/* =================================================================
   呼噜 HuLu · 官网
   「纸与光」Paper & Light
   -----------------------------------------------------------------
   骨架：willtolearn.com 式企业 App 官网（顶栏 72 / 容器 1320 /
   Hero 5+7 / 深色多栏页脚）
   视觉：App 内同一套设计令牌（纸底、墨字、一枚赭石）
   加料：纸纹颗粒 / 暖光晕 / 爪印 / 双族字体 / 分层入场动效
   ================================================================= */

/* ============================================================
   0 · 字体
   ============================================================ */
@font-face{
  font-family:'Instrument Serif';
  src:url('../fonts/instrument-serif.woff2') format('woff2');
  font-weight:400;font-style:normal;font-display:swap;
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
@font-face{
  font-family:'Instrument Serif';
  src:url('../fonts/instrument-serif-italic.woff2') format('woff2');
  font-weight:400;font-style:italic;font-display:swap;
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}

/* ============================================================
   1 · 令牌
   ============================================================ */
:root{
  --paper:      #FAF6EE;
  --paper-2:    #F5EEE2;
  --paper-3:    #EDE2D0;
  --card:       #FFFCF7;

  --ink:        #33271D;
  --ink-2:      #6B5747;
  --ink-3:      #9A8570;
  --ink-4:      #C2B09B;

  --amber:      #B8703C;
  --amber-2:    #A15F2F;
  --amber-deep: #7E4823;
  --amber-soft: #D09059;
  --amber-tint: #F7E8D8;
  --amber-veil: rgba(184,112,60,.10);

  --rose:       #BE8574;
  --sage:       #96A788;

  --line:       #E8DBC6;
  --line-2:     #D9C7AC;

  --r-xs: 6px; --r-s: 10px; --r-m: 14px; --r-l: 18px; --r-xl: 26px;

  --shadow-card: 0 1px 2px rgba(80,52,26,.05), 0 2px 10px -4px rgba(80,52,26,.10);
  --shadow-soft: 0 2px 16px -8px rgba(80,52,26,.20);
  --shadow-warm: 0 16px 40px -18px rgba(80,52,26,.36);
  --shadow-phone: 0 30px 70px -30px rgba(58,36,18,.55), 0 8px 24px -12px rgba(58,36,18,.28);

  /* 拉丁文用 Instrument Serif，中文自动落到宋体 */
  --font-display:'Instrument Serif','Songti SC','Source Han Serif SC','Noto Serif SC','STSong',Georgia,serif;
  --font-serif:  'Songti SC','Source Han Serif SC','Noto Serif SC','STSong',Georgia,serif;
  --font-sans:   -apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Noto Sans SC','Microsoft YaHei',sans-serif;
  /* 手写体只用于批注，取不到时回落到楷体，不会掉成黑体 */
  --font-hand:   'Hanzipen SC','HanziPen SC','Yuanti SC','Kaiti SC','STKaiti','KaiTi',serif;

  --head-h: 72px;
  --wrap: 1320px;
  --gut: 60px;

  --ease-out: cubic-bezier(.22,.7,.28,1);
  --ease-spring: cubic-bezier(.18,.86,.3,1.06);

  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.42'/%3E%3C/svg%3E");
  --paw: url("../img/paw.svg");
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:hidden;scroll-padding-top:calc(var(--head-h) + 16px)}
@supports (overflow:clip){html{overflow-x:clip}}

body{
  margin:0;color:var(--ink);
  font-family:var(--font-sans);font-size:15px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  background-color:var(--paper);
  background-image:
    radial-gradient(120% 78% at 50% -12%, #FFFBF2 0%, rgba(255,251,242,0) 58%),
    radial-gradient(62% 46% at 102% 10%, rgba(214,160,112,.20), transparent 64%),
    radial-gradient(54% 44% at -4% 46%, rgba(190,133,116,.13), transparent 62%),
    radial-gradient(80% 56% at 50% 104%, rgba(206,168,132,.15), transparent 62%);
  background-attachment:fixed;
}
/* 纸纹颗粒：一层极淡的噪点，让整页不像纯色块 */
body::before{
  content:'';position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:var(--grain);background-size:160px;opacity:.045;
  mix-blend-mode:multiply;
}
main,header,footer{position:relative;z-index:1}

img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);font-weight:400;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.paw-ico{fill:currentColor;stroke:none}

/* ============================================================
   2 · 顶栏 + 阅读进度
   ============================================================ */
.site-head{
  position:fixed;inset:0 0 auto;z-index:80;height:var(--head-h);
  background:rgba(250,246,238,0);
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,box-shadow .28s;
}
.site-head.is-stuck{
  background:rgba(250,246,238,.86);
  backdrop-filter:saturate(1.4) blur(14px);
  -webkit-backdrop-filter:saturate(1.4) blur(14px);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px -26px rgba(58,36,18,.6);
}
.progress{
  position:absolute;left:0;bottom:-1px;height:2px;width:100%;
  background:linear-gradient(90deg,var(--amber-soft),var(--amber));
  transform:scaleX(0);transform-origin:left;
  opacity:0;transition:opacity .3s;
}
.site-head.is-stuck .progress{opacity:.85}

.head-inner{height:100%;display:flex;align-items:center;gap:32px}

.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:34px;height:34px;border-radius:10px;object-fit:cover;
  box-shadow:0 4px 10px -6px rgba(58,36,18,.6);
  transition:transform .5s var(--ease-spring)}
.brand:hover .brand-mark{transform:rotate(-6deg) scale(1.06)}
.brand-name{
  font-family:var(--font-serif);font-size:19px;letter-spacing:.06em;
  display:flex;align-items:baseline;gap:6px;color:var(--ink);
}
.brand-name em{
  font-family:'Instrument Serif',serif;font-style:italic;font-size:15px;
  letter-spacing:.03em;color:var(--ink-3);
}

.nav{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav a{
  font-size:13.5px;letter-spacing:.04em;color:var(--ink-2);
  padding:6px 0;position:relative;transition:color .18s;
}
.nav a::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--amber);transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease-out);
}
.nav a:hover,.nav a.is-active{color:var(--ink)}
.nav a:hover::after,.nav a.is-active::after{transform:scaleX(1)}

.head-cta{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-toggle{display:none}

/* ============================================================
   3 · 按钮
   ============================================================ */
.btn{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;letter-spacing:.06em;white-space:nowrap;
  transition:background .2s,color .2s,border-color .2s,transform .18s var(--ease-spring),box-shadow .2s;
}
.btn::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(100deg,transparent 20%,rgba(255,255,255,.22) 50%,transparent 80%);
  transform:translateX(-120%);transition:transform .7s var(--ease-out);
}
.btn:hover::after{transform:translateX(120%)}
.btn:active{transform:scale(.98)}
.btn-s{height:38px;padding:0 20px;font-size:13px;font-weight:600}
.btn-m{height:50px;padding:0 32px;font-size:14px;font-weight:600;margin-top:8px}
.btn-solid{background:var(--ink);color:var(--paper);border:1px solid var(--ink)}
.btn-solid:hover{background:var(--amber-deep);border-color:var(--amber-deep);box-shadow:0 10px 24px -14px rgba(126,72,35,.9)}

/* ============================================================
   4 · Hero
   ============================================================ */
.hero{
  position:relative;
  min-height:100svh;
  padding:calc(var(--head-h) + 76px) 0 72px;
  display:flex;align-items:center;
  overflow:hidden;
}
.hero-grid{
  width:100%;
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:48px;align-items:center;
}

/* 背景爪印 -------------------------------------------------- */
.hero-paws{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.paw{
  position:absolute;display:block;
  width:var(--w,34px);height:var(--w,34px);
  background:var(--amber);
  opacity:var(--o,.1);
  -webkit-mask:var(--paw) center/contain no-repeat;
  mask:var(--paw) center/contain no-repeat;
  animation:drift var(--dur,11s) ease-in-out infinite;
  animation-delay:var(--delay,0s);
  will-change:transform;
}
@keyframes drift{
  0%,100%{transform:translate3d(0,0,0) rotate(var(--r,0deg))}
  50%{transform:translate3d(4px,-18px,0) rotate(calc(var(--r,0deg) + 6deg))}
}

.paw-1{left:3%;top:22%;--w:40px;--r:-16deg;--o:.09;--dur:13s}
.paw-2{left:41%;top:13%;--w:24px;--r:12deg;--o:.07;--dur:10s;--delay:-3s}
.paw-3{left:8%;top:74%;--w:28px;--r:22deg;--o:.08;--dur:12s;--delay:-6s}
.paw-4{right:6%;top:18%;--w:50px;--r:-8deg;--o:.06;--dur:15s;--delay:-2s}
.paw-5{right:24%;bottom:8%;--w:32px;--r:18deg;--o:.09;--dur:11s;--delay:-8s}
.paw-6{left:30%;bottom:5%;--w:20px;--r:-24deg;--o:.07;--dur:9s;--delay:-4s}

/* 文案 ------------------------------------------------------ */
.hero-copy{position:relative;z-index:2}
/* 文案背后的一团暖光，像清晨照进来的那束 */
.hero-copy::before{
  content:'';position:absolute;z-index:-1;pointer-events:none;
  left:-160px;top:-120px;width:620px;height:520px;
  background:radial-gradient(circle at 45% 45%,rgba(233,186,136,.26),rgba(233,186,136,0) 64%);
  animation:halo 14s ease-in-out infinite;
}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:11.5px;letter-spacing:.22em;color:var(--amber);
  text-transform:uppercase;margin-bottom:26px;
}
.eyebrow svg{width:15px;height:15px;color:var(--amber-soft)}

h1{
  font-size:clamp(40px,4.5vw,58px);line-height:1.2;
  letter-spacing:.015em;color:var(--ink);
  text-wrap:balance;
}
h1 .accent{
  color:var(--amber);position:relative;display:inline-block;
}
h1 .accent::after{
  content:'';position:absolute;left:-3px;right:-3px;bottom:.02em;height:.2em;
  background:linear-gradient(90deg,rgba(184,112,60,.30),rgba(208,144,89,.18));
  border-radius:46% 54% 42% 58%/70% 40% 60% 30%;
  z-index:-1;transform:scaleX(0);transform-origin:left;
  animation:swash .8s var(--ease-out) .7s forwards;
}
@keyframes swash{to{transform:scaleX(1)}}

/* 逐行上浮：用两层 span 做遮罩 */
.tline{display:block;overflow:hidden;padding-bottom:.1em;margin-bottom:-.1em}
.tline>span{display:block;transform:translateY(108%);animation:lineUp 1s var(--ease-out) forwards}
.tline:nth-child(1)>span{animation-delay:.06s}
.tline:nth-child(2)>span{animation-delay:.17s}
@keyframes lineUp{to{transform:translateY(0)}}

.lede{
  margin-top:26px;font-size:16px;line-height:1.95;color:var(--ink-2);
  max-width:27em;
}
.lede em{font-style:normal;color:var(--ink);border-bottom:1px solid var(--amber-veil);padding-bottom:1px}

.store-row{display:flex;gap:12px;margin-top:36px;flex-wrap:wrap}
.store-row.center{justify-content:center;margin-top:34px}

.store{
  position:relative;
  display:inline-flex;align-items:center;gap:11px;
  height:56px;padding:0 22px;border-radius:999px;
  border:1px solid var(--line-2);background:var(--card);
  transition:border-color .2s,background .2s,transform .2s var(--ease-spring),box-shadow .2s;
  box-shadow:var(--shadow-card);
}
.store:hover{
  border-color:var(--ink-3);transform:translateY(-2px);
  box-shadow:var(--shadow-warm);
}
.store:active{transform:translateY(0) scale(.99)}
.store svg{width:23px;height:23px;stroke:none;color:var(--ink);flex-shrink:0;transition:transform .3s var(--ease-spring)}
.store:hover svg{transform:scale(1.08)}
.store-tx{display:flex;flex-direction:column;line-height:1.2}
.store-tx i{
  font-style:normal;font-size:9.5px;letter-spacing:.1em;white-space:nowrap;
  color:var(--ink-3);text-transform:uppercase;
}
.store-tx b{font-size:14.5px;font-weight:600;letter-spacing:.02em;color:var(--ink)}
.store-soon{display:inline-flex;align-items:center;gap:4px}
.store-soon::before{
  content:'';width:5px;height:5px;border-radius:50%;
  background:var(--amber-soft);box-shadow:0 0 0 2px rgba(208,144,89,.18);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{50%{opacity:.35;box-shadow:0 0 0 4px rgba(208,144,89,.10)}}

.hero-note{
  display:flex;align-items:center;gap:7px;
  margin-top:22px;font-size:12px;letter-spacing:.03em;color:var(--ink-3);
}
.hero-note svg{width:14px;height:14px;stroke-width:1.7;color:var(--ink-4)}

/* 手写批注 ------------------------------------------------ */
.hand-note{
  position:absolute;left:54px;bottom:-2px;z-index:3;
  display:flex;align-items:flex-end;gap:7px;
  font-family:var(--font-hand);font-size:20px;line-height:1.2;
  color:var(--amber-deep);opacity:.78;
  transform:rotate(-3deg);
  animation:noteIn .8s var(--ease-out) .5s both;
}
.hand-note svg{width:30px;height:40px;color:var(--amber);opacity:.55;margin-bottom:-4px}
@keyframes noteIn{from{opacity:0;transform:rotate(-3deg) translateY(10px)}to{opacity:.78;transform:rotate(-3deg) translateY(0)}}

/* 手机样机 -------------------------------------------------- */
.hero-device{
  position:relative;height:700px;margin-top:-10px;
  --tx:0px;--ty:0px;
  transform:translate3d(var(--tx),var(--ty),0);
  transition:transform .5s var(--ease-out);
}
.phone{
  position:absolute;border-radius:36px;
  background:#241C15;padding:8px;
  box-shadow:var(--shadow-phone);
  transition:transform .6s var(--ease-out);
}
.phone::after{
  content:'';position:absolute;inset:8px;border-radius:29px;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.10);
  pointer-events:none;
}
.phone-screen{
  border-radius:29px;overflow:hidden;background:var(--paper);
  height:100%;
}
.phone-screen img{width:100%;height:100%;object-fit:cover;object-position:top center}

.phone-front{
  width:300px;left:52px;top:36px;z-index:2;
  animation:phoneIn 1.1s var(--ease-out) .18s both;
}
.phone-back{
  width:236px;left:auto;right:26px;top:112px;z-index:1;
  opacity:.96;
  animation:phoneIn 1.1s var(--ease-out) .34s both;
}
@keyframes phoneIn{
  from{opacity:0;transform:translateY(34px) rotate(2deg) scale(.97)}
  to{opacity:1;transform:none}
}
.hero-device:hover .phone-front{transform:translateY(-6px)}
.hero-device:hover .phone-back{transform:translateY(-3px) rotate(-1deg)}

/* 暖光晕 + 大爪印水印 */
.hero-device::before{
  content:'';position:absolute;z-index:0;
  width:560px;height:560px;right:-30px;top:20px;border-radius:50%;
  background:
    radial-gradient(circle at 44% 42%,rgba(232,183,132,.42),rgba(232,183,132,0) 62%),
    radial-gradient(circle at 62% 60%,rgba(190,133,116,.22),rgba(190,133,116,0) 58%);
  pointer-events:none;filter:blur(2px);
  animation:halo 12s ease-in-out infinite;
}
@keyframes halo{50%{transform:scale(1.07);opacity:.86}}
.hero-device::after{
  content:'';position:absolute;z-index:0;right:-10px;bottom:-30px;
  width:190px;height:190px;background:var(--amber);
  opacity:.06;transform:rotate(14deg);
  -webkit-mask:var(--paw) center/contain no-repeat;
  mask:var(--paw) center/contain no-repeat;
  pointer-events:none;
}

/* ============================================================
   5 · 三条产品事实
   ============================================================ */
.facts{padding:82px 0 0;position:relative}
.facts-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);
}
.fact{
  padding:32px 40px 0 0;
  display:flex;flex-direction:column;gap:8px;
  border-right:1px solid var(--line);
  position:relative;
}
.fact:last-child{border-right:0}
.fact:not(:first-child){padding-left:40px}
.fact b{
  font-family:var(--font-display);font-size:32px;font-weight:400;
  letter-spacing:.02em;color:var(--ink);line-height:1.25;
  display:flex;align-items:baseline;gap:4px;
  font-variant-numeric:tabular-nums;
}
.fact b [data-count]{
  font-family:'Instrument Serif',var(--font-serif);
  font-variant-numeric:tabular-nums;
  font-size:1.22em;line-height:1;
}
.fact b i{
  font-style:normal;font-size:15px;color:var(--ink-3);
  letter-spacing:.08em;margin-left:2px;
}
.fact > span{font-size:13px;line-height:1.8;color:var(--ink-3);letter-spacing:.02em}
.fact::before{
  content:'';position:absolute;left:0;right:0;top:-1px;height:1px;
  background:var(--amber);opacity:.75;
  transform:scaleX(0);transform-origin:left;
  transition:transform .9s var(--ease-out) .1s;
}
.fact:not(:first-child)::before{left:40px}
.fact.in::before{transform:scaleX(1)}
.fact b{transition:color .3s}
.fact:hover b{color:var(--amber-deep)}

/* ============================================================
   6 · 跑马灯
   ============================================================ */
.marquee{
  margin-top:78px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,252,247,.5),rgba(247,232,216,.28));
  overflow:hidden;padding:18px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.marquee-track{
  display:flex;align-items:center;gap:0;width:max-content;
  animation:marquee 46s linear infinite;
}
.marquee:hover .marquee-track{animation-play-state:paused}
.mq-item{
  display:inline-flex;align-items:center;gap:20px;padding:0 20px;
  font-family:var(--font-serif);font-size:15.5px;letter-spacing:.14em;
  color:var(--ink-2);white-space:nowrap;
}
.mq-item em{
  font-family:'Instrument Serif',serif;font-style:italic;
  font-size:17px;letter-spacing:.02em;color:var(--ink-3);
}
.mq-sep{width:15px;height:15px;color:var(--amber);opacity:.45;flex-shrink:0}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ============================================================
   7 · 通用区块
   ============================================================ */
.section{padding:112px 0;position:relative}
.section-alt{background:linear-gradient(180deg,rgba(245,238,226,.9),rgba(247,241,231,.9));border-block:1px solid var(--line)}

/* 区块角落的淡爪印 */
#how::before,#who::after{
  content:'';position:absolute;pointer-events:none;
  background:var(--amber);opacity:.055;
  -webkit-mask:var(--paw) center/contain no-repeat;
  mask:var(--paw) center/contain no-repeat;
}
#how::before{right:5%;top:64px;width:96px;height:96px;transform:rotate(16deg)}
#who::after{left:1.5%;bottom:56px;width:120px;height:120px;transform:rotate(-12deg)}

.sec-head{max-width:680px;margin-bottom:60px;position:relative}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11.5px;letter-spacing:.24em;color:var(--amber);
  text-transform:uppercase;margin-bottom:18px;
}
.sec-tag .paw-ico{width:13px;height:13px;opacity:.55}
.sec-head h2,.pro-copy h2,.faq-head h2{
  font-size:clamp(28px,3.2vw,40px);line-height:1.36;letter-spacing:.02em;
  text-wrap:balance;
}
.sec-head h2 em,.pro-copy h2 em{
  font-style:italic;color:var(--amber);font-family:'Instrument Serif',var(--font-serif);
}
.sec-sub{
  margin-top:22px;font-size:15px;line-height:1.95;color:var(--ink-2);
  max-width:34em;
}
.sec-sub a{color:var(--amber);border-bottom:1px solid var(--amber-veil);transition:border-color .2s}
.sec-sub a:hover{border-bottom-color:var(--amber)}

.br-m,.br-d{display:none}

/* 章节之间的一枚爪印分隔 -------------------------------- */
.seal{
  display:flex;align-items:center;justify-content:center;gap:16px;
  padding:0 var(--gut);max-width:var(--wrap);margin:0 auto;
}
.seal span{height:1px;flex:1;background:linear-gradient(90deg,transparent,var(--line-2),transparent)}
.seal svg{width:16px;height:16px;color:var(--amber-soft);opacity:.45;transform:rotate(-8deg)}

/* 一句大字号引言 ---------------------------------------- */
.quote-band{padding:96px 0 104px;text-align:center;position:relative;overflow:hidden}
.quote-band::before{
  content:'';position:absolute;left:50%;top:50%;width:760px;height:380px;
  transform:translate(-50%,-50%);
  background:radial-gradient(ellipse at center,rgba(232,183,132,.22),transparent 68%);
  pointer-events:none;
}
.quote-band blockquote{margin:0;position:relative;z-index:1}
.quote-band p{
  font-family:var(--font-display);
  font-size:clamp(24px,2.9vw,36px);line-height:1.6;letter-spacing:.05em;
  color:var(--ink);
}
.quote-band p em{font-style:italic;color:var(--amber)}
.quote-band figcaption{
  margin-top:18px;font-family:'Instrument Serif',serif;font-style:italic;
  font-size:17px;letter-spacing:.03em;color:var(--ink-3);
}

/* ============================================================
   8 · 功能 Bento
   ============================================================ */
.bento{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.card{
  position:relative;
  grid-column:span 1;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-xl);padding:34px 32px 0;
  display:flex;flex-direction:column;
  min-height:420px;
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:border-color .28s,box-shadow .34s var(--ease-out),transform .34s var(--ease-out);
}
.card::after{
  content:'';position:absolute;right:-18px;bottom:-22px;
  width:130px;height:130px;background:var(--amber);
  opacity:0;transform:rotate(-10deg) scale(.9);
  -webkit-mask:var(--paw) center/contain no-repeat;
  mask:var(--paw) center/contain no-repeat;
  transition:opacity .45s var(--ease-out),transform .5s var(--ease-out);
  pointer-events:none;
}
.card:hover{
  border-color:var(--line-2);
  box-shadow:var(--shadow-warm);
  transform:translateY(-4px);
}
.card:hover::after{opacity:.055;transform:rotate(-4deg) scale(1)}
.card-wide{
  grid-column:span 2;
  flex-direction:row;align-items:center;gap:36px;
  padding:40px 36px 40px 40px;
}
.card-rev{flex-direction:row-reverse;padding:40px 40px 40px 36px}

.card-tx{flex:1;min-width:0;position:relative;z-index:2}
.card-ic{
  width:40px;height:40px;border-radius:var(--r-s);
  display:grid;place-items:center;margin-bottom:22px;
  background:var(--amber-tint);border:1px solid #EFD8BF;
  color:var(--amber-deep);
  transition:transform .45s var(--ease-spring),background .3s,color .3s;
}
.card-ic svg{width:19px;height:19px}
.card:hover .card-ic{transform:translateY(-2px) rotate(-6deg) scale(1.06);background:#F3DFC9}
.card h3{
  font-size:20px;letter-spacing:.03em;line-height:1.4;margin-bottom:12px;
  transition:color .25s;
}
.card:hover h3{color:var(--amber-deep)}
.card p{font-size:13.5px;line-height:1.9;color:var(--ink-2)}

.bullets{margin-top:18px;display:flex;flex-direction:column;gap:9px}
.bullets li{
  position:relative;padding-left:16px;
  font-size:12.5px;line-height:1.7;color:var(--ink-3);
}
.bullets li::before{
  content:'';position:absolute;left:0;top:.72em;
  width:5px;height:5px;border-radius:50%;
  background:var(--amber);opacity:.5;
}

/* 卡片里的手机裁切图 -------------------------------------- */
.card-shot{
  position:relative;
  flex:1 1 auto;margin-top:28px;
  width:100%;min-height:176px;overflow:hidden;
  border-radius:var(--r-l) var(--r-l) 0 0;
  border:1px solid var(--line);border-bottom:0;
  background:var(--paper);
  align-self:flex-end;
}
/* 绝对定位：图片的固有高度不参与卡片高度计算 */
.card-shot img{
  position:absolute;inset:0;
  width:100%;height:100%;object-fit:cover;object-position:top center;
  display:block;
  transition:transform .8s var(--ease-out);
}
.card:hover .card-shot img{transform:scale(1.035)}

.card-wide .card-shot{
  flex:0 0 300px;
  width:300px;height:420px;margin:0;align-self:center;
  border-radius:20px;border:1px solid var(--line);
  box-shadow:var(--shadow-warm);
  overflow:hidden;position:relative;
  background:var(--paper-2);padding:0;
}
.card-wide .card-shot img{border-radius:19px;object-position:top center}
.card:hover .card-wide .card-shot img,
.card-wide:hover .card-shot img{transform:scale(1.03) translateY(-2px)}
.card-rev .card-shot{order:0}

/* 纪念卡片的五个纸色（纯 CSS） */
.tpl-strip{
  display:flex;gap:8px;margin-top:auto;
  padding:28px 0 34px;
}
.tpl-strip span{
  flex:1;height:124px;border-radius:10px;
  background:var(--c);
  border:1px solid rgba(80,52,26,.10);
  box-shadow:inset 0 -18px 24px -18px rgba(80,52,26,.5);
  transition:transform .4s var(--ease-spring),box-shadow .4s;
}
.card:hover .tpl-strip span{transform:translateY(-4px) rotate(-.6deg);box-shadow:inset 0 -18px 24px -18px rgba(80,52,26,.5),0 8px 16px -12px rgba(80,52,26,.5)}
.tpl-strip span:nth-child(2){transition-delay:.04s}
.tpl-strip span:nth-child(3){transition-delay:.08s}
.tpl-strip span:nth-child(4){transition-delay:.12s}
.tpl-strip span:nth-child(5){transition-delay:.16s}

/* ============================================================
   9 · 三步
   ============================================================ */
.steps{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  border-top:1px solid var(--line-2);
  counter-reset:step;
}
.step{
  position:relative;
  padding:38px 44px 0 0;
  border-right:1px solid var(--line);
}
.step:last-child{border-right:0;padding-right:0}
.step:not(:first-child){padding-left:44px}
.step-head{display:flex;align-items:center;gap:14px;margin-bottom:22px}
.step-ic{
  width:46px;height:46px;border-radius:50%;flex-shrink:0;
  display:grid;place-items:center;
  background:var(--card);border:1px solid var(--line);
  color:var(--amber-deep);box-shadow:var(--shadow-card);
  transition:transform .55s var(--ease-spring),background .3s,color .3s,border-color .3s;
}
.step-ic svg{width:21px;height:21px}
.step:hover .step-ic{
  transform:translateY(-3px) rotate(-6deg) scale(1.04);
  background:var(--amber-tint);border-color:#EFD8BF;color:var(--amber);
}
.step-no{
  font-family:'Instrument Serif',serif;font-size:12.5px;letter-spacing:.24em;
  color:var(--amber);display:block;
  transition:transform .4s var(--ease-spring);
}
.step:hover .step-no{transform:translateX(4px)}
.step h3{
  font-size:22px;letter-spacing:.03em;margin-bottom:12px;
  line-height:1.45;
}
.step p{font-size:13.5px;line-height:1.9;color:var(--ink-2);max-width:22em}
.step::after{
  content:'';position:absolute;right:-3px;top:44px;
  width:5px;height:5px;border-radius:50%;background:var(--line-2);
}
.step:last-child::after{display:none}

.steps-note{
  display:flex;align-items:center;gap:9px;
  margin-top:38px;padding-top:26px;
  border-top:1px solid var(--line);
  font-family:var(--font-serif);font-size:13.5px;letter-spacing:.04em;
  color:var(--ink-3);
}
.steps-note .paw-ico{width:14px;height:14px;color:var(--amber-soft);opacity:.6;flex-shrink:0}

/* ============================================================
   10 · 写给谁
   ============================================================ */
.who-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);
  border-radius:var(--r-l);overflow:hidden;
}
.who{
  position:relative;
  background:var(--paper);padding:36px 30px 38px;
  transition:background .35s,box-shadow .35s;
  overflow:hidden;
}
.who:nth-child(even){background:rgba(255,252,247,.5)}
.who:hover{background:var(--card);box-shadow:inset 0 0 0 1px rgba(232,219,198,.7)}
.who::after{
  content:'';position:absolute;right:-10px;bottom:-14px;width:80px;height:80px;
  background:var(--amber);opacity:0;transform:rotate(12deg) scale(.8);
  -webkit-mask:var(--paw) center/contain no-repeat;
  mask:var(--paw) center/contain no-repeat;
  transition:opacity .4s,transform .5s var(--ease-out);
}
.who:hover::after{opacity:.06;transform:rotate(4deg) scale(1)}
.who-ic{
  width:46px;height:46px;border-radius:50%;display:grid;place-items:center;
  background:var(--amber-tint);border:1px solid #EFD8BF;
  color:var(--amber-deep);margin-bottom:20px;
  transition:transform .5s var(--ease-spring),background .3s,color .3s;
}
.who-ic svg{width:22px;height:22px}
.who:hover .who-ic{transform:translateY(-3px) rotate(-7deg) scale(1.05);background:#F3DFC9;color:var(--amber)}
.who h3{font-size:17px;letter-spacing:.03em;margin-bottom:11px;line-height:1.5}
.who p{font-size:13px;line-height:1.9;color:var(--ink-2)}

/* ============================================================
   11 · 会员
   ============================================================ */
.section-pro{background:linear-gradient(180deg,rgba(245,238,226,.92),rgba(243,233,217,.92));border-block:1px solid var(--line);position:relative;overflow:hidden}
.section-pro::after{
  content:'';position:absolute;right:2%;bottom:34px;width:150px;height:150px;
  background:var(--amber);opacity:.07;transform:rotate(12deg);
  -webkit-mask:var(--paw) center/contain no-repeat;
  mask:var(--paw) center/contain no-repeat;
  pointer-events:none;
}
.pro-grid{
  display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);
  gap:80px;align-items:start;position:relative;z-index:1;
}
.pro-copy h2{margin-bottom:0}
.pro-copy .sec-sub{margin-top:26px}
.pro-hand{
  display:block;margin-top:24px;
  font-family:var(--font-hand);font-size:18px;letter-spacing:.02em;
  color:var(--ink-3);transform:rotate(-2deg);
}

.pro-card{
  position:relative;
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-xl);padding:36px 34px 30px;
  box-shadow:var(--shadow-warm);
  transition:transform .4s var(--ease-out),box-shadow .4s;
}
.pro-card:hover{transform:translateY(-3px);box-shadow:0 24px 54px -26px rgba(80,52,26,.5)}
.pro-head{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-bottom:22px;border-bottom:1px solid var(--line);
}
.pro-badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11px;letter-spacing:.16em;color:var(--amber-deep);
  background:var(--amber-tint);border:1px solid #EFD8BF;
  padding:5px 12px;border-radius:999px;
}
.pro-badge svg{width:12px;height:12px;fill:currentColor;stroke:none}
.pro-head b{font-family:var(--font-serif);font-size:16px;font-weight:400;letter-spacing:.04em}

.pro-list{margin-top:6px}
.pro-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 0;border-bottom:1px solid var(--line);
  transition:padding-left .3s var(--ease-out);
}
.pro-list li:hover{padding-left:5px}
.pro-list li:last-child{border-bottom:0}
.pro-list svg{width:16px;height:16px;color:var(--amber);flex-shrink:0;margin-top:.34em}
.pro-list span{font-size:13px;line-height:1.7;color:var(--ink-3)}
.pro-list b{display:block;font-size:14px;font-weight:600;color:var(--ink);letter-spacing:.02em;margin-bottom:2px}

.pro-foot{margin-top:14px;font-size:11.5px;color:var(--ink-4);letter-spacing:.03em}

/* ============================================================
   12 · FAQ
   ============================================================ */
.faq-grid{
  display:grid;grid-template-columns:minmax(0,4fr) minmax(0,7fr);
  gap:80px;
}
.faq-head{position:sticky;top:calc(var(--head-h) + 40px);align-self:start}

.faq-list{border-top:1px solid var(--line)}
.faq{border-bottom:1px solid var(--line);transition:background .25s}
.faq[open]{background:linear-gradient(90deg,rgba(247,232,216,.34),transparent 70%)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 0;cursor:pointer;list-style:none;
  font-size:15.5px;letter-spacing:.02em;color:var(--ink);
  font-family:var(--font-serif);
  transition:color .18s,padding-left .25s var(--ease-out);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--amber-deep);padding-left:6px}
.faq summary svg{
  width:16px;height:16px;flex-shrink:0;color:var(--ink-4);
  transition:transform .3s var(--ease-out),color .2s;
}
.faq[open] summary svg{transform:rotate(180deg);color:var(--amber)}
.faq-body{padding:0 0 26px}
.faq-body p{font-size:13.5px;line-height:1.95;color:var(--ink-2);max-width:40em}
.faq[open] .faq-body{animation:faqIn .4s var(--ease-out)}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ============================================================
   13 · 下载 CTA
   ============================================================ */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#3B2D21 0%,var(--ink) 100%);
  color:var(--paper);
  padding:112px 0 120px;
}
.cta-band::before{
  content:'';position:absolute;left:50%;top:-160px;
  width:760px;height:420px;transform:translateX(-50%);
  pointer-events:none;
  background:radial-gradient(ellipse at center,rgba(226,164,104,.16),transparent 66%);
}
/* 走过的一串脚印 */
.trail{position:absolute;inset:0;pointer-events:none;z-index:0}
.trail i{
  position:absolute;left:var(--x);top:var(--y);
  width:var(--s,24px);height:var(--s,24px);
  background:#E9BE92;opacity:.16;
  -webkit-mask:var(--paw) center/contain no-repeat;
  mask:var(--paw) center/contain no-repeat;
  animation:drift var(--dur,16s) ease-in-out infinite;
  animation-delay:var(--delay,0s);
}
.cta-inner{position:relative;z-index:1;text-align:center}
.cta-inner .kicker{
  font-family:'Instrument Serif',serif;font-style:italic;
  font-size:16px;letter-spacing:.06em;color:rgba(232,183,132,.8);
  margin-bottom:18px;display:block;
}
.cta-band h2{
  font-size:clamp(32px,3.7vw,46px);line-height:1.32;letter-spacing:.03em;
  color:var(--paper);
}
.cta-band p{
  margin-top:20px;font-size:14.5px;letter-spacing:.04em;
  color:rgba(250,246,238,.62);
}
.store-inv{
  background:transparent;border-color:rgba(250,246,238,.26);
  box-shadow:none;
}
.store-inv svg{color:var(--paper)}
.store-inv .store-tx i{color:rgba(250,246,238,.52)}
.store-inv .store-tx b{color:var(--paper)}
.store-inv:hover{
  background:rgba(250,246,238,.07);border-color:rgba(250,246,238,.5);
  transform:translateY(-2px);
}

/* ============================================================
   14 · 页脚
   ============================================================ */
.site-foot{position:relative;background:var(--ink);color:var(--paper);padding:72px 0 34px;overflow:hidden}
.site-foot::before{
  content:'';position:absolute;left:-24px;top:-24px;width:132px;height:132px;
  background:var(--paper);opacity:.05;transform:rotate(-12deg);
  -webkit-mask:var(--paw) center/contain no-repeat;
  mask:var(--paw) center/contain no-repeat;
}
.foot-grid{
  position:relative;
  display:grid;grid-template-columns:minmax(0,4fr) repeat(3,minmax(0,2fr));
  gap:48px;padding-bottom:52px;
}
.brand-inv .brand-name{color:var(--paper)}
.brand-inv .brand-name em{color:rgba(250,246,238,.45)}
.brand-inv .brand-mark{
  border-radius:11px;
  box-shadow:0 0 0 1px rgba(250,246,238,.20),0 8px 18px -10px rgba(0,0,0,.7);
}
.foot-brand p{
  margin-top:18px;font-size:13px;letter-spacing:.05em;
  color:rgba(250,246,238,.5);
}
.foot-brand .foot-hand{
  font-family:var(--font-hand);font-size:16px;letter-spacing:.04em;
  color:rgba(232,183,132,.62);margin-top:10px;transform:rotate(-2deg);
  display:inline-block;
}
.foot-col h4{
  font-family:var(--font-sans);font-size:11px;font-weight:600;
  letter-spacing:.2em;color:rgba(250,246,238,.4);
  text-transform:uppercase;margin-bottom:18px;
}
.foot-col a{
  display:block;font-size:13.5px;letter-spacing:.03em;
  color:rgba(250,246,238,.78);padding:7px 0;
  transition:color .18s,transform .25s var(--ease-out);
}
.foot-col a:hover{color:var(--paper);transform:translateX(3px)}

.foot-bottom{
  position:relative;
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
  padding-top:26px;border-top:1px solid rgba(250,246,238,.12);
  font-size:11.5px;letter-spacing:.05em;color:rgba(250,246,238,.38);
}
.foot-bottom b{font-weight:400;color:rgba(250,246,238,.5)}
.icp{display:inline-flex;align-items:center;gap:8px}
.icp a{transition:color .18s;color:inherit}
.icp a:hover{color:rgba(250,246,238,.75)}
.icp svg{width:12px;height:12px;opacity:.5}

/* ============================================================
   15 · Toast
   ============================================================ */
.toast-wrap{
  position:fixed;left:50%;bottom:26px;z-index:200;
  transform:translateX(-50%);
  width:calc(100% - 36px);max-width:430px;
  display:flex;flex-direction:column;align-items:center;gap:10px;
  pointer-events:none;
}
.toast{
  display:flex;align-items:center;gap:11px;
  background:rgba(48,36,26,.96);
  color:var(--paper);
  padding:12px 20px 12px 16px;border-radius:999px;
  font-size:13.5px;line-height:1.5;letter-spacing:.02em;
  box-shadow:0 18px 40px -18px rgba(40,26,14,.85);
  border:1px solid rgba(250,246,238,.12);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  opacity:0;transform:translateY(16px) scale(.96);
  animation:toastIn .42s var(--ease-spring) forwards;
  max-width:100%;
}
.toast svg{width:18px;height:18px;flex-shrink:0;color:var(--amber-soft);fill:currentColor;stroke:none}
.toast.out{animation:toastOut .3s var(--ease-out) forwards}
@keyframes toastIn{to{opacity:1;transform:none}}
@keyframes toastOut{to{opacity:0;transform:translateY(10px) scale(.97)}}

/* ============================================================
   16 · 入场动效
   ============================================================ */
.reveal{
  opacity:0;transform:translateY(18px);
  transition:opacity .8s var(--ease-out),transform .8s var(--ease-out);
}
.reveal.in{opacity:1;transform:none}
/* 卡片额外给一点缩放，落下时更有重量 */
.card.reveal{transform:translateY(22px) scale(.99)}
.card.reveal.in{transform:none}

/* 点击时的爪印（只在 Hero 里生成） */
.paw-stamp{
  position:fixed;z-index:5;pointer-events:none;
  width:26px;height:26px;background:var(--amber);
  -webkit-mask:var(--paw) center/contain no-repeat;
  mask:var(--paw) center/contain no-repeat;
  transform:translate(-50%,-50%) rotate(var(--sr,-10deg)) scale(.6);
  animation:stamp 1.1s var(--ease-out) forwards;
}
@keyframes stamp{
  0%{opacity:0;transform:translate(-50%,-50%) rotate(var(--sr,-10deg)) scale(.4)}
  22%{opacity:.24;transform:translate(-50%,-50%) rotate(var(--sr,-10deg)) scale(1)}
  100%{opacity:0;transform:translate(-50%,-62%) rotate(var(--sr,-10deg)) scale(1.15)}
}

@media (prefers-reduced-motion:reduce){
  .reveal,.card.reveal{opacity:1 !important;transform:none !important;transition:none}
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important}
  .tline>span{transform:none !important}
  .paw,.marquee-track,.cta-band::after,.hero-device::before{animation:none !important}
}

/* ============================================================
   17 · 文档页（隐私政策 / 用户协议）
   ============================================================ */
.doc-head{
  padding:calc(var(--head-h) + 64px) 0 0;
}
.doc-grid{
  display:grid;grid-template-columns:minmax(0,760px) 220px;
  gap:80px;justify-content:center;
  padding-bottom:110px;
}
.doc-crumb{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;letter-spacing:.06em;color:var(--ink-3);
  margin-bottom:26px;transition:color .2s;
}
.doc-crumb:hover{color:var(--amber-deep)}
.doc-crumb svg{width:14px;height:14px}
.doc-title{
  font-size:clamp(30px,3.4vw,42px);line-height:1.3;letter-spacing:.03em;
}
.doc-meta{
  display:flex;gap:18px;flex-wrap:wrap;align-items:center;
  margin-top:18px;padding-bottom:26px;border-bottom:1px solid var(--line);
  font-size:12px;letter-spacing:.05em;color:var(--ink-3);
}
.doc-meta span{display:inline-flex;align-items:center;gap:6px}
.doc-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-4)}
.doc-intro{
  margin:30px 0 8px;font-size:15px;line-height:2;color:var(--ink-2);
  padding:22px 24px;background:rgba(247,232,216,.42);
  border-left:2px solid var(--amber-soft);border-radius:0 var(--r-s) var(--r-s) 0;
}
.doc-body h2{
  font-family:var(--font-display);
  font-size:23px;line-height:1.5;letter-spacing:.02em;
  margin:48px 0 14px;padding-top:8px;
  display:flex;gap:12px;align-items:baseline;
}
.doc-body h2 .n{
  font-family:'Instrument Serif',serif;font-size:15px;
  color:var(--amber);letter-spacing:.08em;flex-shrink:0;
}
.doc-body h3{
  font-family:var(--font-serif);font-size:16.5px;font-weight:400;
  margin:26px 0 8px;color:var(--ink);
}
.doc-body p{font-size:14px;line-height:2;color:var(--ink-2);margin:10px 0}
.doc-body ul{margin:10px 0}
.doc-body ul li{
  position:relative;padding-left:16px;margin:6px 0;
  font-size:14px;line-height:1.95;color:var(--ink-2);
}
.doc-body ul li::before{
  content:'';position:absolute;left:2px;top:.78em;width:4px;height:4px;
  border-radius:50%;background:var(--amber);opacity:.55;
}
.doc-body strong{color:var(--ink);font-weight:600}
.doc-body a{color:var(--amber);border-bottom:1px solid var(--amber-veil)}
.doc-body a:hover{border-bottom-color:var(--amber)}
.doc-note{
  margin:22px 0;padding:16px 20px;border-radius:var(--r-m);
  background:var(--card);border:1px solid var(--line);
  font-size:13.5px;line-height:1.9;color:var(--ink-2);
  box-shadow:var(--shadow-card);
}
.doc-note b{color:var(--ink)}
.doc-toc{position:sticky;top:calc(var(--head-h) + 34px);align-self:start}
.doc-toc h4{
  font-family:var(--font-sans);font-size:10.5px;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;color:var(--ink-4);
  margin-bottom:14px;
}
.doc-toc a{
  display:block;font-size:12.5px;line-height:1.6;color:var(--ink-3);
  padding:6px 0 6px 12px;border-left:1px solid var(--line);
  transition:color .2s,border-color .2s,padding-left .25s var(--ease-out);
}
.doc-toc a:hover,.doc-toc a.on{color:var(--amber-deep);border-left-color:var(--amber);padding-left:16px}
.doc-footnote{
  margin-top:56px;padding-top:26px;border-top:1px solid var(--line);
  font-size:12.5px;line-height:1.9;color:var(--ink-3);
}

/* ============================================================
   18 · 响应式
   ============================================================ */
@media (max-width:1180px){
  :root{--gut:44px}
  .hero-device{height:600px}
  .phone-front{width:262px;left:20px;top:30px}
  .phone-back{width:206px;right:10px;top:96px}
  .card-wide{padding:34px 30px 34px 34px;gap:28px}
  .card-rev{padding:34px 34px 34px 30px}
  .card-wide .card-shot{width:240px}
  .pro-grid,.faq-grid{gap:56px}
  .doc-grid{grid-template-columns:minmax(0,1fr) 200px;gap:56px}
  .hand-note{left:-10px}
}

@media (max-width:980px){
  :root{--gut:32px}
  .nav{gap:22px}
  .nav a{font-size:13px}

  .hero{padding:calc(var(--head-h) + 40px) 0 56px;min-height:0}
  .hero-grid{grid-template-columns:1fr;gap:56px}
  .hero-copy{max-width:600px}
  .hero-device{height:640px;margin:0 auto;max-width:620px;justify-self:center;width:100%}
  .hand-note{display:none}

  .facts{padding-top:64px}
  .fact{padding-right:24px}
  .fact:not(:first-child){padding-left:24px}
  .fact b{font-size:27px}

  .section{padding:88px 0}
  .bento{grid-template-columns:repeat(2,1fr)}
  .card-wide{grid-column:span 2}
  .card-wide .card-shot{width:250px}

  .steps{grid-template-columns:1fr;border-top:0}
  .step,.step:not(:first-child){padding:26px 0;border-right:0;border-top:1px solid var(--line)}
  .step-no{margin-bottom:14px}
  .step h3{font-size:19px;margin-bottom:8px}
  .step::after{display:none}

  .who-grid{grid-template-columns:repeat(2,1fr)}
  .pro-grid,.faq-grid{grid-template-columns:1fr;gap:48px}
  .faq-head{position:static}
  .cta-band{padding:88px 0 96px}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:40px}
  .foot-brand{grid-column:span 2}

  .doc-head{padding-top:calc(var(--head-h) + 42px)}
  .doc-grid{grid-template-columns:minmax(0,1fr);gap:0;padding-bottom:80px}
  .doc-toc{display:none}
}

@media (max-width:720px){
  :root{--gut:22px;--head-h:64px}
  body{font-size:14.5px;background-attachment:scroll}

  .nav{
    position:fixed;inset:var(--head-h) 0 auto;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line);
    padding:8px 22px 22px;margin:0;
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .22s,transform .22s;
    box-shadow:0 18px 30px -24px rgba(58,36,18,.5);
  }
  .nav.open{opacity:1;transform:none;pointer-events:auto}
  .nav a{padding:14px 0;font-size:15px;border-bottom:1px solid var(--line)}
  .nav a:last-child{border-bottom:0}
  .nav a::after{display:none}
  .nav a.is-active{color:var(--amber-deep)}

  .nav-toggle{
    display:flex;flex-direction:column;justify-content:center;gap:5px;
    width:38px;height:38px;padding:0;border:1px solid var(--line);
    border-radius:10px;background:var(--card);cursor:pointer;
  }
  .nav-toggle span{
    display:block;width:15px;height:1.5px;background:var(--ink);
    margin:0 auto;transition:transform .24s,opacity .24s;
  }
  .nav-toggle.on span:first-child{transform:translateY(3.25px) rotate(45deg)}
  .nav-toggle.on span:last-child{transform:translateY(-3.25px) rotate(-45deg)}
  .head-cta .btn-s{display:none}

  .hero{padding:calc(var(--head-h) + 30px) 0 40px;min-height:0}
  h1{font-size:clamp(34px,9.2vw,44px);line-height:1.24}
  .lede{font-size:14.5px;margin-top:20px}
  .eyebrow{margin-bottom:16px;font-size:10.5px}
  .store-row{margin-top:26px;gap:10px}
  .store{height:52px;padding:0 15px;gap:8px;flex:0 1 auto;justify-content:flex-start}
  .store svg{width:20px;height:20px}
  .store-tx i{font-size:8.5px;letter-spacing:.06em}
  .store-tx b{font-size:13px}
  .hero-note{margin-top:16px;font-size:11.5px}

  .hero-device{height:520px;margin-top:8px}
  .phone{border-radius:30px;padding:6px}
  .phone::after{inset:6px;border-radius:24px}
  .phone-screen{border-radius:24px}
  .phone-front{width:222px;left:0;top:22px}
  .phone-back{width:172px;right:0;top:74px}
  .hero-device::before{width:320px;height:320px;right:-40px;top:10px}
  .hero-device::after{width:120px;height:120px;right:-6px;bottom:-16px}

  .paw-1{left:-2%;top:16%;--w:26px}
  .paw-4{right:-4%;top:12%;--w:30px}
  .paw-5,.paw-6{display:none}

  .facts{padding-top:52px}
  .facts-grid{grid-template-columns:1fr;border-top:1px solid var(--line)}
  .fact{
    padding:20px 0 !important;border-right:0;
    border-bottom:1px solid var(--line);
    flex-direction:row;align-items:baseline;gap:14px;
  }
  .fact:last-child{border-bottom:0}
  .fact b{font-size:23px;min-width:78px;flex-shrink:0}
  .fact > span{font-size:12.5px}
  .fact::before{display:none}

  .marquee{margin-top:52px;padding:14px 0}
  .mq-item{font-size:13.5px;gap:16px;padding:0 16px}
  .mq-sep{width:12px;height:12px}

  .section{padding:72px 0}
  .sec-head{margin-bottom:38px}
  .sec-sub{font-size:14px}
  .br-m,.br-d{display:inline}

  .quote-band{padding:64px 0 70px}
  .quote-band p{font-size:clamp(21px,6vw,28px);line-height:1.65}
  .quote-band figcaption{font-size:15px}

  .bento{grid-template-columns:1fr;gap:16px}
  .card-wide,.card-rev{grid-column:span 1}
  .card{padding:28px 24px 0;border-radius:20px;min-height:0}
  .card-wide,.card-rev{
    flex-direction:column;align-items:stretch;gap:0;
    padding:28px 24px 0;
  }
  .card-wide .card-tx,.card-rev .card-tx{order:0}
  .card-wide .card-shot,.card-rev .card-shot{
    order:1;width:100%;max-width:none;height:300px;margin-top:26px;
    border-radius:16px 16px 0 0;border-bottom:0;
    box-shadow:none;padding:0;background:var(--paper-2);
  }
  .card-wide .card-shot img{border-radius:16px 16px 0 0}
  .card h3{font-size:18.5px}
  .card p{font-size:13px}
  .card-shot{flex:none;height:180px;min-height:0}
  .card:hover{transform:none}

  .step,.step:not(:first-child){padding:22px 0;border-top:1px solid var(--line)}
  .step-no{margin-bottom:12px;font-size:12px}
  .step h3{font-size:18px}
  .step p{font-size:13px;max-width:none}

  .who-grid{grid-template-columns:1fr}
  .who{padding:26px 22px 28px}
  .who-ic{margin-bottom:16px}

  .pro-card{padding:26px 22px 22px}
  .pro-head{flex-direction:column;align-items:flex-start;gap:12px;padding-bottom:18px}
  .pro-list li{padding:13px 0}

  .faq summary{font-size:14.5px;padding:20px 0;gap:16px}
  .faq-body p{font-size:13px}

  .cta-band{padding:72px 0 80px}
  .cta-band p{font-size:13.5px}
  .trail{display:none}
  .store-row.center{flex-direction:column;align-items:stretch}
  .store-row.center .store{flex:none;width:100%;justify-content:center}

  .site-foot{padding:52px 0 28px}
  .foot-grid{grid-template-columns:repeat(3,1fr);gap:30px 14px;padding-bottom:36px}
  .foot-brand{grid-column:span 3}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px;font-size:11px}

  .toast-wrap{bottom:18px;width:calc(100% - 28px)}
  .toast{font-size:12.5px;padding:11px 17px 11px 14px}

  .doc-head{padding-top:calc(var(--head-h) + 30px)}
  .doc-grid{padding-bottom:64px}
  .doc-intro{padding:18px;font-size:14px;line-height:1.9}
  .doc-body h2{font-size:20px;margin-top:38px}
  .doc-body p,.doc-body ul li{font-size:13.5px;line-height:1.95}
  .doc-meta{flex-direction:column;align-items:flex-start;gap:5px;font-size:11.5px}
  .doc-meta .dot{display:none}
  .doc-title{font-size:30px}
}

@media (max-width:380px){
  .hero-device{height:470px}
  .phone-front{width:198px}
  .phone-back{width:152px;top:66px}
}