/* ============================================================
   NC解码 官网 — 统一样式
   配色：微信绿 #07C160 · 现代科技风
   ============================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary:       #07C160;
    --primary-dark:  #06AD56;
    --primary-light: #E8F5E9;
    --primary-rgb:   7, 193, 96;

    --bg:            #F8F9FA;
    --bg-card:       #FFFFFF;
    --bg-code:       #1E1E2E;

    --text:          #191919;
    --text-dim:      #666666;
    --text-bright:   #111111;

    --border:        #E5E5E5;

    --success:       #07C160;
    --danger:        #FA5151;
    --warning:       #ED6A0C;
    --info:          #10AEFF;

    --radius:        12px;
    --radius-sm:     8px;
    --radius-lg:     20px;

    --shadow-sm:     0 1px 3px rgba(0,0,0,.06);
    --shadow-md:     0 4px 16px rgba(0,0,0,.08);
    --shadow-lg:     0 8px 32px rgba(0,0,0,.10);
    --shadow-green:  0 4px 20px rgba(var(--primary-rgb), .15);

    --transition:    .25s cubic-bezier(.4,0,.2,1);
    --navbar-h:      64px;
}

html { scroll-behavior: smooth; overflow-y: scroll; }

body {
    font-family: -apple-system, "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }

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

/* ---------- Animations ---------- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(28px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(var(--primary-rgb), .4); }
    50%      { box-shadow: 0 0 0 12px rgba(var(--primary-rgb), 0); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-6px); }
}

.fade-in-up {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .6s cubic-bezier(.4,0,.2,1), transform .6s cubic-bezier(.4,0,.2,1);
}
.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* stagger children */
.fade-in-up.visible:nth-child(2) { transition-delay: .1s; }
.fade-in-up.visible:nth-child(3) { transition-delay: .2s; }
.fade-in-up.visible:nth-child(4) { transition-delay: .3s; }
.fade-in-up.visible:nth-child(5) { transition-delay: .4s; }
.fade-in-up.visible:nth-child(6) { transition-delay: .5s; }

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, .72);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(var(--primary-rgb), .08);
    box-shadow: 0 1px 4px rgba(0,0,0,.04);
    padding: 0 24px;
}

.navbar .container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--navbar-h);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-bright);
    letter-spacing: -.3px;
}

.logo img { width: 32px; height: 32px; }

.navbar nav {
    display: flex;
    align-items: center;
    gap: 2px;
}

.navbar nav a {
    position: relative;
    color: var(--text-dim);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition);
}

.navbar nav a:hover,
.navbar nav a.active {
    color: var(--primary);
    background: rgba(var(--primary-rgb), .06);
}

.navbar nav a.active::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 18px;
    height: 2px;
    background: var(--primary);
    border-radius: 1px;
}

/* Mobile hamburger */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 24px;
    cursor: pointer;
    padding: 4px;
    line-height: 1;
}

/* Footer helpers */
.footer-content { max-width: 600px; margin: 0 auto; }
.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    color: #ddd;
    font-size: 15px;
    margin-bottom: 6px;
}
.footer-copy { margin-top: 8px; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
    text-align: center;
    padding: 100px 24px 80px;
    background: linear-gradient(168deg, #E8F5E9 0%, #f0faf3 30%, var(--bg) 100%);
    position: relative;
    overflow: hidden;
}

/* subtle grid pattern */
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(var(--primary-rgb), .04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(var(--primary-rgb), .04) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
}

.hero .logo-large {
    width: 96px;
    height: 96px;
    margin-bottom: 24px;
    position: relative;
}

.hero h1 {
    font-size: 48px;
    font-weight: 800;
    color: var(--text-bright);
    margin-bottom: 16px;
    letter-spacing: -.5px;
    line-height: 1.2;
    position: relative;
}

.hero .subtitle {
    font-size: 18px;
    color: var(--text-dim);
    margin-bottom: 16px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.hero .tag {
    display: inline-block;
    background: rgba(var(--primary-rgb), .10);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 99px;
    margin-bottom: 28px;
    position: relative;
}

.hero .btn-group {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
}

/* ============================================================
   WAVE SEPARATOR
   ============================================================ */
.wave-separator {
    display: block;
    width: 100%;
    line-height: 0;
    margin-top: -2px;
}

.wave-separator svg {
    display: block;
    width: 100%;
    height: auto;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 32px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1.4;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(var(--primary-rgb), .25);
}
.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
    box-shadow: 0 4px 16px rgba(var(--primary-rgb), .30);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}
.btn-outline:hover {
    background: rgba(var(--primary-rgb), .06);
    transform: translateY(-1px);
}

.btn-lg {
    padding: 16px 40px;
    font-size: 17px;
    border-radius: var(--radius-lg);
}

.btn-pulse {
    animation: pulse 2s infinite;
}

/* ============================================================
   SECTIONS
   ============================================================ */
.section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 72px 24px;
}

.section-title {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-bright);
    margin-bottom: 8px;
    letter-spacing: -.3px;
    text-align: center;
}

.section-desc {
    color: var(--text-dim);
    font-size: 16px;
    margin-bottom: 40px;
    text-align: center;
}

/* ============================================================
   FEATURE CARDS
   ============================================================ */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    opacity: 0;
    transition: opacity var(--transition);
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: rgba(var(--primary-rgb), .25);
    box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card .icon {
    font-size: 36px;
    margin-bottom: 16px;
    display: block;
}

.feature-card h3 {
    color: var(--text-bright);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-dim);
    font-size: 14px;
    line-height: 1.7;
}

/* ============================================================
   STEPS — Horizontal Timeline
   ============================================================ */
.steps {
    display: flex;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
    counter-reset: step-counter;
}

.step-item {
    flex: 1;
    min-width: 180px;
    max-width: 260px;
    text-align: center;
    padding: 24px 16px;
    position: relative;
}

.step-item::before {
    counter-increment: step-counter;
    content: counter(step-counter);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    background: var(--primary);
    color: #fff;
    font-weight: 700;
    font-size: 18px;
    border-radius: 50%;
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), .25);
    position: relative;
    z-index: 1;
}

/* connector line between steps */
.step-item:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 47px;
    left: calc(50% + 28px);
    width: calc(100% - 56px);
    height: 2px;
    background: var(--border);
}

.step-item h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 6px;
}

.step-item p {
    font-size: 13px;
    color: var(--text-dim);
}

/* ============================================================
   FREE / PRICING SECTION
   ============================================================ */
.free-section {
    text-align: center;
    padding: 72px 24px;
}

.free-card {
    background: var(--bg-card);
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    text-align: center;
    max-width: 460px;
    margin: 0 auto;
    box-shadow: var(--shadow-green);
    position: relative;
    overflow: hidden;
}

.free-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), #34d399);
}

.free-card .price-amount {
    font-size: 52px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 4px;
}

.free-card .price-unit {
    font-size: 16px;
    font-weight: 400;
    color: var(--text-dim);
}

.free-card .price-note {
    font-size: 14px;
    color: var(--text-dim);
    margin: 10px 0 28px;
}

/* legacy pricing-card support */
.pricing-card {
    background: var(--bg-card);
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    text-align: center;
    max-width: 420px;
    margin: 0 auto;
    box-shadow: var(--shadow-green);
}

.pricing-card .price-amount {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 4px;
}

.pricing-card .price-unit {
    font-size: 16px;
    font-weight: 400;
    color: var(--text-dim);
}

.pricing-card .price-note {
    font-size: 14px;
    color: var(--text-dim);
    margin: 8px 0 24px;
}

.pricing-features {
    text-align: left;
    margin: 0 auto 32px;
    max-width: 300px;
    list-style: none;
}

.pricing-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    color: var(--text);
}

.pricing-features li::before {
    content: "\2713";
    color: var(--success);
    font-weight: 700;
    margin-right: 10px;
}

/* ============================================================
   SIDEBAR LAYOUT — Document Pages
   ============================================================ */
.page-with-sidebar {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 0;
    padding: 0 24px;
}

.sidebar {
    width: 230px;
    flex-shrink: 0;
    position: sticky;
    top: calc(var(--navbar-h) + 12px);
    align-self: flex-start;
    max-height: calc(100vh - var(--navbar-h) - 24px);
    overflow-y: auto;
    padding: 28px 0;
    border-right: 1px solid var(--border);
}

.sidebar-group {
    margin-bottom: 4px;
}

.sidebar-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
    padding: 10px 16px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 6px;
    transition: background .15s;
    user-select: none;
}

.sidebar-title:hover {
    background: rgba(7, 193, 96, .06);
}

.sidebar-arrow {
    font-size: 12px;
    color: var(--text-dim);
    transition: transform .2s;
}

.sidebar-links {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
}

.sidebar-group.open .sidebar-links {
    max-height: 500px;
}

.sidebar-group.open .sidebar-arrow {
    transform: rotate(0deg);
}

.sidebar a {
    display: block;
    padding: 8px 16px;
    font-size: 13px;
    color: var(--text-dim);
    border-left: 2px solid transparent;
    transition: all .15s;
    line-height: 1.5;
}

.sidebar a:hover {
    color: var(--text-bright);
    background: rgba(var(--primary-rgb), .04);
}

.sidebar a.active {
    color: var(--primary);
    border-left-color: var(--primary);
    background: rgba(var(--primary-rgb), .06);
    font-weight: 600;
}

/* Content area next to sidebar */
.content-page {
    flex: 1;
    min-width: 0;
    max-width: 900px;
    padding: 40px 24px 80px 40px;
}

/* Standalone content page (no sidebar) */
.content-page-standalone {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 24px 80px;
}

.content-page h1,
.content-page-standalone h1 {
    font-size: 34px;
    font-weight: 800;
    color: var(--text-bright);
    border-bottom: 3px solid var(--primary);
    padding-bottom: 14px;
    margin-bottom: 36px;
    letter-spacing: -.3px;
}

.content-page h2,
.content-page-standalone h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-top: 44px;
    margin-bottom: 18px;
    border-left: 4px solid var(--primary);
    padding-left: 14px;
}

.content-page h3,
.content-page-standalone h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-bright);
    margin-top: 28px;
    margin-bottom: 12px;
}

.content-page p,
.content-page-standalone p { margin-bottom: 16px; }
.content-page ul,
.content-page ol,
.content-page-standalone ul,
.content-page-standalone ol { margin-left: 28px; margin-bottom: 16px; }
.content-page li,
.content-page-standalone li { margin-bottom: 6px; }

/* ============================================================
   CODE BLOCKS
   ============================================================ */
code {
    background: var(--primary-light);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: "Cascadia Code", "Fira Code", "Consolas", monospace;
    color: var(--primary-dark);
    font-size: 13px;
}

pre {
    background: var(--bg-code);
    border: none;
    border-radius: var(--radius);
    padding: 20px 24px;
    overflow-x: auto;
    margin: 18px 0;
    line-height: 1.6;
    box-shadow: var(--shadow-sm);
}

pre code {
    background: transparent;
    padding: 0;
    color: #e2e8f0;
    font-size: 13px;
}

/* ============================================================
   TABLES
   ============================================================ */
.content-page table,
.content-page-standalone table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0 28px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.content-page table th,
.content-page-standalone table th {
    background: var(--primary);
    color: #fff;
    padding: 12px 16px;
    text-align: left;
    font-size: 14px;
    font-weight: 600;
    border: none;
}

.content-page table td,
.content-page-standalone table td {
    padding: 11px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    background: #fff;
}

.content-page table tr:last-child td,
.content-page-standalone table tr:last-child td {
    border-bottom: none;
}

.content-page table tr:hover td,
.content-page-standalone table tr:hover td {
    background: rgba(var(--primary-rgb), .03);
}

/* ============================================================
   ALERTS
   ============================================================ */
.alert {
    padding: 16px 20px;
    margin: 18px 0;
    border-radius: var(--radius-sm);
    border-left: 4px solid;
    font-size: 14px;
    line-height: 1.7;
}

.alert-info    { background: rgba(16,174,255,.07);  border-color: var(--info);    }
.alert-warning { background: rgba(237,106,12,.07);  border-color: var(--warning); }
.alert-success { background: rgba(7,193,96,.07);    border-color: var(--success); }
.alert-danger  { background: rgba(250,81,81,.07);   border-color: var(--danger);  }

.alert strong { color: var(--text-bright); }

/* ============================================================
   BADGES
   ============================================================ */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 99px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .3px;
    vertical-align: middle;
}

.badge-required    { background: var(--danger);  color: #fff; }
.badge-optional    { background: #94A3B8;        color: #fff; }
.badge-http        { background: var(--info);    color: #fff; }
.badge-socks5      { background: #7C3AED;        color: #fff; }
.badge-api         { background: var(--warning); color: #fff; }
.badge-accelerator { background: var(--success); color: #fff; }

/* ============================================================
   FLOW STEPS — Numbered
   ============================================================ */
.flow-step {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 16px 16px 56px;
    margin: 10px 0;
    position: relative;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.flow-step:hover {
    border-color: rgba(var(--primary-rgb), .25);
    box-shadow: var(--shadow-sm);
}

.flow-step .step-num {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
    box-shadow: 0 2px 6px rgba(var(--primary-rgb), .2);
}

/* ============================================================
   FAQ ACCORDION
   ============================================================ */
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-item:hover {
    border-color: rgba(var(--primary-rgb), .2);
}

.faq-item.open {
    border-color: var(--primary);
    box-shadow: var(--shadow-green);
}

.faq-question {
    padding: 18px 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-bright);
    font-weight: 600;
    font-size: 15px;
    transition: background var(--transition);
    user-select: none;
}

.faq-question:hover { background: rgba(var(--primary-rgb), .03); }

.faq-question::after {
    content: "+";
    font-size: 22px;
    color: var(--primary);
    font-weight: 300;
    transition: transform var(--transition);
    flex-shrink: 0;
    margin-left: 12px;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .35s ease;
    padding: 0 20px;
    color: var(--text-dim);
    font-size: 14px;
    line-height: 1.8;
}

.faq-item.open .faq-answer {
    max-height: 600px;
    padding: 0 20px 20px;
}

/* ============================================================
   CHANGELOG — Timeline
   ============================================================ */
.changelog-entry {
    border-left: 2px solid var(--primary);
    padding-left: 24px;
    margin-bottom: 36px;
    position: relative;
}

.changelog-entry::before {
    content: "";
    position: absolute;
    left: -7px;
    top: 6px;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), .15);
}

.changelog-entry .version {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-bright);
}

.changelog-entry .date {
    font-size: 13px;
    color: var(--text-dim);
    margin-bottom: 10px;
}

.changelog-entry ul { margin-left: 20px; }
.changelog-entry li { margin-bottom: 5px; font-size: 14px; }

/* ============================================================
   DOWNLOAD CARD
   ============================================================ */
.download-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 44px;
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.download-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), #34d399);
}

.download-card .version-label {
    font-size: 14px;
    color: var(--text-dim);
    margin-bottom: 4px;
}

.download-card .version-num {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 24px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    background: #1a1a1a;
    text-align: center;
    padding: 36px 24px;
    color: #999;
    font-size: 13px;
}

.footer a {
    color: #ccc;
    transition: color var(--transition);
}

.footer a:hover { color: var(--primary); }

.footer .footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.footer .footer-links a { font-size: 13px; }

.footer .copyright { color: #666; }

/* ============================================================
   RESPONSIVE — 768px
   ============================================================ */
@media (max-width: 768px) {
    .navbar nav {
        display: none;
    }
    .navbar nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--navbar-h);
        left: 0;
        right: 0;
        background: rgba(255,255,255,.96);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border);
        padding: 12px 16px;
        box-shadow: var(--shadow-md);
    }
    .navbar nav.open a { padding: 10px 12px; }

    .menu-toggle { display: block; }

    .hero { padding: 72px 20px 56px; }
    .hero h1 { font-size: 32px; }
    .hero .subtitle { font-size: 16px; }

    .section { padding: 48px 20px; }
    .section-title { font-size: 26px; }

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

    .steps { flex-direction: column; align-items: center; }
    .step-item { max-width: 100%; }
    .step-item:not(:last-child)::after { display: none; }

    /* sidebar collapses */
    .page-with-sidebar { flex-direction: column; }
    .sidebar {
        position: static;
        width: 100%;
        max-height: none;
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding: 16px 0;
        display: flex;
        flex-wrap: wrap;
        gap: 0;
    }
    .sidebar-title { width: 100%; padding-bottom: 8px; }
    .sidebar a {
        border-left: none;
        padding: 6px 12px;
    }
    .sidebar a.active {
        border-left: none;
        background: rgba(var(--primary-rgb), .1);
        border-radius: var(--radius-sm);
    }
    .content-page { padding-left: 20px; padding-right: 20px; }
}

/* ============================================================
   RESPONSIVE — 480px
   ============================================================ */
@media (max-width: 480px) {
    .hero { padding: 56px 16px 44px; }
    .hero h1 { font-size: 26px; }
    .hero .subtitle { font-size: 15px; }

    .btn { padding: 11px 22px; font-size: 14px; }
    .btn-lg { padding: 13px 28px; font-size: 15px; }

    .section { padding: 36px 16px; }
    .section-title { font-size: 22px; }

    .feature-card { padding: 24px; }

    .free-card { padding: 32px 24px; }
    .free-card .price-amount { font-size: 40px; }

    .download-card { padding: 28px 20px; }

    .content-page h1,
    .content-page-standalone h1 { font-size: 26px; }

    .content-page,
    .content-page-standalone { padding: 24px 16px 60px; }

    .footer { padding: 28px 16px; }
}

/* ============================================================
   SECTION DIVIDER
   ============================================================ */
.section-divider {
    border: none;
    border-top: 2px solid #E8F5E9;
    margin: 48px 0;
}