px;
    margin: 0 auto;
    border-radius: 8px;
    background: #fff;
    padding: 4px;
    box-sizing: border-box;
}

.download-qr figcaption {
    margin-top: 6px;
    font-size: 11px;
    line-height: 1.35;
    color: rgba(236, 248, 243, 0.9);
}

.download-actions {
    flex: 1;
    min-width: 0;
}

.download-actions .trial-offer-note {
    word-break: break-word;
    overflow-wrap: anywhere;
}

.trial-offer-link-block {
    margin-bottom: 8px;
}

.wechat-offer {
    margin-bottom: 16px;
}

.promo-qrcodes {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin: 18px 0 12px;
}

.promo-qr {
    flex: 0 1 180px;
    margin: 0;
    padding: 14px 16px;
    text-align: center;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-sizing: border-box;
}

.promo-qr img {
    display: block;
    width: 140px;
    height: 140px;
    margin: 0 auto;
    border-radius: 8px;
    background: #fff;
    padding: 4px;
    box-sizing: border-box;
}

.promo-qr figcaption {
    margin-top: 10px;
    font-size: 13px;
    font-weight: 700;
    color: #ffe08a;
}

.promo-qr-hint {
    margin: 6px 0 0;
    font-size: 11px;
    line-height: 1.4;
    color: rgba(236, 248, 243, 0.82);
}

@media (max-width: 992px) {
    .scenario-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .scenario-card-body {
        padding: 16px 18px 18px;
    }

    .media-card,
    .media-card.media-reverse {
        flex-direction: column;
    }

    .media-card .media-shot-wrap {
        flex: none;
        max-width: none;
        width: 100%;
    }

    .feature-panel {
        flex-direction: column;
    }

    .feature-panel .feature-image,
    .feature-copy {
        width: 100%;
    }

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

/* ========== 手机端适配 ========== */
@media (max-width: 767px) {
    :root {
        --nav-h: 50px;
        --icp-footer-h: 36px;
    }

    html, body {
        overflow-x: hidden;
        max-width: 100%;
    }

    .navbar .container {
        padding-left: max(12px, env(safe-area-inset-left, 0px));
        padding-right: max(12px, env(safe-area-inset-right, 0px));
    }

    /* Bootstrap 默认 -15px 会抵消 container 内边距，导致左侧菜单按钮被裁切 */
    .navbar .container > .navbar-header,
    .navbar .container > .navbar-collapse {
        margin-left: 0;
        margin-right: 0;
    }

    .navbar-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 10px;
        width: 100%;
        max-width: 100%;
        float: none;
    }

    .resume .navbar-brand {
        order: 1;
        flex: 1 1 auto;
        min-width: 0;
        margin-left: 0 !important;
        margin-right: 0;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        font-size: 16px;
        padding: 14px 0;
        float: none;
    }

    .navbar-toggle {
        order: 2;
        flex-shrink: 0;
        float: none !important;
        margin: 0 !important;
        padding: 10px 12px;
        min-width: 44px;
        min-height: 44px;
        box-sizing: border-box;
    }

    .navbar-fixed-top .navbar-collapse {
        margin-left: calc(-1 * max(12px, env(safe-area-inset-left, 0px)));
        margin-right: calc(-1 * max(12px, env(safe-area-inset-right, 0px)));
        padding: 6px 0 10px;
        background: rgba(18, 26, 34, 0.97);
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        max-height: 70vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .navbar-nav {
        margin: 0;
    }

    .navbar-nav > li > a {
        padding: 14px 20px !important;
        font-size: 15px !important;
        border-radius: 0;
    }

    .site-section {
        min-height: 0;
        padding: calc(var(--nav-h) + 16px) 0 36px;
    }

    .site-section.item-1 {
        min-height: 100svh;
        min-height: 100vh;
        padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px));
    }

    .item-1 .hero-content {
        position: static;
        width: 100%;
        padding: 0 16px 56px;
    }

    .item-1 .next-page {
        bottom: calc(72px + env(safe-area-inset-bottom, 0px));
        z-index: 3;
    }

    .section-block,
    .item-5-wrap {
        padding-left: 12px;
        padding-right: 12px;
        max-width: 100%;
    }

    .section-block-wide {
        max-width: 100%;
    }

    .row {
        margin-left: 0;
        margin-right: 0;
    }

    .row > [class*="col-"] {
        padding-left: 0;
        padding-right: 0;
    }

    .section-heading {
        font-size: 22px;
        margin-bottom: 6px;
    }

    .section-subtitle {
        font-size: 14px;
        margin-bottom: 18px;
        line-height: 1.5;
        padding: 0 4px;
    }

    .item-2 .page2-title {
        font-size: 22px;
        margin-bottom: 12px;
    }

    .item-1 .hero-title,
    .item-1 .word > span:first-child {
        font-size: 34px;
    }

    .item-1 .hero-subtitle,
    .item-1 .word > span.col-xs-12 {
        font-size: 16px;
    }

    .item-1 .motto {
        font-size: 15px;
    }

    .item-1 .hero-promo {
        font-size: 12px;
        padding: 8px 14px;
        margin-top: 14px;
        max-width: 92%;
        line-height: 1.45;
    }

    .item-1 .next-page {
        width: 52px;
        height: 52px;
        line-height: 58px;
        margin-left: -26px;
        bottom: 8%;
    }

    .item-1 .next-page span {
        font-size: 22px;
    }

    .item-2 .overview-cards {
        gap: 14px;
        margin-top: 16px;
    }

    .item-2 .overview-cards > [class*="col-"] {
        flex: 1 1 100%;
    }

    .item-2 .overview-cards .icon-infomation {
        padding: 18px 16px;
    }

    .icon-infomation {
        margin-bottom: 0 !important;
    }

    .icon-infomation h4 {
        font-size: 15px !important;
        margin-top: 8px;
    }

    .icon-infomation p {
        font-size: 13px !important;
        line-height: 1.5;
    }

    .icon-infomation img {
        max-height: 56px !important;
    }

    .item-2 .overview-cards .icon-infomation img {
        width: 52px !important;
        height: 52px !important;
        max-height: none !important;
    }

    .media-card {
        padding: 14px;
        gap: 12px;
        margin-bottom: 14px;
    }

    .media-card h3,
    .media-card .media-heading {
        font-size: 16px;
    }

    .media-card p {
        font-size: 13px;
        line-height: 1.55;
    }

    .media-card .media-shot {
        max-height: 180px;
    }

    .feature-tags {
        gap: 6px;
        margin-top: 14px;
    }

    .feature-tags span {
        font-size: 12px !important;
        padding: 5px 10px;
    }

    .feature-showcase {
        flex-direction: column;
        margin-bottom: 20px;
        border-radius: 10px;
    }

    .feature-panel {
        min-width: 0;
    }

    .feature-tabs {
        width: 100%;
        display: flex;
        flex-wrap: nowrap;
        gap: 8px;
        padding: 10px 12px;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scroll-snap-type: x proximity;
        border-right: none;
        border-bottom: 1px solid #e3e8ee;
    }

    .feature-tabs li {
        flex: 0 0 auto;
        margin: 0;
        scroll-snap-align: start;
    }

    .feature-tabs button {
        width: auto;
        white-space: nowrap;
        padding: 8px 14px;
        font-size: 13px;
    }

    .feature-panel .feature-image {
        min-height: 160px;
        max-height: 220px;
    }

    .feature-copy {
        padding: 16px;
    }

    .feature-copy .feature-title {
        font-size: 17px;
    }

    .feature-copy .feature-desc {
        font-size: 13px;
    }

    .quick-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .quick-tile {
        padding: 12px 8px;
    }

    .quick-tile img {
        width: 40px;
        height: 40px;
    }

    .item-6 h1,
    .item-6 h2 {
        font-size: 26px;
        line-height: 1.3;
    }

    .item-6-inner {
        padding-left: 12px;
        padding-right: 12px;
        padding-bottom: calc(20px + env(safe-area-inset-bottom, 0px));
    }

    .item-6 .word {
        font-size: 14px;
        padding: 0 8px;
    }

    .scenario-card-body h3 {
        font-size: 16px;
    }

    .scenario-points {
        font-size: 13px;
        padding-left: 16px;
    }

    .scenario-photo-credit {
        font-size: 11px;
        padding: 0 4px;
    }

    .item-6 .word p {
        word-break: break-word;
    }

    .item-6-inner code {
        word-break: break-all;
    }

    .trial-offer {
        padding: 18px 16px;
        margin-left: 4px;
        margin-right: 4px;
    }

    .trial-offer-title {
        font-size: 18px;
    }

    .trial-offer-title strong {
        font-size: 24px;
    }

    .trial-offer-lead,
    .trial-offer-steps {
        font-size: 13px;
    }

    .trial-offer-link {
        display: block;
        text-align: center;
        min-height: 44px;
        line-height: 1.35;
        padding-top: 12px;
        padding-bottom: 12px;
    }

    .trial-offer-code-row {
        flex-direction: column;
        align-items: stretch;
    }

    .trial-offer-code {
        flex: 1 1 auto;
        font-size: 13px;
        text-align: center;
    }

    .trial-offer-copy-btn {
        width: 100%;
        min-height: 44px;
    }

    .download-channels {
        gap: 10px;
    }

    .download-channel {
        grid-template-columns: 1fr;
        justify-items: center;
        text-align: center;
        padding: 14px 12px;
    }

    .download-actions {
        width: 100%;
    }

    .download-qr img {
        width: 96px;
        height: 96px;
    }

    .promo-qrcodes {
        gap: 12px;
    }

    .promo-qr {
        flex: 1 1 100%;
        max-width: 240px;
    }

    .promo-qr img {
        width: 120px;
        height: 120px;
    }
}

@media (max-width: 380px) {
    .item-1 .hero-title {
        font-size: 28px;
    }

    .item-1 .hero-subtitle {
        font-size: 14px;
    }

    .item-1 .motto {
        font-size: 14px;
    }

    .feature-tabs button {
        padding: 7px 11px;
        font-size: 12px;
    }

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

@media (hover: none) and (pointer: coarse) {
    .media-card:hover,
    .scenario-card:hover,
    .quick-tile:hover,
    .item-2 .icon-infomation:hover {
        transform: none;
        box-shadow: var(--shadow);
    }

    .item-1 .hero-promo:hover,
    .item-1 .hero-promo:focus {
        transform: none;
    }
}

/* ICP / 公安备案号 — 页脚悬挂 */
.site-icp-footer {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 20;
    padding: 6px 12px calc(6px + env(safe-area-inset-bottom, 0px));
    text-align: center;
    font-size: 12px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.75);
    background: rgba(30, 42, 54, 0.72);
    backdrop-filter: blur(4px);
    pointer-events: auto;
}

.site-icp-footer a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
}

.site-icp-footer a:hover,
.site-icp-footer a:focus {
    color: #fff;
    text-decoration: underline;
}

.site-icp-footer .site-icp-sep {
    margin: 0 0.5em;
    color: rgba(255, 255, 255, 0.45);
    user-select: none;
}

.site-icp-footer .site-mps-beian {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    vertical-align: middle;
}

.site-icp-footer .site-mps-beian img {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    border: 0;
}