@charset "UTF-8";
/* ==========================================================================
   私脉官网样式表  siyuchat.cn official site
   --------------------------------------------------------------------------
   设计说明（刻意记录的取舍，避免无谓"再设计"）：
   1. 品牌绿取自产品真源：App 主题色 settings.theme.active = #2CBF67，
      Logo 内绿为 #6EDD7F，当前 App 图标（assets/img/logo.png）里的绿为 #109F42（已收进 --brand-600，UI 与图标同色）。此处把 #2CBF67 作为"品牌装饰绿"，
      正文可点击/按钮一律用更深的 --brand-700（白字对比 6.2:1，过 WCAG AA）。
   2. 中性色为冷灰（带极淡绿灰倾向），与品牌绿同族，不混暖灰。
   3. 单一强调色（绿）。Logo 里的琥珀点只存在于图片本身，不进 UI。
   4. 圆角规则（唯一一套，全站遵守）：卡片/面板 20px，按钮 全圆角，输入 12px，小标签 全圆角。
   5. 不引入任何构建步骤、外部 CDN、外链字体：整站可直接丢到 nginx 静态目录。
      （中文字体用系统栈：PingFang SC / 微软雅黑 / 思源黑体，这是中文站的正解，
       也顺带避免外链字体在国内被墙、以及首屏 FOIT。）
   6. 图标为 Carbon Icons 的真实 path（与 App 自身图标集一致），内联在页面里，
       这样 file:// 直接双击打开也不会掉图标。
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }

ul, ol { padding: 0; list-style: none; }

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

button { font: inherit; color: inherit; }

a { color: inherit; text-decoration: none; }

:where(a, button, input, summary):focus-visible {
  outline: 3px solid var(--brand-500);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 2. Tokens ---------- */
:root {
  /* 中性（冷灰，同族） */
  --c-950: #0a100d;
  --c-900: #131c17;
  --c-800: #26332c;
  --c-700: #3b4a42;
  --c-600: #58685f;
  --c-500: #76857c;
  --c-400: #9aa7a0;
  --c-300: #c3cdc7;
  --c-200: #dfe6e1;
  --c-100: #eef3ef;
  --c-50: #f6f9f7;
  --white: #ffffff;

  /* 品牌绿 */
  --brand-50: #eaf9f0;
  --brand-100: #d0f2de;
  --brand-200: #a5e6c1;
  --brand-300: #78db9f;
  --brand-400: #48ce7e;
  --brand-500: #2cbf67;
  --brand-600: #109f42; /* = assets/img/logo.png 里那抹绿的原始值，UI 绿与图标绿对齐 */
  --brand-700: #0f7038;
  --brand-800: #0b5528;
  --brand-900: #073719;

  --ink: var(--c-900);
  --text: var(--c-700);
  --text-muted: var(--c-600);

  --wrap: 1180px;
  --gut: clamp(1.15rem, 4vw, 2rem);
  --sect-y: clamp(3.5rem, 7vw, 6.5rem);

  --radius-surface: 20px;
  --radius-input: 12px;
  --radius-pill: 999px;

  --ring: 0 0 0 1px var(--c-200);
  --shadow-sm: 0 1px 2px rgba(10, 26, 18, .06), 0 1px 3px rgba(10, 26, 18, .04);
  --shadow-md: 0 10px 28px -14px rgba(9, 40, 24, .22), 0 2px 8px -4px rgba(9, 40, 24, .10);
  --shadow-lg: 0 28px 60px -28px rgba(9, 40, 24, .30);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC",
    "WenQuanYi Micro Hei", Roboto, Helvetica, Arial, sans-serif;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 3. Base typography ---------- */
body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--white);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  color: var(--ink);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.015em;
  text-wrap: balance;
}

h1 { font-size: clamp(2rem, 1.35rem + 2.7vw, 3.25rem); }
h2 { font-size: clamp(1.55rem, 1.25rem + 1.3vw, 2.3rem); }
h3 { font-size: 1.185rem; line-height: 1.4; }
h4 { font-size: 1.02rem; line-height: 1.45; }

p { text-wrap: pretty; }

strong, b { color: var(--ink); font-weight: 600; }

/* 键盘用户跳过导航直达正文（键盘聚焦时才出现） */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: .7rem 1.1rem;
  background: var(--brand-700);
  color: var(--white);
  border-radius: 0 0 var(--radius-input) 0;
  font-weight: 600;
}

.skip-link:focus {
  left: 0;
}

/* ---------- 4. Layout primitives ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.section { padding-block: var(--sect-y); }
.section--tight { padding-block: clamp(2.5rem, 5vw, 4rem); }
.section--tint { background: var(--c-50); }
.section--tint-green {
  background: linear-gradient(180deg, var(--brand-50) 0%, var(--white) 100%);
}

.lead {
  font-size: clamp(1rem, .96rem + .22vw, 1.1rem);
  color: var(--text-muted);
  max-width: 62ch;
}

.muted { color: var(--text-muted); }
.small { font-size: .875rem; }
.center { text-align: center; }
.center .lead { margin-inline: auto; }

.divider {
  height: 1px;
  background: var(--c-200);
  border: 0;
}

/* ---------- 5. Section head ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--brand-700);
  margin-bottom: .85rem;
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--brand-500);
  border-radius: 2px;
}

.section-head { max-width: 760px; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head h2 + .lead { margin-top: .9rem; }

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .72rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: var(--brand-700);
  color: var(--white);
  font-size: .95rem;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color .18s var(--ease), transform .12s var(--ease),
    box-shadow .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}

.btn:hover { background: var(--brand-800); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(1px); }

.btn--ghost {
  background: var(--white);
  color: var(--ink);
  border-color: var(--c-300);
}
.btn--ghost:hover {
  background: var(--c-50);
  border-color: var(--c-400);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}

.btn--onGreen {
  background: var(--white);
  color: var(--brand-800);
  border-color: transparent;
}
.btn--onGreen:hover { background: var(--brand-50); color: var(--brand-900); }

.btn--outlineOnGreen {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, .55);
}
.btn--outlineOnGreen:hover {
  background: rgba(255, 255, 255, .14);
  border-color: var(--white);
  color: var(--white);
}

.btn--lg { padding: .9rem 1.65rem; font-size: 1rem; }
.btn--sm { padding: .55rem 1rem; font-size: .875rem; }

.btn svg { width: 18px; height: 18px; flex: none; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: 1.85rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  color: var(--brand-700);
  font-weight: 600;
  border-bottom: 1px solid var(--brand-200);
  padding-bottom: 2px;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}
.text-link:hover { color: var(--brand-800); border-color: var(--brand-600); }
.text-link svg { width: 16px; height: 16px; }

/* ---------- 7. Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.site-header.is-stuck {
  border-bottom-color: var(--c-200);
  box-shadow: 0 6px 20px -18px rgba(9, 40, 24, .5);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  flex: none;
}

.brand__logo {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
}

.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name { font-weight: 700; color: var(--ink); font-size: 1.06rem; letter-spacing: .01em; }
.brand__sub { font-size: .68rem; color: var(--c-500); letter-spacing: .06em; }

.nav { margin-left: auto; display: flex; align-items: center; gap: .25rem; }

/* 🔴 用 :not(.btn) 把按钮排除掉：`.nav a`（0,1,1）比 `.btn`（0,1,0）权重高，
   否则导航里的「下载 App」会继承链接色（深灰）而不是按钮的白字，
   实测对比度掉到 1.5:1（几乎看不见）。 */
.nav a:not(.btn) {
  padding: .5rem .72rem;
  font-size: .92rem;
  font-weight: 500;
  color: var(--c-700);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: color .16s var(--ease), background-color .16s var(--ease);
}

.nav a:not(.btn):hover { color: var(--brand-800); background: var(--brand-50); }

.nav a:not(.btn)[aria-current="page"] { color: var(--brand-800); font-weight: 600; }

.site-header .btn { margin-left: .6rem; }

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--c-200);
  background: var(--white);
  border-radius: var(--radius-input);
  cursor: pointer;
}

.nav-toggle svg { width: 22px; height: 22px; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }
.nav-toggle[aria-expanded="true"] .icon-menu { display: none; }

.mobile-nav {
  display: none;
  border-bottom: 1px solid var(--c-200);
  background: var(--white);
  padding: .5rem var(--gut) 1.15rem;
}

.mobile-nav.is-open { display: block; }
.mobile-nav a:not(.btn) {
  display: block;
  padding: .78rem .25rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--c-800);
  border-bottom: 1px solid var(--c-100);
}
.mobile-nav a:not(.btn)[aria-current="page"] { color: var(--brand-800); font-weight: 600; }
.mobile-nav .btn { margin-top: 1rem; width: 100%; }

/* ---------- 8. Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(1100px 520px at 88% -12%, var(--brand-50) 0%, transparent 62%),
    radial-gradient(760px 420px at -10% 8%, var(--c-50) 0%, transparent 70%),
    var(--white);
  padding-block: clamp(2.75rem, 5vw, 4.5rem) clamp(3rem, 6vw, 5rem);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  gap: clamp(2rem, 5vw, 4.25rem);
  align-items: center;
  min-height: min(78dvh, 620px);
}

.hero h1 { margin-bottom: 1.15rem; }
.hero h1 .accent { color: var(--brand-700); }

.hero__lead {
  font-size: clamp(1.02rem, .97rem + .3vw, 1.15rem);
  color: var(--text-muted);
  max-width: 34rem;
}

.hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .75rem;
  margin-top: 1.5rem;
}

.fact {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .38rem .8rem .38rem .62rem;
  background: var(--white);
  border: 1px solid var(--c-200);
  border-radius: var(--radius-pill);
  font-size: .84rem;
  font-weight: 500;
  color: var(--c-700);
}

.fact svg { width: 16px; height: 16px; color: var(--brand-600); flex: none; }

/* 品牌证言卡（右侧）：绿底 + App 图标 + 口号 + 能力标签 */
/* 品牌绿面板：渐变特意止于 --brand-700（不再往 --brand-600/#109F42 走），
   因为白字压在最亮那一端时对比度只有 3.5:1，够不上 AA。
   收深到 --brand-700 后最差端位也有 6.2:1，绿色观感不受影响。 */
.app-card {
  position: relative;
  background: linear-gradient(155deg, var(--brand-900) 0%, var(--brand-800) 42%, var(--brand-700) 100%);
  border-radius: 28px;
  padding: clamp(1.6rem, 3.4vw, 2.4rem);
  color: var(--white);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.app-card::after {
  content: "";
  position: absolute;
  inset: -40% -30% auto auto;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, .22) 0%, transparent 68%);
  pointer-events: none;
}

.app-card__top {
  display: flex;
  align-items: center;
  gap: 1rem;
  position: relative;
}

.app-card__icon {
  width: 74px;
  height: 74px;
  border-radius: 20px;
  background: var(--white);
  padding: 6px;
  flex: none;
  box-shadow: 0 12px 26px -14px rgba(0, 0, 0, .5);
}

.app-card__name { font-size: 1.6rem; font-weight: 700; color: var(--white); line-height: 1.2; }
.app-card__cat { font-size: .86rem; color: rgba(255, 255, 255, .82); margin-top: .18rem; }

.app-card__slogan {
  position: relative;
  margin-top: 1.5rem;
  font-size: 1.02rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, .95);
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, .22);
}

.app-card__chips {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1.35rem;
}

.app-card__chips li {
  padding: .35rem .75rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .16);
  border: 1px solid rgba(255, 255, 255, .26);
  font-size: .82rem;
  font-weight: 500;
  color: var(--white);
}

/* ---------- 9. Bento（产品展示） ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: clamp(.9rem, 1.6vw, 1.25rem);
}

.cell {
  position: relative;
  grid-column: span 2;
  background: var(--white);
  border: 1px solid var(--c-200);
  border-radius: var(--radius-surface);
  padding: clamp(1.25rem, 2.2vw, 1.7rem);
  display: flex;
  flex-direction: column;
  gap: .7rem;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease), transform .18s var(--ease);
}

.cell:hover {
  border-color: var(--brand-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.cell--wide { grid-column: span 4; }
.cell--full { grid-column: span 6; }
.cell--half { grid-column: span 3; }

.cell--green {
  background: linear-gradient(160deg, var(--brand-800) 0%, var(--brand-700) 100%);
  border-color: transparent;
  color: var(--white);
}

.cell--green h3 { color: var(--white); }
.cell--green p { color: rgba(255, 255, 255, .92); }
.cell--green .cell__icon { background: rgba(255, 255, 255, .18); color: var(--white); }

.cell--soft { background: var(--brand-50); border-color: var(--brand-100); }

.cell__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--brand-50);
  color: var(--brand-700);
  flex: none;
}

.cell__icon svg { width: 22px; height: 22px; }

.cell p { font-size: .93rem; color: var(--text-muted); }
.cell--green p { color: rgba(255, 255, 255, .9); }

.cell__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: auto;
  padding-top: .35rem;
}

.cell__tags li {
  font-size: .78rem;
  color: var(--c-600);
  background: var(--c-50);
  border: 1px solid var(--c-200);
  border-radius: var(--radius-pill);
  padding: .2rem .6rem;
}

.cell--green .cell__tags li {
  color: var(--white);
  background: rgba(255, 255, 255, .16);
  border-color: rgba(255, 255, 255, .26);
}

/* ---------- 10. Split（应用介绍） ---------- */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.split--flip .split__media { order: -1; }

.numlist { display: grid; gap: 1.15rem; margin-top: 1.9rem; }

.numlist li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: .95rem;
  align-items: start;
}

.numlist__idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--brand-50);
  border: 1px solid var(--brand-100);
  color: var(--brand-800);
  font-weight: 700;
  font-size: .92rem;
  flex: none;
}

.numlist h3 { margin-bottom: .2rem; }
.numlist p { font-size: .93rem; color: var(--text-muted); }

/* 手机框：只用来装**真实截图**，不做假界面 */
.phone {
  width: min(300px, 78vw);
  margin-inline: auto;
  border-radius: 34px;
  padding: 10px;
  background: linear-gradient(160deg, var(--c-800), var(--c-950));
  box-shadow: var(--shadow-lg);
}

.phone img {
  width: 100%;
  border-radius: 26px;
  background: var(--white);
}

.phone--pair {
  display: flex;
  gap: clamp(.8rem, 2vw, 1.4rem);
  align-items: flex-start;
  justify-content: center;
  width: auto;
  background: none;
  padding: 0;
  border-radius: 0;
  box-shadow: none;
}

.phone--pair .phone { margin: 0; width: min(238px, 42vw); }
.phone--pair .phone:last-child { transform: translateY(1.75rem); }

.shot-caption {
  margin-top: 1.1rem;
  text-align: center;
  font-size: .84rem;
  color: var(--c-500);
}

/* ---------- 11. Trio（三端互通） ---------- */
.trio {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(.9rem, 2vw, 1.25rem);
  margin-top: 2.25rem;
}

.trio__item {
  background: var(--white);
  border: 1px solid var(--c-200);
  border-radius: var(--radius-surface);
  padding: 1.5rem 1.45rem;
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.trio__item svg { width: 26px; height: 26px; color: var(--brand-700); }
.trio__item h3 { font-size: 1.08rem; }
.trio__item p { font-size: .9rem; color: var(--text-muted); }

/* ---------- 12. Trust / 合规 ---------- */
.trust {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2.25rem;
}

.trust__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: .9rem;
  align-items: start;
  padding: 1.2rem 1.3rem;
  background: var(--white);
  border: 1px solid var(--c-200);
  border-radius: var(--radius-surface);
}

.trust__item svg { width: 22px; height: 22px; color: var(--brand-700); margin-top: .18rem; }
.trust__label { font-size: .82rem; color: var(--c-500); }
.trust__value { font-size: 1rem; font-weight: 600; color: var(--ink); word-break: break-word; }
.trust__value a { color: var(--brand-700); border-bottom: 1px solid var(--brand-200); }

/* ---------- 13. CTA band ---------- */
.cta-band {
  background: linear-gradient(150deg, var(--brand-900) 0%, var(--brand-800) 45%, var(--brand-700) 100%);
  color: var(--white);
  border-radius: 28px;
  padding: clamp(2rem, 4.5vw, 3.25rem) clamp(1.5rem, 4vw, 3rem);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: auto -10% -60% auto;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, .18) 0%, transparent 66%);
  pointer-events: none;
}

.cta-band h2 { color: var(--white); position: relative; }
.cta-band p {
  color: rgba(255, 255, 255, .9);
  margin: .85rem auto 0;
  max-width: 46ch;
  position: relative;
}
.cta-band .btn-row { justify-content: center; position: relative; }
.cta-band .small { position: relative; margin-top: 1.1rem; color: rgba(255, 255, 255, .78); }

/* ---------- 14. Footer ---------- */
.site-footer {
  background: var(--c-950);
  color: rgba(255, 255, 255, .72);
  padding-block: clamp(2.75rem, 5vw, 4rem) 1.75rem;
  font-size: .9rem;
  margin-top: clamp(3.5rem, 7vw, 6rem);
}

.site-footer h3 {
  color: var(--white);
  font-size: .95rem;
  margin-bottom: .95rem;
  letter-spacing: .01em;
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: clamp(1.75rem, 4vw, 3rem);
}

.footer__brand { display: flex; align-items: center; gap: .65rem; margin-bottom: 1rem; }
.footer__brand img { width: 34px; height: 34px; border-radius: 10px; }
.footer__brand span { color: var(--white); font-weight: 700; font-size: 1.06rem; }
.footer__about { max-width: 34ch; line-height: 1.7; }

.footer__links li + li { margin-top: .55rem; }
.footer__links a { color: rgba(255, 255, 255, .72); transition: color .16s var(--ease); }
.footer__links a:hover { color: var(--brand-300); }

.footer__contact li + li { margin-top: .6rem; }
.footer__contact a { color: var(--brand-300); }

.footer__bottom {
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.4rem;
  border-top: 1px solid rgba(255, 255, 255, .14);
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.35rem;
  align-items: center;
  justify-content: space-between;
  font-size: .82rem;
  color: rgba(255, 255, 255, .6);
}

.footer__bottom a { color: rgba(255, 255, 255, .74); }
.footer__bottom a:hover { color: var(--brand-300); }
.footer__legal { display: flex; flex-wrap: wrap; gap: .4rem 1.1rem; }

/* ---------- 15. Inner page head ---------- */
.page-head {
  background:
    radial-gradient(900px 420px at 82% -20%, var(--brand-50) 0%, transparent 64%),
    var(--c-50);
  border-bottom: 1px solid var(--c-200);
  padding-block: clamp(2.25rem, 4.5vw, 3.5rem);
}

.page-head h1 { margin-bottom: .8rem; }
.page-head .lead { max-width: 58ch; }
.page-head__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 1.25rem;
  margin-top: 1.35rem;
  font-size: .85rem;
  color: var(--c-500);
}

/* ---------- 16. Cards / lists / misc ---------- */
.card {
  background: var(--white);
  border: 1px solid var(--c-200);
  border-radius: var(--radius-surface);
  padding: clamp(1.3rem, 2.5vw, 1.9rem);
}

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }

.stack > * + * { margin-top: 1rem; }
.stack-lg > * + * { margin-top: clamp(1.5rem, 3vw, 2.25rem); }

.check-list { display: grid; gap: .7rem; margin-top: 1.2rem; }

.check-list li {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: .7rem;
  font-size: .95rem;
  align-items: start;
}

.check-list svg { width: 20px; height: 20px; color: var(--brand-600); margin-top: .22rem; }

.feature-block { border-top: 1px solid var(--c-200); padding-top: 1.5rem; }
.feature-block + .feature-block { margin-top: 2rem; }
.feature-block h2 { font-size: 1.35rem; margin-bottom: .5rem; }
.feature-block .lead { font-size: 1rem; }

.contact-list { display: grid; gap: 1rem; }
.contact-list dt { font-size: .82rem; color: var(--c-500); margin-bottom: .22rem; }
.contact-list dd { font-size: 1.02rem; color: var(--ink); font-weight: 500; word-break: break-word; }
.contact-list dd a { color: var(--brand-700); border-bottom: 1px solid var(--brand-200); }

/* ---------- 17. Legal prose ---------- */
.legal {
  max-width: 860px;
  margin-inline: auto;
  padding-block: clamp(2rem, 4vw, 3.25rem) 0;
  font-size: 1rem;
  line-height: 1.95;
  color: var(--c-700);
}

.legal > p:first-of-type { font-size: 1.05rem; color: var(--ink); }
.legal p { margin-block: .8rem; }
.legal p:empty { display: none; }

/* 官方协议原文里的"标题行"用字号/编号表达层级，抽取时翻译成这两个 class */
.legal__h {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.5;
  margin-block: 2.1rem .65rem;
  padding-left: .75rem;
  border-left: 3px solid var(--brand-500);
}

.legal__h2 {
  font-size: 1.03rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.55;
  margin-block: 1.5rem .5rem;
}

.legal h1 { font-size: 1.6rem; }
.legal strong { color: var(--ink); }

.legal__notice {
  display: grid;
  gap: .5rem;
  background: var(--brand-50);
  border: 1px solid var(--brand-100);
  border-radius: var(--radius-surface);
  padding: 1.2rem 1.35rem;
  margin-bottom: 1.75rem;
  font-size: .92rem;
  color: var(--c-700);
}

.legal__notice strong { color: var(--brand-800); }

.legal__raw { word-break: break-word; }

.legal__raw img { max-width: 100%; height: auto; margin-block: 1rem; }
.legal__raw table { width: 100%; border-collapse: collapse; margin-block: 1rem; font-size: .93rem; }
.legal__raw table td,
.legal__raw table th { border: 1px solid var(--c-200); padding: .5rem .7rem; vertical-align: top; }
.legal__raw ol,
.legal__raw ul { padding-left: 1.4rem; list-style: revert; margin-block: .8rem; }
.legal__raw li { margin-block: .35rem; }
.legal__raw span { background: none !important; color: inherit !important; font-family: inherit !important; font-size: inherit !important; }
.legal__raw a { color: var(--brand-700); border-bottom: 1px solid var(--brand-200); word-break: break-all; }
.legal__raw p { margin-block: .8rem; }

.legal__foot {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--c-200);
  font-size: .92rem;
  color: var(--text-muted);
}

/* ---------- 18. Motion ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

[data-reveal].is-visible { opacity: 1; transform: none; }

.no-js [data-reveal] { opacity: 1; transform: none; }

/* ---------- 19. Responsive ---------- */
@media (max-width: 1024px) {
  .nav { display: none; }
  .site-header .btn { display: none; }
  .nav-toggle { display: inline-flex; }

  .hero__grid { grid-template-columns: minmax(0, 1fr); min-height: 0; }
  .hero__visual { order: -1; max-width: 460px; margin-inline: auto; width: 100%; }

  .bento { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .cell { grid-column: span 2; }
  .cell--wide { grid-column: span 4; }
  .cell--half { grid-column: span 2; }
  .cell--full { grid-column: span 4; }

  .split { grid-template-columns: minmax(0, 1fr); gap: 2.25rem; }
  .split--flip .split__media { order: 0; }

  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  body { font-size: 15.5px; }

  .bento { grid-template-columns: minmax(0, 1fr); }
  .cell,
  .cell--wide,
  .cell--half,
  .cell--full { grid-column: span 1; }

  .trio { grid-template-columns: minmax(0, 1fr); }
  .trust { grid-template-columns: minmax(0, 1fr); }
  .grid-2, .grid-3 { grid-template-columns: minmax(0, 1fr); }
  .footer__grid { grid-template-columns: minmax(0, 1fr); gap: 2rem; }
  .btn-row .btn { flex: 1 1 auto; }
  .phone--pair { flex-direction: column; align-items: center; }
  .phone--pair .phone { width: min(280px, 80vw); }
  .phone--pair .phone:last-child { transform: none; }
}

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

/* ---------- 20. Print（协议页可打印存档） ---------- */
@media print {
  .site-header, .site-footer, .cta-band, .no-print { display: none !important; }
  body { font-size: 12pt; color: #000; }
  .legal { max-width: none; padding-block: 0; }
  .legal__notice { border-color: #999; background: none; }
  a { color: #000; }
}