/* ==========================================================================
   快连 · 全站样式
   ========================================================================== */

/* ---- 变量 ---- */
:root {
    --brand: #ff6b2c;
    --brand-dark: #ea580c;
    --brand-ink: #7c2d12;
    --accent: #f59e0b;
    --success: #16a34a;
    --success-soft: #dcfce7;

    --ink: #0f172a;
    --ink-soft: #334155;
    --muted: #64748b;
    --line: #e2e8f0;
    --line-soft: #eef2f7;

    --bg: #ffffff;
    --bg-soft: #fef7f2;

    --radius: 14px;
    --radius-sm: 9px;
    --radius-lg: 20px;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .08);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, .08);
    --shadow-lg: 0 20px 50px rgba(15, 23, 42, .14);

    --container: 1120px;
    --header-h: 68px;
}

/* ---- 基础重置 ---- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
    margin: 0;
    line-height: 1.25;
    font-weight: 700;
    letter-spacing: -0.01em;
}

p {
    margin: 0;
}

a {
    color: var(--brand);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

ul,
ol {
    margin: 0;
    padding: 0;
    list-style: none;
}

img,
svg {
    display: block;
    max-width: 100%;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- 按钮 ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: transform .15s ease, box-shadow .15s ease, background-color .15s ease;
    white-space: nowrap;
}

.btn:hover {
    text-decoration: none;
}

.btn-primary {
    background: var(--brand);
    color: #fff;
}

.btn-primary:hover {
    background: var(--brand-dark);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--brand);
    border-color: var(--brand);
}

.btn-outline:hover {
    background: rgba(255, 107, 44, .06);
}

.btn-light {
    background: #fff;
    color: var(--brand-ink);
}

.btn-light:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.btn-lg {
    padding: 13px 26px;
    font-size: 16px;
}

/* ==========================================================================
   顶部导航
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--line-soft);
}

.site-header.is-scrolled {
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: var(--header-h);
}

.logo {
    display: inline-flex;
    align-items: center;
    flex-shrink: 0;
}

.logo img {
    height: 40px;
    width: auto;
    display: block;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.header-nav a {
    padding: 8px 13px;
    border-radius: var(--radius-sm);
    color: var(--ink-soft);
    font-size: 15px;
    font-weight: 500;
}

.header-nav a:hover {
    color: var(--brand);
    text-decoration: none;
    background: rgba(255, 107, 44, .06);
}

.btn-download-header {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 22px;
    border-radius: 999px;
    background: var(--brand);
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    transition: transform .15s ease, background-color .15s ease, box-shadow .15s ease;
    white-space: nowrap;
}

.btn-download-header:hover {
    text-decoration: none;
    background: var(--brand-dark);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px;
    height: 42px;
    padding: 9px;
    background: transparent;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--ink);
    border-radius: 2px;
    transition: transform .2s ease, opacity .2s ease;
}

.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);
}

/* ==========================================================================
   首屏 Hero
   ========================================================================== */
.hero {
    background:
        radial-gradient(1000px 500px at 85% -10%, rgba(245, 158, 11, .14), transparent 60%),
        radial-gradient(800px 500px at 0% 0%, rgba(255, 107, 44, .12), transparent 55%),
        var(--bg);
    padding: 72px 0 64px;
    overflow: hidden;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 48px;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--brand);
    background: rgba(255, 107, 44, .1);
    border: 1px solid rgba(255, 107, 44, .18);
    padding: 5px 12px;
    border-radius: 999px;
    margin-bottom: 18px;
}

.hero h1 {
    font-size: clamp(30px, 4.6vw, 48px);
    margin-bottom: 18px;
    color: var(--ink);
}

.hero-lead {
    font-size: 17px;
    color: var(--ink-soft);
    max-width: 520px;
    margin-bottom: 28px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 22px;
}

.hero-platforms {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 12px;
}

.hero-platforms li {
    display: inline-flex;
    align-items: center;
    padding: 5px 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-soft);
    background: #fff;
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-visual img {
    width: 100%;
    max-width: 560px;
    height: auto;
    border-radius: 18px;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
}

.hero-highlight {
    font-style: normal;
    background: linear-gradient(120deg, var(--brand), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 0 4px var(--success-soft);
}

.status-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--success);
}

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

.section-soft {
    background: var(--bg-soft);
}

.section-head {
    max-width: 640px;
    margin: 0 auto 44px;
    text-align: center;
}

.section-head h2 {
    font-size: clamp(26px, 3.4vw, 34px);
    margin-bottom: 12px;
}

.section-sub {
    color: var(--muted);
    font-size: 16px;
}

/* ---- 核心优势卡片 ---- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.card {
    background: #fff;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius);
    padding: 26px;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--line);
}

.card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: rgba(255, 107, 44, .1);
    color: var(--brand);
    font-size: 22px;
    margin-bottom: 18px;
}

.card-title {
    font-size: 18px;
    margin-bottom: 8px;
}

.card-desc {
    color: var(--ink-soft);
    font-size: 15px;
    margin-bottom: 6px;
}

.card-value {
    color: var(--muted);
    font-size: 14px;
}

/* ---- 使用流程 ---- */
.step-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}

.step {
    position: relative;
    background: #fff;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius);
    padding: 24px;
}

.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--brand), var(--accent));
    color: #fff;
    font-weight: 700;
    font-size: 15px;
    margin-bottom: 14px;
}

.step-body h3 {
    font-size: 17px;
    margin-bottom: 6px;
}

.step-body p {
    color: var(--muted);
    font-size: 14px;
}

/* ---- 功能详解 ---- */
.deep-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.deep-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.deep-row.is-reverse .deep-copy {
    order: 2;
}

.deep-row.is-reverse .deep-visual {
    order: 1;
}

.deep-copy h3 {
    font-size: 22px;
    margin-bottom: 10px;
}

.deep-copy p {
    color: var(--ink-soft);
}

.deep-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 180px;
    background: var(--bg-soft);
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-lg);
}

.mock {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mock-routing .mock-line {
    position: absolute;
    top: 50%;
    left: 15%;
    right: 15%;
    height: 2px;
    background: linear-gradient(90deg, var(--brand), var(--accent));
    border-radius: 2px;
}

.mock-node {
    position: absolute;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid var(--brand);
}

.mock-node.n1 { top: 50%; left: 15%; transform: translate(-50%, -50%); }
.mock-node.n2 { top: 30%; left: 45%; transform: translate(-50%, -50%); border-color: var(--accent); }
.mock-node.n3 { top: 70%; left: 60%; transform: translate(-50%, -50%); border-color: var(--accent); }
.mock-node.n4 { top: 50%; left: 85%; transform: translate(-50%, -50%); }

.mock-status {
    flex-direction: column;
    gap: 14px;
}

.mock-status .status-dot {
    width: 14px;
    height: 14px;
}

.mock-bars {
    display: flex;
    align-items: flex-end;
    gap: 5px;
    height: 40px;
}

.mock-bars i {
    width: 8px;
    border-radius: 3px;
    background: var(--brand);
}

.mock-bars i:nth-child(1) { height: 12px; }
.mock-bars i:nth-child(2) { height: 22px; }
.mock-bars i:nth-child(3) { height: 34px; }
.mock-bars i:nth-child(4) { height: 26px; }
.mock-bars i:nth-child(5) { height: 18px; }

.mock-config {
    flex-direction: column;
    gap: 10px;
}

.cfg {
    width: 180px;
    padding: 10px 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: #fff;
    font-size: 14px;
    color: var(--ink-soft);
    text-align: center;
}

.cfg.is-on {
    border-color: var(--brand);
    background: rgba(255, 107, 44, .06);
    color: var(--brand);
    font-weight: 600;
}

.mock-security {
    flex-direction: column;
    gap: 12px;
}

.shield {
    font-size: 40px;
    line-height: 1;
}

.shield-label {
    font-size: 14px;
    color: var(--ink-soft);
    font-weight: 600;
}

/* ---- 平台支持表格 ---- */
.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius);
    background: #fff;
}

.platform-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 15px;
    min-width: 480px;
}

.platform-table th,
.platform-table td {
    text-align: left;
    padding: 15px 20px;
    border-bottom: 1px solid var(--line-soft);
}

.platform-table thead th {
    background: var(--bg-soft);
    color: var(--ink-soft);
    font-weight: 600;
    font-size: 14px;
}

.platform-table tbody tr:last-child td {
    border-bottom: none;
}

.platform-table tbody tr:hover td {
    background: var(--bg-soft);
}

.tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
}

.tag-ok {
    background: var(--success-soft);
    color: var(--success);
}

/* ---- FAQ ---- */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: #fff;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.faq-item summary {
    cursor: pointer;
    list-style: none;
    padding: 16px 20px;
    font-weight: 600;
    color: var(--ink);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: "+";
    font-size: 20px;
    color: var(--muted);
    line-height: 1;
    transition: transform .2s ease;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 20px 18px;
    color: var(--ink-soft);
    font-size: 15px;
}

.btn-download-table {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 18px;
    border-radius: 999px;
    background: var(--brand);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color .15s ease, transform .15s ease, box-shadow .15s ease;
}

.btn-download-table:hover {
    background: var(--brand-dark);
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(255, 107, 44, .25);
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
    background: #2a1609;
    color: #cbd5e1;
    padding: 44px 0 30px;
    text-align: center;
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 28px;
    margin-bottom: 22px;
}

.footer-nav a {
    color: #cbd5e1;
    font-size: 14px;
}

.footer-nav a:hover {
    color: #fff;
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: #94a3b8;
}

.footer-bottom a {
    color: #94a3b8;
}

.footer-bottom a:hover {
    color: #fff;
}

.footer-bottom .sep {
    color: #475569;
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 960px) {
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-visual {
        order: 2;
    }

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

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

    .deep-row,
    .deep-row.is-reverse .deep-copy,
    .deep-row.is-reverse .deep-visual {
        grid-template-columns: 1fr;
        order: initial;
        gap: 24px;
    }

    .deep-visual {
        min-height: 150px;
    }
}

@media (max-width: 720px) {
    :root {
        --header-h: 60px;
    }

    .header-nav {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        background: #fff;
        border-bottom: 1px solid var(--line);
        padding: 12px 20px 20px;
        box-shadow: var(--shadow-md);
        transform: translateY(-12px);
        opacity: 0;
        pointer-events: none;
        transition: opacity .18s ease, transform .18s ease;
    }

    .header-nav.is-open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .header-nav a {
        padding: 12px 14px;
        font-size: 16px;
    }

    .nav-toggle {
        display: flex;
    }

    .btn-download-header {
        display: none;
    }

    .hero {
        padding: 48px 0;
    }

    .section {
        padding: 56px 0;
    }

    .card-grid,
    .step-list {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   下载页
   ========================================================================== */
.header-nav a[aria-current="page"] {
    color: var(--brand);
    font-weight: 600;
    background: rgba(255, 107, 44, .06);
}

.page-hero {
    padding: 64px 0 56px;
    text-align: center;
    background:
        radial-gradient(800px 400px at 50% -10%, rgba(255, 107, 44, .12), transparent 60%),
        var(--bg);
}

.page-hero h1 {
    font-size: clamp(30px, 4.6vw, 42px);
    margin-bottom: 16px;
}

.page-hero .hero-badge {
    margin-bottom: 16px;
}

.page-hero-lead {
    max-width: 640px;
    margin: 0 auto 16px;
    font-size: 17px;
    color: var(--ink-soft);
}

.page-hero-note {
    font-size: 14px;
    color: var(--muted);
}

/* 平台下载卡片 */
.platform-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}

.platform-card {
    background: #fff;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius);
    padding: 28px 24px;
    text-align: center;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.platform-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--line);
}

.platform-card i {
    font-size: 34px;
    color: var(--brand);
    margin-bottom: 12px;
}

.platform-card h2 {
    font-size: 20px;
    margin-bottom: 6px;
}

.platform-card p {
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 18px;
}

.platform-card .btn {
    width: 100%;
    padding: 12px 20px;
    border-radius: 999px;
    font-size: 15px;
}

/* 下载前说明 */
.check-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.check-list li {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    background: #fff;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    font-size: 15px;
    color: var(--ink-soft);
    line-height: 1.7;
}

.check-list li i {
    flex-shrink: 0;
    margin-top: 3px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--success-soft);
    color: var(--success);
    font-size: 12px;
}

.check-list li strong {
    color: var(--ink);
}

/* 版本更新 */
.changelog-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.changelog-item {
    background: #fff;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius);
    padding: 24px 26px;
}

.changelog-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.changelog-item p {
    color: var(--ink-soft);
    font-size: 15px;
}

.changelog-date {
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 8px;
}

.changelog-detail {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.changelog-detail li {
    font-size: 15px;
    color: var(--ink-soft);
    padding-left: 18px;
    position: relative;
}

.changelog-detail li::before {
    content: "•";
    position: absolute;
    left: 4px;
    color: var(--brand);
}

/* 下载页响应式 */
@media (max-width: 960px) {
    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 720px) {
    .platform-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   教程页
   ========================================================================== */
.jump-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 24px;
}

.jump-nav a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 18px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--ink-soft);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    background: #fff;
    transition: color .15s ease, border-color .15s ease;
}

.jump-nav a:hover {
    color: var(--brand);
    border-color: var(--brand);
    text-decoration: none;
}

.tutorial-section + .tutorial-section {
    margin-top: 56px;
    padding-top: 48px;
    border-top: 1px solid var(--line);
}

.tutorial-section h2 {
    font-size: 26px;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.tutorial-section h2 i {
    color: var(--brand);
    font-size: 24px;
}

.tutorial-meta {
    color: var(--muted);
    font-size: 14px;
    margin-bottom: 22px;
}

.tutorial-section h3 {
    font-size: 19px;
    margin: 26px 0 12px;
}

.tutorial-prep,
.tutorial-errors {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tutorial-prep li,
.tutorial-errors li {
    position: relative;
    padding-left: 22px;
    font-size: 15px;
    color: var(--ink-soft);
}

.tutorial-prep li::before {
    content: "•";
    position: absolute;
    left: 6px;
    color: var(--brand);
    font-weight: 700;
}

.tutorial-errors li::before {
    content: "!";
    position: absolute;
    left: 5px;
    color: #f59e0b;
    font-weight: 700;
}

.tutorial-steps {
    display: flex;
    flex-direction: column;
    gap: 12px;
    counter-reset: tstep;
}

.tutorial-steps li {
    position: relative;
    padding: 16px 20px 16px 58px;
    background: #fff;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-sm);
}

.tutorial-steps li::before {
    counter-increment: tstep;
    content: counter(tstep);
    position: absolute;
    left: 16px;
    top: 16px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--brand), var(--accent));
    color: #fff;
    font-weight: 700;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tutorial-steps h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.tutorial-steps p {
    color: var(--ink-soft);
    font-size: 15px;
}

.tutorial-steps .step-result {
    margin-top: 6px;
    font-size: 14px;
    color: var(--muted);
}

.tutorial-steps .step-result strong {
    color: var(--success);
    font-weight: 600;
}

/* ==========================================================================
   功能页
   ========================================================================== */
.feature-section + .feature-section {
    margin-top: 48px;
    padding-top: 40px;
    border-top: 1px solid var(--line);
}

.feature-section h2 {
    font-size: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 6px;
}

.feature-section h2 i {
    color: var(--brand);
    font-size: 22px;
}

.feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.feature-item {
    padding: 16px 20px;
    background: #fff;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-sm);
}

.feature-item h3 {
    font-size: 15px;
    color: var(--brand);
    margin-bottom: 6px;
}

.feature-item p {
    color: var(--ink-soft);
    font-size: 15px;
}

.feature-example {
    margin-top: 14px;
    padding: 14px 18px;
    background: var(--success-soft);
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--ink-soft);
}

.feature-example strong {
    color: var(--success);
    font-weight: 600;
}

@media (max-width: 720px) {
    .feature-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   常见问题页
   ========================================================================== */
.faq-search {
    position: relative;
    max-width: 480px;
    margin: 24px auto 0;
}

.faq-search input {
    width: 100%;
    padding: 13px 20px;
    border: 1px solid var(--line);
    border-radius: 999px;
    font-size: 15px;
    color: var(--ink);
    background: #fff;
    outline: none;
    transition: border-color .15s ease, box-shadow .15s ease;
}

.faq-search input:focus {
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(255, 107, 44, .12);
}

.faq-category + .faq-category {
    margin-top: 44px;
}

.faq-category h2 {
    font-size: 22px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.faq-category h2 i {
    color: var(--brand);
    font-size: 20px;
}

/* ==========================================================================
   关于我们页
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.about-points {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.about-points li {
    font-size: 15px;
    color: var(--ink-soft);
    padding: 14px 20px;
    background: #fff;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-sm);
}

.about-points a {
    font-weight: 600;
}

.about-points strong {
    color: var(--ink);
}

@media (max-width: 720px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   法律页面
   ========================================================================== */
.legal-section h2 {
    font-size: 22px;
    margin: 28px 0 12px;
}

.legal-section h2:first-child {
    margin-top: 0;
}

.legal-section p {
    color: var(--ink-soft);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 12px;
}

.legal-section ul {
    margin: 0 0 12px 20px;
    list-style: disc;
}

.legal-section ul li {
    color: var(--ink-soft);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 6px;
}

.legal-section strong {
    color: var(--ink);
}

/* 底部 CTA */
.cta-actions {
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 8px;
}