/* ============================================================
   扬帆小船 · AI 商企联盟  —— 水墨官网设计系统
   依宣纸为底，以墨分五色，朱砂为印。
   ============================================================ */

/* ---------- 0. 令 ---------- */
:root{
  /* 纸 */
  --paper:   #f3eee1;
  --paper-2: #ece5d2;
  --paper-3: #e2d9c2;
  /* 墨分五色 */
  --ink:   #211e1a;
  --ink-2: #3d3a33;
  --ink-3: #6b665a;
  --ink-4: #9a9280;
  --ink-5: #c2bAA4;
  /* 朱砂 */
  --seal:   #a23c2a;
  --seal-d: #822d1e;
  --seal-l: #c05a44;
  /* 玄墨（深色段落/页脚） */
  --dark:    #181512;
  --dark-2:  #221f19;
  --dark-p:  #ece5d2;
  --dark-p3: #b7ae99;
  --line:        rgba(33,30,26,.16);
  --line-strong: rgba(33,30,26,.4);
  --line-dark:   rgba(236,229,210,.16);

  --f-brush: "Ma Shan Zheng","STKaiti","KaiTi","Kaiti SC","楷体",serif;
  --f-body:  "Noto Serif SC","Songti SC","SimSun","宋体",serif;
  --f-kai:   "Kaiti SC","STKaiti","KaiTi","楷体",serif;

  --fs-hero:  clamp(46px, 11.5vw, 112px);
  --fs-phero: clamp(38px, 8.4vw, 68px);
  --fs-h2:    clamp(28px, 5.2vw, 44px);
  --fs-h3:    clamp(21px, 3.4vw, 27px);

  --wrap: 1120px;
  --wrap-n: 880px;
  --pad: clamp(20px, 4.5vw, 40px);
  --sec: clamp(64px, 11vw, 132px);

  --ease-brush: cubic-bezier(.22,.9,.28,1);
  --shadow-ink: 0 14px 40px -18px rgba(33,30,26,.4);
}

/* ---------- 1. 纸 ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; overflow-x:hidden; overflow-x:clip; }
html,body{ max-width:100%; }
[id]{ scroll-margin-top:86px; }
body{
  margin:0;
  font-family:var(--f-body);
  font-size:16px; line-height:1.9;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  word-break:break-word;
}
/* 宣纸肌理 */
body::before{
  content:""; position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3CfeComponentTransfer%3E%3CfeFuncA type='linear' slope='0.055'/%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}
/* 暗角 */
body::after{
  content:""; position:fixed; inset:0; z-index:0; pointer-events:none;
  background:radial-gradient(120% 90% at 50% 30%, transparent 60%, rgba(33,30,26,.05) 100%);
}
main, footer, header{ position:relative; z-index:1; }
img,svg,canvas{ max-width:100%; vertical-align:middle; }
a{ color:inherit; }
p{ margin:0 0 1em; }
h1,h2,h3,h4{ margin:0 0 .5em; font-weight:400; line-height:1.35; }
ul,ol{ margin:0 0 1em; padding-left:1.4em; }
::selection{ background:var(--seal); color:var(--paper); }
:focus-visible{ outline:2px dashed var(--seal); outline-offset:3px; border-radius:2px; }
::-webkit-scrollbar{ width:10px; height:10px; }
::-webkit-scrollbar-thumb{ background:var(--ink-4); border-radius:6px; border:2px solid var(--paper); }
::-webkit-scrollbar-track{ background:var(--paper-2); }

.skip-link{
  position:fixed; left:12px; top:-60px; z-index:300;
  background:var(--ink); color:var(--paper);
  padding:8px 16px; border-radius:3px; font-size:14px;
  transition:top .25s;
}
.skip-link:focus{ top:12px; }

/* ---------- 2. 版 ---------- */
.wrap{ max-width:var(--wrap); margin:0 auto; padding:0 var(--pad); }
.wrap--n{ max-width:var(--wrap-n); }
.section{ padding:var(--sec) 0; position:relative; overflow:hidden; }
.section--tint{ background:linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 18%, var(--paper-2) 82%, var(--paper) 100%); }
.section--dark{ background:var(--dark); color:var(--dark-p); }
.section--dark .sec-sub{ color:var(--dark-p3); }
.section--dark .brushline{ color:var(--seal-l); }

.g,.g2,.g3,.g4{ display:grid; gap:clamp(16px,2.6vw,28px); }
.g2{ grid-template-columns:1fr; }
.g3{ grid-template-columns:1fr; }
.g4{ grid-template-columns:1fr 1fr; }
@media(min-width:640px){ .g2.sm2{ grid-template-columns:1fr 1fr; } .g4{ grid-template-columns:1fr 1fr; } }
@media(min-width:880px){ .g2{ grid-template-columns:1fr 1fr; } .g3{ grid-template-columns:repeat(3,1fr); } .g4{ grid-template-columns:repeat(4,1fr); } }

/* 竖排装饰 */
.vert{
  writing-mode:vertical-rl;
  letter-spacing:.42em;
  font-family:var(--f-kai);
}

/* ---------- 3. 字 ---------- */
.brush{ font-family:var(--f-brush); font-weight:400; }
.kai{ font-family:var(--f-kai); }
.lead{ font-size:clamp(16px,2vw,18.5px); color:var(--ink-2); }
.muted{ color:var(--ink-3); }
.small{ font-size:13.5px; }
.num{ font-variant-numeric:tabular-nums; }

.sec-head{ margin-bottom:clamp(30px,5vw,54px); position:relative; }
.sec-head .eyebrow{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--f-kai); font-size:14px; letter-spacing:.5em;
  color:var(--seal); margin-bottom:10px;
}
.sec-head .eyebrow::before{
  content:""; width:26px; height:1px; background:var(--seal); opacity:.7;
}
.sec-head h2{
  font-family:var(--f-brush); font-size:var(--fs-h2); font-weight:400;
  letter-spacing:.06em;
}
.sec-head .sec-sub{ color:var(--ink-3); margin-top:6px; max-width:38em; }
.sec-head--c{ text-align:center; }
.sec-head--c .eyebrow::before{ display:none; }
.sec-head--c .sec-sub{ margin-left:auto; margin-right:auto; }
.brushline{ width:120px; height:10px; color:var(--seal); display:block; margin-top:12px; }
.sec-head--c .brushline{ margin:14px auto 0; }

/* 印章 */
.seal{
  display:inline-flex; align-items:center; justify-content:center;
  background:var(--seal); color:#f6efdd;
  font-family:var(--f-brush);
  border-radius:6px 3px 7px 3px;
  box-shadow:inset 0 0 0 1.5px rgba(246,239,221,.35), inset 0 0 14px rgba(0,0,0,.18);
  transform:rotate(-2.5deg);
  user-select:none;
}
.seal--sq{ width:58px; height:58px; font-size:24px; line-height:1.05; }
.seal--grid{
  width:64px; height:64px; font-size:26px;
  display:grid; grid-template-columns:1fr 1fr; place-items:center;
  line-height:1; padding:6px; gap:0 2px;
}
.seal--tag{ padding:5px 12px 6px; font-size:16px; letter-spacing:.2em; }
.seal--v{ writing-mode:vertical-rl; padding:13px 9px; font-size:19px; letter-spacing:.3em; }
.seal--sm{ width:34px; height:34px; font-size:15px; border-radius:4px 2px 5px 2px; }
/* 篆印读序：右列先读，自上而下 */
.seal--grid .c1{ grid-area:1/2; } .seal--grid .c2{ grid-area:2/2; }
.seal--grid .c3{ grid-area:1/1; } .seal--grid .c4{ grid-area:2/1; }

/* ---------- 4. 器（按钮/标签） ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  font-family:var(--f-brush);
  font-size:19px; letter-spacing:.18em; text-indent:.18em;
  padding:13px 30px 15px;
  border-radius:3px; border:1.5px solid var(--ink);
  background:transparent; color:var(--ink);
  cursor:pointer; text-decoration:none;
  transition:transform .18s var(--ease-brush), box-shadow .18s, background .18s, color .18s, border-color .18s;
  position:relative;
}
.btn:hover{ transform:translateY(-2px); box-shadow:var(--shadow-ink); }
.btn:active{ transform:translateY(0); }
.btn--ink{ background:var(--ink); color:var(--paper); }
.btn--seal{ background:var(--seal); border-color:var(--seal); color:#f6efdd; }
.btn--seal:hover{ background:var(--seal-d); border-color:var(--seal-d); }
.btn--ghost{ border-color:var(--line-strong); }
.btn--ghost:hover{ border-color:var(--ink); }
.section--dark .btn{ border-color:var(--dark-p); color:var(--dark-p); }
.section--dark .btn--seal{ background:var(--seal); border-color:var(--seal); color:#f6efdd; }
.btn-row{ display:flex; flex-wrap:wrap; gap:14px; align-items:center; }

.tag{
  display:inline-block; font-family:var(--f-kai); font-size:13px; letter-spacing:.22em;
  color:var(--ink-3); border:1px solid var(--line); border-radius:2px;
  padding:3px 10px 4px 12px; margin:0 6px 6px 0; background:rgba(255,255,255,.25);
}
.badge{
  display:inline-block; background:var(--seal); color:#f6efdd;
  font-family:var(--f-kai); font-size:12.5px; letter-spacing:.14em;
  padding:2px 9px 3px; border-radius:2px; vertical-align:2px;
}
.badge--dark{ background:var(--ink-2); }

/* ---------- 5. 卡 ---------- */
.card{
  background:linear-gradient(175deg, rgba(255,255,255,.42), rgba(255,255,255,0) 46%), var(--paper-2);
  border:1px solid var(--line);
  border-radius:4px;
  padding:clamp(20px,3vw,30px);
  position:relative;
  transition:transform .25s var(--ease-brush), box-shadow .25s, border-color .25s;
}
.card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-ink); border-color:rgba(33,30,26,.28); }
.card h3{ font-family:var(--f-brush); font-size:var(--fs-h3); letter-spacing:.05em; }
.card .c-ico{ margin-bottom:14px; }
.c-ico .ico{ width:40px; height:40px; color:var(--ink-2); }
.c-ico{ position:relative; padding-bottom:10px; }
.c-ico::after{
  content:""; position:absolute; left:2px; bottom:0; width:34px; height:3px;
  background:var(--seal); border-radius:60% 40% 55% 45%/70% 60% 40% 30%;
  opacity:.85;
}
.card p{ color:var(--ink-2); margin:0; font-size:15.5px; }

.note{
  background:var(--paper-2); border-left:3px solid var(--ink-4);
  padding:16px 20px; color:var(--ink-3); font-size:14.5px; line-height:1.85;
  border-radius:0 3px 3px 0;
}
.note--seal{ border-left-color:var(--seal); }
.note .kai{ color:var(--ink-2); }

/* ---------- 6. 顶栏 ---------- */
.topbar{
  background:var(--seal); color:#f6efdd;
  font-size:13.5px; letter-spacing:.12em;
  text-align:center; padding:7px 40px 8px;
  position:relative; z-index:60;
}
.topbar a{ color:inherit; text-decoration:underline; text-underline-offset:3px; }
.topbar__x{
  position:absolute; right:6px; top:50%; transform:translateY(-50%);
  background:none; border:0; color:inherit; cursor:pointer;
  font-size:15px; line-height:1; padding:8px; opacity:.85;
}
.topbar__x:hover{ opacity:1; }

.hdr{
  position:sticky; top:0; z-index:50;
  transition:background .3s, box-shadow .3s, border-color .3s;
  border-bottom:1px solid transparent;
  background:linear-gradient(180deg, rgba(243,238,225,.92), rgba(243,238,225,.78));
  backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px);
}
.hdr.is-scrolled{ border-bottom-color:var(--line); box-shadow:0 10px 30px -22px rgba(33,30,26,.5); }
.hdr__in{
  max-width:var(--wrap); margin:0 auto; padding:0 var(--pad);
  display:flex; align-items:center; gap:18px; height:68px;
}
.brand{ display:flex; align-items:center; gap:11px; text-decoration:none; margin-right:auto; }
.brand img{ width:42px; height:auto; }
.brand__t{ font-family:var(--f-brush); font-size:23px; letter-spacing:.1em; line-height:1.1; }
.brand__s{ display:block; font-family:var(--f-kai); font-size:10.5px; letter-spacing:.34em; color:var(--ink-3); }

.nav{ display:none; align-items:center; gap:clamp(14px,2vw,26px); }
.nav a{
  text-decoration:none; font-size:15.5px; letter-spacing:.08em; color:var(--ink-2);
  padding:6px 2px; position:relative;
}
.nav a::after{
  content:""; position:absolute; left:50%; right:50%; bottom:0; height:2px;
  background:var(--seal); border-radius:1px; transition:left .22s var(--ease-brush), right .22s var(--ease-brush);
  opacity:.9;
}
.nav a:hover::after, .nav a[aria-current="page"]::after{ left:0; right:0; }
.nav a[aria-current="page"]{ color:var(--ink); }
.hdr__cta{ display:none; }
.hdr__cta .btn{ font-size:16.5px; padding:8px 18px 10px; letter-spacing:.14em; text-indent:.14em; }

.burger{
  display:inline-flex; flex-direction:column; justify-content:center; gap:6px;
  width:46px; height:46px; padding:11px;
  background:none; border:0; cursor:pointer; z-index:80;
}
.burger span{
  display:block; height:2px; background:var(--ink); border-radius:2px;
  transition:transform .3s var(--ease-brush), opacity .2s, width .3s;
}
.burger span:nth-child(2){ width:72%; }
.burger:hover span:nth-child(2){ width:100%; }
.burger.is-x span:nth-child(1){ transform:translateY(8px) rotate(45deg); }
.burger.is-x span:nth-child(2){ opacity:0; }
.burger.is-x span:nth-child(3){ transform:translateY(-8px) rotate(-45deg); }
@media(min-width:1020px){
  .nav{ display:inline-flex; }
  .hdr__cta{ display:inline-flex; }
  .burger{ display:none; }
}

/* 移动全屏墨帘菜单 */
.mmenu{
  position:fixed; inset:0; z-index:45;
  background:var(--paper);
  padding:96px var(--pad) 40px;
  display:flex; flex-direction:column;
  transform:translateY(-102%);
  transition:transform .45s var(--ease-brush);
  overflow-y:auto;
}
.mmenu::after{ /* 纸纹 */
  content:""; position:absolute; inset:0; pointer-events:none; opacity:.6;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3CfeComponentTransfer%3E%3CfeFuncA type='linear' slope='0.05'/%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}
.mmenu.is-open{ transform:translateY(0); }
.mmenu__list{ list-style:none; margin:auto 0; padding:0; position:relative; z-index:1; }
.mmenu__list a{
  display:flex; align-items:baseline; gap:16px;
  text-decoration:none; padding:13px 4px;
  border-bottom:1px solid var(--line);
  opacity:0; transform:translateY(14px);
}
.mmenu.is-open .mmenu__list a{ animation:mUp .5s var(--ease-brush) forwards; animation-delay:calc(.06s + var(--i)*.055s); }
@keyframes mUp{ to{ opacity:1; transform:none; } }
.mmenu__no{ font-family:var(--f-kai); font-size:13px; color:var(--seal); letter-spacing:.2em; min-width:2.2em; }
.mmenu__t{ font-family:var(--f-brush); font-size:30px; letter-spacing:.1em; }
.mmenu__d{ margin-left:auto; font-size:12.5px; color:var(--ink-4); letter-spacing:.2em; }
.mmenu__list a[aria-current="page"] .mmenu__t{ color:var(--seal); }
.mmenu__ft{ position:relative; z-index:1; margin-top:26px; color:var(--ink-4); font-size:12.5px; letter-spacing:.24em; display:flex; justify-content:space-between; align-items:center; }

/* ---------- 7. 页首横幅（子页） ---------- */
.phero{
  position:relative; overflow:hidden;
  padding:clamp(64px,10vw,110px) 0 clamp(46px,7vw,80px);
  background:
    radial-gradient(90% 120% at 85% -10%, rgba(33,30,26,.045), transparent 55%),
    linear-gradient(180deg, var(--paper-2), var(--paper));
}
.phero__mtn{ position:absolute; left:0; right:0; bottom:-2px; width:100%; height:auto; pointer-events:none; }
.phero__in{ position:relative; }
.phero .eyebrow{
  font-family:var(--f-kai); color:var(--seal); letter-spacing:.5em; font-size:14px;
  display:inline-flex; gap:12px; align-items:center; margin-bottom:8px;
}
.phero .eyebrow::before{ content:""; width:30px; height:1px; background:var(--seal); opacity:.7; }
.phero h1{
  font-family:var(--f-brush); font-size:var(--fs-phero); font-weight:400; letter-spacing:.08em;
  margin:0 0 12px;
}
.phero__sub{ color:var(--ink-3); max-width:34em; font-size:clamp(15px,1.9vw,17px); }
.phero__seal{ position:absolute; right:var(--pad); top:8px; opacity:.92; }
@media(max-width:640px){ .phero__seal{ display:none; } }

/* 浪纹（子页底部装饰） */
.waves{ display:block; width:100%; height:auto; color:var(--ink-4); }

/* ---------- 8. 首页 hero ---------- */
.hero{
  position:relative; min-height:100vh; min-height:100svh;
  display:flex; flex-direction:column;
  overflow:hidden;
}
.hero__canvas{ position:absolute; inset:0; z-index:0; width:100%; height:100%; }
.hero__in{
  position:relative; z-index:2; flex:1;
  max-width:var(--wrap); margin:0 auto; padding:110px var(--pad) 30px;
  display:flex; flex-direction:column; justify-content:center;
  width:100%;
}
.hero__eyebrow{
  font-family:var(--f-kai); font-size:clamp(13px,1.6vw,15.5px);
  letter-spacing:.46em; color:var(--ink-3);
  display:flex; align-items:center; gap:14px; margin-bottom:clamp(10px,2vw,20px);
}
.hero__eyebrow::before{ content:""; width:36px; height:1px; background:var(--ink-4); }
.hero__title{
  font-family:var(--f-brush); font-weight:400;
  font-size:var(--fs-hero); letter-spacing:.04em;
  line-height:1.08; margin:0 0 clamp(6px,1.4vw,14px);
  display:flex; flex-wrap:wrap; align-items:flex-end;
}
.hero__title .ch{
  display:inline-block; opacity:0; transform:translateY(26px) rotate(2deg);
  filter:blur(7px);
  animation:chIn .9s var(--ease-brush) forwards;
  animation-delay:calc(.25s + var(--i)*.13s);
}
@keyframes chIn{ 60%{ filter:blur(0); } to{ opacity:1; transform:none; filter:blur(0); } }
.hero__seal{ margin:0 0 clamp(14px,2vw,22px) 18px; opacity:0; animation:sealIn .5s var(--ease-brush) 1.1s forwards; }
@keyframes sealIn{ from{ opacity:0; transform:rotate(-2.5deg) scale(1.6); } to{ opacity:1; transform:rotate(-2.5deg) scale(1); } }
.hero__tag{
  font-family:var(--f-brush); font-size:clamp(20px,3.4vw,30px);
  color:var(--ink-2); letter-spacing:.14em; margin-bottom:12px;
}
.hero__desc{ max-width:33em; color:var(--ink-3); font-size:clamp(14.5px,1.8vw,16.5px); }
.hero__cta{ margin-top:clamp(22px,4vw,36px); }
.hero__boat{
  position:absolute; z-index:1; right:max(-60px,-4vw); bottom:16vh;
  width:clamp(200px,30vw,430px); opacity:.94;
  animation:rock 7.5s ease-in-out infinite;
  transform-origin:50% 88%;
  pointer-events:none;
}
@keyframes rock{
  0%,100%{ transform:rotate(-1.6deg) translateY(0); }
  50%{ transform:rotate(1.8deg) translateY(-7px); }
}
@media(max-width:880px){
  .hero__boat{ right:-8vw; bottom:20vh; opacity:.55; }
}
.hero__cue{
  position:absolute; left:50%; bottom:22px; transform:translateX(-50%); z-index:3;
  display:flex; flex-direction:column; align-items:center; gap:8px;
  color:var(--ink-4); font-family:var(--f-kai); font-size:12px; letter-spacing:.4em; text-indent:.4em;
  text-decoration:none;
}
.hero__cue i{
  width:1px; height:44px; background:linear-gradient(var(--ink-4), transparent);
  display:block; position:relative; overflow:hidden;
}
.hero__cue i::after{
  content:""; position:absolute; left:0; top:-40%; width:100%; height:40%;
  background:var(--seal); animation:cueDrop 2.2s ease-in-out infinite;
}
@keyframes cueDrop{ 0%{ top:-40%; } 70%,100%{ top:110%; } }

/* 首页数字带 */
.statband{ border-top:1px solid var(--line); border-bottom:1px solid var(--line); background:var(--paper-2); }
.statband .g4{ padding:clamp(22px,4vw,38px) 0; }
.stat{ text-align:center; padding:6px 8px; }
.stat b{
  display:block; font-family:var(--f-brush); font-weight:400;
  font-size:clamp(30px,4.6vw,46px); line-height:1.15; letter-spacing:.02em;
}
.stat b em{ font-style:normal; font-size:.52em; color:var(--ink-3); margin-left:2px; }
.stat span{ font-size:13px; color:var(--ink-3); letter-spacing:.2em; }

/* ---------- 9. 揭示动画 ---------- */
.rv{ opacity:0; transform:translateY(22px); }
.rv.is-in{
  opacity:1; transform:none;
  transition:opacity .8s ease, transform .8s var(--ease-brush);
  transition-delay:var(--d,0s);
}
/* 墨渍显影 */
.rv-ink{ opacity:0; }
.rv-ink.is-in{
  opacity:1;
  -webkit-mask-image:radial-gradient(circle at 50% 50%, #000 99%, transparent 100%);
  mask-image:radial-gradient(circle at 50% 50%, #000 99%, transparent 100%);
  -webkit-mask-size:0 0; mask-size:0 0;
  -webkit-mask-repeat:no-repeat; mask-repeat:no-repeat;
  animation:inkSoak 1s var(--ease-brush) forwards; animation-delay:var(--d,0s);
}
@keyframes inkSoak{ from{ -webkit-mask-size:0 0; mask-size:0 0; } to{ -webkit-mask-size:300% 300%; mask-size:300% 300%; } }
@media(prefers-reduced-motion:reduce){
  .rv,.rv-ink{ opacity:1 !important; transform:none !important; animation:none !important; -webkit-mask-image:none !important; mask-image:none !important; }
  .hero__title .ch{ opacity:1; transform:none; filter:none; animation:none; }
  .hero__seal{ opacity:1; animation:none; }
  .hero__boat{ animation:none; }
  html{ scroll-behavior:auto; }
}

/* ---------- 10. 图文排 ---------- */
.split{ display:grid; gap:clamp(24px,4vw,52px); align-items:center; }
@media(min-width:880px){ .split{ grid-template-columns:1.05fr .95fr; } .split--rev > :first-child{ order:2; } }
.fig{ position:relative; }
.fig svg{ width:100%; height:auto; display:block; }
.figcap{
  text-align:center; font-family:var(--f-kai); font-size:13px; color:var(--ink-4);
  letter-spacing:.3em; margin-top:10px;
}
.figcap b{ color:var(--ink-3); font-weight:400; }

/* 名称由来 */
.origin{ position:relative; }
.origin__row{ display:flex; gap:18px; align-items:flex-start; padding:18px 0; border-bottom:1px dashed var(--line); }
.origin__row:last-child{ border-bottom:0; }
.origin__zi{
  font-family:var(--f-brush); font-size:44px; line-height:1; color:var(--ink);
  min-width:1.2em; text-align:center;
}
.origin__zi small{ display:block; font-family:var(--f-kai); font-size:12px; color:var(--seal); letter-spacing:.3em; margin-top:6px; }
.origin__row h4{ font-size:17px; margin-bottom:4px; letter-spacing:.06em; }
.origin__row p{ margin:0; color:var(--ink-3); font-size:15px; }

/* ---------- 11. 清单 ---------- */
.list-ink{ list-style:none; padding:0; margin:0; }
.list-ink li{
  position:relative; padding:7px 0 7px 26px; color:var(--ink-2);
  border-bottom:1px dashed var(--line);
}
.list-ink li:last-child{ border-bottom:0; }
.list-ink li::before{
  content:""; position:absolute; left:4px; top:1.05em;
  width:9px; height:9px; border-radius:46% 54% 50% 50%/55% 45% 55% 45%;
  background:var(--ink-3); opacity:.75;
}
.list-ink li b{ font-weight:600; color:var(--ink); }
.list-seal li::before{ background:var(--seal); }

/* ---------- 12. 表 ---------- */
.table-wrap{ overflow-x:auto; -webkit-overflow-scrolling:touch; border:1px solid var(--line); border-radius:4px; background:rgba(255,255,255,.3); }
table.tbl{ width:100%; border-collapse:collapse; font-size:15px; min-width:560px; }
.tbl th{
  font-family:var(--f-brush); font-weight:400; font-size:17px; letter-spacing:.1em;
  background:var(--paper-3); color:var(--ink);
  padding:12px 16px; text-align:left; border-bottom:1px solid var(--line-strong);
  white-space:nowrap;
}
.tbl td{ padding:11px 16px; border-bottom:1px solid var(--line); vertical-align:top; color:var(--ink-2); }
.tbl tr:last-child td{ border-bottom:0; }
.tbl tr:hover td{ background:rgba(33,30,26,.03); }
.tbl .hl td{ background:rgba(162,60,42,.06); }
.tbl .hl td:first-child{ box-shadow:inset 3px 0 0 var(--seal); }
.tbl td:first-child{ white-space:nowrap; }
@media(max-width:640px){
  .tbl{ min-width:0; }
  .tbl thead{ display:none; }
  .tbl, .tbl tbody, .tbl tr, .tbl td{ display:block; }
  .tbl tr{ padding:10px 14px; border-bottom:1px dashed var(--line); }
  .tbl tr:last-child{ border-bottom:0; }
  .tbl td{ border:0; padding:4px 0; white-space:normal; }
  .tbl td::before{
    content:attr(data-th); display:inline-block;
    font-family:var(--f-kai); font-size:12.5px; color:var(--seal); letter-spacing:.2em;
    margin-right:10px; min-width:5.2em;
  }
  .tbl td:first-child{ font-weight:600; color:var(--ink); font-size:16px; padding-top:6px; }
  .tbl td:first-child::before{ display:none; }
}

/* ---------- 13. 流程对比（订单实例） ---------- */
.flowtoggle{ display:inline-flex; border:1.5px solid var(--ink); border-radius:3px; overflow:hidden; }
.flowtoggle button{
  font-family:var(--f-brush); font-size:17px; letter-spacing:.2em; text-indent:.2em;
  padding:9px 22px 11px; border:0; background:transparent; color:var(--ink-3); cursor:pointer;
  transition:background .2s, color .2s;
}
.flowtoggle button.is-on{ background:var(--ink); color:var(--paper); }
.flowtoggle button.is-on.is-after{ background:var(--seal); }

.flow{ margin-top:26px; }
.flow__row{ display:flex; align-items:stretch; gap:0; overflow-x:auto; padding-bottom:8px; }
.flow__node{
  flex:1 0 132px; text-align:center; padding:16px 10px 14px;
  border:1px solid var(--line-strong); border-radius:4px; background:rgba(255,255,255,.4);
  position:relative;
}
.flow__node b{ display:block; font-family:var(--f-brush); font-weight:400; font-size:19px; letter-spacing:.1em; margin-bottom:4px; }
.flow__node span{ font-size:12.5px; color:var(--ink-3); line-height:1.6; display:block; }
.flow__node small{ display:inline-block; margin-top:7px; font-size:11.5px; letter-spacing:.16em; color:var(--ink-4); border:1px solid var(--line); padding:1px 8px 2px; border-radius:2px; }
.flow__arr{
  flex:0 0 34px; display:flex; align-items:center; justify-content:center;
  color:var(--ink-4); font-size:18px; position:relative;
}
.flow__arr::before{ content:""; position:absolute; left:4px; right:4px; top:50%; border-top:1.6px dashed var(--ink-4); }
.flow__arr i{ background:var(--paper); padding:0 2px; z-index:1; font-style:normal; }
@media(max-width:720px){
  .flow__row{ flex-direction:column; overflow:visible; }
  .flow__node{ flex:auto; }
  .flow__arr{ flex:0 0 30px; }
  .flow__arr::before{ left:50%; top:4px; bottom:4px; right:auto; border-top:0; border-left:1.6px dashed var(--ink-4); }
}
.flow.is-after .flow__node{ border-color:var(--seal); background:rgba(162,60,42,.045); }
.flow.is-after .flow__node small{ color:var(--seal); border-color:rgba(162,60,42,.4); }
.flow.is-after .flow__arr{ color:var(--seal); }
.flow.is-after .flow__arr::before{ border-top-color:var(--seal-l); border-left-color:var(--seal-l); border-top-style:solid; }
@media(max-width:720px){ .flow.is-after .flow__arr::before{ border-top-style:none; border-left-style:solid; } }

/* ---------- 14. 四层架构 ---------- */
.arch{ display:flex; flex-direction:column; gap:12px; }
.arch__l{
  border:1.5px solid var(--ink-2); border-radius:4px; padding:16px 20px;
  background:rgba(255,255,255,.35);
  display:grid; grid-template-columns:auto 1fr; gap:6px 20px; align-items:baseline;
  transition:transform .22s var(--ease-brush), box-shadow .22s, border-color .22s, background .22s;
  position:relative; cursor:default;
}
.arch__l:hover{ transform:translateX(6px); border-color:var(--ink); box-shadow:var(--shadow-ink); }
.arch__l:nth-child(1){ background:rgba(33,30,26,.05); }
.arch__no{ font-family:var(--f-kai); color:var(--seal); font-size:14px; letter-spacing:.1em; }
.arch__t{ font-family:var(--f-brush); font-size:21px; letter-spacing:.08em; }
.arch__t small{ font-family:var(--f-kai); font-size:13px; color:var(--ink-3); margin-left:8px; letter-spacing:.14em; }
.arch__d{ grid-column:2; color:var(--ink-3); font-size:14.5px; margin:0; }
.arch__flow{
  align-self:center; color:var(--ink-4); font-size:16px; line-height:1;
  display:flex; flex-direction:column; align-items:center; margin:-4px 0;
}

/* ---------- 15. 三级路径 / 步骤 ---------- */
.path3{ display:grid; gap:16px; counter-reset:step; }
@media(min-width:880px){ .path3{ grid-template-columns:repeat(3,1fr); } }
.step{
  border:1px solid var(--line); border-radius:4px; padding:22px 22px 18px;
  background:linear-gradient(180deg, rgba(255,255,255,.4), transparent 55%);
  position:relative;
}
.step__no{
  font-family:var(--f-brush); font-size:52px; line-height:1; color:var(--paper-3);
  position:absolute; right:14px; top:6px;
  -webkit-text-stroke:1.5px var(--ink-4); text-stroke:1.5px var(--ink-4);
  opacity:.85;
}
.step h4{ font-family:var(--f-brush); font-size:22px; letter-spacing:.08em; position:relative; }
.step h4 .badge{ position:absolute; right:0; top:4px; }
.step p{ color:var(--ink-3); font-size:14.5px; margin:0 0 10px; }

/* 陪跑五步 */
.steps5{ display:grid; gap:0; grid-template-columns:1fr; counter-reset:p5; }
@media(min-width:880px){ .steps5{ grid-template-columns:repeat(5,1fr); } }
.steps5 .st{ padding:18px 18px 16px; border-left:2px dashed var(--line-strong); position:relative; }
.steps5 .st::before{
  counter-increment:p5; content:counter(p5, cjk-ideographic);
  font-family:var(--f-brush); font-size:30px; color:var(--seal);
  display:block; line-height:1; margin-bottom:8px;
}
.steps5 .st::after{
  content:""; position:absolute; left:-7px; top:24px;
  width:12px; height:12px; border-radius:50%; background:var(--paper);
  border:2px solid var(--seal);
}
@media(min-width:880px){
  .steps5 .st{ border-left:0; border-top:2px dashed var(--line-strong); padding:26px 16px 14px; }
  .steps5 .st::after{ left:18px; top:-7px; }
}
.steps5 .st b{ display:block; font-family:var(--f-brush); font-weight:400; font-size:19px; letter-spacing:.1em; margin-bottom:4px; }
.steps5 .st span{ font-size:13.5px; color:var(--ink-3); line-height:1.7; display:block; }

/* ---------- 16. 一人公司 / AI 岗 ---------- */
.roles{ display:grid; grid-template-columns:repeat(2,1fr); gap:12px; }
@media(min-width:640px){ .roles{ grid-template-columns:repeat(4,1fr); } }
.role{
  border:1px solid var(--line); border-radius:4px; padding:14px 12px 12px;
  text-align:center; background:rgba(255,255,255,.35);
  transition:transform .2s var(--ease-brush), border-color .2s, background .2s;
}
.role:hover{ transform:translateY(-3px); border-color:var(--seal); background:rgba(162,60,42,.05); }
.role b{ display:block; font-family:var(--f-brush); font-weight:400; font-size:21px; letter-spacing:.12em; margin-bottom:2px; }
.role span{ font-size:12px; color:var(--ink-3); line-height:1.55; display:block; min-height:2.6em; }

.ai16{ display:grid; grid-template-columns:repeat(4,1fr); gap:10px; }
@media(min-width:640px){ .ai16{ grid-template-columns:repeat(8,1fr); } }
.ai16 .p{
  aspect-ratio:1; border:1.5px solid var(--ink-3); border-radius:8px 3px 9px 4px;
  display:flex; align-items:center; justify-content:center;
  font-family:var(--f-brush); font-size:clamp(17px,2.4vw,22px); letter-spacing:.08em;
  color:var(--ink-2); transform:rotate(-1deg);
  transition:all .22s var(--ease-brush); cursor:default;
  background:rgba(255,255,255,.25);
}
.ai16 .p:nth-child(even){ transform:rotate(1.2deg); }
.ai16 .p:hover{ background:var(--seal); border-color:var(--seal); color:#f6efdd; transform:rotate(0) scale(1.06); }
.section--dark .ai16 .p{ background:transparent; border-color:rgba(236,229,210,.5); color:var(--dark-p); }
.section--dark .ai16 .p:hover{ background:var(--seal); border-color:var(--seal); color:#f6efdd; }

/* ---------- 17. 里程碑 ---------- */
.miles{ display:grid; gap:0; position:relative; margin-top:10px; }
@media(min-width:880px){ .miles{ grid-template-columns:repeat(3,1fr); gap:26px; } }
.mile{ position:relative; padding:26px 0 26px 34px; }
@media(min-width:880px){ .mile{ padding:34px 26px 10px; } }
.mile::before{ /* 竖轴（移动） */
  content:""; position:absolute; left:8px; top:6px; bottom:6px; width:2px;
  background:linear-gradient(var(--seal), rgba(236,229,210,.2));
}
@media(min-width:880px){
  .mile::before{ left:0; right:0; top:8px; bottom:auto; width:auto; height:2px;
    background:linear-gradient(90deg, var(--seal), rgba(236,229,210,.18)); }
}
.mile::after{
  content:""; position:absolute; left:2px; top:34px; width:14px; height:14px; border-radius:50%;
  background:var(--dark); border:2.5px solid var(--seal);
}
@media(min-width:880px){ .mile::after{ left:2px; top:2px; } }
.mile__n{
  font-family:var(--f-brush); font-size:clamp(44px,6vw,64px); line-height:1; color:var(--dark-p);
}
.mile__n em{ font-style:normal; font-size:.4em; color:var(--seal-l); margin-left:4px; }
.mile h4{ font-size:16.5px; color:var(--dark-p); margin:8px 0 4px; letter-spacing:.06em; }
.mile h4::before{ content:"◈ "; color:var(--seal-l); font-size:.8em; }
.mile p{ color:var(--dark-p3); font-size:14px; margin:0; }
.mile .promise{
  display:inline-block; margin-top:10px; font-size:12px; letter-spacing:.18em;
  color:var(--seal-l); border:1px solid rgba(192,90,68,.45); border-radius:2px; padding:2px 9px 3px;
}

/* ---------- 18. 增长闭环 ---------- */
.ring-wrap{ max-width:520px; margin:0 auto; }
.ring-wrap svg{ width:100%; height:auto; }

/* ---------- 19. 对比 ---------- */
.compare{ display:grid; gap:16px; }
@media(min-width:880px){ .compare{ grid-template-columns:repeat(3,1fr); } }
.compare .cmp{ border:1px solid var(--line); border-radius:4px; padding:22px; background:rgba(255,255,255,.32); }
.compare .cmp h4{ font-family:var(--f-brush); font-size:21px; letter-spacing:.08em; }
.compare .cmp .from{ font-size:13.5px; color:var(--ink-3); margin:0 0 12px; padding-bottom:10px; border-bottom:1px dashed var(--line); }
.compare .cmp .diff{ font-size:14.5px; color:var(--ink-2); margin:0; }
.compare .cmp .diff::before{ content:"较之 "; color:var(--seal); font-family:var(--f-kai); }
.triple{
  margin-top:26px; border:1.5px solid var(--ink); border-radius:4px; padding:18px 22px;
  display:flex; flex-wrap:wrap; gap:10px 26px; align-items:center; justify-content:center;
  background:linear-gradient(180deg, rgba(255,255,255,.4), transparent);
}
.triple b{ font-family:var(--f-brush); font-weight:400; font-size:20px; letter-spacing:.1em; }
.triple span{ color:var(--seal); font-size:18px; }

/* ---------- 20. 团队 ---------- */
.team{ display:grid; gap:18px; }
@media(min-width:880px){ .team{ grid-template-columns:repeat(2,1fr); } .team .t-wide{ grid-column:1/-1; } }
.tcard{
  display:flex; gap:20px; border:1px solid var(--line); border-radius:4px; padding:24px;
  background:linear-gradient(175deg, rgba(255,255,255,.42), transparent 50%);
  transition:transform .25s var(--ease-brush), box-shadow .25s;
}
.tcard:hover{ transform:translateY(-4px); box-shadow:var(--shadow-ink); }
.tcard__ava{
  flex:0 0 84px; width:84px; height:84px; border-radius:14px 6px 16px 7px;
  background:var(--ink); color:var(--paper);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--f-brush); font-size:44px; transform:rotate(-2deg);
  box-shadow:inset 0 0 0 2px rgba(243,238,225,.18), inset 0 0 18px rgba(0,0,0,.35);
}
.tcard__ava--anon{ background:var(--paper-3); color:var(--ink-3); box-shadow:inset 0 0 0 1.5px var(--line-strong); }
.tcard h3{ font-size:24px; margin-bottom:2px; letter-spacing:.1em; }
.tcard h3 .role-tag{ font-family:var(--f-kai); font-size:13px; color:var(--seal); letter-spacing:.2em; margin-left:10px; border:1px solid rgba(162,60,42,.4); padding:2px 8px 3px; border-radius:2px; vertical-align:3px; }
.tcard .edu{ font-size:13px; color:var(--ink-4); letter-spacing:.05em; margin-bottom:8px; }
.tcard p{ font-size:14.5px; color:var(--ink-2); margin:0; }

/* ---------- 21. 资费卷轴 ---------- */
.price{
  max-width:560px; margin:0 auto; position:relative;
  border:1.5px solid var(--ink); border-radius:6px;
  background:linear-gradient(180deg, rgba(255,255,255,.5), rgba(255,255,255,0) 40%), var(--paper-2);
  padding:clamp(28px,5vw,44px);
  box-shadow:var(--shadow-ink);
}
.price::before,.price::after{
  content:""; position:absolute; left:24px; right:24px; height:3px;
  background:var(--ink); opacity:.85; border-radius:2px;
}
.price::before{ top:8px; } .price::after{ bottom:8px; }
.price__name{ text-align:center; font-family:var(--f-kai); font-size:14px; letter-spacing:.5em; color:var(--ink-3); }
.price__fee{ text-align:center; margin:10px 0 4px; }
.price__fee b{ font-family:var(--f-brush); font-weight:400; font-size:clamp(52px,9vw,72px); line-height:1; }
.price__fee em{ font-style:normal; font-family:var(--f-kai); color:var(--ink-3); font-size:15px; margin-left:6px; }
.price__api{ text-align:center; color:var(--seal); font-family:var(--f-kai); font-size:14px; letter-spacing:.16em; margin-bottom:20px; }
.price dl{ margin:0 0 22px; }
.price .r{ display:flex; justify-content:space-between; gap:14px; padding:9px 2px; border-bottom:1px dashed var(--line); font-size:14.5px; }
.price .r:last-child{ border-bottom:0; }
.price dt{ color:var(--ink-3); white-space:nowrap; }
.price dd{ margin:0; text-align:right; color:var(--ink); }
.price .btn{ width:100%; }

/* 服务四类 */
.benefit{ border:1px solid var(--line); border-radius:4px; padding:24px; background:rgba(255,255,255,.32); height:100%; }
.benefit h3{ display:flex; align-items:center; gap:12px; font-size:22px; }
.benefit h3 .ico{ width:30px; height:30px; color:var(--seal); flex:none; }
.benefit p.b-lead{ font-size:14px; color:var(--ink-3); margin-bottom:12px; }
.benefit .list-ink li{ font-size:14.5px; padding:6px 0 6px 24px; }

/* ---------- 22. 手风琴 / 疑问 ---------- */
.acc{ border-top:1px solid var(--line-strong); }
.acc__i{ border-bottom:1px solid var(--line); }
.acc__q{
  width:100%; text-align:left; background:none; border:0; cursor:pointer;
  display:flex; align-items:center; gap:14px;
  padding:18px 6px; font-family:var(--f-body); font-size:16.5px; color:var(--ink);
}
.acc__q .no{ font-family:var(--f-kai); color:var(--seal); font-size:14px; letter-spacing:.1em; flex:none; }
.acc__q .mk{
  margin-left:auto; flex:none; width:22px; height:22px; position:relative; opacity:.65;
}
.acc__q .mk::before,.acc__q .mk::after{
  content:""; position:absolute; background:var(--ink-2); border-radius:1px;
  transition:transform .3s var(--ease-brush);
}
.acc__q .mk::before{ left:2px; right:2px; top:10px; height:2px; }
.acc__q .mk::after{ top:2px; bottom:2px; left:10px; width:2px; }
.acc__i.is-open .acc__q .mk::after{ transform:scaleY(0); }
.acc__a{ overflow:hidden; max-height:0; transition:max-height .4s var(--ease-brush); }
.acc__a-in{ padding:2px 6px 20px 40px; color:var(--ink-2); font-size:15px; }
.acc__a-in p:last-child{ margin-bottom:0; }

/* ---------- 23. 演算器 ---------- */
.calc{
  border:1.5px solid var(--ink); border-radius:6px; overflow:hidden;
  background:linear-gradient(180deg, rgba(255,255,255,.45), transparent 50%);
  display:grid;
}
@media(min-width:880px){ .calc{ grid-template-columns:1.1fr .9fr; } }
.calc__in{ padding:clamp(22px,3.5vw,34px); border-bottom:1px dashed var(--line-strong); }
@media(min-width:880px){ .calc__in{ border-bottom:0; border-right:1px dashed var(--line-strong); } }
.calc__row{ margin-bottom:22px; }
.calc__row:last-child{ margin-bottom:0; }
.calc__row label{
  display:flex; justify-content:space-between; align-items:baseline;
  font-size:14.5px; color:var(--ink-2); margin-bottom:8px;
}
.calc__row label output{ font-family:var(--f-brush); font-size:24px; color:var(--seal); }
input[type=range]{
  -webkit-appearance:none; appearance:none; width:100%; height:26px; background:none; cursor:pointer;
}
input[type=range]::-webkit-slider-runnable-track{
  height:3px; background:linear-gradient(90deg, var(--ink-2), var(--ink-4)); border-radius:2px;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none; width:20px; height:20px; margin-top:-8.5px;
  background:var(--seal); border:2px solid var(--paper);
  border-radius:46% 54% 52% 48%/55% 45% 55% 45%;
  box-shadow:0 2px 8px rgba(130,45,30,.5);
}
input[type=range]::-moz-range-track{ height:3px; background:var(--ink-4); border-radius:2px; }
input[type=range]::-moz-range-thumb{
  width:18px; height:18px; background:var(--seal); border:2px solid var(--paper); border-radius:50%;
}
.calc__out{ padding:clamp(22px,3.5vw,34px); background:var(--ink); color:var(--paper); position:relative; }
.calc__out::before{
  content:"演"; position:absolute; right:14px; bottom:6px;
  font-family:var(--f-brush); font-size:110px; line-height:1; color:rgba(236,229,210,.06);
}
.calc__out .o{ margin-bottom:18px; }
.calc__out .o:last-child{ margin-bottom:0; }
.calc__out .o small{ display:block; font-size:12.5px; letter-spacing:.24em; color:var(--dark-p3); margin-bottom:2px; }
.calc__out .o b{ font-family:var(--f-brush); font-weight:400; font-size:clamp(30px,4vw,40px); line-height:1.2; }
.calc__out .o b em{ font-style:normal; font-size:.45em; color:var(--dark-p3); }
.calc__out .hint{ font-size:12px; color:var(--dark-p3); border-top:1px dashed var(--line-dark); padding-top:12px; margin-top:16px; }

/* ---------- 24. 表单 ---------- */
.form{ max-width:640px; margin:0 auto; }
.f-row{ margin-bottom:20px; }
.f-row label{ display:block; font-size:14px; color:var(--ink-2); letter-spacing:.1em; margin-bottom:8px; }
.f-row label .req{ color:var(--seal); margin-left:4px; }
.f-row input,.f-row textarea,.f-row select{
  width:100%; font-family:var(--f-body); font-size:16px; color:var(--ink);
  background:rgba(255,255,255,.5); border:1px solid var(--line-strong); border-radius:3px;
  padding:12px 14px; outline:none;
  transition:border-color .2s, box-shadow .2s;
}
.f-row input:focus,.f-row textarea:focus,.f-row select:focus{
  border-color:var(--seal); box-shadow:0 0 0 3px rgba(162,60,42,.12);
}
.f-row textarea{ min-height:110px; resize:vertical; }
.form .btn{ width:100%; }
.f-done{ text-align:center; padding:30px 10px; }
.f-done .seal{ margin-bottom:18px; }
.f-done h3{ font-family:var(--f-brush); font-size:28px; letter-spacing:.1em; }
.f-done p{ color:var(--ink-3); font-size:14.5px; }
.f-done .no{ font-family:var(--f-kai); letter-spacing:.2em; color:var(--seal); font-size:18px; margin:8px 0 2px; }

/* toast */
.toast{
  position:fixed; left:50%; bottom:30px; transform:translate(-50%, 80px);
  background:var(--ink); color:var(--paper);
  font-size:14px; letter-spacing:.08em; padding:11px 22px; border-radius:3px;
  box-shadow:var(--shadow-ink); z-index:200; opacity:0;
  transition:transform .35s var(--ease-brush), opacity .35s;
  pointer-events:none; max-width:88vw; text-align:center;
}
.toast.is-on{ transform:translate(-50%,0); opacity:1; }

/* ---------- 25. 章节引言块 ---------- */
.quote{
  position:relative; padding:clamp(22px,4vw,36px) clamp(24px,4vw,44px);
  border:1px solid var(--line); border-radius:4px;
  background:linear-gradient(120deg, rgba(255,255,255,.4), transparent 60%);
}
.quote::before{
  content:"「"; position:absolute; left:10px; top:2px;
  font-family:var(--f-brush); font-size:44px; color:var(--seal); opacity:.5;
}
.quote p{ font-family:var(--f-kai); font-size:clamp(16px,2.2vw,19px); color:var(--ink-2); margin:0; }
.quote .who{ display:block; text-align:right; font-size:13px; color:var(--ink-4); letter-spacing:.2em; margin-top:10px; }

/* ---------- 26. 页脚 ---------- */
.ftr{ background:var(--dark); color:var(--dark-p3); position:relative; overflow:hidden; }
.ftr::before{
  content:""; position:absolute; inset:0; opacity:.5; pointer-events:none;
  background:radial-gradient(70% 90% at 80% 0%, rgba(236,229,210,.05), transparent 60%);
}
.ftr__in{
  max-width:var(--wrap); margin:0 auto; padding:clamp(46px,7vw,72px) var(--pad) 30px;
  position:relative;
  display:grid; gap:34px;
}
@media(min-width:880px){ .ftr__in{ grid-template-columns:1.2fr .6fr .6fr 1fr; } }
.ftr__brand img{ width:74px; margin-bottom:12px; opacity:.92; }
.ftr__brand .bt{ font-family:var(--f-brush); font-size:24px; color:var(--dark-p); letter-spacing:.12em; }
.ftr__brand p{ font-size:13.5px; margin-top:8px; max-width:26em; line-height:1.9; }
.ftr h5{
  font-family:var(--f-kai); font-weight:400; font-size:13px; letter-spacing:.4em;
  color:var(--dark-p); margin:0 0 14px; opacity:.75;
}
.ftr ul{ list-style:none; margin:0; padding:0; }
.ftr li{ margin-bottom:9px; }
.ftr a{ text-decoration:none; font-size:14px; color:var(--dark-p3); transition:color .2s; }
.ftr a:hover{ color:var(--dark-p); }
.ftr__law{ font-size:12.5px; line-height:2; border-left:2px solid rgba(192,90,68,.6); padding-left:14px; }
.ftr__bar{
  border-top:1px solid var(--line-dark); margin-top:10px; padding:18px 0 30px;
  display:flex; flex-wrap:wrap; gap:10px 24px; justify-content:space-between; align-items:center;
  font-size:12.5px; letter-spacing:.14em;
}
.ftr__bar .seal--sm{ transform:rotate(-3deg); }
.ftr__bar .r{ display:flex; align-items:center; gap:12px; }

/* ---------- 27. 水墨转场 ---------- */
.inkveil{
  position:fixed; inset:0; z-index:150; pointer-events:none;
  visibility:hidden;
}
.inkveil__plane{
  position:absolute; inset:-2% -6%;
  background:var(--paper-2);
  transform:translateX(-112%);
}
.inkveil__plane::before,.inkveil__plane::after{
  content:""; position:absolute; top:-2%; bottom:-2%; width:34vw;
  background-repeat:no-repeat; background-size:100% 100%;
}
.inkveil__plane::before{
  right:-31vw;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 300 1000' preserveAspectRatio='none'%3E%3Cpath d='M300 0 L300 1000 L120 1000 C190 880 130 800 200 700 C250 630 170 560 220 480 C260 420 190 350 230 280 C270 210 200 120 260 40 C280 15 295 5 300 0 Z' fill='%23181512'/%3E%3Ccircle cx='95' cy='120' r='14' fill='%23181512'/%3E%3Ccircle cx='60' cy='300' r='8' fill='%23181512'/%3E%3Ccircle cx='110' cy='520' r='11' fill='%23181512'/%3E%3Ccircle cx='70' cy='750' r='7' fill='%23181512'/%3E%3Ccircle cx='120' cy='900' r='9' fill='%23181512'/%3E%3C/svg%3E");
}
.inkveil__plane::after{
  left:-31vw; transform:scaleX(-1);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 300 1000' preserveAspectRatio='none'%3E%3Cpath d='M300 0 L300 1000 L120 1000 C190 880 130 800 200 700 C250 630 170 560 220 480 C260 420 190 350 230 280 C270 210 200 120 260 40 C280 15 295 5 300 0 Z' fill='%23181512'/%3E%3C/svg%3E");
}
.inkveil__mark{
  position:absolute; left:50%; top:50%; transform:translate(-50%,-50%);
  text-align:center; opacity:0; transition:opacity .2s;
}
.inkveil__mark img{ width:64px; opacity:.9; }
.inkveil__mark span{
  display:block; font-family:var(--f-brush); font-size:20px; letter-spacing:.5em; text-indent:.5em;
  color:var(--ink); margin-top:8px;
}
.inkveil.is-anim{ visibility:visible; }
.inkveil.is-cover .inkveil__plane{ transform:translateX(0); transition:transform .42s cubic-bezier(.6,.05,.3,1); }
.inkveil.is-cover .inkveil__mark{ opacity:1; transition-delay:.22s; }
.inkveil.no-trans .inkveil__plane,.inkveil.no-trans .inkveil__mark{ transition:none !important; }
.inkveil.is-reveal .inkveil__plane{ transform:translateX(112%); transition:transform .55s cubic-bezier(.7,.02,.25,1) .08s; }
.inkveil.is-reveal .inkveil__mark{ opacity:0; transition:opacity .18s; }

/* 滚动进度墨线 */
.inkbar{
  position:fixed; left:0; top:0; height:3px; width:100%; z-index:90;
  background:linear-gradient(90deg, var(--seal), var(--seal-l));
  transform-origin:0 50%; transform:scaleX(0); opacity:.85;
  pointer-events:none;
}

/* ---------- 28. 杂项 ---------- */
.wash{ /* 淡墨晕染 */
  position:absolute; pointer-events:none; z-index:0; border-radius:50%;
  background:radial-gradient(circle, rgba(33,30,26,.07), transparent 68%);
}
.divider-v{ width:1px; background:var(--line); }
.totop{
  position:fixed; right:18px; bottom:24px; z-index:80;
  width:46px; height:46px; border-radius:50% 46% 42% 46%;
  border:1.5px solid var(--line-strong); background:var(--paper);
  color:var(--ink-2); font-family:var(--f-brush); font-size:17px;
  cursor:pointer; opacity:0; transform:translateY(14px); pointer-events:none;
  transition:opacity .3s, transform .3s, background .2s, color .2s;
  box-shadow:0 8px 24px -12px rgba(33,30,26,.4);
}
.totop.is-on{ opacity:1; transform:none; pointer-events:auto; }
.totop:hover{ background:var(--ink); color:var(--paper); }

/* 移动端微调 */
@media(max-width:640px){
  .topbar{ font-size:12px; letter-spacing:.05em; padding:6px 36px 7px 12px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
  .hero__eyebrow{ letter-spacing:.22em; }
  .hero__boat{ opacity:.38; right:-16vw; bottom:23vh; }
  .brand__s{ letter-spacing:.22em; }
}

/* 控制台彩蛋排版 */
.console-boat{ color:var(--seal); }

@media print{
  .hdr,.topbar,.totop,.inkveil,.hero__canvas,.inkbar,.mmenu{ display:none !important; }
  body{ background:#fff; }
  .section{ padding:24px 0; }
}