/* ============================================================
   旭宓云穿透 落地页 专属样式  tunnel.css
   ============================================================ */

/* ---------- 变量 ---------- */
:root {
    --ct-purple:   #7209b7;
    --ct-blue:     #4361ee;
    --ct-cyan:     #4cc9f0;
    --ct-grad:     linear-gradient(135deg, #4361ee, #7209b7);
    --ct-dark:     #0a0818;
    --ct-dark2:    #100d2a;
    --ct-dark3:    #1a1464;
    --ct-glass:    rgba(255,255,255,.06);
    --ct-border:   rgba(255,255,255,.1);
    --ct-text:     rgba(255,255,255,.85);
    --ct-muted:    rgba(255,255,255,.5);
    --ct-radius:   14px;
    --ct-shadow:   0 8px 32px rgba(0,0,0,.35);
    --ct-transition: all .28s cubic-bezier(.4,0,.2,1);
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--ct-dark);
    color: var(--ct-text);
    line-height: 1.7;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ---------- 工具 ---------- */
.ct-container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.ct-gradient-text {
    background: var(--ct-grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hide-pc { display: none; }

/* ============================================================
   导航栏
   ============================================================ */
.ct-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 900;
    background: rgba(10,8,24,.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--ct-border);
    transition: var(--ct-transition);
}
.ct-nav.scrolled {
    background: rgba(10,8,24,.97);
    box-shadow: 0 4px 24px rgba(0,0,0,.4);
}
.ct-nav-inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    gap: 32px;
}
.ct-nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.ct-logo-icon {
    width: 36px; height: 36px;
    background: var(--ct-grad);
    border-radius: 9px;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px; font-weight: 900; color: #fff;
    flex-shrink: 0;
}
.ct-logo-text {
    font-size: 16px; font-weight: 700; color: #fff; letter-spacing: .5px;
}
.ct-nav-menu {
    display: flex; align-items: center; gap: 4px;
    flex: 1;
}
.ct-nav-link {
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 14px;
    color: var(--ct-muted);
    transition: var(--ct-transition);
}
.ct-nav-link:hover, .ct-nav-link.active {
    color: #fff;
    background: var(--ct-glass);
}
.ct-nav-actions {
    display: flex; align-items: center; gap: 12px; flex-shrink: 0;
}
.ct-btn-ghost {
    padding: 8px 18px; border-radius: 8px;
    border: 1px solid var(--ct-border);
    font-size: 14px; font-weight: 500;
    color: var(--ct-text);
    transition: var(--ct-transition);
}
.ct-btn-ghost:hover { background: var(--ct-glass); border-color: rgba(255,255,255,.25); }
.ct-btn-solid {
    padding: 8px 20px; border-radius: 8px;
    background: var(--ct-grad);
    font-size: 14px; font-weight: 600; color: #fff;
    box-shadow: 0 4px 16px rgba(67,97,238,.4);
    transition: var(--ct-transition);
    display: inline-block;
}
.ct-btn-solid:hover { opacity: .88; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(67,97,238,.5); color: #fff; }
.ct-btn-lg { padding: 13px 32px; font-size: 1rem; border-radius: 10px; }
.ct-hamburger {
    display: none;
    flex-direction: column; gap: 5px;
    padding: 8px; margin-left: auto;
}
.ct-hamburger span {
    display: block; width: 22px; height: 2px;
    background: var(--ct-text); border-radius: 2px;
    transition: var(--ct-transition);
}
.ct-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.ct-hamburger.open span:nth-child(2) { opacity: 0; }
.ct-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   Hero
   ============================================================ */
.ct-hero {
    min-height: 100vh;
    padding: 140px 0 80px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow: hidden;
    background: var(--ct-dark);
}
.ct-hero-bg {
    position: absolute; inset: 0; pointer-events: none; z-index: 0;
}
/* 光晕球 */
.ct-orb {
    position: absolute; border-radius: 50%;
    filter: blur(80px); opacity: .55;
}
.ct-orb-1 { width: 500px; height: 500px; top: -100px; right: -100px; background: radial-gradient(circle, #7209b7 0%, transparent 70%); }
.ct-orb-2 { width: 400px; height: 400px; bottom: 0; left: -80px; background: radial-gradient(circle, #4361ee 0%, transparent 70%); }
.ct-orb-3 { width: 260px; height: 260px; top: 40%; left: 30%; background: radial-gradient(circle, #4cc9f0 0%, transparent 70%); opacity: .2; }
/* 网格背景 */
.ct-grid-lines {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
    background-size: 60px 60px;
}
.ct-hero .ct-container { position: relative; z-index: 1; text-align: center; }
.ct-hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(67,97,238,.15);
    border: 1px solid rgba(67,97,238,.4);
    color: #a5b4fc;
    font-size: 13px; font-weight: 500;
    padding: 6px 16px; border-radius: 20px;
    margin-bottom: 24px;
}
.ct-badge-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 6px #4ade80;
    animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{ opacity:1; transform:scale(1); } 50%{ opacity:.5; transform:scale(1.4); } }
.ct-hero-title {
    font-size: clamp(2.4rem, 6vw, 4rem);
    font-weight: 900;
    color: #fff;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -.5px;
}
.ct-hero-sub {
    font-size: 1.1rem; color: var(--ct-muted);
    max-width: 540px; margin: 0 auto 40px;
    line-height: 1.8;
}
.ct-hero-btns {
    display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
    margin-bottom: 56px;
}
.ct-cta-primary {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--ct-grad);
    color: #fff; font-size: 1rem; font-weight: 700;
    padding: 15px 36px; border-radius: 32px;
    box-shadow: 0 6px 24px rgba(67,97,238,.5);
    transition: var(--ct-transition);
}
.ct-cta-primary svg { width: 18px; height: 18px; }
.ct-cta-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 32px rgba(67,97,238,.65); color: #fff; }
.ct-cta-secondary {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,.08);
    border: 1.5px solid var(--ct-border);
    color: #fff; font-size: 1rem; font-weight: 500;
    padding: 14px 32px; border-radius: 32px;
    transition: var(--ct-transition);
}
.ct-cta-secondary svg { width: 16px; height: 16px; }
.ct-cta-secondary:hover { background: rgba(255,255,255,.15); border-color: rgba(255,255,255,.3); color: #fff; }
/* 数字统计 */
.ct-hero-stats {
    display: flex; align-items: center; justify-content: center;
    gap: 0; flex-wrap: wrap;
    background: var(--ct-glass);
    border: 1px solid var(--ct-border);
    border-radius: 16px;
    padding: 20px 32px;
    max-width: 640px; margin: 0 auto;
    backdrop-filter: blur(8px);
}
.ct-stat { text-align: center; padding: 8px 28px; }
.ct-stat strong { display: block; font-size: 2rem; font-weight: 800; color: #fff; line-height: 1; }
.ct-stat span { font-size: 12px; color: var(--ct-muted); margin-top: 4px; display: block; }
.ct-stat-divider { width: 1px; height: 40px; background: var(--ct-border); }
/* 终端演示 */
.ct-terminal-wrap {
    position: relative; z-index: 1;
    margin-top: 64px;
    width: 100%; max-width: 560px;
    padding: 0 24px;
}
.ct-terminal {
    background: #0d1117;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 24px 64px rgba(0,0,0,.5);
}
.ct-terminal-bar {
    background: #1c1f26;
    padding: 10px 16px;
    display: flex; align-items: center; gap: 8px;
}
.tb-dot { width: 12px; height: 12px; border-radius: 50%; }
.tb-red    { background: #ff5f57; }
.tb-yellow { background: #ffbd2e; }
.tb-green  { background: #28c840; }
.tb-title  { flex: 1; text-align: center; font-size: 12px; color: rgba(255,255,255,.4); }
.ct-terminal-body { padding: 16px 20px; font-family: 'Menlo','Consolas','Monaco',monospace; font-size: 13px; line-height: 1.8; }
.tl { display: flex; gap: 8px; }
.tl-prompt { color: #4ade80; }
.tl-cmd    { color: #e2e8f0; }
.tl-out    { color: rgba(255,255,255,.45); padding-left: 16px; }
.ct-typing::after { content: '|'; animation: blink .8s infinite; }
@keyframes blink { 0%,100%{ opacity:1; } 50%{ opacity:0; } }

/* ============================================================
   品牌信任带
   ============================================================ */
.ct-trust-bar {
    background: var(--ct-dark2);
    border-top: 1px solid var(--ct-border);
    border-bottom: 1px solid var(--ct-border);
    padding: 20px 0;
}
.ct-trust-bar .ct-container { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.ct-trust-label { font-size: 12px; color: var(--ct-muted); flex-shrink: 0; white-space: nowrap; }
.ct-trust-items { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; flex: 1; }
.ct-trust-item {
    display: flex; align-items: center; gap: 6px;
    font-size: 13px; color: var(--ct-muted);
    background: var(--ct-glass);
    border: 1px solid var(--ct-border);
    border-radius: 20px; padding: 5px 14px;
    transition: var(--ct-transition);
}
.ct-trust-item:hover { color: #fff; border-color: rgba(255,255,255,.25); }
.ct-trust-item svg { width: 15px; height: 15px; }

/* ============================================================
   通用 Section Header
   ============================================================ */
.ct-section-head { text-align: center; margin-bottom: 56px; }
.ct-section-tag {
    display: inline-block;
    background: rgba(67,97,238,.15);
    border: 1px solid rgba(67,97,238,.35);
    color: #a5b4fc;
    font-size: 11px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase;
    padding: 4px 14px; border-radius: 20px; margin-bottom: 16px;
}
.ct-section-title {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800; color: #fff;
    margin-bottom: 14px; line-height: 1.2;
}
.ct-section-sub {
    font-size: 1rem; color: var(--ct-muted); max-width: 540px; margin: 0 auto;
}

/* ============================================================
   功能特性
   ============================================================ */
.ct-features {
    padding: 100px 0;
    background: var(--ct-dark);
}
.ct-features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.ct-feat-card {
    background: var(--ct-glass);
    border: 1px solid var(--ct-border);
    border-radius: var(--ct-radius);
    padding: 28px 24px;
    transition: var(--ct-transition);
    backdrop-filter: blur(6px);
}
.ct-feat-card:hover { transform: translateY(-6px); background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.2); }
.ct-feat-wide { grid-column: span 2; display: flex; flex-direction: column; }
.ct-feat-icon {
    width: 48px; height: 48px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 16px;
}
.ct-feat-icon svg { width: 22px; height: 22px; }
.fi-1 { background: rgba(250,204,21,.15); color: #facc15; }
.fi-2 { background: rgba(74,222,128,.15); color: #4ade80; }
.fi-3 { background: rgba(96,165,250,.15); color: #60a5fa; }
.fi-4 { background: rgba(248,113,113,.15); color: #f87171; }
.fi-5 { background: rgba(192,132,252,.15); color: #c084fc; }
.fi-6 { background: rgba(251,146,60,.15); color: #fb923c; }
.fi-7 { background: rgba(52,211,153,.15); color: #34d399; }
.ct-feat-card h3 { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
.ct-feat-card p  { font-size: .875rem; color: var(--ct-muted); line-height: 1.65; flex: 1; }
.ct-feat-metric  { display: flex; align-items: baseline; gap: 8px; margin-top: 20px; }
.fm-val   { font-size: 2rem; font-weight: 800; background: var(--ct-grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.fm-label { font-size: .8rem; color: var(--ct-muted); }
.ct-feat-cta-card {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    text-align: center; gap: 20px;
    background: linear-gradient(135deg, rgba(67,97,238,.2), rgba(114,9,183,.2));
    border-color: rgba(67,97,238,.4);
}
.ct-feat-cta-card p { font-size: 1rem; color: rgba(255,255,255,.7); line-height: 1.6; }

/* ============================================================
   使用流程
   ============================================================ */
.ct-how {
    padding: 100px 0;
    background: var(--ct-dark2);
}
.ct-how-steps {
    display: flex; align-items: stretch; gap: 0;
    margin-bottom: 60px;
}
.ct-how-step {
    flex: 1;
    background: var(--ct-glass);
    border: 1px solid var(--ct-border);
    border-radius: var(--ct-radius);
    padding: 32px 28px;
    position: relative;
    transition: var(--ct-transition);
    display: flex; flex-direction: column; gap: 12px;
}
.ct-how-step:hover { transform: translateY(-4px); border-color: rgba(255,255,255,.22); }
.ct-step-num {
    font-size: 3rem; font-weight: 900;
    background: var(--ct-grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    line-height: 1;
}
.ct-step-body h3 { font-size: 1.1rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
.ct-step-body p  { font-size: .875rem; color: var(--ct-muted); line-height: 1.65; }
.ct-step-link {
    display: inline-block; margin-top: 12px;
    font-size: .8rem; font-weight: 600;
    color: #a5b4fc;
    transition: gap .2s;
}
.ct-step-link:hover { color: #c4b5fd; }
.ct-step-icon {
    position: absolute; bottom: 20px; right: 20px;
    width: 52px; height: 52px;
    background: var(--ct-glass); border-radius: 12px;
    border: 1px solid var(--ct-border);
    display: flex; align-items: center; justify-content: center;
    color: var(--ct-muted);
}
.ct-step-icon svg { width: 26px; height: 26px; }
.ct-how-arrow {
    display: flex; align-items: center;
    padding: 0 16px; color: var(--ct-muted);
    flex-shrink: 0;
}
.ct-how-arrow svg { width: 20px; height: 20px; }
/* 代码演示 */
.ct-code-demo {
    background: #0d1117;
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--ct-radius);
    overflow: hidden;
    box-shadow: var(--ct-shadow);
}
.ct-code-tabs {
    display: flex; background: #1c1f26;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.ct-code-tab {
    padding: 10px 20px;
    font-size: 13px; color: rgba(255,255,255,.4);
    border-bottom: 2px solid transparent;
    transition: var(--ct-transition);
}
.ct-code-tab.active, .ct-code-tab:hover {
    color: #fff;
    border-bottom-color: #4361ee;
}
.ct-code-panel { display: none; padding: 24px 28px; }
.ct-code-panel.active { display: block; }
.ct-code-panel pre { margin: 0; overflow-x: auto; }
.ct-code-panel code {
    font-family: 'Menlo','Consolas','Monaco',monospace;
    font-size: 13px; line-height: 1.9;
    color: #e2e8f0;
    display: block;
}
.cc-comment { color: rgba(255,255,255,.3); }
.cc-prompt  { color: #4ade80; }
.cc-cmd     { color: #e2e8f0; }
.cc-val     { color: #fbbf24; }
.cc-out     { color: rgba(255,255,255,.45); }
.cc-success { color: #4ade80; }

/* ============================================================
   价格套餐
   ============================================================ */
.ct-plans {
    padding: 100px 0;
    background: var(--ct-dark);
}
.ct-plans-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 32px;
}
.ct-plan-card {
    background: var(--ct-glass);
    border: 1px solid var(--ct-border);
    border-radius: 18px;
    padding: 36px 32px;
    position: relative;
    transition: var(--ct-transition);
}
.ct-plan-card:hover { transform: translateY(-6px); }
.ct-plan-popular {
    border-color: rgba(67,97,238,.6);
    background: linear-gradient(160deg, rgba(67,97,238,.12), rgba(114,9,183,.1));
    box-shadow: 0 0 0 1px rgba(67,97,238,.3), 0 20px 48px rgba(67,97,238,.2);
}
.ct-plan-badge {
    position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
    background: var(--ct-grad); color: #fff;
    font-size: 11px; font-weight: 700; letter-spacing: 1px;
    padding: 4px 16px; border-radius: 20px;
    white-space: nowrap;
}
.ct-plan-name {
    font-size: .875rem; font-weight: 600;
    color: var(--ct-muted); margin-bottom: 16px;
    text-transform: uppercase; letter-spacing: 1px;
}
.ct-plan-price {
    display: flex; align-items: baseline; gap: 2px;
    margin-bottom: 28px;
}
.pp-currency { font-size: 1.2rem; font-weight: 700; color: #fff; }
.pp-num  { font-size: 3rem; font-weight: 900; color: #fff; line-height: 1; }
.pp-cycle{ font-size: .875rem; color: var(--ct-muted); margin-left: 4px; }
.ct-plan-features { display: flex; flex-direction: column; gap: 12px; margin-bottom: 32px; }
.ct-plan-features li { font-size: .9rem; color: var(--ct-text); display: flex; align-items: center; gap: 10px; }
.pf-yes { color: #4ade80; font-weight: 700; }
.pf-no  { color: rgba(255,255,255,.2); }
.ct-plan-btn {
    display: block; text-align: center;
    padding: 13px; border-radius: 10px;
    font-size: .95rem; font-weight: 600;
    transition: var(--ct-transition);
}
.ct-plan-btn-solid {
    background: var(--ct-grad); color: #fff;
    box-shadow: 0 4px 16px rgba(67,97,238,.4);
}
.ct-plan-btn-solid:hover { opacity: .88; transform: translateY(-2px); color: #fff; }
.ct-plan-btn-ghost {
    border: 1.5px solid var(--ct-border); color: var(--ct-text);
}
.ct-plan-btn-ghost:hover { background: var(--ct-glass); border-color: rgba(255,255,255,.25); }
.ct-plans-note { text-align: center; font-size: .85rem; color: var(--ct-muted); }
.ct-plans-note a { color: #a5b4fc; }
.ct-plans-note a:hover { text-decoration: underline; }

/* ============================================================
   常见问题
   ============================================================ */
.ct-faq {
    padding: 100px 0;
    background: var(--ct-dark2);
}
.ct-faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.ct-faq-item {
    background: var(--ct-glass);
    border: 1px solid var(--ct-border);
    border-radius: var(--ct-radius);
    overflow: hidden;
    transition: border-color .25s;
}
.ct-faq-item.open { border-color: rgba(67,97,238,.5); }
.ct-faq-q {
    width: 100%; text-align: left;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 20px 24px;
    font-size: .95rem; font-weight: 600; color: #fff;
    transition: var(--ct-transition);
}
.ct-faq-q:hover { color: #c4b5fd; }
.faq-arrow { width: 18px; height: 18px; flex-shrink: 0; transition: transform .3s; color: var(--ct-muted); }
.ct-faq-item.open .faq-arrow { transform: rotate(180deg); color: #a5b4fc; }
.ct-faq-a {
    max-height: 0; overflow: hidden;
    transition: max-height .35s cubic-bezier(.4,0,.2,1), padding .3s;
}
.ct-faq-a p {
    padding: 0 24px 20px;
    font-size: .9rem; color: var(--ct-muted); line-height: 1.75;
}
.ct-faq-item.open .ct-faq-a { max-height: 300px; }

/* ============================================================
   底部 CTA
   ============================================================ */
.ct-cta-bottom {
    padding: 100px 0;
    background: linear-gradient(160deg, #0f0c29, #1a1464 60%, #0f0c29);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.ct-orb-cta1 { width: 380px; height: 380px; top: -80px; right: -60px; background: radial-gradient(circle, rgba(114,9,183,.4) 0%, transparent 70%); }
.ct-orb-cta2 { width: 300px; height: 300px; bottom: -60px; left: -40px; background: radial-gradient(circle, rgba(67,97,238,.35) 0%, transparent 70%); }
.ct-cta-bottom .ct-container { position: relative; z-index: 1; }
.ct-cta-bottom h2 {
    font-size: clamp(1.8rem, 5vw, 3rem); font-weight: 900; color: #fff; margin-bottom: 14px;
}
.ct-cta-bottom p { font-size: 1.05rem; color: var(--ct-muted); margin-bottom: 40px; }
.ct-cta-bottom-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ============================================================
   页脚
   ============================================================ */
.ct-footer {
    background: #060412;
    border-top: 1px solid var(--ct-border);
    padding: 64px 0 0;
}
.ct-footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
}
.ct-footer-brand .ct-footer-logo {
    display: flex; align-items: center; gap: 10px;
    margin-bottom: 16px;
}
.ct-footer-brand .ct-footer-logo span { font-size: 16px; font-weight: 700; color: #fff; }
.ct-footer-brand p { font-size: .875rem; color: var(--ct-muted); line-height: 1.75; }
.ct-footer-col h4 { font-size: .875rem; font-weight: 700; color: #fff; margin-bottom: 16px; letter-spacing: .5px; }
.ct-footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.ct-footer-col a { font-size: .85rem; color: var(--ct-muted); transition: color .2s; }
.ct-footer-col a:hover { color: #fff; }
.ct-footer-contact li { font-size: .85rem; color: var(--ct-muted); display: flex; align-items: flex-start; gap: 8px; }
.ct-footer-bottom {
    border-top: 1px solid var(--ct-border);
    padding: 20px 0;
    text-align: center;
    font-size: .8rem; color: rgba(255,255,255,.3);
}
.ct-footer-bottom a { color: rgba(255,255,255,.4); }
.ct-footer-bottom a:hover { color: #fff; }

/* ============================================================
   滚动进场动画
   ============================================================ */
.ct-reveal {
    opacity: 0; transform: translateY(30px);
    transition: opacity .7s ease, transform .7s ease;
}
.ct-reveal.visible { opacity: 1; transform: translateY(0); }
.ct-reveal-delay-1 { transition-delay: .1s; }
.ct-reveal-delay-2 { transition-delay: .2s; }
.ct-reveal-delay-3 { transition-delay: .3s; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
    .ct-features-grid { grid-template-columns: repeat(2, 1fr); }
    .ct-feat-wide { grid-column: span 2; }
    .ct-plans-grid { grid-template-columns: 1fr 1fr; }
    .ct-plans-grid .ct-plan-card:last-child { grid-column: span 2; max-width: 420px; justify-self: center; width: 100%; }
    .ct-footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .ct-nav-menu, .ct-nav-actions { display: none; }
    .ct-nav-menu.open {
        display: flex; flex-direction: column;
        position: fixed; top: 64px; left: 0; right: 0;
        background: rgba(10,8,24,.97);
        padding: 16px 24px 24px;
        border-bottom: 1px solid var(--ct-border);
        gap: 4px;
    }
    .ct-nav-actions.open {
        display: flex; flex-direction: column;
        position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    }
    .ct-hamburger { display: flex; }
    .ct-nav-menu.open + .ct-nav-actions {
        display: flex; flex-direction: row; justify-content: center; gap: 12px;
        position: static; padding: 12px 0 4px;
        background: transparent; border: none;
    }
    .ct-hero { padding: 120px 0 60px; }
    .ct-hero-stats { flex-direction: column; gap: 0; }
    .ct-stat-divider { width: 80px; height: 1px; }
    .ct-stat { padding: 12px 0; }
    .ct-how-steps { flex-direction: column; }
    .ct-how-arrow { justify-content: center; padding: 8px 0; transform: rotate(90deg); }
    .ct-features-grid { grid-template-columns: 1fr; }
    .ct-feat-wide { grid-column: span 1; }
    .ct-plans-grid { grid-template-columns: 1fr; }
    .ct-plans-grid .ct-plan-card:last-child { grid-column: span 1; max-width: 100%; }
    .ct-footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
    .hide-pc { display: block; }
    .ct-trust-bar .ct-container { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
    .ct-footer-grid { grid-template-columns: 1fr; }
    .ct-hero-btns, .ct-cta-bottom-btns { flex-direction: column; align-items: center; }
    .ct-cta-primary, .ct-cta-secondary { width: 100%; max-width: 300px; justify-content: center; }
    .ct-terminal-wrap { padding: 0 16px; }
}