/* ============================================================
   打龟 DaGui — 官网样式表（黑曜石 Obsidian 深色主题）
   Token 取自 App 的 DesignSystem/Theme.swift (.obsidian)
   - 纯静态、PC + 移动端响应式、暗黑主题
   ============================================================ */

:root {
  /* —— 黑曜石中性色 —— */
  --bg:        #0E1113;   /* paper  近黑底 */
  --bg-2:      #12161A;   /* 段落交替底 */
  --sunken:    #171B1F;   /* paper2 凹陷/轨道 */
  --card:      #1B1F24;   /* 卡片 */
  --card-2:    #20252B;   /* 卡片高一层 */
  --line:      #2B3137;   /* 描边 */
  --hairline:  #23282D;   /* 柔和分隔 */

  --ink:       #F2F5F6;   /* 主文字 */
  --ink-soft:  #99A2A9;   /* 次文字 */
  --ink-faint: #646C74;   /* 弱文字 */

  /* —— 品牌强调色 —— */
  --teal:      #2FD6A6;   /* 薄荷青 主色 */
  --teal-d:    #19B98A;
  --teal-tint: #15352C;
  --coral:     #FF6A45;   /* 珊瑚橙 核心动作 */
  --coral-d:   #ED5026;
  --coral-tint:#3A201A;

  --good:      #34D88E;
  --warn:      #F4C13D;
  --poor:      #FF5A4A;
  --luya:      #4F93F0;   /* 路亚蓝 */

  /* —— 渐变（取自 App 渐变 hero 卡） —— */
  --grad-teal:   linear-gradient(135deg, #1FE3C2 0%, #12B79A 100%);
  --grad-coral:  linear-gradient(135deg, #FF8A3D 0%, #FF5E1F 100%);
  --grad-purple: linear-gradient(135deg, #8A5BFF 0%, #6536E6 100%);
  --grad-blue:   linear-gradient(135deg, #5B9BFF 0%, #2E6BF0 100%);

  /* —— 几何 —— */
  --r-sm: 14px;
  --r-md: 18px;
  --r-lg: 26px;
  --r-xl: 32px;
  --r-pill: 999px;

  /* —— 字体 —— */
  --font-body: "PingFang SC", -apple-system, BlinkMacSystemFont, "Noto Sans SC",
               "Microsoft YaHei", "Segoe UI", Roboto, system-ui, sans-serif;
  --font-num:  "Manrope", "PingFang SC", -apple-system, "Noto Sans SC", sans-serif;

  --maxw: 1160px;
  --nav-h: 64px;
}

/* ============================================================ Reset */
*, *::before, *::after { box-sizing: border-box; }
* { -webkit-tap-highlight-color: transparent; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }

/* dim global texture: faint dot halftone + corner glows */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(900px 600px at 12% -8%, rgba(47,214,166,.10), transparent 60%),
    radial-gradient(820px 560px at 92% 4%, rgba(255,106,69,.10), transparent 58%),
    var(--bg);
}
body::after {
  content: "";
  position: fixed; inset: 0; z-index: -1; opacity: .5;
  pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,.022) 1px, transparent 1.4px);
  background-size: 26px 26px;
}

/* ============================================================ Layout */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.section { padding: 92px 0; position: relative; }
.section--alt { background: linear-gradient(180deg, transparent, rgba(255,255,255,.012) 50%, transparent); }
.section__head { max-width: 720px; margin: 0 auto 52px; text-align: center; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 800; letter-spacing: .22em;
  text-transform: uppercase; color: var(--teal);
  font-family: var(--font-num);
}
.eyebrow::before { content: ""; width: 18px; height: 3px; border-radius: 3px; background: var(--coral); }

h1, h2, h3 { margin: 0; line-height: 1.12; letter-spacing: -.01em; font-weight: 800; }
.section__head h2 { font-size: clamp(28px, 4.4vw, 44px); margin: 14px 0 14px; }
.section__head p { color: var(--ink-soft); font-size: clamp(15px, 1.6vw, 18px); margin: 0; }

.num { font-family: var(--font-num); font-style: italic; font-weight: 800;
       font-variant-numeric: tabular-nums; letter-spacing: -.02em; }

/* ============================================================ Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--font-body); font-weight: 800; font-size: 16px;
  padding: 13px 22px; border-radius: var(--r-pill); border: 1px solid transparent;
  cursor: pointer; transition: transform .14s ease, box-shadow .2s ease, background .2s ease, border-color .2s;
  white-space: nowrap; line-height: 1;
}
.btn:active { transform: translateY(1px) scale(.985); }
.btn--coral { background: var(--coral); color: #fff; box-shadow: 0 10px 28px -8px rgba(255,106,69,.55); }
.btn--coral:hover { background: var(--coral-d); box-shadow: 0 14px 34px -8px rgba(255,106,69,.65); }
.btn--teal { background: var(--teal); color: #06231C; box-shadow: 0 10px 28px -8px rgba(47,214,166,.5); }
.btn--teal:hover { background: var(--teal-d); }
.btn--ghost { background: rgba(255,255,255,.04); color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { background: rgba(255,255,255,.08); border-color: #3a424a; }
.btn--lg { padding: 16px 28px; font-size: 17px; }

/* App Store style badge */
.appstore {
  display: inline-flex; align-items: center; gap: 12px;
  background: #000; border: 1px solid #2c2c2e; color: #fff;
  padding: 11px 18px 11px 16px; border-radius: 14px; cursor: pointer;
  transition: border-color .2s, transform .14s;
}
.appstore:hover { border-color: #48484a; }
.appstore:active { transform: translateY(1px); }
.appstore svg { width: 26px; height: 26px; flex: none; }
.appstore__txt { display: flex; flex-direction: column; line-height: 1.15; text-align: left; }
.appstore__txt small { font-size: 10.5px; color: #c7c7cc; font-weight: 600; }
.appstore__txt strong { font-size: 18px; font-weight: 700; letter-spacing: .01em; }
.badge-soon {
  font-size: 11px; font-weight: 800; color: var(--coral);
  background: var(--coral-tint); border: 1px solid rgba(255,106,69,.35);
  padding: 4px 10px; border-radius: var(--r-pill); letter-spacing: .04em;
}
.badge-live {
  font-size: 11px; font-weight: 800; color: #34d399;
  background: rgba(52,211,153,.12); border: 1px solid rgba(52,211,153,.35);
  padding: 4px 10px; border-radius: var(--r-pill); letter-spacing: .04em;
}

/* ============================================================ Nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(14,17,19,.72);
  backdrop-filter: saturate(140%) blur(16px);
  -webkit-backdrop-filter: saturate(140%) blur(16px);
  border-bottom: 1px solid transparent; transition: border-color .25s, background .25s;
}
.nav.scrolled { border-bottom-color: var(--hairline); background: rgba(14,17,19,.86); }
.nav .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 800; font-size: 18px; letter-spacing: -.01em; }
.brand img { width: 32px; height: 32px; border-radius: 9px; }
.brand small { color: var(--ink-faint); font-weight: 700; font-size: 12px; letter-spacing: .14em; font-family: var(--font-num); }
.nav__links { display: flex; align-items: center; gap: 4px; }
.nav__links a {
  padding: 8px 14px; border-radius: var(--r-pill); font-size: 15px; font-weight: 600;
  color: var(--ink-soft); transition: color .18s, background .18s;
}
.nav__links a:hover { color: var(--ink); background: rgba(255,255,255,.05); }
.nav__cta { display: flex; align-items: center; gap: 10px; }
.nav__toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line);
  background: rgba(255,255,255,.04); border-radius: 12px; cursor: pointer; padding: 0;
  align-items: center; justify-content: center;
}
.nav__toggle span, .nav__toggle span::before, .nav__toggle span::after {
  content: ""; display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px;
  transition: transform .25s, opacity .2s; position: relative;
}
.nav__toggle span::before { position: absolute; top: -6px; }
.nav__toggle span::after { position: absolute; top: 6px; }
.nav.open .nav__toggle span { background: transparent; }
.nav.open .nav__toggle span::before { transform: translateY(6px) rotate(45deg); }
.nav.open .nav__toggle span::after { transform: translateY(-6px) rotate(-45deg); }

/* ============================================================ Hero */
.hero { padding: calc(var(--nav-h) + 70px) 0 70px; position: relative; overflow: hidden; }
.hero__grid {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center;
}
.hero__copy h1 { font-size: clamp(40px, 6.4vw, 68px); line-height: 1.02; margin: 16px 0 10px; }
.hero__copy h1 .accent { color: var(--coral); }
.hero__logo-row { display: flex; align-items: center; gap: 16px; margin-bottom: 6px; }
.hero__logo-row img { width: 72px; height: 72px; border-radius: 18px; box-shadow: 0 12px 40px -10px rgba(0,0,0,.7); }
.hero__tagline { font-size: clamp(19px, 2.4vw, 26px); font-weight: 800; color: var(--ink); margin: 0 0 14px; }
.hero__tagline .sep { color: var(--coral); margin: 0 4px; }
.hero__lead { font-size: clamp(15px, 1.7vw, 18px); color: var(--ink-soft); max-width: 520px; margin: 0 0 28px; }
.hero__actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.hero__note { margin-top: 14px; font-size: 13px; color: var(--ink-faint); display: flex; align-items: center; gap: 8px; }
.hero__note svg { width: 15px; height: 15px; color: var(--teal); }

/* hero stat strip */
.stats { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 40px; }
.stat {
  flex: 1 1 calc(50% - 7px); min-width: 130px;
  background: var(--card); border: 1px solid var(--hairline); border-radius: var(--r-md);
  padding: 16px 18px;
}
.stat__num { font-family: var(--font-num); font-style: italic; font-weight: 800; font-size: 30px;
             letter-spacing: -.02em; color: var(--ink); line-height: 1; }
.stat__num.teal { color: var(--teal); }
.stat__num.coral { color: var(--coral); }
.stat__label { font-size: 12.5px; color: var(--ink-soft); margin-top: 7px; font-weight: 600; }

/* ============================================================ Phone mockup */
.phone {
  position: relative; width: 300px; height: 622px; margin: 0 auto;
  background: #05070a; border-radius: 46px; padding: 9px;
  box-shadow: 0 50px 90px -30px rgba(0,0,0,.85), 0 0 0 1px rgba(255,255,255,.06) inset, 0 0 0 2px #1b1f24;
  flex: none;
}
.phone__screen {
  position: relative; width: 100%; height: 100%; border-radius: 38px; overflow: hidden;
  background: var(--bg); color: var(--ink);
  background-image: radial-gradient(rgba(255,255,255,.022) 1px, transparent 1.3px);
  background-size: 22px 22px;
}
.phone__island {
  position: absolute; top: 11px; left: 50%; transform: translateX(-50%);
  width: 92px; height: 26px; background: #000; border-radius: 16px; z-index: 30;
}
.phone__statusbar {
  position: absolute; top: 0; left: 0; right: 0; height: 44px; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; padding: 15px 22px 0;
  font-size: 12px; font-weight: 700; color: var(--ink); font-family: var(--font-num);
}
.phone__statusbar .sb-r { display: flex; gap: 5px; align-items: center; opacity: .9; }
.phone__body { position: absolute; inset: 0; padding: 50px 14px 70px; overflow: hidden; }
.phone__h { font-size: 21px; font-weight: 800; letter-spacing: -.01em; margin: 0 0 12px; display:flex; align-items:center; gap:6px; }
.phone__h .loc { font-size: 12px; color: var(--ink-soft); font-weight: 600; }

/* hero device floating glow */
.hero__device { position: relative; }
.hero__device::before {
  content: ""; position: absolute; inset: -8% -4% -4%; z-index: -1;
  background: radial-gradient(closest-side, rgba(47,214,166,.22), transparent 70%);
  filter: blur(10px);
}
.float { animation: float-y 6s ease-in-out infinite; }
@keyframes float-y { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@media (prefers-reduced-motion: reduce) { .float { animation: none; } }

/* —— in-screen UI primitives —— */
.m-card { background: var(--card); border: 1px solid var(--hairline); border-radius: 16px; padding: 12px; }
.m-grad { border-radius: 18px; padding: 12px 14px; color: #fff; position: relative; overflow: hidden; }
.m-grad.teal { background: var(--grad-teal); }
.m-grad.coral { background: var(--grad-coral); }
.m-grad.purple { background: var(--grad-purple); }
.m-grad.blue { background: var(--grad-blue); }
.m-grad__fish { position: absolute; right: -6px; bottom: -10px; font-size: 56px; opacity: .16; }
.m-chip {
  display: inline-flex; align-items: center; gap: 5px; font-size: 11px; font-weight: 700;
  padding: 5px 10px; border-radius: var(--r-pill); border: 1px solid var(--line);
  background: var(--sunken); color: var(--ink-soft); white-space: nowrap;
}
.m-chip.on { background: var(--teal-tint); color: var(--teal); border-color: rgba(47,214,166,.3); }
.m-chip.coral { background: var(--coral-tint); color: var(--coral); border-color: rgba(255,106,69,.3); }
.m-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.m-sech { display: flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 800; margin: 14px 2px 9px; }
.m-sech::before { content: ""; width: 5px; height: 15px; border-radius: 3px; background: var(--coral); }

/* gauge */
.gauge { position: relative; width: 200px; margin: 4px auto 2px; }
.gauge svg { width: 100%; height: auto; overflow: visible; }
.gauge__center { position: absolute; left: 0; right: 0; top: 47%; text-align: center; transform: translateY(-12%); }
.gauge__score { font-family: var(--font-num); font-style: italic; font-weight: 800; font-size: 52px; line-height: .9; color: var(--ink); }
.gauge__score sub { font-size: 17px; color: var(--ink-faint); font-style: italic; vertical-align: baseline; }
.gauge__status { font-size: 13px; font-weight: 800; color: var(--good); margin-top: 2px; }
.gauge__quip { font-size: 11.5px; color: var(--ink-soft); margin-top: 2px; }

/* factor rows */
.fac { display: flex; align-items: center; gap: 9px; padding: 8px 0; border-bottom: 1px solid var(--hairline); }
.fac:last-child { border-bottom: 0; }
.fac__dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.fac__name { font-size: 12.5px; font-weight: 700; flex: 1; min-width: 0; }
.fac__name span { display: block; font-size: 11px; color: var(--ink-faint); font-weight: 600; }
.fac__bar { width: 56px; height: 7px; border-radius: 4px; background: var(--sunken); overflow: hidden; flex: none; }
.fac__bar i { display: block; height: 100%; border-radius: 4px; }
.fac__w { font-family: var(--font-num); font-style: italic; font-weight: 800; font-size: 13px; color: var(--ink-soft); width: 34px; text-align: right; }

/* mini bars chart */
.mbars { display: flex; align-items: flex-end; gap: 8px; height: 84px; padding: 4px 2px 0; }
.mbars .b { flex: 1; border-radius: 4px 4px 0 0; background: var(--teal-tint); position: relative; }
.mbars .b.peak { background: var(--coral); }
.mbars .b span { position: absolute; bottom: -18px; left: 0; right: 0; text-align: center; font-size: 9.5px; color: var(--ink-faint); font-weight: 700; }

/* species grid */
.sgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; }
.sgrid .sp { background: var(--sunken); border: 1px solid var(--hairline); border-radius: 12px;
  padding: 10px 4px; text-align: center; font-size: 11px; font-weight: 700; }
.sgrid .sp.on { background: var(--teal-tint); border-color: rgba(47,214,166,.4); color: var(--teal); }
.sgrid .sp .ic { font-size: 18px; display: block; margin-bottom: 3px; }

/* stepper */
.stepper { display: flex; align-items: center; justify-content: center; gap: 16px; padding: 8px 0; }
.stepper .pm { width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--line); background: var(--sunken);
  display: flex; align-items: center; justify-content: center; color: var(--ink-soft); font-size: 18px; }
.stepper .pm.plus { color: var(--teal); border-color: rgba(47,214,166,.4); }
.stepper .val { font-family: var(--font-num); font-style: italic; font-weight: 800; font-size: 30px; min-width: 70px; text-align: center; }
.stepper .val small { font-size: 14px; color: var(--ink-faint); }

/* phone tab bar + fab */
.phone__tabbar {
  position: absolute; left: 0; right: 0; bottom: 0; height: 64px; z-index: 18;
  background: rgba(20,24,28,.92); border-top: 1px solid var(--hairline);
  display: flex; align-items: flex-start; justify-content: space-around; padding: 9px 10px 0;
  backdrop-filter: blur(8px);
}
.phone__tab { display: flex; flex-direction: column; align-items: center; gap: 3px; font-size: 9.5px; font-weight: 700; color: var(--ink-faint); flex: 1; }
.phone__tab.on { color: var(--teal); }
.phone__tab svg { width: 19px; height: 19px; }
.phone__tab.spacer { opacity: 0; }
.phone__fab {
  position: absolute; left: 50%; bottom: 36px; transform: translateX(-50%); z-index: 19;
  width: 54px; height: 54px; border-radius: 50%; background: var(--coral);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 22px -4px rgba(255,106,69,.6); border: 2px solid var(--bg);
}
.phone__fab svg { width: 24px; height: 24px; color: #fff; }
.phone__fab-label { position: absolute; left: 50%; bottom: 21px; transform: translateX(-50%); z-index: 19;
  font-size: 9px; font-weight: 800; color: var(--coral); }

/* ============================================================ Features */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feat {
  background: var(--card); border: 1px solid var(--hairline); border-radius: var(--r-lg);
  padding: 26px 24px; transition: transform .25s ease, border-color .25s, background .25s;
  position: relative; overflow: hidden;
}
.feat:hover { transform: translateY(-4px); border-color: var(--line); background: var(--card-2); }
.feat__ic {
  width: 50px; height: 50px; border-radius: 15px; display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px; color: #fff;
}
.feat__ic svg { width: 26px; height: 26px; }
.feat h3 { font-size: 20px; margin-bottom: 4px; }
.feat__sub { color: var(--teal); font-size: 13px; font-weight: 700; margin-bottom: 12px; }
.feat__desc { color: var(--ink-soft); font-size: 14.5px; margin: 0 0 14px; }
.feat__list li { position: relative; padding-left: 20px; font-size: 13.5px; color: var(--ink-soft); margin: 7px 0; line-height: 1.5; }
.feat__list li::before { content: ""; position: absolute; left: 2px; top: 9px; width: 7px; height: 7px; border-radius: 2px;
  background: var(--coral); }
.feat--wide { grid-column: span 1; }

/* ============================================================ Index spotlight (white-box) */
.spotlight { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.spotlight__copy h2 { font-size: clamp(26px, 3.6vw, 38px); margin: 14px 0 16px; }
.spotlight__copy p { color: var(--ink-soft); font-size: 16px; margin: 0 0 14px; }
.spotlight__points { margin-top: 22px; }
.spotlight__points li { display: flex; gap: 12px; margin: 16px 0; }
.spotlight__points .pt-ic { width: 36px; height: 36px; border-radius: 11px; flex: none; background: var(--teal-tint);
  color: var(--teal); display: flex; align-items: center; justify-content: center; }
.spotlight__points .pt-ic svg { width: 18px; height: 18px; }
.spotlight__points strong { display: block; font-size: 15.5px; margin-bottom: 2px; }
.spotlight__points span { color: var(--ink-soft); font-size: 14px; }

.panel { background: var(--card); border: 1px solid var(--hairline); border-radius: var(--r-lg); padding: 22px; }
.panel__head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 16px; }
.panel__head .t { font-size: 14px; font-weight: 800; color: var(--ink-soft); }
.panel__big { font-family: var(--font-num); font-style: italic; font-weight: 800; font-size: 46px; color: var(--ink); line-height: 1; }
.panel__big sub { font-size: 16px; color: var(--ink-faint); }

/* ============================================================ Screens showcase */
.showcase { display: flex; gap: 28px; justify-content: center; flex-wrap: wrap; align-items: flex-start; }
.showcase__item { width: 300px; text-align: center; }
.showcase__item .phone { transform: scale(.92); transform-origin: top center; }
.showcase__cap { margin-top: 8px; }
.showcase__cap strong { display: block; font-size: 16px; }
.showcase__cap span { font-size: 13px; color: var(--ink-soft); }

/* ============================================================ Why / differentiators */
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.why {
  background: var(--card); border: 1px solid var(--hairline); border-radius: var(--r-lg);
  padding: 28px; display: flex; gap: 18px; align-items: flex-start;
}
.why__n { font-family: var(--font-num); font-style: italic; font-weight: 800; font-size: 30px; color: var(--coral);
  line-height: 1; flex: none; width: 44px; }
.why h3 { font-size: 19px; margin-bottom: 8px; }
.why p { color: var(--ink-soft); font-size: 14.5px; margin: 0; }

/* ============================================================ FAQ */
.faq { max-width: 800px; margin: 0 auto; }
.faq details {
  border: 1px solid var(--hairline); border-radius: var(--r-md); background: var(--card);
  margin-bottom: 12px; overflow: hidden; transition: border-color .2s;
}
.faq details[open] { border-color: var(--line); }
.faq summary {
  list-style: none; cursor: pointer; padding: 19px 22px; font-size: 16.5px; font-weight: 700;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .ic { flex: none; width: 22px; height: 22px; position: relative; transition: transform .25s; }
.faq summary .ic::before, .faq summary .ic::after {
  content: ""; position: absolute; background: var(--teal); border-radius: 2px;
  top: 50%; left: 50%; transform: translate(-50%, -50%);
}
.faq summary .ic::before { width: 14px; height: 2.4px; }
.faq summary .ic::after { width: 2.4px; height: 14px; transition: transform .25s; }
.faq details[open] summary .ic::after { transform: translate(-50%, -50%) scaleY(0); }
.faq__a { padding: 0 22px 20px; color: var(--ink-soft); font-size: 15px; line-height: 1.7; }

/* ============================================================ CTA band */
.cta-band { text-align: center; }
.cta-band__inner {
  background: linear-gradient(135deg, rgba(47,214,166,.10), rgba(255,106,69,.10));
  border: 1px solid var(--line); border-radius: var(--r-xl); padding: 56px 32px;
  position: relative; overflow: hidden;
}
.cta-band__inner::before {
  content: ""; position: absolute; inset: 0; z-index: 0; opacity: .6;
  background: radial-gradient(600px 300px at 50% -30%, rgba(47,214,166,.18), transparent 70%);
}
.cta-band__inner > * { position: relative; z-index: 1; }
.cta-band h2 { font-size: clamp(26px, 4vw, 40px); margin-bottom: 12px; }
.cta-band p { color: var(--ink-soft); max-width: 560px; margin: 0 auto 28px; }
.cta-band .hero__actions { justify-content: center; }

/* ============================================================ Footer */
.footer { border-top: 1px solid var(--hairline); padding: 56px 0 40px; background: var(--bg-2); }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; }
.footer__brand .brand { margin-bottom: 14px; }
.footer__brand p { color: var(--ink-soft); font-size: 14px; max-width: 320px; margin: 0 0 16px; }
.footer__col h4 { font-size: 13px; color: var(--ink-faint); text-transform: uppercase; letter-spacing: .12em;
  margin: 0 0 14px; font-family: var(--font-num); font-weight: 800; }
.footer__col a, .footer__col p { display: block; color: var(--ink-soft); font-size: 14.5px; margin: 9px 0; transition: color .18s; }
.footer__col a:hover { color: var(--teal); }
.footer__bottom {
  border-top: 1px solid var(--hairline); margin-top: 40px; padding-top: 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  color: var(--ink-faint); font-size: 13px;
}
.footer__weather { display: inline-flex; align-items: center; gap: 7px; color: var(--ink-faint); }
.footer__weather svg { width: 15px; height: 15px; }

/* ICP / 公安备案 */
.beian {
  text-align: center; margin-top: 22px; padding-top: 20px;
  border-top: 1px solid var(--hairline);
  color: var(--ink-faint); font-size: 12.5px; line-height: 2;
}
.beian a { color: var(--ink-faint); transition: color .18s; }
.beian a:hover { color: var(--teal); }
.beian .dot { margin: 0 8px; opacity: .5; }
.beian .gongan { display: inline-flex; align-items: center; gap: 5px; }
.beian .gongan svg { width: 13px; height: 13px; opacity: .85; }

/* ============================================================ Doc pages (privacy / support / terms) */
.doc { padding: calc(var(--nav-h) + 56px) 0 80px; }
.doc__wrap { max-width: 820px; margin: 0 auto; }
.doc__back { display: inline-flex; align-items: center; gap: 7px; color: var(--ink-soft); font-size: 14px; font-weight: 600; margin-bottom: 26px; }
.doc__back:hover { color: var(--teal); }
.doc__back svg { width: 16px; height: 16px; }
.doc h1 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 8px; }
.doc__meta { color: var(--ink-faint); font-size: 14px; margin-bottom: 36px; padding-bottom: 24px; border-bottom: 1px solid var(--hairline); }
.doc__body h2 { font-size: 22px; margin: 38px 0 14px; padding-left: 14px; border-left: 4px solid var(--coral); }
.doc__body h3 { font-size: 17px; margin: 24px 0 8px; color: var(--ink); }
.doc__body p { color: var(--ink-soft); margin: 12px 0; line-height: 1.8; }
.doc__body ul, .doc__body ol { margin: 12px 0; padding-left: 4px; }
.doc__body li { color: var(--ink-soft); margin: 10px 0; line-height: 1.75; padding-left: 22px; position: relative; }
.doc__body ul li::before { content: ""; position: absolute; left: 4px; top: 11px; width: 7px; height: 7px;
  border-radius: 2px; background: var(--teal); }
.doc__body ol { counter-reset: li; list-style: none; }
.doc__body ol li { counter-increment: li; }
.doc__body ol li::before { content: counter(li); position: absolute; left: 0; top: 1px; color: var(--coral);
  font-weight: 800; font-family: var(--font-num); font-style: italic; }
.doc__body strong { color: var(--ink); }
.doc__body a { color: var(--teal); text-decoration: underline; text-underline-offset: 3px; word-break: break-all; }
.doc__body code { background: var(--sunken); border: 1px solid var(--hairline); border-radius: 6px;
  padding: 1px 6px; font-size: 13px; color: var(--teal); font-family: ui-monospace, "SF Mono", Menlo, monospace; word-break: break-all; }
.doc__body hr { border: 0; border-top: 1px solid var(--hairline); margin: 32px 0; }
.doc__body blockquote { border-left: 3px solid var(--line); background: var(--card); border-radius: 0 12px 12px 0;
  margin: 18px 0; padding: 14px 18px; color: var(--ink-soft); font-size: 14.5px; }

/* data practices table */
.dtable { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14px; }
.dtable th, .dtable td { text-align: left; padding: 12px 14px; border: 1px solid var(--hairline); vertical-align: top; }
.dtable th { background: var(--sunken); color: var(--ink); font-weight: 800; font-size: 13px; }
.dtable td { color: var(--ink-soft); }
.dtable tr:nth-child(even) td { background: rgba(255,255,255,.012); }

/* ============================================================ Reveal animation */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ============================================================ Responsive */
@media (max-width: 1024px) {
  .hero__grid { grid-template-columns: 1fr; gap: 48px; text-align: center; }
  .hero__copy { display: flex; flex-direction: column; align-items: center; }
  .hero__logo-row { justify-content: center; }
  .hero__lead { margin-left: auto; margin-right: auto; }
  .hero__actions { justify-content: center; }
  .stats { justify-content: center; }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .spotlight { grid-template-columns: 1fr; gap: 40px; }
  .spotlight__copy { text-align: center; }
  .spotlight__points li { text-align: left; }
}

@media (max-width: 760px) {
  .section { padding: 64px 0; }
  .nav__links, .nav__cta .appstore { display: none; }
  .nav__toggle { display: inline-flex; }
  /* mobile dropdown menu */
  .nav__links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: rgba(14,17,19,.97); backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--hairline); padding: 12px 18px 18px;
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: opacity .22s, transform .22s;
  }
  .nav.open .nav__links { display: flex; opacity: 1; transform: none; pointer-events: auto; }
  .nav__links a { padding: 13px 14px; font-size: 16px; }
  .feat-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 30px; }
  .footer__bottom { justify-content: center; text-align: center; }
  .hero { padding-top: calc(var(--nav-h) + 40px); }
  .phone { width: 270px; height: 560px; }
  .showcase__item { width: 270px; }
  /* tables scroll on small screens */
  .dtable-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .dtable { min-width: 560px; }
}

@media (max-width: 420px) {
  .container { padding: 0 16px; }
  .hero__actions { flex-direction: column; align-items: stretch; width: 100%; }
  .hero__actions .btn, .hero__actions .appstore { width: 100%; }
  .stat { min-width: calc(50% - 7px); flex: 1 1 calc(50% - 7px); }
}

/* ============================================================ 微信引导弹层 */
.wx-guide {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.wx-guide[hidden] { display: none; }
.wx-guide__mask {
  position: absolute; inset: 0;
  background: rgba(0,0,0,.6); backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.wx-guide__card {
  position: relative; z-index: 1;
  max-width: 340px; width: 100%;
  background: #1c2125; border: 1px solid #2c3338;
  border-radius: 18px; padding: 28px 24px 24px;
  text-align: center; color: var(--ink);
  box-shadow: 0 24px 60px rgba(0,0,0,.5);
}
.wx-guide__icon {
  width: 52px; height: 52px; margin: 0 auto 14px;
  display: flex; align-items: center; justify-content: center;
  color: var(--coral); background: var(--coral-tint);
  border-radius: 50%;
}
.wx-guide__icon svg { width: 28px; height: 28px; }
.wx-guide__card h3 { font-size: 17px; font-weight: 700; margin: 0 0 10px; }
.wx-guide__card p {
  font-size: 14px; line-height: 1.6; color: var(--ink-soft); margin: 0 0 20px;
}
.wx-guide__dots {
  display: inline-block; letter-spacing: .1em; color: var(--coral); font-weight: 800;
}
.wx-guide__card .btn { width: 100%; }