/* ==========================================================================
   MyWireGuard — Ogani-inspired theme
   Design language adapted from the "Ogani" template (Colorlib):
   - Font: Cairo
   - Primary accent: green #7fad39
   - Top-bar header, uppercase nav, section titles with underline accent,
     card-based content, light footer.
   ========================================================================== */

:root {
    --green: #7fad39;
    --green-dark: #6a9430;
    --green-tint: #f4f8ec;
    --heading: #252525;
    --heading-strong: #1c1c1c;
    --body: #6f6f6f;
    --line: #ebebeb;
    --topbar-bg: #f5f5f5;
    --footer-bg: #f3f6fa;
    --white: #ffffff;
    --page-bg: #ffffff;
    --font: 'Cairo', '微軟正黑體', 'Microsoft JhengHei', -apple-system,
        BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.08);
    --container: 1200px;
}

/* ------- Reset / base ------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font);
    line-height: 1.8;
    color: var(--body);
    background: var(--page-bg);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 .5em;
    color: var(--heading-strong);
    font-family: var(--font);
    font-weight: 700;
    line-height: 1.25;
}

p { margin: 0 0 15px; }

a { color: var(--green); text-decoration: none; transition: color .3s; }
a:hover { color: var(--green-dark); }

img { max-width: 100%; }

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

/* ------- Buttons ------- */
.primary-btn,
.button,
button.button {
    display: inline-block;
    background: var(--green);
    color: #fff;
    border: none;
    cursor: pointer;
    font-family: var(--font);
    font-weight: 700;
    font-size: 15px;
    padding: 13px 32px;
    border-radius: 4px;
    text-decoration: none;
    transition: all .3s;
    line-height: 1.4;
}
.primary-btn {
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 14px;
}
.primary-btn:hover,
.button:hover,
button.button:hover {
    background: var(--green-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(127, 173, 57, .35);
}

.btn-outline {
    display: inline-block;
    background: transparent;
    color: var(--green);
    border: 2px solid var(--green);
    font-weight: 700;
    padding: 11px 30px;
    border-radius: 4px;
    transition: all .3s;
}
.btn-outline:hover { background: var(--green); color: #fff; }

/* ==========================================================================
   Header
   ========================================================================== */
.top-bar {
    background: var(--topbar-bg);
    font-size: 14px;
    color: var(--heading-strong);
}
.top-bar__inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}
.top-bar__left,
.top-bar__right { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.top-bar__item { position: relative; display: inline-flex; align-items: center; gap: 7px; }
.top-bar__item + .top-bar__item::before {
    content: "";
    position: absolute;
    left: -15px;
    top: 50%;
    transform: translateY(-50%);
    height: 16px;
    width: 1px;
    background: rgba(0, 0, 0, .12);
}
.top-bar a { color: var(--heading-strong); }
.top-bar a:hover { color: var(--green); }

.site-header {
    background: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .06);
    position: sticky;
    top: 0;
    z-index: 200;
}
.site-header__inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.site-logo { display: inline-flex; align-items: center; padding: 14px 0; }
.site-logo img { max-height: 42px; width: auto; display: block; }

.main-nav { display: flex; align-items: center; }
.main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 34px;
}
.main-nav > ul > li > a {
    display: block;
    padding: 28px 0;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--heading);
}
.main-nav > ul > li > a:hover,
.main-nav > ul > li.active > a { color: var(--green); }

.header-actions { display: flex; align-items: center; gap: 14px; }
.nav-cta {
    display: inline-block;
    background: var(--green);
    color: #fff !important;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 11px 24px;
    border-radius: 4px;
    white-space: nowrap;
    transition: all .3s;
}
.nav-cta:hover {
    background: var(--green-dark);
    color: #fff !important;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(127, 173, 57, .35);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--heading);
    cursor: pointer;
    padding: 8px;
    line-height: 1;
}

/* ==========================================================================
   Hero (homepage)
   ========================================================================== */
.hero {
    background:
        radial-gradient(800px 380px at 82% -10%, rgba(255, 255, 255, .18), transparent 60%),
        radial-gradient(700px 400px at 5% 115%, rgba(0, 0, 0, .10), transparent 60%),
        linear-gradient(135deg, var(--green), var(--green-dark));
    text-align: center;
    padding: 90px 20px 80px;
}
.hero__inner { max-width: 820px; margin: 0 auto; }
.hero__eyebrow {
    display: inline-block;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .85);
    margin-bottom: 14px;
}
.hero h1,
.hero__title {
    font-size: 3em;
    color: #ffffff;
    margin: 0 0 20px;
    line-height: 1.2;
}
.hero p {
    font-size: 1.15em;
    color: rgba(255, 255, 255, .92);
    margin: 0 auto 32px;
    max-width: 680px;
}
/* CTA on the green banner: white button with green text */
.hero .primary-btn {
    background: #ffffff;
    color: var(--green-dark);
}
.hero .primary-btn:hover {
    background: #f3f3f3;
    color: var(--green-dark);
    box-shadow: 0 10px 24px rgba(0, 0, 0, .18);
}
.hero__badges {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px 30px;
    margin-top: 34px;
    color: #ffffff;
    font-weight: 600;
    font-size: .95em;
}
.hero__badges span { display: inline-flex; align-items: center; gap: 8px; }

/* ==========================================================================
   Breadcrumb hero (inner pages)
   ========================================================================== */
.breadcrumb-hero {
    background:
        radial-gradient(700px 300px at 85% 0%, rgba(255, 255, 255, .12), transparent 60%),
        linear-gradient(135deg, var(--green), var(--green-dark));
    color: #fff;
    text-align: center;
    padding: 60px 20px;
}
.breadcrumb-hero h1 {
    color: #fff;
    font-size: 2.6em;
    margin: 0 0 10px;
}
.breadcrumb-hero p { color: rgba(255, 255, 255, .9); margin: 0 0 6px; font-size: 1.05em; }
.breadcrumb-hero__crumbs { font-size: .95em; color: rgba(255, 255, 255, .85); }
.breadcrumb-hero__crumbs a { color: #fff; font-weight: 700; }
.breadcrumb-hero__crumbs a:hover { color: rgba(255, 255, 255, .8); }
.breadcrumb-hero__crumbs span { margin: 0 8px; opacity: .7; }

/* ==========================================================================
   Sections & titles
   ========================================================================== */
.section { padding: 80px 0; }
.section--tint { background: #f8f9fa; }

.section-title { text-align: center; margin-bottom: 55px; }
.section-title h2 {
    position: relative;
    display: inline-block;
    color: var(--heading-strong);
    font-weight: 700;
    font-size: 2.4em;
    padding-bottom: 20px;
    margin: 0;
}
.section-title h2::after {
    content: "";
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
    height: 4px;
    width: 80px;
    background: var(--green);
    border-radius: 2px;
}
.section-title p { max-width: 640px; margin: 16px auto 0; color: var(--body); }

/* ==========================================================================
   Cards / grids  (shared + legacy page classes)
   ========================================================================== */
.card,
.feature-card,
.download-card,
.region-card,
.step-card,
.contact-section,
.policy-content,
.tutorial-section,
.faq-item {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
}

/* Homepage: core advantages (service row) */
.advantages-section { padding: 80px 0; }
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}
.advantage-item {
    text-align: center;
    padding: 30px 20px;
    border-radius: 10px;
    transition: all .3s;
}
.advantage-item:hover { background: var(--green-tint); transform: translateY(-4px); }
.advantage-item .icon { font-size: 3.4em; line-height: 1; margin-bottom: 12px; }
.advantage-item h3 { font-size: 1.35em; color: var(--heading-strong); margin-bottom: 10px; }
.advantage-item p { font-size: .97em; }

/* Homepage: feature cards */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.feature-card { padding: 34px 28px; text-align: center; transition: all .3s; }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--green); }
.feature-card .icon { font-size: 2.8em; margin-bottom: 16px; line-height: 1; }
.feature-card h3 { font-size: 1.25em; color: var(--heading-strong); margin-bottom: 10px; }
.feature-card p { font-size: .97em; }

/* Homepage: trial region cards */
.trial-section { padding: 80px 0; background: #f8f9fa; text-align: center; }
.trial-section .regions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin: 34px auto 0;
    text-align: left;
}
.region-card { padding: 24px; transition: all .3s; }
.region-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.region-card h3 {
    font-size: 1.2em;
    margin: 0 0 12px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--green);
    color: var(--heading-strong);
}
.region-card ul { list-style: none; padding: 0; margin: 0; }
.region-card li { margin-bottom: 8px; font-size: .93em; color: var(--body); }

/* Downloads */
.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}
.download-card { padding: 34px 26px; text-align: center; transition: all .3s; }
.download-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--green); }
.download-card .icon { font-size: 3.6em; margin-bottom: 18px; line-height: 1; }
.download-card h3 { margin: 0 0 12px; color: var(--heading-strong); }
.download-card p { color: var(--body); margin-bottom: 24px; }

/* Tutorials */
.tutorial-section { padding: 34px; margin-bottom: 30px; }
.tutorial-section h3 {
    font-size: 1.7em;
    color: var(--heading-strong);
    margin-top: 0;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--green);
}
.tutorial-section h4 { font-size: 1.25em; color: var(--heading-strong); margin-top: 24px; }
.highlight {
    background: var(--green-tint);
    border-left: 4px solid var(--green);
    padding: 16px 18px;
    margin: 22px 0;
    border-radius: 6px;
}
.highlight p { margin: 0; color: #4a5a2f; }
.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 22px;
    margin-top: 26px;
}
.step-card { padding: 26px 20px; text-align: center; transition: all .3s; }
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.step-icon { font-size: 3em; margin-bottom: 12px; line-height: 1; }
.step-card h4 { margin: 0 0 10px; font-size: 1.1em; color: var(--heading-strong); }
.step-card p { font-size: .93em; margin: 0; }
code {
    background: #f0f2ec;
    color: #5a7a24;
    padding: 2px 7px;
    border-radius: 4px;
    font-family: Consolas, Monaco, monospace;
    font-size: .92em;
}
pre {
    background: #212529;
    color: #fff;
    padding: 16px 18px;
    border-radius: 8px;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-x: auto;
}
pre code { background: none; color: #e6e6e6; padding: 0; }

/* Support / FAQ */
.intro-text {
    text-align: center;
    font-size: 1.1em;
    color: var(--body);
    max-width: 720px;
    margin: 0 auto 50px;
}
.faq-section { margin-bottom: 44px; }
.faq-section h3 {
    font-size: 1.6em;
    color: var(--heading-strong);
    padding-bottom: 12px;
    border-bottom: 2px solid var(--green);
    margin-bottom: 22px;
}
.faq-item { margin-bottom: 15px; overflow: hidden; }
.faq-question {
    font-weight: 700;
    font-size: 1.12em;
    color: var(--heading-strong);
    padding: 20px 22px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}
.faq-question::after {
    content: '＋';
    font-size: 1.4em;
    color: var(--green);
    transition: transform .3s;
    flex-shrink: 0;
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .5s ease, padding .5s ease;
    padding: 0 22px;
}
.faq-answer p, .faq-answer ul, .faq-answer ol { margin-top: 0; }
.faq-answer a { color: var(--green); font-weight: 600; }
.faq-item.active .faq-answer { max-height: 900px; padding: 0 22px 22px; }
.faq-item.active .faq-question::after { transform: rotate(45deg); }

.support-cta { padding: 40px 30px; text-align: center; }
.support-cta h3 { color: var(--heading-strong); margin-top: 0; }

/* Contact */
.contact-section { text-align: center; padding: 44px 30px; }
.contact-section h3 { font-size: 1.5em; margin-top: 0; color: var(--heading-strong); }
.contact-section a[href^="mailto"] { color: var(--green); font-weight: 700; font-size: 1.2em; }

/* Terms / Refund policy text pages */
.policy-content { padding: 34px; }
.policy-content h3 {
    margin-top: 0;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--green);
    color: var(--heading-strong);
}
.legal-body h2 { color: var(--green-dark); margin-top: 32px; font-size: 1.4em; }
.last-updated { text-align: center; color: #888; font-style: italic; margin-bottom: 30px; }

/* Homepage inline pricing summary block */
.home-pricing { padding: 20px 0 90px; }
.home-pricing__box {
    text-align: center;
    padding: 46px 24px;
    background: var(--green-tint);
    border: 1px solid #e4eecf;
    border-radius: 16px;
    max-width: 720px;
    margin: 0 auto;
}
.home-pricing__row {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
    margin-bottom: 26px;
}
.home-pricing__item .plan-icon { font-size: 2.5em; line-height: 1; }
.home-pricing__item .plan-name { font-weight: 700; font-size: 1.1em; margin: 8px 0 4px; color: var(--heading-strong); }
.home-pricing__item .plan-price { color: var(--green-dark); font-size: 1.5em; font-weight: 700; }
.home-pricing__item .plan-price small { font-size: .5em; color: var(--body); font-weight: 600; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background: var(--footer-bg);
    padding: 70px 0 0;
    color: var(--heading-strong);
    margin-top: 0;
}
.site-footer__grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 20px;
}
.site-footer h6 {
    font-size: 1.05em;
    font-weight: 700;
    color: var(--heading-strong);
    margin: 0 0 18px;
}
.site-footer__about img { max-height: 44px; margin-bottom: 16px; }
.site-footer__about p { font-size: .95em; color: var(--body); margin-bottom: 14px; }
.site-footer__about .contact-line { font-size: .95em; color: var(--heading-strong); }
.site-footer__about .contact-line a { color: var(--green-dark); font-weight: 600; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer ul li { margin-bottom: 10px; }
.site-footer ul li a { color: var(--heading-strong); font-size: .95em; }
.site-footer ul li a:hover { color: var(--green); padding-left: 4px; }
.site-footer__copyright {
    border-top: 1px solid #e2e6ec;
    margin-top: 20px;
    padding: 22px 0;
    text-align: center;
    font-size: .9em;
    color: var(--body);
}
.site-footer__copyright a { color: var(--green-dark); font-weight: 600; margin: 0 6px; }
.site-footer__copyright .trademark { display: block; margin-top: 6px; font-size: .92em; color: #9aa0a6; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 992px) {
    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        box-shadow: 0 12px 24px rgba(0, 0, 0, .1);
        border-top: 1px solid var(--line);
        display: none;
    }
    .site-header.nav-open .main-nav { display: block; }
    .main-nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: 6px 0; }
    .main-nav > ul > li > a { padding: 13px 24px; border-bottom: 1px solid #f2f2f2; }
    .nav-toggle { display: inline-block; order: 3; }
    .header-actions .nav-cta { padding: 9px 18px; }
    .site-header__inner { position: relative; }
}

@media (max-width: 768px) {
    .top-bar { display: none; }
    .hero { padding: 64px 20px 56px; }
    .hero h1, .hero__title { font-size: 2.1em; }
    .section, .advantages-section, .trial-section { padding: 56px 0; }
    .section-title h2 { font-size: 1.9em; }
    .breadcrumb-hero { padding: 44px 20px; }
    .breadcrumb-hero h1 { font-size: 2em; }
    .site-footer__grid { grid-template-columns: 1fr; gap: 30px; }
    .home-pricing__row { gap: 30px; }
}

@media (max-width: 480px) {
    .header-actions .nav-cta { font-size: 12px; padding: 8px 12px; letter-spacing: .5px; }
    .site-logo img { max-height: 34px; }
}