/* ==========================================================================
   宝儿 · 官网样式
   设计基调：暖纸底 + 品牌橙 + 深石墨对比区段。克制、留白、低饱和。
   ========================================================================== */

:root {
  --paper: #FFFCF8;
  --paper-2: #F8F2E9;
  --paper-3: #FBF5EC;
  --ink: #17171A;
  --ink-2: #55555E;
  --ink-3: #8C8C96;
  --line: #EBE2D6;
  --line-2: #E2D7C8;
  --brand: #F2653C;
  --brand-2: #D9491F;
  --brand-soft: #FDEDE6;
  --amber: #FFC46B;
  --dark: #14141A;
  --dark-2: #1D1D25;
  --dark-line: rgba(255, 255, 255, .1);
  --mint: #4FBFA8;

  --r-sm: 10px;
  --r: 16px;
  --r-lg: 22px;
  --r-xl: 30px;

  --shadow-s: 0 1px 2px rgba(60, 40, 20, .04), 0 4px 14px rgba(60, 40, 20, .05);
  --shadow-m: 0 2px 6px rgba(60, 40, 20, .05), 0 18px 44px rgba(60, 40, 20, .08);
  --shadow-l: 0 30px 80px rgba(60, 40, 20, .14);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  --mono: "SF Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

::selection { background: rgba(242, 101, 60, .2); }

.skip {
  position: fixed; left: 12px; top: -60px; z-index: 999;
  background: var(--ink); color: #fff; padding: 10px 18px; border-radius: 8px;
  transition: top .2s;
}
.skip:focus { top: 12px; }

.wrap { width: min(1160px, 100% - 48px); margin-inline: auto; }

/* ------------------------------------------------------------------ 通用 -- */

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  margin: 0 0 18px;
  font-size: 12.5px; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--brand);
}
.eyebrow::before {
  content: ""; width: 22px; height: 1.5px; background: currentColor; opacity: .5;
}
.eyebrow--onDark { color: var(--amber); }

.h2 {
  margin: 0 0 22px;
  font-size: clamp(30px, 4.1vw, 50px);
  line-height: 1.14;
  letter-spacing: -.022em;
  font-weight: 800;
  text-wrap: balance;
}
.h2--sm { font-size: clamp(25px, 2.7vw, 34px); }

.lede {
  margin: 0;
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink-2);
  text-wrap: pretty;
}

.sec { padding: clamp(60px, 7.5vw, 96px) 0; position: relative; }
.sec--paper {
  background: var(--paper-2);
  border-block: 1px solid var(--line);
}
.sec--dark { background: var(--dark); color: #F2F0EC; }
.sec--dark .lede { color: rgba(242, 240, 236, .68); }

.sec__head { max-width: 720px; margin-bottom: clamp(40px, 5vw, 64px); }
.sec__head--dark .h2 { color: #FAF8F5; }
.sec__head--center { margin-inline: auto; text-align: center; }
.sec__head--center .lede { margin-inline: auto; }
.sec__head--center .eyebrow { justify-content: center; }

/* 按钮 */
.btn {
  --bg: var(--ink); --fg: #fff;
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 24px; border-radius: 100px; border: 1px solid transparent;
  background: var(--bg); color: var(--fg);
  font-size: 15px; font-weight: 650; line-height: 1;
  cursor: pointer; white-space: nowrap;
  transition: transform .18s ease, box-shadow .24s ease, background .2s ease, border-color .2s ease;
}
.btn svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--brand {
  background: var(--brand); color: #fff;
  box-shadow: 0 8px 22px -8px rgba(242, 101, 60, .55);
}
.btn--brand:hover { background: var(--brand-2); box-shadow: 0 14px 30px -10px rgba(242, 101, 60, .6); }

.btn--ghost {
  background: transparent; color: var(--ink);
  border-color: var(--line-2);
}
.btn--ghost:hover { background: #fff; border-color: var(--line-2); box-shadow: var(--shadow-s); }
.sec--dark .btn--ghost { color: #F2F0EC; border-color: rgba(255,255,255,.22); }
.sec--dark .btn--ghost:hover { background: rgba(255,255,255,.06); }

.btn--lg { padding: 17px 32px; font-size: 16px; }
.btn--sm { padding: 10px 18px; font-size: 14px; }

/* 滚动出现 */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s cubic-bezier(.22,.61,.36,1), transform .8s cubic-bezier(.22,.61,.36,1);
  transition-delay: var(--d, 0ms);
}
.reveal.is-in { opacity: 1; transform: none; }

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

/* -------------------------------------------------------------------- 导航 -- */

.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 252, 248, .95);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s;
}
.nav.is-stuck {
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px -18px rgba(40, 25, 10, .35);
}
.nav__inner {
  width: min(1160px, 100% - 48px); margin-inline: auto;
  height: 70px; display: flex; align-items: center; gap: 26px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand__mark { width: 34px; height: 34px; border-radius: 9px; object-fit: cover; }
.brand__name { font-size: 17px; font-weight: 800; letter-spacing: -.01em; }
.brand__sub {
  font-size: 12px; color: var(--ink-3); padding-left: 10px;
  border-left: 1px solid var(--line-2); line-height: 1.2;
}
.nav__links { display: flex; gap: 4px; margin-left: auto; }
.nav__links a {
  padding: 8px 13px; border-radius: 100px;
  font-size: 14.5px; color: var(--ink-2); font-weight: 500;
  transition: background .18s, color .18s;
}
.nav__links a:hover { background: var(--paper-3); color: var(--ink); }
.nav__cta { flex-shrink: 0; }
.nav__toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line-2);
  border-radius: 12px; background: #fff; flex-direction: column;
  align-items: center; justify-content: center; gap: 5px; cursor: pointer;
}
.nav__toggle span { width: 17px; height: 1.8px; background: var(--ink); border-radius: 2px; transition: transform .25s, opacity .2s; }
.nav__toggle[aria-expanded="true"] span:first-child { transform: translateY(3.4px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.4px) rotate(-45deg); }
.nav__drawer {
  display: none; flex-direction: column; gap: 2px;
  padding: 8px 24px 20px; border-top: 1px solid var(--line);
  background: var(--paper);
}
.nav__drawer a { padding: 13px 4px; font-size: 16px; border-bottom: 1px solid var(--line); }
.nav__drawer.is-open { display: flex; }

/* -------------------------------------------------------------------- 首屏 -- */

.hero { position: relative; padding: clamp(56px, 8vw, 96px) 0 0; overflow: hidden; }
.hero__glow {
  position: absolute; inset: -42% -18% auto -18%; height: 1180px; z-index: 0;
  background: radial-gradient(54% 46% at 67% 44%, rgba(255, 196, 107, .34), rgba(255, 196, 107, 0) 72%);
  pointer-events: none;
}
.hero__grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.15fr .85fr;
  gap: clamp(24px, 4vw, 56px); align-items: center;
}
.hero__copy { max-width: 620px; }
.hero__title {
  margin: 0 0 26px;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.06;
  letter-spacing: -.035em;
  font-weight: 820;
}
.mark {
  position: relative; display: inline-block; color: var(--brand);
}
.mark::after {
  content: ""; position: absolute; left: -2px; right: -2px; bottom: .1em;
  height: .28em; background: rgba(255, 196, 107, .55); border-radius: 3px; z-index: -1;
  transform: rotate(-.6deg);
}
.hero__lede {
  margin: 0 0 34px; max-width: 54ch;
  font-size: clamp(15.5px, 1.4vw, 17.5px); line-height: 1.85; color: var(--ink-2);
}
.hero__lede strong { color: var(--ink); font-weight: 700; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 24px; }
.hero__meta { margin: 0; font-size: 13px; color: var(--ink-3); letter-spacing: .01em; }
.hero__promise { margin-left: 18px; padding-left: 18px; border-left: 1px solid var(--line-2); }

.eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--brand);
  box-shadow: 0 0 0 3px rgba(242, 101, 60, .16);
  animation: breathe 2.6s ease-in-out infinite;
}
@keyframes breathe { 50% { box-shadow: 0 0 0 6px rgba(242, 101, 60, .05); } }

.hero__visual { position: relative; display: grid; place-items: center; min-height: 420px; }
.hero__halo {
  position: absolute; width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 196, 107, .30), rgba(255, 196, 107, 0) 68%);
  filter: blur(6px);
}
/* 椭圆落地阴影：不用 filter 画，避免部分渲染器把透明区域填白 */
.hero__visual::after {
  content: "";
  position: absolute; bottom: 3%; left: 50%; transform: translateX(-50%);
  width: 46%; height: 26px; border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(190, 90, 50, .26), rgba(190, 90, 50, 0) 70%);
  filter: blur(9px);
  z-index: 0;
}
.hero__mascot {
  position: relative; z-index: 1;
  width: clamp(230px, 26vw, 330px); height: auto;
  animation: bob 6s ease-in-out infinite;
}
@keyframes bob {
  0%, 100% { transform: translateY(0) rotate(-.6deg); }
  50% { transform: translateY(-14px) rotate(.6deg); }
}
.float-card {
  position: absolute; background: rgba(255, 255, 255, .92);
  border: 1px solid var(--line); border-radius: 14px;
  padding: 11px 16px; box-shadow: var(--shadow-m);
  backdrop-filter: blur(8px);
  display: flex; flex-direction: column; gap: 1px;
  animation: float 7s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.float-card__k { font-size: 11px; color: var(--ink-3); letter-spacing: .04em; }
.float-card__v { font-size: 21px; font-weight: 750; letter-spacing: -.02em; color: var(--ink); }
.float-card__v em { font-size: 11px; font-weight: 500; color: var(--ink-3); font-style: normal; margin-left: 3px; }
.float-card--a { top: 6%; left: -2%; animation-delay: -1s; }
.float-card--b { bottom: 16%; right: -4%; animation-delay: -3.4s; }
.float-card--c {
  bottom: 2%; left: 8%; flex-direction: row; align-items: center; gap: 9px;
  padding: 9px 15px; animation-delay: -2s;
}
.float-card__t { font-size: 12px; font-weight: 600; color: var(--ink-2); letter-spacing: .02em; }
.pulse {
  width: 7px; height: 7px; border-radius: 50%; background: var(--mint);
  box-shadow: 0 0 0 0 rgba(79, 191, 168, .5);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(79, 191, 168, .5); }
  70% { box-shadow: 0 0 0 8px rgba(79, 191, 168, 0); }
  100% { box-shadow: 0 0 0 0 rgba(79, 191, 168, 0); }
}

/* 数据条 */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  margin-top: clamp(48px, 7vw, 80px);
  border-top: 1px solid var(--line);
  padding-top: 34px; padding-bottom: 44px;
}
.stat { padding: 0 clamp(12px, 2vw, 28px); border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat__num {
  display: flex; align-items: baseline; gap: 5px;
  font-size: clamp(30px, 3.4vw, 42px); font-weight: 800;
  letter-spacing: -.03em; line-height: 1; color: var(--ink);
}
.stat__num small { font-size: 13px; font-weight: 600; color: var(--ink-3); letter-spacing: 0; }
.stat__label { margin: 12px 0 0; font-size: 13.5px; line-height: 1.6; color: var(--ink-2); }
.stat__label span { color: var(--ink-3); font-size: 12.5px; }

/* -------------------------------------------------------------- 问题定义 -- */

.pain-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: var(--line);
  border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden;
}
.pain {
  position: relative; background: var(--paper); padding: 30px 26px 34px;
  transition: background .3s;
}
.pain:hover { background: #fff; }
.pain__no {
  display: block; font-family: var(--mono); font-size: 12px;
  color: var(--brand); letter-spacing: .08em; margin-bottom: 16px; font-weight: 600;
}
.pain h3 { margin: 0 0 12px; font-size: 18px; font-weight: 700; letter-spacing: -.01em; line-height: 1.4; }
.pain p { margin: 0 0 20px; font-size: 14px; line-height: 1.8; color: var(--ink-2); }
.pain__tag {
  display: inline-block; padding: 4px 10px; border-radius: 6px;
  background: var(--brand-soft); color: var(--brand-2);
  font-size: 11.5px; font-weight: 600; letter-spacing: .03em;
}

.callout {
  display: flex; gap: 18px; align-items: flex-start;
  margin-top: 34px; padding: 24px 28px;
  background: var(--paper-3); border: 1px solid var(--line);
  border-left: 3px solid var(--brand); border-radius: 4px var(--r) var(--r) 4px;
}
.callout__icon { flex-shrink: 0; width: 22px; height: 22px; margin-top: 4px; color: var(--brand); }
.callout__icon svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.callout p { margin: 0; font-size: 15px; line-height: 1.8; color: var(--ink-2); }
.callout strong { color: var(--ink); }

/* -------------------------------------------------------------- 科普专区 -- */

.sci {
  display: grid; grid-template-columns: 300px 1fr;
  gap: clamp(28px, 5vw, 72px);
  padding: clamp(48px, 6vw, 76px) 0;
  border-top: 1px solid var(--line);
}
.sci:first-of-type { border-top: 0; padding-top: 0; }
.sci__side { position: sticky; top: 100px; align-self: start; min-width: 0; }
.sci__no {
  display: block; font-family: var(--mono); font-size: 13px; font-weight: 600;
  color: var(--brand); letter-spacing: .1em; margin-bottom: 14px;
}
.sci__title { margin: 0; font-size: clamp(21px, 2.2vw, 27px); line-height: 1.38; font-weight: 750; letter-spacing: -.018em; }
.sci__body { max-width: 780px; min-width: 0; }
.sci__lead {
  margin: 0 0 26px; font-size: 17px; line-height: 1.8; color: var(--ink-2);
  font-weight: 450; text-wrap: pretty;
}
.figure {
  margin: 0 0 28px; padding: 26px 22px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--r);
  box-shadow: var(--shadow-s);
  max-width: 100%; min-width: 0; overflow-x: auto;
  scrollbar-width: thin;
}
.figure svg { width: 100%; height: auto; }
.figure--two { padding: 22px 18px; }

.sci__list { margin: 0; padding: 0; list-style: none; }
.sci__list li {
  position: relative; padding-left: 22px; margin-bottom: 13px;
  font-size: 14.5px; line-height: 1.85; color: var(--ink-2);
}
.sci__list li::before {
  content: ""; position: absolute; left: 2px; top: .72em;
  width: 6px; height: 6px; border-radius: 2px;
  background: var(--amber); transform: rotate(45deg);
}
.sci__list strong { color: var(--ink); font-weight: 650; }

.sci--warn .figure { background: #FFFDFB; }
.warn-note {
  padding: 22px 24px; margin-bottom: 22px;
  background: #fff; border: 1px solid var(--line-2); border-radius: var(--r);
  border-left: 3px solid var(--amber);
}
.warn-note p { margin: 0 0 10px; font-size: 14.5px; line-height: 1.85; color: var(--ink-2); }
.warn-note p:last-child { margin-bottom: 0; }
.warn-note strong { color: var(--ink); }
.sci__honest {
  margin: 0; font-size: 14.5px; line-height: 1.8; color: var(--ink-3);
  padding-left: 16px; border-left: 2px solid var(--brand);
}

/* -------------------------------------------------------------- 训练方法 -- */

.phases {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  margin: 0 0 clamp(40px, 5vw, 56px); padding: 0; list-style: none;
  border-top: 1px solid var(--dark-line);
}
.phase {
  padding: 26px 24px 30px 0; border-right: 1px solid var(--dark-line);
  padding-right: 24px;
}
.phase:last-child { border-right: 0; }
.phase__bar {
  height: 3px; background: rgba(255,255,255,.09); border-radius: 2px;
  margin-bottom: 22px; overflow: hidden;
}
.phase__bar span {
  display: block; height: 100%; width: var(--w); border-radius: 2px;
  background: linear-gradient(90deg, var(--amber), var(--brand));
  transform-origin: left;
  animation: barGrow 1.1s cubic-bezier(.22,.61,.36,1) both;
}
@keyframes barGrow { from { transform: scaleX(0); } }
.phase__no {
  font-family: var(--mono); font-size: 12px; color: var(--amber);
  letter-spacing: .1em; font-weight: 600;
}
.phase h3 { margin: 8px 0 6px; font-size: 19px; font-weight: 700; color: #FAF8F5; letter-spacing: -.01em; }
.phase__dur { margin: 0 0 14px; font-size: 12px; color: rgba(255,255,255,.42); letter-spacing: .04em; }
.phase p:last-child { margin: 0; font-size: 13.5px; line-height: 1.8; color: rgba(242,240,236,.62); }

.durations {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  margin-bottom: clamp(48px, 6vw, 72px);
}
.duration {
  position: relative; padding: 22px 24px;
  background: var(--dark-2); border: 1px solid var(--dark-line); border-radius: var(--r);
}
.duration--pick { border-color: rgba(255,196,107,.42); background: rgba(255,196,107,.05); }
.duration__badge {
  position: absolute; top: -9px; right: 18px;
  background: var(--amber); color: #3A2408;
  font-size: 10.5px; font-weight: 800; letter-spacing: .06em;
  padding: 3px 9px; border-radius: 100px;
}
.duration__t { display: block; font-size: 20px; font-weight: 750; color: #FAF8F5; letter-spacing: -.01em; }
.duration__d { display: block; margin-top: 5px; font-size: 13px; color: rgba(242,240,236,.55); line-height: 1.6; }

.method-shot { margin: 0; }
.method-shot img {
  width: 100%; border-radius: var(--r-lg);
  border: 1px solid var(--dark-line);
  box-shadow: 0 40px 90px -30px rgba(0,0,0,.7);
}
.method-shot__cap {
  margin: 18px 0 0; text-align: center;
  font-size: 12.5px; color: rgba(242,240,236,.42); letter-spacing: .02em;
}

/* ------------------------------------------------------------------ 功能 -- */

.feat-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 16px; margin-bottom: clamp(48px, 6vw, 72px);
}
.feat {
  padding: 28px 24px 30px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  transition: transform .3s cubic-bezier(.22,.61,.36,1), box-shadow .3s, border-color .3s;
}
.feat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-m);
  border-color: var(--line-2);
}
.feat__icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--brand-soft); color: var(--brand);
  display: grid; place-items: center; margin-bottom: 18px;
}
.feat__icon svg { width: 23px; height: 23px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.feat h3 { margin: 0 0 10px; font-size: 16.5px; font-weight: 700; letter-spacing: -.01em; }
.feat p { margin: 0; font-size: 13.5px; line-height: 1.8; color: var(--ink-2); }
.feat strong { color: var(--ink); font-weight: 650; }

.showcase {
  display: grid; grid-template-columns: 1.55fr 1fr;
  gap: clamp(20px, 3vw, 40px); align-items: center;
}
.showcase__desk img {
  width: 100%; border-radius: var(--r-lg);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-l);
}
.showcase__phones { display: flex; gap: 18px; align-items: flex-start; }
.phone { margin: 0; flex: 1; }
.phone img {
  width: 100%; border-radius: 20px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-m);
}
.phone--offset { margin-top: 42px; }
.phone figcaption {
  margin-top: 11px; text-align: center;
  font-size: 12px; color: var(--ink-3); letter-spacing: .03em;
}

/* ------------------------------------------------------------------ 场景 -- */

.scenes {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: var(--line);
  border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden;
}
.scene {
  background: var(--paper-2); padding: 30px 28px 34px;
  transition: background .3s;
}
.scene:hover { background: var(--paper); }
.scene__time {
  display: inline-block; margin-bottom: 14px;
  font-family: var(--mono); font-size: 11.5px; font-weight: 600;
  color: var(--brand); letter-spacing: .04em;
  padding: 4px 10px; background: #fff; border: 1px solid var(--line); border-radius: 100px;
}
.scene h3 { margin: 0 0 10px; font-size: 18px; font-weight: 700; letter-spacing: -.01em; }
.scene p { margin: 0; font-size: 14px; line-height: 1.8; color: var(--ink-2); }

/* ------------------------------------------------------------------ 价值观 -- */

.values {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 0;
  padding: clamp(2px, .5vw, 6px) clamp(24px, 3.4vw, 44px);
  background: var(--dark-2);
  border: 1px solid var(--dark-line);
  border-radius: var(--r-lg);
}
.value {
  padding: clamp(26px, 3.6vw, 40px) clamp(24px, 4vw, 48px) clamp(30px, 3.6vw, 42px) 0;
  border-right: 1px solid var(--dark-line);
}
.value:nth-child(even) { border-right: 0; padding-left: clamp(24px, 4vw, 48px); }
.value:nth-child(-n+2) { border-bottom: 1px solid var(--dark-line); }
.value__no {
  display: block; font-family: var(--mono); font-size: 12px; font-weight: 600;
  color: var(--amber); letter-spacing: .1em; margin-bottom: 16px;
}
.value h3 { margin: 0 0 12px; font-size: clamp(18px, 2vw, 21px); font-weight: 700; color: #FAF8F5; letter-spacing: -.012em; }
.value p { margin: 0; font-size: 14.5px; line-height: 1.85; color: rgba(242,240,236,.6); }

.values__line {
  margin: clamp(40px, 5vw, 60px) 0 0;
  text-align: center;
  font-size: clamp(19px, 2.4vw, 26px); font-weight: 700;
  letter-spacing: -.015em; color: var(--amber);
}

/* ------------------------------------------------------------------ 下载 -- */

.dl-grid {
  display: grid; grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.dl {
  position: relative; display: flex; flex-direction: column;
  grid-column: span 2;
  padding: 26px 26px 28px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  transition: transform .3s cubic-bezier(.22,.61,.36,1), box-shadow .3s, border-color .3s;
}
.dl--wide { grid-column: span 3; }
.dl:not(.dl--soon):hover {
  transform: translateY(-4px); box-shadow: var(--shadow-m); border-color: var(--line-2);
}
.dl__top { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 20px; }
.dl__icon { width: 34px; height: 34px; color: var(--ink); }
.dl__icon svg { width: 30px; height: 30px; fill: currentColor; stroke: none; }
.dl__badge {
  font-size: 11px; font-weight: 700; letter-spacing: .04em;
  padding: 4px 10px; border-radius: 100px;
  background: rgba(79, 191, 168, .13); color: #2F8A74;
}
.dl__badge--soon { background: rgba(140, 140, 150, .12); color: var(--ink-3); }
.dl__name { margin: 0 0 8px; font-size: 21px; font-weight: 750; letter-spacing: -.02em; }
.dl__desc { margin: 0 0 16px; font-size: 13px; line-height: 1.7; color: var(--ink-2); }
.dl__meta {
  margin: auto 0 16px; padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 12px; color: var(--ink-3); font-family: var(--mono); letter-spacing: .02em;
}
.dl__btn { width: 100%; }
.dl--soon { background: var(--paper-3); }
.dl--soon .dl__icon { color: var(--ink-3); }
.dl--soon .dl__btn[aria-disabled="true"] { color: var(--ink-3); border-style: dashed; pointer-events: none; }

.dl--web { background: linear-gradient(180deg, #FFFDF9, #FDF6EC); border-color: var(--line-2); }

.dl-help {
  margin-top: 18px; padding: 26px 30px;
  background: var(--paper-3); border: 1px solid var(--line); border-radius: var(--r-lg);
}
.dl-help h3 { margin: 0 0 16px; font-size: 14px; font-weight: 750; color: var(--ink); letter-spacing: .01em; }
.dl-help ul { margin: 0; padding: 0; list-style: none; }
.dl-help li {
  position: relative; padding-left: 16px; margin-bottom: 10px;
  font-size: 13px; line-height: 1.8; color: var(--ink-2);
}
.dl-help li:last-child { margin-bottom: 0; }
.dl-help li::before {
  content: ""; position: absolute; left: 0; top: .72em;
  width: 4px; height: 4px; border-radius: 50%; background: var(--line-2);
}
.dl-help strong { color: var(--ink); font-weight: 650; }

/* -------------------------------------------------------------- 安全声明 -- */

.safety { display: grid; grid-template-columns: 340px 1fr; gap: clamp(28px, 5vw, 72px); }
.safety__head .h2 { margin-bottom: 0; }
.safety__lead {
  margin: 0 0 30px; font-size: 16px; line-height: 1.85; color: var(--ink-2);
  padding: 20px 24px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--r); border-left: 3px solid var(--ink-3);
}
.safety__cols { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(20px, 3vw, 40px); }
.safety h4 {
  margin: 0 0 14px; font-size: 14px; font-weight: 750;
  letter-spacing: .02em; color: var(--ink);
}
.safety ul { margin: 0; padding: 0; list-style: none; }
.safety li {
  position: relative; padding-left: 18px; margin-bottom: 11px;
  font-size: 13.5px; line-height: 1.8; color: var(--ink-2);
}
.safety li::before {
  content: ""; position: absolute; left: 0; top: .7em;
  width: 5px; height: 5px; border-radius: 50%; background: var(--line-2);
}
.safety__warn li::before { background: var(--brand); }

/* ------------------------------------------------------------------ 页脚 -- */

.foot {
  background: var(--dark); color: rgba(242,240,236,.55);
  padding: 56px 0 44px;
}
.foot__inner { display: grid; grid-template-columns: 1fr auto; gap: 32px 48px; align-items: start; }
.foot__brand { display: flex; align-items: center; gap: 13px; }
.foot__brand img { width: 40px; height: 40px; border-radius: 11px; object-fit: cover; }
.foot__brand strong { display: block; font-size: 15px; color: #FAF8F5; font-weight: 700; letter-spacing: -.01em; }
.foot__brand span { display: block; font-size: 11.5px; color: rgba(242,240,236,.4); letter-spacing: .02em; margin-top: 2px; }
.foot__links { display: flex; gap: 22px; flex-wrap: wrap; padding-top: 8px; }
.foot__links a { font-size: 13.5px; transition: color .2s; }
.foot__links a:hover { color: var(--amber); }
.foot__legal { grid-column: 1 / -1; padding-top: 26px; border-top: 1px solid var(--dark-line); }
.foot__legal p { margin: 0 0 5px; font-size: 12px; color: rgba(242,240,236,.35); line-height: 1.7; }

/* ---------------------------------------------------------------- 响应式 -- */

@media (max-width: 1080px) {
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .pain-grid { grid-template-columns: repeat(2, 1fr); }
  .pain:nth-child(1), .pain:nth-child(2) { border-bottom: 1px solid var(--line); }
  .sci { grid-template-columns: 240px 1fr; }
  .safety { grid-template-columns: 300px 1fr; }
}

@media (max-width: 900px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; margin-left: auto; }
  .brand__sub { display: none; }

  .hero { padding-top: 40px; }
  .hero__grid { grid-template-columns: 1fr; }
  .hero__visual { min-height: 300px; margin: 8px 0 20px; }
  .hero__mascot { width: 200px; }
  .hero__halo { width: 280px; height: 280px; }
  .hero__visual::after { bottom: 4%; width: 40%; }
  .float-card--a { left: 4%; top: 4%; }
  .float-card--b { right: 4%; bottom: 18%; }
  .float-card--c { left: 6%; bottom: 0; }

  .stats { grid-template-columns: repeat(2, 1fr); gap: 26px 0; padding-bottom: 36px; }
  .stat:nth-child(3) { border-left: 0; padding-left: 0; }

  .sci { grid-template-columns: 1fr; gap: 24px; padding: 44px 0; }
  .sci__side { position: static; }
  .sci__title br { display: none; }
  .sci__body { max-width: 100%; }

  .phases { grid-template-columns: repeat(2, 1fr); }
  .phase { border-bottom: 1px solid var(--dark-line); }
  .phase:nth-child(2) { border-right: 0; }
  .phase:nth-child(3), .phase:nth-child(4) { border-bottom: 0; }
  .durations { grid-template-columns: 1fr; }

  .showcase { grid-template-columns: 1fr; }
  .showcase__phones { max-width: 460px; }

  .scenes { grid-template-columns: repeat(2, 1fr); }
  .values { grid-template-columns: 1fr; }
  .value, .value:nth-child(even) { border-right: 0; padding-left: 0; padding-right: 0; border-bottom: 1px solid var(--dark-line); }
  .value:last-child { border-bottom: 0; }

  .dl-grid { grid-template-columns: repeat(2, 1fr); }
  .dl, .dl--wide { grid-column: span 1; }

  .safety { grid-template-columns: 1fr; }
  .safety__cols { grid-template-columns: 1fr; gap: 26px; }

  .foot__inner { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .wrap, .nav__inner { width: calc(100% - 36px); }
  .sec { padding: 64px 0; }
  .hero__title { font-size: clamp(34px, 9vw, 46px); }
  .hero__lede { font-size: 15px; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { width: 100%; }
  .hero__meta { font-size: 12px; line-height: 1.7; }
  .hero__promise { display: block; margin: 4px 0 0; padding-left: 0; border-left: 0; }
  .float-card--a, .float-card--b { display: none; }

  .stats { grid-template-columns: 1fr 1fr; gap: 22px 0; }
  .stat { padding: 0 14px; }
  .stat:nth-child(odd) { border-left: 0; padding-left: 0; }
  .stat__num { font-size: 28px; }
  .stat__label { font-size: 12.5px; }
  .stat__label span { display: none; }

  .pain-grid { grid-template-columns: 1fr; }
  .pain { border-bottom: 1px solid var(--line); }
  .pain:last-child { border-bottom: 0; }
  .callout { flex-direction: column; gap: 12px; padding: 20px; }

  .figure { padding: 16px 12px; }
  .figure svg { min-width: 340px; }

  .phases { grid-template-columns: 1fr; }
  .phase { border-right: 0; border-bottom: 1px solid var(--dark-line) !important; padding-right: 0; }
  .phase:last-child { border-bottom: 0 !important; }

  .feat-grid { grid-template-columns: 1fr; }
  .scenes { grid-template-columns: 1fr; }
  .dl-grid { grid-template-columns: 1fr; }
  .scenes .scene { border-bottom: 1px solid var(--line); }
  .showcase__phones { gap: 12px; }
  .phone--offset { margin-top: 24px; }

  .foot__links { gap: 16px; }
  .foot { padding: 44px 0 36px; }
}