/* ===== 趣柠视频引擎官网 · 共享设计系统（宽屏） ===== */
:root {
  /* 🔴 品牌琥珀金（09-20 提亮）：旧值 #d4a017/#b88a12 偏暗发土（sRGB 亮度低、饱和度闷），
     用户反馈"琥珀黄太暗，适当调鲜亮一点"。新色板整体向高饱和暖金偏移：
     色相 39°→43°，亮度每档 +9~14%，既保持金色质感又不刺眼。改色只动这 5 个变量即可全站生效。 */
  --c-primary: #f0b429;
  --c-primary-light: #ffd15c;
  --c-primary-dark: #d18f0a;
  --c-accent: #ffb52e;
  --c-bg: #0b1020;
  --c-bg-2: #141a33;
  --c-surface: rgba(255,255,255,.055);
  --c-surface-hi: rgba(255,255,255,.09);
  --c-line: rgba(255,255,255,.10);
  --c-text: #e8ecf5;
  --c-text-2: #a3aec6;
  --c-text-3: #7d879e;
  --c-success: #10b981;
  --c-error: #ef4444;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --maxw: 1180px;
  --r-md: .5rem; --r-lg: .75rem; --r-xl: 1rem; --r-2xl: 1.5rem; --r-full: 9999px;
  --sh: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
  --sh-lg: 0 18px 40px -12px rgba(0,0,0,.55);
  --d-fast: 150ms; --d-normal: 300ms; --e-out: cubic-bezier(0,0,.2,1);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: var(--font); font-size: 16px; color: var(--c-text);
  background: var(--c-bg); line-height: 1.75; -webkit-font-smoothing: antialiased;
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(58% 42% at 50% 0%, rgba(240,180,41,.34) 0%, rgba(240,180,41,0) 72%),
    radial-gradient(36% 26% at 88% 14%, rgba(255,181,46,.14) 0%, rgba(255,181,46,0) 70%),
    linear-gradient(180deg, var(--c-bg) 0%, var(--c-bg-2) 100%);
}
a { color: var(--c-primary-light); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ===== 导航 ===== */
.nav { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(12px); background: rgba(11,16,32,.82); border-bottom: 1px solid var(--c-line); }
.nav-in { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; height: 64px; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: #fff; font-weight: 800; font-size: 17px; letter-spacing: -.01em; }
.brand:hover { text-decoration: none; }
.brand .mark { width: 30px; height: 30px; display: block; flex: none; }
.brand .mark img { display: block; width: 30px; height: 30px; filter: drop-shadow(0 4px 10px rgba(240,180,41,.5)); }
.brand small { font-weight: 500; font-size: 11.5px; color: var(--c-text-3); }
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-links a { color: var(--c-text-2); font-size: 14.5px; font-weight: 500; padding: 7px 13px; border-radius: var(--r-md); transition: all var(--d-fast) var(--e-out); }
.nav-links a:hover { color: #fff; background: var(--c-surface-hi); text-decoration: none; }
.nav-links a.on { color: #fff; background: rgba(240,180,41,.3); }
.nav-cta { margin-left: 12px; }
@media (max-width: 860px) {
  .nav-in { height: auto; padding: 12px 16px; flex-wrap: wrap; gap: 10px; }
  .nav-links { margin-left: 0; flex-wrap: wrap; width: 100%; }
  .nav-cta { margin-left: 0; }
}

/* ===== 按钮 ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 20px; border-radius: var(--r-md); font-size: 15px; font-weight: 600; border: none; cursor: pointer; font-family: inherit; transition: all var(--d-fast) var(--e-out); text-decoration: none; }
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:disabled { opacity: .6; cursor: not-allowed; transform: none; }
.btn-primary { color: #fff; background: linear-gradient(135deg, var(--c-primary-light), var(--c-primary-dark)); box-shadow: 0 8px 20px -8px rgba(240,180,41,.7); }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { color: var(--c-text); background: var(--c-surface); border: 1px solid var(--c-line); }
.btn-ghost:hover { background: var(--c-surface-hi); }
.btn-success { color: #fff; background: var(--c-success); box-shadow: 0 8px 20px -10px rgba(16,185,129,.9); }
/* 按钮尺寸统一：btn-sm 用于「获取验证码」等行内并排按钮，高度与 .field 严格对齐（40px），
   flex:none 防止被压缩；配合 .row 的 margin-bottom 与下方按钮留出间距。 */
.btn-sm { padding: 0 14px; height: 40px; font-size: 14px; }
.btn-lg { padding: 14px 30px; font-size: 16.5px; }
.btn-block { width: 100%; }

/* ===== Hero ===== */
.hero { padding: 72px 0 56px; text-align: center; }
.badge-pill { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; color: var(--c-accent); background: rgba(255,181,46,.13); border: 1px solid rgba(255,181,46,.34); padding: 5px 14px; border-radius: var(--r-full); margin-bottom: 20px; }
.hero h1 { margin: 0 0 18px; font-size: 46px; line-height: 1.2; font-weight: 800; letter-spacing: -.02em; color: #fff; }
.hero h1 em { font-style: normal; background: linear-gradient(135deg, var(--c-primary-light) 10%, var(--c-accent) 90%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .sub { margin: 0 auto 30px; max-width: 640px; font-size: 17px; color: var(--c-text-2); line-height: 1.8; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.stats { display: flex; justify-content: center; gap: 48px; margin-top: 44px; flex-wrap: wrap; }
.stats .s { text-align: center; }
.stats .v { font-size: 30px; font-weight: 800; color: #fff; letter-spacing: -.01em; }
.stats .l { font-size: 13px; color: var(--c-text-3); }
@media (max-width: 720px) { .hero { padding: 44px 0 36px; } .hero h1 { font-size: 32px; } .stats { gap: 28px; } }

/* ===== 区块 ===== */
.section { padding: 56px 0; }
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 { margin: 0 0 12px; font-size: 32px; font-weight: 800; letter-spacing: -.01em; color: #fff; }
.section-head p { margin: 0 auto; max-width: 620px; font-size: 15.5px; color: var(--c-text-2); }

/* ===== 卡片网格（宽屏多列） ===== */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(268px, 1fr)); gap: 20px; }
.card { background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--r-xl); padding: 26px; transition: transform var(--d-normal) var(--e-out), background var(--d-normal) var(--e-out), box-shadow var(--d-normal) var(--e-out); }
.card:hover { transform: translateY(-5px); background: var(--c-surface-hi); box-shadow: var(--sh-lg); }
.card .ico { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 13px; color: #fff; margin-bottom: 16px; background: linear-gradient(140deg, var(--c-primary-light), var(--c-primary-dark)); box-shadow: 0 6px 16px -6px rgba(240,180,41,.75), inset 0 1px 0 rgba(255,255,255,.22); }
.card .ico svg { width: 24px; height: 24px; }
.card h3 { margin: 0 0 8px; font-size: 18px; font-weight: 700; color: #fff; }
.card p { margin: 0; font-size: 14.5px; color: var(--c-text-2); line-height: 1.75; }
.card ul { margin: 14px 0 0; padding: 0; list-style: none; }
.card ul li { position: relative; padding-left: 22px; font-size: 14px; color: var(--c-text-2); margin-bottom: 7px; }
.card ul li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--c-accent); font-weight: 700; }

/* ===== 步骤 ===== */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.step { background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--r-xl); padding: 28px; }
.step .no { font-size: 40px; font-weight: 800; line-height: 1; background: linear-gradient(135deg, var(--c-primary-light), var(--c-accent)); -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: 14px; }
.step h3 { margin: 0 0 10px; font-size: 19px; color: #fff; }
.step p { margin: 0; font-size: 14.5px; color: var(--c-text-2); }

/* ===== CTA 带 ===== */
.cta-band { margin: 56px 0; border-radius: var(--r-2xl); padding: 52px 32px; text-align: center; background: linear-gradient(135deg, rgba(240,180,41,.32), rgba(255,181,46,.16)); border: 1px solid rgba(255,209,92,.34); }
.cta-band h2 { margin: 0 0 12px; font-size: 30px; font-weight: 800; color: #fff; }
.cta-band p { margin: 0 auto 26px; max-width: 560px; color: var(--c-text-2); font-size: 15.5px; }

/* ===== 白色面板（表单 / 账户） ===== */
.panel { background: #fff; color: #0f172a; border-radius: var(--r-2xl); padding: 32px; box-shadow: 0 24px 60px -20px rgba(0,0,0,.6); }
.panel h2 { margin: 0 0 6px; font-size: 22px; font-weight: 800; }
.panel .p-sub { margin: 0 0 22px; font-size: 13.5px; color: #475569; }
.field { width: 100%; padding: 11px 14px; border: 1px solid #e2e8f0; border-radius: var(--r-md); font: inherit; font-size: 15px; color: #0f172a; margin-bottom: 12px; transition: border-color var(--d-fast), box-shadow var(--d-fast); }
.field::placeholder { color: #94a3b8; }
.field:focus { outline: none; border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(240,180,41,.2); }
.field[readonly] { background: #f8fafc; color: #475569; font-weight: 600; letter-spacing: .08em; }
/* .row = 输入框 + 行内按钮并排（如「邮箱验证码 + 获取验证码」）。
   🔴 之前 .row 无 margin-bottom，紧邻的 .btn-block 会与行内按钮粘连（用户截图反馈）；
   这里统一给 .row 底部留 16px，并让行内按钮与 .field 等高居中（align-items:center）。 */
.row { display: flex; gap: 10px; align-items: center; margin-bottom: 16px; }
.row .field { flex: 1; min-width: 0; margin-bottom: 0; }
.row .btn { flex: none; }
.tabs { display: flex; gap: 6px; margin-bottom: 20px; background: #f1f5f9; padding: 4px; border-radius: var(--r-md); }
.tabs button { flex: 1; padding: 9px; border: none; background: transparent; border-radius: 7px; font-size: 14.5px; font-weight: 600; color: #64748b; cursor: pointer; font-family: inherit; transition: all var(--d-fast); }
.tabs button.on { background: #fff; color: var(--c-primary); box-shadow: var(--sh); }
/* 🔴 白底面板内的「幽灵按钮」：btn-ghost 是为深色页面设计的（近白文字 + 半透明白底），
   落在白底 .panel 里会变成「白底白字」完全看不清（用户截图反馈）。
   这里按「后代选择器」给 panel 内所有 btn-ghost/btn-block 换成浅底深字描边样式，
   深色页面里的 btn-ghost 不受影响。 */
.panel .btn-ghost { color: #1e293b; background: #f1f5f9; border: 1px solid #cbd5e1; }
.panel .btn-ghost:hover { background: #e2e8f0; border-color: #94a3b8; }
.panel .btn-block { color: #1e293b; }
/* 白底面板里的红色危险按钮（注销账号）：保持红底白字，仅统一圆角与描边 */
.panel .btn-danger { color: #fff; background: #dc2626; border: 1px solid #dc2626; }
.panel .btn-danger:hover { background: #b91c1c; border-color: #b91c1c; }
.msg { font-size: 13.5px; text-align: center; min-height: 20px; margin-top: 10px; }
.msg.err { color: var(--c-error); } .msg.ok { color: var(--c-success); font-weight: 600; }

/* 账户信息行 */
.info-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid #eef2f7; font-size: 14.5px; }
.info-row:last-child { border-bottom: none; }
.info-row .k { color: #64748b; }
.info-row .v { font-weight: 600; color: #0f172a; text-align: right; }
.pill { display: inline-block; padding: 3px 11px; border-radius: var(--r-full); font-size: 12.5px; font-weight: 700; }
.pill.ok { background: #d1fae5; color: #065f46; }
.pill.no { background: #fee2e2; color: #991b1b; }
/* ===== 套餐卡片（可点选下单） =====
   .plan 从「纯展示」升级为「按钮式卡片」：整卡可点 → 下单 → 弹二维码。
   用 button 元素而非 div，天然可聚焦、可回车触发，也免去手动加 role/tabindex。 */
.plan-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-top: 8px; }
.plan { display: block; width: 100%; font: inherit; cursor: pointer; text-align: center; border: 1px solid #e2e8f0; border-radius: var(--r-lg); padding: 16px 14px; background: #fff; color: #0f172a; transition: transform var(--d-fast) var(--e-out), border-color var(--d-fast), box-shadow var(--d-fast); }
.plan:hover { border-color: var(--c-primary); box-shadow: 0 10px 24px -12px rgba(240,180,41,.55); transform: translateY(-2px); }
.plan:active { transform: translateY(0); }
.plan:disabled { cursor: not-allowed; opacity: .55; transform: none; box-shadow: none; border-color: #e2e8f0; }
.plan .n { font-size: 14.5px; font-weight: 700; color: #0f172a; }
.plan .p { font-size: 20px; font-weight: 800; color: var(--c-primary-dark); margin-top: 4px; }
.plan .d { font-size: 12.5px; color: #64748b; margin-top: 4px; }
.plan .go { margin-top: 10px; font-size: 12.5px; font-weight: 700; color: var(--c-primary-dark); }
/* 永久套餐用金色描边强调，但保持白底（面板是白底，不能用深色强调块） */
.plan.perma { border-color: rgba(240,180,41,.65); background: linear-gradient(180deg, #fffdf6, #fff); }
.plan.perma .p { color: #b8860b; }

/* 自选天数（会员兑换券）：输入框 + 实时报价 */
.recharge-row { display: flex; gap: 10px; align-items: center; margin-top: 10px; flex-wrap: wrap; }
.recharge-row .field { flex: 1; min-width: 110px; margin-bottom: 0; }
.recharge-row .btn { flex: none; }
.recharge-note { font-size: 12.5px; color: #64748b; margin-top: 8px; }
.recharge-note b { color: var(--c-primary-dark); font-size: 14px; }

/* ===== 支付弹层（扫码） ===== */
.pay-mask { position: fixed; inset: 0; z-index: 200; display: none; align-items: center; justify-content: center; padding: 20px; background: rgba(11,16,32,.72); backdrop-filter: blur(4px); }
.pay-mask.on { display: flex; }
.pay-box { width: 100%; max-width: 360px; background: #fff; color: #0f172a; border-radius: var(--r-2xl); padding: 26px 24px 22px; text-align: center; box-shadow: 0 30px 70px -20px rgba(0,0,0,.7); }
.pay-box h3 { margin: 0 0 4px; font-size: 18px; font-weight: 800; }
.pay-box .sub { margin: 0 0 16px; font-size: 13px; color: #64748b; }
.pay-box .amount { font-size: 28px; font-weight: 800; color: var(--c-primary-dark); margin-bottom: 14px; }
.pay-box .qr { width: 220px; height: 220px; margin: 0 auto 12px; border: 1px solid #e2e8f0; border-radius: 12px; padding: 8px; background: #fff; display: grid; place-items: center; }
.pay-box .qr img { width: 100%; height: 100%; display: block; }
.pay-box .qr .ph { font-size: 12.5px; color: #94a3b8; }
.pay-box .tip { font-size: 13px; color: #475569; line-height: 1.6; }
.pay-box .pay-status { font-size: 13.5px; margin: 12px 0 0; min-height: 20px; font-weight: 600; color: #64748b; }
.pay-box .pay-status.ok { color: var(--c-success); }
.pay-box .pay-status.err { color: var(--c-error); }
.pay-box .pay-alt { margin-top: 12px; font-size: 12.5px; }
.pay-box .pay-alt a { color: var(--c-primary-dark); word-break: break-all; }
.pay-box .pay-act { display: flex; gap: 10px; margin-top: 16px; }
.pay-box .pay-act .btn { flex: 1; }

/* ===== 页脚 ===== */
.foot { border-top: 1px solid var(--c-line); margin-top: 64px; padding: 40px 0 48px; }
.foot-in { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.foot .b { font-weight: 800; color: #fff; font-size: 16px; }
.foot .s { font-size: 13px; color: var(--c-text-3); }
.foot-links { display: flex; gap: 18px; flex-wrap: wrap; }
.foot-links a { font-size: 14px; color: var(--c-text-2); }
.foot .cr { margin-top: 24px; text-align: center; font-size: 12.5px; color: var(--c-text-3); }

/* 两栏布局（邀请页等） */
.cols { display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: start; }
@media (max-width: 900px) { .cols { grid-template-columns: 1fr; gap: 28px; } }
.list-feat { display: flex; gap: 14px; align-items: flex-start; padding: 14px 0; border-bottom: 1px solid var(--c-line); }
.list-feat:last-child { border-bottom: none; }
.list-feat .ico { width: 40px; height: 40px; flex: none; display: grid; place-items: center; border-radius: 11px; color: #fff; background: linear-gradient(140deg, var(--c-primary-light), var(--c-primary-dark)); box-shadow: 0 5px 14px -6px rgba(240,180,41,.75); }
.list-feat .ico svg { width: 21px; height: 21px; }
.list-feat h4 { margin: 0 0 2px; font-size: 15.5px; color: #fff; }
.list-feat p { margin: 0; font-size: 13.5px; color: var(--c-text-2); }

@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
.rise { animation: rise 500ms var(--e-out) both; }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }