@font-face{font-family:Alegreya Sans;font-style:italic;font-weight:400;font-display:swap;src:url(/fonts/AlegreyaSans-italic-400.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Alegreya Sans;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/AlegreyaSans-normal-400.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Alegreya Sans;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/AlegreyaSans-normal-500.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Alegreya Sans;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/AlegreyaSans-normal-700.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Fraunces;font-style:italic;font-weight:300 700;font-display:swap;src:url(/fonts/Fraunces-italic-300_700.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Fraunces;font-style:normal;font-weight:300 700;font-display:swap;src:url(/fonts/Fraunces-normal-300_700.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--paper: #faf5ee;--paper-raise: #fffdf8;--paper-deep: #f0e8da;--ink: #16283c;--ink-soft: #43566d;--ink-faint: #6e7f93;--mint: #2e9880;--mint-bright: #3fb79b;--mint-wash: #e2f1ec;--amber: #d98a2b;--amber-wash: #f9ead3;--line: rgba(22, 40, 60, .14);--shadow-soft: 0 2px 8px rgba(22, 40, 60, .06), 0 12px 32px rgba(22, 40, 60, .08);--shadow-lift: 0 4px 12px rgba(22, 40, 60, .1), 0 20px 48px rgba(22, 40, 60, .12);--radius: 14px;--radius-lg: 22px;--font-display: "Fraunces", "Songti TC", "Hiragino Mincho ProN", "Noto Serif CJK TC", serif;--font-body: "Alegreya Sans", -apple-system, "PingFang TC", "Hiragino Sans", "Noto Sans CJK TC", "Malgun Gothic", sans-serif;--measure: 66ch}@media(prefers-color-scheme:dark){:root{--paper: #14202e;--paper-raise: #1b2938;--paper-deep: #0f1926;--ink: #f0e9dd;--ink-soft: #c2c9d2;--ink-faint: #8b98a8;--mint: #4cc4a8;--mint-bright: #5fd6ba;--mint-wash: rgba(76, 196, 168, .12);--amber: #e8a854;--amber-wash: rgba(232, 168, 84, .14);--line: rgba(240, 233, 221, .16);--shadow-soft: 0 2px 8px rgba(4, 10, 18, .3), 0 12px 32px rgba(4, 10, 18, .35);--shadow-lift: 0 4px 12px rgba(4, 10, 18, .4), 0 20px 48px rgba(4, 10, 18, .45)}}*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-body);font-size:1.075rem;line-height:1.65;text-rendering:optimizeLegibility;position:relative}body:before{content:"";position:fixed;inset:0;pointer-events:none;z-index:1000;opacity:.035;background-image: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='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E")}h1,h2,h3{font-family:var(--font-display);font-weight:470;line-height:1.14;letter-spacing:-.015em;margin:0 0 .5em;text-wrap:balance}h1{font-size:clamp(2.3rem,5.4vw,3.7rem)}h2{font-size:clamp(1.7rem,3.4vw,2.4rem)}h3{font-size:1.28rem;font-weight:550}p{margin:0 0 1em;max-width:var(--measure)}a{color:var(--mint);text-decoration-thickness:1px;text-underline-offset:3px}a:hover{color:var(--mint-bright)}.wrap{width:min(1080px,calc(100% - 2.5rem));margin-inline:auto}.eyebrow{display:inline-block;font-size:.82rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--mint);margin-bottom:.9rem}.muted{color:var(--ink-soft)}.small{font-size:.9rem;color:var(--ink-faint)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.78rem 1.5rem;border-radius:999px;font-family:inherit;font-weight:700;font-size:1rem;line-height:1;text-decoration:none;background:transparent;border:1.5px solid transparent;transition:transform .15s ease,box-shadow .15s ease,background .15s ease,border-color .15s ease,color .15s ease;cursor:pointer}.btn-primary{background:var(--mint);color:#fffdf8;box-shadow:var(--shadow-soft)}.btn-primary:hover{background:var(--mint-bright);color:#fffdf8;transform:translateY(-2px);box-shadow:var(--shadow-lift)}.btn-ghost{background:var(--paper-raise);border-color:var(--line);color:var(--ink)}.btn-ghost:hover{border-color:var(--mint);color:var(--mint);transform:translateY(-1px)}.site-header{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:color-mix(in srgb,var(--paper) 82%,transparent);border-bottom:1px solid var(--line)}.site-header .wrap{display:flex;align-items:center;gap:1.4rem;padding-block:.7rem}.brand{display:flex;align-items:center;gap:.6rem;font-family:var(--font-display);font-size:1.22rem;font-weight:600;color:var(--ink);text-decoration:none;margin-right:auto}.brand img{width:30px;height:30px;border-radius:8px}.site-nav{display:flex;gap:1.15rem;align-items:center;flex-wrap:wrap}.site-nav a{color:var(--ink-soft);text-decoration:none;font-weight:500;font-size:.98rem}.site-nav a:hover,.site-nav a[aria-current=page]{color:var(--mint)}.lang-menu{position:relative;font-size:.92rem}.lang-menu summary{list-style:none;display:inline-flex;align-items:center;gap:.4rem;padding:.4rem .85rem;border:1px solid var(--line);border-radius:999px;color:var(--ink-soft);background:var(--paper-raise);cursor:pointer;user-select:none;transition:border-color .15s ease,color .15s ease}.lang-menu summary::-webkit-details-marker{display:none}.lang-menu summary:hover{border-color:var(--mint);color:var(--ink)}.lang-menu summary .chev{transition:transform .2s ease;opacity:.7}.lang-menu[open] summary{border-color:var(--mint);color:var(--ink)}.lang-menu[open] summary .chev{transform:rotate(180deg)}.lang-menu ul{position:absolute;right:0;top:calc(100% + 8px);z-index:60;min-width:12rem;margin:0;padding:.4rem;list-style:none;background:var(--paper-raise);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lift);max-height:70vh;overflow-y:auto;animation:menuIn .16s cubic-bezier(.2,.6,.2,1)}@keyframes menuIn{0%{opacity:0;transform:translateY(-6px)}}.lang-menu ul a{display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:.55rem .75rem;border-radius:9px;color:var(--ink-soft);text-decoration:none;white-space:nowrap}.lang-menu ul a:hover{background:var(--mint-wash);color:var(--ink)}.lang-menu ul a[aria-current=true]{color:var(--mint);font-weight:700}.lang-menu ul a[aria-current=true]:after{content:"✓";font-size:.9em}.lang-banner{display:none;background:var(--mint-wash);border-bottom:1px solid var(--line);font-size:.95rem}.lang-banner.visible{display:block}.lang-banner .wrap{display:flex;align-items:center;gap:1rem;padding-block:.55rem}.lang-banner a{font-weight:700}.lang-banner button{margin-left:auto;background:none;border:none;color:var(--ink-faint);font-size:1.1rem;cursor:pointer}.hero{position:relative;overflow:hidden;padding-block:clamp(2.75rem,5vw,4.5rem) clamp(3rem,6vw,5rem)}.hero .wrap{position:relative;z-index:2}.hero-kicker{max-width:34rem}.hero .lede{font-size:1.22rem;color:var(--ink-soft);max-width:36rem}.hero-actions{display:flex;gap:.9rem;flex-wrap:wrap;margin-top:1.9rem;align-items:center}.hero-curve{position:absolute;inset:0;z-index:1;pointer-events:none}.hero-curve svg{position:absolute;right:-4%;top:8%;width:58%;min-width:480px;opacity:.55}@media(max-width:780px){.hero-curve svg{opacity:.24;width:130%;right:-40%}}.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2.5rem;align-items:center}.hero-phones{display:flex;gap:0;align-items:flex-start;padding-right:.5rem}.hero-phones img{width:207px;height:auto;border-radius:22px;border:1px solid var(--line);box-shadow:var(--shadow-lift);background:#14202e}.hero-phones img:first-child{transform:rotate(-4deg) translateY(14px);z-index:2}.hero-phones img:last-child{transform:rotate(3.5deg) translate(-30px);margin-top:3.2rem;z-index:1}@media(max-width:900px){.hero-grid{grid-template-columns:1fr}.hero-phones{justify-content:center;padding-top:2.2rem;padding-right:0}.hero-phones img{width:min(42vw,190px)}}.curve-path{fill:none;stroke:var(--mint);stroke-width:2.5;stroke-dasharray:1400;stroke-dashoffset:1400;animation:draw 2.2s cubic-bezier(.5,0,.2,1) .25s forwards}.curve-dot{fill:var(--amber);opacity:0;animation:pop .5s ease forwards}@keyframes draw{to{stroke-dashoffset:0}}@keyframes pop{to{opacity:1}}.rise{opacity:0;transform:translateY(14px);animation:rise .7s cubic-bezier(.2,.6,.2,1) forwards}@keyframes rise{to{opacity:1;transform:none}}.section{padding-block:clamp(3rem,7vw,5.5rem)}.section-deep{background:var(--paper-deep);border-block:1px solid var(--line)}.grid{display:grid;gap:1.4rem;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));margin-top:2.2rem}.card{background:var(--paper-raise);border:1px solid var(--line);border-radius:var(--radius-lg);padding:1.6rem 1.5rem;box-shadow:var(--shadow-soft);transition:transform .18s ease,box-shadow .18s ease}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift)}.card h3{display:flex;align-items:center;gap:.55rem}.card .ico{display:inline-grid;place-items:center;width:2.1rem;height:2.1rem;border-radius:10px;background:var(--mint-wash);font-size:1.1rem}.card p{font-size:.99rem;color:var(--ink-soft);margin-bottom:0}.badge-new{font-size:.68rem;font-weight:800;letter-spacing:.08em;color:var(--amber);background:var(--amber-wash);border-radius:999px;padding:.15rem .55rem;vertical-align:middle}.steps{counter-reset:step;display:grid;gap:1.2rem;margin-top:2rem;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.step{position:relative;padding-left:3.4rem}.step:before{counter-increment:step;content:counter(step);position:absolute;left:0;top:.1rem;width:2.4rem;height:2.4rem;display:grid;place-items:center;border-radius:50%;font-family:var(--font-display);font-weight:600;font-size:1.15rem;color:var(--mint);background:var(--mint-wash);border:1px solid var(--line)}.step h3{margin-bottom:.3rem}.step p{font-size:.98rem;color:var(--ink-soft)}.gallery{display:flex;gap:1.1rem;overflow-x:auto;padding:1.6rem max(calc((100% - 1080px)/2),1.25rem) 1.2rem;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}.gallery img{flex:0 0 auto;width:207px;height:auto;border-radius:20px;border:1px solid var(--line);box-shadow:var(--shadow-soft);background:#14202e;scroll-snap-align:center;transition:transform .18s ease}.gallery img:hover{transform:translateY(-4px)}.gallery::-webkit-scrollbar{height:8px}.gallery::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}.evidence{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.6rem}.evidence span{font-size:.88rem;font-weight:600;color:var(--ink-soft);border:1px solid var(--line);border-radius:999px;padding:.4rem .95rem;background:var(--paper-raise)}.faq-list{max-width:46rem;margin-top:1.6rem}.faq-list details{border-bottom:1px solid var(--line);padding-block:.95rem}.faq-list summary{font-weight:700;font-size:1.06rem;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:1rem}.faq-list summary:after{content:"+";color:var(--mint);font-size:1.3rem;line-height:1}.faq-list details[open] summary:after{content:"–"}.faq-list details>div{padding-top:.6rem;color:var(--ink-soft)}.faq-list details>div p{max-width:none}.calc-panel{background:var(--paper-raise);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);padding:1.8rem;margin-top:2rem}.calc-grid{display:grid;gap:1.2rem 1.6rem;grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}.field label{display:block;font-weight:700;font-size:.92rem;margin-bottom:.35rem}.field input,.field select{width:100%;font:inherit;color:var(--ink);background-color:var(--paper);border:1.5px solid var(--line);border-radius:10px;padding:.6rem .8rem}.field select{-webkit-appearance:none;appearance:none;padding-right:2.3rem;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2343566d' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .85rem center}@media(prefers-color-scheme:dark){.field select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23c2c9d2' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E")}}.field input:focus,.field select:focus{outline:2px solid var(--mint);outline-offset:1px;border-color:transparent}.field .hint{font-size:.82rem;color:var(--ink-faint);margin-top:.3rem}.calc-actions{margin-top:1.5rem;margin-bottom:0}.calc-chart{margin-top:1.8rem}.calc-result-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.8rem 1rem;margin-bottom:.4rem}.calc-result-head h3{margin:0}.calc-toolbar{display:flex;flex-wrap:wrap;gap:.5rem}.tool-chip{display:inline-flex;align-items:center;gap:.4rem;padding:.4rem .8rem;font-family:inherit;font-size:.85rem;font-weight:600;color:var(--ink-soft);background:color-mix(in srgb,var(--paper-deep) 55%,transparent);border:1px solid var(--line);border-radius:999px;cursor:pointer;transition:border-color .15s ease,color .15s ease,background .15s ease}.tool-chip:hover{border-color:var(--mint);color:var(--mint);background:var(--mint-wash)}.calc-chart svg{width:100%;height:auto}.axis{stroke:var(--line);stroke-width:1}.axis-label{fill:var(--ink-faint);font-size:11px;font-family:var(--font-body)}.plot-line{fill:none;stroke:var(--mint);stroke-width:2.4}.plot-dot{fill:var(--amber)}.plot-area{fill:var(--mint);opacity:.08}.calc-table{width:100%;border-collapse:collapse;margin-top:1.6rem;font-size:.97rem}.calc-table th,.calc-table td{text-align:left;padding:.55rem .8rem;border-bottom:1px solid var(--line)}.calc-table th{font-size:.83rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-faint)}.calc-table tr:nth-child(2n) td{background:color-mix(in srgb,var(--paper-deep) 45%,transparent)}.callout{border-left:3.5px solid var(--amber);background:var(--amber-wash);border-radius:0 var(--radius) var(--radius) 0;padding:1rem 1.3rem;font-size:.97rem;margin-block:1.6rem}.callout p{margin:0;max-width:none}.prose{max-width:var(--measure);padding-block:clamp(2.5rem,6vw,4.5rem)}.prose h1{font-size:clamp(2rem,4.5vw,2.9rem)}.prose h2{font-size:1.45rem;margin-top:2.2rem}.prose li{margin-bottom:.4rem}.guide-grid{display:grid;gap:1.3rem;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));margin-top:2.2rem}.guide-card{display:flex;flex-direction:column;gap:.5rem;background:var(--paper-raise);border:1px solid var(--line);border-radius:var(--radius-lg);padding:0 0 1.4rem;overflow:hidden;box-shadow:var(--shadow-soft);text-decoration:none;color:var(--ink);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.guide-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:var(--mint);color:var(--ink)}.guide-card-img{width:100%;height:auto;aspect-ratio:1200 / 630;object-fit:cover;display:block;border-bottom:1px solid var(--line);background:var(--paper)}.guide-card h3{margin:.7rem 0 0;padding:0 1.4rem;font-size:1.16rem}.guide-card p{font-size:.95rem;color:var(--ink-soft);margin:0;padding:0 1.4rem;max-width:none;flex:1}.guide-meta{display:flex;justify-content:space-between;gap:1rem;padding:0 1.4rem;font-size:.8rem;color:var(--ink-faint)}.guide-tags{text-align:right}.guide-hero{width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:var(--radius-lg);margin:.4rem 0 2rem}.guide-crumbs{margin-bottom:1.2rem}.guide-crumbs a{color:var(--ink-faint);text-decoration:none}.guide-crumbs a:hover{color:var(--mint)}.guide-byline{margin-top:-.4rem;margin-bottom:1.4rem}.guide-disclaimer{margin-top:0}.guide table{width:100%;border-collapse:collapse;margin-block:1.4rem;font-size:.96rem}.guide th,.guide td{text-align:left;padding:.55rem .75rem;border-bottom:1px solid var(--line);vertical-align:top}.guide th{font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-faint)}.guide tr:nth-child(2n) td{background:color-mix(in srgb,var(--paper-deep) 45%,transparent)}.guide blockquote{margin:1.4rem 0;padding:.9rem 1.2rem;border-left:3.5px solid var(--mint);background:var(--mint-wash);border-radius:0 var(--radius) var(--radius) 0}.guide blockquote p{margin:0;max-width:none}.guide-faq{margin-top:2.6rem}.guide-related{margin-top:2.2rem}.guide-related ul{padding-left:1.2rem}.guide-related li{margin-bottom:.45rem}.site-footer{margin-top:3rem;border-top:1px solid var(--line);background:var(--paper-deep);font-size:.95rem}.site-footer .wrap{padding-block:2.6rem 2rem}.footer-cols{display:grid;gap:2rem;grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.footer-cols h4{font-size:.85rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint);margin:0 0 .7rem}.footer-cols a{display:block;color:var(--ink-soft);text-decoration:none;padding-block:.18rem}.footer-cols a:hover{color:var(--mint)}.footer-meta{margin-top:2.2rem;padding-top:1.2rem;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:.8rem 1.6rem;color:var(--ink-faint);font-size:.86rem}.footer-meta p{margin:0;max-width:none}.stores{display:flex;gap:.8rem;flex-wrap:wrap;align-items:center}.stores a{display:inline-flex;align-items:center;gap:.5rem;border:1.5px solid var(--line);border-radius:12px;padding:.55rem 1.05rem;text-decoration:none;color:var(--ink);font-weight:600;font-size:.95rem;background:var(--paper-raise);transition:border-color .15s ease,transform .15s ease}.stores a:hover{border-color:var(--mint);transform:translateY(-2px)}@media print{.site-header,.site-footer,.lang-banner,.hero-curve,.gallery,.calc-actions .calc-tool,#calc-run,.faq-list,.callout:last-of-type{display:none!important}body{background:#fff;color:#111;font-size:11pt}body:before{display:none}.calc-panel{box-shadow:none;border:1px solid #bbb}a{color:#111;text-decoration:none}}@media(prefers-reduced-motion:reduce){.curve-path,.curve-dot,.rise{animation:none;opacity:1;transform:none;stroke-dashoffset:0}html{scroll-behavior:auto}}