/* ============================================================
   GinBlog 官网 · 编辑风 (Swiss Modernism + Editorial) 视觉体系
   浅色为主，内置深色变量（data-theme="dark" / 系统偏好自动）
   仅视觉层，不影响原有页面逻辑
   ============================================================ */

/* ---------- 主题令牌 ---------- */
:root {
  color-scheme: light;
  --bg: #FAF8F4;
  --surface: #FFFFFF;
  --surface-2: #F2EFE8;
  --ink: #16181D;
  --ink-2: #5A6072;
  --ink-3: #8A90A0;
  --line: #E5E1D8;
  --line-strong: #16181D;
  --accent: #3450D2;
  --accent-ink: #2440B4;
  --accent-soft: #EAEDFC;
  --amber: #E8A33D;
  --amber-soft: #F8EEDD;
  --good: #1D8A5B;
  --good-soft: #E3F4EC;
  --bad: #D64545;
  --bad-soft: #FBE7E7;
  --shadow: 0 1px 2px rgba(22, 24, 29, .05), 0 12px 32px rgba(22, 24, 29, .07);
  --radius: 4px;
  --font-display: 'Fraunces', 'Noto Serif SC', 'Songti SC', serif;
  --font-body: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, monospace;
  --transition: .18s cubic-bezier(.4, 0, .2, 1);
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #12141A;
  --surface: #1A1D26;
  --surface-2: #20242F;
  --ink: #E9EAF0;
  --ink-2: #A6ACBB;
  --ink-3: #737A8B;
  --line: #2A2E3A;
  --line-strong: #E9EAF0;
  --accent: #7C8CFF;
  --accent-ink: #A7B3FF;
  --accent-soft: #1F2445;
  --amber: #F0B35C;
  --amber-soft: #3A2E16;
  --good: #3FBE7B;
  --good-soft: #14301F;
  --bad: #E06B6B;
  --bad-soft: #3A1A1A;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 16px 40px rgba(0, 0, 0, .4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) { color-scheme: dark; }
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .3s, color .3s;
}

a { color: var(--accent); text-decoration: none; }

img { max-width: 100%; display: block; }

::selection { background: var(--accent); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 6px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--ink-3); }

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

section[id] { scroll-margin-top: 84px; }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* ---------- 公告条 ---------- */
.notice {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 10px 24px;
  background: var(--ink); color: #fff;
  font-size: 14px; font-weight: 500;
  border-bottom: 2px solid var(--line-strong);
}
.notice-tag {
  flex: none;
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  letter-spacing: 1px; text-transform: uppercase;
  background: var(--amber); color: #16181D;
  padding: 2px 8px; border-radius: 2px;
}

/* ---------- 顶栏导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background-color .3s, border-color .3s, box-shadow .3s;
}
.header.scrolled { box-shadow: 0 8px 30px rgba(0, 0, 0, .07); }
.nav-inner {
  height: 64px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.logo { display: flex; align-items: center; gap: 10px; color: var(--ink); font-family: var(--font-display); font-size: 20px; font-weight: 700; letter-spacing: -.2px; }
.logo img { width: 28px; height: 28px; border-radius: 6px; object-fit: contain; }
.logo span { white-space: nowrap; }

.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-links a {
  position: relative;
  color: var(--ink-2); font-size: 14.5px; font-weight: 500;
  padding: 8px 12px; border-radius: 2px;
  transition: color var(--transition), background-color var(--transition);
}
.nav-links a:hover { color: var(--ink); background: var(--surface-2); }
.nav-links a.current, .nav-links a.active { color: var(--ink); }
.nav-links a.current::after {
  content: ''; position: absolute; left: 12px; right: 12px; bottom: 2px; height: 2px;
  background: var(--accent);
}

.nav-actions { display: flex; align-items: center; gap: 10px; }

/* 主题切换按钮 */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  width: 38px; height: 38px; padding: 0;
  color: var(--ink-2); background: transparent;
  border: 1px solid var(--line); border-radius: var(--radius);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), background-color var(--transition);
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.theme-toggle svg { display: block; width: 19px; height: 19px; }
.theme-icon-moon { display: none; }
.theme-icon-sun { display: none; }
.theme-toggle .theme-icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .theme-icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .theme-icon-sun { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .theme-toggle .theme-icon-moon { display: none; }
  :root:not([data-theme]) .theme-toggle .theme-icon-sun { display: block; }
}
[data-theme="light"] .theme-toggle .theme-icon-moon { display: block; }
[data-theme="light"] .theme-toggle .theme-icon-sun { display: none; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: var(--radius);
  font-size: 15px; font-weight: 600; white-space: nowrap;
  cursor: pointer; border: 1px solid transparent;
  transition: transform var(--transition), background-color var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.btn:active { transform: translateY(0) scale(.98); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); box-shadow: 0 6px 18px rgba(59, 80, 214, .28); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { background: var(--ink); color: var(--bg); }

/* 登录按钮（导航内） */
.nav-btn { padding: 9px 18px; font-size: 14px; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; }
.hero-inner {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  gap: 56px; padding-top: 96px; padding-bottom: 72px;
}
.hero .eyebrow-row { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 26px; justify-content: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 12.5px; font-weight: 500;
  color: var(--ink-2); letter-spacing: .4px;
  border: 1px solid var(--line); border-radius: 999px; padding: 7px 16px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.eyebrow.new { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.2vw, 4.1rem);
  font-weight: 900; line-height: 1.16; letter-spacing: -1px;
  color: var(--ink); margin-bottom: 26px;
}
.hero h1 .em {
  position: relative; font-style: normal; font-weight: 900; color: var(--accent);
}
.hero h1 .em::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: .04em; height: .16em;
  background: var(--amber); opacity: .55; z-index: -1;
  transform: rotate(-1.5deg);
}

.hero .sub { max-width: 600px; margin: 0 auto 36px; font-size: 17px; color: var(--ink-2); }

.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; margin-bottom: 8px; }

/* Hero：编辑器拟物卡片 */
.hero-visual { position: relative; width: 100%; max-width: 720px; text-align: left; }
.editor-card {
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  box-shadow: 0 30px 80px rgba(22, 24, 29, .18);
  overflow: hidden;
  transform: rotate(.6deg);
  transition: transform .4s cubic-bezier(.2, .8, .2, 1), box-shadow .3s;
}
.hero-visual:hover .editor-card { transform: rotate(0) translateY(-6px); box-shadow: 0 40px 100px rgba(22, 24, 29, .24); }
.editor-titlebar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  background: var(--surface-2); border-bottom: 1px solid var(--line);
}
.win-dot { width: 11px; height: 11px; border-radius: 50%; flex: none; }
.win-dot.r { background: #FF5F57; }
.win-dot.y { background: #FEBC2E; }
.win-dot.g { background: #28C840; }
.win-title { margin-left: 6px; font-size: 12.5px; color: var(--ink-2); }

.editor-body { padding: 20px 22px 18px; }
.editor-tabs { display: flex; gap: 4px; margin-bottom: 18px; }
.editor-tabs span {
  font-size: 12.5px; color: var(--ink-3); padding: 5px 12px; border-radius: 3px;
}
.editor-tabs .active-tab { color: var(--accent); background: var(--accent-soft); font-weight: 600; }

.editor-content { display: flex; flex-direction: column; gap: 10px; margin-bottom: 22px; }
.md-line { font-size: 14px; color: var(--ink-2); }
.md-line b { color: var(--amber); }
.md-line.head { font-family: var(--font-display); font-weight: 700; font-size: 18px; color: var(--ink); }
.md-line.dim { color: var(--ink-3); font-family: var(--font-mono); font-size: 12px; }

.editor-stat {
  display: flex; gap: 16px; flex-wrap: wrap;
  border-top: 1px solid var(--line); padding-top: 14px;
  font-size: 12.5px; color: var(--ink-3);
}
.editor-stat i { color: var(--accent); margin-right: 5px; }

/* ---------- 通用区块 ---------- */
section { padding: 100px 0; position: relative; }
.services { background: var(--surface-2); }

.sec-head { max-width: 640px; margin: 0 auto 56px; text-align: center; }
.sec-head .tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 12.5px; font-weight: 500;
  letter-spacing: .4px; text-transform: uppercase; color: var(--accent);
  border: 1px solid var(--line); border-radius: 999px; padding: 7px 16px;
  background: var(--surface); margin-bottom: 20px;
}
.sec-head .tag::before {
  content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
  flex: none;
}
.sec-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 700; line-height: 1.25; letter-spacing: -.4px;
  color: var(--ink); margin-bottom: 16px;
}
.sec-head p { font-size: 16px; color: var(--ink-2); }

/* ---------- 核心能力 ---------- */
.feat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.feat {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 24px 34px;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.feat::after {
  content: '→'; position: absolute; bottom: 14px; right: 18px;
  font-size: 18px; color: var(--accent); opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--transition), transform var(--transition);
}
.feat:hover { border-color: var(--line-strong); transform: translateY(-4px); box-shadow: var(--shadow); }
.feat:hover::after { opacity: 1; transform: translateX(0); }
.feature-icon, .service-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; margin-bottom: 22px;
  font-size: 19px; color: var(--accent);
  background: var(--accent-soft); border-radius: var(--radius);
  transition: background-color var(--transition), color var(--transition);
}
.feat:hover .feature-icon { background: var(--accent); color: #fff; }
.feat h3 { font-family: var(--font-display); font-size: 18px; font-weight: 700; color: var(--ink); margin-bottom: 10px; }
.feat p { font-size: 14.5px; color: var(--ink-2); line-height: 1.85; }

/* ---------- 产品功能 ---------- */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.service-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 24px 34px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.service-card:hover { border-color: var(--line-strong); transform: translateY(-4px); box-shadow: var(--shadow); }
.service-card h3 { font-family: var(--font-display); font-size: 18px; font-weight: 700; color: var(--ink); margin-bottom: 10px; }
.service-card p { font-size: 14.5px; color: var(--ink-2); line-height: 1.85; }

/* ---------- 授权许可 ---------- */
.license-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.license-card {
  display: flex; flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.license-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.license-card.free { border-color: var(--line-strong); }
.license-card.open { box-shadow: 0 20px 50px rgba(22, 24, 29, .1); }
.license-card.open:hover { box-shadow: 0 24px 60px rgba(22, 24, 29, .16); }
.license-head {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 6px; padding: 34px 24px 30px; text-align: center; position: relative;
  border-bottom: 1px solid var(--line);
}
.license-card.free .license-head { background: var(--accent-soft); }
.license-card.open .license-head { background: var(--amber-soft); }
.license-badge {
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--ink-2);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 4px 14px; margin-bottom: 6px;
  background: var(--surface);
}
.license-price { display: flex; align-items: baseline; gap: 6px; line-height: 1; }
.license-currency { font-family: var(--font-display); font-size: 26px; font-weight: 700; color: var(--amber); }
.license-num { font-family: var(--font-display); font-size: 66px; font-weight: 900; letter-spacing: -2px; line-height: 1; }
.license-card.free .license-num { color: var(--good); }
.license-card.open .license-num { color: var(--ink); }
.license-unit { font-size: 14px; font-weight: 600; color: var(--ink-2); }
.license-body {
  display: flex; flex-direction: column; flex: 1;
  padding: 28px 26px 30px;
}
.license-desc { font-size: 15px; color: var(--ink-2); margin-bottom: 20px; }
.license-list { list-style: none; margin-bottom: 28px; flex: 1; }
.license-list li { padding: 9px 0; font-size: 14.5px; color: var(--ink); border-bottom: 1px dashed var(--line); }
.license-list li:last-child { border-bottom: none; }
.license-list li i { color: var(--good); margin-right: 10px; width: 16px; }
.license-card .btn { margin-top: auto; width: 100%; }

/* ---------- 联系我们 ---------- */
.contact-form { max-width: 760px; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-bottom: 32px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 13.5px; font-weight: 600; color: var(--ink); }
.form-group input, .form-group textarea {
  font-family: var(--font-body); font-size: 15px;
  color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft);
}
.form-group textarea { min-height: 130px; resize: vertical; }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--ink-3); }
.form-btn {
  font-family: var(--font-body); font-size: 15px; font-weight: 600;
  color: #fff; background: var(--accent); border: none; border-radius: var(--radius);
  padding: 13px 40px; cursor: pointer;
  transition: background-color var(--transition), transform var(--transition);
}
.form-btn:hover { background: var(--accent-ink); }

/* ---------- 页脚 ---------- */
.site-foot { background: var(--ink); color: var(--bg); padding: 60px 0 30px; }
.footer-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px;
}
.footer-column h3 { font-family: var(--font-display); font-size: 17px; font-weight: 700; margin-bottom: 18px; color: #fff; letter-spacing: -.2px; }
.footer-column p { font-size: 14.5px; color: rgba(239, 240, 245, .7); line-height: 1.85; }
.footer-column ul { list-style: none; }
.footer-column li { margin-bottom: 12px; font-size: 14px; color: rgba(239, 240, 245, .7); }
.footer-column li i { width: 18px; margin-right: 8px; color: var(--amber); }
.footer-column a { color: rgba(239, 240, 245, .75); transition: color var(--transition); }
.footer-column a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(239, 240, 245, .18); padding-top: 24px;
  font-size: 13px; color: rgba(239, 240, 245, .5);
}
.footer-bottom p { margin-top: 4px; }

/* ---------- 滚动显现动效 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease-out, transform .6s ease-out; }
.reveal.in-view { opacity: 1; transform: none; }
.feat-grid .reveal:nth-child(2), .services-grid .reveal:nth-child(2) { transition-delay: .06s; }
.feat-grid .reveal:nth-child(3), .services-grid .reveal:nth-child(3) { transition-delay: .12s; }
.feat-grid .reveal:nth-child(4), .services-grid .reveal:nth-child(4) { transition-delay: .18s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .feat-grid, .services-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hero-inner { gap: 44px; padding-top: 72px; }
  .hero-visual { max-width: 520px; }
  .license-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  section { padding: 72px 0; }
  .nav-inner { height: 60px; }
  .nav-btn { padding: 9px 14px; font-size: 13.5px; }
  .feat-grid, .services-grid, .form-grid { grid-template-columns: 1fr; }
  .license-num { font-size: 54px; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: clamp(2rem, 9vw, 2.6rem); }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}