/*
Theme Name: XUDOR 旭道
Theme URI: https://xudor.cn
Author: XUDOR DESIGN
Author URI: https://xudor.cn
Description: 旭道品牌设计单页主题。深色点阵草稿本质感、整屏翻页、案例轮播，内容可在「外观 → 自定义」与「案例」中维护。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.8
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: xudor
Tags: one-column, custom-colors, featured-images
*/

:root{
  --ink:#121214;
  --ink-2:#1c1c20;
  --ink-3:#242429;
  --paper:#f4f1ea;
  --gold:#b89b6a;
  --gold-dim:#8a7450;
  --muted:#928c82;
  --muted-dark:#6b665c;
  --line:rgba(255,255,255,.12);
  --line-dark:rgba(14,13,11,.12);
  --serif:"Noto Sans SC","Heiti SC","STHeiti","PingFang SC","Microsoft YaHei",sans-serif;
  --sans:"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  --pad:clamp(6rem,14vh,11rem);
}
*{margin:0;padding:0;box-sizing:border-box}
html{background:#121214}
body{
  font-family:var(--sans);
  color:var(--paper);
  background:linear-gradient(180deg, #121214 0%, #18181b 100%);
  line-height:1.85;
  font-size:1rem;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* ---------- 导航 ---------- */
.nav{
  --nav-pad:1.6rem;
  position:fixed;top:0;left:0;right:0;z-index:30;
  display:flex;justify-content:space-between;align-items:stretch;
  padding:var(--nav-pad) clamp(1.5rem,5vw,4rem);
  background:linear-gradient(to bottom, rgba(18,18,20,.92), rgba(18,18,20,0));
  transition:background .4s, padding .4s, border-color .4s;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav.scrolled{
  --nav-pad:1.1rem;
  background:rgba(18,18,20,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  padding:1.1rem clamp(1.5rem,5vw,4rem);
  border-bottom:1px solid rgba(255,255,255,.08);
}
body.admin-bar .nav{top:32px}
@media (max-width:782px){body.admin-bar .nav{top:46px}}
.nav .brand{
  font-family:"Heiti SC","STHeiti","Hiragino Sans GB","Microsoft YaHei","PingFang SC",sans-serif;
  font-size:1.05rem;font-weight:700;letter-spacing:.04em;
  display:flex;align-items:center;gap:0;
  cursor:pointer;
}
.nav ul{
  display:flex;align-items:stretch;gap:clamp(1.4rem,3.2vw,2.8rem);
  list-style:none;font-size:.75rem;letter-spacing:.18em;
  text-transform:uppercase;
}
.nav ul li{display:flex;align-items:stretch}
.nav a{cursor:pointer;position:relative;display:flex;align-items:center;transition:color .3s}
.nav a::after{
  content:"";position:absolute;left:0;bottom:calc(-1 * var(--nav-pad));width:0;height:1px;
  background:var(--gold);transition:width .4s ease;pointer-events:none;
}
.nav a:hover,.nav a[aria-current]{color:var(--gold)}
.nav a:hover::after,.nav a[aria-current]::after{width:100%}

/* ---------- 版心 ---------- */
.wrap{width:100%;max-width:1320px;margin:0 auto;padding:0 clamp(1.5rem,5vw,4rem)}

section{padding:var(--pad) 0;position:relative}
/* ---------- 首屏：点状草稿本 ---------- */
.hero{
  min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  position:relative;overflow:hidden;
  padding-top:5rem;
  background:
    radial-gradient(ellipse at 78% 18%, rgba(184,155,106,.14), transparent 55%),
    radial-gradient(ellipse at 10% 90%, rgba(184,155,106,.06), transparent 50%),
    linear-gradient(180deg, #121214, #161619);
}
.hero::before{
  content:"";
  position:absolute;inset:0;pointer-events:none;z-index:0;
  background-image:
    radial-gradient(circle at 0 0, rgba(255,255,255,.13) 1.1px, transparent 1.6px);
  background-size:26px 26px;
  mask-image:radial-gradient(ellipse at 42% 48%, #000 6%, transparent 62%);
  -webkit-mask-image:radial-gradient(ellipse at 42% 48%, #000 6%, transparent 62%);
}
.hero .hero-guides{
  position:absolute;inset:0;pointer-events:none;z-index:0;
  opacity:.085;
  background-image:
    linear-gradient(rgba(255,255,255,.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.35) 1px, transparent 1px);
  background-size:104px 104px, 104px 104px;
  mask-image:radial-gradient(ellipse at 50% 48%, #000 8%, transparent 64%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 48%, #000 8%, transparent 64%);
}
.hero-sketches{
  position:absolute;
  top:50%;right:clamp(1rem,3.5vw,4.5rem);
  transform:translateY(-50%);
  width:min(42vw,440px);height:auto;
  color:var(--gold);opacity:.16;
  pointer-events:none;z-index:0;
}
.hero-sketches svg{width:100%;height:auto;display:block;overflow:visible}
.hero-sketches .sk-arc{
  stroke-dasharray:100;stroke-dashoffset:100;
  animation:skDraw 2.8s .4s cubic-bezier(.4,0,.2,1) forwards;
}
.hero-sketches .sk-draw{
  stroke-dasharray:100;stroke-dashoffset:100;
  animation:skDraw 2.2s .15s ease-out forwards;
}
@keyframes skDraw{to{stroke-dashoffset:0}}

.hero .wrap{position:relative;z-index:1;width:100%}
.eyebrow{
  font-size:.6875rem;letter-spacing:.42em;text-transform:uppercase;
  color:var(--gold);margin-bottom:1.1rem;
  display:flex;align-items:center;gap:1rem;
}
.eyebrow::before{content:"";width:44px;height:1px;background:var(--gold)}
.hero h1{
  font-family:"Heiti SC","STHeiti","Hiragino Sans GB","Microsoft YaHei","PingFang SC",sans-serif;
  font-size:clamp(1.78rem,4vw,3.05rem);
  font-weight:700;font-synthesis:none;
  letter-spacing:.02em;line-height:1.4;
  margin-bottom:calc(2.6rem + 10px);
}
.hero h1 em{
  font-style:normal;font-weight:700;color:var(--gold);
  display:inline-block;
}
.hero .lede{
  font-size:clamp(.8125rem,1.15vw,.95rem);
  font-weight:300;
  color:rgba(244,241,234,.42);
  max-width:32em;letter-spacing:.02em;line-height:2;
}
.hero .scroll-cue{
  position:absolute;bottom:2.6rem;left:50%;transform:translateX(-50%);
  font-size:.625rem;letter-spacing:.44em;text-transform:uppercase;
  color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:.9rem;
  z-index:2;
  transition:opacity .4s ease;
}
.hero .scroll-cue::after{
  content:"";width:1px;height:52px;
  background:linear-gradient(to bottom, var(--gold), transparent);
  animation:floatBar 3.4s ease-in-out infinite;
}
@keyframes floatBar{
  0%,100%{transform:scaleY(1) translateY(0);opacity:.85}
  50%{transform:scaleY(1.06) translateY(-6px);opacity:1}
}

/* ---------- 标题系统 ---------- */
.section-head{margin-bottom:clamp(2rem,3.6vw,3rem)}
.section-head .num{
  font-size:.6875rem;letter-spacing:.44em;color:var(--gold);
  text-transform:uppercase;margin-bottom:1.5rem;
  display:flex;align-items:center;gap:1.1rem;
}
.section-head .num::before{content:"";width:48px;height:1px;background:var(--gold);flex:none}
.section-head h2{
  font-family:var(--serif);
  font-size:clamp(1.75rem,3.2vw,2.5rem);
  font-weight:700;letter-spacing:.02em;line-height:1.32;
}
.section-head p{
  margin-top:1.65rem;color:var(--muted);max-width:60em;
  font-size:.8125rem;letter-spacing:.04em;line-height:2.1;
}
 
/* ---------- 首页主案例 ---------- */
.feature{display:grid;grid-template-columns:1fr;gap:0}
.feature-media{
  position:relative;background:#1c1c20;overflow:hidden;
  border:1px solid var(--line);
}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s ease}
.feature-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top, rgba(18,18,20,.55), transparent 55%);
}
.feature-caption{
  position:absolute;right:clamp(1.2rem,4vw,2.6rem);bottom:clamp(1.2rem,4vw,2.4rem);
  z-index:2;display:flex;flex-direction:column;align-items:flex-end;gap:.7rem;
  text-align:right;
}
.feature-tag{
  position:absolute;left:clamp(1.2rem,4vw,2.6rem);bottom:clamp(1.2rem,4vw,2.4rem);
  z-index:2;
}
.feature-tag .tag{
  font-size:.6875rem;letter-spacing:.3em;text-transform:uppercase;
  color:var(--gold);border:1px solid var(--gold-dim);padding:.35rem .9rem;
}
.feature-caption .title{
  font-family:var(--serif);font-size:clamp(1.3rem,2.3vw,1.95rem);font-weight:700;letter-spacing:.04em;line-height:1.3;
}
.feature-caption .sub{
  font-family:var(--serif);font-size:clamp(.8125rem,1.1vw,.95rem);
  font-weight:400;letter-spacing:.14em;color:rgba(244,241,234,.42);
}
.feature-bars{
  display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(1rem,2.6vw,2.2rem);
  margin-top:1.5rem;
}
.feature-bars .bar{
  display:block;height:1px;background:rgba(255,255,255,.12);overflow:hidden;
}
.feature-bars .bar i{display:block;height:100%;width:0;background:rgba(255,255,255,.34)}

/* ---------- 相信 ---------- */
.belief-list{
  display:flex;flex-direction:column;justify-content:space-between;
  flex:1;gap:0;border-top:1px solid var(--line-dark);
}
.belief-list .row{
  display:grid;grid-template-columns:auto 1fr;gap:.05rem;
  padding:clamp(1.7rem,3.6vw,2.6rem) 0;
  border-bottom:1px solid var(--line-dark);
  align-items:baseline;
  transition:background .4s ease,padding-left .4s ease,opacity .95s cubic-bezier(.2,.7,.2,1),transform .95s cubic-bezier(.2,.7,.2,1);
}
.belief-list .idx{
  font-family:var(--serif);font-size:.75rem;letter-spacing:.12em;
  color:var(--gold-dim);transition:color .4s ease;
}
.belief-list p{font-family:var(--serif);font-size:clamp(.875rem,1.15vw,1rem);font-weight:400;line-height:2;letter-spacing:.04em;max-width:27em}

/* ---------- 关于 ---------- */
.about-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(3rem,6vw,6.5rem);align-items:stretch}
.about-col{display:flex;flex-direction:column;min-width:0}
.about-col .section-head{margin-bottom:2.4rem}
.about-lead{
  font-family:var(--serif);font-size:clamp(1.05rem,1.8vw,1.35rem);font-weight:500;
  line-height:1.75;letter-spacing:.03em;max-width:30em;margin-bottom:2rem;
}
.about-text p{color:rgba(244,241,234,.72);margin-bottom:1rem;max-width:34em;font-size:.8125rem;line-height:2.05}
.about-close{
  font-family:var(--serif);font-size:clamp(.95rem,1.35vw,1.1rem);font-weight:500;
  letter-spacing:.06em;color:var(--gold);line-height:1.8;margin-top:0;
}
.refuse-block{margin-top:3.4rem}
.refuse-block .num{
  font-size:.6875rem;letter-spacing:.44em;color:var(--gold);
  text-transform:uppercase;display:block;margin-top:.7rem;margin-bottom:.7rem;
}
.refuse-block h3{font-family:var(--serif);font-size:clamp(1.02rem,1.5vw,1.2rem);font-weight:700;letter-spacing:.04em}
.refuse{list-style:none;margin-top:1.2rem;border-top:1px solid var(--line)}
.refuse li{
  padding:1.05rem 0;border-bottom:1px solid var(--line);
  font-size:.8125rem;color:rgba(244,241,234,.68);
  display:flex;align-items:baseline;gap:1.2rem;letter-spacing:.03em;
}
.refuse li::before{content:"—";color:var(--gold);flex:none}

/* ---------- 联系 ---------- */
.contact-hero{
  font-family:var(--serif);font-size:clamp(1.5rem,3vw,2.35rem);font-weight:500;
  line-height:1.5;letter-spacing:.03em;max-width:22em;margin-bottom:3rem;
}
.contact-hero em{font-style:normal;color:var(--gold)}
.contact-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:clamp(2.5rem,4vw,3.5rem);border-top:1px solid var(--line);padding-top:3rem;
}
.contact-item .label{
  font-size:.6875rem;letter-spacing:.44em;text-transform:uppercase;
  color:var(--gold);display:block;margin-bottom:1.15rem;
}
.contact-item a,.contact-item span{
  font-size:clamp(1.02rem,1.5vw,1.18rem);letter-spacing:.04em;
  border-bottom:1px solid transparent;
  transition:border-color .35s,color .35s;
}
.contact-item a:hover{color:var(--gold);border-bottom-color:var(--gold)}
.qr{
  width:150px;aspect-ratio:1;background:var(--ink-2);
  border:1px solid var(--line);padding:10px;margin-top:.6rem;
}
.qr img{width:100%;height:100%;object-fit:cover;display:block}
.contact-note{margin-top:2rem;color:var(--muted);font-size:.9375rem;max-width:34em}

/* ---------- 页脚 ---------- */
footer{
  padding:clamp(1.3rem,2.4vh,1.9rem) 0;border-top:1px solid var(--line);
  font-size:.75rem;letter-spacing:.02em;color:var(--muted);
}
footer .wrap{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:1.2rem;
  font-family:var(--sans);
}
footer .footer-left{display:flex;flex-direction:column;gap:.4rem}
footer .footer-right{display:flex;flex-direction:column;align-items:flex-end;gap:.4rem;text-align:right}
footer a{border-bottom:1px solid transparent;transition:border-color .3s,color .3s}
footer a:hover{color:var(--gold);border-bottom-color:var(--gold)}
footer .icp{font-size:.7rem;letter-spacing:.02em;color:rgba(146,140,130,.7)}

/* ---------- 统一浮动动画 ---------- */
/* [FIX-11] will-change 不再常驻：只在动画即将开始时由 JS 加 .revealing，
   动画结束后移除。这里仅声明基础态。 */
.js .reveal{
  opacity:0;transform:translateY(52px);
  transition:opacity .95s cubic-bezier(.2,.7,.2,1), transform .95s cubic-bezier(.2,.7,.2,1);
}
.js .reveal.on{opacity:1;transform:none}
.js .reveal.reveal-up-once{opacity:0;transform:translateY(-52px)}
.js .reveal.reveal-up-once.on{opacity:1;transform:none}

.reveal.revealing{will-change:opacity,transform}

.hero .eyebrow.reveal.on{transition-delay:.05s}
.hero h1.reveal.on{transition-delay:.18s}
.hero .lede.reveal.on{transition-delay:.32s}

#work .section-head.reveal.on{transition-delay:.05s}
#work .case-showcase.reveal.on{transition-delay:.22s}

#about .section-head.reveal.on{transition-delay:.05s}
#about .belief-list > .row:nth-child(1).reveal.on{transition-delay:.12s}
#about .belief-list > .row:nth-child(2).reveal.on{transition-delay:.2s}
#about .belief-list > .row:nth-child(3).reveal.on{transition-delay:.28s}
#about .about-lead.reveal.on{transition-delay:.15s}
#about .about-text.reveal.on{transition-delay:.25s}
#about .about-close.reveal.on{transition-delay:.35s}
#about .refuse-block.reveal.on{transition-delay:.42s}

#contact .contact-hero.reveal.on{transition-delay:.08s}
#contact .contact-grid.reveal.on{transition-delay:.24s}
#contact p.reveal.on{transition-delay:.36s}

@media (prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none;transition:none;animation:none}
  .hero .scroll-cue::after{animation:none}
  .hero-sketches .sk-arc,.hero-sketches .sk-draw{animation:none;stroke-dashoffset:0}
}

/* ---------- 单页分区 ---------- */
.region{
  min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:center;align-items:center;
  padding:clamp(5rem,9vh,7rem) 0 clamp(1.75rem,3.5vh,2.75rem);
  position:relative;
}
.region-contact{justify-content:flex-start;padding-bottom:0}
.region-contact > .wrap{flex:1;display:flex;flex-direction:column;justify-content:center}
.region-contact footer{width:100%}

/* ---------- 区域深浅变化 ---------- */
#work{background:#0f0f11}
#about{background:#161619}
#contact{background:#121215}

/* ---------- 案例切换器 ---------- */
.case-tabs{
  display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:2rem;
  border-bottom:1px solid var(--line);
}
.case-tab{
  appearance:none;background:none;border:0;cursor:pointer;
  font-family:"Rajdhani","Noto Sans SC",var(--sans);font-weight:600;
  font-size:.8rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted);padding:1rem 1.35rem;position:relative;
  transition:color .35s ease;
}
.case-tab::after{
  content:"";position:absolute;left:1.35rem;right:1.35rem;
  bottom:-1px;height:1px;
  background:var(--gold);transform:scaleX(0);transform-origin:center;
  transition:transform .45s cubic-bezier(.2,.7,.2,1);
}
.case-tab.active{color:var(--gold)}
.case-tab.active::after{transform:scaleX(1)}
.case-nav{
  display:flex;justify-content:space-between;align-items:center;
  margin-top:2.2rem;gap:1rem;
}
.case-nav button{
  appearance:none;cursor:pointer;background:none;
  border:1px solid var(--line);color:var(--paper);
  font-family:"Rajdhani","Noto Sans SC",var(--sans);font-weight:600;
  font-size:.75rem;letter-spacing:.22em;text-transform:uppercase;
  padding:.85rem 1.7rem;border-radius:2px;
  display:inline-flex;align-items:center;justify-content:center;
  min-width:8.75rem;
  transition:border-color .4s ease,color .4s ease,letter-spacing .4s ease;
}
.case-nav button:hover{border-color:var(--gold);color:var(--gold);letter-spacing:.3em}
.case-count{
  font-family:"Rajdhani","Noto Sans SC",var(--sans);font-weight:600;
  font-size:.74rem;letter-spacing:.28em;color:var(--muted);
}
.case-count b{color:var(--gold);font-weight:700}

/* ---------- 全站深色修正 ---------- */
.nav .brand::before{display:none!important}
.nav a{color:var(--paper)!important}
.nav a:hover,.nav a[aria-current]{color:var(--gold)!important}
.feature:hover .feature-media img{transform:none!important}
.feature:hover .feature-caption{transform:none!important}
.feature:hover .feature-caption .tag{background:transparent!important;color:var(--gold)!important}
 .belief-list .row:hover{background:none!important;padding-left:0!important}
.belief-list .row:hover .idx{color:var(--gold-dim)!important}
.case-tab:hover{color:var(--muted)!important}
.hero:hover .scroll-cue{opacity:1!important}

/* 备案号链接 */
.icp-link{color:rgba(146,140,130,.7);text-decoration:none;border-bottom:none;transition:color .3s}
.icp-link:hover{color:rgba(244,241,234,.9);border-bottom:none}

/* ---------- 整页模式 ---------- */
.feature-media{height:clamp(240px,38vh,440px);aspect-ratio:auto}
.belief-list{border-top-color:var(--line)!important}
.belief-list .row{border-bottom-color:var(--line)!important}

/* 图片双层交叉淡化 */
.feature-media .case-layer{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;opacity:0;z-index:0;
  transition:opacity .6s ease;
}
.feature-media .case-layer.on{opacity:1;z-index:1}
.feature-media::after{z-index:2}
.feature-caption{z-index:3}
.feature-tag{z-index:3}
.feature-media .case-open{position:absolute;inset:0;z-index:4}
.feature-media .case-open:focus-visible{outline:1px solid var(--gold);outline-offset:-1px}

/* ---------- 文章详情 ---------- */
.single-post{min-height:100vh;padding:clamp(7rem,13vh,10rem) 0 4rem;background:#121215}
.single-post .wrap{max-width:860px}
.back-link{display:inline-block;font-size:.75rem;letter-spacing:.18em;color:var(--muted);margin-bottom:2rem;transition:color .3s}
.back-link:hover{color:var(--gold)}
.single-date{
  display:block;font-family:"Rajdhani","Noto Sans SC",var(--sans);font-weight:600;
  font-size:.6875rem;letter-spacing:.3em;text-transform:uppercase;color:var(--gold);margin-bottom:1rem;
}
.single-post h1{font-family:var(--serif);font-size:clamp(1.6rem,3vw,2.3rem);font-weight:700;letter-spacing:.02em;line-height:1.4}
.single-cover{margin:2.5rem 0;border:1px solid var(--line);overflow:hidden;background:#1c1c20}
.single-cover img{width:100%;height:auto;display:block}
.single-content{font-size:.9375rem;line-height:2.05;color:rgba(244,241,234,.78);max-width:38em}
.single-content p{margin-bottom:1.4rem}
.single-content a{color:var(--gold)}
.single-content a:hover{text-decoration:underline}
.single-content img{max-width:100%;height:auto;display:block;margin:1.6rem 0}
.single-content h2,.single-content h3{font-family:var(--serif);font-weight:700;margin:2rem 0 1rem}
.single-content ul,.single-content ol{padding-left:1.4rem;margin-bottom:1.4rem}

/* 几何字体统一强化 */
.eyebrow,.section-head .num,
.contact-item .label,.feature-caption .tag{
  font-family:"Rajdhani","Noto Sans SC",var(--sans);font-weight:600;
}

.contact-item a,.contact-item span{transition:border-color .35s,color .35s}

/* ---------- 视口高度较小时的收敛 ---------- */
@media (min-width:821px) and (max-height:820px){
  .region{padding:4.75rem 0 1.5rem}
  .section-head{margin-bottom:1.6rem}
  .section-head .num{margin-bottom:1rem}
  .section-head p{margin-top:1.1rem}
  .feature-media{height:clamp(230px,38vh,340px)}
  .about-col .section-head{margin-bottom:1.6rem}
  .about-lead{margin-bottom:1.2rem}
  .about-text p{margin-bottom:.85rem}
  .refuse-block{margin-top:2.2rem}
  .refuse li{padding:.7rem 0}
  .belief-list .row{padding:1rem 0}
  .case-tabs{margin-bottom:1.4rem}
  .case-nav{margin-top:1.6rem}
  .contact-hero{margin-bottom:2rem}
  .contact-grid{padding-top:2rem}
  footer{padding:1rem 0}
}
@media (min-width:821px) and (max-height:720px){
  .region{padding:4rem 0 1.25rem}
  .section-head p{display:none}
  .section-head .num{margin-bottom:.9rem}
  .section-head{margin-bottom:1.2rem}
  .about-col .section-head{margin-bottom:1.2rem}
  .feature-media{height:clamp(200px,34vh,300px)}
  .case-tabs{margin-bottom:1.1rem}
  .feature-bars{margin-top:1.1rem}
  .case-nav{margin-top:1.3rem}
  .belief-list .row{padding:.7rem 0}
  .about-grid{gap:1.5rem}
  .about-lead{margin-bottom:.8rem}
  .about-text p{margin-bottom:.6rem}
  .refuse-block{margin-top:1.6rem}
  .refuse li{padding:.5rem 0}
  .contact-hero{font-size:clamp(1.3rem,2.4vw,1.8rem);margin-bottom:1.5rem}
  .contact-grid{padding-top:1.2rem;gap:1.5rem}
  .qr{width:120px}
}

/* ---------- 平板（≤820px） ---------- */
@media (max-width:820px){
  .belief-list .row{grid-template-columns:auto 1fr;gap:0}
  .hero-sketches{display:none}
  .about-grid{grid-template-columns:1fr;gap:2.6rem}

  /* [FIX-10] 移动端不再"min-height:auto"导致 footer 悬空：
     保留整屏高度，但允许内容自然撑开；footer 用 margin-top:auto 贴底 */
  .region{
    min-height:100vh;
    min-height:100svh;
    padding:5.5rem 0 2.5rem;
  }
  .region-contact{
    padding-bottom:0;
    justify-content:flex-start;
  }
  .region-contact > .wrap{
    flex:1 0 auto;
    display:flex;flex-direction:column;justify-content:center;
  }
  .region-contact footer{
    margin-top:auto;
  }
}

/* ---------- 移动端（≤600px） ---------- */
@media(max-width:600px){
  html{-webkit-text-size-adjust:100%}

  .nav{--nav-pad:1.05rem;padding:1.05rem 1.25rem}
  .nav.scrolled{--nav-pad:1.05rem;padding:1.05rem 1.25rem}
  .nav ul{gap:.85rem;font-size:.65rem;letter-spacing:.1em}
  .nav .brand{font-size:.9rem}
  .wrap{padding:0 1.25rem}

  .hero{padding-top:4.5rem}
  .hero .eyebrow{font-size:.625rem;letter-spacing:.3em;gap:.7rem;margin-bottom:1rem}
  .hero .eyebrow::before{width:28px}
  .hero .lede{font-size:.8125rem;line-height:1.95;max-width:none}
  .hero .scroll-cue{display:none}

  .region{padding:5.5rem 0 2.25rem}
  .region-contact{padding-bottom:0}

  .section-head{margin-bottom:1.9rem}
  .section-head .num{font-size:.625rem;letter-spacing:.3em;gap:.8rem;margin-bottom:1.1rem}
  .section-head .num::before{width:30px}
  .section-head h2{font-size:1.45rem;line-height:1.4}
  .section-head p{font-size:.8125rem;line-height:1.95;margin-top:1.15rem}

  .feature-media{height:min(62vw,340px)}
  .feature-tag{top:1rem;bottom:auto;left:1rem}
  .feature-tag .tag{font-size:.625rem;letter-spacing:.2em;padding:.3rem .7rem}
  .feature-caption{left:1rem;right:1rem;bottom:1rem;align-items:flex-start;text-align:left;gap:.3rem}
  .feature-caption .title{font-size:1.15rem}
  .feature-caption .sub{font-size:.75rem;letter-spacing:.06em}
  .feature-bars{margin-top:1.2rem;gap:1rem}
  .case-tabs{gap:.3rem;margin-bottom:1.5rem}
  .case-tab{padding:.8rem .7rem;font-size:.7rem;letter-spacing:.1em}
  .case-tab::after{left:.7rem;right:.7rem}
  .case-nav{margin-top:1.6rem;gap:.6rem}
  .case-nav button{min-width:0;flex:1;padding:.75rem .5rem;font-size:.68rem;letter-spacing:.12em}
  .case-count{font-size:.66rem;letter-spacing:.18em;flex:none}

  .belief-list .row{padding:1.35rem 0}
  .belief-list p{font-size:.875rem;line-height:1.95;max-width:none}
  .about-col .section-head{margin-bottom:1.7rem}
  .about-lead{font-size:1rem;line-height:1.8;max-width:none;margin-bottom:1.4rem}
  .about-text p{margin-bottom:1rem;max-width:none}
  .about-close{font-size:.9rem;line-height:1.9}
  .refuse-block{margin-top:2.8rem}
  .refuse li{padding:.8rem 0;font-size:.8125rem;gap:.7rem}

  .contact-hero{font-size:1.4rem;line-height:1.55;margin-bottom:2rem}
  .contact-grid{grid-template-columns:1fr 1fr;gap:1.9rem 1.4rem;padding-top:2rem}
  .contact-item .label{font-size:.6rem;letter-spacing:.3em;margin-bottom:.7rem}
  .contact-item a,.contact-item span{font-size:.9375rem}
  .qr{width:110px;margin-top:.2rem}

  footer{font-size:.68rem}
  footer .wrap{flex-direction:column;gap:.9rem}
  footer .footer-right{align-items:flex-start;text-align:left}
}