/* ============================================================
   MengZe Site SaaS  |  售卖站样式
   Design System — Deep Space · Amber Gold（与官网同源）
   独立一份，不依赖官网 assets，可单独打包部署
   ============================================================ */

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

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

body {
  background: var(--bg);
  color: var(--txt);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
ul, ol { list-style: none; }

::selection { background: var(--gold); color: #0a0d16; }

/* ---------- Tokens ---------- */
:root {
  --bg:        #060912;
  --bg-1:      #080D1A;
  --bg-2:      #0B1223;
  --bg-3:      #101B33;
  --bg-card:   rgba(16, 27, 51, .55);

  --gold:      #FFB224;
  --gold-hi:   #FFD06B;
  --gold-dim:  #8A6316;

  --blue:      #4C7DFF;
  --cyan:      #35E0D8;
  --danger:    #FF5C6C;
  --ok:        #3DDC84;

  --txt:       #E9EEFA;
  --txt-2:     #93A2C0;
  --txt-3:     #5C6B87;

  --line:      rgba(255, 255, 255, .09);
  --line-soft: rgba(255, 255, 255, .05);

  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas,
               "Liberation Mono", monospace;

  --pad:  clamp(20px, 5vw, 72px);
  --maxw: 1400px;
  --radius: 4px;
  --ease: cubic-bezier(.16, 1, .3, 1);
}

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: var(--bg-1); }
::-webkit-scrollbar-thumb { background: #1E2B4A; border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold-dim); }

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad); }
.wrap-n { width: 100%; max-width: 1080px; margin-inline: auto; padding-inline: var(--pad); }
section { position: relative; }

.grid-bg {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 100%);
}

/* 噪点 */
.noise {
  position: fixed; inset: 0; z-index: 9; pointer-events: none; opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 通用零件 ---------- */
.mono { font-family: var(--font-mono); letter-spacing: .06em; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .22em;
  text-transform: uppercase; color: var(--gold);
}
.eyebrow::before {
  content: ""; width: 26px; height: 1px; background: var(--gold);
}

.sec-head { margin-bottom: 48px; }
.sec-head h2 {
  font-size: clamp(28px, 4vw, 46px); line-height: 1.2; font-weight: 700;
  letter-spacing: -.01em; margin-top: 14px;
}
.sec-head p { color: var(--txt-2); margin-top: 14px; max-width: 62ch; }

.sect { padding: clamp(60px, 9vw, 120px) 0; position: relative; }

/* ---------- 顶栏 ---------- */
.top {
  position: sticky; top: 0; z-index: 50;
  background: rgba(6, 9, 18, .82);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.top .wrap { display: flex; align-items: center; gap: 24px; height: 66px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .02em; }
.logo .mark {
  width: 26px; height: 26px; border: 1px solid var(--gold); border-radius: 3px;
  display: grid; place-items: center; color: var(--gold);
  font-family: var(--font-mono); font-size: 13px; font-weight: 700;
}
.logo small { color: var(--txt-3); font-weight: 400; font-size: 12px; letter-spacing: .1em; }
.top nav { margin-left: auto; display: flex; align-items: center; gap: 26px; }
.top nav a { font-size: 14px; color: var(--txt-2); transition: color .25s var(--ease); }
.top nav a:hover { color: var(--txt); }
@media (max-width: 760px) { .top nav a.hide-sm { display: none; } }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 26px; border-radius: var(--radius); border: 1px solid transparent;
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease),
              background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
  position: relative; overflow: hidden;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-gold { background: var(--gold); color: #0a0d16; }
.btn-gold:hover { box-shadow: 0 10px 34px -10px rgba(255, 178, 36, .7); background: var(--gold-hi); }

.btn-ghost { border-color: var(--line); color: var(--txt); background: rgba(255, 255, 255, .02); }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }

.btn-block { width: 100%; }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }

/* ---------- Hero ---------- */
.hero { padding: clamp(70px, 11vw, 150px) 0 clamp(50px, 7vw, 90px); position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; top: -30%; left: 50%; transform: translateX(-50%);
  width: 900px; height: 900px; pointer-events: none;
  background: radial-gradient(circle, rgba(255, 178, 36, .13), transparent 62%);
}
.hero .wrap-n { position: relative; z-index: 2; }
.hero h1 {
  font-size: clamp(34px, 6.2vw, 72px); line-height: 1.08; font-weight: 800;
  letter-spacing: -.025em; margin-top: 22px;
}
.hero h1 .hl {
  background: linear-gradient(100deg, var(--gold), var(--gold-hi) 45%, var(--gold));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .sub { color: var(--txt-2); font-size: clamp(15px, 1.6vw, 19px); margin-top: 22px; max-width: 60ch; }
.hero .acts { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }

.hero-meta { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 46px; padding-top: 26px; border-top: 1px solid var(--line); }
.hero-meta div .n { font-family: var(--font-mono); font-size: 26px; font-weight: 700; color: var(--gold); line-height: 1.2; }
.hero-meta div .t { font-size: 13px; color: var(--txt-3); letter-spacing: .04em; }

/* 终端块 */
.term {
  margin-top: 44px; border: 1px solid var(--line); border-radius: 6px;
  background: #04070f; overflow: hidden; box-shadow: 0 30px 70px -40px rgba(0, 0, 0, .9);
}
.term-bar {
  display: flex; align-items: center; gap: 8px; padding: 10px 14px;
  border-bottom: 1px solid var(--line); background: rgba(255, 255, 255, .02);
}
.term-bar i { width: 10px; height: 10px; border-radius: 50%; background: #22304d; display: block; }
.term-bar i:nth-child(1) { background: #3a4661; }
.term-bar i:nth-child(2) { background: #2f3b57; }
.term-bar i:nth-child(3) { background: #26314a; }
.term-bar span { margin-left: 8px; font-family: var(--font-mono); font-size: 12px; color: var(--txt-3); }
.term pre {
  padding: 18px 16px; font-family: var(--font-mono); font-size: 13.5px;
  line-height: 1.9; color: var(--txt-2); overflow-x: auto; white-space: pre;
}
.term pre .c { color: var(--txt-3); }
.term pre .g { color: var(--gold); }
.term pre .b { color: var(--blue); }
.term pre .ok { color: var(--ok); }

/* ---------- 卡片网格 ---------- */
.cards { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.cards-2 { grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); }

.card {
  position: relative; border: 1px solid var(--line); border-radius: 6px;
  background: var(--bg-card); padding: 28px 26px;
  transition: border-color .35s var(--ease), transform .35s var(--ease), background .35s var(--ease);
}
.card::after {
  content: ""; position: absolute; inset: 0; border-radius: 6px; pointer-events: none;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 178, 36, .1) 50%, transparent 70%);
  opacity: 0; transition: opacity .4s var(--ease);
}
.card:hover { border-color: rgba(255, 178, 36, .45); transform: translateY(-4px); background: rgba(16, 27, 51, .8); }
.card:hover::after { opacity: 1; }

.card .ico {
  width: 42px; height: 42px; border-radius: 5px; display: grid; place-items: center;
  border: 1px solid var(--line); background: rgba(255, 178, 36, .07);
  color: var(--gold); font-family: var(--font-mono); font-size: 17px; font-weight: 700;
  margin-bottom: 18px;
}
.card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.card p { color: var(--txt-2); font-size: 14.5px; line-height: 1.8; }

/* ---------- 套餐 ---------- */
.plans { display: grid; gap: 22px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); align-items: start; }
.plan {
  position: relative; border: 1px solid var(--line); border-radius: 8px;
  background: linear-gradient(180deg, rgba(16, 27, 51, .7), rgba(11, 18, 35, .5));
  padding: 32px 28px; transition: transform .4s var(--ease), border-color .4s var(--ease);
}
.plan:hover { transform: translateY(-6px); border-color: rgba(255, 178, 36, .5); }
.plan.hot { border-color: rgba(255, 178, 36, .55); background: linear-gradient(180deg, rgba(255, 178, 36, .09), rgba(11, 18, 35, .6)); }
.plan .badge {
  position: absolute; top: -11px; left: 28px; padding: 3px 12px; border-radius: 2px;
  background: var(--gold); color: #0a0d16; font-size: 11px; font-weight: 700;
  letter-spacing: .12em; font-family: var(--font-mono);
}
.plan .nm { font-size: 15px; color: var(--txt-2); letter-spacing: .08em; font-family: var(--font-mono); }
.plan .price { display: flex; align-items: baseline; gap: 4px; margin: 14px 0 4px; }
.plan .price .cur { font-size: 20px; color: var(--gold); }
.plan .price .num { font-family: var(--font-mono); font-size: 46px; font-weight: 800; color: var(--txt); line-height: 1; }
.plan .price .unit { color: var(--txt-3); font-size: 14px; }
.plan .note { font-size: 13px; color: var(--txt-3); min-height: 22px; }
.plan ul { margin: 22px 0 26px; display: grid; gap: 11px; }
.plan ul li { display: flex; gap: 10px; font-size: 14.5px; color: var(--txt-2); line-height: 1.6; }
.plan ul li::before { content: "✓"; color: var(--gold); font-weight: 700; flex: none; }
.plan ul li.off { color: var(--txt-3); }
.plan ul li.off::before { content: "—"; color: var(--txt-3); }

/* ---------- 表格 ---------- */
.tbl-wrap { border: 1px solid var(--line); border-radius: 6px; overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; min-width: 620px; font-size: 14.5px; }
table.tbl th, table.tbl td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line-soft); }
table.tbl thead th { background: rgba(255, 255, 255, .03); color: var(--txt-3); font-size: 12.5px; letter-spacing: .1em; font-weight: 600; }
table.tbl tbody tr:hover { background: rgba(255, 255, 255, .02); }
table.tbl td:first-child { color: var(--txt); }
table.tbl .y { color: var(--ok); }
table.tbl .n { color: var(--txt-3); }

/* ---------- 步骤条 ---------- */
.steps { display: flex; gap: 0; margin-bottom: 40px; flex-wrap: wrap; }
.step { flex: 1; min-width: 150px; position: relative; padding-top: 34px; }
.step::before {
  content: ""; position: absolute; top: 13px; left: 0; right: 0; height: 1px; background: var(--line);
}
.step:first-child::before { left: 50%; }
.step:last-child::before { right: 50%; }
.step .dot {
  position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 27px; height: 27px; border-radius: 50%; display: grid; place-items: center;
  border: 1px solid var(--line); background: var(--bg-1); z-index: 2;
  font-family: var(--font-mono); font-size: 12px; color: var(--txt-3);
  transition: all .35s var(--ease);
}
.step .lb { text-align: center; font-size: 13.5px; color: var(--txt-3); transition: color .35s var(--ease); }
.step.on .dot { border-color: var(--gold); background: var(--gold); color: #0a0d16; font-weight: 700; }
.step.on .lb { color: var(--txt); }
.step.done .dot { border-color: var(--ok); color: var(--ok); }

/* ---------- 表单 ---------- */
.form { display: grid; gap: 18px; }
.fld label { display: block; font-size: 13px; color: var(--txt-2); margin-bottom: 8px; letter-spacing: .03em; }
.fld label .req { color: var(--gold); }
.fld input, .fld select, .fld textarea {
  width: 100%; padding: 13px 15px; border-radius: var(--radius);
  border: 1px solid var(--line); background: rgba(255, 255, 255, .03); color: var(--txt);
  outline: none; transition: border-color .25s var(--ease), background .25s var(--ease);
}
.fld input:focus, .fld select:focus, .fld textarea:focus {
  border-color: var(--gold); background: rgba(255, 178, 36, .05);
}
.fld input.mono { font-family: var(--font-mono); letter-spacing: .14em; text-transform: uppercase; }
.fld .hint { font-size: 12.5px; color: var(--txt-3); margin-top: 7px; line-height: 1.7; }
.fld .err { font-size: 12.5px; color: var(--danger); margin-top: 7px; display: none; }
.fld.bad input { border-color: var(--danger); }
.fld.bad .err { display: block; }
.row2 { display: grid; gap: 18px; grid-template-columns: 1fr 1fr; }
@media (max-width: 640px) { .row2 { grid-template-columns: 1fr; } }

/* 提示框 */
.alert { padding: 14px 16px; border-radius: var(--radius); font-size: 14px; line-height: 1.75; border: 1px solid; }
.alert.info { border-color: rgba(76, 125, 255, .35); background: rgba(76, 125, 255, .07); color: #a9c2ff; }
.alert.ok   { border-color: rgba(61, 220, 132, .35); background: rgba(61, 220, 132, .07); color: #86ecb4; }
.alert.warn { border-color: rgba(255, 178, 36, .35); background: rgba(255, 178, 36, .07); color: var(--gold-hi); }
.alert.err  { border-color: rgba(255, 92, 108, .35); background: rgba(255, 92, 108, .07); color: #ff9aa4; }

/* 代码块（解析指引） */
.dns {
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-top: 12px;
}
.dns table { width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 13px; }
.dns th, .dns td { padding: 10px 14px; border-bottom: 1px solid var(--line-soft); text-align: left; }
.dns thead th { background: rgba(255, 255, 255, .03); color: var(--txt-3); font-size: 11.5px; letter-spacing: .1em; }
.dns td { color: var(--txt-2); }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; padding: 20px 4px; display: flex; align-items: center; gap: 14px;
  font-size: 16px; font-weight: 600; transition: color .25s var(--ease);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--gold); }
.faq summary::after {
  content: "+"; margin-left: auto; color: var(--gold); font-family: var(--font-mono); font-size: 19px;
  transition: transform .3s var(--ease);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--txt-2); padding: 0 4px 22px; font-size: 14.5px; line-height: 1.85; max-width: 80ch; }

/* ---------- 页脚 ---------- */
.foot { border-top: 1px solid var(--line); padding: 44px 0; }
.foot .wrap { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; }
.foot .c { color: var(--txt-3); font-size: 13px; }
.foot .r { margin-left: auto; display: flex; gap: 22px; }
.foot .r a { color: var(--txt-3); font-size: 13px; transition: color .25s var(--ease); }
.foot .r a:hover { color: var(--gold); }

/* ---------- 后台通用（平台管理） ---------- */
.pf { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.pf-side { border-right: 1px solid var(--line); background: var(--bg-1); padding: 20px 0; }
.pf-side .grp { padding: 16px 20px 6px; font-size: 11px; color: var(--txt-3); letter-spacing: .16em; font-family: var(--font-mono); }
.pf-side a {
  display: flex; align-items: center; gap: 10px; padding: 11px 20px; font-size: 14px; color: var(--txt-2);
  border-left: 2px solid transparent; transition: all .25s var(--ease);
}
.pf-side a:hover { background: rgba(255, 255, 255, .03); color: var(--txt); }
.pf-side a.on { border-left-color: var(--gold); background: rgba(255, 178, 36, .07); color: var(--gold); }
.pf-main { padding: 28px 30px; overflow-x: hidden; }
.pf-hd { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 26px; }
.pf-hd h1 { font-size: 24px; font-weight: 700; }
.pf-hd .sp { margin-left: auto; display: flex; gap: 10px; flex-wrap: wrap; }
@media (max-width: 900px) { .pf { grid-template-columns: 1fr; } .pf-side { display: none; } }

.stat-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); margin-bottom: 28px; }
.stat { border: 1px solid var(--line); border-radius: 6px; padding: 20px 22px; background: var(--bg-card); }
.stat .k { font-size: 12.5px; color: var(--txt-3); letter-spacing: .06em; }
.stat .v { font-family: var(--font-mono); font-size: 30px; font-weight: 800; margin-top: 6px; line-height: 1.1; }
.stat .v.gold { color: var(--gold); }
.stat .v.ok { color: var(--ok); }

.pane { display: none; }
.pane.on { display: block; }

.tb { border: 1px solid var(--line); border-radius: 6px; overflow-x: auto; }
.tb table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 720px; }
.tb th, .tb td { padding: 12px 16px; border-bottom: 1px solid var(--line-soft); text-align: left; white-space: nowrap; }
.tb thead th { background: rgba(255, 255, 255, .03); color: var(--txt-3); font-size: 12px; letter-spacing: .1em; }
.tb tbody tr:hover { background: rgba(255, 255, 255, .02); }
.tb .empty { padding: 40px; text-align: center; color: var(--txt-3); }

.tag { display: inline-block; padding: 2px 9px; border-radius: 2px; font-size: 11.5px; font-family: var(--font-mono); letter-spacing: .06em; }
.tag.on { background: rgba(61, 220, 132, .14); color: var(--ok); }
.tag.off { background: rgba(255, 92, 108, .14); color: var(--danger); }
.tag.new { background: rgba(76, 125, 255, .14); color: #7fa4ff; }
.tag.gold { background: rgba(255, 178, 36, .14); color: var(--gold); }

.mini {
  padding: 7px 13px; border-radius: 3px; border: 1px solid var(--line);
  background: rgba(255, 255, 255, .03); font-size: 12.5px; cursor: pointer;
  transition: all .25s var(--ease); color: var(--txt-2);
}
.mini:hover { border-color: var(--gold); color: var(--gold); }
.mini.danger:hover { border-color: var(--danger); color: var(--danger); }

.codebox {
  display: flex; flex-wrap: wrap; gap: 8px; padding: 16px; border: 1px solid var(--line);
  border-radius: var(--radius); background: #04070f; max-height: 340px; overflow-y: auto;
}
.codebox code {
  font-family: var(--font-mono); font-size: 13px; color: var(--gold);
  padding: 5px 10px; border: 1px solid var(--line); border-radius: 3px; background: rgba(255, 178, 36, .05);
}

/* 登录遮罩 */
.mask {
  position: fixed; inset: 0; z-index: 100; display: grid; place-items: center;
  background: rgba(6, 9, 18, .96); backdrop-filter: blur(6px);
}
.mask.hide { display: none; }
.mask .box { width: min(400px, 92vw); border: 1px solid var(--line); border-radius: 8px; padding: 32px; background: var(--bg-1); }

/* ---------- 入场动画 ---------- */
.rv { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.rv.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .rv { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .01ms !important; }
}