/* ==========================================================================
   DoctorX 官网 · 设计系统
   色板取自客户端图标像素 + 客户端界面语义（红=已删除恢复 绿=现存数据）
   ========================================================================== */

:root {
  /* 底色层级 */
  --bg:          #080D17;
  --bg-elev-1:   #0B1220;
  --bg-elev-2:   #101B2E;
  --bg-elev-3:   #16233A;
  --line:        #1E2C45;
  --line-strong: #2A3D5C;

  /* 文字 */
  --text:        #E9F1FB;
  --text-dim:    #8FA6C4;
  --text-mute:   #5F7392;
  --text-faint:  #3D4E69;

  /* 品牌 */
  --brand:       #2E90F7;
  --brand-soft:  #6FB4FF;
  --brand-deep:  #1C56E8;
  --cyan:        #22D3EE;
  --cyan-soft:   #7DEFB8;

  /* 语义（与客户端一致） */
  --ok:          #22C55E;
  --warn:        #F0B429;
  --danger:      #EF4444;

  /* 渐变与阴影 */
  --grad-brand:  linear-gradient(135deg, #31BCF5 0%, #2E90F7 45%, #1C56E8 100%);
  --grad-text:   linear-gradient(100deg, #EAF4FF 0%, #9CCBFF 55%, #56D8F0 100%);
  --grad-card:   linear-gradient(160deg, rgba(46,144,247,.10) 0%, rgba(8,13,23,0) 55%);
  --shadow-lg:   0 28px 70px -32px rgba(0, 0, 0, .95);
  --shadow-glow: 0 0 0 1px rgba(46, 144, 247, .28), 0 18px 50px -20px rgba(46, 144, 247, .38);

  /* 版式 */
  --font-sans: "Inter", "Outfit", "HarmonyOS Sans SC", "PingFang SC",
               "Microsoft YaHei UI", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", "Cascadia Mono",
               Consolas, monospace;

  --radius-sm: 10px;
  --radius:    16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --maxw: 1200px;
  --nav-h: 68px;

  --ease: cubic-bezier(.22, .68, 0, 1);
}

/* ------------------------------- 重置 ---------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 24px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -.015em;
}

p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

::selection { background: rgba(46, 144, 247, .35); color: #fff; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #070B14; }
::-webkit-scrollbar-thumb {
  background: #223350;
  border-radius: 6px;
  border: 2px solid #070B14;
}
::-webkit-scrollbar-thumb:hover { background: #2E4A72; }

/* ------------------------------ 布局工具 -------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 104px 0; position: relative; }
.section--tight { padding: 72px 0; }
.section--alt {
  background:
    radial-gradient(900px 420px at 15% 0%, rgba(46,144,247,.07), transparent 70%),
    var(--bg-elev-1);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* 分隔网格背景 */
.grid-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(46,144,247,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46,144,247,.055) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 20%, transparent 78%);
  pointer-events: none;
}

/* ------------------------------ 排版元件 -------------------------------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--brand-soft);
  padding: 5px 12px;
  border: 1px solid rgba(46,144,247,.3);
  border-radius: 100px;
  background: rgba(46,144,247,.07);
}

.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
}

.h-xl { font-size: clamp(34px, 5.4vw, 62px); }
.h-lg { font-size: clamp(28px, 3.6vw, 42px); }
.h-md { font-size: clamp(20px, 2.2vw, 26px); }

.grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  color: var(--text-dim);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
}

.sec-head { max-width: 760px; margin-bottom: 56px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head .eyebrow { margin-bottom: 20px; }
.sec-head h2 { margin-bottom: 16px; }

.mono { font-family: var(--font-mono); }

/* -------------------------------- 按钮 ---------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 48px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-size: 14.5px;
  font-weight: 600;
  white-space: nowrap;
  transition: transform .18s var(--ease), box-shadow .25s var(--ease),
              background-color .2s, border-color .2s, color .2s;
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--grad-brand);
  color: #fff;
  box-shadow: 0 14px 34px -14px rgba(46,144,247,.85);
}
.btn--primary:hover {
  box-shadow: 0 20px 46px -14px rgba(46,144,247,1);
  transform: translateY(-2px);
}

.btn--ghost {
  background: rgba(255,255,255,.035);
  border-color: var(--line-strong);
  color: var(--text);
}
.btn--ghost:hover {
  border-color: rgba(46,144,247,.55);
  background: rgba(46,144,247,.1);
  transform: translateY(-2px);
}

.btn--sm { height: 40px; padding: 0 17px; font-size: 13.5px; border-radius: 10px; }
.btn--block { width: 100%; }

.btn svg { width: 17px; height: 17px; flex: none; }

/* -------------------------------- 卡片 ---------------------------------- */
.card {
  position: relative;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev-1);
  background-image: var(--grad-card);
  overflow: hidden;
  transition: transform .3s var(--ease), border-color .3s, box-shadow .3s;
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(420px 200px at var(--mx, 50%) var(--my, 0%),
              rgba(46,144,247,.13), transparent 70%);
  opacity: 0;
  transition: opacity .35s;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(46,144,247,.4);
  box-shadow: var(--shadow-lg);
}
.card:hover::after { opacity: 1; }

.card__icon {
  width: 46px; height: 46px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: rgba(46,144,247,.12);
  border: 1px solid rgba(46,144,247,.26);
  color: var(--brand-soft);
  margin-bottom: 18px;
}
.card__icon svg { width: 22px; height: 22px; }

.card h3 { font-size: 17px; margin-bottom: 9px; }
.card p { color: var(--text-dim); font-size: 14px; }

/* -------------------------------- 网格 ---------------------------------- */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* -------------------------------- 导航 ---------------------------------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background-color .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}

.nav.is-stuck {
  background: rgba(8,13,23,.82);
  backdrop-filter: blur(18px) saturate(1.5);
  -webkit-backdrop-filter: blur(18px) saturate(1.5);
  border-bottom-color: var(--line);
}

.nav .wrap { display: flex; align-items: center; gap: 30px; }

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -.01em;
  flex: none;
}
.brand img { width: 32px; height: 32px; border-radius: 9px; }
.brand small {
  display: block;
  font-family: var(--font-mono);
  font-size: 8.5px;
  letter-spacing: .22em;
  color: var(--text-mute);
  font-weight: 500;
  margin-top: 1px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav__links a {
  position: relative;
  padding: 8px 14px;
  border-radius: 9px;
  font-size: 14px;
  color: var(--text-dim);
  transition: color .2s, background-color .2s;
}
.nav__links a:hover { color: var(--text); background: rgba(255,255,255,.05); }
.nav__links a.is-active { color: var(--text); }
.nav__links a.is-active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-brand);
}

.nav__cta { display: flex; align-items: center; gap: 10px; margin-left: 8px; }

.nav__burger {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: rgba(255,255,255,.03);
  margin-left: auto;
}
.nav__burger span {
  display: block;
  width: 17px; height: 2px;
  margin: 3.5px auto;
  background: var(--text);
  border-radius: 2px;
  transition: transform .25s, opacity .2s;
}

/* 顶部滚动进度 */
.progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0;
  z-index: 200;
  background: var(--grad-brand);
  box-shadow: 0 0 12px rgba(46,144,247,.9);
}

/* 移动端抽屉 */
.drawer {
  position: fixed;
  inset: var(--nav-h) 0 auto 0;
  z-index: 99;
  background: rgba(10,16,29,.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
  padding: 18px 24px 26px;
  display: none;
  flex-direction: column;
  gap: 4px;
}
.drawer.is-open { display: flex; }
.drawer a {
  padding: 13px 4px;
  border-bottom: 1px solid rgba(30,44,69,.6);
  font-size: 15px;
  color: var(--text-dim);
}
.drawer a:hover { color: var(--text); }
.drawer .btn { margin-top: 16px; }

/* -------------------------------- 页脚 ---------------------------------- */
.footer {
  border-top: 1px solid var(--line);
  background: #060A12;
  padding: 64px 0 30px;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 44px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(30,44,69,.7);
}

.footer__brand p {
  color: var(--text-mute);
  font-size: 13.5px;
  margin-top: 16px;
  max-width: 330px;
}

.footer__col h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .13em;
  color: var(--text-mute);
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-weight: 600;
}
.footer__col a,
.footer__col span {
  display: block;
  font-size: 13.5px;
  color: var(--text-dim);
  padding: 5px 0;
  transition: color .2s;
}
.footer__col a:hover { color: var(--brand-soft); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding-top: 24px;
  flex-wrap: wrap;
  color: var(--text-mute);
  font-size: 12.5px;
}
.footer__bottom p { font-size: 12.5px; color: var(--text-mute); }

.footer__legal { display: flex; gap: 20px; flex-wrap: wrap; }
.footer__legal a:hover { color: var(--brand-soft); }

/* ICP 备案号：工信部要求放在首页底部居中，并链接到 beian.miit.gov.cn */
.footer__beian {
  padding-top: 16px;
  text-align: center;
  font-size: 12.5px;
  color: var(--text-mute);
}
.footer__beian a:hover { color: var(--brand-soft); }

/* -------------------------- 目录导航（内页） ---------------------------- */
.page-hero {
  position: relative;
  padding: calc(var(--nav-h) + 76px) 0 64px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-elev-1);
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  top: -140px; right: -100px;
  width: 520px; height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46,144,247,.22), transparent 66%);
  pointer-events: none;
}
.page-hero .wrap { position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(30px, 4vw, 46px); margin: 20px 0 16px; }
.page-hero p { max-width: 660px; }

.crumb {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 12.5px;
  font-family: var(--font-mono);
  color: var(--text-mute);
}
.crumb a:hover { color: var(--brand-soft); }
.crumb span { color: var(--line-strong); }

/* -------------------------------- 标签页 -------------------------------- */
.tabs {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--bg-elev-1);
  flex-wrap: wrap;
}
.tabs button {
  border: 0;
  background: transparent;
  padding: 9px 18px;
  border-radius: 9px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-dim);
  transition: background-color .2s, color .2s;
}
.tabs button:hover { color: var(--text); }
.tabs button.is-active {
  background: rgba(46,144,247,.16);
  color: #fff;
  box-shadow: inset 0 0 0 1px rgba(46,144,247,.34);
}

.tab-panel { display: none; }
.tab-panel.is-active { display: block; animation: fade-up .4s var(--ease) both; }

/* -------------------------------- 表格 ---------------------------------- */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev-1);
}
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  min-width: 680px;
}
table.data th {
  text-align: left;
  padding: 14px 18px;
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-mute);
  background: rgba(16,27,46,.9);
  border-bottom: 1px solid var(--line);
  font-weight: 600;
  white-space: nowrap;
}
table.data td {
  padding: 15px 18px;
  border-bottom: 1px solid rgba(30,44,69,.62);
  color: var(--text-dim);
  vertical-align: top;
}
table.data tr:last-child td { border-bottom: 0; }
table.data tbody tr { transition: background-color .18s; }
table.data tbody tr:hover { background: rgba(46,144,247,.045); }
table.data td strong { color: var(--text); font-weight: 600; }
table.data code {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--brand-soft);
}

/* -------------------------------- 徽标 ---------------------------------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 11.5px;
  font-weight: 600;
  white-space: nowrap;
  border: 1px solid transparent;
}
.tag::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: currentColor;
}
.tag--ok     { color: #4ADE80; background: rgba(34,197,94,.11);  border-color: rgba(34,197,94,.3); }
.tag--warn   { color: #FBBF5C; background: rgba(240,180,41,.11); border-color: rgba(240,180,41,.3); }
.tag--danger { color: #FB7185; background: rgba(239,68,68,.11);  border-color: rgba(239,68,68,.3); }
.tag--info   { color: #7DD3FC; background: rgba(34,211,238,.11); border-color: rgba(34,211,238,.3); }
.tag--mute   { color: var(--text-mute); background: rgba(143,166,196,.08); border-color: var(--line-strong); }

/* ------------------------------ 滚动动画 -------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  will-change: opacity, transform;
}
[data-reveal].is-in { opacity: 1; transform: none; }

@keyframes fade-up {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}

@keyframes float-slow {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

@keyframes pulse-ring {
  0%   { transform: scale(.85); opacity: .8; }
  70%  { transform: scale(1.6);  opacity: 0; }
  100% { transform: scale(1.6);  opacity: 0; }
}

@keyframes dash-flow {
  to { stroke-dashoffset: -320; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

/* -------------------------------- 响应式 -------------------------------- */
@media (max-width: 1080px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 34px; }
}

@media (max-width: 900px) {
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: block; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
  :root { --nav-h: 62px; }
  body { font-size: 14.5px; }
  .section { padding: 68px 0; }
  .wrap { padding: 0 18px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .card { padding: 22px; }
  .footer__top { grid-template-columns: 1fr; gap: 30px; }
  .sec-head { margin-bottom: 38px; }
  .btn { height: 46px; padding: 0 20px; }
}