/* ============================================================
   DeepSeek Harness — dsh.textwork.cn 展示页
   深色主题 · 通宽大展示栏 · 无外部依赖
   ============================================================ */

:root {
  --bg: #070b16;
  --bg-soft: #0b1120;
  --panel: #0e1628;
  --panel-2: #111a30;
  --line: rgba(148, 163, 184, 0.14);
  --line-strong: rgba(148, 163, 184, 0.28);
  --text: #e6ecf8;
  --text-dim: #93a1bd;
  --text-faint: #5f6d8c;
  --brand: #4d6bfe;
  --brand-2: #38bdf8;
  --green: #34d399;
  --radius: 20px;
  --maxw: 1160px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; line-height: 1.25; }
p { margin: 0; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.mono { font-family: var(--mono); font-size: 0.9em; background: rgba(77, 107, 254, 0.12); color: #a5b6ff; padding: 0.1em 0.45em; border-radius: 6px; }
.grad-text {
  background: linear-gradient(100deg, var(--brand) 0%, var(--brand-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.only-desktop { display: block; }
.only-mobile { display: none; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(7, 11, 22, 0.72);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  height: 64px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark {
  width: 30px; height: 30px; flex: none;
  border-radius: 9px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.16), transparent 60%),
    linear-gradient(135deg, var(--brand), #3b2bd4);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.12), 0 4px 18px rgba(77,107,254,0.45);
  position: relative;
}
.brand-mark::after {
  content: "";
  position: absolute; inset: 8px;
  border: 2px solid #fff; border-left: none; border-top: none;
  transform: skewX(-14deg);
  border-radius: 0 0 6px 0;
}
.brand-name { font-weight: 700; font-size: 15px; letter-spacing: 0.2px; white-space: nowrap; }
.brand-host, .footer-host {
  font-size: 12px; color: var(--text-faint);
  font-family: var(--mono);
  border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px;
  white-space: nowrap;
}
.header-nav { display: flex; align-items: center; gap: 22px; }
.header-nav > a:not(.btn) { font-size: 14px; color: var(--text-dim); transition: color 0.2s; }
.header-nav > a:not(.btn):hover { color: var(--text); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: inherit; font-weight: 600; font-size: 15px;
  border-radius: 12px; padding: 11px 20px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  color: #fff;
  background: linear-gradient(100deg, var(--brand), #5a3bf0);
  box-shadow: 0 6px 22px rgba(77, 107, 254, 0.35);
}
.btn-primary:hover { box-shadow: 0 10px 30px rgba(77, 107, 254, 0.5); }
.btn-ghost { background: rgba(255,255,255,0.05); border-color: var(--line-strong); color: var(--text); }
.btn-ghost:hover { background: rgba(255,255,255,0.1); }
.btn-outline { border-color: var(--line-strong); color: var(--text-dim); }
.btn-outline:hover { border-color: var(--brand); color: var(--text); }
.btn-lg { font-size: 16px; padding: 14px 26px; border-radius: 14px; }
.btn-sm { font-size: 13px; padding: 7px 14px; border-radius: 10px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 104px 0 88px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(720px 380px at 50% -120px, rgba(77, 107, 254, 0.35), transparent 65%),
    radial-gradient(560px 320px at 85% 20%, rgba(56, 189, 248, 0.12), transparent 60%),
    radial-gradient(520px 320px at 12% 30%, rgba(120, 90, 255, 0.10), transparent 60%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(148,163,184,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 30%, transparent 75%);
  pointer-events: none;
}
.hero-inner { position: relative; display: flex; flex-direction: column; align-items: center; }
.eyebrow {
  font-family: var(--mono); font-size: 13px; letter-spacing: 2px;
  color: #8fa3ff; text-transform: uppercase;
  border: 1px solid rgba(77,107,254,0.45); border-radius: 999px;
  padding: 6px 16px; margin-bottom: 28px;
  background: rgba(77,107,254,0.1);
}
.hero h1 { font-size: clamp(34px, 5.6vw, 62px); font-weight: 800; letter-spacing: -0.5px; }
.hero-sub {
  margin-top: 22px; max-width: 640px;
  font-size: clamp(15px, 1.6vw, 17px); color: var(--text-dim);
}
/* Hero 只保留说明文案：按钮/命令已移入下方展示卡 */
.scroll-cue {
  margin-top: 52px; color: var(--text-faint);
  animation: bob 2.2s ease-in-out infinite;
}
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(6px); } }

/* ---------- 通宽大展示栏 ---------- */
.panel-row { padding: 34px 0; scroll-margin-top: 70px; }
.row-web  { background: linear-gradient(180deg, transparent, rgba(77,107,254,0.06) 18%, rgba(77,107,254,0.06) 82%, transparent); }
.row-desktop { background: linear-gradient(180deg, transparent, rgba(56,189,248,0.05) 18%, rgba(56,189,248,0.05) 82%, transparent); }

.panel {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 34px;
  align-items: center;
  border-radius: 26px;
  padding: clamp(34px, 5vw, 58px) clamp(28px, 5vw, 60px);
  background:
    radial-gradient(640px 300px at 12% -40%, rgba(77,107,254,0.16), transparent 60%),
    radial-gradient(520px 300px at 105% 115%, rgba(56,189,248,0.10), transparent 60%),
    linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line-strong);
  box-shadow: 0 30px 80px rgba(0,0,0,0.42);
  position: relative;
  overflow: hidden;
}
.panel::before {
  content: "";
  position: absolute; inset: 0 0 auto 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(148,163,184,0.5), transparent);
}
.row-tag {
  display: inline-block;
  font-size: 12.5px; font-weight: 600; letter-spacing: 1px;
  color: #9db2ff;
  border: 1px solid rgba(77,107,254,0.4);
  background: rgba(77,107,254,0.12);
  padding: 5px 14px; border-radius: 999px; margin-bottom: 20px;
}
.row-tag em { font-style: normal; color: #7dd3fc; }
.panel h2 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; letter-spacing: -0.3px; }
.lead { margin-top: 18px; color: var(--text-dim); font-size: 15.5px; }

.feature-list {
  list-style: none; margin: 28px 0 0; padding: 0;
  display: grid; gap: 18px;
}
.feature-list li {
  display: flex; gap: 12px; align-items: flex-start;
  color: var(--text-dim); font-size: 14px;
}
.feature-list svg {
  flex: none; width: 18px; height: 18px; margin-top: 3px;
  color: var(--brand-2);
}
.feature-list b { display: block; color: var(--text); font-size: 15px; margin-bottom: 1px; }
.row-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }

/* 右侧演示窗口 */
.panel-aside { display: flex; justify-content: center; }
.mock-window {
  width: min(100%, 400px);
  border-radius: 16px; overflow: hidden;
  border: 1px solid var(--line-strong);
  background: #0a101f;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.03);
  transform: perspective(900px) rotateY(-6deg) rotateX(2deg);
  transition: transform 0.35s ease;
}
.panel:hover .mock-window { transform: perspective(900px) rotateY(-1deg) rotateX(0.5deg); }
.mock-bar {
  display: flex; gap: 7px; padding: 12px 14px;
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid var(--line);
}
.mock-bar span { width: 10px; height: 10px; border-radius: 50%; }
.mock-bar span:nth-child(1) { background: #ff5f57; }
.mock-bar span:nth-child(2) { background: #febc2e; }
.mock-bar span:nth-child(3) { background: #28c840; }
.mock-code {
  padding: 20px 22px 24px;
  font-family: var(--mono); font-size: 13.5px; line-height: 2.1;
}
.mock-code i { font-style: normal; color: var(--brand-2); }
.mock-code b { color: #c7d6ff; font-weight: 600; }
.mock-code .dim { color: var(--text-faint); }
.mock-code .ok { color: var(--green); }

/* ---------- 下载区 ---------- */
.download-box {
  margin-top: 34px;
  border: 1px dashed rgba(148,163,184,0.35);
  border-radius: 18px;
  background: rgba(255,255,255,0.03);
  padding: 22px 24px;
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.download-box:hover { border-color: rgba(56,189,248,0.6); background: rgba(56,189,248,0.05); }
.download-head { display: flex; align-items: center; gap: 14px; min-width: 0; flex: 1 1 260px; }
.dl-badge {
  flex: none; width: 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: 0 8px 22px rgba(56,189,248,0.3);
}
.dl-meta h3 { font-size: 16px; font-weight: 700; }
.dl-meta p { font-size: 13px; color: var(--text-dim); margin-top: 3px; }
.btn-download { padding: 14px 22px; font-size: 15px; }
.dl-note { flex-basis: 100%; font-size: 12.5px; color: var(--text-faint); margin: 2px 0 0; }

.mock-code .cm { margin: 6px 0 2px; }
.mock-code .c { color: var(--text-faint); }
.mock-code .p { color: var(--green); }
.mock-code .out { color: #7dd3fc; }
.mock-bar em {
  font-style: normal; margin-left: 8px;
  color: var(--text-faint); font-size: 11px; letter-spacing: 0.3px;
  font-family: var(--mono);
}
.term-window .mock-code {
  font-size: 12.5px;
}
.term-window .mock-code p { margin: 0; line-height: 2.05; }

/* Desktop 演示：真实窗口截图 */
.desktop-art { text-align: center; }
.win-frame {
  margin: 0 auto;
  width: min(100%, 360px);
  border-radius: 14px; overflow: hidden;
  border: 1px solid var(--line-strong);
  background: #0d1526;
  box-shadow: 0 28px 64px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.03);
  transition: transform 0.35s ease;
}
.panel:hover .win-frame { transform: translateY(-4px); }
.win-titlebar {
  display: flex; align-items: center; gap: 9px;
  padding: 10px 14px;
  background: linear-gradient(180deg, #232c44, #161e31);
  border-bottom: 1px solid var(--line);
}
.win-logo {
  flex: none; width: 14px; height: 14px; border-radius: 4px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.15);
}
.win-title {
  flex: 1; text-align: left;
  font-size: 12.5px; font-weight: 600; color: #cfd9f0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.win-controls {
  display: flex; align-items: center; gap: 10px;
  color: #8b96ad;
}
.win-controls svg:last-child { color: #ff7b72; }
.win-shot {
  display: block; width: 100%; height: auto;
  background: #fff;
}
.art-caption { margin-top: 14px; font-size: 12.5px; color: var(--text-faint); }

/* ---------- 三步上手 ---------- */
.steps { padding: 30px 0 70px; scroll-margin-top: 70px; }
.section-title { text-align: center; font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin-bottom: 40px; }
.step-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}
.step {
  border: 1px solid var(--line);
  border-radius: 18px; padding: 26px;
  background: linear-gradient(180deg, rgba(255,255,255,0.03), transparent);
  position: relative;
}
.step-num {
  position: absolute; top: 20px; right: 22px;
  font-family: var(--mono); font-size: 30px; font-weight: 800;
  color: rgba(77,107,254,0.28);
}
.step h3 { font-size: 16px; margin-bottom: 8px; }
.step p { font-size: 13.5px; color: var(--text-dim); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
  padding: 40px 0 46px;
}
.footer-inner { display: flex; flex-direction: column; align-items: center; gap: 14px; text-align: center; }
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-brand .brand-name { font-size: 14px; }
.footer-note { max-width: 680px; font-size: 12.5px; color: var(--text-faint); }
.footer-note a { color: var(--text-dim); border-bottom: 1px dotted var(--text-faint); }
.footer-note a:hover { color: #8fa3ff; }
.footer-links { font-size: 12.5px; color: var(--text-faint); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: center; }
.footer-links a:hover { color: var(--text-dim); }
.sep { color: var(--line-strong); }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .panel { grid-template-columns: 1fr; }
  .panel-aside { order: -1; }
  .mock-window, .desktop-screen { transform: none !important; }
  .step-grid { grid-template-columns: 1fr; }
  .brand-host { display: none; }
  .header-nav > a:not(.btn) { display: none; }
}
@media (max-width: 560px) {
  .container { padding: 0 20px; }
  .hero { padding: 70px 0 64px; }
  .only-desktop { display: none; }
  .only-mobile { display: block; }
  .row-actions .btn { width: 100%; }
  .btn-download { width: 100%; }
}